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Ismail N, Myint K, Khaing SL, Giribabu N, Salleh N. Cervical fluid pH, electrolytes and osmolarity changes and expression of ion transporters (ENaC, CFTR and AQP) in cervix of women with primary unexplained infertility. Mol Biol Rep 2023; 50:6729-6737. [PMID: 37382776 DOI: 10.1007/s11033-023-08555-6] [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: 10/18/2022] [Accepted: 05/30/2023] [Indexed: 06/30/2023]
Abstract
BACKGROUND Unexplained infertility could arise from a defect in the cervix. However, the contribution of abnormal cervical fluid microenvironment to this problem still needs to be identified. Therefore, this study identifies the changes in the cervical fluid microenvironment, i.e., pH, electrolytes and osmolarity as well as expression of ion transporters in the cervix including ENaC, CFTR and AQP in fertile women and in women suffering from primary unexplained infertility. METHODS Fertile women and women with unexplained infertility but having regular 28-day menstrual cycles were chosen in this study, Day-22 serum progesterone levels were determined. In the meantime, serum FSH and LH levels were determined on day 2 while, cervical flushing was performed at day 14 to analyse changes in the cervical fluid pH, osmolarity, Na+ and Cl- levels. Meanwhile, cells retrieved from cervical fluid were subjected to mRNA expression and protein distribution analysis for CFTR, AQP and ENaC by qPCR and immunofluorescence, respectively. RESULTS No significant changes in serum progesterone, FSH and LH levels were observed between the two groups. However, cervical fluid pH, osmolarity, Na+ and Cl- levels were significantly lower in primary unexplained infertile group when compared to fertile group. Expression of CFTR and AQP (AQP 1, AQP 2, AQP 5 and AQP 7) in endocervical cells was lower and expression of β-ENaC was higher in primary unexplained infertile women (p < 0.05 when compared to fertile group). CONCLUSIONS Alterations in the cervical fluid microenvironment linked to the defective ion transporter expression in the cervix might contribute towards the unfavourable condition that accounts for unexplained infertility in women.
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Affiliation(s)
- Nurain Ismail
- Department of Physiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
| | - Kyaimon Myint
- Department of Physiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
| | - Si Lay Khaing
- Department of Obstetrics & Gynaecology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
- Medical Education Department, University of Medicine, Yangon, Myanmar
| | - Nelli Giribabu
- Department of Physiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
| | - Naguib Salleh
- Department of Physiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, 50603, Malaysia.
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Muhandiram S, Dissanayake K, Orro T, Godakumara K, Kodithuwakku S, Fazeli A. Secretory Proteomic Responses of Endometrial Epithelial Cells to Trophoblast-Derived Extracellular Vesicles. Int J Mol Sci 2023; 24:11924. [PMID: 37569298 PMCID: PMC10418763 DOI: 10.3390/ijms241511924] [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: 06/21/2023] [Revised: 07/14/2023] [Accepted: 07/18/2023] [Indexed: 08/13/2023] Open
Abstract
Synchronized crosstalk between the embryo and endometrium during the periconception period is integral to pregnancy establishment. Increasing evidence suggests that the exchange of extracellular vesicles (EVs) of both embryonic and endometrial origin is a critical component of embryo-maternal communication during peri-implantation. Here, we investigated whether embryonic signals in the form of EVs can modulate the endometrial epithelial cell secretome. Receptive endometrial analog RL95-2 cells were supplemented with trophoblast analog JAr cell-derived EVs, and the secretory protein changes occurring in the RL95-2 cells were analyzed using mass spectrometry. EVs of non-trophoblastic origin (HEK 293 cells) were used as the control EV source to supplement endometrial cells. Trophoblast cell-derived EVs enriched endometrial epithelial cell secretions with proteins that support embryo development, attachment, or implantation, whereas control EVs were unable to induce the same effect. The present study suggests that embryonic signals in the form of EVs may prime receptive endometrial epithelial cells to enrich their secretory proteome with critical proteomic molecules with functional importance for periconception milieu formation.
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Affiliation(s)
- Subhashini Muhandiram
- Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 62, 51006 Tartu, Estonia; (S.M.); (K.D.); (T.O.); (K.G.); (S.K.)
| | - Keerthie Dissanayake
- Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 62, 51006 Tartu, Estonia; (S.M.); (K.D.); (T.O.); (K.G.); (S.K.)
- Department of Pathophysiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila St. 14B, 50411 Tartu, Estonia
- Department of Anatomy, Faculty of Medicine, University of Peradeniya, Kandy 20400, Sri Lanka
| | - Toomos Orro
- Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 62, 51006 Tartu, Estonia; (S.M.); (K.D.); (T.O.); (K.G.); (S.K.)
| | - Kasun Godakumara
- Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 62, 51006 Tartu, Estonia; (S.M.); (K.D.); (T.O.); (K.G.); (S.K.)
| | - Suranga Kodithuwakku
- Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 62, 51006 Tartu, Estonia; (S.M.); (K.D.); (T.O.); (K.G.); (S.K.)
- Department of Animal Science, Faculty of Agriculture, University of Peradeniya, Kandy 20400, Sri Lanka
| | - Alireza Fazeli
- Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 62, 51006 Tartu, Estonia; (S.M.); (K.D.); (T.O.); (K.G.); (S.K.)
- Department of Pathophysiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila St. 14B, 50411 Tartu, Estonia
- Academic Unit of Reproductive and Developmental Medicine, Department of Oncology and Metabolism, Medical School, University of Sheffield, Sheffield S10 2TN, UK
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Li Y, Martin TE, Hancock JM, Li R, Viswanathan S, Lydon JP, Zheng Y, Ye X. Visualization of preimplantation uterine fluid absorption in mice using Alexa Fluor™ 488 Hydrazide†. Biol Reprod 2023; 108:204-217. [PMID: 36308434 PMCID: PMC9930399 DOI: 10.1093/biolre/ioac198] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 10/06/2022] [Accepted: 10/24/2022] [Indexed: 11/12/2022] Open
Abstract
Uterine fluid plays important roles in supporting early pregnancy events and its timely absorption is critical for embryo implantation. In mice, its volume is maximum on day 0.5 post-coitum (D0.5) and approaches minimum upon embryo attachment ~D4.0. Its secretion and absorption in ovariectomized rodents were shown to be promoted by estrogen and progesterone (P4), respectively. The temporal mechanisms in preimplantation uterine fluid absorption remain to be elucidated. We have established an approach using intraluminally injected Alexa Fluor™ 488 Hydrazide (AH) in preimplantation control (RhoAf/f) and P4-deficient RhoAf/fPgrCre/+ mice. In control mice, bulk entry (seen as smeared cellular staining) via uterine luminal epithelium (LE) decreases from D0.5 to D3.5. In P4-deficient RhoAf/fPgrCre/+ mice, bulk entry on D0.5 and D3.5 is impaired. Exogenous P4 treatment on D1.5 and D2.5 increases bulk entry in D3.5 P4-deficient RhoAf/fPgrCre/+ LE, while progesterone receptor (PR) antagonist RU486 treatment on D1.5 and D2.5 diminishes bulk entry in D3.5 control LE. The abundance of autofluorescent apical fine dots, presumptively endocytic vesicles to reflect endocytosis, in the LE cells is generally increased from D0.5 to D3.5 but its regulation by exogenous P4 or RU486 is not obvious under our experimental setting. In the glandular epithelium (GE), bulk entry is rarely observed and green cellular dots do not show any consistent differences among all the investigated conditions. This study demonstrates the dominant role of LE but not GE, the temporal mechanisms of bulk entry and endocytosis in the LE, and the inhibitory effects of P4-deficiency and RU486 on bulk entry in the LE in preimplantation uterine fluid absorption.
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Affiliation(s)
- Yuehuan Li
- Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
| | - Taylor Elijah Martin
- Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
- Interdisciplinary Toxicology Program, University of Georgia, Athens, Georgia, USA
| | - Jonathan Matthew Hancock
- Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
- Interdisciplinary Toxicology Program, University of Georgia, Athens, Georgia, USA
| | - Rong Li
- Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
- Interdisciplinary Toxicology Program, University of Georgia, Athens, Georgia, USA
| | - Suvitha Viswanathan
- Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
| | - John P Lydon
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, USA
| | - Yi Zheng
- Division of Experimental Hematology and Cancer Biology, Children’s Hospital Research Foundation, Cincinnati, Ohio, USA
| | - Xiaoqin Ye
- Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
- Interdisciplinary Toxicology Program, University of Georgia, Athens, Georgia, USA
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Hou Z, He A, Zhang Q, Liu N, Liu D, Li Y, Xu B, Wang Y, Li S, Tian F, Liao T, Zhang Y, Cao J, Cao E, Li Y. Endometrial fluid aspiration immediately prior to embryo transfer does not affect IVF/vitrified-warmed embryo transfer outcomes - a prospective matched cohort study. Reprod Biomed Online 2022; 44:486-493. [PMID: 35177340 DOI: 10.1016/j.rbmo.2021.11.004] [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: 06/22/2021] [Revised: 10/21/2021] [Accepted: 11/01/2021] [Indexed: 11/29/2022]
Abstract
RESEARCH QUESTION Does the endometrial aspiration of ultrasound-invisible fluid immediately preceding embryo transfer affect IVF/vitrified-warmed embryo transfer outcomes? DESIGN A prospective matched cohort study was conducted in 96 women and 96 control participants to assess the effect on pregnancy outcomes of endometrial aspiration performed immediately before embryo transfer. This study was carried out at a university-affiliated assisted reproductive medical centre between January 2019 and December 2019. Patients were divided into two groups. The EA group had cycles with endometrial aspiration of ultrasound-invisible fluid performed before embryo transfer and the non-EA group featured cycles without endometrial aspiration. The EA group was matched by propensity score with the non-EA group in a 1:1 ratio. The EA group consisted of 99 participants before and 96 participants after propensity score matching. There were 203 and 96 participants in the non-EA group before and after propensity score matching. RESULTS No significant differences were detected in the baseline characteristics and cycle characteristics of the EA and non-EA groups. No significant between-group differences were found in reproductive outcomes in the overall population. Subgroup analysis of blastocyst transfer cycles showed the implantation rate was significantly higher in the EA group (61 women per group, 57.1% versus 40.8%, relative risk 1.40, 95% confidence interval 1.04-1.88; P = 0.022). Live birth rate, clinical pregnancy rate, ongoing pregnancy rate and multiple pregnancy rate were not different among the groups. CONCLUSIONS Endometrial aspiration immediately preceding embryo transfer does not affect IVF/vitrified-warmed embryo transfer outcomes. Interestingly, it might improve the vitrified-warmed blastocyst implantation rate. Randomized controlled trials are needed to confirm this result.
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Affiliation(s)
- Zhaojuan Hou
- Department of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha City Hunan Province, P.R. China; Clinical Research Center For Women's Reproductive Health In Hunan Province, Changsha City Hunan Province, P.R. China
| | - Aihua He
- Department of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha City Hunan Province, P.R. China; Clinical Research Center For Women's Reproductive Health In Hunan Province, Changsha City Hunan Province, P.R. China
| | - Qiong Zhang
- Department of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha City Hunan Province, P.R. China; Clinical Research Center For Women's Reproductive Health In Hunan Province, Changsha City Hunan Province, P.R. China
| | - Nenghui Liu
- Department of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha City Hunan Province, P.R. China; Clinical Research Center For Women's Reproductive Health In Hunan Province, Changsha City Hunan Province, P.R. China
| | - Donge Liu
- Department of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha City Hunan Province, P.R. China; Clinical Research Center For Women's Reproductive Health In Hunan Province, Changsha City Hunan Province, P.R. China
| | - Yumei Li
- Department of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha City Hunan Province, P.R. China; Clinical Research Center For Women's Reproductive Health In Hunan Province, Changsha City Hunan Province, P.R. China
| | - Bin Xu
- Department of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha City Hunan Province, P.R. China; Clinical Research Center For Women's Reproductive Health In Hunan Province, Changsha City Hunan Province, P.R. China
| | - Yonggang Wang
- Department of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha City Hunan Province, P.R. China; Clinical Research Center For Women's Reproductive Health In Hunan Province, Changsha City Hunan Province, P.R. China
| | - Shuyi Li
- Department of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha City Hunan Province, P.R. China; Clinical Research Center For Women's Reproductive Health In Hunan Province, Changsha City Hunan Province, P.R. China
| | - Fen Tian
- Department of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha City Hunan Province, P.R. China; Clinical Research Center For Women's Reproductive Health In Hunan Province, Changsha City Hunan Province, P.R. China
| | - Tingting Liao
- Department of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha City Hunan Province, P.R. China; Clinical Research Center For Women's Reproductive Health In Hunan Province, Changsha City Hunan Province, P.R. China
| | - Yeqing Zhang
- Department of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha City Hunan Province, P.R. China; Clinical Research Center For Women's Reproductive Health In Hunan Province, Changsha City Hunan Province, P.R. China
| | - Jianyun Cao
- Department of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha City Hunan Province, P.R. China; Clinical Research Center For Women's Reproductive Health In Hunan Province, Changsha City Hunan Province, P.R. China
| | - Exiang Cao
- Department of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha City Hunan Province, P.R. China; Clinical Research Center For Women's Reproductive Health In Hunan Province, Changsha City Hunan Province, P.R. China
| | - Yanping Li
- Department of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha City Hunan Province, P.R. China; Clinical Research Center For Women's Reproductive Health In Hunan Province, Changsha City Hunan Province, P.R. China.
