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Ureteral injury

Futoshi Matsui, Stephen Babitz, Audrey Rhee, Karen L Hile, Hongji Zhang, Kirstan Kathleen Meldrum
STAT3 is a transcription factor implicated in renal fibrotic injury, but the role of STAT3 in mesenchymal stem cell (MSC)-induced renoprotection during renal fibrosis remains unknown. We hypothesized that MSCs protect against obstruction-induced renal fibrosis by downregulating STAT3 activation and STAT3-induced matrix metalloproteinase 9 (MMP-9) expression. Male Sprague-Dawley rats underwent renal arterial injection of vehicle or MSCs (1 x 106 per rat) immediately prior to sham operation or induction of unilateral ureteral obstruction (UUO)...
October 19, 2016: American Journal of Physiology. Renal Physiology
Erfan Amini, Farhad Pishgar, Asal Hojjat, Mohammad Soleimani, Majid Ali Asgari, Abdol-Mohammad Kajbafzadeh
This study was designed to evaluate the role of urinary and serum carbohydrate antigen 19-9 (CA19-9) as a biomarker in the assessment of patients with ureteral stone. A total of 38 patients with ureteral stone and hydronephrosis who underwent transurethral lithotripsy (TUL) (Group A) and 24 age-matched healthy controls (Group B) were evaluated in this study. Urinary and serum CA19-9 concentrations were measured in group A patients before TUL as well as 4 and 8 weeks following the operation. Urinary and serum CA19-9 concentrations were also measured in group B participants...
October 18, 2016: Renal Failure
Hendt P Versteegh, Navroop S Johal, Ivo de Blaauw, Michael P Stanton
PURPOSE: There is a paucity of recent evidence regarding long-term urological and sexual outcomes following surgery for Hirschsprung disease (HD). We aimed to undertake a systematic review of all HD literature to define these outcomes. MATERIALS AND METHODS: A systematic literature search was conducted on studies from 1966 to 2014. Relevant articles were assessed for urological/sexual operative complications and functional sequelae. Studies were analysed in qualitative (Rangel score) and quantitative syntheses...
September 30, 2016: Journal of Pediatric Urology
Chongxiang Xiong, Monica V Masucci, Xiaoxu Zhou, Na Liu, Xiujuan Zang, Evelyn Tolbert, Ting C Zhao, Shougang Zhuang
Bromodomain and extra-terminal (BET) protein inhibitors have been shown to effectively inhibit tumorgenesis and ameliorate pulmonary fibrosis by targeting bromodomain proteins that bind acetylated chromatin markers. However, their pharmacological effects in renal fibrosis remain unclear. In this study, we examined the effect of I-BET151, a selective and potent BET inhibitor, on renal fibroblast activation and renal fibrosis. In cultured renal interstitial fibroblasts, exposure of cells to I-BET151, or silencing of bromodoma in-containing protein 4 (Brd4), a key BET protein isoform, significantly reduced their activation as indicated by decreased expression of α-smooth muscle actin, collagen 1 and fibronectin...
October 6, 2016: Oncotarget
Jin Zhang, Linfeng Zheng, Xiangning Yuan, Chunyan Liu, Qiongjing Yuan, Feifei Xie, Sisi Qiu, Zhangzhe Peng, Yiting Tang, Jie Meng, Jiao Qin, Gaoyun Hu, Lijian Tao
Mefunidone is a new pyridone agent that attenuates renal tubulointerstitial fibrosis. However, the signaling pathways involved in the effect of mefunidone on renal tubulointerstitial fibrosis have not been well explained. Inflammatory response initiates and promotes renal tubulointerstitial fibrosis, and the inhibitor of nuclear factor kappa-B kinase beta (IKKβ) is a master regulator of inflammation. This study is determined to clarify the influence of mefunidone on renal inflammation and the phosphorylation of IKKβ...
October 8, 2016: International Journal of Biochemistry & Cell Biology
Qin Zhang, Shasha Yin, Lin Liu, Zhihong Liu, Wangsen Cao
Renal fibrosis is the hallmark of chronic kidney diseases (CKD) and its development and progression are significantly affected by epigenetic modifications. Rhein, a plant-derived anthraquinone, displays strong anti-fibrosis properties, but its protective mode of action remains incompletely understood. Here we explore the mechanism of Rhein anti-renal fibrosis by investigating its regulation of Klotho, a known renal anti-fibrotic protein whose suppression after renal injury reportedly involves aberrant DNA methylation...
