Resumen (Objetivo) Plasmodium vivax infecta ampliamente a muchas personas en algunas regiones. La singularidad de formar una etapa latente hace que la malaria vivax pueda ser inducida por una recaída por una infección adicional. En el presente estudio, utilizamos un enfoque de simulación dinámica y acoplamiento molecular ara predecir la posibilidad de que compuestos bioactivos de la familia de plantas Zingiberaceae sean candidatos a fármaco contra la malaria dirigiéndose a la proteína de unión a Duffy de Plasmodium vivax (PvDBP). Se requiere la interacción molecular PvDBP-DARC para mediar el proceso de invasión de merozoitos en los glóbulos rojos. La inhibición de este proceso posiblemente pueda controlar el crecimiento y desarrollo del parásito. (Metodología) El análisis de acoplamiento molecular dio como resultado los dos compuestos principales con el valor de energía de unión más bajo, incluida la 5,7-dihidroxiflavanona (-9,3 kcal/mol) y la pinostrobina (-9,2 kcal/mol). (Resultados) Estos compuestos previstos tienen una interacción más fuerte que la cloroquina como control. Además, los compue potenciales también interactúan con los residuos del sitio de unión de DARC y lo mantienen durante el proceso de simulación de dinámica molecular. De lo contrario, la cloroquina como control no puede retener el 75% de los residuos de unión hacia PvDBP. El estudio de dinámica molecular reveló que los tres complejos tienen una estabilidad relativamente similar. (Conclusiones) Predijimos que los dos compuestos bioactivos tienen potencial como inhibidores de la invasión de merozoitos.

Resumo (Objetivo) O Plasmodium vivax infecta amplamente muitas pessoas em algumas regiões. A singularidade de formar um estágio latente significa que a malária vivax pode ser induzida por recaída devido à infecção adicional. No presente estudo, utilizamos uma abordagem de simulação dinâmica e de acoplamento molecular para prever a possibilidade de compostos bioativos da família de plantas Zingiberaceae como candidatos a medicamentos antimaláricos, visand o aproteína de ligação Duffy do Plasmodium vivax (PvDBP). A interação molecular PvDBP-DARC é necessária para mediar o processo de invasão de merozoítos nos glóbulos vermelhos. A inibição deste processo pode possivelmente controlar o crescimento e desenvolvimento do parasita. (Metodologia) A análise de acoplamento molecular resultou nos dois principais compostos com o menor valor de energia de ligação, incluindo ,7-dihidroxiflavanona (-9,3 kcal/mol) e pinostrobina (-9,2 kcal/mol). (Resultados) Esses compostos previstos têm uma interação mais forte do que a cloroquina como controle. Além disso, os compostos potenciais também interagem e mantêm resíduos do sítio de ligação do DARC durante o processo de simulação de dinâmica molecular. Caso contrário, a cloroquina como controle não pode reter 75% dos resíduos de ligação ao três complexos apresentam estabilidade relativa compostos bioativos têm potencial como inibidor Palavras chave: Medicamentos antimalária; ePvmeesdmsilDBP. ntesa invício;O estudo de dinâmica molecular revelou que os emelhante. (Conclusões) Previmos que os dois asão de merozoítos. Plasmodium vivax; PvDBP; Zingiberáceas.

Abstract (Objective) Plasmodium vivax predominantly infects many people in numerous tropical areas, including Southeast Asia, the Western Pacific, the Americas, and the Eastern Mediterranean. The uniqueness of forming dormant stages can lead to relapse in vivax malaria upon further infection. This study used molecular docking and dynamic simulation to predict potential bioactive compounds from the Zingiberaceae plant family as inhibitors by targeting Plasmodium vivax Duffy Binding Protein (PvDBP). PvDBP-DARC molecular interaction is required to mediate the merozoite invasion process into red blood cells. Inhibiting this process can possibly control parasite growth and development. (Methodology) Molecular docking screening was conducted by using 138 natural compounds from the Zingiberaceae plant family targeting Plasmodium vivax Duffy binding protein (PvDBP). The top two compounds with the lowest binding energy were selected to be analyzed by pharmacokinetics prediction and molecular dynamic (MD) simulation. (Results) Molecular docking screening resulted in the top two compounds with the lowest binding energy value, including 5,7-dihydroxyflavanone (-9.3 kcal/mol) and pinostrobin (-9.2 kcal/mol). These compounds are predicted to have stronger interaction than chloroquine as a control. Furthermore, the potential compounds also interact with DARC binding site residues and maintain them during the molecular dynamic simulation process. Otherwise, chloroquine as a control cannot retain 75% binding residues towards PvDBP. A molecular dynamic study revealed that all three complexes have relatively similar stability. (Conclusions) We predicted that the two bioactive compounds (5,7-dihydroxyflavanone and pinostrobin) have the potential as merozoite invasion inhibitors.

