Immunocytochemical evaluation of aquaporins and cell wall components and their influence on foliar water uptake in Andean Melastomataceae.

Andean ecosystems are characterized by high humidity, mainly from rain and fog events. Because of differences in altitude two Andean ecosystems - sub-Andean forest and Páramo -face different environmental pressures that affect leaf anatomy and cell wall composition and, consequently, species foliar water uptake (FWU) capacity. Here, FWU capacity of eight species in the Melastomataceae was evaluated and found to be related to proportions of cell wall components and aquaporins in the two ecosystems. Cellulose was labelled with Calcofluor white, and aquaporin and pectins were labelled with monoclonal antibodies. There were differences in plant FWU capacity in both ecosystems, with higher FWU capacity in sub-Andean forest species than in Páramo forest species. Cell wall components were positively related to FWU, with increased FWU related to pectin and aquaporin content of the plasma membrane. Differences in water availability in the two analysed environments led to differences in FWU capacity that are associated with leaf anatomical traits and cell wall composition. In these two environments, plants with similar traits are selected to respond to given environmental pressures. Traits that favour FWU in sub-Andean forest species may lead to further advances of these species in this environments.

Wunderlich syndrome as a rare complication of polyarteritis nodosa: a case report.

Spontaneous subcapsular and perirenal hemorrhage, known as Wunderlich syndrome (WS), is a rare clinical manifestation of polyarteritis nodosa (PAN). We report a case of a 48-year-old male with a history of recurrent episodes of leg muscle tenderness and dysesthesia, bilateral flank pain, painful nodular skin lesions in the lower limbs, weight loss, and difficult-to-control arterial hypertension. The abdominopelvic computed tomography angiography showed a large left perirenal hematoma, leading to the patient's admission to the intensive care unit. After the exclusion of infectious or neoplastic foci, the patient was diagnosed with PAN and started intravenous methylprednisolone pulses with a good response. Since WS is a rare initial clinical manifestation of PAN, an early diagnosis and aggressive treatment will significantly improve clinical outcomes.

Molecular identification of sharks from the genus Sphyrna (Elasmobranchii: Chondrichthyes) in Maranhão Coast (Brazil).

Sharks of the genus Sphyrna are under intense exploitation globally. In Brazil's northern coast, this genus represents a high proportion of fisheries landings and comprises four species. However, due to difficulty of specific identification when specimens are landed, most of the records are limited to the genus level. Here we analyzed the effectiveness of ITS2 (Internal Transcribed Spacer 2 of rDNA) fragment length protocol (Abercrombie et al., 2005) for identifying hammerhead shark species, comparing with the analysis of COI (Cytochrome oxidase subunit I) and ITS2 sequences. We evaluated samples of muscle tissue acquired in the main fishing ports of Maranhão: Carutapera, Raposa e Tutóia. Sampling was conducted between March 2017 to March 2018 and complemented with material deposited in collection (2015). COI results indicated the occurrence of endangered species which are prohibited to be landed. These include Sphyrna mokarran (67%), S. lewini (15%), S. tudes (3%), and S. tiburo (15%). For the ITS2 marker, we investigated the optimization of the protocol developed by Abercrombie (2005) for to improve the use in this geographical area througout design of a new primers.

In silico investigation of the role of miRNAs in a possible developmental origin of prostate cancer in F1 and F2 offspring of mothers exposed to a phthalate mixture.

A previous study using miRNA sequencing revealed that exposure to a mixture of phthalates during pregnancy and lactation dysregulated rno-miR-184 and rno-miR-141-3p in the ventral prostate (VP) of offspring. Here, rno-miR-184 and rno-miR-141-3 expressions were obtained by RT-qPCR in the VP of F1 males as well as in F2 offspring, aiming to establish a relationship with possible oncogenic targets through in silico analyses with multigenerational approach. Additionally, some targets were measured by western blots to highlight a possible relationship between the deregulated miRNAs and some of their targets. VP samples from rats exposed to a mixture of phthalates maternally during pregnancy and lactation (GD10 to PND21-F1) and VP from offspring (F2) were examined. The phthalate mixture at both concentrations (20 µg and 200 mg/kg/day) increased the expression of both miRNAs in the F1 (PND22 and 120) and F2 (descendants of F1-treated males) prostate. Target prediction analysis revealed that both microRNAs are responsible for modulating the expression and synthesis of 40 common targets. A phthalate target association analysis and the HPA database showed an interesting relationship among these possible miRNAs modulated targets with prostate adenocarcinoma and other oncogenic processes. Western blots showed alteration in P63, P53, WNT5, and STAT3 expression, which are targeted by the miRNAs, in the VP of F1/F2 males. The data draw attention to the epigenetic modulation in the prostate of descendants exposed to phthalates and adds to one of the few currently found in the literature to point to microRNAs signature as biomarkers of exposure to plasticizers.

