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https://www.readbyqxmd.com/read/28110028/surgical-ethical-and-psychosocial-considerations-in-head-transplantation
#1
REVIEW
Allen Furr, Mark A Hardy, Juan P Barret, John H Barker
Transplanting a head and brain is perhaps the final frontier of organ transplantation. The goal of body-to-head transplantation (BHT) is to sustain the life of individuals who suffer from terminal disease, but whose head and brain are healthy. Ideally BHT could provide a lifesaving treatment for several conditions where none currently exists. BHT is no ordinary experiment, to transfer a head to another body involves extraordinarily complex medical challenges as well as ethical and existential dilemmas that were previously confined to the imagination of writers of fiction...
January 18, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28109768/is-centrosomal-protein-70-a-centrosomal-protein-with-new-roles-in-breast-cancer-dissemination-and-metastasis-a-facilitator-of-epithelial-mesenchymal-transition
#2
Pedro A Lazo
This commentary highlights the article by Shi et al that identified centrosomal protein 70 as a key mediator of breast cancer growth and metastasis.
January 18, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28109737/retinal-oxygen-from-animals-to-humans
#3
REVIEW
Robert A Linsenmeier, Hao F Zhang
This article discusses retinal oxygenation and retinal metabolism by focusing on measurements made with two of the principal methods used to study O2 in the retina: measurements of PO2 with oxygen-sensitive microelectrodes in vivo in animals with a retinal circulation similar to that of humans, and oximetry, which can be used non-invasively in both animals and humans to measure O2 concentration in retinal vessels. Microelectrodes uniquely have high spatial resolution, allowing the mapping of PO2 in detail, and when combined with mathematical models of diffusion and consumption, they provide information about retinal metabolism...
January 18, 2017: Progress in Retinal and Eye Research
https://www.readbyqxmd.com/read/28109420/improving-nutrition-by-increasing-supplemental-nutrition-assistance-program-benefits
#4
Ann M Collins, Jacob A Klerman
The diets of Americans fall far short of recommended dietary guidelines, and those who live in low-income households have even poorer diets than higher-income households. Many low-income Americans rely on the Supplemental Nutrition Assistance Program (SNAP). The program's dual goals are to improve food security and nutrition. Among the possible strategies to address dietary shortfalls among low-income Americans is to increase the SNAP benefit. This article uses data from the random assignment evaluation of the Summer Electronic Benefit Transfer for Children demonstration to add new insights on the impact of SNAP on diet quality for households receiving SNAP who also received SNAP-like benefits through Summer Electronic Benefit Transfer for Children...
February 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28109347/how-is-physician-work-valued
#5
Jeffrey P Jacobs, Stephen J Lahey, Francis C Nichols, James M Levett, George Gilbert Johnston, Richard K Freeman, James D St Louis, Julie Painter, Courtney Yohe, Cameron D Wright, Kirk R Kanter, John E Mayer, Keith S Naunheim, Jeffrey B Rich, Joseph E Bavaria
Strategies to value physician work continue to evolve. The Society of Thoracic Surgeons and The Society of Thoracic Surgeons National Database have an increasingly important role in this evolution. An understanding of the Current Procedural Terminology (CPT) system (American Medical Association [AMA], Chicago, IL) and the Relative Value Scale Update Committee (RUC) is necessary to comprehend how physician work is valued. In 1965, with the dawn of increasingly complex medical care, immense innovation, and the rollout of Medicare, the need for a common language describing medical services and procedures was recognized as being of critical importance...
February 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28109123/sodium-butyrate-protects-against-high-fat-diet-induced-cardiac-dysfunction-and-metabolic-disorders-in-type-ii-diabetic-mice
#6
Ling Zhang, Jianfeng Du, Naohiro Yano, Hao Wang, Yu Tina Zhao, Dubielecka-Szczerba Patricia, Shougang Zhuang, Eugene Y Chin, Gangjian Qin, Ting C Zhao
Histone deacetylases are recently identified to act as key regulators for cardiac pathophysiology and metabolic disorders. However, the function of histone deacetylase (HDAC) in controlling cardiac performance in type II diabetes and obesity remains unknown. Here we determine whether HDAC inhibition attenuates high fat diet (HFD)-induced cardiac dysfunction and improves metabolic features. Adult mice were fed with either HFD or standard chow food for 24 weeks. Starting at 12 weeks, mice were divided into four groups randomly, in which sodium butyrate (1%), a potent HDAC inhibitor, was provided to chow and HFD-fed mice in drinking water, respectively...
