Investigating cryopreservation techniques for maintaining morphology and in vitro viability of cartilage and skin from Spix's yellow-toothed cavies (Galea spixii Wagler, 1831) for conservation through biobanks.

Conservation of the genetic diversity through skin and cartilage biobanks represents an essential strategy for maintaining biodiversity. Biobanks for the wild species of the order Rodentia have been little studied. Considering that the cryopreservation technique has specific relationships with the tissue and species of interest, we propose investigating different techniques for preserving tissue integrity and cell viability after cartilage and skin culture from Spix's yellow-toothed cavies. Subsequently, two techniques [solid-surface vitrification (SSV) vs. slow freezing (SF)] were used for cartilage and skin cryopreservation. Tissues not subjected to cryopreservation were used as controls. All tissues were evaluated for morphology and proliferation by histological techniques. Moreover, fragments were cultured, and cells were evaluated for viability, proliferation, metabolism, and apoptosis. Regardless of the cryopreservation technique, no differences were observed for the thickness of the epidermis, dermis, skin, spinous and basal layers, fibroblasts, and proliferative activity regarding the number of nucleolar organizer regions (NOR). SSV ensured better maintenance of epidermal cells, normal chondrocytes, filled gaps, collagen fibers, proliferative activity by NOR area/cell, and reduced perinuclear halos and empty gaps compared to SF. SF ensured the conservation of corneum thickness compared to the control. Although both techniques promoted cell recovery after culture, cells from SF resulted in better subconfluence time and day with cell growth around fragments compared to SSV. In conclusion, both cryopreservation techniques resulted in viable cells after culture. However, SSV promoted better maintenance of tissue morphological integrity, and SF ensured the preservation of all cell quality parameters in Spix's yellow-toothed cavies.

High prevalence of dengue, Zika, and chikungunya viruses in blood donors during a dengue outbreak and an endemic period in Colombia.

Objective: Arboviruses pose a challenge in ensuring the supply of pathogen-free blood components because they are not routinely screened in blood banks, and blood components from infected asymptomatic donors could be transfused. This study aimed to detect and characterize arboviral infections in Colombian blood donors. Methods: In a cross-sectional study, the prevalence of dengue (DENV), Zika (ZIKV), and chikungunya (CHIKV) viruses and co-infections of blood donors were compared between an epidemic period (November 2019-February 2020, n = 462) and an endemic period (November 2021-August 2022, n = 1,119). Viral RNA from each donor serum was purified, and the viruses were detected using a previously standardized multiplex hemi-nested RT-PCR protocol. Subsequently, donors who tested positive were surveyed 15 days after the detection of the virus to identify clinical characteristics related to the arboviral infection. The prevalences of each virus were presented as percentages and compared between epidemic and endemic periods. Results: Significantly higher prevalences were found in the epidemic period compared with the endemic period for DENV (14.5 vs. 1.9%), ZIKV (7.8 vs. 0.3%), CHIKV (8 vs. 3.3%), and co-infections (4.3 vs. 0.2%). The survey response rate of positive donors in the two periods was 83/175 (47%). In total, 57% of the donors surveyed were asymptomatic. Symptomatic donors most frequently reported headache (31%), malaise (13%), arthralgia (10%), and fever/chills (8%). Conclusion: The prevalence observed in epidemic and endemic periods was higher than that reported in other studies in the Americas. The high proportion of asymptomatic cases found, in addition to the mild and nonspecific manifestations among the symptomatic, may limit the effectiveness of the donor selection criteria used to mitigate the risk of transfusion-transmitted arboviruses.

Long-term preservation of established fibroblast lines from six-banded armadillos (Euphractus sexcintus, Linnaeus, 1758) by extended passage and cryopreservation.

Establishing new somatic cell cultures has raised significant attention as an effective and convenient way to preserve genetic samples for different applications. Although many lines have been established in model animals, none derived from six-banded armadillo species is currently available. We report the successful isolation and characterization of fibroblasts from six-banded armadillos, evaluating the cell quality after extended culture and cryopreservation. Initially, we collected ear skin from five captive adult individuals and identified fibroblast lines by morphology, karyotyping, and immunophenotyping assays. The isolated fibroblasts were evaluated after several passages (fourth, seventh, and tenth passages) and cryopreservation by slow freezing. Cell morphology, viability, metabolism, proliferative activity, mitochondrial membrane potential, and apoptosis levels were analyzed. The skin explants had great adhesion, and cell outgrowth could be seen after 3-6 d. The cells were verified as fibroblasts at the fourth passage by vimentin expression and normal karyotype (2n = 58). The viability remained high (> 87%) and constant from the fourth to the tenth passage (p > 0.05). The passages did not change the cell morphology and metabolic and growth rates. Moreover, cryopreservation did not affect most evaluated parameters; post-thawed cells maintained their viability, growth, metabolism, and apoptosis levels. Nevertheless, cryopreservation increased mitochondrial membrane permeability and cell population doubling time compared to non-cryopreserved cells (p < 0.05). In summary, viable fibroblasts can be obtained from six-banded armadillo skin while conserving their quality as the number of passages increases and featuring few changes after cryopreservation.

Characterization of cornea donors at a tissue center in the city of Medellin, Colombia.

