Macula densa signalling—a potential role of cyclooxygenase‐2 (COX‐2)?
نویسندگان
چکیده
منابع مشابه
Macula densa cell signaling.
Macula densa cells are renal sensor elements that detect changes in distal tubular fluid composition and transmit signals to the glomerular vascular elements. This tubuloglomerular feedback mechanism plays an important role in regulating glomerular filtration rate and blood flow. Macula densa cells detect changes in luminal sodium chloride concentration through a complex series of ion transport...
متن کاملRole of the macula densa in renin release.
To examine the role of the macula densa in renin release, afferent arterioles alone or afferent arterioles with the macula densa attached were microdissected from rabbit kidney and incubated in Medium 199 for two consecutive 30-minute periods. Renin concentration in the medium was measured using partially purified rabbit angiotensinogen. Renin release rate over 1 hour from a single arteriole (o...
متن کاملRole of macula densa in diuretics-induced renin release.
Diuretic therapy may enhance renin release by various mechanisms, principally contraction of extracellular fluid volume and its effects, including a fall in arterial pressure. Awake hydropenic or volume-expanded rats received diuretics (amiloride and hydrochlorothiazide) that are known inhibitors of NaCl transport beyond the macula densa; also the well-known Na(+)-K(+)-2 Cl- transport system in...
متن کاملRole of macula densa cyclooxygenase-2 in renovascular hypertension.
Upregulation of the inducible cyclooxygenase (COX-2) in the macula densa accompanies the activation of the juxtaglomerular apparatus in many high-renin conditions. The functional role of COX-2 in these disease states is poorly understood. We tested whether COX-2 is required to increase renin in renovascular hypertension. Rats with established two-kidney, one-clip (2K1C) hypertension were treate...
متن کاملMacula densa-dependent and non-macula densa-dependent signaling in the juxtaglomerular apparatus
................................................................................................................. 75 ABSTRACT IN HUNGARIAN (ÖSSZEFOGLALÁS) ............................................ 76IN HUNGARIAN (ÖSSZEFOGLALÁS) ............................................ 76
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ژورنال
عنوان ژورنال: Nephrology Dialysis Transplantation
سال: 2000
ISSN: 1460-2385,0931-0509
DOI: 10.1093/ndt/15.10.1504