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salt and progression of renal disease

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https://www.readbyqxmd.com/read/29767672/blockade-of-tlr4-within-the-paraventricular-nucleus-attenuates-blood-pressure-by-regulating-ros-and-inflammatory-cytokines-in-prehypertensive-rats
#1
Mo-Lin Wang, Xiao-Jing Yu, Xiao-Guang Li, De-Zhi Pang, Qing Su, Roland Osei Saahene, Hong-Bao Li, Xu-Ying Mao, Kai-Li Liu, Li-Yan Fu, Ying Li, Guo-Qing Zhu, Yu-Ming Kang
Background: Toll like receptor 4 (TLR4) has been implicated in the progression of cardiovascular disease, including hypertension. However, the role of TLR4 in the development of prehypertension is uncertain. Methods: Prehypertensive rats were treated with 8% salt for 12 weeks to induce prehypertension. These rats were then given either TAK-242 selective TLR4 blocker, or vehicle by bilateral micro-injection to the paraventricular nucleus (PVN). Blood pressure and renal sympathetic nerve activity were recorded...
May 15, 2018: American Journal of Hypertension
https://www.readbyqxmd.com/read/29736201/niclosamide-ethanolamine-improves-diabetes-and-diabetic-kidney-disease-in-mice
#2
Pengxun Han, Mumin Shao, Lan Guo, Wenjing Wang, Gaofeng Song, Xuewen Yu, Chunlei Zhang, Na Ge, Tiegang Yi, Shunmin Li, Heng Du, Huili Sun
Diabetes and its renal complications are major medical challenges worldwide. There are no effective drugs currently available for treating diabetes and diabetic kidney disease (DKD), especially in type 1 diabetes (T1D). Evidence has suggested that niclosamide ethanolamine salt (NEN) could improve diabetic symptoms in mice of type 2 diabetes (T2D). However, its role in T1D and DKD has not been studied to date. Here we report that NEN could protect against diabetes in streptozotocin (STZ) induced T1D mice. It increased serum insulin levels, corrected the unbalanced ratio of α-cells to β-cells, and induced islet morphologic changes under diabetic conditions...
2018: American Journal of Translational Research
https://www.readbyqxmd.com/read/29684554/short-term-oral-gavage-administration-of-adenine-induces-a-model-of-fibrotic-kidney-disease-in-rats
#3
Chang Z Zhu, Kelly J Doyle, Arthur L Nikkel, Lauren Olsen, Marian T Namovic, Katherine Salte, Deborah Widomski, Zhi Su, Diana L Donnelly-Roberts, Murali M Gopalakrishnan, Steve McGaraughty
INTRODUCTION: The adenine model of kidney disease typically involves dietary delivery of adenine over several weeks. This model can be variable in its disease progression and can result in significant mortality. In the current study, the amount of adenine delivered to rats was controlled by utilizing oral gavage administration over a short period in an attempt to induce robust renal pathology while addressing variability and viability of the animals. METHODS: Adenine (150 or 200 mg/kg) was administered via oral gavage for 10 consecutive days, and assessed over a total of 20 days...
April 20, 2018: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/29650676/sodium-bicarbonate-loading-limits-tubular-cast-formation-independent-of-glomerular-injury-and-proteinuria-in-dahl-salt-sensitive-rats
#4
S C Ray, B Patel, D L Irsik, J Sun, H Ocasio, G R Crislip, C H Jin, J K Chen, B Baban, A J Polichnowski, P M O'Connor
Sodium bicarbonate (NaHCO3 ) slows the decline in kidney function in patients with chronic kidney disease (CKD), yet the mechanisms mediating this effect remain unclear. The Dahl salt-sensitive (SS) rat develops hypertension and progressive renal injury when fed a high salt diet; however, the effect of alkali loading on kidney injury has never been investigated in this model. We hypothesized that 'NaHCO3 protects from the development of renal injury in Dahl salt-sensitive rats via luminal alkalization which limits the formation of tubular casts, which are a prominent pathological feature in this model...
April 12, 2018: Clinical Science (1979-)
https://www.readbyqxmd.com/read/29606258/treatment-of-iga-nephropathy-recent-advances-and-prospects
#5
REVIEW
Rosanna Coppo
IgA nephropathy, identified 50 years ago in France, is the most frequent glomerular disease worldwide. The course is variable, but in most of the cases there is a relentless decline in renal function, reaching end-stage renal failure in 10-60% of the cases after 10 years and in 40% after 20 years. These data justify the interest for finding a suitable therapeutic approach particularly in progressive cases. A supportive care, including renin-angiotensin system inhibitors is the priority in cases with slowly declining renal function, particularly when developing proteinuria...
