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Pencheva M, Rashev P, Koeva Y, Atanassova N, Keskinova D. The testicular form of angiotensin converting enzyme as a marker for human sperm quality assessment. Folia Med (Plovdiv) 2023; 65:933-939. [PMID: 38351783 DOI: 10.3897/folmed.65.e101144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 04/05/2023] [Indexed: 02/16/2024] Open
Abstract
INTRODUCTION Spermatozoa are rapidly changing cellular structures that are highly dependent on their interaction with the environment. These interactions cause fundamental changes in the spermatozoa's cells and membrane.
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Affiliation(s)
| | - Pavel Rashev
- Academician K. Bratanov Institute of Biology and Immunology of Reproduction, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Yvetta Koeva
- Medical University of Plovdiv, Plovdiv, Bulgaria
| | - Nina Atanassova
- Institute of Experimental Morphology, Pathology and Anthropology with Museum, Sofia, Bulgaria
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Qi R, Zhang T, Zhang Y, Chung JPW, Yang WJ, Wang CC. Association of angiotensin II and receptors in peri-implantation endometrium with microvessel density and pregnancy outcomes of women with recurrent implantation failure after embryo transfer. Front Endocrinol (Lausanne) 2023; 14:1206326. [PMID: 37711897 PMCID: PMC10497869 DOI: 10.3389/fendo.2023.1206326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 07/31/2023] [Indexed: 09/16/2023] Open
Abstract
Purpose Investigate whether local angiotensin II (AngII) and its AngII type 1 and 2 receptors (AT1R, AT2R) in the endometrium are different and correlate with microvessel density in women with reproductive failure and pregnancy outcomes. Methods Endometrium during the window of implantation from 40 women with recurrent miscarriage (RM) and 40 with recurrent implantation failure (RIF) were compared with 27 fertile women. Peri-implantation endometrium from 54 women prior to euploid embryo transfer were collected and compared in women with successful pregnancy and unsuccessful pregnancy. Results Compared with fertile women, expression of AT2R was significantly lower, while AT1R/AT2R expression ratio was significantly higher in the stroma of the RIF group. Endometrium arteriole MVD was significantly lower and negatively correlated with the AT1R/AT2R expression ratio in the stroma of the RIF group. No significant differences and correlations were found in the RM group. Compared with the pregnancy group, expression of AT1R and AT2R were significantly lower in all compartments, but only AT1R/AT2R ratio was significantly higher in the stroma of the non-pregnancy group. Similarly, endometrium arteriole MVD was also significantly lower and negatively correlated with the AT1R/AT2R ratio in the stroma of the non-pregnancy group. Conclusion Local renin-angiotensin system is dysregulated in peri-implantation endometrium and associated with abnormal angiogenesis in RIF and poor implantation outcome after embryo transfer.
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Affiliation(s)
- Ruofan Qi
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Tao Zhang
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Yingying Zhang
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Jacqueline Pui Wah Chung
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Wen-Jui Yang
- Department of Infertility and Reproductive Medicine, Taiwan IVF Group Center, Hsinchu, Taiwan
- Department of Fertility and Reproductive Medicine, Ton-Yen General Hospital, Hsinchu, Taiwan
| | - Chi Chiu Wang
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
- Reproduction and Development Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
- Chinese University of Hong Kong -Sichuan University Joint Laboratory in Reproductive Medicine, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
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Yoshihara M, Mizutani S, Kato Y, Matsumoto K, Mizutani E, Mizutani H, Fujimoto H, Osuka S, Kajiyama H. Recent Insights into Human Endometrial Peptidases in Blastocyst Implantation via Shedding of Microvesicles. Int J Mol Sci 2021; 22:13479. [PMID: 34948276 PMCID: PMC8708926 DOI: 10.3390/ijms222413479] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/02/2021] [Accepted: 12/14/2021] [Indexed: 12/13/2022] Open
Abstract
Blastocyst implantation involves multiple interactions with numerous molecules expressed in endometrial epithelial cells (EECs) during the implantation window; however, there is limited information regarding the molecular mechanism underlying the crosstalk. In blastocysts, fibronectin plays a major role in the adhesion of various types of cells by binding to extracellular matrix proteins via the Arg-Gly-Asp (RGD) motif. In EECs, RGD-recognizing integrins are important bridging receptors for fibronectin, whereas the non-RGD binding of fibronectin includes interactions with dipeptidyl peptidase IV (DPPIV)/cluster of differentiation (CD) 26. Fibronectin may also bind to aminopeptidase N (APN)/CD13, and in the endometrium, these peptidases are present in plasma membranes and lysosomal membranes. Blastocyst implantation is accompanied by lysosome exocytosis, which transports various peptidases and nutrients into the endometrial cavity to facilitate blastocyst implantation. Both DPPIV and APN are released into the uterine cavity via shedding of microvesicles (MVs) from EECs. Recently, extracellular vesicles derived from endometrial cells have been proposed to act on trophectoderm cells to promote implantation. MVs are also secreted from embryonal stem cells and may play an active role in implantation. Thus, crosstalk between the blastocyst and endometrium via extracellular vesicles is a new insight into the fundamental molecular basis of blastocyst implantation.