RESUMO Amostras de sangue e fezes de perdiz chukar (Alectoris chukar), faisão-albino (Phasianus colchicus), faisão-prateado (Lophura nycthemera), periquito-de-rosa (Psittacula krameri) e perus (Meleagris gallopavo) foram analisadas para verificar a prevalência de parasitas. Para registrar os parasitas, essas cinco espécies de aves foram colocadas em gaiolas separadas no Centro de Conservação e Pesquisa de Aves, Departamento de Vida Selvagem e Ecologia, Universidade de Veterinária e Ciências Animais, Lahore, Paquistão. Cem amostras fecais e 100 amostras de sangue para cada espécie de ave foram inspecionadas para analisar os parasitas internos. Durante o presente estudo, foram examinadas 17 espécies de endoparasitas, 14 de amostras fecais e 3 de sangue. Foram estudadas duas espécies de ectoparasitas, ou seja, o ácaro Dermanyssus gallinae 42% e o carrapato aviário Args persicus 41%. Os parasitas sanguíneos incluíram Plasmodium juxtanucleare 50%, Leucoctoyzoon simond com prevalência parasitária de 40% e Aegyptinella pullorum com prevalência parasitária de 40%. As espécies parasitas registradas em amostras fecais incluíram 6 espécies de nematoides viz. Allodpa suctoria 2%, Syngamus traqueia com prevalência parasitária de 60%, Capillaria annulata 37,5%, Ascardia galli 24%, Capillaria anatis 40% e Heterakis gallinarum 28,3%. Da mesma forma, duas espécies de trematódeos viz. Prosthogonimus ovatus com prevalência parasitária de 50% e Prosthogonimus macrorchis 21% também foram documentados em amostras fecais de aves. Espécies de cestoide único Raillietina echinobothrida com prevalência parasitária de 72% e 3 espécies de protozoários, isto é, Eimeria maxima com prevalência parasitária de 21%, Giardia lamblia 41% e Histomonas meleagridis 18% foram documentadas durante a análise corpológica. Em nossa recomendação, o saneamento adequado, medicação e vacinação de invólucros de pássaros são sugeridos para evitar parasitas.

Abstract Blood and fecal samples of chukar partridge (Alectoris chukar), albino pheasant (Phasianus colchicus), silver pheasant (Lophura nycthemera), rose-ringed parakeet (Psittacula krameri) and turkeys (Meleagris gallopavo) were analyzed to check parasitic prevalence. To record parasites these five avian species were placed kept in separate cages at Avian Conservation and Research Center, Department of Wildlife an Ecology, University of Veterinary and Animal Sciences, Lahore, Pakistan. 100 fecal and 100 blood samples for each bird species were inspected to analyze internal parasites. During present study, 17 species of endoparasites 14 from fecal samples and three from blood were examined. Two species of ectoparasites i.e. mite Dermanyssus gallinae 42% and fowl ticks Args persicus 41%were studied. Blood parasites included Plasmodium juxtanucleare 50%, Leucoctoyzoon simond having parasitic prevalence 40%, and Aegyptinella pullorum having parasitic prevalence of 40%. Parasitic species recorded from fecal samples included 6 species of nematodes viz. Allodpa suctoria 2%. Syngamus trachea with parasitic prevalence of 60%, Capillaria annulata 37.5%, Ascardia galli 24%, Capillaria anatis 40% and Heterakis gallinarum 28.3%. Similarly, two species of trematodes viz. Prosthogonimus ovatus having parasitic prevalence of 50% and Prosthogonimus macrorchis 21% were also documented from fecal avian samples . Single cestode species Raillietina echinobothrida having parasitic prevalence of 72% and 3 protozoan species i.e. Eimeria maxima having parasitic prevalence of 21%, Giardia lamblia 41% and Histomonas meleagridis 18% were documented during corpological analysis. In our recommendation, proper sanitation, medication and vaccination of bird’s enclousres are suggested to avoid parasites.

ABSTRACT Background: Malaria is a major global public health issue with varying epidemiologies across countries. In Colombia, it is a priority endemic-epidemic event included in the national public health policy. However, evidence demonstrating nationwide variations in the disease behavior is limited. This study aimed to analyze changes in the levels and distribution of endemic-epidemic malaria transmission in the eco-epidemiological regions of Colombia from 1978 to 1999 and 2000 to 2021. Methods: We conducted a comprehensive time-series study using official secondary data on malaria-associated morbidity and mortality in Colombia from 1978 to 2021. Temporal-spatial and population variables were analyzed, and the absolute and relative frequency measures of general and regional morbidity and mortality were estimated. Results: We observed an 18% reduction in malaria endemic cases between the two study periods. The frequency and severity of the epidemic transmission of malaria varied less and were comparable across both periods. A shift was observed in the frequency of parasitic infections, with a tendency to match and increase infections by Plasmodium falciparum. The risk of malaria transmission varied significantly among the eco-epidemiological regions during both study periods. This study demonstrated a sustained decrease of 78% in malarial mortality. Conclusions: Although the endemic components of malaria decreased slightly between the two study periods, the epidemic pattern persisted. There were significant variations in the risk of transmission across the different eco-epidemiological regions. These findings underscore the importance of targeted public health interventions in reducing malarial morbidity and mortality rates in Colombia. Background countries endemicepidemic policy However limited ecoepidemiological eco epidemiological 197 199 200 2021 Methods timeseries time series malariaassociated associated Temporalspatial Temporal spatial analyzed estimated Results 18 periods falciparum 78 Conclusions persisted 19 20 202 1 7 2