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5
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Muter J, Kong CS, Brosens JJ. The Role of Decidual Subpopulations in Implantation, Menstruation and Miscarriage. FRONTIERS IN REPRODUCTIVE HEALTH 2021; 3:804921. [PMID: 36303960 PMCID: PMC9580781 DOI: 10.3389/frph.2021.804921] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 12/07/2021] [Indexed: 12/13/2022] Open
Abstract
In each menstrual cycle, the endometrium becomes receptive to embryo implantation while preparing for tissue breakdown and repair. Both pregnancy and menstruation are dependent on spontaneous decidualization of endometrial stromal cells, a progesterone-dependent process that follows rapid, oestrogen-dependent proliferation. During the implantation window, stromal cells mount an acute stress response, which leads to the emergence of functionally distinct decidual subsets, reflecting the level of replication stress incurred during the preceding proliferative phase. Progesterone-dependent, anti-inflammatory decidual cells (DeC) form a robust matrix that accommodates the conceptus whereas pro-inflammatory, progesterone-resistant stressed and senescent decidual cells (senDeC) control tissue remodelling and breakdown. To execute these functions, each decidual subset engages innate immune cells: DeC partner with uterine natural killer (uNK) cells to eliminate senDeC, while senDeC co-opt neutrophils and macrophages to assist with tissue breakdown and repair. Thus, successful transformation of cycling endometrium into the decidua of pregnancy not only requires continuous progesterone signalling but dominance of DeC over senDeC, aided by recruitment and differentiation of circulating NK cells and bone marrow-derived decidual progenitors. We discuss how the frequency of cycles resulting in imbalanced decidual subpopulations may determine the recurrence risk of miscarriage and highlight emerging therapeutic strategies.
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Affiliation(s)
- Joanne Muter
- Division of Biomedicine, Warwick Medical School, University of Warwick, Coventry, United Kingdom
- Tommy's National Centre for Miscarriage Research, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, United Kingdom
- *Correspondence: Joanne Muter
| | - Chow-Seng Kong
- Division of Biomedicine, Warwick Medical School, University of Warwick, Coventry, United Kingdom
| | - Jan J. Brosens
- Division of Biomedicine, Warwick Medical School, University of Warwick, Coventry, United Kingdom
- Tommy's National Centre for Miscarriage Research, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, United Kingdom
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Karim K, Giribabu N, Salleh N. Marantodes pumilum (blume) Kuntze (Kacip Fatimah) leaves aqueous extract prevents downregulation of Wnt/β-catenin pathway and upregulation of apoptosis in osteoblasts of estrogen-deficient, diabetes-induced rats. JOURNAL OF ETHNOPHARMACOLOGY 2021; 280:114236. [PMID: 34044074 DOI: 10.1016/j.jep.2021.114236] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 05/02/2021] [Accepted: 05/20/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Marantodes pumilum (Blume) Kuntze has been claimed to be beneficial in protecting the bone against loss in post-menopausal women. In view of increased incidence of diabetes mellitus (DM) in post-menopausal period, M. pumilum ability to overcome the detrimental effect of estrogen-deficiency and DM on the bones were identified. AIM OF THE STUDY To identify the mechanisms underlying protective effect of MPLA on the bone in estrogen-deficient, diabetic condition. METHODS Adult female, estrogen-deficient, diabetic rats (225 ± 10 g) were divided into untreated group and treated with M. pumilum leaf aqueous extract (MPLA) (50 mg/kg/day and 100 mg/kg/day) and estrogen for 28 days (n = 6 per group). Fasting blood glucose (FBG) levels were weekly monitored and at the end of treatment, rats were sacrificed and femur bones were harvested. Bone collagen distribution was observed by Masson's trichome staining. Levels of bone osteoblastogenesis, apoptosis and proliferative markers were evaluated by Realtime PCR, Western blotting, immunofluorescence and immunohistochemistry. RESULTS MPLA treatment was able to ameliorate the increased in FBG levels in estrogen deficient, diabetic rats. In these rats, decreased bone collagen content, expression level of osteoblastogenesis markers (Wnt3a, β-catenin, Frizzled, Dvl and LRP-5) and proliferative markers (PCNA and c-Myc) and increased expression of anti-osteoblastogenesis marker (Gsk-3β) and apoptosis markers (Caspase-3, Caspase-9 and Bax) but not Bcl-2 were ameliorated. Effects of 100 mg/kg/day MPLA were greater than estrogen. CONCLUSION MPLA was able to protect against bone loss, thus making it a promising agent for the treatment of osteoporosis in women with estrogen deficient, diabetic condition.
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Affiliation(s)
- Kamarulzaman Karim
- Department of Physiology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Nelli Giribabu
- Department of Physiology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Naguib Salleh
- Department of Physiology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
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Silva FACC, da Silva GF, Vieira BS, Neto AL, Rocha CC, Lo Turco EG, Nogueira GP, Pugliesi G, Binelli M. Peri-estrus ovarian, uterine, and hormonal variables determine the uterine luminal fluid metabolome in beef heifers. Biol Reprod 2021; 105:1140-1153. [PMID: 34350935 DOI: 10.1093/biolre/ioab149] [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: 05/07/2021] [Revised: 06/25/2021] [Accepted: 08/04/2021] [Indexed: 11/12/2022] Open
Abstract
In cattle, uterine luminal fluid (ULF) is the main source of molecules that support embryo development and survival during the peri-implantation period. Our overarching hypothesis is that peri-estrus changes in uterine function, including ULF accumulation and absorption, are uneven among individuals, and it affects ULF composition and fertility. Our objectives were (1) to characterize temporal and spatial changes in ULF volume, endometrial and luteal blood perfusion, endometrial and luteal size, and circulating progesterone concentrations during the peri-estrus period in beef heifers and, (2) to associate such changes with the metabolite composition in the ULF, four days after estrus (d 0). Fourteen B. indicus heifers that presented a PGF2α responsive CL received 500 μg PGF2α analog i.m. and were examined daily by rectal B-mode and pulse-wave color-Doppler ultrasonography until the fifth day after estrus (d 5). The composition of the ULF was analyzed by targeted mass spectrometry on d 4. Multivariate analyses clustered heifers according to ovarian, uterine, and hormonal variables in clusters A (n = 5) and B (n = 8 heifers). Concentrations of Pro, Ala, Leu, Gly, Val, Lys, Ile, Phe, Asp, Orn, Tyr, Arg, Trp, Suc, Cit, ADMA, the sum of essential Amino Acids (AA), sum of non-essential AA, sum of aromatic AA, and total AA were greater in cluster A (FDR ≤ 0.05). ULF volume dynamics and uterine, ovarian, and hormonal variables during the peri-estrus period presented a concerted variation among heifers within clusters, which was associated with the ULF composition four days after estrus.
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Affiliation(s)
- Felipe A C C Silva
- Department of Animal Sciences, University of Florida, Gainesville, FL, USA
| | - Gabriela F da Silva
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Sciences, University of Sao Paulo, Pirassununga, SP, Brazil
| | - Bruna S Vieira
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Sciences, University of Sao Paulo, Pirassununga, SP, Brazil
| | - Adomar L Neto
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Sciences, University of Sao Paulo, Pirassununga, SP, Brazil
| | - Cecilia C Rocha
- Department of Animal Sciences, University of Florida, Gainesville, FL, USA
| | - Edson G Lo Turco
- Department of Surgery, Division of Urology, Federal University of Sao Paulo, SP, Brazil
| | - Guilherme P Nogueira
- School of Veterinary Medicine, Sao Paulo State University, Aracatuba, SP, Brazil
| | - Guilherme Pugliesi
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Sciences, University of Sao Paulo, Pirassununga, SP, Brazil
| | - Mario Binelli
- Department of Animal Sciences, University of Florida, Gainesville, FL, USA
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8
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Long Y, Wang YC, Yuan DZ, Dai XH, Liao LC, Zhang XQ, Zhang LX, Ma YD, Lei Y, Cui ZH, Zhang JH, Nie L, Yue LM. GLUT4 in Mouse Endometrial Epithelium: Roles in Embryonic Development and Implantation. Front Physiol 2021; 12:674924. [PMID: 34248664 PMCID: PMC8267529 DOI: 10.3389/fphys.2021.674924] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 04/23/2021] [Indexed: 12/21/2022] Open
Abstract
GLUT4 is involved in rapid glucose uptake among various kinds of cells to contribute to glucose homeostasis. Prior data have reported that aberrant glucose metabolism by GLUT4 dysfunction in the uterus could be responsible for infertility and increased miscarriage. However, the expression and precise functions of GLUT4 in the endometrium under physiological conditions remain unknown or controversial. In this study, we observed that GLUT4 exhibits a spatiotemporal expression in mouse uterus on pregnant days 1–4; its expression especially increased on pregnant day 4 during the window of implantation. We also determined that estrogen, in conjunction with progesterone, promotes the expression of GLUT4 in the endometrial epithelium in vivo or in vitro. GLUT4 is an important transporter that mediates glucose transport in endometrial epithelial cells (EECs) in vitro or in vivo. In vitro, glucose uptake decreased in mouse EECs when the cells were treated with GLUT4 small interfering RNA (siRNA). In vivo, the injection of GLUT4-siRNA into one side of the mouse uterine horns resulted in an increased glucose concentration in the uterine fluid on pregnant day 4, although it was still lower than in blood, and impaired endometrial receptivity by inhibiting pinopode formation and the expressions of leukemia inhibitory factor (LIF) and integrin ανβ3, finally affecting embryonic development and implantation. Overall, the obtained results indicate that GLUT4 in the endometrial epithelium affects embryo development by altering glucose concentration in the uterine fluid. It can also affect implantation by impairing endometrial receptivity due to dysfunction of GLUT4.
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Affiliation(s)
- Yun Long
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China.,Department of Physiology, Chongqing Three Gorges Medical College, Chongqing, China
| | - Yi-Cheng Wang
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Dong-Zhi Yuan
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Xin-Hua Dai
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Lin-Chuan Liao
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Xue-Qin Zhang
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Li-Xue Zhang
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Yong-Dan Ma
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Yi Lei
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Zhi-Hui Cui
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Jin-Hu Zhang
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Li Nie
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Li-Min Yue
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
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9
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Salleh N, Ismail N, Nelli G, Myint K, Khaing SL. Changes in fluid composition and expression of ion channels in rat cervix during different phases of the estrus cycle. Biotech Histochem 2021; 97:53-66. [PMID: 33827344 DOI: 10.1080/10520295.2021.1899285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
We investigated changes in the composition of cervical fluid at different phases of the female rat reproductive cycle. Fluid was collected from the cervix of rats by direct cervical flushing and analyzed for changes in Na+ and Cl- content and osmolarity. Following sacrifice, the cervix was harvested and expressions of mRNA and protein for ENaCs, CFTR and AQPs were measured using qPCR and immunohistochemistry, respectively. Cervical fluid Na+ and Cl- content was high during estrus, but osmolarity was high during metestrus and diestrus. Expressions of CFTR, AQP-1 and AQP-2 in the cervix were high during estrus, but low during diestrus. Expression of ENaC (α, β, γ), AQP-5 and AQP-7 was high during metestrus and diestrus and low during estrus. Changes in expression of ion channels in the cervix could explain changes in cervical fluid composition during the estrus cycle phases that could affect female fertility.
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Affiliation(s)
- Naguib Salleh
- Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Nurain Ismail
- Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Giribabu Nelli
- Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Kyaimon Myint
- Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Si Lay Khaing
- Department of Obstetrics & Gynecology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.,Medical Education Department, University of Medicine, Yangon, Myanmar
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10
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Palagiano A, Cozzolino M, Ubaldi FM, Palagiano C, Coccia ME. Effects of Hydrosalpinx on Endometrial Implantation Failures: Evaluating Salpingectomy in Women Undergoing in vitro fertilization. REVISTA BRASILEIRA DE GINECOLOGIA E OBSTETRÍCIA 2021; 43:304-310. [PMID: 33601465 PMCID: PMC10183881 DOI: 10.1055/s-0040-1722155] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Hydrosalpinx is a disease characterized by the obstruction of the salpinx, with progressive accumulation in the shape of a fluid-filled sac at the distal part of the tuba uterina, and closed to the ovary. Women with hydrosalpinges have lower implantation and pregnancy rates due to a combination of mechanical and chemical factors thought to disrupt the endometrial environment. Evidence suggests that the presence of hydrosalpinx reduces the rate of pregnancy with assisted reproductive technology. The main aim of the present is review to make an overview of the possible effects of hydrosalpinx on in vitro fertilization (IVF). We conducted a literature search on the PubMed, Ovid MEDLINE, and Google Scholar data bases regarding hydrosalpinx and IVF outcomes. Hydrosalpinx probably has a direct toxic effect on sperm motility and on the embryos. In addition, the increasing liquid inside the salpinges could alter the mechanisms of endometrial receptivity. The window of endometrial receptivity is essential in the implantation of blastocysts, and it triggers multiple reactions arising from the endometrium as well as the blastocysts. Hydrosalpinx could influence the expression of homeobox A10 (HOXA10) gene, which plays an essential role in directing embryonic development and implantation. Salpingectomy restores the endometrial expression of HOXA10; therefore, it may be one mechanism by which tubal removal could result in improved implantation rates in IVF. In addition, salpingectomy does not affect the ovarian response, nor reduces the antral follicle count. Further studies are needed to establish the therapeutic value of fluid aspiration under ultrasonographic guidance, during or after oocyte retrieval, in terms of pregnancy rate and ongoing pregnancy.