Diamond-Blackfan anemia, the archetype of ribosomopathy: How distinct is it from the other constitutional ribosomopathies?

Diamond-Blackfan anemia (DBA) was the first ribosomopathy described in humans. DBA is a congenital hypoplastic anemia, characterized by macrocytic aregenerative anemia, manifesting by differentiation blockage between the BFU-e/CFU-e developmental erythroid progenitor stages. In 50 % of the DBA cases, various malformations are noted. Strikingly, for a hematological disease with a relative erythroid tropism, DBA is due to ribosomal haploinsufficiency in 24 different ribosomal protein (RP) genes. A few other genes have been described in DBA-like disorders, but they do not fit into the classical DBA phenotype (Sankaran et al., 2012; van Dooijeweert et al., 2022; Toki et al., 2018; Kim et al., 2017 [1-4]). Haploinsufficiency in a RP gene leads to defective ribosomal RNA (rRNA) maturation, which is a hallmark of DBA. However, the mechanistic understandings of the erythroid tropism defect in DBA are still to be fully defined. Erythroid defect in DBA has been recently been linked in a non-exclusive manner to a number of mechanisms that include: 1) a defect in translation, in particular for the GATA1 erythroid gene; 2) a deficit of HSP70, the GATA1 chaperone, and 3) free heme toxicity. In addition, p53 activation in response to ribosomal stress is involved in DBA pathophysiology. The DBA phenotype may thus result from the combined contributions of various actors, which may explain the heterogenous phenotypes observed in DBA patients, even within the same family.

Multi-Domain Interventions for Dementia Prevention - A Systematic Review.

OBJECTIVES: There is a growing incidence of cognitive decline and dementia associated with the ageing population. Lifestyle factors such as diet, physical activity, and cognitive activities may individually or collectively be undertaken to increase one's odds of preventing cognitive decline and future dementia. This study will examine whether clinical trials using multidomain lifestyle intervention can significantly decrease the risk of cognitive decline and therefore dementia. DESIGN, SETTING AND PARTICIPANTS: This systematic literature review of multidomain lifestyle interventions for the prevention of cognitive decline and dementia followed the PRISMA guidelines. Clinical trials involving multidomain intervention (i.e., diet and physical activity, or without cognitive training) in older adults (≥ 49 years old) at higher risk of dementia were identified through 5 electronic databases (EMBASE, MEDLINE, CINAHL, Cochrane, and Scopus). A comprehensive search was performed to identify and retrieve publications until 15 November 2022. Trials were published in English. RESULTS: The included studies (n=15) assessed change in cognition in response to a multidomain lifestyle intervention. However, the cognitive outcome measures used in these studies were heterogeneous. Despite this heterogeneity, two thirds of the studies showed improvement in cognition following a multidomain intervention (n=10 with a total of 9,439 participants). However, five studies reported no improvement in cognition following the multidomain intervention. The most common form of dietary intervention included higher amount of fruit and vegetable intake; whole-grain cereal products instead of refined; low fat options in milk and meat products; and limiting sucrose intake to less than 50 g/day. Most clinical trial studies were powered to examining the effects of multidomain interventions in cognition but were not designed to test the contribution of individual domains (i.e., dietary changes, increased physical activity, or increased cognitive stimulation alone). CONCLUSION: This systematic review aimed to determine the effect of multimodal lifestyle interventions on cognitive outcomes in older adults at risk of dementia. We found that participants with conditions that may increase the risk of dementia, (e.g., hypertension, cardiovascular fragility) do benefit from multi-modal lifestyle changes including diet, physical activity, and cognitive training. Two thirds of studies using multidomain lifestyle interventions showed improvements in cognitive function. Trials with a focus on cognitive training, dietary improvement, and physical activity may prevent or delay cognitive decline in older adults including those at risk of developing dementia. Future studies should consider longer follow-up periods and adequate power to be able to examine the effects of each lifestyle component in the context of multimodal interventions.