Abstract Plasmodium falciparum is known to cause severe malaria, current treatment consists in artemisinin-based combination therapy, but resistance can lead to treatment failure. Knowledge concerning P. falciparum essential proteins can be used for searching new antimalarials, among these a potential candidate is shikimate dehydrogenase (SDH), an enzyme part of the shikimate pathway which is responsible for producing endogenous aromatic amino acids. SDH from P. falciparum (PfSDH) is unexplored by the scientific community, therefore, this study aims to establish the first protocol for active PfSDH expression. Putative PfSDH nucleotide sequence was used to construct an optimized expression vector pET28a+PfSDH inserted in E. coli BL21(DE3). As a result, optimal expression conditions were acquired by varying IPTG and temperature through time. Western Blot analysis was applied to verify appropriate PfSDH expression, solubilization and purification started with lysis followed by two-steps IMAC purification. Enzyme activity was measured spectrophotometrically by NADPH oxidation, optimal PfSDH expression occur at 0.1 mM IPTG for 48 hours growing at 37 °C and shaking at 200 rpm, recombinant PfSDH obtained after purification was soluble, pure and its physiological catalysis was confirmed. Thus, this study describes the first protocol for heterologous expression of PfSDH in soluble and active form. malaria artemisininbased artemisinin based therapy failure P antimalarials SDH, , (SDH) acids (PfSDH community therefore pET28aPfSDH pETaPfSDH pET28a pET E BL21DE3. BL21DE3 BLDE BL21 DE3 . BL DE BL21(DE3) result time twosteps two steps oxidation 01 0 1 0. 4 3 C 20 rpm confirmed Thus form (SDH aPfSDH pETa BL21DE BL2 BL21(DE3 2 BL21(DE

ABSTRACT Quilombo remnant communities are areas officially recognized by the Brazilian government as historical communities founded by formerly enslaved individuals. These communities are mostly located in the endemic areas of malaria in the Brazilian Amazon. We retrospectively described the prevalence of malaria among individuals living in 32 recognized quilombo remnant communities in the Baiao and Oriximina municipalities located in the Para State. The number of malaria cases and the Annual Parasitic Incidence (API) recorded by the Brazilian malaria surveillance system (SIVEP-Malaria) from January 2005 to December 2020 were analyzed. We found that all communities registered at least one case over the 16-year period, the most frequent parasitic species being Plasmodium vivax (76.1%). During this period, 0.44% (4,470/1,008,714) of the malaria cases registered in Para State were reported in these quilombo remnant communities, with frequencies of 10.9% (856/7,859) in Baiao municipality and 39.1% (3,614/9,238) in Oriximina municipality, showing that individuals living in these rural communities are exposed to malaria. These data indicate that effective surveillance requires improved measures to identify malaria transmission among vulnerable populations living in quilombo remnant communities in the Brazilian Amazon. Amazon 3 API (API SIVEPMalaria SIVEP Malaria (SIVEP-Malaria 200 202 analyzed 16year year 16 period 76.1%. 761 76.1% . 76 1 (76.1%) 044 0 44 0.44 4,470/1,008,714 44701008714 4 470 008 714 (4,470/1,008,714 109 10 9 10.9 856/7,859 8567859 856 7 859 (856/7,859 391 39 39.1 3,614/9,238 36149238 614 238 (3,614/9,238 20 76.1 (76.1% 04 0.4 4,470/1,008,71 4470100871 47 00 71 (4,470/1,008,71 10. 856/7,85 856785 85 (856/7,85 39. 3,614/9,23 3614923 61 23 (3,614/9,23 2 76. (76.1 0. 4,470/1,008,7 447010087 (4,470/1,008,7 856/7,8 85678 8 (856/7,8 3,614/9,2 361492 6 (3,614/9,2 (76. 4,470/1,008, 44701008 (4,470/1,008, 856/7, 8567 (856/7, 3,614/9, 36149 (3,614/9, (76 4,470/1,008 4470100 (4,470/1,008 856/7 (856/7 3,614/9 3614 (3,614/9 (7 4,470/1,00 447010 (4,470/1,00 856/ (856/ 3,614/ 361 (3,614/ ( 4,470/1,0 44701 (4,470/1,0 (856 3,614 36 (3,614 4,470/1, 4470 (4,470/1, (85 3,61 (3,61 4,470/1 447 (4,470/1 (8 3,6 (3,6 4,470/ (4,470/ 3, (3, 4,470 (4,470 (3 4,47 (4,47 4,4 (4,4 4, (4, (4

