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INTRODUCTION: Vitiligo is a chronic skin condition with no cure. Clinical assessment and treatment evaluation relies heavily on clinometry tools and expert knowledge. The Vitiligo Extent Score has been proposed as one of the most reliable and easy-to-use clinometry tools for vitiligo. METHODS AND ANALYSIS: We proposed a scoping review to identify all the available evidence on the clinical research availability around the Vitiligo Extent Score. The following databases will be searched: MEDLINE (PubMed), Embase, Open Grey, Lens and Directory of Open Access Journals. In addition, the approach proposed in the Joanna Briggs Institute Reviewer's Manual will be followed. Finally, this review will be reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews. ETHICS AND DISSEMINATION: Ethics approval for this review is not required. We intend to publish the results in a specialised peer-reviewed journal and local, national and international conference presentations. It will also be incorporated as educational material in our institution's postgraduate programme in dermatology.
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Vitiligo , Humanos , Academias e Institutos , Bases de Dados Factuais , Conhecimento , MEDLINE , Projetos de Pesquisa , Literatura de Revisão como Assunto , Vitiligo/diagnóstico , Vitiligo/terapiaRESUMO
Resumen Introducción: el SARS-CoV-2 es un virus ARN de cadena simple que compromete diferentes órganos, incluyendo la piel. Los pacientes que cursan con este virus pueden presentar diferentes manifestaciones mucocutáneas. Objetivo: determinar la prevalencia de las lesiones mucocutáneas en pacientes hospitalizados por infección SARS-CoV-2/COVID 19 en el Hospital San Vicente Fundación Rionegro entre abril y junio del 2021. Materiales y métodos: estudio descriptivo transversal en pacientes hospitalizados con diagnóstico de infección por COVID-19 confirmado por pruebas serológicas y con lesiones mucocutáneas. Resultados: de 600 pacientes hospitalizados por COVID-19, 16 presentaron lesiones mucocutáneas para una prevalencia del 2,6%, y entre estos, 13 requirieron manejo en unidad de cuidados intensivos por síndrome de dificultad respiratoria aguda severa o enfermedad severa (81,25%) asociado a marcadores de mal pronóstico elevados. Los más elevados fueron la PCR, LDH o la presencia de linfopenia. Las lesiones vasculares fueron las más frecuentes (42,9%), que se manifestaron como púrpuras, vasculitis, livedo racemosa, perniosis y pseudoperniosis. Las erupciones o exantemas fueron de tipo maculopapulares (28,6%), eritematosas (19%) y urticariales (9,5%); además de úlceras en cavidad oral (8,8%) y vesículas (2,9%). El 75% de estos pacientes presentaron lesiones cutáneas en la fase activa de la enfermedad y el 25% en la fase resolutiva. Las morbilidades más frecuentes fueron hipertensión arterial (30%) y diabetes (20%). Seis pacientes fallecieron (37,5%). Conclusiones: las manifestaciones mucocutáneas asociadas al COVID-19, especialmente las de tipo vascular como las púrpuras, vasculitis y livedo racemosa, se asocian a formas graves de la enfermedad, especialmente en pacientes con ventilación mecánica asistida con un alto índice de mortalidad.
Abstract Introduction: SARS-CoV-2 is a single-stranded RNA virus that affects different organs, including the skin. Patients with this virus can present different mucocutaneous manifestations. Objective: to determine the prevalence of skin lesions in patients hospitalized for SARS-CoV-2 / COVID 19 infection at the Hospital San Vicente Fundación Rionegro between April and June 2021. Materials and methods: descriptive cross-sectional study in hospitalized patients with a diagnosis of infection by COVID-19 confirmed by serological tests and with mucocutaneous lesions. Results: of 600 patients hospitalized for COVID-19, 16 presented mucocutaneous lesions for a prevalence of 2,6 %, and among these, 13 required management in the intensive care unit due to severe acute respiratory distress syndrome or severe illness (81,25%) associated with elevated markers of poor prognosis. The most increased were PCR, LDH and/or lymphopenia. Vascular lesions were the most frequent (42,9%), manifested as purples, vasculitis, livedo racemosa, perniosis and pseudoperniosis. The eruptions or rashes were maculopapular (28.6%), erythematous (19%) and urticarial (9,5%), and ulcers in the oral cavity (8,8%) and vesicles (2,9%). 75% of these patients had skin lesions in the active phase of the disease and 25% in the resolution phase. The most frequent morbidity was arterial hypertension (30%) and diabetes (20%). six patients (37,5%) died. Conclusions: the mucocutaneous manifestations associated with COVID-19, especially those of a vascular type such as purples, vasculitis and livedo racemosa, are associated with severe forms of the disease, especially in patients with assisted mechanical ventilation with a high mortality rate.
