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Elías-López AL, Vázquez-Mena O, Sferruzzi-Perri AN. Mitochondrial dysfunction in the offspring of obese mothers and it's transmission through damaged oocyte mitochondria: Integration of mechanisms. Biochim Biophys Acta Mol Basis Dis 2023:166802. [PMID: 37414229 DOI: 10.1016/j.bbadis.2023.166802] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/23/2023] [Accepted: 06/29/2023] [Indexed: 07/08/2023]
Abstract
In vivo and in vitro studies demonstrate that mitochondria in the oocyte, are susceptible to damage by suboptimal pre/pregnancy conditions, such as obesity. These suboptimal conditions have been shown to induce mitochondrial dysfunction (MD) in multiple tissues of the offspring, suggesting that mitochondria of oocytes that pass from mother to offspring, can carry information that can programme mitochondrial and metabolic dysfunction of the next generation. They also suggest that transmission of MD could increase the risk of obesity and other metabolic diseases in the population inter- and trans-generationally. In this review, we examined whether MD observed in offspring tissues of high energetic demand, is the result of the transmission of damaged mitochondria from obese mothers' oocytes to the offspring. The contribution of genome-independent mechanisms (namely mitophagy) in this transmission were also explored. Finally, potential interventions aimed at improving oocyte/embryo health were investigated, to see if they may provide an opportunity to halter the generational effects of MD.
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Affiliation(s)
- A L Elías-López
- Dirección de Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán", Mexico.
| | | | - A N Sferruzzi-Perri
- Centre for Trophoblast Research, Department of Physiology, Development and Neuroscience, University of Cambridge, UK.
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2
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Wu M, Huang Y, Zhu Q, Zhu X, Xue L, Xiong J, Chen Y, Wu C, Guo Y, Li Y, Wu M, Wang S. Adipose tissue and ovarian aging: Potential mechanism and protective strategies. Ageing Res Rev 2022; 80:101683. [PMID: 35817297 DOI: 10.1016/j.arr.2022.101683] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 05/29/2022] [Accepted: 07/05/2022] [Indexed: 11/01/2022]
Abstract
Ovarian aging occurs approximately 10 years prior to the natural age-associated functional decline of other organ systems. With the increase of life expectancy worldwide, ovarian aging has gradually become a key health problem among women. Therefore, understanding the causes and molecular mechanisms of ovarian aging is very essential for the inhibition of age-related diseases and the promotion of health and longevity in women. Recently, studies have revealed an association between adipose tissue (AT) and ovarian aging. Alterations in the function and quantity of AT have profound consequences on ovarian function because AT is central for follicular development, lipid metabolism, and hormonal regulation. Moreover, the interplay between AT and the ovary is bidirectional, with ovary-derived signals directly affecting AT biology. In this review, we summarize the current knowledge of the complex molecular mechanisms controlling the crosstalk between the AT and ovarian aging, and further discuss how therapeutic targeting of the AT can delay ovarian aging.
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Affiliation(s)
- Meng Wu
- National Clinical Research Center for Obstetrical and Gynecological Diseases; Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China; National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei 430030, China; Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei 430030, China
| | - Yibao Huang
- National Clinical Research Center for Obstetrical and Gynecological Diseases; Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China; National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei 430030, China; Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei 430030, China
| | - Qingqing Zhu
- National Clinical Research Center for Obstetrical and Gynecological Diseases; Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China; National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei 430030, China; Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei 430030, China
| | - Xiaoran Zhu
- National Clinical Research Center for Obstetrical and Gynecological Diseases; Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China; National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei 430030, China; Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei 430030, China
| | - Liru Xue
- National Clinical Research Center for Obstetrical and Gynecological Diseases; Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China; National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei 430030, China; Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei 430030, China
| | - Jiaqiang Xiong
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Ying Chen
- National Clinical Research Center for Obstetrical and Gynecological Diseases; Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China; National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei 430030, China; Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei 430030, China
| | - Chuqing Wu
- National Clinical Research Center for Obstetrical and Gynecological Diseases; Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China; National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei 430030, China; Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei 430030, China
| | - Yican Guo
- National Clinical Research Center for Obstetrical and Gynecological Diseases; Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China; National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei 430030, China; Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei 430030, China
| | - Yinuo Li
- National Clinical Research Center for Obstetrical and Gynecological Diseases; Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China; National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei 430030, China; Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei 430030, China
| | - Mingfu Wu
- National Clinical Research Center for Obstetrical and Gynecological Diseases; Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China; National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei 430030, China; Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei 430030, China.
