Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 6 de 6
Filtrar
Mais filtros








Intervalo de ano de publicação
1.
Rev. bras. oftalmol ; 83: e0011, 2024. tab
Artigo em Português | LILACS | ID: biblio-1535606

RESUMO

RESUMO Objetivo: O objetivo deste estudo foi revisar os aspectos clínicos e patológicos da catarata congênita secundária às infecções por sífilis, toxoplasmose, rubéola, citomegalovírus e herpes simples. Métodos: Trata-se de uma revisão de literatura, na qual foram incluídos artigos de periódicos indexados às bases de dados PubMed®, Cochrane, Lilacs, Embase e SciELO de 2010 a 2023. Resultados: Foram encontrados 45 artigos, e, após seleção, restaram 9 artigos. Além disso, foram adicionados artigos para enriquecer a discussão. A infecção por sífilis está relacionada a alterações corneanas. O citomegalovírus e a toxoplasmose estão relacionados com a coriorretinite e/ou microftalmia. A rubéola é responsável por causar catarata, glaucoma, microftalmia e retinite em sal e pimenta. Conclusão: Foram abordadas as principais etiologias infecciosas e seu quadro clínico na CC. O melhor tratamento para CC é cirúrgico associado a acompanhamento clínico, mas a prevenção é a maneira mais eficaz de combater a CC de etiologia infecciosa. O diagnóstico precoce e o tratamento efetivo previnem alterações e sequelas visuais irreversíveis. Nesse contexto, mostram-se importantes as ações de políticas públicas para o melhor desfecho clínico e melhor qualidade de vida.


ABSTRACT Objective: To review the clinical and pathological aspects of CC secondary to infections by syphilis, toxoplasmosis, rubella, cytomegalovirus, herpes simplex. Methods: This is a literature review. Articles from journals indexed to PubMed, COCHRANE, LILACS, EMBASE and SCIELO from 2010 to 2023 were included. Results: A total of 45 articles were found, which, after selection, remained in 9 articles. Some articles were included to enrich the discussion in this topic. The infection caused by syphilis is related to corneal changes. Cytomegalovirus and Toxoplasmosis due to chorioretinitis and/or microphthalmia. Rubella is responsible for causing cataracts, glaucoma, microphthalmia, and salt and pepper retinitis. Conclusion: The main infectious etiologies and their clinical status in CC were addressed. The best treatment for CC is surgery associated with clinical follow-up, but prevention is the most effective way to combat CC of infectious etiology. Early diagnosis and effective treatment prevent irreversible visual changes and sequelae. In this context, public policy actions are important for the best clinical outcome and better quality of life.


Assuntos
Humanos , Complicações Infecciosas na Gravidez , Rubéola (Sarampo Alemão)/complicações , Catarata/congênito , Catarata/etiologia , Sífilis/complicações , Toxoplasmose/complicações , Citomegalovirus , Herpes Zoster/complicações
2.
Metabolites ; 13(6)2023 Jun 06.
Artigo em Inglês | MEDLINE | ID: mdl-37367886

