RESUMEN
In the last decades, the presence of peri-implant diseases (PD) has increased. One of the therapies currently used is probiotics with Lactobacillus reuteri (LR). The aim of this article is to determinate, through a systematic review and meta-analysis, the clinical effectiveness of LR in the treatment of PD. We searched the literature until January 2021, in the biomedical databases: Pubmed, Embase, Scielo, Science Direct, Scopus, SIGLE, LILACS, Google Scholar and Cochrane Central Registry of Clinical Trials. The selection criteria of the studies were: randomized controlled clinical trials, without language and time restriction, reporting the clinical effects (depth to probing, plaque index and bleeding index) of the LR in the PD treatment. The risk of study bias was analyzed through the Cochrane tool for randomized studies using Review Manager software. The search strategy resulted in 6 articles of which four investigated peri-implantitis and three peri-implant mucositis. All studies reported that there was a difference in the depth of the probing in the treatment of PD, in favor of the group using LR, though not always achieving significance. The use of LR can be clinically effective in terms of pocket depth reduction in the treatment of PD.
Asunto(s)
Implantes Dentales , Limosilactobacillus reuteri , Periimplantitis , Probióticos , Humanos , Periimplantitis/terapia , Resultado del TratamientoRESUMEN
Grape seed extract (GSE), a naturally producing polyphenolic compound, is found to be a potent hostmodulatory agent and considered for management of periodontal disease. Its anti-bacterial, antioxidant, and anti-inflammatory property may aid in achieving periodontal health. To assess the clinical efficacy of GSE in adjunct to scaling and root planing (SRP) in healing of periodontal pockets. The present study was a longitudinal, parallel design, randomized clinical trial. Seventy-two patients (mean age 39.2±8.6 years) with periodontal pockets were randomly divided into two groups; Test group received intra-pocket delivery of GSE with SRP and Control group received SRP alone. The clinical parameters like Plaque Index (PI), Gingival Index (GI), Probing Depth (PD) and Relative Attachment Level (RAL) were recorded at baseline and 3 months. 64 patients completed the study. Test group at the end of 3 months had statistically significant reduced PD (p=0.002) and RAL (p=0.01). No significant difference was observed for PI and GI at the end of 3 months. Intra-pocket application of GSE with SRP could be beneficial in management of periodontal pockets.
Asunto(s)
Periodontitis Crónica , Extracto de Semillas de Uva , Periodontitis , Adulto , Índice de Placa Dental , Raspado Dental , Estudios de Seguimiento , Humanos , Persona de Mediana Edad , Pérdida de la Inserción Periodontal , Bolsa Periodontal , Periodontitis/tratamiento farmacológico , Aplanamiento de la Raíz , Resultado del TratamientoRESUMEN
The yield for the multistrange Xi(-) hyperon has been measured in 6A GeV Au+Au collisions via reconstruction of its decay products pi(-) and Lambda, the latter also being reconstructed from its daughter tracks of pi(-) and p. The measurement is rather close to the threshold for Xi(-) production and therefore provides an important test of model predictions. The measured yield for Xi(-) and Lambda are compared for several centralities. In central collisions the Xi(-) yield is found to be in excellent agreement with statistical and transport model predictions, suggesting that multistrange hadron production approaches chemical equilibrium in high baryon density nuclear matter.
RESUMEN
Source images are extracted from two-particle correlations constructed from strange and nonstrange hadrons produced in 6A GeV Au+Au collisions. Very different source images result from pp vs p Lambda vs pi(-)pi(-) correlations. Scaling by transverse mass can describe the apparent source size ratio for p/pi(-) but not for Lambda/pi(-) or Lambda/p. These observations suggest important differences in the space-time emission histories for protons, pions, and neutral strange baryons produced in the same events.
Asunto(s)
Acetanilidas/efectos adversos , Compuestos de Anilina/efectos adversos , Herbicidas/efectos adversos , Fosfatos/metabolismo , Microbiología del Suelo , Contaminantes del Suelo/efectos adversos , Disponibilidad Biológica , Oryza , Fósforo/metabolismo , Fósforo/farmacocinética , Raíces de Plantas , SolubilidadRESUMEN
Rapidity distributions of protons from central 197Au+197Au collisions measured by the E895 Collaboration in the energy range from (2-8)A GeV at the Brookhaven AGS are presented. Longitudinal flow parameters derived using a thermal model including collective longitudinal expansion are extracted from these distributions. The results show an approximately linear increase in the longitudinal flow velocity,
RESUMEN
Three-particle correlations have been measured for identified pi(-) from central 158A GeV Pb+Pb collisions by the WA98 experiment at CERN. A substantial contribution of the genuine three-body correlation has been found as expected for a mainly chaotic and symmetric source.
