Clinical and epidemiological features of mpox in a Brazilian reference center for HIV and sexually transmitted infections: A cross-sectional study.

Background: The 2022 mpox outbreak has affected disproportionately people living with HIV (PLWH) and pre-exposure prophylaxis (PrEP) users. Methods: We conducted a cross-sectional study to evaluate factors associated with laboratory diagnosis of mpox among suspected cases, and access differences between PrEP users and PLWH with confirmed diagnostic. Results: 394 mpox suspected cases were analyzed, 309 (78.4%) confirmed. Most patients with mpox were PLWH (54.4%) and 99 (32%) PrEP users. Mpox cases were likely to be between 25 and 39 years old (aOR=2.8; p=0.042), men who have sex with men/bisexual or transgender women (aOR=17.2; p< 0.001) and to have fever (aOR=4.7; p< 0.001), adenomegaly (aOR=7.2; p< 0.001) and multiple vesicular lesions (aOR=4.2; p< 0.001). Comparing PrEP users to PLWH with confirmed mpox, PrEP users had lesions predominantly with exclusive genital involvement (p=0.016); while PLWH had higher extragenital involvement (p=0.018). Conclusions: PrEP users and PLWHA were the main epidemiological groups in our cohort. Recognizing the differences between vulnerable populations can contribute to the development public policies to control mpox in settings with reduced access to vaccines.

Seropositivity to Cysticercosis in School-Age Children Living in a Low-Income Municipality in the Midwest Region of Brazil.

Background: Human cysticercosis (CC) is a global public health problem, especially in Latin America, including Brazil. We aimed to analyze the seroprevalence of CC among school-age children and adolescents. Methods: We analyzed the presence of specific IgG antibodies against Taenia solium metacestodes in 500 serum samples from elementary school children and adolescents in Jataí City, state of Goiás, Brazil. IgG antibodies against the antigenic extract of the parasite were detected and analyzed by ELISA, and specific peptides were identified by confirmatory Western Blotting test. Results: Of the 500 study participants, 205 (41%) were male, and 295 (59%) were female. Participants aged between 4 and 18 years (mean age 8.4 years). The percentage of serum samples reactive by ELISA was 37.2%. These samples were analyzed by Western Blotting, which confirmed that the seropositivity rate was 6.2% (95% CI 2.4-14.7) in 31 samples reactive for CC-specific bands, determined in serum samples from 18 male (5-11 years old) and 13 female (4-12 years old) students. Conclusion: The CC seroprevalence demonstrated in schoolchildren suggests that this parasitosis is endemic in the study area. Further investigations are necessary to clarify the local epidemiology of this parasitosis.

IgG4 and IgE anti-Strongyloides stercoralis as additional parameters in characterizing patients with diabetes from a hyperendemic area.

We report the detection of IgG, IgG1, IgG4 and IgE anti-Strongyloides stercoralis as complementary tool for screening in patients with diabetes in hyperendemic areas for strongyloidiasis. A panel of 119 serum samples were analyzed: 76 from patients with DM2 and 43 patients with other endocrine diseases and a positive correlation for total IgG levels with IgG4 (rs = 0.559; P = 0.024; n = 16) and IgG and IgE (rs = 0.585; P < 0.0001; n = 76) was found in the diabetes group.

Acceptability of teleconsultation in a public service specialized in the prevention and care of HIV infection and other sexually transmitted infections / Aceitabilidade da teleconsulta em um serviço público especializado na prevenção e cuidado da infecção pelo HIV e outras infecções sexualmente transmissíveis

Introduction: Telemedicine was leveraged for its contribution to mitigate the impact of COVID-19 in Brazil and worldwide. Objective: We aim to evaluate the acceptability of incorporating teleconsultation through synchronized videoconference by users and professionals in a service specialized in the prevention and treatment of the human immunodeficiency virus and other sexually transmitted infections, and to identify associated factors. Methods: This is a cross-sectional study with 410 users and 57 professionals who answered a category-standardized questionnaire. Predictors of acceptability were assessed using logistic regression model. Results: A total of 364 (88.8%) users said they would accept the modality. The factors positively associated with the odds of acceptance were the self-assessment of having favorable conditions to participate in a teleconsultation (aOR 54.8; 95%CI 12.4­242.1; p<0.001), the perception of saving money (aOR 5.2; 95%CI 1.9­14.0; p=0.001), and perceived convenience of the modality (aOR 6.7; 95%CI 2.9­15.9; p<0.001). Factors associated with reduced odds of acceptance were the fear of not being evaluated well (aOR 0.2; 95%CI 0.1­0.4; p<0.001), or remaining long without seeing the professional (aOR 0.2; 95%CI 0.1­0.5; p<0.001). The acceptance of the modality among professionals was 75.4% and the perception of its convenience (aOR 16.8; 95%CI 2.6­108.4; p=0.003) and that the institution has appropriated conditions (aOR 7.7; 95%CI 1.5­40.6; p=0.016) were associated with increased odds of accepting its incorporation in their routine. Conclusion: Governance should invest in infrastructure and support, secure protocols, digital literacy, and training of its users and employees for video teleconsultation. (AU)

