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Lu C, Luo H, Wang Y, Jing S, Zhao J, Zou K, Wu F, Ying H. Regulation of PDGFRα + cells and ICC in progesterone-mediated slow colon transit in pregnant mice. Heliyon 2024; 10:e25227. [PMID: 38333873 PMCID: PMC10850515 DOI: 10.1016/j.heliyon.2024.e25227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 12/22/2023] [Accepted: 01/23/2024] [Indexed: 02/10/2024] Open
Abstract
Background Progesterone can inhibit intestinal smooth muscle contraction; however, the specific mechanism remains unclear. Besides smooth muscle cells, smooth muscle has two important mesenchymal cells, namely interstitial cells of Cajal (ICC) and PDGFRα+ cells, which induce the contraction and relaxation of smooth muscles. We aimed to explore the regulation of PDGFRα+ cells and ICC in progesterone-mediated colon slow transit in pregnant mice. Methods Colon transit experiments were performed in vivo and in vitro to observe slow colon transit. The expression of PDGFRα and c-KIT was detected by Western blot, RT-PCR, and immunofluorescence. An isometric tension experiment was performed to investigate smooth muscle contractions. Results The colon transit time in pregnant mice was longer than that in non-pregnant mice. Progesterone significantly blocks colonic smooth muscle contractions. However, when the relaxation and contraction of PDGFRα+ cells and ICC are blocked, progesterone cannot inhibit smooth muscle contraction. When the function of only PDGFRα+ cells are blocked, progesterone has a more obvious inhibitory effect on smooth muscle in the non-pregnant group than that in the pregnant group. However, when ICC alone was blocked, progesterone inhibited smooth muscle contractions more clearly in pregnant mice. The protein and mRNA expression of PDGFRα was higher and c-KIT was lower in pregnant mice. PDGFRα+ cells and ICC from smooth muscle all co-localize progesterone receptors. Conclusions Under the regulation of progesterone, the relaxation function of PDGFRα+ cells is enhanced and the contraction function of ICC is weakened, leading to the slow colon transit of pregnant mice.
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Affiliation(s)
- Chen Lu
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
- Hospital and Institute of Obstetrics and Gynecology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Hui Luo
- Department of Obstetrics and Gynecology, International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200030, China
| | - Ye Wang
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Shuang Jing
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Jun Zhao
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Kexin Zou
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Fan Wu
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Hao Ying
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
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Al-Shboul OA, Mustafa AG, Omar AA, Al-Dwairi AN, Alqudah MA, Nazzal MS, Alfaqih MA, Al-Hader RA. Effect of progesterone on nitric oxide/cyclic guanosine monophosphate signaling and contraction in gastric smooth muscle cells. Biomed Rep 2018; 9:511-516. [PMID: 30546879 DOI: 10.3892/br.2018.1161] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 10/10/2018] [Indexed: 01/22/2023] Open
Abstract
Previous studies have shown that progesterone could inhibit muscle contraction in various sites of the gastrointestinal tract. The underlying mechanisms responsible for these inhibitory effects of progesterone are not fully known. The aim of the current study was to investigate the effect of progesterone on the nitric oxide (NO)/cyclic guanosine monophosphate (cGMP) pathway and muscle contraction in the stomach. Single gastric smooth muscle cells from female Sprague-Dawley rats were used. The expression of progesterone receptor (PR) mRNA was analyzed by reverse transcription polymerase chain reaction. NO and cGMP levels were measured via specific ELISAs. Acetylcholine (ACh)-induced contraction of single gastric muscle cells preincubated with progesterone was measured via scanning micrometry in the presence or absence of the NO synthase inhibitor, Nω-Nitro-L-arginine (L-NNA), or guanylyl cyclase inhibitor, 1H-[1,2,4]Oxadiazolo[4,3-a]quinoxalin-1-one (ODQ), and expressed as percent shortening from resting cell length. PR expression was detected in the stomach muscle cells. Progesterone inhibited ACh-induced gastric muscle cell contraction. Furthermore, progesterone increased NO and cGMP levels in single gastric muscle cells. Most notably, pre-incubation of muscle cells with either L-NNA or ODQ abolished the inhibitory action of progesterone on muscle contraction. These present observations suggest that progesterone promotes muscle cell relaxation in the stomach potentially via the NO/cGMP pathway.
