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https://www.readbyqxmd.com/read/28522568/peroxisome-proliferator-activated-receptor-gamma-enhances-human-pulmonary-artery-smooth-muscle-cell-apoptosis-through-microrna-21-and-programmed-cell-death-4
#1
David Emerson Green, Tamara C Murphy, Bum-Yong Kang, Brahmchetna Bedi, Zhihong Yuan, Ruxana T Sadikot, C Michael Hart
Pulmonary hypertension (PH) is a progressive disorder whose cellular pathogenesis involves enhanced smooth muscle cell (SMC) proliferation and resistance to apoptosis signals. Existing evidence demonstrates that the tumor suppressor, programmed cell death 4 (PDCD4) affects patterns of cell growth and repair responses in the systemic vasculature following experimental injury. In the current study, the regulation PDCD4 and its functional effects on growth and apoptosis susceptibility in pulmonary artery smooth muscle cells was explored...
May 18, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28507805/generation-and-functional-characterization-of-mdsc-like-cells
#2
Annkristin Heine, Stefanie Andrea Erika Held, Jonas Schulte-Schrepping, Julia Friederike Andrea Wolff, Kathrin Klee, Thomas Ulas, Niklas Arndt Schmacke, Solveig Nora Daecke, Kati Riethausen, Joachim L Schultze, Peter Brossart
Myeloid-derived suppressor cells (MDSC) are critical in regulating immune responses by suppressing antigen presenting cells (APC) and T cells. We previously observed that incubation of peripheral blood monocytes with interleukin (IL)-10 during their differentiation to monocyte-derived dendritic cells (moDCs) results in the generation of an APC population with a CD14(+)HLA-DR(low)phenotype (IL-10-APC) with reduced stimulatory capacity similar to human MDSC. Co-incubation experiments now revealed that the addition of IL-10-APC to moDC caused a reduction of DC-induced T-cell proliferation, of the expression of maturation markers, and of secreted cytokines and chemokines such as TNF-α, IL-6, MIP-1α and Rantes...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28465485/radiation-improves-antitumor-effect-of-immune-checkpoint-inhibitor-in-murine-hepatocellular-carcinoma-model
#3
Kyoung-Jin Kim, Ji-Hye Kim, Seo Jin Lee, Eun-Jung Lee, Eui-Cheol Shin, Jinsil Seong
BACKGROUND & AIMS: Although immunotherapy has emerged as an attractive therapy for refractory cancers, its limited efficacy in hepatocellular carcinoma (HCC) suggests the need for a combination strategy that can either enhance or complement therapeutic effect. We investigated whether combination of immune checkpoint blockade (ICB) and radiation could enhance antitumor effect in a murine HCC model. METHODS: Using murine HCC, HCa-1, the effect of radiation on programmed death-ligand1 (PD-L1) expression was determined by real-time PCR, flow cytometry, and western blotting...
April 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28464037/pressure-overload-induced-angiotensin-mediated-early-remodeling-in-mouse-heart
#4
Jeremy H Kim, Ya-Ping Jiang, Ira S Cohen, Richard Z Lin, Richard T Mathias
Our previous work on angiotensin II-mediated electrical-remodeling in canine left ventricle, in connection with a long history of other studies, suggested the hypothesis: increases in mechanical load induce autocrine secretion of angiotensin II (A2), which coherently regulates a coterie of membrane ion transporters in a manner that increases contractility. However, the relation between load and A2 secretion was correlative. We subsequently showed a similar or identical system was present in murine heart. To investigate whether the relation between mechanical load and A2-mediated electrical remodeling was causal, we employed transverse aortic constriction in mice to subject the left ventricle to pressure overload for short-term (1 to 2 days) or long-term (1 to 2 weeks) periods...