October 5, 2016: Scientific Reports
John A D'Elia, George Bayliss, Ray E Gleason, Larry A Weinrauch
Since angiotensin increases the expression of plasminogen activator inhibitor (PAI), mechanisms associated with an actively functioning renin-angiotensin-aldosterone system can be expected to be associated with increased PAI-1 expression. These mechanisms are present not only in common conditions resulting in glomerulosclerosis associated with aging, diabetes or genetic mutations, but also in autoimmune disease (like scleroderma and lupus), radiation injury, cyclosporine toxicity, allograft nephropathy and ureteral obstruction...
October 2016: Clinical Kidney Journal
P H Trivedi, A C Gandhi, N A Parekh
No abstract text is available yet for this article.
November 2015: Journal of Minimally Invasive Gynecology
A M Sadecky, S M Mansuria, Ttm Lee
No abstract text is available yet for this article.
November 2015: Journal of Minimally Invasive Gynecology
Janka Bábíčková, Barbara M Klinkhammer, Eva M Buhl, Sonja Djudjaj, Mareike Hoss, Felix Heymann, Frank Tacke, Jürgen Floege, Jan U Becker, Peter Boor
Progressive renal diseases are associated with rarefaction of peritubular capillaries, but the ultrastructural and functional alterations of the microvasculature are not well described. To study this, we analyzed different time points during progressive kidney damage and fibrosis in 3 murine models of different disease etiologies. These models were unilateral ureteral obstruction, unilateral ischemia-reperfusion injury, and Col4a3-deficient mice, we analyzed ultrastructural alterations in patient biopsy specimens...
September 24, 2016: Kidney International
Liangsheng Lu, Yunli Bi, Xiang Wang, Shuangsui Ruan
PURPOSE: Midureteral obstruction is an extremely rare condition. This retrospective study assessed the outcomes of laparoscopic ureteroureterostomy (UU) in 13 children with midureteral obstructions. METHODS: Records of patients with midureteral obstruction who underwent laparoscopic end-to-end UU between July 2011 and August 2015 were reviewed. The medical records comprised patient demographic data, intraoperative details, postoperative outcomes, and related complications...
September 26, 2016: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
Francesca Saccon, Mariele Gatto, Anna Ghirardello, Luca Iaccarino, Leonardo Punzi, Andrea Doria
Galectins are evolutionary conserved β-galactoside binding proteins with a carbohydrate-recognition domain (CRD) of approximately 130 amino acids. In mammals, 15 members of the galectin family have been identified and classified into three subtypes according to CRD organization: prototype, tandem repeat-type and chimera-type galectins. Galectin-3 (gal-3) is the only chimera type galectin in vertebrates containing one CRD linked to an unusual long N-terminal domain which displays non-lectin dependent activities...
September 23, 2016: Autoimmunity Reviews
N Gabunia, Iv Rodionov, T Chigogidze
Congenital renal malformations are the most common congenital malformations in humans, the most common being horseshoe kidney with joined lower poles present in up to 0.25% of general population. To the contrary renal fusions with ectopia are amongst the rare malformations affecting 1 in 2000 examined cadavers. Males are affected slightly more often then females (3:2), left to right crosses being more frequent. The value of early diagnosis of asymptomatic renal malformation is uncertain, except when other abnormalities might point to them and they can affect the clinical management strategy (severe ear deformity with facial malformation, gynecological abnormalities)...
July 2016: Georgian Medical News
Nathan P Rudemiller, Mehul B Patel, Jian-Dong Zhang, Alexander D Jeffs, Norah S Karlovich, Robert Griffiths, Matthew J Kan, Anne F Buckley, Michael D Gunn, Steven D Crowley
Inappropriate activation of the renin angiotensin system (RAS) is a key contributor to the pathogenesis of essential hypertension. During RAS activation, infiltration of immune cells into the kidney exacerbates hypertension and renal injury. However, the mechanisms underpinning the accumulation of mononuclear cells in the kidney after RAS stimulation remain unclear. C-C motif chemokine 5 (CCL5) drives recruitment of macrophages and T lymphocytes into injured tissues, and we have found that RAS activation induces CCL5 expression in the kidney during the pathogenesis of hypertension and renal fibrosis...
