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heat stress nephropathy

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https://www.readbyqxmd.com/read/28902745/is-heat-stress-nephropathy-a-concern-for-endurance-athletes
#1
E Randy Eichner
No abstract text is available yet for this article.
September 2017: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/28748118/serum-uric-acid-and-acute-kidney-injury-a-mini-review
#2
REVIEW
Kai Hahn, Mehmet Kanbay, Miguel A Lanaspa, Richard J Johnson, A Ahsan Ejaz
Acute kidney injury causes great morbidity and mortality in both the community and hospital settings. Understanding the etiological factors and the pathophysiological principles resulting in acute kidney injury is essential in prompting appropriate therapies. Recently hyperuricemia has been recognized as a potentially modifiable risk factor for acute kidney injury, including that associated with cardiovascular surgery, radiocontrast administration, rhabdomyolysis, and associated with heat stress. This review discussed the evidence that repeated episodes of acute kidney injury from heat stress and dehydration may also underlie the pathogenesis of the chronic kidney disease epidemic that is occurring in Central America (Mesoamerican nephropathy)...
September 2017: Journal of Advanced Research
https://www.readbyqxmd.com/read/28711961/heat-shock-protein-70-nitric-oxide-effect-on-stretched-tubular-epithelial-cells-linked-to-wt-1-cytoprotection-during-neonatal-obstructive-nephropathy
#3
Luciana Mazzei, Fernando Darío Cuello-Carrión, Neil Docherty, Walter Manucha
BACKGROUND: Mechanical stress is a key pathogenic driver of apoptosis in the tubular epithelium in obstructive nephropathy. Heat shock protein 70 (Hsp70) and Wilms' tumor (WT-1) have been proposed to represent linked downstream effectors of the cytoprotective properties of NO. In the present study, we sought to evaluate whether the cytoprotective effects of L-arginine in neonatal obstructive nephropathy may be associated with NO-dependent increases in WT-1 and Hsp70 expression. METHODS: Neonatal Wistar-Kyoto rats were submitted to complete unilateral ureteral obstruction (UUO) and treated thereafter with vehicle, L-NAME or L-arginine by daily gavage for 14 days to block or augment NO levels, respectively...
July 15, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28680529/mir-382-contributes-to-renal-tubulointerstitial-fibrosis-by-downregulating-hspd1
#4
Yi Fang, Ting Xie, Ning Xue, Qing Kuang, Zheng Wei, Mingyu Liang, Xiaoqiang Ding
Redox imbalance plays an important role in the pathogenesis of CKD progression. Previously, we demonstrated that microRNA-382 (miR-382) contributed to TGF-β1-induced loss of epithelial polarity in human kidney epithelial cells, but its role in the development of renal tubulointerstitial fibrosis remains unknown. In this study, we found that with 7 days of unilateral ureteral obstruction (UUO) in mice, the abundance of miR-382 in the obstructed kidney was significantly increased. Meanwhile, the protein expression of heat shock protein 60 (HSPD1), a predicted target of miR-382, was reduced after 7 days of UUO...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28631886/nlrp3-expression-and-urinary-hsp72-in-relation-to-biomarkers-of-inflammation-and-oxidative-stress-in-diabetic-nephropathy-patients
#5
Hemat El-Sayed El-Horany, Rania Nagi Abd-Ellatif, Mona Watany, Yasser M Hafez, Hanaa Ibrahim Okda
Diabetic nephropathy (DN) is one of the major causes of end-stage renal disease. Nod-like receptors nucleotide-binding domain and leucine-rich repeat pyrin-3 domain (NLRP3) inflammasome displays a considerable role in the chronic inflammatory state observed in diabetic patients. Urinary heat shock protein 72 (uHSP72) is a sensitive and specific biomarker for the early detection of acute kidney injury. The aim of this study was to evaluate NLRP3 relative gene expression, its correlation with inflammatory and oxidative stress markers, and to assess the value of uHSP72 in the early detection of DN in type 2 diabetic patients with different degrees of DN...
August 2017: IUBMB Life
https://www.readbyqxmd.com/read/28493961/aldosterone-signaling-regulates-the-over-expression-of-claudin-4-and-8-at-the-distal-nephron-from-type-1-diabetic-rats
#6
Eduardo Molina-Jijón, Rafael Rodríguez-Muñoz, Ricardo González-Ramírez, Carmen Namorado-Tónix, José Pedraza-Chaverri, Jose L Reyes
Hyperglycemia in diabetes alters tight junction (TJ) proteins in the kidney. We evaluated the participation of aldosterone (ALD), and the effect of spironolactone (SPL), a mineralocorticoid receptor antagonist, on the expressions of claudin-2, -4, -5 and -8, and occludin in glomeruli, proximal and distal tubules isolated from diabetic rats. Type 1 diabetes was induced in female Wistar rats by a single tail vein injection of streptozotocin (STZ), and SPL was administrated daily by gavage, from days 3-21. Twenty-one days after STZ injection the rats were sacrificed...
