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Ahmadi S, Nemoto Y, Ohkubo T. Impact of In Ovo Leptin Injection and Dietary Protein Levels on Ovarian Growth Markers and Early Folliculogenesis in Post-Hatch Chicks ( Gallus gallus domesticus). BIOLOGY 2024; 13:69. [PMID: 38392288 PMCID: PMC10886161 DOI: 10.3390/biology13020069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 01/19/2024] [Accepted: 01/21/2024] [Indexed: 02/24/2024]
Abstract
Genetically bred for rapid growth, broiler breeder hens develop obesity and ovarian dysfunction when fed ad libitum, resembling a condition that resembles human polycystic ovary syndrome (PCOS). Nutritional control applies to post-hatched chicks from one week onward to prevent the development of a PCOS-like phenotype in adult broilers. This study investigated the impact of a growth marker, leptin, and post-hatch nutritional intake on early-life ovarian function. Fertile broiler eggs were injected in ovo with physiological saline solution or 5 µg of leptin and then incubated. After hatching, female chicks were fed ad libitum a diet containing low protein (17% low crude protein (LP)) or standard protein (22% standard crude protein (SP)). Tissues were collected from 7- and 28-day-old chicks for RT-qPCR and histological analysis. In contrast to the LP diet, the SP diet suppressed the mRNA expression of ovarian growth markers essential for folliculogenesis in post-hatched chicks. Leptin injection did not influence ovarian growth markers but increased pituitary gonadotropin transcripts in 7-day-old chicks fed with LP diet. No treatment effects on follicle activation were noted on day 7, but by day 28, in ovo leptin-treated LP-fed chicks exhibited a higher percentage of primary follicles. These changes may have resulted from the early upregulation of genes by leptin during the first week, including pituitary gonadotropins and ovarian leptin receptors. The decline in ovarian growth markers with the SP diet highlights the importance of precise post-hatch protein calculation, which may influence future ovarian function in animals. These findings may contribute to future dietary strategies to enhance broiler reproduction.
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Affiliation(s)
- Sadequllah Ahmadi
- College of Agriculture, Ibaraki University, Ami 300-0393, Japan
- Faculty of Animal Science, Afghanistan National Agricultural Sciences and Technology University, Kandahar 3801, Afghanistan
| | - Yuta Nemoto
- College of Agriculture, Ibaraki University, Ami 300-0393, Japan
| | - Takeshi Ohkubo
- College of Agriculture, Ibaraki University, Ami 300-0393, Japan
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Bhardwaj JK, Panchal H, Saraf P. Ameliorating Effects of Natural Antioxidant Compounds on Female Infertility: a Review. Reprod Sci 2020; 28:1227-1256. [PMID: 32935256 DOI: 10.1007/s43032-020-00312-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 09/03/2020] [Indexed: 12/17/2022]
Abstract
The prevalence of female infertility cases has been increasing at a frightening rate, affecting approximately 48 million women across the world. However, oxidative stress has been recognized as one of the main mediators of female infertility by causing various reproductive pathologies in females such as endometriosis, PCOS, preeclampsia, spontaneous abortion, and unexplained infertility. Nowadays, concerned women prefer dietary supplements with antioxidant properties over synthetic drugs as a natural way to lessen the oxidative stress and enhance their fertility. Therefore, the current review is an attempt to explore the efficacy of various natural antioxidant compounds including vitamins, carotenoids, and plant polyphenols and also of some medicinal plants in improving the fertility status of females. Our summarization of recent findings in the current article would pave the way toward the development of new possible antioxidant therapy to treat infertility in females. Natural antioxidant compounds found in fruits, vegetables, and other dietary sources, alone or in combination with other antioxidants, were found to be effective in ameliorating the oxidative stress-mediated infertility problems in both natural and assisted reproductive settings. Numerous medicinal plants showed promising results in averting the various reproductive disorders associated with female infertility, suggesting a plant-based herbal medicine to treat infertility. Although optimum levels of natural antioxidants have shown favorable results, however, their excessive intake may have adverse health impacts. Therefore, larger well-designed, dose-response studies in humans are further warranted to incorporate natural antioxidant compounds into the clinical management of female infertility.
