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Yang J, Wang Y, Wang G, Guo Z, Li X, Lu J, Tu H, Li S, Wan J, Guan G, Chen L. Leptin A deficiency affecting the mitochondrial dynamics of aged oocytes in medaka (Oryzias latipes). Mol Cell Endocrinol 2024; 593:112345. [PMID: 39153543 DOI: 10.1016/j.mce.2024.112345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 08/01/2024] [Accepted: 08/12/2024] [Indexed: 08/19/2024]
Abstract
Mitochondrial dysfunction and metabolic disorder have been associated to age-related subfertility, however, the precise molecular mechanism controlling the development of fertile oocytes in aging females remains elusive. Leptin plays an important role in the maintenance of energy homeostasis, as both excessive or insufficient levels can affect the body weight and fertility of mice. Here, we report that leptin A deficiency affects growth and shortens reproductive lifespan by reducing fertility in medaka (Oryzias latipes). Targeted disruption of lepa (lepa-/-) females reduced their egg laying and fertility compared to normal 3-month-old females (lepa+/+ sexual maturity), with symptoms worsening progressively at the age of 6 months and beyond. Transcriptomic analysis showed that differentially expressed genes involved in metabolic and mitochondrial pathways were significantly altered in lepa-/- ovaries compared with the normal ovaries at over 6 months old. The expression levels of the autophagy-promoting genes ulk1a, atg7 and atg12 were significantly differentiated between normal and lepa-/- ovaries, which were further confirmed by quantitative polymerase chain reaction analysis, indicating abnormal autophagy activation and mitochondrial dysfunction in oocyte development lacking lepa. Transmission electron microscopy observations further confirmed these mitochondrial disorders in lepa-deficient oocytes. In summary, these research findings provide novel insights into how leptin influences female fertility through mitochondrial-mediated oocyte development.
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Affiliation(s)
- Jihui Yang
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, PR China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, PR China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, PR China
| | - Ying Wang
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, PR China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, PR China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, PR China
| | - Guangxing Wang
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, PR China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, PR China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, PR China
| | - Zhenhua Guo
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, PR China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, PR China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, PR China
| | - Xinwen Li
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, PR China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, PR China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, PR China
| | - Jigang Lu
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, PR China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, PR China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, PR China
| | - Huaming Tu
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, PR China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, PR China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, PR China
| | - Shilin Li
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, PR China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, PR China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, PR China
| | - Jinming Wan
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, PR China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, PR China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, PR China
| | - Guijun Guan
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, PR China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, PR China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, PR China.
| | - Liangbiao Chen
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, PR China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, PR China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, PR China.
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Chico-Barba G, Sámano R, Martínez-Rojano H, Morales-Hernández RM, Barrientos-Galeana E, Luna-Hidalgo A, Kaufer-Horwitz M, Obrador GT, Villa-Romero AR. Total Gestational Weight Gain Is Explained by Leptin and Body Fat, Regardless of Pre-Pregnancy Body Mass Index and Other Adipokines, in Mexican Adolescents. Nutrients 2024; 16:2147. [PMID: 38999894 PMCID: PMC11242962 DOI: 10.3390/nu16132147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Revised: 06/30/2024] [Accepted: 07/03/2024] [Indexed: 07/14/2024] Open
Abstract
Pre-pregnancy body mass index (pBMI) is a predictor of gestational weight gain (GWG). However, other factors, such as adipokines and inflammation markers, may also be associated with GWG. The aim of the study was to determine the association of leptin, adiponectin, irisin, and C-reactive protein, with GWG in adolescents. A longitudinal study was conducted from 2018 to 2023 in adolescents with a clinically healthy pregnancy. The assessments included sociodemographic and clinical data, pBMI, percent of body fat, serum concentrations of leptin, adiponectin, irisin, and high-sensitivity C-reactive protein (hsCRP), and total GWG adequacy. Cox regression models were performed, the outcome variables were inadequate and excessive GWG. In 198 participants, being overweight/obesity was marginally associated with a protective effect against inadequate GWG (HR = 0.44, 95%CI = 0.18-1.06), regardless of maternal characteristics and adipokines. Leptin (HR = 1.014, 95%CI = 1.008-1.021), and body fat percent (HR = 1.11, 95%CI = 1.05-1.17) were associated with a higher risk of excessive GWG, independent of other maternal variables such as pBMI, while adiponectin was associated with a lower risk. These findings suggest that, in Mexican adolescents, adipose tissue and its adipokines during pregnancy may play a more significant role in the final GWG than body weight.
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Affiliation(s)
- Gabriela Chico-Barba
- Programa de Maestría y Doctorado en Ciencias Médicas, Odontológicas y de la Salud, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
- Coordinación de Nutrición y Bioprogramación, Instituto Nacional de Perinatología, Mexico City 11000, Mexico
| | - Reyna Sámano
- Coordinación de Nutrición y Bioprogramación, Instituto Nacional de Perinatología, Mexico City 11000, Mexico
| | - Hugo Martínez-Rojano
- Sección de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Mexico City 11340, Mexico
| | | | - Edgar Barrientos-Galeana
- Coordinación de Nutrición y Bioprogramación, Instituto Nacional de Perinatología, Mexico City 11000, Mexico
| | - Andrea Luna-Hidalgo
- Coordinación de Nutrición y Bioprogramación, Instituto Nacional de Perinatología, Mexico City 11000, Mexico
| | - Martha Kaufer-Horwitz
- Dirección de Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City 14080, Mexico
| | | | - Antonio Rafael Villa-Romero
- División de Investigación, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
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Miturski A, Gęca T, Stupak A, Kwaśniewski W, Semczuk-Sikora A. Influence of Pre-Pregnancy Obesity on Carbohydrate and Lipid Metabolism with Selected Adipokines in the Maternal and Fetal Compartment. Nutrients 2023; 15:2130. [PMID: 37432262 DOI: 10.3390/nu15092130] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 04/26/2023] [Accepted: 04/27/2023] [Indexed: 07/12/2023] Open
Abstract
A higher body mass index (BMI) before pregnancy is associated with an increased risk of maternal and perinatal complications. This study aimed to analyze selected parameters of carbohydrate and lipid metabolism, including adipokines, in obese pre-pregnant women, and their influence on the birth weight of newborns. MATERIALS AND METHODS The study group (O) consisted of 34 pregnant women with higher BMI (obese) before pregnancy. The control group (C) was 27 pregnant women with target BMI and physiological pregnancy. The BMI index: body weight [kg]/(height [m]2 was assessed on the first obstetrical visit. The research material was the serum of pregnant women collected in the third trimester of pregnancy and umbilical cord blood collected immediately after delivery. Selected parameters of carbohydrate and lipid metabolism and adipokines were determined. RESULTS There were no statistically significant differences between the study group and the control group concerning the concentrations of insulin, glucose, VLDL, adiponectin, TNF-α, HOMA-IR, as well as LDH and cholesterol in maternal blood serum and umbilical cord blood serum. Total cholesterol and HDL in both maternal blood serum and umbilical cord blood were statistically significantly lower than those in the control group. The concentration of triglycerides (TG) and resistin in the blood serum of obese mothers were higher than those in the control group (p < 0.05). However, no statistically significant differences were found between the two groups regarding the concentrations of TG and resistin in the umbilical cord blood. The concentration of LDL cholesterol in the umbilical blood serum in the obese group was statistically significantly lower than that in the control group. The concentration of leptin in maternal blood serum and umbilical cord blood serum in the study group was statistically significantly higher than that in the control group. CONCLUSIONS Pregestational obesity does not substantially affect the basic parameters of carbohydrate metabolism in pregnant women, but it disturbs the lipid profile, which is manifested by a significant increase in triglycerides and a decrease in the level of HDL cholesterol in the serum. Preexisting obesity increases the concentration of leptin and resistin in the serum of pregnant women, which may be caused by the increased volume of adipose tissue. The concentrations of leptin and resistin in the blood of pregnant women correlate positively, and the concentrations of adiponectin and TNF-α negatively correlate with pre-pregnancy BMI values. There is a positive correlation between the concentration of leptin in the serum of umbilical cord blood and the birth weight of the newborn, which suggests that this parameter contributes to the pathomechanism of macrosomia.
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Affiliation(s)
- Andrzej Miturski
- Department of Gynaecology, 1st Clinical Military Hospital in Lublin, Al. Racławickie 23, 20-049 Lublin, Poland
| | - Tomasz Gęca
- Chair and Department of Obstetrics and Pathology of Pregnancy, Medical University of Lublin, Staszica 16 Street, 20-081 Lublin, Poland
| | - Aleksandra Stupak
- Chair and Department of Obstetrics and Pathology of Pregnancy, Medical University of Lublin, Staszica 16 Street, 20-081 Lublin, Poland
| | - Wojciech Kwaśniewski
- Department of Gynecologic Oncology and Gynecology, Medical University of Lublin, Staszica 16 Street, 20-081 Lublin, Poland
| | - Anna Semczuk-Sikora
- Chair and Department of Obstetrics and Pathology of Pregnancy, Medical University of Lublin, Staszica 16 Street, 20-081 Lublin, Poland
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Mori S, Asakura K, Sasaki S, Nishiwaki Y. Misreporting of height and weight by primary school children in Japan: a cross-sectional study on individual and environmental determinants. BMC Public Health 2023; 23:775. [PMID: 37106327 PMCID: PMC10134671 DOI: 10.1186/s12889-023-15682-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 04/15/2023] [Indexed: 04/29/2023] Open
Abstract
BACKGROUND Appropriate body constitution during childhood is important for future health. However, it has been suggested that thinness is increasing among adolescent girls and boys in Japan. Since misreporting of height/weight may be a possible reflection of the child's ideal body image, we investigated the magnitude and direction of height/weight misreporting and its determinants among Japanese young adolescents. METHODS A total of 1019 children in public primary schools were included in the analysis. Both measured and self-reported values of height/weight were obtained. Misreporting of height/weight was calculated by subtracting the measured value from the self-reported value. The association between misreporting and several variables such as the BMI z-score of individuals and body constitution of surrounding children was explored by multivariate linear mixed models. RESULTS As BMI z-score increased, 'overreporting' of height by boys and 'underreporting' of height by girls became larger (p = 0.06 in boys, p = 0.02 in girls). Both boys and girls with a larger body size tended to underreport their weight (p < 0.01 in boys, p < 0.01 in girls). Boys who belonged to a school with a larger average BMI z-score were more likely to overreport their weight. This tendency was not observed for girls. CONCLUSIONS Self-reported height/weight was generally accurate in Japanese primary school children. However, even primary school children misreported their height/weight intentionally like adults, possibly due to social pressure to lose weight or that not to stand out. Thus, health education about appropriate body constitution should be provided from the beginning of adolescence, particularly for girls.
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Affiliation(s)
- Sachie Mori
- Department of Environmental and Occupational Health, Toho University Graduate School of Medicine, Omori-Nishi 5-21-16, Ota-Ku, Tokyo, #143-8540, Japan
| | - Keiko Asakura
- Department of Environmental and Occupational Health, School of Medicine, Toho University, Omori-Nishi 5-21-16, Ota-Ku, Tokyo, #143-8540, Japan.
| | - Satoshi Sasaki
- Department of Social and Preventive Epidemiology, School of Public Health, the University of Tokyo, Hongo 7-3-1, Bunkyo-Ku, Tokyo, #113-0033, Japan
| | - Yuji Nishiwaki
- Department of Environmental and Occupational Health, School of Medicine, Toho University, Omori-Nishi 5-21-16, Ota-Ku, Tokyo, #143-8540, Japan
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Brito VN, Canton APM, Seraphim CE, Abreu AP, Macedo DB, Mendonca BB, Kaiser UB, Argente J, Latronico AC. The Congenital and Acquired Mechanisms Implicated in the Etiology of Central Precocious Puberty. Endocr Rev 2023; 44:193-221. [PMID: 35930274 PMCID: PMC9985412 DOI: 10.1210/endrev/bnac020] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Indexed: 01/20/2023]
Abstract
The etiology of central precocious puberty (CPP) is multiple and heterogeneous, including congenital and acquired causes that can be associated with structural or functional brain alterations. All causes of CPP culminate in the premature pulsatile secretion of hypothalamic GnRH and, consequently, in the premature reactivation of hypothalamic-pituitary-gonadal axis. The activation of excitatory factors or suppression of inhibitory factors during childhood represent the 2 major mechanisms of CPP, revealing a delicate balance of these opposing neuronal pathways. Hypothalamic hamartoma (HH) is the most well-known congenital cause of CPP with central nervous system abnormalities. Several mechanisms by which hamartoma causes CPP have been proposed, including an anatomical connection to the anterior hypothalamus, autonomous neuroendocrine activity in GnRH neurons, trophic factors secreted by HH, and mechanical pressure applied to the hypothalamus. The importance of genetic and/or epigenetic factors in the underlying mechanisms of CPP has grown significantly in the last decade, as demonstrated by the evidence of genetic abnormalities in hypothalamic structural lesions (eg, hamartomas, gliomas), syndromic disorders associated with CPP (Temple, Prader-Willi, Silver-Russell, and Rett syndromes), and isolated CPP from monogenic defects (MKRN3 and DLK1 loss-of-function mutations). Genetic and epigenetic discoveries involving the etiology of CPP have had influence on the diagnosis and familial counseling providing bases for potential prevention of premature sexual development and new treatment targets in the future. Global preventive actions inducing healthy lifestyle habits and less exposure to endocrine-disrupting chemicals during the lifespan are desirable because they are potentially associated with CPP.
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Affiliation(s)
- Vinicius N Brito
- Discipline of Endocrinology & Metabolism, Department of Internal
Medicine, University of Sao Paulo Medical School, University of Sao
Paulo, Sao Paulo 01246 903, Brazil
| | - Ana P M Canton
- Discipline of Endocrinology & Metabolism, Department of Internal
Medicine, University of Sao Paulo Medical School, University of Sao
Paulo, Sao Paulo 01246 903, Brazil
| | - Carlos Eduardo Seraphim
- Discipline of Endocrinology & Metabolism, Department of Internal
Medicine, University of Sao Paulo Medical School, University of Sao
Paulo, Sao Paulo 01246 903, Brazil
| | - Ana Paula Abreu
- Division of Endocrinology, Diabetes and Hypertension, Department of
Medicine, Brigham and Women’s Hospital, Harvard Medical School,
Boston, MA 02115, USA
| | - Delanie B Macedo
- Discipline of Endocrinology & Metabolism, Department of Internal
Medicine, University of Sao Paulo Medical School, University of Sao
Paulo, Sao Paulo 01246 903, Brazil
- Division of Endocrinology, Diabetes and Hypertension, Department of
Medicine, Brigham and Women’s Hospital, Harvard Medical School,
Boston, MA 02115, USA
- Núcleo de Atenção Médica Integrada, Centro de Ciências da Saúde,
Universidade de Fortaleza, Fortaleza 60811 905,
Brazil
| | - Berenice B Mendonca
- Discipline of Endocrinology & Metabolism, Department of Internal
Medicine, University of Sao Paulo Medical School, University of Sao
Paulo, Sao Paulo 01246 903, Brazil
| | - Ursula B Kaiser
- Division of Endocrinology, Diabetes and Hypertension, Department of
Medicine, Brigham and Women’s Hospital, Harvard Medical School,
Boston, MA 02115, USA
| | - Jesús Argente
- Hospital Infantil Universitario Niño Jesús, Department of Endocrinology and
Department of Pediatrics, Universidad Autónoma de Madrid, Spanish PUBERE Registry,
CIBER of Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III, IMDEA
Institute, Madrid 28009, Spain
| | - Ana Claudia Latronico
- Discipline of Endocrinology & Metabolism, Department of Internal
Medicine, University of Sao Paulo Medical School, University of Sao
Paulo, Sao Paulo 01246 903, Brazil
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Ragab A, Ahmed MH, Reda Sayed A, EldinAbdelbary DAK, GamalEl Din SF. Serum nesfatin-1 level in men with diabetes and erectile dysfunction correlates with generalized anxiety disorder-7: A prospective comparative study. Andrology 2023; 11:307-315. [PMID: 35871269 DOI: 10.1111/andr.13237] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 07/18/2022] [Accepted: 07/20/2022] [Indexed: 01/18/2023]
Abstract
BACKGROUND Current studies have suggested a close link between nesfatin-1, an appetite-related neuropeptide and gonadal hormones. OBJECTIVES We investigated the association between nesfatin-1 serum level and erectile dysfunction severity in men with diabetes as well as the generalized anxiety disorder-7 questionnaire, the patient health questionnaire-9, serum testosterone, kidney and liver functions, glycated haemoglobin and lipid profile. MATERIALS AND METHODS Seventy-five participants between 30 and 60 years were enrolled, 25 erectile dysfunction patients with type 2 diabetes (group I), 21 with diabetes and preserved erectile function (group II) and 29 healthy controls (group III). Erectile dysfunction status and severity were determined by the Arabic version of the international index of erectile function-5 for all the participants. Psychological wellbeing was checked by the generalized anxiety disorder-7 questionnaire and the patient health questionnaire-9. Finally, participants were evaluated for serum nesfatin-1, serum testosterone, kidney and liver functions, glycated haemoglobin and lipid profile. RESULTS Serum nesfatin-1 levels were significantly lower in groups I and II compared to the controls. The international index of erectile function-5 scores had shown significant correlations with serum nesfatin-1, serum testosterone, generalized anxiety disorder-7, patient health questionnaire-9, diastolic blood pressure, glycated haemoglobin, triglycerides, creatinine and albumin/creatinine ratio. Receiver operating characteristic analysis revealed that serum nesfatin-1 ≥ 0.62 ng/ml, serum testosterone ≥2.9 ng/ml, generalized anxiety disorder-7 score ≥7.5, patient health questionnaire-9 score ≥5, glycated hemoglobin ≥6.4%, triglycerides ≥ 144 mg/dl, creatinine ≥ 0.85 mg/dl and albumin/creatinine ratio ≥ 26.5 are useful predictors of erectile dysfunction in men with type 2 diabetes, and the area under the curve for those variables was respectively 0.83, 0.76, 1, 0.75, 0.88, 0.72, 0.67 and 0.77. Finally, a linear regression analysis revealed that generalized anxiety disorder-7 was the only strong independent predictor of the international index of erectile function-5 (p < 0.001). DISCUSSION AND CONCLUSION Nesfatin-1 can be used as a biomarker for the severity of anxiety in erectile dysfunction patients with diabetes. Use of this molecule in treatment of diabetes and erectile dysfunction should be strengthened by larger studies. Psychiatric care must be offered to patients with diabetes and erectile dysfunction and low serum nesfatin-1 as they experience intense anxiety and depression.
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Affiliation(s)
- Ahmed Ragab
- Department of Andrology, Sexology and STDs, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - Mahmoud Hassan Ahmed
- Department of Internal Medicine, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - Ahmed Reda Sayed
- Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt
| | | | - Sameh Fayek GamalEl Din
- Department of Andrology, Sexology and STDs, Kasr Al-Ainy Faculty of Medicine, Cairo University, Cairo, Egypt
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Chen L, Lu Y, Zhou YF, Wang Y, Zhan HF, Zhao YT, Wang YL, Zhang FF, Chen H, Li X. The effects of weight loss-related amenorrhea on women's health and the therapeutic approaches: a narrative review. ANNALS OF TRANSLATIONAL MEDICINE 2023; 11:132. [PMID: 36819572 PMCID: PMC9929756 DOI: 10.21037/atm-22-6366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 01/07/2023] [Indexed: 01/18/2023]
Abstract
Background and Objective Weight loss-related amenorrhea is defined as the reversible functional inhibition of the hypothalamic-pituitary-ovarian (HPO) axis associated with weight loss or low body weight, which occurs mostly in adolescents and women of reproductive age. The specific pathological mechanisms of this disease have not yet been elucidated, and the optimal evidence-based guidelines for its clinical assessment and management are limited. This review summarizes its adverse effects on female health, and the individualized, emerging, and multidisciplinary therapeutic approaches used to treat it. Methods We searched the PubMed, Web of Science, and China National Knowledge Infrastructure (CNKI) databases for Chinese and English literature on functional hypothalamic amenorrhea (FHA), and retrieved original articles (on basic and clinical research) and reviews published up to December 2022. Key Content and Findings We reviewed the findings on the unfavorable effects of weight loss-related amenorrhea with a focus on reproduction, the skeletal and cardiovascular system, other endocrine effects, and mental health. Lifestyle changes and hormonal replacement have been shown to alleviate the underlying causes and lead to the recovery of menstruation. However, the efficacy of treatments is affected by many factors, such as psychological stress and heterogeneity. Conclusions Weight loss-related amenorrhea, which is an important type of FHA, is manifested by anovulation and hypoestrogenism, and has both short- and long-term adverse effects on women's overall health. It is difficult to alleviate its underlying causes. Individualized treatments need to be optimized and emerging or multidisciplinary therapeutic approaches need to be explored that aim to recover normal menstruation and ovulation, eliminate the undesirable effects of prolonged hypoestrogenism and alleviate psychological disorders.
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Affiliation(s)
- Ling Chen
- Department of Gynecology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China;,Department of Gynecology, Hunan Provincial People’s Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, China
| | - Ye Lu
- Department of Gynecology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Yi-Fan Zhou
- Department of Gynecology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Yang Wang
- Department of Gynecology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Hai-Feng Zhan
- Department of Gynecology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China;,Department of Gynecology, Shanghai Jing’an Central Hospital of Fudan University, Shanghai, China
| | - Yu-Ting Zhao
- Department of Gynecology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Yu-Lu Wang
- Department of Gynecology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Fei-Fei Zhang
- Department of Gynecology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Hang Chen
- Department of Gynecology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Xin Li
- Department of Gynecology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
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Amer SA, Farahat M, Khamis T, Abdo SA, Younis EM, Abdel-Warith AWA, Reda R, Ali SA, Davies SJ, Ibrahim RE. Evaluation of Spray-Dried Bovine Hemoglobin Powder as a Dietary Animal Protein Source in Nile Tilapia, Oreochromis niloticus. Animals (Basel) 2022; 12:ani12223206. [PMID: 36428433 PMCID: PMC9687044 DOI: 10.3390/ani12223206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 11/04/2022] [Accepted: 11/14/2022] [Indexed: 11/22/2022] Open
Abstract
The present study evaluated the potential effects of dietary inclusion of spray-dried bovine hemoglobin powder (SDBH) on the growth, gene expression of peptide and amino acid transporters, insulin growth factor-1 (IGF-1) and myostatin, digestive enzymes activity, intestinal histomorphology and immune status, immune-related gene expression, and economic efficiency in Nile tilapia, Oreochromis niloticus. Two hundred twenty-five fingerlings (32.38 ± 0.05 g/fish) were distributed into five treatments with five dietary inclusion levels of SDBH: 0, 2.5, 5, 7.5, and 10% for a ten-week feeding period. Dietary inclusion of SDBH linearly increased the final body weight (FBW), total weight gain (TWG), specific growth rate (SGR), and protein efficiency ratio (PER). Additionally, a linear decrease in feed conversion ratio (FCR) and daily feed intake relative to the daily BW was reported in the highest inclusion levels (7.5 and 10%). Dietary inclusion of SDBH was associated with a significant increase in the intestinal villous height (VH), villous width (VW), villous height: crypt depth ratio (VH: CD), and muscle coat thickness (MCT), with the highest values reported in SDBH7.5 group. Increased serum growth hormone levels and decreased serum leptin hormone levels were also reported by increasing the SDBH level. The serum glucose level was decreased in the SDBH7.5 and SDBH10 groups. The digestive enzymes' activity (amylase and protease) was increased by increasing the SDBH inclusion level. An up-regulation in the expression of peptide and amino acid transporters, IGF-1, and down-regulation of myostatin was reported in the SDBH2.5 to SDBH7.5 groups. Spleen sections showed more lymphoid elements, especially in the SDBH2.5 and SDBH7.5 groups. The SDBH inclusion increased the serum lysozyme activity, nitric oxide (NO), and complement 3 (C3) levels, with the highest values recorded in the SDBH5 group. The phagocytic % and the phagocytic index were increased by increasing the SDBH inclusion %. The expressions of immune-related genes (transforming growth factor-beta (TGF-β), Toll-like receptor 2 (TLR2), and interleukin 10 (IL10)) were up-regulated by SDBH inclusion with the highest expression in the SDBH5 group. Economically, the feed costs and feed costs/kg gain were linearly decreased in the SDBH7.5 and SDBH10 diets. In conclusion, spray-dried bovine hemoglobin powder could be used as a protein source for up to 10% of the diets of Nile tilapia for better growth and immune status of fish.
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Affiliation(s)
- Shimaa A. Amer
- Department of Nutrition & Clinical Nutrition, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
- Correspondence: (S.A.A.); (R.E.I.)
| | - Mahmoud Farahat
- Department of Nutrition & Clinical Nutrition, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
| | - Tarek Khamis
- Department of Pharmacology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
| | - Samar A. Abdo
- Biochemistry Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
| | - Elsayed M. Younis
- Department of Zoology, College of Science, King Saudi University, Riyadh 11451, Saudi Arabia
| | | | - Rehab Reda
- Animal Wealth Development Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
| | - Sozan A. Ali
- Department of Histology and Cytology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
| | - Simon J. Davies
- School of Science and Engineering, National University of Ireland Galway, H91 TK33 Galway, Ireland
| | - Rowida E. Ibrahim
- Department of Aquatic Animal Medicine, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
- Correspondence: (S.A.A.); (R.E.I.)
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9
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Mitchell AJ, Khambadkone SG, Dunn G, Bagley J, Tamashiro KLK, Fair D, Gustafsson H, Sullivan EL. Maternal Western-style diet reduces social engagement and increases idiosyncratic behavior in Japanese macaque offspring. Brain Behav Immun 2022; 105:109-121. [PMID: 35809877 PMCID: PMC9987715 DOI: 10.1016/j.bbi.2022.07.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 06/29/2022] [Accepted: 07/03/2022] [Indexed: 01/27/2023] Open
Abstract
Recent evidence in humans and animals indicates an association between maternal obesity and offspring behavioral outcomes. In humans, increased maternal body mass index has been linked to an increased risk of children receiving a diagnosis of early-emerging neurodevelopmental disorders such as Attention Deficit/Hyperactivity Disorder (ADHD) and/or Autism Spectrum Disorder (ASD). However, a limited number of preclinical studies have examined associations between maternal Western-Style Diet (mWSD) exposure and offspring social behavior. To our knowledge, this is the first study to investigate relationships between mWSD exposure and social behavior in non-human primates. Since aberrant social behavior is a diagnostic criterion for several neurodevelopmental disorders, the current study focuses on examining the influence of maternal nutrition and metabolic state on offspring social behavior in Japanese macaques (Macaca fuscata). We found that mWSD offspring initiated less affiliative social behaviors as well as proximity to a peer. Using path analysis, we found that the association between mWSD consumption and reduced offspring social engagement was statistically mediated by increased maternal interleukin (IL)-12 during the third trimester of pregnancy. Additionally, mWSD offspring displayed increased idiosyncratic behavior, which was related to alterations in maternal adiposity and leptin in the third trimester. Together, these results suggest that NHP offspring exposed to mWSD exhibit behavioral phenotypes similar to what is described in some early-emerging neurodevelopmental disorders. These results provide evidence that mWSD exposure during gestation may be linked to increased risk of neurodevelopmental disorders and provides targets for prevention and intervention efforts.
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Affiliation(s)
- A J Mitchell
- Oregon National Primate Research Center, Division of Neuroscience, Beaverton, OR, USA; Oregon Health & Science University, Department of Behavioral Neuroscience, Portland, OR, USA
| | - Seva G Khambadkone
- Johns Hopkins University, School of Medicine, Department of Psychiatry & Behavioral Sciences, Baltimore, MD, USA
| | - Geoffrey Dunn
- University of Oregon, Department of Human Physiology, Eugene, OR, USA
| | - Jennifer Bagley
- Oregon National Primate Research Center, Division of Neuroscience, Beaverton, OR, USA
| | - Kellie L K Tamashiro
- Johns Hopkins University, School of Medicine, Department of Psychiatry & Behavioral Sciences, Baltimore, MD, USA
| | - Damien Fair
- University of Minnesota School of Medicine, Masonic Institute of Child Development, Minneapolis, MN, USA
| | - Hanna Gustafsson
- Oregon Health & Science University, Department of Psychiatry, Portland, OR, USA
| | - Elinor L Sullivan
- Oregon National Primate Research Center, Division of Neuroscience, Beaverton, OR, USA; Oregon Health & Science University, Department of Behavioral Neuroscience, Portland, OR, USA; University of Oregon, Department of Human Physiology, Eugene, OR, USA; Oregon Health & Science University, Department of Psychiatry, Portland, OR, USA.
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10
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Calanni-Pileri M, Weitzel JM, Dannenberger D, Langhammer M, Michaelis M. Lower Plasmatic Levels of Saturated Fatty Acids and a Characteristic Fatty Acid Composition in the Ovary Could Contribute to the High-Fertility Phenotype in Dummerstorf Superfertile Mice. Int J Mol Sci 2022; 23:ijms231810245. [PMID: 36142150 PMCID: PMC9499129 DOI: 10.3390/ijms231810245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/27/2022] [Accepted: 09/01/2022] [Indexed: 11/16/2022] Open
Abstract
In recent decades, fertility traits in humans as well as in farm animals have decreased worldwide. As such, it is imperative to know more about the genetics and physiology of increased or high fertility. However, most of the current animal models with reproductive phenotypes describe lower fertility or even infertility (around 99%). The “Dummerstorf high-fertility lines” (FL1 and FL2) are two unique mouse lines selected for higher reproductive performances, more specifically for higher number of pups per litter. We recently described how those superfertile mice managed to increase their reproductive phenotype by doubling the ovulation rate and consequently the litter size compared to the unselected mice of the same founder population. FLs show an unusual estrous cycle length and atypical levels of hormones that link reproduction and metabolism, such as insulin in FL1 and leptin in FL2. Moreover, we described that their higher ovulation rate is mostly due to a higher quality of their oocytes rather than their sheer quantity, as they are characterized by a higher quantity of high-quality oocytes in antral follicles, but the quantity of follicles per ovary is not dissimilar compared to the control. In the present study, we aimed to analyze the lipid composition of the fertility lines from plasma to the gonads, as they can connect the higher reproductive performances with their metabolic atypicalities. As such, we analyzed the fat content of FLs and fatty acid composition in plasma, liver, fat, oocytes of different quality, and granulosa cells. We demonstrated that those mice show higher body weight and increased body fat content, but at the same time, they manage to decrease the lipid content in the ovarian fat compared to the abdominal fat, which could contribute to explaining their ovarian quality. In addition, we illustrate the differences in fatty acid composition in those tissues, especially a lower level of saturated fatty acids in plasma and a different lipid microenvironment of the ovary. Our ongoing and future research may be informative for farm animal biology as well as human reproductive medicine, mostly with cases that present characteristics of lower fertility that could be reversed following the way-of-managing of Dummerstorf high-fertility lines.
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Affiliation(s)
- Michela Calanni-Pileri
- Institute of Reproductive Biology, Research Institute for Farm Animal Biology (FBN), FBN Dummerstorf, Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany
| | - Joachim M. Weitzel
- Institute of Reproductive Biology, Research Institute for Farm Animal Biology (FBN), FBN Dummerstorf, Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany
- Correspondence: (J.M.W.); (M.M.); Tel.: +49-38208-68763 (J.M.W.); Fax: +49-38208-68752 (J.M.W.)
| | - Dirk Dannenberger
- Institute of Muscle Biology and Growth, Research Institute for Farm Animal Biology (FBN), 18196 Dummerstorf, Germany
| | - Martina Langhammer
- Institute of Genetics and Biometry, Service Group Lab Animal Facility, Research Institute for Farm Animal Biology (FBN), 18196 Dummerstorf, Germany
| | - Marten Michaelis
- Institute of Reproductive Biology, Research Institute for Farm Animal Biology (FBN), FBN Dummerstorf, Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany
- Correspondence: (J.M.W.); (M.M.); Tel.: +49-38208-68763 (J.M.W.); Fax: +49-38208-68752 (J.M.W.)
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11
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Bo T, Liu M, Tang L, Lv J, Wen J, Wang D. Effects of High-Fat Diet During Childhood on Precocious Puberty and Gut Microbiota in Mice. Front Microbiol 2022; 13:930747. [PMID: 35910597 PMCID: PMC9329965 DOI: 10.3389/fmicb.2022.930747] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 05/27/2022] [Indexed: 12/02/2022] Open
Abstract
Precocious puberty mostly stems from endocrine disorders. However, more and more studies show that a high-fat diet (HFD) is closely related to precocious puberty, but its mechanism is unknown. Since gut microbiota is associated with hormone secretion and obesity, it inspires us to detect the mechanism of gut microbiota in triggering precocious puberty. The model of precocious puberty was established by feeding female mice with an HFD from 21 days old. After puberty, the serum hormone levels, gut microbiome sequencing, and metabolomics were collected. DNA was extracted from feces, and the V3–V4 region of the bacterial 16S rRNA gene was amplified, followed by microbial composition analysis. Subsequently, associations between precocious puberty and the microbiota were determined. We found that (1) HFD after weaning caused precocious puberty, increased serum estradiol, leptin, deoxycholic acid (DCA), and gonadotropin-releasing hormone (GnRH) in the hypothalamus; (2) Through correlation analysis, we found that GnRH was positively correlated with Desulfovibrio, Lachnoclostridium, GCA-900066575, Streptococcus, Anaerotruncus, and Bifidobacterium, suggesting that these bacteria may have a role in promoting sexual development. (3) “HFD-microbiota” transplantation promoted the precocious puberty of mice. (4) Estrogen changes the composition and proportion of gut microbiota and promotes precocious puberty. Therefore, the effect of HFD on precocious puberty is regulated by the interaction of gut microbiota and hormones.
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Affiliation(s)
- Tingbei Bo
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
| | - Min Liu
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
| | - Liqiu Tang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
| | - Jinzhen Lv
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
| | - Jing Wen
- College of Life and Environmental Science, Wenzhou University, Wenzhou, China
| | - Dehua Wang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- School of Life Sciences, Shandong University, Qingdao, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
- *Correspondence: Dehua Wang, ;
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12
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Soriano-Guillén L, Tena-Sempere M, Seraphim CE, Latronico AC, Argente J. Precocious sexual maturation: Unravelling the mechanisms of pubertal onset through clinical observations. J Neuroendocrinol 2022; 34:e12979. [PMID: 33904190 DOI: 10.1111/jne.12979] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/09/2021] [Accepted: 04/09/2021] [Indexed: 01/05/2023]
Abstract
Puberty is a crucial biological process normally occurring at a specific time during the lifespan, during which sexual and somatic maturation are completed, and reproductive capacity is reached. Pubertal timing is not only determined by genetics, but also by endogenous and environmental cues, including nutritional and metabolic signals. During the last decade, we have learned much regarding the essential roles of kisspeptins and the neuropeptide pathways that converge on these neurones to modulate kisspeptin signalling, as well as neurokinin B and dynorphin, the co-transmitters of Kiss1 neurones in the arcuate nucleus, and the effects of melanocortins on puberty. Indeed, melanocortins are involved in transmitting the regulatory actions of metabolic cues on pubertal maturation. Intracellular metabolic sensors, such as the AMP-activated protein kinase and the fuel-sensing deacetylase SIRT1, have been shown to contribute to puberty. Further understanding of these signals and regulatory circuits will help uncover the intimacies of the central control of puberty, as well as how alterations in metabolic status, ranging from undernutrition to obesity, affect the pubertal process. Precocious puberty is rare and has a clear female predominance. Central precocious puberty (CPP) is diagnosed when premature activation of the hypothalamic-pituitary axis occurs. Its causes are heterogeneous, with alterations of the central nervous system being of special interest, and with environmental factors also playing a role in some cases. During the last decade, several mutations in different genes (including KISS1, KISS1R, MKRN3 and DLK1) that cause CPP have been discovered. Loss-of-function mutations in MKRN3 are the most common monogenic cause of CPP known to date. Here, we review and update what is known regarding the genotype-phenotype relationship in patients with CPP.
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Affiliation(s)
- Leandro Soriano-Guillén
- Department of Pediatrics, Universidad Autónoma de Madrid, Madrid, Spain
- Department of Pediatrics, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain
- Instituto de Investigación Fundación Jiménez Díaz, Madrid, Spain
| | - Manuel Tena-Sempere
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Córdoba, Spain
- Department of Cell Biology, Physiology and Immunology, University of Cordoba, Córdoba, Spain
- Hospital Universitario Reina Sofía, Córdoba, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Córdoba, Spain
- Research Centre for Integrative Physiology and Pharmacology, Institute of Biomedicine and Turku Center for Disease Modeling, University of Turku, Turku, Finland
| | - Carlos E Seraphim
- Laboratory of Hormones and Molecular Genetics, LIM42, Developmental Endocrinology Unit, Department of Internal Medicine, Discipline Endocrinology and Metabolism, Faculty of Medicine, Clinicas Hospital, University of Sao Paulo, Sao Paulo, Brazil
| | - Ana C Latronico
- Laboratory of Hormones and Molecular Genetics, LIM42, Developmental Endocrinology Unit, Department of Internal Medicine, Discipline Endocrinology and Metabolism, Faculty of Medicine, Clinicas Hospital, University of Sao Paulo, Sao Paulo, Brazil
| | - Jesús Argente
- Department of Pediatrics, Universidad Autónoma de Madrid, Madrid, Spain
- Department of Pediatrics & Pediatric Endocrinology, Hospital Infantil Universitario Niño Jesús, Instituto de Investigación La Princesa, Madrid, Spain
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- IMDEA Food Institute, CEIUAM+CSIC, Madrid, Spain
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13
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Costa JADS, Cezar GA, Monteiro PLJ, Silva DMF, Araújo Silva RAJ, Bartolomeu CC, Santos Filho ASD, Wischral A, Batista AM. Leptin improves in-vitro maturation of goat oocytes through MAPK and JAK2/STAT3 pathways and affects gene expression of cumulus cells. Reprod Biol 2022; 22:100609. [PMID: 35078034 DOI: 10.1016/j.repbio.2022.100609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 01/11/2022] [Accepted: 01/15/2022] [Indexed: 12/24/2022]
Abstract
We investigated whether the recombinant leptin (1, 10, 100 ng/mL) influences the meiotic maturation of goat oocytes, whether the MAPK and JAK2/STAT3 pathways mediate the effects of leptin during in-vitro maturation, and whether leptin differently affects the abundance of mRNAs relevant to leptin signal transduction and apoptosis in oocytes and cumulus cells. The addition of leptin to the maturation medium positively affected the number of oocytes that completed nuclear maturation. Nuclear oocyte maturation stimulated by leptin was significantly impaired when we added the specific inhibitors of MAPK (U0126) and JAK2/STAT3 (AG490) to the maturation medium. The addition of leptin (10 ng/mL) during maturation did not affect the expression of AMPKα1, PPARα, Caspase 3, and BCL2 genes in oocytes or cumulus cells. The PPARγ and BAX mRNA abundances were significantly reduced in cumulus cells in the leptin group compared to the control group. Our results demonstrate that supplementation of the in-vitro maturation medium with leptin significantly improves nuclear maturation and reveal the important role of the MAPK and JAK2/STAT3 signaling pathways in establishing the leptin-mediated nuclear maturation of goat oocytes. Moreover, leptin treatment affects PPARγ and BAX gene expression in cumulus cells.
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Affiliation(s)
- Joana Amélia de Senna Costa
- Laboratório de Biotécnicas Aplicadas à Reprodução, Departamento de Medicina Veterinária, Universidade Federal Rural de Pernambuco, Recife, Pernambuco, Brazil
| | - Guilherme Arruda Cezar
- Laboratório de Biotécnicas Aplicadas à Reprodução, Departamento de Medicina Veterinária, Universidade Federal Rural de Pernambuco, Recife, Pernambuco, Brazil
| | | | - Diogo Manoel Farias Silva
- Laboratório de Biotécnicas Aplicadas à Reprodução, Departamento de Medicina Veterinária, Universidade Federal Rural de Pernambuco, Recife, Pernambuco, Brazil
| | | | - Cláudio Coutinho Bartolomeu
- Laboratório de Biotécnicas Aplicadas à Reprodução, Departamento de Medicina Veterinária, Universidade Federal Rural de Pernambuco, Recife, Pernambuco, Brazil
| | | | - Aurea Wischral
- Laboratório de Biotécnicas Aplicadas à Reprodução, Departamento de Medicina Veterinária, Universidade Federal Rural de Pernambuco, Recife, Pernambuco, Brazil
| | - André Mariano Batista
- Laboratório de Biotécnicas Aplicadas à Reprodução, Departamento de Medicina Veterinária, Universidade Federal Rural de Pernambuco, Recife, Pernambuco, Brazil.
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14
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Hu Z, Ai N, Chen W, Wong QWL, Ge W. Leptin and Its Signaling Are Not Involved in Zebrafish Puberty Onset. Biol Reprod 2022; 106:928-942. [DOI: 10.1093/biolre/ioac005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 12/29/2021] [Accepted: 01/13/2022] [Indexed: 11/14/2022] Open
Abstract
Abstract
Leptin is a peptide hormone secreted from the adipose tissues and its signaling plays a central role in metabolic regulation of growth, especially on fat mass. In addition, leptin is also involved in regulating reproduction in mammals. In teleosts, there are two leptin ligands (lepa and lepb) and one cognate leptin receptor (lepr); however, their functions are still elusive. In this study, we created null-function mutants for lepa, lepb and lepr in zebrafish using CRISPR/Cas9 method and analyzed their phenotypes with emphasis on puberty onset, one major function widely reported for leptin in mammals. We demonstrated that the loss of leptin ligands or their receptor resulted in no obesity from prepubertal stage to adulthood. We then focused on leptin involvement in controlling puberty onset. We first confirmed the somatic threshold for puberty onset in females and proposed a criterion and somatic threshold for male puberty onset. We examined gonadal development and sex maturation in different genotypic combinations including single mutants (lepa−/−, lepb−/− and lepr−/−), double mutants (lepa−/−;lepb−/−) and triple mutants (lepa−/−;lepb−/−;lepr−/−). Our results showed that once the fish reached the thresholds, the siblings of all genotypes displayed comparable gonadal development in both sexes without obvious signs of changed puberty onset. In conclusion, this comprehensive genetic study on the lep-lepr system demonstrated that in contrast to its counterpart in mammals, leptin system plays little role in controlling growth and reproduction especially puberty onset in zebrafish.
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15
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Huang Q, Hao S, You J, Yao X, Li Z, Schilling J, Thyparambil S, Liao WL, Zhou X, Mo L, Ladella S, Davies-Balch SR, Zhao H, Fan D, Whitin JC, Cohen HJ, McElhinney DB, Wong RJ, Shaw GM, Stevenson DK, Sylvester KG, Ling XB. Early-pregnancy prediction of risk for pre-eclampsia using maternal blood leptin/ceramide ratio: discovery and confirmation. BMJ Open 2021; 11:e050963. [PMID: 34824115 PMCID: PMC8627403 DOI: 10.1136/bmjopen-2021-050963] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE This study aimed to develop a blood test for the prediction of pre-eclampsia (PE) early in gestation. We hypothesised that the longitudinal measurements of circulating adipokines and sphingolipids in maternal serum over the course of pregnancy could identify novel prognostic biomarkers that are predictive of impending event of PE early in gestation. STUDY DESIGN Retrospective discovery and longitudinal confirmation. SETTING Maternity units from two US hospitals. PARTICIPANTS Six previously published studies of placental tissue (78 PE and 95 non-PE) were compiled for genomic discovery, maternal sera from 15 women (7 non-PE and 8 PE) enrolled at ProMedDx were used for sphingolipidomic discovery, and maternal sera from 40 women (20 non-PE and 20 PE) enrolled at Stanford University were used for longitudinal observation. OUTCOME MEASURES Biomarker candidates from discovery were longitudinally confirmed and compared in parallel to the ratio of placental growth factor (PlGF) and soluble fms-like tyrosine kinase (sFlt-1) using the same cohort. The datasets were generated by enzyme-linked immunosorbent and liquid chromatography-tandem mass spectrometric assays. RESULTS Our discovery integrating genomic and sphingolipidomic analysis identified leptin (Lep) and ceramide (Cer) (d18:1/25:0) as novel biomarkers for early gestational assessment of PE. Our longitudinal observation revealed a marked elevation of Lep/Cer (d18:1/25:0) ratio in maternal serum at a median of 23 weeks' gestation among women with impending PE as compared with women with uncomplicated pregnancy. The Lep/Cer (d18:1/25:0) ratio significantly outperformed the established sFlt-1/PlGF ratio in predicting impending event of PE with superior sensitivity (85% vs 20%) and area under curve (0.92 vs 0.52) from 5 to 25 weeks of gestation. CONCLUSIONS Our study demonstrated the longitudinal measurement of maternal Lep/Cer (d18:1/25:0) ratio allows the non-invasive assessment of PE to identify pregnancy at high risk in early gestation, outperforming the established sFlt-1/PlGF ratio test.
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Affiliation(s)
| | - Shiying Hao
- Department of Cardiothoracic Surgery, Stanford University, Stanford, California, USA
- Clinical and Translational Research Program, Betty Irene Moore Children's Heart Center, Lucile Packard Children's Hospital, Palo Alto, California, USA
| | - Jin You
- Department of Bioengineering, University of California Riverside, Riverside, California, USA
| | | | - Zhen Li
- Department of Surgery, Stanford University, Stanford, California, USA
- Binhai Industrial Technology Research Institute, Zhejiang University, Tianjin, China
- School of Electrical Engineering, Southeast University, Nanjing, China
| | | | | | | | - Xin Zhou
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Pingjin Hospital Heart Center, Tianjin, China
| | - Lihong Mo
- Department of Obstetrics and Gynecology, University of California San Francisco, Fresno, California, USA
| | - Subhashini Ladella
- Department of Obstetrics and Gynecology, University of California San Francisco, Fresno, California, USA
| | | | - Hangyi Zhao
- Department of Mathematics, Stanford University, Stanford, California, USA
| | - David Fan
- Department of Statistics and Applied Probability, University of California Santa Barbara, Santa Barbara, California, USA
| | - John C Whitin
- Department of Pediatrics, Stanford University, Stanford, California, USA
| | - Harvey J Cohen
- Department of Pediatrics, Stanford University, Stanford, California, USA
| | - Doff B McElhinney
- Department of Cardiothoracic Surgery, Stanford University, Stanford, California, USA
- Clinical and Translational Research Program, Betty Irene Moore Children's Heart Center, Lucile Packard Children's Hospital, Palo Alto, California, USA
| | - Ronald J Wong
- Department of Pediatrics, Stanford University, Stanford, California, USA
| | - Gary M Shaw
- Department of Pediatrics, Stanford University, Stanford, California, USA
| | - David K Stevenson
- Department of Pediatrics, Stanford University, Stanford, California, USA
| | - Karl G Sylvester
- Department of Surgery, Stanford University, Stanford, California, USA
| | - Xuefeng B Ling
- Department of Surgery, Stanford University, Stanford, California, USA
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16
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Bo T, Wen J, Gao W, Tang L, Liu M, Wang D. Influence of HFD-induced precocious puberty on neurodevelopment in mice. Nutr Metab (Lond) 2021; 18:86. [PMID: 34530850 PMCID: PMC8447761 DOI: 10.1186/s12986-021-00604-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 07/29/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Precocious puberty is frequently associated with obesity, which will lead to long-term effects, especially on growth and reproduction. However, the effect of precocious puberty on children's neurodevelopment is still unknown. OBJECTIVES Here we evaluated the effect of High fat diet (HFD)-induced precocious puberty on neurodevelopment and behaviors of animals. METHODS Ovaries sections were stained with hematoxylin-eosin (H&E) using standard techniques. Behavioral tests included elevated plus maze (EPM), open field exploration, Y-Maze, marble burying test, and novelty- suppressed feeding. The expression of genes related to puberty and neural development was detected by immunohistochemistry and Western blot. RESULTS Our results showed HFD-induced precocious puberty increased the risk-taking behavior and decreased memory of mice. The content of Tyrosine hydroxylase (TH) and Arginine vasopressin (AVP) in hypothalamus were higher in HFD group than control group. Although the recovery of normal diet will gradually restore the body fat and other physiological index of mice, the anxiety increases in adult mice, and the memory is also damaged. CONCLUSIONS These findings describe the sensitivity of mice brain to HFD-induced precocious puberty and the irrecoverability of neural damage caused by precocious puberty. Therefore, avoiding HFD in childhood is important to prevent precocious puberty and neurodevelopmental impairment in mice.