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Affiliation(s)
- Antonio Palagiano
- Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania Luigi Vanvitelli, Napoli, Italy
| | - Mauro Cozzolino
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, Connecticut, United States.,Universidad Rey Juan Carlos, Madrid, Spain.,IVIRMA, IVI Foundation, Valencia, Spain
| | | | | | - Maria Elisabetta Coccia
- Department of Biomedical, Experimental and Clinical Sciences, Division of Obstetrics and Gynecology, Università degli Studi di Firenze, Azienda Ospedaliero Universitaria Careggi, Firenze, Italy
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11
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Flores D, Madhavan M, Wright S, Arora R. Mechanical and signaling mechanisms that guide pre-implantation embryo movement. Development 2020; 147:dev193490. [PMID: 33158924 DOI: 10.1242/dev.193490] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 10/29/2020] [Indexed: 01/17/2023]
Abstract
How a mammalian embryo determines and arrives at its attachment site has been studied for decades, but our understanding of this process is far from complete. Using confocal imaging and image analysis, we evaluate embryo location along the longitudinal oviductal-cervical axis of murine uteri. Our analysis reveals three distinct pre-implantation phases: embryo entry, unidirectional movement of embryo clusters and bidirectional scattering and spacing of embryos. We show that unidirectional clustered movement is facilitated by a mechanical stimulus of the embryo and is regulated by adrenergic uterine smooth muscle contractions. Embryo scattering, on the other hand, depends on embryo-uterine communication reliant on the LPAR3 signaling pathway and is independent of adrenergic muscle contractions. Finally, we demonstrate that uterine implantation sites in mice are neither random nor predetermined but are guided by the number of embryos entering the uterine lumen. These studies have implications for understanding how embryo-uterine communication is key to determining an optimal implantation site necessary for the success of a pregnancy.
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Affiliation(s)
- Diana Flores
- Department of Obstetrics, Gynecology and Reproductive Biology, Michigan State University East Lansing, MI 48824, USA
- Institute for Quantitative Health Science and Engineering, Michigan State University East Lansing, MI 48824, USA
| | - Manoj Madhavan
- Department of Biomedical Engineering, Michigan State University East Lansing, MI 48824, USA
- Institute for Quantitative Health Science and Engineering, Michigan State University East Lansing, MI 48824, USA
| | - Savannah Wright
- Institute for Quantitative Health Science and Engineering, Michigan State University East Lansing, MI 48824, USA
| | - Ripla Arora
- Department of Obstetrics, Gynecology and Reproductive Biology, Michigan State University East Lansing, MI 48824, USA
- Department of Biomedical Engineering, Michigan State University East Lansing, MI 48824, USA
- Institute for Quantitative Health Science and Engineering, Michigan State University East Lansing, MI 48824, USA
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12
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Mokhtar MH, Giribabu N, Salleh N. Testosterone Reduces Tight Junction Complexity and Down-regulates Expression of Claudin-4 and Occludin in the Endometrium in Ovariectomized, Sex-steroid Replacement Rats. In Vivo 2020; 34:225-231. [PMID: 31882482 DOI: 10.21873/invivo.11764] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 11/07/2019] [Accepted: 11/12/2019] [Indexed: 12/26/2022]
Abstract
BACKGROUND/AIM It was hypothesized that endometrial tight junction morphology and expression of tight junction proteins i.e., claudin-4 and occludin in the uterus, are affected by testosterone. Therefore, the effects of testosterone on these parameters in the uterus during receptivity period were investigated. MATERIALS AND METHODS Ovariectomized adult female rats were given testosterone (1 mg/kg/day) alone or in combination with flutamide or finasteride between days 6 to 8 of sex-steroid replacement treatment, which was considered the period of uterine receptivity. Ultramorphology of tight junctions was visualized by transmission electron microscopy while distribution and expression of claudin-4 and occludin were examined by immunofluorescence and real-time polymerase chain reaction respectively. RESULTS Administration of testosterone caused loss of tight junction complexity and down-regulated expression of claudin-4 and occludin in the uterus. CONCLUSION Decreased endometrial tight junction complexity and expression of claudin-4 and occludin in the uterus during receptivity period by testosterone may interfere with embryo attachment and subsequent implantation.
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Affiliation(s)
- Mohd Helmy Mokhtar
- Department of Physiology, Faculty of Medicine, University Kebangsaan Malaysia (UKM), Kuala Lumpur, Malaysia
| | - Nelli Giribabu
- Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Naguib Salleh
- Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
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13
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Mokhtar MH, Giribabu N, Salleh N. Testosterone Decreases the Number of Implanting Embryos, Expression of Pinopode and L-selectin Ligand (MECA-79) in the Endometrium of Early Pregnant Rats. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17072293. [PMID: 32235321 PMCID: PMC7177729 DOI: 10.3390/ijerph17072293] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 03/23/2020] [Accepted: 03/23/2020] [Indexed: 12/25/2022]
Abstract
Testosterone could have adverse effect on fertility. In this study, we hypothesized that this hormone could reduce the number of embryo implantations via affecting the normal endometrium ultrastructure and expression of endometrial proteins involved in implantation. Therefore, the aims were to identify these adverse testosterone effects. Methods: Intact pregnant rats were given 250 or 500 µg/kg/day testosterone for three days, beginning from day 1 of pregnancy. Rats were euthanized either at day 4 to analyze the ultra-structural changes in the endometrium and expression and distribution of MECA-79 protein, or at day 6 to determine the number of implantation sites. Results: Administration of 500 µg/kg/day testosterone suppresses endometrial pinopodes development and down-regulates expression and distribution of MECA-79 protein in the uterus. In addition, the number of implantation sites were markedly decreased. Conclusions: Changes in endometrial ultrastructure and expression of implantation protein in the endometrium in early pregnancy period could be the reason for failure of embryo implantation under testosterone influence.
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Affiliation(s)
- Mohd Helmy Mokhtar
- Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia;
| | - Nelli Giribabu
- Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia;
| | - Naguib Salleh
- Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia;
- Correspondence: ; Tel.: +603-79677532
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14
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Ye X. Uterine Luminal Epithelium as the Transient Gateway for Embryo Implantation. Trends Endocrinol Metab 2020; 31:165-180. [PMID: 31866217 PMCID: PMC6983336 DOI: 10.1016/j.tem.2019.11.008] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 11/16/2019] [Accepted: 11/18/2019] [Indexed: 12/18/2022]
Abstract
The uterine luminal epithelium (LE) is the first maternal contact for an implanting embryo. Intrauterine fluid resorption, cessation of LE proliferation and apoptosis, and LE structural changes are prerequisites for establishing transient uterine receptivity for embryo implantation. Vesicle trafficking in the LE and receptor-mediated paracrine and autocrine mechanisms are crucial both for LE preparation and LE communications with the embryo and stroma during the initiation of embryo implantation. This review mainly covers recent in vivo studies in LE of mouse models from 0.5 days post-coitus (D0.5) to ∼D4 20 h when the trophoblasts pass through the LE layer for embryo implantation. The review is organized into three interconnected sections: preimplantation LE preparation for embryo attachment, embryo-LE communications, and LE-stroma communications.
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Affiliation(s)
- Xiaoqin Ye
- Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA; Interdisciplinary Toxicology Program, University of Georgia, Athens, GA 30602, USA.
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15
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Swelum AAA, Saadeldin IM, Abdelnour SA, Ba-Awadh H, Abd El-Hack ME, Sheiha AM. Relationship between concentrations of macro and trace elements in serum and follicular, oviductal, and uterine fluids of the dromedary camel (Camelus dromedarius). Trop Anim Health Prod 2019; 52:1315-1324. [PMID: 31760562 DOI: 10.1007/s11250-019-02137-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 10/25/2019] [Indexed: 12/24/2022]
Abstract
This study aimed at investigating the relationship between concentrations of macro and trace elements in blood serum, and fluids from small and large follicles (SFF and LFF, respectively), oviduct (OF), and uterus (UF) of female dromedary camels. Fluids from small (2-6 mm) and large follicles (7-20 mm), oviduct and uterus, and blood samples were collected from 19 camels. The results indicated that the concentrations of serum Mg, Fe, and Mn were significantly higher than their follicular fluid, OF, and UF concentrations. Levels of Zn, Fe, Cu, Cr, and Mn were significantly higher in SFF than in LFF. Se and Mo concentrations were higher in LFF. Co concentration was lower in serum than in reproductive tract fluids. Cr concentration was higher in UF and OF than in the serum, SFF, and LFF. High Ca concentration was observed for serum and SFF, followed by LFF. The concentration of Na was about 1.18-fold higher in SFF than in serum, OF, and LFF, and approximately 4.1-fold higher in serum than in UF. K was present in higher concentration in SFF than in serum and LFF; however, its concentration was low in UF and OF. In conclusion, this study shows the concentrations of certain elements in small and large follicular, uterine, and oviductal fluids, which may be low or high depending on their function in the development and growth of follicles. This information can support the development of new media for in vitro oocyte maturation and fertilization of female camels.
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Affiliation(s)
- Ayman Abdel-Aziz Swelum
- Department of Animal Production, College of Food and Agricultural Sciences, King Saud University, P.O Box 2460, Riyradh, 11451, Kingdom of Saudi Arabia. .,Department of Theriogenology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt.
| | - Islam M Saadeldin
- Department of Theriogenology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt. .,Physiology Department, Faculty of veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt.
| | - Sameh A Abdelnour
- Animal Production Department, Faculty of Agriculture, Zagazig University, Zagazig, 44511, Egypt
| | - Hani Ba-Awadh
- Department of Animal Production, College of Food and Agricultural Sciences, King Saud University, P.O Box 2460, Riyradh, 11451, Kingdom of Saudi Arabia
| | | | - Asmaa M Sheiha
- Animal Production Department, Faculty of Agriculture, Zagazig University, Zagazig, 44511, Egypt
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16
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Zeng S, Ulbrich SE, Bauersachs S. Spatial organization of endometrial gene expression at the onset of embryo attachment in pigs. BMC Genomics 2019; 20:895. [PMID: 31752681 PMCID: PMC6873571 DOI: 10.1186/s12864-019-6264-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 11/05/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND During the preimplantation phase in the pig, the conceptus trophoblast elongates into a filamentous form and secretes estrogens, interleukin 1 beta 2, interferons, and other signaling molecules before attaching to the uterine epithelium. The processes in the uterine endometrium in response to conceptus signaling are complex. Thus, the objective of this study was to characterize transcriptome changes in porcine endometrium during the time of conceptus attachment considering the specific localization in different endometrial cell types. RESULTS Low-input RNA-sequencing was conducted for the main endometrial compartments, luminal epithelium (LE), glandular epithelium (GE), blood vessels (BV), and stroma. Samples were isolated from endometria collected on Day 14 of pregnancy and the estrous cycle (each group n = 4) by laser capture microdissection. The expression of 12,000, 11,903, 11,094, and 11,933 genes was detectable in LE, GE, BV, and stroma, respectively. Differential expression analysis was performed between the pregnant and cyclic group for each cell type as well as for a corresponding dataset for complete endometrium tissue samples. The highest number of differentially expressed genes (DEGs) was found for LE (1410) compared to GE, BV, and stroma (800, 1216, and 384). For the complete tissue, 3262 DEGs were obtained. The DEGs were assigned to Gene Ontology (GO) terms to find overrepresented functional categories and pathways specific for the individual endometrial compartments. GO classification revealed that DEGs in LE were involved in 'biosynthetic processes', 'related to ion transport', and 'apoptotic processes', whereas 'cell migration', 'cell growth', 'signaling', and 'metabolic/biosynthetic processes' categories were enriched for GE. For blood vessels, categories such as 'focal adhesion', 'actin cytoskeleton', 'cell junction', 'cell differentiation and development' were found as overrepresented, while for stromal samples, most DEGs were assigned to 'extracellular matrix', 'gap junction', and 'ER to Golgi vesicles'. CONCLUSIONS The localization of differential gene expression to different endometrial cell types provided a significantly improved view on the regulation of biological processes involved in conceptus implantation, such as the control of uterine fluid secretion, trophoblast attachment, growth regulation by Wnt signaling and other signaling pathways, as well as the modulation of the maternal immune system.