January 21, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28109039/nkx2-5-regulates-endothelin-converting-enzyme-1-during-pharyngeal-arch-patterning
#7
Jennifer M Iklé, Andre L P Tavares, Marisol King, Hailei Ding, Sophie Colombo, Beth A Firulli, Anthony B Fiulli, Kimara L Targoff, Deborah Yelon, David E Clouthier
In gnathostomes, dorsoventral (D-V) patterning of neural crest cells (NCC) within the pharyngeal arches is crucial for the development of hinged jaws. One of the key signals that mediates this process is Endothelin-1 (EDN1). Loss of EDN1 binding to the Endothelin-A receptor (EDNRA) results in loss of EDNRA signaling and subsequent facial birth defects in humans, mice and zebrafish. A rate-limiting step in this crucial signaling pathway is the conversion of immature EDN1 into a mature active form by Endothelin converting enzyme-1 (ECE1)...
January 20, 2017: Genesis: the Journal of Genetics and Development
https://www.readbyqxmd.com/read/28109037/a-new-strategy-for-development-of-anti-thrombotic-agents-inhibition-of-the-c-terminal-active-site-of-pdi
#8
L Wang, D W Essex
Protein disulfide isomerase (PDI) was discovered over fifty years ago as an enzyme that forms disulfide bonds in newly synthesized proteins in the endoplasmic reticulum [1]. Twenty five years ago PDI was shown to be released from activated platelets [2] opening up a new field of research on extracellular functions of this enzyme. PDI was subsequently localized to the platelet surface [3] and shown to mediate platelet aggregation [4, 5]. This article is protected by copyright. All rights reserved.
January 21, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28109025/immune-regulation-by-t-regulatory-cells-in-hbv-related-inflammation-and-cancer
#9
REVIEW
Nirupama Trehanpati, Ashish Kumar Vyas
Hepatocellular carcinoma (HCC) is the leading cause of cancer death and hepatitis B virus (HBV) infection is one of the commonest causes in Asians countries. India has the second largest pool after China for hepatitis B infected subjects. HBV clearance is T cell dependent and one of the reason for T cells hypo responsiveness is due to mass production of Tregs through activation of Notch signaling, which suppressCD4/CD8 T cells. Regulatory T cells (Tregs) are important to maintain cellular homeostasis; however during viral infection increase of Tregs is inversely proportional to HBV DNA titers...
January 21, 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28109024/computer-assisted-technologies-used-in-oral-rehabilitation-and-the-clinical-documentation-of-alleged-advantages-a-systematic-review
#10
REVIEW
Asbjørn Jokstad
The objective of this systematic review is to identify current computer-assisted technologies used for managing patients with a need to re-establish craniofacial appearance, subjective discomfort and stomatognathic function, and the extent of their clinical documentation. Electronic search strategies were used for locating clinical studies in MEDLINE through PubMed and in the Cochrane library, and in the grey literature through searches on Google Scholar. The searches for commercial digital products for use in oral rehabilitation resulted in identifying 225 products per November 2016, used for patient diagnostics, communication and therapy purposes, and for other computer-assisted applications in context with oral rehabilitation...
January 21, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28109001/polygonum-multiflorum-radix-extract-protects-human-foreskin-melanocytes-from-oxidative-stress-in-vitro-and-potentiates-hair-follicle-pigmentation-ex-vivo
#11
Peggy Sextius, Richard Betts, Ishak Benkhalifa, Stéphane Commo, Joan Eilstein, Marco Massironi, Ping Wang, Jean-Francois Michelet, Jie Qiu, Xuezhu Tan, Severine Jeulin
OBJECTIVE: To examine the ability of an extract from traditional Chinese medicine, Polygonum multiflorum Radix, to protect melanocyte viability from oxidative stress, a key mechanism in the initiation and progression of hair greying. METHODS: To assess the antioxidant capacity of Polygonum multiflorum Radix extract, primary human foreskin melanocytes were treated with a commercially available Polygonum multiflorum Radix extract added to culture medium and exposed to hydrogen peroxide (H2 O2 ), using intracellular reactive oxygen species concentrations and glutathione/protein ratios as endpoints...
