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Arthrographic description of the canine carpal joint cavities and its recesses Anat. Histol. Embryol. (IF 0.9) Pub Date : 2024-03-11 Sven Klußmann, Andrea Meyer‐Lindenberg, Andreas Brühschwein
Joint effusion is diagnostically important. The canine carpal joint effusion, which is sometimes difficult to detect clinically, has received less attention in diagnostic ultrasound (US) studies. The aim of the present study was to provide a description of the morphological appearance of the canine carpal joint cavities and recesses using US, radiography, helical computed tomography (CT) and three‐dimensional
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Interaction of talus and calcaneus morphometric values and estimation of carcass weight in cattle Anat. Histol. Embryol. (IF 0.9) Pub Date : 2024-03-07 Mehmet Kartal, Yasemin Üstündağ, Rifat Mutuş, Derya Silibolatlaz Baykara, Muhsin Öztürk, Zihni Mutlu
In this study, the calcaneus and talus bones of 20 male and female adult Simmental and Angus cattle were used. The age and sex of these animals were recorded before slaughter, and carcass weights were taken after slaughter. Calcaneus and talus morphometric measurements were used to obtain multipliers that allow the estimation of the carcass weight. These multipliers were found to be mean values of
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Impact of feeding native Caatinga pasture on the rumen histomorphometry of sheep raised in semi‐extensive management Anat. Histol. Embryol. (IF 0.9) Pub Date : 2024-03-07 Eglésia Rodrigues Leite, Aírton Mendes Conde Júnior, Clarisse Maria Barbosa Fonseca, Hatawa Melo de Almeida Monteiro, Maria Acelina Martins de Carvalho, Wanderson Gabriel Gomes de Melo, Ana Lúcia Teodoro, Daniel de Jesus Silva, Larissa Stefany da Silva Oliveira, José Cláudio Barros Ferraz, Dayseanny de Oliveira Bezerra
In the northeastern region of Brazil, sheep and goat farming, encompassing around 20 million animals, is predominantly a subsistence activity. Forage quality plays a crucial role in animal productivity, posing a complex interplay between plant and animal aspects. The Caatinga biome, vital for livestock in the region, serves as a significant source for animal diet through pastures. This study aimed
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Radiologic and computed tomography evaluation of the beaks from three bird species Anat. Histol. Embryol. (IF 0.9) Pub Date : 2024-03-05 Daniel Simões da Silva, Sheila Canevese Rahal, Jeana Pereira da Silva, Maria Jaqueline Mamprim, Gabriel Corrêa de Camargo, Guilherme Rech Cassanego, Ricardo Shoiti Ichikawa
This study aimed to evaluate the beaks of three species of birds using radiography and computed tomography (CT). The mean lengths of maxillary and mandibular rostra on radiographs were highest for toco toucan, followed by buff‐necked ibis, and least for red‐legged seriema birds. The height and width of maxillary and mandibular rostra measured on CT had mean values highest for toco toucans, followed
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Topography and morphometry of the infraorbital and mandibular foramen of the common sloth (Bradypus variegatus) for use in the application of perineural anaesthesia Anat. Histol. Embryol. (IF 0.9) Pub Date : 2024-03-01 Ana Luisa Carvalho Moia, Érika Branco, Ellen Yasmin Eguchi Mesquita, Ana Rita de Lima
A local anaesthetic block performed in cranial and mandibular foramina contributes towards analgesia and the reduction of systemic anaesthesia in procedures in the oral cavity. However, anatomical differences between in wild animals may require adaptations to the anaesthetic and surgical manoeuvres of the head used in domestic animals. With that in mind, we aimed to describe the topography and morphometry
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Immunohistochemical expression of beta‐catenin, BMP4 and TGF‐beta in odontomas Anat. Histol. Embryol. (IF 0.9) Pub Date : 2024-02-27 Glória Maria de França, Hévila de Figueiredo Pires, Weslay Rodrigues da Silva, Éverton Freitas de Morais, Roseana de Almeida Freitas, Lélia Batista de Souza, Hébel Cavalcanti Galvão
Changes in the expression of nuclear β‐catenin are responsible for tumorigenesis. Beta‐catenin acts synergistically with the TGF‐β/BMPs pathway. This interaction leads to greater dentin deposition and may explain the differences between distinct tooth morphologies and hamartomas. The aim of this study was to investigate the role of β‐catenin, BMP4 and TGF‐β in the development of odontomas. This cross‐sectional
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Comparison of craniometric measurements of New Zealand rabbit (Oryctolagus cuniculus L.) using three‐dimensional scanner with digital calliper measurements: A methodological study Anat. Histol. Embryol. (IF 0.9) Pub Date : 2024-02-19 Ali Koçyiğit, İsmail Demircioğlu
As technology has developed in recent years, the use of three‐dimensional (3D) scanners and printers has become widespread in the medical field. However, since this field is new, all kinds of methodological and experimental related studies gain importance. This study aimed to identify the differences between the calliper measurements by determining the craniometric data on the models constructed by
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Computed tomography and three dimensional anatomical study of the liver in the chinchilla (Chinchilla lanigera) Anat. Histol. Embryol. (IF 0.9) Pub Date : 2024-02-13 Ömer Gürkan Dilek, Rosen Dimitrov, Kamelia Stamatova-Yovcheva, Mehmet Ersen, David Yovchev, Seyyid Said Sabancı, Emine Karakurum
Few instances of neoplastic formations in the liver of chinchillas have been found, even though the species is widely used in different scientific experiments. In the present article we investigate the anatomical features of the chinchilla's liver using CT and three dimension (3D) imaging. For the trials we used 12 (six males and six females) clinically healthy chinchillas all at 18 months of age.
