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Tissue Procurement

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https://www.readbyqxmd.com/read/28899664/implant-for-autologous-soft-tissue-reconstruction-using-an-adipose-derived-stem-cell-colonized-alginate-scaffold
#1
Tobias Hirsch, Christine Laemmle, Bjoern Behr, Marcus Lehnhardt, Frank Jacobsen, Dirk Hoefer, Maximilian Kueckelhaus
BACKGROUND: Adipose-derived stem cells represent an interesting option for soft tissue replacement as they are easy to procure and can generate their own blood supply through the production of angiogenic factors. We seeded adipose-derived stem cells on a bioresorbable, biocompatible polymer alginate scaffold to generate autologous soft tissue constructs for repair. MATERIALS AND METHODS: We built and optimized an alginate scaffold and tested its biocompatibility using the MTT assay and its hydration capacity...
August 16, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28892876/effect-of-radiofrequency-radiation-emitted-from-2g-and-3g-cell-phone-on-developing-liver-of-chick-embryo-a-comparative-study
#2
Mary Hydrina D'Silva, Rijied Thompson Swer, J Anbalagan, Bhargavan Rajesh
INTRODUCTION: The increasing scientific evidence of various health hazards on exposure of Radiofrequency Radiation (RFR) emitted from both the cell phones and base stations have caused significant media attention and public discussion in recent years. The mechanism of interaction of RF fields with developing tissues of children and fetuses may be different from that of adults due to their smaller physical size and variation in tissue electromagnetic properties. The present study may provide an insight into the basic mechanisms by which RF fields interact with developing tissues in an embryo...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28882119/aggregation-prone-gfap-mutation-in-alexander-disease-validated-using-a-zebrafish-model
#3
So-Hyun Lee, Tai-Seung Nam, Kun-Hee Kim, Jin Hee Kim, Woong Yoon, Suk-Hee Heo, Min Jung Kim, Boo Ahn Shin, Ming-Der Perng, Hyon E Choy, Jihoon Jo, Myeong-Kyu Kim, Seok-Yong Choi
BACKGROUND: Alexander disease (AxD) is an astrogliopathy that predominantly affects the white matter of the central nervous system (CNS), and is caused by a mutation in the gene encoding the glial fibrillary acidic protein (GFAP), an intermediate filament primarily expressed in astrocytes and ependymal cells. The main pathologic feature of AxD is the presence of Rosenthal fibers (RFs), homogeneous eosinophilic inclusions found in astrocytes. Because of difficulties in procuring patient' CNS tissues and the presence of RFs in other pathologic conditions, there is a need to develop an in vivo assay that can determine whether a mutation in the GFAP results in aggregation and is thus disease-causing...
September 7, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28836741/quantification-and-neurochemical-coding-of-the-myenteric-plexus-in-humans-no-regional-variation-between-the-distal-colon-and-rectum
#4
K-S Ng, N A Montes-Adrian, D A Mahns, M A Gladman
BACKGROUND: It remains unclear whether regional variation exists in the human enteric nervous system (ENS) ie, whether intrinsic innervation varies along the gut. Recent classification of gastrointestinal neuropathies has highlighted inadequacies in the quantification of the human ENS. This study used paired wholemounts to accurately quantify and neurochemically code the hindgut myenteric plexus, comparing human distal colon and rectum. METHODS: Paired human descending colonic/rectal specimens were procured from 15 patients undergoing anterior resection...
August 24, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28836520/performance-of-a-new-needle-for-endoscopic-ultrasound-guided-fine-needle-biopsy-in-patients-with-pancreatic-solid-lesions-a-retrospective-multicenter-study
#5
Roberto Di Mitri, Mihai Rimbaş, Fabia Attili, Carlo Fabbri, Silvia Carrara, Luca Di Maurizio, Frediano Inzani, Alessandro Repici, Antonio Gasbarrini, Guido Costamagna, Alberto Larghi
BACKGROUND AND OBJECTIVES: Procurement of tissue core biopsy samples may overcome some of the limitations of endoscopic ultrasound (EUS)-guided fine-needle aspiration. We aimed at assessing the safety, histological sample procurement yield, and diagnostic accuracy of a newly available histology needle. MATERIALS AND METHODS: Data from consecutive patients with pancreatic solid lesions who underwent EUS-fine needle biopsy (EUS-FNB) using the 22-gauge Acquire™ needle were retrospectively retrieved from four tertiary care centers database...
August 24, 2017: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/28817123/evaluation-of-telomere-length-in-human-cardiac-tissues-using-cardiac-quantitative-fish
#6
Maryam Sharifi-Sanjani, Alan K Meeker, Foteini Mourkioti
Telomere length has been correlated with various diseases, including cardiovascular disease and cancer. The use of currently available telomere-length measurement techniques is often restricted by the requirement of a large amount of cells (Southern-based techniques) or the lack of information on individual cells or telomeres (PCR-based methods). Although several methods have been used to measure telomere length in tissues as a whole, the assessment of cell-type-specific telomere length provides valuable information on individual cell types...
September 2017: Nature Protocols
https://www.readbyqxmd.com/read/28768889/decoupled-diversification-dynamics-of-feeding-morphology-following-a-major-functional-innovation-in-marine-butterflyfishes
#7
Nicolai Konow, Samantha Price, Richard Abom, David Bellwood, Peter Wainwright
The diversity of fishes on coral reefs is influenced by the evolution of feeding innovations. For instance, the evolution of an intramandibular jaw joint has aided shifts to corallivory in Chaetodon butterflyfishes following their Miocene colonization of coral reefs. Today, over half of all Chaetodon species consume coral, easily the largest concentration of corallivores in any reef fish family. In contrast with Chaetodon, other chaetodontids, including the long-jawed bannerfishes, remain less intimately associated with coral and mainly consume other invertebrate prey...
August 16, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28752846/the-identification-of-challenges-in-tissue-collection-for-biomarker-studies-the-q-croc-03-neoadjuvant-breast-cancer-translational-trial-experience
#8
Adriana Aguilar-Mahecha, Josiane Lafleur, Manuela Pelmus, Carole Seguin, Cathy Lan, Federico Discepola, Bojan Kovacina, Rosa Christodoulopoulos, Ombretta Salvucci, Catalin Mihalcioiu, Josée-Anne Roy, André Robidoux, Elizabeth A Marcus, Gerald Batist, Mark Basik
One of the major challenges in biomarker development is the collection of tumor tissue of adequate quality for analysis. A prospective clinical trial was initiated to collect tissues from triple negative breast cancers prior to and after neoadjuvant chemotherapy in order to study the mechanisms of chemoresistance. Sixty patients had pre-chemotherapy biopsies performed by either a surgeon or a radiologist, while those with residual tumor after chemotherapy had research-only biopsies and/or surgical samples collected in liquid nitrogen, RNA-later and formalin...
July 28, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28742686/bioengineering-a-human-face-graft-the-matrix-of-identity
#9
Jérôme Duisit, Louis Maistriaux, Adriano Taddeo, Giuseppe Orlando, Virginie Joris, Emmanuel Coche, Catherine Behets, Jan Lerut, Chantal Dessy, Giulio Cossu, Esther Vögelin, Robert Rieben, Pierre Gianello, Benoît Lengelé
OBJECTIVE: During the last decade, face allotransplantation has been shown to be a revolutionary reconstructive procedure for severe disfigurements. However, offer to patients remains limited due to lifelong immunosuppression. To move forward in the field, a new pathway in tissue engineering is proposed. BACKGROUND: Our previously reported technique of matrix production of a porcine auricular subunit graft has been translated to a human face model. METHODS: 5 partial and 1 total face grafts were procured from human fresh cadavers...
July 24, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28741700/financial-aspects-of-organ-procurement-from-deceased-donors-in-the-usa-relevance-to-xenotransplantation
#10
REVIEW
Ryan J Saari, David K C Cooper
When clinical xenotransplantation is introduced, the costs associated with acquisition of a genetically engineered pig organ are as yet unknown. How will these costs compare with those currently associated with the acquisition of deceased human organs? An understanding of the financial aspects of deceased organ and tissue procurement in the USA is therefore worthwhile. We have therefore attempted to review certain economic aspects of non-profit and for-profit organizations that provide cadaveric organs and/or tissues for purposes of transplantation into patients with end-stage organ failure, cellular deficiencies, or in need of reconstructive procedures...
July 2017: Xenotransplantation
https://www.readbyqxmd.com/read/28725172/an-original-and-effective-technique-to-improve-exposure-in-open-surgery
#11
E Nohuz, G Chêne
BACKGROUND: Exposure, especially when the organs are enlarged, remains one of the most important issue in open surgery. Considering this constraint appears critical in the progress of the surgical procedure. We highlight our technique which affords optimal exposure and improves manipulation and extraction of enlarged organs. RESULTS: This original and effective technique is derived from an obstetrical device used to perform an assisted vaginal delivery. It improves exposure, reduces tissue manipulation, and enhances removal of the surgical specimen during hysterectomies and myomectomies...
2017: Gynecological Surgery
https://www.readbyqxmd.com/read/28713964/musashi1-a-potential-prognostic-marker-in-esophageal-squamous-cell-carcinoma
#12
Guohui Qin, Jingyao Lian, Dongli Yue, Xinfeng Chen, Shufeng Nan, Yu Qi, Bing Li, Guanghui Cui, Xiangnan Li, Song Zhao, Yi Zhang
Esophageal cancer ranks as the sixth leading cause of cancer-related deaths worldwide. Cancer stemness is mainly considered to be the key factor for cancer recurrence particularly in esophageal cancer. It is important to identify cancer stem cell markers as targets in future therapies. The present study aimed to investigate the expression of putative cancer stem cell-related marker musashi1 (Msi1) and assess the correlation with clinicopathologcal status of esophageal squamous cell carcinoma (ESCC) cases. We then clarified the role of Msi1 in esophageal cancer cells during proliferation, apoptosis, sphere formation and migration...
July 12, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28691333/treatment-of-cervical-intraepithelial-lesions
#13
Philip E Castle, Dan Murokora, Carlos Perez, Manuel Alvarez, Swee Chong Quek, Christine Campbell
Precancerous cervical lesions precede the development of invasive cervical cancer by 10-20 years, making cervical cancer preventable if these lesions are detected and effectively treated. Treatment has evolved in the last few decades and now includes ablative options that can be performed in lower-resource settings where surgical excision is not feasible or routinely available. Gas-based cryotherapy, which freezes cervical tissue to induce localized necrosis, is the most commonly used ablative treatment. However, its implementation in low-resource settings is difficult because the refrigerant gas can be difficult to procure and transport, and is expensive...
July 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28658200/critical-ischemia-times-and-the-effect-of-novel-preservation-solutions-htk-n-and-tiprotec-on-tissues-of-a-vascularized-tissue-isograft
#14
Franka Messner, Theresa Hautz, Michael J F Blumer, Mario Bitsche, Elisabeth J Pechriggl, Martin Hermann, Bettina Zelger, Bernhard Zelger, Dietmar Öfner, Stefan Schneeberger
BACKGROUND: We herein investigate critical ischemia times and the effect of novel preservation solutions such as new histidine-tryptophan-ketoglutarate (HTK-N) and TiProtec on the individual tissues of a rat limb isograft. METHODS: Orthotopic hind-limb transplantations were performed in male Lewis rats after 2 hours, 6 hours, or 10 hours of cold ischemia (CI). Limbs were flushed and stored in HTK-N, TiProtec, HTK, or saline solution. Muscle, nerve, vessel, skin, and bone samples were procured on day 10 for histology, immunohistochemistry, confocal and electron microscopy, and quantitative real-time polymerase chain reaction analysis...
September 2017: Transplantation
https://www.readbyqxmd.com/read/28643729/differential-diagnoses-of-elevated-lesions-of-the-upper-lip-an-overview
#15
REVIEW
Gowri Pandarinath Bhandarkar, Kushal Vasanth Shetty
This paper comes with a purpose to help the clinician as how to arrive at a logical differential diagnosis when an upper lip mass is encountered in day-to-day practice. The labial mucosa is commonly traumatized. One must be aware of the type of structures contained in the mucosa of the area of a lesion as well as the patients habits since they may relate to a lesion presented for diagnosis. It also helps them to procure a sound knowledge of the lesions by describing the lesions according to their clinical appearance and to aid the clinician in arriving at a differential diagnosis by considering that certain lesions have a predilection for the upper lip...