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BACKGROUND: Type 2 diabetes (T2D) is a low-grade inflammatory condition with abnormalities in the immune response mediated by T lymphocytes and macrophages. Drug repositioning for immunomodulatory molecules is an attractive proposal for treating T2D. Nitazoxanide (NTZ) is a broad-spectrum drug with promising immunomodulatory effects. Thus, we investigated the immunomodulatory effect of NTZ on peripheral blood mononuclear cells (PBMCs) from patients with T2D. METHODS: Fifty patients with T2D were selected, and the proliferative response of T lymphocytes and the M1/M2 ratio of macrophages post cell culture were evaluated by flow cytometry, as well as measuring the concentration of cytokines by ELISA and the relative expression of microRNAs (miRNAs) related to the immune response by real-time PCR. RESULTS: NTZ exerts an inhibitory effect on the cell proliferation of T lymphocytes stimulated with anti-CD3 and anti-CD28 antibodies without modifying cell viability, and significant decreases in the supernatant concentrations of interleukin (IL)-1ß, IL-2, IL-6, IL-10, and IL-12. Furthermore, NTZ negatively regulates the relative expression of miR-155-5p without changes in miR-146a-5p. The M1/M2 ratio of monocytes/macrophages decreased the M1 and increased the M2 subpopulation by NTZ. CONCLUSIONS: Our results suggest that NTZ exerts immunomodulatory effects on PBMCs from T2D patients, and shows potential alternative therapeutic benefits.
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Leucócitos Mononucleares , Nitrocompostos , Tiazóis , Adulto , Diabetes Mellitus Tipo 2 , Humanos , MicroRNAsRESUMO
Thallium (TI) is one of the most toxic heavy metals. Human exposure to Tl occurs through contaminated drinking water and from there to food, a threat to health. Recently, environmental contamination by Tl has been reported in several countries, urging the need for studies to determine the impact of endogenous and exogenous mechanisms preventing thallium toxicity. The cytoprotective effect of metallothionein (MT), a protein with high capacity to chelate metals, at two doses (100 and 600 µg/rat), was tested. Prussian blue (PB) (50 mg/kg) was administered alone or in combination with MT. A dose of Tl (16mg/kg) was injected i.p. to Wistar rats. Antidotes were administered twice daily, starting 24h after Tl injection, for 4 days. Tl concentrations diminished in most organs (p < 0.05) by effect of PB, alone or in combination with MT, whereas MT alone decreased Tl concentrations in testis, spleen, lung and liver. Likewise, brain thallium also diminished (p < 0.05) by effect of PB and MT alone or in combination in most of the regions analyzed (p < 0.05). The greatest diminution of Tl was achieved when the antidotes were combined. Plasma markers of renal damage increased after Tl administration, while PB and MT, either alone or in combination, prevented the raise of those markers. Only MT increased the levels of reduced glutathione (GSH) in the kidney. Finally, increased Nrf2 was observed in liver and kidney, after treatment with MT alone or in combination with PB. Results showed that MT alone or in combination with PB is cytoprotective after thallium exposure.
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Metalotioneína , Tálio , Animais , Ferrocianetos , Masculino , Metalotioneína/metabolismo , Estresse Oxidativo , Ratos , Ratos Wistar , Tálio/metabolismo , Tálio/toxicidadeRESUMO
PURPOSE: Our purpose was to describe the phenotypic features and test for association of genes GRIN2A, RBFOX1 and RBFOX3 with rolandic epilepsy in patients from Colombia. METHODS: Thirty patients were enrolled. A structured interview was applied. In addition, saliva samples were collected from the patients and their parents. One polymorphism in each of GRIN2A, RBFOX1 and RBFOX3 genes was tested. RESULTS: The average age at onset was 5.3 years. Almost half the sample presented prolonged seizures (>5 minutes); although the majority of the patients presented their seizures only while asleep, over a quarter presented them only while awake. The most frequent comorbidity was the presence of symptoms compatible with attention-deficit hyperactivity disorder (ADHD). Personal history of febrile seizures and parasomnias were equally frequent (20%). Family history of any type of epilepsy was reported in 80% of the patients, followed by migraine (73.3%) and poor academic performance (63.3%). About half the sample reported sleepwalking in parents or sibs. Most patients had received pharmacologic treatment. We found no association of rolandic epilepsy with the single nucleotide polymorphisms tested. CONCLUSIONS: Our rolandic epilepsy cohort presents clinical features clearly different from other cohorts. For instance, age at onset is much earlier in our set of patients, and personal and family history of febrile seizures as well as parasomnias are highly prevalent in our sample. No association of rolandic epilepsy with variants at the 3 genes tested was found. This lack of association may reflect the high genetic heterogeneity of the epilepsies.