BACKGROUND Malaria is an infectious disease caused by protozoan parasites belonging to the genus Plasmodium. Human-to-human transmission depends on a mosquito vector; thus, the interruption of parasite transmission from humans to mosquitoes is an important approach in the fight against malaria. The parasite stages infectious to mosquitoes are the gametocytes, sexual stages that are ingested by the vector during a blood meal and transform into male and female gametes in the midgut. Immunity against sexual stage antigens expressed by gametocytes, gametes, and the zygote formed after fertilisation can interrupt the parasite sexual cycle in the mosquito. This transmission blocking immunity is mediated by specific antibodies ingested during the mosquito blood feed, inhibiting the parasite development in the midgut. Merozoite thrombospondin related anonymous protein (MTRAP) is a merozoite and gametocyte surface protein essential for gamete egress from erythrocytes and for parasite transmission to mosquitoes. OBJECTIVES Here, we evaluated the potential of the P. berghei MTRAP to elicit antibodies with the ability to inhibit gamete fertilisation in vitro. METHODS We expressed a soluble recombinant PbMTRAP and used it to immunise BALB/c mice. The transmission blocking activity of the anti-rPbMTRAP antibodies was tested through in vivo challenge experiments followed by in vitro conversion assays. FINDINGS Immunisations with the rPbMTRAP induced a strong antibody response and the antibodies recognised the native protein by Western Blot and IFA. Anti-rPbMTRAP present in the blood stream of immunised mice partially inhibited gamete conversion into ookinetes. CONCLUSION Our results indicate that antibodies to PbMTRAP may reduce but are not sufficient to completely block transmission. Plasmodium Humantohuman Human human thus malaria gametocytes midgut feed (MTRAP Here P BALBc BALB c antirPbMTRAP anti assays IFA AntirPbMTRAP Anti ookinetes

Isoquinoline alkaloids, especially from the Annonaceae family, have shown biological potential against parasites. Thus, this study aimed to evaluate the potential of the alkaloid fractions of the plant Fusaea longifolia against Plasmodium falciparum and annotate the compounds present in these samples. The tentative characterization of the alkaloids from the leaves and branches of F. longifolia was performed using liquid chromatography coupled to mass spectrometry (LC-MS/MS) and molecular networks. Through manual interpretation of the MS/MS spectra, 18 alkaloids were dereplicated from F. longifolia, 17 of which were reported for the first time in this species. An unpublished putative glycosylated alkaloid was annotated by interpreting the fragmentation data profile. Regarding biological activity, the fractions studied showed high activity against P. falciparum with half-maximal inhibitory concentration (IC50) of 2.42 and 1.60 μg mL-1 for branches and from the leaves, respectively, both similar to the reference standard quinine (IC50 of 1.24 μg mL-1). The structures of the 17 alkaloids were subjected to in silico analysis using molecular docking against four enzymes related to anti-Plasmodium activity (wild type (dm-PfDHFR) and mutant type (qm-PfDHFR), dihydroorotate dehydrogenase (PfDHODH) and purine nucleoside phosphorylase (PfPNP)). Molecular docking revealed strong interactions, especially between oxoxylopine 17 and hydroxycassythicine N-oxide 10, which may be potential new sources against P. falciparum. family parasites Thus samples F LCMS/MS LCMSMS LC MS (LC-MS/MS networks MSMS spectra 1 species profile P halfmaximal half maximal IC50 IC 242 2 42 2.4 160 60 1.6 mL1 mL mL- respectively (IC5 124 24 1.2 mL1. . mL-1) antiPlasmodium anti wild dmPfDHFR dm PfDHFR (dm-PfDHFR qmPfDHFR, qmPfDHFR qm , (qm-PfDHFR) PfDHODH (PfDHODH PfPNP. PfPNP (PfPNP)) interactions Noxide N oxide 10 LCMS IC5 4 2. 16 6 1. (IC 12 (qm-PfDHFR (PfPNP) (PfPNP

ABSTRACT This study reports a challenging diagnosis of Plasmodium ovale malaria in a Colombian citizen returning from Cameroon. Initial microscopy screenings conducted at two private hospitals yielded conflicting results, with the first showing negative smears and the second diagnosing P. vivax. Subsequent microscopy examinations at two government laboratories identified P. ovale, although the routine species-specific PCR strategy was negative. PCR confirmation was finally obtained when P. ovale wallikeri primers were used. Although P. ovale is not frequently found in Colombia, there is a clear need to include both P. ovale curtisi and P. ovale wallikeri in the molecular diagnostic strategy. Such need stems primarily from their extended latency period, which affects travelers, the increasing number of African migrants, and the importance of accurately mapping the distribution of Plasmodium species in Colombia. Cameroon results P vivax speciesspecific specific used Colombia period travelers migrants

The coinfection between malaria (ML) and arboviral diseases represents a major global public health problem, particularly in tropical and subtropical countries. Despite its relevance, this topic is still insufficiently discussed in the current literature. Here, we aimed to investigate the worldwide distribution, symptoms, and diagnosis during coinfection between ML and arboviral diseases. We conducted a systematic review following the Preferred reporting items for systematic reviews and meta-analyses (PRISMA) statement and assessed the selection and eligibility criteria, created and diagrammed maps, and analysed major symptoms with 95% confidence intervals (CI) using prevalence ratio and effect size, also performing latent class analysis. A total of 85,485 studies were retrieved, of which 56 were included: 57.14% in Asia, 25% in Africa, 14.30% in South America, and 3.56% in Europe. A total of 746 individuals were reported to be coinfected with Plasmodium and arbovirus. Concurrent ML, Dengue (DEN), Chikungunya (CHIK), and Zika (ZIK) patients are more likely to present headache and skin rash. Regarding diagnosis, 58,253 were made, of which 38,176 were positive (ML and at least one arboviral disease). The magnitude of these pathogens’ coexistence points out the pressing need for improvements in public health policies towards diagnosis and prevention of both diseases, especially in endemic areas. problem countries relevance literature Here distribution metaanalyses meta analyses PRISMA (PRISMA criteria maps 95 CI (CI size analysis 85485 85 485 85,48 retrieved 5 included 5714 57 14 57.14 Asia 25 Africa 1430 30 14.30 America 356 3 3.56 Europe 74 arbovirus DEN, DEN , (DEN) CHIK, CHIK (CHIK) ZIK (ZIK rash 58253 58 253 58,25 made 38176 38 176 38,17 disease. disease . disease) pathogens areas 9 8548 8 48 85,4 571 1 57.1 2 143 14.3 35 3.5 7 (DEN (CHIK 5825 58,2 3817 17 38,1 854 4 85, 57. 14. 3. 582 58, 381 38,

RESUMO Introdução: O Plasmodium falciparum é responsável por mais de 90 % da malária em todo o mundo. Objetivo: Caracterização dos aspectos clínico-epidemiológicos da malária grave em pacientes atendidos no Hospital Municipal de Cuimba, Zaire, Angola. Método: Foi realizado um estudo observacional, descritivo, transversal e retrospetivo, durante o período de janeiro a junho de 2023, em doentes notificados com malária grave. O estudo envolveu um total de 452 doentes com malária positiva, mas apenas 97 deles, que apresentavam uma complicação de malária grave, foram seleccionados como amostra. As variáveis utilizadas foram as seguintes: anemia grave, convulsões, hiperparasitemia, entre outras. Resultados: O sexo masculino foi predominante, com uma idade média de 14,8 anos e 43,3 % dos doentes com menos de cinco anos de idade. O Plasmodium falciparum foi encontrado em 59 doentes (60,8 %) com uma elevada prevalência de parasitemia. Manifestações de disfunção cerebral em associação com anemia grave foram encontradas no quadro clínico de 31 % dos doentes. Os 40,2 % dos doentes não tiveram complicações no período de admissão. A Síndrome de Angústia Respiratória Aguda foi a complicação mais frequente (18,6 %) e foi a principal causa de morte em 12,4 % dos doentes. O artesunato foi utilizado em 77,3 % dos doentes. Conclusões: A malária é um problema de saúde em Hospital Municipal de Cuimba, com uma maior incidência em crianças com menos de cinco anos de idade; a infeção por Plasmodium falciparum prevaleceu em pacientes com anemia grave.

ABSTRACT Introduction: Plasmodium falciparum is responsible for more than 90 % of malaria worldwide. Objective: Characterization of Clinical-epidemiological aspects of severe malaria in patients treated at the Municipal Hospital of Cuimba, Zaire, Angola. Method: An observational, descriptive, cross-sectional and retrospective study was conducted, during the period January - June 2023, in patients reported with severe malaria. The study involved a total of 452 patients with positive malaria but only 97 of them, who presented a complication of severe malaria, were selected as sample. The variables used were as follow: severe anemia, convulsions, hyperparasitemia, among others. Results: Male sex was predominant, with an average age of 14.8% and 43.3% of patients under five years of age. Plasmodium falciparum was found in 59 patients (60.8%) with a high parasitaemia prevalence. Manifestations of cerebral dysfunction in association with severe anemia were found in the clinical picture of 31% of patients. The 40.2% of patients had no complications in admission period. Acute Respiratory Distress Syndrome was the most frequent complication (18.6%), and it was the leading cause of death in 12.4% of patients. Artesunate was used in 77.3% of patients. Conclusions: Malaria is a health problem in Municipal Hospital of Cuimba, with a higher incidence in children under five years of age; Plasmodium falciparum infection prevailed in patients with severe anemia.

RESUMEN Introducción: El Plasmodium falciparum es el causante de más del 90 % de los casos de malaria en el mundo. Objetivo: Describir aspectos clínico-epidemiológicos de pacientes con malaria grave, atendidos en el Hospital Municipal de Cuimba, provincia de Zaire, República de Angola. Método: Estudio observacional, descriptivo, de corte transversal y retrospectivo, durante el periodo comprendido entre enero-junio de 2023, en pacientes con diagnóstico de malaria grave. El universo fue conformado por 452 pacientes positivos de malaria, la muestra quedó conformada por 97 pacientes que desarrollaron malaria grave. Se estudiaron variables asociadas como: anemia severa, convulsiones, hiperparasitemia, entre otras. Resultados: La media de edad fue de 14,8 años, el 43,3 % menor de cinco años, con predominio del sexo masculino (53,9 %). El Plasmodium falciparum estuvo presente en 59 casos (60,8 %), con elevadas tasas de parasitemia. Las manifestaciones de disfunción cerebral en asociación con la anemia severa resultaron estar en el cuadro clínico del 31 % de los pacientes. El 40,2 % de los enfermos no presentó complicaciones en su estadía hospitalaria. El síndrome de dificultad respiratoria aguda (18,6 %) fue la complicación más frecuente que sobrellevó al fallecimiento del 12,4 % de los pacientes. El artesunato fue usado en 77,3 % de los pacientes. Conclusiones: El paludismo representa un problema de salud en el Hospital Municipal de Cuimba, con mayor frecuencia en los menores de cinco años. Prevalece la infección por Plasmodium falciparum en pacientes con anemia severa.