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CT-based 3D reconstruction and basic anatomical analysis of the 3D anatomy of the air sac system in domestic birds Anat. Histol. Embryol. (IF 0.9) Pub Date : 2024-02-06 O. Petnehazy, A. Csoka, D. Fajtai, S. Echols, T. Donko
The complex anatomy of the avian respiratory system makes it necessary to broaden our knowledge using modern imaging and reconstructional possibilities. The visualization of these structures can be used for clinical situations, in research or as teaching aids in veterinary education. For this we generated 3D models from diagnostic imaging data (computed tomography [CT] scans) of birds. We describe
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Stereological and computed tomography calculation of intracranial volume in Hamdani sheep Anat. Histol. Embryol. (IF 0.9) Pub Date : 2024-02-02 Ali Koçyiğit, İsmail Demircioğlu, Barış Can Güzel
The intracranial cavity contains vital organs such as the brain, cerebellum and meninges. The veterinary field employment in this region is limited. For this reason, obtaining information about the intracranial cavity, the operation to be performed on this region and information about the world will benefit our unit. It aimed to examine the width between gender differences and expectations by calculating
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A histological study of the protracted dismantling of the spent (Sertoli-only) shark spermatocyst post-spermiation: Insight from species with or without testis-associated lymphomyeloid tissue Anat. Histol. Embryol. (IF 0.9) Pub Date : 2024-01-27 Leon Mendel McClusky, Julius Nielsen
Sertoli cells of sharks are non-permanent components of the spermatocyst that they share exclusively with only one germ cell stage. After spermiation, all Sertoli cells, and thus the whole spent cyst, are disposed of in an area adjacent to the spermatozoal spermatocysts, that is, the resorption zone (RZ). Differences in the histology and magnitude of the RZ of the mature blue shark and Greenland shark
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Preliminary examination of the histochemistry of the semitendinosus muscle microstructure in Bali cattle (Bos javanicus) and the correlations with muscle score Anat. Histol. Embryol. (IF 0.9) Pub Date : 2024-01-23 Andhika Yudha Prawira, Supratikno, Saiful Anwar, Isyana Khaerunnisa, Ahmad Furqon, Savitri Novelina, Koko Wisnu Prihatin
Bali cattle (Bos javanicus) are a local breed from Indonesia with the potential for beef production, but its meat has been reported to be tough. This indicates that there is a need to develop various methods that can be used for assessment to improve the quality of the meat. One such method is muscle scoring (MS), which is often used to predict the amount of meat in the carcass from live animals, but
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Anomalous origin of the right subclavian artery in a Neotropical otter (Lontra longicaudis, Olfers—1818) Anat. Histol. Embryol. (IF 0.9) Pub Date : 2024-01-23 Juan Fernando Vélez García
The Neotropical otter (Lontra longicaudis) is a mustelid distributed geographically from Mexico to Argentina. Anomalous origins of the aortic arch branches are rarely reported in wild carnivorans. Therefore, this study aimed to report the anomalous branching of the aortic arch in one formaldehyde-fixed specimen of L. longicaudis. The aortic arch provided three branches: the bicarotid trunk and the
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Age-dependent changes in the brain of albino rats (Rattus norvegicus): A morphometric analysis and magnetic resonance imaging Anat. Histol. Embryol. (IF 0.9) Pub Date : 2024-01-19 Amira M. Mohamad, Said A. Hassan, Eid Ali Moussa, Tarek Omar El Mahdy
The current manuscript had been conducted to evaluate the effect of ageing on the brains of albino rats on the macro-morphometric level and to assess the different parameters of brain and brain structures affected by ageing. Fifty apparently healthy rats of both sexes (27 males and 23 females) were used in the study, in addition to three rats for MRI. The animals were divided into four groups according
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Morphology of 16-cell embryo in bovine: Inside cells, compaction, fragmentation and effects of X-sorted semen Anat. Histol. Embryol. (IF 0.9) Pub Date : 2024-01-17 Clara Slade Oliveira, Naiara Zoccal Saraiva, Leticia Zoccolaro Oliveira
In mouse embryos, inside cells are allocated in 16-cell embryos through a well-orchestrated sequence of events involving compaction and polarization. The emergence of inside cells is of great importance as itl later gives rise to the inner cell mass and epiblast. In this study, we report the sequence of critical events in embryology (compaction, inside cells allocation and fragmentation) in bovine
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Computed tomographic study analysing functional biomechanics in the thoracolumbar spine of horses with and without spinal pathology Anat. Histol. Embryol. (IF 0.9) Pub Date : 2024-01-17 Natalie Baudisch, Lukas Schneidewind, Sophie Becke, Max Keller, Milena Overhoff, Dennis Tettke, Viola Gruben, Fabienne Eichler, Henning Jürgen Meyer, Christoph Lischer, Anna Ehrle