The cornea transplant is considered the most frequently performed type of transplant in the world, with a demand that has been increasing in recent years. An observational descriptive study was conducted, focusing on the ocular tissue extracted from cadaveric donors from January 2019 to December 2021 at the Red Cross Eye Bank in Medellin, Colombia. This is the first epidemiological characterization of corneal donor tissues within the eye banks of our city, where high rates of violence-related deaths explain that tissue donors are mostly young individuals. This, in turn, results in excellent counts of endothelial cells and tissue viability in their microscopic studies. Additionally, there are lower rates of discarded tissues compared to similar studies.

Desafios para o suporte à amamentação em homens transgêneros sob à luz da interseccionalidade / Intersectionality and challenges in support for chest-feeding transgender men

Resumo O objetivo deste artigo é apreender os desafios nas vivências dos usuários e profissionais de Banco de Leite Humano no atendimento a homens transgêneros no contexto da amamentação sob à luz da Interseccionalidade. Estudo qualitativo descritivo-exploratório a partir de entrevistas realizadas com seis profissionais do Banco de Leite Humano, que atenderam previamente homens trans no contexto de amamentação, e dois homens trans bissexuais, que amamentaram ao peito. Os dados foram tratados pela Análise Temática com auxílio do software Atlas.ti versão 9.0. Observam-se lacunas nas esferas educacionais, institucionais e na gestão, associadas a questões pessoais e sociais, que reproduzem um modelo pré-concebido normativo, desconsiderando as singularidades requeridas no atendimento à população trans no contexto da amamentação. A cisheteronormatividade e a supremacia do profissional operam em âmbitos pessoais, sociais e institucionais para a segregação de homens transgêneros nos serviços de suporte à amamentação. A análise interseccional destes desafios permite uma visão global dos fatores de segregação e a implementação de políticas públicas promotoras da justiça social.

Abstract This article tried, from an intersectional standpoint, to grasp the challenges experienced by health professionals and service users of human milk banks in provision of care for transgender men chestfeeding. This exploratory, descriptive qualitative study drew on interviews of six human milk bank staff, who had previously assisted trans men in relation to chestfeeding and two bisexual trans men, who chestfed. The data was treated by thematic analysis, supported by Atlas.ti software, version 9.0. Lacunas in the educational, institutional and management spheres, associated with personal and social issues, reproduce a pre-conceived normative model and disregard the special demands of providing chestfeeding care for the trans population. Cisheteronormativity and "professional supremacy" operate in personal, social and institutional respects to segregate transgender men in lactation support services. Intersectional analysis of these challenges affords an overall view of segregative factors and enables public policies to be introduced to promote social justice.

Principais motivos de descarte de córneas para transplante na Paraíba: por que o anti-HBc merece atenção?* / Main reasons for discarding corneas for transplant in Paraíba: why does anti-HBc deserve attention?*

RESUMO Objetivo: Identificar o perfil dos doadores de tecidos oculares humanos na área de atuação do Banco de Olhos da Paraíba, destacando o impacto da sorologia positiva para hepatite B no descarte dos tecidos para transplante. Métodos: O estudo é transversal e utilizou dados do Banco de Olhos da Paraíba entre janeiro de 2013 e dezembro de 2022. Dados sobre procedência, idade, sexo, causa do óbito, tempo entre óbito e enucleação, resultados sorológicos e motivo de descarte das córneas dos doadores foram coletados. Resultados: O maior motivo de descarte foi por sorologia positiva (56,5%), sendo positivadas as sorologias positivas para hepatite B e HBsAg em 11,1% e 4,75% dos pacientes, respectivamente. Conclusão: A sorologia positiva para hepatite B como um critério de descarte absoluto é responsável por grande parcela de descartes, apesar da pouca informação sobre suas repercussões e representação de infectividade nos receptores do transplante.

ABSTRACT Objective: To identify the profile of human ocular tissue donors in the area covered by the Eye Bank of Paraíba (PB), highlighting the impact of positive serology for hepatitis B (anti-HBc) in the disposal of tissues for transplantation. Methods: This is a cross-sectional that uses data from the Eye Bank of Paraíba (PB) between January 2013 and December 2022. Data on origin, age, sex, cause of death, time between death and enucleation, serological results, and reason for discarded donor corneas were collected. Results: The main reason for discarding was due to positive serology (56.5%), with positive anti-HBc and HBsAg serology in 11.1% and 4.75% of patients, respectively. Conclusion: Anti-HBc positive serology as an absolute disposal criterion is responsible for great part of disposals, despite little information about its repercussions and representation of infectivity in transplant recipients.

Suficiência de leite humano para prematuros em Unidades de Terapia Intensiva / Suficiencia de leche humana para prematuros en Unidad de Cuidados Intensivos / Human milk sufficiency for premature babies in Intensive Care Units

Resumo Objetivo Analisar a suficiência de leite humano nas Unidades de Terapia Intensiva Neonatais da Região Metropolitana de São Paulo, segundo o quantitativo de prematuros, demanda estimada de leite humano e consumo efetivo. Métodos Estudo transversal em Postos de Coleta e Bancos de Leite Humano cadastrados na Rede Paulista de Bancos de Leite Humano em 2017. Utilizou-se dados de estatísticas vitais censitárias de 2017 para identificar a distribuição dos prematuros nas Redes Regionais de Atenção à Saúde. Resultados Participaram do estudo 100% dos Postos de Coleta e 84,6% dos Bancos de Leite Humano de São Paulo. Identificou-se uma insuficiência na distribuição do leite humano pasteurizado, entre a demanda estimada e o consumo efetivo dos prematuros. No período do estudo, apenas as regiões Centro e Sudeste atendiam 100% da cobertura de leite humano, seguidas da região do grande ABC com 44,62%. Conclusão A maioria dos Postos de coleta e Bancos de Leite humano da região metropolitana de São Paulo, não atendem todas as crianças prematuras. O gerenciamento destas unidades pode contribuir para estimular a captação de doadoras e a otimização do leite humano coletado.

