نتایج جستجو برای: hypertonicity
تعداد نتایج: 682 فیلتر نتایج به سال:
Purpose. To examine the effect of hypertonicity on the induction of the Na-myo-inositol (Na-MI) cotransporter(s) in cultured bovine lens epithelial cells (BLECs). Methods. Na-MI cotransporter 626-bp reverse transcription-polymerase chain reaction product amplified from lens cell RNA and aldose reductase (AR) cDNA probes were used to measure respective mRNA content by Northern blot analysis. Res...
UNLABELLED Previously we demonstrated that arginine vasopressin (AVP) directly inhibits bicarbonate absorption (JHCO3, pmol/min per mm) in the medullary thick ascending limb (MTAL) of the rat. To determine whether changes in osmolality also may affect bicarbonate absorption, MTAL were studied in vitro with 25 mM HCO3- solutions. Control osmolality was 290 mosmol/kg H2O. In the absence of AVP, i...
While there is increasing evidence that Ca2+ plays an important role in regulating cell proliferation, the precise mechanisms have not been clearly elucidated so far. In order to gain insight into how Ca2+ controls cell division, the rate of proliferation, cell volume, viability and attachment to the culture support were measured in NG108-15 neuroblastoma cells in the presence of various extrac...
Because of the relative impermeability of the blood-brain barrier (BBB), many drugs are unable to reach the CNS in therapeutically relevant concentration. One method to deliver drugs to the CNS is the osmotic opening of the BBB using mannitol. Hyperosmotic mannitol induces a strong phosphorylation on tyrosine residues in a broad spectrum of proteins in cerebral endothelial cells, the principal ...
absorption in thick ascending limb: modifying effects of vasopressin. Am. J. Physiol. 274 (Cell Physiol. 43): C931– C939, 1998.—Growth factors stimulate Na1/H1 exchange activity in many cell types but their effects on acid secretion via this mechanism in renal tubules are poorly understood. We examined the regulation of HCO3 2 absorption by nerve growth factor (NGF) in the rat medullary thick a...
BACKGROUND Internal anal sphincter hypertonicity with nonrelaxation can cause persistent constipation and obstructive symptoms in children after surgery for Hirschsprung's disease. Intractable symptoms traditionally have been treated with anal myectomy, which may be ineffective or complicated by long-term incontinence. The authors evaluated prospectively the use of intrasphincteric botulinum to...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید