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https://www.readbyqxmd.com/read/29776962/shp-1-acts-as-a-tumor-suppressor-in-hepatocarcinogenesis-and-hcc-progression
#1
Liang-Zhi Wen, Kai Ding, Ze-Rui Wang, Chen-Hong Ding, Shu-Juan Lei, Jin-Pei Liu, Chuan Yin, Ping-Fang Hu, Jin Ding, Wan-Sheng Chen, Xin Zhang, Wei-Fen Xie
Src homology region 2 (SH2) domain-containing phosphatase 1 (SHP-1, also known as PTPN6), is a nonreceptor protein tyrosine phosphatase that acts as a negative regulator of inflammation. Emerging evidence indicates that SHP-1 plays a role in inhibiting the progression of hepatocellular carcinoma (HCC). However, the role of SHP-1 in hepatocarcinogenesis remains unknown. Here we find that levels of SHP-1 are significantly downregulated in human HCC tissues compared with those in noncancerous tissues (P < 0...
May 18, 2018: Cancer Research
https://www.readbyqxmd.com/read/29775726/pathological-effects-of-concurrent-administration-of-aflatoxin-b-1-and-fowl-adenovirus-4-in-broiler-chicks
#2
Muhammad Noman Naseem, Muhammad Kashif Saleemi, Ahrar Khan, Aisha Khatoon, Shafia Tehseen Gul, Farzana Rizvi, Ijaz Ahmad, Ahad Fayyaz
The current study was designed to investigate pathological effects fowl adenovirus in broilers exposed to aflatoxin B1 . Fowl Adenovirus-4 (FAdV-4) infection is remerging in all types of poultry birds in Pakistan. Poultry feed contamination with mycotoxin (aflatoxin) is another important global issue. A total of 125 a-day old broiler birds were divided into six equal groups. Group A served as control. B and C groups were administered with aflatoxin B1 (AFB1 ) 100 and 200 μg/kg feed. Group D was infected with FAdV-4 while groups E and F administered with both AFB1 (100 & 200 μg/kg) along with FAdV-4...
May 15, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29775724/biological-activities-and-phytocompounds-of-northwest-algeria-ajuga-iva-l-extracts-partial-identification-of-the-antibacterial-fraction
#3
Saida Medjeldi, Lamjed Bouslama, Amina Benabdalla, Rim Essid, Soumaya Haou, Salem Elkahoui
The use of synthetic food additive and the appearance of antibiotic resistance are at the basis of important human health problems. The substitution of synthetic compounds with new natural substances extracted from plants or microorganisms is therefore the ideal solution to this scourge. The objective of this work was to evaluate the phyto-constituents (polyphenols, flavonoids and condensed tannins), and to test the biological activities (antioxidant, antibacterial and antiviral) of the Ajuga iva (L) aerial part extracts...
May 15, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29775038/postinfectious-bronchiolitis-obliterans
#4
(no author information available yet)
La bronquiolitis obliterante es una enfermedad pulmonar crónica infrecuente y grave producto de una lesión del tracto respiratorio inferior. En nuestro país, es más frecuente observarla secundaria a una lesión viral grave, en especial, por adenovirus. La bronquiolitis obliterante se caracteriza por la oclusión parcial o total del lumen de los bronquiolos respiratorios y terminales por tejido inflamatorio y fibrosis, que produce la obstrucción crónica de la vía aérea. Este consenso discute el estado actual del conocimiento en las diferentes áreas de la bronquiolitis obliterante secundaria a una lesión infecciosa...
June 1, 2018: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/29772755/temozolomide-enhances-triple-negative-breast-cancer-virotherapy-in-vitro
#5
Rodolfo Garza-Morales, Roxana Gonzalez-Ramos, Akiko Chiba, Roberto Montes de Oca-Luna, Lacey R McNally, Kelly M McMasters, Jorge G Gomez-Gutierrez
Triple-negative breast cancer (TNBC) is one of the most aggressive types of cancer, and treatment is limited to chemotherapy and radiation. Oncolytic virotherapy may be a promising approach to treat TNBC. However, oncolytic adenovirus (OAd)-based mono-therapeutic clinical trials have resulted in modest outcomes. The OAd potency could be increased by chemotherapy-induced autophagy, an intracellular degradation system that delivers cytoplasmic constituents to the lysosome. In this study, the ability of alkylating agent temozolomide (TMZ)-induced autophagy to increase OAd replication and oncolysis in TNBC cells was evaluated...