Resumen Objetivo Analizar la suficiencia de leche humana en las Unidades de Cuidados Intensivos Neonatales de la Región Metropolitana de São Paulo, de acuerdo con la cantidad de prematuros, la demanda estimada de leche humana y el consumo efectivo. Métodos Estudio transversal en Puntos de Recolección y Bancos de Leche Humana registrados en la Red Paulista de Bancos de Leche Humana en 2017. Se utilizaron datos de estadísticas vitales censitarias de 2017 para identificar la distribución de los prematuros en las Redes Regionales de Atención en Salud. Resultados Participaron en el estudio el 100 % de los Puntos de Recolección y el 84,6 % de los Bancos de Leche Humana de São Paulo. Se identificó una insuficiencia en la distribución de leche humana pasteurizada entre la demanda estimada y el consumo efectivo de los prematuros. En el período del estudio, solo las regiones Centro y Sudeste atendían el 100 % de la cobertura de leche humana, seguidas por la región del Gran ABC con el 44,62 %. Conclusión La mayoría de los Puntos de Recolección y Bancos de Leche Humana de la región metropolitana de São Paulo no atiende a todos los bebés prematuros. La administración de estas unidades puede contribuir para estimular la captación de donantes y la optimización de la leche recolectada.

Abstract Objective To analyze human milk sufficiency in Neonatal Intensive Care Units in the Metropolitan Region of São Paulo according to the number of premature babies, estimated demand for human milk and actual consumption. Methods This is a cross-sectional study, carried out at Human Milk Collection Stations and Human Milk Banks registered with the São Paulo Network of Human Milk Banks in 2017. Data from 2017 census vital statistics were used to identify premature baby distribution in Regional Health Care Networks. Results 100% of Human Milk Collection Stations and 84.6% of Human Milk Banks in São Paulo participated in the study. Pasteurized human milk distribution insufficiency was identified between estimated demand and actual consumption by premature babies. During the study period, only the Center and Southeast regions met 100% of human milk coverage, followed by the Greater ABC region, with 44.62%. Conclusion Most Human Milk Collection Stations and Human Milk Banks in the metropolitan region of São Paulo do not assist all premature children. The management of these units can contribute to encouraging donor recruitment and collected human milk optimization.

Determinantes da doação de leite humano: dados de mulheres doadoras em um banco de leite / Determinantes de la donación de leche humana: datos de mujeres donantes en un banco de leche / Determinants of human milk donation: data from women donors at a milk bank

Resumo Objetivo Analisar as variáveis sociodemográficas das mulheres doadoras cadastradas em um Banco de Leite Humano associadas com o volume de leite doado. Método Foram coletados dados sociodemográficos de doadoras domiciliares cadastradas, bem como características de aleitamento entre 2017 e 2020 no Banco de Leite Humano do Hospital Universitário da Universidade Federal do Maranhão, São Luís. O volume de leite doado foi utilizado como variável de desfecho sendo analisada sua associação com as demais variáveis expositivas. Resultados Ao final do estudo, 619 doadoras tiveram as fichas analisadas (N = 5253). A mediana de volume doado foi de 1.285 ml (IQ 300 - 3570ml). A idade materna, a amamentação exclusiva e a idade do bebê foram as características que demonstraram associação com o volume de leite doado (p < 0,05). Conclusão e Implicações para a Prática: Na amostra estudada, as idades materna e do bebê e a prática de aleitamento exclusivo estiveram associados com o volume de leite doado. O conhecimento dos fatores socioeconômicos das doadoras de leite humano e a sua relação com o volume de leite doado podem subsidiar o desenvolvimento de ações para o aumento de volume de leite distribuído ao recém-nascido prematuros.

Resumen Objetivo Identificar las variables sociodemográficas de las mujeres inscriptas como donantes de leche en un Banco de Leche Humana y evaluar su asociación con el volumen de leche donado. Método Se recopilaron datos sociodemográficos de las donantes domiciliarias inscriptas como también las características de la lactancia materna entre 2017 y 2020 en el Banco de Leche Humana del Hospital Universitario de la Universidad Federal de Maranhão, São Luís. El volumen de leche donada se utilizó como variable de resultado y se analizó su asociación con otras variables de exposición. Resultados Al final del estudio, se analizaron los registros de 619 donantes. El volumen promedio donado fue de 1.285 ml (RIQ 300 - 3.570 ml). La edad materna, la lactancia materna exclusiva y la edad del bebé fueron las características que mostraron una asociación con el volumen de leche donado (p <0,05). Conclusión e Implicaciones para la Práctica: En la muestra estudiada, las edades maternas e infantiles y la lactancia materna exclusiva se asociaron con el volumen de leche donado. El conocimiento de los factores socioeconómicos de las donantes de leche materna y su relación con el volumen de leche donado puede respaldar el desarrollo de acciones para aumentar el volumen de leche distribuido a recién nacidos prematuros.