RESUMEN Introducción: La malaria es una enfermedad infecciosa provocada por parásitos del género Plasmodium, y afecta a todas las regiones del continente africano; es responsable, en Angola, del 35 % de mortalidad en niños menores de cinco años. En Huambo, en 2021, hubo un incremento del número de casos por encima de la media nacional, notificándose una tasa de incidencia de 384 casos por cada 1000 habitantes, y en el municipio Ecunha, cifras de 71 089 casos, tasa de 680 casos por cada 1000. La gota gruesa es el método de elección para el diagnóstico de la infección palúdica. Diferentes investigadores describen las tiras de diagnóstico rápido Bioline® Malaria Ag P.f/P.v, como un método adecuado para el diagnóstico de la infección palúdica. En el municipio Ecunha, existen dificultades para realizar la gota gruesa a todos los pacientes, por lo que el uso de las técnicas de tiras de diagnóstico rápido pudiera ofrecer una buena alternativa para diagnóstico precoz y tratamiento inmediato de los niños infectados. Objetivo: Determinar la eficacia del test de diagnóstico rápido Bioline® Malaria Ag P.f/P.v, para el diagnóstico precoz de la malaria en niños, en el municipio Ecunha, provincia Huambo, Angola. Métodos: Se realizó una evaluación de método diagnóstico de la infección palúdica en el Hospital Municipal do Ecunha, en Huambo, Angola, entre abril de 2021 y abril de 2022. Resultados: Si bien la malaria constituye una de las principales enfermedades metaxénicas a nivel nacional, son pocas las cifras disponibles con respecto a la utilidad de las pruebas rápidas en la población angolana, incluyendo a pacientes asintomáticos o con bajas parasitemias, en comparación con la gota gruesa y extendida. Conclusiones: El test de diagnóstico rápido Bioline® Malaria Ag P.f/P.v presentó una eficacia similar para el diagnóstico de la infección palúdica en comparación con la gota gruesa.

ABSTRACT Introduction: Malaria is an infectious disease caused by parasites of the genus Plasmodium, and affects all regions of the African continent. In Angola, it is responsible for 35% of mortality in children under five years of age. In Huambo, in 2021, there was an increase in the number of cases above the national average, reporting an incidence rate of 384 cases per 1000 inhabitants, and in the Ecunha municipality figures of 71,089 cases, a rate of 680 cases per every 1000. The thick smear is the method of choice for the diagnosis of malarial infection. Different researchers describe the BiolineTM Malaria Ag P.f/P.v rapid diagnostic strips as a suitable method for the diagnosis of malaria infection. In the Ecunha municipality, there are difficulties in performing thick smears on all patients, so the use of rapid diagnostic strip techniques could offer a good alternative for early diagnosis and immediate treatment of infected children. Objective: To determine the effectiveness of the BiolineTM Malaria Ag P.f/P.v rapid diagnostic test, for the early diagnosis of malaria in children, in the Ecunha municipality, Huambo province, Angola. Methods: An evaluation of the diagnostic method of malaria infection was carried out at the Municipal Hospital of Ecunha, Huambo, Angola, between April 2021 and April 2022. Results: Although malaria constitutes one of the metaxenic diseases at the national level, few figures are available regarding the usefulness of rapid tests in the Angolan population, including asymptomatic patients or those with low parasitemia, compared to thick and extended smear. Conclusions: The BiolineTM Malaria Ag P.f/P.v rapid diagnostic test presented a similar efficacy for the diagnosis of malaria infection compared to the thick smear.

RESUMO As espécies de Plasmodium são responsáveis pela transmissão da malária, que ainda é uma das doenças mais perigosas para os seres humanos no mundo. Este estudo teve como objetivo avaliar o efeito supressor do SB sobre a parasitemia em camundongos infectados com Plasmodium chabaudi. Um total de 30 camundongos livres da doença foram divididos aleatoriamente em seis grupos. O primeiro grupo de controle não infectado recebeu apenas água destilada diariamente por 7 dias por via oral. Depois de serem infectados com 106 de P. chabaudi nos outros cinco grupos, os camundongos foram submetidos à gavagem com 0,2mL/camundongo de uma solução contendo 25%, 50% ou 100% de SB, respectivamente. O quinto grupo recebeu oralmente 10mg/kg de fosfato de cloroquina (CQ). O sexto conjunto de camundongos serviu como o grupo infectado. Após a administração dos tratamentos durante um teste de supressão que durou cinco dias, foi realizado um exame diário de esfregaços de sangue corados com Giemsa. A bile de carneiro foi capaz de reduzir a parasitemia de forma quase semelhante ao medicamento de referência usado, a cloroquina. Além disso, a bile diminuiu significativamente a taxa de diarreia da infecção em camundongos, a taxa de sobrevivência dos camundongos, a porcentagem de parasitemia e a taxa de supressão. A alteração histológica causada pelo parasita foi aprimorada pela SB. Após o tratamento, houve também um aumento nas quantidades das enzimas hepáticas fosfatase alcalina, aspartato aminotransferase e alanina aminotransferase. Os resultados indicam que a bile tem atividade antimalárica e pode controlar a porcentagem de parasitemia e a supressão do parasita. São necessárias mais investigações para determinar os mecanismos de ação da bile in vivo. malária mundo 3 grupos oral 10 P 02mLcamundongo mLcamundongo 0 2mL camundongo mL 25 25% 50 100 respectivamente 10mgkg mgkg 10mg kg mg CQ. CQ . (CQ) Giemsa usado disso tratamento alcalina vivo 1 2 5 (CQ

