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Biopsy processing

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https://www.readbyqxmd.com/read/28230006/evaluation-of-the-safety-and-efficacy-of-percutaneous-radiofrequency-ablation-for-treating-multiple-breast-fibroadenoma
#1
Ping Li, Tang Xiao-Yin, Dan Cui, Jia-Chang Chi, Zhi Wang, Tao Wang, Xing-Xing Qi, Bo Zhai
BACKGROUND: This study was conducted to evaluate the safety and efficacy of ultrasound (US)-guided percutaneous radiofrequency ablation (RFA) for multiple breast fibroadenoma as an alternative to surgical resection. PATIENTS AND METHODS: Sixty-five patients with multiple breast fibroadenoma accepted general anesthesia and US-guided percutaneous RFA in our hospital from September 2014 to January 2016. Contrast-enhanced US (CEUS) was used immediately after operation to determine whether the tumor was ablated completely...
December 2016: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28229524/dermal-morphological-changes-following-salicylic-acid-peeling-and-microdermabrasion
#2
Amira A Abdel-Motaleb, Eman E Abu-Dief, Mahmoud Ra Hussein
BACKGROUND: Microdermabrasion and chemical peeling are popular, inexpensive, and safe methods for treatment of some skin disorders and to rejuvenate skin. OBJECTIVES: To study the alterations of the dermal connective tissue following salicylic acid peeling and microdermabrasion. METHODS: Twenty patients were participated in our study. All participants underwent facial salicylic acid 30% peel or microdermabrasion (10 cases in each group) weekly for 6 weeks...
February 22, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28228865/identification-of-beta-cell-dysfunction-at-the-pre-symptomatic-stage-of-diabetes-mellitus-by-novel-analytical-system-liquid-biopsy-measurements-in-femtograms
#3
REVIEW
Kurt Krapfenbauer
BACKGROUND: Diabetes mellitus is produced and progresses as a consequence of complex and gradual processes, in which a variety of alterations of the endocrine pancreas, are involved and which mainly result in beta cell failure. Those molecular alterations can be found in the bloodstream, which suggests that we could quantify specific biomarkers in plasma or serum by very sensitive methods before the onset diabetes mellitus is diagnosed. However, classical methods of protein analysis such as electrophoresis, Western blot, ELISA, and liquid chromatography are generally time-consuming, lab-intensive, and not sensitive enough to detect such alteration in a pre-symptomatic state of the disease...
December 2017: EPMA Journal
https://www.readbyqxmd.com/read/28228408/a-method-for-quantifying-limbal-stem-cell-niches-using-oct-imaging
#4
Michel Haagdorens, Joséphine Behaegel, Jos Rozema, Veerle Van Gerwen, Sofie Michiels, Sorcha Ní Dhubhghaill, Marie-José Tassignon, Nadia Zakaria
AIMS: To evaluate the efficacy of Fourier domain-optical coherence tomography (FD-OCT) in imaging and quantifying the limbal palisades of Vogt and to correlate these images with histological findings. METHODS: The superior and inferior limbal region of both eyes of 50 healthy volunteers were imaged by FD-OCT. Images were processed and analysed using Matlab software. In vitro immunofluorescent staining of a cadaveric donor limbus was analysed to correlate the presence of stem cells in the visualised structures...
February 22, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28228399/accumulation-of-worn-out-gbm-material-substantially-contributes-to-mesangial-matrix-expansion-in-diabetic-nephropathy
#5
Wilhelm Kriz, Jana Löwen, Giuseppina Federico, Jacob van den Born, Elisabeth Gröne, Hermann-Josef Gröne
Thickening of the glomerular basement membrane (GBM) and expansion of the mesangial matrix are hallmarks of diabetic nephropathy (DN) generally considered to emerge from different sites of overproduction; GBM components from podocytes and mesangial matrix from mesangial cells. Re-evaluation of 918 biopsies with DN revealed strong evidence that these mechanisms are connected to each other, wherein excess GBM components fail to undergo degradation and are deposited in the mesangium. These data do not exclude that also mesangial cells synthesize components that contribute to the accumulation of matrix in the mesangium...
