Acute changes in colonic PGE 2 levels as a biomarker of efficacy after treatment of the Pirc (F344/NTac-Apc   am1137 ) rat with celecoxib

This study sought to evaluate short-term treatment with COX-2 inhibitors and acute changes in colonic PGE2 levels as predictors of long-term efficacy in a genetic model of colorectal cancer.MethodsCelecoxib oral suspension (40 mg/kg BID) was dosed to Apc-mutant Pirc (F344/NTac-Apcam1137) rats for 4 days (short-term group), or the equivalent dose of 1500 ppm celecoxib was administered in the diet for 4 months (long-term group). Percent inhibition of colonic PGE2 was calculated, and the reduction in colonic PGE2 was assessed in relation to suppression of adenomatous colon polyps.ResultsColonic mucosa PGE2 was fourfold higher in Pirc than in F344 wild-type rats (21 vs. 5.6 pg/mg epithelial tissue), due at least in part to higher COX-2 expression, and this was confirmed by elevated PGE2-d11 levels in Pirc colonic S9 incubations. In the 4-day study, dose-dependent reductions in PGE2 were observed in colonic epithelium (-33% (P>0.05) and -57% (P=0.0012)), after low- and high-dose celecoxib treatments of 4 mg/kg and 40 mg/kg (bid), respectively. In the 4-month study, 1500 ppm celecoxib suppressed colonic epithelium PGE2 by 43.5%, and tumor multiplicity by 80% (P
Source: Inflammation Research - Category: Research Source Type: research

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Source: Systems Biology in Reproductive Medicine - Category: Sexual Medicine Authors: Source Type: research
Publication date: Available online 20 January 2020Source: Trends in Food Science &TechnologyAuthor(s): Qiong-Qiong Yang, Arakkaveettil Kabeer Farha, Gowoon Kim, Khalid Gul, Ren-You Gan, Harold CorkeAbstractBackgroundCurcumin has gained increasing attention in recent years due to its biological properties and photosensitivity. Curcumin-mediated photodynamic therapy has been used in antibacterial and anticancer applications. Considering the importance and rapid advances in curcumin-mediated photodynamic treatments and its related beneficial functions, a comprehensive and up-to-date review is timely to summarize the state...
Source: Trends in Food Science and Technology - Category: Food Science Source Type: research
Publication date: Available online 20 January 2020Source: Trends in Food Science &TechnologyAuthor(s): I.P. Shanura Fernando, BoMi Ryu, Ginnae Ahn, In-Kyu Yeo, You-Jin JeonAbstractBackgroundMetabolic syndrome (MS) defines a group of severe comorbidities, including insulin resistance, abnormal fat accumulation, and high blood pressure that lead to obesity, diabetes, and heart diseases. MS has received a growing concern due to its rising prevalence in many countries. The consumption of high-calorie food, sedentary lifestyle habits, genetic factors, and stress conditions aggravate risk factors for developing metabolic syn...
Source: Trends in Food Science and Technology - Category: Food Science Source Type: research
Publication date: Available online 20 January 2020Source: Trends in Food Science &TechnologyAuthor(s): Saikat Sen, Raja Chakraborty, Pratap KalitaAbstractBackgroundRice (Oryza sativa L.) is the most popular staple food grain and an important source of fibre, energy, minerals, vitamins, and other biomolecules. Rice parts exhibited a number of health beneficial effect in pre-clinical/clinical studies. Rice constituents are getting popularity in preparation of pharmaceutical adjuvant, food additives and supplements.Scope &approachIn this paper, we summarized the available literature on health-promoting and therapeutic...
Source: Trends in Food Science and Technology - Category: Food Science Source Type: research
Publication date: Available online 20 January 2020Source: LWTAuthor(s): Derong Lin, Xiaomei Long, Yichen Huang, Yuanmeng Yang, Zhijun Wu, Hong Chen, Qing Zhang, Dingtao Wu, Wen Qin, Zongcai TuAbstractThe effects of mixed fermentation by lactic acid bacteria and Neurospora crassa, and microwave treatment on the composition, structure, and functional properties of okara DF were studied. The results of SEM and EDX showed that the honeycomb structure was more obvious and the content of elemental components was changed after fermentation and microwave treatment. The result of TGA-DSC showed that the thermal stability of the sam...
Source: LWT Food Science and Technology - Category: Food Science Source Type: research
The objective of this work was to evaluate the physicochemical characteristics and technological functional properties of okara flours (OFs) obtained by different drying processes in forced air oven (FAD at 40, 50, 60, and 70 °C), microwave (MWD), and freeze drying (FRD). The OFs showed acidity range of 3–5.7 mEq NaOH/100 g, pH of 5.4–5.9, soluble solid of 0.6–1.3 ºBrix, luminosity of 78–85, and good technological functional properties (MWD-OF and FRD-OF showed ↑oil absorption capacity and ↑emulsifying capacity and FRD-OF showed foam capacity). The FAD70-OF, MWD-OF, and FRD-OF...
Source: LWT Food Science and Technology - Category: Food Science Source Type: research
Publication date: Available online 21 January 2020Source: Food ChemistryAuthor(s): Congcong Sun, Xuefeng Wu, Xiaoju Chen, Xingjiang Li, Zhi Zheng, Suwei JiangAbstractOkara dietary fiber was prepared by liquid fermentation with Monascus anka (M. anka). Infrared spectra results indicated that there were more oligosaccharides because of the hydrogen bond cleavage of the polysaccharides in okara Monascus dietary fiber (OMDF). Scanning electron microscopy and X-ray analyses showed that the structures of OMDF were altered as compared to that of the control. The UV-visible spectrum of the M. anka seed broth (MSB) contained three ...
Source: Food Chemistry - Category: Food Science Source Type: research
Authors: Su Z, Liu HL, Qi B, Liu Y Abstract OBJECTIVE: To explore the influences of propofol on the proliferation and apoptosis of cardia cancer cells via mitogen-activated protein kinase/extracellular signal-regulated kinase (MAPK/ERK) signaling pathway. PATIENTS AND METHODS: A total of 65 surgical resection specimens of cardia cancer were selected as research objects and divided into control group and with low (12.5 μmol/L), medium (25 μmol/L), and high (50 μmol/L) propofol concentration groups. The apoptosis of cancer cells, ERK1/2 phosphorylation level, expressions of Caspase-3, B-cell lymphoma-2 (...
Source: European Review for Medical and Pharmacological Sciences - Category: Drugs & Pharmacology Tags: Eur Rev Med Pharmacol Sci Source Type: research
Cosmeri Rizzato1, Javier Torres2, Elena Kasamatsu3, Margarita Camorlinga-Ponce2, Maria Mercedes Bravo4, Federico Canzian5 and Ikuko Kato6* 1Department of Translation Research and of New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy 2Unidad de Investigación en Enfermedades Infecciosas, Unidades Médicas de Alta Especialidad Pediatría, Instituto Mexicano del Seguro Social, Mexico City, Mexico 3Instituto de Investigaciones en Ciencias de la Salud, National University of Asunción, Asunción, Paraguay 4Grupo de Investigación en Biología del C&aacut...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Conclusions The current review reports recent epidemiological and experimental data supporting the bright future of dietary polyphenols as chemopreventive, anti-inflammatory, immunomodulatory, and anticancer agents in CRC (Figure 1). The polyphenol-rich diet not only may represent a chemopreventive treatment but also has important function on immune system by promoting symbiont and commensal bacterial populations, increases reciprocal interaction between host and microbiota which in turn have important effects on immune function Evidence underlines the use of polyphenols as sensitizers of chemo/radiotherapies paving the w...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
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