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Affiliation(s)
- Shuqin Zeng
- Genetics and Functional Genomics, Clinic of Reproductive Medicine, Department for Farm Animals, Vetsuisse Faculty, University of Zurich, Eschikon 27 AgroVet-Strickhof, Zurich, Switzerland
- Animal Physiology, Institute of Agricultural Sciences, ETH Zurich, Lindau, ZH 8315 Switzerland
| | - Susanne E. Ulbrich
- Animal Physiology, Institute of Agricultural Sciences, ETH Zurich, Lindau, ZH 8315 Switzerland
| | - Stefan Bauersachs
- Genetics and Functional Genomics, Clinic of Reproductive Medicine, Department for Farm Animals, Vetsuisse Faculty, University of Zurich, Eschikon 27 AgroVet-Strickhof, Zurich, Switzerland
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17
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Skowronska A, Tanski D, Jaskiewicz L, Skowronski MT. Modulation by steroid hormones and other factors on the expression of aquaporin-1 and aquaporin-5. VITAMINS AND HORMONES 2019; 112:209-242. [PMID: 32061342 DOI: 10.1016/bs.vh.2019.08.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- A Skowronska
- Department of Human Physiology, School of Medicine, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland.
| | - D Tanski
- Department of Anatomy and Animal Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - L Jaskiewicz
- Department of Human Physiology, School of Medicine, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - M T Skowronski
- Veterinary Center, University of Nicolaus Copernicus, Torun, Poland
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18
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Xu JW, Gao DD, Peng L, Qiu ZE, Ke LJ, Zhu YX, Zhang YL, Zhou WL. The gasotransmitter hydrogen sulfide inhibits transepithelial anion secretion of pregnant mouse endometrial epithelium. Nitric Oxide 2019; 90:37-46. [PMID: 31175932 DOI: 10.1016/j.niox.2019.05.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 05/24/2019] [Accepted: 05/29/2019] [Indexed: 01/08/2023]
Abstract
Endometrial epithelium exhibits a robust ion transport activity required for dynamical regulation of uterine fluid environment and thus embryo implantation. However, there still lacks a thorough understanding of the ion transport processes and regulatory mechanism in peri-implantation endometrial epithelium. As a gaseous signaling molecule or gasotransmitter, hydrogen sulfide (H2S) regulates a myriad of cellular and physiological processes in various tissues, including the modulation of ion transport proteins in epithelium. This study aimed to investigate the effects of H2S on ion transport across mouse endometrial epithelium and its possible role in embryo implantation. The existence of endogenous H2S in pregnant mouse uterus was tested by the detection of two key H2S-generating enzymes and measurement of H2S production rate in tissue homogenates. Transepithelial ion transport processes were electrophysiologically assessed in Ussing chambers on early pregnant mouse endometrial epithelial layers, demonstrating that H2S suppressed the anion secretion by blocking cystic fibrosis transmembrane conductance regulator (CFTR). H2S increased intracellular Cl- concentration ([Cl-]i) in mouse endometrial epithelial cells, which was abolished by pretreatment with the CFTR selective inhibitor CFTRinh-172. The cAMP level in mouse endometrial epithelial cells was not affected by H2S, indicating that H2S blocked CFTR in a cAMP-independent way. In vivo study showed that interference with H2S synthesis impaired embryo implantation. In conclusion, our study demonstrated that H2S inhibits the transepithelial anion secretion of early pregnant mouse endometrial epithelium via blockade of CFTR, contributing to the preparation for embryo implantation.
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Affiliation(s)
- Jia-Wen Xu
- School of Life Sciences, Sun Yat-sen University, 510006, No. 132, Waihuan Dong Road, Higher Education Mega Center, Guangzhou, China
| | - Dong-Dong Gao
- School of Life Sciences, Sun Yat-sen University, 510006, No. 132, Waihuan Dong Road, Higher Education Mega Center, Guangzhou, China
| | - Lei Peng
- School of Life Sciences, Sun Yat-sen University, 510006, No. 132, Waihuan Dong Road, Higher Education Mega Center, Guangzhou, China
| | - Zhuo-Er Qiu
- School of Life Sciences, Sun Yat-sen University, 510006, No. 132, Waihuan Dong Road, Higher Education Mega Center, Guangzhou, China
| | - Li-Jiao Ke
- School of Life Sciences, Sun Yat-sen University, 510006, No. 132, Waihuan Dong Road, Higher Education Mega Center, Guangzhou, China
| | - Yun-Xin Zhu
- School of Life Sciences, Sun Yat-sen University, 510006, No. 132, Waihuan Dong Road, Higher Education Mega Center, Guangzhou, China
| | - Yi-Lin Zhang
- School of Life Sciences, Sun Yat-sen University, 510006, No. 132, Waihuan Dong Road, Higher Education Mega Center, Guangzhou, China.
| | - Wen-Liang Zhou
- School of Life Sciences, Sun Yat-sen University, 510006, No. 132, Waihuan Dong Road, Higher Education Mega Center, Guangzhou, China.
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19
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Shariati MBH, Niknafs B, Seghinsara AM, Shokrzadeh N, Alivand MR. Administration of dexamethasone disrupts endometrial receptivity by alteration of expression of miRNA 223, 200a, LIF, Muc1, SGK1, and ENaC via the ERK1/2-mTOR pathway. J Cell Physiol 2019; 234:19629-19639. [PMID: 30993706 DOI: 10.1002/jcp.28562] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 02/28/2019] [Accepted: 03/06/2019] [Indexed: 12/30/2022]
Abstract
Successful implantation of embryos requires endometrial receptivity. Glucocorticoids are one of the factors influencing the implantation window. In this study, 40 female BALB/c mice were used to study the impacts of dexamethasone administration on endometrial receptivity markers during implantation window. The mice mated and were randomly divided into four groups: control (vehicle), dexamethasone (100 μg/kg, IP), PP242 (30 mg/kg, IP), and dexamethasone + PP242 (Dex + PP242). On the Day 4th and 5th of gestation, mice received their respective treatments and were killed on the 5th day. To assess the expression of Muc1, leukemia inflammatory inhibitor (LIF), serum/glucocorticoid-inducible kinase 1 (SGK1), epithelial Na+ channel (ENaC), miRNA 200a, and miRNA 223-3p in the endometrium real-time polymerase chain reaction was performed. Furthermore, using Western blot analysis protein expressions of extracellular signal-regulated kinase 1/2 (ERK1/2), mammalian target of rapamycin (mTOR), and eukaryotic translation initiation factor 4E-binding protein 1 (4E-BP1) were evaluated. Periodic Acid-Schiff staining was used to examine the histomorphological changes of the uterus. According to the results dexamethasone declined the expression of LIF, whereas upregulated expression of Muc1, SGK1, ENaC mRNA, miRNA 200a, and miRNA 223-3p in the endometrium. In addition, PP242, an mTOR inhibitor, induced mRNA expression of Muc1, miRNA200a, and miRNa223-3p whereas it declined the expression of LIF. Moreover, activity of the ERK1/2-mTOR pathway in the endometrial cells was deterred by dexamethasone and PP242. Nonstop epithelium proliferation and elevated surface glycoproteins layer on epithelium of dexamethasone and/or PP242-received groups were divulged through histochemical analysis. According to the above mentioned results, uterine receptivity during implantation period was declined by dexamethasone, at least in part, through modulation of involved genes in endometrial receptivity and inhibition of the ERK1/2-mTOR pathway.
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Affiliation(s)
| | - Behrooz Niknafs
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Reproductive Biology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Science, Tabriz, Iran
| | - Abbas Majdi Seghinsara
- Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Science, Tabriz, Iran
| | - Naser Shokrzadeh
- Infertility and Reproductive Health Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Mohammad Reza Alivand
- Department of Genetic, Facualty of Medcine, Tabriz University of Medical Sciences, Tabriz, Iran
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20
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Buddle AL, Thompson MB, Lindsay LA, Murphy CR, Whittington CM, McAllan BM. Dynamic changes to claudins in the uterine epithelial cells of the marsupial
Sminthopsis crassicaudata
(Dasyuridae) during pregnancy. Mol Reprod Dev 2019; 86:639-649. [DOI: 10.1002/mrd.23140] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 03/06/2019] [Accepted: 03/10/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Alice L. Buddle
- School of Life and Environmental Sciences University of Sydney Sydney Australia
| | - Michael B. Thompson
- School of Life and Environmental Sciences University of Sydney Sydney Australia
| | - Laura A. Lindsay
- School of Medical Sciences and Bosch Institute University of Sydney Sydney Australia
| | - Christopher R. Murphy
- School of Medical Sciences and Bosch Institute University of Sydney Sydney Australia
| | - Camilla M. Whittington
- School of Life and Environmental Sciences University of Sydney Sydney Australia
- Sydney School of Veterinary Science University of Sydney Sydney Australia
| | - Bronwyn M. McAllan
- School of Medical Sciences and Bosch Institute University of Sydney Sydney Australia
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21
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Nie L, Zhao YB, Zhao D, Long Y, Lei Y, Liu M, Wang YC, Zhang XQ, Zhang JH, Yuan DZ, Yue LM. Progesterone-induced miR-152 interferes with embryonic implantation by downregulating GLUT3 in endometrial epithelium. Am J Physiol Endocrinol Metab 2019; 316:E557-E567. [PMID: 30668148 DOI: 10.1152/ajpendo.00245.2018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
To investigate the role of progesterone-induced micro-RNA (miR)-152 in early embryonic development and implantation by regulating GLUT3 in endometrial epithelium, qRT-PCR was used to detect the expression of miR-152, GLUT1, and GLUT3 in the endometrial epithelial cells of female mice. GLUT1 and GLUT3 proteins were detected by immunohistochemical staining in the mouse endometrial epithelium. Bioinformatics prediction associated with a luciferase assay was performed to determine whether GLUT1 and GLUT3 are target genes of miR-152. Specific miR-152 mimics or inhibitors were transfected into the endometrial epithelial cells to, respectively, overexpress or downregulate miR-152. Next, the glucose concentration of uterine fluid was measured by conducting high-performance liquid chromatography in vivo, and the glucose uptake of the endometrial epithelial cells was observed using a fluorometric assay in vitro. Early embryonic development and implantation were also observed after the miR-152 mimics or inhibitors had been transfected. Embryo transfer was observed after the miR-152 mimic transfection. miR-152 was found to directly target and thereby downregulate GLUT3 expression. The expressions of both miR-152 and GLUT3 in the mouse endometrial epithelium had spatiotemporal characteristics on days 1-4 of pregnancy. miR-152 affected the glucose concentration of uterine fluid and the glucose uptake of endometrial epithelial cells. The transfection of specific miR-152 mimics led to impaired embryonic development and implantation. To conclude, in endometrial epithelial cells, progesterone-induced miR-152 downregulates GLUT3 at the posttranscriptional level to maintain a proper glucose concentration in the uterine fluid, which is necessary for early embryonic development and implantation.
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Affiliation(s)
- Li Nie
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University , Chengdu 610041 , China
| | - You-Bo Zhao
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University , Chengdu 610041 , China
| | - Dan Zhao
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University , Chengdu 610041 , China
| | - Yun Long
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University , Chengdu 610041 , China
| | - Yi Lei
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University , Chengdu 610041 , China
| | - Min Liu
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University , Chengdu 610041 , China
| | - Yi-Cheng Wang
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University , Chengdu 610041 , China
| | - Xue-Qin Zhang
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University , Chengdu 610041 , China
| | - Jin-Hu Zhang
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University , Chengdu 610041 , China
| | - Dong-Zhi Yuan
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University , Chengdu 610041 , China
| | - Li-Min Yue
- Department of Physiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University , Chengdu 610041 , China
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22
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Martins T, Pugliesi G, Sponchiado M, Gonella-Diaza AM, Ojeda-Rojas OA, Rodriguez FD, Ramos RS, Basso AC, Binelli M. Perturbations in the uterine luminal fluid composition are detrimental to pregnancy establishment in cattle. J Anim Sci Biotechnol 2018; 9:70. [PMID: 30356865 PMCID: PMC6191683 DOI: 10.1186/s40104-018-0285-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 08/15/2018] [Indexed: 12/20/2022] Open
Abstract
Background A major, unresolved issue is how the uterine microenvironment determines pregnancy success in cattle. Before implantation, conceptus development depends on the uterine secretome (i.e., histotroph). Despite its pivotal role, little is known about the dynamics of histotroph synthesis and changes in composition throughout the early diestrus and the relevance to pregnancy establishment. We hypothesize that disturbances on histotroph composition affect the establishment of pregnancy. Aim was to disturb histotroph composition at early diestrus and verify the effects on: (Exp. 1) timing to restore its composition; and (Exp. 2) pregnancy rate after multiple-embryo transfer. Estrous cycle of multiparous Nelore cows were synchronized and estrus was considered d 0 (D0) of the experiments. Disturbance was through flushing each uterine horn with 30 mL of DMPBS and collecting the resulting uterine luminal flushing (ULF) on D1; D4; D7; D1 + D4 + D7. Control group remained not-collected. In Exp. 1, ULF was collected on D7.5 from all animals and used for quantification of total protein concentration and abundance of albumin. In Exp. 2, three in vitro-produced embryos were transferred to the uterine horn ipsilateral to the ovary containing the CL on D7.5 and pregnancy was checked on D25 by ultrasound. Results In Exp. 1, ULF collection on D4 or D7 increased (1.5- to 2.2-folds) the total protein concentration and albumin abundance. ULF collection on D1 did not alter (P > 0.10) these endpoints. In Exp. 2, ULF collected on D4 or D7 decreased pregnancy rates to approximately half of that measured in the remaining groups. Conclusions Subtle perturbations imposed to the native intrauterine milieu, such as those caused by a single, low-volume collection of ULF, profoundly disturbs intrauterine composition and pregnancy success. At least 4 d were necessary for the uterus to recover its composition and the functional capacity to carry post-implantation gestation.