2017: PloS One
https://www.readbyqxmd.com/read/28458101/role-of-programmed-death-ligand-1-and-kupffer-cell-in-immune-regulation-after-orthotopic-liver-transplantation-in-rats
#5
Junhua Gong, Ding Cao, Yong Chen, Jinzheng Li, Jianping Gong, Zhong Zeng
INTRODUCTION: Role of programmed death ligand 1 (PD-L1) and Kupffer cells (KCs) in liver transplantation immune regulation was unclear. METHODS: Lewis and Brown-Norway (BN) rats were assigned to LEW-BN group (Lewis-to-BN liver transplantation) and BN-BN group (BN-to-BN). Receipts were sacrificed for histology and assessment of cytokines and PD-L1 production. Effect of PD-L1 and KCs on T cells (TCs) was monitored by co-culture of (3)H-Thymidine TCs. KCs transfected with PD-L1-shRNA interference plasmids were co-cultured with TCs, PD-L1 expression and cytokines production were measured respectively...
April 27, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28457961/controlled-release-of-gag-binding-enhanced-transduction-get-peptides-for-sustained-and-highly-efficient-intracellular-delivery
#6
Hosam Al-Deen M Abu-Awwad, Lalitha Thiagarajan, James E Dixon
Controlled release systems for therapeutic molecules are vital to allow the sustained local delivery of their activities which direct cell behaviour and enable novel regenerative strategies. Direct programming of cells using exogenously delivered transcription factors can by-pass growth factor signalling but there is still a requirement to deliver such activity spatio-temporally. We previously developed a technology termed GAG-binding enhanced transduction (GET) to efficiently deliver a variety of cargoes intracellularly, using GAG-binding domains which promote cell targeting, and cell penetrating peptides (CPPs) which allow cell entry...
April 27, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28446595/dna-damage-signaling-mediates-the-functional-antagonism-between-replicative-senescence-and-terminal-muscle-differentiation
#7
Lucia Latella, Alessandra Dall'Agnese, Francesca Boscolo Sesillo, Chiara Nardoni, Marianna Cosentino, Armin Lahm, Alessandra Sacco, Pier Lorenzo Puri
The molecular determinants of muscle progenitor impairment to regenerate aged muscles are currently unclear. We show that, in a mouse model of replicative senescence, decline in muscle satellite cell-mediated regeneration coincides with activation of DNA damage response (DDR) and impaired ability to differentiate into myotubes. Inhibition of DDR restored satellite cell differentiation ability. Moreover, in replicative human senescent fibroblasts, DDR precluded MYOD-mediated activation of the myogenic program...
April 1, 2017: Genes & Development
https://www.readbyqxmd.com/read/28444216/dietary-metabolites-derived-from-gut-microbiota-critical-modulators-of-epigenetic-changes-in-mammals
#8
Mohd Iqbal Bhat, Rajeev Kapila
The mammalian gastrointestinal tract harbors trillions of commensal microorganisms, collectively known as the microbiota. The microbiota is a critical source of environmental stimuli and, thus, has a tremendous impact on the health of the host. The microbes within the microbiota regulate homeostasis within the gut, and any alteration in their composition can lead to disorders that include inflammatory bowel disease, allergy, autoimmune disease, diabetes, mental disorders, and cancer. Hence, restoration of the gut flora following changes or imbalance is imperative for the host...
May 1, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28430105/switching-of-metabolic-programs-in-response-to-light-availability-is-an-essential-function-of-the-cyanobacterial-circadian-output-pathway
#9
Anna M Puszynska, Erin K O'Shea
The transcription factor RpaA is the master regulator of circadian transcription in cyanobacteria, driving genome-wide oscillations in mRNA abundance. Deletion of rpaA has no effect on viability in constant light conditions, but renders cells inviable in cycling conditions when light and dark periods alternate. We investigated the mechanisms underlying this viability defect, and demonstrate that the rpaA(-) strain cannot maintain appropriate energy status at night, does not accumulate carbon reserves during the day, and is defective in transcription of genes crucial for utilization of carbohydrate stores at night...
April 21, 2017: ELife
https://www.readbyqxmd.com/read/28419032/formal-physical-therapy-after-total-hip-arthroplasty-is-not-required-a-randomized-controlled-trial
#10
RANDOMIZED CONTROLLED TRIAL
Matthew S Austin, Brian T Urbani, Andrew N Fleischman, Navin D Fernando, James J Purtill, William J Hozack, Javad Parvizi, Richard H Rothman
BACKGROUND: The value of formal physical therapy after total hip arthroplasty is unknown. With substantial changes that have occurred in surgical and anesthesia techniques, self-directed therapy may be efficacious in restoring function to patients undergoing total hip arthroplasty. METHODS: We conducted a single-center, randomized trial of 120 patients undergoing primary, unilateral total hip arthroplasty who were eligible for direct home discharge. The experimental group followed a self-directed home exercise program for 10 weeks...
