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https://www.readbyqxmd.com/read/28198009/endoscopic-ultrasound-guided-fine-needle-aspirate-derived-preclinical-pancreatic-cancer-models-reveal-panitumumab-sensitivity-in-kras-wild-type-tumours
#1
William Berry, Elizabeth Algar, Beena Kumar, Christopher Desmond, Michael Swan, Brendan J Jenkins, Daniel Croagh
Pancreatic cancer (PC) is largely refractory to existing therapies used in unselected patient trials, thus emphasizing the pressing need for new approaches for patient selection in personalized medicine. KRAS mutations occur in 90% of PC patients and confer resistance to epidermal growth factor receptor (EGFR) inhibitors (e.g. panitumumab), suggesting that KRAS wild-type PC patients may benefit from targeted panitumumab therapy. Here we use tumour tissue procured by endoscopic ultrasound-guided fine-needle aspirate (EUS-FNA) to compare the in vivo sensitivity in patient derived xenografts (PDXs) of KRAS wild-type and mutant PC tumours to panitumumab, and to profile the molecular signature of these tumours in patients with metastatic or localized disease...
February 15, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28188872/pre-transplantation-31-p-magnetic-resonance-spectroscopy-for-quality-assessment-of-human-pancreatic-grafts-a-feasibility-study
#2
Lina Carlbom, Jan Weis, Lars Johansson, Olle Korsgren, Håkan Ahlström
OBJECTIVE: To investigate the feasibility of using (31)P-MRS for objective non-invasive quality assessment of human pancreas grafts prior to transplantation or islet isolation. MATERIALS AND METHODS: Pancreata from 5 human donors, 3 males and 2 females, aged 49-78years, with body mass index (BMI) 22-31kg/m(2), were included. Pancreata were perfused with histidine-tryptophan-ketoglutarate solution during procurement and stored in hypothermic condition (4°C) for 21-44h...
February 8, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28183047/gene-expression-changes-in-colon-tissues-from-colorectal-cancer-patients-following-the-intake-of-an-ellagitannin-containing-pomegranate-extract-a-randomized-clinical-trial
#3
María A Nuñez-Sánchez, Antonio González-Sarrías, Rocío García-Villalba, Tamara Monedero-Saiz, Noelia V García-Talavera, María B Gómez-Sánchez, Carmen Sánchez-Álvarez, Ana M García-Albert, Francisco J Rodríguez-Gil, Miguel Ruiz-Marín, Francisco A Pastor-Quirante, Francisco Martínez-Díaz, Francisco A Tomás-Barberán, Juan Carlos Espín, María-Teresa García-Conesa
The clinical evidence of dietary polyphenols as colorectal cancer (CRC) chemopreventive compounds is very weak. Verification in humans of tissue-specific molecular regulation by the intake of polyphenols requires complex clinical trials that allow for the procurement of sufficient pre- and postsupplementation tissue samples. Ellagitannins (ETs), ellagic acid (EA) and their gut microbiota-derived metabolites, the urolithins, modify gene expression in colon normal and cancer cultured cells. We conducted here the first clinical trial with 35 CRC patients daily supplemented with 900 mg of an ET-containing pomegranate extract (PE) and evaluated the expression of various CRC-related genes in normal and cancerous colon tissues before (biopsies) and after (surgical specimens) 5-35 days of supplementation...
January 27, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28168823/opo-strategies-to-prevent-unintended-use-of-kidneys-exported-for-high-pra-98-cpra-recipients
#4
A S Paramesh, N Neidlinger, M Salvatore, A Smith, A Friedman, W Payne, T Taber, C Wright
Since the advent of the Kidney Allocation System (KAS), matched candidates with high (>98%) panel reactive antibody (hPRA) are given priority over local candidates with lower PRA. This often leads to exporting of kidneys. Data for these kidneys is not detailed on routine reports. Twenty two organ procurement organizations prospectively submitted data from 8/2015 - 7/2016, describing allocation practices of kidneys to hPRA patients and outcomes of these kidneys. 520 out of 6924 procured kidneys were exported for hPRA recipients...
February 6, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28164608/alterations-of-vitamin-d-receptor-vdr-expression-profile-in-normal-and-malignant-breast-tissues
#5
Naghmeh Zhalehjoo, Yadollah Shakiba, Mojtaba Panjehpour
BACKGROUND: The actions of Vitamin D in different tissues, including breast tissue, are mediated by vitamin D receptor (VDR). Vitamin D has antitumor functions in the body; any changes in VDR expression can therefore affect the anticancer activities of Vitamin D. The present study was conducted to compare expression levels of VDR mRNA and protein in normal and tumor breast tissues. METHODS: Tumor and adjacent normal tissue samples from 30 patients with breast cancer were procured from the Iran National Tumor Bank of the Cancer Institute...
August 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28131864/comparison-of-fine-needle-aspiration-and-fine-needle-biopsy-for-eus-guided-sampling-of-suspected-gi-stromal-tumors
#6
Abdul Hamid El Chafic, David Loren, Ali Siddiqui, Rawad Mounzer, Natalie Cosgrove, Thomas Kowalski
BACKGROUND AND AIM: Subepithelial lesions (SEL) are found in about 1% of all esophagogastroduodenoscopy (EGD) procedures, and GI stromal tumors (GISTs) are a type of SEL commonly encountered. Although the majority of SELs are benign, GISTs have malignant potential, making a definitive diagnosis important. Currently, the criterion standard for the diagnosis of GISTs is EUS-directed fine-needle aspiration (EUS-FNA). The definitive diagnosis of GISTs relies upon immunohistochemical (IHC) staining, which depends on enough tissue being submitted to the pathologist...
January 25, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28123277/can-lip-prints-provide-biologic-evidence
#7
Preeti Sharma, Neeraj Sharma, Vijay Wadhwan, Pooja Aggarwal
BACKGROUND: Lip prints are unique and can be used in personal identification. Very few studies are available which establish them as biological evidence in the court of law. Thus, the objective of this study was to attempt to isolate DNA and obtain full short tandem repeat (STR) loci of the individual from the lip prints on different surfaces. MATERIALS AND METHODS: Twelve lip prints were procured on different surfaces such as tissue paper, cotton cloth, ceramic tile, and glass surface...
September 2016: Journal of Forensic Dental Sciences
https://www.readbyqxmd.com/read/28121471/confidentiality-in-biobanking-research-a-comparison-of-donor-and-nondonor-families-understanding-of-risks
#8
Laura A Siminoff, Maureen Wilson-Genderson, Maghboeba Mosavel, Laura Barker, Jennifer Trgina, Heather M Traino
AIMS: Confidentiality of personal identifiers potentially linking the genetic results from biobanking participants back to the donor and donor relatives is a concern. The risks associated with a breach of confidentiality should be ascertained when biobanks collect samples requiring the consent of a family decision maker (FDM) from deceased organ and tissue donors. This article explores FDM knowledge and opinions regarding risks associated with participation in biobanking research in the context of the Genotype-Tissue Expression (GTEx) Project...
January 25, 2017: Genetic Testing and Molecular Biomarkers
https://www.readbyqxmd.com/read/28071246/family-perspectives-on-organ-and-tissue-donation-for-transplantation-a-principlist-analysis
#9
Marcelo José Dos Santos, Lydia Feito
BACKGROUND: The family interview context is permeated by numerous ethical issues which may generate conflicts and impact on organ donation process. OBJECTIVE: This study aims to analyze the family interview process with a focus on principlist bioethics. METHOD: This exploratory, descriptive study uses a qualitative approach. The speeches were collected using the following prompt: "Talk about the family interview for the donation of organs and tissues for transplantation, from the preparation for the interview to the decision of the family to donate or not...
January 1, 2017: Nursing Ethics
https://www.readbyqxmd.com/read/28060077/ethical-issues-in-transnational-eye-banking
#10
Dominique E Martin, Richard Kelly, Gary L A Jones, Heather Machin, Graeme A Pollock
PURPOSE: To review ethical issues that may arise in the setting of transnational eye banking activities, such as when exporting or importing corneal tissue for transplantation. METHODS: A principle-based normative analysis of potential common dilemmas in transnational eye banking activities was performed. RESULTS: Transnational activities in eye banking, like those in other fields involving procurement and use of medical products of human origin, may present a number of ethical issues for policy makers and professionals...
February 2017: Cornea
https://www.readbyqxmd.com/read/28058213/face-transplantation-anesthetic-challenges
#11
REVIEW
Aparna Dalal
Face transplantation is a complex vascular composite allotransplantation (VCA) surgery. It involves multiple types of tissue, such as bone, muscles, blood vessels, nerves to be transferred from the donor to the recipient as one unit. VCAs were added to the definition of organs covered by the Organ Procurement and Transplantation Network Final Rule and National Organ Transplant Act. Prior to harvest of the face from the donor, a tracheostomy is usually performed. The osteotomies and dissection of the midface bony skeleton may involve severe hemorrhagic blood loss often requiring transfusion of blood products...
December 24, 2016: World Journal of Transplantation
https://www.readbyqxmd.com/read/28045778/a-14-year-audit-and-analysis-of-human-skin-allograft-discards
#12
Jordan Spradbrow, Matthew Etchells, Robert Cartotto, Alison Halliday, Yulia Lin, Andrew Simor, Raj Visvalingam, Jeannie Callum
The objective of this study was to review the incidence of skin allograft discard and bacterial contamination due to donor bioburden at the Ontario Professional Firefighters Skin Bank over a 14-year period. We sought to determine whether modifications to our prerecovery donor preparation process have been effective in reducing skin bioburden and identify other potential risk factors of allograft contamination. A retrospective review of all skin donors (n = 259) processed from 2002 to 2015 was performed. Multivariate logistic regression was used to determine whether donor-related factors and procurement-related factors were significantly associated with microbial contamination predisinfection and discard secondary to contamination...
December 30, 2016: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28017811/use-of-fitc-inulin-as-a-marker-for-intestinal-ischemic-injury
#13
Abedalrazaq AlKukhun, Giorgio Caturegli, Armando Salim Munoz-Abraham, Sami Judeeba, Roger Patron-Lozano, Raffaella Morotti, Manuel I Rodriguez-Davalos, John P Geibel
BACKGROUND: Intestinal ischemia is observed in conditions such as mesenteric ischemia, or during traumatic events such as intestinal transplantation. Intestinal ischemia leads to pathophysiological disruptions that present as increased fluid secretion into the intestinal lumen. We propose a novel method to detect real-time ischemic injury that is employed in an in vitro model that is applicable to intestinal transplantation. STUDY DESIGN: Small intestine segments from rats were procured...
December 22, 2016: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28005098/allografts-for-ligament-reconstruction-where-are-we-now
#14
REVIEW
Frank B Wydra, Philip J York, Christopher R Johnson, Lorenzo Silvestri
The use of musculoskeletal allografts by orthopedic surgeons continues to rise. The process of procuring and sterilizing allografts is evolving with much consideration to limiting the spread of infectious diseases and preserving tissue integrity. Research involving the application of allografts, particularly for ligament repair, is quite active, necessitating an update for the practicing orthopedist. Avoiding donor site morbidities is one of the most commonly cited advantages of allografts over autografts. There is controversy amongst studies for allografts in terms of their biological incorporation and clinical outcomes compared to autografts...
November 2016: American Journal of Orthopedics
https://www.readbyqxmd.com/read/27982363/-efficiency-indicators-to-assess-the-organ-donation-and-transplantation-process-systematic-review-of-the-literature
#15
Marina Martins Siqueira, Claudia Affonso Araujo, Bartira de Aguiar Roza, Janine Schirmer
Objective: To search the literature and identify indicators used to monitor and control the organ donation and transplantation process and to group these indicators into categories. Method: In November 2014, a systematic review of the literature was carried out in the following databases: Biblioteca Virtual em Saúde (BVS), EBSCO, Emerald, Proquest, Science Direct, and Web of Science. The following search terms (and the corresponding terms in Brazilian Portuguese) were employed: "efficiency," "indicators," "organ donation," "tissue and organ procurement," and "organ transplantation...
