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https://www.readbyqxmd.com/read/28107516/liver-amp-activated-protein-kinase-is-unnecessary-for-gluconeogenesis-but-protects-energy-state-during-nutrient-deprivation
#1
Clinton M Hasenour, D Emerson Ridley, Freyja D James, Curtis C Hughey, E Patrick Donahue, Benoit Viollet, Marc Foretz, Jamey D Young, David H Wasserman
AMPK is an energy sensor that protects cellular energy state by attenuating anabolic and promoting catabolic processes. AMPK signaling is purported to regulate hepatic gluconeogenesis and substrate oxidation; coordination of these processes is vital during nutrient deprivation or pathogenic during overnutrition. Here we directly test hepatic AMPK function in regulating metabolic fluxes that converge to produce glucose and energy in vivo. Flux analysis was applied in mice with a liver-specific deletion of AMPK (L-KO) or floxed control littermates to assess rates of hepatic glucose producing and citric acid cycle (CAC) fluxes...
2017: PloS One
https://www.readbyqxmd.com/read/28107394/quality-of-documentation-as-a-surrogate-marker-for-awareness-and-training-effectiveness-of-phtls-courses-part-of-the-prospective-longitudinal-mixed-methods-epptc-trial
#2
David Häske, Stefan K Beckers, Marzellus Hofmann, Rolf Lefering, Bernhard Gliwitzky, Christoph C Wölfl, Paul Grützner, Ulrich Stöckle, Marc Dieroff, Matthias Münzberg
OBJECTIVE: Care for severely injured patients requires multidisciplinary teamwork. A decrease in the number of accident victims ultimately affects the routine and skills. PHTLS ("Pre-Hospital Trauma Life Support") courses are established two-day courses for medical and non-medical rescue service personnel, aimed at improving the pre-hospital care of trauma patients worldwide. The study aims the examination of the quality of documentation before and after PHTLS courses as a surrogate endpoint of training effectiveness and awareness...
2017: PloS One
https://www.readbyqxmd.com/read/28106876/inhibition-of-innate-immune-cytosolic-surveillance-by-an-m-tuberculosis-phosphodiesterase
#3
Ruchi Jain Dey, Bappaditya Dey, Yue Zheng, Laurene S Cheung, Jie Zhou, David Sayre, Pankaj Kumar, Haidan Guo, Gyanu Lamichhane, Herman O Sintim, William R Bishai
Mycobacterium tuberculosis infection leads to cytosolic release of the bacterial cyclic dinucleotide (CDN) c-di-AMP and a host-generated CDN, cGAMP, both of which trigger type I interferon (IFN) expression in a STING-dependent manner. Here we report that M. tuberculosis has developed a mechanism to inhibit STING activation and the type I IFN response via the bacterial phosphodiesterase (PDE) CdnP, which mediates hydrolysis of both bacterial-derived c-di-AMP and host-derived cGAMP. Mutation of cdnP attenuates M...
February 2017: Nature Chemical Biology
https://www.readbyqxmd.com/read/28106782/from-clinical-standards-to-translating-next-generation-sequencing-research-into-patient-care-improvement-for-hepatobiliary-and-pancreatic-cancers
#4
REVIEW
Ioannis D Kyrochristos, Georgios K Glantzounis, Demosthenes E Ziogas, Ioannis Gizas, Dimitrios Schizas, Efstathios G Lykoudis, Evangelos Felekouras, Anastasios Machairas, Christos Katsios, Theodoros Liakakos, William C Cho, Dimitrios H Roukos
Hepatobiliary and pancreatic (HBP) cancers are associated with high cancer-related death rates. Surgery aiming for complete tumor resection (R0) remains the cornerstone of the treatment for HBP cancers. The current progress in the adjuvant treatment is quite slow, with gemcitabine chemotherapy available only for pancreatic ductal adenocarcinoma (PDA). In the advanced and metastatic setting, only two targeted drugs have been approved by the Food & Drug Administration (FDA), which are sorafenib for hepatocellular carcinoma and erlotinib for PDA...
January 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28106780/integrins-and-cell-metabolism-an-intimate-relationship-impacting-cancer
#5
REVIEW
Rehman Ata, Costin N Antonescu
Integrins are important regulators of cell survival, proliferation, adhesion and migration. Once activated, integrins establish a regulated link between the extracellular matrix and the cytoskeleton. Integrins have well-established functions in cancer, such as in controlling cell survival by engagement of many specific intracellular signaling pathways and in facilitating metastasis. Integrins and associated proteins are regulated by control of transcription, membrane traffic, and degradation, as well as by a number of post-translational modifications including glycosylation, allowing integrin function to be modulated to conform to various cellular needs and environmental conditions...