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Affiliation(s)
- Thiago Martins
- 1Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, 225, Avenida Duque de Caxias Norte, Jardim. Elite, Pirassununga, SP 13635-900 Brazil
| | - Guilherme Pugliesi
- 1Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, 225, Avenida Duque de Caxias Norte, Jardim. Elite, Pirassununga, SP 13635-900 Brazil
| | - Mariana Sponchiado
- 1Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, 225, Avenida Duque de Caxias Norte, Jardim. Elite, Pirassununga, SP 13635-900 Brazil
| | - Angela M Gonella-Diaza
- 1Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, 225, Avenida Duque de Caxias Norte, Jardim. Elite, Pirassununga, SP 13635-900 Brazil
| | - Oscar A Ojeda-Rojas
- 2Department of Nutrition and Animal Production, School of Veterinary Medicine and Animal Science, University of São Paulo, 225, Avenida Duque de Caxias Norte, Jardim. Elite, Pirassununga, SP 13635-900 Brazil
| | - Frederich D Rodriguez
- University Corporation of Huila, Prado Aldo: Calle 8, n° 32-49, Neiva, Huila Colombia
| | | | - Andrea C Basso
- In Vitro Brasil, 340 Rodovia, Km 166 - Soares, Mogi Mirim, SP 13800-970 Brazil
| | - Mario Binelli
- 1Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, 225, Avenida Duque de Caxias Norte, Jardim. Elite, Pirassununga, SP 13635-900 Brazil.,6Department of Animal Sciences, University of Florida, Gainesville, FL P.O. 110910 USA
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23
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Dowland SN, Madawala RJ, Poon CE, Lindsay LA, Murphy CR. Prominin-1 glycosylation changes throughout early pregnancy in uterine epithelial cells under the influence of maternal ovarian hormones. Reprod Fertil Dev 2018; 29:1194-1208. [PMID: 27166505 DOI: 10.1071/rd15432] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 03/17/2016] [Indexed: 12/29/2022] Open
Abstract
In preparation for uterine receptivity, the uterine epithelial cells (UECs) exhibit a loss of microvilli and glycocalyx and a restructuring of the actin cytoskeleton. The prominin-1 protein contains large, heavily glycosylated extracellular loops and is usually restricted to apical plasma membrane (APM) protrusions. The present study examined rat UECs during early pregnancy using immunofluorescence, western blotting and deglycosylation analyses. Ovariectomised rats were injected with oestrogen and progesterone to examine how these hormones affect prominin-1. At the time of fertilisation, prominin-1 was located diffusely in the apical domain of UECs and 147- and 120-kDa glycoforms of prominin-1 were identified, along with the 97-kDa core protein. At the time of implantation, prominin-1 concentrates towards the APM and densitometry revealed that the 120-kDa glycoform decreased (P<0.05), but there was an increase in the 97-kDa core protein (P<0.05). Progesterone treatment of ovariectomised rats resulted in prominin-1 becoming concentrated towards the APM. The 120-kDa glycoform was increased after oestrogen treatment (P<0.0001), whereas the 97-kDa core protein was increased after progesterone treatment (P<0.05). Endoglycosidase H analysis demonstrated that the 120-kDa glycoform is in the endoplasmic reticulum, undergoing protein synthesis. These results indicate that oestrogen stimulates prominin-1 production, whereas progesterone stimulates the deglycosylation and concentration of prominin-1 to the apical region of the UECs. This likely presents the deglycosylated extracellular loops of prominin-1 to the extracellular space, where they may interact with the implanting blastocyst.
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Affiliation(s)
- Samson N Dowland
- Cell and Reproductive Biology Laboratory, School of Medical Sciences (Discipline of Anatomy and Histology) and The Bosch Institute, Room N364, F13 Anderson Stuart Building, The University of Sydney, NSW 2006, Australia
| | - Romanthi J Madawala
- Cell and Reproductive Biology Laboratory, School of Medical Sciences (Discipline of Anatomy and Histology) and The Bosch Institute, Room N364, F13 Anderson Stuart Building, The University of Sydney, NSW 2006, Australia
| | - Connie E Poon
- Cell and Reproductive Biology Laboratory, School of Medical Sciences (Discipline of Anatomy and Histology) and The Bosch Institute, Room N364, F13 Anderson Stuart Building, The University of Sydney, NSW 2006, Australia
| | - Laura A Lindsay
- Cell and Reproductive Biology Laboratory, School of Medical Sciences (Discipline of Anatomy and Histology) and The Bosch Institute, Room N364, F13 Anderson Stuart Building, The University of Sydney, NSW 2006, Australia
| | - Christopher R Murphy
- Cell and Reproductive Biology Laboratory, School of Medical Sciences (Discipline of Anatomy and Histology) and The Bosch Institute, Room N364, F13 Anderson Stuart Building, The University of Sydney, NSW 2006, Australia
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24
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Yoshinaga K. A historical review of blastocyst implantation research. Biol Reprod 2018; 99:175-195. [PMID: 30010858 PMCID: PMC6279068 DOI: 10.1093/biolre/ioy093] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 04/17/2018] [Accepted: 04/23/2018] [Indexed: 02/07/2023] Open
Abstract
Research development on blastocyst implantation was reviewed in three sections: primate implantation, ungulate farm animal implantation, and the general process of blastocyst implantation in small rodents. Future research directions of this area are suggested.
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Affiliation(s)
- Koji Yoshinaga
- Fertility and Infertility Branch, Division of Extramural Research, NICHD, NIH,
Bethesda, Maryland, USA
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25
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Drews B, Milojevic V, Giller K, Ulbrich S. Fatty acid profile of blood plasma and oviduct and uterine fluid during early and late luteal phase in the horse. Theriogenology 2018; 114:258-265. [DOI: 10.1016/j.theriogenology.2018.04.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 03/28/2018] [Accepted: 04/04/2018] [Indexed: 12/21/2022]
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26
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Matson BC, Pierce SL, Espenschied ST, Holle E, Sweatt IH, Davis ES, Tarran R, Young SL, Kohout TA, van Duin M, Caron KM. Adrenomedullin improves fertility and promotes pinopodes and cell junctions in the peri-implantation endometrium. Biol Reprod 2018; 97:466-477. [PMID: 29025060 DOI: 10.1093/biolre/iox101] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 08/24/2017] [Indexed: 12/12/2022] Open
Abstract
Implantation is a complex event demanding contributions from both embryo and endometrium. Despite advances in assisted reproduction, endometrial receptivity defects persist as a barrier to successful implantation in women with infertility. We previously demonstrated that maternal haploinsufficiency for the endocrine peptide adrenomedullin (AM) in mice confers a subfertility phenotype characterized by defective uterine receptivity and sparse epithelial pinopode coverage. The strong link between AM and implantation suggested the compelling hypothesis that administration of AM prior to implantation may improve fertility, protect against pregnancy complications, and ultimately lead to better maternal and fetal outcomes. Here, we demonstrate that intrauterine delivery of AM prior to blastocyst transfer improves the embryo implantation rate and spacing within the uterus. We then use genetic decrease-of-function and pharmacologic gain-of-function mouse models to identify potential mechanisms by which AM confers enhanced implantation success. In epithelium, we find that AM accelerates the kinetics of pinopode formation and water transport and that, in stroma, AM promotes connexin 43 expression, gap junction communication, and barrier integrity of the primary decidual zone. Ultimately, our findings advance our understanding of the contributions of AM to uterine receptivity and suggest potential broad use for AM as therapy to encourage healthy embryo implantation, for example, in combination with in vitro fertilization.
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Affiliation(s)
- Brooke C Matson
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Stephanie L Pierce
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Scott T Espenschied
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Eric Holle
- Animal Models Core Facility, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Imani H Sweatt
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Eric S Davis
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.,Cystic Fibrosis Center/Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Robert Tarran
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.,Cystic Fibrosis Center/Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Steven L Young
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.,Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Trudy A Kohout
- Ferring Research Institute Inc., San Diego, California, USA
| | | | - Kathleen M Caron
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.,Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
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27
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Xie ZD, Guo YM, Ren MJ, Yang J, Wang SF, Xu TH, Chen LM, Liu Y. The Balance of [Formula: see text] Secretion vs. Reabsorption in the Endometrial Epithelium Regulates Uterine Fluid pH. Front Physiol 2018; 9:12. [PMID: 29422866 PMCID: PMC5788990 DOI: 10.3389/fphys.2018.00012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 01/05/2018] [Indexed: 12/26/2022] Open
Abstract
Uterine fluid contains a high concentration of HCO3- which plays an essential role in sperm capacitation and fertilization. In addition, the HCO3- concentration in uterine fluid changes periodically during the estrous cycle. It is well-known that the endometrial epithelium contains machineries involving the apical SLC26 family anion exchangers for secreting HCO3- into the uterine fluid. In the present study, we find for the first time that the electroneutral Na+/HCO3- cotransporter NBCn1 is expressed at the apical membrane of the endometrial epithelium. The protein abundance of the apical NBCn1 and that of the apical SLC26A4 and SLC26A6 are reciprocally regulated during the estrous cycle in the uterus. NBCn1 is most abundant at diestrus, whereas SLC26A4/A6 are most abundant at proestrus/estrus. In the ovariectomized mice, the expression of uterine NBCn1 is inhibited by β-estradiol, but stimulated by progesterone, whereas that of uterine SLC26A4/A6 is stimulated by β-estradiol. In vivo perfusion studies show that the endometrial epithelium is capable of both secreting and reabsorbing HCO3-. Moreover, the activity for HCO3- secretion by the endometrial epithelium is significantly higher at estrus than it is at diestrus. The opposite is true for HCO3- reabsorption. We conclude that the endometrial epithelium simultaneously contains the activity for HCO3- secretion involving the apical SLC26A4/A6 and the activity for HCO3- reabsorption involving the apical NBCn1, and that the acid-base homeostasis in the uterine fluid is regulated by the finely-tuned balance of the two activities.
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Affiliation(s)
- Zhang-Dong Xie
- Key Laboratory of Molecular Biophysics of Ministry of Education, Department of Biophysics and Molecular Physiology, School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Yi-Min Guo
- Key Laboratory of Molecular Biophysics of Ministry of Education, Department of Biophysics and Molecular Physiology, School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Mei-Juan Ren
- Key Laboratory of Molecular Biophysics of Ministry of Education, Department of Biophysics and Molecular Physiology, School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Jichun Yang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Shao-Fang Wang
- Wuhan National Laboratory for Optoelectronics, Britton Chance Center for Biomedical Photonics, Huazhong University of Science and Technology, Wuhan, China
| | - Tong-Hui Xu
- Wuhan National Laboratory for Optoelectronics, Britton Chance Center for Biomedical Photonics, Huazhong University of Science and Technology, Wuhan, China
| | - Li-Ming Chen
- Key Laboratory of Molecular Biophysics of Ministry of Education, Department of Biophysics and Molecular Physiology, School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Ying Liu
- Key Laboratory of Molecular Biophysics of Ministry of Education, Department of Biophysics and Molecular Physiology, School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
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28
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Shahzad H, Giribabu N, Karim K, Kassim N, Muniandy S, Kumar KE, Salleh N. Quercetin interferes with the fluid volume and receptivity development of the uterus in rats during the peri-implantation period. Reprod Toxicol 2017; 71:42-54. [DOI: 10.1016/j.reprotox.2017.04.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 04/10/2017] [Accepted: 04/13/2017] [Indexed: 02/07/2023]
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29
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Zhang Y, Wang Q, Wang H, Duan E. Uterine Fluid in Pregnancy: A Biological and Clinical Outlook. Trends Mol Med 2017. [DOI: 10.1016/j.molmed.2017.05.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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30
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Shahzad H, Giribabu N, Karim K, Muniandy S, Kassim NM, Salleh N. Quercetin alters uterine fluid volume and aquaporin (AQP) subunits (AQP-1, 2, 5 & 7) expression in the uterus in the presence of sex-steroids in rats. Reprod Toxicol 2017; 69:276-285. [DOI: 10.1016/j.reprotox.2017.03.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 03/13/2017] [Accepted: 03/20/2017] [Indexed: 12/27/2022]
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31
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Shahzad H, Giribabu N, Karim K, Kassim NM, Muniandy S, Salleh N. Combinatorial effects of quercetin and sex-steroids on fluid and electrolytes' (Na+, Cl-, HCO3-) secretory mechanisms in the uterus of ovariectomised female Sprague-Dawley rats. PLoS One 2017; 12:e0172765. [PMID: 28253299 PMCID: PMC5333842 DOI: 10.1371/journal.pone.0172765] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 02/09/2017] [Indexed: 12/18/2022] Open
Abstract
Dysregulation of uterine fluid environment could impair successful reproduction and this could be due to the effect of environmental estrogens. Therefore, in this study, effect of quercetin, an environmental estrogen on uterine fluid and electrolytes concentrations were investigated under sex-steroid influence. Ovariectomised adult female Sprague-Dawley rats were given 10, 50 or 100mg/kg/day quercetin subcutaneously with 17-β estradiol (E) for seven days or three days E, then three days E plus progesterone (P) (E+P) treatment. Uterine fluid secretion rate, Na+, Cl- and HCO3- concentrations were determined by in-vivo perfusion. Following sacrifice, uteri were harvested and levels of the proteins of interest were identified by Western blotting and Realtime PCR. Distribution of these proteins in the uterus was observed by immunofluorescence. Levels of uterine cAMP were measured by enzyme-linked immunoassay (EIA). Administration of quercetin at increasing doses increased uterine fluid secretion rate, Na+, Cl- and HCO3- concentrations, but to the levels lesser than that of E. In concordant, levels of CFTR, SLC4A4, ENaC (α, β and γ), Na+/K+-ATPase, GPα/β, AC and cAMP in the uterus increased following increased in the doses of quercetin. Co-administration of quercetin with E caused uterine fluid secretion rate, Na+, Cl- and HCO3- concentrations to decrease. In concordant, uterine CFTR, SLC26A6, SLC4A4, ENaC (α, β and γ), Na+/K+-ATPase, GPα/β, AC and cAMP decreased. Greatest effects were observed following co-administration of 10mg/kg/day quercetin with E. Co-administration of quercetin with E+P caused uterine fluid Na+ and HCO3- concentrations to increase but no changes in fluid secretion rate and Cl- concentration were observed. Co-administration of high dose quercetin (100 mg/kg/day) with E+P caused uterine CFTR, SLC26A6, AC, GPα/β and ENaC (α, β and γ) to increase. Quercetin-induced changes in the uterine fluid secretion rate and electrolytes concentrations could potentially affect the uterine reproductive functions under female sex-steroid influence.