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Affiliation(s)
- Masato Yoshihara
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan; (H.M.); (H.F.); (S.O.); (H.K.)
| | - Shigehiko Mizutani
- Daiyabilding Lady’s Clinic, 1-1-17 Meieki, Nishi-ku, Nagoya 451-0045, Japan;
| | - Yukio Kato
- Department of Molecular Pharmacotherapeutics, Faculty of Pharmacy, Kanazawa University, Kanazawa 920-1192, Japan;
| | - Kunio Matsumoto
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kanazawa 920-1192, Japan;
| | - Eita Mizutani
- Daiyabilding Lady’s Clinic, 1-1-17 Meieki, Nishi-ku, Nagoya 451-0045, Japan;
| | - Hidesuke Mizutani
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan; (H.M.); (H.F.); (S.O.); (H.K.)
| | - Hiroki Fujimoto
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan; (H.M.); (H.F.); (S.O.); (H.K.)
- Discipline of Obstetrics and Gynaecology, Adelaide Medical School, Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia
| | - Satoko Osuka
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan; (H.M.); (H.F.); (S.O.); (H.K.)
| | - Hiroaki Kajiyama
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan; (H.M.); (H.F.); (S.O.); (H.K.)
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4
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Yang X, Liu S, Zhang Z. Sex difference in blood pressure, a combinatorial consequence of the differential in RAAS components, sex hormones and time course. Curr Hypertens Rev 2021; 18:11-16. [PMID: 33992057 DOI: 10.2174/1573402117666210511011444] [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: 12/03/2020] [Revised: 01/26/2021] [Accepted: 03/02/2021] [Indexed: 11/22/2022]
Abstract
The longitudinal increment of blood pressure (BP) with age is attributed to lifestyle, internal and external environments. It is not limited to systemic brain-derived neurotrophic factor (BDNF), signaling to allow the individuals to better adapt to the developmental and environmental change. This regulation is necessary for all lives, regardless of sex. Basic levels of renin-angiotensin- aldosterone system (RAAS) components in males and females define the fundamental sex difference in BP, which may be set by prenatal programming and profoundly influence BP after birth. The innate sex difference in BP is magnified during puberty growth and further modified by menopause. At the age of 70 or older, blood pressure was similar in men and women. The understanding of the prenatal setup and development of sexual dimorphism in BP may provide preventative therapeutic strategies, including timing and drugs, for individuals with abnormal BP.
