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Thakur S, Singh A, Kaur M, Reza N, Kumar N, Kour R, Kaur S, Singh Bedi PM, Jain SK. Vitamins and minerals fortified emulsion of omega-3 fatty acids for the management of preterm birth: In-vitro, in-silico, and in-vivo studies. J Drug Deliv Sci Technol 2023. [DOI: 10.1016/j.jddst.2023.104409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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Hu Y, Fan LJ, Jiang YM, Liu H, Yong H, Peng C. Intrathecal Injection of Ropivacaine Reduces Cervical Resistance in Late-Pregnant Rats. Drug Des Devel Ther 2022; 16:1183-1189. [PMID: 35502424 PMCID: PMC9056095 DOI: 10.2147/dddt.s352411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 04/19/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose Materials and Methods Results Conclusion
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Affiliation(s)
- Yu Hu
- Department of Anesthesiology, Xuzhou Maternity and Child Health Care Hospital, Xuzhou, Jiangsu, People’s Republic of China
| | - Li-Jun Fan
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu, People’s Republic of China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Department of Anesthesiology, Xuzhou, Jiangsu, People’s Republic of China
| | - Yue-Ming Jiang
- Department of Anesthesiology, Xuzhou Maternity and Child Health Care Hospital, Xuzhou, Jiangsu, People’s Republic of China
| | - Hong Liu
- Heping Women and Children’s Hospital, Xuzhou, Jiangsu, People’s Republic of China
| | - Hui Yong
- Department of Cardiology, The Affiliated Huaian No.1 People’s Hospital of Nanjing Medical University, Huaian, Jiangsu, People’s Republic of China
| | - Chong Peng
- Department of Anesthesiology, Xuzhou Maternity and Child Health Care Hospital, Xuzhou, Jiangsu, People’s Republic of China
- Correspondence: Chong Peng, Department of Anesthesiology, Xuzhou Maternity and Child Health Care Hospital, No. 46 Heping Road Xuzhou, Xuzhou, Jiangsu, People’s Republic of China, 221010, Email
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Zhang D, Rajaratnam V, Al-Hendy O, Halder S, Al-Hendy A. Green Tea Extract Inhibition of Human Leiomyoma Cell Proliferation Is Mediated via Catechol- O-Methyltransferase. Gynecol Obstet Invest 2014; 78:109-18. [DOI: 10.1159/000363410] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 05/03/2014] [Indexed: 11/19/2022]
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Terkawi AS, Jackson WM, Thiet MP, Hansoti S, Tabassum R, Flood P. Oxytocin and catechol-O-methyltransferase receptor genotype predict the length of the first stage of labor. Am J Obstet Gynecol 2012; 207:184.e1-8. [PMID: 22939719 DOI: 10.1016/j.ajog.2012.06.079] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 05/13/2012] [Accepted: 06/28/2012] [Indexed: 11/16/2022]
Abstract
OBJECTIVE We aimed to identify genetic factors that influence the rate of the first stage of labor. STUDY DESIGN We prospectively enrolled 233 laboring nulliparous parturients. Demographic, clinical, and genetic data were collected. We evaluated the influence of population and individual variability using a nonlinear mixed effects model. RESULTS Parturients who were homozygous for "G" at oxytocin receptor gene rs53576 transitioned to active labor later and thus had slower labor. Catechol-O-methyltransferase rs4633 genotype TT was associated with slower latent phase labor. Labor induction with prostaglandin was associated with faster labor, and request for meperidine was associated with slower labor. Birthweight was related inversely to the rate of the active phase. CONCLUSION There are demographic, clinical, and genetic factors that influence an individual's rate of labor progress. This information could be used in automated form to improve the prediction of the length of the first stage of labor.
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Affiliation(s)
- Abdullah S Terkawi
- Department of Anesthesiology, King Farad Medical City, Riyadh, Saudi Arabia
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Thota C, Menon R, Wentz MJ, Fortunato SJ, Bartlett J, Drobek CO, Nair S, Al-Hendy A. A single-nucleotide polymorphism in the fetal catechol-O-methyltransferase gene is associated with spontaneous preterm birth in African Americans. Reprod Sci 2011; 19:135-42. [PMID: 22158829 DOI: 10.1177/1933719111417885] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Catechol-O-methyltransferase (COMT) activity has been reported to be higher in African Americans (AA) than Caucasians (Cau). COMT converts 2- and 4-hydroxy (OH) estrogens to 2- and 4-methoxyestrogens, respectively, and can increase estrogenic milieu locally in tissues. To assess whether the increased incidence of preterm birth (PTB) among AA women is associated with single-nucleotide polymorphism (SNP) in the COMT gene, we examined variations in maternal and fetal COMT genes and their association with pregnancy outcomes (term vs preterm pregnancies) using 4 functional SNPs: rs4633, rs4680, rs4818, and rs6269 in both AA and Cau. We analyzed samples from 267 AA women (191 term and 76 preterm pregnancies) and 339 Cau (194 term and 145 preterm pregnancies) in this study. The results showed a significant difference (P < .05) in allele and genotype frequencies between term and preterm AA and Cau women in 3 SNPs in both maternal and fetal DNA. The analysis revealed that in AA fetal COMT genes, SNP rs4818 is associated with PTB at the allele (C; P < .001), genotype (C/C; P < .01), and 2- (P < .03) and 3 (P < .04)-window haplotype levels. Multidimensionality reduction analysis also showed a significant (P < .01) association between rs4818 and PTB. In conclusion, our study demonstrated that a synonymous polymorphism, rs4818 in the fetal COMT gene, is associated with PTB in AA.
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Affiliation(s)
- Chandrasekhar Thota
- Department of Obstetrics and Gynecology, Center for Women's Health Research, Meharry Medical College, Nashville, TN 37208, USA
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Hassan MH, Fouad H, Bahashwan S, Al-Hendy A. Towards non-surgical therapy for uterine fibroids: catechol-O-methyl transferase inhibitor shrinks uterine fibroid lesions in the Eker rat model. Hum Reprod 2011; 26:3008-18. [PMID: 21896544 DOI: 10.1093/humrep/der280] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Uterine leiomyomas (fibroids) are the most common pelvic tumors in women. We assessed the potential therapeutic utility of Ro 41-0960, a synthetic catechol-O-methyl transferase inhibitor (COMTI), in the Eker rat. METHODS We randomized uterine fibroid-bearing Eker rats for treatment with Ro 41-0960 (150 mg/kg/12 h) versus vehicle for 2 and 4 weeks. The fibroids were measured by caliper and subjected to histological evaluation. Urinary levels of 2-hydroxy estrogen (E(2)), 16-hydroxy E2 and DPD (osteoporosis marker) and serum liver enzymes were evaluated. Expressions of Cyclin D1, proliferating cell nuclear antigen (PCNA), Poly [ADP-ribose] polymerase1 (PARP1), tumor suppressor gene (P53) and transforming growth factor (TGFβ3) were assessed in fibroids using immunohistochemical analysis or RT-PCR. Apoptosis was confirmed using terminal deoxynucleotidyltransferase-mediated dUTP nick-end labeling (TUNEL). RESULTS Ro 41-0960-treated rats exhibited fibroid volumes of 86 ± 7% and 105 ± 12% of initial burden, at 2 and 4 weeks post-treatment, respectively, significantly lower than control group (240 ± 15% and 300 ± 18%; P< 0.01). Ro 41-0960 increased the urinary 2-hydroxy E2/16-hydroxy E(2) ratio, level of p53 mRNA and TUNEL positivity (P< 0.05) and decreased PARP1, PCNA and cyclin D1 proteins and TGFβ3 mRNA (P< 0.05). Ro 41-0960 did not change normal tissue histology, liver functions or urinary DPD level. CONCLUSIONS Ro 41-0960 (COMTI) arrested growth/shrunk uterine fibroids in Eker rats. This result may be related to modulation of estrogen-dependent genes involved in apoptosis, proliferation and extracellular matrix deposition via accumulation of 2-hydroxy estrogen. The efficacy and safety of Ro 41-0960 in rats suggest its candidacy for treatment of uterine fibroids.
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Affiliation(s)
- M H Hassan
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
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Zhao A, Cheng Y, Li X, Li Q, Wang L, Xu J, Xiang Y, Xing Q, He L, Zhao X. Promoter hypomethylation of COMT in human placenta is not associated with the development of pre-eclampsia. Mol Hum Reprod 2010; 17:199-206. [PMID: 21047975 DOI: 10.1093/molehr/gaq092] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Disruption of the Catechol-O-methyltransferase (COMT) gene has been shown to be involved in pre-eclampsia (PE). To investigate whether two promoters of the COMT gene are differentially regulated by methylation in PE patients, we have analyzed the genomic DNA extracted from placenta (cases n = 16; controls n = 21), maternal peripheral blood (cases n = 4; controls n = 6) and umbilical cord blood (cases n = 8; controls n = 8) of women with PE and women with normal pregnancy. Bisulfite sequencing identified the predominantly unmethylated MB-COMT promoter in placenta, maternal peripheral blood and umbilical cord blood samples (PE and control). Subsequent quantitative MassArray data confirmed a significant tissue-specific hypomethylation of the S-COMT promoter in placenta (mean = 28.6%) when compared with its densely methylated patterns in blood samples (mean = 74.5%, P < 0.001), consistent with the sequencing data. However, no PE-specific methylation difference was found between cases and controls either in placenta or in blood samples. Moreover, none of the clinical characteristics had an effect on the methylation status of the S-COMT promoter. This study does not support a causal link between methylation regulation of COMT promoters and PE. However, the observed placenta-specific S-COMT promoter may be a potential marker for early prediction of PE in maternal plasma, although this remains to be further evaluated.
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Affiliation(s)
- Arman Zhao
- Institute of Biomedical Sciences, Fudan University, 138 Yixueyuan Road, Shanghai 200032, China
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Harirah H, Thota C, Wentz MJ, Zaman W, Al-Hendy A. Elevated expression of catechol-O-methyltransferase is associated with labor and increased prostaglandin E(2) production by human fetal membranes. Am J Obstet Gynecol 2009; 201:496.e1-7. [PMID: 19664748 DOI: 10.1016/j.ajog.2009.05.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2008] [Revised: 03/11/2009] [Accepted: 05/20/2009] [Indexed: 10/20/2022]
Abstract
OBJECTIVE The purpose of this study was to evaluate the expression and function of catechol-O-methyltransferase in human fetal membranes at term. STUDY DESIGN Fetal membranes obtained from women between 38-42 weeks of gestation, after (1) vaginal delivery with spontaneous labor and (2) prelabor elective cesarean section (no labor), were assayed for catechol-O-methyltransferase expression using quantitative real-time polymerase chain reaction analysis, immunohistochemistry, and Western blot analysis. Prostaglandin E(2) secretion from amnion and choriodecidua explants treated with or without catechol-O-methyltransferase inhibitor was assayed by enzyme-linked immunosorbent analysis. RESULTS Amnion layer of fetal membranes from laboring women expressed significantly higher levels of catechol-O-methyltransferase, compared with those from women with no labor. Catechol-O-methyltransferase was higher in the amnion layer than in choriodecidua. Selective catechol-O-methyltransferase inhibition significantly decreased prostaglandin E(2) production from fetal membranes. CONCLUSION Labor increases catechol-O-methyltransferase expression in the amnion of human fetal membranes. Selective catechol-O-methyltransferase inhibition decreased prostaglandin E(2) secretion in fetal explant cultures, suggesting a role for catechol-O-methyltransferase in human labor and delivery.
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Mitchell BF, Taggart MJ. Are animal models relevant to key aspects of human parturition? Am J Physiol Regul Integr Comp Physiol 2009; 297:R525-45. [PMID: 19515978 DOI: 10.1152/ajpregu.00153.2009] [Citation(s) in RCA: 189] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Preterm birth remains the most serious complication of pregnancy and is associated with increased rates of infant death or permanent neurodevelopmental disability. Our understanding of the regulation of parturition remains inadequate. The scientific literature, largely derived from rodent animal models, suggests two major mechanisms regulating the timing of parturition: the withdrawal of the steroid hormone progesterone and a proinflammatory response by the immune system. However, available evidence strongly suggests that parturition in the human has significantly different regulators and mediators from those in most of the animal models. Our objectives are to critically review the data and concepts that have arisen from use of animal models for parturition and to rationalize the use of a new model. Many animal models have contributed to advances in our understanding of the regulation of parturition. However, we suggest that those animals dependent on progesterone withdrawal to initiate parturition clearly have a limitation to their translation to the human. In such models, a linear sequence of events (e.g., luteolysis, progesterone withdrawal, uterine activation, parturition) gives rise to the concept of a "trigger" mechanism. Conversely, we propose that human parturition may arise from the concomitant maturation of several systems in parallel. We have termed this novel concept "modular accumulation of physiological systems" (MAPS). We also emphasize the urgency to determine the precise role of the immune system in the process of parturition in situations other than intrauterine infection. Finally, we accentuate the need to develop a nonprimate animal model whose physiology is more relevant to human parturition. We suggest that the guinea pig displays several key physiological characteristics of gestation that more closely resemble human pregnancy than do currently favored animal models. We conclude that the application of novel concepts and new models are required to advance translational research in parturition.
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Affiliation(s)
- Bryan F Mitchell
- Department of Obstetrics & Gynecology, Heritage Medical Research Centre, University of Alberta, Edmonton, Alberta, Canada.
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