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Affiliation(s)
- Jitender Kumar Bhardwaj
- Reproductive Physiology Laboratory, Department of Zoology, Kurukshetra University, Kurukshetra, Haryana, 136119, India.
| | - Harish Panchal
- Reproductive Physiology Laboratory, Department of Zoology, Kurukshetra University, Kurukshetra, Haryana, 136119, India
| | - Priyanka Saraf
- Reproductive Physiology Laboratory, Department of Zoology, Kurukshetra University, Kurukshetra, Haryana, 136119, India
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Zuñiga-Garcia S, Meza-Herrera CA, Mendoza-Cortina A, Otal-Salaverri J, Perez-Marin C, Lopez-Flores NM, Carrillo E, Calderon-Leyva G, Gutierrez-Guzman UN, Veliz-Deras FG. Effect of Social Rank upon Estrus Induction and Some Reproductive Outcomes in Anestrus Goats Treated With Progesterone + eCG. Animals (Basel) 2020; 10:E1125. [PMID: 32630701 PMCID: PMC7401613 DOI: 10.3390/ani10071125] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/27/2020] [Accepted: 06/29/2020] [Indexed: 01/15/2023] Open
Abstract
We evaluated the possible role of the social rank [R] (i.e., low-LSR, middle-MSR, or high-HSR) in anestrus goats exposed to a P4 + eCG [D] (i.e., 100 or 350 IU) estrus induction protocol (EIP). Adult, multiparous (two to three lactations), multiracial, dairy-type goats (Alpine-Saanen-Nubian x Criollo goats (n = 70; 25°51' North) managed under stall-fed conditions were all ultrasound evaluated to confirm anestrus status while the R was determined 30 d prior to the EIP. The variables of estrus induction (EI, %), estrus latency (LAT, h), estrus duration (DUR, h), ovulation (OVU, %), ovulation rate (OR, n), corpus luteum size (CLS, cm), pregnancy (PREG, %), kidding (KIDD, %), and litter size (LS, n) as affected by R, D, and the R × D interaction, were evaluated. While OVU and CLS favored (p < 0.05) HSR (96% and + 1.04 ± 0.07 cm), an increased (p < 0.05) LS occurred in D350 vs. D100 (2.06 ± 0.2 vs. 1.36 ± 0.2); neither R nor D affected (p > 0.05; 38.5%) KIDD. However, EI, LAT, DUR, OR, and PREG were affected by the R × D interaction. The HSR group had the largest (p < 0.05) EI % and DUR h, irrespective of D. The shortest (p < 0.05) LAT occurred in D350, irrespective of R. While the largest (p < 0.05) OR occurred in HSR and MSR within D350, the HSR + D350 group had the largest PREG (p < 0.05). These research outcomes are central to defining out-of-season reproductive strategies designed to attenuate seasonal reproduction in goats.
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Affiliation(s)
- Santiago Zuñiga-Garcia
- Unidad Laguna, Universidad Autónoma Agraria Antonio Narro, Periférico Raúl López Sánchez y Carretera a Santa Fe, 27054 Torreón, Coahuila, Mexico; (S.Z.-G.); (G.C.-L.)
| | - Cesar A. Meza-Herrera
- Unidad Regional Universitaria de Zonas Áridas, Universidad Autónoma Chapingo, 35230 Bermejillo, Durango, Mexico; (C.A.M.-H.); (A.M.-C.); (N.M.L.-F.)
| | - Adela Mendoza-Cortina
- Unidad Regional Universitaria de Zonas Áridas, Universidad Autónoma Chapingo, 35230 Bermejillo, Durango, Mexico; (C.A.M.-H.); (A.M.-C.); (N.M.L.-F.)
| | - Julio Otal-Salaverri
- Departamento de Producción Animal, Facultad de Veterinaria, Universidad de Murcia, 30100 Murcia, Spain;
| | - Carlos Perez-Marin
- Instituto de Estudios de Posgrado, Facultad de Veterinaria, Universidad de Córdoba, 14014 Córdoba, Spain;
| | - Noé M. Lopez-Flores
- Unidad Regional Universitaria de Zonas Áridas, Universidad Autónoma Chapingo, 35230 Bermejillo, Durango, Mexico; (C.A.M.-H.); (A.M.-C.); (N.M.L.-F.)
- Instituto de Estudios de Posgrado, Facultad de Veterinaria, Universidad de Córdoba, 14014 Córdoba, Spain;
| | | | - Guadalupe Calderon-Leyva
- Unidad Laguna, Universidad Autónoma Agraria Antonio Narro, Periférico Raúl López Sánchez y Carretera a Santa Fe, 27054 Torreón, Coahuila, Mexico; (S.Z.-G.); (G.C.-L.)
| | - Ulises N. Gutierrez-Guzman
- Facultad de Agricultura y Zootecnia, Universidad Juárez del Estado de Durango, 35111 Venecia, Durango, Mexico;
| | - Francisco G. Veliz-Deras
- Unidad Laguna, Universidad Autónoma Agraria Antonio Narro, Periférico Raúl López Sánchez y Carretera a Santa Fe, 27054 Torreón, Coahuila, Mexico; (S.Z.-G.); (G.C.-L.)
