Collecting Kidney Tubules
Mostrando 1-12 de 64 artigos, teses e dissertações.
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1. Development of the urinary system in guinea pig females (Cavia porcellus)
RESUMO: Os porquinhos-da-índia são modelos animais amplamente utilizados em pesquisas relacionadas a biologia do desenvolvimento. O objetivo deste trabalho foi demonstrar o processo de formação e diferenciação dos órgãos urinários em fêmeas da espécie no período pré-natal. Foram utilizadas quatro fêmeas aos 25, 30, 45 e >65 DG (dias de gestaç�
Pesq. Vet. Bras.. Publicado em: 30/09/2019
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2. Renal Dose Dopamine Mediates the Level of Aquaporin-2 Water Channel (Aqp2) in Broiler Chickens
ABSTRACT Aquaporin 2 (AQP2) is a small protein located in the collecting tubules of kidneys; it plays an important role in the concentration and production of urine. The aim of this study was to determine the expression level of the AQP2 gene in the kidney of broiler chickens after the administration of renaldose dopamine. Broiler chickens (25 days-old) were
Rev. Bras. Cienc. Avic.. Publicado em: 2017-09
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3. Fluoxetine effect on kidney water absorption / Efeito da fluoxetina na reabsorção de água pelo rim
A patogenia da hiponatremia decorrente do uso da Fluoxetina em pacientes idosos não está bem definida. Este achado tem sido atribuído a uma secreção inapropriada do Hormônio Antidiurétido (HAD), embora ainda não tenha sido evidenciado um aumento dos níveis plasmático deste hormônio nestes pacientes. Desta forma, este trabalho visa investigar o efe
Publicado em: 2007
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4. Carcinoma renal dos ductos de Bellini
Two types primary epithelial tumours of the kidney have been distinguished, such as renal cell carcinoma (hypernephroma or Grawitz) deriving from proximal tubules and carcinoma arising in the urothelium of the kidney's collecting system. Mancilla-Jimenez e cols were the first to describe in 1976 an atypical papillary carcinoma of the kidney deriving from col
Revista do Colégio Brasileiro de Cirurgiões. Publicado em: 2002-06
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5. Abnormal sodium pump distribution during renal tubulogenesis in congenital murine polycystic kidney disease.
Congenital polycystic kidney disease is characterized by the formation of large fluid-filled cysts in kidney tubules. It has been postulated that increased epithelial cell proliferation and altered transtubular fluid transport are necessary for cyst formation. To address the latter problem, we have studied the plasma membrane distribution of the alpha 1 and
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6. Transport of ammonia in the rabbit cortical collecting tubule.
Nonionic diffusion and diffusion equilibrium of ammonia have been generally accepted as the mechanism of urinary ammonium excretion. However, these characteristics have not been examined directly in vitro. In the present studies, nonionic diffusion and diffusion equilibrium of ammonia were examined in rabbit cortical collecting tubules perfused in vitro. Col
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7. A molecular map of G protein alpha chains in microdissected rat nephron segments.
Membrane-associated guanine nucleotide binding proteins regulate many receptor-mediated signals. Heterogeneity of biochemical and functional properties in nephron segments could be due to differences in G protein expression. To ascertain whether such heterogeneity of G proteins is present in various nephron segments, this study examines the distribution and
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8. β1-Integrin is required for kidney collecting duct morphogenesis and maintenance of renal function
Deletion of integrin-β1 (Itgb1) in the kidney collecting system led to progressive renal dysfunction and polyuria. The defect in the concentrating ability of the kidney was concomitant with decreased medullary collecting duct expression of aquaporin-2 and arginine vasopressin receptor 2, while histological examination revealed hypoplastic renal medullary co
American Physiological Society.
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9. The effect of antidiuretic hormone on solute flows in mammalian collecting tubules
These experiments were intended to evaluate the antidiuretic hormone (ADH)-dependent reflection coefficients of urea, sucrose, and NaCl in cortical and outer medullary collecting tubules isolated from mammalian kidney. In one group of experiments, the ADH-dependent osmotic water flows, when the perfusing solutions contained hypotonic NaCl solutions, were ind
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10. Localization of a proton-pumping ATPase in rat kidney.
The distribution of vacuolar H+ATPase in rat kidney was examined by immunocytochemistry using affinity-purified antibodies against the 31-, 56-, and 70-kD subunits of the bovine kidney proton pump. Proximal convoluted tubules were labeled over apical plasma membrane invaginations, and in the initial part of the thin descending limb, apical and basolateral pl
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11. The microanatomy of the distal tubules, collecting tubules and collecting ducts of the starling kidney.
Light and electron microscopic techniques were employed to characterise the various cell types found in the distal tubules, collecting tubules and collecting ducts in the kidneys of wild starlings (Sturnus vulgaris). There was a gradual change in cell characteristics along the length of the distal tubule. A short transition zone was identified, between the d
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12. Cellular constraints to diffusion: The effect of antidiuretic hormone on water flows in isolated mammalian collecting tubules
These experiments were intended to evaluate the effects of antidiuretic hormone (ADH) on dissipative water transport in cortical collecting tubules isolated from rabbit kidney. In the absence of ADH, the osmotic (Pf, cm sec-1) and diffusional (PDW cm sec-1) water permeability coefficients were, respectively, 6±6 and 4.7±1.3 (SD). When ADH was added to the