May 17, 2018: Cancers
https://www.readbyqxmd.com/read/29772486/quantitative-microbial-risk-assessment-of-microbial-source-tracking-markers-in-recreational-water-contaminated-with-fresh-untreated-and-secondary-treated-sewage
#6
Warish Ahmed, Kerry A Hamilton, Aldo Lobos, Bridie Hughes, Christopher Staley, Michael J Sadowsky, Valerie J Harwood
Microbial source tracking (MST) methods have provided the means to identify sewage contamination in recreational waters, but the risk associated with elevated levels of MST targets such as sewage-associated Bacteroides HF183 and other markers is uncertain. Quantitative microbial risk assessment (QMRA) modeling allows interpretation of MST data in the context of the risk of gastrointestinal (GI) illness caused by exposure to known reference pathogens. In this study, five sewage-associated, quantitative PCR (qPCR) MST markers [Bacteroides HF183 (HF183), Methanobrevibacter smithii nifH (nifH), human adenovirus (HAdV), human polyomavirus (HPyV) and pepper mild mottle virus (PMMoV)] were evaluated to determine at what concentration these nucleic acid markers reflected a significant health risk from exposure to fresh untreated or secondary treated sewage in beach water...
May 14, 2018: Environment International
https://www.readbyqxmd.com/read/29772028/randomized-phase-i-trial-hiv-core-003-depletion-of-serum-amyloid-p-component-and-immunogenicity-of-dna-vaccination-against-hiv-1
#7
Nicola J Borthwick, Thirusha Lane, Nathifa Moyo, Alison Crook, Jung Min Shim, Ian Baines, Edmund G Wee, Philip N Hawkins, Julian D Gillmore, Tomáš Hanke, Mark B Pepys
BACKGROUND: The failure of DNA vaccination in humans, in contrast to its efficacy in some species, is unexplained. Observational and interventional experimental evidence suggests that DNA immunogenicity may be prevented by binding of human serum amyloid P component (SAP). SAP is the single normal DNA binding protein in human plasma. The drug (R)-1-[6-[(R)-2-carboxypyrrolidin-1-yl]-6-oxo-hexanoyl]pyrrolidine-2-carboxylic acid (CPHPC, miridesap), developed for treatment of systemic amyloidosis and Alzheimer's disease, depletes circulating SAP by 95-99%...
2018: PloS One
https://www.readbyqxmd.com/read/29766024/integrating-hdad5-35-vectors-as-a-new-platform-for-hsc-gene-therapy-of-hemoglobinopathies
#8
Chang Li, Nikoletta Psatha, Hongjie Wang, Manvendra Singh, Himanshu Bhusan Samal, Wenli Zhang, Anja Ehrhardt, Zsuzsanna Izsvák, Thalia Papayannopoulou, André Lieber
We generated an integrating, CD46-targeted, helper-dependent adenovirus HDAd5/35++ vector system for hematopoietic stem cell (HSC) gene therapy. The ∼12-kb transgene cassette included a β-globin locus control region (LCR)/promoter driven human γ-globin gene and an elongation factor alpha-1 (EF1α)-mgmtP140K expression cassette, which allows for drug-controlled increase of γ-globin-expressing erythrocytes. We transduced bone marrow lineage-depleted cells from human CD46-transgenic mice and transplanted them into lethally irradiated recipients...
June 15, 2018: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/29765912/oncolytic-adenovirus-ad657-for-systemic-virotherapy-against-prostate-cancer
#9
Tien V Nguyen, Catherine M Crosby, Gregory J Heller, Zachary I Mendel, Mary E Barry, Michael A Barry
Background: Human species C adenovirus serotype 5 (Ad5) is the archetype oncolytic adenovirus and has been used in the vast majority of preclinical and clinical tests. While Ad5 can be robust, species C Ad6 has lower seroprevalence, side effects, and appears to be more potent as a systemic therapy against a number of tumors than Ad5. Historically, there have only been four species C human adenoviruses: serotypes 1, 2, 5, and 6. More recently a new species C adenovirus, Ad57, was identified...