Nueva era de la medicina basada en las células madre mesenquimales: bases, retos y perspectivas / New era of mesenchymal stem cell-based medicine: Basis, challenges and prospects

Las células madre de origen mesenquimal (CMM) suscitan un interés especial debido a sus propiedades regenerativas, antiinflamatorias, antiapoptóticas, contra el estrés oxidativo, antitumorales o antimicrobianas. Sin embargo, su implementación en clínica se topa con inconvenientes de la terapia celular como la incompatibilidad inmunológica, la formación de tumores, la posible transmisión de infecciones, la entrada en senescencia celular y la difícil evaluación de seguridad, dosis y potencia; así como complejas condiciones de almacenamiento, elevado coste económico o uso clínico poco práctico. Considerando que los efectos positivos de las CMM se deben, en gran medida, a los efectos paracrinos mediados por el conjunto de sustancias que segregan (factores de crecimiento, citoquinas, quimiocinas o microvesículas), la obtención in vitro de esos productos biológicos posibilita una medicina regenerativa libre de células sin los inconvenientes de la terapia celular. No obstante, esa nueva innovación terapéutica implica retos, como el reconocimiento de la heterogeneidad biológica de las CMM y la optimización y estandarización de su secretoma (AU)

Stem cells of mesenchymal origin (MSC) arouse special interest due to their regenerative, anti-inflammatory, anti-apoptotic, anti-oxidative stress, antitumor or antimicrobial properties. However, its implementation in the clinic runs into drawbacks of cell therapy (immunological incompatibility, tumor formation, possible transmission of infections, entry into cellular senescence, difficult evaluation of safety, dose and potency; complex storage conditions, high economic cost or impractical clinical use). Considering that the positive effects of MSC are due, to a large extent, to the paracrine effects mediated by the set of substances they secrete (growth factors, cytokines, chemokines or microvesicles), the in vitro obtaining of these biological products makes possible a medicine cell-free regenerative therapy without the drawbacks of cell therapy. However, this new therapeutic innovation implies challenges, such as the recognition of the biological heterogeneity of MSC and the optimization and standardization of their secretome (AU)

Debilidad muscular proximal progresiva de inicio subagudo en un paciente anciano: descripción de un caso / Progressive proximal muscle weakness with subacute onset in an elderly patient: a case report

Introducción: Las estatinas son de los medicamentos más recetados. Aunque las estatinas generalmente se toleran bien, pueden provocar efectos secundarios musculoesqueléticos. La miopatía autoinmune necrotizante inducida por estatinas (SINAM) es una afección rara y la prevalencia sólo es de 1 de cada 100.000 personas. Este trastorno se caracteriza por debilidad muscular simétrica progresiva y grave, elevación marcada de la creatincinasa y síntomas persistentes a pesar de la interrupción de la estatina. La electromiografía suele mostrar un patrón de miopatía irritable inespecífico, indistinguible de otras miopatías inflamatorias. La biopsia muscular muestra la presencia de fibras necróticas, fibras en regeneración sin células inflamatorias significativas y una regulación positiva difusa o focal de la expresión del complejo mayor de histocompatibilidad de clase I. Los anticuerpos anti-3-hidroxi-3-metilglutaril-coenzima A (anti-HMG-CoA) reductasa representan un rasgo serológico característico de la SINAM.Caso clínico: Presentamos a un paciente que desarrolló debilidad muscular progresiva después de tomar simvastatina durante los últimos siete años. En la presentación inicial, su nivel de creatincinasa fue de 2.954 U/L y los anticuerpos anti-HMG-CoA reductasa fueron positivos. La biopsia mostró rasgos miopáticos profundos con numerosas fibras necróticas, algunas fibras en regeneración e infiltrado de células inflamatorias perimisial, combinado con una sobreexpresión difusa del complejo mayor de histocompatibilidad de clase I. Se le diagnosticó SINAM, se suspendió la estatina y se inició una dosis alta de corticoides sistémicos, inmunoglobulina intravenosa y metotrexato. Después de tres meses de seguimiento, tuvo una mejora significativa en la fuerza muscular y el nivel de creatincinasa volvió a la normalidad.(AU)

Introduction: Statins are some of the most widely prescribed medications. Although statins are generally well tolerated, they can lead to musculoskeletal side effects. Statin-induced necrotizing autoimmune myositis (SINAM) is a rare condition and the prevalence is only 1 per 100,000 people. This disorder is characterized by progressive and severe symmetric muscle weakness, marked elevation of creatine kinase and persistent symptoms despite statin discontinuation. Electromyography commonly shows a nonspecific irritable myopathy pattern indistinguishable from other inflammatory myopathies. Muscle biopsy shows the presence of necrotic fibers, regenerating fibers without significant inflammatory cells and diffuse or focal upregulation of major histocompatibility complex class I expression. The anti-3-hydroxy-3-methylglutaryl-coenzyme A reductase (anti-HMGCR) antibodies represent a characteristic serological feature of SINAM. Case report: We present a patient who developed progressive muscle weakness after taking simvastatin for the last seven years. At initial presentation, her creatine kinase level was 2,954 U/L and anti-HMGCR antibodies were positive. The biopsy showed a profound myopathic features with numerous necrotic fibers, some regenerating fibers and perimysial inflammatory cell infiltrate, combined with a diffuse overexpression of major histocompatibility complex class I products. She was diagnosed with SINAM, statin was suspended and a high dose of systemic corticosteroids, intravenous immunoglobulin therapy and methotrexate was started. At three-month follow-up, she had significant improvement in muscle strength and creatine kinase level returned to normal...(AU)