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Affiliation(s)
- Huma Shahzad
- Department of Physiology, Faculty of Medicine, University of Malaya, Lembah Pantai, Kuala Lumpur, Malaysia
| | - Nelli Giribabu
- Department of Physiology, Faculty of Medicine, University of Malaya, Lembah Pantai, Kuala Lumpur, Malaysia
| | - Kamarulzaman Karim
- Department of Physiology, Faculty of Medicine, University of Malaya, Lembah Pantai, Kuala Lumpur, Malaysia
| | - Normadiah M. Kassim
- Department of Anatomy, Faculty of Medicine, University of Malaya, Lembah Pantai, Kuala Lumpur, Malaysia
| | - Sekaran Muniandy
- Department of Biochemistry, Faculty of Medicine and Biomedical Sciences, MAHSA University, Jalan Elmu, Off Jalan University, Kuala Lumpur, Malaysia
| | - Naguib Salleh
- Department of Physiology, Faculty of Medicine, University of Malaya, Lembah Pantai, Kuala Lumpur, Malaysia
- * E-mail:
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32
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Chinigarzadeh A, Muniandy S, Salleh N. Combinatorial effect of genistein and female sex-steroids on uterine fluid volume and secretion rate and aquaporin (AQP)-1, 2, 5, and 7 expression in the uterus in rats. ENVIRONMENTAL TOXICOLOGY 2017; 32:832-844. [PMID: 27235753 DOI: 10.1002/tox.22283] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 04/29/2016] [Indexed: 06/05/2023]
Abstract
UNLABELLED We hypothesized that genistein can interfere with the regulation of uterine fluid volume, secretion rate and expression of aquaporin in the uterus by female sex-steroids, i.e., estrogen and progesterone. Therefore, the aims of this study were to investigate changes in these parameters in the presence of genistein and female sex-steroids. METHODS Female Sprague-Dawley rats were ovariectomized and received 3-days estradiol-17β benzoate (E2) plus genistein (25, 50, or 100 mg kg-1 day-1 ) or 3-days E2 followed by 3-days E2 plus progesterone with genistein (25, 50, or 100 mg kg-1 day-1 ). A day after last treatment, uterine fluid secretion rate was determined by in vivo uterine perfusion with rats under anesthesia. Animals were sacrificed and uteri were harvested and subjected for histological analyses. Luminal/outer uterine circumference was determined and distribution of AQP-1, 2, 5, and 7 in endometrium was visualized by immunofluorescence. Expression of AQP-1, 2, 5, and 7 proteins and mRNAs were determined by Western blotting and Real-time PCR respectively. RESULTS Combined treatment of E2 with high dose genistein (50 and 100 mg kg-1 day-1 ) resulted in significant decrease in uterine fluid volume, secretion rate and expression of AQP-1, 2, 5, and 7 proteins and mRNAs in uterus (p < 0.05). No significant changes in these parameters were observed when 25 mg kg-1 day-1 genistein was given with E2 or when genistein was given with E2 followed by E2 plus progesterone Conclusions: Decreased in uterine fluid volume, secretion rate and AQP-1, 2, 5, and 7 expression in the uterus by high dose genistein in the presence of E2 could potentially affect female fertility. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 832-844, 2017.
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Affiliation(s)
- Asma Chinigarzadeh
- Department of Physiology, Faculty of Medicine, University of Malaya, 50603, Lembah Pantai, Kuala Lumpur, Malaysia
| | - Sekaran Muniandy
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, 50603, Lembah Pantai, Kuala Lumpur, Malaysia
| | - Naguib Salleh
- Department of Physiology, Faculty of Medicine, University of Malaya, 50603, Lembah Pantai, Kuala Lumpur, Malaysia
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Martínez-Peña AA, Rivera-Baños J, Méndez-Carrillo LL, Ramírez-Solano MI, Galindo-Bustamante A, Páez-Franco JC, Morimoto S, González-Mariscal L, Cruz ME, Mendoza-Rodríguez CA. Perinatal administration of bisphenol A alters the expression of tight junction proteins in the uterus and reduces the implantation rate. Reprod Toxicol 2017; 69:106-120. [PMID: 28216266 DOI: 10.1016/j.reprotox.2017.02.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 02/07/2017] [Accepted: 02/13/2017] [Indexed: 11/24/2022]
Abstract
We studied the effect of bisphenol-A (BPA) administration to rats, during the perinatal period, on the fertility of F1 generation and on the expression of tight junction (TJ) proteins in the uterus during early pregnancy. Pregnant Wistar dams (F0) received: BPA-L (0.05mg/kg/day), BPA-H (20mg/kg/day) or vehicle, from gestational day (GD) 6 to lactation day 21. F1 female pups were mated at 3 months of age and sacrificed at GD 1, 3, 6, and 7. Serum hormonal levels, ovulation rate, number of implantation sites and expression of TJ proteins in the uterus of F1 females were evaluated. BPA treatment induced no change in ovulation rate, but induced alterations in progesterone (P4) and estradiol (E2) serum levels, and in implantation rate. With regards to TJ proteins, BPA-H increased claudin-1 during all GDs; eliminated the peaks of claudins -3 and -4 at GD 3 and 6, respectively; and decreased claudin-7 at GD 6, ZO-1 from GD 1-6, and claudin-3 at GD 7 in stromal cells. BPA-L instead, eliminated claudin-3 peak at GD 3, increased claudin-4 and decreased claudin-7 from GD 1-6, decreased claudin-1 at GD 3 and 7 and claudin-4 at GD 7 in stromal cells. BPA-L also decreased ZO-1 at GDs 1 and 3 and increased ZO-1 at GD 6. Thus, BPA treatment during perinatal period perturbed, when the animals reached adulthood and became pregnant, the particular expression of TJ proteins in the uterine epithelium and reduced in consequence the number of implantation sites.
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Affiliation(s)
- Annia A Martínez-Peña
- Facultad de Química, Departamento de Biología, Universidad Nacional Autónoma de Mexico, Mexico D.F. 04510, Mexico
| | - Jorge Rivera-Baños
- Facultad de Química, Departamento de Biología, Universidad Nacional Autónoma de Mexico, Mexico D.F. 04510, Mexico
| | - Laura L Méndez-Carrillo
- Facultad de Química, Departamento de Biología, Universidad Nacional Autónoma de Mexico, Mexico D.F. 04510, Mexico
| | - Marcos I Ramírez-Solano
- Facultad de Química, Departamento de Biología, Universidad Nacional Autónoma de Mexico, Mexico D.F. 04510, Mexico
| | - Aarón Galindo-Bustamante
- Facultad de Química, Departamento de Biología, Universidad Nacional Autónoma de Mexico, Mexico D.F. 04510, Mexico
| | - J Carlos Páez-Franco
- Facultad de Química, Departamento de Biología, Universidad Nacional Autónoma de Mexico, Mexico D.F. 04510, Mexico
| | - Sumiko Morimoto
- Instituto Nacional de Ciencias Médicas y de la Nutrición Salvador Zubirán, Mexico, D.F. 14080, Mexico
| | - Lorenza González-Mariscal
- Centro de Investigación y Estudios Avanzados (CINVESTAV), Departamento de Fisiología, Biofísica y Neurociencias, Mexico, D.F. 07360, Mexico
| | - M Esther Cruz
- Facultad de Estudios Superiores Zaragoza, Laboratorio de Neuroendocrinología, Universidad Nacional Autónoma de Mexico, Mexico, D.F. 15000, Mexico
| | - C Adriana Mendoza-Rodríguez
- Facultad de Química, Departamento de Biología, Universidad Nacional Autónoma de Mexico, Mexico D.F. 04510, Mexico.
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Borman ED, Foster WG, deCatanzaro D. Concurrent administration of diethylhexyl phthalate reduces the threshold dose at which bisphenol A disrupts blastocyst implantation and cadherins in mice. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2017; 49:105-111. [PMID: 27984777 DOI: 10.1016/j.etap.2016.12.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 12/06/2016] [Accepted: 12/08/2016] [Indexed: 06/06/2023]
Abstract
Many people are repeatedly exposed to both bisphenol A (BPA) and diethylhexyl phthalate (DEHP), but there has been little research concerning their effects in combination. Both can disrupt blastocyst implantation in inseminated females, albeit at high doses. We exposed mice on gestation days (GD) 1-4 to combinations of BPA and DEHP in doses below the threshold necessary to disrupt implantation on their own. On GD 6, there were fewer normally-developed implantation sites and more underdeveloped implantation sites in females given the combined subthreshold doses. Uterine epithelial cadherin (e-cadherin), a protein that assists in blastocyst adhesion to the uterine epithelium, was significantly reduced by these combined doses, but not by the individual doses. A similar trend was seen in integrin αvβ3, another uterine adhesion molecule. Cadherin-11 was disrupted by BPA but not DEHP. These data are consistent with competition of BPA and DEHP for conjugating enzymes.
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Affiliation(s)
- Evan D Borman
- Department of Psychology, Neuroscience & Behaviour, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Warren G Foster
- Department of Obstetrics and Gynecology, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Denys deCatanzaro
- Department of Psychology, Neuroscience & Behaviour, McMaster University, Hamilton, Ontario L8S 4K1, Canada.
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Chinigarzadeh A, Karim K, Muniandy S, Salleh N. Isoflavone genistein inhibits estrogen-induced chloride and bicarbonate secretory mechanisms in the uterus in rats. J Biochem Mol Toxicol 2016; 31. [PMID: 27891704 DOI: 10.1002/jbt.21878] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 09/29/2016] [Accepted: 10/07/2016] [Indexed: 01/23/2023]
Abstract
We hypothesized that genistein could affect the chloride (Cl- ) and bicarbonate (HCO3- ) secretory mechanisms in uterus. Ovariectomized female rats were given estradiol or estradiol plus progesterone with 25, 50, or 100 mg/kg/day genistein. Following completion of the treatment, uterine fluid Cl- and HCO3- concentrations were determined by in vivo uterine perfusion. Uteri were subjected for molecular biological analysis (Western blot, qPCR, and immunohistochemistry) to detect levels of expression of Cystic Fibrosis transmembrane regulator (CFTR), Cl- /HCO3- exchanger (SLC26a6), Na+ /HCO3- cotransporter (SLC4a4), and estrogen receptor (ER)-α and β. Coadministration of genistein resulted in decrease in Cl- and HCO3- concentrations and expression of CFTR, SLC26a6, SLC4a4, and ER-α and ER-β in the uteri of estradiol-treated rats. In estradiol plus progesterone-treated rats, a significant increase in the above parameters were observed following high-dose genistein treatment except for the SLC24a4 level. In conclusion, genistein-induced changes in the uterus could affect the reproductive processes that might result in infertility.
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Affiliation(s)
- Asma Chinigarzadeh
- Department of Physiology, Faculty of Medicine, University of Malaya, Lembah Pantai, Kuala Lumpur, 50603, Malaysia
| | - Kamarulzaman Karim
- Department of Physiology, Faculty of Medicine, University of Malaya, Lembah Pantai, Kuala Lumpur, 50603, Malaysia
| | - Sekaran Muniandy
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Lembah Pantai, Kuala Lumpur, 50603, Malaysia
| | - Naguib Salleh
- Department of Physiology, Faculty of Medicine, University of Malaya, Lembah Pantai, Kuala Lumpur, 50603, Malaysia
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Martin FC, Ang CS, Gardner DK, Renfree MB, Shaw G. Uterine flushing proteome of the tammar wallaby after reactivation from diapause. Reproduction 2016; 152:491-505. [DOI: 10.1530/rep-16-0154] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 08/01/2016] [Indexed: 01/15/2023]
Abstract
The marsupial tammar wallaby has the longest period of embryonic diapause of any mammal, up to 11 months, during which there is no cell division or blastocyst growth. Since the blastocyst in diapause is surrounded by acellular coats, the signals that maintain or terminate diapause involve factors that reside in uterine secretions. The nature of such factors remains to be resolved. In this study, uterine flushings (UFs) were used to assess changes in uterine secretions of tammars using liquid chromatography–mass spectrometry (LC–MS/MS) during diapause (day 0 and 3) and reactivation days (d) 4, 5, 6, 8, 9, 11 and 24 after removal of pouch young (RPY), which initiates embryonic development. This study supports earlier suggestions that the presence of specific factors stimulate reactivation, early embryonic growth and cell proliferation. A mitogen, hepatoma-derived growth factor and soluble epidermal growth factor receptors were observed from d3 until at least d11 RPY when these secreted proteins constituted 21% of the UF proteome. Binding of these factors to specific cellular receptors or growth factors may directly stimulate DNA synthesis and division in endometrial gland cells. Proteins involved in the p53/CDKN1A (p21) cell cycle inhibition pathway were also observed in the diapause samples. Progesterone and most of the oestrogen-regulated proteins were present in the UF after d3, which is concomitant with the start of blastocyst mitoses at d4. We propose that once the p21 inhibition of the cell cycle is lost, growth factors including HDGF and EGFR are responsible for reactivation of the diapausing blastocyst via the uterine secretions.
