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Ureteral injury

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https://www.readbyqxmd.com/read/28075469/urinary-kidney-injury-molecule%C3%A2-1-as-an-early-diagnostic-biomarker-of-obstructive-acute-kidney-injury-and-development-of-a-rapid-detection-method
#1
Yingli Jin, Xiaona Shao, Bo Sun, Chunsheng Miao, Zhengqiang Li, Yan Shi
The aim of the present study was to investigate whether urinary kidney injury molecule‑1 (KIM‑1) presents a suitable early diagnostic biomarker of obstructive nephropathy‑induced acute kidney injury (AKI), and to develop a rapid detection method for urinary KIM‑1. Obstructive AKI was induced in an experimental rat model by a unilateral ureteral obstruction (UUO) operation. Macro‑ and micromorphological kidney alterations were determined by visual observation and hematoxylin and eosin (HE) staining, respectively...
January 5, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28075040/n-acetyl-seryl-aspartyl-lysyl-proline-mediates-the-anti-fibrotic-properties-of-captopril-in-unilateral-ureteric-obstructed-balb-c-mice
#2
Gary Cw Chan, Hao Jia Wu, Kam Wa Chan, Stella Yiu, Ailis Zou, Xiao Ru Huang, Hui Yao Lan, Kar Neng Lai, Sydney Cw Tang
BACKGROUND: Angiotensin-converting enzyme inhibitors (ACEi) are widely employed to deter the progression of chronic kidney disease (CKD). Besides controlling hypertension and reduction of intra-glomerular pressure, ACEi appear to have anti-fibrotic effects in the renal cortex. N-acetyl-seryl-aspartyl-lysyl-proline (Ac-SDKP), an endogenous tetrapeptide that is degraded by ACE, has also been shown to ameliorate the pro-fibrotic phenotype displayed in CKD in our recent study. Whether the anti-fibrotic properties of ACEi are mediated by Ac-SDKP has not been fully investigated...
January 11, 2017: Nephrology
https://www.readbyqxmd.com/read/28070723/anorectal-malformations-definitive-surgery-during-adulthood
#3
M P J Lopez, V I Encila, S G Alamo, H J Monroy Iii, M F T Roxas
BACKGROUND: Anorectal malformations (ARMs) are rarely seen in adults, since majority of cases are corrected in infancy or childhood. The aim of this study was to describe the profile of patients who underwent definitive surgery to correct their ARM in adulthood, and to discuss the outcomes of surgery (morbidity, mortality, and function). METHODS: This retrospective study included patients 18 years old and above, managed surgically by the Division of Colorectal Surgery at the Philippine General Hospital, University of the Philippines, Manila, from January 1, 2004, to December 31, 2012...
January 9, 2017: Techniques in Coloproctology
https://www.readbyqxmd.com/read/28056942/the-guidewire-coil-technique-to-prevent-retrograde-stone-migration-of-ureteric-calculi-during-intracorporeal-lithothripsy
#4
Nici Markus Dreger, Friedrich Carl von Rundstedt, Stephan Roth, Alexander Sascha Brandt, Stephan Degener
BACKGROUND: Stone retropulsion represents a challenge for intracorporeal lithotripsy of ureteral calculi. The consequences are an increased duration and cost of surgery as well as decreased stone-free rates. The use of additional tools to prevent proximal stone migration entails further costs and risks for ureteral injuries. We present the simple technique of using a coil of the routinely used guidewire to prevent stone retropulsion. METHODS: We retrospectively evaluated all patients with mid-to-proximal ureteral stones in 2014, which were treated by ureteroscopic lithotripsy (Ho: YAG and/or pneumatic lithotripsy)...
January 5, 2017: BMC Urology
https://www.readbyqxmd.com/read/28043890/integrin-alpha6-maintains-the-structural-integrity-of-the-kidney-collecting-system
#5
Olga M Viquez, Eugenia M Yazlovitskaya, Tianxing Tu, Glenda Mernaugh, Pablo Secades, Karen K McKee, Vito Quaranta, Peter Yurchenco, Leslie C Gewin, Arnoud Sonnenberg, Ambra Pozzi, Roy Zent
Laminins are a major constituent of the basement membranes of the kidney collecting system. Integrins, transmembrane receptors formed by non-covalently bound α and β subunits, serve as laminin receptors, but their role in development and homeostasis of the kidney collecting system are poorly defined. Integrin α3β1, one of the major laminin receptors, plays a minor role in kidney collecting system development, while the role of α6 containing integrins (α6β1 and α6β4), the other major laminin receptors, is unknown...
