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https://www.readbyqxmd.com/read/29660398/molecular-phenotypes-of-the-human-kidney-myoid-stromal-cells-telocytes-and-myoepithelial-cells
#1
M C Rusu, L Mogoantă, F Pop, M A Dobra
The connective stromal and epithelial compartments of the kidney have regenerative potential and phenotypic flexibility. A few studies have shown that cells appertaining to both compartments can exhibit myoid phenotypes. The purpose of our study was to investigate the myoid pattern of kidney and its association with the kidney niches containing stromal cells/telocytes (SC/TCs). We performed an immunohistochemical study using a panel of endothelial, myoid, mesenchymal and stem/progenitor markers, namely CD31, CD34, CD105 (endoglin), CD117/c-kit, nestin, desmin, α-smooth muscle actin (α-SMA) and the heavy chain of smooth muscle myosin (SMM)...
April 13, 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29644057/clinical-and-pathological-phenotype-of-genetic-causes-of-focal-segmental-glomerulosclerosis-in-adults
#2
Nicola Lepori, Ladan Zand, Sanjeev Sethi, Gema Fernandez-Juarez, Fernando C Fervenza
Focal segmental glomerulosclerosis (FSGS) is a histologic lesion resulting from a variety of pathogenic processes that cause injury to the podocytes. Recently, mutations in more than 50 genes expressed in podocyte or glomerular basement membrane were identified as causing genetic forms of FSGS, the majority of which are characterized by onset in childhood. The prevalence of adult-onset genetic FSGS is likely to be underestimated and its clinical and histological features have not been clearly described. A small number of studies of adult-onset genetic FSGS showed that there is heterogeneity in clinical and histological findings, with a presentation ranging from sub-nephrotic proteinuria to full nephrotic syndrome...
April 2018: Clinical Kidney Journal
https://www.readbyqxmd.com/read/29643035/-correlation-between-expressions-of-vegf-and-trpc6-and-their-roles-in-podocyte-injury-in-rats-with-diabetic-nephropathy
#3
Xiao-Na Zhu, Yu-Huan Wang, Juan-Juan Wu, Peng Dong, Min Zhang
OBJECTIVE: To analyze the correlation between the expressions of vascular endothelial growth factor (VEGF) and transient receptor potential canonical 6 (TRPC6) and their role in podocyte injury in rats with diabetic nephropathy. METHODS: Forty SD rats with diabetic nephropathy induced by intraperitoneal injection of 65 mg/kg streptozotocin were randomized equally into 5 groups, including a diabetic nephropathy model group and 4 treatment groups, with 8 normal SD rats as the normal control group...
March 20, 2018: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/29629372/glomerular-endothelial-cells-stress-and-cross-talk-with-podocytes-in-the-development-of-diabetic-kidney-disease
#4
REVIEW
Ilse Sofia Daehn
Diabetic kidney disease (DKD) is one of the major causes of morbidity and mortality in diabetic patients and also the leading single cause of end-stage renal disease in the United States. A large proportion of diabetic patients develop DKD and others don't, even with comparable blood glucose levels, indicating a significant genetic component of disease susceptibility. The glomerulus is the primary site of diabetic injury in the kidney, glomerular hypertrophy and podocyte depletion are glomerular hallmarks of progressive DKD, and the degree of podocyte loss correlates with severity of the disease...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29629277/weight-loss-has-an-additive-effect-on-the-proteinuria-reduction-of-angiotensin-ii-receptor-blockers-in-hypertensive-patients-with-chronic-kidney-disease
#5
Shin Young Ahn, Dong Ki Kim, Seung Seok Han, Jung Hwan Park, Sung Joon Shin, Sang Ho Lee, Bum Soon Choi, Chun Soo Lim, Suhnggwon Kim, Ho Jun Chin
Background: Weight reduction is a lifestyle intervention that has been introduced for prevention and management of chronic kidney disease (CKD). We investigate the additive anti-proteinuric effect of weight reduction on the usage of angiotensin II receptor blockers (ARBs) and its potential mechanisms in hypertensive CKD patients. Methods: This study is a subanalysis of data from an open-label, randomized, controlled clinical trial. Among the 235 participants, 227 were assigned to subgroups according to changes in body weight...