To better understand physiological and pathological movement patterns in the equine thoracolumbar spine, investigation of the biomechanics on a segmental level requires a constant moment. A constant moment along the spinal column means that the same torque acts on each vertebral segment, allowing the range of motion of different segments to be compared. The aims of this study were to investigate the
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Differential distribution of intermediate filament proteins in the bovine and ovine tongues Anat. Histol. Embryol. (IF 0.9) Pub Date : 2024-01-05 Fatma Çelenk, Berna Güney Saruhan, Hakan Sağsöz
Intermediate filaments constitute the most heterogeneous class among the major classes of cytoskeletal proteins of mammalian cells. The 40 or more intermediate filament proteins have been classified into five types which show very specific rules of expression in specialized cell types. This study aimed to investigate the immunohistochemical distribution of cytokeratins (CKs) 8, 18, and 19 as well as
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Radiographic and sonographic features, and histogram parameters of the liver and spleen in healthy Toco toucans (Ramphastos toco, Müller 1976) Anat. Histol. Embryol. (IF 0.9) Pub Date : 2024-01-01 Jeana Pereira da Silva, Sheila Canevese Rahal, Anneke Moresco, Maria Cristina Reis Castiglioni, Michel de Campos Vettorato, Luna Scarpari Rolim, Ricardo Shoiti Ichikawa, Maria Jaqueline Mamprim
This study aimed to evaluate radiographic and sonographic features, and histogram parameters based on grayscale ultrasound of the liver and spleen in healthy toco toucans. Fifteen adult toco toucans (Ramphastos toco), seven females and eight males, weighing approximately 650 g, were enrolled in the study. On the right lateral radiographic view, the liver was visualized in the midventral region of the
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Ultrastructural characteristics and morphological relationships of cardiomyocytes and telocytes in the myocardium of the bullfrog (Rana catesbeiana) Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-12-16 Zifan Wang, Yizhen Xu, Ling Huang, Jiancheng Zhao, Yaqiong Ye, Canying Liu, Bingyun Wang, Haiquan Zhao, Hui Zhang
Telocytes (TCs) are distinctive interstitial cells due to their characteristic structures and heterogeneity. They are suggested to participate in tissue repair/regeneration. TCs have been identified in many organs of various mammals. However, data on TCs in lower animals are still very limited. In this work, TCs were identified in the myocardium of the bullfrog (Rana catesbeiana) by light and transmission
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Sonographic features of abdominal organs in healthy captive Neotropical otters (Lontra longicaudis) Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-12-16 Beatriz de Espírito Augusti, Sheila Canevese Rahal, Jeana Pereira da Silva, Mirian Halásc Vac, Rodrigo Hidalgo Friciello Teixeira, Andre Luiz Mota da Costa, Marcelo da Silva Gomes, Jeniffer Novais, Oldemar Carvalho Junior, Maria Jaqueline Mamprim
This study aimed to assess the sonographic features of abdominal organs in healthy captive Neotropical otters (Lontra longicaudis). The sonograph showed that the urinary bladder was located in the caudal abdomen and its content was uniformly anechoic. The bladder wall had three layers: outer hyperechoic serosa, hypoechoic muscular layer and hyperechoic mucosa. The mean total wall thickness was 0.10 cm
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Morphological features of the late-embryo-stage gastrointestinal tract of free-roaming light ecotype Nigerian indigenous chicken Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-12-09 Anietie Francis Udoumoh, Udensi Maduabuchi Igwebuike, Innocent Chima Nwaogu, Ikechukwu Reginald Obidike
Morphological changes in the late-embryo-stage gastrointestinal tract of Nigerian indigenous chicken were investigated using anatomical techniques. The paraffin-embedded sections were stained with haematoxylin and eosin and periodic acid Schiff-Alcian blue (pH 2.5) stains. During the late pre-hatch period, the framework of the stomach was already established, but glands were yet poorly developed. Randomly
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Microanatomical, histochemical and morphometric features of the major and selected minor salivary glands in laboratory Wistar rat Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-12-07 Gal Adrian Florin, Matei-Latiu Maria-Catalina, Miclaus Viorel, Rus Vasile, Latiu Calin, Ratiu Ioana Adela
The major and minor salivary glands are responsible for saliva production, a fluid drained in the oral cavity that will be involved in several functions at this level. The present study aimed to compare the microanatomy of the major (parotid, mandibular, sublingual) and minor salivary glands (von Ebner's and Weber's) of the Wistar rat, from a histological, histochemical and morphometrically point of
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Ultrasonographic evaluation of the liver and gallbladder and hepatic histogram of non-venomous snakes Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-11-28 Jeana Pereira da Silva, Sheila Canevese Rahal, Maria Cristina Reis Castiglioni, Michel de Campos Vettorato, Ricardo Shoiti Ichikawa, Rodrigo Hidalgo Friciello Teixeira, Danuta Pulz Doiche, Maria Jaqueline Mamprim