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Affiliation(s)
- Xiaomei Yang
- College of Basic Medicine, Henan University of Chinese Medicine,156,Jinshui East Road ,Zhengdong New District, Zhengzhou, Henan 450046. China
| | - Shien Liu
- College of Basic Medicine, Henan University of Chinese Medicine,156,Jinshui East Road ,Zhengdong New District, Zhengzhou, Henan 450046. China
| | - Zhongming Zhang
- College of Chinese Medicine, and Henan Key Laboratory of Zhang Zhongjing Formulae and Herbs for Immunoregulation, Nanyang Institute of Technology; 80 Changjiang Rd. Nanyang, Henan, 473004. China
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Cerrizuela S, Vega-Lopez GA, Aybar MJ. The role of teratogens in neural crest development. Birth Defects Res 2020; 112:584-632. [PMID: 31926062 DOI: 10.1002/bdr2.1644] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 12/11/2019] [Accepted: 12/22/2019] [Indexed: 12/13/2022]
Abstract
The neural crest (NC), discovered by Wilhelm His 150 years ago, gives rise to a multipotent migratory embryonic cell population that generates a remarkably diverse and important array of cell types during the development of the vertebrate embryo. These cells originate in the neural plate border (NPB), which is the ectoderm between the neural plate and the epidermis. They give rise to the neurons and glia of the peripheral nervous system, melanocytes, chondrocytes, smooth muscle cells, odontoblasts and neuroendocrine cells, among others. Neurocristopathies are a class of congenital diseases resulting from the abnormal induction, specification, migration, differentiation or death of NC cells (NCCs) during embryonic development and have an important medical and societal impact. In general, congenital defects affect an appreciable percentage of newborns worldwide. Some of these defects are caused by teratogens, which are agents that negatively impact the formation of tissues and organs during development. In this review, we will discuss the teratogens linked to the development of many birth defects, with a strong focus on those that specifically affect the development of the NC, thereby producing neurocristopathies. Although increasing attention is being paid to the effect of teratogens on embryonic development in general, there is a strong need to critically evaluate the specific role of these agents in NC development. Therefore, increased understanding of the role of these factors in NC development will contribute to the planning of strategies aimed at the prevention and treatment of human neurocristopathies, whose etiology was previously not considered.
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Affiliation(s)
- Santiago Cerrizuela
- Área Biología Experimental, Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT), Tucumán, Argentina.,Instituto de Biología "Dr. Francisco D. Barbieri", Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Tucumán, Argentina
| | - Guillermo A Vega-Lopez
- Área Biología Experimental, Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT), Tucumán, Argentina.,Instituto de Biología "Dr. Francisco D. Barbieri", Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Tucumán, Argentina
| | - Manuel J Aybar
- Área Biología Experimental, Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT), Tucumán, Argentina.,Instituto de Biología "Dr. Francisco D. Barbieri", Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Tucumán, Argentina
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Mizutani S, Matsumoto K, Kato Y, Mizutani E, Mizutani H, Iwase A, Shibata K. New insights into human endometrial aminopeptidases in both implantation and menstruation. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2019; 1868:140332. [PMID: 31765716 DOI: 10.1016/j.bbapap.2019.140332] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 11/19/2019] [Accepted: 11/21/2019] [Indexed: 01/16/2023]
Abstract
The endometrium cycle involves proliferation of endometrial epithelial cells in preparation for implantation of fertilized ovum. With ovulation, the endometrium secretes nutrients such as peptides and amino acids into the endometrial cavity. The histological evidence of ovulation in normal menstrual cycle includes subnuclear glycogen vacuoles surrounded by placental leucine aminopeptidase (P-LAP) in endometrial epithelial cells. P-LAP is an essentially involved in intracellular trafficking of glucose transporter (GLUT) 4 which is primarily important for glucose uptake in skeletal muscles and fat tissues. On the other hand, glucose influx from blood into endometrial epithelial cells is not mainly mediated by GLUTs, but by coincident appearing progesterone just after ovulation. Progesterone increases permeability of not only plasma membranes, but also lysosomal membranes, and this may be primarily involved in glucose influx. Progesterone also expands the exocytosis in the endometrium after ovulation, and endometrial secretion after ovulation is possibly apocrine and holocrine, which is augmented and exaggerated exocytosis of the lysosomal contents. The endometrial spiral arteries/arterioles are surrounded by endometrial stromal cells which are differentiated into decidual/pre-decidual cells. Decidual cells are devoid of aminopeptidase A (APA), possibly leading to enhancement of Angiotensin-II action in decidual cell area due to loss of its degradation by APA. Angiotensin-II is thought to exert growth-factor-like effects in post-implantation embryos in decidual cells, thereby contributing to implantation. Without implantation, angiotensin-II constricts the endometrial spiral arteries/arterioles to promote menstruation. Thus, P-LAP and APA may be involved in homeostasis in uterus via regulating glucose transport and vasoconstrictive peptides.