April 2018: Néphrologie & Thérapeutique
https://www.readbyqxmd.com/read/29553830/medullary-thick-ascending-limb-impairment-in-the-gla-tm-tg-cag-a4galt-fabry-model-mice
#6
Hiroki Maruyama, Atsumi Taguchi, Yuji Nishikawa, Chu Guili, Mariko Mikame, Masaaki Nameta, Yutaka Yamaguchi, Mitsuhiro Ueno, Naofumi Imai, Yumi Ito, Takahiko Nakagawa, Ichiei Narita, Satoshi Ishii
A main feature of Fabry disease is nephropathy, with polyuria an early manifestation; however, the mechanism that underlies polyuria and affected tubules is unknown. To increase globotriaosylceramide (Gb3) levels, we previously crossbred asymptomatic Glatm mice with transgenic mice that expressed human Gb3 synthase (A4GALT) and generated the Glatm Tg(CAG-A4GALT) symptomatic Fabry model mice. Additional analyses revealed that these mice exhibit polyuria and renal dysfunction without remarkable glomerular damage...
March 19, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29422652/rage-aptamer-attenuates-deoxycorticosterone-acetate-salt-induced-renal-injury-in-mice
#7
Kensei Taguchi, Sho-Ichi Yamagishi, Miyuki Yokoro, Sakuya Ito, Goh Kodama, Yusuke Kaida, Yosuke Nakayama, Ryotaro Ando, Nana Yamada-Obara, Katsuhiko Asanuma, Takanori Matsui, Yuichiro Higashimoto, Craig R Brooks, Seiji Ueda, Seiya Okuda, Kei Fukami
The mineralocorticoid receptor (MR) and its downstream signaling play an important role in hypertensive renal injury. The interaction of advanced glycation end products (AGE) with their receptor (RAGE) is involved in the progression of renal disease. However, the pathological crosstalk between AGE-RAGE axis and MR system in kidney derangement remains unclear. We screened DNA-aptamer directed against RAGE (RAGE-apt) in vitro and examined its effects on renal injury in uninephrectomized deoxycorticosterone acetate (DOCA)/salt-induced hypertensive mice...
February 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29409778/phase-iii-randomized-trial-comparing-5-fluorouracil-and-oxaliplatin-with-or-without-docetaxel-in-first-line-advanced-gastric-cancer-chemotherapy-gastfox-study
#8
Aziz Zaanan, Emmanuelle Samalin, Thomas Aparicio, Olivier Bouche, Pierre Laurent-Puig, Sylvain Manfredi, Pierre Michel, Carole Monterymard, Marie Moreau, Philippe Rougier, David Tougeron, Julien Taieb, Christophe Louvet
INTRODUCTION: In advanced gastric cancer, doublet regimen including platinum salts and fluoropyrimidine is considered as a standard first-line treatment. The addition of docetaxel (75 mg/m2  q3w) to cisplatin (75 mg/m2  q3w) and 5-fluorouracil has been shown to improve efficacy. However, this regimen (DCF) was associated with frequent severe toxicities (including more complicated neutropenia), limiting its use in clinical practice. Interesting alternative docetaxel-based regimens have been developed that need to be validated...
April 2018: Digestive and Liver Disease
https://www.readbyqxmd.com/read/29357410/tamm-horsfall-protein-uromodulin-deficiency-elicits-tubular-compensatory-responses-leading-to-hypertension-and-hyperuricemia
#9
Yan Liu, David Goldfarb, Tarek M El-Achkar, John C Lieske, Xue-Ru Wu
Expression of Tamm-Horsfall protein (THP or uromodulin) is highly restricted to the kidneys' thick ascending limb (TAL) of loop of Henle. Despite the unique location and recent association of THP gene mutations with hereditary uromodulin-associated kidney disease and THP single nucleotide polymorphisms with chronic kidney disease and hypertension, the physiological function(s) of THP and its pathological involvement remain incompletely understood. By studying age-dependent changes of THP knockout (KO) mice, we show here that young KO mice had significant salt and water wasting but were partially responsive to furosemide, due to decreased luminal translocation of Na-K-Cl cotransporter 2 (NKCC2) in the TAL...