RESUMEN
Four insecticides, viz., BHC, phorate, carbofuran, and fenvalerate, were applied at the rate of 7.5, 1.5, 1.0, and 0.35 kg a.i. ha(-)(1), respectively, to investigate their effects on the growth and activities of N(2)-fixing and phosphate-solubilizing microorganisms in relation to the availability of N and P in laterite (Typic Orchragualf) soil. Insecticides in general, and BHC and phorate in particular, stimulated the proliferation of aerobic nonsymbiotic N(2)-fixing bacteria and phosphate-solubilizing microorganisms and also their biochemical activities, such as nonsymbiotic N(2)-fixing and phosphate-solubilizing capacities, which resulted in greater release of available N (NH(4)(+) and NO(3)(-)) and P in soil. All the insecticides were persistent in soil for a short period of time, and the rate of dissipation was highest for fenvalerate followed by phorate, carbofuran, and BHC, depicting the half-lives (T(1/2)) 8.8, 9.7, 16.9, and 20.6 days, respectively. The insecticides followed first-order reaction kinetics during their dissipation in soil.
Asunto(s)
Insecticidas/farmacología , Fijación del Nitrógeno/efectos de los fármacos , Nitrógeno/metabolismo , Fósforo/metabolismo , Microbiología del Suelo , Suelo/análisisAsunto(s)
Hexaclorociclohexano/análisis , Insecticidas/análisis , Residuos de Plaguicidas/análisis , Plantas , Piretrinas/análisis , Suelo/análisis , Carbono/análisis , Carbono/química , Cromatografía de Gases , Semivida , Hexaclorociclohexano/farmacología , Insecticidas/farmacología , Nitrilos , Nitrógeno/análisis , Nitrógeno/química , Residuos de Plaguicidas/farmacocinética , Residuos de Plaguicidas/farmacología , Fósforo/análisis , Fósforo/química , Desarrollo de la Planta , Plantas/efectos de los fármacos , Piretrinas/farmacologíaRESUMEN
A field experiment was conducted to investigate the effect of four insecticides, HCH, phorate, carbofuran and fenvalerate, at recommended doses on the preponderance of bacteria, actinomycetes and fungi. We also measured the persistence of the insecticides in the rhizosphere soil of rice. HCH and fenvalerate stimulated the proliferation of all of the microorganisms significantly. Phorate increased the population of bacteria and actinomycetes. Carbofuran accentuated the preponderance of actinomycetes in soil. Insecticides, in general, did not have marked influence on the proliferation of Bacillus, Streptomyces, Aspergillus and Fusarium in soil. However, we observed a stimulation of growth of Staphylococcus, Proteus and Sarcina with HCH, Pseudomonas, Corynebacterium, Erysipelothrix and Rhizopus with phorate, Serratia, Corynebacterium, Klebsiella, Escherichia, Rhizopus and Humicola with carbofuran, and Staphylococcus, Sarcina, Klebsiella and Nocardia with fenvalerate. On the other hand, there was an inhibition in growth of Pseudomonas, Micrococcus, Nocardia and Penicillium with HCH, of Pseudomonas, Micrococcus and Penicillium with carbofuran, and of Pseudomonas, Micrococcus and Micromonospora with fenvalerate. Different types of insecticides exhibited differential patterns of dissipation in soil. HCH had the highest persistence followed by phorate, carbofuran and fenvalerate, respectively.
Asunto(s)
Actinomycetales/efectos de los fármacos , Bacterias/efectos de los fármacos , Hongos/efectos de los fármacos , Insecticidas/farmacología , Suelo/análisis , Carbofurano/farmacología , Hexaclorociclohexano/farmacología , Insecticidas/análisis , Nitrilos , Oryza , Forato/farmacología , Piretrinas/farmacologíaRESUMEN
Adult female rabbits were given daily intramuscular injections of 0.5 microgram of oestradiol diproprionate for four weeks. Weekly drum-stick counts were made from their blood smears and percent incidences of drum-sticks in the neutrophils was recorded. A highly significant increase in the drum-stick counts compared to the control animals was noted after one week's treatment with the oestrogen. Subsequent values after 2nd, 3rd and 4th week's treatment were not significantly different from values obtained from the corresponding untreated animals. It was concluded that oestrogen produces only an initial increase in the drumstick count and subsequent continued treatment neither increases nor decreases the drum-stick counts significantly.