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https://www.readbyqxmd.com/read/29334574/improved-long-term-volume-retention-of-svf-gel-grafting-with-enhanced-angiogenesis-and-adipogenesis
#1
Yuteng Zhang, Junrong Cai, Tao Zhou, Yao Yao, Ziqing Dong, Feng Lu
BACKGROUND: The apoptosis of mature adipocytes after fat grafting can result in chronic inflammation, absorption, and fibrosis, leading to unpredictable outcomes. Selective elimination of mature adipocytes may result in better outcomes and a different underlying retention mode. We previously developed a mature-adipocyte-free product, SVF-gel, derived from lipoaspirate, which eliminates adipocytes while preserving the stromal vascular fraction. This study investigated the retention and regeneration mode of SVF-gel grafting...
January 10, 2018: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29334374/transitory-presence-of-myeloid-derived-suppressor-cells-in-neonates-is-critical-for-control-of-inflammation
#2
Yu-Mei He, Xing Li, Michela Perego, Yulia Nefedova, Andrew V Kossenkov, Erik A Jensen, Valerian Kagan, Yu-Feng Liu, Shu-Yu Fu, Qing-Jian Ye, Yan-Hong Zhou, Lai Wei, Dmitry I Gabrilovich, Jie Zhou
Myeloid-derived suppressor cells (MDSCs) are pathologically activated and relatively immature myeloid cells that have been implicated in the immunological regulation of many pathologic conditions. Phenotypically and morphologically, MDSCs are similar to neutrophils (PMN-MDSCs) and monocytes (M-MDSCs). However, they have potent suppressive activity and distinct gene expression profiles and biochemical characteristics. No or very few MDSCs are observed in steady-state physiological conditions. Therefore, until recently, accumulation of MDSCs was considered a consequence of pathological processes or pregnancy...
January 15, 2018: Nature Medicine
https://www.readbyqxmd.com/read/29334315/interplay-between-p53-and-ink4c-in-spermatogenesis-and-fertility
#3
Hassan Zalzali, Wisam Rabeh, Omar Najjar, Rami Abi Ammar, Mohamad Harajly, Raya Saab
The tumor suppressor p53, and the cyclin-dependent kinase inhibitor Ink4c, have been both implicated in spermatogenesis control. Both p53-/- and Ink4c-/- single knockout male mice are fertile, despite testicular hypertrophy, Leydig cell differentiation defect, and increased sperm count in Ink4c-/- males. To investigate their collaborative roles, we studied p53-/- Ink4c-/- dual knockout animals, and found that male p53-/- Ink4c-/- mice have profoundly reduced fertility. Dual knockout male mice show a marked decrease in sperm count, abnormal sperm morphology and motility, prolongation of spermatozoa proliferation and delay of meiosis entry, and accumulation of DNA damage...
January 15, 2018: Cell Cycle
https://www.readbyqxmd.com/read/29334254/antioxidant-and-anti-proliferative-properties-of-extracts-from-heterotrophic-cultures-of-galdieria-sulphuraria
#4
Claudia Bottone, Rosa Camerlingo, Roberta Miceli, Giovanna Salbitani, Giuseppe Sessa, Giuseppe Pirozzi, Simona Carfagna
This study explores the possibility to use the extremophilic microalga Galdieria sulphuraria (strain 064) as a source of natural biomolecules with beneficial and protective effects on human health. Galdieria was cultivated in heterotrophy conditions and cells extracts for their antioxidant and anti-proliferative properties were tested. Galdieria extracts showed high antioxidant power tested through ABTS assay and revealed high glutathione and phycocyanin contents. Based on Annexin-V FITC/propidium iodide and MTT analysis, algae extracts inhibited the proliferation of human adenocarcinoma A549 cells (51...
January 15, 2018: Natural Product Research
https://www.readbyqxmd.com/read/29334195/exoproteome-profiling-reveals-the-involvement-of-the-foldase-prsa-in-the-cell-surface-properties-and-pathogenesis-of-staphylococcus-aureus
#5
Mei-Hui Lin, Chi-Chun Li, Jwu-Ching Shu, Hao-Wei Chu, Chao-Chin Liu, Chih-Ching Wu
Staphylococcus aureus is a bacterial pathogen that produces and exports many virulence factors that cause diseases in human. PrsA, a membrane-bound foldase, is expressed ubiquitously in Gram-positive bacteria and required for the folding of exported proteins into a stable and active structure. To understand the involvement of PrsA in post-translocational protein folding in S. aureus, a PrsA-deficient mutant of S. aureus HG001 was constructed. Using isobaric tags for relative and absolute quantification (iTRAQ)-based mass spectrometry analyses, the exoproteomes of PrsA mutant and wild type S...
