نتایج جستجو برای: oocyte denudation

تعداد نتایج: 16369  

2012
Kerry Gallagher

We define uplift and denudation, then review the basic principles underlying the mechanisms for producing uplift, and the methodologies used to quantify the geological timescale denudation history of uplifted regions. Uplift is represents work done against gravity, and does not necessarily lead immediately to rapid denudation. The causes of uplift can be categorised according to the principal d...

2005
Friedhelm von Blanckenburg

The study of a sample of river sediment enables the determination of spatially averaged denudation rates that provide an exceptional perspective on erosion and weathering processes that have taken place within a landscape. These measurements are done with in-situ produced cosmogenic nuclides (e.g. Be, Al), mostly in quartz from alluvial sediment. Cosmogenic nuclides are produced when secondary ...

Journal: :Fertility and Sterility 2021

To evaluate the development potential of immature metaphase 1 oocytes when converted to mature M2 within 2 6 hours. A total 620 cycles from June 2019 Oct 2020 at IVF unit IKDRC hospital, ICSI was performed on 4,975 out which 398 were (M1) time denudation .Immature M1 evaluated every hours for maturation status and divided accordingly into three groups, in group (n=152) first 2hours, B (n= 98) 4...

Journal: :Blood 2000
F Vidal J Aragonés A Alfranca M O de Landázuri

Vascular endothelial growth factor (VEGF) is highly expressed in vascular remodeling processes and accelerates reendothelialization after mechanical denudation. Two VEGF tyrosine kinase receptors have been reported-fms-like-tyrosine kinase-1 (Flt-1) and kinase domain region (KDR). Little is known about the regulation of the expression of these receptors after vascular injury. Herein, we have an...

Journal: :Stroke 1991
K Nishigaya Y Yoshida M Sasuga H Nukui G Ooneda

Using electron microscopy, we investigated the small arteries and veins in ischemic lesions induced by occlusion of the ostium of the middle cerebral artery in 42 rats. We observed endothelial denudation in the small arteries of rats receiving occlusion for greater than 6 hours. When the occluding cylinder was removed to allow for reperfusion, however, 2 hours of occlusion was sufficient for en...

Journal: :The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science 1899

Journal: :Geological Magazine 1875

Journal: :Human Reproduction 2023

Abstract Study question Does hyaluronidase (HAse) have possible negative or positive effects on cumulus cells (CCs) during oocyte denudation before ICSI by altering midkine (MK) levels? Summary answer Hyaluronidase inhibits the proliferation of CCs via inhibition MK activity which may result in poor embryo quality and low success. What is known already abundantly expressed ovarian follicles. se...

Journal: :Stroke 2004
Jean Raymond François Guilbert Annick Metcalfe Guylaine Gévry Igor Salazkin Olivier Robledo

BACKGROUND AND PURPOSE Endovascular treatment can improve the outcome of patients treated for ruptured intracranial aneurysms as compared with surgical clipping, but angiographic recurrences are frequent. Endothelial denudation before coil embolization may prevent recanalization and improve results of endovascular treatment. METHODS We compared angiographic and pathological results 3 months a...

Journal: :Journal of Nippon Medical School = Nippon Ika Daigaku zasshi 2000
T Yoshida K Kiuchi J Nejima M Kudo G Asano T Takano

Although endothelin-1 (ET-1) is involved in balloon-induced neointima formation, the role of ET-1 in balloon-induced neointima formation in hypercholesterolemia is unclear. In addition, it remains to be determined whether ET-1 is produced by endothelial cells or vascular smooth muscle cells, or both. We investigated tissue immunoreactive ET-1 levels by immunoblot analysis, localization of ET-1 ...

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