December 30, 2016: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28024198/an-evaluation-of-laparoscopic-hysterectomy-alone-versus-in-combination-with-laparoscopic-myomectomy-for-patients-with-uterine-fibroids
#6
Fumiaki Taniguchi, Natsuki Koike, Tadayuki Kikukawa, Maki Yabuta, Masami Yamaguchi, Emi Adachi, Takeo Nakayama
OBJECTIVE: The purpose of this study was to compare surgical outcomes following conventional laparoscopic hysterectomy (LH) (C-LH) versus the combination method of LH plus laparoscopic myomectomy (LM) (LH+LM) for the treatment of large uterine fibroids. STUDY DESIGN: This study was performed in 56 patients (uterine weights ≥500g) who underwent either C-LH or LH+LM performed by the same surgeon between May 2010 and May 2016. LH+LM was performed when C-LH was problematic because of poor visibility and/or mobility due to uterine fibroids...
December 6, 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28017324/the-pattern-recognition-receptor-mincle-is-essential-for-maintaining-the-m1-macrophage-phenotype-in-acute-renal-inflammation
#7
Lin L Lv, Patrick Ming-Kuen Tang, Chun J Li, Yong K You, Jinhong Li, Xiao-Ru Huang, Jun Ni, Min Feng, Bi C Liu, Hui-Yao Lan
Mincle (macrophage-inducible C-type lectin, Clec4e) is a transmembrane pattern recognition receptor involving the innate immunity, but its role in kidney disease is still unexplored. In the obstructed kidney of the unilateral ureteral obstruction model of renal injury, Mincle was specifically detected in the infiltrating M1 macrophages (CD68(+)iNOS(+) cells) on day one but was rapidly reduced following reduction of M1 macrophages during the progression of kidney injury. Interestingly, Mincle-expressing macrophages were progressively increased in the cisplatin-induced acute kidney injury model, where iNOS expression was detected in the CD68(+) cells following Mincle induction...
December 22, 2016: Kidney International
https://www.readbyqxmd.com/read/28012556/-crossed-renal-ectopia-in-a-patient-with-a-complicated-sigma-neoplasia
#8
Luis Eduardo Pérez-Sánchez, Mauricio Burneo-Esteves, Adriá Rosat-Rodrigo, Caleb Baz-Figueroa, Antonio Dámaso Pérez-Álvarez, Manuel Ángel Barrera-Gómez
BACKGROUND: Crossed renal ectopia is a rare pathology that is often asymptomatic. Intraoperative detection with a sigma complicated neoplasia is more infrequent and requires correct management to avoid a renal ureteral injury. AIM: To present a case report of a patient with a sigma complicated neoplasia and a crossed renal ectopia detected incidentally. CASE REPORT: We present the case of a 62-year-old man that was submitted for emergency surgery for a sigma perforated neoplasm, and who presented with a previously undiagnosed left-side CRE...
December 21, 2016: Cirugia y Cirujanos
https://www.readbyqxmd.com/read/28011273/obstructive-nephropathy-without-hydronephrosis-suspicion-is-the-key
#9
Don H Esprit, Abhilash Koratala, Volodymyr Chornyy, Charles Wingo
Urinary tract obstruction leading to acute kidney injury is usually associated with bilateral hydroureters and hydronephrosis, often accompanied by oliguria. We present an atypical case of obstructive uropathy without these features that presented with severe acute kidney injury. A 64-year-old male with no known past medical history has presented with a 2-week history of nausea, decreased appetite, flank pain, lower extremity edema and was found to have elevated creatinine of 10.5 mg/dL. Renal ultrasound showed mild prominence of the bilateral renal collecting systems with no evidence of hydronephrosis...
December 20, 2016: Urology
https://www.readbyqxmd.com/read/28005154/-pathogenesis-of-urological-complications-after-radiation-therapy
#10
Y Tolkach, G Kristiansen
Radiation therapy is a treatment modality that is often used in the uro-oncological setting. The common indication for the radiation therapy in the urological sphere is prostate cancer, whether it is used primarily as a radical approach, or postoperatively as adjuvant or salvage therapy. All urological organs are sensitive to radiation injury with the urinary bladder being the most susceptible with a typical cascade including acute and late changes, arising in the dose-dependent manner. The common indication for radiation therapy in urology is prostate cancer, which collaterally affects the urinary bladder and rarely urethra (especially the bulbo-membranous urethra)...
