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Renal physiology

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https://www.readbyqxmd.com/read/29781524/tgf-%C3%AE-signalling-in-renal-fibrosis-from-smads-to-non-coding-rnas
#1
Patrick Ming-Kuen Tang, Ying-Ying Zhang, Thomas Shiu-Kwong Mak, Philip Chiu-Tsun Tang, Xiao-Ru Huang, Hui-Yao Lan
Transforming growth factor-β (TGF-β) is the key player in tissue fibrosis. However, antifibrotic therapy targeting this multifunctional protein may interfere other physiological processes to cause side effects. Thus, precise therapeutic targets are needed to be identified by further understanding the underlying mechanisms of TGF-β1 signalling during fibrogenesis. Equilibrium of Smad signalling is crucial for TGF-β-mediated renal fibrosis, where Smad3 is pathogenic but Smad2 and Smad7 are protective. The activation of TGF-β1/Smad signalling triggers extracellular matrix deposition, and local myofibroblast generation and activation...
May 21, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29780418/biological-and-clinical-effects-of-calciprotein-particles-on-chronic-kidney-disease-mineral-and-bone-disorder
#2
REVIEW
Kenichi Akiyama, Takaaki Kimura, Kazuhiro Shiizaki
Calciprotein particles (CPPs) are a new biological marker of chronic kidney disease-mineral and bone disorder (CKD-MBD). CPPs consist of phosphate, calcium, and some proteins, with phosphate being the major contributor to the level and biological activity of CPPs. Recent studies have shown the physiological and pathological significance of CPPs, including contributions to bone and mineral metabolism, and to tissue and organ impairments such as cardiovascular damage and inflammatory responses. These actions are well known as important aspects of CKD-MBD...
2018: International Journal of Endocrinology
https://www.readbyqxmd.com/read/29779043/glis1-3-transcription-factors-critical-roles-in-the-regulation-of-multiple-physiological-processes-and-diseases
#3
REVIEW
Anton M Jetten
Krüppel-like zinc finger proteins form one of the largest families of transcription factors. They function as key regulators of embryonic development and a wide range of other physiological processes, and are implicated in a variety of pathologies. GLI-similar 1-3 (GLIS1-3) constitute a subfamily of Krüppel-like zinc finger proteins that act either as activators or repressors of gene transcription. GLIS3 plays a critical role in the regulation of multiple biological processes and is a key regulator of pancreatic β cell generation and maturation, insulin gene expression, thyroid hormone biosynthesis, spermatogenesis, and the maintenance of normal kidney functions...
May 19, 2018: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/29778015/dietary-ala-epa-and-dha-have-distinct-effects-on-oxylipin-profiles-in-female-and-male-rat-kidney-liver-and-serum
#4
Shan Leng, Tanja Winter, Harold M Aukema
There is much data on the effects of dietary n-3 fatty acids on tissue fatty acid compositions, but comparable comprehensive data on their oxygenated metabolites (oxylipins) is limited. The effects of providing female and male rats with diets high in α-linolenic acid (ALA), EPA or DHA for 6 weeks on oxylipins and fatty acids in kidney, liver and serum were therefore examined. The oxylipin profile generally reflected fatty acids, but it also revealed unique effects of individual n-3 fatty acids that were not apparent from fatty acid data alone...
April 18, 2018: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29777269/pediatric-appendicitis-severity-in-kwazulu-natal-south-africa-a-retrospective-cohort-analysis
#5
Matthew C Hernandez, Victor Y Kong, John L Bruce, Johnathon M Aho, Grant L Laing, Martin D Zielinski, Damian L Clarke
BACKGROUND: Acute appendicitis is a common pediatric surgical emergency; however, there are few grading systems to assign disease severity. The American Association for the Surgery of Trauma (AAST) recently developed a grading system for a variety of emergency surgical conditions, including appendicitis. The severity of acute appendicitis in younger patients in KwaZulu-Natal (South Africa) is unknown. We aimed to describe the disease severity in this patient population using the AAST grading system hypothesizing that the AAST grade would correlate with morbidity, management type, and duration of stay...