April 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28643577/an-assessment-of-advance-relatives-approach-for-brain-death-organ-donation
#16
Carine Michaut, Antoine Baumann, Hélène Gregoire, Corinne Laviale, Gérard Audibert, Xavier Ducrocq
BACKGROUND: Advance announcement of forthcoming brain death has developed to enable intensivists and organ procurement organisation coordinators to more appropriately, and separately from each other, explain to relatives brain death and the subsequent post-mortem organ donation opportunity. Research aim: The aim was to assess how potentially involved healthcare professionals perceived ethical issues surrounding the strategy of advance approach. RESEARCH DESIGN: A multi-centre opinion survey using an anonymous self-administered questionnaire was conducted in the six-member hospitals of the publicly funded East of France regional organ and tissue procurement network called 'Prélor'...
January 1, 2017: Nursing Ethics
https://www.readbyqxmd.com/read/28638457/upregulation-of-coxsackie-adenovirus-receptor-sensitizes-cisplatin-resistant-lung-cancer-cells-to-crad-induced-inhibition
#17
Ali Sakhawat, Yanan Liu, Ling Ma, Tahir Muhammad, Shensen Wang, Lina Zhang, Xianling Cong, Yinghui Huang
Objective. Conditionally replicating adenoviruses (CRAds) have been proven potent oncolytic viruses in previous studies. They selectively replicate in the tumor cells because of incorporated survivin promoter and ultimately lead to their killing with minimal side effects on normal tissue. Chemotherapy with cisplatin is commonly employed for treating tumors, but its cytotoxic effects and development of resistance remained major concerns to be dealt with. The aim of this study was to explore the anticancer potential of survivin regulated CRAd alone or in combination with cisplatin in the A549 lung cancer cell line and cisplatin-resistant lung cancer cell line, A549-DDPR...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28615040/immunohistochemical-and-immunocytochemical-study-of-mechanoreceptors-in-anterior-cruciate-ligament-reconstruction-with-the-remnant-preserving-technique-using-achilles-tendon-allografts
#18
Keun Churl Chun, Sung Hyun Lee, Jeong Woo Kim, Eun Jung Jin, Kwang Mee Kim, Churl Hong Chun
BACKGROUND: Attempts have been made to validate the significance of remnant preservation with anterior cruciate ligament (ACL) reconstruction using immunohistochemical and immunocytochemical techniques. The purpose of this study was to examine the expression of mechanoreceptors in the remnant tissue of ACL reconstruction performed with the remnant-preserving technique. METHODS: Tissue samples were obtained from 10 patients who underwent ACL reconstruction with the remnant-preserving technique...
June 14, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28609003/preanalytic-specimen-triage-smears-cell-blocks-cytospin-preparations-transport-media-and-cytobanking
#19
REVIEW
Gilda da Cunha Santos, Mauro A Saieg
With increasing requests for the evaluation of prognostic and predictive molecular biomarkers, great attention must be paid to the preanalytical issues regarding sample quality and DNA/RNA yield from all different types of cytological preparations. The objectives of this review were: 1) to provide an update regarding the importance of specimen triage as well as specimen handling and collection; 2) to discuss the different cell preparations that can be used for molecular testing, their advantages and limitations; and 3) to highlight the strategies for biobanking cytology samples...
June 2017: Cancer
https://www.readbyqxmd.com/read/28602017/design-and-evaluation-of-artificial-cornea-with-core-skirt-design-using-polyhydroxyethyl-methacrylate-and-graphite
#20
Mukty Sinha, Tanvi Gupte
PURPOSE: Artificial cornea is the effective treatment option for corneal blindness. One of the challenges with the artificial cornea is limited, or no tissue integration necessitates reimplantation due to necrosis or corneal melting. We propose here a new formulation approach for core-skirt incorporating graphite in the outer skirt region to improve cell adhesion. METHODS: Hydroxyethyl methacrylate (HEMA) and ethylene glycol dimethacrylate were procured from Sigma-Aldrich...
June 10, 2017: International Ophthalmology
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