PMID: 7300113Jul 1, 1981Paper

Peristaltic flow of urine in the renal capillary collecting ducts of hamsters

Kidney International
L N Reinking, B Schmidt-Nielsen

Abstract

Urine movements in the papillary collecting ducts were studied visually, in vivo, through the intact renal pelvic wall in anesthetized (Inactin 150 mg/kg) hamsters having a normal range of urine flow rates (0.5 to 3.8 microliters.min(-1).100 g of body wt-1). Urine was given a contrasting color by a continuous i.v. infusion of lissamine green (0.5 to 2%) in saline. The lower renal pelvis with about 1.3 mm of the renal papilla was illuminated with a fiber optic light, and the movements of urine in the medullary collecting ducts were observed and filmed through a dissecting microscope. Urine flow was determined indirectly by measuring changes in the urinary bladder diameter, and the rate of urine formation was manipulated by changing the rate of lissamine green-saline infusion. Urine, propelled by pelvic peristaltic waves, moved as discreet boluses in a pulsatile fashion through the papillary collecting ducts. The length of the urine boluses and the percent of time the papillary collecting ducts were in contact with urine increased in direct proportion to urine flow. At the lowest urine flow rate, the papillary collecting ducts (at 1.0 mm from the tip) were empty 94% of the time. The velocity (1.6 +/- 0.1 mm.sec-1) and frequency (...Continue Reading

References

Mar 1, 1979·The American Journal of Anatomy·E R Lacy, B Schmidt-Nielsen
May 1, 1979·Acta Physiologica Scandinavica·P K Jensen

❮ Previous
Next ❯

Citations

Jun 15, 1984·Experientia·L N Reinking, M C Veale
Oct 20, 2005·American Journal of Physiology. Renal Physiology·Mary Ella C PruittBodil Schmidt-Nielsen
Dec 14, 2011·American Journal of Physiology. Renal Physiology·Anita T LaytonThomas L Pannabecker
Jan 1, 1982·The Journal of Clinical Investigation·R E OliverR L Jamison
Nov 1, 1984·The Journal of Clinical Investigation·J BargmanR L Jamison
Jan 1, 1985·CRC Critical Reviews in Toxicology·P H Bach, J W Bridges
Jan 1, 1985·Critical Reviews in Toxicology·P H Bach, J W Bridges
Feb 1, 1987·Kidney International·B Schmidt-Nielsen
Dec 1, 1982·Kidney International·B Schmidt-Nielsen, B Graves
Aug 15, 2014·Urolithiasis·Saeed R Khan, Benjamin K Canales
Sep 14, 2010·Wiley Interdisciplinary Reviews. Systems Biology and Medicine·S Randall Thomas
Dec 1, 1987·The American Journal of Anatomy·N S Maluf
Feb 17, 2006·Advances in Physiology Education·William H Dantzler
Apr 8, 2004·American Journal of Physiology. Renal Physiology·Pablo A OrtizJeffrey L Garvin
Aug 9, 2018·American Journal of Physiology. Renal Physiology·Gabrielle G GilmerMark Knepper
Mar 5, 2020·Nature Reviews. Nephrology·Eric H J VerschurenJoost G J Hoenderop
Jan 31, 2003·American Journal of Physiology. Renal Physiology·Mark A KnepperTerry Dwyer
Jul 18, 2019·American Journal of Physiology. Renal Physiology·Anita T Layton
Jun 24, 2004·American Journal of Physiology. Renal Physiology·Anita T LaytonHarold E Layton
Jun 24, 2017·American Journal of Physiology. Renal Physiology·Subhra Nag, Andrew Resnick
Feb 3, 2021·Micromachines·Leslie DonoghuePalaniappan Sethu

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.