Dimitrios Papoutsis1, Hope K Haefner, Christopher P Crum, Anthony W Opipari, Barbara D Reed. 1. 1Department of Obstetrics and Gynaecology, Shrewsbury and Telford Hospitals NHS Trust, Shrewsbury, UK.; 2Center for Vulvar Diseases, Department of Obstetrics and Gynecology, University of Michigan Health System, Ann Arbor, MI, USA; 3Department of Pathology, Harvard Medical School, Brigham and Women's Hospital, Boston, MA, USA; and 4Department of Family Medicine, University of Michigan Health System, Ann Arbor, MI, USA.
Abstract
OBJECTIVES: To identify whether mast cell densities in vulvar biopsies from the vestibule are associated with vulvodynia. METHODS: We enrolled 100 women aged 19 to 59 years with confirmed vulvodynia cases, 100 racially matched controls, and 100 black control women. All had vulvar biopsies performed at the 7 o'clock position of the vestibule, which were then immunostained to detect c-KIT protein. The numbers of c-KIT positive mast cells per ×400 magnification field were manually counted, and t tests and logistic regression were used to assess the association with case-control status. RESULTS: Of the biopsies, 235 were adequate samples for c-KIT testing for mast cells. The mast cell density was substantially lower in black control women (13.9 ± 10.9) in comparison to white control women (22.5 ± 13.2 p < 0.001): hence the analysis was confined to white cases and racially matched control women. Compared with racially matched controls, cases were younger, more likely to be married, and reported a higher household income. The average number of mast cells per ×400 magnification field overall was 19.1 ± 13.2 (range, 0-62). There was no difference in the mast cell count between racially matched cases (22.4 ± 13.9 per ×400 field) and controls (22.5 ± 13.2) in either the univariate or multivariable analyses. Within the group of cases, there was no difference in mast cell density based on the presence or absence of a variety of urogenital symptoms. CONCLUSIONS: No difference in mast cell density in biopsies of the vestibule was found between white cases and racially matched controls. Black control women have a lower mast cell density compared with white control women.
OBJECTIVES: To identify whether mast cell densities in vulvar biopsies from the vestibule are associated with vulvodynia. METHODS: We enrolled 100 women aged 19 to 59 years with confirmed vulvodynia cases, 100 racially matched controls, and 100 black control women. All had vulvar biopsies performed at the 7 o'clock position of the vestibule, which were then immunostained to detect c-KIT protein. The numbers of c-KIT positive mast cells per ×400 magnification field were manually counted, and t tests and logistic regression were used to assess the association with case-control status. RESULTS: Of the biopsies, 235 were adequate samples for c-KIT testing for mast cells. The mast cell density was substantially lower in black control women (13.9 ± 10.9) in comparison to white control women (22.5 ± 13.2 p < 0.001): hence the analysis was confined to white cases and racially matched control women. Compared with racially matched controls, cases were younger, more likely to be married, and reported a higher household income. The average number of mast cells per ×400 magnification field overall was 19.1 ± 13.2 (range, 0-62). There was no difference in the mast cell count between racially matched cases (22.4 ± 13.9 per ×400 field) and controls (22.5 ± 13.2) in either the univariate or multivariable analyses. Within the group of cases, there was no difference in mast cell density based on the presence or absence of a variety of urogenital symptoms. CONCLUSIONS: No difference in mast cell density in biopsies of the vestibule was found between white cases and racially matched controls. Black control women have a lower mast cell density compared with white control women.
Authors: Martha F Goetsch; Terry K Morgan; Veselina B Korcheva; Hong Li; Dawn Peters; Catherine M Leclair Journal: Am J Obstet Gynecol Date: 2010-04-28 Impact factor: 8.661