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https://www.readbyqxmd.com/read/29052600/ultrasensitive-automated-rna-in-situ-hybridization-for-kappa-and-lambda-light-chain-mrna-detects-b-cell-clonality-in-tissue-biopsies-with-performance-comparable-or-superior-to-flow-cytometry
#1
Ling Guo, Zhen Wang, Courtney M Anderson, Emerald Doolittle, Siobhan Kernag, Claudiu V Cotta, Sarah L Ondrejka, Xiao-Jun Ma, James R Cook
The assessment of B-cell clonality is a critical component of the evaluation of suspected lymphoproliferative disorders, but analysis from formalin-fixed, paraffin-embedded tissues can be challenging if fresh tissue is not available for flow cytometry. Immunohistochemical and conventional bright field in situ hybridization stains for kappa and lambda are effective for evaluation of plasma cells but are often insufficiently sensitive to detect the much lower abundance of light chains present in B-cells. We describe an ultrasensitive RNA in situ hybridization assay that has been adapted for use on an automated immunohistochemistry platform and compare results with flow cytometry in 203 consecutive tissues and 104 consecutive bone marrows...
October 20, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29051147/organic-anion-transporting-polypeptides-oatps-mediated-drug-drug-interaction-study-between-rosuvastatin-and-cyclosporine-a-in-chimeric-mice-with-humanized-liver
#2
Masashi Uchida, Yoriko Tajima, Masakazu Kakuni, Yutaka Kageyama, Taro Okada, Eri Sakudara, Chise Tateno, Ryoji Hayashi
The influence of transporters on the pharmacokinetics of drugs is being increasingly recognized, and DDIs via transporters may be a risk factor for adverse events. Cyclosporine A, a strong OATP-inhibitor, has been reported to increase the systemic exposure of rosuvastatin, an OATP-substrate, by 7.1-fold in clinical studies. PXB-mice are chimeric mice with humanized livers that are highly repopulated with human hepatocytes, and have been widely used for drug discovery in DMPK studies. In the present study, we examined in vivo and in vitro DDIs between rosuvastatin and cyclosporine A in PXB-mice and fresh human hepatocytes (PXB-cells) obtained from PXB-mice...
October 19, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/29050494/whole-transcriptome-analysis-identifies-differentially-regulated-networks-between-osteosarcoma-and-normal-bone-samples
#3
Xuan Dung Ho, Phuong Phung, Van Q Le, Van H Nguyen, Ene Reimann, Ele Prans, Gea Kõks, Katre Maasalu, Nghi Tn Le, Le H Trinh, Hoang G Nguyen, Aare Märtson, Sulev Kõks
We performed whole transcriptome analysis of osteosarcoma bone samples. Initially, we sequenced total RNA from 36 fresh-frozen samples (18 tumoral bone samples and 18 non-tumoral paired samples) matching in pairs for each osteosarcoma patient. We also performed independent gene expression analysis of formalin-fixed paraffin-embedded samples to verify the RNAseq results. Formalin-fixed paraffin-embedded samples allowed us to analyze the effect of chemotherapy. Data were analyzed with DESeq2, edgeR and Reactome packages of R...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29050277/the-clinical-significance-of-hpip-and-the-associated-prognosis-in-cervical-cancer
#4
Fanling Meng, Haixia Liu, Shuang Liu, Rong Ma
Hematopoietic pre-B-cell leukemia transcription factor-interacting protein (HPIP), is known to promote tumor development and metastasis. However its role in cervical cancer remains unknown. The purpose of this study was to investigate the clinical significance of HPIP expression and the prognosis of patients with cervical cancer. Fresh frozen tissues from 10 samples of cervical cancer and 8normal cervical tissues were analyzed for HPIP expression using real-time reverse transcription PCR and Western blot analysis...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29050224/secreted-mir-210-3p-as-non-invasive-biomarker-in-clear-cell-renal-cell-carcinoma
#5
Vincenzo Petrozza, Antonio Luigi Pastore, Giovanni Palleschi, Claudia Tito, Natale Porta, Serena Ricci, Chiara Marigliano, Manuela Costantini, Giuseppe Simone, Angelina Di Carlo, Michele Gallucci, Antonio Carbone, Francesco Fazi
The most common subtype of renal cell carcinoma (RCC) is clear cell RCC (ccRCC). It accounts for 70-80% of all renal malignancies representing the third most common urological cancer after prostate and bladder cancer. The identification of non-invasive biomarkers for the diagnosis and responsiveness to therapy of ccRCC may represent a relevant step-forward in ccRCC management. The aim of this study is to evaluate whether specific miRNAs deregulated in ccRCC tissues present altered levels also in urine specimens...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29048330/calibration-and-analysis-of-a-multimodal-micro-ct-and-structured-light-imaging-system-for-the-evaluation-of-excised-breast-tissue
#6
David Martin McClatchy Iii, Elizabeth J Rizzo, Jeff Meganck, Josh Kempner, Jared Vicory, Wendy A Wells, Keith D Paulsen, Brian W Pogue
A multimodal micro-computed tomography (CT) and multi-spectral structured light imaging (SLI) system is introduced and systematically analyzed to test its feasibility to aid in margin delineation during breast conserving surgery (BCS). Phantom analysis of the micro-CT yielded a signal-to-noise ratio (SNR) of 34, a contrast of 1.64, and a minimum detectable resolution of 240 m for a 1.2 min scan. The SLI system, spanning wavelengths 490 nm to 800 nm and spatial frequencies up to 1.37 mm-1, was evaluated with aqueous tissue simulating phantoms having variations in particle size distribution, scatter density, and blood volume fraction...