February 22, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28226729/passive-artifact-behavior-prediction-of-interventional-tools-in-high-field-mri-using-a-0-55t-portable-benchtop-mr-scanner
#6
H Abadi, J Krug, A Illanes, M Friebe, H Abadi, J Krug, A Illanes, M Friebe, J Krug, M Friebe, A Illanes, H Abadi
Using magnetic resonance imaging (MRI) for guiding minimally invasive interventions requires surgical devices which on one hand are visible in the MR image but on the other hand do not generate large artifacts, which distort the overall imaging process. Passive markers are one way to visualize devices such as catheters or biopsy needles in MRI. The evaluation of newly developed passive markers usually requires access to high-field MRI scanners (1.5 T and 3 T). This makes the practical evaluation time-consuming and expensive...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226577/semi-advised-learning-model-for-skin-cancer-diagnosis-based-on-histopathalogical-images
#7
Ammara Masood, Adel Al-Jumaily, Ammara Masood, Adel Al-Jumaily, Ammara Masood, Adel Al-Jumaily
Computer aided classification of skin cancer images is an active area of research and different classification methods has been proposed so far. However, the supervised classification models based on insufficient labeled training data can badly influence the diagnosis process. To deal with the problem of limited labeled data availability this paper presents a semi advised learning model for automated recognition of skin cancer using histopathalogical images. Deep belief architecture is constructed using unlabeled data by making efficient use of limited labeled data for fine tuning done the classification model...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226529/shearlet-transform-a-good-candidate-for-compressed-sensing-in-optical-coherence-tomography
#8
Lesley-Ann Duflot, Alexandre Krupa, Brahim Tamadazte, Nicolas Andreff, Lesley-Ann Duflot, Alexandre Krupa, Brahim Tamadazte, Nicolas Andreff, Alexandre Krupa, Lesley-Ann Duflot, Brahim Tamadazte, Nicolas Andreff
This paper deals with the development of a fast and smart acquisition technique of Optical Coherence Tomography (OCT) data that has the capability to reconstruct missing data of OCT image. The main objective is to reduce the acquisition time (i.e., increase the frame rate) of an OCT-scan system by choosing a trajectory that covers entirely the image but that does not take all the measurements. The reconstruction of the missing data is achieved by applying an updated Fast Iterative Soft-Thresholding Algorithm (FISTA) on a sparse representation of the image...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226404/the-effect-of-cortex-medulla-proportions-on-molecular-diagnoses-in-kidney-transplant-biopsies-rejection-and-injury-can-be-assessed-in-medulla
#9
Katelynn S Madill-Thomsen, Roger C Wiggins, Farsad Eskandary, Georg A Böhmig, Philip F Halloran
Histologic assessment of kidney transplant biopsies relies on cortex rather than medulla, but for microarray studies, the proportion cortex in a biopsy is typically unknown and could affect the molecular readings. The present study aimed to develop a molecular estimate of proportion cortex in biopsies and examine its effect on molecular diagnoses. Microarrays from 26 kidney transplant biopsies divided into cortex and medulla components and processed separately showed that many of the most significant differences were in glomerular genes e...
February 22, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28225258/nanoparticle-based-discrimination-of-single-nucleotide-polymorphism-in-long-dna-sequences
#10
Maria Sanroman-Iglesias, Charles Lawrie, Luis M Liz-Marzán, Marek Grzelczak
Circulating DNA (ctDNA) and specifically the detection cancer-associated mutations in liquid biopsies promises to revolutionize cancer detection. The main difficulty however is that the length of typical ctDNA fragments (~150 bases) can form secondary structures potentially obscuring the mutated fragment from detection. We show that an assay based on gold nanoparticles (65 nm) stabilized with DNA (Au@DNA) can discriminate single nucleotide polymorphism in clinically-relevant DNA sequences (70-140 bases). The preincubation step was crucial to this process, allowing sequential bridging of Au@DNA, so that single base mutation can be discriminated, down to 100 pM concentration...
