Research advances on thymosin β4 in promoting wound healing / 中华烧伤杂志

With the aging of population and the development of social economy, the incidence of chronic wounds is increasing day by day, while the incidence of burns and trauma remains at a high level, making wound repair an increasingly concerned area in clinical practice. Thymosin β4 is a naturally occurring small molecule protein in vivo, which is widely distributed in a variety of body fluids and cells, especially in platelets. Thymosin β4 has biological activities of promoting angiogenesis, anti-inflammation, anti-apoptosis, and anti-fibrosis, and has many important functions in wound repair. Thymosin β4 has been observed to promote the healing of various wounds, such as burns, diabetic ulcers, pressure ulcers. This paper will review the molecular structure, mechanism of wound healing promotion, pharmacokinetics, and clinical application of thymosin β4, aiming to introduce its potential in wound treatment and the shortcomings of current researches.

Perspectivas de tratamiento para COVID-19 (en progreso) / Treatment prospects for COVID-19 (in progress)

CONTEXTO: Debido a la contingencia por COVID-19 provocada por el nuevo coronavirus, SARS-CoV-2, en la actualidad hay una intensa investigación de alternativas terapéuticas que sean seguras y eficaces. (Hay registrados 2208 protocolos de estudios en ClinicalTrials.gov1). Con el propósito de conocer el panorama terapéutico actual contra COVID-19, se realizó una búsqueda exhaustiva de las alternativas que han demostrado cierta eficacia en esta infección, concluyendo que los estudios que se han realizado tienen limitaciones metodológicas. Se trata de estudios no controlados, con alta probabilidad de sesgos que comprometen la validez interna y externa, consideran evidencia indirecta o la experiencia de expertos ante esa emergencia sanitaria, por lo que toda recomendación derivada de estos documentos debe de tomarse con extrema cautela. El uso de esas alternativas debe considerar los riesgos y los beneficios en casos individuales, en una decisión compartida entre médicos, pacientes y familiares ya que la mayoría de la evidencia se considera de baja o muy baja calidad. A la fecha no existe tratamiento específico en contra de este virus. BÚSQUEDA REALIZADA: Inmunoglobulinas intravenosas: Las inmunoglobulinas intravenosas (IgIV) es un grupo de IgG obtenido de donantes sanos, expuestos a enfermedades infecciosas endémicas, vacunas y microorganismos ubicuos que participan en la producción de anticuerpos IgG contra diferentes microorganismos y sus productos. El uso de inmunoglobulina intravenosa se ha

Effect of thymosin alpha-1 on subpopulations of Th1, Th2, Th17, and regulatory T cells (Tregs) in vitro

Thymosin alpha 1 (Tα1) has been shown to have beneficial effects on numerous immune system parameters, but little is known about the effects of Tα1 on patients with gastric carcinoma. The objective of this study was to determine the effect of Tα1 on subpopulations of Th1, Th2, Th17, and regulatory T cells (Tregs) in vitro, and to evaluate its efficacy as an immunoregulatory factor in patients with gastric carcinoma. We compared the effect of Tα1 on the frequency of CD4+ and CD8+ T cells, especially the CD4+CD25+Foxp3+ Tregs in peripheral blood mononuclear cells (PBMCs) from gastric carcinoma patients (N = 35) and healthy donors (N = 22). We also analyzed the changes in the proliferation of PBMCs in response to treatment with Tα1, and examined the production of Th1, Th2, and Th17 cytokines by PBMCs and tumor-infiltrating lymphocytes. The treatment of PBMCs from gastric cancer patients, with Tα1 (50 µg/mL) alone increased the percentage of CD4+CD25+Foxp3+ (suppressive antitumor-specific Tregs) from 1.68 ± 0.697 to 2.19 ± 0.795 percent (P < 0.05). Our results indicate that Tα1 increases the percentage of Tregs and IL-1β, TNF-α, and IL-6 in vitro.

Management of chronic hepatitis B infection: an update.

Almost 43 million people in India are harbouring hepatitis B virus (HBV) in their blood. Chronic HBV infection may be with or without sign/symptom of liver disease. Children are more prone to suffer from chronic HBV infection compared to adults and adolescents. Treatment aims at prevention of its sequelae namely cirrhosis and subsequent hepatocellular carcinoma. At the moment two major groups of agents are available for treatment. These are (a) immunomodulators and (b) antivirals. Present research aims at identification of a suitable agent to act on HBV covalently closed circular DNA persisting in hepatic cells for complete eradication of HBV.

Estudo clínico-imunológico da eficácia de timomodulina (Leucogen©) na otite média aguda recorrente e na amigdalite de repetição / Assessment of efficacy and safety of thymomodulin (Leucogen©) in the prevention of recurrent otitis media and recurrent tonsillitis

Os autores realizaram estudo em 35 crianças portadoras de otite média aguda recorrente e amigdalite de repetiçäo em um estudo duplo-cego com timomodulina e placebo. As crianças tratadas com timomodulina© receberam 4mg/kg/dia do medicamento diariamente durante três meses. Foi realizado controle bioquímico antes do tratamento e com cinco meses e nove meses após o término do tratamento. Além da avaliaçäo clínica foram realizados os seguintes exames: hemograma, TGO, TGP dosagem de IgA, IgG, IgM e IgE antes do início do tratamento e nos controles. Os resultados evidenciaram tendência à diminuiçäo do número de infecçöes e o número de ciclos de antibióticos, em relaçäo a informaçäo do último ano (pré-tratamento), principalmente no grupo tratado com timomodulina, assim como tendência ao aumento do IgA e IgG após tratamento com timomodulina, o que näo ocorreu no grupo placebo. Os exames laboratoriais, contagem de eritrócitos, de hematócrito, hemoglobina, leucócitos e transaminases (TGO e TGP) näo mostraram diferenças entre os grupos, nem alteraçöes 12 meses após o início da medicaçäo, evidenciando a ausência total de toxicidade da timomodulina. Houve apenas um efeito colateral com o uso de timomodulina (náusea e vômito) numa criança com amigdalite purulenta que tomou cefalexina concomitantemente

Poliartritis como manifestación de infección por virus C de la hepatitis: presentación de dos casos clínicos / Hepatitis virus C infection presenting as a polyarthritis: report of two cases

Several diseases have been associated with hepatitis C virus infections, including rheumatologic, hematologic and neoplastic disorders. We report two women, aged 57 and 39 years old whom the initial presentation of hepatitis C virus infection was an arthritis resembling rheumatoid arthritis. Laboratory work up revealed abnormal liver function tests, stimulating the search for hepatitis C virus infection, having both patients positive ELISA tests. Detection of this agent is extremely important when selecting a therapy for the articular disease, since several drugs used in the treatment of rheumatic disorders are potentially hepatotoxic and immunosuppression is risky in the setting of a viral hepatitis

Caracterización fisicoquímica de una fracción de timo. I. Aspectos generales. / Physico-chemical characterizationof a thymic fraction. I. General considerations

Los factores del timo (o timosinas) desempeñan un papelpredominante entre los biomodulares. El uso de fracciones del timo en el tratamiento de las disfunciones del sistema inmune se ha generalizado durante la últimadécada. La obtención de fracciones de timo a escala de planta piloto o industrial, precisa de un sistema de pruebas que garanticen, por medio de un adecuado control, la calidad de su estabilidad terapéutica. Con este objetvo se presenta la primera parte del diseño de un sistema de control, para caracterizar una serie de variables no referidas a la cantidad y calidad de los componentes de la biomodulina T (BMT)