January 15, 2018: Proteomics
https://www.readbyqxmd.com/read/29334191/exogenous-oestrogen-inhibits-genital-transmission-of-cell-associated-hiv-1-in-dmpa-treated-humanized-mice
#6
Nirk E Quispe Calla, Rodolfo D Vicetti Miguel, Melissa E Glick, Jesse J Kwiek, Janelle M Gabriel, Thomas L Cherpes
INTRODUCTION: HIV affects more women than any other life-threatening infectious agent, and most infections are sexually transmitted. HIV must breach the female genital tract mucosal barrier to establish systemic infection, and clinical studies indicate virus more easily evades this barrier in women using depot-medroxyprogesterone acetate (DMPA) and other injectable progestins for contraception. Identifying a potential mechanism for this association, we learned DMPA promotes susceptibility of wild-type mice to genital herpes simplex virus type 2 (HSV-2) infection by reducing genital tissue expression of the cell-cell adhesion molecule desmoglein-1 (DSG-1) and increasing genital mucosal permeability...
January 2018: Journal of the International AIDS Society
https://www.readbyqxmd.com/read/29333726/calcium-current-properties-in-dystrophin-deficient-ventricular-cardiomyocytes-from-aged-mdx-mice
#7
Lena Rubi, Hannes Todt, Helmut Kubista, Xaver Koenig, Karlheinz Hilber
Duchenne muscular dystrophy (DMD), caused by mutations in the gene encoding for the cytoskeletal protein dystrophin, is linked with severe cardiac complications including cardiomyopathy development and cardiac arrhythmias. We and others recently reported that currents through L-type calcium (Ca) channels were significantly increased, and channel inactivation was reduced in dystrophin-deficient ventricular cardiomyocytes derived from the mdx mouse, the most commonly used animal model for human DMD. These gain-of-function Ca channel abnormalities may enhance the risk of Ca-dependent arrhythmias and cellular Ca overload in the dystrophic heart...
January 2018: Physiological Reports
https://www.readbyqxmd.com/read/29333676/ether-%C3%A3-go-go-k-channels-effective-modulators-of-neuronal-excitability
#8
Christiane K Bauer, Jürgen R Schwarz
Mammalian EAG (ether-à-go-go) channels are voltage-gated K+ channels. They are encoded by the KCNH gene family and divided into three subfamilies, eag (Kv10), erg (eag-related gene; Kv11) and elk (eag-like; Kv12). All EAG channel subtypes are expressed in the brain where they effectively modulate neuronal excitability. This Topical Review describes the biophysical properties of each of the EAG channel subtypes, their function in neurons and the neurological diseases induced by EAG channel mutations. In contrast to the function of erg currents in the heart where they contribute to repolarization of the cardiac action potential, erg currents in neurons are involved in the maintenance of the resting potential, setting of action potential threshold and frequency accommodation...
January 15, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29333591/differential-inhibition-of-nav1-7-and-neuropathic-pain-by-hybridoma-produced-and-recombinant-monoclonal-antibodies-that-target-nav1-7-differential-activities-of-nav1-7-targeting-monoclonal-antibodies
#9
Sangsu Bang, Jiho Yoo, Xingrui Gong, Di Liu, Qingjian Han, Xin Luo, Wonseok Chang, Gang Chen, Sang-Taek Im, Yong Ho Kim, Judith A Strong, Ma-Zhong Zhang, Jun-Ming Zhang, Seok-Yong Lee, Ru-Rong Ji
The voltage-gated Na+ channel subtype Nav1.7 is important for pain and itch in rodents and humans. We previously showed that a Nav1.7-targeting monoclonal antibody (SVmab) reduces Na+ currents and pain and itch responses in mice. Here, we investigated whether recombinant SVmab (rSVmab) binds to and blocks Nav1.7 similar to SVmab. ELISA tests revealed that SVmab was capable of binding to Nav1.7-expressing HEK293 cells, mouse DRG neurons, human nerve tissue, and the voltage-sensor domain II of Nav1.7. In contrast, rSVmab showed no or weak binding to Nav1...
January 15, 2018: Neuroscience Bulletin
https://www.readbyqxmd.com/read/29333488/dopamine-development-in-the-mouse-orbital-prefrontal-cortex-is-protracted-and-sensitive-to-amphetamine-in-adolescence
#10
Daniel Hoops, Lauren M Reynolds, Jose-Maria Restrepo-Lozano, Cecilia Flores
The prefrontal cortex (PFC) is divided into subregions, including the medial and orbital prefrontal cortices. Dopamine connectivity in the medial PFC (mPFC) continues to be established throughout adolescence as the result of the continuous growth of axons that innervated the nucleus accumbens (NAcc) prior to adolescence. During this period, dopamine axons remain vulnerable to environmental influences, such as drugs used recreationally by humans. The developmental trajectory of the orbital prefrontal dopamine innervation remains almost completely unstudied...