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Affiliation(s)
- Shigehiko Mizutani
- Daiyabilding Lady's Clinic, 3-15-1 Meieki, Nakamura-ku, Nagoya 450-0002, Japan; Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Tsurumai-cho 65, Showa-ku, Nagoya 466-8550, Japan.
| | - Kunio Matsumoto
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Yukio Kato
- Department of Molecular Pharmacotherapeutics, Faculty of Pharmacy, Kanazawa University, Kanazawa, Japan
| | - Eita Mizutani
- Daiyabilding Lady's Clinic, 3-15-1 Meieki, Nakamura-ku, Nagoya 450-0002, Japan; Department of Obstetrics and Gynecology, Bantane Hospital, Fujita Health University, 3-6-10 Odobashi, Nakagawa-ku, Nagoya 454-8509, Japan
| | - Hidesuke Mizutani
- Department of Obstetrics and Gynecology, Okazaki Municipal Hospital, 3-1 Koryuji-cho, Okazaaki 444-8553, Japan
| | - Akira Iwase
- Department of Obstetrics and Gynecology, Gunma University Graduate School of Medicine, 3-39-22, Showa-machi, Maebashi 371-8511, Japan
| | - Kiyosumi Shibata
- Department of Obstetrics and Gynecology, Bantane Hospital, Fujita Health University, 3-6-10 Odobashi, Nakagawa-ku, Nagoya 454-8509, Japan
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7
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Gianzo M, Urizar-Arenaza I, Muñoa-Hoyos I, Larreategui Z, Garrido N, Casis L, Irazusta J, Subirán N. Human sperm testicular angiotensin-converting enzyme helps determine human embryo quality. Asian J Androl 2019; 20:498-504. [PMID: 29873314 PMCID: PMC6116683 DOI: 10.4103/aja.aja_25_18] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Angiotensin-converting enzyme functions in the male reproductive system, but the extent of its function in reproduction is not fully understood. The primary objective of this work was to investigate the relationship between the testicular isoform of angiotensin-converting enzyme present in human spermatozoa and semen parameters, human embryo quality, and assisted reproduction success. A total of 81 semen samples and 635 embryos from couples undergoing oocyte donation cycles at the IVI Bilbao Clinic were analyzed. Semen parameters, embryos quality, and blastocyst development were examined according to the World Health Organization standards and the Spanish Association of Reproduction Biology Studies criteria. The percentage of testicular angiotensin-converting enzyme-positive spermatozoa and the number of molecules per spermatozoon were analyzed by flow cytometry. Both parameters were inversely correlated with human sperm motility. Higher percentages of testicular angiotensin-converting enzyme-positive spermatozoa together with fewer enzyme molecules per spermatozoon were positively correlated with better embryo quality and development. Our results suggest that embryos with a higher implantation potential come from semen samples with higher percentages of testicular angiotensin-converting enzyme-positive cells and fewer enzyme molecules per spermatozoon. Based on these findings, we propose that testicular angiotensin-converting enzyme could be used to aid embryologists in selecting better semen samples for obtaining high-quality blastocysts during in vitro fertilization procedures.