2017: PloS One
https://www.readbyqxmd.com/read/28426518/pathophysiologic-insight-into-mesoamerican-nephropathy
#7
Magdalena Madero, Fernando E García-Arroyo, Laura-Gabriela Sánchez-Lozada
PURPOSE OF REVIEW: Mesoamerican nephropathy (MeN) is an emerging pathophysiological entity of Chronic kidney desease (CKD) not related to traditional risk factors (diabetes and hypertension) that have caused thousands of deaths in Central America, mainly in sugarcane workers. The focus of this review is to discuss the risk factors and probable mechanisms involved in the initiation and progression of this devastating disease. RECENT FINDINGS: Frequent episodes of subclinical Acute kidney injury caused by repetitive heat stress, dehydration, and strenuous work have been regarded as the main risk factors for MeN...
July 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/28407135/pro-heat-stress-as-a-potential-etiology-of-mesoamerican-and-sri-lankan-nephropathy-a-late-night-consult-with-sherlock-holmes
#8
Richard J Johnson
Epidemics of chronic kidney disease are now recognized in Central America, Mexico, India and Sri Lanka, and there is also some evidence that similar epidemics may be occurring in the USA, Thailand and elsewhere. A common denominator for each location is manually working outside in extremely hot environments. Here we review the evidence that the primary etiology may be heat stress related to repeated subclinical or clinical acute kidney injury that eventually manifests as chronic kidney disease. In some aspects, the disease may manifest as subclinical heat stroke, subclinical rhabdomyolysis or a subclinical tumor lysis syndrome...
April 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28284375/toward-a-comprehensive-hypothesis-of-chronic-interstitial-nephritis-in-agricultural-communities
#9
REVIEW
Carlos Manuel Orantes-Navarro, Raúl Herrera-Valdés, Miguel Almaguer-López, Laura López-Marín, Xavier Fernando Vela-Parada, Marcelo Hernandez-Cuchillas, Lilly M Barba
Over the past 20 years, there has been an increase in chronic interstitial nephritis in agricultural communities (CINAC) not associated with traditional risk factors. This disease has become an important public health problem and is observed in several countries in Central America and Asia. CINAC predominantly affects young male farmers between the third and fifth decades of life with women, children, and adolescents less often affected. Clinically, CINAC behaves like a chronic tubulointerstitial nephropathy but with systemic manifestations not attributable to kidney disease...
March 2017: Advances in Chronic Kidney Disease
https://www.readbyqxmd.com/read/28196897/role-of-hsp60-hspd1-in-diabetes-induced-renal-tubular-dysfunction-regulation-of-intracellular-protein-aggregation-atp-production-and-oxidative-stress
#10
Siripat Aluksanasuwan, Kanyarat Sueksakit, Kedsarin Fong-Ngern, Visith Thongboonkerd
Because underlying mechanisms of diabetic nephropathy/tubulopathy remained poorly understood, we aimed to define a key protein involving in hyperglycemia-induced renal tubular dysfunction. All altered renal proteins identified from previous large-scale proteome studies were subjected to global protein network analysis, which revealed heat shock protein 60 (HSP60, also known as HSPD1) as the central node of protein-protein interactions. Functional validation was performed using small interfering RNA (siRNA) to knock down HSP60 (siHSP60)...
February 14, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28003190/effects-of-exogenous-desmopressin-on-a-model-of-heat-stress-nephropathy-in-mice
#11
Carlos A Roncal-Jimenez, Tamara Milagres, Ana Andres-Hernando, Masanari Kuwabara, Thomas Jensen, Zhilin Song, Petter Bjornstad, Gabriela E Garcia, Yuka Sato, Laura G Sanchez-Lozada, Miguel A Lanaspa, Richard J Johnson
Recurrent heat stress and dehydration have recently been shown experimentally to cause chronic kidney disease (CKD). One potential mediator may be vasopressin, acting via the type 2 vasopressin receptor (V2 receptor). We tested the hypothesis that desmopressin accelerates CKD in mice subjected to heat stress and recurrent dehydration. Recurrent exposure to heat with limited water availability was performed in male mice over a 5-wk period, with one group receiving desmopressin two times daily and the other group receiving vehicle...