RESUMO

Ongoing research explores the underlying causes of ulcerative colitis and Crohn's disease. Many experts suggest that dysbiosis in the gut microbiota and genetic, immunological, and environmental factors play significant roles. The term "microbiota" pertains to the collective community of microorganisms, including bacteria, viruses, and fungi, that reside within the gastrointestinal tract, with a particular emphasis on the colon. When there is an imbalance or disruption in the composition of the gut microbiota, it is referred to as dysbiosis. Dysbiosis can trigger inflammation in the intestinal cells and disrupt the innate immune system, leading to oxidative stress, redox signaling, electrophilic stress, and inflammation. The Nod-like Receptor (NLR) Family Pyrin Domain Containing 3 (NLRP3) inflammasome, a key regulator found in immunological and epithelial cells, is crucial in inducing inflammatory diseases, promoting immune responses to the gut microbiota, and regulating the integrity of the intestinal epithelium. Its downstream effectors include caspase-1 and interleukin (IL)-1ß. The present study investigated the therapeutic potential of 13 medicinal plants, such as Litsea cubeba, Artemisia anomala, Piper nigrum, Morus macroura, and Agrimonia pilosa, and 29 phytocompounds such as artemisitene, morroniside, protopine, ferulic acid, quercetin, picroside II, and hydroxytyrosol on in vitro and in vivo models of inflammatory bowel diseases (IBD), with a focus on their effects on the NLRP3 inflammasome. The observed effects of these treatments included reductions in IL-1ß, tumor necrosis factor-alpha, IL-6, interferon-gamma, and caspase levels, and increased expression of antioxidant enzymes, IL-4, and IL-10, as well as regulation of gut microbiota. These effects could potentially provide substantial advantages in treating IBD with few or no adverse effects as caused by synthetic anti-inflammatory and immunomodulated drugs. However, additional research is necessary to validate these findings clinically and to develop effective treatments that can benefit individuals who suffer from these diseases.

3.
Crit Rev Food Sci Nutr ; 63(3): 394-410, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-34236263

RESUMO

Coffee is probably the most popular beverage after water and is an important component in diet and health since its consumption is high worldwide. Globally, it is the most relevant food commodity being just behind crude oil. Besides its pleasant flavor, it is an antioxidant source due to polyphenols, which are protective compounds against several diseases. This study aimed to evaluate the economic relevance and perform a systematic review of green coffee's effects on human health. Databases such as MEDLINE-PubMed, EMBASE, COCHRANE, and GOOGLE SCHOLAR were searched, and PRISMA guidelines were followed. Green coffee is considered a novel food product because consumers usually consume only roasted coffee. It can be marketed as such or as an extract. Due to the content of bioactive compounds, which are partially lost during the roasting process, the extracts are usually marketed concerning the potential regarding health effects. Green coffee can be used as dietary supplements, cosmetics, and pharmaceuticals, as a source of antioxidants. It can benefit human health, such as improvement in blood pressure, plasma lipids, and body weight (thus contributing to the improvement of risk components of Metabolic Syndrome). Moreover, benefits for cognitive functions may also be included.


Assuntos
Antioxidantes , Café , Humanos , Antioxidantes/análise , Polifenóis/análise , Dieta , Pressão Sanguínea
4.
Complement Ther Med ; 43: 148-153, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-30935522

RESUMO

OBJECTIVE: this review aimed to investigate the effects of green tea polyphenols (GTP) in Ulcerative colitis and Crohn´s Disease. MATERIALS AND METHODS: The databases used were MEDLINE-and EMBASE (October 2009 to September 2018). Studies that reported the use of green tea and its effects on IBD were included. RESULTS: Ten articles were included in this review. DISCUSSION: GTP play a role in reducing TNF-α, Interleukin 1ß (IL-1ß), IL-6, IL-8, and 17; downregulate cyclooxygenase-mediated I kappa B kinase and transcription of NFκB. They regulate the pathways mediated by the Nuclear erythroid 2-related factor 2, mitogen-activated protein kinases, and signal transducer and the activator of transcription 1/3, and also minimize the lipid peroxidation. Furthermore, GTP can stimulate antioxidant enzymes. These actions reduce inflammatory and oxidant patterns in IBD resulting in improvement of the disease scores. CONCLUSIONS: We suggest that professionals and researchers take into account the use of GTP in further researches and in clinical practice in order to verify the real effects in humans.