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Affiliation(s)
- Tingbei Bo
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jing Wen
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Wenting Gao
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Liqiu Tang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Min Liu
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Dehua Wang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China. .,School of Life Science, Shandong University, Qingdao, 266237, China. .,CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, 100049, China.
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17
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Prashar V, Arora T, Singh R, Sharma A, Parkash J. Interplay of KNDy and nNOS neurons: A new possible mechanism of GnRH secretion in the adult brain. Reprod Biol 2021; 21:100558. [PMID: 34509713 DOI: 10.1016/j.repbio.2021.100558] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 08/25/2021] [Accepted: 08/28/2021] [Indexed: 02/07/2023]
Abstract
Reproduction in mammals is favoured when there is sufficient energy available to permit the survival of offspring. Neuronal nitric oxide synthase expressing neurons produce nitric oxide in the proximity of the gonadotropin-releasing hormone neurons in the preoptic region. nNOS neurons are an integral part of the neuronal network controlling ovarian cyclicity and ovulation. Nitric oxide can directly regulate the activity of the GnRH neurons and play a vital role neuroendocrine axis. Kisspeptin neurons are essential for the GnRH pulse and surge generation. The anteroventral periventricular nucleus (AVPV), kisspeptin neurons are essential for GnRH surge generation. KNDy neurons are present in the hypothalamus's arcuate nucleus (ARC), co-express NKB and dynorphin, essential for GnRH pulse generation. Kisspeptin-neurokinin B-dynorphin (KNDy) neuroendocrine molecules of the hypothalamus are key components in the central control of GnRH secretion. The hypothalamic neurons kisspeptin, KNDy, nitric oxide synthase (NOS), and other mediators such as leptin, adiponectin, and ghrelin, play an active role in attaining puberty. Kisspeptin signalling is mediated by NOS, which further results in the secretion of GnRH. Neuronal nitric oxide is critical for attaining puberty, but its direct role in adult GnRH secretion is poorly understood. This review mainly focuses on the role of nNOS and its interplay with KNDy neurons in the hormonal regulation of reproduction.
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Affiliation(s)
- Vikash Prashar
- Department of Zoology, School of Basic and Applied Sciences, Central University Punjab, Ghudda, Bathinda, 151401, Punjab, India
| | - Tania Arora
- Department of Zoology, School of Basic and Applied Sciences, Central University Punjab, Ghudda, Bathinda, 151401, Punjab, India
| | - Randeep Singh
- Department of Zoology, School of Basic and Applied Sciences, Central University Punjab, Ghudda, Bathinda, 151401, Punjab, India
| | - Arti Sharma
- Department of Computational Biology, School of Basic and Applied Sciences, Central University Punjab, Ghudda, Bathinda, 151401, Punjab, India
| | - Jyoti Parkash
- Department of Zoology, School of Basic and Applied Sciences, Central University Punjab, Ghudda, Bathinda, 151401, Punjab, India.
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Howard AC, Mir D, Snow S, Horrocks J, Sayed H, Ma Z, Rogers AN. Anabolic Function Downstream of TOR Controls Trade-offs Between Longevity and Reproduction at the Level of Specific Tissues in C. elegans. FRONTIERS IN AGING 2021; 2:725068. [PMID: 35340273 PMCID: PMC8953723 DOI: 10.3389/fragi.2021.725068] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 08/27/2021] [Indexed: 11/20/2022]
Abstract
As the most energetically expensive cellular process, translation must be finely tuned to environmental conditions. Dietary restriction attenuates signaling through the nutrient sensing mTOR pathway, which reduces translation and redirects resources to preserve the soma. These responses are associated with increased lifespan but also anabolic impairment, phenotypes also observed when translation is genetically suppressed. Here, we restricted translation downstream of mTOR separately in major tissues in C. elegans to better understand their roles in systemic adaptation and whether consequences to anabolic impairment were separable from positive effects on lifespan. Lowering translation in neurons, hypodermis, or germline tissue led to increased lifespan under well-fed conditions and improved survival upon withdrawal of food, indicating that these are key tissues coordinating enhanced survival when protein synthesis is reduced. Surprisingly, lowering translation in body muscle during development shortened lifespan while accelerating and increasing reproduction, a reversal of phenotypic trade-offs associated with systemic translation suppression. Suppressing mTORC1 selectively in body muscle also increased reproduction while slowing motility during development. In nature, this may be indicative of reduced energy expenditure related to foraging, acting as a "GO!" signal for reproduction. Together, results indicate that low translation in different tissues helps direct distinct systemic adaptations and suggest that unknown endocrine signals mediate these responses. Furthermore, mTOR or translation inhibitory therapeutics that target specific tissues may achieve desired interventions to aging without loss of whole-body anabolism.
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Affiliation(s)
- Amber C. Howard
- Mount Desert Island Biological Laboratory, Davis Center for Regenerative Biology and Medicine, Bar Harbor, ME, United States
- Department of Natural Sciences, Middle Georgia State University, Cochran, GA, United States
| | - Dilawar Mir
- Mount Desert Island Biological Laboratory, Davis Center for Regenerative Biology and Medicine, Bar Harbor, ME, United States
| | - Santina Snow
- Mount Desert Island Biological Laboratory, Davis Center for Regenerative Biology and Medicine, Bar Harbor, ME, United States
- Department of Oncology, School of Medicine and Public Health, University of Wisconsin, Madison, WI, United States
| | - Jordan Horrocks
- Mount Desert Island Biological Laboratory, Davis Center for Regenerative Biology and Medicine, Bar Harbor, ME, United States
| | - Hussein Sayed
- Mount Desert Island Biological Laboratory, Davis Center for Regenerative Biology and Medicine, Bar Harbor, ME, United States
| | - Zhengxin Ma
- Mount Desert Island Biological Laboratory, Davis Center for Regenerative Biology and Medicine, Bar Harbor, ME, United States
| | - Aric N. Rogers
- Mount Desert Island Biological Laboratory, Davis Center for Regenerative Biology and Medicine, Bar Harbor, ME, United States
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19
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Bakshi A, Rai U. Seasonality, sex-specificity and transcriptional regulation of hepatic leptin system in spotted snakehead Channa punctata. Gen Comp Endocrinol 2021; 310:113821. [PMID: 34015346 DOI: 10.1016/j.ygcen.2021.113821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 05/13/2021] [Accepted: 05/13/2021] [Indexed: 01/02/2023]
Abstract
The present study deals with sex-specific reproductive phase-dependent variation and sex steroids-induced transcriptional regulation of hepatic lep and lepr in nutritionally valuable spotted snakehead, Channa punctata. The data on seasonality reveals sex-specific variation in pattern of lep transcription where a high level was recorded during resting and postspawning quiescent phases in female while during resting and spawning phases in male. Unlike lep, lepr exhibited similar expression pattern along the reproductive phases in both the sexes. As compared to female, a three-fold higher expression of lep was detected in male during reproductively active phase only. However, no sexual dimorphism was evidenced in lepr either during active or quiescent phase. To explore the implication of sex steroids in regulation of leptin system, we correlated levels of plasma testosterone (T) and 17β-estradiol (E2) with leptin system in males as well as females. Further, criss-cross in vivo and in vitro experiments with dihydrotestosterone (DHT) and E2 were conducted in male and female spotted snakehead. The leptin system was downregulated after DHT administration in both the sexes. However, with E2, a marked decrease was evidenced in male only. The sex-wise variable response of leptin system to sex steroids was validated by in vitro experiments wherein liver fragments from male and female fish were incubated individually with both the sex steroids. In conclusion, sex steroids modulate hepatic leptin system differentially depending on sex and reproductive state of spotted snakehead.
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Affiliation(s)
- Amrita Bakshi
- Department of Zoology, University of Delhi, Delhi 110007, India
| | - Umesh Rai
- Department of Zoology, University of Delhi, Delhi 110007, India.
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20
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Bakshi A, Singh R, Rai U. Trajectory of leptin and leptin receptor in vertebrates: Structure, function and their regulation. Comp Biochem Physiol B Biochem Mol Biol 2021; 257:110652. [PMID: 34343670 DOI: 10.1016/j.cbpb.2021.110652] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 06/23/2021] [Accepted: 07/29/2021] [Indexed: 12/11/2022]
Abstract
The present review provides a comparative insight into structure, function and control of leptin system in fishes, herptiles, birds and mammals. In general, leptin acts as an anorexigenic hormone since its administration results in decrease of food intake in vertebrates. Nonetheless, functional paradox arises in fishes from contradictory observations on level of leptin during fasting and re-feeding. In addition, leptin is shown to modulate metabolic functions in fishes, reptiles, birds and mammals. Leptin also regulates reproductive and immune functions though more studies are warranted in non-mammalian vertebrates. The expression of leptin and its receptor is influenced by numerous factors including sex steroids, stress and stress-induced catecholamines and glucocorticoids though their effect in non-mammalian vertebrates is hard to be generalized due to limited studies.
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Affiliation(s)
- Amrita Bakshi
- Department of Zoology, University of Delhi, Delhi 110007, India
| | - Rajeev Singh
- Satyawati College, University of Delhi, Delhi 110052, India
| | - Umesh Rai
- Department of Zoology, University of Delhi, Delhi 110007, India.
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21
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Salem AM. Variation of Leptin During Menstrual Cycle and Its Relation to the Hypothalamic-Pituitary-Gonadal (HPG) Axis: A Systematic Review. Int J Womens Health 2021; 13:445-458. [PMID: 34007218 PMCID: PMC8121381 DOI: 10.2147/ijwh.s309299] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 04/19/2021] [Indexed: 12/23/2022] Open
Abstract
Recently, adipose tissue has been identified as endocrine organ in addition to its action as energy store; it produces a large number of biologically active mediators known as adipocytokines. Significantly, adipocytokines were found to be involved in the physiology of many body functions, including reproduction. The role of body weight, body fat compositions, and nutrition has been largely investigated using animal models and human studies. Malnutrition and/or abnormal body weight may induce disturbances in fertility, puberty, pregnancy, and menstrual cycles. Leptin was the first discovered adipocytokine, and a large body of data over the last 25 years has shown that leptin is not only a molecule that reflects energy stores in the body, but is also an important cytokine involved in many physiological functions, such as inflammatory response, insulin sensitivity, bone metabolism, immunity, and most importantly, reproductive function. Leptin controls the normal physiology of the female reproductive system; it interacts with the hypothalamic–pituitary–gonadal (HPG) axis by a complex mechanism that connects energy homeostasis with reproduction. However, observational studies have demonstrated inconsistent results about leptin variation during normal menstrual cycle, and the mechanisms involved in the interplay between leptin and the hormones of the HPG axis are largely unknown. This review focuses on leptin variation during normal menstrual cycles and its relation to the hypothalamic–pituitary–gonadal axis, and the effect of overweight/obesity on leptin during menstrual cycle is further reviewed.
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Affiliation(s)
- Ayad Mohammed Salem
- Department of Physiology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
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22
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Li Y, Yu C, Deng W. Roles and mechanisms of adipokines in drug resistance of tumor cells. Eur J Pharmacol 2021; 899:174019. [PMID: 33722588 DOI: 10.1016/j.ejphar.2021.174019] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 02/06/2021] [Accepted: 03/10/2021] [Indexed: 02/06/2023]
Abstract
The drug resistance of cancer cells has become one of the biggest obstacles of effective anticancer treatments. Adipocytes produce plenty of cytokines (also known as adipokines), which remarkably affect the drug resistance exhibited by cancer cells. Different adipokines (leptin, visfatin, resistin, adiponectin, Interleukin 6, and tumor necrosis factor α) can induce drug resistance in different cancer cells by various functional mechanisms. This phenomenon is of great interest in pharmacological anti-cancer studies since it indicates that in the cancers with adipocyte-rich microenvironment, all adipokines join together to assist cancer cells to survive by facilitating drug resistance. Studies on adipokines contribute to the development of novel pharmacological strategies for cancer therapy if their roles and molecular targets are better understood. The review will elucidate the roles and the underlying mechanisms of adipokines in drug resistance, which may be of great significance for revealing new strategies for cancer treatment.
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Affiliation(s)
- Yan Li
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Diseases and Microenvironment of Ministry of Education of China, Tianjin Medical University, Tianjin, China
| | - Chunyan Yu
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Diseases and Microenvironment of Ministry of Education of China, Tianjin Medical University, Tianjin, China
| | - Weimin Deng
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Diseases and Microenvironment of Ministry of Education of China, Tianjin Medical University, Tianjin, China.
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23
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Alshaheen TA, Awaad MHH, Mehaisen GMK. Leptin improves the in vitro development of preimplantation rabbit embryos under oxidative stress of cryopreservation. PLoS One 2021; 16:e0246307. [PMID: 33529203 PMCID: PMC7853501 DOI: 10.1371/journal.pone.0246307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Accepted: 01/17/2021] [Indexed: 11/26/2022] Open
Abstract
Vitrification is an economically effective method for embryo cryopreservation in human and livestock animals; however, it carries the risk of damage by the exposure to severe oxidative stress. The present study was conducted to evaluate the effect of leptin at different levels on the in vitro development of fresh and vitrified preimplantation embryos in a rabbit model. Normal embryos at morulae stage were randomly cultured for 2 h with 0, 10, 20 or 100 ng/mL of leptin, then were cultured for further 48 h as freshly or after vitrification. Thereafter, developed blastocysts form the best leptin level in fresh and vitrified embryos along with their controls were allocated to analyze the pro-oxidant (malondialdehyde, MDA; nitric oxide, NO), antioxidant (total antioxidant capacity, TAC; superoxide dismutase, SOD; glutathione peroxidase, GPx), apoptotic (Bcl-2 associated X protein, BAX; heat shock 60kD protein member 1, HSP60; tumor necrosis factor alpha, TNFα) and developmental (sex determining region Y box protein 2, SOX2; Nanog homeobox protein, NANOG; Octamer-binding protein 4, OCT4) biomarkers. Results indicate that expanding and hatching rates of embryos were significantly higher at 20 ng/mL leptin than the other levels, while vitrification had an independent suppression effect on the in vitro development rates. The MDA and NO were significantly higher, while TAC, SOD and GPx were significantly lower in the vitrified than fresh embryos. In contrast, leptin treatment significantly decreased the pro-oxidant biomarkers and increased the antioxidant biomarkers in both fresh and vitrified embryos. Vitrification significantly increased the antiapoptotic biomarkers, and decreased the developmental biomarkers in embryos. In contrast, leptin decreased the BAX and TNFα, increased the HSP60, and moreover, ameliorated the reduction of developmental biomarkers in the vitrified embryos. These results conclude that leptin could be used as antiapoptotic and antioxidant promotor to support the in vitro embryonic development, particularly under oxidative stress emerged from cryopreservation programs.
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Affiliation(s)
- Tarek A. Alshaheen
- Department of Animal and Fish Production, College of Agricultural and Food Sciences, King Faisal University, Al-Ahsa, Saudi Arabia
| | - Mohamed H. H. Awaad
- Department of Poultry Diseases, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Gamal M. K. Mehaisen
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt
- * E-mail:
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24
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Central Ceramide Signaling Mediates Obesity-Induced Precocious Puberty. Cell Metab 2020; 32:951-966.e8. [PMID: 33080217 DOI: 10.1016/j.cmet.2020.10.001] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 07/30/2020] [Accepted: 09/30/2020] [Indexed: 12/17/2022]
Abstract
Childhood obesity, especially in girls, is frequently bound to earlier puberty, which is linked to higher disease burden later in life. The mechanisms underlying this association remain elusive. Here we show that brain ceramides participate in the control of female puberty and contribute to its alteration in early-onset obesity in rats. Postnatal overweight caused earlier puberty and increased hypothalamic ceramide content, while pharmacological activation of ceramide synthesis mimicked the pubertal advancement caused by obesity, specifically in females. Conversely, central blockade of de novo ceramide synthesis delayed puberty and prevented the effects of the puberty-activating signal, kisspeptin. This phenomenon seemingly involves a circuit encompassing the paraventricular nucleus (PVN) and ovarian sympathetic innervation. Early-onset obesity enhanced PVN expression of SPTLC1, a key enzyme for ceramide synthesis, and advanced the maturation of the ovarian noradrenergic system. In turn, obesity-induced pubertal precocity was reversed by virogenetic suppression of SPTLC1 in the PVN. Our data unveil a pathway, linking kisspeptin, PVN ceramides, and sympathetic ovarian innervation, as key for obesity-induced pubertal precocity.