Abstract Objective To analyze the sociodemographic variables of women registered as milk donors at a Human Milk Bank and assess their association with the volume of milk donated. Method Sociodemographic data was collected from registered home donors, as well as breastfeeding characteristics between 2017 and 2020 at the Human Milk Bank of the University Hospital of the Federal University of Maranhão, São Luís. The volume of donated milk served as the outcome variable and its association with other exposure variables were analyzed. Results At the end of the study, a total of 619 donors had their records analyzed. The median volume donated was 1,285 ml (IQR 300 - 3,570 ml). Maternal age, exclusive breastfeeding, and the baby's age were the characteristics that showed an association with the volume of milk donated (p <0.05). Conclusion and Practice Implications In the studied sample, maternal and infant age and exclusive breastfeeding practice were associated with the volume of milk donated. Knowledge of the sociodemographic factors of human milk donors and their relationship with the volume of milk donated can support the development of actions to increase the volume of milk distributed to premature newborns.

Limites e potencialidades para as ações de controle sanitário em serviços hemoterápicos / Limits and potentialities for health control actions in Hemotherapy services

Resumo Objetivou-se discutir os limites e as potencialidades, sob a perspectiva de gestores de serviços de Hemoterapia/Hemocentro, para a execução das ações e as relações entre os agentes/equipes da VISA estadual e municipal com os Hemocentros. A partir de abordagem qualitativa, utilizaram-se, para análise de conteúdo, oito entrevistas de representantes gestores de hemocentros de diferentes estados, distribuídos nas cinco regiões brasileiras. Os achados evidenciaram limitação no diálogo entre as instituições; mudança de pessoal e rotatividade de gestores; tempo burocrático; notificação descentralizada; difícil estruturação ou ausência do Núcleo de Segurança do Paciente, como limitações. E como potencialidades: atuação da VISA como colaboradora para os processos de qualificação; processos de planejamento construídos de modo articulado e colaborativo; colaboração para a realização de treinamentos e capacitações das equipes; experiência profissional dos trabalhadores de ambas as instituições para o entendimento da rotina dos serviços e melhora do diálogo. Portanto, os limites e as potencialidades evidenciadas a partir deste estudo refletem sobre o desenvolvimento das ações, responsabilidades e diálogo entre os serviços, os quais devem ser considerados para a elaboração de estratégias e desenvolvimento do trabalho articulado e integrado.

Abstract It aimed to discuss the limits and potentialities, from the perspective of managers of Hemotherapy/Hemocenter services, for the accomplishment of actions and the relationships between state and municipal VISA agents/teams with the Hemocenters. From a qualitative approach, eight interviews with managing representatives of hemocenters from different states, distributed in the five Brazilian regions, were used for content analysis. The findings showed a limitation in the dialogue between the institutions; staff change and manager turnover; bureaucratic time; decentralized notification; difficult structuring or absence of the Patient Safety Center, such as limitations. As potentialities: VISA's role as a collaborator in the qualification processes; planning processes constructed in an articulated and collaborative way; collaboration to carry out training and qualification of teams; professional experience of workers from both institutions to understand the routine of services and improve dialogue. Therefore, the limits and potentialities evidenced from this study reflect on the development of actions, responsibilities and dialogue between the services, which must be considered for the elaboration of strategies and development of articulated and integrated work.

Impacto da pandemia da COVID-19 na doação de córnea e atuação do Banco de Olhos na Região da Zona da Mata Mineira / Impact of the COVID-19 pandemic on cornea donation and Eye Bank operation in the Zona da Mata Mineira Region

RESUMO Objetivo: Avaliar o impacto da pandemia da COVID-19 nas doações de córnea e na atuação de um banco de olhos na região da Zona da Mata Mineira. Métodos: Análise retrospectiva de prontuários de todas as doações obtidas pelo Banco de Olhos Hospital Regional Dr. João Penido, de Juiz de Fora (MG), entre 2017 e 2022, comparando-se os períodos pré (janeiro de 2017 a 11 de março de 2020) e pós-pandemia (12 de março de 2020 a dezembro de 2022). Resultados: Verificou-se uma redução nas doações de córnea e no número de tecidos corneanos liberados para transplantes no período pós pandemia, 68,2 e 67,3% respectivamente. Não houve diferença estatística no sexo, idade média, causa básica de óbito dos doadores, nos números de globos oculares não preservados e de córneas não preservadas entre os períodos pré e pós-pandemia. As taxas de liberação de córneas preservadas e aproveitamento das doações foram maiores no período pós-pandemia: 86,5 versus 79,0% e 68,1 versus 63,0%, respectivamente. O número de tecidos corneanos liberados para transplantes óptico e tectônico foram estatisticamente maiores no período pré-pandemia (p<0,001). Conclusão: A pandemia da COVID-19 impactou negativamente nas doações de córnea e na atuação do banco de olhos na região da Zona da Mata Mineira.

ABSTRACT Objective: To assess the impact of the COVID-19 pandemic on corneal donations and the operation of the eye bank in the Zona da Mata Mineira Region. Methods: Retrospective analysis of medical records of all donations obtained by the Banco de Olhos Hospital Regional Dr. João Penido/FHEMIG, Juiz de Fora - MG between 2017 and 2022, comparing pre (January/2017 - March 11/2020) and post-pandemic (12/March/2020 - December/2022) periods. Results: There was a reduction in cornea donations and the number of corneal tissues released for transplants in the post-pandemic period, 68.2% and 67.3%, respectively. There was no statistical difference in gender, average age, basic cause of death of donors, in the number of non-preserved eyeballs and non-preserved corneas between the pre- and post-pandemic periods. The rates of release of preserved corneas and use of donations were higher in the post-pandemic period, 86.5% vs 79.0%, and 68.1% vs 63.0%, respectively. The number of corneal tissues released for optical and tectonic transplants were statistically higher in the pre-pandemic period (P<0.001). Conclusion: The COVID-19 pandemic had a negative impact on cornea donations and the eye bank's operations in the Zona da Mata Mineira region.