¿Puede el diseño del catéter ureteral reducir la sintomatología de los pacientes? Estudio controlado, aleatorizado y simple ciego, que compara el catéter ureteral de superficie lisa con el catéter ureteral de diseño acanalad / Can ureteral stents with a different format reduce patients’ symptomatology? A single-blinded, randomized, controlled study comparing smooth-walled and grooved ureteral stents

Introducción: Los verdaderos beneficios de la colocación perioperatoria de un catéter doble J (CDJ) están siendo ampliamente estudiados debido a sus conocidos efectos secundarios. Sin embargo, todavía no se ha llegado a un consenso en la literatura sobre el diseño óptimo del catéter. Por este motivo, este estudio prospectivo, aleatorizado y simple ciego, tuvo como objetivo comparar la sintomatología asociada a 2 diseños de catéter: el de superficie lisa y el de diseño acanalado.Materiales y métodosEl estudio recogió prospectivamente los datos de 42 pacientes que se sometieron a la colocación de un CDJ entre julio de 2019 y agosto de 2020. Los pacientes se dividieron aleatoriamente en 2 grupos según el diseño del catéter utilizado: en el primer grupo se utilizó el catéter de superficie lisa (control) y en el segundo, el catéter de diseño acanalado (intervención). Después de la cirugía, todos los pacientes completaron el Cuestionario de Síntomas del Catéter Ureteral validado en portugués en 3 momentos del postoperatorio (días 7 y 30 después del procedimiento quirúrgico, y día 30 después de la retirada del catéter).Resultados: No se encontraron diferencias significativas en cuanto al sexo, la edad, la mediana de índice de masa corporal, la lateralidad, el tipo de procedimiento quirúrgico (ureteroscopia flexible, semirrígida o mixta). Los CDJ de superficie lisa se asociaron a una mayor incidencia de dolor en el flanco (52,38 vs. 10%; p=0,006) y de dolor suprapúbico (57,14 vs. 30%; p=0,04) el día 7 después del procedimiento. La regresión lineal mixta mostró, de forma significativa, menos dolor en el flanco (p<0,001) y suprapúbico (p<0,01), y un rendimiento sexual significativamente mejor en el grupo de intervención (p=0,03).ConclusionesLos CDJ con diseño acanalado se asocian a una menor incidencia de dolor en el flanco y suprapúbico, y tienen un impacto menor en el rendimiento sexual de los pacientes. (AU)

Introduction: The true benefits of perioperative JJ stent placement are being widely studied due to its known side effects. However, no consensus has been reached in the literature regarding the best type of stent. This prospective, randomized, single-blinded study therefore aimed to compare the symptomatology associated with two JJ stent designs: smooth-walled and grooved.Materials and methodsThe study prospectively recruited 42 patients who underwent JJ stent placement between July 2019 and August 2020. The patients were randomly divided into two groups according to the JJ stent design used: the smooth-walled stent (control) and grooved stent (intervention) groups. After surgery, all patients completed the Portuguese-validated Ureteral Stent Symptom Questionnaire at three timepoints (days 7 and 30 post-surgical procedure, and day 30 post-stent removal).Results: No significant differences in gender, age, median body mass index, laterality, type of surgical procedure (flexible, semi-rigid or mixed ureteroscopy) were found. Smooth-walled JJ stents were associated with a higher incidence of flank pain (52.38% vs. 10%, P=.006) and suprapubic pain (57.14% vs. 30%, P=.04) on the 7th. post-procedure day. Linear mixed regression showed significantly lower flank (P<.001) and suprapubic pain (P<.01), and significantly better sexual performance in the intervention group (P=.03).ConclusionsUreteral stent with a grooved format are associated with a lower incidence of flank and suprapubic pain and had less impact on the sexual performance of patients. (AU)

Eficacia de un plan de acogida teórico-práctico dirigido a profesionales de enfermería de nueva incorporación en una Unidad de Cuidados Intensivos Pediátrica: estudio piloto / Efficacy of a theoretical and practical programme to newly hired nursing personnel in a Paediatric Intensive Care Unit: a pilot study

