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Xingting Liu, Xin Lin, Yuling Mi, Jian Li, Caiqiao Zhang
Oxidative stress is an important inducement in ovarian aging which results in fecundity decline in human and diverse animals. As a potent antioxidant, grape seed proanthocyanidin extract (GSPE) was investigated to ameliorate chicken ovarian aging in this study. Firstly, ovarian antioxidant capacity of hens at different ages (90, 150, 280, and 580 days old) was compared to elucidate its age-related changes. Subsequently, a D-gal-induced (2.5 mg/mL) aging ovarian model was established and the cultured ovarian tissues were treated with GSPE at 5  μ g/mL for 72 h to evaluate the putative attenuating effects of GSPE on ovarian aging...
2018: Oxidative Medicine and Cellular Longevity
Liyu Shi, Shifeng Cao, Xin Chen, Wei Chen, Yonghua Zheng, Zhenfeng Yang
Proanthocyanidins (PAs) are distributed widely in Chinese bayberry fruit and have been associated with human health benefits, but molecular and biochemical characterization of PA biosynthesis remains unclear. Here, two genes encoding key PA biosynthetic enzymes, anthocyanidin reductase (ANR) and leucoanthocyanidin reductase (LAR) were isolated in bayberry fruit. MrANR was highly expressed at the early stage of fruit development when soluble PAs accumulated at high levels. Meanwhile, the transcript abundance of both MrANR and MrLAR observed at the late stage was paralleled with the high amounts of insoluble PAs...
2018: Frontiers in Plant Science
Jesus Salinas-Casado, Santiago Méndez-Rubio, Manuel Esteban-Fuertes, Antonio Gómez-Rodríguez, Miguel Vírseda-Chamorro, Marcos Luján-Galán, Grupo Rituman
OBJECTIVE: To compare the efficacy and safety of dietary supplement "Manosar®" composed of D-mannose (2 g), 24 h prolonged release, associated with Proanthocyanidin (PAC) (140 mg), ursolic acid (7.98 mg), A, C, and D vitamins and the oligoelement zinc, versus 240 mg of PAC in recurrent urinary tract infections (UTI), for a designed follow-up of 24 weeks, in women. METHODS: A multicenter randomized experimental double-blind study was carried out. The study was approved by review board of "Complejo Hospitalario de Toledo" (Spain), and all patients gave informed consent...
March 2018: Archivos Españoles de Urología
Iris Ginés, Katherine Gil-Cardoso, Joan Serrano, Àngela Casanova-Martí, MTeresa Blay, Montserrat Pinent, Anna Ardévol, Ximena Terra
Obesity is highly associated with the pathologies included in the concept of the Metabolic Syndrome. Grape-seed proanthocyanins (GSPE) have showed very positive effects against all these metabolic disruptions; however, there is, as yet, no consensus about their effectiveness against an obesogenic challenge, such as a cafeteria diet. We determined the effectiveness of a dose of 500 mg GSPE/kg b.w. (body weight) against the obesogenic effects of a 17-week cafeteria diet, administered as a sub-chronic treatment, 10-15 days before, intermittently and at the end of the diet, in Wistar rats...
March 7, 2018: Nutrients
XiaoHong Yang, Tao Liu, Bo Chen, Fangqin Wang, Qunfang Yang, XiaoHong Chen
A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has not been fixed in the paper.
March 7, 2018: Scientific Reports
Kenji Hosoda, Hideki Sasahara, Kei Matsushita, Yasuaki Tamura, Makoto Miyaji, Hiroki Matsuyama
Objective: An experiment was conducted to assess the antioxidant contents and activities of colored rice grains and to evaluate their nutritive characteristics in terms of chemical composition and in situ ruminal degradation. Methods: Ten cultivars of colored rice grains (Oryza sativa L.) collected from several areas of Japan were studied, and control rice without pigment, maize, barley, and wheat grains were used as control grains. Their chemical compositions, pigment, polyphenol contents, total antioxidant capacity (TAC), and degradation characteristics were determined...
March 2, 2018: Asian-Australasian Journal of Animal Sciences
Qian Yan, Yi Wang, Qian Li, Zhengsheng Zhang, Hui Ding, Yue Zhang, Housheng Liu, Ming Luo, Dexin Liu, Wu Song, Haifeng Liu, Dan Yao, Xufen Ouyang, Yaohua Li, Xin Li, Yan Pei, Yuehua Xiao
Brown cotton fibers are the most widely used naturally colored raw materials for the eco-friendly textile industry. Previous studies have indicated that brown fiber pigments belong to proanthocyanidins (PAs) or their derivatives, and fiber coloration is negatively associated with cotton productivity and fiber quality. To date, the molecular basis controlling the biosynthesis and accumulation of brown pigments in cotton fibers is largely unknown. In the present study, based on expressional and transgenic analyses of cotton homologs of Arabidopsis PA regulator TRANSPARENT TESTA 2 (TT2) and fine mapping of the cotton dark brown fiber gene (Lc1), we show that a TT2 homolog, GhTT2-3A, controls PA biosynthesis and brown pigmentation in cotton fibers...
