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Acute exposure to bis(2-ethylhexyl)phthalate disrupts calcium homeostasis, energy metabolism and induces oxidative stress in the testis of Danio rerio.
Biochimie ( IF 3.3 ) Pub Date : 2020-05-15 , DOI: 10.1016/j.biochi.2020.05.002
Hemily Batista-Silva 1 , Betina Fernanda Dambrós 1 , Keyla Rodrigues 1 , Patrícia Acordi Cesconetto 1 , Ariane Zamoner 1 , Kieiv Resende Sousa de Moura 2 , Allisson Jhonatan Gomes Castro 1 , Glen Van Der Kraak 3 , Fátima Regina Mena Barreto Silva 1
Affiliation  

Bis(2-ethylhexyl)phthalate (BEHP) negatively affects testicular functions in different animal species, disturbing reproductive physiology and male fertility. The present study investigated the in vitro acute effect of BEHP on the mechanism of action of ionic calcium (Ca2+) homeostasis and energy metabolism. In addition, the effect of BEHP on oxidative stress was studied in vitro and in vivo in the testis of Danio rerio (D. rerio). Testes were treated in vitro for 30 min with 1 μM BEHP for 45Ca2+ influx measurements. Testes were also incubated with 1 μM BEHP for 1 h (in vitro) or 12 h (in vivo) for the measurements of lactate content, 14C-deoxy-d-glucose uptake, lactate dehydrogenase (LDH) and gamma-glutamyl transpeptidase (GGT) activity, total reactive oxygen species (ROS) production and lipid peroxidation. In addition, the effect of BEHP (1 μM) on GGT, glutamic oxaloacetic transferase (GOT) and glutamic pyruvic transferase (GPT) activity in the liver was evaluated after in vivo treatment for 12 h. BEHP disturbs the Ca2+ balance in the testis when given acutely in vitro. BEHP stimulated Ca2+ influx occurs through L-type voltage-dependent Ca2+ channels (L-VDCC), transitory receptor potential vaniloid (TRPV1) channels, reverse-mode Na+/Ca2+ exchanger (NCX) activation and inhibition of sarco/endoplasmic reticulum Ca2+-ATPase (SERCA). BEHP affected energy metabolism in the testis by decreasing the lactate content and LDH activity. In vitro and in vivo acute effects of BEHP promoted oxidative stress by increasing ROS production, lipid peroxidation and GGT activity in the testis. Additionally, BEHP caused liver damage by increasing GPT activity.

中文翻译:

急性接触邻苯二甲酸二(2-乙基己基)酯会破坏丹尼奥睾丸的钙稳态,能量代谢并诱导其氧化应激。

邻苯二甲酸二(2-乙基己基)酯(BEHP)对不同动物物种的睾丸功能产生负面影响,影响生殖生理和男性生育能力。本研究调查了BEHP在体外对离子钙(Ca2 +)稳态作用和能量代谢机制的急性影响。另外,在丹尼奥里约热内卢(D. rerio)的睾丸中进行了体外和体内BEHP对氧化应激的影响。用1μMBEHP在体外对睾丸进行30分钟处理,以测量45Ca2 +流入量。还将睾丸与1μMBEHP孵育1小时(体外)或12小时(体内),以测量乳酸含量,14C-脱氧-d-葡萄糖摄取,乳酸脱氢酶(LDH)和γ-谷氨酰转肽酶(GGT)活性,总活性氧(ROS)产生和脂质过氧化作用。此外,在体内治疗12小时后,评估了BEHP(1μM)对肝脏中GGT,谷氨酸草酰乙酸转移酶(GOT)和谷氨酸丙酮酸转移酶(GPT)活性的影响。急性体外给予时,BEHP会干扰睾丸中的Ca2 +平衡。BEHP刺激的Ca2 +内流通过L型电压依赖性Ca2 +通道(L-VDCC),瞬时受体电位类固醇(TRPV1)通道,反向模式Na + / Ca2 +交换子(NCX)活化和对肌/内质网Ca2 + -ATPase的抑制而发生(SERCA)。BEHP通过降低乳酸含量和LDH活性来影响睾丸的能量代谢。BEHP的体外和体内急性效应通过增加睾丸中的ROS生成,脂质过氧化和GGT活性来促进氧化应激。另外,BEHP通过增加GPT活性引起肝脏损害。体内处理12小时后,评估肝脏中的谷氨酸草酰乙酸转移酶(GOT)和谷氨酸丙酮酸转移酶(GPT)活性。急性体外给予时,BEHP会干扰睾丸中的Ca2 +平衡。BEHP刺激的Ca2 +内流通过L型电压依赖性Ca2 +通道(L-VDCC),瞬时受体电位类固醇(TRPV1)通道,反向模式Na + / Ca2 +交换子(NCX)活化和对肌/内质网Ca2 + -ATPase的抑制而发生(SERCA)。BEHP通过降低乳酸含量和LDH活性来影响睾丸的能量代谢。BEHP的体外和体内急性效应通过增加睾丸中的ROS生成,脂质过氧化和GGT活性来促进氧化应激。另外,BEHP通过增加GPT活性引起肝脏损害。体内治疗12小时后,评估肝脏中的谷氨酸草酰乙酸转移酶(GOT)和谷氨酸丙酮酸转移酶(GPT)活性。急性体外给予时,BEHP会干扰睾丸中的Ca2 +平衡。BEHP刺激的Ca2 +内流通过L型电压依赖性Ca2 +通道(L-VDCC),瞬时受体电位类固醇(TRPV1)通道,反向模式Na + / Ca2 +交换子(NCX)活化和对肌/内质网Ca2 + -ATPase的抑制而发生(SERCA)。BEHP通过降低乳酸含量和LDH活性来影响睾丸的能量代谢。BEHP的体外和体内急性效应通过增加睾丸中的ROS生成,脂质过氧化和GGT活性来促进氧化应激。另外,BEHP通过增加GPT活性引起肝脏损害。
更新日期:2020-05-15
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