May 17, 2018: World Journal of Surgery
https://www.readbyqxmd.com/read/29777021/serum-6-bromotryptophan-levels-identified-as-a-risk-factor-for-ckd-progression
#6
Adrienne Tin, Girish Nadkarni, Anne M Evans, Cheryl A Winkler, Erwin Bottinger, Casey M Rebholz, Mark J Sarnak, Lesley A Inker, Andrew S Levey, Michael S Lipkowitz, Lawrence J Appel, Dan E Arking, Josef Coresh, Morgan E Grams
Background Metabolite levels reflect physiologic homeostasis and may serve as biomarkers of disease progression. Identifying metabolites associated with APOL1 risk alleles-genetic variants associated with CKD risk commonly present in persons of African descent-may reveal novel markers of CKD progression relevant to other populations. Methods We evaluated associations between the number of APOL1 risk alleles and 760 serum metabolites identified via untargeted profiling in participants of the African American Study of Kidney Disease and Hypertension (AASK) ( n =588; Bonferroni significance threshold P <6...
May 18, 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29776996/effects-of-chronic-exposure-to-12%C3%A2-saltwater-on-the-endocrine-physiology-of-juvenile-american-alligator-alligator-mississippiensis
#7
P C Faulkner, M L Burleson, L Simonitis, C Marshall, D Hala, L H Petersen
American alligator ( Alligator mississippiensis , Linnaeus) habitats are prone to saltwater intrusion following major storms, hurricanes or droughts. Anthropogenic impacts affecting hydrology of freshwater systems may exacerbate saltwater intrusion into freshwater habitats. The endocrine system of alligators is susceptible to changes in the environment but it is currently not known how the crocodilian physiological system responds to environmental stressors such as salinity. Juvenile alligators were exposed to 12‰ saltwater for 5 weeks to determine effects of chronic exposure to saline environments...
May 18, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29772474/mitochondria-rich-cells-adjustments-and-ionic-balance-in-the-neotropical-fish-prochilodus-lineatus-exposed-to-titanium-dioxide-nanoparticles
#8
Talita L L Carmo, Vinícius C Azevedo, Priscila R Siqueira, Tiago D Galvão, Fabrício A Santos, Cláudia B R Martinez, Carlos R Appoloni, Marisa N Fernandes
Manufactured titanium dioxide nanoparticles (TiO2 -NP) have been intensely applied in numerous industrial products and may be a risk for aquatic systems as they are not completely removed from domestic and industrial wastes after water treatment. This study evaluated the osmo- and ionic balance, Na+ /K+ -ATPase, H+ -ATPase and carbonic anhydrase activities and the mitochondria-rich cells (MRC) in the gills and kidney of the Neotropical fish Prochilodus lineatus after 2 (acute) and 14 (subchronic) days of exposure to nominal 0, 1, 5, 10 and 50 mg L-1 TiO2 -NP...
May 9, 2018: Aquatic Toxicology
https://www.readbyqxmd.com/read/29770561/investigating-the-interaction-of-anticancer-drug-temsirolimus-with-human-transferrin-molecular-docking-and-spectroscopic-approach
#9
Anas Shamsi, Azaj Ahmed, Mohd Shahnawaz Khan, Fohad Mabood Husain, Samreen Amani, Bilqees Bano
In our present study, binding between an important anti renal cancer drug temsirolimus and human transferrin (hTF) was investigated employing spectroscopic and molecular docking approach. In the presence of temsirolimus, hyper chromaticity is observed in hTF in UV spectroscopy suggestive of complex formation between hTF and temsirolimus. Fluorescence spectroscopy revealed the occurrence of quenching in hTF in the presence of temsirolimus implying complex formation taking place between hTF and temsirolimus. Further, the mode of interaction between hTF and temsirolimus was revealed to be static by fluorescence quenching analysis at 3 different temperatures...