January 20, 2017: International Journal of Cosmetic Science
https://www.readbyqxmd.com/read/28108993/experience-from-a-multi-country-initiative-to-improve-the-monitoring-of-selected-reproductive-health-indicators-in-africa
#12
Maria Barreix, Özge Tunçalp, Namuunda Mutombo, Ayotunde A Adegboyega, Lale Say
Universal access to sexual and reproductive health remains part of the unfinished business of global development in the Africa. To achieve it, health interventions should be monitored using programmatic indicators. WHO's Strengthening Measurement of Reproductive Health Indicators in Africa initiative, implemented in Ghana, Nigeria, Kenya, Uganda, and Zimbabwe, aimed to improve national information systems for routine monitoring of reproductive health indicators. Participating countries developed action plans employing a two-pronged strategy: (1) revising, standardizing, and harmonizing existing information-system reproductive health indicators; and (2) building data-collection capacity through training and supervision at select pilot sites...
January 21, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28108989/tigit-signaling-pathway-negatively-regulates-cd4-t-cell-responses-in-systemic-lupus-erythematosus
#13
Lie Mao, Hongyan Hou, Shiji Wu, Yu Zhou, Juan Wang, Jing Yu, Xiaohui Wu, Yanfang Lu, Liyan Mao, Munyemana Jean Bosco, Feng Wang, Ziyong Sun
B lymphocyte hyperactivity in systemic lupus erythematosus (SLE) is T cell-dependent, and CD4(+) T cell activation is essential to SLE pathogenesis. However, the mechanism of the deregulation of CD4(+) T cells in SLE is largely unknown. T-cell immunoglobulin and ITIM domain (TIGIT) is a new inhibitory receptor preferentially expressed on activated CD4(+) T cells. Here, we addressed the role of TIGIT in the pathogenesis of SLE. Our results showed that TIGIT expression on CD4(+) T cells was significantly elevated in patients with SLE and highly correlated with the activity of the disease...
January 20, 2017: Immunology
https://www.readbyqxmd.com/read/28108987/activation-of-sirt1-by-human-chorionic-gonadotropin-exerts-a-therapeutic-effect-on-hepatic-injury-and-inflammation
#14
Caroline Steinmetz, Anubha Kashyap, Nataliya Zhivkova, Henry Alizor, Isabell Ernst, Daniela Gottfried-Brand, Henning Janssen, Andreas Teufel, Henning Schulze-Bergkamen, Johannes Lotz, Jürgen Kuball, Matthias Theobald, Michael Heise, Hauke Lang, Peter R Galle, Dennis Strand, Susanne Strand
: The incidence and prevalence of inflammatory liver diseases has increased over the last years but therapeutic options are limited. Pregnancy induces a state of immune tolerance, which can result in spontaneous improvement of clinical symptoms of certain autoimmune diseases including autoimmune hepatitis (AIH). We investigated the immune suppressive mechanisms of the human pregnancy hormone chorionic gonadotropin (hCG) in the liver. HCG signaling activates SIRT1, which deacetylates FOXO3a, leading to repression of pro-apoptotic gene expression...
January 21, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28108977/a-locus-coeruleus-norepinephrine-account-of-individual-differences-in-working-memory-capacity-and-attention-control
#15
Nash Unsworth, Matthew K Robison
Studies examining individual differences in working memory capacity (WMC) have suggested that low WMC individuals have particular deficits in attention control processes compared to high WMC individuals. In the current article we suggest that part of the WMC-attention control relation is due to variation in the functioning of the locus coeruleus-norepinephrine system (LC-NE). Specifically, we suggest that because of dysregulation of LC-NE functioning, the fronto-parietal control network for low WMC individuals is only weakly activated, resulting in greater default-mode network activity (and greater mind-wandering) for low WMC individuals compared to high WMC individuals...
