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https://www.readbyqxmd.com/read/29351404/type-2-diabetes-impairs-the-ability-of-skeletal-muscle-pericytes-to-augment-postischemic-neovascularization-in-db-db-mice
#1
Katherine L Hayes, Louis M Messina, Lawrence M Schwartz, Jinglian Yan, Amy S Burnside, Sarah Witkowski
Peripheral artery disease is an atherosclerotic occlusive disease that causes limb ischemia and has few effective non-interventional treatments. Stem cell therapy is promising, but concomitant diabetes may limit its effectiveness. We evaluated the therapeutic potential of skeletal muscle pericytes to augment postischemic neovascularization in wild type and type 2 diabetic (T2DM) mice. Wild type C57BL/6J and leptin receptor spontaneous mutation db/db T2DM mice underwent unilateral femoral artery excision to induce limb ischemia...
January 10, 2018: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/29346132/enzymatic-sources-and-physio-pathological-functions-of-soluble-pro-renin-receptor
#2
Qing Zhu, Tianxin Yang
PURPOSE OF REVIEW: (Pro)renin receptor (PRR) belongs to type I transmembrane receptor family and binds both prorenin and renin, representing a potential regulator of the activity of the renin-angiotensin system. Soluble form of PRR (sPRR) is generated by intracellular protease-mediated cleavage of full-length PRR. The purpose of this review is to highlight recent advances in understanding the mechanisms of action and production of sPRR. RECENT FINDINGS: It has recently been demonstrated that site-1-protease (S1P) plays a dominant role in the generation of sPRR...
January 16, 2018: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/29344504/new-findings-on-the-pathogenesis-of-distal-renal-tubular-acidosis
#3
REVIEW
Francesco Trepiccione, Federica Prosperi, Luigi Regenburgh de la Motte, Christian A Hübner, Regine Chambrey, Dominique Eladari, Giovambattista Capasso
Background: Distal renal tubular acidosis (dRTA) is characterized by an impairment of the urinary acidification process in the distal nephron. Complete or incomplete metabolic acidosis coupled with inappropriately alkaline urine are the hallmarks of this condition. Genetic forms of dRTA are caused by loss of function mutations of either SLC4A1, encoding the AE1 anion exchanger, or ATP6V1B1 and ATP6V0A4, encoding for the B1 and a4 subunits of the vH+ATPase, respectively. These genes are crucial for the function of A-type intercalated cells (A-IC) of the distal nephron...
December 2017: Kidney Diseases
https://www.readbyqxmd.com/read/29341864/comparison-of-acute-kidney-injury-of-different-aetiology-reveals-in-common-mechanisms-of-tissue-damage
#4
Michael Hultström, Mediha Becirovic-Agic, Sofia Jönsson
Acute kidney injury (AKI) is a syndrome of reduced glomerular filtration rate (GFR) and urine production caused by a number of different diseases. It is associated with renal tissue damage. This tissue damage can cause tubular atrophy and interstitial fibrosis that leads to nephron loss and progression of chronic kidney disease (CKD). This review describes the in-common mechanisms behind tissue damage in AKI caused by different underlying diseases. Comparing six high-quality microarray studies of renal gene expression after AKI in disease models (gram-negative sepsis, gram-positive sepsis, ischemia-reperfusion, malignant hypertension, rhabdomyolysis and cisplatin toxicity) identified 5254 differentially expressed genes in at least one of the AKI models...
December 20, 2017: Physiological Genomics
https://www.readbyqxmd.com/read/29340323/clinical-and-pathological-significance-of-autoantibodies-to-erythropoietin-receptor-in-type-2-diabetic-patients-with-ckd
#5
Akinori Hara, Kengo Furuichi, Akihiko Koshino, Haruka Yasuda, Trang Thi Thu Tran, Yasunori Iwata, Norihiko Sakai, Miho Shimizu, Shuichi Kaneko, Hiroyuki Nakamura, Takashi Wada
Introduction: We examined the impact of autoantibodies on the erythropoietin receptor (EPOR) in type 2 diabetic patients with chronic kidney disease (CKD). Methods: A total of 112 Japanese patients with type 2 diabetes who had CKD were enrolled in this study and followed for a mean of 45 months. Sera from these patients were screened for anti-EPOR antibodies using enzyme-linked immunosorbent assays. Results: Anti-EPOR antibodies were detected in 26 patients (23%)...