ABSTRACT Plasmodium species are responsible for the transmission of malaria, which is still one of the most dangerous diseases to humans in the world. This study aimed to evaluate the suppressive effect of SB on parasitemia in mice infected with Plasmodium chabaudi infection. A total of 30 disease-free mice were randomly assigned to six groups. The first control non-infected group received only distilled water daily for 7 days by oral route. After being infected with 106 of P. chabaudi in the other five groups, the mice were gavaged with 0.2mL/mice of a solution containing either 25%, 50%, or 100% of SB, respectively. The fifth group orally received 10mg/ kg chloroquine phosphate (CQ). The sixth set of mice served as the infected group. Following the administration of treatments during a suppression test that lasted for five days, a daily examination of blood smears stained with Giemsa was performed. Sheep bile was able to decrease parasitemia nearly to the used reference drug, chloroquine. In addition, bile significantly decreased the diarrhea rate of infection in mice, the survival rate of mice, the parasitemia percentage, and the suppression ratio. The parasite's caused histological change was enhanced by the SB. After treatment, there was also a rise in the amounts of the liver enzymes alkaline phosphatase, aspartate aminotransferase, and alanine aminotransferase. Findings indicate that bile has antimalarial activity and can control parasitemia percentage and parasite suppression. We need further investigations to determine the mechanisms of action of the bile in vivo. malaria world 3 diseasefree disease free groups noninfected non route 10 P 02mLmice mLmice 0 2mL mL 25 25% 50 50% 100 respectively 10mg mg CQ. CQ . (CQ) performed drug addition ratio parasites s treatment phosphatase aminotransferase vivo 1 2 5 (CQ

ABSTRACT Acquired thrombotic thrombocytopenic purpura (TTP) is a rare life-threatening disorder characterized by microangiopathic hemolytic anemia, severe thrombocytopenia, and organ damage. We present the case of a 71-year-old man initially diagnosed with malaria-like symptoms and displaying markers of microangiopathic hemolytic anemia, severe thrombocytopenia, renal injury, and neurological impairment. Despite antimalarial treatment, acquired TTP was suspected. Plasma exchange and immunosuppressive therapy led to clinical improvement, normalizing the platelet count and hemolytic profile. Diagnostic confirmation revealed significantly reduced ADAMTS13 levels. Following the proposed treatment, the patient's ADAMTS13 levels normalized. This case illustrates acquired TTP linked to uncomplicated Plasmodium vivax malaria. (TTP lifethreatening life threatening anemia thrombocytopenia damage 71yearold yearold 71 year old malarialike malaria like injury impairment treatment suspected improvement profile ADAMTS ADAMTS1 patients patient s normalized 7

Resumen: La malaria es un problema de salud pública y los casos diagnosticados en la capital de Roraima, Brasil, tienen el potencial de caracterizar la carga de la enfermedad en todo el estado. El objetivo de este estudio fue describir los aspectos epidemiológicos, clínicos y de laboratorio de los casos de malaria diagnosticados en Boa Vista. Para ello, se realizó un estudio descriptivo y transversal en dos unidades de salud del municipio, con personas diagnosticadas con malaria y que aceptaron responder el cuestionario. De 206 participantes, caracterizados como hombres, pardos y jóvenes, el 96% (198) reportó actividad minera ilegal. Entre los mineros, el 66% (131) procedían de otros estados de Brasil o de otros países. Las minas estaban ubicadas principalmente en el territorio Yanomami, en Roraima. La infección por Plasmodium vivax se produjo en el 74% (153) de los participantes. Entre los mineros, hubo relatos de hospitalizaciones por malaria grave, ataques previos de malaria y retrasos en el tratamiento tras de la aparición de los síntomas. Aunque el 73% (145) de los mineros informó saber cómo se transmitía la malaria, solo el 54% (107) usaba mosquiteros o repelentes. El uso de Artecom y cloroquina por parte de los mineros no está destinado a un tratamiento completo, sino al alivio de los síntomas para permitir el regreso a las minas de oro. Esto resalta la importancia de la vigilancia molecular para detectar la resistencia a los antipalúdicos. Los indígenas son considerados una población vulnerable a la malaria, y los mineros promueven el aumento de la malaria en las Tierras Indígenas de Roraima. Por lo tanto, el acceso al diagnóstico y tratamiento en zonas indígenas invadidas por mineros es imperativo para combatir esta enfermedad que asola a las comunidades indígenas y amenaza la salud pública a gran escala en el objetivo de erradicar la malaria en el estado. Resumen Roraima estado epidemiológicos Vista ello municipio cuestionario 20 participantes hombres jóvenes 96 198 (198 ilegal 66 131 (131 países Yanomami 74 153 (153 grave 73 145 (145 54 107 (107 repelentes completo oro antipalúdicos tanto 2 9 19 (19 6 13 (13 7 15 (15 14 (14 5 10 (10 1 (1 (

