نتایج جستجو برای: atretic follicle
تعداد نتایج: 21180 فیلتر نتایج به سال:
Introduction: Premature ovarian insufficiency (POI) is a challenging issue in terms of reproduction biology. In this study, therapeutic properties bone marrow CD146+ mesenchymal stem cells (MSCs) and CD144+ endothelial (ECs) were separately investigated rats with POI. Methods: POI classified into control POI, + MSCs, ECs groups. Enriched MSCs directly injected tissue (15 × 104 cells/10 μL) rele...
اثر مقادیر مختلف عصاره ی هیدروالکلی یونجه بر کنترل استرس اکسیداتیو نیکوتین در تخمدان موش صحرایی ماده
Background and Aim: Due to the importance of infertility caused by oxidative stress induced by nicotine, this study was to evaluate the effect of alfalfa extract in contrast with the nicotine on ovarian tissues in rats. Materials and Methods: Twenty-four adult female rats were randomly divided into 4 groups. Control group received no treatment; nicotine (0.2 mg/kg) was injected to T1 subcutane...
To examine the detailed composition of glycosaminoglycans during bovine ovarian follicular development and atresia, the specialized stromal theca layers were separated from the stratified epithelial granulosa cells of healthy (n=6) and atretic (n=6) follicles in each of three size ranges: small (3-5mm), medium (6-9mm) and large (10mm or more) (n=29 animals). Fluorophore-assisted carbohydrate el...
A morphological classification of the immature cumulus-oocyte complex (COC), which grossly resembled the atresia grade of its follicle source, was used in bovine oocytes to determine 1) the developmental potential by either in vitro fertilization or parthenogenetic activation, 2) the calcium current activity by whole-cell voltage clamp technique, and 3) the intracytoplasmic calcium stores by mi...
While several studies have documented the presence of plasminogen activator (PA) activity in hen ovarian follicle granulosa and theca tissues, to date it has not been possible to conclusively distinguish between the urokinase (u) and the tissue-type (t) form of the enzyme; this inability is due, in part, to lack of the cloned or characterized chicken tPA gene or gene product. Thus, the present ...
BACKGROUND Cryopreservation of ovarian tissue has been widely accepted as an option for fertility preservation among cancer patients. Some patients are exposed to chemotherapy prior to ovarian tissue cryopreservation. Consequently, assessment of the developmental capacity of human ovarian tissue after chemotherapy is of primary importance. MATERIALS In order to study the impact of previous ch...
The distribution of healthy and atretic follicles on the ovarian surface of improved Valachian ewes 17, 24, and 32 days postpartum is reported in this study. The number of healthy follicles was higher on day 24 postpartum and their mean diameter tended to increase to day 32 (P < 0.05) with the greatest diameter of 5 mm. 78-81% of atretic follicles ≥3 mm in diameter was observed where apoptosis ...
A posterior paryetal midline subscalp swelling noticed in a 19 month boy, by his family.These nodule had been enlarging slowly since birth. Radiologic imaging revealed that, subscalp lesion is a cyst and there was a communication between cyst and subarachnoid space via a calvarial defect. The other finding was “Vertically positioned straight sinus”. With this imaging findings our diagnosis was ...
OBJECTIVE Methoxsalen is a natural photoactive compound which is found in many seed plants. A number of epidermal proliferative disorders can be treated by methoxsalen along with long wave ultraviolet A (UVA). MATERIALS AND METHODS In an experimental study, we aimed to demonstrate the effect of methoxsalen, UVA and their combination on oogenesis Balb/C mice. There were two experimental groups...
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