March 2018: Kidney Research and Clinical Practice
https://www.readbyqxmd.com/read/29627526/role-of-akr1c3-in-renal-injury-and-glibenclamide-is-anti-inflammatory-in-preeclamptic-rats
#6
Cheng-Juan Sun, Ya Jin, Wei-Yuan Zhang, Lin Li, Xiao-Wei Liu
Proteinuria is a common adverse effect of renal injury in preeclampsia. To explore the effects of AKR1C3 in renal injury due to preeclampsia and to determine an optimal method to prevent proteinuria, glibenclamide treatment was used in unrestrained Wistar rats exposed to N-nitro-L-arginine methyl ester hydrochloride (L-NAME). Successful rat models for preeclampsia were confirmed based on mean arterial pressure, a 24-h protein urine test, and by observing the structure of the kidney by transmission electron microscopy (TEM)...
April 5, 2018: Gene
https://www.readbyqxmd.com/read/29621776/carnosine-catalyzes-the-formation-of-the-oligo-polymeric-products-of-methylglyoxal
#7
Tim Weigand, Benjamin Singler, Thomas Fleming, Peter Nawroth, Karel D Klika, Christian Thiel, Hans Baelde, Sven F Garbade, Andreas H Wagner, Markus Hecker, Benito A Yard, Albert Amberger, Johannes Zschocke, Claus P Schmitt, Verena Peters
BACKGROUND/AIMS: Reactive dicarbonyl compounds, such as methylglyoxal (MG), contribute to diabetic complications. MG-scavenging capacities of carnosine and anserine, which have been shown to mitigate diabetic nephropathy, were evaluated in vitro and in vivo. METHODS: MG-induced cell toxicity was characterized by MTT and MG-H1-formation, scavenging abilities by Western Blot and NMR spectroscopies, cellular carnosine transport by qPCR and microplate luminescence and carnosine concentration by HPLC...
March 29, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29620171/tripterygium-glycoside-protects-against-puromycin-amino-nucleoside%C3%A2-induced-podocyte-injury-by-upregulating-autophagy
#8
Jianguang Gong, Juan Jin, Li Zhao, Yiqiao Li, Yiwen Li, Qiang He
Tripterygium glycoside (TG), an active ingredient of the widely used Chinese herb Tripterygium wilfordii Hook F, has immunosuppressive and anti‑inflammatory effects. Previous studies have indicated that TG is a potentially effective therapeutic option to treat nephrotic syndrome. The mechanism underlying the therapeutic effect of TG, including its effect on autophagy and apoptosis in podocyte injury, remains to be fully elucidated. The present study aimed to assess the protective effect of TG on podocytes via its potential role in the activation of autophagic and phosphatidylinositol 3‑kinase (PI3K) pathways...
March 29, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29619899/salvia-przewalskii-extract-of-total-phenolic-acids-inhibit-tlr4-signaling-activation-in-podocyte-injury-induced-by-puromycin-aminonucleoside-in-vitro
#9
Hongqi Ren, Xueqing Hu, Yun Liu, Deshu Dai, Xiang Liu, Zenghui Wang, Yang Yang, Xiangyang Li, Ying Liu, Renxian Tang
BACKGROUND: TLR4 signaling is known to be involved in podocyte injury. We have previously shown that Salvia przewalskii extract of total phenolic acids (SPE) and its active monomer salvianolic acid B (SalB) and rosmarinic acid (RA) protect podocytes from injury induced by PAN. In the present study, we test whether SPE inhibits TLR4 signaling. METHODS: The conditionally immortalized mouse podocytes were treated with SPE, SalB, RA, SalB + RA or tacrolimus for 30 min, followed by PAN (100 μg/mL) for 24 h...
November 2018: Renal Failure
https://www.readbyqxmd.com/read/29611334/conditional-ablation-of-the-prorenin-receptor-in-nephron-progenitor-cells-results-in-developmental-programming-of-hypertension
#10
Renfang Song, Laura Kidd, Adam Janssen, Ihor V Yosypiv
Nephron induction during kidney development is driven by reciprocal interactions between progenitor cells (NPCs) of the cap mesenchyme (CM) and the ureteric bud (UB). The prorenin receptor (PRR) is a receptor for renin and prorenin, and an accessory subunit of the vacuolar proton pump V-ATPase. Previously, we demonstrated that conditional ablation of the PRR in Six2+ NPCs in mice (Six2PRR -/- ) causes early neonatal death. Here, we identified genes that are regulated by PRR in Six2+ NPCs FACS-isolated from Six2PRR -/- and control kidneys on embryonic day E15...