Introdução: A telemedicina foi alavancada por sua contribuição para mitigar o impacto da COVID-19 no Brasil e no mundo. Objetivo: Pretendemos avaliar a aceitabilidade da incorporação da teleconsulta por videoconferência síncrona por usuários e profissionais de um serviço especializado na prevenção e tratamento da infecção pelo vírus da imunodeficiência humana (HIV) e outras infecções sexualmente transmissíveis, bem como identificar fatores associados. Métodos: Estudo transversal com 410 usuários e 57 profissionais, que responderam a um questionário padronizado por categoria. Os preditores de aceitabilidade foram avaliados utilizando-se um modelo de regressão logística. Resultados: O total de 364 (88,8%) usuários disseram que aceitariam a modalidade. Os fatores positivamente associados à probabilidade de aceitação foram a autoavaliação quanto a ter condições favoráveis para participar de uma teleconsulta (razão de chances ajustada ­ aOR 54,8; intervalo de confiança de 95% ­ IC95% 12,4­242,1; p<0,001), a percepção de poupar dinheiro (aOR 5,2; IC95% 1,9­14,0; p=0,001) e a percepção de conveniência da modalidade (aOR 6,7; IC95% 2,9­15,9; p<0,001). As menores probabilidades de aceitação foram o medo de não ser bem avaliado (aOR 0,2; IC95% 0,1­0,4; p<0,001) e de permanecer muito tempo sem ver o profissional (aOR 0,2; IC95% 0,1­0,5; p<0,001). A aceitação da modalidade pelos profissionais foi de 75,4% e a percepção de sua conveniência (aOR 16,8; IC95% 2,6­108,4; p=0,003) e a de que a instituição possui condições favoráveis (aOR 7,7; IC95% 1,5­40,6; p=0,016) foram associadas com a maior probabilidade de aceitar a incorporação da modalidade em sua rotina. Conclusão: A governança deve investir em infraestrutura e apoio, protocolos seguros, literacia digital e treinamento de seus usuários e funcionários para a videoconsulta. (AU)

Contaminação parasitária em hortaliças comercializadas no município de Jataí-GO / Parasitic contamination in vegetables commercialized in the city of Jataí-GO

Introdução: a prevalência de doenças parasitárias transmitidas por alimentos tem apresentado um aumento significativo em nível mundial, destacando principalmente as hortaliças, consumidas in natura, em razão da sociedade moderna que procura hábitos de vida mais saudáveis. Objetivo:avaliar a contaminação de hortaliças comercializadas no município de Jataí, GO, por enteroparasitos. Metodologia: foi realizada uma pesquisa experimental para detecção de estruturas parasitárias em hortaliças de cultivo tradicional e hidropônico, obtidas de nove estabelecimentos: três supermercados, três hortas e três feiras livres. Foram obtidas 54 amostras de alface (Lactuca sativa), 54 de rúcula (Chicarium sp.) e 18 de agrião (Nasturtiumofficinale). As amostras foram lavadas com água destilada e solução Tween 80 e submetidas as técnicas de sedimentação espontânea e por centrifugação. Foi realizado um mapeamento da área de estudo para identificação da localização dos estabelecimentos. Resultados: a positividade para estruturas parasitárias foi de 94,4% (119/126). A alface apresentou maior prevalência de parasitos 96,2% (52/54). Foi observada diferença estatística significativa ao comparar o emprego das duas técnicas (p < 0,05). Ashortaliças submetidas a técnica de sedimentação espontânea apresentaram maior positividade 115/126 (91,3%). Não foi observada diferença estatística significante quanto ao tipo de cultivo, porém, houve forte associação em relação ao local de cultivo e contaminação das hortaliças (OR: 3,625). Verificou-se maior percentual de positividade nos estabelecimentos localizados próximos aos rios. Conclusão: a positividade de enteroparasitos detectada nas hortaliças foi alta, ressaltando a necessidade de implementar medidas que visam a conscientização da população, em relação às práticas de higienização das hortaliças antes do consumo.