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Body size at birth, early-life growth and the timing of the menopausal transition and natural menopause. Reprod Toxicol 2020; 92:91-97. [DOI: 10.1016/j.reprotox.2019.02.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 02/06/2019] [Accepted: 02/28/2019] [Indexed: 11/17/2022]
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Jazwiec PA, Li X, Matushewski B, Richardson BS, Sloboda DM. Fetal Growth Restriction Is Associated With Decreased Number of Ovarian Follicles and Impaired Follicle Growth in Young Adult Guinea Pig Offspring. Reprod Sci 2019; 26:1557-1567. [PMID: 30744513 DOI: 10.1177/1933719119828041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND The mechanisms mediating the impacts of fetal growth restriction (FGR) on follicular development are commonly studied in mouse/rat models, where ovarian development occurs largely during the early postnatal period. These models have shown that FGR is associated with premature follicle loss, early pubertal onset, and accelerated ovarian aging. Whether the same occurs in precocious species is unknown. OBJECTIVE Since guinea pig follicle development occurs in utero in a manner consistent with human ovarian development, we sought to determine whether FGR had similar impacts on guinea pig ovarian development. METHODS Dunkin-Hartley guinea pig dams were randomized to receive a control (CON) or a nutrient-restricted diet (FGR) prior to conception until weaning. Offspring ovaries were collected at prepubertal (postnatal day [P] 25) and young adult (P110) time points. RESULTS Prepubertal offspring exposed to FGR showed little differences in ovarian transcript levels and follicle counts. Young adult FGR offspring, however, showed reductions in the number of transitioning, primary, and antral follicles, as well as corpora lutea. This loss in follicles was associated with reduced insulin-like growth factor receptor and growth differentiation factor-9 messenger RNA levels in FGR P110 offspring compared to CON. CONCLUSION We demonstrate that FGR in guinea pigs is accompanied by perturbations in signaling pathways essential for proper follicle growth and manifests as reductions in growing follicles in offspring, but these changes do not manifest until postpuberty. These data support the fact that accelerated reproductive maturation/aging is a conserved phenotype that is associated with in utero nutritional adversity.
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Affiliation(s)
- Patrycja A Jazwiec
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada
| | - Xinglin Li
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada
| | - Brad Matushewski
- Department of Obstetrics and Gynecology, University of Western Ontario, London, Ontario, Canada
- Department of Physiology and Pharmacology, University of Western Ontario, London, Ontario, Canada
- Department of Pediatrics, University of Western Ontario, London, Ontario, Canada
- Children's Health Research Institute, University of Western Ontario, London, Ontario, Canada
- Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada
| | - Bryan S Richardson
- Department of Obstetrics and Gynecology, University of Western Ontario, London, Ontario, Canada
- Department of Physiology and Pharmacology, University of Western Ontario, London, Ontario, Canada
- Department of Pediatrics, University of Western Ontario, London, Ontario, Canada
- Children's Health Research Institute, University of Western Ontario, London, Ontario, Canada
- Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada
| | - Deborah M Sloboda
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada
- Departments of Pediatrics and Obstetrics and Gynecology, McMaster University, Hamilton, Canada
- Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Canada
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Bleil ME, English P, Valle J, Woods NF, Crowder KD, Gregorich SE, Cedars MI. Is in utero exposure to maternal socioeconomic disadvantage related to offspring ovarian reserve in adulthood? Womens Midlife Health 2018; 4:5. [PMID: 30766715 PMCID: PMC6297989 DOI: 10.1186/s40695-018-0033-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 02/25/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Because the ovarian follicle pool is established in utero, adverse exposures during this period may be especially impactful on the size and health of the initial follicle endowment, potentially shaping trajectories of ovarian follicle loss and the eventual onset of menopause. Building on a robust literature linking socioeconomic status (SES) and menopausal timing, the current study examined adverse prenatal exposures related to maternal SES, hypothesizing that greater maternal socioeconomic disadvantage would be associated with lower ovarian reserve in the adult offspring. METHODS In a healthy, community-based sub-sample (n = 350) of reproductive age participants in the OVA Study (2006-2011), prenatal maternal SES was examined in relation to two biomarkers of ovarian reserve, antimullerian hormone (AMH) and antral follicle count (AFC). Prenatal maternal SES was assessed indirectly using maternal addresses abstracted from participant birth certificates, geocoded, and linked to US Census-derived variables, including neighborhood-level characteristics: education (% of individuals with a HS diploma); poverty (% of families below the poverty line); unemployment (% of individuals > 16 years who are unemployed); and income (median family income). RESULTS In separate covariate-adjusted linear regression models (following the backward elimination of main effects with P > .10), greater maternal neighborhood education was related to higher ovarian reserve as marked by higher levels of offspring AMH (beta = .142, P < .001) and AFC (beta = .092, P < .10) with models accounting for 19.6% and 21.5% of the variance in AMH and AFC, respectively. In addition, greater maternal neighborhood poverty was related to lower ovarian reserve as marked by lower offspring AMH (beta = -.144, P < .01), with the model accounting for 19.5% of the variance in AMH. CONCLUSIONS Maternal socioeconomic disadvantage measured indirectly at the neighborhood level was associated with lower ovarian reserve among the adult offspring, independently of offspring SES and other potential confounding factors. This suggests SES-related adversity exposures may have a detrimental impact on the size or health of the initial follicle endowment, leading to accelerated follicle loss over time.
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Affiliation(s)
- Maria E. Bleil
- Department of Family and Child Nursing, University of Washington, Box 357262, Seattle, WA 98195 USA
| | - Paul English
- California Department of Public Health, California Environmental Health Tracking Program, Richmond, CA 94804 USA
| | - Jhaqueline Valle
- California Department of Public Health, California Environmental Health Tracking Program, Richmond, CA 94804 USA
| | - Nancy F. Woods
- Department of Biobehavioral Nursing and Health Informatics, University of Washington, Seattle, WA 98195 USA
| | - Kyle D. Crowder
- Department of Sociology, University of Washington, Seattle, WA 98195 USA
| | - Steven E. Gregorich
- Department of Medicine, University of California San Francisco, San Francisco, CA 94143 USA
| | - Marcelle I. Cedars
- Department of Obstetrics, Gynecology, & Reproductive Sciences, University of California San Francisco, San Francisco, CA 94143 USA
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Sominsky L, Ziko I, Soch A, Smith JT, Spencer SJ. Neonatal overfeeding induces early decline of the ovarian reserve: Implications for the role of leptin. Mol Cell Endocrinol 2016; 431:24-35. [PMID: 27154163 DOI: 10.1016/j.mce.2016.05.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 04/03/2016] [Accepted: 05/02/2016] [Indexed: 01/07/2023]
Abstract
Early life nutrition is crucial for reproduction. Overweight and obese girls are more likely to experience early menarche, increasing the risk of adult disease. We have previously demonstrated neonatal overfeeding in the rat leads to accelerated growth, early puberty and increased circulating levels of leptin, an adipocyte-derived hormone that regulates puberty. However, the long-term consequences of accelerated puberty and metabolic dysfunction on ovarian reserve are unknown. Here we show that neonatal overfeeding reduced the number of ovarian follicles in adult rats; specifically, the primordial follicle pool was reduced compared to controls. The reduction of ovarian reserve coincided with a diminished release of pituitary gonadotropins at ovulation and altered expression of ovarian markers important for follicular recruitment and survival. These changes were associated with increased levels of ovarian leptin and its receptor. Postnatal administration of leptin antagonist did not reverse the weight gain induced by early life overfeeding, but rescued the decline in the primordial follicle pool and abolished the differences in circulating leptin and gonadotropins. Our findings suggest that the acute effects of elevated circulating leptin may be responsible for the long-term reproductive outcomes after neonatal overfeeding, leading to premature ovarian ageing and changes in reproductive efficiency.
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Affiliation(s)
- Luba Sominsky
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Australia.