April 2018: Physiological Reports
https://www.readbyqxmd.com/read/29608912/glomerular-mitochondrial-changes-in-hiv-associated-renal-injury
#11
Joseph L Bryant, Poornachander R Guda, Girma Asemu, Rogin Subedi, Sugata Ray, Omar S Khalid, Vivek Shukla, Dhruvil Patel, Harry Davis, Vamshi K C Nimmagadda, Tapas K Makar
HIV-associated nephropathy (HIVAN) is an AIDs-related disease of the kidney. HIVAN is characterized by severe proteinuria, podocyte hyperplasia, collapse, glomerular, and tubulointerstitial damage. HIV-1 transgenic (Tg26) mouse is the most popular model to study the HIV manifestations that develop similar renal presentations as HIVAN. Viral proteins, including Tat, Nef, and Vpr play a significant role in renal cell damage. It has been shown that mitochondrial changes are involved in several kidney diseases, and therefore, mitochondrial dysfunction may be implicated in the pathology of HIVAN...
March 30, 2018: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/29608407/epitope-mapping-of-monoclonal-antibody-pmab-48-against-dog-podoplanin
#12
Shinji Yamada, Mika K Kaneko, Shunsuke Itai, Yao-Wen Chang, Takuro Nakamura, Miyuki Yanaka, Satoshi Ogasawara, Takeshi Murata, Hiroaki Uchida, Hideaki Tahara, Hiroyuki Harada, Yukinari Kato
Podoplanin (PDPN), a type I transmembrane sialoglycoprotein, is expressed on normal renal podocytes, pulmonary type I alveolar cells, and lymphatic endothelial cells. Increased expression of PDPN in cancers is associated with poor prognosis and hematogenous metastasis through interactions with C-type lectin-like receptor 2 (CLEC-2) on platelets. We previously reported a novel PMab-48 antibody, which is an anti-dog PDPN (dPDPN) monoclonal antibody (mAb) recognizing PDPN expressed in lymphatic endothelial cells...
April 2, 2018: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/29604956/berberine-ameliorates-diabetic-nephropathy-by-inhibiting-tlr4-nf-%C3%AE%C2%BAb-pathway
#13
Liping Zhu, Jiakai Han, Rongrong Yuan, Lei Xue, Wuyan Pang
BACKGROUND: Diabetic nephropathy (DN) is the leading cause of end-stage renal failure, contributing to severe morbidity and mortality in diabetic patients. Berberine (BBR) has been well characterized to exert renoprotective effects in DN progression. However, the action mechanism of BBR in DN remains to be fully understood. METHODS: The DN rat model was generated by intraperitoneal injection of streptozotocin (STZ, 65 mg/kg body weight) while 30 mM high glucose (HG)-treated podocytes were used as an in vitro DN model...
March 31, 2018: Biological Research
https://www.readbyqxmd.com/read/29602834/nephrin-binding-ephrin-b1-at-the-slit-diaphragm-controls-podocyte-function-through-the-jnk-pathway
#14
Yoshiyasu Fukusumi, Ying Zhang, Ryohei Yamagishi, Kanako Oda, Toru Watanabe, Katsuyuki Matsui, Hiroshi Kawachi
Background B-type ephrins are membrane-bound proteins that maintain tissue function in several organs. We previously reported that ephrin-B1 is localized at the slit diaphragm of glomerular podocytes. However, the function of ephrin-B1 at this location is unclear. Methods We analyzed the phenotype of podocyte-specific ephrin-B1 knockout mice and assessed the molecular association of ephrin-B1 and nephrin, a key molecule of the slit diaphragm, in HEK293 cells and rats with anti-nephrin antibody-induced nephropathy...
March 30, 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29602395/the-role-of-peroxisome-proliferator-activated-receptor-%C3%AE-coactivator-1%C3%AE-pgc-1%C3%AE-in-kidney-disease
#15
REVIEW
Szu-Yuan Li, Katalin Susztak
Peroxisome proliferator-activated receptor γ coactivator 1α (PGC-1α) is a key transcriptional regulator of mitochondrial biogenesis and function. Several recent studies have evaluated the role of PGC-1α in various renal cell types in healthy and disease conditions. Renal tubule cells mostly depend on mitochondrial fatty acid oxidation for energy generation. A decrease in PGC-1α expression and fatty acid oxidation is commonly observed in patient samples and mouse models with acute and chronic kidney disease...
