| Menstrual phase-related differences in the pulsatility index on the central retinal artery suggest an oestrogen vasodilatation effect that antagonizes with progesterone. | |
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MedLine Citation:
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PMID: 20213131 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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PURPOSE: The actual effect of steroid hormones on cerebral microcirculation is still controversial. Therefore, the aim of our study was to investigate vascular flow variations in the central retinal artery that may exist during the ovulatory menstrual cycle. METHODS: A total of 34 healthy women were included in this observational, longitudinal, and prospective study. All participants were submitted to dopplerfluxometric evaluation of the eyes in order to study the pulsatility index (PI) of the central retinal arteries, during four phases of the menstrual cycle: early follicular, mid follicular, periovulatory, and mid luteal phases. RESULTS: Subjects' ages ranged from 14 to 47 years old (mean: 29.7 ± 10.1) and PI did not differ among age groups. The PI of the central retinal artery was different among the four phases of the menstrual cycle. PI showed a significant decrease from early follicular phase (1.72) to mid follicular phase (1.57) (p = 0.037), and was similar during periovulatory phase (1.56) and significantly increased in mid luteal phase (1.70). After that it returned to the values observed in the early follicular phase. CONCLUSION: Our results suggest the existence of an oestrogen vasodilatation effect on the central retinal artery that is menstrual phase-related and antagonized by progesterone. |
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Authors:
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Luiz Carlos Viana; Marcos Faria; Heverton Pettersen; Marcos Sampaio; Selmo Geber |
Publication Detail:
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Type: Journal Article Date: 2010-03-06 |
Journal Detail:
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Title: Archives of gynecology and obstetrics Volume: 283 ISSN: 1432-0711 ISO Abbreviation: Arch. Gynecol. Obstet. Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-02-09 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8710213 Medline TA: Arch Gynecol Obstet Country: Germany |
Other Details:
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Languages: eng Pagination: 569-73 Citation Subset: IM |
Affiliation:
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Faculdade de Medicina da Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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