January 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28106738/6-paradol-and-6-shogaol-the-pungent-compounds-of-ginger-promote-glucose-utilization-in-adipocytes-and-myotubes-and-6-paradol-reduces-blood-glucose-in-high-fat-diet-fed-mice
#6
Chien-Kei Wei, Yi-Hong Tsai, Michal Korinek, Pei-Hsuan Hung, Mohamed El-Shazly, Yuan-Bin Cheng, Yang-Chang Wu, Tusty-Jiuan Hsieh, Fang-Rong Chang
The anti-diabetic activity of ginger powder (Zingiber officinale) has been recently promoted, with the recommendation to be included as one of the dietary supplements for diabetic patients. However, previous studies presented different results, which may be caused by degradation and metabolic changes of ginger components, gingerols, shogaols and paradols. Therefore, we prepared 10 ginger active components, namely 6-, 8-, 10-paradols, 6-, 8-, 10-shogaols, 6-, 8-, 10-gingerols and zingerone, and evaluated their anti-hyperglycemic activity...
January 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28105983/effect-of-bone-marrow-aspirate-concentrate-platelet-rich-plasma-on-tendon-derived-stem-cells-and-rotator-cuff-tendon-tear
#7
Sun Jeong, Da Hyun, Jong Wook, Silvia Park, Sang Jun
Bone marrow aspirate concentrates (BMACs) and platelet-rich plasma (PRP) are good sources to control the differentiation of tendon derived stem cells (TDSCs) but there has been no study about the effect of BMAC-PRP complex on TDSCs and tendinopathy. The aim of this study was to investigate the effect of BMAC-PRP on the TDSCs and to find the therapeutic effect of BMAC-PRP on the rotator cuff tendon tear. Chondrogenic and osteogenic potential of TDSCs decreased, but adipogenic potential of TDSCs revealed no significant difference when they were co-cultured with BMAC-PRP...
January 20, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28105981/cryopreservation-of-hepatocyte-microbeads-for-clinical-transplantation
#8
Suttiruk Jitraruch, Anil Dhawan, Robin D, Celine Filippi, Sharon C, Leanne Glover, Ragai R
Intraperitoneal transplantation of hepatocyte microbeads is an attractive option for the management of acute liver failure. Encapsulation of hepatocytes in alginate microbeads supports their function and prevents immune attack of the cells. Establishment of banked cryopreserved hepatocyte microbeads is important for emergency use. The aim of this study was to develop an optimised protocol for cryopreservation of hepatocyte microbeads for clinical transplantation using modified freezing solutions. Four freezing solutions with potential for clinical application were investigated...
January 20, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28105979/human-dental-pulp-stem-cells-are-more-effective-than-human-bone-marrow-derived-mesenchymal-stem-cells-in-cerebral-ischemic-injury
#9
Miyeoun Song, Jae-Hyung Lee, Jinhyun Bae, Youngmin Bu, Eun-Cheol Kim
We compared the therapeutic effects and mechanism of transplanted human dental pulp stem cells (hDPSCs) and human bonemarrow-derived mesenchymal stem cells (hMSCs) in a stroke model of rats and an <i>in vitro</i> ischemic model. Both hDPSCs- and hMSCs- intravenously injected rats 24&#8201;h after middle cerebral artery occlusion showed improved functional recovery and reduced infarct volume versus control rats, but the hDPSCs group showed greater reduction in infarct volume than hMSCs. The positive area for the endothelial cell marker was greater in the lesion boundary areas in the hDPSCs group than with hMSCs...
January 20, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28105977/age-related-changes-in-bone-marrow-mesenchymal-stromal-cells-a-potential-impact-on-osteoporosis-and-osteoarthritis-development
#10
Payal Ganguly, Jehan J, Peter V, Agata N, Frederique Ponchel, Elena A
Ageing at the cellular level is a complex process resulting from accumulation of various damages leading to functionalimpairment and a reduced quality of life at the level of the organism. With a rise in the elderly population, the worldwide incidence of osteoporosis (OP) and osteoarthritis (OA) has increased in the past few decades. A decline in the number and &#8216;fitness&#8217; of osteoblast progenitors, the mesenchymal stromal cells (MSCs) in the bone marrow (BM) niche has been suggested as one of the factors contributing to bone abnormalities in OP and OA...