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Chinigarzadeh A, Muniandy S, Salleh N. Estradiol, progesterone and genistein differentially regulate levels of aquaporin (AQP)-1, 2, 5 and 7 expression in the uteri of ovariectomized, sex-steroid deficient rats. Steroids 2016; 115:47-55. [PMID: 27521800 DOI: 10.1016/j.steroids.2016.08.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 07/10/2016] [Accepted: 08/07/2016] [Indexed: 02/06/2023]
Abstract
UNLABELLED In this study, effects of estradiol, progesterone and genistein on uterine aquaporin (AQP)-1, 2, 5 and 7 expression were investigated in sex-steroid deficient state which could help to elucidate the mechanisms underlying uterine fluid volume changes that were reported under these hormone and hormone-like compound influences. METHODS Uteri from ovariectomized, female Sprague-Dawley rats receiving seven days estradiol, progesterone or genistein (25, 50 and 100mg/kg/day) were harvested and levels of AQP-1, 2, 5 and 7 proteins and mRNAs were determined by Western blotting and Real-time PCR (qPCR) respectively. Distribution of these proteins in uterus was observed by immunohistochemistry. RESULTS Genistein caused a dose-dependent increase in uterine AQP-1, 2, 5 and 7 protein and mRNA expression, however at the levels lower than following estradiol or progesterone stimulations. Effects of genistein were antagonized by estradiol receptor blocker, ICI 182780. Estradiol caused the highest AQP-2 protein and mRNA expression while progesterone caused the highest AQP-1, 5 and 7 protein and mRNA expression in uterus. AQP-1, 2, 5 and 7 protein were found to be distributed in the myometrium as well as in uterine luminal and glandular epithelia and endometrial blood vessels. In conclusion, the observed effects of estradiol, progesterone and genistein on uterine AQP-1, 2, 5 and 7 expression could help to explain the differences in the amount of fluid accumulated in the uterus under these different conditions.
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Affiliation(s)
- Asma Chinigarzadeh
- Dept of Physiology, Faculty of Medicine, University of Malaya, 50603 Lembah Pantai, Kuala Lumpur, Malaysia
| | - Sekaran Muniandy
- Dept of Molecular Medicine, Faculty of Medicine, University of Malaya, 50603 Lembah Pantai, Kuala Lumpur, Malaysia
| | - Naguib Salleh
- Dept of Physiology, Faculty of Medicine, University of Malaya, 50603 Lembah Pantai, Kuala Lumpur, Malaysia.
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Hanukoglu I, Hanukoglu A. Epithelial sodium channel (ENaC) family: Phylogeny, structure-function, tissue distribution, and associated inherited diseases. Gene 2016; 579:95-132. [PMID: 26772908 PMCID: PMC4756657 DOI: 10.1016/j.gene.2015.12.061] [Citation(s) in RCA: 250] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 12/20/2015] [Accepted: 12/22/2015] [Indexed: 01/24/2023]
Abstract
The epithelial sodium channel (ENaC) is composed of three homologous subunits and allows the flow of Na(+) ions across high resistance epithelia, maintaining body salt and water homeostasis. ENaC dependent reabsorption of Na(+) in the kidney tubules regulates extracellular fluid (ECF) volume and blood pressure by modulating osmolarity. In multi-ciliated cells, ENaC is located in cilia and plays an essential role in the regulation of epithelial surface liquid volume necessary for cilial transport of mucus and gametes in the respiratory and reproductive tracts respectively. The subunits that form ENaC (named as alpha, beta, gamma and delta, encoded by genes SCNN1A, SCNN1B, SCNN1G, and SCNN1D) are members of the ENaC/Degenerin superfamily. The earliest appearance of ENaC orthologs is in the genomes of the most ancient vertebrate taxon, Cyclostomata (jawless vertebrates) including lampreys, followed by earliest representatives of Gnathostomata (jawed vertebrates) including cartilaginous sharks. Among Euteleostomi (bony vertebrates), Actinopterygii (ray finned-fishes) branch has lost ENaC genes. Yet, most animals in the Sarcopterygii (lobe-finned fish) branch including Tetrapoda, amphibians and amniotes (lizards, crocodiles, birds, and mammals), have four ENaC paralogs. We compared the sequences of ENaC orthologs from 20 species and established criteria for the identification of ENaC orthologs and paralogs, and their distinction from other members of the ENaC/Degenerin superfamily, especially ASIC family. Differences between ENaCs and ASICs are summarized in view of their physiological functions and tissue distributions. Structural motifs that are conserved throughout vertebrate ENaCs are highlighted. We also present a comparative overview of the genotype-phenotype relationships in inherited diseases associated with ENaC mutations, including multisystem pseudohypoaldosteronism (PHA1B), Liddle syndrome, cystic fibrosis-like disease and essential hypertension.
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Affiliation(s)
- Israel Hanukoglu
- Laboratory of Cell Biology, Faculty of Natural Sciences, Ariel University, Ariel, Israel.
| | - Aaron Hanukoglu
- Division of Pediatric Endocrinology, E. Wolfson Medical Center, Holon, Israel; Sackler School of Medicine, Tel-Aviv University, Tel Aviv, Israel
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Combinatorial effects of genistein and sex-steroids on the level of cystic fibrosis transmembrane regulator (CFTR), adenylate cyclase (AC) and cAMP in the cervix of ovariectomised rats. Reprod Toxicol 2015; 58:194-202. [PMID: 26529183 DOI: 10.1016/j.reprotox.2015.10.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 10/19/2015] [Accepted: 10/26/2015] [Indexed: 12/16/2022]
Abstract
The combinatorial effects of genistein and estrogen (E) or estrogen plus progesterone (E+P) on CFTR, AC and cAMP levels in cervix were investigated. Ovariectomised adult female rats received 50 or 100mg/kg/day genistein with E or E followed by E+P [E+(E+P)] for seven consecutive days. Cervixes were harvested and analyzed for CFTR mRNA levels by Real-time PCR. Distribution of AC and CFTR proteins in endocervix were observed by immunohistochemistry. Levels of cAMP were measured by enzyme-immunoassay. Molecular docking predicted interaction between genistein and AC. Our results indicate that levels of CFTR, AC and cAMP in cervix of rats receiving genistein plus E were higher than E-only treatment (p<0.05) while genistein plus [E+(E+P)] were higher than E+(E+P)-only treatment (p<0.05). In conclusions, increased levels of CFTR, AC and cAMP in cervix of E and E+(E+P)-treated rats by genistein could affect the cervical secretory function which could influence the female reproductive processes.
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Karim K, Giribabu N, Muniandy S, Salleh N. Vacuolar-ATPase (V-ATPase) Mediates Progesterone-Induced Uterine Fluid Acidification in Rats. J Membr Biol 2015; 249:65-76. [PMID: 26403527 DOI: 10.1007/s00232-015-9848-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Accepted: 09/18/2015] [Indexed: 12/24/2022]
Abstract
We hypothesized that progesterone-induced decrease in uterine fluid pH involves V-ATPase. In this study, expression and functional activity of V-ATPase in uterus were investigated under progesterone influence. Ovariectomized adult female rats received subcutaneous injection of estradiol-17β (1 µg/kg/day) or progesterone (20 mg/kg/day) for 3 days or 3 days estradiol-17β followed by 3 days vehicle, progesterone, or estradiol-17β plus progesterone. Mifepristone, a progesterone receptor blocker, was concomitantly given to the rats which received progesterone. A day after last injection, rate of uterine fluid secretion, its HCO3 (-) concentration, and pH were determined via in vivo uterine perfusion in rats under anesthesia. V-ATPase inhibitor, bafilomycin, was introduced into the perfusion buffer, and changes in these parameters were observed. Expression of V-ATPase A1 and B1/2 proteins and mRNAs in uterus were quantified by Western blotting and real-time PCR, respectively. Distribution of these proteins was observed by immunohistochemistry. Our findings showed that under progesterone influence, uterine fluid secretion rate, HCO3 (-) concentration, and pH were significantly reduced. Administration of bafilomycin did not cause significant changes in fluid secretion rate; however, HCO3 (-) concentration and pH were significantly elevated. In parallel with these changes, expression of V-ATPase A1 and B1/2 proteins and mRNAs were significantly increased with these proteins highly distributed in uterine luminal and glandular epithelia. In conclusion, increased expression and functional activity of V-ATPase were most likely responsible for the decreased in uterine fluid pH observed under progesterone influence.
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Affiliation(s)
- Kamarulzaman Karim
- Department of Physiology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Nelli Giribabu
- Department of Physiology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Sekaran Muniandy
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Naguib Salleh
- Department of Physiology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
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Testosterone Induces Increase in Aquaporin (AQP)-1, 5, and 7 Expressions in the Uteri of Ovariectomized Rats. J Membr Biol 2015. [DOI: 10.1007/s00232-015-9823-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Wale PL, Gardner DK. The effects of chemical and physical factors on mammalian embryo culture and their importance for the practice of assisted human reproduction. Hum Reprod Update 2015. [PMID: 26207016 DOI: 10.1093/humupd/dmv034] [Citation(s) in RCA: 174] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Although laboratory procedures, along with culture media formulations, have improved over the past two decades, the issue remains that human IVF is performed in vitro (literally 'in glass'). METHODS Using PubMed, electronic searches were performed using keywords from a list of chemical and physical factors with no limits placed on time. Examples of keywords include oxygen, ammonium, volatile organics, temperature, pH, oil overlays and incubation volume/embryo density. Available clinical and scientific evidence surrounding physical and chemical factors have been assessed and presented here. RESULTS AND CONCLUSIONS Development of the embryo outside the body means that it is constantly exposed to stresses that it would not experience in vivo. Sources of stress on the human embryo include identified factors such as pH and temperature shifts, exposure to atmospheric (20%) oxygen and the build-up of toxins in the media due to the static nature of culture. However, there are other sources of stress not typically considered, such as the act of pipetting itself, or the release of organic compounds from the very tissue culture ware upon which the embryo develops. Further, when more than one stress is present in the laboratory, there is evidence that negative synergies can result, culminating in significant trauma to the developing embryo. It is evident that embryos are sensitive to both chemical and physical signals within their microenvironment, and that these factors play a significant role in influencing development and events post transfer. From the viewpoint of assisted human reproduction, a major concern with chemical and physical factors lies in their adverse effects on the viability of embryos, and their long-term effects on the fetus, even as a result of a relatively brief exposure. This review presents data on the adverse effects of chemical and physical factors on mammalian embryos and the importance of identifying, and thereby minimizing, them in the practice of human IVF. Hence, optimizing the in vitro environment involves far more than improving culture media formulations.
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Affiliation(s)
- Petra L Wale
- School of BioSciences, University of Melbourne, Parkville, Victoria, Australia Melbourne IVF, Melbourne, Victoria, Australia
| | - David K Gardner
- School of BioSciences, University of Melbourne, Parkville, Victoria, Australia
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Chinigarzadeh A, Muniandy S, Salleh N. Enhanced expression of sodium hydrogen exchanger (NHE)-1, 2 and 4 in the uteri of rat model for post-menopause under phytoestrogen genistein influence. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2015; 40:39-48. [PMID: 26068551 DOI: 10.1016/j.etap.2015.05.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 04/23/2015] [Accepted: 05/01/2015] [Indexed: 06/04/2023]
Abstract
Maintaining near normal uterine fluid pH is important for restoring uterine function after menopause. We hypothesized that genistein could restore uterine fluid pH via its effect on NHE expression. This study therefore investigated changes in uterine NHE-1, 2 and 4 expression under genistein influence. Ovariectomized female rats received genistein (25, 50 or 100mg/kg/day) for seven consecutive days. Uteri were harvested and NHE-1, 2 and 4 mRNA expression were analyzed by Real-time PCR while distribution of these transporters' protein was observed by immunohistochemistry. Expression of NHE-1, 2 and 4 mRNA increased with increasing doses of genistein which was antagonized by ICI 182780. Under genistein influence, NHE-1, 2 and 4 proteins were found to be distributed at apical membrane of endometrial luminal epithelia. Enhanced expression of NHE-1, 2 and 4 in ovariectomised rat uteri by genistein might help to restore pH of uterine fluid which could be useful for women after menopause.
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Affiliation(s)
- Asma Chinigarzadeh
- Dept of Physiology, Faculty of Medicine, University of Malaya, 50603 Lembah Pantai, Kuala Lumpur, Malaysia
| | - Sekaran Muniandy
- Dept of Molecular Medicine, Faculty of Medicine, University of Malaya, 50603 Lembah Pantai, Kuala Lumpur, Malaysia
| | - Naguib Salleh
- Dept of Physiology, Faculty of Medicine, University of Malaya, 50603 Lembah Pantai, Kuala Lumpur, Malaysia.
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Chinigarzadeh A, Muniandy S, Salleh N. Estrogen, progesterone, and genistein differentially regulate levels of expression of α-, β-, and γ-epithelial sodium channel (ENaC) and α-sodium potassium pump (Na⁺/K⁺-ATPase) in the uteri of sex steroid-deficient rats. Theriogenology 2015; 84:911-26. [PMID: 26154487 DOI: 10.1016/j.theriogenology.2015.05.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 04/18/2015] [Accepted: 05/28/2015] [Indexed: 12/22/2022]
Abstract
Estrogen, progesterone, and genistein could induce changes in uterine fluid volume and Na(+) concentration. Progesterone upregulates expression of epithelial sodium channel (ENaC) and Na(+)/K(+)-ATPase which contributed toward these changes. However, effects of estrogen and genistein were unknown. This study therefore investigated changes in expression of these proteins in the uterus under estrogen, progesterone, and genistein influences to further understand mechanisms underlying sex steroids and phytoestrogen effects on uterine fluid Na(+) regulation. In this study, uteri of ovariectomized female rats receiving 7-day treatment with genistein (25, 50, and 100 mg/kg/day), estrogen (0.8 × 10(-4) mg/kg/day), or progesterone (4 mg/kg/day) were harvested, and expression levels of α-, β-, and γ-ENaC proteins and messenger RNAs (mRNAs) and α-Na(+)/K(+)-ATPase protein were determined by Western blotting (proteins) and real-time polymerase chain reaction (mRNA). Meanwhile, distribution of α-, β-, and γ-ENaC and α-Na(+)/K(+)-ATPase proteins in the uterus was identified by immunohistochemistry. Our findings indicated that expression of α-, β-, and γ-ENaC proteins and mRNAs and α-Na(+)/K(+)-ATPase protein were enhanced under progesterone influence. Lower expressions were noted under estrogen and genistein influences compared to progesterone. Under estrogen, progesterone, and genistein influences, α- and β-ENaC were distributed at apical membrane and γ-ENaC was distributed at apical and basolateral membranes of uterine luminal epithelia. Under progesterone influence, α-Na(+)/K(+)-ATPase was highly expressed at basolateral membrane. In conclusion, high expression of α-, β-, and γ-ENaC and α-Na(+)/K(+)-ATPase under progesterone influence would contribute toward increased uterine fluid Na(+) reabsorption, whereas lesser expression of these proteins under estrogen and genistein influences would contribute toward lower reabsorption of uterine fluid Na(+).