March 2018: Seminars in Nephrology
https://www.readbyqxmd.com/read/29600408/independent-regulation-of-renin-angiotensin-aldosterone-system-in-the-kidney
#16
REVIEW
Akira Nishiyama, Hiroyuki Kobori
Renin-angiotensin-aldosterone system (RAAS) plays important roles in regulating renal hemodynamics and functions, as well as in the pathophysiology of hypertension and renal disease. In the kidney, angiotensin II (Ang II) production is controlled by independent multiple mechanisms. Ang II is compartmentalized in the renal interstitial fluid with much higher concentrations than those existing in the circulation. Inappropriate activation of the intrarenal RAAS is an important contributor to the pathogenesis of hypertension and renal injury...
March 29, 2018: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/29594119/monogenic-causes-of-proteinuria-in-children
#17
REVIEW
Onur Cil, Farzana Perwad
Glomerular disease is a common cause for proteinuria and chronic kidney disease leading to end-stage renal disease requiring dialysis or kidney transplantation in children. Nephrotic syndrome in children is diagnosed by the presence of a triad of proteinuria, hypoalbuminemia, and edema. Minimal change disease is the most common histopathological finding in children and adolescents with nephrotic syndrome. Focal segmental sclerosis is also found in children and is the most common pathological finding in patients with monogenic causes of nephrotic syndrome...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29593530/mitochondrial-fission-is-required-for-angiotensin-ii-induced-cardiomyocyte-apoptosis-mediated-by-a-sirt1-p53-signaling-pathway
#18
Jia Qi, Feng Wang, Ping Yang, Xuelian Wang, Renjie Xu, Jihui Chen, Yanggang Yuan, Zhaoyang Lu, Junli Duan
Hypertension-induced cardiac apoptosis is a major contributor to early-stage heart-failure. Our previous studies have found that p53-mediated mitochondrial fission is involved in aldosterone-induced podocyte apoptosis. However, it is not clear that whether p53-induced mitochondrial fission is critical for hypertensive Angiotensin II (AngII)-induced cardiomyocyte apoptosis. In this study, we found that inhibition of the mitochondrial fission protein Drp1 (dynamin-related protein 1) by Mdivi-1 prevented cardiomyocyte apoptosis and cardiac remodeling in SHRs...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29590173/soluble-klotho-as-a-marker-of-renal-fibrosis-and-podocyte-injuries-in-human-kidneys
#19
Nam-Jun Cho, Dong-Jae Han, Ji-Hye Lee, Si-Hyong Jang, Jeong Suk Kang, Hyo-Wook Gil, Samel Park, Eun Young Lee
Klotho deficiency is relevant to renal fibrosis and podocyte injury in vivo and in vitro. We examined whether histological findings of renal biopsy specimens were associated with the levels of soluble klotho in humans. We investigated renal biopsy specimens of 67 patients and detailed microscopic findings were reviewed. Soluble serum/urinary klotho and urinary angiotensinogen were assessed by enzyme-linked immunosorbent assays, and tissue klotho expression was assessed by immunohistochemical staining. The median age of the study participants was 35...
2018: PloS One
https://www.readbyqxmd.com/read/29589596/coq10-loaded-liposomes-combined-with-utmd-prevented-early-nephropathy-of-diabetic-rats
#20
Pian-Pian Chen, He-Lin Xu, Ting-Yue, De-Li ZhuGe, Bing-Hui Jin, Qun-Yan Zhu, Bi-Xin Shen, Li-Fen Wang, Cui-Tao Lu, Ying-Zheng Zhao, Xiao-Kun Li
Nephropathy is one of the most severe complications of diabetic patients. The therapeutic strategies for diabetic patients should not only focus on the control of blood glucose but also pay attention to the occurrence of diabetic nephropathy (DN). Coenzyme Q10 (CoQ10) has great therapeutic potential for DN. However, the clinical application of CoQ10 has been limited because of its low water-solubility and non-specific distribution. Liposomes were supposed to be an effective way for delivering CoQ10 to kidney...
February 20, 2018: Oncotarget
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