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Related Concept Videos

Antiprotozoal Agents01:21

Antiprotozoal Agents

Leishmaniasis is a widespread parasitic disease caused by several Leishmania species. It affects millions of people each year and remains a major public health problem in endemic regions. First-line treatment relies on pentavalent antimonials, including meglumine antimoniate and sodium stibogluconate. Even so, how these drugs work has not been fully clear, especially their interaction with parasite-specific biochemical pathways. One key target is trypanothione reductase (TR), an enzyme that...
American Trypanosomiasis01:22

American Trypanosomiasis

Chagas disease, or American trypanosomiasis, is a vector-borne parasitic infection caused by Trypanosoma cruzi, a flagellated protozoan (kinetoplastid) of the family Trypanosomatidae. The disease is endemic in Latin America, although cases are increasingly reported worldwide due to human migration. Transmission most commonly occurs when feces of infected triatomine bugs contaminate bite wounds or mucosal surfaces; additional routes include congenital, transfusional, transplant-related, and oral...
Anthelminthic Agents01:15

Anthelminthic Agents

Anthelmintic drugs differ significantly from antiparasitic therapies targeting protozoa, primarily due to differences in parasite biology. Whereas most protozoal treatments act on proliferating cells, anthelmintics are typically directed against mature, nonproliferative helminths. The therapeutic approach considers the helminth's reliance on neuromuscular coordination, glucose metabolism, and microtubular integrity for survival, reproduction, and localization within the host. Most anthelmintics...
Aryldiazonium Salts to Azo Dyes: Diazo Coupling01:11

Aryldiazonium Salts to Azo Dyes: Diazo Coupling

The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the para position.
Physical Properties of Amines01:26

Physical Properties of Amines

Amines with low molecular weight are usually gaseous at room temperature, while those with high molecular weight are liquid or solids in nature. Usually, low molecular weight amines have a rotten fish-like smell. Diamines typically have a pungent smell. For instance, cadaverine and putrescine, depicted in Figure 1, are two molecules responsible for decaying tissue.

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Purification of Extracellular Trypanosomes, Including African, from Blood by Anion-Exchangers (Diethylaminoethyl-cellulose Columns)
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Purification of Extracellular Trypanosomes, Including African, from Blood by Anion-Exchangers (Diethylaminoethyl-cellulose Columns)

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Diamidines for human African trypanosomiasis.

Mary F Paine1, Michael Zhuo Wang, Claudia N Generaux

  • 1University of North Carolina at Chapel Hill, Eshelman School of Pharmacy, Campus Box 7569, and Department of Pathology and Laboratory Medicine, Campus Box 7525, Chapel Hill, NC 27599, USA

Current Opinion in Investigational Drugs (London, England : 2000)
|August 20, 2010
PubMed
Summary

New aromatic diamidines offer improved treatment for human African trypanosomiasis (HAT). Researchers are developing orally active drugs and compounds that can penetrate the central nervous system (CNS) for better HAT therapy.

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Area of Science:

  • Medicinal Chemistry
  • Parasitology
  • Pharmacology

Background:

  • Aromatic diamidines are effective against trypanosomes.
  • Pentamidine, a diamidine, has been used for over 60 years to treat human African trypanosomiasis (HAT).
  • Current treatments like pentamidine require parenteral administration and are only effective before central nervous system (CNS) invasion.

Purpose of the Study:

  • To review the progress in developing novel diamidine compounds for HAT treatment.
  • To highlight advancements in creating orally active diamidine prodrugs.
  • To discuss new diamidine generations capable of penetrating the CNS.

Main Methods:

  • Literature review of research on diamidine development for HAT.
  • Analysis of studies on orally active prodrugs.
  • Examination of novel compounds designed for CNS penetration.

Main Results:

  • Significant progress has been made in designing novel diamidines.
  • Development of orally active diamidine prodrugs has been achieved.
  • New diamidine compounds demonstrating CNS penetration capabilities have emerged.

Conclusions:

  • Diamidine research has yielded promising advancements for HAT treatment.
  • Novel diamidines offer potential for improved therapeutic strategies, including oral administration and CNS targeting.
  • Further development of these compounds could overcome limitations of current HAT therapies.