May 16, 2018: Journal of Molecular Recognition: JMR
https://www.readbyqxmd.com/read/29770125/fgf23-actions-on-target-tissues-with-and-without-klotho
#10
REVIEW
Beatrice Richter, Christian Faul
Fibroblast growth factor (FGF) 23 is a phosphaturic hormone whose physiologic actions on target tissues are mediated by FGF receptors (FGFR) and klotho, which functions as a co-receptor that increases the binding affinity of FGF23 for FGFRs. By stimulating FGFR/klotho complexes in the kidney and parathyroid gland, FGF23 reduces renal phosphate uptake and secretion of parathyroid hormone, respectively, thereby acting as a key regulator of phosphate metabolism. Recently, it has been shown that FGF23 can also target cell types that lack klotho...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29767558/molecular-basis-of-the-counteraction-by-calcium-channel-blockers-of-cyclosporine-nephrotoxicity
#11
Safaa Hicham Hammoud, Sahar Alkhansa, Neamah Mahjoub, Amal Galal Omar, Mahmoud M El-Mas, Assaad A Eid
Nephrotoxicity is a serious side effect for the immunosuppressant drug cyclosporine (CSA). In this study, we tested the hypothesis that administration of calcium channel blockers such as verapamil or nifedipine ameliorate renal CSA-induced renal dysfunction. Furthermore, our study investigates the roles of inflammatory, oxidative, and fibrotic pathways in CSA-induced renal dysfunction. Six groups of male rats (n=6/group) were used and received one of the following treatments for 7 consecutive days: vehicle (cremophor EL, i...
May 16, 2018: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/29767557/polycystin-1-dysfunction-impairs-electrolyte-and-water-handling-in-a-renal-pre-cystic-mouse-model-for-adpkd
#12
Eric H J Verschuren, Sami G Mohammed, Wouter N Leonhard, Caro Overmars-Bos, Kimberly A M Veraar, Joost G J Hoenderop, René J M Bindels, Dorien J M Peters, Francisco J Arjona
The PKD1 gene encodes polycystin-1 (PC1), a mechanosensor triggering intracellular responses upon urinary flow sensing in kidney tubular cells. Mutations in PKD1 lead to autosomal dominant polycystic kidney disease (ADPKD). The involvement of PC1 in renal electrolyte handling remains unknown since renal electrolyte physiology in ADPKD patients has only been characterized in cystic ADPKD. We thus studied the renal electrolyte handling in inducible kidney-specific Pkd1 knockout (iKsp-Pkd1-/-) mice manifesting a pre-cystic phenotype...
May 16, 2018: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/29764302/anandamide-and-endocannabinoid-system-an-attractive-therapeutic-approach-for-cardiovascular-disease
#13
Virna Margarita Martín Giménez, Sandra Edith Noriega, Diego Enrique Kassuha, Lucía Beatriz Fuentes, Walter Manucha
Cardiovascular disease is currently not adequately managed and has become one of the main causes of morbidity and mortality worldwide. Current therapies are inadequate in terms of preventing its progression. There are several limitations, such as poor oral bioavailability, side effects, low adherence to treatment, and high dosage frequency of formulations due to the short half-life of the active ingredients used, among others. This review aims to highlight the most relevant aspects of the relationship between the cardiovascular system and the endocannabinoid system, with special attention to the possible translational effect of the use of anandamide in cardiovascular health...
May 1, 2018: Therapeutic Advances in Cardiovascular Disease
https://www.readbyqxmd.com/read/29761105/prevalence-of-proteinuria-and-albuminuria-in-an-obese-population-and-associated-risk-factors
#14
Jordan L Rosenstock, Max Pommier, Guillaume Stoffels, Satyam Patel, Michael F Michelis
Obesity has been increasingly recognized as a risk factor for kidney disease and both proteinuria and microalbuminuria have been associated with obesity. The actual prevalence of microalbuminuria and proteinuria in obese patients in the United States (US) has not been clearly described in the literature. Furthermore, obesity is associated with risk factors of kidney disease, such as diabetes and hypertension (HTN), and the prevalence of proteinuria and albuminuria excluding these risk factors is uncertain. In this study, we collected urine albumin/creatinine and urine protein/creatinine ratios on obese patients undergoing bariatric surgery to determine the prevalence of albuminuria and proteinuria in obese patients with and without associated diabetes and HTN...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29758935/blood-urea-nitrogen-bun-independently-predicts-mortality-in-critically-ill-patients-admitted-to-icu-a-multicenter-study
#15
Bernhard Wernly, Michael Lichtenauer, Namkje A R Vellinga, E Christiaan Boerma, Can Ince, Malte Kelm, Christian Jung
BACKGROUND AND PURPOSE: The Microcirculatory Shock Occurrence in Acutely Ill Patients (micro-SOAP) study investigated associations of microcirculation and mortality. Risk stratification in critically ill patients is of utmost interest. Established score such as APACHE2 (Acute Physiology And Chronic Health Evaluation 2) are relatively complex and might therefore be of limited use. Blood urea nitrogen (BUN) was described to be associated with mortality in various diseases. We therefore aimed (i) to evaluate BUN for prediction of mortality in a cohort of critically ill patients and (ii) to investigate associations of BUN with microcirculation...
