The structure of tubulin-binding cofactor A from Leishmania major infers a mode of association during the early stages of microtubule assembly

This study provides a reagent and template to support further work in this area.
Source: Acta Crystallographica Section F - Category: Biochemistry Authors: Tags: chaperone helical fold protein – protein interactions selenomethionine tubulin-binding protein research communications Source Type: research

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Abstract Asymptomatic VL is a concern, considering the risk of transmission in highly endemic areas due to human-to-human transmission. The aim of this study was to report the sero-epidemiological prevalence in Bihar, India, a highly endemic area of VL, using the leishmanin skin test (LST) and the direct agglutination test (DAT). This was a cross-sectional study performed in Muzaffarpur, Bihar, India. Relatives of patients with VL were tested by LST and DAT. Other epidemiological data were evaluated and correlated with tests results. Forty individuals (either previous or current patients), and 109 household contac...
Source: Revista do Instituto de Medicina Tropical de Sao Paulo - Category: Tropical Medicine Authors: Tags: Rev Inst Med Trop Sao Paulo Source Type: research
Publication date: January 2021Source: Biochimica et Biophysica Acta (BBA) - Molecular Cell Research, Volume 1868, Issue 1Author(s): Ruchir Rastogi, Anjali Kapoor, Jitender Kumar Verma, Irshad Ansari, Chandni Sood, Kamal Kumar, Amitabha Mukhopadhyay
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - Category: Molecular Biology Source Type: research
The objective of this study was to evaluate the antibacterial action of filamentous bacteria isolated from the Byrsonima crassifolia leaf. An endophytic bacterium has been identified by classical and molecular techniques as Streptomyces ansochromogene. Screening for antibacterial action against pathogens with medical relevance (Klebsiella pneumoniae ATCC 700603, Pseudomonas aeruginosa ATCC 15692, Staphylococcus aureus ATCC 6538, Corynebacterium diphtheriae ATCC 27012, Mycobacterium abscessus, Cryptococcus gattii ATCC 24065, and Cryptococcus neoformans ATCC 24067) demonstrated activity against the bacterium P. aeruginosa AT...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
The objective of this study was to conduct a cost-effectiveness analysis of the nine available diagnostic tests for human VL in HIV-infected and uninfected patients in Brazil. The perspective of analysis was the Brazilian public health system, and the outcome of interest was "cases diagnosed correctly". The costs of the tests were estimated using the microcosting technique, and comparisons were performed with decision trees. Sensitivity anal yses were explored applying variations in cost and effectiveness values. For VL diagnosis among HIV-uninfected patients, using blood samples for the rapid tests (RDTs), the n...
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
We described the composition of the essential oils of two plants native from Brazil, Myrcia ovata, with geranial and neral as major constituents, and Eremanthus erythropappus, with α-bisabolol. In vitro effects of these essential oils on L. amazonensis promastigotes growth and ultrastructure were analysed as well as their cytotoxicity to murine macrophages. Both oils were highly active with IC50/96 h of 8.69 and 9.53 µg/mL for M. ovata and E. erythropappus against promastigotes and caused ultrastructural alterations including mitochondrial enlargement. Cytotoxicity for murine macrophages varied wi...
Source: Natural Product Research - Category: Biochemistry Authors: Tags: Nat Prod Res Source Type: research
A series of trifluoromethylated pyrazole thiosemicarbazone, trifluromethylated pyrazole isothiosemicarbazone, and trifluoromethylated pyrazole 2-amino-1,3,4-thiadiazole hybrids were synthesized and evaluated in vitro against the promastigote form of Leishmania amazonensis and the epimastigote form of Trypanosoma cruzi, the pathogens causing the neglected tropical diseases leishmaniasis and Chagas disease, respectively. The results show the potential of these compounds regarding their antiparasitic properties. Studies on the structure-activity relationship demonstrated that compounds containing a bulky group at the para pos...
Source: Frontiers in Pharmacology - Category: Drugs & Pharmacology Source Type: research
Leishmaniasis and trypanosomiasis are largely neglected diseases prevailing in tropical and subtropical conditions. These are an arthropod-borne zoonosis that affects humans and some animals and is caused by infection with protozoan of the genera Leishmania and Trypanosoma, respectively. These parasites present high genomic plasticity and are able to adapt themselves to adverse conditions like the attack of host cells or toxicity induced by drug exposure. Different mechanisms allow these adapting responses induced by stress, such as mutation, chromosomal rearrangements, establishment of mosaic ploidies, and gene expansion....
Source: Frontiers in cellular and infection microbiology - Category: Microbiology Source Type: research
In conclusion, the mkDNA-based qPCR assay that we developed in this study can be used not only for diagnosis of both cutaneous and visceral leishmaniasis with high sensitivity and specificity, but also for evaluating the severity and treatment efficacy of this disease, presenting a rapid and accurate tool for clinical surveillance, treatment monitoring and the end point determination of leishmaniasis.
Source: Frontiers in cellular and infection microbiology - Category: Microbiology Source Type: research
iro M Abstract Quinolines are nitrogen heterocyclic compounds ubiquitous in nature and largely used as a structural component of dyes, solvent for resins, terpenes as well as during the production of several other chemical stuffs, including pesticides. Quinolines, such as quinine and chloroquine, exhibit various pharmacological properties, acting as antimalarial drugs, antiparasitic, antibacterial, antiviral, antifungal, and anticancer agents, besides being in clinical use for autoimmune diseases. Presently, a brief review is present regarding the biological effect and clinical use of quinolines and derivatives up...
Source: Current Pharmaceutical Design - Category: Drugs & Pharmacology Authors: Tags: Curr Pharm Des Source Type: research
This study investigated the in vitro and in vivo leishmanicidal activity of synthetic coumarin compounds (C1-C5) in parasites Leishmania (L.) amazonensis and L. (L.) infantum chagasi. The cytotoxicity of these compounds in mammalian cells and their influence on production of reactive oxygen species was also investigated. In vitro assays showed that 8-methoxy-3-(4-nitrobenzoyl)-6-propyl-2H-chromen-2-one (C4) was as active as AMP B mainly in the amastigote form (p 
Source: Molecular Biology Reports - Category: Molecular Biology Authors: Tags: Mol Biol Rep Source Type: research
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