February 22, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28219585/urinary-type-iii-procollagen-is-associated-with-chronic-allograft-dysfunction-and-predicts-graft-survival
#11
R Yılmaz, T Yıldırım, D E Baydar, B Altun, Y Erdem
BACKGROUND: Chronic allograft dysfunction (CAD) is the most important clinical problem in solid organ transplantation. Interstitial fibrosis and tubular atrophy contribute to long-term renal allograft failure. Urinary type III procollagen N-terminal propeptide (PIIINP), has been shown to associate fibrotic processes. METHODS: One hundred sixty patients with CAD who underwent allograft biopsies were evaluated, and 52 patients with chronic or sclerosing allograft nephropathy were enrolled in the study...
March 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28219141/-significance-of-bacteria-detection-with-filter-paper-method-on-diagnosis-of-diabetic-foot-wound-infection
#12
X H Zou, Y P Zhu, G Q Ren, G C Li, J Zhang, L J Zou, Z B Feng, B H Li
Objective: To evaluate the significance of bacteria detection with filter paper method on diagnosis of diabetic foot wound infection. Methods: Eighteen patients with diabetic foot ulcer conforming to the study criteria were hospitalized in Liyuan Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology from July 2014 to July 2015. Diabetic foot ulcer wounds were classified according to the University of Texas diabetic foot classification (hereinafter referred to as Texas grade) system, and general condition of patients with wounds in different Texas grade was compared...
February 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28218198/harmonic-contrast-enhanced-endoscopic-ultrasound-fine-needle-aspiration-fact-or-fiction
#13
REVIEW
Andrada Seicean, Mariana Jinga
The negative predictive value of endoscopic ultrasonography fine-needle aspiration is relatively low. To achieve the improvement of the diagnostic yield, the following were proposed: a higher number of passes, the presence of the rapid on-site cytopathologist evaluation, the fanning technique, or the repetition of the fine needle biopsy. Harmonic contrast-enhanced endosonography may better identify the targeted area in the lesions by avoiding the inside necrosis and the vessels of fibrosis, so it can guide the fine-needle aspiration...
January 2017: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/28217949/clinical-impact-of-the-presence-of-macrophages-in-endomyocardial-biopsies-of-patients-with-dilated-cardiomyopathy
#14
Takafumi Nakayama, Yasuo Sugano, Tetsuro Yokokawa, Toshiyuki Nagai, Taka-Aki Matsuyama, Keiko Ohta-Ogo, Yoshihiko Ikeda, Hatsue Ishibashi-Ueda, Takeshi Nakatani, Nobuyuki Ohte, Satoshi Yasuda, Toshihisa Anzai
BACKGROUND: Dilated cardiomyopathy (DCM) is the most common cardiomyopathy and causes left ventricular enlargement and contractile dysfunction, with a poor prognosis. The mechanisms underlying the disease process have not been precisely identified, but recent evidence has suggested that the activation of myocardial inflammation is involved in the deterioration associated with the condition. METHODS AND RESULTS: Biopsy samples from 182 consecutive DCM patients were immunohistochemically stained with antibodies specific to CD3 (T lymphocytes), CD68 (whole macrophages), and CD163 (M2 macrophages), and each type of infiltrating cell was counted...
February 20, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28215970/the-role-of-exosomes-in-cancer-metastasis
#15
REVIEW
Teresa Bernadette Steinbichler, József Dudás, Herbert Riechelmann, Ira-Ida Skvortsova
Exosomes are small membrane vesicles with a size ranging from 40-100nm. They can serve as functional mediators in cell interaction leading to cancer metastasis. Metastasis is a complex multistep process of cancer cell invasion, survival in blood vessels, attachment to and colonization of the host organ. Exosomes influence every step of this cascade and can be targeted by oncological treatment. This review highlights the role of exosomes in the various steps of the metastatic cascade and how exosome dependent pathways can be targeted as therapeutic approach or used for liquid biopsies...