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Affiliation(s)
- Asma Chinigarzadeh
- Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Sekaran Muniandy
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Naguib Salleh
- Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.
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Borman ED, Foster WG, Greenacre MKE, Muir CC, deCatanzaro D. Stress lowers the threshold dose at which bisphenol A disrupts blastocyst implantation, in conjunction with decreased uterine closure and e-cadherin. Chem Biol Interact 2015; 237:87-95. [PMID: 26026914 DOI: 10.1016/j.cbi.2015.05.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 05/04/2015] [Accepted: 05/18/2015] [Indexed: 01/07/2023]
Abstract
Exposure to stress can disrupt blastocyst implantation in inseminated female mice, and evidence implicates elevation of the female's estrogen:progesterone ratio. Exposure to the xenoestrogen, bisphenol A (BPA) can also disrupt implantation. Undisturbed control female CF-1 mice were compared to other females that were exposed to predators (rats) across a wire-mesh grid during gestation days (GD) 1-4, a procedure that elevates corticosterone but does not on its own disrupt implantation in this genetic strain. They were concurrently exposed to varied doses of BPA that on their own were below the threshold dose sufficient to disrupt implantation. On GD 6, we measured the number of intrauterine implantation sites and extracted their uteri, which subsequently were stained and analyzed for uterine luminal area and epithelial cadherin (e-cadherin), a molecule that causes uterine closure and adhesion of blastocysts to the uterine epithelium. The combination of rat-exposure stress and BPA significantly disrupted implantation and increased uterine luminal area, whereas either manipulation on its own did not. E-cadherin was significantly reduced by exposure to BPA, positively correlated with the number of implantation sites, and inversely correlated with luminal area. BPA exposure was also associated with nonmonotonic perturbation of urinary corticosterone concentrations and increased urinary estradiol concentrations on GD 6. These data are consistent with a potential summation of stress-induced estrogen and xenoestrogen activity.
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Affiliation(s)
- Evan D Borman
- Department of Psychology, Neuroscience & Behaviour, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Warren G Foster
- Department of Obstetrics and Gynecology, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Matthew K E Greenacre
- Department of Psychology, Neuroscience & Behaviour, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Cameron C Muir
- Department of Psychology, Centre for Neuroscience, Brock University, St. Catharines, Ontario L2S 3A1, Canada
| | - Denys deCatanzaro
- Department of Psychology, Neuroscience & Behaviour, McMaster University, Hamilton, Ontario L8S 4K1, Canada.
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Ismail N, Giribabu N, Muniandy S, Salleh N. Estrogen and progesterone differentially regulate the levels of cystic fibrosis transmembrane regulator (CFTR), adenylate cyclase (AC), and cyclic adenosine mono-phosphate (cAMP) in the rat cervix. Mol Reprod Dev 2015; 82:463-74. [PMID: 26018621 DOI: 10.1002/mrd.22496] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Accepted: 04/15/2015] [Indexed: 12/14/2022]
Abstract
The consistency of the cervical mucus changes with the reproductive cycle, which we hypothesized involved changing levels of cystic fibrosis transmembrane regulator (CFTR), adenylate cyclase (AC), and cyclic adenosine mono-phosphate (cAMP). We therefore measured the abundance of each in the rat cervix under estrogen and progesterone influence to determine if the activity of these components could explain the changes in the consistency of cervical mucus. Ovariectomised adult female rats were treated with three days of either estrogen (1 μg/kg/day) or progesterone (20 mg/kg/day), or three days of estrogen followed by two days of either vehicle or progesterone or estrogen plus progesterone. In some groups, mifepristone (7 mg/kg/day) was concurrently given with progesterone. Animals were then sacrificed, and the cervix was harvested for protein and mRNA expression analyses by Western blot and real-time PCR, respectively. The distribution of proteins was investigated by immunohistochemistry, and levels of cAMP were determined by enzyme-linked immunosorbent assay (ELISA). Cftr mRNA, AC protein, and cAMP levels in cervical homogenates as well as the tissue distribution of CFTR and AC in endocervical epithelia were highest under estrogen influence; the opposite pattern was seen under progesterone influence. Cervical lumen circumference was highest under estrogen and lowest under progesterone. The effects of progesterone were antagonized by mifepristone. Therefore, increased abundance of CFTR, AC, and cAMP under estrogen influence could account for the increased fluid accumulation within the cervical lumen, which would contribute to lower cervical mucus consistency, whereas progesterone reverses this effect at the molecular and organ level.
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Affiliation(s)
- Nurain Ismail
- Department of Physiology, Faculty of Medicine, University of Malaya, Lembah Pantai, Kuala Lumpur, Malaysia
| | - Nelli Giribabu
- Department of Physiology, Faculty of Medicine, University of Malaya, Lembah Pantai, Kuala Lumpur, Malaysia
| | - Sekaran Muniandy
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Lembah Pantai, Kuala Lumpur, Malaysia
| | - Naguib Salleh
- Department of Physiology, Faculty of Medicine, University of Malaya, Lembah Pantai, Kuala Lumpur, Malaysia
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deCatanzaro D. Sex steroids as pheromones in mammals: the exceptional role of estradiol. Horm Behav 2015; 68:103-16. [PMID: 25125222 DOI: 10.1016/j.yhbeh.2014.08.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 07/31/2014] [Accepted: 08/04/2014] [Indexed: 12/18/2022]
Abstract
This article is part of a Special Issue (Chemosignals and Reproduction). Whether from endogenous or exogenous sources, 17β-estradiol (E2) has very powerful influences over mammalian female reproductive physiology and behavior. Given its highly lipophilic nature and low molecular mass, E2 readily enters excretions and can be absorbed from exogenous sources via nasal, cutaneous, and other modes of exposure. Indeed, systemic injection of tritiated estradiol ((3)H-E2) into a male mouse or bat has been shown to produce significant levels of radioactivity in the reproductive tissues and brain of cohabiting female conspecifics. Bioactive E2 and other steroids are naturally found in male mouse urine and other excretions, and males actively direct their urine at proximate females. Very low doses of E2 can mimic the Bruce effect (disruption of peri-implantation pregnancy by novel males), the Vandenbergh effect (early reproductive maturation induced by novel males), and male-induced estrus and ovulation. Males' capacities to induce the Bruce and Vandenbergh effects can both be diminished by manipulations that reduce their urinary E2. Uterine dynamics during the Bruce and Vandenbergh effects are consistent with the actions of E2. Collectively, these data demonstrate a critical role of male-sourced E2 in these major mammalian pheromonal effects.
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Affiliation(s)
- Denys deCatanzaro
- Department of Psychology, Neuroscience & Behaviour, McMaster University, Hamilton, Ontario L8S 4K1, Canada.
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48
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Gardner DK. Lactate production by the mammalian blastocyst: manipulating the microenvironment for uterine implantation and invasion? Bioessays 2015; 37:364-71. [PMID: 25619853 PMCID: PMC4409083 DOI: 10.1002/bies.201400155] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The mammalian blastocyst exhibits a high capacity for aerobic glycolysis, a metabolic characteristic of tumours. It has been considered that aerobic glycolysis is a means to ensure a high carbon flux to fulfil biosynthetic demands. Here, alternative explanations for this pattern of metabolism are considered. Lactate creates a microenvironment of low pH around the embryo to assist the disaggregation of uterine tissues to facilitate trophoblast invasion. Further it is proposed that lactate acts as a signalling molecule (especially at the reduced oxygen tension present at implantation) to elicit bioactive VEGF recruitment from uterine cells, to promote angiogenesis. Finally it is suggested that the region of high lactate/low pH created by the blastocyst modulates the activity of the local immune response, helping to create immune tolerance. Consequently, the mammalian blastocyst offers a model to study the role of microenvironments, and how metabolites and pH are used in signalling.
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Affiliation(s)
- David K Gardner
- School of BioSciences, University of Melbourne, Melbourne, Australia
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Mohd Mokhtar H, Giribabu N, Kassim N, Muniandy S, Salleh N. Testosterone decreases fluid and chloride secretions in the uterus of adult female rats via down-regulating cystic fibrosis transmembrane regulator (CFTR) expression and functional activity. J Steroid Biochem Mol Biol 2014; 144 Pt B:361-72. [PMID: 25125390 DOI: 10.1016/j.jsbmb.2014.08.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Revised: 07/14/2014] [Accepted: 08/07/2014] [Indexed: 12/15/2022]
Abstract
OBJECTIVES Estrogen is known to stimulate uterine fluid and Cl(-) secretion via CFTR. This study investigated testosterone effect on these changes in a rat model. METHODS Ovariectomized adult female rats received estrogen for five days or estrogen for three days followed by two days peanut oil or testosterone either alone or in the presence of flutamide or finasteride. At the end of treatment, uteri were perfused with perfusate containing CFTRinh-172. The rate of fluid and Cl(-) secretion were determined. Dose-dependent effect of testosterone and effect of forskolin on fluid secretion rate were measured. Animals were sacrificed and uteri were removed for CFTR protein and mRNA expression analyses, histology and cAMP measurement. Morphology of uterus, levels of expression of CFTR protein and mRNA and distribution of CFTR protein were observed. RESULTS Estrogen causes increase while testosterone causes decrease in uterine fluid and Cl(-) secretions. The effects of estrogen but not testosterone were antagonized by CFTRinh-172. Luminal fluid volume and apical expression of CFTR in the luminal epithelia were highest under estrogen and lowest under testosterone influences. Similar changes were observed in CFTR protein and mRNA expressions. Uterine cAMP level was highest under estrogen and lowest under testosterone influence. Forskolin increases fluid secretion rate in estrogen but not in testosterone-treated animals. Testosterone effects were dose-dependent and were antagonized by flutamide however, not finasteride. CONCLUSIONS Testosterone inhibition of estrogen-induced uterine fluid and Cl(-) secretion occurs via inhibition of CFTR expression and functional activities. These changes could explain the adverse effects of testosterone on fertility.
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Affiliation(s)
- Helmy Mohd Mokhtar
- Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Nelli Giribabu
- Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Normadiah Kassim
- Department of Anatomy, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Sekaran Muniandy
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Naguib Salleh
- Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia.
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50
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Alsop TA, McLeod BJ, Butt AG. Variations in epithelial Na(+) transport and epithelial sodium channel localisation in the vaginal cul-de-sac of the brushtail possum, Trichosurus vulpecula, during the oestrous cycle. Reprod Fertil Dev 2014; 28:328-36. [PMID: 25056576 DOI: 10.1071/rd13277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 05/27/2014] [Indexed: 11/23/2022] Open
Abstract
The fluid in the vaginal cul-de-sac of the brushtail possum, Trichosurus vulpecula, is copious at ovulation when it may be involved in sperm transport or maturation, but is rapidly reabsorbed following ovulation. We have used the Ussing short-circuit current (Isc) technique and measurements of transcript and protein expression of the epithelial Na(+) channel (ENaC) to determine if variations in electrogenic Na(+) transport are associated with this fluid absorption. Spontaneous Isc (<20µAcm(-2) during anoestrus, 60-80µAcm(-2) in cycling animals) was inhibited by serosal ouabain. Mucosal amiloride (10µmolL(-1)), an inhibitor of ENaC, had little effect on follicular Isc but reduced luteal Isc by ~35%. This amiloride-sensitive Isc was dependent on mucosal Na(+) and the half-maximal inhibitory concentration (IC50)-amiloride (0.95μmolL(-1)) was consistent with ENaC-mediated Na(+) absorption. Results from polymerase chain reaction with reverse transcription (RT-PCR) indicate that αENaC mRNA is expressed in anoestrous, follicular and luteal phases. However, in follicular animals αENaC immunoreactivity in epithelial cells was distributed throughout the cytoplasm, whereas immunoreactivity was restricted to the apical pole of cells from luteal animals. These data suggest that increased Na(+) absorption contributes to fluid absorption during the luteal phase and is regulated by insertion of ENaC into the apical membrane of cul-de-sac epithelial cells.
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Affiliation(s)
- T-A Alsop
- Department of Physiology, Otago School of Medical Sciences, University of Otago, PO Box 56, Dunedin 9054, New Zealand
| | - B J McLeod
- AgResearch Invermay, Private Bag 50034 Mosgiel 9053, New Zealand
| | - A G Butt
- Department of Physiology, Otago School of Medical Sciences, University of Otago, PO Box 56, Dunedin 9054, New Zealand
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