Related Experiment Video
Updated: Aug 10, 2026

09:53
In vivo Imaging of Transgenic Leishmania Parasites in a Live Host
Published on: July 27, 2010
Canine leishmaniasis with amyloidosis
Veterinary Pathology
|January 1, 1976
Summary
A Great Dane imported from Greece was diagnosed with visceral leishmaniasis. This parasitic disease caused anemia, weight loss, and severe organ damage, including amyloidosis.
Area of Science:
- Veterinary Medicine
- Parasitology
- Canine Infectious Diseases
Background:
- Visceral leishmaniasis (VL) is a serious parasitic disease caused by Leishmania species.
- VL is endemic in several regions, including the Mediterranean basin, and can affect dogs.
- Early diagnosis and understanding the clinical presentation are crucial for effective management in canine patients.
Observation:
- A 2-year-old male Great Dane presented with clinical signs suggestive of systemic illness.
- Symptoms included anemia, diarrhea, weight loss, proteinuria, and abnormal protein levels (hyperglobulinemia).
- Diagnostic investigations revealed characteristic Leishmania species within macrophages.
Findings:
- The dog was diagnosed with visceral leishmaniasis following import from Greece.
- Necropsy findings confirmed widespread parasitic infiltration in the spleen and bone marrow.
- Severe amyloidosis affecting the spleen, liver, and kidneys was a significant concurrent finding.
Implications:
- This case highlights the importance of considering VL in dogs with compatible clinical signs, especially those with a history of travel to endemic areas.
- The co-occurrence of VL and severe amyloidosis underscores the complex pathology that can arise from parasitic infections.
- Further research into the pathogenesis and treatment of canine VL, particularly in conjunction with other systemic diseases, is warranted.
Related Concept Videos
Lysosomal Hydrolases
Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
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...
Amebiasis
Entamoeba histolytica, a protozoan parasite, is responsible for intestinal and extraintestinal amebiasis. Though a significant proportion of infections remain asymptomatic, approximately 50 million individuals annually are estimated to present with clinical disease, resulting in up to 100,000 deaths globally. The disease burden is disproportionately high in regions with lower socioeconomic status, such as parts of India, Africa, Mexico, and Latin America.Etiology and TransmissionThe infective...
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...