January 10, 2018: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/29146141/the-myth-of-water-and-salt-from-aquaretics-to-tenapanor
#10
REVIEW
Luca Visconti, Valeria Cernaro, Sebastiano Calimeri, Antonio Lacquaniti, Francesca De Gregorio, Carlo Alberto Ricciardi, Viviana Lacava, Domenico Santoro, Michele Buemi
The impact of water intake has been studied in several renal diseases. For example, increasing water intake is useful to prevent primary and secondary nephrolithiasis. In autosomal dominant polycystic kidney disease, arginine vasopressin (AVP) is involved in the progression of the disease, and water intake could play a therapeutic role by inhibiting the synthesis of AVP, but its efficacy is still controversial. Conversely, the use of aquaretics, which are antagonists of AVP V2 receptors, results in the reduction of the increase rate of total kidney volume with a slower decline of glomerular filtration rate...
March 2018: Journal of Renal Nutrition
https://www.readbyqxmd.com/read/29027259/early-urinary-biomarkers-of-renal-tubular-damage-by-a-high-salt-intake-independent-of-blood-pressure-in-normotensive-rats
#11
Satoshi Washino, Keiko Hosohata, Denan Jin, Shinji Takai, Tomoaki Miyagawa
Dietary sodium intake has been associated with progression to chronic kidney disease (CKD) as well as hypertension. A high-salt intake causes renal damage independent of hypertension. Because traditional renal biomarkers are insensitive, it is difficult to detect renal injury induced by a high-salt intake, especially in normotensive patients. Here, we investigated whether newly developed renal biomarkers could be detected earlier than traditional biomarkers under a high-salt intake, in normotensive rats. Male Wistar Kyoto rats (WKY) received a regular (0...
March 2018: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28973979/biomarkers-for-chronic-kidney-disease-associated-with-high-salt-intake
#12
REVIEW
Keiko Hosohata
High salt intake has been related to the development to chronic kidney disease (CKD) as well as hypertension. In its early stages, symptoms of CKD are usually not apparent, especially those that are induced in a "silent" manner in normotensive individuals, thereby providing a need for some kind of urinary biomarker to detect injury at an early stage. Because traditional renal biomarkers such as serum creatinine are insensitive, it is difficult to detect kidney injury induced by a high-salt diet, especially in normotensive individuals...
September 30, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28929450/intrarenal-angiotensin-converting-enzyme-the-old-and-the-new
#13
REVIEW
Silas Culver, Caixia Li, Helmy M Siragy
PURPOSE OF REVIEW: The intrarenal renin-angiotensin-aldosterone system (RAS) is an independent paracrine hormonal system with an increasingly prominent role in hypertension and renal disease. Two enzyme components of this system are angiotensin-converting enzyme (ACE) and more recently discovered ACE2. The purpose of this review is to describe recent discoveries regarding the roles of intrarenal ACE and ACE2 and their interaction. RECENT FINDINGS: Renal tubular ACE contributes to salt-sensitive hypertension...
September 19, 2017: Current Hypertension Reports
https://www.readbyqxmd.com/read/28873450/bromide-supplementation-exacerbated-the-renal-dysfunction-injury-and-fibrosis-in-a-mouse-model-of-alport-syndrome
#14
Tsubasa Yokota, Kohei Omachi, Mary Ann Suico, Haruka Kojima, Misato Kamura, Keisuke Teramoto, Shota Kaseda, Jun Kuwazuru, Tsuyoshi Shuto, Hirofumi Kai
A seminal study recently demonstrated that bromide (Br-) has a critical function in the assembly of type IV collagen in basement membrane (BM), and suggested that Br- supplementation has therapeutic potential for BM diseases. Because salts of bromide (KBr and NaBr) have been used as antiepileptic drugs for several decades, repositioning of Br- for BM diseases is probable. However, the effects of Br- on glomerular basement membrane (GBM) disease such as Alport syndrome (AS) and its impact on the kidney are still unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28862701/deletion-of-nedd4-2-results-in-progressive-kidney-disease-in-mice
#15
Tanya L Henshall, Jantina A Manning, Omri S Alfassy, Pranay Goel, Natasha A Boase, Hiroshi Kawabe, Sharad Kumar
NEDD4-2 (NEDD4L), a ubiquitin protein ligase of the Nedd4 family, is a key regulator of cell surface expression and activity of the amiloride-sensitive epithelial Na+ channel (ENaC). While hypomorphic alleles of Nedd4-2 in mice show salt-sensitive hypertension, complete knockout results in pulmonary distress and perinatal lethality due to increased cell surface levels of ENaC. We now show that Nedd4-2 deficiency in mice also results in an unexpected progressive kidney injury phenotype associated with elevated ENaC and Na+ Cl- cotransporter expression, increased Na+ reabsorption, hypertension and markedly reduced levels of aldosterone...