February 12, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28215897/effects-of-body-condition-monensin-and-essential-oils-on-ruminal-lipopolysaccharide-concentration-inflammatory-markers-and-endoplasmatic-reticulum-stress-of-transition-dairy-cows
#16
C Drong, S Bühler, J Frahm, L Hüther, U Meyer, D von Soosten, D K Gessner, K Eder, H Sauerwein, S Dänicke
Evidence exists that dairy cows experience inflammatory-like phenomena in the transition period. Rumen health and alterations in metabolic processes and gene networks in the liver as the central metabolic organ might be key factors for cows' health and productivity in early lactation. This study made use of an animal model to generate experimental groups with different manifestations of postpartal fat mobilization and ketogenesis. In total, 60 German Holstein cows were allocated 6 wk antepartum to 3 high-body condition score (BCS) groups (BCS 3...
February 16, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28214967/increased-atrial-%C3%AE-adrenergic-receptors-and-grk-2-gene-expression-can-play-a-fundamental-role-in-heart-failure-after-repair-of-congenital-heart-disease-with-cardiopulmonary-bypass
#17
Marcela Silva Oliveira, Fabio Carmona, Walter V A Vicente, Paulo H Manso, Karina M Mata, Mara Rúbia Celes, Erica C Campos, Simone G Ramos
Surgeries to correct congenital heart diseases are increasing in Brazil and worldwide. However, even with the advances in surgical techniques and perfusion, some cases, especially the more complex ones, can develop heart failure and death. A retrospective study of patients who underwent surgery for correction of congenital heart diseases with cardiopulmonary bypass (CPB) in a university tertiary-care hospital that died, showed infarction in different stages of evolution and scattered microcalcifications in the myocardium, even without coronary obstruction...
February 18, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28213554/hypoxia-selectively-enhances-integrin-receptor-expression-to-promote-metastasis
#18
Julia A Ju, Ines Godet, I Chae Ye, Jungmin Byun, Hasini Jayatilaka, Sun Joo Lee, Lisha Xiang, Debangshu Samanta, Meng Horng Lee, Pei-Hsun Wu, Denis Wirtz, Gregg L Semenza, Daniele M Gilkes
: Metastasis is the leading cause of breast cancer (BCa)mortality. Previous studies have implicated hypoxia-induced changes in the composition and stiffness of the extracellular matrix (ECM) in the metastatic process. Therefore, the contribution of potential ECM binding receptors in this process was explored. Using a bioinformatics approach the expression of all integrin receptor subunits, in two independent BCa patient data sets, were analyzed to determine if integrin status correlates with a validated hypoxiainducible gene signature...
February 17, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28212714/droplet-based-digital-pcr-application-in-cancer-research
#19
G Perkins, H Lu, F Garlan, V Taly
The efficient characterization of genetic and epigenetic alterations in oncology, virology, or prenatal diagnostics requires highly sensitive and specific high-throughput approaches. Nevertheless, with the use of conventional methods, sensitivity and specificity were largely limited. By partitioning individual target molecules within distinct compartments, digital PCR (dPCR) could overcome these limitations and detect very rare sequences with unprecedented precision and sensitivity. In dPCR, the sample is diluted such that each individual partition will contain no more than one target sequence...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28212452/bone-to-implant-contact-and-new-bone-formation-within-human-freeze-dried-bone-blocks-grafted-over-rabbit-calvaria
#20
Zvi Artzi, Karen Anavi-Lev, Avital Kozlovsky, Liat Chaushu, Frank Schwarz, Haim Tal
PURPOSE: To assess the extent of osseointegration with rough-surface implants and new bone formation (NBF) within human freeze-dried bone blocks (h-FDB) grafted over rabbit calvaria. MATERIALS AND METHODS: A total of 18 rectangular h-FDB blocks were stabilized bilaterally to the calvaria of nine New Zealand rabbits by two mini titanium screws each. A total of 18 rough-surface implants (5.0 × 6.0-mm) were placed, 9 simultaneously (immediate placement [IP]) on one side and 9 at 3 months after block grafting (delayed placement [DP]) on the contralateral side...
February 17, 2017: International Journal of Oral & Maxillofacial Implants
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