Objetivos: Diseñar un plan formativo de acogida a enfermeras/os de nueva incorporación y 2) determinar la autopercepción y el estrés percibido antes y después de la realización de la parte teórica y práctica con simulación de alta fidelidad. Método: Se llevó a cabo un estudio piloto de diseño cuasiexperimental tipo pretest-postest sin grupo control en una Unidad de Cuidados Intensivos Pediátricos (UCIP), de octubre de 2018 a abril de 2019. En primer lugar, se diseñó un plan formativo teórico y práctico que se impartió a todo el personal de nueva incorporación de la unidad. Posteriormente, se evaluó la autopercepción personal, el estrés percibido y el grado de satisfacción mediante dos escalas tipo Likert. Resultados: Participaron en el estudio un total de 20 enfermeras/os de nueva incorporación, el 90% (n = 18) eran del sexo femenino, con una edad media de 25,5 ± 4,53 años. Al comparar los datos obtenidos pre y post formación teórica con relación a la autopercepción personal se constató un aumento de puntuación en todos los ítems. A la vez, se objetivaron puntuaciones medias menores de estrés (6,9 ± 1,57 vs. los 5,6 ± 1,79). En la parte práctica se obtuvo también un aumento de las puntuaciones, así como una tendencia a la disminución de las puntuaciones medias globales de estrés percibido (6,4 ± 1,73 vs. 5,6 ± 1,93). Conclusiones: Un plan de acogida teórico-práctico mediante simulación clínica (SC) impartido a enfermeras/os de nueva incorporación de una UCIP mejoró su autopercepción sobre el nivel de conocimientos y disminuyó las puntuaciones medias de estrés.(AU)

Aims: to design a training programme for newly hired nursing personnel and (2) to determine self-perception and perceived stress before and after the theoretical and practical parts of the programme with high fidelity simulation activities. Methods: A pilot quasi-experimental pretest-posttest study without control group conducted in a Paediatric Intensive Care Unit from October 2018 to April 2019 was conducted. A newly hired nursing personnel training programme was first designed and delivered. Later, the participants’ self-perception was assessed, as well as their perceived stress and grade of satisfaction using two different Likert scales. Results: A total of 20 newly hired nurses participated in the study, 90% (n = 18) were female with a median age of 25.5 ± 4.53 years. Higher scores were obtained in participants’ self-perception before and after the theoretical training. Lower significant median scores of the participants’ stress perception were found (6.9 ± 1.57 versus 5.6 ± 1.79). In the practical part of the programme, we obtained higher scores in all items, as well as lower median scores in stress perception (6.4 ± 1.73 versus 5.6 ± 1.93). Conclusions: A theoretical and practical programme for newly hired nursing personnel in a Paediatric Intensive Care Unit improved participants’ self-perception and reduced their perceived median scores in stress levels.(AU)

Analysis of Trifecta Results in a Single-Center Experience with Retroperitoneoscopic Partial Nephrectomy: An Observational Study

Objective: To analyze the trifecta results in patients with T1a and T1b renal tumors treated with retroperitoneoscopic partial nephrectomy (RPN). Material and Methods: A cross-sectional prospective observational study was conducted on 106 patients with cT1 renal tumor submitted to RPN. Trifecta was reported as no ≥ 2 Clavien-Dindo complications, warm ischemia time (WIT) ≤ 25 minutes, ≤ 15% postoperative ΔGFR, and nonpositive margins. Results: The mean age was 58 years (SD ± 12). The median (Q1; Q3) tumor size was 3.5 (2.2; 4.5) cm. Of the treated patients, 33% had a ventral tumor. R.E.N.A.L nephrometry score was low complexity in 54% of cases and high complexity in 4%. WIT median (Q1; Q3) was 20 (14; 23) minutes. Estimated blood loss median (Q1; Q3) was 50 (0; 100) ml. There were no conversions to open surgery. ΔGFR was >15% in 17.5% of patients. There were no postoperative complications in 84% of cases. Nonpositive margins were observed. Sixty-eight percent were pT1a and 32% were pT1b. Seventy-two percent of patients presented trifecta. A statistically significant difference was found between trifecta and tumor size (3 cm vs. 4.4 cm; p<0.001), complexity (low complexity 90% vs. intermediate complexity 56%; p<0.0001), and pT (T1a 81% vs. T1b 53%; p<0.003). Conclusion: RPN is a safe and effective treatment modality for T1a and T1b renal tumors. Trifecta rate was 72%. Tumor size, tumor complexity, and pT were found to be an associated factor for trifecta (AU)