October 19, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29047409/novel-approach-to-gastric-mucosal-defect-repair-using-fresh-amniotic-membrane-allograft-in-dogs-experimental-study
#7
Haithem A Farghali, Naglaa A AbdElKader, Marwa S Khattab, Huda O AbuBakr
BACKGROUND: Gastric mucosal defect could result from several causative factors including the use of nonsteroidal anti-inflammatory drugs, Helicobacter pylori infection, gastrointestinal and spinal cord diseases, and neoplasia. This study was performed to achieve a novel simple, inexpensive, and effective surgical technique for the repair of gastric mucosal defect. METHODS: Six adult male mongrel dogs were divided into two groups (three dogs each). In the control positive group (C + ve), dogs were subjected to surgical induction of gastric mucosal defect and then treated using traditional medicinal treatment for such a condition...
October 18, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29047209/effects-of-cryopreservation-on-adipose-tissue-derived-microvascular-fragments
#8
Matthias W Laschke, Philipp Karschnia, Claudia Scheuer, Alexander Heß, Wolfgang Metzger, Michael D Menger
Adipose tissue-derived microvascular fragments (ad-MVF) are effective vascularization units for tissue engineering. They rapidly reassemble into new microvascular networks after seeding on scaffolds and subsequent in vivo implantation. Herein, we analyzed whether the vascularization capacity of ad-MVF is affected by cryopreservation. Ad-MVF were isolated from the epididymal fat pads of C57BL/6 mice and cryopreserved for 7 days to compare their morphology, viability, cellular composition and protein expression with freshly isolated control ad-MVF...
October 19, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29045546/characterization-of-adipose-tissue-product-quality-using-measurements-of-oxygen-consumption-rate
#9
Thomas M Suszynski, David A Sieber, Kathryn Mueller, Allen L Van Beek, Bruce L Cunningham, Jeffrey M Kenkel
Background: Fat grafting is a common procedure in plastic surgery but associated with unpredictable graft retention. Adipose tissue (AT) "product" quality is affected by the methods used for harvest, processing and transfer, which vary widely amongst surgeons. Currently, there is no method available to accurately assess the quality of AT. Objectives: In this study, we present a novel method for the assessment of AT product quality through direct measurements of oxygen consumption rate (OCR)...
October 13, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29044732/fresh-tissue-parathyroid-allotransplantation-with-short-term-immunosuppression-1-year-follow-up
#10
Emrah Yucesan, Beyza Goncu, Harun Basoglu, Nur Ozten Kandas, Yeliz Emine Ersoy, Fahri Akbas, Erhan Aysan
BACKGROUND: Permanent hypoparathyroidism is a serious problem and requires medications indefinitely. Parathyroid allotransplantation (PA) with short-term immunosuppression is definitive choice but long-term results are not clear. METHOD: We performed PA from two donors to two recipients. Both recipients were 39-year-old females. Donors were a 32-year-old female and a 36-year-old male, who both have chronic kidney disease. Routine tests, viral markers, and cross-matches were analyzed individually...
August 12, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/29044059/pathology-and-immunohistochemistry-of-capsular-bag-in-spontaneously-late-dislocated-capsular-bag-intraocular-lens-complex
#11
Harsha Bhattacharjee, Kasturi Bhattacharjee, Dipankar Das, Manpreet Singh, Piruthivi Sukumar, Diva Kant Misra
PURPOSE: Our study aims to evaluate the morphology, histopathology, and immunohistochemistry of the spontaneously late dislocated capsular bag-intraocular lens (CB-IOL) complex. Various etiologies and possible pathogenesis of the event are also discussed. METHODS: This was a tertiary-care setting and retrospective observational case series. The surgically explanted intact specimens of spontaneously late dislocated CB-IOL complex were studied. The demographics, duration of pseudophakia, IOL design/material, and specimen measurements were noted...
October 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29043522/cryovial-monolayer-vitrification-for-ovarian-tissue-cryopreservation
#12
Hongxia Li, Haixia Cao, Xingping Guo, Huaixiu Wang
The cryopreservation of ovarian tissue has been proved to be effective for fertility preservation. To find a better cryopreservation method, we tested the efficacy of cryovial monolayer vitrification method in comparison with that of needle immersed vitrification (NIV). Ovaries from 10 female kunming mice aged 6-8 weeks were cut into pieces and allocated into group A (cryovial monolayer vitrification method), group B (NIV method) and group C (fresh control). In group A, pieces of ovarian tissue were layered around the inner wall of cryovial as a monolayer; and in group B, pieces of ovarian tissue were pierced with a needle...
October 17, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/29042983/microrna-17-downregulates-expression-of-the-pten-gene-to-promote-the-occurrence-and-development-of-adenomyosis
#13
Haiyan Hu, Huijuan Li, Yuanli He
The aim of the current study was to evaluate the expression of microRNA (miR)-17 in the endometrial tissues of patients with adenomyosis (AM) and determine its biological function in the occurrence and development of the disease. A total of 45 fresh endometrial tissues of AM patients and 32 normal endometrial tissues were collected from healthy controls. The expression of miR-17 was evaluated using reverse transcription-quantitative polymerase chain reaction (RT-qPCR). The miR-17-targeting gene phosphatase and tensin homolog (PTEN) was predicted using bioinformatics and its expression was evaluated with RT-qPCR and western blot analysis...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29041318/composite-multiscale-entropy-analysis-of-reflective-terahertz-signals-for-biological-tissues
#14
Rui Zhang, Yuezhi He, Kai Liu, Liangliang Zhang, Shijing Zhang, Emma Pickwell-MacPherson, Yuejin Zhao, Cunlin Zhang
We demonstrate a composite multiscale entropy (CMSE) method of terahertz (THz) signal complexity analysis to distinguish different biological tissues. The THz signals reflected from fresh porcine skin and muscle tissues were measured and analyzed. The statistically significant difference and separation of the two tissues based on several parameters were analyzed and compared for THz spectroscopy and imaging, which verified the better performance of the CMSE method and further enhancement of the contrast among THz signals that interact with different tissues...
October 2, 2017: Optics Express
https://www.readbyqxmd.com/read/29040674/evaluation-of-apoptotic-and-autophagic-related-protein-expressions-before-and-after-in-vitro-maturation-of-fresh-slow-frozen-and-vitrified-pre-pubertal-mouse-testicular-tissue
#15
L Dumont, F Chalmel, A Oblette, B Berby, A Rives, V Duchesne, C Rondanino, N Rives
STUDY QUESTION: Do freezing and in vitro culture procedures enhance the expression of proteins involved in apoptotic or autophagic pathways in murine pre-pubertal testicular tissue? SUMMARY ANSWER: In vitro maturation strongly modified apoptosis- and autophagy-related relative protein levels in mice testicular tissue whereas the impact of cryopreservation procedures was minimal at the end of the culture. WHAT IS KNOWN ALREADY: In vitro spermatogenesis remains a challenging technical issue as it imposes to find a very close balance between survival and death of germ cell natural precursors (i...
October 11, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29040564/n-cadherin-identifies-human-endometrial-epithelial-progenitor-cells-by-in-vitro-stem-cell-assays
#16
Hong P T Nguyen, L Xiao, James A Deane, Ker-Sin Tan, Fiona L Cousins, Hirotaka Masuda, Carl N Sprung, Anna Rosamilia, Caroline E Gargett
STUDY QUESTION: Is there a specific surface marker that identifies human endometrial epithelial progenitor cells with adult stem cell activity using in vitro assays? SUMMARY ANSWER: N-cadherin isolates clonogenic, self-renewing human endometrial epithelial progenitor cells with high proliferative potential that differentiate into cytokeratin+ gland-like structures in vitro and identifies their location in some cells of gland profiles predominantly in basalis endometrium adjacent to the myometrium...
September 27, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29039491/non-canonical-hedgehog-signaling-activation-in-ovarian-borderline-tumors-and-ovarian-carcinomas
#17
Petar Ozretić, Diana Trnski, Vesna Musani, Ivana Maurac, Držislav Kalafatić, Slavko Orešković, Sonja Levanat, Maja Sabol
Hedgehog signaling pathway has been implicated in the pathology of ovarian cancer, and Survivin (BIRC5) has been suggested as a novel target of this pathway. Herein we investigated the role of Hedgehog signaling pathway and Survivin in ovarian carcinoma and borderline tumor samples. We aimed to determine possible ways of pathway modulation on primary ovarian cancer cells and an established cell line. RNA was extracted from fresh tumors and control tissues and gene expression was examined using qRT-PCR. Pathway activity in cell lines was examined after treatment with cyclopamine, SHH protein, GANT-61 or lithium chloride using qRT-PCR, western blot and confocal microscopy...
October 12, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/29039070/the-evaluation-of-xenotransplantation-of-feline-ovarian-tissue-vitrified-by-needle-immersed-vitrification-technique-into-male-immunodeficient-mice
#18
Mürşide Ayşe Demirel, Duygu Baki Acar, Burcu Ekim, Ferda Topal Çelikkan, Kübra Karakaş Alkan, Seçkin Salar, Esra Atabenli Erdemli, Sinan Özkavukçu, Seda Sağlam Yar, Halit Kanca, Ayhan Baştan
In this study, the efficiency of the "Needle Immersed Vitrification" technique was tested on cryopreserved feline ovarian tissue. For vitrification, ovarian fragments (0.5-1.5 mm(2)) from each ovary were collected; the grafts were exposed to 7.5-15% ethylene glycol and 7.5-15% dimethyl sulfoxide at room temperature and stored in liquid nitrogen at least 1 week. Morphologic examinations, expression of genes such as B cell lymphoma 2, B-cell lymphoma-2-associated X protein, Bone morphogenetic protein 15, zone of polarizing activity, zona pellucida C protein and DNA (cytosine-5)-methyltransferase 1, ultrastructural analysis and viability tests were carried out from collected grafts...
October 16, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/29038278/fidaxomicin-and-op-1118-inhibit-c-difficile-toxin-a-and-b-mediated-inflammatory-responses-via-inhibition-of-nf-%C3%AE%C2%BAb-activity
#19
Hon Wai Koon, Jiani Wang, Caroline C Mussatto, Christina Ortiz, Elaine C Lee, Diana Hoang-Ngoc Tran, Xinhua Chen, Ciaran P Kelly, Charalabos Pothoulakis
Objective:Clostridium difficile causes diarrhea and colitis by releasing toxin A and toxin B. In the human colon, both toxins cause intestinal inflammation and stimulate TNFα expression via activation of NF-κB. It is well established that the macrolide antibiotic fidaxomicin is associated with reduced relapses of C. difficile infection. We showed that fidaxomicin and its primary metabolite, OP-1118, significantly inhibited toxin A-mediated intestinal inflammation in mice in vivo and toxin A-induced cell rounding in vitro We aim to determine whether fidaxomicin and OP-1118 possess anti-inflammatory effects against toxin A and toxin B in the human colon and examine the mechanism of this response...
October 16, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29035738/thrombin-activatable-fluorescent-peptide-incorporated-gold-nanoparticles-for-dual-optical-computed-tomography-thrombus-imaging
#20
Sung-Pil Kwon, Sangmin Jeon, Sung-Hoon Lee, Hong Yeol Yoon, Ju Hee Ryu, Dayil Choi, Jeong-Yeon Kim, Jiwon Kim, Jae Hyung Park, Dong-Eog Kim, Ick Chan Kwon, Kwangmeyung Kim, Cheol-Hee Ahn
Thrombosis is an important pathophysiologic phenomenon in various cardiovascular diseases, which can lead to oxygen deprivation and infarction of tissues by generation of a thrombus. Thus, direct thrombus imaging can provide beneficial in diagnosis and therapy of thrombosis. Herein, we developed thrombin-activatable fluorescent peptide (TAP) incorporated silica-coated gold nanoparticles (TAP-SiO2@AuNPs) for direct imaging of thrombus by dual near-infrared fluorescence (NIRF) and micro-computed tomography (micro-CT) imaging, wherein TAP molecules were used as targeted thrombin-activatable peptide probes for thrombin-specific NIRF imaging...
October 9, 2017: Biomaterials
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