September 15, 2016: American Journal of Pathology
Stephen Odunayo Ikuerowo, Alaba Fredrick Doherty, Muftau Jimoh Bioku, Abimbola Ayodeji Abolarinwa, Adekunle Azeez Adebayo, Steves Olaide Oyeleke, Olufunmilade Akinfolarin Omisanjo
BACKGROUND: Prostate cancer is the most commonly diagnosed cancer in men in Nigeria and most cases present when the disease is already in an advanced stage. Radical prostatectomy for early prostate cancer is therefore not a commonly performed operation by urologists in Nigeria. We have had training and significant experience in radical retropubic prostatectomy. We, therefore, report the outcome of our initial experience. MATERIALS AND METHODS: We review the record of men with early prostate cancer who had radical retropubic prostatectomy in our institution from 2007 to 2015...
July 2016: Nigerian Medical Journal: Journal of the Nigeria Medical Association
Sara Nasser, Jumana Almuheimid, Helmut Plett, Jalid Sehouli, Mustafa Zelal Muallem
AIM: In this study we aimed to analyze the safety and feasibility of total mesometrial resection (TMMR) using the laparoscopic approach. PATIENTS AND METHODS: Laparoscopic TMMR and pelvic lymphadenectomy (LNE) was carried out in 34 patients with cervical cancer FIGO IA-IIB from April 2012-April 2016 at our tertiary center. Para-aortic LNE was performed when indicated. The main outcomes included surgical margins, a number of retrieved lymph node, intra- and post-operative complications, and recurrence rates...
September 2016: Anticancer Research
Kazuaki Nishimura, Kazuaki Yoshimura, Kaori Hoshino, Toru Hachisuga
INTRODUCTION AND HYPOTHESIS: Transvaginal ipsilateral uterosacral ligament colpopexy for pelvic organ prolapse (POP), which was reported by Shull et al. (Shull's colpopexy) in 2000, is one of the most frequently performed non-mesh pelvic floor reconstructive surgical procedures. Despite its excellent anatomical outcomes, ureteral injury and difficulty in uterosacral ligament detection (especially in patients with severe POP) are typical issues with this procedure. METHOD: This video demonstrates the procedure in a 58-year-old woman, gravida 2 para 2, with POP-Q stage II uterine prolapse and stage I cystocele...
September 10, 2016: International Urogynecology Journal
Haiyan Fu, Yuan Tian, Lili Zhou, Dong Zhou, Roderick J Tan, Donna B Stolz, Youhua Liu
Kidney fibrosis initiates at certain focal sites in which the fibrogenic niche provides a specialized microenvironment that facilitates fibroblast activation and proliferation. However, the molecular identity of these fibrogenic niches is poorly characterized. Here, we determined whether tenascin-C (TNC), an extracellular matrix glycoprotein, is a component of the fibrogenic niche in kidney fibrosis. In vivo, TNC expression increased rapidly in kidneys subjected to unilateral ureteral obstruction or ischemia/reperfusion injury and predominantly localized at the foci rich in fibroblasts in renal interstitium...
September 9, 2016: Journal of the American Society of Nephrology: JASN
Subramanian Vaidyanathan, Azi Samsudin, Gurpreet Singh, Peter L Hughes, Bakul M Soni, Fahed Selmi
INTRODUCTION: Paraplegic patients are at greater risk of developing complications following ureteroscopic lithotripsy because of urine infection associated with neuropathic bladder, difficulties in access due to altered anatomy of urinary bladder and urethra, spinal curvature, spasticity, and contractures. We report the occurrence of large subcapsular hematoma following ureteroscopy and discuss lessons we learn from this case. CASE REPORT: A 48-year-old male patient with spina bifida underwent ureteroscopy with laser lithotripsy and ureteric stenting for left ureteric stone and staghorn calculus with hydronephrosis; laser lithotripsy was repeated after 3 months; both procedures were performed by a senior urologist and did not result in any complications...
2016: International Medical Case Reports Journal
Jialin Wang, Lydia Gibbert, Sonja Djudjaj, Christina Alidousty, Thomas Rauen, Uta Kunter, Andreas Rembiak, Dieter Enders, Vera Jankowski, Gerald S Braun, Jürgen Floege, Tammo Ostendorf, Ute Raffetseder
Virtually all chronic kidney diseases progress towards tubulointerstitial fibrosis. In vitro, Y-box protein-1 (YB-1) acts as a central regulator of gene transcription and translation of several fibrosis-related genes. However, it remains to be determined whether its pro- or antifibrotic propensities prevail in disease. Therefore, we investigated the outcome of mice with half-maximal YB-1 expression in a model of renal fibrosis induced by unilateral ureteral obstruction. Yb1(+/-) animals displayed markedly reduced tubular injury, immune cell infiltration and renal fibrosis following ureteral obstruction...
August 30, 2016: Kidney International
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