August 2016: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
https://www.readbyqxmd.com/read/27939038/novel-technique-for-harvesting-the-sternoclavicular-graft
#16
Sujata Mohanty, Sanchaita Kohli, Jitender Dabas, Chandravir Singh
PURPOSE: Originally introduced for mandibular reconstruction more than 40 years ago, the sternoclavicular graft (SCG) has gained widespread popularity for the reconstruction of the ramus-condyle unit (RCU) owing to its anatomic and histological likeness to the normal mandibular condyle. Conventional longitudinal osteotomy design for its harvest has been fraught with considerable complications at the donor site including fracture clavicle and major neurovascular injury. In an attempt to alleviate these ill effects, a new technique for procuring the sternoclavicular graft is presented...
November 19, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27924070/modified-methods-for-isolation-of-pancreatic-stellate-cells-from-human-and-rodent-pancreas
#17
Liangtao Zhao, Baobao Cai, Zipeng Lu, Lei Tian, Song Guo, Pengfei Wu, Dong Qian, Qingcheng Xu, Kuirong Jiang, Yi Miao
Primary cultures of pancreatic stellate cells (PSCs) remain an important basis for in vitro study. However, effective methods for isolating abundant PSCs are currently lacking. We report on a novel approach to isolating PSCs from normal rat pancreases and human pancreatic ductal adenocarcinoma (PDAC) tissue. After anaesthesia and laparotomy of the rat, a blunt cannula was inserted into the pancreatic duct through the anti-mesentery side of the duodenum, and the pancreas was slowly infused with an enzyme solution until all lobules were fully dispersed...
November 2016: Journal of Biomedical Research
https://www.readbyqxmd.com/read/27918354/ethical-issues-in-transnational-eye-banking
#18
Dominique E Martin, Richard Kelly, Gary L A Jones, Heather Machin, Graeme A Pollock
PURPOSE: To review ethical issues that may arise in the setting of transnational eye banking activities, such as when exporting or importing corneal tissue for transplantation. METHODS: A principle-based normative analysis of potential common dilemmas in transnational eye banking activities was performed. RESULTS: Transnational activities in eye banking, like those in other fields involving procurement and use of medical products of human origin, may present a number of ethical issues for policy makers and professionals...
December 1, 2016: Cornea
https://www.readbyqxmd.com/read/27908471/-removal-and-transplant-synchronised-surgical-procedures
#19
Jacques Hubert, Luc Frimat
Since 2001, the team of the organ and tissue procurement unit of Nancy general hospital has practised the minimally invasive laparoscopic organ removal procedure through robot-assisted surgery. Here the team shares its expertise in the area of kidney removal from a living donor. Perfectly synchronised with the procedure of the team in charge of the transplant, the surgical stages are carried out in sequence ensuring optimal safety for the donor and recipient.
December 2016: Revue de L'infirmière
https://www.readbyqxmd.com/read/27879599/total-human-eye-allotransplantation-developing-surgical-protocols-for-donor-and-recipient-procedures
#20
Edward H Davidson, Eric W Wang, Jenny Y Yu, Juan C Fernandez-Miranda, Dawn J Wang, Nikisha Richards, Maxine Miller, Joel S Schuman, Kia M Washington
BACKGROUND: Vascularized composite allotransplantation of the eye is an appealing, novel method for reconstruction of the nonfunctioning eye. The authors' group has established the first orthotopic model for eye transplantation in the rat. With advancements in immunomodulation strategies together with new therapies in neuroregeneration, parallel development of human surgical protocols is vital for ensuring momentum toward eye transplantation in actual patients. METHODS: Cadaveric donor tissue harvest (n = 8) was performed with orbital exenteration, combined open craniotomy, and endonasal approach to ligate the ophthalmic artery with a cuff of paraclival internal carotid artery, for transection of the optic nerve at the optic chiasm and transection of cranial nerves III to VI and the superior ophthalmic vein at the cavernous sinus...
December 2016: Plastic and Reconstructive Surgery
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