March 1, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/27932336/heat-stress-hydration-and-uric-acid-a-cross-sectional-study-in-workers-of-three-occupations-in-a-hotspot-of-mesoamerican-nephropathy-in-nicaragua
#12
Catharina Wesseling, Aurora Aragón, Marvin González, Ilana Weiss, Jason Glaser, Christopher J Rivard, Carlos Roncal-Jiménez, Ricardo Correa-Rotter, Richard J Johnson
OBJECTIVES: To study Mesoamerican nephropathy (MeN) and its risk factors in three hot occupations. DESIGN: Cross-sectional. SETTING: Chinandega and León municipalities, a MeN hotspot on the Nicaraguan Pacific coast, January-February 2013. PARTICIPANTS: 194 male workers aged 17-39 years: 86 sugarcane cutters, 56 construction workers, 52 small-scale farmers. OUTCOME MEASURES: (1) Differences between the three occupational groups in prevalences/levels of socioeconomic, occupational, lifestyle and health risk factors for chronic kidney disease (CKD) and in biomarkers of kidney function and hydration; (2) differences in prevalences/levels of CKD risk factors between workers with reduced estimated glomerular filtration rate (eGFRCKD-EPI <80 mL/min/1...
December 8, 2016: BMJ Open
https://www.readbyqxmd.com/read/27545596/heat-shock-proteins-and-diabetes
#13
REVIEW
Marzie Zilaee, Saeed Shirali
Diabetes is a chronic disease, and its prevalence continues to rise and can increase the risk for the progression of microvascular (such as nephropathy, retinopathy and neuropathy) and also macrovascular complications. Diabetes is a condition in which the oxidative stress and inflammation rise. Heat shock proteins (HSPs) are a highly conserved family of proteins that are expressed by all cells exposed to environmental stress, and they have diverse functions. In patients with diabetes, the expression and levels of HSPs decrease, but these chaperones can aid in improving some complications of diabetes, such as oxidative stress and inflammation...
December 2016: Canadian Journal of Diabetes
https://www.readbyqxmd.com/read/27151892/climate-change-and-the-emergent-epidemic-of-ckd-from-heat-stress-in-rural-communities-the-case-for-heat-stress-nephropathy
#14
Jason Glaser, Jay Lemery, Balaji Rajagopalan, Henry F Diaz, Ramón García-Trabanino, Gangadhar Taduri, Magdalena Madero, Mala Amarasinghe, Georgi Abraham, Sirirat Anutrakulchai, Vivekanand Jha, Peter Stenvinkel, Carlos Roncal-Jimenez, Miguel A Lanaspa, Ricardo Correa-Rotter, David Sheikh-Hamad, Emmanuel A Burdmann, Ana Andres-Hernando, Tamara Milagres, Ilana Weiss, Mehmet Kanbay, Catharina Wesseling, Laura Gabriela Sánchez-Lozada, Richard J Johnson
Climate change has led to significant rise of 0.8°C-0.9°C in global mean temperature over the last century and has been linked with significant increases in the frequency and severity of heat waves (extreme heat events). Climate change has also been increasingly connected to detrimental human health. One of the consequences of climate-related extreme heat exposure is dehydration and volume loss, leading to acute mortality from exacerbations of pre-existing chronic disease, as well as from outright heat exhaustion and heat stroke...
August 8, 2016: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/26455995/heat-stress-nephropathy-from-exercise-induced-uric-acid-crystalluria-a-perspective-on-mesoamerican-nephropathy
#15
Carlos Roncal-Jimenez, Ramón García-Trabanino, Lars Barregard, Miguel A Lanaspa, Catharina Wesseling, Tamara Harra, Aurora Aragón, Felix Grases, Emmanuel R Jarquin, Marvin A González, Ilana Weiss, Jason Glaser, Laura G Sánchez-Lozada, Richard J Johnson
Mesoamerican nephropathy (MeN), an epidemic in Central America, is a chronic kidney disease of unknown cause. In this article, we argue that MeN may be a uric acid disorder. Individuals at risk for developing the disease are primarily male workers exposed to heat stress and physical exertion that predisposes to recurrent water and volume depletion, often accompanied by urinary concentration and acidification. Uric acid is generated during heat stress, in part consequent to nucleotide release from muscles. We hypothesize that working in the sugarcane fields may result in cyclic uricosuria in which uric acid concentrations exceed solubility, leading to the formation of dihydrate urate crystals and local injury...