This study aimed to describe sonographic features of the liver, gallbladder and hepatic histogram from grey-scale ultrasound in three species of healthy non-venomous snakes. Twenty-eight adult snakes were enrolled in the study, including 10 common boas (Boa constrictor), eight black-tailed pythons (Python molurus) and 10 rainbow boas (Epicrates crassus). The snakes fasted for 30 days and were manually
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Thoracic cavity of the Shirazi cats: New insights using computed tomography and magnetic resonance imaging Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-11-28 Alaa Ibrahim, Ahmed Rashwan, Ashraf El Sharaby, Mohamed Abumandour, Ahmed Nomir
Our study provided a comprehensive characterization of the thorax of Shirazi cats by comparing the relevant soft and bone windows of computed tomography (CT) and magnetic resonance imaging (MRI) with cross, sagittal and coronal sectional anatomy. We outlined the mediastinum and its anatomic relationships with the trachea, oesophagus, lungs, heart, cranial and caudal vena cavae, and other thoracic structures
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Brain volumetry from CT-scan endocasts of three neotropical carnivores Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-11-23 Marelise Moral Montana, Carlos Benhur Kasper, Felipe Lima Pinheiro, Luis Felipe Salles Pereira, Marcelo Abidu-Figueiredo, Paulo de Souza-Junior
Studies on brain anatomy can clarify specific evolutionary and behavioural aspects of wild animals. The rich diversity in a broad range of habitats makes carnivorans especially eligible for studying the relations between the brain form and behaviour, cognitive, sensorial and motor traits. This study compared the brain's contour and total and segmented brain volumetry in three species of neotropical
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Hindlimb bones texture through postnatal ages of Rhea americana (Aves: Palaeognathae) Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-11-23 M. B. J. Picasso, C. Acosta Hospitaleche
The bone texture of Rhea americana was evaluated through the examination of a postnatal ontogenetic series. The hind limb bone surfaces of specimens of one, three and five months old, and adults were compared to characterize each stage according to the morphological features generated by their differential ossification. The results suggest a similar process of tissue maturation concerning neognathous
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Microstructural characterization of the skin in the African straw-coloured fruit bat, Eidolon helvum (Pteropodidae) Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-11-21 Iheanyi Kemdirim Peter-Ajuzie, Hannah Sarah Chukwu, Casmir Onwuaso Igbokwe
The African straw-coloured fruit Bat, Eidolon helvum, is a Yinpterochiroptera bat that is of public health and ecological importance. This study investigated the light microscopic morphology, morphometry and histochemistry of the skin and its glands across the cheek, withers, croup, ventral abdomen, perianal region, wing membrane, intercrural membrane and foot pad of the species. Sweat glands were
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Immunoexpression of vascular endothelial growth factor and vWF-regulating angiogenesis in cyclic corpus luteum of Indian buffalo Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-11-21 Kritima Kapoor, Opinder Singh, Devendra Pathak, Ram Saran Sethi
The present study was conducted to localize the immunoexpression of VEGF-A (Vascular Endothelial Growth Factor) and von Willebrand factor (vWF) in corpora lutea of healthy buffaloes (24) collected from local slaughterhouses. CL collected were categorized into early (stage I, 1–5 days, n = 6), mid (stage II, 6–11 days, n = 6), late luteal phase (stage III, 12 to 16 days, n = 6) and regressing phase
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Age-related anatomical variation and morphometric studies on the optic tectum in post-hatch broiler chicken Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-11-20 Avnish Kumar Gautam, Sanjay Ray, Partha Das, Arun Kumar Mandal, Nirmal Kumar Tudu, Dharmendra Singh, Md Mofijul Islam, Tanmoy Rana
In this investigation the morphological and morphometrical features of the optic tectum in post-hatch broiler chicken were studied macroscopically and microscopically. The present study was conducted on 70 day old broiler chicks which were reared up to 42 days. The whole experimental period of study was divided into seven groups (from group I to VII) at weekly interval (days 0, 7, 14, 21, 28, 35 and
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Anatomic and morphometric examination of auditory ossicles in sheep Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-11-20 Burcu Kamaşak Arpaçay, Berat Yağmur, Emre Uğuz, Elif Çömlekçi, Ruken Öncü, Tufan Ulcay, Kenan Aycan
It is important to know the morphometry of the auditory ossicles for middle ear surgical applications. The present study aims to investigate the morphometric measurements of sheep auditory ossicles and the relationship between these ossicles. In this study, 100 malleus, incus and stapes of 50 Akkaraman sheep were examined using at trinocular stereo microscope and a total of 19 morphometric measurements