| | - Shixuan Wang
- National Clinical Research Center for Obstetrical and Gynecological Diseases; Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China; National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei 430030, China; Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei 430030, China.
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3
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Abstract
Both obesity and overweight are increasing worldwide and have detrimental influences on several human body functions including the reproductive health. In particular, obese women undergo perturbations of the 'hypothalamic pituitary ovarian axis', and frequently suffer of menstrual dysfunction leading to anovulation and infertility. Besides the hormone disorders and subfertility that are common in the polycystic ovary syndrome (PCOS), in obesity the adipocytes act as endocrine organ. The adipose tissue indeed, releases a number of bioactive molecules, namely adipokines, that variably interact with multiple molecular pathways of insulin resistance, inflammation, hypertension, cardiovascular risk, coagulation, and oocyte differentiation and maturation. Moreover, endometrial implantation and other reproductive functions are affected in obese women with complications including delayed conceptions, increased miscarriage rate, reduced outcomes in assisted conception treatments.On the contrary, weight loss programs through lifestyle modification in obese women, have been proven to restore menstrual cyclicity and ovulation and improve the likelihood of conception.
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Affiliation(s)
- Erica Silvestris
- 0000 0001 0120 3326grid.7644.1Interdisciplinary Department of Medicine, Section of Obstetrics and Gynecology, University of Bari Aldo Moro, P.za G.Cesare, 11-70124 Bari, Italy
| | - Giovanni de Pergola
- 0000 0001 0120 3326grid.7644.1Departmentof Biomedical Sciences and Human Oncology, Section of Internal Medicine and Clinical Oncology, University of Bari Aldo Moro, P.za G.Cesare, 11-70124 Bari, Italy
| | - Raffaele Rosania
- 0000 0001 0120 3326grid.7644.1Interdisciplinary Department of Medicine, Section of Obstetrics and Gynecology, University of Bari Aldo Moro, P.za G.Cesare, 11-70124 Bari, Italy
| | - Giuseppe Loverro
- 0000 0001 0120 3326grid.7644.1Interdisciplinary Department of Medicine, Section of Obstetrics and Gynecology, University of Bari Aldo Moro, P.za G.Cesare, 11-70124 Bari, Italy
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Hou YJ, Zhu CC, Duan X, Liu HL, Wang Q, Sun SC. Both diet and gene mutation induced obesity affect oocyte quality in mice. Sci Rep 2016; 6:18858. [PMID: 26732298 PMCID: PMC4702149 DOI: 10.1038/srep18858] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 11/26/2015] [Indexed: 01/19/2023] Open
Abstract
Obesity was shown to cause reproductive dysfunctions such as reduced conception, infertility and early pregnancy loss. However, the possible effects of obesity on oocyte quality are still not fully understood. In this study we investigated the effects of both diet and gene mutation induced obesity on impairments in mouse oocyte polarization, oxidative stress, and epigenetic modifications. Our results showed that high-fat diet induced obesity (HFD) and gene mutation induced obesity (ob/ob) could both impair oocyte meiotic maturation, disrupt spindle morphology, and reduce oocyte polarity. Oocytes from obese mice underwent oxidative stress, as shown by high DHE and ROS levels. Abnormal mitochondrial distributions and structures were observed in oocytes from obese groups of mice and early apoptosis signals were detected, which suggesting that oxidative stress had impaired mitochondrial function and resulted in oocyte apoptosis. Our results also showed that 5 mC levels and H3K9 and H3K27 methylation levels were altered in oocytes from obese mice, which indicated that DNA methylation and histone methylation had been affected. Our results showed that both HFD and ob/ob induced obesity affected oocyte maturation and that oxidative stress-induced early apoptosis and altered epigenetic modifications may be the reasons for reduced oocyte quality in obese mice.