March 6, 2018: Plant Biotechnology Journal
Daqian Yang, Huijie Jiang, Jingjing Lu, Yueying Lv, Ruiqi Baiyun, Siyu Li, Biying Liu, Zhanjun Lv, Zhigang Zhang
Lead, a pervasive environmental hazard worldwide, causes a wide range of physiological and biochemical destruction, including metabolic dysfunction. Grape seed proanthocyanidin extract (GSPE) is a natural production with potential metabolic regulation in liver. This study was performed to investigate the protective role of GSPE against lead-induced metabolic dysfunction in liver and elucidate the potential molecular mechanism of this event. Wistar rats received GSPE (200 mg/kg) daily with or without lead acetate (PbA, 0...
March 1, 2018: Environmental Pollution
Eirini Sarrou, Lefki-Pavlina Giassafaki, Domenico Masuero, Daniele Perenzoni, Ioannis S Vizirianakis, Maria Irakli, Paschalina Chatzopoulou, Stefan Martens
Hypericum perforatum is known as an important medicinal plant, used for the treatment of several diseases, while its pharmacological properties are attributed to the presence of a wide range of secondary metabolites. Due to the great chemotypic variability of Hypericum species in the nature, and the demand for standardized herbal products, a detailed phytochemical investigation was carried out on different parts (herba, leaf, flowers) from wild collected and cultivated populations, using advanced chromatographic tools...
February 27, 2018: Food and Chemical Toxicology
Mingxin Zhang, Qianqian Wu, Yao Chen, Mubing Duan, Ge Tian, Xianbo Deng, Yankuo Sun, Tong Zhou, Guihong Zhang, Weisan Chen, Jianxin Chen
Porcine reproductive and respiratory syndrome virus (PRRSV) is a widely prevalent and endemic swine pathogen that causes significant economic losses for the global pig industry annually. Currently, the most prevalent strategy for PRRSV control remains the prevention of virus transmission, with highly effective therapeutic agents and vaccines still lacking. Proanthocyanidin A2 (PA2) belongs to the family of tea polyphenols, which have been reported to exhibit a range of biological activities including anti-oxidative, cardio-protective, anti-tumoural, anti-bacterial, anti-viral, and anti-inflammatory effects in vitro as well as in vivo...
2018: PloS One
Baskaran Yogalakshmi, Chandrasekaran Sathiya Priya, Carani Venkatraman Anuradha
CONTEXT: Endoplasmic reticulum (ER) stress in the liver is a pathological outcome of nutrient excess and is suggested to be one of the hits for progressive liver injury. OBJECTIVE: This study investigated whether grape seed proanthocyanidins (GSP) and metformin (MET) alone or in combination can relieve hepatic ER stress induced in rats subjected to calorie excess. MATERIAL AND METHODS: Male albino Wistar rats were given high calorie diet (HCD) for 45 days, while GSP (100 mg/kg body weight) and MET (50 mg/kg body weight) were administered either alone or in combination for last 15 days...
February 27, 2018: Archives of Physiology and Biochemistry
Fangzheng Chen, Heng Wang, Junjie Yan, Jiadan Lai, Shujing Cai, Linbo Yuan, Situo Zheng
Heat shock protein 70 (HSP70) is a molecular chaperone which has a low content in cytoplasm under normal physiological conditions. A higher intracytoplasmic HSP70 level can be observed in pulmonary arterial smooth muscle cell (PASMC) in pulmonary arterial hypertension (PAH), and this up-regulation can promote pho-IκBα expression, which is an NF-κB signaling pathway inhibitor. NF-κB signaling pathway up-regulation can promote PASMC proliferation and pulmonary vascular remodeling in PAH, resulting in elevation of pulmonary pressure and the subsequent right heart failure caused by right ventricular hypertrophy...
February 23, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Hasani Prabodha Sudasinghe, Dinithi C Peiris
Leaves of Passiflora suberosa L. (Family: Passifloraceae; common name: wild passion fruit, devil's pumpkin) are used in Sri Lankan traditional medicine for treating diabetes. The present study investigated the in vivo ability of P. suberosa leaves to manage blood sugar status and associated cholesterol levels. Mechanisms of action and toxicity were also determined. Phytochemical screening of aqueous extracts of P. suberosa leaves and carbohydrate content of the leaves were determined according to previously published methods...
2018: PeerJ
Gema Pereira-Caro, José Luis Ordóñez, Iziar Ludwig, Sylvie Gaillet, Pedro Mena, Daniele Del Rio, Jean-Max Rouanet, Keren A Bindon, José Manuel Moreno-Rojas, Alan Crozier
This study developed, optimized and validated an ultra-high-performance liquid chromatography-high-resolution mass spectrometry (UHPLC-HRMS) method to identify and quantify metabolites and microbial-derived catabolites in urine, plasma and feces of rats following ingestion of 50 mg of a red wine proanthocyanidin-rich extract. The method was validated for specificity, linearity, limit of detection (LD) and quantification (LQ), intra-day and inter-day precision, recovery and matrix effects, which were determined for 34 compounds in the three biological matrices...