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Histochemical analysis, smooth muscle immunolocalization and volumetric density of the elastic system fibres of the ostrich (Struthio camelus) phallus Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-11-16 Lanna Beatriz Neves Silva Corrêa, Clarice Machado dos Santos, Marcelo Abidu-Figueiredo, Lycia De Brito-Gitirana, Mauricio Alves Chagas
There are few scientific reports on the histology of the phallus of ratite birds. The aim of this study was to conduct a histochemical analysis to determine the distribution of smooth muscle cells and the volumetric density (Vv) of the fibres of the elastic system in the ostrich phallus. Adult ostriches, 14 months old, were used. The phalluses were fixed in Bouin's solution and then transferred to
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Evaluation of sex differences in pelvis and femur x-ray images in British shorthair cats by geometric morphometric method Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-11-15 Ermiş Özkan, Gülsün Pazvant
The study covers British Shorthair cats, which is a popular domestic cat breed in our country and defined as ‘brachycephalic’ in terms of skull structure. Article focuses on the pelvis and femur region of cats which gynaecological and orthopaedic diseases of this cat breed, which are frequently encountered in clinical practice, is found to be important. It is aimed to reveal the shape differences between
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Embryonic development of the chick pineal gland throughout the incubation periods Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-11-14 Fatma Colakoglu, Muhammet Lutfi Selcuk
Birds have a very different pineal gland structure morphologically and cytologically. The structure of the organ shows significant changes during the incubation periods. This study, which follows the embryological development of the pineal gland and makes histomorphometric measurements of the cellular elements that make up the gland parenchyma, is a current reference for studies in these areas. These
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Tomographic evaluation of the glands and lymph nodes of the cervical region in the crab-eating fox (Cerdocyon thous) Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-11-10 Isis Pinto da Costa, Bruno Cesar Schimming, Fernanda Gabriela de Oliveira, Jeana Pereira da Silva, Mariana de Melo Santos, Heloisa Coppini de Lima, Brayan Sayed López Castañeda, Suelen Lorena da Silva, Miriam Harumi Tsunemi, Maria Jaqueline Mamprim
The present study aimed to determine references of normality of computed tomographic (CT) images of mandibular and parotid salivary glands (PSGs), medial retropharyngeal and mandibular lymph nodes and thyroid gland of 10 clinically healthy crab-eating foxes, Cerdocyon thous. The location, shape, homogeneity of the parenchyma, and length, height, width and pre- and post-contrast attenuation values were
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Three-dimensional modelling and morphological investigation of the bones of the Articulatio genus using computed tomography images in Van cats Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-11-07 Süleyman Dursun, Osman Yilmaz, İsmail Demircioğlu
In this study, it was aimed to make three-dimensional reconstruction of the stifle joint computed tomography (CT) images of the Van cats, to obtain their osteometric measurements, and to determine the statistical biometric differences of these measurement values in terms of both sexual dimorphism and homotypic variations. A total of 16 healthy adult Van cats of both sexes were used. The stifle joints
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Sphenoid sinus in the Holstein cow: A sectional and 3D reconstructive anatomical study Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-11-04 Nimet Turgut, Sadullah Bahar, Abidin Kılınçer
Cattle disorders affecting the sphenoid sinus are underreported, likely due to difficulties in imaging and lacking topographic knowledge. This study aimed to provide a detailed description of the normal anatomical and morphometric features of the cattle sphenoid sinus. Twelve healthy adult Holstein cow heads were used, and the sinus was examined using CT, anatomical sectioning and 3D modelling. The
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An investigation of the distributions of ferroptosis and necroptosis mediators in the maternal–fetal interface at different days of rat pregnancy Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-11-03 Musa Tatar, Kıymet Kübra Tüfekci
Ferroptosis and necroptosis are recognized as playing major roles in the regulation of various physiological processes. However, the physiological role of the cell death mediated by these two pathways in the developmental process has not yet been clearly established. This study investigated ferroptosis and necroptosis signalling pathways in maternal–fetal tissue in the different gestational days (GD)
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Microscopic anatomy of the subcommissural organ in the brain of the adult greater cane rat (Rodentia: Thryonomyidae) Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-10-24 T. T. Gilbert, F. E. Olopade, A. D. Ladagu, D. O. Lanipekun, O. I. Fatola, O. R. Folarin, J. O. Olopade
