Introdução: A aférese é um procedimento onde o sangue de um único doador é retirado, separado em hemácias, plasma e plaquetas. A plaquetaférese é importante na terapêutica transfusional de pacientes com câncer, diminuindo as chances de doenças relacionadas à transfusão e reações transfusionais. Objetivo: Apresentar uma análise comparada dos procedimentos de coleta por aférese de um serviço de hemoterapia entre os anos 2017 e 2018, período inicial de sua implantação. Métodos: 162 protocolos de aférese do setor de coleta de sangue da Unidade Transfusional do Hospital Universitário foram utilizados neste estudo. Trata-se, de um estudo retrospectivo, observacional, com revisão de dados dos procedimentos de doação por aférese. Resultados: 62 procedimentos por aférese foram realizados totalizando 200 hemocomponentes durante o período da pesquisa. A maior incidência de doadores foi do sexo masculino (93%) em comparação ao sexo feminino (7%).  Identificou-se 49 casos de reações adversas à doação (30,2%), sendo as mais frequentes: hematoma em local de punção (40,81%) e formigamento labial (38,78%), seguindo de reação vaso-vagal (16,33%). Conclusão: A implantação da coleta de plaquetas por aférese no serviço de hemoterapia promoveu maior suporte ao atendimento de pacientes com alta necessidade transfusional, agilidade e melhoria na qualidade do hemocomponente ofertado.

In addition to chronic diseases and empirical therapies against COVID-19, other factors are responsible for the high mortality rate associated with COVID-19. The objective of this study was to verify whether the exacerbated synthesis of inflammatory markers resulting from COVID-19 could compromise patients with coronavirus. The bibliographic research was performed in the Pubmed, LILACS, and SciELO databases between December 2020 and July 2021. For this study, the terms "COVID-19," "Biomarkers," "SARS-COV-2," and “Coronavirus 2019" are in advanced mode to gather the best evidence for the proposal of this manuscript. In the present construct, it is argued that COVID-19 increases the susceptibility of patients to a high stage of inflammation, increasing the virulence factors of the virus and its dissemination through the human body, where the synthesis of inflammatory factors plays a crucial role in the worsening of the cases. The virulence of the virus can be decreased by correcting the synthesis of these inflammatory markers, as it can prevent a less ineffective immune response and even increase the resistance of patients. Consequently, clinical trials in this direction should be carried out from the perspective of modulating responses at the molecular level, to find out how they work and how the underexpression of inflammatory cytokines may reduce the aggravation of patients with coronavirus.

Objective: To determine the frequency and specificity of erythrocyte alloimmunization in patients treated by hemotherapy at the University Hospital Professor Alberto Antunes - UFAL, Maceió-Alagoas, in the period 2013-2018. Methods: Retrospective analysis all patient records with request for red blood cell concentrate (RBC) with a positive erythrocyte antibody test. Results: The incidence of erythrocyte alloimmunization was higher in women n=144 (80.45%) than in men n=35 (19.55%). We detected 13 antibodies, the most frequent specificities identified were anti-D (35.20%), anti-M (12.30%) and anti-E (7.82%). The combination of antibodies occurred in twenty-six cases with prevalence for combinations of antibodies of the Rh system, anti-D + anti-C (23.08%). The highest incidence of alloantibodies was observed in pregnant women. Conclusion: The population studied had high levels of alloimmunization through the Rh System, greater specificity of alloimmunization in women through anti-D and higher rate of alloimmunization among men over the age of 40. Further studies are necessary for a better understanding of red blood cell alloimmunization for population of Alagoas.