December 22, 2016: Der Urologe. Ausg. A
https://www.readbyqxmd.com/read/27984749/laparoscopic-management-of-ureteral-endometriosis-a-systematic-review
#11
REVIEW
J Cavaco-Gomes, M Martinho, J Gilabert-Aguilar, J Gilabert-Estélles
The optimal management of ureteral endometriosis (UE) is not yet well defined. The choice on surgical approach and type of procedure has been based both on surgeons' experience and the location and depth of the lesion. The aim of this study was to review evidence about laparoscopic management of ureteral endometriosis, including preoperative evaluation, surgical details and postoperative follow-up. PubMed Central and SCOPUS databases were searched to identify studies reporting cases of laparoscopically managed ureteral endometriosis and including data regarding preoperative findings, surgical interventions and postoperative follow-up...
December 12, 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/27979597/inhibition-of-trpc6-channels-ameliorates-renal%C3%A2-fibrosis-and-contributes-to-renal-protection%C3%A2-by%C3%A2-soluble-klotho
#12
Yueh-Lin Wu, Jian Xie, Sung-Wan An, Noelynn Oliver, Nestor X Barrezueta, Mei-Hsiang Lin, Lutz Birnbaumer, Chou-Long Huang
Fibrosis is an exaggerated form of tissue repair that occurs with serious damage or repetitive injury and ultimately leads to organ failure due to the excessive scarring. Increased calcium ion entry through the TRPC6 channel has been associated with the pathogenesis of heart and glomerular diseases, but its role in renal interstitial fibrosis is unknown. We studied this by deletion of Trpc6 in mice and found it decreased unilateral ureteral obstruction-induced interstitial fibrosis and blunted increased mRNA expression of fibrosis-related genes in the ureteral obstructed kidney relative to that in the kidney of wild-type mice...
December 12, 2016: Kidney International
https://www.readbyqxmd.com/read/27958620/evolution-in-the-approach-to-overlooked-ureteral-injuries-after-gynecological-surgery
#13
Tomasz Borkowski, Janusz Judycki, Andrzej Borkowski, Maciej Czaplicki, Piotr Radziszewski
OBJECTIVES: To analyzed the therapeutic results for patients with overlooked iatrogenic ureteral injuries after gynecological surgery, treated at the department since 1990. Before the era of endourology, ureteral injuries were operated on immediately after making a diagnosis. This approach was changed after the popularization of percutaneous nephrostomy (PN) and ureteral stenting using a JJ stent. MATERIAL AND METHODS: 27 patients who were diagnosed with a ureteral injury between the first and sixty-fourth day after injury were included...
2016: Ginekologia Polska
https://www.readbyqxmd.com/read/27927780/genomic-analysis-of-kidney-allograft-injury-identifies-hematopoietic-cell-kinase-as-a-key-driver-of-renal-fibrosis
#14
Chengguo Wei, Li Li, Madhav C Menon, Weijia Zhang, Jia Fu, Brian Kidd, Karen L Keung, Christopher Woytovich, Ilana Greene, Wenzhen Xiao, Fadi Salem, Zhengzi Yi, John Cijiang He, Joel T Dudley, Barbara Murphy
Renal fibrosis is the common pathway of progression for patients with CKD and chronic renal allograft injury (CAI), but the underlying mechanisms remain obscure. We performed a meta-analysis in human kidney biopsy specimens with CAI, incorporating data available publicly and from our Genomics of Chronic Renal Allograft Rejection study. We identified an Src family tyrosine kinase, hematopoietic cell kinase (Hck), as upregulated in allografts in CAI. Querying the Kinase Inhibitor Resource database revealed that dasatinib, a Food and Drug Administration-approved drug, potently binds Hck with high selectivity...
December 7, 2016: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/27920988/ureteric-obstruction-caused-by-a-migrated-intrauterine-device
#15
Xuesong Yang, Xi Duan, Tao Wu
We present an extremely rare case of ureteric obstruction caused by a migrated intrauterine device. A 36-year-old female with complaints of almost 10 months left flank pain presented to our hospital. She used an IUD for contraception for 6 months after the birth of her first child. The IUD was not visible then. Ultrasonography (US) revealed that left severe hydronephrosis and upper ureterectasis. Pelvic computed tomography (CT) found that IUD was located very close to the lower ureter which was adjacent to the third anatomize physiological narrow...
