Cortes, E and te Fong, LFW and Hameed, M and Harridge, S and Maclean, A and Yang, SY and Reid, WM and Goldspink, G (2005) Insulin-like growth factor-1 gene splice variants as markers of muscle damage in levator ani muscle after the first vaginal delivery. AM J OBSTET GYNECOL , 193 (1) 64 - 70. 10.1016/j.ajog.2004.12.088.
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Objective: Studies in animals and human muscle have demonstrated differential splicing of the insulin-like growth factor-1 gene in response to mechanical strain and damage. We conducted a study on the expression of insulin-like growth factor-1 splice variants in the levator am muscle after the first vaginal delivery.Study design: Ten women were recruited after the first vaginal delivery. Biopsy specimens were taken vaginally of the pubovisceral component of the levator am muscle. Five nonpregnant women were recruited as control subjects. Samples were processed with real-time quantitative polymerase chain reaction, with specific primers for the insulin-like growth factor-1 splice variants.Results: Insulin-like growth factor splice variants mechano growth factor and insulin-like growth factor-1Ea were significantly up-regulated (100- and 1000-fold) in the delivery population, compared with control subjects (P = .012 and .04, respectively). Statistical analysis indicated a correlation between the expression of the insulin-like growth factor-1 splice variants and the length of the second stage.Conclusion: These results show that damaged levator am muscle results from stretch and overload after the first vaginal delivery. (c) 2005 Elsevier Inc. All rights reserved.
|Title:||Insulin-like growth factor-1 gene splice variants as markers of muscle damage in levator ani muscle after the first vaginal delivery|
|Keywords:||muscle damage, levator ani muscle, SKELETAL-MUSCLE, PELVIC FLOOR, IGF-I, EXPRESSION, CHILDBIRTH, PROLAPSE, INJURY, DIFFERENTIATION, ACTIVATION, AUTOCRINE|
|UCL classification:||UCL > School of Life and Medical Sciences > Faculty of Life Sciences|
UCL > School of Life and Medical Sciences > Faculty of Medical Sciences > Surgery and Interventional Science (Division of)
UCL > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute for Women's Health > Women's Cancer
UCL > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute of Child Health > Department of Genes, Development and Disease > ICH - Clinical and Molecular Genetics
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