1
|
Lopez I, Truskey GA. Multi-cellular engineered living systems to assess reproductive toxicology. Reprod Toxicol 2024; 127:108609. [PMID: 38759876 PMCID: PMC11179964 DOI: 10.1016/j.reprotox.2024.108609] [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: 12/21/2023] [Revised: 05/07/2024] [Accepted: 05/09/2024] [Indexed: 05/19/2024]
Abstract
Toxicants and some drugs can negatively impact reproductive health. Many toxicants haven't been tested due to lack of available models. The impact of many drugs taken during pregnancy to address maternal health may adversely affect fetal development with life-long effects and clinical trials do not examine toxicity effects on the maternal-fetal interface, requiring indirect assessment of safety and efficacy. Due to current gaps in reproductive toxicological knowledge and limitations of animal models, multi-cellular engineered living systems may provide solutions for modeling reproductive physiology and pathology for chemical and xenobiotic toxicity studies. Multi-cellular engineered living systems, such as microphysiological systems (MPS) and organoids, model of functional units of tissues. In this review, we highlight the key functions and structures of human reproductive organs and well-known representative toxicants afflicting these systems. We then discuss current approaches and specific studies where scientists have used MPS or organoids to recreate in vivo markers and cellular responses of the female and male reproductive system, as well as pregnancy-associated placenta formation and embryo development. We provide specific examples of organoids and organ-on-chip that have been used for toxicological purposes with varied success. Finally, we address current issues related to usage of MPS, emerging techniques for improving upon these complications, and improvements needed to make MPS more capable in assessing reproductive toxicology. Overall, multi-cellular engineered living systems have considerable promise to serve as a suitable, alternative reproductive biological model compared to animal studies and 2D culture.
Collapse
Affiliation(s)
- Isabella Lopez
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, United States
| | - George A Truskey
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, United States.
| |
Collapse
|
2
|
Segarra I, Menárguez M, Roqué MV. Women's health, hormonal balance, and personal autonomy. Front Med (Lausanne) 2023; 10:1167504. [PMID: 37457571 PMCID: PMC10347535 DOI: 10.3389/fmed.2023.1167504] [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: 03/10/2023] [Accepted: 05/30/2023] [Indexed: 07/18/2023] Open
Abstract
Hormone-based contraception disrupts hormonal balance, creating artificial states of anovulation and threatening women's health. We reviewed its main adverse effects and mechanisms on accelerated ovarian aging, mental health (emotional disruptions, depression, and suicide), sexuality (reduced libido), cardiovascular (brain stroke, myocardial infarction, hypertension, and thrombosis), and oncological (breast, cervical, and endometrial cancers). Other "collateral damage" includes negative effects on communication, scientific mistrust, poor physician-patient relationships, increased patient burden, economic drain on the healthcare system, and environmental pollution. Hormone-sensitive tumors present a dilemma owing to their potential dual effects: preventing some cancers vs. higher risk for others remains controversial, with denial or dismissal as non-relevant adverse effects, information avoidance, and modification of scientific criteria. This lack of clinical assessment poses challenges to women's health and their right to autonomy. Overcoming these challenges requires an anthropological integration of sexuality, as the focus on genital bodily union alone fails to encompass the intimate relational expression of individuals, complete sexual satisfaction, and the intertwined feelings of trust, safety, tenderness, and endorsement of women's femininity.