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Affiliation(s)
- Marta Gianzo
- Department of Physiology, Faculty of Medicine and Nursery, University of the Basque Country (UPV/EHU), Leioa, Biscay 48940, Spain
| | - Itziar Urizar-Arenaza
- Department of Physiology, Faculty of Medicine and Nursery, University of the Basque Country (UPV/EHU), Leioa, Biscay 48940, Spain
| | - Iraia Muñoa-Hoyos
- Department of Physiology, Faculty of Medicine and Nursery, University of the Basque Country (UPV/EHU), Leioa, Biscay 48940, Spain
| | - Zaloa Larreategui
- In Vitro Fertilization Laboratory, IVI Bilbao, Landabarri Promenade 1, Leioa, Biscay 48940, Spain
| | - Nicolás Garrido
- IVI Foundation, IVI Valencia, Local Police Square 3, Valencia 46015, Spain
| | - Luis Casis
- Department of Physiology, Faculty of Medicine and Nursery, University of the Basque Country (UPV/EHU), Leioa, Biscay 48940, Spain
| | - Jon Irazusta
- Department of Physiology, Faculty of Medicine and Nursery, University of the Basque Country (UPV/EHU), Leioa, Biscay 48940, Spain
| | - Nerea Subirán
- Department of Physiology, Faculty of Medicine and Nursery, University of the Basque Country (UPV/EHU), Leioa, Biscay 48940, Spain
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A proposed mechanism for the Berecek phenomenon with implications for cardiovascular reprogramming. ACTA ACUST UNITED AC 2018; 12:644-651. [PMID: 30220305 DOI: 10.1016/j.jash.2018.06.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 06/15/2018] [Indexed: 01/29/2023]
Abstract
Berecek et al reported in the 1990s that when spontaneously hypertensive rat (SHR) mating pairs were treated with captopril and the resulting pups were continued on the drug for 2 months followed by drug discontinuation, the pups did not develop full blown hypertension, and the cardiovascular structural changes associated with hypertension in SHR were mitigated. The offspring of the pups also displayed diminished hypertension and structural changes, suggesting that the drug therapy produced a heritable amelioration of the SHR phenotype. This observation is reviewed. The link between cellular renin angiotensin systems and epigenetic histone modification is explored, and a mechanism responsible for the observation is proposed. In any case, the observations of Berecek are sufficiently intriguing and biologically important to merit re-exploration and definitive explanation. Equally important is determining the role of renin angiotensin systems in epigenetic modification.
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9
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Rawat P, Bathla S, Baithalu R, Yadav ML, Kumar S, Ali SA, Tiwari A, Lotfan M, Naru J, Jena M, Behere P, Balhara AK, Vashisth R, Singh I, Dang A, Kaushik JK, Mohanty TK, Mohanty AK. Identification of potential protein biomarkers for early detection of pregnancy in cow urine using 2D DIGE and label free quantitation. Clin Proteomics 2016; 13:15. [PMID: 27429603 PMCID: PMC4946208 DOI: 10.1186/s12014-016-9116-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 05/27/2016] [Indexed: 12/12/2022] Open
Abstract
Background An early, reliable and noninvasive method of early pregnancy diagnosis is prerequisite for efficient reproductive management in dairy industry. The early detection of pregnancy also help in to reduce the calving interval and rebreeding time which is beneficial for industries as well as farmers. The aim of this work is to identify potential biomarker for pregnancy detection at earlier stages (16–25 days). To achieve this goal we performed DIGE and LFQ for identification of protein which has significant differential expression during pregnancy. Results DIGE experiment revealed a total of eleven differentially expressed proteins out of which nine were up regulated having fold change ≥1.5 in all time points. The LFQ data analysis revealed 195 differentially expressed proteins (DEPs) out of 28 proteins were up-regulated and 40 down regulated having significant fold