Molecular characterization of Cryptosporidium spp. from children in Kolkata, India
Pradeep Das1, Seuli Saha Roy, Kakali MitraDhar
1Rajendra Memorial Research Institute of Medical Sciences, Agam Kuan, Patna 800 007, India. dasp@cal2.vsnl.net.in
Insights
Cryptosporidium causes severe diarrhea, especially in immunocompromised individuals. Molecular analysis in India revealed Cryptosporidium hominis and Cryptosporidium parvum as primary causes, indicating human-to-human transmission.
Area of Science:
- Medical Parasitology
- Molecular Biology
- Public Health
Background:
- Cryptosporidium is an intracellular parasite causing severe diarrhea in immunocompromised individuals, particularly in developing nations.
- Limited molecular characterization data exists for Cryptosporidium in India.
Purpose of the Study:
- To perform molecular characterization of Cryptosporidium parasites in diarrheic children in India.
- To identify the prevalent genotypes and transmission routes of cryptosporidiosis in the region.
Main Methods:
- Molecular characterization using PCR-restriction fragment length polymorphism (PCR-RFLP) analysis.
- Analysis of 40 positive fecal samples from diarrheic children.
Main Results:
- Identification of at least three Cryptosporidium genotypes.
- Predominant species identified were *C. hominis* (35/40 samples) and *C. parvum* (4/40 samples).
- One sample was identified as *C. felis* (1/40 samples).
Conclusions:
- The study highlights *C. hominis* as the dominant Cryptosporidium species in the studied population.
- Findings strongly suggest that anthroponotic transmission is the primary route for cryptosporidiosis in this region of India.
- This molecular data is crucial for understanding and controlling cryptosporidiosis outbreaks.
Abstract:
The intracellular parasite Cryptosporidium is responsible for severe diarrhea in immunocompromised persons in developing countries. Few studies on the characterization of the parasite in India are available. In this study, molecular characterization of the parasite from diarrheic children was carried out by PCR-restriction fragment length polymorphism analysis. At least three genotypes were identified. Out of 40 positive samples, 35 were positive for C. hominis, 4 were positive for C. parvum, and 1 was positive for C. felis. This study clearly suggests that cryptosporidiosis in this region is caused largely by anthroponotic transmission.