January 2018: KI Reports
https://www.readbyqxmd.com/read/29339492/cytocapsular-tubes-conduct-cell-translocation
#6
Tingfang Yi, Gerhard Wagner
Cell locomotion is essential for multicellular organism embryo development, organ homeostasis, tissue regeneration, immune responses, and tumor metastasis. Here we report that single mammalian cells can generate two extracellular membranous compartments: cytocapsulae and cytocapsular tubes. Cells migrate in cytocapsulae and engender cytocapsular tubes, which exhibit pleiotropic biological functions and provide tubular routes for directed cell transportation. Ultrastructural analysis by electron microscope revealed that nanoprotrusions surround and anchor cytocapsular tubes in place...
January 16, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29336056/ilei-is-an-important-intermediate-participating-in-the-formation-of-tgf-%C3%AE-1-induced-renal-tubular-emt
#7
Xing Zhao, Gang Luo, Yan Fan, Xiaoxue Ma, Jieqing Zhou, Hong Jiang
Renal interstitial fibrosis is the most common process by which chronic kidney diseases progress to end-stage renal failure. Epithelial-to-mesenchymal transitions (EMTs) play a crucial role in the progression of renal interstitial fibrosis. A newly identified cytokine, interleukin-like EMT inducer (ILEI), has been linked to EMT in some diseases. However, the effects of ILEI on renal tubular EMT have not yet been well established. Here, we characterize the expression of ILEI in tubular EMT and describe the role and mechanism of ILEI in transforming growth factor beta 1 (TGF-β1)-induced renal tubular EMT...
January 15, 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29333842/an-adolescent-with-idiopathic-pleuroparenchymal-fibroelastosis-case-report
#8
Emine Atag, Nilay Bas Ikizoglu, Yasemin Gokdemir, Ela Erdem Eralp, Gursu Kiyan, Dilek Yilmazbayhan, Bulent Karadag
Idiopathic pleuroparenchymal fibroelastosis (IPPFE) is a rare disorder recently included in rare idiopathic interstitial pneumonias according to the updated American Thoracic Society/European Respiratory Society classification. IPPFE is characterized by pleural and subpleural parenchymal fibrosis causing volume loss predominantly in the upper lung lobes. Age of onset is variable, IPPFE mainly occurs in third and fourth decades. We present a 16 year old patient with a 2-year history of exertional dyspnea, nonproductive cough and weight loss...
February 1, 2018: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/29330844/bradykinin-mediates-the-association-of-collecting-duct-cells-to-form-migratory-colonies-through-b2-receptor-activation
#9
Edith Del Valle Guaytima, Yamila Romina Brandán, Nicolás Octavio Favale, Bruno Jaime Santacreu, Norma B Sterin-Speziale, María Gabriela Márquez
It is known that bradykinin (BK) B2 receptor (B2R) is expressed in the collecting duct (CD) cells of the newborn rat kidney, but little is known about its role during early postnatal life. Therefore, we hypothesize that BK could participate in the mechanisms that mediate CD formation during the postnatal renal development. Performing primary cultures, combined with biochemical, immunocytochemical, and time-lapse analysis, we studied the role of BK in CD cell behaviour isolated from renal papilla of neonatal rats...
January 13, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29330374/predicting-fibrosis-progression-in-renal-transplant-recipients-using-laser-based-infrared-spectroscopic-imaging
#10
Vishal K Varma, Andre Kajdacsy-Balla, Sanjeev Akkina, Suman Setty, Michael J Walsh
Renal transplants have not seen a significant improvement in their 10-year graft life. Chronic damage accumulation often leads to interstitial fibrosis and tubular atrophy (IF/TA) and thus graft function loss over time. For this reason, IF/TA has been the chief suspect for a potential prognostic marker for long term outcomes. In this study, we have used infrared spectroscopic (IR) imaging to interrogate the biochemistry of regions of fibrosis from renal transplant biopsies to identify a biochemical signature that can predict rapid progression of fibrosis...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29330063/risk-of-ischemic-kidney-injury-in-patients-with-nonarteritic-anterior-ischemic-optic-neuropathy-a-nationwide-population-based-study
#11
Ju-Yeun Lee, Kyung-Ah Park, Sei Yeul Oh
PURPOSE: To investigate the risk of acute tubular necrosis (ATN) in patients with nonarteritic anterior ischemic optic neuropathy (NAION). DESIGN: Population-based cohort study METHODS: This is a nationwide, population-based, retrospective study using data from the Korean national health claims database from 2011 through 2015. Patients with NAION and randomly selected control subjects from the entire Korean population were enrolled. A log rank analysis was used to evaluate a risk of ATN in the group of patients with NAION (study group) compared to an age-, sex-, and comorbidities-matched control group...