Donor mothers portrayal and associated variables with breast milk donation in a Human Milk Bank / Retrato das mães doadoras e variáveis associadas à doação de leite materno em um Banco de Leite Humano

ABSTRACT Objective To describe and analyze the donor mothers' profile and variables associated with breast milk donation at Human Milk Bank in the municipality of Guarapuava, Paraná, Brazil. Methods This was a cross-sectional study obtained from information contained in the donor registration form between the period July 2013 (implementation of the service) to December 2019. The collected data were tabulated and descriptive analysis of variables and Chi-square and Fischer's exact association tests were performed. Results Of 1,491 records analyzed, this research identified that 70.73% of donors were between 20 to 34 years old; 67.69% had prenatal care at public health network and 61.37% have had cesarean delivery. Most mothers (61.44%) remained as donor for 29 days and 53.83% of them donated up to 500 ml of milk. In addition, statistically significant association was observed between milk volume donated and donation time for the following variables: prenatal place care, gestational age, child's birth weight, child age, and smoking. Maternal age was associated with a higher volume of donated milk. Conclusion The study's findings reinforce the approaching importance the possibility of human milk donation during prenatal care, with emphasis on private health service, and throughout the women's and children's health care network, as well as on the community.

RESUMO Objetivos Descrever e analisar o perfil de mães doadoras e as variáveis associadas à doação de leite materno em um Banco de Leite Humano no município de Guarapuava, Paraná, Brasil. Métodos Trata-se de um estudo transversal obtido a partir de informações constantes no formulário de cadastro de doadoras entre o período de julho de 2013 (implementação do serviço) até o mês de dezembro de 2019. Os dados coletados foram tabulados e posteriormente foi feita a análise descritiva das variáveis e testes de associação do Qui-quadrado e exato de Fischer. Resultados Das 1.491 fichas analisadas, a presente pesquisa identificou que 70,73% das doadoras tinham entre 20 e 34 anos de idade; 67,69% realizaram o pré-natal na rede pública de saúde e 61,37% realizaram parto cesárea. A maioria das mães, 61,44%, permaneceu como doadora por 29 dias e 53,83% delas doaram o volume de até 500ml de leite. Além disso, observou-se associação estatisticamente significativa entre o volume de leite doado e o tempo de doação para as seguintes variáveis: local de realização do pré-natal, idade gestacional, peso ao nascer, idade da criança e tabagismo. A idade materna se associou ao maior volume de leite doado. Conclusão Os achados do estudo reforçam a importância da abordagem ainda no pré-natal sobre a possibilidade de doação de leite humano, com ênfase no serviço privado de saúde, e, em toda a rede de atenção à saúde da mulher e da criança, bem como na comunidade.

Inmunoensayo quimioluminiscente para sífilis en donantes de sangre: ¿Los valores de lectura se correlacionan con el estado de la infección? / Chemiluminescent immunoassay for syphilis in blood donors: do signal strength values correlate with the infection status? / Imunoensaio quimioluminescente para sífilis em doadores de sangue: os valores de leitura estão correlacionados com o estado da infecção?

Resumen El objetivo del trabajo fue comparar el desempeño del tamizaje treponémico y no treponémico en dos períodos próximos en el tiempo en donantes de sangre y analizar la asociación de la intensidad de la señal de la prueba quimioluminiscente (QL) con la reactividad del enzimoinmunoanálisis (ELISA) y la reagina plasmática rápida (RPR). Se realizó el tamizaje con pruebas treponémicas. Se analizó la distribución de los valores de señal/valor de corte (S/CO) obtenidos por QL en función del ELISA y RPR y se evaluó su asociación entre dos grupos de resultados de laboratorio (1) ELISA+/RPR+ y (2): ELISA+/RPR-. Se procesaron 76 794 donaciones voluntarias. Al comparar las medianas entre grupos, se encontró que la relación S/CO de QL fue significativamente mayor para los donantes del Grupo 1 (19,5 vs. 8,10; p<0,001). Se concluye que la intensidad de la señal de la prueba cualitativa QL estaría asociada con la reactividad de la RPR y guardaría relación con el curso de la infección.

Abstract The objective of this work was to compare the performance of treponemal and non-treponemal screening in two periods close in time in blood donors and to analyse the association of the signal strength (signal-to-cutoff, S/ CO) of the chemiluminescent immunoassay (CIA) with the reactivity of the enzymeimmunoassay (EIA) and the rapid plasma reagin (RPR). Donors were screened with treponemal tests. The distribution of the S/CO values obtained by CIA was analysed based on EIA and RPR, and its association was evaluated. Group 1: ELISA+/RPR+ donors and Group 2: ELISA+/RPR-. A total of 76,794 voluntary donations were processed. Comparing the means between groups, it was found that the CIA S/CO ratio was significantly higher for Group 1 donors (19.5 vs. 8.10; p<0.001). In conclusion, the signal strength of the qualitative CIA test would be associated with the reactivity of the RPR and would be related to the course of the infection.

