1
|
Wu J, Kong S, Guo C, Wang J, Lu J, Jiang R, Wang H. An exaggerated epinephrine-adrenergic receptor signaling impairs uterine decidualization in mice. Reprod Toxicol 2019; 90:109-117. [PMID: 31520687 DOI: 10.1016/j.reprotox.2019.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 09/09/2019] [Accepted: 09/10/2019] [Indexed: 11/25/2022]
Abstract
Our understanding of the relationship between stress-derived epinephrine and early pregnancy failure remains incomplete. Here, we explored the effect of epinephrine exposure on early pregnancy and pseudopregnancy in mice. Increased expression of adrenergic receptors Adra1b, Adra2b and Adrb2 was observed during decidualization and post-implantation embryogenesis was delayed or survival impaired. Epinephrine treatment also impaired decidualization in both the gravid and pseudopregnant uterus, suggesting the effect on decidualization was independent of the conceptus. This included a suppression of endometrial stroma cell proliferation and of key decidualization regulators, including COX2, BMP2 and WNT4. Collectively, these data demonstrate that maternal epinephrine exposure during early pregnancy impairs uterine decidualization and embryo development, underlying early pregnancy failure.
Collapse
Affiliation(s)
- Jinxiang Wu
- The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, People's Republic of China
| | - Shuangbo Kong
- Reproductive Medical Center, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian, People's Republic of China; Fujian Provincial Key Laboratory of Reproductive Health Research, School of Medicine, Xiamen University, Xiamen, Fujian, People's Republic of China
| | - Chuanhui Guo
- Fujian Provincial Key Laboratory of Reproductive Health Research, School of Medicine, Xiamen University, Xiamen, Fujian, People's Republic of China
| | - Jianqi Wang
- Fujian Provincial Key Laboratory of Reproductive Health Research, School of Medicine, Xiamen University, Xiamen, Fujian, People's Republic of China
| | - Jinhua Lu
- Reproductive Medical Center, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian, People's Republic of China; Fujian Provincial Key Laboratory of Reproductive Health Research, School of Medicine, Xiamen University, Xiamen, Fujian, People's Republic of China
| | - Ruiwei Jiang
- Reproductive Medical Center, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian, People's Republic of China; Fujian Provincial Key Laboratory of Reproductive Health Research, School of Medicine, Xiamen University, Xiamen, Fujian, People's Republic of China.
| | - Haibin Wang
- The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, People's Republic of China; Reproductive Medical Center, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian, People's Republic of China; Fujian Provincial Key Laboratory of Reproductive Health Research, School of Medicine, Xiamen University, Xiamen, Fujian, People's Republic of China.
| |
Collapse
|
2
|
Lebbe EKM, Tytgat J. In the picture: disulfide-poor conopeptides, a class of pharmacologically interesting compounds. J Venom Anim Toxins Incl Trop Dis 2016; 22:30. [PMID: 27826319 PMCID: PMC5100318 DOI: 10.1186/s40409-016-0083-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 09/27/2016] [Indexed: 12/19/2022] Open
Abstract
During evolution, nature has embraced different strategies for species to survive. One strategy, applied by predators as diverse as snakes, scorpions, sea anemones and cone snails, is using venom to immobilize or kill a prey. This venom offers a unique and extensive source of chemical diversity as it is driven by the evolutionary pressure to improve prey capture and/or to protect their species. Cone snail venom is an example of the remarkable diversity in pharmacologically active small peptides that venoms can consist of. These venom peptides, called conopeptides, are classified into two main groups based on the number of cysteine residues, namely disulfide-rich and disulfide-poor conopeptides. Since disulfide-poor conotoxins are minor components of this venom cocktail, the number of identified peptides and the characterization of these peptides is far outclassed by its cysteine-rich equivalents. This review provides an overview of 12 families of disulfide-poor peptides identified to date as well as the state of affairs.