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Affiliation(s)
- Yan-Jun Hou
- College of Animal Science and Technology, Nanjing Agriculture University, Nanjing, 210095, China
| | - Cheng-Cheng Zhu
- College of Animal Science and Technology, Nanjing Agriculture University, Nanjing, 210095, China
| | - Xing Duan
- College of Animal Science and Technology, Nanjing Agriculture University, Nanjing, 210095, China
| | - Hong-Lin Liu
- College of Animal Science and Technology, Nanjing Agriculture University, Nanjing, 210095, China
| | - Qiang Wang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing 210029, China
| | - Shao-Chen Sun
- College of Animal Science and Technology, Nanjing Agriculture University, Nanjing, 210095, China
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5
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Cabello E, Garrido P, Morán J, González del Rey C, Llaneza P, Llaneza-Suárez D, Alonso A, González C. Effects of resveratrol on ovarian response to controlled ovarian hyperstimulation in ob/ob mice. Fertil Steril 2014; 103:570-9.e1. [PMID: 25467042 DOI: 10.1016/j.fertnstert.2014.10.034] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 10/03/2014] [Accepted: 10/22/2014] [Indexed: 10/24/2022]
Abstract
OBJECTIVE To evaluate antidiabetic and anti-inflammatory effects of resveratrol on the ovarian response to controlled ovarian hyperstimulation (COH) in obesity-related infertility. DESIGN Experimental. SETTING University laboratory. ANIMAL(S) Sixteen female ob/ob mice and 16 female C57BL/6J mice undergoing COH. INTERVENTION(S) Wild-type placebo group; wild-type resveratrol group; ob/ob mice placebo group; ob/ob mice resveratrol group. Resveratrol 3.75 mg/kg daily for 20 days and undergoing COH protocol. MAIN OUTCOME MEASURE(S) Body and reproductive system weight, food intake, fasting blood glucose, plasma insulin and T levels, and Homeostatic Index of Insulin Resistance; interleukin-6 and tumor necrosis factor-α levels in adipose tissue by Western blot; assessment of quality and quantity of oocytes retrieved; and quantitative analysis of ovarian follicles. RESULT(S) Plasma insulin and T levels decreased and Homeostatic Index of Insulin Resistance improved in ob/ob mice treated with resveratrol. Interleukin-6 and tumor necrosis factor-α levels were significantly reverted back to near normalcy after resveratrol treatment in obese mice. Administration of resveratrol resulted in a significantly higher number of oocytes collected in wild-type mice. The number of primary, growing, preovulatory, and atretic follicles was found to be decreased in the group of obese mice treated with resveratrol when compared with the obese control group. CONCLUSION(S) Resveratrol administration could exert benefits against loss of ovarian follicles, and these actions may be mediated, at least in part, via anti-inflammatory, insulin-sensitizing, and antihyperandrogenism effects. These observations further validate the therapeutic potential of resveratrol to preserve ovarian reserve in conditions associated with obesity. Our results suggest the possible clinical use of resveratrol to enhance the ovarian response to COH in normal-weight females.
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Affiliation(s)
- Estefanía Cabello
- Department of Functional Biology, Physiology Area, University of Oviedo, Oviedo, Spain
| | - Pablo Garrido
- Department of Functional Biology, Physiology Area, University of Oviedo, Oviedo, Spain
| | - Javier Morán
- Department of Functional Biology, Physiology Area, University of Oviedo, Oviedo, Spain
| | | | - Plácido Llaneza
- Department of Obstetrics and Gynecology, Asturias Central University Hospital, Oviedo, Spain
| | | | - Ana Alonso
- Department of Functional Biology, Physiology Area, University of Oviedo, Oviedo, Spain
| | - Celestino González
- Department of Functional Biology, Physiology Area, University of Oviedo, Oviedo, Spain.