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Affiliation(s)
- Othman A Al-Shboul
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Ayman G Mustafa
- Department of Anatomy, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Amal Abu Omar
- Department of Anatomy, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Ahmed N Al-Dwairi
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Mohammad A Alqudah
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Mona S Nazzal
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Mahmoud A Alfaqih
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Rami A Al-Hader
- Department of Physiology and Biochemistry, Princess Basma Teaching Hospital, Faculty of Medicine, Jordan University of Science and Technology, Irbid 21110, Jordan
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Chin S. Visual vertigo: Vertigo of oculomotor origin. Med Hypotheses 2018; 116:84-95. [PMID: 29857916 DOI: 10.1016/j.mehy.2018.04.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 04/25/2018] [Accepted: 04/30/2018] [Indexed: 01/28/2023]
Abstract
Since Róbert Bárány proposed his hypothesis on vestibulo-ocular reflex (VOR), dizziness associated with vertigo has been interpreted as being vestibular in origin. However, there have been many contradictory findings showing modulations of VOR, which have caused confusion as to VOR's role and accuracy. Further, there seems to be an influence of VOR when the anatomical inner ear structures are congenitally absent. Many people report vertiginous symptoms when they are exposed to visually challenging situations. These people with visually induced vertigo are usually found to have only mildly abnormal labyrinthine findings. Accurate visual information via binocular vision in animals, including humans, is important for the survival. Understanding how visual information is used in balance can help us to apply a different approach to the mechanism of vertigo. This article will review how accurate binocular viewing is possible for precise images through a complex oculomotor system and the proprioceptive senses of the external ocular muscles (EOMs). The proprioceptive senses from EOMs appear to affect motor efferents of the body. Oculomotor activities during viewing are important not just for learning but also for executing whole body motor responses. An error in the oculomotor afferents will cause a reaction to the error signal. This can be troubling for proper balancing during movement. Especially, common oculomotor causes (including fatigue of EOMs which is common in today's lifestyle) can contribute to many vertiginous conditions.
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Affiliation(s)
- Seong Chin
- Advocate Lutheran General Hospital, Department of Medicine, 1775 Dempster Street, Park Ridge, Illinois 60068, USA.
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4
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Baumgartner C, Hubacher T, Krayer M, Gschossmann J. In vitro spontaneous contractile activity of colonic smooth muscle in naive Lewis rats: Acute effect of gonadal hormones. J Dig Dis 2017; 18:13-22. [PMID: 28009091 DOI: 10.1111/1751-2980.12438] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 12/07/2016] [Accepted: 12/15/2016] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Functional gastrointestinal disorders affect females more often. Changes in colonic motility may be etiological co-factors for the clinical symptoms. The aim of the present study was to analyze the influence of gonadal hormones on colonic contractile activity. METHODS In vitro measurements of colonic contractile activity in longitudinal smooth muscle strips of female and male Lewis rats were performed in an organ chamber experiment. After the administration of a gonadal hormone estradiol [EST], progesterone [PROG] and testosterone [TEST]) or ethanol solution as control, stimulation with acetylcholine (ACh) or inhibition with norepinephrine (NE) was performed. RESULTS Compared to the smooth muscle strips of male rats, significantly higher spontaneous colonic contractile activity (SCCA) was observed in female animals. Increasing doses of ACh showed the progressive stimulation of SCCA whereas rising doses of NE resulted in a stepwise inhibition of SCCA, respectively. EST superfusion displayed an inhibitory effect on SCCA in both sexes and inhibited the ACh effect in female rats. Similarly, acute superfusion with high-dose PROG inhibited SCCA in females. Acute TEST superfusion inhibited SCCA in males and led to significant higher colonic contractile activity in males following subsequent stimulation with ACh. In female rats, the inhibitory effect of NE was reduced by prior exposure to TEST. CONCLUSION In our in vitro study the acute exposure of colonic smooth muscle tissue to gonadal hormones led to sex-dependent changes in SCCA and translated in a modified response of smooth muscle strips to both pro-contractile and anti-contractile neurotransmitters.