Collapse
Affiliation(s)
- Ignacio Segarra
- Department of Pharmacy, Faculty of Pharmacy and Nutrition, Catholic University of Murcia (UCAM), Murcia, Spain
- “Pharmacokinetics, Patient Care and Translational Bioethics” Research Group, Faculty of Pharmacy and Nutrition, Catholic University of Murcia (UCAM), Murcia, Spain
| | - Micaela Menárguez
- Bioethics Chair, Faculty of Medicine, Catholic University of Murcia (UCAM), Murcia, Spain
| | - María Victoria Roqué
- “Pharmacokinetics, Patient Care and Translational Bioethics” Research Group, Faculty of Pharmacy and Nutrition, Catholic University of Murcia (UCAM), Murcia, Spain
- Bioethics Chair, Faculty of Medicine, Catholic University of Murcia (UCAM), Murcia, Spain
| |
Collapse
|
3
|
Buckenmeyer MJ, Sukhwani M, Iftikhar A, Nolfi AL, Xian Z, Dadi S, Case ZW, Steimer SR, D’Amore A, Orwig KE, Brown BN. A bioengineered in situ ovary (ISO) supports follicle engraftment and live-births post-chemotherapy. J Tissue Eng 2023; 14:20417314231197282. [PMID: 38029018 PMCID: PMC10656812 DOI: 10.1177/20417314231197282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 08/10/2023] [Indexed: 12/01/2023] Open
Abstract
Female cancer patients who have undergone chemotherapy have an elevated risk of developing ovarian dysfunction and failure. Experimental approaches to treat iatrogenic infertility are evolving rapidly; however, challenges and risks remain that hinder clinical translation. Biomaterials have improved in vitro follicle maturation and in vivo transplantation in mice, but there has only been marginal success for early-stage human follicles. Here, we developed methods to obtain an ovarian-specific extracellular matrix hydrogel to facilitate follicle delivery and establish an in situ ovary (ISO), which offers a permissive environment to enhance follicle survival. We demonstrate sustainable follicle engraftment, natural pregnancy, and the birth of healthy pups after intraovarian microinjection of isolated exogenous follicles into chemotherapy-treated (CTx) mice. Our results confirm that hydrogel-based follicle microinjection could offer a minimally invasive delivery platform to enhance follicle integration for patients post-chemotherapy.
Collapse
Affiliation(s)
- Michael J Buckenmeyer
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, USA
| | - Meena Sukhwani
- Department of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Aimon Iftikhar
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Alexis L Nolfi
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Ziyu Xian
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
| | - Srujan Dadi
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
| | - Zachary W Case
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Sarah R Steimer
- Department of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Antonio D’Amore
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA
- Fondazione RiMED, Palermo, Italy
| | - Kyle E Orwig
- Department of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Bryan N Brown
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| |
Collapse
|
4
|
Li L, Zhang J, Lu C, Wang B, Guo J, Zhang H, Cui S. MicroRNA-7a2 Contributes to Estrogen Synthesis and Is Modulated by FSH via the JNK Signaling Pathway in Ovarian Granulosa Cells. Int J Mol Sci 2022; 23:ijms23158565. [PMID: 35955699 PMCID: PMC9369042 DOI: 10.3390/ijms23158565] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 07/28/2022] [Accepted: 07/30/2022] [Indexed: 11/22/2022] Open
Abstract
MicroRNA-7a2 (miR-7a2) plays fundamental roles in the female reproductive axis, and estrogen is indispensable for maintaining ovary function. However, the interaction between miR-7a2 and ovarian function is unclear. The present study aimed to determine whether and how miR-7a2 functions in estrogen synthesis. Firstly, the results verified that miR-7a was highly expressed in ovarian granulosa cells. The knockout (KO) of miR-7a2 caused infertility and abnormal ovarian function in mice. Concomitantly, the Cyp19a1 expression and estrogen synthesis were significantly inhibited, which was validated in primary granulosa cells. The mice transplanted with miR-7a2 KO ovaries showed similar results; however, estrogen supplementation reversed infertility. In the in vitro experiment, follicle-stimulating hormone (FSH) significantly improved the expression of miR-7a and Cyp19a1 and the synthesis of estrogen. However, the miR-7a2 KO markedly reversed the function of FSH. Also, FSH upregulated miR-7a by activating the (c-Jun N-terminal kinase) JNK signaling pathway. In addition, Golgi apparatus protein 1 (Glg1) was shown to be the target gene of miR-7a2. These findings indicated that miR-7a2 is essential for ovarian functions with respect to estrogen synthesis through the targeted inhibition of the expression of Glg1 and then promoting Cyp19a1 expression; the physiological process was positively regulated by FSH via the JNK signaling pathway in granulosa cells.