2018: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29755348/the-fibrin-cleavage-product-b%C3%AE-15-42-channels-endothelial-and-tubular-regeneration-in-the-post-acute-course-during-murine-renal-ischemia-reperfusion-injury
#16
Dania Fischer, Christopher Seifen, Patrick Baer, Michaela Jung, Christina Mertens, Bertram Scheller, Kai Zacharowski, Rainer Hofmann, Thorsten J Maier, Anja Urbschat
Early and adequate restoration of endothelial and tubular renal function is a substantial step during regeneration after ischemia reperfusion (IR) injury, occurring, e.g., in kidney transplantation, renal surgery, and sepsis. While tubular epithelial cell injury has long been of central importance, recent perception includes the renal vascular endothelium. In this regard, the fibrin cleavage product fibrinopeptide Bβ15-42 mitigate IR injury by stabilizing interendothelial junctions through its affinity to VE-cadherin...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29755052/lessons-learned-from-data-collection-as-health-screening-in-underserved-farmworker-communities
#17
Joan Flocks, J Antonio Tovar, Eugenia Economos, Valerie Vi Thien Mac, Abby Mutic, Katherine Peterman, Linda McCauley
BACKGROUND: Girasoles is an academic-community partnership investigating heat-related illness (HRI) among farm-workers. An unexpected outcome is health screening and intervention for participants without access to health care. OBJECTIVES: We present a case of renal failure in a farmworker, detected during data collection, to illustrate how academic-community collaboration can result in clinical benefits for study participants. METHODS: Girasoles is examining physiologic responses to heat stress, associated vulnerability factors, and HRI symptoms...
2018: Progress in Community Health Partnerships: Research, Education, and Action
https://www.readbyqxmd.com/read/29753163/baseline-renal-function-and-albumin-are-powerful-predictors-for-allogeneic-transplantation-related-mortality
#18
Roni Shouval, Cornelis N de Jong, Joshua Fein, Annoek E C Broers, Ivetta Danylesko, Avichai Shimoni, Marloes R Reurs, Adája E Baars, Niels van der Schaft, Arnon Nagler, Jan J Cornelissen
RATIONALE: Biomarkers measured in blood chemistry before allogeneic hematopoietic stem cell transplantation (HSCT) may reflect patients' physiological status. We hypothesized that selected markers are predictive for non-relapse mortality (NRM) following transplantation and could contribute to risk assessment. PATIENTS AND METHODS: We investigated the value of pre-HSCT albumin, estimated glomerular filtration rate (eGFR) and alkaline phosphatase (AlkP) in predicting NRM...
May 9, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29751631/hydrogen-sulfide-in-hypertension-and-kidney-disease-of-developmental-origins
#19
REVIEW
Chien-Ning Hsu, You-Lin Tain
Adverse environments occurring during kidney development may produce long-term programming effects, namely renal programming, to create increased vulnerability to the development of later-life hypertension and kidney disease. Conversely, reprogramming is a strategy aimed at reversing the programming processes in early life, even before the onset of clinical symptoms, which may counter the rising epidemic of hypertension and kidney disease. Hydrogen sulfide (H₂S), the third gasotransmitter, plays a key role in blood pressure regulation and renal physiology...
May 11, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29747346/-phenotype-and-mechanism-of-inducible-ppp2r1a-knockout-mouse-model
#20
J L Fan, F P Wang, S Wang, X L Liu, X N Wu, W Chen, L P Chen, W X Li
Objective: Investigate the effects of inducible ppp2r1a knockout on main physiological function in adult mice and study the mechanism. Methods: Ppp2r1a(flox/flox) mice and CAGG-CreER mice were hybridized to obtain 20 CAGG-CreER ppp2r1a(flox/flox) and 20 mice in homozygous group. Two groups of mice were divided into 4 groups respectively, finally we got 8 groups with 5 mice in each group. Tamoxifen was injected intraperitoneally to acquire inducible ppp2r1a knockout mice. The knockout efficiency of PP2A Aα in vital organs was measured by Western blot...
May 6, 2018: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
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