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https://www.readbyqxmd.com/read/28418921/c-ebp-%C3%AE-positively-regulates-mdsc-expansion-and-endothelial-vegfr2-expression-in-tumor-development
#1
Yongfen Min, Jingdong Li, Peng Qu, P Charles Lin
Vascular endothelial cells and Gr-1+CD11b+ myeloid derived suppressor cells (MDSCs) are two important components that constitute the tumor microenvironment. Targeting these cells offers the potential to halt tumor growth. In this study, we report a common mediator in C/EBP-δ that regulates both components and aids in tumor development. C/EBP-δ is elevated in tumor derived MDSCs. Interestingly, genetic deletion of C/EBP-δ in mice significantly impaired MDSC expansion in response to tumor progression, but it had no effect on Gr-1+CD11b+ cell production in normal development...
March 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28418357/-renal-morphological-changes-in-experimental-oxalate-nephrolithiasis
#2
Yu G Motin, A V Lepilov, P M Larionov
AIM: Тo evaluate renal morphological changes in the early stages of lithogenic processes and during urinary correction of urine with oxalate-chelating compounds (sodium citrate). MATERIAL AND METHODS: An experimental model of oxalate nephrolithiasis was performed on 80 male Wistar rats weighing 180 to 250 g. Rat kidneys were morphologically and ultrastructurally studied. Immunohistochemical techniques were applied to study the features of development of endoplasmic reticulum stress...
2017: Arkhiv Patologii
https://www.readbyqxmd.com/read/28416732/prevalence-of-kidney-stones-and-associated-risk-factors-in-the-shunyi-district-of-beijing
#3
Y G Jiang, L H He, G T Luo, X D Zhang
INTRODUCTION: Kidney stone formation is a multifactorial condition that involves interaction of environmental and genetic factors. Presence of kidney stones is strongly related to other diseases, which may result in a heavy economic and social burden. Clinical data on the prevalence and influencing factors in kidney stone disease in the north of China are scarce. In this study, we explored the prevalence of kidney stone and potentially associated risk factors in the Shunyi District of Beijing, China...
April 18, 2017: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
https://www.readbyqxmd.com/read/28410252/molecular-modifiers-of-kidney-stones
#4
Bryan G Alamani, Jeffrey D Rimer
PURPOSE OF REVIEW: This review discusses the role of molecular modifiers as inhibitors of kidney stone formation, drawing largely from in-vitro evidence while also citing relevant in-vivo studies. An emphasis is placed on physical observations of crystal growth inhibition, including mechanisms of action that focus predominantly on the literature of calcium oxalate and L-cystine. RECENT FINDINGS: The last decade has witnessed several breakthroughs in the identification of molecules with promise to curb kidney stone formation, as well as discoveries of the mechanisms by which these molecules (or combinations thereof) function as inhibitors of pathological crystal growth...
April 13, 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/28405703/metabolic-syndrome-contributes-to-renal-injury-mediated-by-hyperoxaluria-in-a-murine-model-of-nephrolithiasis
#5
Javier Sáenz-Medina, E Jorge, C Corbacho, M Santos, A Sánchez, P Soblechero, E Virumbrales, E Ramil, M J Coronado, I Castillón, D Prieto, J Carballido
Metabolic syndrome (MS) individuals have a higher risk of developing chronic kidney disease through unclear pathogenic mechanisms. MS has been also related with higher nephrolithiasis prevalence. To establish the influence of MS on renal function, we designed a murine model of combined metabolic syndrome and hyperoxaluria. Four groups of male Sprague-Dawley rats were established: (1) control group (n = 10) fed with standard chow; (2) stone former group (SF) (n = 10) fed with standard chow plus 0.75% ethylene glycol administered in the drinking water; (3) metabolic syndrome group (MS) (n = 10), fed with 60% fructose diet; (4) metabolic syndrome + stone former group (MS + SF) (n = 10), 60% fructose diet and 0...