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25
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Jafarpour S, Khosravi S, Janghorbani M, Mansourian M, Karimi R, Ghiasi MR, Miraghajani M, Symonds ME, Farajzadeghan Z, Salehi R. Association of serum and follicular fluid leptin and in vitro Fertilization/ ICSI outcome: A systematic review and meta-analysis. J Gynecol Obstet Hum Reprod 2020; 50:101924. [PMID: 33007525 DOI: 10.1016/j.jogoh.2020.101924] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 09/09/2020] [Accepted: 09/23/2020] [Indexed: 10/23/2022]
Abstract
There are conflicting reports regarding circulating leptin and its relationship between pregnancy outcomes in infertile women undergoing in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI). We performed a systematic review and meta-analysis to assess the association between serum or follicular fluid (FF) leptin concentrations reported for infertile women and their IVF outcome. A systematic search was undertaken in available databases (PubMed, Scopus, Web of Science, The Cochrane Library and Embase) to find studies published up to Aug 2020 and the standardized mean difference with 95 % confidence interval was taken from 14 eligible studies. Both graphical (funnel plots) and test methods (Egger's regression test and the Begg) assessed the presence of publication bias. Subgroup analysis was used to investigate the source of heterogeneity. Pooled effect sizes based on the eligible papers indicated that of there is no statistically significant correlation between leptin levels in follicular fluid and serum on the day of ovum pick-up (OPU) and day of HCG (human chorionic gonadotrophin) administration in pregnant and non-pregnant women who underwent IVF/ICSI cycles. However, combination of leptin in serum and/or FF with other parameters may be a useful marker to predict IVF outcome.
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Affiliation(s)
- Sima Jafarpour
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran; Pediatric Inherited Diseases Research Center, Research Institute for Primordial Prevention of Non-Communicable Diseases Isfahan University of Medical Sciences, Isfahan, Iran
| | - Sharifeh Khosravi
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran; Pediatric Inherited Diseases Research Center, Research Institute for Primordial Prevention of Non-Communicable Diseases Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohsen Janghorbani
- Department of Epidemiology and Biostatistics, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Marjan Mansourian
- Department of Epidemiology and Biostatistics, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Raheleh Karimi
- Department of Epidemiology and Biostatistics, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Moosa Rahimi Ghiasi
- Laboratory of Basic Sciences, Mohammad Rasul Allah Research Tower, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Maryam Miraghajani
- Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; The Early Life Research Unit, Academic Division of Child Health, Obstetrics and Gynaecology, and Nottingham Digestive Disease Centre and Biomedical Research Centre, The School of Medicine, University of Nottingham, Nottingham, NG7 2UH, UK
| | - Michael E Symonds
- The Early Life Research Unit, Academic Division of Child Health, Obstetrics and Gynaecology, and Nottingham Digestive Disease Centre and Biomedical Research Centre, The School of Medicine, University of Nottingham, Nottingham, NG7 2UH, UK
| | - Ziba Farajzadeghan
- Department of Community Medicine, Faculty Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Rasoul Salehi
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran; Pediatric Inherited Diseases Research Center, Research Institute for Primordial Prevention of Non-Communicable Diseases Isfahan University of Medical Sciences, Isfahan, Iran.
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26
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Sun W, Bi LK, Xie DD, Yu DX. Serum nesfatin-1 is associated with testosterone and the severity of erectile dysfunction. Andrologia 2020; 52:e13634. [PMID: 32427366 DOI: 10.1111/and.13634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 03/25/2020] [Accepted: 04/14/2020] [Indexed: 11/27/2022] Open
Abstract
This cross-sectional study aimed to evaluate serum nesfatin-1 concentrations in patients with erectile dysfunction (ED). Patients with ED were selected from the Department of Urology of the Second Affiliated Hospital of Anhui Medical University. The International Index of Erectile Function-5 (IIEF-5) was used to evaluate the severity of ED. Serum nesfatin-1 and gonadal hormone levels, including luteinising hormone (LH), follicle-stimulating hormone (FSH) and testosterone were measured. The IIEF-5 scores (t = -21.034, p < .001) and nesfatin-1 levels (t = -7.043, p < .001) in patients with ED were significantly lower than in healthy controls. Moreover, patients with ED showed decreased testosterone levels (t = -3.478, p = .001), whereas there were no significant differences in serum levels of FSH (t = -0.088, p = .930) and LH (t = 1.114, p = .270) between the two groups. Furthermore, positive relationships were found between serum nesfatin-1 and testosterone concentrations (r = .742, p = .001) and IIEF-5 scores (r = .395, p = .009) in ED patients. Additionally, based on receiver operating characteristic curve analysis, the area under curve for nesfatin-1 was 0.884 with 83.3% sensitivity and 81.4% specificity in discriminating ED patients from healthy controls. The decrease in serum nesfatin-1 level may be related to testosterone and the severity of ED.
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Affiliation(s)
- Wei Sun
- Department of Urology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Liang-Kuan Bi
- Department of Urology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Dong-Dong Xie
- Department of Urology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - De-Xin Yu
- Department of Urology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
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27
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Mannelli M, Gamberi T, Magherini F, Fiaschi T. The Adipokines in Cancer Cachexia. Int J Mol Sci 2020; 21:ijms21144860. [PMID: 32660156 PMCID: PMC7402301 DOI: 10.3390/ijms21144860] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/01/2020] [Accepted: 07/07/2020] [Indexed: 12/19/2022] Open
Abstract
Cachexia is a devastating pathology induced by several kinds of diseases, including cancer. The hallmark of cancer cachexia is an extended weight loss mainly due to skeletal muscle wasting and fat storage depletion from adipose tissue. The latter exerts key functions for the health of the whole organism, also through the secretion of several adipokines. These hormones induce a plethora of effects in target tissues, ranging from metabolic to differentiating ones. Conversely, the decrease of the circulating level of several adipokines positively correlates with insulin resistance, metabolic syndrome, diabetes, and cardiovascular disease. A lot of findings suggest that cancer cachexia is associated with changed secretion of adipokines by adipose tissue. In agreement, cachectic patients show often altered circulating levels of adipokines. This review reported the findings of adipokines (leptin, adiponectin, resistin, apelin, and visfatin) in cancer cachexia, highlighting that to study in-depth the involvement of these hormones in this pathology could lead to the development of new therapeutic strategies.
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Seoane-Collazo P, Martínez-Sánchez N, Milbank E, Contreras C. Incendiary Leptin. Nutrients 2020; 12:nu12020472. [PMID: 32069871 PMCID: PMC7071158 DOI: 10.3390/nu12020472] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 02/06/2020] [Accepted: 02/08/2020] [Indexed: 02/08/2023] Open
Abstract
Leptin is a hormone released by adipose tissue that plays a key role in the control of energy homeostasis through its binding to leptin receptors (LepR), mainly expressed in the hypothalamus. Most scientific evidence points to leptin’s satiating effect being due to its dual capacity to promote the expression of anorexigenic neuropeptides and to reduce orexigenic expression in the hypothalamus. However, it has also been demonstrated that leptin can stimulate (i) thermogenesis in brown adipose tissue (BAT) and (ii) the browning of white adipose tissue (WAT). Since the demonstration of the importance of BAT in humans 10 years ago, its study has aroused great interest, mainly in the improvement of obesity-associated metabolic disorders through the induction of thermogenesis. Consequently, several strategies targeting BAT activation (mainly in rodent models) have demonstrated great potential to improve hyperlipidemias, hepatic steatosis, insulin resistance and weight gain, leading to an overall healthier metabolic profile. Here, we review the potential therapeutic ability of leptin to correct obesity and other metabolic disorders, not only through its satiating effect, but by also utilizing its thermogenic properties.
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Affiliation(s)
- Patricia Seoane-Collazo
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
- CIMUS, University of Santiago de Compostela-Instituto de Investigación Sanitaria, 15782 Santiago de Compostela, Spain;
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706 Santiago de Compostela, Spain
- Correspondence: (P.S.-C.); (N.M.-S.); (C.C.); Tel.: +81-298-533-301 (P.S.-C.); +34-913-941-650 (N.M.-S.); +44-01865285890 (C.C.)
| | - Noelia Martínez-Sánchez
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3PT, UK
- Correspondence: (P.S.-C.); (N.M.-S.); (C.C.); Tel.: +81-298-533-301 (P.S.-C.); +34-913-941-650 (N.M.-S.); +44-01865285890 (C.C.)
| | - Edward Milbank
- CIMUS, University of Santiago de Compostela-Instituto de Investigación Sanitaria, 15782 Santiago de Compostela, Spain;
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706 Santiago de Compostela, Spain
| | - Cristina Contreras
- Department of Physiology, Pharmacy School, Complutense University of Madrid, 28040 Madrid, Spain
- Correspondence: (P.S.-C.); (N.M.-S.); (C.C.); Tel.: +81-298-533-301 (P.S.-C.); +34-913-941-650 (N.M.-S.); +44-01865285890 (C.C.)
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29
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Bakshi A, Rai U. Reproductive phase-dependent variation, sexually dimorphic expression and sex steroids-mediated transcriptional regulation of lep and lepr in lymphoid organs of Channa punctata. Sci Rep 2020; 10:999. [PMID: 31969648 PMCID: PMC6976713 DOI: 10.1038/s41598-020-57922-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 12/07/2019] [Indexed: 01/08/2023] Open
Abstract
The reproductive phase-dependent and sex-related differential expression of leptin (lep) and its receptor (lepr) in primary and secondary lymphoid organs of a highly nutritive economically important Channa punctata preempts the involvement of sex steroids in modulating intra-immuno-leptin system. This hypothesis was strengthened when plasma testosterone (T) and estradiol (E2) levels in male and female fish of reproductively active spawning and quiescent phases were correlated with lep and lepr expression in their immune organs. Splenic lep and lepr showed a negative correlation with T in both male and female, while with E2 there was a positive correlation in male and negative in female C. punctata. In head kidney, a contrasting correlation was observed as compared to spleen. To validate the implication of sex steroids in regulating leptin system in immune organs, in vivo and in vitro experiments were performed with DHT and E2. Upon administration, lep and lepr expression in tissues of either sex was downregulated. In addition, in vitro results with either of the sex steroids exemplified their direct involvement. Overall, this study, for the first time, reports correlation between sex steroids and transcript expression of leptin system in immune organs of a seasonally breeding vertebrate.
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Affiliation(s)
- Amrita Bakshi
- Department of Zoology, University of Delhi, Delhi, 110007, India
| | - Umesh Rai
- Department of Zoology, University of Delhi, Delhi, 110007, India.
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Lee E, Miedzybrodzka EL, Zhang X, Hatano R, Miyamoto J, Kimura I, Fujimoto K, Uematsu S, Rodriguez-Cuenca S, Vidal-Puig A, Gribble FM, Reimann F, Miki T. Diet-Induced Obese Mice and Leptin-Deficient Lepob/ob Mice Exhibit Increased Circulating GIP Levels Produced by Different Mechanisms. Int J Mol Sci 2019; 20:ijms20184448. [PMID: 31509948 PMCID: PMC6769670 DOI: 10.3390/ijms20184448] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 09/06/2019] [Accepted: 09/07/2019] [Indexed: 12/23/2022] Open
Abstract
As glucose-dependent insulinotropic polypeptide (GIP) possesses pro-adipogenic action, the suppression of the GIP hypersecretion seen in obesity might represent a novel therapeutic approach to the treatment of obesity. However, the mechanism of GIP hypersecretion remains largely unknown. In the present study, we investigated GIP secretion in two mouse models of obesity: High-fat diet-induced obese (DIO) mice and leptin-deficient Lepob/ob mice. In DIO mice, plasma GIP was increased along with an increase in GIP mRNA expression in the lower small intestine. Despite the robust alteration in the gut microbiome in DIO mice, co-administration of maltose and the α-glucosidase inhibitor (α-GI) miglitol induced the microbiome-mediated suppression of GIP secretion. The plasma GIP levels of Lepob/ob mice were also elevated and were suppressed by fat transplantation. The GIP mRNA expression in fat tissue was not increased in Lepob/ob mice, while the expression of an interleukin-1 receptor antagonist (IL-1Ra) was increased. Fat transplantation suppressed the expression of IL-1Ra. The plasma IL-1Ra levels were positively correlated with the plasma GIP levels. Accordingly, although circulating GIP levels are increased in both DIO and Lepob/ob mice, the underlying mechanisms differ, and the anti-obesity actions of α-GIs and leptin sensitizers may be mediated partly by the suppression of GIP secretion.
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Affiliation(s)
- Eunyoung Lee
- Department of Medical Physiology, Chiba University, Graduate School of Medicine, Chiba 260-8670, Japan.
- Metabolic Research Laboratories, Wellcome Trust MRC Institute of Metabolic Science, University of Cambridge, Addenbrooke's Hospital, Cambridge CB2 0QQ, UK.
| | - Emily L Miedzybrodzka
- Metabolic Research Laboratories, Wellcome Trust MRC Institute of Metabolic Science, University of Cambridge, Addenbrooke's Hospital, Cambridge CB2 0QQ, UK.
| | - Xilin Zhang
- Department of Medical Physiology, Chiba University, Graduate School of Medicine, Chiba 260-8670, Japan.
| | - Ryo Hatano
- Department of Medical Physiology, Chiba University, Graduate School of Medicine, Chiba 260-8670, Japan.
| | - Junki Miyamoto
- Department of Applied Biological Science, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Fuchu 183-8509, Japan.
| | - Ikuo Kimura
- Department of Applied Biological Science, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Fuchu 183-8509, Japan.
| | - Kosuke Fujimoto
- Department of Immunology and Genomics, Osaka City University School of Medicine, Osaka 545-8585, Japan.
- Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Minato-ku 108-8639, Japan.
| | - Satoshi Uematsu
- Department of Immunology and Genomics, Osaka City University School of Medicine, Osaka 545-8585, Japan.
- Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Minato-ku 108-8639, Japan.
| | - Sergio Rodriguez-Cuenca
- Metabolic Research Laboratories, Wellcome Trust MRC Institute of Metabolic Science, University of Cambridge, Addenbrooke's Hospital, Cambridge CB2 0QQ, UK.
| | - Antonio Vidal-Puig
- Metabolic Research Laboratories, Wellcome Trust MRC Institute of Metabolic Science, University of Cambridge, Addenbrooke's Hospital, Cambridge CB2 0QQ, UK.
| | - Fiona M Gribble
- Metabolic Research Laboratories, Wellcome Trust MRC Institute of Metabolic Science, University of Cambridge, Addenbrooke's Hospital, Cambridge CB2 0QQ, UK.
| | - Frank Reimann
- Metabolic Research Laboratories, Wellcome Trust MRC Institute of Metabolic Science, University of Cambridge, Addenbrooke's Hospital, Cambridge CB2 0QQ, UK.
| | - Takashi Miki
- Department of Medical Physiology, Chiba University, Graduate School of Medicine, Chiba 260-8670, Japan.