change ≥1.5 and ≤0.6 respectively. Bioinformatics analysis of DEPs showed that a majority of proteins were involved in regulation of leukocyte immunity, endopeptidase inhibitor activity, regulation of peptidase activity and polysaccharide binding. Conclusion This is first report on differentially expressed protein during various time points of pregnancy in cow to our best knowledge. In our work, we identified few proteins such MBP, SERPIN, IGF which were differentially expressed and actively involved in various activities related to pregnancy such as embryo implantation, establishment and maintenance of pregnancy. Due to their involvement in these events, these can be considered as biomarker for pregnancy but further validation of is required. Electronic supplementary material The online version of this article (doi:10.1186/s12014-016-9116-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Preeti Rawat
- National Dairy Research Institute, Karnal, 132001 India
| | - Shveta Bathla
- National Dairy Research Institute, Karnal, 132001 India
| | | | | | | | | | - Anurag Tiwari
- National Dairy Research Institute, Karnal, 132001 India
| | - Masoud Lotfan
- National Dairy Research Institute, Karnal, 132001 India
| | - Jasmine Naru
- National Dairy Research Institute, Karnal, 132001 India
| | - Manoj Jena
- National Dairy Research Institute, Karnal, 132001 India
| | - Pradip Behere
- National Dairy Research Institute, Karnal, 132001 India
| | - Ashok K Balhara
- Central Institute for Research on Buffaloes, Hisar, 125001 India
| | | | - Inderjeet Singh
- Central Institute for Research on Buffaloes, Hisar, 125001 India
| | - Ajay Dang
- National Dairy Research Institute, Karnal, 132001 India
| | - Jai K Kaushik
- National Dairy Research Institute, Karnal, 132001 India
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Kurlak LO, Mistry HD, Cindrova-Davies T, Burton GJ, Broughton Pipkin F. Human placental renin-angiotensin system in normotensive and pre-eclamptic pregnancies at high altitude and after acute hypoxia-reoxygenation insult. J Physiol 2016; 594:1327-40. [PMID: 26574162 DOI: 10.1113/jp271045] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 10/24/2015] [Indexed: 12/11/2022] Open
Abstract
A functioning placental renin-angiotensin system (RAS) appears necessary for uncomplicated pregnancy and is present during placentation, which occurs under low oxygen tensions. Placental RAS is increased in pre-eclampsia (PE), characterised by placental dysfunction and elevated oxidative stress. We investigated the effect of high altitude hypoxia on the RAS and hypoxia-inducible factors (HIFs) by measuring mRNA and protein expression in term placentae from normotensive (NT) and PE women who delivered at sea level or above 3100 m, using an explant model of hypoxia-reoxygenation to assess the impact of acute oxidative stress on the RAS and HIFs. Protein levels of prorenin (P = 0.049), prorenin receptor (PRR; P = 0.0004), and angiotensin type 1 receptor (AT1R, P = 0.006) and type 2 receptor (AT2R, P = 0.002) were all significantly higher in placentae from NT women at altitude, despite mRNA expression being unaffected. However, mRNA expression of all RAS components was significantly lower in PE at altitude than at sea level, yet PRR, angiotensinogen (AGT) and AT1R proteins were all increased. The increase in transcript and protein expression of all the HIFs and NADPH oxidase 4 seen in PE compared to NT at sea level was blunted at high altitude. Experimentally induced oxidative stress stimulated AGT mRNA (P = 0.04) and protein (P = 0.025). AT1R (r = 0.77, P < 0.001) and AT2R (r = 0.81, P < 0.001) mRNA both significantly correlated with HIF-1β, whilst AT2R also correlated with HIF-1α (r = 0.512, P < 0.013). Our observations suggest that the placental RAS is responsive to changes in tissue oxygenation: this could be important in the interplay between reactive oxygen species as cell-signalling molecules for angiogenesis and hence placental development and function.