January 2018: ENeuro
https://www.readbyqxmd.com/read/29333410/transplantation-of-human-umbilical-cord-blood-cd34-cells-into-the-liver-of-newborn-nod-scid-il-2r%C3%AE-null-nsg-mice-after-busulfan-conditioning
#11
Yunmi Ko, Yeon Ho Jeong, Jun Ah Lee
No abstract text is available yet for this article.
December 2017: Blood Research
https://www.readbyqxmd.com/read/29333342/is-there-a-link-between-aging-and-microbiome-diversity-in-exceptional-mammalian-longevity
#12
Graham M Hughes, John Leech, Sébastien J Puechmaille, Jose V Lopez, Emma C Teeling
A changing microbiome has been linked to biological aging in mice and humans, suggesting a possible role of gut flora in pathogenic aging phenotypes. Many bat species have exceptional longevity given their body size and some can live up to ten times longer than expected with little signs of aging. This study explores the anal microbiome of the exceptionally long-lived Myotis myotis bat, investigating bacterial composition in both adult and juvenile bats to determine if the microbiome changes with age in a wild, long-lived non-model organism, using non-lethal sampling...
2018: PeerJ
https://www.readbyqxmd.com/read/29332554/evaluating-the-dose-dependent-mechanism-of-action-of-trazodone-by-estimation-of-occupancies-for-different-brain-neurotransmitter-targets
#13
Luca Settimo, David Taylor
Trazodone is a drug that was introduced in the clinic almost 40 years ago. It is licensed to treat depression, but it is also commonly used off-label to treat insomnia. A recent study shows that it could be promising in preventing neurodegeneration in mice, and clinical trials to assess its possible beneficial effects on dementia and Alzheimer's disease are expected to start soon in humans. In this study, we describe the dose-dependent pharmacology of trazodone by carrying out pharmacokinetic simulations aiming to predict the brain concentrations of trazodone for different drug-dosing regimens and calculating occupancy for 28 different targets for which published trazodone-binding data are available...
January 2018: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/29332456/the-combined-antitumor-effects-of-125i-radioactive-particle-implantation-and-cytokine-induced-killer-cell-therapy-on-xenograft-hepatocellular-carcinoma-in-a-mouse-model
#14
Junyong Zhang, Nian Wu, Zhengrong Lian, Huyi Feng, Qing Jiang, Xianfeng Chen, Jianping Gong, Zhengrong Qiao
The combination of radiotherapy and immunotherapy has shown great promise in eradicating tumors. For example, 125I radioactive particle implantation and cytokine-induced killer cell therapies have demonstrated efficacy in treating hepatocellular carcinoma. However, the mechanism of this combination therapy remains unknown. In this study, we utilized cytokine-induced killer cells obtained from human peripheral blood mononuclear cells along with 125I radioactive particle implantation to treat subcutaneous hepatocellular carcinoma xenograft tumors in BALB/c nude mice...
December 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/29331869/dietary-naringenin-supplementation-attenuates-experimental-autoimmune-encephalomyelitis-by-modulating-autoimmune-inflammatory-responses-in-mice
#15
Junpeng Wang, Ying Qi, Xinli Niu, Hua Tang, Simin Nikbin Meydani, Dayong Wu
Autoimmune disease is highly prevalent in humans. Since conventional therapies have limited efficacy and often come with significant side effects, nutrition may provide an alternative and complementary approach to improving autoimmune disorders. Naringenin, a flavonoid found in citrus fruits, has been shown to have anti-inflammatory and antioxidant properties. Using the experimental autoimmune encephalomyelitis (EAE), a rodent model of human multiple sclerosis, we determined the effect of dietary naringenin (0...