June 30, 2018: Food Chemistry
Jose Enrique Gonzalvez, Gloria Garcia, Sebastian Galliano, Alicia Dominighini, Leda Urli, Juan Monti, Maria Teresa Ronco, Daniel Frances, Marcelo Wagner, Cristina Ester Carnovale, Alejandra Nora Luquita
BACKGROUND: Ligaria cuneifolia (Lc) (R. et P.) Tiegh. (Loranthaceae) (Argentine mistletoe) is usually used in local folk medicine. OBJECTIVE: We studied the effect of treatment with the Lc proanthocyanidin-enriched fraction (PLc) in rats fed with Cho-enriched diet on plasma Cho levels, the hemorheological parameters, and biliary secretion. METHOD: Adult male Wistar rats were fed ad libitum with a Cho-enriched diet (Cho (97% purity) 8 g/kg of diet and corn oil 280 g/kg of diet) during 28 days...
February 22, 2018: Recent Patents on Endocrine, Metabolic & Immune Drug Discovery
Àngela Casanova-Martí, Joan Serrano, Kevin J Portune, Yolanda Sanz, M Teresa Blay, Ximena Terra, Anna Ardévol, Montserrat Pinent
Grape seed proanthocyanidin extract (GSPE) modulates several parameters involved in metabolic syndrome. GSPE is a mixture of compounds, some which are rapidly absorbed, while others remain in the lumen where they might have effects that are translated to the whole organism. Our aim was to decipher if the 8-day treatment of GSPE, previously shown to reduce food intake, induces changes in the microbiota and enterohormone secretion. The ratio of Firmicutes : Bacteroidetes was lower in the microbiota of GSPE-treated rats compared to controls, and differences in several taxonomic families and genera were observed...
February 23, 2018: Food & Function
Shusuke Toden, Preethi Ravindranathan, Jinghua Gu, Jacob Cardenas, Madelaine Yuchang, Ajay Goel
Proanthocyanidins are a heterogeneous group of flavan-3-ol or flavan-3,4-diol oligomers present in various fruits and vegetables. In particular, the smaller oligomeric subset of proanthocyanidins, termed the oligomeric proanthocyanidins (OPCs) appear to have potent anti-tumorigenic properties, but the underlying mechanisms for their effectiveness remain unclear. Herein, we utilized a series of in vitro, in vivo and patient-derived organoid approaches to systematically investigate the chemoprotective role of OPCs in colorectal cancer...
February 20, 2018: Scientific Reports
Constanza Mellado, Toribio Figueroa, Ricardo Baez, Rosario Castillo, Manuel Francisco Melendrez, Berta Schulz, Katherina Fernandez
The graphene aerogels' potential for use as both a hemostatic agent and dermal delivery system has scarcely been investigated. In this study, we used a sol-gel process for generating dry and stable composite aerogels based on graphene oxide (GO) and polyvinyl alcohol (PVA). Furthermore, we incorporated natural extract of País grape seed (SD) and skin (SK), rich in Proanthocyanidins (PAs or condensed tannins). The effect of the incorporation of the grape extracts was investigated in relation to the aerogels' structure, coagulation performance and the release of the extracts...
February 20, 2018: ACS Applied Materials & Interfaces
H Toker, H Balci Yuce, A Lektemur Alpan, F Gevrek, M Elmastas
OBJECTIVE: Grape seed proanthocyanidine extract (GSPE) is a strong antioxidant derived from the grape seeds (Vitis vinifera, Terral J.F.) and has a polyphenolic structure with a wide range of biological activity. The aim of the present study was to evaluate the effects of GSPE on alveolar bone loss and histopathological changes in rats with diabetes mellitus and ligature-induced periodontitis. MATERIAL AND METHODS: Forty rats were divided into 6 study groups. Control (C, 6 rats) group, periodontitis (P, 6 rats) group, diabetes (D, 6 rats) group, diabetes and periodontitis (D+P, 6 rats) group, diabetes, periodontitis and 100 mg/kg/day GSPE (GSPE-100, 8 rats), and diabetes, periodontitis and 200 mg/kg/day GSPE (GSPE-200, 8 rats) group...
February 15, 2018: Journal of Periodontal Research
M Heinrich, R Daniels, F C Stintzing, D R Kammerer
The aim of the present study was to investigate the impact of crucial process parameters, i.e. of light and temperature conditions, during the preparation of St. John's wort (SJW, Hypericum perforatum L.) Arachis oil macerates. Extracts were prepared according to a standardized protocol over a period of 28 days. For this purpose, flowering tops of H. perforatum were macerated with Arachis oil (drug extract ratio, DERnative 1:4) under different light and temperature conditions. Spectrophotometric measurements were carried out to quantitate naphthodianthrones and to characterize extract color in the CIE L*C*h° system...
March 1, 2017: Die Pharmazie
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