January 9, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29324683/pentoxifylline-and-methylprednisolone-additively-alleviate-kidney-failure-and-prolong-survival-of-rats-after-renal-warm-ischemia-reperfusion
#12
Grzegorz Wystrychowski, Wojciech Wystrychowski, Władysław Grzeszczak, Andrzej Więcek, Robert Król, Antoni Wystrychowski
Renal ischemia-reperfusion injury (IRI) induces local inflammation leading to kidney damage. Since pentoxifylline (PTX) and steroids have distinct immunomodulatory properties, we aimed to evaluate for the first time their combined use in IRI-induced acute kidney injury (AKI) and chronic kidney disease (CKD) in rats. In two experiments, PTX (100 mg/kg body weight subcutaneously) was administered 90 min prior to renal IRI or/and methylprednisolone (MP; 100 mg/kg body weight intramuscularly) was infused 60 min after reperfusion of a solitary kidney (AKI model: 45 min ischemia, 48 male Sprague-Dawley rats) or one kidney with excision of contralateral kidney 2 weeks later (CKD model: 90 min ischemia, 38 rats)...
January 11, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29322114/characteristics-of-special-type-breast-tumors-in-our-center
#13
Tonguç Utku Yılmaz, Levent Trabzonlu, Sertaç Ata Güler, Mehmet Ali Baran, Gökhan Pösteki, Cengiz Erçin, Zafer Utkan
Objective: Breast cancer is a heterogeneous disease with different histological types. Ductal breast cancer constitutes the vast majority of the breast cancers. However limited data are present in the rest of breast cancers called special or rare type breast cancers. Here in this study, we tried to describe the clinical features of special type breast cancers in our center. Materials and Methods: Retrospective descriptive study was performed in Kocaeli University School of Medicine, Department of General Surgery between January 2000 and January 2016...
January 2018: European Journal of Breast Health
https://www.readbyqxmd.com/read/29318214/urinary-calcium-excretion-and-risk-of%C3%A2-chronic-kidney-disease-in-the-general%C3%A2-population
#14
Jacob M Taylor, Lyanne M Kieneker, Martin H de Borst, Sipke T Visser, Ido P Kema, Stephan J L Bakker, Ron T Gansevoort
Introduction: High urinary calcium excretion (UCaE) has been shown to lead to accelerated renal function decline in individuals with renal tubular diseases. It is not known whether this association also exists in the general population. Therefore, we investigated whether high UCaE is associated with risk of developing chronic kidney disease (CKD) in community-dwelling subjects. Methods: Urine samples of 5491 subjects who were free of CKD at baseline and participated in the Prevention of Renal and Vascular End-Stage Disease study (a prospective, observational, general population-based cohort of Dutch men and women aged 28-75 years) were examined for UCaE...
May 2017: KI Reports
https://www.readbyqxmd.com/read/29314776/chronicity-index-especially-glomerular-sclerosis-is-the-most-powerful-predictor-of-renal-response-following-immunosuppressive-treatment-in-patients-with-lupus-nephritis
#15
Dong-Jin Park, Sung-Eun Choi, Haimuzi Xu, Ji-Hyoun Kang, Kyung-Eun Lee, Ji Shin Lee, Yoo-Duk Choi, Shin-Seok Lee
AIM: Renal responses to immunosuppressive agents in patients with lupus nephritis (LN) differ depending on ethnicity, follow-up duration, disease severity and treatment. Thus, we evaluated predictors of complete remission during the first year following immunosuppressive treatment in patients with LN. METHODS: We retrospectively reviewed 79 patients who underwent kidney biopsy prior to the start of induction treatment and who were subsequently treated with immunosuppressive drugs for at least 6 months and followed-up for more than a year...