Resumo: A malária é um problema de saúde pública e os casos diagnosticados na capital de Roraima, Brasil, têm potencial para caracterizar a carga da doença em todo o estado. O objetivo deste estudo foi descrever os aspectos epidemiológicos, clínicos e laboratoriais dos casos de malária diagnosticados em Boa Vista. Para tanto, foi realizado um estudo descritivo e transversal em duas unidades de saúde do município, com indivíduos diagnosticados com malária e que concordaram em responder ao questionário. De 206 participantes, caracterizados como homens, pardos e jovens, 96% (198) relataram atividade de garimpo ilegal. Entre garimpeiros, 66% (131) vieram de outros estados do Brasil ou de outros países. As minas estavam localizadas principalmente no território Yanomami, em Roraima. A infecção por Plasmodium vivax ocorreu em 74% (153) dos participantes. Entre garimpeiros, houve relatos de internações por malária grave, ataques prévios de malária e atrasos no tratamento após o início dos sintomas. Embora 73% (145) dos garimpeiros tenham relatado saber como a malária era transmitida, apenas 54% (107) usavam mosquiteiros ou repelentes. O uso de Artecom e cloroquina pelos garimpeiros não se destina ao tratamento completo, mas apenas ao alívio dos sintomas, permitindo o retorno às minas de ouro. Isso ressalta a importância da vigilância molecular para detectar a resistência antimalárica. Os indígenas são considerados uma população vulnerável à malária, e os garimpeiros promovem o aumento da malária nas Terras Indígenas de Roraima. Portanto, o acesso ao diagnóstico e tratamento em áreas indígenas invadidas por garimpeiros é imperativo para o enfrentamento dessa doença que assola as comunidades indígenas e ameaça a saúde pública em larga escala na meta de erradicar a malária no estado. Resumo Roraima estado epidemiológicos Vista tanto município questionário 20 participantes homens jovens 96 198 (198 ilegal 66 131 (131 países Yanomami 74 153 (153 grave sintomas 73 145 (145 transmitida 54 107 (107 repelentes completo ouro antimalárica Portanto 2 9 19 (19 6 13 (13 7 15 (15 14 (14 5 10 (10 1 (1 (

Abstract: Malaria is a public health problem and the cases diagnosed in the capital of Roraima, Brazil, show potential to characterize the burden of the disease in the state. This study aimed to describe the epidemiological, clinical, and laboratory aspects of malaria cases diagnosed in Boa Vista. For this purpose, a descriptive, cross-sectional study was conducted in two health units in the city, with individuals diagnosed and who agreed to respond the questionnaire. Of the total of 206 participants, characterized as men, mixed-race, and young, 96% (198) reported participating in illegal mining activity. Among the group of miners, 66% (131) came from other states of Brazil or other countries. The mines were mainly located in the Yanomami territory in Roraima. Plasmodium vivax infection occurred in 74% (153) of participants. In the miner’s group, hospitalizations for severe malaria, previous malaria attacks, and delays in treatment after the onset of symptoms were reported. Although 73% (145) of miners reported knowing how malaria was transmitted, only 54% (107) used mosquito nets or repellents. The use of Artecom and chloroquine by miners is not for the complete treatment but only to relieve symptoms for returning to gold mines, highlighting the importance of molecular surveillance to antimalarial resistance. Indigenous peoples are considered vulnerable to malaria and miners promotes the increase of malaria in Roraima Indigenous Lands. Therefore, access to diagnosis and treatment in Indigenous areas invaded by miners is imperative to confront this disease that ravages Indigenous communities and threatens public health on a large scale to achieve the goal of eliminating malaria in the state. Abstract state epidemiological clinical Vista purpose descriptive crosssectional cross sectional city questionnaire 20 participants men mixedrace, mixedrace mixed race, race mixed-race young 96 198 (198 activity 66 131 (131 countries 74 153 (153 miner s attacks 73 145 (145 transmitted 54 107 (107 repellents resistance Lands Therefore 2 9 19 (19 6 13 (13 7 15 (15 14 (14 5 10 (10 1 (1 (

Neglected tropical diseases (NTDs) encompass a diverse group of 20 medical conditions triggered by various pathogens, including viruses, bacteria, protozoa, and parasitic worms. Diseases caused by parasitic protozoa and parasitic worms show the highest incidence worldwide. NTDs predominantly afflict impoverished communities in tropical regions, although some exhibit a broader geographic reach. It is estimated that over 1 billion people suffer from NTDs, spanning 149 countries. Additionally, malaria is caused by protozoa of the genus Plasmodium and is highly prevalent in similar geographic regions. New drugs are urgently needed for the treatment of these diseases. In the last decades, various research groups have endeavored to develop organometallic compounds with potential applications as drugs against malaria and NTDs diseases caused by trypanosomatid parasites and parasitic helminths. This perspective highlights selected efforts from these groups in the pursuit of innovative therapeutic solutions. Relevant bioorganometallic compounds belonging to the typical classes of metallocenes, “half sandwich” M-arenes and metal carbonyls will be particularly described. (NTDs 2 pathogens viruses bacteria worldwide regions reach 14 countries Additionally decades helminths solutions metallocenes half sandwich Marenes M arenes described