2018: Oncolytic Virotherapy
https://www.readbyqxmd.com/read/29765408/the-interaction-between-bmal1-and-per2-in-mouse-bmsc-osteogenic-differentiation
#10
Haiya Zhuo, Yuhong Wang, Qing Zhao
The circadian clock is a system that controls endogenous time of organisms, and it regulates the physiology and behavior of bodies. The transcription factors Brain and Muscle ARNT-like Protein 1 (BMAL1) and Period2 (Per2) are components of the circadian clock, and they play vital roles in circadian clock function. Both Bmal1-/- mice and Per2-/- mice display obvious bone volume changes. In this study, we inhibited the expression of Bmal1 in bone marrow-derived mesenchymal stem cells (BMSCs) using a lentiviral vector harboring RNAi sequences, which increased the osteogenic differentiation capability of BMSCs...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29765214/tiotropium-inhibits-methacholine-induced-extracellular-matrix-production-via-%C3%AE-catenin-signaling-in-human-airway-smooth-muscle-cells
#11
Yating Huo, Lili Guan, Jiawen Xu, Luqian Zhou, Rongchang Chen
Background: Airway remodeling is an important feature of chronic obstructive pulmonary disease (COPD) that is associated with disease severity and irreversible airflow limitation. An extensive alteration of the extracellular matrix (ECM) surrounding the airway smooth muscle (ASM) bundle is one of the pathological manifestations of airway remodeling, which contributes to the decline in lung function. Tiotropium, a long-acting inhaled muscarinic receptor antagonist, has been confirmed to play a role in preventing airway remodeling including ECM deposition beyond bronchodilation in vivo, but the relationship between ASM cell (ASMC) relaxation and ECM production remains unclear...
2018: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29764161/the-emerging-role-of-oncolytic-virus-therapy-against-cancer
#12
Luke Russell, Kah-Whye Peng
This review discusses current clinical advancements in oncolytic viral therapy, with a focus on the viral platforms approved for clinical use and highlights the benefits each platform provides. Three oncolytic viruses (OVs), an echovirus, an adenovirus, and a herpes simplex-1 virus, have passed governmental regulatory approval in Latvia, China, and the USA and EU. Numerous other recombinant viruses from diverse families are in clinical testing in cancer patients and we highlight the design features of selected examples, including adenovirus, herpes simplex virus, measles virus, retrovirus, reovirus, vaccinia virus, vesicular stomatitis virus...
April 2018: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/29763816/design-of-a-phase-3-trial-of-intracoronary-administration-of-human-adenovirus-5-encoding-human-adenylyl-cyclase-type-6-rt-100-gene-transfer-in-patients-with-heart-failure-with-reduced-left-ventricular-ejection-fraction-the-flourish-clinical-trial
#13
William F Penny, Timothy D Henry, Matthew W Watkins, Amit N Patel, H Kirk Hammond
The prognosis of patients with HFrEF remains poor despite the use of current medical and device therapies. Preclinical studies of HFrEF using IC delivery of RT-100, a replication deficient, E1/E3-deleted human adenovirus 5 encoding human AC6 was associated with favorable effects on LV function and remodeling. A recent multicenter, double-blind, placebo-controlled, phase 2 study demonstrated the safety of IC delivery of RT-100 in HFrEF patients and potential efficacy at the higher doses. This phase 2 dose finding study, which included doses not expected to be effective, identified a potential reduction in congestive heart failure admissions in the AC6-treated group one year after randomization...
April 6, 2018: American Heart Journal
https://www.readbyqxmd.com/read/29763588/glycyrrhizin-ameliorates-inflammatory-pain-by-inhibiting-microglial-activation-mediated-inflammatory-response-via-blockage-of-the-hmgb1-tlr4-nf-kb-pathway
#14
Xiaojuan Sun, Hongyou Zeng, Qingsong Wang, Qingwen Yu, Jianxiong Wu, You Feng, Peng Deng, Hongxing Zhang
Chronic inflammatory pain is a severe clinical problem that greatly affects patients' quality of life and causes huge economic burden. Microglia-mediated neuroinflammation exerts critical roles in the pathogenic progression of inflammatory pain. Recent evidence corroborates the anti-inflammatory and neuroprotective efficacy of glycyrrhizin; however, its function in inflammatory pain remains poorly elucidated. In the present study, glycyrrhizin suppressed LPS-induced activation of microglial cell BV2 by inhibiting NO production and expression of microglial marker IBA-1...
May 12, 2018: Experimental Cell Research
https://www.readbyqxmd.com/read/29762844/free-fatty-acids-mediates-human-umbilical-vein-endothelial-cells-inflammation-through-toll-like-receptor-4
#15
L Chen, C-X Yu, B Song, W Cai, C Liu, Q-B Guan
OBJECTIVE: To investigate the role of Toll-like receptor-4 (TLR4) in the free fatty acids (FFAs) induced human umbilical vein endothelial cells (HUVECs) inflammation and to explore the underlying mechanisms. MATERIALS AND METHODS: HUVECs and HEK293 cell lines were obtained from Shanghai Type Culture Collection. Cell counting kit-8 (CCK8) and flow cytometry (FCM) were performed to examine the cell viability and apoptosis rate of HUVECs induced by FFAs treatments with or without infection of toll-like receptor-4 interference (TLR4i) adenovirus...