April 19, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28408155/arthroscopic-capsular-plication-and-labral-seal-restoration-in-borderline-hip-dysplasia-2-year-clinical-outcomes-in-55-cases
#11
Sivashankar Chandrasekaran, Nader Darwish, Timothy J Martin, Carlos Suarez-Ahedo, Parth Lodhia, Benjamin G Domb
PURPOSE: To report clinical outcomes in patients with borderline dysplasia undergoing an arthroscopic technique of labral seal restoration with minimal acetabular rim resection and capsular plication. METHODS: Patients younger than 40 years with a lateral center-edge angle of 18° greater and 25° or less and 2-year follow-up after undergoing an arthroscopic technique of labral seal restoration with minimal rim resection (≤2 mm) and capsular plication (3-5 sutures placed in an oblique orientation to create an imbrication and inferior shift) were included...
April 10, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28400482/epigenetic-programming-of-the-neuroendocrine-stress-response-by-adult-life-stress
#12
Bart Dirven, Judith Homberg, Tamas Kozicz, Marloes Henckens
The hypothalamic-pituitary adrenal (HPA) axis is critically involved in the neuroendocrine regulation of stress adaptation, and the restoration of homeostasis following stress exposure. Dysregulation of this axis is associated with stress-related pathologies like major depressive disorder, post-traumatic stress disorder, panic disorder, and chronic anxiety. It has long been understood that stress during early life can have a significant lasting influence on the development of the neuroendocrine system and its neural regulators, partially by modifying epigenetic regulation of gene expression, with implications for health and well-being in later life...
April 11, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/28397730/programmed-cell-death-1-programmed-death-ligand-1-pathway-a-new-target-for-sepsis
#13
REVIEW
Qiang Liu, Chun-Sheng Li
OBJECTIVE: Sepsis remains a leading cause of death in many Intensive Care Units worldwide. Immunosuppression has been a primary focus of sepsis research as a key pathophysiological mechanism. Given the important role of the negative costimulatory molecules programmed cell death-1 (PD-1) and programmed death-ligand 1 (PD-L1) in the occurrence of immunosuppression during sepsis, we reviewed literatures related to the PD-1/PD-L1 pathway to examine its potential as a new target for sepsis treatment...
April 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28374691/-restoring-of-the-speech-functions-in-patients-with-aphasia-in-the-early-rehabilitation-period-of-ischemic-stroke
#14
S V Kotov, Yu A Belova, M M Shcherbakova, A D Chervinskaya, E V Isakova, T V Volchenkova
AIM: To study the efficacy of combined therapy including daily sessions and two 10-day injections of the drug cellex in patients with aphasia in the early rehabilitation period of ischemic stroke (II). MATERIAL AND METHODS: Forty patients in the early rehabilitation period of II in the basin of the left middle cerebral artery with moderate to severe aphasia were studied. Twenty patients received combined therapy, including daily sessions with a speech therapist-aphasiologist within 10 days using the improved method, then a self-study using educational materials and two 10-day injections of cellex...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28363296/postburn-upper-extremity-occupational-therapy
#15
REVIEW
Tiffany Williams, Tanya Berenz
Upper extremity burns can result in lifelong complications. A comprehensive occupational therapy program is imperative for restoration of arm function. Edema management, splinting, exercise, scar management, and activities of daily living are key treatment elements to achieve optimal postburn outcomes. Proper patient and family education are essential for therapeutic success. Burn recovery requires a commitment to therapeutic techniques that can progress a patient to their maximal independence.