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31
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Samodien E, Pheiffer C, Erasmus M, Mabasa L, Louw J, Johnson R. Diet-induced DNA methylation within the hypothalamic arcuate nucleus and dysregulated leptin and insulin signaling in the pathophysiology of obesity. Food Sci Nutr 2019; 7:3131-3145. [PMID: 31660128 PMCID: PMC6804761 DOI: 10.1002/fsn3.1169] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 07/18/2019] [Accepted: 07/24/2019] [Indexed: 12/24/2022] Open
Abstract
Obesity rates continue to rise in an unprecedented manner in what could be the most rapid population‐scale shift in human phenotype ever to occur. Increased consumption of unhealthy, calorie‐dense foods, coupled with sedentary lifestyles, is the main factor contributing to a positive energy balance and the development of obesity. Leptin and insulin are key hormones implicated in pathogenesis of this disorder and are crucial for controlling whole‐body energy homeostasis. Their respective function is mediated by the counterbalance of anorexigenic and orexigenic neurons located within the hypothalamic arcuate nucleus. Dysregulation of leptin and insulin signaling pathways within this brain region may contribute not only to the development of obesity, but also systemically affect the peripheral organs, thereby manifesting as metabolic diseases. Although the exact mechanisms detailing how these hypothalamic nuclei contribute to disease pathology are still unclear, increasing evidence suggests that altered DNA methylation may be involved. This review evaluates animal studies that have demonstrated diet‐induced DNA methylation changes in genes that regulate energy homeostasis within the arcuate nucleus, and elucidates possible mechanisms causing hypothalamic leptin and insulin resistance leading to the development of obesity and metabolic diseases.
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Affiliation(s)
- Ebrahim Samodien
- Biomedical Research and Innovation Platform South African Medical Research Council. Tygerberg Cape Town South Africa
| | - Carmen Pheiffer
- Biomedical Research and Innovation Platform South African Medical Research Council. Tygerberg Cape Town South Africa.,Department of Medical Physiology Stellenbosch University Tygerberg South Africa
| | - Melisse Erasmus
- Biomedical Research and Innovation Platform South African Medical Research Council. Tygerberg Cape Town South Africa.,Department of Medical Physiology Stellenbosch University Tygerberg South Africa
| | - Lawrence Mabasa
- Biomedical Research and Innovation Platform South African Medical Research Council. Tygerberg Cape Town South Africa
| | - Johan Louw
- Biomedical Research and Innovation Platform South African Medical Research Council. Tygerberg Cape Town South Africa.,Department of Biochemistry and Microbiology University of Zululand KwaDlangezwa South Africa
| | - Rabia Johnson
- Biomedical Research and Innovation Platform South African Medical Research Council. Tygerberg Cape Town South Africa.,Department of Medical Physiology Stellenbosch University Tygerberg South Africa
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Huang KP, Ronveaux CC, de Lartigue G, Geary N, Asarian L, Raybould HE. Deletion of leptin receptors in vagal afferent neurons disrupts estrogen signaling, body weight, food intake and hormonal controls of feeding in female mice. Am J Physiol Endocrinol Metab 2019; 316:E568-E577. [PMID: 30753113 PMCID: PMC6482667 DOI: 10.1152/ajpendo.00296.2018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Deletion of the leptin receptor from vagal afferent neurons (VAN) using a conditional deletion (Nav1.8/LepRfl/fl) results in an obese phenotype with increased food intake and lack of exogenous cholecystokinin (CCK)-induced satiation in male mice. Female mice are partially protected from weight gain and increased food intake in response to ingestion of high-fat (HF) diets. However, whether the lack of leptin signaling in VAN leads to an obese phenotype or disruption of hypothalamic-pituitary-gonadal axis function in female mice is unclear. Here, we tested the hypothesis that leptin signaling in VAN is essential to maintain estrogen signaling and control of food intake, energy expenditure, and adiposity in female mice. Female Nav1.8/LepRfl/fl mice gained more weight, had increased gonadal fat mass, increased meal number in the dark phase, and increased total food intake compared with wild-type controls. Resting energy expenditure was unaffected. The decrease in food intake produced by intraperitoneal injection of CCK (3 μg/kg body wt) was attenuated in female Nav1.8/LepRfl/fl mice compared with wild-type controls. Intraperitoneal injection of ghrelin (100 μg/kg body wt) increased food intake in Nav1.8/LepRfl/fl mice but not in wild-type controls. Ovarian steroidogenesis was suppressed, resulting in decreased plasma estradiol, which was accompanied by decreased expression of estrogen receptor-1 (Esr1) in VAN but not in the hypothalamic arcuate nucleus. These data suggest that the absence of leptin signaling in VAN is accompanied by disruption of estrogen signaling in female mice, leading to an obese phenotype possibly via altered control of feeding behavior.
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Affiliation(s)
- Kuei-Pin Huang
- Department of Anatomy, Physiology, and Cell Biology, School of Veterinary Medicine, University of California Davis , Davis, California
| | - Charlotte C Ronveaux
- Department of Anatomy, Physiology, and Cell Biology, School of Veterinary Medicine, University of California Davis , Davis, California
| | - Guillaume de Lartigue
- John B. Pierce Laboratory/Cellular and Molecular Physiology Department, Yale University School of Medicine , New Haven, Connecticut
| | - Nori Geary
- Department of Psychiatry, Weill Medical College of Cornell University , New York, New York
| | - Lori Asarian
- Department of Medicine-Immunobiology, Robert Larner College of Medicine, University of Vermont , Burlington, Vermont
| | - Helen E Raybould
- Department of Anatomy, Physiology, and Cell Biology, School of Veterinary Medicine, University of California Davis , Davis, California
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Young J, Xu C, Papadakis GE, Acierno JS, Maione L, Hietamäki J, Raivio T, Pitteloud N. Clinical Management of Congenital Hypogonadotropic Hypogonadism. Endocr Rev 2019; 40:669-710. [PMID: 30698671 DOI: 10.1210/er.2018-00116] [Citation(s) in RCA: 182] [Impact Index Per Article: 36.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 10/05/2018] [Indexed: 12/12/2022]
Abstract
The initiation and maintenance of reproductive capacity in humans is dependent on pulsatile secretion of the hypothalamic hormone GnRH. Congenital hypogonadotropic hypogonadism (CHH) is a rare disorder that results from the failure of the normal episodic GnRH secretion, leading to delayed puberty and infertility. CHH can be associated with an absent sense of smell, also termed Kallmann syndrome, or with other anomalies. CHH is characterized by rich genetic heterogeneity, with mutations in >30 genes identified to date acting either alone or in combination. CHH can be challenging to diagnose, particularly in early adolescence where the clinical picture mirrors that of constitutional delay of growth and puberty. Timely diagnosis and treatment will induce puberty, leading to improved sexual, bone, metabolic, and psychological health. In most cases, patients require lifelong treatment, yet a notable portion of male patients (∼10% to 20%) exhibit a spontaneous recovery of their reproductive function. Finally, fertility can be induced with pulsatile GnRH treatment or gonadotropin regimens in most patients. In summary, this review is a comprehensive synthesis of the current literature available regarding the diagnosis, patient management, and genetic foundations of CHH relative to normal reproductive development.
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Affiliation(s)
- Jacques Young
- University of Paris-Sud, Paris-Sud Medical School, Le Kremlin-Bicêtre, France.,Department of Reproductive Endocrinology, Assistance Publique-Hôpitaux de Paris, Bicêtre Hôpital, Le Kremlin-Bicêtre, France.,INSERM Unité 1185, Le Kremlin-Bicêtre, France
| | - Cheng Xu
- Service of Endocrinology, Diabetology, and Metabolism, Lausanne University Hospital, Lausanne, Switzerland.,Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - Georgios E Papadakis
- Service of Endocrinology, Diabetology, and Metabolism, Lausanne University Hospital, Lausanne, Switzerland
| | - James S Acierno
- Service of Endocrinology, Diabetology, and Metabolism, Lausanne University Hospital, Lausanne, Switzerland.,Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - Luigi Maione
- University of Paris-Sud, Paris-Sud Medical School, Le Kremlin-Bicêtre, France.,Department of Reproductive Endocrinology, Assistance Publique-Hôpitaux de Paris, Bicêtre Hôpital, Le Kremlin-Bicêtre, France.,INSERM Unité 1185, Le Kremlin-Bicêtre, France
| | - Johanna Hietamäki
- Children's Hospital, Pediatric Research Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.,Translational Stem Cell Biology and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Taneli Raivio
- Children's Hospital, Pediatric Research Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.,Translational Stem Cell Biology and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Nelly Pitteloud
- Service of Endocrinology, Diabetology, and Metabolism, Lausanne University Hospital, Lausanne, Switzerland.,Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
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Forny-Germano L, De Felice FG, Vieira MNDN. The Role of Leptin and Adiponectin in Obesity-Associated Cognitive Decline and Alzheimer's Disease. Front Neurosci 2019; 12:1027. [PMID: 30692905 PMCID: PMC6340072 DOI: 10.3389/fnins.2018.01027] [Citation(s) in RCA: 130] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 12/19/2019] [Indexed: 12/14/2022] Open
Abstract
Cross-talk between adipose tissue and central nervous system (CNS) underlies the increased risk of obese people to develop brain diseases such as cognitive and mood disorders. Detailed mechanisms for how peripheral changes caused by adipose tissue accumulation in obesity impact the CNS to cause brain dysfunction are poorly understood. Adipokines are a large group of substances secreted by the white adipose tissue to regulate a wide range of homeostatic processes including, but not limited to, energy metabolism and immunity. Obesity is characterized by a generalized change in the levels of circulating adipokines due to abnormal accumulation and dysfunction of adipose tissue. Altered adipokine levels underlie complications of obesity as well as the increased risk for the development of obesity-related comorbidities such as type 2 diabetes, cardiovascular and neurodegenerative diseases. Here, we review the literature for the role of adipokines as key mediators of the communication between periphery and CNS in health and disease. We will focus on the actions of leptin and adiponectin, two of the most abundant and well studied adipokines, in the brain, with particular emphasis on how altered signaling of these adipokines in obesity may lead to cognitive dysfunction and augmented risk for Alzheimer's disease. A better understanding of adipokine biology in brain disorders may prove of major relevance to diagnostic, prevention and therapy.
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Affiliation(s)
- Leticia Forny-Germano
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fernanda G. De Felice
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- Centre for Neuroscience Studies, Department of Psychiatry, Queen’s University, Kingston, ON, Canada
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Palhinha L, Liechocki S, Hottz ED, Pereira JADS, de Almeida CJ, Moraes-Vieira PMM, Bozza PT, Maya-Monteiro CM. Leptin Induces Proadipogenic and Proinflammatory Signaling in Adipocytes. Front Endocrinol (Lausanne) 2019; 10:841. [PMID: 31920961 PMCID: PMC6923660 DOI: 10.3389/fendo.2019.00841] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 11/19/2019] [Indexed: 12/12/2022] Open
Abstract
Background: Leptin is an adipokine with well-known effects on the central nervous system including the induction of energy expenditure and satiety. Leptin also has major relevance when activating immune cells and modulating inflammatory response. In obesity, increases in white adipose tissue accumulation and leptin levels are accompanied by hypothalamic resistance to leptin. Even though the adipose tissue is a leptin-rich environment, the local actions of leptin regarding adipogenesis were not thoroughly investigated until now. Here we evaluate the contributions of leptins direct signaling in preadipocytes and adipose tissue-derived stromal cells (ASCs) for adipogenesis. Methods: Adipocytes were differentiated from the murine lineage of preadipocytes 3T3-L1 or ASCs from subcutaneous and visceral (retroperitoneal) fat depots from C57Bl/6J mice. Differentiating cells were treated with leptin in addition to or in replacement of insulin. The advance of adipogenesis was assessed by the expression and secretion of adipogenesis- and lipogenesis-related proteins by Western blot and immunoenzimatic assays, and the accumulation of lipid droplets by fluorescence microscopy. Results: Leptin treatment in 3T3-L1 preadipocytes or ASCs increased the production of the adipogenesis- and lipogenesis-related proteins PLIN1, CAV-1, PPARγ, SREBP1C, and/or adiponectin at earlier stages of differentiation. In 3T3-L1 preadipocytes, we found that leptin induced lipid droplets' formation in an mTOR-dependent manner. Also, leptin induced a proinflammatory cytokine profile in 3T3-L1 and ASCs, modulating the production of TNF-α, IL-10, and IL-6. Since insulin is considered an essential factor for preadipocyte differentiation, we asked whether leptin would support adipogenesis in the absence of insulin. Importantly, leptin induced the formation of lipid droplets and the expression of adipogenesis-related proteins independently of insulin during the differentiation of 3T3-L1 cells and ASCs. Conclusions: Our results demonstrate that leptin induces intracellular signaling in preadipocytes and adipocytes promoting adipogenesis and modulating the secretion of inflammatory mediators. Also, leptin restores adipogenesis in the absence of insulin. These findings contribute to the understanding of the local signaling of leptin in precursor and mature adipose cells. The proadipogenic role of leptin unraveled here may be of especial relevance during obesity, when its central signaling is defective.
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Affiliation(s)
- Lohanna Palhinha
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
| | - Sally Liechocki
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
| | - Eugenio D. Hottz
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
- Laboratory of Glycoconjugates Analysis, Department of Biochemistry, Federal University of Juiz de Fora (UFJF), Juiz de Fora, Brazil
| | - Jéssica Aparecida da Silva Pereira
- Laboratory of Immunometabolism, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
- Post-Graduate Program in Immunology, Institute of Biological Sciences, University of Sao Paulo, São Paulo, Brazil
| | - Cecília J. de Almeida
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
| | - Pedro Manoel M. Moraes-Vieira
- Laboratory of Immunometabolism, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
- Post-Graduate Program in Immunology, Institute of Biological Sciences, University of Sao Paulo, São Paulo, Brazil
- Experimental Medicine Research Cluster, EMRC, University of Cammpinas, Campinas, Brazil
| | - Patrícia T. Bozza
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
| | - Clarissa Menezes Maya-Monteiro
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
- *Correspondence: Clarissa Menezes Maya-Monteiro ;
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36
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Rafique N, Salem AM, Latif R, ALSheikh MH. Serum leptin level across different phases of menstrual cycle in normal weight and overweight/obese females. Gynecol Endocrinol 2018; 34:601-604. [PMID: 29268651 DOI: 10.1080/09513590.2017.1419173] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
We compared serum leptin levels during various phases of menstrual cycle and its correlation with serum estradiol between normal weight and overweight/obese young females. Fifty-six young females with normal menstrual cycle were grouped into 26 normal weight and 30 overweight/obese subjects. Serum leptin and estradiol levels were measured during early follicular, pre-ovulatory and luteal phases of menstrual cycle in both groups using ELISA technique. Serum leptin levels were significantly different across different phases of menstrual cycle with a steady increment from follicular phase (9.97 ± 5.48 ng/dl) through pre-ovulatory phase (11.58 ± 6.49 ng/dl) with their peaks in luteal phase (12.52 ± 6.39 ng/dl, p < .001). Same pattern of change during menstrual phases was observed when the normal weight and overweight/obese group were analyzed separately. Serum leptin levels were significantly higher in overweight/obese group compared to normal weight subjects. In any of the study groups, leptin levels were not found to be correlated with estradiol level during different phases of menstrual cycle.
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Affiliation(s)
- Nazish Rafique
- a Department of Physiology , College of Medicine, Imam Abdulrahman Bin Faisal University , Dammam , Saudi Arabia
| | - Ayad M Salem
- a Department of Physiology , College of Medicine, Imam Abdulrahman Bin Faisal University , Dammam , Saudi Arabia
| | - Rabia Latif
- a Department of Physiology , College of Medicine, Imam Abdulrahman Bin Faisal University , Dammam , Saudi Arabia
| | - Mona H ALSheikh
- a Department of Physiology , College of Medicine, Imam Abdulrahman Bin Faisal University , Dammam , Saudi Arabia
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Tan H, Chen W, Liu Q, Yang G, Li K. Pectin Oligosaccharides Ameliorate Colon Cancer by Regulating Oxidative Stress- and Inflammation-Activated Signaling Pathways. Front Immunol 2018; 9:1504. [PMID: 30013563 PMCID: PMC6036268 DOI: 10.3389/fimmu.2018.01504] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 06/18/2018] [Indexed: 12/20/2022] Open
Abstract
Colon cancer (CC) is the third common neoplasm worldwide, and it is still a big challenge for exploring new effective medicine for treating CC. Natural product promoting human health has become a hot topic and attracted many researchers recently. Pectin, a complex polysaccharide in plant cell wall, mainly consists of four major types of polysaccharides: homogalacturonan, xylogalacturonan, rhamnogalacturonan I and II, all of which can be degraded into various pectin oligosaccharides (POS) and may provide abundant resource for exploring potential anticancer drugs. POS have been regarded as a novel class of potential functional food with multiple health-promoting properties. POS have antibacterial activities against some aggressive and recurrent bacterial infection and exert beneficial immunomodulation for controlling CC risk. However, the molecular functional role of POS in the prevention of CC risk and progression remains doubtful. The review focuses on antioxidant and anti-inflammatory roles of POS for promoting human health by regulating some potential oxidative and inflammation-activated pathways, such as ATP-activated protein kinase (AMPK), nuclear factor erythroid-2-related factor-2 (Nrf2), and nuclear factor-κB (NF-κB) pathways. The activation of these signaling pathways increases the antioxidant and antiinflammatory activities, which will result in the apoptosis of CC cells or in the prevention of CC risk and progression. Thus, POS may inhibit CC development by affecting antioxidant and antiinflammatory signaling pathways AMPK, Nrf2, and NF-κB. However, POS also can activate signal transduction and transcriptional activator 1 and 3 signaling pathway, which will reduce antioxidant and anti-inflammatory properties and promote CC progression. Specific structural and structurally modified POS may be associated with their functions and should be deeply explored in the future. The present review paper lacks the important information for the linkage between the specific structure of POS and its function. To further explore the effects of prebiotic potential of POS and their derivatives on human immunomodulation in the prevention of CC, the specific POS with a certain degree of polymerization or purified polymers are highly demanded to be performed in clinical practice.