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Affiliation(s)
- Christine Baumgartner
- Department of Visceral Surgery and Medicine, University Hospital of Berne, Bern, Switzerland.,Department of Clinical Research, University Hospital of Berne, Bern, Switzerland
| | - Thomas Hubacher
- Department of Visceral Surgery and Medicine, University Hospital of Berne, Bern, Switzerland.,Department of Clinical Research, University Hospital of Berne, Bern, Switzerland
| | - Magali Krayer
- Department of Visceral Surgery and Medicine, University Hospital of Berne, Bern, Switzerland.,Department of Clinical Research, University Hospital of Berne, Bern, Switzerland
| | - Juergen Gschossmann
- Department of Visceral Surgery and Medicine, University Hospital of Berne, Bern, Switzerland.,Department of Clinical Research, University Hospital of Berne, Bern, Switzerland.,Department of Internal Medicine, Forchheim Clinic, Forchheim, Germany
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5
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Feiteiro J, Mariana M, Verde I, Cairrão E. Genomic and Nongenomic Effects of Mifepristone at the Cardiovascular Level: A Review. Reprod Sci 2016; 24:976-988. [DOI: 10.1177/1933719116671002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Joana Feiteiro
- Centro de Investigação em Ciências da Saúde, University of Beira Interior, Covilhã, Portugal
| | - Melissa Mariana
- Centro de Investigação em Ciências da Saúde, University of Beira Interior, Covilhã, Portugal
| | - Ignacio Verde
- Centro de Investigação em Ciências da Saúde, University of Beira Interior, Covilhã, Portugal
| | - Elisa Cairrão
- Centro de Investigação em Ciências da Saúde, University of Beira Interior, Covilhã, Portugal
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6
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Gevaert T, Rietjens R, Voets T, Everaerts W, De Ridder D. Topographies and isoforms of the progesterone receptor in female human, rat and mouse bladder. Cell Tissue Res 2015; 364:385-94. [PMID: 26650465 DOI: 10.1007/s00441-015-2329-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Accepted: 11/10/2015] [Indexed: 10/22/2022]
Abstract
Steroid hormones such as progesterone are known to influence bladder function. Progesterone effects are mediated by the progesterone receptor (PR) but no detailed studies of PR in bladder exist. We have investigated the presence, topography and subtypes of PR in mouse, rat and human bladder. Fresh tissue samples were obtained from cystectomies in female humans, rats and mice (n = 7 per group). Tissue samples were processed for immunohistochemistry (IHC), immunofluorescence (IF) and western blot (WB) and, for each species, a panel of specific PR antibody clones was used. Interpretation of IHC/IF was carried out by light/fluorescent microscopy and of WB via standard WB software. IHC/IF in female human bladder showed PR on the interstitial cells in the lamina propria and between detrusor smooth muscle cells, whereas in female rat and mouse bladder, PR was only found on the urothelium. WB in human bladder showed a 78-kD and a 60-kDa band, respectively, corresponding to a modified PR isoform A and PR isoform C. WB in rat and mice bladder showed a 60 kDa band and a 37 kDa band, respectively corresponding with PR isoform C and an unknown isoform. This is the first detailed investigation of the precise location and presence of several isoforms of PR in bladder, together with a comparison of these data between human, rat and mouse. Our study has revealed complex PR families in bladders from the various species studied and demonstrates obvious inter-species differences in PR topography and isoforms.
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Affiliation(s)
- Thomas Gevaert
- Laboratory of Experimental Urology, Department of Development and Regeneration, KU Leuven, Herestraat 49, 3000, Leuven, Belgium.
- Translational Cell and Tissue Research, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium.
- Department of Pathology, AZ Klina, Brasschaat, Belgium.
| | - Roma Rietjens
- Laboratory of Experimental Urology, Department of Development and Regeneration, KU Leuven, Herestraat 49, 3000, Leuven, Belgium
- Laboratory of Ion Channel Research and TRP Research Platform Leuven (TRPLe), KU Leuven, Leuven, Belgium
| | - Thomas Voets
- Laboratory of Ion Channel Research and TRP Research Platform Leuven (TRPLe), KU Leuven, Leuven, Belgium
| | - Wouter Everaerts
- Laboratory of Experimental Urology, Department of Development and Regeneration, KU Leuven, Herestraat 49, 3000, Leuven, Belgium
- Laboratory of Ion Channel Research and TRP Research Platform Leuven (TRPLe), KU Leuven, Leuven, Belgium
| | - Dirk De Ridder
- Laboratory of Experimental Urology, Department of Development and Regeneration, KU Leuven, Herestraat 49, 3000, Leuven, Belgium
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Fernandes VS, Ribeiro ASF, Martínez-Sáenz A, Blaha I, Serrano-Margüello D, Recio P, Martínez AC, Bustamante S, Vázquez-Alba D, Carballido J, García-Sacristán A, Hernández M. Underlying mechanisms involved in progesterone-induced relaxation to the pig bladder neck. Eur J Pharmacol 2014; 723:246-52. [PMID: 24296318 DOI: 10.1016/j.ejphar.2013.11.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 11/12/2013] [Accepted: 11/22/2013] [Indexed: 10/25/2022]
Abstract
Progesterone increases bladder capacity and improves the bladder compliance by its relaxant action on the detrusor. A poor information, however, exists concerning to the role of this steroid hormone on the bladder outflow region contractility. This study investigates the progesterone-induced action on the smooth muscle tension of the pig bladder neck. To this aim, urothelium-denuded bladder neck strips were mounted in myographs for isometric force recordings and for simultaneous measurements of intracellular Ca(2+) concentration ([Ca(2+)]i) and tension. On phenylephrine (PhE)-precontracted strips, progesterone produced concentration-dependent relaxations only at high pharmacological concentrations. The blockade of progesterone receptors, nitric oxide (NO) synthase, guanylyl cyclase, large conductance Ca(2+)-activated K(+) (BKCa) or ATP-dependent K(+) (KATP) channels reduced the progesterone relaxations. The presence of the urothelium and the inhibition of cyclooxygenase (COX), intermediate- and small-conductance Ca(2+)-activated K(+) channels failed to modify these responses. In Ca(2+)-free potassium rich physiological saline solution, progesterone inhibited the contraction to CaCl2 and to the L-type voltage-operated Ca(2+) (VOC) channel activator BAY-K 8644. Relaxation induced by progesterone was accompanied by simultaneous decreases in smooth muscle [Ca(2+)]i. These results suggest that progesterone promotes relaxation of pig bladder neck through smooth muscle progesterone receptors via cGMP/NO pathway and involving the activation of BKCa and KATP channels and inhibition of the extracellular Ca(2+) entry through L-type VOC channels.
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Affiliation(s)
- Vítor S Fernandes
- Departamento de Fisiología, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Ana S F Ribeiro
- Departamento de Fisiología, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Ana Martínez-Sáenz
- Unidad Experimental, Fundación de Investigación Biomédica, Hospital Universitario Puerta de Hierro-Majadahonda, 28222 Madrid, Spain
| | - Igor Blaha
- Departamento de Urología, Hospital General Universitario Gregorio Marañón, 28007 Madrid, Spain
| | - Daniel Serrano-Margüello
- Departamento de Fisiología, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Paz Recio
- Departamento de Fisiología, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Ana Cristina Martínez
- Departamento de Fisiología, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Salvador Bustamante
- Departamento de Urología, Hospital Universitario Puerta de Hierro-Majadahonda, 28222 Madrid, Spain
| | - David Vázquez-Alba
- Departamento de Urología, Hospital Universitario Puerta de Hierro-Majadahonda, 28222 Madrid, Spain
| | - Joaquín Carballido
- Departamento de Urología, Hospital Universitario Puerta de Hierro-Majadahonda, 28222 Madrid, Spain
| | - Albino García-Sacristán
- Departamento de Fisiología, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Medardo Hernández
- Departamento de Fisiología, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain.
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Al-Shboul O, Mustafa A, Al-hashimi F. Non-genomic effects of progesterone on Rho kinase II in rat gastric smooth muscle cells. J Smooth Muscle Res 2013; 49:55-62. [PMID: 24133695 PMCID: PMC5137272 DOI: 10.1540/jsmr.49.55] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Various studies have shown that pregnancy is associated with gastrointestinal complaints
that might result from disturbance of the normal contractile pattern of smooth muscle.
Progesterone is an important steroid hormone, which plays a crucial role in female
pregnancy. Progesterone affects muscle cells by genomic mechanisms, through nuclear
receptors, and non-genomic mechanisms, through unidentified pathways. Non-genomic actions
were defined as those occurring within 10 min of progesterone exposure. The aim of the
present study was to investigate the non-genomic effect of progesterone on Rho kinase II
activity in gastric smooth muscle. Single smooth muscle cells of the stomach obtained from
Sprague Dawley rats were used. Dispersed gastric smooth muscle cells were treated with
progesterone or acetylcholine (ACh) separately. Cells designated for progesterone
treatment were incubated with 1 μM progesterone for 10 min. Rho kinase II expression and
both basal and ACh-induced Rho kinase II activity were measured via specifically designed
enzyme-linked immunosorbent assay (ELISA) and activity assay kits respectively in both
control and progesterone-treated groups. Progesterone inhibited the ACh-induced, but not
the basal, Rho kinase II activity in dispersed gastric smooth muscle cells without
affecting its expression level. This study suggested that progesterone can rapidly affect
the contractile activity of isolated gastric smooth muscle cells in rats via inhibition of
the Rho kinase II pathway.
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9
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Thomas P. Rapid steroid hormone actions initiated at the cell surface and the receptors that mediate them with an emphasis on recent progress in fish models. Gen Comp Endocrinol 2012; 175:367-83. [PMID: 22154643 PMCID: PMC3264783 DOI: 10.1016/j.ygcen.2011.11.032] [Citation(s) in RCA: 123] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Revised: 11/17/2011] [Accepted: 11/18/2011] [Indexed: 02/06/2023]
Abstract
In addition to the classic genomic mechanism of steroid action mediated by activation of intracellular nuclear receptors, there is now extensive evidence that steroids also activate receptors on the cell surface to initiate rapid intracellular signaling and biological responses that are often nongenomic. Recent progress in our understanding of rapid, cell surface-initiated actions of estrogens, progestins, androgens and corticosteroids and the identities of the membrane receptors that act as their intermediaries is briefly reviewed with a special emphasis on studies in teleost fish. Two recently discovered novel proteins with seven-transmembrane domains, G protein-coupled receptor 30 (GPR30), and membrane progestin receptors (mPRs) have the ligand binding and signaling characteristics of estrogen and progestin membrane receptors, respectively, but their functional significance is disputed by some researchers. GPR30 is expressed on the cell surface of fish oocytes and mediates estrogen inhibition of oocyte maturation. mPRα is also expressed on the oocyte cell surface and is the intermediary in progestin induction of oocyte maturation in fish. Recent results suggest there is cross-talk between these two hormonal pathways and that there is reciprocal down-regulation of GPR30 and mPRα expression by estrogens and progestins at different phases of oocyte development to regulate the onset of oocyte maturation. There is also evidence in fish that mPRs are involved in progestin induction of sperm hypermotility and anti-apoptotic actions in ovarian follicle cells. Nonclassical androgen and corticosteroid actions have also been described in fish models but the membrane receptors mediating these actions have not been identified.
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Affiliation(s)
- Peter Thomas
- The University of Texas at Austin, Marine Science Institute, 750 Channel View Drive, Port Aransas, TX 78373, USA.
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10
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Soloff MS, Jeng YJ, Izban MG, Sinha M, Luxon BA, Stamnes SJ, England SK. Effects of progesterone treatment on expression of genes involved in uterine quiescence. Reprod Sci 2011; 18:781-97. [PMID: 21795739 PMCID: PMC4051400 DOI: 10.1177/1933719111398150] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
An important action of progesterone during pregnancy is to maintain the uterus in a quiescent state and thereby prevent preterm labor. The causes of preterm labor are not well understood, so progesterone action on the myometrium can provide clues about the processes that keep the uterus from contracting prematurely. Accordingly, we have carried out Affymetrix GeneChip analysis of progesterone effects on gene expression in immortalized human myometrial cells cultured from a patient near the end of pregnancy. Progesterone appears to inhibit uterine excitability by a number of mechanisms, including increased expression of calcium and voltage-operated K(+) channels, which dampens the electrical activity of the myometrial cell, downregulation of agents, and receptors involved in myometrial contraction, reduction in cell signal components that lead to increased intracellular Ca(2+) concentrations in response to contractile stimuli, and downregulation of proteins involved in the cross-linking of actin and myosin filaments to produce uterine contractions.