Collapse
Affiliation(s)
- Liuhui Li
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (L.L.); (C.L.); (B.W.); (J.G.); (H.Z.)
| | - Jinglin Zhang
- Institute of Reproduction and Metabolism, Yangzhou University, Yangzhou 225009, China;
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
| | - Chenyang Lu
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (L.L.); (C.L.); (B.W.); (J.G.); (H.Z.)
| | - Bingjie Wang
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (L.L.); (C.L.); (B.W.); (J.G.); (H.Z.)
| | - Jiajia Guo
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (L.L.); (C.L.); (B.W.); (J.G.); (H.Z.)
| | - Haitong Zhang
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (L.L.); (C.L.); (B.W.); (J.G.); (H.Z.)
| | - Sheng Cui
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (L.L.); (C.L.); (B.W.); (J.G.); (H.Z.)
- Institute of Reproduction and Metabolism, Yangzhou University, Yangzhou 225009, China;
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, China
- Correspondence:
| |
Collapse
|
5
|
Organ-on-a-chip technology for the study of the female reproductive system. Adv Drug Deliv Rev 2021; 173:461-478. [PMID: 33831478 DOI: 10.1016/j.addr.2021.03.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 02/11/2021] [Accepted: 03/16/2021] [Indexed: 12/12/2022]
Abstract
Over the past decade, organs-on-a-chip and microphysiological systems have emerged as a disruptive in vitro technology for biopharmaceutical applications. By enabling new capabilities to engineer physiological living tissues and organ units in the precisely controlled environment of microfabricated devices, these systems offer great promise to advance the frontiers of basic and translational research in biomedical sciences. Here, we review an emerging body of interdisciplinary work directed towards harnessing the power of organ-on-a-chip technology for reproductive biology and medicine. The focus of this topical review is to provide an overview of recent progress in the development of microengineered female reproductive organ models with relevance to drug delivery and discovery. We introduce the engineering design of these advanced in vitro systems and examine their applications in the study of pregnancy, infertility, and reproductive diseases. We also present two case studies that use organ-on-a-chip design principles to model placental drug transport and hormonally regulated crosstalk between multiple female reproductive organs. Finally, we discuss challenges and opportunities for the advancement of reproductive organ-on-a-chip technology.
Collapse
|
6
|
Lin PH, Lin LT, Li CJ, Kao PG, Tsai HW, Chen SN, Wen ZH, Wang PH, Tsui KH. Combining Bioinformatics and Experiments to Identify CREB1 as a Key Regulator in Senescent Granulosa Cells. Diagnostics (Basel) 2020; 10:diagnostics10050295. [PMID: 32403258 PMCID: PMC7277907 DOI: 10.3390/diagnostics10050295] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 05/08/2020] [Accepted: 05/08/2020] [Indexed: 02/07/2023] Open
Abstract
Aging of functional ovaries occurs many years before aging of other organs in the female body. In recent years, a greater number of women continue to postpone their pregnancies to later stages in their lives, raising concerns of the effect of ovarian aging. Mitochondria play an important role in the connection between the aging granulosa cells and oocytes. However, the underlying mechanisms of mitochondrial dysfunction in these cells remain poorly understood. Therefore, we evaluated the molecular mechanism of the aging granulosa cells, including aspects such as accumulation of mitochondrial reactive oxygen species, reduction of mtDNA, imbalance of mitochondrial dynamics, and diminished cell proliferation. Here, we applied bioinformatics approaches, and integrated publicly available resources, to investigate the role of CREB1 gene expression in reproduction. Senescence hallmark enrichment and pathway analysis suggested that the downregulation of bioenergetic-related genes in CREB1. Gene expression analyses showed alterations in genes related to energy metabolism and ROS production in ovary tissue. We also demonstrate that the biogenesis of aging granulosa cells is subject to CREB1 binding to the PRKAA1 and PRKAA2 upstream promoters. In addition, cofactors that regulate biogenesis significantly increase the levels of SIRT1 and PPARGC1A mRNA in the aging granulosa cells. These findings demonstrate that CREB1 elevates an oxidative stress-induced senescence in granulosa cells by reducing the mitochondrial function.