Introduction: the prevalence of parasitic diseases transmitted by food has shown a significant increase worldwide, especially vegetables, consumed in natura, due to modern society that seeks healthier lifestyles. Objective: to evaluate the contamination of vegetables commercialized in the city of Jataí, GO, by enteroparasites. Methodology: an experimental research was carried out to detect parasitic structures in vegetables of traditional and hydroponic cultivation, obtained from nine establishments: three supermarkets, three vegetable gardens and three street markets. Fifty four samples of lettuce (Lactuca sativa), 54 of arugula (Chicarium sp.) and 18 of watercress (Nasturtium officinale) were obtained. The samples were washed with distilled water and Tween 80 solution and submitted to spontaneous sedimentation and centrifugation techniques. A mapping of the study area was carried out to identify the location of the establishments. Results: positivity for parasitic structures was 94.4% (119/126). Lettuce had a higher prevalence of parasites 96.2% (52/54). A statistically significant difference was observed when comparing the use of the two techniques (p < 0.05). Vegetables submitted to the spontaneous sedimentation technique showed higher positivity 115/126 (91.3%). There was no statistically significant difference regarding the type of cultivation, however, there was a strong association in relation to the place of cultivation and contamination of vegetables (OR: 3.625). There was a higher percentage of positivity in establishments located near the rivers. Conclusion: the positivity of intestinal parasites detected in vegetables was high, highlighting the need to implement measures aimed at raising awareness of the population regarding the practices of cleaning vegetables before consumption.

Importance of detection of Strongyloides stercoralis DNA in fecal samples from patients with type 2 diabetes mellitus.

OBJECTIVE: The association between diabetes and Strongyloides infection remains controversial. This study aimed to detect Strongyloides stercoralis DNA in the feces of patients with Diabetes Mellitus type 2 (DM2). METHODS: Fecal samples were analyzed via the Lutz, Rugai, and agar plate culture methods. PCR amplification was performed using two targets (PCR-genus and PCR-species) located on the S. stercoralis 18S ribosomal. RESULTS: The positivity for S. stercoralis using parasitological methods was 1.1%. PCR-genus (14.13%) demonstrated a higher positivity than PCR-species (9.78%). CONCLUSION: The results confirm the greater positivity of the molecular diagnosis in relation to parasitological methods, reinforcing its use as an additional tool for the diagnosis of S. stercoralis infection in patients with DM2 living in endemic areas for this helminthiasis.

Comparative topographical description of the central nervous system of the macaw (Ara ararauna) and the owl (Tyto furcata)Comparative Topographical Description of the Central Nervous System of the Macaw (Ara ararauna) and the Owl (Tyto furcata) / Descripción topográfica comparativa del sistema nervioso central del guacamayo (Ara ararauna) y el búho (Tyto furcata)

SUMMARY: The study of animal neurology has historically focused on the closest descendants of humans, such as monkeys and chimpanzees. Because of this, the neurology of birds remains poorly studied and understood by humans compared to other groups of animals. Thus, the objective was to describe the central nervous system to better understand its functioning, correlating the findings with the role it plays in the physiology and biology of birds, comparing species with different behaviors between herbivores and carnivores, filling gaps in the literature serving as subsidy for future research.

RESUMEN: El estudio de la neurología animal se ha centrado históricamente en los descendientes más cercanos de los humanos, como los monos y los chimpancés. Debido a esto, la neurología de las aves sigue siendo poco estudiada y comprendida, en comparación con la de otros grupos de animales. Así, el objetivo fue describir el sistema nervioso central para comprender mejor su funcionamiento, correlacionando los hallazgos con el rol que juega en la fisiología y biología de las aves, comparando especies con diferentes comportamientos entre herbívoros y carnívoros y llenando vacíos en la literatura que sirvan como base para futuras investigaciones.

Comparative Topographical Description of the Central Nervous System of the Macaw (Ara ararauna) and the Owl (Tyto furcata)

SUMMARY: The study of animal neurology has historically focused on the closest descendants of humans, such as monkeys and chimpanzees. Because of this, the neurology of birds remains poorly studied and understood by humans compared to other groups of animals. Thus, the objective was to describe the central nervous system to better understand its functioning, correlating the findings with the role it plays in the physiology and biology of birds, comparing species with different behaviors between herbivores and carnivores, filling gaps in the literature serving as subsidy for future research.

El estudio de la neurología animal se ha centrado históricamente en los descendientes más cercanos de los humanos, como los monos y los chimpancés. Debido a esto, la neurología de las aves sigue siendo poco estudiada y comprendida, en comparación con la de otros grupos de animales. Así, el objetivo fue describir el sistema nervioso central para comprender mejor su funcionamiento, correlacionando los hallazgos con el rol que juega en la fisiología y biología de las aves, comparando especies con diferentes comportamientos entre herbívoros y carnívoros y llenando vacíos en la literatura que sirvan como base para futuras investigaciones.

Importance of detection of Strongyloides stercoralis DNA in fecal samples from patients with type 2 diabetes mellitus

Abstract Objective: The association between diabetes and Strongyloides infection remains controversial. This study aimed to detect Strongyloides stercoralis DNA in the feces of patients with Diabetes Mellitus type 2 (DM2). Methods: Fecal samples were analyzed via the Lutz, Rugai, and agar plate culture methods. PCR amplification was performed using two targets (PCR-genus and PCR-species) located on the S. stercoralis 18S ribosomal. Results: The positivity for S. stercoralis using parasitological methods was 1.1%. PCR-genus (14.13%) demonstrated a higher positivity than PCR-species (9.78%). Conclusion: The results confirm the greater positivity of the molecular diagnosis in relation to parasitological methods, reinforcing its use as an additional tool for the diagnosis of S. stercoralis infection in patients with DM2 living in endemic areas for this helminthiasis. HIGHLIGHTS Positivity for strongyloidiasis in coproscopic exam was low in diabetic patients. PCR is more sensitive for detecting S. stercoralis infection in diabetic patients. Molecular diagnosis is an important tool for the detection of S. stercoralis.

Comparative anatomy of the encephalon of new world primates with emphasis for the Sapajus sp.

Studies about the anatomy of the New World Primates are scarce, mainly comparative neuroanatomy, then a morphological comparative analysis about the tropical Primates were performed and a effort was made for an Old World Primates and modern humans relationship for the obtained data; plus, comments about behavior e and allometry were performed to try link the high cognition and abilities of the Sapajus with the neuroanatomical results, however, despite the deep neuroanatomic data obtained, we do not found an intrinsic relation to explain that.

The importance on the use of active methods when teaching human morphophysiology.

Traditional didactic methods have not been successful in promoting independent and reflective students. Thus new teaching techniques are essential to optimize the way students learn. This study aimed to evaluate the perception of students, from the Faculty of Ceilandia, University of Brasília (FCE/UnB), about the active method "inverted class," which has as its primary characteristic to stimulate the student to study and research the contents before the theoretical classes or explanation of the teacher. To this end, 64 students of the summer course participated in the Flipped Classroom and later evaluated the discipline method. Initially, they received a script with clinical questions about the class's content, which should be discussed and answered about the basic, clinical, and practical application concepts. To evaluate the didactic method applied, on the last day of class, the summer class students were invited to answer a survey about satisfaction when learning the contents. For 98% of the students, the teaching method used was approved. It is also emphasized that this class had 48 repeating students, unmotivated with the course because, for many, they declared themselves unable to be approved. Given the success of the method, we decided to apply it throughout 2018, so the method was applied to over 180 students of FCE/UnB health courses. In short, it is considered that the results presented here to support other studies that highlight the need for changes in traditional teaching methods, which is a didactic option in undergraduate courses.

Blastocystis subtypes in patients with diabetes mellitus from the Midwest region of Brazil.

Blastocystis sp. is an enteric protist commonly found in human fecal samples. In Brazil, few studies have been developed, but none of them has explored the presence of Blastocystis in patients with diabetes mellitus. We evaluated the occurrence and molecular identification of Blastocystis sp. among patients with diabetes mellitus in the Midwest region, Goias State, Brazil. Genomic DNA was obtained from 175 fecal samples (99 from the diabetic group and 76 from the control group). PCR was performed using pan-Blastocystis primers from the SSU-rDNA gene. Microscopic examination revealed positivity of 12.1% and 7.9% for Blastocystis in diabetics and in controls, respectively. Amplification of Blastocystis DNA was observed in 34.4% (34 of 99) and 30.3% (23 of 76) from the diabetic and control groups, respectively. Phylogenetic analyses and BLAST searches revealed six subtypes among Blastocystis isolates in the diabetic group, represented by ST1 (38.2%), ST2 (11.8%), ST3 (35.3%), ST6 (2.9%), ST7 (2.9%) and ST8 (8.8%). In the control group, ST1 (21.8%), ST2 (21.8%), ST3 (43.5%), ST6 (4.4%) and ST8 (8.7%) were identified. This study is the first report regarding the occurrence and subtypes distribution of Blastocystis in patients with diabetes mellitus in Brazil. The results reinforce the potential risk of Blastocystis infection in patients with diabetes, in addition, it contributes to the understanding of the genetic diversity of this enigmatic organism.

Comparative Gross Anatomy of the Forelimb Arteries of the Japanese Monkey (Macaca fuscata) and a Comparative Pattern of Forelimb Arterial Distribution in Primates.

Macaca fuscata displays characteristic behaviours, such as stone handling, locomotor behaviour, gait position, and intermittent bipedalism. Differences in characteristic behaviours among primate species/genera could be explained by anatomical details of the body. However, the anatomical details have not been well studied in Macaca fuscata. Arterial models could be one of the anatomical bases for the phylogenetic and functional differences among species, since the arterial supply could be associated with the muscular performance, especially locomotor behaviour. In this study, five thoracic limbs of Macaca fuscata adults were dissected to analyse the vessels. Patterns of arterial distribution in the thoracic limbs of Macaca fuscata were compared with those in other primates. The results indicated that the arterial distribution in the Japanese monkeys was more similar to those in Macaca mulatta and Papio anubis, which is consistent with phylogenetic similarities. However, compared with Papio anubis and other macaques, there were anatomical differences in several points, including (1) the origin of the common, anterior, posterior circumflex, and profunda brachii, and (2) the origins of the collateralis ulnaris artery. The comparative anatomy of the arteries in the forelimb of Macaca fuscata, along with the anatomical studies in other primates, indicated characteristic patterns of brachial artery division and the number of the palmar arches in primates, which is consistent with the phylogenetic division among New World primates, Old World primates, and apes.

Open access publishers: The new players.

The essential role of journals as registries of scientific activity in all areas of knowledge justifies concern about their ownership and type of access. The purpose of this research is to analyze the main characteristics of publishers with journals that have received the DOAJ Seal. The specific objectives are a) to identify publishers and journals registered with the DOAJ Seal; b) to characterize those publishers; and c) to analyze their article processing fees. The research method involved the use of the DOAJ database, the Seal option and the following indicators: publisher, title, country, number of articles, knowledge area, article processing charges in USD, time for publication in weeks, and year of indexing in DOAJ. The results reveal a fast-rising oligopoly, dominated by Springer with 35% of the titles and PLOS with more than 20% of the articles. We've identified three models of expansion: a) a few titles with hundreds of articles; b) a high number of titles with a mix of big and small journals; and c) a high number of titles with medium-size journals. We identify a high number of titles without APCs (27%) in all areas while medicine was found to be the most expensive area. Commercial publishers clearly exercise control over the scope of journals and the creation of new titles, according to the interests of their companies, which are not necessarily the same as those of the scientific community or of society in general.

A importância da informação científica na educação para a prevenção de doenças infecciosas virais / The importance of scientific information in education for the prevention of viral infectocontagious diseases / La importancia de la información científica en la educación para la prevención de enfermedades infecciosas virales