January 20, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28105976/early-subretinal-allograft-rejection-is-characterized-by-innate-immune-activity
#11
Kevin P, Toby M, Deborah M, Cliona O Farrelly, David J
<p>Successful subretinal transplantation is limited by considerable early graft loss, despite pharmacological suppression of adaptive immunity. We postulated that early innate immune activity is a dominant factor in determining graft survival and chose a non-immunosuppressed mouse model of retinal pigment epithelial (RPE) cell transplantation to explore this.</p><p>Expression of almost all measured cytokines by DH01 RPE cells increased significantly following graft preparation and the neutrophil chemoattractant, KC/GRO/CINC, was most significantly increased...
January 20, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28105972/comparative-validation-of-the-determination-of-sofosbuvir-in-pharmaceuticals-by-several-inexpensive-ecofriendly-chromatographic-electrophoretic-and-spectrophotometric-methods
#12
Amira F El-Yazbi
Sofosbuvir (SOFO) was approved by the U.S. Food and Drug Administration in 2013 for the treatment of hepatitis C virusinfection with enhanced antiviral potency compared with earlier analogs. Notwithstanding, all current editions of the pharmacopeias still do not present any analytical methods for the quantification of SOFO. Thus, rapid, simple, and ecofriendly methods for the routine analysis of commercial formulations of SOFO are desirable. In this study, five accurate methods for the determination of SOFO in pharmaceutical tablets were developed and validated...
January 20, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28105954/the-amp-foot-3-new-generation-propulsive-prosthetic-feet-with-explosive-motion-characteristics-design-and-validation
#13
Pierre Cherelle, Victor Grosu, Manuel Cestari, Bram Vanderborght, Dirk Lefeber
The last decades, rehabilitation has become a challenging context for mechatronical engineering. From the state-of-the-art it is seen that the field of prosthetics offers very promising perspectives to roboticist. Today's prosthetic feet tend to improve amputee walking experience by delivering the necessary push-off forces while walking. Therefore, several new types of (compliant) actuators are developed in order to fulfill the torque and power requirements of a sound ankle-foot complex with minimized power consumption...
December 19, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28105928/computer-aided-identification-of-a-hevein-like-antimicrobial-peptide-of-bell-pepper-leaves-for-biotechnological-use
#14
Patrícia Dias Games, Elói Quintas Gonçalves daSilva, Meire de Oliveira Barbosa, Hebréia Oliveira Almeida-Souza, Patrícia Pereira Fontes, Marcos Jorge deMagalhães-Jr, Paulo Roberto Gomes Pereira, Maura Vianna Prates, Gloria Regina Franco, Alessandra Faria-Campos, Sérgio Vale Aguiar Campos, Maria Cristina Baracat-Pereira
BACKGROUND: Antimicrobial peptides from plants present mechanisms of action that are different from those of conventional defense agents. They are under-explored but have a potential as commercial antimicrobials. Bell pepper leaves ('Magali R') are discarded after harvesting the fruit and are sources of bioactive peptides. This work reports the isolation by peptidomics tools, and the identification and partially characterization by computational tools of an antimicrobial peptide from bell pepper leaves, and evidences the usefulness of records and the in silico analysis for the study of plant peptides aiming biotechnological uses...
December 15, 2016: BMC Genomics
https://www.readbyqxmd.com/read/28105725/antifungal-peptides-a-potential-new-class-of-antifungals-for-treating-vulvovaginal-candidiasis-caused-by-fluconazole-resistant-candida-albicans
#15
Siew Mei Samantha Ng, Yi Yong Alvin Yap, Jin Wei Darryl Cheong, Fui Mee Ng, Qiu Ying Lau, Timothy Barkham, Jeanette Woon Pei Teo, Jeffrey Hill, Cheng San Brian Chia
Vulvovaginal candidiasis/candidosis is a common fungal infection afflicting approximately 75% of women globally caused primarily by the yeast Candida albicans. Fluconazole is widely regarded as the antifungal drug of choice since its introduction in 1990 due to its high oral bioavailability, convenient dosing regimen and favourable safety profile. However, its widespread use has led to the emergence of fluconazole-resistant C. albicans, posing a universal clinical concern. Coupled to the dearth of new antifungal drugs entering the market, it is imperative to introduce new drug classes to counter this threat...
