Parenteral aminosidine is not effective for Peruvian mucocutaneous leishmaniasis

Alejandro Llanos-Cuentas1, Juan Echevarria, Carlos Seas

  • 1Instituto de Medicina Tropical Alexander Von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru. allanos@upch.edu.pe

Insights

Parenteral aminosidine sulphate (AS) is not effective for treating mucocutaneous leishmaniasis (MCL). In a trial comparing AS to meglumine antimonate (MA), no patients treated with AS were cured, while 47% of those on MA showed improvement.

Area of Science:

  • Tropical medicine
  • Infectious diseases
  • Parasitology

Background:

  • Mucocutaneous leishmaniasis (MCL) presents limited therapeutic options.
  • There is a need for effective and safe treatments for MCL.

Purpose of the Study:

  • To evaluate the efficacy, safety, and tolerance of parenteral aminosidine sulphate (AS) compared to intravenous meglumine antimonate (MA) for moderate MCL.
  • To determine cure rates and adverse events in patients treated with AS versus MA.

Main Methods:

  • A randomized open trial was conducted in Cuzco, Peru.
  • 38 patients with moderate MCL were enrolled: 21 received parenteral AS (14 mg/kg/d for 21 days) and 17 received intravenous MA (20 mg/kg/d for 28 days).
  • Cure was defined as complete healing with re-epithelialization within 1 year.

Main Results:

  • The trial was stopped early due to significant differences in response.
  • Cure rates were 0% (0/21) in the AS group compared to 47% (8/17) in the MA group (P < 0.001).
  • Side effects and laboratory abnormalities were mild in both treatment groups.

Conclusions:

  • Parenteral aminosidine sulphate monotherapy is ineffective for treating mucocutaneous leishmaniasis in Peru.
  • Intravenous meglumine antimonate demonstrated significant efficacy in this patient population.
  • Further research into effective MCL treatments is warranted.

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...
Leishmaniasis01:30

Leishmaniasis

Leishmaniasis is a protozoal disease caused by species of the genus Leishmania and transmitted through the bite of infected female sandflies. The parasite exists in two principal morphological forms during its life cycle. A sandfly acquires intracellular amastigotes from an infected reservoir host, such as a dog. Within the sandfly, these forms differentiate into motile, flagellated promastigotes. During a subsequent blood meal, promastigotes are injected into the human host, where they...
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...
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.
Inhibitors of Bacterial Protein Synthesis01:25

Inhibitors of Bacterial Protein Synthesis

Aminoglycosides constitute a highly potent class of bactericidal antibiotics that exert their antimicrobial effects by targeting the bacterial ribosome, specifically disrupting protein synthesis. These polycationic molecules consist of amino-modified sugars linked via glycosidic bonds to an aminocyclitol core such as 2-deoxystreptamine or streptamine. Their strong positive charges facilitate tight binding to the negatively charged phosphate backbone of ribosomal RNA (rRNA), primarily at the 16S...
Local Anesthetics: Pharmacokinetics01:13

Local Anesthetics: Pharmacokinetics

The potency and duration of action of local anesthetics (LAs) are determined by their pharmacokinetics. Pharmacokinetics describes how LAs are absorbed, distributed, metabolized, and eliminated from the body. When administered to the vascular tissues, LAs are quickly absorbed and enter the systemic circulation, reducing their localized effects. Adding vasoconstrictors such as epinephrine to LAs reduces their absorption into the systemic circulation, making them clinically effective. The...