January 20, 2017: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/28108820/prevention-of-chemotherapy-induced-nausea-the-role-of-neurokinin-1-nk1-receptor-antagonists
#16
Snežana M Bošnjak, Richard J Gralla, Lee Schwartzberg
Chemotherapy-induced nausea (CIN) has a significant negative impact on the quality of life of cancer patients. The use of 5-hydroxytryptamine-3 (5-HT3) receptor antagonists (RAs) has reduced the risk of vomiting, but (except for palonosetron) their effect on nausea, especially delayed nausea, is limited. This article reviews the role of NK1RAs when combined with 5-HT3RA-dexamethasone in CIN prophylaxis. Aprepitant has not shown consistent superiority over a two-drug (ondansetron-dexamethasone) combination in nausea control after cisplatin- or anthracycline-cyclophosphamide (AC)-based highly emetogenic chemotherapy (HEC)...
January 20, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28108739/targeting-oncogenic-vulnerabilities-in-triple-negative-breast-cancer-biological-bases-and-ongoing-clinical-studies
#17
Alberto Ocana, Atanasio Pandiella
Triple negative breast cancer (TNBC) is still an incurable disease despite the great scientific effort performed during the last years. The huge heterogeneity of this disease has motivated the evaluation of a great number of therapies against different molecular alterations. In this article, we review the biological bases of this entity and how the known molecular evidence supports the current preclinical and clinical development of new therapies. Special attention will be given to ongoing clinical studies and potential options for future drug combinations...
January 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28108564/technical-details-making-aortic-arch-replacement-a-safe-procedure-using-the-thoraflex%C3%A2-hybrid-prosthesis
#18
REVIEW
Martin Czerny, Bartosz Rylski, Fabian A Kari, Maximilian Kreibich, Julia Morlock, Johannes Scheumann, Stoyan Kondov, Michael Südkamp, Matthias Siepe, Friedhelm Beyersdorf
SummaryThe development of new devices to improve treatment and to explore new indications that have not yet been adequately addressed is a natural consequence of the clinical demand for solutions to as yet unmet needs. The frozen elephant trunk technique was one of the major steps within the last 15 years to improve on existing treatments as well as to explore new indications. The goal of this article is to provide technical details about advances in implantation techniques for the treatment of acute and chronic thoracic aortic pathological conditions...
January 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28108483/measuring-hip-muscle-strength-in-patients-with-femoroacetabular-impingement-and-other-hip-pathologies-a-systematic-review
#19
E Mayne, A Memarzadeh, P Raut, A Arora, V Khanduja
OBJECTIVES: The aim of this study was to systematically review the literature on measurement of muscle strength in patients with femoroacetabular impingement (FAI) and other pathologies and to suggest guidelines to standardise protocols for future research in the field. METHODS: The Cochrane and PubMed libraries were searched for any publications using the terms 'hip', 'muscle', 'strength', and 'measurement' in the 'Title, Abstract, Keywords' field. A further search was performed using the terms 'femoroacetabular' or 'impingement'...
January 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28108115/a-reappraisal-of-the-surgical-planning-of-the-superficial-circumflex-iliac-artery-perforator-flap
#20
Shaoqing Feng, Wenjing Xi, Zheng Zhang, Mathias Tremp, Dirk J Schaefer, Parviz L Sadigh, Wenjie Zhang, Yi Xin Zhang
OBJECTIVE: The popularity of the superficial circumflex iliac artery perforator (SCIP) flap has been limited by factors such as variable vascular anatomy and short arterial pedicle. This article aimed to delineate flap design and harvest strategies based around either the proximal or distal perforators of the superficial circumflex iliac artery (SCIA) and propose a set of strategies that can help deal with the limitations of the flap. METHOD: From August 2011 to June 2015, the SCIP flap was used in 80 patients for soft tissue defects at our institution...
December 22, 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
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