Resumo O objetivo do trabalho foi comparar o desempenho da triagem treponêmica e não treponêmica em dois períodos próximos no tempo em doadores de sangue e analisar a associação da intensidade do sinal da prova quimioluminescente (QL) com a reatividade da análise imunoenzimática (ELISA) e a reagina plasmática rápida (RPR). Foi realizada uma triagem com provas treponêmicas. Foi analisada a distribuição dos valores de sinal/valor de corte (S/CO) obtidos por QL em função da ELISA e RPR, e também a associação entre dois grupos de resultados laboratoriais (1): ELISA+/RPR+ e (2) ELISA+/ RPR-). Foram procesadas 76 794 doações de sangue voluntárias. Ao comparar as medianas entre os grupos, obteve-se que a relação S/CO de QL foi significativamente maior para os doadores de sangue do grupo 1 (19,5 vs. 8,10; p<0,001). Em conclusão, a intensidade do sinal da prova qualitativa QL estaria associada com a reatividade da RPR e guardaria relação com o curso da infecção.

Rechazo de donantes de sangre en un hospital peruano durante la pandemia de la covid-19 / Rejection of blood donors in a Peruvian hospital during the COVID-19 pandemic i: en

Introducción: El SARS-CoV-2 ha tenido un impacto negativo y significativo en los sistemas de salud a nivel mundial, lo cual además amenazó el suministro de sangre necesario para las transfusiones clínicas. Objetivo: Describir las causas del rechazo de donantes de sangre durante la pandemia de covid-19. Métodos: Se realizó un estudio observacional, transversal y retrospectivo en una población de donantes que acudió al Banco de Sangre del Hospital Nacional Ramiro Prialé Prialé, de Huancayo, en Perú, de julio del 2020 a igual mes del 2022. Las variables analizadas fueron sexo, grupo sanguíneo ABO, factor Rh y tipos y causas de rechazo. Resultados: Del total de 10 177 donantes de sangre, fueron diferidos y excluidos 3390 (33,3 %); la causa más frecuente de diferimiento fue el hematocrito bajo (18,0 %) y la de exclusión, la positividad por el anticuerpo del núcleo de la hepatitis B (36,8 %). Asimismo, predominó el sexo masculino entre los que fueron rechazados (55,2 %) y se evidenció un incremento de la tendencia politómica en los donantes diferidos (R²=0,2214) y excluidos (R²=0,1178). Conclusiones: La prevalencia de diferimiento y exclusión de donantes de sangre hallada en esta serie fue relativamente alta en comparación con la registrada en otros estudios, lo cual se debió principalmente, en cada caso respectivo, al hematocrito bajo y a la presencia del anticuerpo del núcleo de la hepatitis B.

Introduction: SARS-CoV-2 has had a negative and significant impact on global health systems, threatening the necessary blood supply for clinical transfusions. Objective: To describe the causes of rejection of blood donors during the COVID-19 pandemic. Methods: An observational, cross-sectional and retrospective study was carried out in a population of donors who attended the Blood Bank of Ramiro Prialé Prialé National Hospital, in Huancayo, Peru, from July, 2020 to the same month, 2022. The analyzed variables were sex, the ABO blood group, Rh factor and types and causes of rejection. Results: Of total of 10 177 blood donors, 3390 (33.3%) were differed and excluded; the most frequent cause of differing was the low hematocrit (18.0%) and the most frequent cause of exclusion was antibody to hepatitis B core antigen positivity (36.8%). Likewise, male sex predominated among those who were rejected (55.2%) and an increment of the polytomous tendency was evidenced in differed (R²=0.2214) and excluded donors (R²=0.1178). Conclusions: The prevalence of differing and exclusion in blood donors was relatively high compared to that reported in other studies, which was mainly due, in each respective case, to the low hematocrit and the presence of antibody to hepatitis B core antigen.

Dificuldades com amamentação e sua relação com a prática alimentar na alta hospitalar / Breastfeeding difficulties and their relationship with eating habits at hospital discharge / Dificultades con la lactancia y su relación con la práctica alimentaria en el alta hospitalaria

Objetivo: descrever as frequências das dificuldades com aleitamento materno durante a internação em alojamento conjunto e sua relação com a prática alimentar na alta hospitalar. Método: estudo transversal conduzido a partir de dados de uma coorte, realizada entre março de 2017 e abril de 2018, mediante entrevistas face a face e coleta de dados de prontuários hospitalares de um hospital de referência nacional para alto risco fetal e infantil. Utilizou-se a estatística descritiva por meio de frequências absolutas, relativas e teste qui-quadrado em todas as análises. Resultados: de 686 mães e seus recém-nascidos, 50,6% das mulheres apresentaram dificuldades com aleitamento materno, com destaque para: pega, sucção, tipo de mamilo, trauma mamilar. Dentre os recém-nascidos que receberam aleitamento materno exclusivo na alta hospitalar, 51,3% não apresentaram dificuldades com amamentação durante a internação. Conclusão: apesar da dificuldade apresentada em metade da amostra estudada, ressalta-se a necessidade do suporte precoce ao aleitamento materno exclusivo ainda no ambiente hospitalar(AU)

Objective: to describe the frequencies of breastfeeding difficulties during hospitalization in rooming-in and their relationship with eating habits at hospital discharge. Method: cross-sectional study conducted from data from a cohort, carried out between March 2017 and April 2018, through face-to-face interviews and data collection from hospital records of a national reference hospital for high fetal and infant risk. Descriptive statistics were used through absolute and relative frequencies and the chi-square test in all analyses. Results: of 686 mothers and their newborns, 50.6% of the women had difficulties with breastfeeding, with emphasis on: attachment, suction, type of nipple, nipple trauma. Among newborns who were exclusively breastfed at hospital discharge, 51.3% had no breastfeeding difficulties during hospitalization. Conclusion: despite the difficulty presented by half of the studied sample, the need for early support for exclusive breastfeeding is highlighted, even in the hospital environment(AU)