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Affiliation(s)
- Melvyn S. Soloff
- Department of Obstetrics and Gynecology, University of Texas Medical Branch, Galveston, TX, USA
| | - Yow-Jiun Jeng
- Department of Obstetrics and Gynecology, University of Texas Medical Branch, Galveston, TX, USA
| | - Michael G. Izban
- Department of Obstetrics and Gynecology, Meharry Medical College, Nashville, TN, USA
| | - Mala Sinha
- Department of Biochemistry and Molecular Biology, and the Sealy Center for Molecular Medicine, University of Texas Medical Branch, Galveston, TX, USA
| | - Bruce A. Luxon
- Department of Biochemistry and Molecular Biology, and the Sealy Center for Molecular Medicine, University of Texas Medical Branch, Galveston, TX, USA
| | - Susan J. Stamnes
- Department of Molecular Physiology and Biophysics, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Sarah K. England
- Department of Molecular Physiology and Biophysics, University of Iowa Carver College of Medicine, Iowa City, IA, USA
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11
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Marino M, Masella R, Bulzomi P, Campesi I, Malorni W, Franconi F. Nutrition and human health from a sex-gender perspective. Mol Aspects Med 2011; 32:1-70. [PMID: 21356234 DOI: 10.1016/j.mam.2011.02.001] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 01/25/2011] [Accepted: 02/18/2011] [Indexed: 02/07/2023]
Abstract
Nutrition exerts a life-long impact on human health, and the interaction between nutrition and health has been known for centuries. The recent literature has suggested that nutrition could differently influence the health of male and female individuals. Until the last decade of the 20th century, research on women has been neglected, and the results obtained in men have been directly translated to women in both the medicine and nutrition fields. Consequently, most modern guidelines are based on studies predominantly conducted on men. However, there are many sex-gender differences that are the result of multifactorial inputs, including gene repertoires, sex steroid hormones, and environmental factors (e.g., food components). The effects of these different inputs in male and female physiology will be different in different periods of ontogenetic development as well as during pregnancy and the ovarian cycle in females, which are also age dependent. As a result, different strategies have evolved to maintain male and female body homeostasis, which, in turn, implies that there are important differences in the bioavailability, metabolism, distribution, and elimination of foods and beverages in males and females. This article will review some of these differences underlying the impact of food components on the risk of developing diseases from a sex-gender perspective.
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Affiliation(s)
- Maria Marino
- Department of Biology, University Roma Tre, Viale Guglielmo Marconi 446, I-00146 Roma, Italy
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Abstract
BACKGROUND AND AIM The incidence of gallbladder stones is higher in women during pregnancy than in men. Progesterone can inhibit gallbladder motility and facilitate gallstone formation. However, the ionic mechanisms have not been fully illuminated. This study sought to investigate the effects of progesterone on L-type calcium currents and voltage-dependent potassium currents in gallbladder smooth muscle cells. METHODS Gallbladder smooth muscle cells were isolated by enzymatic digestion from adult guinea pigs. Ionic currents were recorded by the whole-cell patch clamp method. RESULTS Progesterone inhibited L-type calcium currents in a concentration-dependent manner. The characteristic of current-voltage curve was not significantly altered. The amplitude of calcium currents was gradually suppressed, reached a steady-state level within 4-6 min, and restored partly after washout. In the presence of protein kinase A (PKA) inhibitor, Rp-cAMP, the inhibitory effect induced by progesterone was apparently attenuated, whereas forskolin, a direct activator of adenylate cyclase, could suppress L-type calcium channel. However, progesterone did not significantly affect voltage-dependent potassium currents. CONCLUSIONS Progesterone inhibits L-type calcium channel by cAMP/PKA pathway in gallbladder smooth muscle cells. This may be an important mechanism for the gallbladder hypomotility induced by progesterone.