The subcommissural organ (SCO) is a well-developed gland present in the brain of vertebrates. The SCO secretes glycoproteins into the circulating cerebrospinal fluid and these assemble to form Reissner's fibre. It also plays an important function in neurogenesis and axonal guidance during embryogenesis. This study delves into the microscopic anatomy of the SCO in the adult greater cane rat (GCR), shedding
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Morphological description of the alimentary canal and adnexal glands in Amazilia tzacatl, Amazilia saucerottei, Amazilia amabilis and Anthrachotorax nigricollis species Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-10-21 John Edisson Muñoz-Zuluaga, Julián Andrés Monroy-Hurtado, Julián David Muñoz-Duque, Luz Natalia Franco-Montoya, Lynda Tamayo-Arango
The hummingbird family (Trochilidae) includes the smallest and most metabolically active vertebrates. They have a high energy demand because of their extraordinarily high metabolic rates during hovering while looking for food. The morphology of the digestive apparatus is related to the feeding habits of the species. The anatomy and histology of the digestive apparatus in these birds have not been thoroughly
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Evaluation of the common pauraque (Nyctidromus albicollis) cornea using light and scanning electron microscopy Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-10-18 Rafaela Alves Ribon Tozetti, Rosélia de Lima Sousa Araújo, Matheus Vilardo Loes Moreira, Larissa Cristina de Souza Akiyama, José Raimundo Corrêa, Bret A. Moore, Paula Diniz Galera
The common pauraque Nyctidromus albicollis (Gmelin, 1789) is a widespread avian species; however due to its nocturnal habits and reclusive behaviour, little is known about their vision and ecology. Most avian species are visually dependent with advanced visual systems providing high spatial resolution, on the species needs. Each ocular structure has a specific role in contributing towards high visual
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Morphology and computed tomography of the larynx in the white-eared opossum (Didelphis albiventris) Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-10-18 Bruno Cesar Schimming, Letícia Rocha Inamassu, Bruno Critelli Carvalho, Selma Maria Michelin Matheus
The white-eared opossum (Didelphis albiventris) is a Neotropical marsupial that occurs in the Brazilian territory. The larynx is an important organ of vocalization in mammals, although, other laryngeal functions are more fundamental for survival of mammals than phonation. The anatomical knowledge of respiratory structures is pivotal for a better understanding of the species. Thus, this study aimed
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Report on the brain of the monk seal (Monachus monachus, Hermann, 1779) Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-10-16 Jean-Marie Graïc, Sandro Mazzariol, Cristina Casalone, Antonio Petrella, Claudia Gili, Tommaso Gerussi, Ksenia Orekhova, Cinzia Centelleghe, Bruno Cozzi
The Mediterranean monk seal (Monachus monachus, Hermann, 1779) is an endangered species of pinniped endemic to few areas of the Mediterranean Sea. Extensive hunting and poaching over the last two centuries have rendered it a rare sight, scattered mainly in the Aegean Sea and the western coast of North Africa. In a rare event, a female monk seal calf stranded and died in southern Italy (Brindisi, Puglia)
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Comparison of chemical and enzymatic maceration processes for soft tissue removal from arterial silicone casts on skull scaffolds Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-10-15 Janne Granroth, Juha Laakkonen
The various models used in gross anatomical studies to improve the visualization of blood vessels differ in the amount of manual labour, cost, equipment and time involved. This study aimed to compare chemical and enzymatic maceration processes for soft-tissue removal from arterial silicone casts on skull scaffolds using ringed seal (Pusa hispida) skull specimens. Both processes produced specimens that
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The organ of vision morphology of the southern two-toed sloth (Choloepus didactylus Linnaeus, 1758; Pilosa, Choloepodidae) Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-10-12 Joanna Klećkowska-Nawrot, Karolina Barszcz, Krzysztof O. Stegmann, Karolina Goździewska-Harłajczuk
The Choloepus didactylus is a species belonging to the Choloepodidae family of the Folivora suborder. This study concerns the anatomical, morphometrical, histological and histochemical examination of the eye tunics, eyelids and orbital glands in the three adult Choloepus didactylus coming from the Wroclaw Zoological Garden. The cornea consists of four layers since Bowman's membrane was absent. The
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Calculation of cerebral hemispheres volume values (grey matter, white matter and lateral ventricle) of sheep and goat: A stereological study Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-10-11 Sedat Aydoğdu, Emrullah Eken
Stereology is a discipline that allows us to obtain quantitative information about the geometric structure of three-dimensional objects. In this study, the volume of grey matter (GM), white matter (WM), and lateral ventricle (LV) of the cerebral hemispheres (CH) in sheep and goats were calculated. For this purpose, six healthy male sheep and goat brains (1–2 years old) without any anomaly were used