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Affiliation(s)
- Haidong Tan
- Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Wei Chen
- Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Qishun Liu
- Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Guojun Yang
- Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Kuikui Li
- Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
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38
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Xu C, Messina A, Somm E, Miraoui H, Kinnunen T, Acierno J, Niederländer NJ, Bouilly J, Dwyer AA, Sidis Y, Cassatella D, Sykiotis GP, Quinton R, De Geyter C, Dirlewanger M, Schwitzgebel V, Cole TR, Toogood AA, Kirk JM, Plummer L, Albrecht U, Crowley WF, Mohammadi M, Tena-Sempere M, Prevot V, Pitteloud N. KLB, encoding β-Klotho, is mutated in patients with congenital hypogonadotropic hypogonadism. EMBO Mol Med 2018; 9:1379-1397. [PMID: 28754744 PMCID: PMC5623842 DOI: 10.15252/emmm.201607376] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Congenital hypogonadotropic hypogonadism (CHH) is a rare genetic form of isolated gonadotropin‐releasing hormone (GnRH) deficiency caused by mutations in > 30 genes. Fibroblast growth factor receptor 1 (FGFR1) is the most frequently mutated gene in CHH and is implicated in GnRH neuron development and maintenance. We note that a CHH FGFR1 mutation (p.L342S) decreases signaling of the metabolic regulator FGF21 by impairing the association of FGFR1 with β‐Klotho (KLB), the obligate co‐receptor for FGF21. We thus hypothesized that the metabolic FGF21/KLB/FGFR1 pathway is involved in CHH. Genetic screening of 334 CHH patients identified seven heterozygous loss‐of‐function KLB mutations in 13 patients (4%). Most patients with KLB mutations (9/13) exhibited metabolic defects. In mice, lack of Klb led to delayed puberty, altered estrous cyclicity, and subfertility due to a hypothalamic defect associated with inability of GnRH neurons to release GnRH in response to FGF21. Peripheral FGF21 administration could indeed reach GnRH neurons through circumventricular organs in the hypothalamus. We conclude that FGF21/KLB/FGFR1 signaling plays an essential role in GnRH biology, potentially linking metabolism with reproduction.
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Affiliation(s)
- Cheng Xu
- Service of Endocrinology, Diabetology & Metabolism, Lausanne University Hospital, Lausanne, Switzerland
| | - Andrea Messina
- Service of Endocrinology, Diabetology & Metabolism, Lausanne University Hospital, Lausanne, Switzerland
| | - Emmanuel Somm
- Service of Endocrinology, Diabetology & Metabolism, Lausanne University Hospital, Lausanne, Switzerland
| | - Hichem Miraoui
- Service of Endocrinology, Diabetology & Metabolism, Lausanne University Hospital, Lausanne, Switzerland
| | - Tarja Kinnunen
- Department of Biology, School of Applied Sciences, University of Huddersfield, Huddersfield, UK
| | - James Acierno
- Service of Endocrinology, Diabetology & Metabolism, Lausanne University Hospital, Lausanne, Switzerland
| | - Nicolas J Niederländer
- Service of Endocrinology, Diabetology & Metabolism, Lausanne University Hospital, Lausanne, Switzerland
| | - Justine Bouilly
- Service of Endocrinology, Diabetology & Metabolism, Lausanne University Hospital, Lausanne, Switzerland
| | - Andrew A Dwyer
- Service of Endocrinology, Diabetology & Metabolism, Lausanne University Hospital, Lausanne, Switzerland.,University of Lausanne Institute of Higher Education and Research in Healthcare, Lausanne, Switzerland
| | - Yisrael Sidis
- Service of Endocrinology, Diabetology & Metabolism, Lausanne University Hospital, Lausanne, Switzerland
| | - Daniele Cassatella
- Service of Endocrinology, Diabetology & Metabolism, Lausanne University Hospital, Lausanne, Switzerland
| | - Gerasimos P Sykiotis
- Service of Endocrinology, Diabetology & Metabolism, Lausanne University Hospital, Lausanne, Switzerland
| | - Richard Quinton
- Institute for Genetic Medicine, University of Newcastle-on-Tyne, Newcastle-on Tyne, UK
| | - Christian De Geyter
- Clinic of Gynecological Endocrinology and Reproductive Medicine, University Hospital, University of Basel, Basel, Switzerland
| | - Mirjam Dirlewanger
- Pediatric Endocrine and Diabetes Unit, Children's Hospital, University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - Valérie Schwitzgebel
- Pediatric Endocrine and Diabetes Unit, Children's Hospital, University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - Trevor R Cole
- Department of Clinical Genetics, Birmingham Women's Hospital, Birmingham, UK
| | - Andrew A Toogood
- Department of Endocrinology, Queen Elizabeth Hospital, University Hospitals Birmingham, Birmingham, UK
| | - Jeremy Mw Kirk
- Department of Endocrinology, Birmingham Children's Hospital, Birmingham, UK
| | - Lacey Plummer
- National Center for Translational Research in Reproduction and Infertility, Harvard Reproductive Endocrine Sciences Center of the Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Urs Albrecht
- Department of Biology, Biochemistry, Faculty of Science, University of Fribourg, Fribourg, Switzerland
| | - William F Crowley
- National Center for Translational Research in Reproduction and Infertility, Harvard Reproductive Endocrine Sciences Center of the Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Moosa Mohammadi
- Department of Biochemistry & Molecular Pharmacology, New York University School of Medicine, New York, NY, USA
| | - Manuel Tena-Sempere
- Department of Cell Biology, Physiology and Immunology, University of Cordoba, Cordoba, Spain.,Instituto Maimonides de Investigación Biomédica de Cordoba (IMIBIC/HURS), Cordoba, Spain.,CIBER Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Cordoba, Spain
| | - Vincent Prevot
- Inserm, Laboratory of Development and Plasticity of the Neuroendocrine Brain, JPARC, Lille, France.,FHU 1000 Days for Health, School of Medicine, University of Lille, Lille, France
| | - Nelly Pitteloud
- Service of Endocrinology, Diabetology & Metabolism, Lausanne University Hospital, Lausanne, Switzerland
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Salpietro V, Polizzi A, Recca G, Ruggieri M. The role of puberty and adolescence in the pathobiology of pediatric multiple sclerosis. ACTA ACUST UNITED AC 2018. [DOI: 10.1186/s40893-017-0032-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Pérez‐Pérez A, Toro A, Vilariño‐García T, Maymó J, Guadix P, Dueñas JL, Fernández‐Sánchez M, Varone C, Sánchez‐Margalet V. Leptin action in normal and pathological pregnancies. J Cell Mol Med 2018; 22:716-727. [PMID: 29160594 PMCID: PMC5783877 DOI: 10.1111/jcmm.13369] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 07/10/2017] [Indexed: 12/11/2022] Open
Abstract
Leptin is now considered an important signalling molecule of the reproductive system, as it regulates the production of gonadotrophins, the blastocyst formation and implantation, the normal placentation, as well as the foeto-placental communication. Leptin is a peptide hormone secreted mainly by adipose tissue, and the placenta is the second leptin-producing tissue in humans. Placental leptin is an important cytokine which regulates placental functions in an autocrine or paracrine manner. Leptin seems to play a crucial role during the first stages of pregnancy as it modulates critical processes such as proliferation, protein synthesis, invasion and apoptosis in placental cells. Furthermore, deregulation of leptin levels has been correlated with the pathogenesis of various disorders associated with reproduction and gestation, including polycystic ovary syndrome, recurrent miscarriage, gestational diabetes mellitus, pre-eclampsia and intrauterine growth restriction. Due to the relevant incidence of the mentioned diseases and the importance of leptin, we decided to review the latest information available about leptin action in normal and pathological pregnancies to support the idea of leptin as an important factor and/or predictor of diverse disorders associated with reproduction and pregnancy.
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Affiliation(s)
- Antonio Pérez‐Pérez
- Department of Medical Biochemistry and Molecular BiologyVirgen Macarena University HospitalUniversity of SevilleSevilleSpain
| | - Ayelén Toro
- Laboratory of Placental Molecular PhysiologyDepartment of Biological ChemistrySchool of SciencesUniversity of Buenos AiresIQUIBICEN‐CONICETBuenos AiresArgentina
| | - Teresa Vilariño‐García
- Department of Medical Biochemistry and Molecular BiologyVirgen Macarena University HospitalUniversity of SevilleSevilleSpain
| | - Julieta Maymó
- Laboratory of Placental Molecular PhysiologyDepartment of Biological ChemistrySchool of SciencesUniversity of Buenos AiresIQUIBICEN‐CONICETBuenos AiresArgentina
| | - Pilar Guadix
- Department of Obstetrics and GynecologyVirgen Macarena University HospitalUniversity of SevilleSevilleSpain
| | - José L. Dueñas
- Department of Obstetrics and GynecologyVirgen Macarena University HospitalUniversity of SevilleSevilleSpain
| | | | - Cecilia Varone
- Laboratory of Placental Molecular PhysiologyDepartment of Biological ChemistrySchool of SciencesUniversity of Buenos AiresIQUIBICEN‐CONICETBuenos AiresArgentina
| | - Víctor Sánchez‐Margalet
- Department of Medical Biochemistry and Molecular BiologyVirgen Macarena University HospitalUniversity of SevilleSevilleSpain
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Chen J, Cao M, Zhang A, Shi M, Tao B, Li Y, Wang Y, Zhu Z, Trudeau VL, Hu W. Growth Hormone Overexpression Disrupts Reproductive Status Through Actions on Leptin. Front Endocrinol (Lausanne) 2018; 9:131. [PMID: 29636726 PMCID: PMC5880896 DOI: 10.3389/fendo.2018.00131] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 03/13/2018] [Indexed: 01/02/2023] Open
Abstract
Growth and reproduction are closely related. Growth hormone (GH)-transgenic common carp exhibit accelerated growth and delayed reproductive development, which provides an amenable model to study hormone cross talk between the growth and reproductive axes. We analyzed the energy status and reproductive development in GH-transgenic common carp by using multi-tissue RNA sequencing, real-time-PCR, Western blotting, ELISA, immunofluorescence, and in vitro incubation. The expression of gys (glycogen synthase) and igfbp1 (insulin-like growth factor binding protein) as well as blood glucose concentrations are lower in GH-transgenic carp. Agrp1 (agouti-related protein 1) and sla (somatolactin a), which are related to appetite and lipid catabolism, are significantly higher in GH-transgenic carp. Low glucose content and increased appetite indicate disrupted metabolic and energy deprivation status in GH-transgenic carp. Meanwhile, the expression of genes, such as gnrhr2 (gonadotropin-releasing hormone receptor 2), gthα (gonadotropin hormone, alpha polypeptide), fshβ (follicle stimulating hormone, beta polypeptide), lhβ [luteinizing hormone, beta polypeptide] in the pituitary, cyp19a1a (aromatase A) in the gonad, and cyp19a1b (aromatase B) in the hypothalamus, are decreased in GH-transgenic carp. In contrast, pituitary gnih (gonadotropin inhibitory hormone), drd1 (dopamine receptor D1), drd3 (dopamine receptor D3), and drd4 (dopamine receptor D4) exhibit increased expression, which were associated with the retarded reproductive development. Leptin receptor mRNA was detected by fluorescence in situ hybridization in the pituitary including the pars intermedia and proximal pars distalis, suggesting a direct effect of leptin on LH. Recombinant carp Leptin protein was shown to stimulate pituitary gthα, fshβ, lhβ expression, and ovarian germinal vesicle breakdown in vitro. In addition to neuroendocrine factors, we suggest that reduced hepatic leptin signaling to the pituitary might be part of the response to overexpression of GH and the resulting delay in puberty onset.
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Affiliation(s)
- Ji Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Mengxi Cao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- Institute of Environment and Health, Jianghan University, Wuhan, China
| | - Aidi Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Mijuan Shi
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Binbin Tao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Yongming Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Yaping Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Zuoyan Zhu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Vance L. Trudeau
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
- *Correspondence: Vance L. Trudeau, ; Wei Hu,
| | - Wei Hu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- *Correspondence: Vance L. Trudeau, ; Wei Hu,
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Nakao K, Iwata K, Takeshita T, Ozawa H. Expression of hypothalamic kisspeptin, neurokinin B, and dynorphin A neurons attenuates in female Zucker fatty rats. Neurosci Lett 2017; 665:135-139. [PMID: 29203206 DOI: 10.1016/j.neulet.2017.12.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 11/25/2017] [Accepted: 12/01/2017] [Indexed: 10/18/2022]
Abstract
Zucker fatty (ZF) rats are considered to be an obese model due to leptin receptor abnormality and such rats show infertility. Pulsatile gonadotropin-releasing hormone/luteinizing hormone (LH) secretion, which is important for follicular development in females, is considered to be controlled by KNDy neurons coexpressing kisspeptin, neurokinin B (NKB), and dynorphin A (DynA), encoded by Kiss1, Tac3, and Pdyn, respectively, in the hypothalamic arcuate nucleus (ARC). The purpose of this study is to examine the expression of KNDy neurons in female ZF rats by histochemical approach because pulsatile LH secretion is suppressed. Zucker lean (ZL) rats served as a control group. Animals were ovariectomized and subcutaneously implanted with a silicon tube containing estradiol to produce plasma level of estradiol during diestrus. Plasma LH levels decreased in ZF rats compared with ZL rats. The expressions of each mRNA (Kiss1, Tac3, and Pdyn) and each peptide (kisspeptin, NKB, and DynA) in the ARC significantly decreased in ZF rats compared with ZL rats. However, the number of Kiss1 neurons in the anterior ventral periventricular nucleus did not significantly differ between the two groups. These results suggest that dysfunction of leptin signaling negatively affects KNDy neurons in the ARC, resulting in reproductive dysfunction caused by suppression of the LH pulse.
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Affiliation(s)
- Kimihiko Nakao
- Department of Reproductive Medicine, Perinatology and Gynecologic Oncology, Graduate School of Medicine, Nippon Medical School, Bunkyo-ku, Tokyo 113-8602, Japan
| | - Kinuyo Iwata
- Department of Anatomy and Neurobiology, Graduate School of Medicine, Nippon Medical School, Bunkyo-ku, Tokyo 113-8602, Japan
| | - Toshiyuki Takeshita
- Department of Reproductive Medicine, Perinatology and Gynecologic Oncology, Graduate School of Medicine, Nippon Medical School, Bunkyo-ku, Tokyo 113-8602, Japan
| | - Hitoshi Ozawa
- Department of Anatomy and Neurobiology, Graduate School of Medicine, Nippon Medical School, Bunkyo-ku, Tokyo 113-8602, Japan.
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Abstract
Zusammenfassung
Autosomal-rezessiv vererbte Mutationen in den Genen für Leptin, Leptinrezeptor, Proopiomelanocortin (POMC) und Prohormon-Convertase (PC1) führen zu einer ausgeprägten frühkindlichen Adipositas. Patienten mit biologisch inaktivem Leptin oder Leptinmangel können mit humanem rekombinanten Leptin erfolgreich behandelt werden. Für die anderen Patienten hat sich die Behandlung mit einem α‑MSH-Analogon als erfolgreich erwiesen (POMC-Patienten) bzw. befindet sich derzeit in Erprobung.
