RESISTANT OVARY SYNDROMES
\ɹɪsˈɪstənt ˈə͡ʊvəɹi sˈɪndɹə͡ʊmz], \ɹɪsˈɪstənt ˈəʊvəɹi sˈɪndɹəʊmz], \ɹ_ɪ_s_ˈɪ_s_t_ə_n_t ˈəʊ_v_ə_ɹ_i s_ˈɪ_n_d_ɹ_əʊ_m_z]\
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Premature failure of ovulation associated with hypergonadotropinism and hypoestrogenism in women under the age of 40. The etiology appears to be multifactorial and many cases are idiopathic. When follicles are present but the ovaries are unable to respond to gonadotropins, resistant ovary syndrome results and this may be associated with autoimmune disease. Even when there is a loss of ovarian follicles, it is not always complete. Permanent and irreversible loss of follicles is termed premature menopause (MENOPAUSE, PREMATURE).
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Proto Oncogene Proteins c erbB 2
- cell surface protein-tyrosine kinase that is found to be overexpressed in significant number adenocarcinomas. It has extensive homology can heterodimerize EGF EPIDERMAL GROWTH FACTOR), 3 receptor (RECEPTOR, 3) and the 4 receptor. Activation of erbB-2 receptor occurs during heterodimer formation with a ligand-bound erbB family members. EC 2.7.11.-.