December 11, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29331643/glucagon-like-peptide-1-signaling-inhibits-allergen-induced-lung-il-33-release-and-reduces-group-2-innate-lymphoid-cell-ilc2-cytokine-production-in-vivo
#16
Shinji Toki, Kasia Goleniewska, Sara Reiss, Jian Zhang, Melissa H Bloodworth, Matthew T Stier, Weisong Zhou, Dawn C Newcomb, Lorraine B Ware, Gregg D Stanwood, Aurelio Galli, Kelli L Boyd, Kevin D Niswender, R Stokes Peebles
BACKGROUND: IL-33 is one of the most consistently associated gene candidates for asthma identified by GWAS. Studies in mice and in human cells have confirmed the importance of IL-33 in inducing type-2 cytokine production from both group 2 innate lymphoid cells (ILC2) and Th2 cells. However, there are no pharmacologic agents known to inhibit IL-33 release from airway cells. OBJECTIVE: To determine the effect of glucagon like peptide receptor-1 GLP-1R signaling on aeroallergen-induced airway IL-33 production and release and on innate type-2 airway inflammation...
January 10, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29331507/adropin-an-endocrine-link-between-the-biological-clock-and-cholesterol-homeostasis
#17
Sarbani Ghoshal, Joseph R Stevens, Cyrielle Billon, Clemence Girardet, Sadichha Sitaula, Arthur S Leon, D C Rao, James S Skinner, Tuomo Rankinen, Claude Bouchard, Marinelle V Nuñez, Kimber L Stanhope, Deborah A Howatt, Alan Daugherty, Jinsong Zhang, Matthew Schuelke, Edward P Weiss, Alisha R Coffey, Brian J Bennett, Praveen Sethupathy, Thomas P Burris, Peter J Havel, Andrew A Butler
OBJECTIVE: Identify determinants of plasma adropin concentrations, a secreted peptide translated from the Energy Homeostasis Associated (ENHO) gene linked to metabolic control and vascular function. METHODS: Associations between plasma adropin concentrations, demographics (sex, age, BMI) and circulating biomarkers of lipid and glucose metabolism were assessed in plasma obtained after an overnight fast in humans. The regulation of adropin expression was then assessed in silico, in cultured human cells, and in animal models...
December 30, 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29331423/thymidylate-synthase-prompts-metastatic-progression-through-the-dtmp-associated-emt-process-in-pancreatic-ductal-adenocarcinoma
#18
Muxing Kang, Wen Zheng, Qing Chen, Wenjie Qin, Pengping Li, Shifei Huang, Yizhao Zhou, Lantian Wang, Haolei Cai, Wenjie Lu, Biao Jiang, Qingqu Guo, Jian Chen, Dylan Wan, Jianyu Rao, Yulian Wu
As a fundamental metabolic enzyme, anti-Thymidylate synthase (TS) strategy has been shown to be an effective therapy for human cancers. However, the genuine effects of TS in pancreatic ductal adenocarcinoma (PDA) are still conflicting. We systemically assessed the prognostic value and whether TS associated with malignant progression in PDA. Protein and mRNA expression level of TS were evaluated in en bloc PDA samples, the prognostic effect of TS expressed in cytoplasm or cytonuclear was determined separately in the first time...
January 10, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29331340/hsp72-protects-from-liver-injury-via-attenuation-of-hepatocellular-death-oxidative-stress-and-jnk-signaling
#19
Kateryna Levada, Nurdan Guldiken, Xiaoji Zhang, Giovanna Vella, Fa-Rong Mo, Laura P James, Johannes Haybaeck, Sonja M Kessler, Alexandra K Kiemer, Thomas Ott, Daniel Hartmann, Norbert Hüser, Marianne Ziol, Christian Trautwein, Pavel Strnad
BACKGROUND AND AIMS: Heat shock protein (Hsp) 72 is a molecular chaperone that is upregulated in response to stress and possesses broad cytoprotective functions. To determine its hepatic function, we studied its expression in human liver disorders and its biological significance in newly generated transgenic animals. AIM AND METHODS: Double transgenic mice overexpressing Hsp72 (gene HSPA1A) under the control of a tissue-specific tetracycline-inducible system (Hsp72-LAP mice) were produced...
January 10, 2018: Journal of Hepatology
https://www.readbyqxmd.com/read/29331264/altered-levels-of-the-splicing-factor-muscleblind-modifies-cerebral-cortical-function-in-mouse-models-of-myotonic-dystrophy
#20
Gang Chen, Russell E Carter, John D Cleary, Tammy S Reid, Laura P Ranum, Maurice S Swanson, Timothy J Ebner
Myotonic dystrophy (DM) is a progressive, multisystem disorder affecting skeletal muscle, heart, and central nervous system. In both DM1 and DM2, microsatellite expansions of CUG and CCUG RNA repeats, respectively, accumulate and disrupt functions of alternative splicing factors, including muscleblind (MBNL) proteins. Grey matter loss and white matter changes, including the corpus callosum, likely underlie cognitive and executive function deficits in DM patients. However, little is known how cerebral cortical circuitry changes in DM...
January 10, 2018: Neurobiology of Disease
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