January 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/26307981/ages-induced-il-6-synthesis-precedes-rage-up-regulation-in-hek-293-cells-an-alternative-inflammatory-mechanism
#16
Andreea Iren Serban, Loredana Stanca, Ovidiu Ionut Geicu, Anca Dinischiotu
Advanced glycation end products (AGEs) can activate the inflammatory pathways involved in diabetic nephropathy. Understanding these molecular pathways could contribute to therapeutic strategies for diabetes complications. We evaluated the modulation of inflammatory and oxidative markers, as well as the protective mechanisms employed by human embryonic kidney cells (HEK 293) upon exposure to 200 μg/mL bovine serum albumine (BSA) or AGEs-BSA for 12, 24 and 48 h. The mRNA and protein expression levels of AGEs receptor (RAGE) and heat shock proteins (HSPs) 27, 60 and 70, the activity of antioxidant enzymes and the expression levels of eight cytokines were analysed...
2015: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/26228633/mediators-and-mechanisms-of-heat-shock-protein-70-based-cytoprotection-in-obstructive-nephropathy
#17
REVIEW
Luciana Mazzei, Neil G Docherty, Walter Manucha
Urinary heat shock protein 70 (Hsp70) is rapidly increased in patients with clinical acute kidney injury, indicating that it constitutes a component of the endogenous stress response to renal injury. Moreover, experimental models have demonstrated that Hsp70 activation is associated with the cytoprotective actions of several drugs following obstruction, including nitric oxide (NO) donors, geranylgeranylacetone, vitamin D, and rosuvastatin. Discrete and synergistic effects of the biological activities of Hsp70 may explain its cytoprotective role in obstructive nephropathy...
November 2015: Cell Stress & Chaperones
https://www.readbyqxmd.com/read/26209462/heat-stress-dehydration-and-kidney-function-in-sugarcane-cutters-in-el-salvador-a-cross-shift-study-of-workers-at-risk-of-mesoamerican-nephropathy
#18
Ramón García-Trabanino, Emmanuel Jarquín, Catharina Wesseling, Richard J Johnson, Marvin González-Quiroz, Ilana Weiss, Jason Glaser, Juan José Vindell, Leo Stockfelt, Carlos Roncal, Tamara Harra, Lars Barregard
BACKGROUND: An epidemic of progressive kidney failure afflicts sugarcane workers in Central America. Repeated high-intensity work in hot environments is a possible cause. OBJECTIVES: To assess heat stress, dehydration, biomarkers of renal function and their possible associations. A secondary aim was to evaluate the prevalence of pre-shift renal damage and possible causal factors. METHODS: Sugarcane cutters (N=189, aged 18-49 years, 168 of them male) from three regions in El Salvador were examined before and after shift...
October 2015: Environmental Research
https://www.readbyqxmd.com/read/26116697/targeting-hsp90-ameliorates-nephropathy-and-atherosclerosis-through-suppression-of-nf-%C3%AE%C2%BAb-and-stat-signaling-pathways-in-diabetic-mice
#19
Iolanda Lazaro, Ainhoa Oguiza, Carlota Recio, Beñat Mallavia, Julio Madrigal-Matute, Julia Blanco, Jesus Egido, Jose-Luis Martin-Ventura, Carmen Gomez-Guerrero
Heat shock proteins (HSPs) are induced by cellular stress and function as molecular chaperones that regulate protein folding. Diabetes impairs the function/expression of many HSPs, including HSP70 and HSP90, key regulators of pathological mechanisms involved in diabetes complications. Therefore, we investigated whether pharmacological HSP90 inhibition ameliorates diabetes-associated renal damage and atheroprogression in a mouse model of combined hyperglycemia and hyperlipidemia (streptozotocin-induced diabetic apolipoprotein E-deficient mouse)...
October 2015: Diabetes
https://www.readbyqxmd.com/read/25567807/impact-of-er-stress-regulated-atf4-p16-signaling-on-the-premature-senescence-of-renal-tubular-epithelial-cells-in-diabetic-nephropathy
#20
Jun Liu, Ju-Rong Yang, Xiang-Mei Chen, Guang-Yan Cai, Li-Rong Lin, Ya-Ni He
Premature senescence is an important event during diabetic nephropathy (DN) progression. Here, we investigated the role of endoplasmic reticulum (ER) stress-regulated activation of transcription factor 4 (ATF4)/p16 signaling in the premature senescence of renal tubular epithelial cells (RTECs) during DN development. In the renal tissues of Type 2 DN patients, we detected an increased number of senescent cells; elevated deposition of advanced glycation end products (AGEs); upregulated expression of ER stress marker, glucose-regulated protein 78; as well as overexpression of ATF4 and p16...
April 15, 2015: American Journal of Physiology. Cell Physiology
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