Objetivo: describir las frecuencias de dificultades para amamantar durante la hospitalización en alojamiento conjunto y su relación con los hábitos alimentarios al alta hospitalaria. Método: estudio transversal realizado a partir de datos de una cohorte, realizada entre marzo de 2017 y abril de 2018, a través de entrevistas cara a cara y recolección de datos de registros hospitalarios de un hospital de referencia nacional de alto riesgo fetal e infantil. Se utilizó estadística descriptiva a través de frecuencias absolutas y relativas y la prueba de chi-cuadrado en todos los análisis. Resultados: de 686 madres y sus recién nacidos, el 50,6% de las mujeres presentaron dificultades para amamantar, con énfasis en: agarre, succión, tipo de pezón, traumatismo en el pezón. Entre los recién nacidos que recibieron lactancia materna exclusiva al alta hospitalaria, el 51,3% no tuvo dificultades para amamantar durante la hospitalización. Conclusión: a pesar de la dificultad presentada por la mitad de la muestra estudiada, se destaca la necesidad de apoyo temprano para la lactancia materna exclusiva, incluso en el ámbito hospitalario(AU)

Barriers and motivations for blood donation: an integrative review.

INTRODUCTION: It has been estimated that the proportion of blood donors in Brazil is below 2.0 %, lower than that recommended by the World Health Organization, which is between 3 % and 5 % of the population. OBJECTIVE: The aim of this study was to analyze the factors that can influence blood donation. METHOD: This is an integrative review, whose bibliographic search was carried out through the Virtual Health Library, considering scientific articles indexed in the Latin American and Caribbean Literature in the Health Sciences database. RESULTS: This process was performed in July 2022 with term "blood donors" and 901 publications were identified, without delimitation of the study period or any other aspects. After applying the inclusion and exclusion criteria, 40 articles were fully reviewed. The studies were categorized according to the main content discussed in "characteristics and perspectives of donors", "perspective of health professionals and services" and "loyalty strategies: marketing and communication in health". Access to coherent information about the donation process was the motivational aspect evidenced in the three categories of analysis, that is, indispensable from the perspective of users, health professionals who work in blood therapy services and for marketing and communication in health. It is through the knowledge of the procedure that uncertainties and fear are decreased and loyal donors are increased. CONCLUSION: Altruism was the most frequent driving feeling in the consulted literature, whereas the lack of time and fear were the routine obstacles. The campaigns were identified as communication and health education actions relevant to attracting and retaining the donor, as well as applications and social networks.

The initial steps toward the formation of somatic tissue banks and cell cultures derived from captive Antillean manatee (Trichechus manatus manatus) skin biopsies.

The declining population of the Antillean manatee caused by ecosystem degradation and rising pollution has prompted interest in developing conservation strategies for this species. Given this scenario, somatic tissue banks are important tools for acquiring knowledge about the species, as well as for obtaining somatic cells for biotechnological and ecotoxicological applications. Therefore, we aimed to assess the effects of slow freezing (SF) and solid-surface vitrification (SSV) of the dermis of captive Antillean manatees on the histology and ultrastructure of the tissue and cell viability in culture. While the SSV did not change the dermis thickness, the SF maintained the tissue proliferative potential, assessed by the nucleolar organizer region area, similar to noncryopreserved tissues. Moreover, both techniques reduced the number of fibroblasts and increased the percentage of collagen fibers. Nevertheless, only tissues cryopreserved with SF and noncryopreserved tissues were able to produce cells after in vitro culture. Although SF did not alter cell viability and proliferative activity, cells derived from cryopreserved tissues showed decreased metabolism, altered apoptosis, increased levels of reactive oxygen species, and mitochondrial membrane potential compared to cells from noncryopreserved tissues. In summary, we demonstrated for the first time that Antillean manatee somatic tissues can be cryopreserved by SF, and cells can be obtained after in vitro culture. Improvements in cryopreservation conditions, especially vitrification, of somatic samples are needed to increase the quality of somatic tissue banks in this species.

Seroprevalence of Trypanosoma cruzi infection among blood donors in the state of Pará, Brazil.

INTRODUCTION: Chagas disease (CD) is a neglected pathology worldwide, considered a public health problem due to the high morbidity and mortality rate and its social impact. Thus, the objective was to estimate the prevalence of reactive serology for T. cruzi in blood donors in the units of the public blood network in the state of Pará (Brazil), as well as to describe the epidemiological profile of these donors. METHODS: This is a retrospective and descriptive study carried out at the Pará State Center for Hematology and Hemotherapy (HEMOPA) between 2016 and 2021, with analysis of secondary data (epidemiological and serological) of inapt blood donors for CD. RESULTS: Among the 533,674 screened samples, the reactivity for anti-T. cruzi was detected in 0.1% (548), of which 0.03% (166) were inconclusive and 0.07% (382) were positive. The hemonucleus of the city of Abaetetuba had the highest seroprevalence (0.6%). Regarding epidemiological characteristics, most blood donors were men (63.7%), aged between 31 and 45 (44.7%), racially mixed (79.2%), high school graduate (45.8%), single/widowed/divorced (62%), first-time donors (69%), spontaneous donations (58%) and from the state's countryside (69.9%). CONCLUSION: Over the years analyzed, we observed an increase in seroprevalence for T. cruzi emphasizing the need to maintain epidemiological control in the region and the application of more accurate serological tests in the screening of donor blood bags.