Objetivo: Analizar los resultados trifecta en pacientescon tumores renales T1a y T1b tratados con nefrectomíaparcial retroperitoneoscópica (NPR).Material y Métodos: Se realizó un estudio observacional prospectivo de corte transversal en 106 pacientescon tumor renal cT1 sometidos a NPR. Se informó Trifectacomo no complicaciones de Clavien-Dindo ≥ 2, tiempo deisquemia caliente (WIT) ≤ 25 minutos, ∆GFR posoperatoria ≤ 15 % y márgenes quirúrgicos negativos.Resultados: La edad media fue de 58 años (DE ± 12).La mediana (Q1; Q3) del tamaño del tumor fue de 3,5 (2,2;4,5) cm. De los pacientes tratados, el 33% tenía un tumorventral. El puntaje de nefrometría R.E.N.A.L fue de bajacomplejidad en el 54% de los casos y de alta complejidaden el 4%. La mediana de WIT (Q1; Q3) fue de 20 (14; 23)minutos. La mediana de pérdida de sangre estimada (Q1;Q3) fue de 50 (0; 100) ml. No hubo conversiones a cirugíaabierta. ∆GFR fue >15 % en el 17,5 % de los pacientes.No hubo complicaciones postoperatorias en el 84% de loscasos. No hubo márgenes quirúrgicos positivos. El 68 %de los tumores eran pT1a y el 32 % eran pT1b. El 72% delos pacientes tuvo trifecta. Se encontró una diferencia estadísticamente significativa entre trifecta y tamaño tumoral(3 cm contra 4,4 cm; p˂0,001), complejidad (90% baja contra 56% intermedia; p˂0,0001) y pT (81% T1a contra 53%T1b; p˂0,003).Conclusión: La NPR es una modalidad de tratamientosegura y eficaz para los tumores renales T1a y T1b. La tasatrifecta fue del 72% y se encontró que el tamaño del tumor,la complejidad del tumor y el pT eran factores asociados con trifecta (AU)

A organização da Enfermagem durante a epidemia de febre amarela em Alagoas, Brasil (1849-1889) / Organización de enfermería durante la epidemia de fiebre amarilla en Alagoas, Brasil (1849-1889) / Nursing organization during the yellow fever epidemic in Alagoas, Brazil (1849-1889)

Com a chegada da epidemia de febre amarela em Alagoas a partir de meados do século XIX houve um movimento em torno da enfermagem. Esse problema de saúde pública mobilizou o Estado para a inserção de enfermeiros e práticos em enfermagem, estes eram indivíduos que realizavam cuidados de enfermagem de forma empírica, mas que contribuíram para a organização da enfermagem alagoana, ainda que em período pré-profissional [Fragmento de texto ](AU)

Determinantes primários da migração de alagoanas para Escolas de Enfermagem no Rio de Janeiro (1930-1960) / Principales determinantes de la migración de mujeres de Alagoas a las Escuelas de Enfermería de Río de Janeiro (1930-1960) / Primary determinants of migration of women from Alagoas to Nursing Schools in Rio de Janeiro (1930-1960)

A Enfermagem Moderna no Brasil, no seu devir histórico de consolidação enquanto carreira profissional para a mulher brasileira, manteve uma estreita relação entre a migração de mulheres nordestinas e a formação de seus quadros de enfermeiras diplomadas. Na transição de uma economia agrário-exportadora para uma economia urbano-industrial, na década de 1930, surgiu um sistema de assistência à saúde e, de modo geral, um sistema típico de proteção social no Brasil, culminando com modificações operadas pelo regime varguista (1930-1945), às quais marcaram de forma profunda e longeva o campo da saúde pública no Brasil, dentre estas foi a institucionalização e profissionalização da Enfermagem por parte do Estado [Fragmento de texto] (AU)

A formação em Enfermagem para mulheres brasileiras no pós-1930: uma revisão histórica / La formación en enfermería de mujeres brasileñas en la década de 1930: una revisión histórica / Professionalization in Nursing for Brazilian women in the post-1930s: historical notes

O século XX possui marcas importantes para se pensar as transformações que diversos extratos sociais sofreram, no Brasil, em especial as mulheres. Tais como os processos de urbanização, imigração e industrialização do país, e sua consequente absorção do trabalho feminino, como também a necessidade de incorporação das mulheres nos quadros militares de apoio durante a Segunda Guerra Mundial, a feminização do magistério e o enfrentamento a Estados repressores como os instalados no Estado Novo e na Ditadura Militar [Fragmento de texto] (AU)

Os primeiros passos para a institucionalização da loucura em Alagoas na segunda meta de do século XIX ao estabelecimento do Asylo Santa Leopoldina: inserção de enfermeiros e tratamento / Los primeros pasos hacia la institucionalización de la locura en Alagoas en la segunda mitad del siglo XIX hasta la instauración del Asilo Santa Leopoldina: inserción de enfermeras y tratamiento / The first steps towards the institutionalization of madness in Alagoas in the second half of the 19th century to the establishment of Asylo Santa Leopoldina: insertion of nurses and treatment