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Affiliation(s)
- Zhixuan Wu
- Department of Gastroenterology, The Second Affiliated Hospital, Chonqing Medical Universtity, Chonqing, China
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13
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Chen R, Tu Y, Lin J, She W, Li J, Wu Z, Xu L, Chen H. The nongenomic effects of progesterone in repressing iNOS activation through P38MAPK pathways in gonococci-infected polymorphonuclear leukocytes and the clinical significance. ACTA ACUST UNITED AC 2010; 30:119-25. [PMID: 20155468 DOI: 10.1007/s11596-010-0122-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2009] [Indexed: 11/30/2022]
Abstract
Progesterone has nongenomic effects on inducible nitric oxide synthase (iNOS), which is mediated by mitogen activated protein kinase (MAPK) pathways. This effect is supposed to have some potential association with asymptomatic gonococcal infections in women by immunological depression. In this study, polymorphonuclear leukocytes (PMNs) challenged by gonococci were used to study the nongenomic effects of progesterone. The activation of iNOS was assessed by measuring [(3)H] L-arginine converses to [(3)H] L-citrulline, and the activity of MAPK was detected by Western blot. It was found that the activity of iNOS and the yields of NO were enhanced significantly in gonococci-challenged PMNs compared with the controls (P<0.01). Progesterone could repress the activation of iNOS through P38MAPK pathway within PMNs (P<0.05), which could be blocked by SB203580 (P<0.01), but not by actinomycin D (P>0.05). It was also found subsequently that in the serum specimens collected from gonococci-infected but asymptomatic women, the progesterone level was higher than that in women with severe symptoms (P<0.01). Moreover, the yield of NO had an inverse correlation with progesterone. With these results it suggested that the rapid nongenomic effects of progesterone may inhibit iNOS activation and NO yields mediated by P38MAPK pathways, which were supposed to be concerned with asymptomatic women infected with gonococci.
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Affiliation(s)
- Rongyi Chen
- Department of Dermatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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Rao SSC. Constipation: evaluation and treatment of colonic and anorectal motility disorders. Gastrointest Endosc Clin N Am 2009; 19:117-39, vii. [PMID: 19232284 DOI: 10.1016/j.giec.2008.12.006] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This article focuses on the colonic and anorectal motility disturbances that are associated with chronic constipation and their management. Functional chronic constipation consists of three overlapping subtypes: slow transit constipation, dyssynergic defecation, and irritable bowel syndrome with constipation. The Rome criteria may serve as a useful guide for making a clinical diagnosis of functional constipation. Today, an evidence-based approach can be used to treat patients with chronic constipation. The availability of specific drugs for the treatment of chronic constipation, such as tegaserod and lubiprostone, has enhanced the therapeutic armamentarium for managing these patients. Randomized controlled trials have also established the efficacy of biofeedback therapy in the treatment of dyssynergic defecation.
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Affiliation(s)
- Satish S C Rao
- Division of Gastroenterology & Hepatology, Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA, USA.
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Heitkemper M, Jarrett M. Irritable bowel syndrome: does gender matter? J Psychosom Res 2008; 64:583-7. [PMID: 18501258 DOI: 10.1016/j.jpsychores.2008.02.020] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2007] [Revised: 02/05/2008] [Accepted: 02/07/2008] [Indexed: 02/07/2023]
Abstract
In industrialized parts of the world, women seek health care services for irritable bowel syndrome (IBS) more frequently than men. The role of gender in IBS is likely multifactorial involving inherent physiological differences in gonadal hormones, stress reactivity, and inflammatory responses, as well as sociocultural differences in response to pain and/or bowel pattern changes. This mini-review in particular addresses gender differences in visceral sensitivity, motility, and autonomic nervous system balance as potential factors contributing to gender differences in IBS presentation.
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Affiliation(s)
- Margaret Heitkemper
- Department of Biobehavioral Nursing and Health Systems, University of Washington, Seattle, WA 98195, USA.
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Rao SSC. Constipation: evaluation and treatment of colonic and anorectal motility disorders. Gastroenterol Clin North Am 2007; 36:687-711, x. [PMID: 17950444 DOI: 10.1016/j.gtc.2007.07.013] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This article focuses on the colonic and anorectal motility disturbances that are associated with chronic constipation and their management. Functional chronic constipation consists of three overlapping subtypes: slow transit constipation, dyssynergic defecation, and irritable bowel syndrome with constipation. The Rome criteria may serve as a useful guide for making a clinical diagnosis of functional constipation. Today, an evidence-based approach can be used to treat patients with chronic constipation. The availability of specific drugs for the treatment of chronic constipation, such as tegaserod and lubiprostone, has enhanced the therapeutic armamentarium for managing these patients. Randomized controlled trials have also established the efficacy of biofeedback therapy in the treatment of dyssynergic defecation.
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Affiliation(s)
- Satish S C Rao
- Division of Gastroenterology & Hepatology, Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA, USA.
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