Collapse
Affiliation(s)
- Pei-Hsuan Lin
- Department of Obstetrics and Gynecology, Kaohsiung Veterans General Hospital, Kaohsiung 813, Taiwan; (P.-H.L.); (L.-T.L.); (C.-J.L.); (P.-G.K.); (H.-W.T.); (S.-N.C.)
- Daan Maternal and Children Hospital, Tainan 700, Taiwan
| | - Li-Te Lin
- Department of Obstetrics and Gynecology, Kaohsiung Veterans General Hospital, Kaohsiung 813, Taiwan; (P.-H.L.); (L.-T.L.); (C.-J.L.); (P.-G.K.); (H.-W.T.); (S.-N.C.)
- Institute of BioPharmaceutical Sciences, National Sun Yat-sen University, Kaohsiung 804, Taiwan
- Department of Obstetrics and Gynecology, School of Medicine, National Yang-Ming University, Taipei 112, Taiwan;
| | - Chia-Jung Li
- Department of Obstetrics and Gynecology, Kaohsiung Veterans General Hospital, Kaohsiung 813, Taiwan; (P.-H.L.); (L.-T.L.); (C.-J.L.); (P.-G.K.); (H.-W.T.); (S.-N.C.)
- Institute of BioPharmaceutical Sciences, National Sun Yat-sen University, Kaohsiung 804, Taiwan
| | - Pei-Gang Kao
- Department of Obstetrics and Gynecology, Kaohsiung Veterans General Hospital, Kaohsiung 813, Taiwan; (P.-H.L.); (L.-T.L.); (C.-J.L.); (P.-G.K.); (H.-W.T.); (S.-N.C.)
| | - Hsiao-Wen Tsai
- Department of Obstetrics and Gynecology, Kaohsiung Veterans General Hospital, Kaohsiung 813, Taiwan; (P.-H.L.); (L.-T.L.); (C.-J.L.); (P.-G.K.); (H.-W.T.); (S.-N.C.)
- Institute of BioPharmaceutical Sciences, National Sun Yat-sen University, Kaohsiung 804, Taiwan
| | - San-Nung Chen
- Department of Obstetrics and Gynecology, Kaohsiung Veterans General Hospital, Kaohsiung 813, Taiwan; (P.-H.L.); (L.-T.L.); (C.-J.L.); (P.-G.K.); (H.-W.T.); (S.-N.C.)
| | - Zhi-Hong Wen
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan;
| | - Peng-Hui Wang
- Department of Obstetrics and Gynecology, School of Medicine, National Yang-Ming University, Taipei 112, Taiwan;
- Department of Obstetrics and Gynecology, Taipei Veterans General Hospital, Taipei 112, Taiwan
- Department of Medical Research, China Medical University Hospital, Taichung 404, Taiwan
- Female Cancer Foundation, Taipei 104, Taiwan
| | - Kuan-Hao Tsui
- Department of Obstetrics and Gynecology, Kaohsiung Veterans General Hospital, Kaohsiung 813, Taiwan; (P.-H.L.); (L.-T.L.); (C.-J.L.); (P.-G.K.); (H.-W.T.); (S.-N.C.)
