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https://www.readbyqxmd.com/read/28646039/monocyte-adhesion-migration-and-extracellular-matrix-breakdown-is-regulated-by-integrin-%C3%AE-v%C3%AE-3-in-mycobacterium-tuberculosis-infection
#1
Sara Brilha, Riccardo Wysoczanski, Ashley M Whittington, Jon S Friedland, Joanna C Porter
In tuberculosis (TB), the innate inflammatory immune response drives tissue destruction, morbidity, and mortality. Monocytes secrete matrix metalloproteinases (MMPs), which have key roles in local tissue destruction and cavitation. We hypothesized that integrin signaling might regulate monocyte MMP secretion in pulmonary TB during cell adhesion to the extracellular matrix (ECM). Adhesion to type I collagen and fibronectin by Mycobacterium tuberculosis-stimulated monocytes increased MMP-1 gene expression by 2...
June 23, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28645914/bile-salt-homeostasis-in-normal-and-bsep-gene-knock-out-rats-with-single-and-repeated-doses-of-troglitazone
#2
Yaofeng Cheng, Shenjue Chen, Chris Freeden, Weiqi Chen, Yueping Zhang, Pamela Abraham, David Nelson, William G Humphreys, Jinpin Gan, Yurong Lai
The interference of bile acid secretion through bile salt export pump (BSEP) inhibition was one of the mechanisms for troglitazone (TGZ) induced hepatotoxicity. Here we investigated the impact of single or repeated oral doses of TGZ (200 mg/kg/day, 7 days) on bile acid homoeostasis in wild-type (WT) and Bsep KO rats. Following oral doses, plasma exposures of TGZ were not different between WT and KO rats, and were similar on Day-1 and Day-7. However, plasma exposures of the major metabolite, troglitazone sulfate (TS), in KO rats were 7...
June 23, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28642028/discovery-of-novel-5-oxa-2-6-diazaspiro-3-4-oct-6-ene-derivatives-as-potent-selective-and-orally-available-somatostatin-receptor-subtype-5-sstr5-antagonists-for-treatment-of-type-2-diabetes-mellitus
#3
Hideki Hirose, Takeshi Yamasaki, Masaki Ogino, Ryo Mizojiri, Yumiko Tamura-Okano, Hiroaki Yashiro, Yo Muraki, Yoshihide Nakano, Jun Sugama, Akito Hata, Shinji Iwasaki, Masanori Watanabe, Tsuyoshi Maekawa, Shizuo Kasai
Somatostatin receptor subtype 5 (SSTR5) has emerged as a novel attractive drug target for type 2 diabetes mellitus. Starting from N-benzyl azetidine derivatives 1 and 2 as in-house hit compounds, we explored the introduction of a carboxyl group into the terminal benzene of 1 to enhance SSTR5 antagonistic activity by the combination of the substituents at the 3-position of the isoxazoline. Incorporation of a carboxyl group at the 4-position of the benzene ring resulted in a significant enhancement in potency, however, the 4-benzoic acid derivative 10c exhibited moderate human ether-a-go-go related gene (hERG) inhibitory activity...
June 9, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28634815/autoimmune-diabetes-induced-by-pd-1-inhibitor-retrospective-analysis-and-pathogenesis-a-case-report-and-literature-review
#4
Marie-Léa Gauci, Pauline Laly, Tiphaine Vidal-Trecan, Barouyr Baroudjian, Jérémy Gottlieb, Nika Madjlessi-Ezra, Laetitia Da Meda, Isabelle Madelaine-Chambrin, Martine Bagot, Nicole Basset-Seguin, Cécile Pages, Samia Mourah, Philippe Boudou, Céleste Lebbé, Jean-François Gautier
Anti-PD-1 antibody treatment is approved in advanced melanoma and provides median overall survival over 24 months. The main treatment-related side effects are immune-related adverse events, which include rash, pruritus, vitiligo, thyroiditis, diarrhoea, hepatitis and pneumonitis. We report a case of autoimmune diabetes related to nivolumab treatment. A 73-year-old man was treated in second line with nivolumab at 3 mg/kg every two weeks for metastatic melanoma. At 6 weeks of treatment, he displayed diabetic ketoacidosis...
June 20, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28634242/type-ii-secretion-substrates-of-legionella-pneumophila-translocate-out-of-the-pathogen-occupied-vacuole-via-a-semipermeable-membrane
#5
Hilary K Truchan, Harry D Christman, Richard C White, Nakisha S Rutledge, Nicholas P Cianciotto
Legionella pneumophila replicates in macrophages in a host-derived phagosome, termed the Legionella-containing vacuole (LCV). While the translocation of type IV secretion (T4S) effectors into the macrophage cytosol is well established, the location of type II secretion (T2S) substrates in the infected host cell is unknown. Here, we show that the T2S substrate ProA, a metalloprotease, translocates into the cytosol of human macrophages, where it associates with the LCV membrane (LCVM). Translocation is detected as early as 10 h postinoculation (p...
June 20, 2017: MBio
https://www.readbyqxmd.com/read/28633807/differential-induction-of-atf3-and-ho-1-in-myeloid-cells-and-keratinocytes-via-dimethylfumarate-or-cyclosporine-a
#6
Stefanie Müller, Nikola Smatlik, Marc Burian, Kamran Ghoreschi, Martin Röcken, Amir S Yazdi
BACKGROUND: Chronic inflammatory skin diseases are characterized by controlled proliferation of keratinocytes. Here, activating transcription factor 3 (ATF3) might play a fundamental role. In these inflammatory diseases, proliferation is controlled and only rarely leads to cancer development which can be supported by an inflammatory microenvironment. ATF3 is a dual function protein as it suppresses pro-inflammatory IL-6 and IL-8, but also acts as a pro-oncogenic factor by the suppression of p53...
June 12, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28633071/structural-characterization-of-the-immunostimulatory-exopolysaccharide-produced-by-leuconostoc-mesenteroides-strain-ntm048
#7
Chiaki Matsuzaki, Chikahiro Takagaki, Yusuke Tomabechi, Lennart S Forsberg, Christian Heiss, Parastoo Azadi, Kenji Matsumoto, Toshihiko Katoh, Koji Hosomi, Jun Kunisawa, Kenji Yamamoto, Keiko Hisa
The exopolysaccharide (EPS) produced by probiotic Leuconostoc mesenteroides subsp. mesenteroides strain NTM048 has been reported to be an immunostimulant that enhances mucosal IgA production. In this study, we found that intranasal administration of mice with the EPS and an antigen (ovalbumin) resulted in secretion of antigen-specific IgA and IgG in the airway mucosa and the serum, suggesting that the EPS has the adjuvant activity for use with mucosal vaccination. Methylation analysis coupled to GC-MS, and 1D and 2D NMR spectroscopy revealed that 94% of the EPS consists of an α-(1 → 6) glucan containing 4% of 1→3-linked α-glucose branches...
June 15, 2017: Carbohydrate Research
https://www.readbyqxmd.com/read/28631500/pancreatic-%C3%AE-cell-survival-and-proliferation-are-promoted-by-protein-kinase-g-type-i%C3%AE-and-downstream-regulation-of-akt-foxo1
#8
Janica C Wong, Van Vo, Priyatham Gorjala, Ronald R Fiscus
Early studies showed nitric oxide as a pro-inflammatory-cytokine-induced toxin involved in pancreatic β-cell destruction during pathogenesis of type-1 diabetes. However, nitric oxide has both cytotoxic and cytoprotective effects on mammalian cells, depending on concentration and micro-environmental surroundings. Our studies have shown that low/physiological-level nitric oxide selectively activates protein kinase G type Iα isoform, promoting cytoprotective/pro-cell-survival effects in many cell types. In bone marrow-derived stromal/mesenchymal stem cells, protein kinase G type Iα mediates autocrine effects of nitric oxide and atrial natriuretic peptide, promoting DNA-synthesis/proliferation and cell survival...
June 1, 2017: Diabetes & Vascular Disease Research
https://www.readbyqxmd.com/read/28630066/porphyromonas-gulae-activates-unprimed-and-ifn%C3%AE-primed-macrophages-via-the-pattern-recognition-receptors-tlr-2-tlr-4-and-nod2
#9
James A Holden, Neil M O'Brien-Simpson, Jason C Lenzo, Rebecca K H Orth, Ashley Mansell, Eric C Reynolds
Porphyromonas gulae is an anaerobic, Gram-negative coccobacillus that has been associated with periodontal disease in companion animals. The aims of this study were to analyse the ligation of pattern recognition receptors by P. gulae and the subsequent activation of macrophages. Exposure of HEK cells transfected with Toll-like receptors or NOD-like receptors to P. gulae resulted in the ligation of TLR2, TLR4 and NOD2. The effect of this engagement of receptors was investigated by measuring the synthesis of nitric oxide, CD86 expression and inflammatory cytokine production using wild type, TLR2-/- and TLR4-/- macrophages...
June 19, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28628803/mucoepidermoid-carcinoma-associated-expression-of-muc5ac-muc5b-and-mucin-type-carbohydrate-antigen-sialyl-tn-in-the-parotid-gland
#10
Johannes H Matse, Wiresh K Bharos, Enno C I Veerman, Elisabeth Bloemena, Jan G M Bolscher
OBJECTIVES: The aberrant expression of mucins and mucin-type carbohydrates has been described in many types of cancer, including mucoepidermoid carcinoma (MEC), a malignant salivary gland tumor. In this study, we examined the aberrant expression patterns of mucins (MUC1, MUC4, MUC5AC and MUC5B), simple mucin-type carbohydrate antigens (Tn, sialyl-Tn and T) and mature carbohydrate antigens (Lewis(a) and sulfo-Lewis(a) antigens) in MEC originating from the parotid gland, which normally does not secrete mucins...
June 13, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28627648/characterization-of-a-blandm%C3%A2-1%C3%A2-harboring-plasmid-from-a-salmonella%C3%A2-enterica-clinical-isolate-in-china
#11
Jinwei Huang, Shanshan Deng, Jianmin Ren, Jianfei Tu, Meiping Ye, Minggui Wang
The plasmid-mediated transmission of antibiotic resistance genes has been reported to be involved in the development of antibiotic resistance in bacteria, and poses a serious threat for the success of bacterial infection treatment and human health worldwide. The present study used a 454 GS‑FLX pyrosequencing system to determine the ~140 kb nucleotide sequence of plasmid pHS36‑NDM, which was identified in a Salmonella Stanley isolate from the stool sample of an 11‑month‑old girl at Lishui Central Hospital, China, and which contains a New Delhi metallo‑β‑lactamase‑1 (NDM‑1) carbapenem resistance gene (blaNDM‑1)...
June 8, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28626770/upregulation-of-tumor-necrosis-factor-%C3%AE-induced-protein-8-like-2-mrna-is-negatively-correlated-with-serum-concentrations-of-tumor-necrosis-factor-%C3%AE-and-interleukin-6-in-type-2-diabetes-mellitus
#12
Yongliang Liu, Xinmei Wang, Yan Zhao, Peiqing Zhao, Lianqing Wang, Qiaoli Zhai, Xiaowei Zhang, Wenxiu Tian, Xinxin Xiang, Tao Li
BACKGROUND: Tumor necrosis factor-α-induced protein 8-like 2 (TIPE2 or TNFAIP8L2) is a negative regulator of natural and adaptive immunity. The role of TIPE2 in type 2 diabetes mellitus (T2DM) remains unknown, although TIPE2 plays key roles in preserving inflammatory homeostasis. METHODS: TIPE2 expression was measured by Western blotting and real-time polymerase chain reaction (RT-PCR) in peripheral blood mononuclear cells (PBMCs) isolated from T2DM patients and healthy controls, and tumor necrosis factor-α (TNF-α), high-sensitivity C-reactive protein (hsCRP), interleukin 6 (IL-6), and other related biometabolic parameters were detected using a nephelometer or by ELISA...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28626164/diagnostic-significance-of-measuring-vascular-endothelial-growth-factor-for-the-differentiation-between-malignant-and-tuberculous-pleural-effusion
#13
Hak-Ryul Kim, Byoung-Ryun Kim, Rae-Kil Park, Kwon-Ha Yoon, Eun-Taik Jeong, Ki-Eun Hwang
Malignancy and tuberculosis are common causes of lymphocytic exudative pleural effusion. However, it is occasionally difficult to differentiate malignant pleural effusion from tuberculous pleural effusion. Vascular endothelial growth factor (VEGF) is a critical cytokine in the pathogenesis of malignant pleural effusion. Endocan is a dermatan sulfate proteoglycan that is secreted by endothelial cells. Importantly, endocan mediates the vascular growth-promoting action of VEGF. The aim of this study was to evaluate the diagnostic significance of VEGF and endocan in pleural effusion...
2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28625894/evaluation-of-protective-immunity-induced-by-dna-vaccination-with-genes-encoding-toxoplasma-gondii-gra17-and-gra23-against-acute-toxoplasmosis-in-mice
#14
Wei-Ning Zhu, Jin-Lei Wang, Kai Chen, Dong-Mei Yue, Xiao-Xuan Zhang, Si-Yang Huang, Xing-Quan Zhu
Toxoplasma gondii, an obligatory intracellular protozoan, can cause serious public health problems and economic losses worldwide. Two novel dense granule proteins (GRA17 and GRA23) were recently identified as T. gondii-secreted proteins which are localized to the parasitophorous vacuole membrane (PVM) and can mediate the movement of small molecules between the host cell and parasitophorous vacuole (PV). In the present study, we evaluated the protective immunity induced by DNA vaccination with genes encoding GRA17 and GRA23 against acute toxoplasmosis in mice...
June 15, 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/28622599/adrenergic-regulation-of-cytoplasmic-structures-related-to-secretory-processes-in-pig-pinealocytes-an-ultrastructural-quantitative-study
#15
Barbara Przybylska-Gornowicz, Bogdan Lewczuk, Natalia Ziółkowska, Magdalena Prusik
Two structures, considered as secretory in nature, are present in the pinealocytes in of the domestic pig show the presence of two structures, which are considered as secretory in nature - the dense core vesicles (DCV) and the membrane bounded (dense) bodies (MBB). The latter are extremely numerous in pig pinealocytes (they occupy 6-20% of the cytoplasm), and the number of MBB changes under different physiological and experimental conditions. Norepinephrine is the main neurotransmitter that regulates the secretion of pineal melatonin...
June 9, 2017: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/28621297/endoscopic-ultrasound-with-or-without-fine-needle-aspiration-has-a-meaningful-impact-on-clinical-care-in-the-pediatric-population
#16
Amit Raina, Maire A Conrad, Benjamin Sahn, Alireza Sedarat, Gregory G Ginsberg, Nuzhat A Ahmad, Vinay Chandrasekhara, Petar Mamula, Michael L Kochman
BACKGROUND AND OBJECTIVES: The safety and utility of endoscopic ultrasound (EUS) for the evaluation and management of gastrointestinal (GI) tract disorders among adults has been established. The literature on safety and efficacy in a pediatric referral population (under 21 years of age) is limited. We hypothesized that EUS is safe and useful in the pediatric population. We reviewed the pediatric EUS experience at a single tertiary-care system. We describe the indications, findings, safety, technical success rate, and impact on clinical outcomes...
May 2017: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/28620967/contribution-of-card9-mediated-signaling-to-wound-healing-in-skin
#17
Emi Kanno, Kazuyoshi Kawakami, Hiromasa Tanno, Aiko Suzuki, Noriko Sato, Airi Masaki, Ayano Imamura, Naoyuki Takagi, Takayuki Miura, Hideki Yamamoto, Keiko Ishii, Hiromitsu Hara, Yoshimichi Imai, Ryoko Maruyama, Masahiro Tachi
The inflammatory response after skin injury involves the secretion of a variety of cytokines and growth factors that are necessary for tissue repair. Caspase recruitment domain-containing protein 9 (CARD9) is an essential signaling adaptor molecule for NF-κB activation upon triggering through C-type lectin receptors (CLRs), which are expressed in macrophages and dendritic cells. However, the role of CARD9 in inflammatory responses at the wound site has not been elucidated. In the present study, we analyzed the role of CARD9 in the healing process of skin wounds...
June 16, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28616090/histochemical-and-immunohistochemical-study-of-mucinous-rectal-carcinoma
#18
C V Lungulescu, S Răileanu, G Afrem, B S Ungureanu, D N Florescu, I A Gheonea, S Șovăilă, Ș Crăițoiu
Colorectal cancer (CRC) is a major health problem worldwide. The objective of our study was to assess the histopathological (HP) and immunohistochemical (IHC) profile of mucins from signet ring (SR) and mucinous rectal carcinoma, while evaluating their value as a prognostic factor and muco-secretive ability. The HP study (76 cases) included 4 categories of patients: pure mucinous (PM), mixed mucinous components (MM) (50-80% of the tumor cells), mixed mucinous components (Mm) (< 50% of the tumor cells) and signet ring (SR)...
April 2017: Journal of Medicine and Life
https://www.readbyqxmd.com/read/28613965/effect-of-saliva-collection-methods-and-oral-hygiene-on-salivary-biomarkers
#19
Allisson Benatti Justino, Renata Roland Teixeira, Leonardo Gomes Peixoto, Olga Lucia Bocanegra Jaramillo, Foued Salmen Espindola
The aim of this study was to evaluate the influence of unstimulated and stimulated saliva collection methods, as well as tooth brushing, on the secretion rate of salivary total protein, nitrite, total antioxidant capacity and alpha-amylase. Saliva of 14 healthy individuals were collected with stimulation using Salivette(®), Parafilm(®) and chewing gum and without stimulation from spit with and without fluid accumulation, before and after oral hygiene. Total protein, nitrite, total antioxidant capacity and alpha-amylase concentration (sAA) were evaluated...
June 14, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28611861/effects-of-six-kinds-of-sodium-glucose-cotransporter-2-inhibitors-on-metabolic-parameters-and-summarized-effect-and-its-correlations-with-baseline-data
#20
Hidekatsu Yanai, Mariko Hakoshima, Hiroki Adachi, Akiko Kawaguchi, Yoko Waragai, Tadanao Harigae, Yoshinori Masui, Kouki Kakuta, Hidetaka Hamasaki, Hisayuki Katsuyama, Tomoko Kaga, Akahito Sako
BACKGROUND: Sodium-glucose cotransporter 2 inhibitor (SGLT2i) blocks reabsorption of glucose by inhibiting SGLT2 in kidney, promotes the renal excretion of glucose and improves blood glucose control without requiring insulin secretion. Anti-atherosclerotic effects of SGLT2is have not been fully elucidated until today. METHODS: We retrospectively picked up patients with type 2 diabetes who had been continuously prescribed SGLT2i for 3 months or more between April 2014 and December 2016 by a chart-based analysis, and compared metabolic parameters including coronary risk factors before the SGLT2i treatment with the data at 3 and 6 months after the SGLT2i treatment started...
July 2017: Journal of Clinical Medicine Research
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