Objetivo: orientar alunos do ensino fundamental e médio do CED07-Ceilândia / DF sobre a importância das práticas de higiene em prol da prevenção de doenças infecciosas. Método: o estudo foi desenhado em três fases distintas: aplicação de questionários de higiene pessoal; palestras e workshops práticos sobre patologias humanas; e avaliação do projeto pelos alunos participantes. Resultados: Os resultados mostram que 57% dos alunos compartilham objetos pessoais, um número muito elevado, uma vez que a literatura aponta que existem várias patologias que podem ser adquiridas de objetos individuais. Observou-se também que os alunos não têm o hábito de tirar os sapatos antes de entrar em suas casas. Eles alegaram desconhecer os riscos de contaminação por esse comportamento, mas afirmaram que, após as informações fornecidas pelo projeto, estariam mais atentos a esse fator de contaminação domiciliar. Assim, acredita-se que as práticas educativas e informativas sobre o tema proposto foram relevantes, uma vez que os alunos relataram que aprenderam com as atividades desenvolvidas e estavam dispostos a mudar seu comportamento em relação às práticas de higiene. Conclusão: O estudo também demonstra que tais práticas contribuem para a prevenção de doenças por meio de medidas simples, como a melhoria da higiene pessoal, essencial para a saúde pública, uma vez que muitas doenças graves podem ter reduzido o índice de contaminação apenas com orientações educativas. e práticas de higiene corretas.

Objective: to guide students of elementary and high-school levels at CED07-Ceilândia/DF on the importance of hygiene practices in favor of preventing against infectious diseases. Method: the study was designed in three distinct phases: application of questionnaires about personal hygiene; lectures and practical workshops on human pathologies; and evaluation of the project by participating students. Results: The results show that 57% of the students share personal items, a considerably high number since the literature points out that there are several pathologies that can be acquired using individual objects. It was also noted that students are not in the habit of removing their shoes before entering their homes. They claimed that they were unaware of the risks of contamination through this behavior, but stated that, after the information provided by the project, they would be more attentive to this home contamination factor. Thus, it is believed that the educational and informational practices on the proposed theme were relevant, as students reported that they learned from the developed activities and were willing to change their behavior regarding hygiene practices. Conclusion: The study also demonstrates that such practices contribute to disease prevention through simple measures, such as better personal hygiene, which is essential for public health, since many serious diseases can have reduced contamination rate only with educational guidelines and correct hygiene practices.

Objetivo: orientar a los estudiantes de primaria y secundaria del CED07-Ceilândia / DF sobre la importancia de las prácticas de higiene a favor de la prevención de enfermedades infecciosas. Método: el estudio se diseñó en tres fases diferenciadas: aplicación de cuestionarios de higiene personal; conferencias y talleres prácticos sobre patologías humanas; y evaluación del proyecto por parte de los estudiantes participantes. Resultados: Los resultados muestran que el 57% de los estudiantes comparten objetos personales, un número muy alto, ya que la literatura señala que existen varias patologías que se pueden adquirir a partir de objetos individuales. También se observó que los estudiantes no tienen la costumbre de quitarse los zapatos antes de ingresar a sus hogares. Afirmaron desconocer los riesgos de contaminación por este comportamiento, pero manifestaron que, luego de la información brindada por el proyecto, estarían más atentos a este factor de contaminación domiciliaria. Así, se cree que las prácticas educativas e informativas sobre el tema propuesto fueron relevantes, ya que los estudiantes informaron que aprendieron de las actividades desarrolladas y estaban dispuestos a cambiar su comportamiento en relación a las prácticas de higiene. Conclusión: El estudio también demuestra que dichas prácticas contribuyen a la prevención de enfermedades a través de medidas simples, como la mejora de la higiene personal, fundamental para la salud pública, ya que muchas enfermedades graves pueden haber reducido la tasa de contaminación solo con pautas educativas. y prácticas de higiene correctas.

In vitro ovicidal and larvicidal activity of Carica papaya seed hexane extract against Strongyloides venezuelensis.

Strongyloidiasis is a human parasitic disease caused by the helminth Strongyloides stercoralis whose treatment is particularly difficult in immunosuppressed patients due to their low responsiveness to conventional therapy. Carica papaya and its isolated compounds benzyl isothiocyanate, carpaine and carpasemine are promising compound for the treatment of Strongyloides infections due to their anthelmintic action. This study aims to examine the in vitro ovicidal and larvicidal activity of C. papaya seed hexane extract against Strongyloides venezuelensis, using egg hatching tests and larval motility tests as efficiency markers. The crude extract at the concentrations of 566 - 0.0566 mg/mL or the control with albendazole (0.025 mg/mL) and negative controls (water and PBS) were incubated with an equal volume of egg suspension (± 50 specimens) followed by counting of the specimens after 48 h. The same extract and dilutions were added to L3 larvae suspensions (±50 specimens) followed by analysis of larvae viability after 24, 48, and 72 h. The extract inhibited egg hatching with high efficiency at concentrations of 56.6 mg/mL (95.74%) and 5.66 mg/mL (92.16%). At the concentrations of 566 mg/mL (100%) and 56.66 mg/mL (97.32%), the extract inhibited larval motility as effectively as ivermectin (0.316 mg/mL; 100%), and more effectively than the other dilutions and the negative controls. The larvicidal effect depended on the extract concentration, but not on the treatment period. Therefore, C. papaya seed hexane extract has anthelmintic potential against S. venezuelensis and is a promising compound for the development of phytotherapies to treat strongyloidiasis.