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Differential expression of epithelial and smooth muscle lineage-specific markers of metanephros in one-humped camel foetuses Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-10-10 Sameh M. Farouk, Walaa A. A. Basha, Mahmoud A. Emam, Elsayed Metwally
The development of the metanephros in one-humped camels involves a complex series of interactions between epithelial and mesenchymal cells. As a result, there is a synchronized differentiation process of stromal, vascular and epithelial cell types during glomerulogenesis, angiogenesis and tubulogenesis. In the current work, the metanephros of camel foetuses were divided into four stages where kidneys
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Seasonal adaptation of Mangalica pigs in terms of muscle morphology and metabolism Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-10-09 Sangwoo Kim, Chisato Nakayama, Daisuke Kondoh, Tatsuki Okazaki, Erina Yoneda, Kisaki Tomita, Motoki Sasaki, Yuki Muranishi
The skeletal muscle plays an important role in maintaining body temperature, which is mediated by thermogenesis and glucose or lipid metabolism. Mangalica is a native Hungarian pig that has cold tolerance and can live in grazing environments throughout the year. We evaluated the morphological and genetic aspects of Mangalica using muscle tissues to elucidate the mechanisms underlying the tolerance
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Distributions and expressions of Aquaporin-5 and 7 in the testes of developing male chicks Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-10-04 Hülya Kara, Deniz Tekiner
Aquaporins (AQPs) are integral membrane proteins that act as water channels for which a total of 13 orthologs of AQP genes in birds have been reported. Tissue expression and cellular or subcellular localization of AQPs have been poorly investigated in the male reproductive system of birds. We aimed to determine the distribution and localization of AQP5 and AQP7 proteins by immunocytochemistry in testicular
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DSP2 for sex determination of miscegenated contemporary hip bones Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-10-04 Allyson Rodrigo de Oliveira Lopes, Ellen Mayara Lima Silva, Marcela Martins da Silva Nascimento, Melina Calmon Silva, Carolina Peixoto Magalhães, Gilberto Santos Cerqueira
The bones of the human pelvis are used in sexual diagnosis generating a high level of accuracy for this type of identification. Morphological and/or morphometric methods are used in the identification of sex. Sexual dimorphism may be affected by ethnic differences in the population. One of the methods for determining sex using hip bone is the ‘Diagnose Sexuelle Probabiliste (DSP)’ or Probabilistic
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Prostaglandins as local regulators of ovarian physiology in ruminants Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-10-03 Bajram Berisha, Granit Thaqi, Fred Sinowatz, Dieter Schams, Daniela Rodler, Michael W. Pfaffl
Prostaglandins are synthesized from arachidonic acid through the catalytic activities of cyclooxygenase, while the production of different prostaglandin types, prostaglandin F2 alpha (PGF) and prostaglandin E2 (PGE), are regulated by specific prostaglandin synthases (PGFS and PGES). Prostaglandin ligands (PGF and PGE) bind to specific high-affinity receptors and initiate biologically distinct signalling
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Origin and distribution pattern of pelvic limb nerves of a Bengal tiger (Panthera tigris tigris) Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-10-03 Hilda Liliana Sánchez, Norberto Massone, Francisco Alarcón, Marta Emilia Rafasquino, Juan José Diorio, Gustavo Zuccolilli, Enrique Leo Portiansky
The Bengal tiger (Panthera tigris tigris) is a species belonging to the Felidae family. In Argentina, tigers are currently only found in captivity. The longevity of individual animals in human-controlled environments depends on proper management and practices that prioritize animal welfare. Regular veterinary care is essential to maintain optimal health conditions. Professionals must have a comprehensive
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Daxx knockdown promoted rDNA transcription without impairing H3.3 expression in mouse preimplantation embryos Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-09-28 Sihang Song, Nan Wang, Xing-wei Huang, Qi Jiang, Xiang-rong Cheng, Nan Pang, Lei Lei
During fertilization, DAXX (death domain-associated protein) mediates histone variant H3.3 incorporation into heterochromatin, which plays an important role in the maintenance of genomic integrity. rDNA, the ribosomal gene, is included in the first wave of gene activation after fertilization. Our and other studies indicated that loss of Daxx disturbs rDNA heterochromatinization and promotes rDNA transcription
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Allometric scaling of skin weight and thickness to body weight in relation to taxonomic orders and habitats in mammals Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-09-28 Naomi Wada, Saki Ushiroda, Ran Satoh, Masashi Sakurai, Shinichiro Kawada, Claudius Luziga, Hiroshi Ichikawa
