Changes in bradykinin and bradykinin B2-receptor during estrous cycle of mouse
| Autor: | Rajagopala Sridaran, Padmasana Singh, Amitabh Krishna |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
endocrine system
medicine.medical_specialty Histology Receptor Bradykinin B2 media_common.quotation_subject Immunoblotting Bradykinin Estrous Cycle Ovary Biology Article Mice chemistry.chemical_compound Corpus Luteum Internal medicine Follicular phase medicine Animals Receptor Ovulation reproductive and urinary physiology media_common Estrous cycle Granulosa Cells urogenital system Cell Biology General Medicine Antral follicle Immunohistochemistry medicine.anatomical_structure Endocrinology chemistry Female Corpus luteum hormones hormone substitutes and hormone antagonists |
| Zdroj: | Acta Histochemica. 113:436-441 |
| ISSN: | 0065-1281 |
| Popis: | The aim of the study was to investigate changes in the abundance of bradykinin and bradykinin B2-receptor in the ovary of mice during its estrous cycle. Changes in the abundance of bradykinin were correlated with changes in bradykinin B(2)-receptor in order to determine the functional significance of this peptide for follicular development, ovulation and luteinization. Bradykinin immunoreactivity was mainly observed in the granulosa cells of antral follicles, especially around the oocytes and lining the antral cavity during proestrus and estrus phases of the cycle. Recently formed corpora lutea showed mild immunoreactivity for both bradykinin and bradykinin B(2)-receptor. During diestrus 1 and diestrus 2, bradykinin and bradykinin B(2)-receptor immunostaining was mainly found in the corpora lutea and mildly in the antral follicles. Immunoblot analysis for bradykinin and bradykinin B(2)-receptor attained a peak during late evening in proestrus, which may be the time of the LH surge. Thereafter bradykinin and bradykinin B(2)-receptor declined sharply during the estrus phase. When the concentration of bradykinin was correlated with bradykinin B(2)-receptor throughout the estrous cycle, they showed strong positive correlation. Thus, this study indicates that the levels of bradykinin and bradykinin B(2)-receptor both simultaneously regulate estrous cycle and are important components for the reproductive process. |
| Databáze: | OpenAIRE |
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