- Institute of BioPharmaceutical Sciences, National Sun Yat-sen University, Kaohsiung 804, Taiwan
- Department of Obstetrics and Gynecology, School of Medicine, National Yang-Ming University, Taipei 112, Taiwan;
- Department of Pharmacy and Master Program, College of Pharmacy and Health Care, Tajen University, Pingtung County 907, Taiwan
- Correspondence:
| |
Collapse
|
7
|
Khaltourina D, Matveyev Y, Alekseev A, Cortese F, Ioviţă A. Aging Fits the Disease Criteria of the International Classification of Diseases. Mech Ageing Dev 2020; 189:111230. [PMID: 32251691 DOI: 10.1016/j.mad.2020.111230] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 03/04/2020] [Accepted: 03/09/2020] [Indexed: 12/24/2022]
Abstract
The disease criteria used by the World Health Organization (WHO) were applied to human biological aging in order to assess whether aging can be classified as a disease. These criteria were developed for the 11th revision of the International Classification of Diseases (ICD) and included disease diagnostics, mechanisms, course and outcomes, known interventions, and linkage to genetic and environmental factors. RESULTS: Biological aging can be diagnosed with frailty indices, functional, blood-based biomarkers. A number of major causal mechanisms of human aging involved in various organs have been described, such as inflammation, replicative cellular senescence, immune senescence, proteostasis failures, mitochondrial dysfunctions, fibrotic propensity, hormonal aging, body composition changes, etc. We identified a number of clinically proven interventions, as well as genetic and environmental factors of aging. Therefore, aging fits the ICD-11 criteria and can be considered a disease. Our proposal was submitted to the ICD-11 Joint Task force, and this led to the inclusion of the extension code for "Ageing-related" (XT9T) into the "Causality" section of the ICD-11. This might lead to greater focus on biological aging in global health policy and might provide for more opportunities for the new therapy developers.
Collapse
Affiliation(s)
- Daria Khaltourina
- Department of Risk Factor Prevention, Federal Research Institute for Health Organization and Informatics of Ministry of Health of the Russian Federation, Dobrolyubova St. 11, Moscow, 127254, Russia; International Longevity Alliance, 19 avenue Jean Jaurès, Sceaux, 92330, France.
| | - Yuri Matveyev
- Research Lab, Moscow Regional Research and Clinical Institute, Schepkina St. 61/2 k.1, Moscow, 129110, Russia
| | - Aleksey Alekseev
- Faculty of Physics, Lomonosov Moscow State University, Leninskie Gory, GSP-1, Moscow, 119991, Russia
| | - Franco Cortese
- Biogerontology Research Foundation, Apt 2354 Chynoweth House, Trevissome Park, Truro, London, TR4 8UN, UK
| | - Anca Ioviţă
- International Longevity Alliance, 19 avenue Jean Jaurès, Sceaux, 92330, France
| |
Collapse
|
8
|
Raoofi A, Rostamzadeh A, Ahmadi R, Heydari M. Effects of nitric oxide on reproductive organs and related physiological processes. ASIAN PACIFIC JOURNAL OF REPRODUCTION 2020. [DOI: 10.4103/2305-0500.288583] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
|
9
|
Bueno LM, Caun DL, Comelis MT, Beguelini MR, Taboga SR, Morielle‐Versute E. Ovarian morphology and folliculogenesis and ovulation process in the flat‐faced fruit‐eating bat
Artibeus planirostris
and the Argentine brown bat
Eptesicus furinalis
: A comparative analysis. ACTA ZOOL-STOCKHOLM 2018. [DOI: 10.1111/azo.12247] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Larissa Mayumi Bueno
- Department of Zoology and BotanyInstitute of Biosciences, Humanities and Exact Sciences (Ibilce)Campus São José do Rio PretoSão Paulo State University (UNESP) São Paulo Brazil
| | - Dianelli Lisboa Caun
- Department of Zoology and BotanyInstitute of Biosciences, Humanities and Exact Sciences (Ibilce)Campus São José do Rio PretoSão Paulo State University (UNESP) São Paulo Brazil
| | - Manuela Tosi Comelis
- Department of Zoology and BotanyInstitute of Biosciences, Humanities and Exact Sciences (Ibilce)Campus São José do Rio PretoSão Paulo State University (UNESP) São Paulo Brazil
| | - Mateus Rodrigues Beguelini
- Center of Biological and Health SciencesUFOB – Universidade Federal do Oeste da Bahia Bahia Barreiras Brazil
| | - Sebastião Roberto Taboga
- Department of BiologyInstitute of Biosciences, Humanities and Exact Sciences (Ibilce)Campus São José do Rio PretoSão Paulo State University (UNESP) São Paulo Brazil
| | - Eliana Morielle‐Versute
