2-Amino-1,3,4-thiadiazoles as prospective agents in trypanosomiasis and other parasitoses.

2-Amino-1,3,4-thiadiazoles as prospective agents in trypanosomiasis and other parasitoses. Acta Pharm. 2020 Sep 01;70(3):259-290 Authors: Serban G Abstract Parasitic diseases are a serious public health problem affecting hundreds of millions of people worldwide. African trypanosomiasis, American trypanosomiasis, leishmaniasis, malaria and toxoplasmosis are the main parasitic infections caused by protozoan parasites with over one million deaths each year. Due to old medications and drug resistance worldwide, there is an urgent need for new antiparasitic drugs. 1,3,4-Thiadiazoles have been widely studied for medical applications. The chemical, physical and pharmacokinetic properties recommend 1,3,4-thiadiazole ring as a target in drug development. Many scientific papers report the antiparasitic potential of 2-amino-1,3,4-thiadiazoles. This review presents synthetic 2-amino-1,3,4-thiadiazoles exhibiting antitrypanosomal, antimalarial and antitoxoplasmal activities. Although there are insufficient results to state the quality of 2-amino-1,3,4-thiadiazoles as a new class of antiparasitic agents, many reported derivatives can be considered as lead compounds for drug synthesis and a promise for the future treatment of parasitosis and provide a valid strategy for the development of potent antiparasitic drugs. PMID: 32074064 [PubMed - in process]
Source: Acta Pharmaceutica - Category: Drugs & Pharmacology Authors: Tags: Acta Pharm Source Type: research

Related Links:

Wow - we received so many excellent comments on how parasites and the number 5 go together! Here are many of them - in no particular order - for your viewing pleasure:Pentatrichomonas hominis is a nonpathogenic intestinal flagellate named for its 5 flagella (penta from the Greek pente, meaning five + trich, pertaining to hair [flagella]). By Neil Anderson and Bernardino Rocha.There are 5 lobes of the lung, and all can be infected by Paragonimusspecies. By Brian Duresko.The are 5Plasmodiumspecies that are responsible for the bulk of malaria in humans:P. falciparum, P. vivax, P. ovale, P. malariae, andP. knowlesi(t...
Source: Creepy Dreadful Wonderful Parasites - Category: Parasitology Source Type: blogs
Polyamines are polycationic organic amines that are required for all eukaryotic life, exemplified by the polyamine spermidine, which plays an essential role in translation. They also play more specialized roles that differ across species, and their chemical versatility has been fully exploited during the evolution of protozoan pathogens. These eukaryotic pathogens, which cause some of the most globally widespread infectious diseases, have acquired species-specific polyamine-derived metabolites with essential cellular functions and have evolved unique mechanisms that regulate their core polyamine biosynthetic pathways. Many...
Source: Journal of Biological Chemistry - Category: Chemistry Authors: Tags: Thematic Minireviews Source Type: research
Abstract By 2050 our civilized planet may be comprised predominantly of networked megacities embedded in warm subtropical and tropical climates, and under stress from climate change and catastrophic weather events. Urban slum areas in these cities, including those found in wealthier middle- and high-income nations (blue marble health), will be especially vulnerable to disease. Moreover, regional conflicts fought over shifting and limited resources, including water, will collapse health systems infrastructures to further promote disease emergence and reemergence. Thus while by 2050 we might congratulate ourselves f...
Source: Advances in Parasitology - Category: Parasitology Authors: Tags: Adv Parasitol Source Type: research
Little attention has been devoted to the role of HLA‐G gene and molecule on parasitic disorders, and the available studies have focused on malaria, African and American trypanosomiasis, leishmaniosis, toxoplasmosis and echinococcosis. After reporting a brief description regarding the role of the cells of innate and adaptive immune system against parasites, we reviewed the major features of the HLA‐G gene and molecule and the role of HLA‐G on the major cells of immune system. Increased levels of soluble HLA‐G (sHLA‐G) have been observed in patients presenting toxoplasmosis and in the active phase of echinococcosis...
Source: Tissue Antigens - Category: Allergy & Immunology Authors: Tags: REVIEW ARTICLE Source Type: research
Abstract Melatonin (N-acetyl-5-methoxytryptamine) is a circadian hormone produced in vertebrates by the pineal gland and other organs. Melatonin is believed to influence immune cells leading to modulation of the proliferative response of stimulated lymphocytes as well as cytokine production. Due to the antioxidant and immunomodulatory effects of melatonin, it is suggested that this molecule could be a therapeutic alternative agent to fight bacterial, viral, and parasitic infections by a variety of mechanisms. Herein, we review the effects of melatonin on the cell biology of protozoan parasites and host's immune re...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - Category: Drugs & Pharmacology Authors: Tags: Biomed Pharmacother Source Type: research
Abstract Open access drug discovery provides a substantial resource for diseases primarily affecting the poor and disadvantaged. The open access Pathogen Box is comprised of a collection of compounds with demonstrated biological activity against specific pathogenic organisms. The supply of this resource by the Medicines for Malaria Venture has the potential to provide new chemical starting points for a number of tropical and neglected diseases, through repurposing of these compounds for use in drug discovery campaigns for these additional pathogens. Here we have tested the Pathogen Box against kinetoplastid parasi...
Source: Antimicrobial Agents and Chemotherapy - Category: Microbiology Authors: Tags: Antimicrob Agents Chemother Source Type: research
Chagas disease, caused by Trypanosoma cruzi, although endemic in many parts of Central and South America, is emerging as a global health threat through the potential contamination of blood supplies. Consequently, in the absence of a gold standard assay for the diagnosis of Chagas disease, additional antigens or strategies are needed. A proteomic analysis of the trypomastigote excreted-secreted antigens (TESA) associated with exosomal vesicles shed by T. cruzi identified ~80 parasite proteins, with the majority being trans-sialidases. Mass spectrometry analysis of immunoprecipitation products performed using Chagas immune s...
Source: Journal of Clinical Microbiology - Category: Microbiology Authors: Tags: Immunoassays Source Type: research
Abstract Adipose tissue (AT) is no longer regarded as an inert lipid storage, but as an important central regulator in energy homeostasis and immunity. Three parasite species are uniquely associated with AT during part of their life cycle: Trypanosoma cruzi, the causative agent of Chagas disease; Trypanosoma brucei, the causative agent of African sleeping sickness; and Plasmodium spp., the causative agents of malaria. In AT, T. cruzi resides inside adipocytes, T. brucei is found in the interstitial spaces between adipocytes, while Plasmodium spp. infect red blood cells, which may adhere to the blood vessels supply...
Source: Trends in Parasitology - Category: Parasitology Authors: Tags: Trends Parasitol Source Type: research
This article is part HuffPost’s Project Zero campaign, a yearlong series on neglected tropical diseases and efforts to eliminate them. More than 1 billion people on the planet suffer from illnesses that the world pays little attention to. Neglected tropical diseases are a group of at least 18 diseases that primarily affect people living in poverty in tropical regions of the world and are virtually unknown elsewhere, according to the World Health Organization. These are diseases like river blindness, which has infected 18 million people worldwide and caused blindness in 270,000 people; or...
Source: Science - The Huffington Post - Category: Science Source Type: news
, Castro MS Abstract This review discusses the importance and properties of antimicrobial peptides from frogs and their synthetic analogues as potential therapeutic alternatives in fighting not only bacterial infections but also protozoans involved with the major neglected diseases, which afflict human populations (e.g., Chagas disease, African sleeping sickness, Leishmaniasis and malaria). Here, we emphasize their multifunctional properties such as promising broad-spectrum drugs that also target protozoan parasites. PMID: 27262306 [PubMed - as supplied by publisher]
Source: Protein and Peptide Letters - Category: Biochemistry Authors: Tags: Protein Pept Lett Source Type: research
More News: African Sleeping Sickness | Chagas Disease | Chemistry | Drugs & Pharmacology | International Medicine & Public Health | Malaria | Parasitic Diseases | Parasitology | Sleeping Sickness