Assuntos
Doenças Inflamatórias Intestinais/tratamento farmacológico , Polifenóis/farmacologia , Polifenóis/uso terapêutico , Chá/química , Animais , Antioxidantes/metabolismo , Humanos , Doenças Inflamatórias Intestinais/metabolismo , Transdução de Sinais/efeitos dos fármacos
5.
J Med Food ; 22(4): 416-420, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-30864854

RESUMO

Many studies have shown that plants can be therapeutic alternatives in the prevention or treatment of various diseases. Among these, green coffee may present different pharmacological effects related to the regulation of glycemia and lipid metabolism and is related to the prevention of cardiovascular diseases. The objective of our study was to evaluate the effects of using green and ripe coffee on the metabolic profile and muscular enzymes after the practice of physical exercises in Wistar rats. We included six groups: G1 (control group), G2 (group submitted to swimming), G3 (group that consumed green coffee), G4 (group that consumed green coffee and was submitted to swimming), G5 (group that consumed ripe coffee), and G6 (group that consumed ripe coffee and was submitted to swimming). Our results showed that there was a significant reduction in the percentage of visceral fat in G3, G5, and G6. We did not observe significant modifications in glycemia, lipids, lactate dehydrogenase, ferric reducing ability of plasma, and ferric-xylenol orange. The levels of creatine phosphokinase showed a reduction in the groups G2 and G4. No significant differences were found in the atherogenic indices. There is a global demand for natural compounds that can be safe, cheap, related to minimum side effects, and provide health benefits. Our results show that the use of green or ripe coffee may contribute to reduce the percentage of visceral fat and consequently may protect against further complications once this tissue produces proatherogenic hormones. Furthermore, green coffee may play a role in protecting muscle injury after the practice of physical exercises.


Assuntos
Coffea/metabolismo , Café/metabolismo , Músculo Esquelético/enzimologia , Natação , Animais , Aterosclerose , Coffea/química , Café/química , Creatina Quinase/metabolismo , Gordura Intra-Abdominal/metabolismo , L-Lactato Desidrogenase/metabolismo , Masculino , Músculo Esquelético/metabolismo , Ratos , Ratos Wistar
6.
Front Physiol ; 9: 5, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29479318

RESUMO

Oscillations of brain proteins in circadian rhythms are important for determining several cellular and physiological processes in anticipation of daily and seasonal environmental rhythms. In addition to the suprachiasmatic nucleus, the primary central oscillator, the cerebellum shows oscillations in gene and protein expression. The variety of local circuit rhythms that the cerebellar cortex contains influences functions such as motivational processes, regulation of feeding, food anticipation, language, and working memory. The molecular basis of the cerebellar oscillator has been demonstrated by "clock gene" expression within cells of the cerebellar layers. Genetic and epidemiological evidence suggests that disruption of circadian rhythms in humans can lead to many pathological conditions. Despite this importance, data about clock gene and protein expression in the cerebellum of diurnal (day-active) species, specifically primates, is currently poorly explored, mainly in regard to cellular identity, as well as the relationship with other molecules also involved in cerebellar functions. These studies could contribute to clarification of the possible mechanisms behind cerebellar rhythmicity. Considering that calcium binding proteins (CaBPs) play crucial roles in preserving and modulating cerebellar functions and that clock gene expression can be controlled by afferent projections or paracrine circadian signals such as the hormone melatonin, the present study aimed to describe cellular identities, distribution patterns and day/night expression changes in PER1, PER2, CaBPs, and MT1 and MT2 melatonin receptors in the cerebellar cortex of a diurnal primate using conventional fluorescence and peroxidase-antiperoxidase immunocytochemical techniques. PER1 and PER2 immunoreactive (IR) cells were observed in the Purkinje cells of the cerebellum, and MT1 and MT2 receptors were localized around Purkinje cells in the Pj layer in Bergmann cells. This identity was confirmed by the S100ß-IR of these cells. The highest expression of PER seen in the daytime analysis coincided with the highest expression of melatonin receptors. CaBPs showed day/night morphological and density changes in the cerebellar cortex. The presence of the same temporal variations in the expression of PER in the Pj neurons and in MT1 and MT2 receptors in Bergmann cells indicates a possible relation between these cells during the rhythmic processing of the cerebellum, in addition to the CaBP temporal morphological and density changes.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA