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galectin 9

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https://www.readbyqxmd.com/read/28705047/galectin-3-correlates-with-arrhythmogenic-right-ventricular-cardiomyopathy-and-predicts-the-risk-of-ventricular-arrhythmias-in-patients-with-implantable-defibrillators
#1
Fahrettin Oz, Imran Onur, Ali Elitok, Evin Ademoglu, Ibrahim Altun, Ahmet Kaya Bilge, Kamil Adalet
Background Arrhythmogenic right ventricular dysplasia (ARVD) is a heritable disorder characterized by fibro-fatty replacement of right ventricular myocytes, increased risk of ventricular arrhythmias, and sudden cardiac death. Galectin-3 (GAL3) is known to play an important role in a number of fibrotic conditions, including cardiac fibrosis. Many studies have focused on the association between GAL3 levels and cardiac fibrosis in heart failure. However, the role of GAL3 in the pathogenesis of ARVD and ventricular arrhythmias has not yet been evaluated thoroughly...
July 14, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28704475/protective-effect-of-galectin-9-in-murine-model-of-lung-emphysema-involvement-of-neutrophil-migration-and-mmp-9-production
#2
Yuko Horio, Hidenori Ichiyasu, Keisuke Kojima, Naoki Saita, Yohei Migiyama, Toyohisa Iriki, Kazuhiko Fujii, Toshiro Niki, Mitsuomi Hirashima, Hirotsugu Kohrogi
PURPOSE: Chronic obstructive pulmonary disease (COPD) is characterized by irreversible airflow obstruction and pulmonary emphysema. Persistent inflammation and remodeling of the lungs and airways result in reduced lung function and a lower quality of life. Galectin (Gal)-9 plays a crucial role as an immune modulator in various diseases. However, its role in the pathogenesis of pulmonary emphysema is unknown. This study investigates whether Gal-9 is involved in pulmonary inflammation and changes in emphysema in a porcine pancreatic elastase (PPE)-induced emphysema model...
2017: PloS One
https://www.readbyqxmd.com/read/28687490/x-ray-structure-of-a-protease-resistant-mutant-form-of-human-galectin-9-having-two-carbohydrate-recognition-domains-with-a-metal-binding-site
#3
Hiromi Yoshida, Nozomu Nishi, Kenji Wada, Takanori Nakamura, Mitsuomi Hirashima, Naoyuki Kuwabara, Ryuichi Kato, Shigehiro Kamitori
Galectin-9 (G9) is a tandem-repeat type β-galactoside-specific animal lectin having N-terminal and C-terminal carbohydrate recognition domains (N-CRD and C-CRD, respectively) joined by a linker peptide that is involved in the immune system. G9 is divalent in glycan binding, and structural information about the spatial arrangement of the two CRDs is very important for elucidating its biological functions. As G9 is protease sensitive due to the long linker, the protease-resistant mutant form of G9 (G9Null) was developed by modification of the linker peptide, while retaining its biological functions...
July 4, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28657598/secretion-of-ifn-%C3%AE-associated-with-galectin-9-production-by-pleural-fluid-cells-from-a-patient-with-extrapulmonary-tuberculosis
#4
Jingge Zhao, Beata Shiratori, Haorile Chagan-Yasutan, Makoto Matsumoto, Toshiro Niki, Michinori Tanaka, Yayoi Takahashi, Osumu Usami, Yugo Ashino, Toshio Hattori
In this study, we investigated the role of a matricellular protein galectin-9 (Gal-9) in pleural effusion related to tuberculosis (TB). Plasma and pleural fluid of a patient with extrapulmonary TB were analyzed for cytokine content by ELISA and Luminex. Peripheral blood mononuclear cells (PBMCs) and pleural fluid cells (PFCs) were examined for interferon-γ (IFN-γ) secretion by the enzyme-linked immunospot (ELISPOT) assay or IFN-γ ELISA, for apoptosis and necrosis by Cell Death Detection ELISA, and also underwent cell sorting...
June 28, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28656219/induction-of-apoptosis-by-galectin-9-in-liver-metastatic-cancer-cells-in-vitro-study
#5
Tomoko Tadokoro, Shintaro Fujihara, Taiga Chiyo, Kyoko Oura, Eri Samukawa, Yoshimi Yamana, Koji Fujita, Shima Mimura, Teppei Sakamoto, Takako Nomura, Joji Tani, Hirohito Yoneyama, Asahiro Morishita, Takashi Himoto, Hisakazu Iwama, Toshiro Niki, Mitsuomi Hirashima, Tsutomu Masaki
Liver metastasis from gastrointestinal cancer defines a patient's prognosis. Despite medical developments, pancreatic cancer with liver metastasis confers a very poor prognosis. Galectin-9 (Gal‑9) is a tandem-repeat-type galectin that has recently been demonstrated to exert antitumor effects on various types of cancer cells by inducing apoptosis. However, the apoptotic pathway of Gal‑9 in solid tumors is unclear. The aim of the present study was to evaluate the effects of Gal‑9 on human liver metastasis from pancreatic cancer...
June 23, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28629160/structural-characterization-of-a-rhamnogalacturonan-i-domain-from-ginseng-and-its-inhibitory-effect-on-galectin-3
#6
Huimin Shi, Li Yu, Yun Shi, Jiaojiao Lu, He Teng, Yifa Zhou, Lin Sun
A rhamnogalacturonan I domain, named RG-I-3A, was prepared from ginseng pectin by pectinase digestion and chromatography separation. Monosaccharide composition analysis revealed that it was mainly composed of galacturonic acid, rhamnose, galactose, and arabinose in a molar ratio of 32.5:11.2:31.9:16.5, with a molecular weight of 50 kDa. Partial acid hydrolysis, monoclonal antibody detection, and NMR spectra analysis suggested RG-I-3A was composed of →4)-α-GalpA-(1→2)-α-Rhap-(1→disaccharide repeating units as backbone, with β-1,4-galactan, α-1,5-arabinan, AG-I, and AG-II side chains substituted via the O-4 of Rhap...
June 18, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28620605/regulation-of-eosinophil-recruitment-and-activation-by-galectins-in-allergic-asthma
#7
REVIEW
Savita P Rao, Xiao Na Ge, P Sriramarao
Eosinophils are differentiated granulocytes that are recruited from the bone marrow to sites of inflammation via the vascular system. Allergic asthma is characterized by the presence of large numbers of eosinophils in the lungs and airways. Due to their capacity to rapidly release inflammatory mediators such as cytokines, chemokines, growth factors, and cytotoxic granule proteins upon stimulation, eosinophils play a critical role in pro-inflammatory processes in allergen-exposed lungs. Identifying key players and understanding the molecular mechanisms directing eosinophil trafficking and recruitment to inflamed airways is a key to developing therapeutic strategies to limit their influx...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28618039/serum-galectin-9-levels-are-correlated-to-liver-fibrosis-regardless-of-chronic-inflammation-or-hepatocellular-carcinoma-complications
#8
Koji Fujita, Toshiro Niki, Takako Nomura, Kyoko Oura, Tomoko Tadokoro, Teppei Sakamoto, Joji Tani, Hirohito Yoneyama, Asahiro Morishita, Noriyuki Kuroda, Takeshi Arai, Naoki Nishimoto, Takashi Himoto, Mitsuomi Hirashima, Tsutomu Masaki
BACKGROUND AND AIM: Chronic liver diseases (CLDs) progress from chronic inflammation to fibrosis to tumorigenesis. Galectin-9, a β-galactoside-specific animal lectin, is indicated to contribute to all three steps of progression. The aim of this study was to determine which of the three steps was most dominant in elevating the serum galectin-9 concentration and to test the possibility of galectin-9 as a serum biomarker. METHODS: Japanese patients with chronic hepatitis (CH), liver cirrhosis (LC), hepatocellular carcinoma (HCC), nonalcoholic fatty liver disease or alcoholic liver disease who provided informed consent were enrolled in this study...
June 15, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28615524/interleukin-15-stimulates-natural-killer-cell-mediated-killing-of-both-human-pancreatic-cancer-and-stellate-cells
#9
Jonas R M Van Audenaerde, Jorrit De Waele, Elly Marcq, Jinthe Van Loenhout, Eva Lion, Johan M J Van den Bergh, Ralf Jesenofsky, Atsushi Masamune, Geert Roeyen, Patrick Pauwels, Filip Lardon, Marc Peeters, Evelien L J Smits
Pancreatic ductal adenocarcinoma (PDAC) is the 4th leading cause of cancer-related death in Western countries with a 5-year survival rate below 5%. One of the hallmarks of this cancer is the strong desmoplastic reaction within the tumor microenvironment (TME), orchestrated by activated pancreatic stellate cells (PSC). This results in a functional and mechanical shield which causes resistance to conventional therapies. Aiming to overcome this resistance by tackling the stromal shield, we assessed for the first time the capacity of IL-15 stimulated natural killer (NK) cells to kill PSC and pancreatic cancer cells (PCC)...
May 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28612913/the-usefulness-of-soluble-st2-and-galectin-3-as-novel-biomarkers-for-better-risk-stratification-in-hypertrophic-cardiomyopathy
#10
Monika Gawor, Mateusz Śpiewak, Jadwiga Janas, Katarzyna Kożuch, Aleksandra Wróbel, Łukasz Mazurkiewicz, Rafał Baranowski, Magdalena Marczak, Jacek Grzybowski
BACKGROUND: Estimation of sudden cardiac death (SCD) risk is an integral part of clinical management of patients with hypertrophic cardiomyopathy (HCM). Identification of novel biomarkers of this disease can provide additional criteria for SCD risk stratification. Soluble suppression of tumorigenicity (sST2) and galectin-3 (Gal-3) are useful biomarkers for prognosis of heart failure (HF). Both of them appear to mediate cardiac fibrosis - an important pathogenetic process in HCM. Data about sST2 and Gal-3 usefulness in patients with HCM are limited...
June 14, 2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28586026/effects-of-galectin-9-on-apoptosis-cell-cycle-and-autophagy-in-human-esophageal-adenocarcinoma-cells
#11
Emiko Akashi, Shintaro Fujihara, Asahiro Morishita, Tomoko Tadokoro, Taiga Chiyo, Keiko Fujikawa, Hideki Kobara, Hirohito Mori, Hisakazu Iwama, Keiichi Okano, Yasuyuki Suzuki, Toshiro Niki, Mitsuomi Hirashima, Tsutomu Masaki
The incidence of esophageal adenocarcinoma (EAC) is rapidly increasing in western countries. The overall mortality of this disease remains high with a 5-year survival rate of less than 20%, despite remarkable advances in the care of patients with EAC. Galectin-9 (Gal-9) is a tandem-repeat type galectin that exerts anti-proliferative effects on various cancer cell types. The aim of the present study was to evaluate the effects of Gal-9 on human EAC cells and to assess the expression of microRNAs (miRNAs) associated with the antitumor effects of Gal-9 in vitro...
June 1, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28570288/myeloid-derived-suppressor-cells-associated-with-disease-progression-in-primary-hiv-infection-pd-l1-blockade-attenuates-inhibition
#12
Zi-Ning Zhang, Nan Yi, Tong-Wei Zhang, Le-Le Zhang, Xian Wu, Mei Liu, Ya-Jing Fu, Si-Jia He, Yong-Jun Jiang, Hai-Bo Ding, Zhen-Xing Chu, Hong Shang
OBJECTIVE: Events occurring during the initial phase of human immunodeficiency virus (HIV) infection are intriguing because of their dramatic impact on the subsequent course of the disease. In particular, the relationship between myeloid-derived suppressor cells (MDSCs) and HIV pathogenesis in primary infection remains unknown and the mechanism of MDSCs in HIV infection are incompletely defined. METHODS: The frequency of MDSC expression in patients with primary (PHI) and chronic HIV infection was measured, and the association with disease progression was studied...
May 31, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28554765/evaluation-of-the-immunohistochemical-expression-of-gal-1-gal-3-and-gal-9-in-the-colon-of-chronic-chagasic-patients
#13
Marcela Beghini, Márcia Fernandes de Araújo, Viviane Oliveira Severino, Renata Margarida Etchebehere, Denise Bertulucci Rocha Rodrigues, Sanívia Aparecida de Lima Pereira
OBJECTIVE AND DESIGN: The aim of the present study was to evaluate the immunohistochemical expression of Gal-1, Gal-3 and Gal-9 in the colon of chronic chagasic patients compared to biopsied non-chagasic patients. MATERIAL OR SUBJECTS: Thirty-two colon fragments were selected from chagasic patients with megacolon (n=25) and nonchagasic patients without megacolon (n=7). METHODS: Immunohistochemistry for Gal-1, Gal-3 and Gal-9 was performed using a common light microscope and the results were scored 0-3 according to labeling intensity...
April 20, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28548942/the-n-terminal-tail-coordinates-with-carbohydrate-recognition-domain-to-mediate-galectin-3-induced-apoptosis-in-t-cells
#14
Huiting Xue, Lu Liu, Zihan Zhao, Zhongyu Zhang, Yuan Guan, Hairong Cheng, Yifa Zhou, Guihua Tai
Galectin-3 is a galectin with a unique flexible N-terminal tail (NT) connected to the conserved carbohydrate recognition domain (CRD). Galectin-3 is associated with tumor immune tolerance and exhibits an ability to induce T cell apoptosis. We used Jurkat, Jurkat E6-1 and CEM T-cell lines and human peripheral blood mononuclear cells (PBMCs) to investigate the specific roles of the CRD and NT in inducing T cell apoptosis. Galectin-3 triggered sustained extracellular signal-regulated kinase (ERK) phosphorylation that induced apoptosis...
May 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28534962/galectin%C3%A2-9-ameliorates-fulminant-liver-injury
#15
Tomoko Tadokoro, Asahiro Morishita, Teppei Sakamoto, Shintaro Fujihara, Koji Fujita, Shima Mimura, Kyoko Oura, Takako Nomura, Joji Tani, Hirohito Yoneyama, Hisakazu Iwama, Takashi Himoto, Toshiro Niki, Mitsuomi Hirashima, Tsutomu Masaki
Fulminant hepatitis is a severe liver disease resulting in hepatocyte necrosis. Galectin‑9 (Gal‑9) is a tandem‑repeat‑type galectin that has been evaluated as a potential therapeutic agent for various diseases that regulate the host immune system. Concanavalin A (ConA) injection into mice results in serious, immune‑mediated liver injury similar to human viral, autoimmune and fulminant hepatitis. The present study investigated the effects of Gal‑9 treatment on fulminant hepatitis in vivo and the effect on the expression of microRNAs (miRNAs), in order to identify specific miRNAs associated with the immune effects of Gal‑9...
July 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28528914/systemic-sclerosis-dermal-fibroblasts-suppress-th1-cytokine-production-via-galectin-9-overproduction-due-to-fli1-deficiency
#16
Ryosuke Saigusa, Yoshihide Asano, Kouki Nakamura, Megumi Hirabayashi, Shunsuke Miura, Takashi Yamashita, Takashi Taniguchi, Yohei Ichimura, Takehiro Takahashi, Ayumi Yoshizaki, Tomomitsu Miyagaki, Makoto Sugaya, Shinichi Sato
Dermal fibroblasts promote skin-localized transdifferentiation of Tregs to Th2-like cells in systemic sclerosis (SSc). However, the entire effect of SSc dermal fibroblasts on immune cells still remains unknown. Since galectin-9 induces Th2 cytokine-predominant immune imbalance by negatively regulating Th1/Th17 cells in inflammatory diseases, we investigated the contribution of galectin-9 to Th immune balance in SSc lesional skin. We utilized human clinical samples and Fli1(+/-) mice because Fli1 deficiency induces SSc-like phenotypes in various cell types...
May 18, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28525549/the-change-in-circulating-galectin-3-predicts-absence-of-atrial-fibrillation-after-thoracoscopic-surgical-ablation
#17
Wouter R Berger, Benoît Jagu, Nicoline W E van den Berg, Dean R P P Chan Pin Yin, Jan P van Straalen, Onno J de Boer, Antoine H G Driessen, Jolien Neefs, Sébastien P J Krul, WimJan P van Boven, Allard C van der Wal, Joris R de Groot
Aims: Galectin-3 (Gal-3) is an important mediator of cardiac fibrosis, particularly in heart failure. Increased Gal-3 concentration (Gal-3), associated with increased risk of developing atrial fibrillation (AF), may reflect atrial fibrotic remodelling underlying AF progression. We aimed to investigate whether the change in serum Gal-3 reflects alterations of the arrhythmogenic atrial substrate following thoracoscopic AF surgery, and predicts absence of AF. Methods and results: Consecutive patients undergoing thoracoscopic AF surgery were included...
May 19, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28495789/dietary-nondigestible-oligosaccharides-and-bifidobacterium-breve-m-16v-suppress-allergic-inflammation-in-intestine-via-targeting-dendritic-cell-maturation
#18
Sander de Kivit, Atanaska I Kostadinova, JoAnn Kerperien, Mary E Morgan, Veronica Ayechu Muruzabal, Gerard A Hofman, Leon M J Knippels, Aletta D Kraneveld, Johan Garssen, Linette E M Willemsen
Dietary intervention with short-chain galacto-oligosaccharides (scGOS), long-chain fructo-oligosaccharides (lcFOS) and Bifidobacterium breve M-16V (Bb) (GF/Bb) suppresses food allergic symptoms in mice, potentially via intestinal epithelial cell (IEC)-derived galectin-9. Furthermore, in vitro studies showed galacto- and fructo-oligosaccharides (GF) to enhance the immunomodulatory capacity of a TLR9 ligand representing bacterial CpG DNA when exposed to IEC. In this study, we investigated whether GF/Bb modulates dendritic cells (DCs) and subsequent Th2 and regulatory T cell (Treg) frequency in the small intestinal lamina propria (SI-LP)...
May 11, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28492371/prognostic-value-of-tumoral-expression-of-galectin-9-in-gastric-cancer
#19
Sang Il Choi, Ki Woo Seo, Myeong Cherl Kook, Chan Gyoo Kim, Young Woo Kim, Soo Jeong Cho
BACKGROUND/AIMS: Galectin-9 (Gal-9) is a member of the β-galactoside-binding lectin family. Our previous study revealed that Gal-9 suppresses migration, invasion, and epithelial-mesenchymal transition in gastric cancer cells. Gal-9 was reported to have anti-metastatic activity in patients with malignant melanoma, breast cancer, and hepatocellular carcinoma. Therefore, we aimed to evaluate the prognostic significance of Gal-9 in patients with gastric cancer. MATERIALS AND METHODS: The clinical significance of Gal-9 was explored using clinical and pathological data from 619 patients with gastric cancer who underwent gastrectomy at National Cancer Center, Korea...
May 2017: Turkish Journal of Gastroenterology: the Official Journal of Turkish Society of Gastroenterology
https://www.readbyqxmd.com/read/28484683/alterations-of-the-coxiella-burnetii-replicative-vacuole-membrane-integrity-and-interplay-with-the-autophagy-pathway
#20
María E Mansilla Pareja, Antonino Bongiovanni, Frank Lafont, María I Colombo
Coxiella burnetii, the etiologic agent of Q fever, is a Gram-negative obligate intracellular bacterium. It has been previously described that both the endocytic and autophagic pathways contribute to the Coxiella replicative vacuole (CRV) generation. Galectins are β-galactoside-binding lectins that accumulate in the cytosol before being secreted via a non-conventional secretory pathway. It has been shown that Galectin-3, -8, -9 monitor bacteria vacuolar rupture and endosomal and lysosomal loss of membrane integrity through binding of host glycans exposed in the cytoplasm after membrane damage...
2017: Frontiers in Cellular and Infection Microbiology
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