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6
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Batista AM, Gomes WA, Carvalho CCD, Monteiro PLJ, Silva FLM, Almeida FC, Soares PC, Carneiro GF, Guerra MMP. Effect of Leptin onIn VivoGoat Embryo Production. Reprod Domest Anim 2014; 49:476-80. [DOI: 10.1111/rda.12314] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 03/08/2014] [Indexed: 11/30/2022]
Affiliation(s)
- AM Batista
- Andrology Laboratory; Veterinary Medicine Department; Federal Rural University of Pernambuco; Recife PE Brazil
| | - WA Gomes
- Andrology Laboratory; Veterinary Medicine Department; Federal Rural University of Pernambuco; Recife PE Brazil
| | - CCD Carvalho
- Metabolic and Nutritional Diseases of Ruminants Laboratory; Veterinary Medicine Department; Federal Rural University of Pernambuco; Recife PE Brazil
| | - PLJ Monteiro
- Andrology Laboratory; Veterinary Medicine Department; Federal Rural University of Pernambuco; Recife PE Brazil
| | - FLM Silva
- Andrology Laboratory; Veterinary Medicine Department; Federal Rural University of Pernambuco; Recife PE Brazil
| | - FC Almeida
- Andrology Laboratory; Veterinary Medicine Department; Federal Rural University of Pernambuco; Recife PE Brazil
| | - PC Soares
- Metabolic and Nutritional Diseases of Ruminants Laboratory; Veterinary Medicine Department; Federal Rural University of Pernambuco; Recife PE Brazil
| | - GF Carneiro
- Animal Reproduction Laboratory; Academic Unit; Federal Rural University of Pernambuco; Garanhuns PE Brazil
| | - MMP Guerra
- Andrology Laboratory; Veterinary Medicine Department; Federal Rural University of Pernambuco; Recife PE Brazil
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7
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Santangelo C, Varì R, Scazzocchio B, Filesi C, Masella R. Management of reproduction and pregnancy complications in maternal obesity: which role for dietary polyphenols? Biofactors 2014; 40:79-102. [PMID: 23983164 DOI: 10.1002/biof.1126] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 06/28/2013] [Accepted: 07/02/2013] [Indexed: 02/06/2023]
Abstract
Obesity is a global and dramatic public health problem; maternal obesity represents one of the main risk factors of infertility and pregnancy complications as it is associated with adverse maternal and offspring outcomes. In the last few years, adipose tissue dysfunction associated with altered adipocytokine secretion has been suggested to play a critical role in all the phases of reproductive process. Obesity is a nutrition-related disorder. In this regard, dietary intervention strategies, such as high intake of fruit and vegetables, have shown significant effects in both preserving health and counteracting obesity-associated diseases. Evidence has been provided that polyphenols, important constituents of plant-derived food, can influence developmental program of oocyte and embryo, as well as pregnancy progression by modulating several cellular pathways. This review will examine the controversial results so far obtained on adipocytokine involvement in fertility impairment and pregnancy complications. Furthermore, the different effects exerted by polyphenols on oocyte, embryo, and pregnancy development will be also taken in account.
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Affiliation(s)
- Carmela Santangelo
- Department of Veterinary Public Health and Food Safety, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
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8
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Torres-Rovira L, Astiz S, Gonzalez-Añover P, Pallares P, Perez-Garnelo S, Perez-Solana M, Sanchez-Sanchez R, Gonzalez-Bulnes A. Intake of high saturated-fat diets disturbs steroidogenesis, lipid metabolism and development of obese-swine conceptuses from early-pregnancy stages. J Steroid Biochem Mol Biol 2014; 139:130-7. [PMID: 23318881 DOI: 10.1016/j.jsbmb.2013.01.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 12/26/2012] [Accepted: 01/04/2013] [Indexed: 10/27/2022]
Abstract
The current study indicates that life-long intake, from early-life, of an obesogenic diet with high saturated-fat (HSF) content induces dyslipidemia (high plasma concentrations of triglycerides in concurrence with low concentrations of HDL-cholesterol) in obese swine with leptin resistance (Iberian sows). In case of pregnancy, ovarian features (ovulatory efficiency and luteal steroidogenesis) of sows fed with HSF are not affected but embryo features are affected at so early stages like 28 days of pregnancy (first quarter), although embryo viability was still not affected. In this way, offspring from HSF sows showed a higher incidence of alterations in their developmental trajectory, mainly due to a higher incidence of growth retardation, in their steroidogenic activity and in their availability of triglycerides and cholesterol. In conclusion, the results obtained in the present study illustrate the deleterious effects of maternal dyslipidemia, induced by the intake of HSF diets, on the oestradiol secretion of the conceptuses at early-pregnancy stages and, thus, on their developmental and metabolic features. This article is part of a Special Issue entitled 'Pregnancy and steroids'.
