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Kidney cancer pathology

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https://www.readbyqxmd.com/read/29340018/survival-prediction-of-kidney-renal-papillary-cell-carcinoma-by-comprehensive-lncrna-characterization
#1
Huihua Lan, Jianghui Zeng, Gang Chen, Huayi Huang
Kidney renal papillary cell carcinoma (KIRP) accounts for 10%-15% of renal cell carcinoma (RCC), patients with KIRP tend to have a poor prognosis, and there was a lack of effective prognostic indicators for this type of cancer. Currently, owing to the availability of The Cancer Genome Atlas (TCGA), long non-coding RNAs (LncRNAs) have been discovered to indicate a prognostic value in some tumors. In that regard, we analyzed lncRNA-sequencing data of KIRP in TCGA, and among 780 differentially-expressed lncRNAs, we selected 37 lncRNAs which were able to assist the prognosis...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29332592/construction-of-an-m1gs-ribozyme-for-targeted-and-rapid-mrna-cleavage-application-on-the-ets-2-oncogene
#2
Chrisavgi Toumpeki, Dimitrios Anastasakis, Ioannis Panagoulias, Vassiliki Stamatopoulou, Tassos Georgakopoulos, Sofia Kallia-Raftopoulos, Athanasia Mouzaki, Denis Drainas
Background RNase P-mediated cleavage of target RNAs has been proposed as a promising tool for gene silencing. Ets-2 proto-oncogene controls the expression of a wide variety of genes involved in cancer and immunity. Objective Construction of a functional RNase P-based ribozyme (M1GS303) that targets Ets-2 mRNA Method The accessible sites for targeting of Ets-2 mRNA were identified by footprinting analysis. M1GS303 ribozyme was constructed by cloning. The activity of the ribozyme in the presence or absence of spiramysin in E...
January 11, 2018: Medicinal Chemistry
https://www.readbyqxmd.com/read/29329518/the-use-of-eculizumab-in-gemcitabine-induced-thrombotic-microangiopathy
#3
Vinod Krishnappa, Mohit Gupta, Haikoo Shah, Abhijit Das, Natthavat Tanphaichitr, Robert Novak, Rupesh Raina
BACKGROUND: Thrombotic microangiopathy (TMA) secondary to gemcitabine therapy (GiTMA) is a very rare pathology that carries a poor prognosis, with nearly half of the cases progressing to end stage renal disease. GiTMA is most commonly associated with adenocarcinomas, most notably pancreatic cancers. The mainstay of management is withdrawal of the offending drug and supportive care. Plasmapheresis has a limited role and hemodialysis may help in the management of fluid overload secondary to renal failure...
January 12, 2018: BMC Nephrology
https://www.readbyqxmd.com/read/29325693/updates-in-the-eighth-edition-of-the-tumor-node-metastasis-staging-classification-for-urologic-cancers
#4
REVIEW
Gladell P Paner, Walter M Stadler, Donna E Hansel, Rodolfo Montironi, Daniel W Lin, Mahul B Amin
The Tumor-Node-Metastasis (TNM) classification on cancer staging, jointly developed by the American Joint Commission on Cancer (AJCC) and the Union for International Cancer Control (UICC), has been updated to its 8th edition with two contemporaneous versions published by the AJCC and UICC. While the goal of the AJCC and UICC is to have identical TNM staging systems, differences exist between these two publications including in the staging of urologic cancers. Among several new facets in the AJCC staging manual, a select few of greater import include an expanded section on imaging, presentation of levels of evidence for significant changes, and endorsement of risk assessment models that pass the AJCC quality criteria such as in prostate cancer...
January 8, 2018: European Urology
https://www.readbyqxmd.com/read/29317240/toxicity-and-cardiac-effects-of-acute-exposure-to-tryptophan-metabolites-on-the-kynurenine-pathway-in-early-developing-zebrafish-danio-rerio-embryos
#5
Michal Majewski, Natalia Kasica, Anna Jakimiuk, Piotr Podlasz
Defects in tryptophan metabolism on the l-kynurenine pathway (KP) are implicated in a number of human diseases, including chronic kidney disease, brain edema or injury, tuberculosis and malaria - as well as cancer, neurodegenerative and autoimmune disorders. However, it is unclear to what extent detrimental effects of exposure to tryptophan metabolites might impact the early development of organism. Thus, this study examined the effects of KP exposure in zebrafish embryos starting at the blastula period (4hpf) and the segmentation stage (24hpf)...
January 6, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29316381/rapid-intra-operative-diagnosis-of-kidney-cancer-by-atr-ir-spectroscopy-of-tissue-smears
#6
Milda Pucetaite, Martynas Velicka, Vidita Urboniene, Justinas Ceponkus, Rimante Bandzeviciute, Feliksas Jankevicius, Arunas Zelvys, Valdas Sablinskas, Gerald Steiner
Herein, a technique to analyze air-dried kidney tissue impression smears by means of Attenuated Total Reflection Infrared (ATR-IR) spectroscopy is presented. Spectral tumor markers - absorption bands of glycogen - are identified in the ATR-IR spectra of the kidney tissue smear samples. Thin kidney tissue cryo-sections currently used for IR spectroscopic analysis lack such spectral markers as the sample preparation causes irreversible molecular changes in the tissue. In particular, freeze-thaw cycle results in degradation of the glycogen and reduction or complete dissolution of its content...
January 9, 2018: Journal of Biophotonics
https://www.readbyqxmd.com/read/29314261/future-osteoporotic-fracture-risk-related-to-lumbar-vertebral-trabecular-attenuation-measured-at-routine-body-ct
#7
Scott J Lee, Peter M Graffy, Ryan D Zea, Timothy J Ziemlewicz, Perry J Pickhardt
We sought to determine if vertebral trabecular attenuation values measured on routine body CT scans obtained for a variety of unrelated indications can predict future osteoporotic fractures at multiple skeletal sites. For this HIPAA-compliant and IRB-approved retrospective cohort study, trabecular attenuation of the first lumbar vertebra was measured in 1966 consecutive older adults who underwent chest and/or abdominal CT at a single institution over the course of one year. New pathologic fragility fractures that occurred after a patient's CT study date were identified through an electronic health record database query using ICD-9 codes for vertebral, hip, and extremity fractures...
January 3, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29288007/overexpression-of-semaphorin-3a-in-patients-with-urothelial-cancer
#8
Zahava Vadasz, Jacob Rubinstein, Jacob Bejar, Hilla Sheffer, Sarel Halachmi
OBJECTIVE: A highly sensitive and specific urine marker for the detection of recurrent urothelial cancer and for screening healthy population or people at risk for urothelial cancer has not been found yet. As urine cytology is not sensitive enough, patients with non-muscle-invasive bladder cancer need lifelong follow-up involving multiple invasive cystoscopies. Our aims of study were to examine the expression of semaphorin 3A in urothelial cancer patients and to evaluate semaphorin 3A as a potential marker for urothelial cancer...
December 26, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/29285942/-non-alcoholic-fatty-liver-disease-as-a-component-of-the-metabolic-syndrome-and-its-causal-correlations-with-other-extrahepatic-diseases
#9
Tamás Halmos, Ilona Suba
Non-alcoholic fatty liver disease is the most common non-infectious chronic liver-disease in our age, and is a spectrum of all the diseases associated with increased fat accumulation in the hepatocytes. Its development is promoted by sedentary life-style, over-feeding, and certain genetic predisposition. Prevalence in the adult population, even in Hungary is ~30%. In a part of cases, this disease may pass into non-alcoholic steatohepatitis, later into fibrosis, rarely into primary hepatocellular cancer. Fatty liver is closely and bidirectionally related to the metabolic syndrome and type 2 diabetes, and nowadays there is a general consensus that fatty liver is the hepatic manifestation of the metabolic sycndrome...
December 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/29283437/analytic-survey-of-57-cases-of-oral-metastases
#10
Yingci Liu, Richard J Vargo, Elizabeth A Bilodeau
BACKGROUND: Oral lesions have been reported among the first signs of an undiagnosed metastatic disease. Accurate diagnosis of an occult metastasis remains critical in determining the treatment course. Previous studies regarding oral metastatic tumors present varied data regarding the most frequent metastases to the oral cavity. These discrepancies echo the changes in incidence rates for certain malignancies over time and demonstrate the need for periodic updates in oral metastasis studies...
December 28, 2017: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/29246323/triptolide-restores-autophagy-to-alleviate-diabetic-renal-fibrosis-through-the-mir-141-3p-pten-akt-mtor-pathway
#11
Xiao-Yu Li, Shan-Shan Wang, Zhe Han, Fei Han, Yun-Peng Chang, Yang Yang, Mei Xue, Bei Sun, Li-Ming Chen
Fibrosis is the major pathological feature of diabetic kidney disease (DKD). Autophagy, a process to maintain metabolic homeostasis, is obviously inhibited in DKD. Triptolide (TP) is a traditional Chinese medicine extract known for immune suppression and anti-inflammatory and anti-cancer activities. In this study, we investigated the effects of TP on autophagy and fibrosis in DKD. TP restored autophagy and alleviated fibrosis in DKD rats and high-glucose-incubated human mesangial cells. After we applied 3-methyladenine (an autophagy inhibitor) and autophagy-related gene 5-small interfering RNA (siRNA), we found that the improvement of fibrosis on TP was related to the restoration of autophagy...
December 15, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/29243738/tissue-staining-for-thsd7a-in-glomeruli-correlates-with-serum-antibodies-in-primary-membranous-nephropathy-a-clinicopathological-study
#12
Shree G Sharma, Christopher P Larsen
Thrombospondin type-1 domain-containing 7A (THSD7A) is the most recently recognized target antigen in patients with membranous nephropathy. We stained membranous nephropathy biopsies processed in our laboratory for phospholipase A2 receptor and THSD7A over an 18-month period and selected all THSD7A-positive cases for study. Serum samples from most patients were tested by an indirect immunofluorescence assay for the presence of THSD7A antibodies (Euroimmun). A total of 31 patients were diagnosed with THSD7A-associated membranous nephropathy for a prevalence of 2...
December 15, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29231160/oxaliplatin-induced-acute-tubulointerstitial-nephritis-two-case-reports%C3%A2
#13
You-Jung Choi, Kook-Hwan Oh, Hye-Ryun Kang, Soo-Jin Lee
Oxaliplatin is a platinum compound commonly used in the treatment of advanced colorectal cancer. This report describes two patients who had received repetitive combination chemotherapy including oxaliplatin for the treatment of metastatic colon cancer and who visited the emergency department with acute kidney injury several days after experiencing a hypersensitivity reaction to oxaliplatin. In both cases, the pathologic diagnosis was acute tubulointerstitial nephritis, and corticosteroid therapy resulted in improved renal function...
December 12, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/29228714/unique-expression-signatures-of-circular-rnas-in-response-to-dna-tumor-virus-sv40-infection
#14
Jiandong Shi, Ningzhu Hu, Jianfang Li, Zhaoping Zeng, Ling Mo, Jing Sun, Meini Wu, Yunzhang Hu
Circular RNAs (circRNAs), identified as a class of widely expressed endogenous regulatory RNAs, are involved in diverse physiological and pathological processes. However, their role in viral pathogenesis and cellular antiviral response remains unexplored. In this study, a potent DNA tumor virus, simian virus 40 (SV40), was used as a model to investigate the viral influences on cellular circRNA transcriptome. Using RNA-seq, 15,241 putative circRNAs were identified de novo from 5,057 parental genes in monkey kidney-derived Vero cells...