April 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29762251/prospective-assessment-of-adenovirus-infection-in-pediatric-kidney-transplant-recipients
#16
Rachel M Engen, Meei-Li Huang, Giulia E Park, Jodi M Smith, Ajit P Limaye
BACKGROUND: Adenovirus infection is associated with graft dysfunction and graft loss in pediatric cardiac, lung, and liver transplants in prior retrospective studies, but data in pediatric kidney transplant recipients is limited. METHODS: We conducted a prospective single-center cohort study of 75 consecutive pediatric kidney transplant recipients who underwent monthly screening for adenovirus viremia and symptom assessment for 2 years posttransplant. RESULTS: Adenovirus viremia was detected in 11 (14...
May 2, 2018: Transplantation
https://www.readbyqxmd.com/read/29760186/hypertrophic-cardiomyopathy-mutations-increase-myofilament-ca-2-buffering-alter-intracellular-ca-2-handling-and-stimulate-ca-2-dependent-signalling
#17
Paul Robinson, Xing Liu, Alexander Sparrow, Suketu Patel, Yin Hua Zhang, Barbara Casadei, Hugh Watkins, Charles S Redwood
Mutations in thin filament regulatory proteins that cause hypertrophic cardiomyopathy (HCM) increase myofilament Ca2+ -sensitivity. Mouse models exhibit increased Ca2+ buffering and arrhythmias, and we hypothesized that these changes are primary effects of the mutations (independent of compensatory changes) and that increased Ca2+ - buffering and altered Ca2+ -handling contribute to HCM pathogenesis via activation of Ca2+ -dependent signalling. Here, we determined the primary effects of HCM mutations on intracellular Ca2+ -handling and Ca2+ -dependent signalling in a model system possessing Ca2+ -handling mechanisms and contractile protein isoforms close to human in the absence of potentially confounding remodeling...
May 14, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29759071/metformin-attenuates-triglyceride-accumulation-in-hepg2-cells-through-decreasing-stearyl-coenzyme-a-desaturase-1-expression
#18
Xiaopeng Zhu, Hongmei Yan, Mingfeng Xia, Xinxia Chang, Xi Xu, Liu Wang, Xiaoyang Sun, Yan Lu, Hua Bian, Xiaoying Li, Xin Gao
BACKGROUND: The prevalence of nonalcoholic fatty liver disease (NAFLD) has increased worldwide. Metformin decreases triglyceride (TG) accumulation in hepatocytes in vivo and in vitro. Stearyl-coenzyme A desaturase 1 (SCD1) knockout mice also show decreased liver TG accumulation; however, whether SCD1 plays a role in the effect of metformin on TG accumulation is unknown. Therefore, the aim of this study was to investigate whether SCD1 mediated the effect of metformin on TG accumulation...
May 14, 2018: Lipids in Health and Disease
https://www.readbyqxmd.com/read/29758552/downregulation-of-s100a4-alleviates-cardiac-fibrosis-via-wnt-%C3%AE-catenin-pathway-in-mice
#19
LiJun Qian, Jian Hong, YanMei Zhang, MengLin Zhu, XinChun Wang, YanJuan Zhang, Ming Chu, Jing Yao, Di Xu
BACKGROUND/AIMS: Cardiac fibrosis is a pathological change leading to cardiac remodeling during the progression of myocardial ischemic diseases, and its therapeutic strategy remains to be explored. S100A4, a calcium-binding protein, participates in fibrotic diseases with an unclear mechanism. This study aimed to investigate the role of S100A4 in cardiac fibrosis. METHODS: Cardiac fibroblasts from neonatal C57BL/6 mouse hearts were isolated and cultured. Myocardial infarction was induced by ligating the left anterior descending coronary artery (LAD)...
May 7, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29757891/spinal-epidural-abscess-in-an-infant-presenting-as-fever-and-respiratory-distress
#20
Katherine M Gupta, Khoon-Yen Tay
A 9-month-old healthy female presented during winter to the emergency department with a chief complaint of fever and prominent respiratory symptoms. She was discharged on oseltamivir with a presumptive diagnosis of influenza. She returned to the emergency department 2 days later with continued fever and more upper respiratory symptoms. She was admitted for intravenous hydration to the observation unit with a diagnosis of viral illness (with viral testing that returned positive for adenovirus) and dehydration...
May 2, 2018: Pediatric Emergency Care
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