Kodominant vererbte Mutationen im MC4R-Gen stellen die häufigste Form der monogenen Adipositas dar. Eine kausale Therapie ist hier allerdings nicht möglich.
Es sind inzwischen noch weitere, autosomal-rezessiv vererbte Genmutationen identifiziert worden, die ebenfalls mit einer ausgeprägten Adipositas assoziiert sind. Die meisten dieser Mutationen liegen in Genen, die in die Signaltransduktion von MC4R oder dem Leptinrezeptor involviert sind. Auch für diese Patienten gibt es aktuell noch keine kausale Therapie.
Schlussfolgerung: Bei Patienten mit extremer frühkindlicher Adipositas sollte eine molekulargenetische Diagnostik eingeleitet werden, da die Diagnosestellung für die Betroffenen und ihre Familie eine enorme Erleichterung bedeuten kann. Außerdem gewinnen die Familien Klarheit über das Wiederholungsrisiko und eventuell ist sogar eine kausale oder zumindest optimierte Therapie möglich.
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Affiliation(s)
- Julia von Schnurbein
- Aff1 grid.410712.1 Klinik für Kinder- und Jugendmedizin, Zentrum für Seltene Erkrankungen (ZSE) Ulm, Sektion Pädiatrische Endokrinologie und Diabetologie Universitätsklinik für Kinder- und Jugendmedizin Eythstr. 24 89075 Ulm Deutschland
| | - Martin Wabitsch
- Aff1 grid.410712.1 Klinik für Kinder- und Jugendmedizin, Zentrum für Seltene Erkrankungen (ZSE) Ulm, Sektion Pädiatrische Endokrinologie und Diabetologie Universitätsklinik für Kinder- und Jugendmedizin Eythstr. 24 89075 Ulm Deutschland
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Sámano R, Martínez-Rojano H, Chico-Barba G, Godínez-Martínez E, Sánchez-Jiménez B, Montiel-Ojeda D, Tolentino M. Serum Concentration of Leptin in Pregnant Adolescents Correlated with Gestational Weight Gain, Postpartum Weight Retention and Newborn Weight/Length. Nutrients 2017; 9:nu9101067. [PMID: 28953229 PMCID: PMC5691684 DOI: 10.3390/nu9101067] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Revised: 09/06/2017] [Accepted: 09/12/2017] [Indexed: 12/21/2022] Open
Abstract
Introduction: Gestational weight gain is an important modifiable factor known to influence fetal outcomes including birth weight and adiposity. Leptin is normally correlated with adiposity and is also known to increase throughout pregnancy, as the placenta becomes a source of leptin synthesis. Several studies have reported positive correlations between cord blood leptin level and either birthweight or size for gestational age, as well as body mass index (BMI). Objective: To determine the correlation of prenatal leptin concentration in pregnant adolescents with their gestational weight gain, postpartum weight retention, and weight/length of their newborn. Methods: A cohort study was conducted on pregnant Mexican adolescents from Gestational Week 26–28 to three months postpartum (n = 168 mother–child dyads). An anthropometric assessment was made of each pregnant adolescent, and the serum level of leptin and the intake of energy were determined. The newborn was evaluated each month during postpartum. Clinical records were reviewed to obtain sociodemographic data. Bivariate correlations, tests for repeating measurements and logistic regression models were performed. Results: Leptin concentration gradually increased during the third trimester of pregnancy. At Gestation Week 36, leptin level correlated with gestational weight gain. When comparing adolescents that had the lowest and highest concentration of leptin, the former presented a mean of 6 kg less in gestational weight gain (inter-subject leptin concentration, p = 0.001; inter-subject energy intake, p = 0.497). Leptin concentration and gestational weight gain exerted an effect on the weight of the newborn (inter-subject leptin concentration for Week 32, p = 0.024; inter-subject gestational weight gain, p = 0.011). Newborn length was associated with leptin concentration at Week 28 (leptin effect, p = 0.003; effect of gestational weight gain, p = 0.722). Conclusions: Pregnant adolescents with leptin concentration over 20 ng/mL showed a greater gestational weight gain. Leptin concentration correlated with length and weight of the newborn.
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Affiliation(s)
- Reyna Sámano
- Departamento de Nutrición y Bioprogramación, Instituto Nacional de Perinatología, Secretaría de Salud, 11000 Ciudad de México, Mexico.
| | - Hugo Martínez-Rojano
- Sección de Posgrado e Investigación, Escuela Superior de Medicina del Instituto Politécnico Nacional, 11340 Ciudad de México, Mexico.
- Coordinación de Medicina Laboral, Instituto de Diagnóstico y Referencia Epidemiológicos (InDRE) "Dr. Manuel Martínez Báez", Secretaría de Salud, 01480 Ciudad de México, Mexico.
| | - Gabriela Chico-Barba
- Departamento de Nutrición y Bioprogramación, Instituto Nacional de Perinatología, Secretaría de Salud, 11000 Ciudad de México, Mexico.
| | - Estela Godínez-Martínez
- Departamento de Nutrición y Bioprogramación, Instituto Nacional de Perinatología, Secretaría de Salud, 11000 Ciudad de México, Mexico.
| | - Bernarda Sánchez-Jiménez
- Subdirección de Investigación en Intervenciones Comunitarias del Instituto Nacional de Perinatología, Secretaría de Salud, 11000 Ciudad de México, Mexico.
| | - Diana Montiel-Ojeda
- Universidad del Valle de México, Chapultepec, 11810 Ciudad de México, Mexico.
| | - Maricruz Tolentino
- Departamento de Nutrición y Bioprogramación, Instituto Nacional de Perinatología, Secretaría de Salud, 11000 Ciudad de México, Mexico.
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Bailey AM, Legan SJ, Meretsky VJ, Demas GE. Effects of exogenous leptin on seasonal reproductive responses to interacting environmental cues in female Siberian hamsters. Gen Comp Endocrinol 2017; 250:95-103. [PMID: 28619288 DOI: 10.1016/j.ygcen.2017.06.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 06/09/2017] [Accepted: 06/10/2017] [Indexed: 11/19/2022]
Abstract
Animals living in temperate climates respond to environmental cues that signal current and future resource availability to ensure that energy resources are available to support reproduction. Siberian hamsters (Phodopus sungorus) undergo robust gonadal regression in short, winter-like photoperiods as well as in response to mild food restriction in intermediate photoperiods. The goal of the present study was to investigate whether leptin is a relevant metabolic signal in regulating gonadal regression in response to diminishing food availability. Adult female hamsters housed in short-day (winter-like) or intermediate (fall-like) photoperiods received either ad libitum access to food or mild food restriction (90% of ad libitum intake) and were treated with either leptin or a vehicle for five weeks in order to determine the ability of leptin to inhibit gonadal regression. At the end of five weeks, vehicle-treated hamsters showed physiological signs associated with ongoing gonadal regression, such as decreases in body mass and food intake, cessation of estrous cycling, and small decreases in reproductive tissue mass. Leptin did not modify changes in body mass, food intake, hormone concentration, or tissue mass, but showed a tendency to support estrous cycling, particularly in response to food restriction in the intermediate photoperiod treatment. Overall, leptin appears to play a minor role in coordinating reproductive responses to multiple environmental cues, at least in the early stages of gonadal regression.
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Affiliation(s)
- Allison M Bailey
- Department of Biology, Indiana University, 1001 E 3rd St., Bloomington, IN, USA.
| | - Sandra J Legan
- Department of Physiology, University of Kentucky, 508 Medical Science Building, Lexington, KY, USA.
| | - Vicky J Meretsky
- School of Public and Environmental Affairs, Indiana University, 315 E 10th St., Bloomington, IN, USA.
| | - Gregory E Demas
- Department of Biology, Indiana University, 1001 E 3rd St., Bloomington, IN, USA.
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Chachlaki K, Garthwaite J, Prevot V. The gentle art of saying NO: how nitric oxide gets things done in the hypothalamus. Nat Rev Endocrinol 2017. [PMID: 28621341 DOI: 10.1038/nrendo.2017.69] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The chemical signalling molecule nitric oxide (NO), which freely diffuses through aqueous and lipid environments, subserves an array of functions in the mammalian central nervous system, such as the regulation of synaptic plasticity, blood flow and neurohormone secretion. In this Review, we consider the cellular and molecular mechanisms by which NO evokes short-term and long-term changes in neuronal activity. We also highlight recent studies showing that discrete populations of neurons that synthesize NO in the hypothalamus constitute integrative systems that support life by relaying metabolic and gonadal signals to the neuroendocrine brain, and thus gate the onset of puberty and adult fertility. The putative involvement and therapeutic potential of NO in the pathophysiology of brain diseases, for which hormonal imbalances during postnatal development could be risk factors, is also discussed.
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Affiliation(s)
- Konstantina Chachlaki
- Inserm, Laboratory of Development and Plasticity of the Neuroendocrine Brain, Jean-Pierre Aubert Research Centre, UMR-S 1172, 1 place de Verdun, F-59000 Lille, France
- University of Lille, University Hospital Federations (FHU) 1,000 days for Health, School of Medicine, 1 place de Verdun, F-59000 Lille, France
| | - John Garthwaite
- The Wolfson Institute for Biomedical Research, University College London, Gower Street, London WC1E 6BT, UK
| | - Vincent Prevot
- Inserm, Laboratory of Development and Plasticity of the Neuroendocrine Brain, Jean-Pierre Aubert Research Centre, UMR-S 1172, 1 place de Verdun, F-59000 Lille, France
- University of Lille, University Hospital Federations (FHU) 1,000 days for Health, School of Medicine, 1 place de Verdun, F-59000 Lille, France
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Oride A, Kanasaki H, Mijiddorj T, Sukhbaatar U, Hara T, Tumurbaatar T, Kyo S. GLP-1 increases Kiss-1 mRNA expression in kisspeptin-expressing neuronal cells†. Biol Reprod 2017; 97:240-248. [DOI: 10.1093/biolre/iox087] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Accepted: 08/04/2017] [Indexed: 12/26/2022] Open
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Bento-Bernardes T, Toste FP, Pazos-Moura CC, Oliveira KJ. Maternal cinnamon extract intake during lactation leads to sex-specific endocrine modifications in rat offspring. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2017; 97:3855-3863. [PMID: 28182286 DOI: 10.1002/jsfa.8253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Revised: 10/25/2016] [Accepted: 02/02/2017] [Indexed: 06/06/2023]
Abstract
BACKGROUND Cinnamon supplementation has been associated with an improvement in glucose disposal and a reduction in fat mass in type 2 diabetes. Maternal nutrition during lactation impacts the health of the offspring throughout life. We hypothesize that cinnamon intake by lactating rats affects maternal physiology, leading to hormonal and metabolic changes in their offspring. To investigate this hypothesis, dams received aqueous cinnamon extract (400 mg cinnamon kg-1 body mass day-1 ) or water orally, during lactation. RESULTS Maternal cinnamon intake did not affect the body mass gain or food intake of dams or their offspring, although it decreased visceral white adipose tissue mass in dams and in their adult offspring of both sexes. Cinnamon-treated dams exhibited no differences in serum insulin, adiponectin, leptin or estradiol levels, although they presented higher serum progesterone. At weaning, cinnamon male pups exhibited lower insulinemia, whereas cinnamon female pups exhibited lower glycemia. Interestingly, in adulthood, only the female offspring exhibited an altered hormonal profile, with reduced serum leptin, adiponectin and insulin levels accompanied by lower glycemia. CONCLUSION The present study demonstrates that maternal cinnamon intake during lactation promotes mild changes in dams and can trigger sex-specific metabolic programming in pups that lasts into adulthood. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Thais Bento-Bernardes
- Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Rio de Janeiro, Brazil
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fernanda P Toste
- Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Rio de Janeiro, Brazil
| | - Carmen C Pazos-Moura
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Karen J Oliveira
- Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Rio de Janeiro, Brazil
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Sagedal LR, Vistad I, Øverby NC, Bere E, Torstveit MK, Lohne-Seiler H, Hillesund ER, Pripp A, Henriksen T. The effect of a prenatal lifestyle intervention on glucose metabolism: results of the Norwegian Fit for Delivery randomized controlled trial. BMC Pregnancy Childbirth 2017; 17:167. [PMID: 28577545 PMCID: PMC5457543 DOI: 10.1186/s12884-017-1340-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 05/23/2017] [Indexed: 12/03/2022] Open
Abstract
Background The effectiveness of prenatal lifestyle intervention to prevent gestational diabetes and improve maternal glucose metabolism remains to be established. The Norwegian Fit for Delivery (NFFD) randomized, controlled trial studied the effect of a combined lifestyle intervention provided to a general population, and found significantly lower gestational weight gain among intervention participants but no improvement in obstetrical outcomes or the proportion of large infants. The aim of the present study is to examine the effect of the NFFD intervention on glucose metabolism, including an assessment of the subgroups of normal-weight and overweight/obese participants. Methods Healthy, non-diabetic women expecting their first child, with pre-pregnancy body mass index (BMI) ≥19 kg/m2, age ≥ 18 years and a singleton pregnancy of ≤20 gestational-weeks were enrolled from healthcare clinics in southern Norway. Gestational weight gain was the primary endpoint. Participants (n = 606) were individually randomized to intervention (two dietary consultations and access to twice-weekly exercise groups) or control group (routine prenatal care). The effect of intervention on glucose metabolism was a secondary endpoint, measuring glucose (fasting and 2-h following 75-g glucose load), insulin, homeostatic assessment of insulin resistance (HOMA-IR) and leptin levels at gestational-week 30. Results Blood samples from 557 (91.9%) women were analyzed. For the total group, intervention resulted in reduced insulin (adj. Mean diff −0.91 mU/l, p = 0.045) and leptin levels (adj. Mean diff -207 pmol/l, p = 0.021) compared to routine care, while glucose levels were unchanged. However, the effect of intervention on both fasting and 2-h glucose was modified by pre-pregnancy BMI (interaction p = 0.030 and p = 0.039, respectively). For overweight/obese women (n = 158), intervention was associated with increased risk of at least one glucose measurement exceeding International Association of Pregnancy and Diabetes Study Group thresholds (33.7% vs. 13.9%, adj. OR 3.89, p = 0.004). Conclusions The Norwegian Fit for Delivery intervention lowered neither glucose levels nor GDM incidence, despite reductions in insulin and leptin. Prenatal combined lifestyle interventions designed for a general population may be unsuited to reduce GDM risk, particularly among overweight/obese women, who may require earlier and more targeted interventions. Trial registration ClinicalTrials.gov ID NCT01001689, registered July 2, 2009, confirmed completed October 26, 2009 (retrospectively registered).
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Affiliation(s)
- Linda R Sagedal
- Department of Obstetrics and Gynecology/Department of Research, Sørlandet Hospital, Postbox 416, 4604, Kristiansand, Norway.
| | - Ingvild Vistad
- Department of Obstetrics and Gynecology/Department of Research, Sørlandet Hospital, Postbox 416, 4604, Kristiansand, Norway
| | - Nina C Øverby
- Department of Public Health, Sports and Nutrition, University of Agder, Postbox 422, 4604, Kristiansand, Norway
| | - Elling Bere
- Department of Public Health, Sports and Nutrition, University of Agder, Postbox 422, 4604, Kristiansand, Norway
| | - Monica K Torstveit
- Department of Public Health, Sports and Nutrition, University of Agder, Postbox 422, 4604, Kristiansand, Norway
| | - Hilde Lohne-Seiler
- Department of Public Health, Sports and Nutrition, University of Agder, Postbox 422, 4604, Kristiansand, Norway
| | - Elisabet R Hillesund
- Department of Public Health, Sports and Nutrition, University of Agder, Postbox 422, 4604, Kristiansand, Norway
| | - Are Pripp
- Department of Biostatistics and Epidemiology, Oslo University Hospital, Postbox 4950, Nydalen, 0424, Oslo, Norway
| | - Tore Henriksen
- Section of Obstetrics, Women and Children's Division, Oslo University Hospital and University of Oslo, Postbox 4950, Nydalen, 0424, Oslo, Norway
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