November 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29224095/sex-differences-in-muscle-wasting
#15
Lindsey J Anderson, Haiming Liu, Jose M Garcia
With aging and other muscle wasting diseases, men and women undergo similar pathological changes in skeletal muscle: increased inflammation, enhanced oxidative stress, mitochondrial dysfunction, satellite cell senescence, elevated apoptosis and proteasome activity, and suppressed protein synthesis and myocyte regeneration. Decreased food intake and physical activity also indirectly contribute to muscle wasting. Sex hormones also play important roles in maintaining skeletal muscle homeostasis. Testosterone is a potent anabolic factor promoting muscle protein synthesis and muscular regeneration...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29210639/guanylate-cyclase-c-a-current-hot-target-from-physiology-to-pathology
#16
Jose Antonio Uranga, Marta Castro, Raquel Abalo
Guanylate cyclase C (GC-C) receptor is a transmembrane receptor, predominantly expressed in intestinal epithelial cells, that plays a main role in homeostasis and function of the digestive tract. The endogenous ligands for this receptor are the paracrine hormones uroguanylin and guanylin. The heat-stable enterotoxin, produced by enterotoxigenic bacteria, is also a natural ligand of this receptor. Upon ligand binding, GC-C receptors increase the second messenger cyclic guanosine monophosphate (cGMP) levels, regulating a variety of key cell-type specific processes such as chloride and bicarbonate secretion (which increases luminal fluid and intestinal motility), epithelial cell growth, regulation of intestinal barrier integrity and visceral sensitivity...
December 5, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29210632/role-of-matrix-metalloproteinases-in-degenerative-kidney-disorders
#17
Shifa Narula, Chanderdeep Tandon, Simran Tandon
Matrix metalloproteinases (MMPs) are members of calcium dependent-zinc containing endopeptidases that play a pivotal role in extracellular matrix (ECM) remodeling. MMPs are also known to cleave non-matrix proteins, including cell surface receptors, TNF-α, angiotensin-II, growth factors, (especially transforming growth factor-β1, ΤGF-β1) plasminogen, endothelin and other bioactive molecules. The tissue inhibitors of metalloproteinases (TIMPs) inhibit the activity of MMPs and decrease ECM degradation. Various patho-physiological conditions have been linked with the imbalance of ECM synthesis and degradation...
December 5, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29208006/identification-and-validation-of-a-44-gene-expression-signature-for-the-classification-of-renal-cell-carcinomas
#18
Qifeng Wang, Hualei Gan, Chengshu Chen, Yifeng Sun, Jinying Chen, Midie Xu, Weiwei Weng, Liyu Cao, Qinghua Xu, Jian Wang
BACKGROUND: Renal cancers account for more than 3% of all adult malignancies and cause more than 23,400 deaths per year in China alone. The four most common types of kidney tumours include clear cell, papillary, chromophobe and benign oncocytoma. These histological subtypes vary in their clinical course and prognosis, and different clinical strategies have been developed for their management. Some kidney tumours can be very difficult to distinguish based on the pathological assessment of morphology and immunohistochemistry...
December 6, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/29203517/urogualylin-a-new-actor-in-the-energy-balance-movie
#19
Cintia Folgueira, Silvia Barja-Fernandez, Patricia Gonzalez-Saenz, Veronica Pena-Leon, Cecilia Castelao, Manuel Ruiz-Piñon, Felipe F Casanueva, Rubén Nogueiras, Luisa Maria Seoane
Uroguanylin (UGN) is a potential target in the fight against obesity. The mature protein is released after enzymatic cleavage from its natural precursor, pro-UGN. UGN is mostly produced in the gut, and its production is regulated by nutritional status. However, UGN is also produced in other tissues such as the kidneys. In the past, UGN has been widely studied as a natriuretic peptide owing to its involvement in several different pathologies such as heart failure, cancer, and gastrointestinal diseases. However, recent studies have suggested that UGN acts also as a regulator of body weight homeostasis because it modulates both food intake and energy expenditure...
December 4, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/29185295/complications-and-survival-of-megaprostheses-after-resection-of-bone-metastases
#20
M De Gori, A D’Arienzo, L Andreani, G Beltrami, D A Campanacci, P De Biase, F Frenos, S Giannotti, F Sacchetti, F Totti, P Parchi, R Capanna
Treatment of bone metastases is often palliative, aiming at pain control and stabilization or prevention of pathological fractures. However, a complete resection with healing purposes can be performed in selected cases. The aim of our work was to evaluate the survival of megaprostheses used for reconstruction after bone metastases. Between January 2001 and March 2015, we implanted 169 Megasystem-C® (Waldemar LINK® GmbH & Co. KG, Hamburg, Germany) after bone metastasis resection. Patients, 95 females and 74 males, were operated at an average age of 61 (12-87) years for proximal femoral resection in 135 (79...
October 2017: Journal of Biological Regulators and Homeostatic Agents
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