Injected laquinimod D-α-tocopheryl polyethylene glycol-1000 succinate polymeric micelles for the treatment of inflammatory bowel disease

Publication date: Available online 19 October 2019Source: Colloids and Surfaces B: BiointerfacesAuthor(s): Lifen Wang, Pengpeng Xue, Mengqi Tong, Rui Chen, Waigeng Yang, Deli ZhuGe, Jiandong Yuan, Qing Yao, Yingzheng Zhao, Helin XuAbstractInflammatory bowel diseases (IBDs) are chronic relapsing disorders of the gastrointestinal tract characterized pathologically by intestinal inflammation and epithelial injury. Laquinimod (LAQ), a poorly water-soluble compound, was proved to be effective for colitis remission at low dose of 0.5 mg/kg in patients with Crohn’s disease. Due to its extremely low solubility in water, it was difficult to develop an injectable liquid dosage form. Herein, D-α-Tocopheryl polyethylene glycol-1000 succinate (TPGS) polymeric micelles were developed as a delivery vehicle of LAQ for the management of inflammatory bowel disease. Using the LAQ/TPGS ratio of 1:100, LAQ-loaded micelles were successfully prepared by thin-film dispersion method. The solubility of LAQ in water was significantly increased from 10.5 μg/mL in pure water to 500 μg/mL in TPGS micelles. LAQ-loaded micelles of TPGS exhibited the fine particle size of 34.6 nm and Zeta potential of -0.67 mV. Moreover, the good stability of LAQ-loaded micelles in physiology-mimicking medium was confirmed by detecting their particle size, zeta potential and leakage of the loading drug. Therapeutic effect of LAQ-loaded micelles on DSS-induced mice was prov...
Source: Colloids and Surfaces B: Biointerfaces - Category: Biochemistry Source Type: research

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Publication date: Available online 16 November 2019Source: Redox BiologyAuthor(s): Solveigh C. Koeberle, André Gollowitzer, Jamila Laoukili, Onno Kranenburg, Oliver Werz, Andreas Koeberle, Anna P. KippAbstractGlutathione peroxidase 2 (GPx2) is one of the five selenoprotein GPxs having a selenocysteine in the active center. GPx2 is strongly expressed in the gastrointestinal epithelium, as is another isoform, GPx1, though with a different localization pattern. Both GPxs are redox-active enzymes that are important for the reduction of hydroperoxides.Studies on GPx2-deficient mice and human HT-29 cells with a stable k...
Source: Redox Biology - Category: Biology Source Type: research
Authors: Naftali T PMID: 31713366 [PubMed - in process]
Source: The Israel Medical Association Journal - Category: General Medicine Tags: Isr Med Assoc J Source Type: research
CONCLUSIONS: the prevalence of CeD in our patients with IBD was higher than that reported in the literature for other series of patients with IBD. A combination of anti-tTG testing and CeD genetics may screen patients for CeD in this population of patients with IBD. PMID: 31718200 [PubMed - as supplied by publisher]
Source: Revista Espanola de Enfermedades Digestivas - Category: Gastroenterology Tags: Rev Esp Enferm Dig Source Type: research
CONCLUSION: Patients showed a good response to a seton procedure combined with IFX therapy regardless of the time of initiation of IFX therapy. PMID: 31726000 [PubMed]
Source: Annals of Coloproctology - Category: Gastroenterology Tags: Ann Coloproctol Source Type: research
Authors: Lee JL PMID: 31725995 [PubMed]
Source: Annals of Coloproctology - Category: Gastroenterology Tags: Ann Coloproctol Source Type: research
Publication date: Available online 15 November 2019Source: Autoimmunity ReviewsAuthor(s): José María G. Ruiz de Morales, Lluís Puig, Esteban Daudén, Juan D. Cañete, José Luis Pablos, Antonio Olveira Martín, Carlos González Juanatey, Alfredo Adán, Xavier Montalbán, Natalia Borruel, Guillermo Ortí, Esther Holgado Martín, Carolina García-Vidal, Cynthia Vizcaya Morales, Víctor Martín Vázquez, Miguel Ángel González-GayAbstractInterleukin 17 (IL-17) is a proinflammatory cytokine that has been the focus of...
Source: Autoimmunity Reviews - Category: Allergy & Immunology Source Type: research
Publication date: 14 November 2019Source: Cell, Volume 179, Issue 5Author(s): Bing Huang, Zhanghua Chen, Lanlan Geng, Jun Wang, Huiying Liang, Yujie Cao, Huan Chen, Wanming Huang, Meiling Su, Hanqing Wang, Yanhui Xu, Yukun Liu, Bingtai Lu, Huifang Xian, Huiwen Li, Huilin Li, Lu Ren, Jing Xie, Liping Ye, Hongli WangSummaryPediatric-onset colitis and inflammatory bowel disease (IBD) have significant effects on the growth of infants and children, but the etiopathogenesis underlying disease subtypes remains incompletely understood. Here, we report single-cell clustering, immune phenotyping, and risk gene analysis for chil...
Source: Cell - Category: Cytology Source Type: research
Conditions:   Ulcerative Colitis;   Telemedicine Intervention:   Device: Constant-Care Sponsors:   Nordsjaellands Hospital;   Calpro AS Recruiting
Source: - Category: Research Source Type: clinical trials
Condition:   Crohn Disease Interventions:   Drug: 5-aminolevulinic acid;   Procedure: Blue light photopheresis;   Procedure: Transfusion;   Procedure: Continuous Mononuclear Cell Collection (CMNC) Sponsors:   University Hospital, Akershus;   Oslo University Hospital Not yet recruiting
Source: - Category: Research Source Type: clinical trials
This study aimed to assess the impact of primary sclerosing cholangitis on disease phenotype and its course in patients with ulcerative colitis. DESIGN: This is a retrospective study with 3:1 matched cohorts. SETTINGS: Tertiary care center’s electronic database was used for data analysis from 2000 and 2018. PATIENTS: Of 782 patients with ulcerative colitis, 77 patients who had coincident primary sclerosing cholangitis were included. MAIN OUTCOME MEASURES: The primary outcomes evaluated were disease characteristics including colonic disease activity, temporal change of disease course, colorectal neoplasia,...
Source: Diseases of the Colon and Rectum - Category: Gastroenterology Tags: Original Contributions: Inflammatory Bowel Disease Source Type: research
More News: Biochemistry | Gastroenterology | Inflammatory Bowel Disease | Men | Physiology | Polyethylene Glycol