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Affiliation(s)
- Laura Torres-Rovira
- Departamento de Reproducción Animal, INIA, Avda. Puerta de Hierro s/n, 28040-Madrid, Spain
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9
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Astiz S, Gonzalez-Bulnes A, Perez-Solana ML, Sanchez-Sanchez R, Torres-Rovira L. In vitro release of ovarian progesterone is decreased during the oestrous cycle and pregnancy of swine with obesity/leptin resistance. Reprod Domest Anim 2013; 48:e44-8. [PMID: 23379477 DOI: 10.1111/rda.12148] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Accepted: 01/03/2013] [Indexed: 11/25/2022]
Abstract
Previous studies indicate that reproductive prolificacy of obese swine breeds is markedly influenced by embryo losses in early pregnancy. In such period, adequate secretion of progesterone (P4) by the ovary is essential for pregnancy success. This study analyses the luteal functionality during the oestrous cycle and early pregnancy of Iberian sows and Large White x Landrace females, in terms of P4 secretion after in vitro culture of luteal tissue stimulated or not with luteinizing hormone (LH). The secretion of progesterone (expressed in ng/mg of luteal tissue or ng/mgLT) of the corpora lutea of obese Iberian swine was always hampered when compared to lean genotypes, either during early oestrous cycle (110.7 ± 37.8 vs 259.7 ± 10.2 ng/mgLT; p < 0.0001), late oestrous cycle (49.0 ± 3.5 vs 75.92 ± 7.14 ng/mgLT; p < 0.0001) or early pregnancy (38.4 ± 2.1 vs 70.7 ± 5.3 ng/mgLT; p < 0.0001). The differences in basal P4 secretion remained after stimulation with LH. Finally, P4 secretion during early pregnancy of Iberian sows decreased with age and, hence, with obesity features (46.6 ± 4.2 vs 65.5 ± 4.8 ng/mgLT; p < 0.001). In conclusion, the results of the present study provide convincing evidence of a reduced luteal function during oestrous cycle and early pregnancy of sows with obesity/leptin resistance like Iberian sows, which may contribute to the low reproductive efficiency reported in this breed.
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Affiliation(s)
- S Astiz
- Animal Reproduction Department-INIA, Madrid, Spain.
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10
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Gonzalez-Bulnes A, Astiz S, Encinas T, Gonzalez-Añover P, Perez-Solana M, Sanchez-Sanchez R, Torres-Rovira L, Tresguerres JAF. Characterization of a distinctive pattern of periovulatory leptin secretion and its relationship with ovulation rate and luteal function in swine with obesity/leptin resistance. Peptides 2012; 37:290-3. [PMID: 22841857 DOI: 10.1016/j.peptides.2012.07.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Revised: 07/19/2012] [Accepted: 07/19/2012] [Indexed: 11/17/2022]
Abstract
Patterns of leptin secretion during the estrous cycle and the possible relationship of changes in circulating leptin during the periovulatory period with ovarian function in sows of obese (Iberian breed) and lean genotype (Large White x Landrace) were evaluated in two consecutive experiments. Plasma leptin concentrations throughout the estrous cycle in lean sows remain unchanged, but Iberian females showed a periovulatory increase in circulating leptin levels without associated changes in body condition and fatness. In these sows, plasma leptin concentrations at Days -1 and 0 of the cycle were found to be positively correlated with the ovulation rate (r=0.943 and r=0.987, respectively; P<0.05 for both), but the levels of leptin at Day 0 were negatively correlated with the progesterone release from Day 3 (r=-0.557; P<0.05) and, became more evident at Day 5 of the estrous cycle (r=-0.924; P<0.005). Such relationships were not observed in the females of the lean genotype. In conclusion, the present study indicates the existence of a distinctive pattern in the periovulatory leptin secretion in swine with obesity and leptin resistance, which is associated with the number and functionality of the corpora lutea present in the subsequent cycle.