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Antígenos Nucleares/genética , Epilepsia Rolândica/genética , Proteínas do Tecido Nervoso/genética , Fatores de Processamento de RNA/genética , Receptores de N-Metil-D-Aspartato/genética , Adolescente , Criança , Pré-Escolar , Estudos de Coortes , Colômbia , Eletroencefalografia/métodos , Epilepsia Rolândica/fisiopatologia , Feminino , Humanos , MasculinoRESUMO
Taenia pisiformis infection causes important economic loss in farms. It is suggested that obesity has a major impact on infection and reproduction. We addressed the impact of T. pisiformis infection in normal and obese rabbits to evaluate its effect on parameters important in behavior and reproduction. T. pisiformis infection in obese rabbits decreased body weight. In the obese-infected rabbits, eosinophils and heterophiles were increased 23% by the infection (P ≤ 0.05). T. pisiformis decreased cholesterol by 13% in normal weight infected rabbits and 10% in obese group (P ≤ 0.05), while triglyceride and VLDL were increased by 23% and 45% in the non-infected obese group (P ≤ 0.05). The infection increased serum cortisol levels only in normal weight rabbits (P ≤ 0.05). Liver weight was 20% higher in obese and obese-infected rabbits (P ≤ 0.05). Testicular weight in obese-infected was 46% higher than normal weight (P ≤ 0.0001) and 20% more than the obese-non-infected (P ≤ 0.0001). Furthermore, the infection reduced the weight of submandibular glands in infected and obese-infected rabbits (P ≤ 0.05), body fat increased 10% in the obese-infected than in the obese, and infected group was 35% over the normal weight non-infected (P ≤ 0.01). Our results show that T. pisiformis alters metabolic characteristics in rabbits, which can impact on the production and welfare of animals.
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ETHNOPHARMACOLOGICAL IMPORTANCE: CORDIA MORELOSANA: Standley (Boraginaceae) is commonly used in folk medicine for the treatment of diarrhoea, kidney inflammation, diabetes, lung pain, bronchitis, asthma, hoarseness, cough and fever. AIM: Current work was conducted to develop a bio-guided isolation of antidiabetic compounds from ethanolic extract of Cordia morelosana (EECm). MATERIAL AND METHODS: The phytochemical bio-guided study was conducted by successive chromatographic techniques, and isolated compounds were characterized by 1D and 2D-NMR experiments. The in vivo antihyperglycemic and antidiabetic activities of EECm (100 mg/kg), and methyl rosmarinate (MR, 50 mg/kg) were determined on normoglycemic and diabetic murine models. Additionally, the in vitro activity was conducted to determine α-glucosidase inhibitory effect, and PPARs, GLUT4 and FATP expression on 3T3-L1 cells by RT-PCR. Acute and sub-chronic toxicological studies for EECm were conducted on rats, following the OECD guidelines (No. 420 and 407). RESULTS: EECm promotes significant α-glucosidase inhibition (55.6%) at 1 mg/kg respect to the control. Also, EECm (100 mg/kg) showed significant antihyperglycemic effect on oral glucose tolerance test (OGTT), and in non-insulin dependent type 2 diabetes (NIDD) model, had antidiabetic activity (p < 0.001) compared to controls. The bio-guided isolation allowed to obtain four known compounds described as rosmarinic acid (RA), methyl rosmarinate (MR), nicotiflorine and 1-O-methyl-scyllo-inositol. On the other hand, MR showed significant antidiabetic and anthiyperglycemic activities (p < 0.05), and overexpression of PPARγ, PPARα, GLUT-4 and FATP than control. Docking studies were conducted with PPARγ and PPARα, showing interesting binding mode profile on those targets. Finally, EECm displayed a LD50 > 2000 mg/kg and sub-chronic toxicological study reveals no toxic signs in animals tested compared to control. CONCLUSION: EECm showed significant antihyperglycemic and antidiabetic actions being RA and MR the main antidiabetic metabolites.
