Ovarian Cancer Research Today is a free monthly online journal that collates and summarizes the latest research about Ovarian Cancer, including details on symptoms, causes, treatment, information. | ||||||
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Ovarian cancer risk in Polish BRCA1 mutation carriers is not associated with the prohibitin 3' untranslated region polymorphism.Jakubowska A, Gronwald J, Menkiszak J, Górski B, Huzarski T, Byrski T, Benner A, Lubiński J, Scott RJ, Hamann U Pomeranian Medical University, Department of Genetics and Pathology, ul. Polabska 4, 70-115 Szczecin, Poland. aniaj@sci.pam.szczecin.pl BACKGROUND: The variable penetrance of ovarian cancer in BRCA1 mutation carriers suggests that other genetic or environmental factors modify disease risk. The C to T transition in the 3' untranslated region of the prohibitin (PHB) gene alters mRNA function and has recently been shown to be associated with hereditary breast cancer risk in Polish women harbouring BRCA1 mutations. METHODS: To investigate whether the PHB 3'UTR polymorphism also modifies hereditary ovarian cancer risk, we performed a case-control study among Polish women carrying one of the three common founder mutations (5382insC, 300 T > G, 4154delA) including 127 ovarian cases and 127 unaffected controls who had both breasts and ovaries intact. Controls were matched to cases by year of birth and BRCA1 mutation. Genotyping analysis was performed using PCR-based restriction fragment length polymorphism analysis. Odds ratios (OR) were calculated using conditional and penalized univariable and multivariable logistic regression. RESULTS: A comparison of the genotype frequencies between cases and controls revealed no association of the PHB 3'UTR _CT+TT genotypes with ovarian cancer risk (ORadj 1.34; 95% CI, 0.59-3.11). CONCLUSION: Our data suggest that the PHB 3'UTR polymorphism does not modify ovarian cancer risk in women carrying one of the three Polish BRCA1 founder mutations. Published 2 May 2008 in BMC Cancer, 8: 90. Articles on Ovarian Cancer published 1 May 2008: Coordinated prophylactic surgical management for women with hereditary breast-ovarian cancer syndrome. BMC Cancer, 8: 101. BACKGROUND: Women with BRCA1 or BRCA2 mutations have a substantially increased risk of breast and ovarian cancer compared with the general population. Therefore, prophylactic mastectomy (PM) and bilateral salpingo-oophorectomy (BSO) have been proposed as risk-reduction strategies for BRCA1/2 mutation carriers. We aimed to assess the feasibility of coordinated PM and BSO in hereditary breast-ovarian cancer syndrome. METHODS: High risk women for breast and ovarian cancer who underwent coordinated ... [Abstract] [Full-text] Articles on Ovarian Cancer published 28 April 2008: Hormonal risk factors for ovarian cancer in premenopausal and postmenopausal women. Am J Epidemiol, 167(9): 1059-69. Ovarian cancer is most frequently diagnosed in postmenopausal women; however, the strongest risk predictors, pregnancy and oral contraceptive use, occur in most women in their twenties and thirties. Relatively few studies have examined how reproductive risk factors vary between pre- and postmenopausal ovarian cancer. The authors used data from a population-based, case-control study of ovarian cancer (896 cases, 967 controls) conducted in North Carolina from 1999 to 2006. Odds ratios and 95% ... [Abstract] [Full-text] Articles on Ovarian Cancer published 15 April 2008: Unusual presentation of acute ovarian torsion in an adolescent. Am J Emerg Med, 26(4): 520.e1-3. Ovarian torsion occurs when an ovary twists about its vascular pedicle. The process causes abdominal pain and will result in ovarian tissue loss if not diagnosed and managed expeditiously. Acute ovarian torsion is an uncommon cause of abdominal pain in adolescents, and, as a result, it is often mistaken for other processes. We present a case of ovarian torsion in an adolescent female who presented with abdominal pain and marked abdominal distension, which was initially suggestive of a gravid ... [Abstract] [Full-text] Articles on Ovarian Cancer published 4 April 2008: A qualitative study examining psychosocial distress, coping, and social support across the stages and phases of epithelial ovarian cancer. Health Care Women Int, 29(4): 366-83. Ovarian cancer patients experience high levels of anxiety and depression, yet there is little research regarding coping and support of this population. In this study we examined the experiences of women during diagnosis and treatment via 30 semistructured interviews. The interviews were analyzed qualitatively, and five main themes were evident: (1) extreme blunting; (2) having a "forgotten cancer"; (3) traumatic surprise of diagnosis; (4) highs and lows of health care; and (5) support ... [Abstract] [Full-text] Articles on Ovarian Cancer published 3 April 2008: Insulin-like growth factor binding protein-3 (IGFBP-3) acts as an invasion-metastasis suppressor in ovarian endometrioid carcinoma. Oncogene, 27(15): 2137-47. Metastasis and invasion occur in the majority of epithelial ovarian carcinoma at diagnosis. To delineate the molecular signature in ovarian cancer invasion, we established and characterized a human ovarian endometrioid carcinoma (EC) cell line OVTW59-P0 and its invasion-related sublines (P1-P4, in the order of increasing invasive activity). P4 showed faster migration and larger xenograft formation with metastasis than P0. By microarray analysis of different gene expression among P0-P4 sublines, ... [Abstract] [Full-text] Articles on Ovarian Cancer published 2 April 2008: Genetic variation in the one-carbon transfer pathway and ovarian cancer risk. Cancer Res, 68(7): 2498-506. Dysfunction in enzymes involved in one-carbon (1-C) metabolism can lead to increased chromosomal strand breaking and abnormal methylation patterns, which are both associated with cancer risk. Availability of 1-C units may modify risk. We investigated the association of single-nucleotide polymorphisms (SNP) in 21 genes in the 1-C transfer pathway among 829 Caucasian cases with primary epithelial ovarian cancer and 941 frequency-matched unaffected controls enrolled at Mayo Clinic (Rochester, MN) ... [Abstract] [Full-text] Loss of E-cadherin promotes ovarian cancer metastasis via alpha 5-integrin, which is a therapeutic target. Cancer Res, 68(7): 2329-39. E-cadherin loss is frequently associated with ovarian cancer metastasis. Given that adhesion to the abdominal peritoneum is the first step in ovarian cancer dissemination, we reasoned that down-regulation of E-cadherin would affect expression of cell matrix adhesion receptors. We show here that inhibition of E-cadherin in ovarian cancer cells causes up-regulation of alpha(5)-integrin protein expression and transcription. When E-cadherin was blocked, RMUG-S ovarian cancer cells were able to ... [Abstract] [Full-text] c-Jun NH2-terminal kinase activating kinase 1/mitogen-activated protein kinase kinase 4-mediated inhibition of SKOV3ip.1 ovarian cancer metastasis involves growth arrest and p21 up-regulation. Cancer Res, 68(7): 2166-75. In many patients without clinical metastases, cancer cells have already escaped from the primary tumor and entered a distant organ. A long-standing question in metastasis research is why some disseminated cancer cells fail to complete steps of metastatic colonization for extended periods of time. Our laboratory identified c-Jun NH(2)-terminal kinase activating kinase 1/mitogen-activated protein kinase kinase 4 (JNKK1/MKK4) as a metastasis suppressor protein in a mouse xenograft model of ... 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