A partir de 1850 Alagoas começou a discutir sobre as primeiras medidas sanitárias para conter as epidemias no estado. Foi nesse contexto que a comissão de higiene pública passou a propor medidas sanitárias coletivas e/ou individuais, como a limpeza das ruas e pântanos, orientações à população, controle na criação de porcos, construção do hospital de caridade, cemitério público de Maceió, lazareto do porto do Francês, abertura de enfermarias provisórias e adaptações à cadeia pública, este último abrigando o primeiro local para os alienados no Estado [Fragmento de texto] (AU)

Carangoides bartholomaei (Cuvier, 1833) stomach: a source of aspartic proteases for industrial and biotechnological applications / Estômago de Carangoides bartholomaei (Cuvier, 1833): uma fonte de proteases aspárticas para aplicações industriais e biotecnológicas

The viscera and other residues from fish processing are commonly discarded by the fishing industry. These byproducts can be a source of digestive enzymes with industrial and biotechnological potential. In this study, we aimed at the extraction, characterization, and application of acidic proteases from the stomach of Carangoides bartholomaei (Cuvier, 1833). A crude extract from the stomachs was obtained and submitted to a partial purification process by salting-out, which obtained a Purified Extract (PE) with a specific proteolytic activity of 54.0 U·mg-1. A purification of 1.9 fold and a yield of 41% were obtained. The PE presents two isoforms of acidic proteases and a maximum proteolytic activity at 45 °C and pH 2.0. The PE acidic proteolytic activity was stable in the pH range of 1.5 to 7.0 and temperature from 25 °C to 50 °C. Purified Extract kept 35% of its proteolytic activity at the presence of NaCl 15% (m/v) but was totally inhibited by pepstatin A. Purified Extract aspartic proteases presented high activity in the presence of heavy metals such as Cd2+, Hg2+, Pb2+, Al3+, and Cu2+. The utilization of PE as an enzymatic addictive in the collagen extraction from Nile tilapia scales has doubled the process yield. The results indicate the potential of these aspartic proteases for industrial and biotechnological applications.

As vísceras e outros resíduos do processamento de peixes são geralmente descartados pela indústria pesqueira. Esses resíduos podem ser uma fonte de enzimas digestivas com potencial industrial e biotecnológico. Neste estudo, objetivamos a extração, caracterização e aplicação de proteases aspárticas do estômago de Carangoides bartholomaei (Cuvier, 1833). Um extrato bruto do estômago foi obtido e submetido a um processo de purificação parcial, que obteve um Extrato Purificado (EP) com uma atividade proteolítica específica de 54,0 U·mg-1. Foi obtida uma purificação de 1,9 vezes e um rendimento de 41%. O EP apresenta duas isoformas de proteases ácidas e atividade proteolítica máxima a 45 °C e pH 2,0. A atividade proteolítica do EP foi estável na faixa de pH de 1,5 a 7,0 e temperatura de 25 °C a 50 °C. O EP manteve 35% de sua atividade proteolítica na presença de NaCl a 15% (m/v), mas foi totalmente inibida pela pepstatina A. As proteases ácidas do EP apresentaram alta atividade na presença de metais pesados como o Cd2+, Hg2+, Pb2+, Al3+ e Cu2+. A utilização de EP como aditivo enzimático na extração de colágeno a partir de escamas de tilápia do Nilo dobrou o rendimento do processo. Os resultados indicam um potencial dessas proteases para aplicações industriais e biotecnológicas.

Obtainment and characterization of digestive aspartic proteases from the fish Caranx hippos (Linnaeus, 1766) / Obtenção e caracterização de proteases aspárticas digestórias do peixe Caranx hippos (Linnaeus, 1766)

This work aimed to obtain aspartic proteases of industrial and biotechnological interest from the stomach of the crevalle jack fish (Caranx hippos). In order to do so, a crude extract (CE) of the stomach was obtained and subjected to a partial purification by salting-out, which resulted in the enzyme extract (EE) obtainment. EE proteases were characterized physicochemically and by means of zymogram. In addition, the effect of chemical agents on their activity was also assessed. By means of salting-out it was possible to obtain a purification of 1.6 times with a yield of 49.4%. Two acid proteases present in the EE were observed in zymogram. The optimum temperature and thermal stability for EE acidic proteases were 55 ºC and 45 °C, respectively. The optimum pH and pH stability found for these enzymes were pH 1.5 and 7.0, respectively. Total inhibition of EE acid proteolytic activity was observed in the presence of pepstatin A. dithiothreitol (DTT) and Ca2+ did not promote a significant effect on enzyme activity. In the presence of heavy metals, such as Al3+, Cd2+ and Hg2+, EE acidic proteases showed more than 70% of their enzymatic activity. The results show that it is possible to obtain, from the stomach of C. hippos, aspartic proteases with high proteolytic activity and characteristics that demonstrate potential for industrial and biotechnological applications.