| | - Ilvana Ziko
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Australia
| | - Alita Soch
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Australia
| | - Jeremy T Smith
- School of Anatomy, Physiology and Human Biology, The University of Western Australia, Perth, Australia
| | - Sarah J Spencer
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Australia
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Chan KA, Bernal AB, Vickers MH, Gohir W, Petrik JJ, Sloboda DM. Early life exposure to undernutrition induces ER stress, apoptosis, and reduced vascularization in ovaries of adult rat offspring. Biol Reprod 2015; 92:110. [PMID: 25810471 DOI: 10.1095/biolreprod.114.124149] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Accepted: 03/16/2015] [Indexed: 12/15/2022] Open
Abstract
Maternal nutritional restriction has been shown to induce impairments in a number of organ systems including the ovary. We have previously shown that maternal undernutrition induces fetal growth restriction and low birth weight, and results in an offspring ovarian phenotype characteristic of premature ovarian aging with reduced ovarian reserve. In the present study, we set out to investigate the underlying mechanisms that lead offspring of undernourished mothers to premature ovarian aging. Pregnant dams were randomized to 1) a standard diet throughout pregnancy and lactation (control), 2) a calorie-restricted (50% of control) diet during pregnancy, 3) a calorie-restricted (50% of control) diet during pregnancy and lactation, or 4) a calorie-restricted (50% of control) diet during lactation alone. The present study shows that early life undernutrition-induced reduction of adult ovarian follicles may be mediated by increased ovarian endoplasmic reticulum stress in a manner that increased follicular apoptosis but not autophagy. These changes were associated with a loss of ovarian vessel density and are consistent with an accelerated ovarian aging phenotype. Whether these changes are mediated specifically by a reduction in the local antioxidant environment is unclear, although our data suggest the possibility that ovarian melatonin may play a part in early life nutritional undernutrition and impaired offspring folliculogenesis.
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Affiliation(s)
- Kaitlyn A Chan
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Angelica B Bernal
- Liggins Institute and Gravida: National Centre for Growth and Development, University of Auckland, New Zealand
| | - Mark H Vickers
- Liggins Institute and Gravida: National Centre for Growth and Development, University of Auckland, New Zealand
| | - Wajiha Gohir
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Jim J Petrik
- Department of Obstetrics and Gynecology, McMaster University, Hamilton, Ontario, Canada Department of Biomedical Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Deborah M Sloboda
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada Department of Obstetrics and Gynecology, McMaster University, Hamilton, Ontario, Canada
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Walsh S, Mossa F, Butler S, Berry D, Scheetz D, Jimenez-Krassel F, Tempelman R, Carter F, Lonergan P, Evans A, Ireland J. Heritability and impact of environmental effects during pregnancy on antral follicle count in cattle. J Dairy Sci 2014; 97:4503-11. [DOI: 10.3168/jds.2013-7758] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Accepted: 04/05/2014] [Indexed: 01/21/2023]
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Gereltsetseg G, Matsuzaki T, Iwasa T, Kinouchi R, Nakazawa H, Yamamoto S, Kuwahara A, Yasui T, Irahara M. Delay in the onset of puberty of intrauterine growth retarded female rats cannot be rescued with hypernutrition after birth. Endocr J 2012; 59:963-72. [PMID: 22850131 DOI: 10.1507/endocrj.ej11-0392] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Perinatal undernutrition is known to disturb reproductive development, in particular by delaying the onset of puberty in certain species. Using a rat model, we studied whether hypernutrition after birth can rescue the delayed onset of puberty in intrauterine undernourished female rats. Pregnant rats were divided into two groups: the maternal normal nutrition (mNN, n = 8) and maternal undernutrition (mUN, n = 9) groups. In the mUN group, dams received 50% of the daily food intake of the mNN group from day 15 of pregnancy until delivery. Pups from both the mNN and mUN dams were then separated into two groups, based on their postnatal feeding conditions: control-normal nutrition (control-NN), control-hypernutrition (control-HN), Intrauterine growth retardation (IUGR)-normal nutrition (IUGR-NN), and IUGR-hypernutrition (IUGR-HN). Litter sizes of the hypernutrition groups were controlled to five pups per dam, and normal nutrition groups to 12-13 pups per dam. From postnatal day 30, pups were inspected daily for vaginal opening (VO). The age of VO in the IUGR-NN group was 35.7 ± 2.4 days (mean ± SD), which was significantly delayed compared to that of the control-NN group (33.8 ± 0.8 days). The age of VO in the IUGR-HN group was 35.5 ± 2.3 days, which was significantly delayed compared to that of the control-HN group (33.5 ± 0.8 days). Interestingly, the age of VO did not differ between the IUGR-NN and IUGR-HN groups. In conclusion, maternal undernutrition delays puberty in female offspring, and this delay in puberty cannot be rescued with hypernutrition after birth.
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Affiliation(s)
- Ganbat Gereltsetseg
- Department of Obstetrics and Gynecology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima 770-8503, Japan
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Protein restriction during pregnancy induces hypertension in adult female rat offspring--influence of oestradiol. Br J Nutr 2011; 107:665-73. [PMID: 21787449 DOI: 10.1017/s0007114511003448] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We previously reported that gestational dietary protein restriction in rats causes sex-related differences in development of blood pressure (BP) in the offspring, which is more pronounced in males than in females. As such effects may depend on sex hormones, we investigated the role of oestradiol in the development of hypertension in female offspring of protein-restricted dams. Female offspring of pregnant rats fed normal (20 %) or protein-restricted (6 %) casein diets throughout pregnancy were kept either intact, ovariectomised or ovariectomised with oestradiol supplementation. BP, Plasma oestradiol and testosterone levels, and vascular oestrogen receptor (ER) were examined. BP was significantly higher and plasma oestradiol levels were significantly lower ( - 34 %) in intact protein-restricted female offspring compared to corresponding controls. Further decrease in oestradiol levels by ovariectomy exacerbated hypertension in the protein-restricted females, with an earlier onset and more prominent elevation in BP compared to controls. Oestradiol supplementation in ovariectomised protein-restricted females significantly reversed ovariectomy-induced hypertension but did not normalise BP to control levels. The hypertensive protein-restricted females have reduced vascular ERα expression that was unaffected by ovariectomy or oestradiol replacement. In addition, testosterone levels were significantly higher by 2·4-, 3·4- and 2·8-fold in intact, ovariectomised and oestradiol-replaced protein-restricted females compared to corresponding controls. The present data show that: (1) hypertension in protein-restricted adult female offspring is associated with reduced plasma oestradiol levels; (2) oestradiol protects and limits the severity of hypertension in protein-restricted females and contributes to sexual dimorphism; (3) oestradiol replacement fails to completely reverse hypertension, which may be related to limited availability of vascular ERα receptors and/or increased circulating testosterone levels.
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Bernal AB, Vickers MH, Hampton MB, Poynton RA, Sloboda DM. Maternal undernutrition significantly impacts ovarian follicle number and increases ovarian oxidative stress in adult rat offspring. PLoS One 2010; 5:e15558. [PMID: 21179452 PMCID: PMC3001490 DOI: 10.1371/journal.pone.0015558] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2010] [Accepted: 11/12/2010] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND We have shown recently that maternal undernutrition (UN) advanced female pubertal onset in a manner that is dependent upon the timing of UN. The long-term consequence of this accelerated puberty on ovarian function is unknown. Recent findings suggest that oxidative stress may be one mechanism whereby early life events impact on later physiological functioning. Therefore, using an established rodent model of maternal UN at critical windows of development, we examined maternal UN-induced changes in offspring ovarian function and determined whether these changes were underpinned by ovarian oxidative stress. METHODOLOGY/PRINCIPAL FINDINGS Our study is the first to show that maternal UN significantly reduced primordial and secondary follicle number in offspring in a manner that was dependent upon the timing of maternal UN. Specifically, a reduction in these early stage follicles was observed in offspring born to mothers undernourished throughout both pregnancy and lactation. Additionally, antral follicle number was reduced in offspring born to all mothers that were UN regardless of whether the period of UN was restricted to pregnancy or lactation or both. These reductions were associated with decreased mRNA levels of genes critical for follicle maturation and ovulation. Increased ovarian protein carbonyls were observed in offspring born to mothers UN during pregnancy and/or lactation and this was associated with peroxiredoxin 3 hyperoxidation and reduced mRNA levels; suggesting compromised antioxidant defence. This was not observed in offspring of mothers UN during lactation alone. CONCLUSIONS We propose that maternal UN, particularly at a time-point that includes pregnancy, results in reduced offspring ovarian follicle numbers and mRNA levels of regulatory genes and may be mediated by increased ovarian oxidative stress coupled with a decreased ability to repair the resultant oxidative damage. Together these data are suggestive of maternal UN potentially contributing to premature ovarian ageing in offspring.
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Affiliation(s)
- Angelica B. Bernal
- The Liggins Institute, The University of Auckland and the National Research Centre for Growth and Development, Auckland, New Zealand
| | - Mark H. Vickers
- The Liggins Institute, The University of Auckland and the National Research Centre for Growth and Development, Auckland, New Zealand
| | - Mark B. Hampton
- Free Radical Research Group, Department of Pathology, University of Otago, Christchurch, New Zealand
| | - Rebecca A. Poynton
- Free Radical Research Group, Department of Pathology, University of Otago, Christchurch, New Zealand
| | - Deborah M. Sloboda
- The Liggins Institute, The University of Auckland and the National Research Centre for Growth and Development, Auckland, New Zealand
- * E-mail:
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