Collapse
Affiliation(s)
- Eline K M Lebbe
- Toxicology and Pharmacology, KU Leuven, O&N2, Box 922, Herestraat 49, 3000 Leuven, Belgium
| | - Jan Tytgat
- Toxicology and Pharmacology, KU Leuven, O&N2, Box 922, Herestraat 49, 3000 Leuven, Belgium
| |
Collapse
|
3
|
Dutertre S, Lumsden NG, Alewood PF, Lewis RJ. Isolation and characterisation of conomap-Vt, ad-amino acid containing excitatory peptide from the venom of a vermivorous cone snail. FEBS Lett 2006; 580:3860-6. [PMID: 16797543 DOI: 10.1016/j.febslet.2006.06.011] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2006] [Revised: 05/22/2006] [Accepted: 06/02/2006] [Indexed: 11/19/2022]
Abstract
Cone snail venom is a rich source of bioactives, in particular small disulfide rich peptides that disrupt synaptic transmission. Here, we report the discovery of conomap-Vt (Conp-Vt), an unusual linear tetradecapeptide isolated from Conus vitulinus venom. The sequence displays no homology to known conopeptides, but displays significant homology to peptides of the MATP (myoactive tetradecapeptide) family, which are important endogenous neuromodulators in molluscs, annelids and insects. Conp-Vt showed potent excitatory activity in several snail isolated tissue preparations. Similar to ACh, repeated doses of Conp-Vt were tachyphylactic. Since nicotinic and muscarinic antagonists failed to block its effect and Conp-Vt desensitised tissue remained responsive to ACh, it appears that Conp-Vt contractions were non-cholinergic in origin. Finally, biochemical studies revealed that Conp-Vt is the first member of the MATP family with a d-amino acid. Interestingly, the isomerization of L-Phe to D-Phe enhanced biological activity, suggesting that this post-translational modified conopeptide may have evolved for prey capture.
Collapse
Affiliation(s)
- Sébastien Dutertre
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, 4072 Qld, Australia
| | | | | | | |
Collapse
|
4
|
Neuhaus J, Oberbach A, Schwalenberg T, Stolzenburg JU. Cultured smooth muscle cells of the human vesical sphincter are more sensitive to histamine than are detrusor smooth muscle cells. Urology 2006; 67:1086-92. [PMID: 16635523 DOI: 10.1016/j.urology.2005.11.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2005] [Revised: 10/11/2005] [Accepted: 11/09/2005] [Indexed: 11/24/2022]
Abstract
OBJECTIVES To compare histamine receptor expression in cultured smooth muscle cells from the human detrusor and internal sphincter using receptor-specific agonists. METHODS Smooth muscle cells from the bladder dome and internal sphincter were cultured from 5 male patients undergoing cystectomy for bladder cancer therapy. Calcium transients in cells stimulated with carbachol, histamine, histamine receptor 1 (H1R)-specific heptanecarboxamide (HTMT), dimaprit (H2R), and R-(alpha)-methylhistamine (H3R) were measured by calcium imaging. Histamine receptor proteins were detected by Western blot analysis and immunocytochemistry. RESULTS H1R, H2R, and H3R expression was found in tissue and cultured cells. Carbachol stimulated equal numbers of detrusor and sphincter cells (60% and 51%, respectively). Histamine stimulated significantly more cells than carbachol in detrusor (100%) and sphincter (99.34%) cells. Calcium responses to carbachol in detrusor and sphincter cells were comparable and did not differ from those to histamine in detrusor cells. However, histamine and specific agonists stimulated more sphincter cells than did carbachol (P <0.001), and the calcium increase was greater in sphincter cells than in detrusor cells. Single cell analysis revealed comparable H2R responses in detrusor and sphincter cells, but H1R and H3R-mediated calcium reactions were significantly greater in sphincter cells. CONCLUSIONS Histamine very effectively induces calcium release in smooth muscle cells. In sphincter cells, histamine is even more effective than carbachol regarding the number of reacting cells and the intracellular calcium increase. Some of the variability in the outcome of antihistaminic interstitial cystitis therapies might be caused by the ineffectiveness of the chosen antihistaminic or unintentional weakening of sphincteric function.
Collapse
MESH Headings
- Calcium/metabolism
- Carbachol/pharmacology
- Cells, Cultured
- Cystectomy
- Histamine/analogs & derivatives
- Histamine/pharmacology
- Histamine Agonists/pharmacology
- Humans
- Male
- Myocytes, Smooth Muscle/metabolism
- Receptors, Histamine/drug effects
- Receptors, Histamine/metabolism
- Receptors, Histamine H1/drug effects
- Receptors, Histamine H1/metabolism
- Receptors, Histamine H2/drug effects
- Receptors, Histamine H2/metabolism
- Receptors, Histamine H3/drug effects
- Receptors, Histamine H3/metabolism
- Urinary Bladder/cytology
- Urinary Bladder/metabolism
- Urinary Bladder Neoplasms
Collapse
Affiliation(s)
- Jochen Neuhaus
- Department of Urology, University of Leipzig, Leipzig, Germany.
| | | | | | | |
Collapse
|