Prioritizing Colombian plant genetic resources for investment in research using indicators about the geographic origin, vulnerability status, economic benefits, and food security importance.

Germplasm banks are the most significant repository for plant genetic resources for food and agriculture (PGRFA) worldwide. Despite their strategic importance, national germplasm banks of tropical megadiverse developing countries such as Colombia have extremely limited funds. Therefore, making strategic decisions about research investment is essential. Here, we designed a data-driven approach to build an index that sorts Colombian PGRFA into three groups: high, medium, or low priority, based on four pillars of information from open-access databases and aligned with the sustainable goals of no poverty and zero hunger: Geographic origin, vulnerability status, economic benefits, and food security importance. We analyzed 345 PGRFA using the index, separating them into two groups, 275 already conserved in the Colombian germplasm bank (BGVCOL group) and 70 not currently conserved in the BGVCOL (NCB group). We used fuzzy logic to classify each PGRFA by each pillar and integrate it to obtain a priority index. Missing data for native crops were frequent in the BGVCOL group. Therefore we adopted an imputation strategy to fill the gaps and calculated the uncertainty. After applying the index, PGRFA with higher priority were 24 (8.72%) from the BGVCOL (i.e., 15 potatoes, three tomatoes, two tree tomatoes, pineapple, cocoa, papaya, and yacon) and one from NCB (i.e., coffee). We concluded that this methodology successfully prioritized PGRFA in Colombia and shows the big holes of knowledge for future research and alternatives to improve this index. The versatility of this methodology could be helpful in other genebanks with budget limitations for research investment. Supplementary Information: The online version contains supplementary material available at 10.1007/s10531-023-02599-7.

Gestão dos serviços hemoterápicos no contexto da pandemia de COVID-19 / Management of hemotherapy services in the context of the COVID-19 pandemic

Resumo Estudo que teve por objetivo analisar a gestão dos serviços hemoterápicos (SH) no contexto da pandemia de COVID-19, na perspectiva de gestores de municípios de diferentes regiões do Brasil. Pesquisa de abordagem qualitativa com entrevistas semiestruturadas aplicadas a gestores dos SH das três capitais brasileiras de diferentes regiões do Brasil, no período de setembro de 2021 a abril de 2022. O conteúdo textual das entrevistas foi submetido à análise textual lexicográfica a partir do uso do software Iramuteq, de acesso gratuito. As percepções dos gestores resultaram da análise da classificação hierárquica descendente (CHD), que gerou seis classes: disponibilidade de recursos para o desenvolvimento do trabalho; capacidade instalada dos serviços; estratégias e desafios para captação de doadores de sangue; riscos e proteção dos trabalhadores; medidas para gestão da crise; estratégias de comunicação para a adesão de candidatos para doação. A análise evidenciou diversas estratégias utilizadas pela gestão, bem como apontou limites e desafios para a organização e a gestão de serviços hemoterápicos, agudizados no contexto da pandemia.

Abstract This study aimed to analyze the management of hemotherapy services (HS) in the context of the COVID-19 pandemic from the perspective of municipal managers in different regions of Brazil. A qualitative approach with semi-structured interviews was applied to HS managers in the three Brazilian capitals, from different regions of Brazil, during the period between September 2021 and April 2022. The textual content of the interviews was submitted to lexicographic textual analysis using the free access software, Iramuteq. The managers' perceptions resulted from the descending hierarchical classification (DHC) analysis, which generated six classes: availability of resources for the development of work; installed capacity of services; strategies and challenges for attracting blood donors; risks and worker protection; measures for crisis management; and communication strategies for the adhesion of candidates for donation. The analysis highlighted several strategies used by the management, as well as pointed out limits and challenges for HS organization and management, exacerbated in the context of the pandemic.

The effects of DNA profiles: Measuring the effectiveness of DNA banks in criminal investigations in Brazil.

Since 2013, the Brazilian National Bank of Genetic Profiles (BNPG) of the Integrated Network of Genetic Profiles Bank (RIBPG) has been used to aid investigations, identifying who committed a crime based on biological samples found at crime scenes or on victims, which may be substantial evidence in a criminal case. This research evaluates the extent to which the types of genetic profiles and the number of hits influence the number of investigations aided. The study used data from institutions of the RIBPG adopting the period from 2016 to 2020 and organized them in a stacked panel with 98 observations. A regression mediation model was built to estimate the influence of the independent variables "forensic unknown profiles," "profiles of convicted offenders," and "profiles of suspected perpetrators or legal profiles" when mediated by the "hits" variable, influence the increase of the dependent variable "investigations aided," identified as a measure of the effectiveness of the forensic DNA banks. The results showed that the 1% increase in the variables "forensic unknown profiles" and "profiles of suspected perpetrators or legal profiles," mediated by "hits," was significant to produce "investigations aided." As for the variable "profiles of convicted offenders," there was no evidence that it contributed significantly to the increase in "hits" and "investigations aided." The study demonstrated that the increase in "forensic unknown profiles" by 126 and "profiles of suspected perpetrators or legal profiles" by 14 led to 12 "hits" in the RIBPG, offering support to 4 cases. The variable "profiles of convicted offenders" did not show significant results in terms of "hits" and "investigations aided."