Search results for "Vitis"

Valoración del estado periodontal, perfil inflamatorio y disfunción endotelial en pacientes con Síndrome de Ovario Poliquístico

2022

Las enfermedades periodontales (PDs [del inglés, Periodontal Diseases]) son unas de las enfermedades más frecuentes. Estas patologías, son infecciosas - causadas por bacterias- y su naturaleza de inflamación crónica las ha relacionado con múltiples enfermedades sistémicas. Recientemente, se ha planteado la asociación de las PDs con el Síndrome de Ovario Poliquístico (PCOS [del inglés, Polycistic Ovary Syndrome]). Este síndrome, es un trastorno endocrino complejo cuyo criterio diagnóstico según el Consenso de Róterdam, contempla la presencia de oligo y/o anovulación, signos clínicos y/o bioquímicos de hiperandrogenismo y ovarios de apariencia ecográfica poliquística. La estimulación y secrec…

Antagonistic activity of Bacillus subtilis strain AG1 against fungal microorganisms associated with Vitis vinifera.

2009

Green biotechnology for valorisation of residual biomasses in nutraceutic sector: Characterization and extraction of bioactive compounds from grape p…

2019

The grape pomace (GP) is an important by-product of winemaking, accounting for about 13-25% of the grapes processed. The aim of this work was to investigate the nutritional and antioxidant composition of GP obtained from Nero d’Avola (NA) grape, one of the most important indigenous varieties in Italy, in order to verify application in nutraceutics. Seeds and skin of the GP were studied for their nutritional and antioxidants composition, fatty acid and polyphenols profile, bioactives properties in vitro, by gravimetric, spectrophotometric and chromatographic techniques. The results showed that NAGP seeds are rich in the beneficial polyunsaturated fatty acids and that the polyphenols extracte…

Demonstration of a correlation between young leaves, apex and young bunches specific to a young grapevine cutting in the first period of its developm…

2001

<p style="text-align: justify;">The development of hardwood cutting of grapevine comprise 4 succesive phases. Phase I: first period of shoot extension. Phase II: characterized by a slow growth due to a very low activity of the terminal bud. Phase III: reactivation of the growth consecutive to a resumption of the apical activity. Phase IV: when the growth becomes maximal.</p><p style="text-align: justify;">The objective of this work has been to identify the cause of the slowdown of the activity of apical bud during the phase II.</p><p style="text-align: justify;">In a first experiment, we have compared the effects of three modes of defoliation applied from the b…

A randomized controlled trial of a power brush/irrigator/mouthrinse routine on plaque and gingivitis reduction in orthodontic patients

2018

ABSTRACT Objectives: To assess plaque and gingivitis reduction in orthodontic patients after 4 weeks' use of an oscillating-rotating power brush, irrigator, and mouthrinse. Materials and Methods: This was a randomized, examiner-blind, clinical trial comparing plaque and gingivitis outcomes for an experimental power brush/irrigator/mouthrinse oral hygiene routine vs a dental prophylaxis followed by regular manual brushing (positive control). Fifty-one participants with fixed orthodontic appliances in the upper and lower jaw and a minimum of 15 gingival bleeding sites were randomly assigned to experimental or positive control treatment. Both groups were instructed to use their products at lea…

The production of resveratrol (3,5,4'‐trihydroxystilbene) by grapevinein vitrocultures, and its application to screening for grey mould resistance

1992

The ability of grapevine in vitro cultures to synthesise the phytoalexin precursor resveratrol in response to ultraviolet light irradiations is investigated in order to develop methods for screening for resistance to grey mould (Botrytis cinerea Pers.) in grapevines produced as a result of somatic embryogenesis. It is demonstrated that resveratrol formation can be reproducibly induced in leaves of in vitro plantlets. Differences in the production of resveratrol among the three varieties of Vitis vinifera tested (Pinot Noir, Chardonnay and Cabernet Sauvignon) were consistent with observations regarding their field susceptibility to grey mould. The use of phytoalexin induction and of in vitro…

Yeast interaction on Chardonnay wine composition: Impact of strain and inoculation time.

2022

Abstract It is of great importance to understand the molecular characteristics and substantial chemical transformations due to yeast-yeast interaction. Non-targeted metabolomics was used to unravel must in fermentation composition, inoculated with non-Saccharomyces (NS) yeasts and Saccharomyces cerevisiae (S) for sequential fermentation. ultrahigh-resolution mass spectrometry was able to distinguish thousands of metabolites and provides deep insights into grape must composition allowing better understanding of the yeast-yeast interactome. The dominance of S, characterized by a metabolic richness not found with NS, is dependent on inoculation time and on the yeast species present. Co-inocula…

Production of the Phytoalexin Resveratrol by Grapes as a Response to Botrytis Attack Under Natural Conditions

1995

Le resveratrol (3,5,4'-trihydroxystilbene) est un des mebolites de stress produit par la vigne en reponse a une infection parasitaire ou une blessure. La distribution de cette molecule dans des lesions limitees causees par Botrytis cinerea sur des grappes de raisins a maturite au vignoble a ete etudiee. Le resveratrol est localise principalement dans les fruits sains entourant les zones infectees. Cette reponse localisee contribue a limiter l'extension du pathogene tant que les conditions climatiques lui sont defavorables. Lorsque les conditions deviennent favorables; c'est-a-dire apres une periode humide et chaude, une expansion rapide des lesions est alors observee sur les fruits en depit…

Presence of endophytic bacteria in Vitis vinifera leaves as detected by Fluorescence in situ hybridization

2010

Fluorescence in situ hybridization (FISH) in combination with confocal laser scanning microscopy (CLSM) was applied to detect and localize bacterial colonies in leaf tissues of Vitis vinifera. Leaves were cleared to minimize the autofluorescence of plant fragments. The use of fluorescently labeled bacterial probe EUB338 on discolored grapevine leaf disks allowed the estimation of the spatial distribution of different bacterial colonies. In particular, bacterial colonies were found in veins, cells, hairs, intercellular spaces, and in cut edges of leaf disks of both non-Acremonium byssoides-colonized and A. byssoides-colonized leaves of five different cultivars. Furthermore, CLSM confirmed th…

Association Study of Genetic Variants in the 14q11 - 14q13 Proteasomal Genes Cluster with Juvenile Idiopathic Arthritis (JIA) in Latvian Population

2009

Association Study of Genetic Variants in the 14q11 - 14q13 Proteasomal Genes Cluster with Juvenile Idiopathic Arthritis (JIA) in Latvian Population The possible role of proteasomes in the development of autoimmune diseases was hypothesised after discovery of the involvement of proteasomal LMP2 and LMP7 subunits in antigene processing. The objective of this study was to determine the association between allelic variants of the genes encoding proteasomal proteins PSME1, PSME2 and PSMA6 and juvenile idiopathic arthritis (JIA) in the Latvian population. One Indel G-4543 CA-4544 →GA and four SNPs related to the PSMA6 gene (A-2486 →G and C-1910 →T, upstream promoter, C-110 →A of promoter, and C-8…