Skin is the largest organ in a mammal body, and it exhibits most significant range of adaptations to different habitats. It is a complex, biological composite structure, consisting of epidermis, dermis and subcutaneous tissues and is used for the therapeutic application of medical devices to improve healthcare. Extensive studies have been performed on the roles of the skin; however, little is known
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Posthatch developmental changes in the ovary with emphasis on follicular development and atresia in the native chicken (Uttara fowl) of Uttarakhand, India Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-09-23 Khan Idrees Mohd, Rabab Saleem, Om Prakash Choudhary, Ishwar Singh
This experiment was designed to investigate the postnatal development of the ovary in the Uttara fowl chicken and was conducted on 54 apparently healthy female birds divided into different age groups, namely Day 1 and Weeks 1, 4, 8, 12, 16, 20, 24, 28 with six birds each. During postnatal development, the left ovary gradually increased in size and complexity. The segmentation of the ovary started by
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Ultrastructural evidence of telocytes in the embryonic chick heart Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-09-23 Khan Lamanero Junatas, Liesbeth Couck, Hanna Tay, Fred Sinowatz, Wim Van Den Broeck
The cardiac telocyte (TC) is a novel interstitial cell type with a unique ultrastructure and great potential in therapy. The present study examined its presence in the heart of chicken embryos ageing 7–15 days old (Hamburger-Hamilton [HH] stages 31–41) using transmission electron microscopy. TCs were identified across all stages in the atrial and ventricular myocardium, close to maturing cardiomyocytes
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Orbital shape in sheep and goats with sex and breed factors Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-09-20 Funda Aksünger Karaavci, Yasin Demiraslan, İsmail Demircioğlu, İftar Gürbüz, Özcan Özgel
The purpose of this study was to identify the dimorphic structures of the orbita based on breed and sex factors through shape analysis across species. Additionally, the study aimed to ascertain the variability between the two species. A total of 86 (51 sheep—Akkaraman [Ak] and Morkaraman [Mk], 35 goats—Hair [Hr] and Honamlı [Hm]) skulls were used in the study. It was decided to designate 36 landmarks
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Verification of the efficacy of deciduae for determining the genetic type of mouse embryos Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-09-19 Hiroyuki Imai, Naoki Iwamori, Tokuko Iwamori, Sumito Matsuya, Kiyoshi Kano, Ken Takeshi Kusakabe
Mouse embryos in the early-implantation stage require manipulation under a microscope. While the extraction of DNA, RNA and proteins from a single sample allows for both determination of genetic type and analysis of gene expression, whole mount analysis is not possible. In this study, we explored the applicability of PCR using extraembryonic tissues, especially the decidual side tissue after isolating
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Bovine Meissner-like corpuscle and evolutionary ecology of mammalian somatosensory acuity Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-09-19 Ghulam M. Bhat, Samina Bashir, Shah S. Jan, Shamima Banoo, Javeed A. Khan
The mammalian snout has Meissner's corpuscles (MCs), which transmit epicritic sensations as the animal explores its surroundings. To comprehend the somatosensory acuity in mammals, we examined the structural organization and density of bovine Meissner-like corpuscles (BMLCs) at various ages and compared the changes with other mammalian MCs. The skin from the snout of cows or oxen (2–11 years old) was
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Exploring alternatives for securing anatomical structures in capturing digital images: A comparative analysis Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-09-19 Daniela G. Turchenski, Acir J. Franco, Rafael G. Turchenski, Laís C. Werner, Saulo H. Weber, Yohan B. Gumiel, Pedro V. Michelotto
Teaching veterinary anatomy using digital platforms requires improved image quality, which may influence the fixation process. This study aimed to compare four embalming solutions for high-colour-quality images of different tissues compared to the original image. Four equine left pelvic limbs were cut into metameres and divided equally for application of 10% formaldehyde, 96% glycerine, 33% hypersaturated
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Three-dimensional morphometry of the testis in dog using design-unbiased stereology Anat. Histol. Embryol. (IF 0.9) Pub Date : 2023-09-15 Hadis Bojarzadeh, Giulia Lazzarini, Alessandra Gatta, Javad Sadeghinezhad, Leila Samieeroudy, Andrea Pirone, Vincenzo Miragliotta
Testis is considered the main organ of the male reproductive system. Dogs are used as a suitable experimental model of testicular diseases in humans. From the veterinary aspect, several disorders have been reported to affect the testis in dogs. Thus, the objective of the present study was to investigate the morphometrical features of the dog testis using design-based stereology. The testes of six male