Este trabalho objetivou obter proteases aspárticas de interesse industrial e biotecnológico a partir do estômago do peixe xaréu (Caranx hippos). Para isso, foi obtido um extrato bruto do estômago, o qual foi submetido a uma purificação parcial por salting-out onde se obteve o extrato enzimático (EE). As proteases do EE foram caracterizadas físico-quimicamente e através de zimograma. Além disso, o efeito de agentes químicos sobre sua atividade também foi avaliado. Através de salting-out foi possível obter uma purificação de 1,6 vezes com rendimento de 49,4%. Foram observadas duas proteases ácidas presentes no EE através de zimograma. A temperatura ótima e a estabilidade térmica para as proteases ácidas do EE foram de 55 ºC e 45 °C, respectivamente. O pH ótimo e a estabilidade ao pH encontrados para estas enzimas foram o pH 1,5 e 7,0, respectivamente. Observou-se a inibição total da atividade proteolítica ácida do EE na presença de pepstatina A. O ditiotreitol (DTT) e o Ca2+ não promoveram efeito significativo na atividade enzimática. Na presença de metais pesados, como Al3+, Cd2+ e Hg2+, o EE manteve mais de 70% de atividade enzimática do EE. Os resultados mostram que é possível obter, a partir do estômago de C. hippos, proteases aspárticas com alta atividade proteolítica e características que demonstram potencial para aplicações industriais e biotecnológicas.

Obtainment and characterization of digestive aspartic proteases from the fish Caranx hippos (Linnaeus, 1766) / Obtenção e caracterização de proteases aspárticas digestórias do peixe Caranx hippos (Linnaeus, 1766)

This work aimed to obtain aspartic proteases of industrial and biotechnological interest from the stomach of the crevalle jack fish (Caranx hippos). In order to do so, a crude extract (CE) of the stomach was obtained and subjected to a partial purification by salting-out, which resulted in the enzyme extract (EE) obtainment. EE proteases were characterized physicochemically and by means of zymogram. In addition, the effect of chemical agents on their activity was also assessed. By means of salting-out it was possible to obtain a purification of 1.6 times with a yield of 49.4%. Two acid proteases present in the EE were observed in zymogram. The optimum temperature and thermal stability for EE acidic proteases were 55 ºC and 45 °C, respectively. The optimum pH and pH stability found for these enzymes were pH 1.5 and 7.0, respectively. Total inhibition of EE acid proteolytic activity was observed in the presence of pepstatin A. dithiothreitol (DTT) and Ca2+ did not promote a significant effect on enzyme activity. In the presence of heavy metals, such as Al3+, Cd2+ and Hg2+, EE acidic proteases showed more than 70% of their enzymatic activity. The results show that it is possible to obtain, from the stomach of C. hippos, aspartic proteases with high proteolytic activity and characteristics that demonstrate potential for industrial and biotechnological applications.

Este trabalho objetivou obter proteases aspárticas de interesse industrial e biotecnológico a partir do estômago do peixe xaréu (Caranx hippos). Para isso, foi obtido um extrato bruto do estômago, o qual foi submetido a uma purificação parcial por salting-out onde se obteve o extrato enzimático (EE). As proteases do EE foram caracterizadas físico-quimicamente e através de zimograma. Além disso, o efeito de agentes químicos sobre sua atividade também foi avaliado. Através de salting-out foi possível obter uma purificação de 1,6 vezes com rendimento de 49,4%. Foram observadas duas proteases ácidas presentes no EE através de zimograma. A temperatura ótima e a estabilidade térmica para as proteases ácidas do EE foram de 55 ºC e 45 °C, respectivamente. O pH ótimo e a estabilidade ao pH encontrados para estas enzimas foram o pH 1,5 e 7,0, respectivamente. Observou-se a inibição total da atividade proteolítica ácida do EE na presença de pepstatina A. O ditiotreitol (DTT) e o Ca2+ não promoveram efeito significativo na atividade enzimática. Na presença de metais pesados, como Al3+, Cd2+ e Hg2+, o EE manteve mais de 70% de atividade enzimática do EE. Os resultados mostram que é possível obter, a partir do estômago de C. hippos, proteases aspárticas com alta atividade proteolítica e características que demonstram potencial para aplicações industriais e biotecnológicas.