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Lu J, Zhao SX, Zhang MY, Ji PY, Chao S, Li LJ, Yin S, Zhao L, Zhao H, Sun QY, Ge ZJ. Tea polyphenols alleviate the adverse effects of diabetes on oocyte quality. Food Funct 2022; 13:5396-5405. [PMID: 35471225 DOI: 10.1039/d1fo03770f] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Maternal diabetes mellitus reduces oocyte quality, such as abnormalities of spindle assembly and chromosome segregation, mitochondrial dysfunction, decrease of fertilization rate, increase of ROS, and so on. So, it is important to research how to restore the decreased oocyte quality induced by maternal diabetes mellitus. Polyphenols are the most abundant bioactive components of green tea. It is reported that tea polyphenols have many health functions, for instance anti-oxidation, anti-inflammation, anti-obesity, and anti-diabetes. Thus, we hypothesize that tea polyphenols may play a crucial role in alleviating adverse effects of diabetes on oocyte quality. In the present study, we researched the effects of tea polyphenols on diabetic oocyte maturation in vitro. Compared with the control, oocytes from diabetic mice displayed a lower maturation rate and a higher frequency of spindle defects and chromosome misalignment. However, tea polyphenols significantly increased the oocyte maturation rate, and reduced the incidence of abnormal spindle assembly and chromosome segregation. Tea polyphenols also obviously decreased the reactive oxygen species (ROS) levels in diabetic oocytes, and increased the expression of antioxidant genes (Sod1 and Sod2). Abnormal mitochondrial membrane potential was also alleviated in diabetic oocytes, and the expression of genes regulating mitochondrial fusion (Opa1, Mfn1 and Mfn2) and fission (Drp1) was significantly increased while tea polyphenols were added. Meanwhile, tea polyphenols reduced DNA damage in diabetic oocytes which may be mediated by the increased expression of Rad51, related to DNA damage repair. Our results suggest that tea polyphenols would, at least partially, restore the adverse effects of diabetes mellitus on oocyte quality.
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Affiliation(s)
- Jun Lu
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, P. R. China.
| | - Shu-Xian Zhao
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, P. R. China.
| | - Man-Yu Zhang
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, P. R. China.
| | - Peng-Yuan Ji
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, P. R. China.
| | - Shuo Chao
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, P. R. China.
| | - Li-Jun Li
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, P. R. China.
| | - Shen Yin
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, P. R. China.
| | - Lei Zhao
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, P. R. China
| | - Hua Zhao
- Reproductive Medicine Center, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou 450003, P. R. China
| | - Qing-Yuan Sun
- Fertility Preservation Lab and Guangdong-Hong Kong Metabolism & Reproduction Joint Laboratory, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou 510317, China.
| | - Zhao-Jia Ge
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, P. R. China.
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Gai Y, Zhang MY, Ji PY, You RJ, Ge ZJ, Shen W, Sun QY, Yin S. Melatonin improves meiosis maturation against diazinon exposure in mouse oocytes. Life Sci 2022; 301:120611. [PMID: 35526594 DOI: 10.1016/j.lfs.2022.120611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/24/2022] [Accepted: 04/30/2022] [Indexed: 10/18/2022]
Abstract
AIMS Organophosphorus pesticide diazinon (DZN) has adverse effects on animals and humans by direct contact or the spread of food chain. The antioxidant melatonin has protective effects on female reproduction. This study aimed to explore the effects of DZN on meiosis maturation in mouse cumulus oocyte complexes (COCs) and the effects of melatonin. MAIN METHODS Different concentrations of DZN and melatonin were added during the in vitro maturation of COCs. Then we detected the extrusion rate of the first polar body, the number of sperms binding to oocyte, mitochondrial membrane potential, reactive oxygen species (ROS), early apoptosis. Subsequently, the expression of Juno, CX37, CX43 and ERK1/2 were detected by immunofluorescence staining and Western blotting. KEY FINDINGS DZN exposure results in the failure of nuclear and cytoplasmic maturation of oocyte meiosis. Destruction of repositioning and function of mitochondria increases the levels of ROS and early apoptosis. The DZN-exposed oocytes express less Juno resulting to bind less sperms than normal. The loss of gap junctions and failure to activate ERK1/2 also contribute to the failure of cytoplasmic maturation. All these ultimately lead to the poor oocyte quality and low fertility. Appropriate melatonin can effectively restore all these defects. SIGNIFICANCE Under DZN exposure, melatonin can significantly improve the quality of oocytes, and melatonin promotes oocyte maturation by protecting gap junction and restoring ERK1/2 pathway, which is a new breakthrough for improving female fertility.
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Affiliation(s)
- Yang Gai
- College of Life Sciences, Institute of Reproductive Science, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, International Science and Technology Cooperation Base of Animal Developmental Biology, Qingdao Agricultural University, Qingdao 266109, China
| | - Man-Yu Zhang
- College of Life Sciences, Institute of Reproductive Science, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, International Science and Technology Cooperation Base of Animal Developmental Biology, Qingdao Agricultural University, Qingdao 266109, China
| | - Peng-Yuan Ji
- College of Life Sciences, Institute of Reproductive Science, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, International Science and Technology Cooperation Base of Animal Developmental Biology, Qingdao Agricultural University, Qingdao 266109, China
| | - Rong-Jing You
- College of Life Sciences, Institute of Reproductive Science, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, International Science and Technology Cooperation Base of Animal Developmental Biology, Qingdao Agricultural University, Qingdao 266109, China
| | - Zhao-Jia Ge
- College of Life Sciences, Institute of Reproductive Science, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, International Science and Technology Cooperation Base of Animal Developmental Biology, Qingdao Agricultural University, Qingdao 266109, China
| | - Wei Shen
- College of Life Sciences, Institute of Reproductive Science, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, International Science and Technology Cooperation Base of Animal Developmental Biology, Qingdao Agricultural University, Qingdao 266109, China
| | - Qing-Yuan Sun
- Fertility Preservation Lab, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou 510317, China
| | - Shen Yin
- College of Life Sciences, Institute of Reproductive Science, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, International Science and Technology Cooperation Base of Animal Developmental Biology, Qingdao Agricultural University, Qingdao 266109, China.
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Jason LA, Ji PY, Anes MD, Birkhead SH. Active enforcement of cigarette control laws in the prevention of cigarette sales to minors. JAMA 1991; 266:3159-61. [PMID: 1956104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVE To assess the effect that cigarette legislation would have on reducing merchant sales rates of cigarettes to minors and the affect on adolescent smoking behavior. DESIGN Observational survey of merchant selling behaviors and adolescent smoking habits before and after passage of legislation. SETTING The setting for the merchant survey was Woodridge, Ill (population 25,200), a suburban community of Chicago. The surveys were distributed to adolescents in the local junior high school. PARTICIPANTS Convenience sample of both merchants and adolescent students. INTERVENTION Passage of community antismoking legislation. MAIN OUTCOME MEASURES Percentage of stores selling cigarettes to minors in Woodridge and percentage of students who had experimented with cigarettes or were regular smokers. RESULTS Merchant sales rates in Woodridge decreased from a baseline of 70% before legislation to less than 5% in 1.5 years of compliance checking after legislation. Student surveys showed that the rates of cigarette experimentation and regular use of cigarettes by adolescents were reduced by over 50%. CONCLUSION Cigarette control laws can be effective in significantly reducing the rate of cigarettes sold by merchants and rates of cigarette use by adolescents. Key elements of successful legislation implementation are consistent compliance checking and heightened community awareness of the problems and prevalence of adolescent smoking.
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Affiliation(s)
- L A Jason
- Department of Psychology, DePaul University, Chicago, Ill. 60614
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