January 2017: Urology Case Reports
https://www.readbyqxmd.com/read/27915093/discoidin-domain-receptor-1-kinase-activity-is-required-for-regulating-collagen-iv-synthesis
#16
Corina M Borza, Yan Su, Truc-Linh Tran, Ling Yu, Nick Steyns, Kayla J Temple, Marcin J Skwark, Jens Meiler, Craig W Lindsley, Brennan R Hicks, Birgit Leitinger, Roy Zent, Ambra Pozzi
Discoidin domain receptor 1 (DDR1) is a receptor tyrosine kinase that binds to and is activated by collagens. DDR1 expression increases following kidney injury and accumulating evidence suggests that it contributes to the progression of injury. To this end, deletion of DDR1 is beneficial in ameliorating kidney injury induced by angiotensin infusion, unilateral ureteral obstruction, or nephrotoxic nephritis. Most of the beneficial effects observed in the DDR1-null mice are attributed to reduced inflammatory cell infiltration to the site of injury, suggesting that DDR1 plays a pro-inflammatory effect...
December 1, 2016: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/27914705/pigment-epithelium-derived-factor-a-noninhibitory-serine-protease-inhibitor-is-renoprotective-by-inhibiting-the-wnt-pathway
#17
Xuemin He, Rui Cheng, Kyoungmin Park, Siribhinya Benyajati, Gennadiy Moiseyev, Chengyi Sun, Lorin E Olson, Yanhui Yang, Bonnie K Eby, Kai Lau, Jian-Xing Ma
Pigment epithelium-derived factor (PEDF) expression is downregulated in the kidneys of diabetic rats, and delivery of PEDF suppressed renal fibrotic factors in these animals. PEDF has multiple functions including anti-angiogenic, anti-inflammatory and antifibrotic activities. Since the mechanism underlying its antifibrotic effect remains unclear, we studied this in several murine models of renal disease. Renal PEDF levels were significantly reduced in genetic models of type 1 and type 2 diabetes (Akita and db/db, respectively), negatively correlating with Wnt signaling activity in the kidneys...
November 30, 2016: Kidney International
https://www.readbyqxmd.com/read/27913661/effects-of-exendin-4-on-the-intrarenal-renin-angiotensin-system-and-interstitial-fibrosis-in-unilateral-ureteral-obstruction-mice-exendin-4-and-unilateral-ureteral-obstruction
#18
Ying Le, Zongji Zheng, Junyu Xue, Mengling Cheng, Meiping Guan, Yaoming Xue
OBJECTIVE: The objective of this article is to investigate the renoprotecive effects of exendin-4 in a mouse model of unilateral ureteral obstruction (UUO) and explore the putative mechanisms. METHODS: Male Balbc mice underwent sham operation or UUO surgery, and then received intraperitoneal injection of vehicle or exendin-4, respectively. After 14 days, mice were sacrificed and the left kidneys were collected and analyzed by histology, immunohistochemistry, Western blot, quantitative real-time reverse transcription polymerase chain reaction, radioimmunoassay and enzyme-linked immunosorbent assay...
October 2016: Journal of the Renin-angiotensin-aldosterone System: JRAAS
https://www.readbyqxmd.com/read/27904653/inadvertent-ureteric-placement-and-successful-readjustment-of-a-urodynamic-catheter-via-fluoroscopy-in-a-spinal-injury-patient
#19
Michael S Floyd, Helen Russell, Jenny Goodman, Chalil P Vinod, Melissa C Davies
No abstract text is available yet for this article.
December 2016: Therapeutic Advances in Urology
https://www.readbyqxmd.com/read/27884883/bilateral-ureteric-obstruction-during-in-vitro-fertilisation-therapy-in-a-patient-with-complex-surgically-managed-crohn-s-disease
#20
Christopher Charles Khoo, Nikhil Ahluwalia, Jan Grace, Arun Sahai
A 37-year-old woman receiving in vitro fertilisation (IVF) treatment presented with lethargy, fevers and anuria. Her background included complex surgically managed Crohn's disease and mild right-sided hydronephrosis (with no evidence of obstruction on MAG3 renogram). On examination, she had a distended abdomen with generalised tenderness. Blood tests revealed an acute kidney injury and confirmed sepsis. She was found to have bilateral ureteric obstruction with worsening of the right-sided hydronephrosis and new-onset left-sided hydronephrosis secondary to bilateral ovarian masses, diagnosed as mild ovarian hyperstimulation syndrome (OHSS)...
November 24, 2016: BMJ Case Reports
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