- Department of Zoology and BotanyInstitute of Biosciences, Humanities and Exact Sciences (Ibilce)Campus São José do Rio PretoSão Paulo State University (UNESP) São Paulo Brazil
| |
Collapse
|
10
|
Laws KM, Drummond-Barbosa D. Control of Germline Stem Cell Lineages by Diet and Physiology. Results Probl Cell Differ 2017; 59:67-99. [PMID: 28247046 DOI: 10.1007/978-3-319-44820-6_3] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Tight coupling of reproduction to environmental factors and physiological status is key to long-term species survival. In particular, highly conserved pathways modulate germline stem cell lineages according to nutrient availability. This chapter focuses on recent in vivo studies in genetic model organisms that shed light on how diet-dependent signals control the proliferation, maintenance, and survival of adult germline stem cells and their progeny. These signaling pathways can operate intrinsically in the germ line, modulate the niche, or act through intermediate organs to influence stem cells and their differentiating progeny. In addition to illustrating the extent of dietary regulation of reproduction, findings from these studies have implications for fertility during aging or disease states.
Collapse
Affiliation(s)
- Kaitlin M Laws
- Department of Biochemistry and Molecular Biology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, 21205, USA
| | - Daniela Drummond-Barbosa
- Department of Biochemistry and Molecular Biology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, 21205, USA. .,Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, 21205, USA.
| |
Collapse
|
11
|
Bermudez V, Salazar J, Martínez MS, Chávez-Castillo M, Olivar LC, Calvo MJ, Palmar J, Bautista J, Ramos E, Cabrera M, Pachano F, Rojas J. Prevalence and Associated Factors of Insulin Resistance in Adults from Maracaibo City, Venezuela. Adv Prev Med 2016; 2016:9405105. [PMID: 27579182 PMCID: PMC4989131 DOI: 10.1155/2016/9405105] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Accepted: 05/26/2016] [Indexed: 12/25/2022] Open
Abstract
Background and Aim. Insulin resistance (IR) is a prominent pathophysiologic component in a myriad of metabolic disorders, including obesity, prediabetes, and type 2 diabetes mellitus, which are common in our locality. The objective of this study was to determine the prevalence of IR and factors associated with this condition in an adult population from Maracaibo city, Venezuela. Methodology. A cross-sectional, descriptive study with multistaged randomized sampling was carried out in 2026 adults. IR was defined as HOMA2-IR ≥ 2. A multiple logistic regression model was constructed in order to evaluate factors associated with IR. Results. The prevalence of IR was 46.5% (n = 943), with 46.7% (n = 450) in the general population, 46.4% (n = 493) in females, and 47.90% (n = 970) in males (p = 0.895). IR prevalence tended to increase with age and was significantly greater in subjects aged ≥30 years (χ (2) = 16.726; p = 2.33 × 10(-4)). Employment, alcohol consumption, obesity, high triacylglycerides, low HDL-C, and dysglycemia were associated with greater odds of IR, whereas a high level of physical activity appeared to be weak protective factor against IR. Conclusions. The prevalence of IR is elevated in our locality. The main determinants of this condition appear to be the presence of obesity, high triacylglycerides, low HDL-C, dysglycemia, and alcohol intake.
Collapse
Affiliation(s)
- Valmore Bermudez
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela
| | - Juan Salazar
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela
| | - María Sofía Martínez
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela
| | - Mervin Chávez-Castillo
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela
| | - Luis Carlos Olivar
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela
| | - María José Calvo
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela
| | - Jim Palmar
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela
| | - Jordan Bautista
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela
| | - Eduardo Ramos
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela
| | - Mayela Cabrera
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela
| | - Freddy Pachano
- Morphologic Sciences Department and Pediatric Surgery Department, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela
| | - Joselyn Rojas
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela
| |
Collapse
|