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The Effect of the Hypertrophy Virus (MdSGHV) on the Ultrastructure of the Salivary Glands of Musca domestica (Diptera: Muscidae)
Journal of Insect Science ( IF 2.1 ) Pub Date : 2021-02-10 , DOI: 10.1093/jisesa/ieab015
D Molina Palacios 1 , J G Stoffolano 2 , A M Fausto 3 , G Gambellini 4 , J Burand 5
Affiliation  

The salivary glands of insects play a key role in the replication cycle and vectoring of viral pathogens. Consequently, Musca domestica (L.) (Diptera: Muscidae) and the Salivary Gland Hypertrophy Virus (MdSGHV) serve as a model to study insect vectoring of viruses. A better understanding of the structural changes of the salivary glands by the virus will help obtain a better picture of the pathological impact the virus has on adult flies. The salivary glands are a primary route for viruses to enter a new host. As such, studying the viral effect on the salivary glands is particularly important and can provide insights for the development of strategies to control the transmission of vector-borne diseases, such as dengue, malaria, Zika, and chikungunya virus. Using scanning and transmission electron microscopic techniques, researchers have shown the effects of infection by MdSGHV on the salivary glands; however, the exact location where the infection was found is unclear. For this reason, this study did a close examination of the effects of the hypertrophy virus on the salivary glands to locate the specific sites of infection. Here, we report that hypertrophy is present mainly in the secretory region, while other regions appeared unaffected. Moreover, there is a disruption of the cuticular, chitinous lining that separates the secretory cells from the lumen of the internal duct, and the disturbance of this lining makes it possible for the virus to enter the lumen. Thus, we report that the chitinous lining acts as an exit barrier of the salivary gland.

中文翻译:

肥大病毒(MdSGHV)对家蝇(双翅目:蝇科)唾液腺超微结构的影响

昆虫的唾液腺在病毒病原体的复制周期和载体中起关键作用。因此,家蝇 (L.) (双翅目:蝇科) 和唾液腺肥大病毒 (MdSGHV) 可作为研究病毒昆虫媒介的模型。更好地了解病毒对唾液腺的结构变化将有助于更好地了解病毒对成蝇的病理影响。唾液腺是病毒进入新宿主的主要途径。因此,研究病毒对唾液腺的影响尤为重要,可以为制定控制登革热、疟疾、寨卡病毒和基孔肯雅病毒等媒介传播疾病传播的策略提供见解。使用扫描和透射电子显微镜技术,研究人员已经证明了 MdSGHV 感染对唾液腺的影响;但是,发现感染的确切位置尚不清楚。出于这个原因,这项研究仔细检查了肥大病毒对唾液腺的影响,以定位特定的感染部位。在这里,我们报告肥大主要存在于分泌区域,而其他区域似乎不受影响。此外,将分泌细胞与内导管腔隔开的角质层、几丁质衬里受到破坏,这种衬里的破坏使病毒有可能进入管腔。因此,我们报告几丁质衬里充当唾液腺的出口屏障。发现感染的确切位置尚不清楚。出于这个原因,这项研究仔细检查了肥大病毒对唾液腺的影响,以定位特定的感染部位。在这里,我们报告肥大主要存在于分泌区域,而其他区域似乎不受影响。此外,将分泌细胞与内导管腔隔开的角质层、几丁质衬里受到破坏,这种衬里的破坏使病毒有可能进入管腔。因此,我们报告几丁质衬里充当唾液腺的出口屏障。发现感染的确切位置尚不清楚。出于这个原因,这项研究仔细检查了肥大病毒对唾液腺的影响,以定位特定的感染部位。在这里,我们报告肥大主要存在于分泌区域,而其他区域似乎不受影响。此外,将分泌细胞与内导管腔隔开的角质层、几丁质衬里受到破坏,这种衬里的破坏使病毒有可能进入管腔。因此,我们报告几丁质衬里充当唾液腺的出口屏障。我们报告肥大主要存在于分泌区域,而其他区域似乎不受影响。此外,将分泌细胞与内导管腔隔开的角质层、几丁质衬里受到破坏,这种衬里的破坏使病毒有可能进入管腔。因此,我们报告几丁质衬里充当唾液腺的出口屏障。我们报告肥大主要存在于分泌区域,而其他区域似乎不受影响。此外,将分泌细胞与内导管腔隔开的角质层、几丁质衬里受到破坏,这种衬里的破坏使病毒有可能进入管腔。因此,我们报告几丁质衬里充当唾液腺的出口屏障。
更新日期:2021-02-10
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