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Affiliation(s)
- Lesia O Kurlak
- Division of Obstetrics and Gynaecology, School of Medicine, University of Nottingham, City Hospital, Nottingham, UK
| | - Hiten D Mistry
- Division of Obstetrics and Gynaecology, School of Medicine, University of Nottingham, City Hospital, Nottingham, UK.,Division of Hypertension, Department of Nephrology, Hypertension and Clinical Pharmacology and Clinical Research, University of Bern, CH-3010, Berne, Switzerland
| | - Tereza Cindrova-Davies
- Centre for Trophoblast Research, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK
| | - Graham J Burton
- Centre for Trophoblast Research, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK
| | - Fiona Broughton Pipkin
- Division of Obstetrics and Gynaecology, School of Medicine, University of Nottingham, City Hospital, Nottingham, UK
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11
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Naderi MM, Borjian Boroujeni S, Sarvari A, Heidari B, Akhondi MM, Zarnani AH, Shirazi A. The Effect of Media Supplementation with Angiotensin on Developmental Competence of Ovine Embryos Derived from Vitrified-warmed Oocytes. Avicenna J Med Biotechnol 2016; 8:139-44. [PMID: 27563427 PMCID: PMC4967548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND This study was aimed to assess the effects of angiotensin II (Ang II) supplementation to the In Vitro Maturation (IVM) and In Vitro Culture (IVC) media of vitrified-warmed ovine oocytes on their developmental competence and expression of Na(+)/K(+)/ATPase in resulting embryos. METHODS The slaughterhouse-derived immature oocytes (n=1069) were randomly distributed into four experimental groups: groups I and II) IVM/IVF and IVC of fresh and vitrified oocytes without angiotensin supplementation (Control-Fresh and Control-Vit groups, respectively); group III) IVM of vitrified oocytes in the presence of Ang II followed by IVF/IVC (Vit-IVM group); and group IV) IVM/IVF of vitrified oocytes followed by IVC wherein the embryos were exposed to Ang II on day 4 of IVC (Vit-D4 group). The embryos were immunostained with primary antibodies against Na(+)/K(+)/ATPase α1 and β1 subunits. RESULTS In Vit-IVM and Vit-D4 groups, the rates of expanded and total blastocysts on day 7 as well as the proportion of blastocysts on day 8 were increased. The expression of Na(+)/K(+)/ATPase α1 and β1 subunits were positively influenced by the addition of Ang II on day 4 (Vit-D4 group). CONCLUSION The addition of Ang II to the IVM and IVC media could improve blastocysts formation in vitrified sheep oocytes. This improvement might be related to the greater expression of Na(+)/K(+)/ATPase α1 and β1 subunits when Ang II was added during IVC.
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Affiliation(s)
- Mohammad Mehdi Naderi
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Sara Borjian Boroujeni
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Ali Sarvari
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Banafsheh Heidari
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Mohammad Mehdi Akhondi
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Amir-Hassan Zarnani
- Reproductive Immunology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Abolfazl Shirazi
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran,Research Institute of Animal Embryo Technology, Shahrekord University, Shahrekord, Iran,Corresponding author: Abolfazl Shirazi, Ph.D., Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran, Tel: +98 913 1821238, Fax: +98 21 22404145, E-mail:,
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Byrne TJ. A "cure" for preeclampsia: Improving neonatal outcomes by overcoming excess fetal placental vascular resistance. Med Hypotheses 2015; 85:311-9. [PMID: 26105573 DOI: 10.1016/j.mehy.2015.06.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 03/10/2015] [Accepted: 06/02/2015] [Indexed: 02/01/2023]
Abstract
From a broad perspective there are only three arterial systems that respond to relative hypoxia with vasoconstriction. They are the placental, the pulmonic and the renal vascular beds. The renal system's adaptation to hypoxia is markedly different from the other two circulatory beds and will not be further considered here. Regional vasoconstriction is adaptive in the placenta and lung because it redirects red blood cells from areas of relative hypoxia to more oxygenated areas thereby maximizing oxygen uptake for a given cardiac output. The fetal placental and pulmonary vascular systems are unique because their smooth muscle cells have a unique and possibly identical potassium channel that responds to hypoxia by closing, thereby depolarizing the cell membrane allowing calcium ion influx and muscle contraction. It may be that a variety of initial causes of temporary or local placental hypoxia initiate a cascade of first fetal placental then maternal vasoconstriction and endothelial activation leading to the clinical syndrome we call preeclampsia. The response cascades seen in preeclampsia, which for purposes of this article I will abbreviate as (PECL), after development of widespread vasoconstriction, will also be seen to be identical or at least parallel in pulmonary hypertension (PAH). This means that some or all of the pharmacotherapies presently used, tested or considered in early PAH may also have a therapeutic effect in PECL by reducing fetal placental arterial resistance thereby increasing fetal placental flow. This would allow increased oxygen and other nutrient uptake and possibly increased fetal cardiac output in the face of reduced fetal cardiac work. This may allow a delay in delivery in which fetuses grow and are better oxygenated in preterm PECL, improving neonatal outcomes.
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Affiliation(s)
- T J Byrne
- Maternal Fetal Medicine, Harlem Hospital, 506 Lenox Avenue, New York, NY 10037, USA.
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