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11
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Purcell SH, Moley KH. The impact of obesity on egg quality. J Assist Reprod Genet 2011; 28:517-24. [PMID: 21625966 DOI: 10.1007/s10815-011-9592-y] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2011] [Accepted: 05/23/2011] [Indexed: 11/29/2022] Open
Abstract
Obesity in women is a concern in many countries. This causes numerous health issues; however, this review focuses on the impact of obesity on women's reproduction, and in particular the oocyte. Data from infertility clinics and experimental animal models that address the effects of obesity are presented. Bidirectional communication and metabolic support from the surrounding cumulus cells are critical for oocyte development, and the impact of obesity on these cells is also addressed. Both oocyte maturation and metabolism are impaired due to obesity, negatively impacting further development. In addition to reproductive hormones, obesity induced elevations in insulin, glucose, or free fatty acids, and changes in adipokines appear to impact the developmental competence of the oocyte. The data indicate that any one of these hormones or metabolites can impair oocyte developmental competence in vivo, and the combination of all of these factors and their interactions are the subject of ongoing investigations.
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Affiliation(s)
- Scott H Purcell
- Department of Obstetrics and Gynecology, Washington University, St. Louis, MO 63110, USA
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12
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Arias-Alvarez M, Bermejo-Alvarez P, Gutierrez-Adan A, Rizos D, Lorenzo P, Lonergan P. Effect of leptin supplementation during in vitro oocyte maturation and embryo culture on bovine embryo development and gene expression patterns. Theriogenology 2011; 75:887-96. [DOI: 10.1016/j.theriogenology.2010.10.031] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2010] [Revised: 10/20/2010] [Accepted: 10/22/2010] [Indexed: 11/27/2022]
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13
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Muñoz-Frutos J, Encinas T, Pallares P, Torres-Rovira L, Gonzalez-Añover P, Gomez-Izquierdo E, Sanchez-Sanchez R, Gonzalez-Bulnes A. Developmental competence of antral follicles and their oocytes after gonadotrophin treatment of sows with gene polymorphisms for leptin and melanocortin receptors (Iberian pig). J Assist Reprod Genet 2011; 28:437-43. [PMID: 21243422 DOI: 10.1007/s10815-011-9535-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2010] [Accepted: 01/03/2011] [Indexed: 11/26/2022] Open
Abstract
PURPOSE To evaluate possible differences in follicle and oocyte developmental competence after gonadotrophin treatment in sows of obese and lean genotypes. METHODS Follicle dynamics, ovulation rate and oocyte developmental competence to embryo were compared between females, of obese (n = 7) and lean genotypes (n = 10), treated with 1,250 I.U. of eCG and 500 I.U. of hCG. RESULTS The obese genotype showed lower numbers of follicles growing to preovulatory stages (12.4 ± 1.8 vs 18.6 ± 1.0, P < 0.05), of corpora lutea (16.0 ± 0.9 vs 23.5 ± 0.9, P < 0.05), and of recovered oocytes/embryos (8.0 ± 1.3 vs 12.9 ± 0.9, P < 0.05). Thereafter, embryo viability rates also decreased when compared to lean genotypes (62.5 vs 77.6%, P < 0.05). DISCUSSION To our knowledge, this is the first study analyzing the effect of obese genotypes on the ovarian response to exogenous gonadotrophins in a non-rodent animal model, the pig. A lower efficiency of gonadotrophin treatments for stimulation of follicle development and induction of ovulation was observed.
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