May 2017: Hand Clinics
https://www.readbyqxmd.com/read/28344877/impact-of-chemo-radiotherapy-on-immune-cell-composition-and-function-in-cervical-cancer-patients
#16
H van Meir, R A Nout, M J P Welters, N M Loof, M L de Kam, J J van Ham, S Samuels, G G Kenter, A F Cohen, C J M Melief, J Burggraaf, M I E van Poelgeest, S H van der Burg
New treatments based on combinations of standard therapeutic modalities and immunotherapy are of potential use, but require a profound understanding of immune modulatory properties of standard therapies. Here, the impact of standard (chemo)radiotherapy on the immune system of cervical cancer patients was evaluated. Thirty patients with cervical cancer were treated with external beam radiation therapy (EBRT), using conventional three-dimensional or intensity modulated radiation therapy without constraints for bone marrow sparing...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28341998/ire1-signaling-exacerbates-alzheimer-s-disease-pathogenesis
#17
Claudia Duran-Aniotz, Victor Hugo Cornejo, Sandra Espinoza, Álvaro O Ardiles, Danilo B Medinas, Claudia Salazar, Andrew Foley, Ivana Gajardo, Peter Thielen, Takao Iwawaki, Wiep Scheper, Claudio Soto, Adrian G Palacios, Jeroen J M Hoozemans, Claudio Hetz
Altered proteostasis is a salient feature of Alzheimer's disease (AD), highlighting the occurrence of endoplasmic reticulum (ER) stress and abnormal protein aggregation. ER stress triggers the activation of the unfolded protein response (UPR), a signaling pathway that enforces adaptive programs to sustain proteostasis or eliminate terminally damaged cells. IRE1 is an ER-located kinase and endoribonuclease that operates as a major stress transducer, mediating both adaptive and proapoptotic programs under ER stress...
March 24, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28339017/sirt1-is-required-for-mitochondrial-biogenesis-reprogramming-in-hypoxic-human-pulmonary-arteriolar-smooth-muscle-cells
#18
Pengyun Li, Yan Liu, Nana Burns, Ke-Seng Zhao, Rui Song
Although recent studies have reported that mitochondria are putative oxygen sensors underlying hypoxic pulmonary vasoconstriction, little is known concerning the sirtuin 1 (SIRT1)-mediated mitochondrial biogenesis regulatory program in pulmonary arteriolar smooth muscle cells (PASMCs) during hypoxia/reoxygenation (H/R). We investigated the epigenetic regulatory mechanism of mitochondrial biogenesis and function in human PASMCs during H/R. Human PASMCs were exposed to hypoxia of 24-48 h and reoxygenation of 24-48 h...
May 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28338573/a-machine-learning-based-surface-electromyography-topography-evaluation-for-prognostic-prediction-of-functional-restoration-rehabilitation-in-chronic-low-back-pain
#19
Naifu Jiang, Keith Dip-Kei Luk, Yong Hu
STUDY DESIGN: A retrospective study. OBJECTIVE: To investigate the feasibility and applicability of support vector machine (SVM) algorithm in classifying patients with LBP who would obtain satisfactory or unsatisfactory progress after the functional restoration rehabilitation program. SUMMARY OF BACKGROUND DATA: Dynamic surface electromyography (SEMG) topography has demonstrated the potential use in predicting the prognosis of functional restoration rehabilitation for patients with low back pain (LBP)...
March 23, 2017: Spine
https://www.readbyqxmd.com/read/28336389/metformin-ameliorates-uterine-defects-in-a-rat-model-of-polycystic-ovary-syndrome
#20
Yuehui Zhang, Min Hu, Fanci Meng, Xiaoyan Sun, Hongfei Xu, Jiao Zhang, Peng Cui, Njomeza Morina, Xin Li, Wei Li, Xiao-Ke Wu, Mats Brännström, Ruijin Shao, Håkan Billig
Adult rats treated concomitantly with insulin and human chorionic gonadotropin exhibit endocrine, metabolic, and reproductive abnormalities that are very similar to those observed in polycystic ovary syndrome (PCOS) patients. In this study, we used this rat model to assess the effects of metformin on PCOS-related uterine dysfunction. In addition to reducing androgen levels, improving insulin sensitivity, and correcting the reproductive cycle, metformin treatment induced morphological changes in the PCOS-like uterus...
April 2017: EBioMedicine
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