Continuous Use of Combined Hormonal Contraceptive and the Effect on Blood Coagulation Factors in Female Capuchin Monkeys (Sapajus libidinosus).

This study aimed at evaluating the availability of the primate Sapajus libidinosus as an animal model for research assessing the physiological effects of the continuous use of combined hormonal contraceptives. In order to do this, six reproductively active female S. libidinosus from the Primate Research Center of the University of Brasília were selected to take part in this experiment. Every 21 days or so, each female received a single dose of combined hormonal contraceptive (algestone acetophenide and 17-enanthate estradiol) in a total of five doses throughout the experiment. The physiological parameters were accessed by means of 13 blood samples from each female, whereas three were gathered during the baseline and 10 samples were collected during the treatment phase. The results showed that the contraceptive use provoked changes in hematological coagulation factors such as an increase in the amount of platelets (p = 0.039) and a reduction in both prothrombin (p < 0.001) and thromboplastin coagulation time (p < 0.001). These results are similar to what has been observed in human patients; thus, it is concluded that S. libidinosus can be successfully used in studies about the physiological impact of hormonal contraceptives.

Inducible nitric oxide synthase controls experimental Strongyloides infection.

Infection with Strongyloides sp. induces a host immune response, predominantly the Th2 type, that is able to eliminate the parasite. However, little is known about the role of the nitric oxide (NO) mediator, induced by the enzyme nitric oxide synthase (NOS), in strongyloidiasis. Therefore, in this study, we investigated the immune response of mice genetically deficient in the enzyme inducible nitric oxide synthase (iNOS-/- ), infected with Strongyloides venezuelensis. C57BL/6 wild-type (WT) and iNOS-/- mice were individually inoculated by subcutaneous injection of 3000 S. venezuelensis L3 larvae. In the absence of iNOS, mice were more susceptible to the infection than WT animals, in which the parasite was completely eliminated. The overall production of cytokines and specific IgG, IgG1 or IgE antibodies against the parasite was significantly lowered in infected iNOS-/- mice. The expression of iNOS was observed in the intestine of WT hosts but mainly in the wall of the parasite, despite the presence of iNOS in mice. Altogether, we concluded that iNOS expression may play an important role in the control of S. venezuelensis infection.

Opportunistic and non-opportunistic intestinal parasites in HIV/ AIDS patients in relation to their clinical and epidemiological status in a specialized medical service in Goiás, Brazil.

Patients infected with the Human Immunodeficiency Virus (HIV) often have opportunistic infections, among which strongyloidiasis and coccidiosis are the most common parasitic infections that aggravate their health status. This study examined the prevalence of intestinal parasites, particularly of Strongyloides stercoralis and intestinal coccidia in patients with the Human Immunodeficiency Virus (HIV)/ Acquired Immunodeficiency Syndrome (AIDS) who were treated at the Specialized Assistance Service (SAE) of Jataí, State of Goiás, Brazil, and analyzed its correlation with clinical, laboratory, and socio-epidemiological parameters. A total of 270 stool samples were analyzed by the Lutz technique, Rugai's method, Agar Plate Culture, Ritchie's method and specific staining, Ziehl-Neelsen modified technique, Kinyoun's method and the rapid safranin method. The prevalence of intestinal parasites was 28.88% including 3.8% of S. stercoralis, Cryptosporidium sp. and Cystoisospora belli. There was a significant positive correlation between intestinal parasites and the clinical status and the use of antiretroviral therapy (ART), smoking, CD4+ lymphocyte counts and sexual orientation. In conclusion, the widespread use of antiretroviral therapy and health assistance contributed to the low prevalence of S. stercoralis and coccidiosis in patients with HIV/ AIDS who were followed up at the SAE.