January 19, 2017: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/28105624/-clinical-research-of-delta-shaped-anastomosis-technology-in-laparoscopic-distal-gastrectomy-and-digestive-tract-reconstruction
#16
Bo Gao, Qingxing Huang, Jianhong Dong
OBJECTIVE: To evaluate the feasibility and safety of the delta-shaped anastomosis in laparoscopic distal gastrectomy and digestive tract reconstruction. METHODS: Clinical data of 34 gastric cancer patients undergoing laparoscopic distal gastrectomy with the delta-shaped anastomosis for digestive tract reconstruction (delta-shaped group) and 83 gastric cancer patients undergoing laparoscopic distal gastrectomy with Billroth I( for digestive tract reconstruction (Billroth group) by same surgeon team from July 2013 to July 2015 at the Department of Digestive Surgery, Affiliated Tumor Hospital of Shanxi Medical University were retrospectively analyzed...
January 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28105187/atf2-translation-is-induced-under-chemotherapeutic-drug-mediated-cellular-stress-via-an-ires-dependent-mechanism-in-human-hepatic-cancer-bel7402-cells
#17
Qi Li, Wen-Qing Gao, Wen-Yan Dai, Chuang Yu, Rui-Yu Zhu, Jian Jin
Activating transcription factor (ATF) 2 is a member of the ATF/cyclic AMP-responsive element binding protein family, which exhibits both oncogenic and tumor-suppressor functions. In our preliminary experiments, it was observed that the expression of the ATF2 protein was induced following treatment with adriamycin (ADR) and paclitaxel (PTX), which may be regulated by internal ribosome entry segment (IRES)-mediated translation. By constructing a bicistronic vector containing the ATF2 5'-untranslated region (UTR), it was demonstrated that the ATF2 5'-UTR contains an IRES and maps a 30-nucleotide (nt) sequence (from nt 299 to nt ~269), which was essential for the IRES activity...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28105182/long-lasting-stable-disease-with-mtor-inhibitor-treatment-in-a-patient-with-a-perivascular-epithelioid-cell-tumor-a-case-report-and-literature-review
#18
Ezequiel Flechter, Yaniv Zohar, Ludmila Guralnik, Maria Passhak, Gil Bar Sela
Perivascular epithelioid cell tumor (PEComa) of the small intestine is extremely rare, and there is no established treatment at the present time. In 10% of patients with PEComas, genetic alterations of tuberous sclerosis complex have been reported. These genetic alterations activate mechanistic target of rapamycin (mTOR) in AMP-activated protein kinase and Ras/mitogen-activated protein kinase pathways, resulting in high mTOR activity. Since 2007, several cases of treatment with mTOR inhibitors in advanced PEComa have been reported...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28105169/role-of-wnt-%C3%AE-catenin-pathway-in-inducing-autophagy-and-apoptosis-in-multiple-myeloma-cells
#19
Nan Su, Pingping Wang, Yan Li
β-catenin is the downstream effector of the Wnt signaling pathway, which regulates cell proliferation and differentiation. Activation of the Wnt/β-catenin signaling pathway has been shown to positively correlate with prognosis in several types of malignancies. The present study aimed to determine the role of β-catenin in multiple myeloma (MM) cells using lentiviruses expressing small interfering RNA (siRNA). The expression of β-catenin in the MM cell line RPMI-8826 was evaluated following β-catenin knockdown by the siRNA...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28104549/mechanisms-of-silver_nanoparticles-induced-hypopigmentation-in-embryonic-zebrafish
#20
Lian Xu, Qin-Han Xu, Xin-Ying Zhou, Li-Yan Yin, Peng-Peng Guan, Ting Zhang, Jing-Xia Liu
Silver_nanoparticles (AgNPs) have been reported to inhibit specification of erythroid cells and to induce spinal cord deformities and cardiac arrhythmia in vertebrates, but have not been implicated in development of neural crest (NC) and pigment cells in an in vivo model yet. In current study, down-regulated expressions of NC genes pax7 and foxd3, melanophore genes mitfa and dct, and xanthophore gene gch2 in AgNPs-exposed embryos were revealed by microarray, qRT-PCR and whole-mount in situ hybridization (WISH)...
January 12, 2017: Aquatic Toxicology
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