January 5, 2018: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/29311258/molecular-mechanisms-of-cutis-laxa-and-distal-renal-tubular-acidosis-causing-mutations-in-v-atpase-a-subunits-atp6v0a2-and-atp6v0a4
#16
Sally Esmail, Norbert Kartner, Yeqi Yao, Joo Wan Kim, Reinhart A F Reithmeier, Morris F Manolson
The a subunit is the largest of 15 different subunits that make up the vacuolar H+-ATPase (V-ATPase) complex, where it functions in proton translocation. In mammals, this subunit has four paralogous isoforms, a1-a4, which may encode signals for targeting assembled V-ATPases to specific intracellular locations. Despite the functional importance of the a subunit, its structure remains controversial. By studying molecular mechanisms of human disease-causing missense mutations within a subunit isoforms, we may identify domains critical for V-ATPase targeting, activity and/or regulation...
January 8, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29310824/c3-glomerulonephritis-and-dense-deposit-disease-share-a-similar-disease-course-in-a-large-united-states-cohort-of-patients-with-c3-glomerulopathy
#17
Andrew S Bomback, Dominick Santoriello, Rupali S Avasare, Renu Regunathan-Shenk, Pietro A Canetta, Wooin Ahn, Jai Radhakrishnan, Maddalena Marasa, Paul E Rosenstiel, Leal C Herlitz, Glen S Markowitz, Vivette D D'Agati, Gerald B Appel
C3 glomerulonephritis (C3GN) and dense deposit disease comprise the two classes of C3 glomerulopathy. Studies from Europe and Asia have aided our understanding of this recently defined disorder, but whether these data apply to a diverse United States patient population remains unclear. We, therefore, reviewed clinical and histopathological data, including generation of a C3 Glomerulopathy Histologic Index to score biopsy activity and chronicity, to determine predictors of progression to end-stage renal disease (ESRD) and advanced chronic kidney disease (CKD) in 111 patients (approximately 35% non-white) with C3 glomerulopathy: 87 with C3GN and 24 with dense deposit disease...
January 6, 2018: Kidney International
https://www.readbyqxmd.com/read/29305327/renal-tubular-damage-caused-by-cylindrospermopsin-cyanotoxin-in-mice
#18
A C N Moraes, V F Magalhães
Cylindrospermopsin (CYN) is a cyanotoxin and a hydrophilic alkaloid of 415 Da. The principal effect of CYN is the inhibition of protein synthesis, and it can damage various organs. Studies have demonstrated that the kidney is the most affected organ. CYN has played roles in at least two poisoning cases, i.e., the mysterious Palm Island disease in Australia and the event at Caruaru in Brazil. Therefore, we aimed to determine how CYN disrupts the renal tissue. Dose-response curves following single intraperitoneal injections of purified CYN (at 0, 16, 32, 64 and 128 μg CYN/kg body weight) were created in 10-week-old male BALB/C mice (n = 4)...
January 2, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29305119/weicao-capsule-ameliorates-renal-injury-through-increasing-autophagy-and-nlrp3-degradation-in-uan-rats
#19
Jiacai Hu, Hao Wu, Daochun Wang, Zhijie Yang, Lihua Zhuang, Na Yang, Junjun Dong
Uric acid nephropathy (UAN) is one of the most common metabolic diseases and leads to kidney damage. This study aimed to evaluate the effect of Weicao capsule on renal injury of UAN rats and to examine whether the mechanism was associated with induction of autophagy and degradation of nucleotide binding oligomerization domain (Nod)-like receptor (NLR) protein 3 (NLRP3) inflammasome. Sixty Sprague-Dawley rats were randomly allocated into 6 groups: Control, Model, Allopurinol, and Weicao (0.55/1.1/2.2 g/kg) group...
January 2, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29303013/inhibition-of-plasma-kallikrein-kinin-system-to-alleviate-renal-injury-and-arthritis-symptoms-in-rats-with-adjuvant-induced-arthritis
#20
Jie Zhu, Hui Wang, Jingyu Chen, Wei Wei
BACKGROUND: Rheumatoid arthritis (RA) is a chronic systemic autoimmune disease. Impairment of kidney functions in RA was observed. However, the mechanism of kidney injury of RA has not been clear. Plasma kallikrein-kinin system (KKS) was involved in inflammatory processes in kidney disease. AIM: This study aimed to explore the role of plasma KKS in immune reactions and kidney injury of RA. RESULTS: The paw of AA rats appeared to be swelling and redness, the arthritis index was significantly increased on the 18, 21 and 24 d after injection and secondary inflammation in multi-sites was observed...
January 5, 2018: Immunopharmacology and Immunotoxicology
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