December 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28682025/-hypertension-in-chronic-kidney-disease
#16
Antonio De Pascalis, Alessandro Balducci
The progression of chronic kidney disease CKD is largely independent of the underlying kidney disorder once renal function has fallen below a critical level. Hypertension is an independent risk factor for disease progression in both adult and pediatric patients with kidney disorders. Optimal blood pressure control (130 /80mm Hg) represents a main goal of conservative therapy in patients with chronic kidney disease CKD but it is rarely achieved in clinical practice. Angiotensin-converting enzyme inhibitors and angiotensin receptor blockers are more effective than other drugs in slowing progression of proteinuric CKD...
March 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28656379/physiology-and-pathophysiology-of-the-plasminogen-system-in-the-kidney
#17
REVIEW
Per Svenningsen, Gitte Rye Hinrichs, Rikke Zachar, Rikke Ydegaard, Boye L Jensen
The plasminogen system is important for fibrinolysis in addition to tissue remodeling and inflammation with significance for kidney disease. The system consists of the circulating zymogen plasminogen (Plg) and the tissue- and urokinase-type plasminogen activators, tPA and uPA, expressed in the glomeruli, endothelium and tubular epithelium, respectively, and the inhibitors α2 -antiplasmin and plasminogen activator inhibitor-type1, PAI-1. Plasminogen is activated by surface receptors, some with renal expression: urokinase-type plasminogen activator receptor (uPAR), plasminogen receptor KT (Plg-RKT ), and tPA, most evident in the endothelium...
November 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28577072/regulation-of-renal-na-k-cl-cotransporters-by-vasopressin
#18
REVIEW
Sebastian Bachmann, Kerim Mutig
Vasopressin (AVP) induces antidiuresis, thus playing an essential role in body water and electrolyte homeostasis. Its antidiuretic effects are mediated chiefly by V2 vasopressin receptors (V2R) expressed along the distal nephron and collecting duct epithelia. NaCl reabsorption in the distal nephron, which includes the thick ascending limb (TAL) and distal convoluted tubule (DCT), largely depends on the activity of two structurally related Na-(K)-Cl cotransporters, NKCC2 in TAL and NCC in DCT. AVP-induced activation of these transporters contributes to urine concentration and renal electrolyte reabsorption...
August 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28560105/the-metabolic-profile-of-a-rat-model-of-chronic-kidney-disease
#19
Yohei Tanada, Junji Okuda, Takao Kato, Eri Minamino-Muta, Ichijiro Murata, Tomoyoshi Soga, Tetsuo Shioi, Takeshi Kimura
BACKGROUND: The kidney is always subjected to high metabolic demand. The aim of this study was to characterize metabolic profiles of a rat model of chronic kidney disease (CKD) with cardiorenal syndrome (CRS) induced by prolonged hypertension. METHODS: We used inbred male Dahl salt-sensitive (DS) rats fed an 8% NaCl diet from six weeks of age (high-salt; HS group) or a 0.3% NaCl diet as controls (low-salt; LS group). We analyzed function, pathology, metabolome, and the gene expression related to energy metabolism of the kidney...
2017: PeerJ
https://www.readbyqxmd.com/read/28555299/life-with-one-kidney
#20
Michiel F Schreuder
Life with a solitary functioning kidney (SFK) may be different from that when born with two kidneys. Based on the hyperfiltration hypothesis, a SFK may lead to glomerular damage with hypertension, albuminuria and progression towards end-stage renal disease. As the prognosis of kidney donors was considered to be very good, having a SFK has been considered to be a benign condition. In contrast, our research group has demonstrated that being born with or acquiring a SFK in childhood results in renal injury before adulthood in over 50% of those affected...
April 2018: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
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