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Cordia , Hipoglicemiantes , Compostos Fitoquímicos , Extratos Vegetais , Células 3T3-L1 , Animais , Diabetes Mellitus Experimental/tratamento farmacológico , Diabetes Mellitus Tipo 2/tratamento farmacológico , Proteínas de Ligação a Ácido Graxo/genética , Transportador de Glucose Tipo 4/genética , Hipoglicemiantes/química , Hipoglicemiantes/farmacologia , Hipoglicemiantes/uso terapêutico , Hipoglicemiantes/toxicidade , Masculino , Camundongos , PPAR alfa/genética , PPAR alfa/metabolismo , PPAR gama/genética , PPAR gama/metabolismo , Compostos Fitoquímicos/análise , Compostos Fitoquímicos/farmacologia , Compostos Fitoquímicos/uso terapêutico , Compostos Fitoquímicos/toxicidade , Extratos Vegetais/química , Extratos Vegetais/farmacologia , Extratos Vegetais/uso terapêutico , Extratos Vegetais/toxicidade , Ratos Sprague-Dawley , Ratos Wistar , Testes de Toxicidade Aguda , Testes de Toxicidade Subcrônica , alfa-Glucosidases/metabolismoRESUMO
Parkinson's disease is considered to be due to an increase in the catabolism of dopamine by the action of monoamine oxidase (MAO) enzymes which leads to an increase in reactive oxygen species (ROS) and loss of dopaminergic neurons. Here, in a model of neurotoxicity inducible by 1-methyl-4-phenylpyridinium (MPP+), we tested the effect of hydroxytyrosol (HTy), a potent antioxidant, on generation of ROS. Five minutes after a single intravenous administration of 1.5 mg/Kg of Hty, Wistar rats received an intrastriatal micro-injection of 10 micrograms of MPP+ while control animals received saline solution. Six days later, all animals were treated with apomorphine (1 mg/Kg), subcutaneously and ipsilateral rotations were assessed within an hour. Then, the rats were sacrificed, striatal tissues were removed and their catecholamines and MAO-A and B activities were quantitated. Pretreatment with HTy significantly diminished the number of ipsilateral rotations. This recovery correlated with significant preservation of striatal dopamine and significant inhibition of of the MAO activity. These results are consistent with the inhibitory effect of HTy on the MAO isoforms and form a basis for the neuroprotective mechanism of this phenylpropanoid in MPP+ induced Parkinson's disease.
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Inibidores da Monoaminoxidase/farmacologia , Monoaminoxidase/metabolismo , Álcool Feniletílico/análogos & derivados , 1-Metil-4-fenilpiridínio/antagonistas & inibidores , Animais , Antioxidantes/metabolismo , Catecolaminas , Corpo Estriado/efeitos dos fármacos , Dopamina/metabolismo , Monoaminoxidase/farmacologia , Doença de Parkinson , Álcool Feniletílico/farmacologia , Isoformas de Proteínas/metabolismo , Ratos , Ratos WistarRESUMO
Obesity-induced inflammation, triggered by lipid-mediated activation of the Nlrp3 inflammasome, results in glucose metabolism alterations and type 2 diabetes. This knowledge has been generated using animals deficient for any of the different components of this inflammasome (Caspase-1, Asc or Nlrp3) in the C57BL/6 background. Unlike C57BL/6 mice, which carry allele 2 of the Nlrp1b gene (Nlrp1b2), Balb/c mice that carry allele 1 (Nlrp1b1) are less prone to develop alterations in the glucose metabolism when fed with a high fat diet. However, the molecular bases for these metabolic differences are unknown. Here we show that the Nlrp1b1 allele down regulates the adipose tissue inflammatory response attenuating glucose intolerance and insulin resistance in obese C57BL/mice. Our results indicate that the positive effects of the Nlrp1b1 inflammasome on glucose tolerance and insulin sensitivity involve IL-18-mediated effects on lipolysis, pointing out that differential expression of allelic variants of genes coding for inflammasome components might control susceptibility or resistance to develop diabetes in obese individuals.