April 12, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28403796/riboswitches-as-potential-targets-for-the-development-of-anti-biofilm-drugs
#6
José A Reyes-Darias, Tino Krell
In nature, bacteria can exist as single motile cells or as sessile cellular community, known as microbial biofilms. Bacteria within biofilms are embedded in a self-produced extracellular matrix that makes them more resistant to antibiotic treatment and responses of the host immune system. Microbial biofilms are very important in medicine since they are associated with several human diseases such as dental caries, periodontitis, otitis media, infective endocarditis, infectious kidney stones, osteomyelitis or prostatitis...
April 7, 2017: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/28401880/gallstone-ileus-a-case-treated-with-minilaparotomy-and-a-review-of-the-literature
#7
Francesco Zappia, Giovanni Petracca, Carlo Alessandro Talarico
Gallstone ileus is a rare complication of cholelithiasis which occurs in less than 1% of patients and is the cause of 1- 4% of cases of small bowel obstruction. The pathogenesis involves the formation of a bilioenteric fistula. We report the case of gallstone ileus in an 81-year old woman with typical abdominal pain, arterial hypertension and coronary artery disease. An abdominal computed tomography (CT) scan showed pneumobilia, dilated loops of small bowel and an ectopic gallstone obstructing the intestinal lumen...
March 29, 2017: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/28401383/gallstone-disease-after-laparoscopic-sleeve-gastrectomy-in-an-asian-population-what-proportion-of-gallstones-actually-becomes-symptomatic
#8
Muhammed Yaser Hasan, Davide Lomanto, Lee Leng Loh, Jimmy Bok Yan So, Asim Shabbir
BACKGROUND: Despite evidence on gallstone disease after laparoscopic sleeve gastrectomy (LSG), there is an existing lack of consensus on practice guidelines, i.e., surveillance and stone-lowering prophylaxis. Available evidence also has a racial bias as western reports predominate current data. Considering the growing popularity of LSG in Asia and the unique Asian anthropometrics, we have attempted to provide a regional perspective by reviewing our LSG database to investigate the epidemiology of this complication...
April 11, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28394535/-metaphylaxis-of-urolithiasis-new-look-modern-approach-implementation-in-a-mobile-application
#9
N K Gadzhiev, S S Brovkin, V E Grigorev, V V Dmitriev, V A Malkhasyan, D D Shkarupa, A V Pisarev, D V Mazurenko, V M Obidnyak, I N Orlov, S V Popov, N S Tagirov, S V Petrov
AIM: To analyze the sub-segment of mHealth devoted to assessing of the risk of recurrent stone formation and metaphylaxis of stone formation. To design a smartphone application (app.) in Russian language for urolithiasis patients. MATERIALS AND METHODS: Three working groups of urologists from three St. Petersburg clinics searched for downloadable medical applications relevant to the above requirements. After searching and analyzing existing medical applications, the most acceptable design and structure of our own application were identified...
April 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28392511/combination-of-vitamin-e-and-vitamin-c-alleviates-renal-function-in-hyperoxaluric-rats-via-antioxidant-activity
#10
Orapun Jaturakan, Thasinas Dissayabutra, Narongsak Chaiyabutr, Anusak Kijtawornrat, Piyaratana Tosukhowong, Anudep Rungsipipat, Thumnoon Nhujak, Chollada Buranakarl
Hyperoxaluria and oxidative stress are risk factors in calcium oxalate (CaOx) stone formation. Supplement with antioxidant could be effective in prevention of recurrent stone formation. The present study aims to evaluate the protective effects of vitamin E and vitamin C in hyperoxaluric rat. The experiment was performed in rats for 21 days. Rats were divided into 5 groups as follows: control (group 1, n=8), hyperoxaluric rats (group 2, n=8), hyperoxaluric rats with vitamin E supplement (group 3, n=7), hyperoxaluric rats with vitamin C supplement (group 4, n=7) and hyperoxaluric rats with vitamin E and C supplement (group 5, n=7)...
April 8, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28388209/wind-driven-formation-of-ice-bridges-in-straits
#11
Bhargav Rallabandi, Zhong Zheng, Michael Winton, Howard A Stone
Ice bridges are static structures composed of tightly packed sea ice that can form during the course of its flow through a narrow strait. Despite their important role in local ecology and climate, the formation and breakup of ice bridges is not well understood and has proved difficult to predict. Using long-wave approximations and a continuum description of sea ice dynamics, we develop a one-dimensional theory for the wind-driven formation of ice bridges in narrow straits, which is verified against direct numerical simulations...
March 24, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28384929/a-case-report-on-multiple-stones-in-the-thyroid-gland-in-association-with-sclerosing-thyroiditis-an-unusual-encounter
#12
Gaurav Shandilya, Ravish Kumar Sinha, Nishith Ekka, Vinod Kumar
Stones are very frequently found in the gallbladder and urinary tract. Rarely the thyroid gland can be a site for stone formation. Few cases of calcification in thyroid gland have been described in the medical literature in association with papillary carcinoma and multinodular goiter. A unique case of a thyroid swelling studded with multiple stones in its parenchyma, in the histopathological background of sclerosing thyroiditis in an 80-year-old male is documented here. Surgical excision was undertaken with an uneventful postoperative period...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28381520/melamine-induces-ca-2-sensing-receptor-activation-and-elicits-apoptosis-in-proximal-tubular-cells
#13
Allen J Yiu, Cliff-Lawrence Ibeh, Sanjit K Roy, Bidhan C Bandyopadhyay
Melamine causes renal tubular cell injury through inflammation, fibrosis and apoptosis. While melamine effects the rise in intracellular Ca(2+) concentration ([Ca(2+)]i), reactive oxygen species (ROS) production, and pro-apoptotic pathway activation, the mechanism of upstream Ca(2+) signaling is unknown. Since melamine has some structural similarities with L-amino acids, which endogenously activates Ca(2+)-sensing receptors (CSR), we examined the effect of melamine on CSR-induced Ca(2+) signaling and apoptotic cell death...
April 5, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28377802/an-observational-study-on-the-association-of-nonalcoholic-fatty-liver-disease-and-metabolic-syndrome-with-gall-stone-disease-requiring-cholecystectomy
#14
Farah Ahmed, Qamaruddin Baloch, Zahid Ali Memon, Iqra Ali
OBJECTIVE: Recognition of Non alcoholic fatty liver disease (NAFLD) and metabolic syndrome in patients with gallstones undergoing laparoscopic or open cholecystectomy, along with it we will also study the life style of patients with gall stones. BACKGROUND: Patients with gallstones have associated NAFLD, with concurrent metabolic syndrome and these ailments share similar factors for example obesity, hypertriglyceridemia and diabetes mellitus. Factors like body mass index, gender, raised lipid levels, use of contraceptives and alcohol and having diabetes, physical inactiveness, multiparous women, water with excessive iron content, metabolic syndrome, and NAFLD are accountable factors for gallstones formation...
May 2017: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/28373545/neil1-protects-against-aflatoxin-induced-hepatocellular-carcinoma-in-mice
#15
Vladimir Vartanian, Irina G Minko, Supawadee Chawanthayatham, Patricia A Egner, Ying-Chih Lin, Lauriel F Earley, Rosemary Makar, Jennifer R Eng, Matthew T Camp, Liang Li, Michael P Stone, Michael R Lasarev, John D Groopman, Robert G Croy, John M Essigmann, Amanda K McCullough, R Stephen Lloyd
Global distribution of hepatocellular carcinomas (HCCs) is dominated by its incidence in developing countries, accounting for >700,000 estimated deaths per year, with dietary exposures to aflatoxin (AFB1) and subsequent DNA adduct formation being a significant driver. Genetic variants that increase individual susceptibility to AFB1-induced HCCs are poorly understood. Herein, it is shown that the DNA base excision repair (BER) enzyme, DNA glycosylase NEIL1, efficiently recognizes and excises the highly mutagenic imidazole ring-opened AFB1-deoxyguanosine adduct (AFB1-Fapy-dG)...
April 3, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28373152/the-systematic-classification-of-urinary-stones-combine-using-ftir-and-sem-edax
#16
REVIEW
Rui-Hong Ma, Xiao-Bing Luo, Qin Li, Hai-Qiang Zhong
BACKGROUND: To explore underlying mechanism of urinary stones formation, the composition and microstructure of urinary stones were analyzed systematically with a large sample study from China. MATERIALS AND METHODS: A total of 2437 urinary stones were obtained from the urology department at our Hospital. The composition of the stones was analyzed by Fourier transform infrared spectroscopy (FTIR). Meanwhile, the microstructure and element distribution were observed with scanning electron microscopy combined with element distribution analysis (SEM-EDAX)...
March 31, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28365270/a-calcium-to-citrate-ratio-will-distinguish-solitary-and-recurrent-stone-forming-children
#17
William DeFoor, Elizabeth Jackson, Marion Schulte, Zaheer Alam, John Asplin
PURPOSE: The prevalence of urinary stone disease is increasing in children. We have previously reported a high rate of urinary metabolic abnormalities in stone-forming children including hypercalciuria and hypocitraturia. The purpose of this study is to determine if a calcium to citrate ratio can help predict those at risk for recurrent stone formation. MATERIAL AND METHODS: A retrospective cohort study was performed to assess calcium to citrate ratios in children with urolithiasis...
March 29, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28364100/-expression-of-matrix-gla-protein-and-bone-morphogenetic-protein-2-in-renal-papillary-tissues-in-patients-with-calcium-oxalate-kidney-stones
#18
Min Zhu, Feng Zeng, Yu Cui, Xifeng Liu, Hequn Chen
To compare expression levels of matrix Gla protein (MGP) and bone morphogenetic protein 2 (BMP-2) in Randall's plaque of renal papillary tissues in patients with calcium oxalate kidney stones and the underlying mechanism for stone formation.
 Methods: A total of 30 samples of Randall's plaque in renal papillary tissues from patients with calcium oxalate kidney stones were collected from the Department of Urology of Xiangya Hospital of Central South University from April, 2015 to December, 2015 and served as an experimental group...
March 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28361470/pathogenesis-of-calcium-oxalate-urinary-stone-disease-species-comparison-of-humans-dogs-and-cats
#19
REVIEW
Allison L O'Kell, David C Grant, Saeed R Khan
Idiopathic calcium oxalate nephrolithiasis is a highly recurrent disease that is increasing in prevalence. Decades of research have not identified effective methods to consistently prevent the formation of nephroliths or induce medical dissolution. Idiopathic calcium oxalate nephroliths form in association with renal papillary subepithelial calcium phosphate deposits called Randall's plaques (RPs). Rodent models are commonly used to experimentally induce calcium oxalate crystal and stone formation, but a rodent model that conclusively forms RPs has not been identified...
March 30, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28360958/rare-complication-of-needleless-mini-sling-procedure-case-report
#20
Mustafa Karalar, Ibrahim Keles, Serdar Unlu, Hasmet Sarici, Mesut Kose, Cemil Ay
The mini-sling procedure is a widely used, minimally invasive treatment for stress urinary incontinence. While bladder perforation and stone formation over the mesh is not an expected complication of the mini-sling procedure, in this case, we report on the management of bladder calculi formed over the mesh, which was passed through the bladder while applying the mini-sling procedure, and was eventually removed using holmium laser. Performing cystoscopy in patients with irritative and obstructive symptoms after the sling procedure will help confirm bladder perforation, and an endoscopic approach using holmium laser is an effective treatment...
March 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
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