The correct spelling of the parasitic worm, Schistosomum japonicum, may seem tricky at first glance. Let's break it down with the help of IPA phonetic transcription. The first syllable is pronounced as "ʃɪs," with the "sch" sound being represented by the IPA symbol for "ʃ." The second syllable is pronounced as "toe," with a long "o" sound represented by the IPA symbol for "oʊ." The final syllable is pronounced as "muhm" with a nasalized "m" sound represented by the IPA symbol for "m̃." This combination of sounds gives us the full spelling of Schistosomum japonicum.
Schistosoma japonicum is a parasitic trematode, commonly known as the Japanese schistosome. This species belongs to the genus Schistosoma and is found primarily in East Asia, particularly in China, Japan, and the Philippines. It is one of the causative agents of schistosomiasis, a neglected tropical disease affecting millions of people worldwide.
Schistosoma japonicum has a complex life cycle that involves two hosts. Freshwater snails act as intermediate hosts, where the parasite undergoes asexual reproduction, producing numerous free-swimming larvae called cercariae. These cercariae are then released into the water, where they can penetrate human skin upon contact.
Once inside the human body, the cercariae transform into schistosomula, migrate through the bloodstream, and eventually reach the liver and intestines. There, they mature into adult worms. The adult male and female worms pair and reside in the veins surrounding the intestines, where they produce eggs.
The eggs are released into the intestines and excreted in the feces, contaminating freshwater sources. If these contaminated waters are used by snails as a habitat, the life cycle of the parasite will continue. Additionally, the eggs can cause various complications in the human host, such as liver fibrosis, intestinal damage, and the development of chronic schistosomiasis.
Control and prevention of Schistosoma japonicum infection involves the interruption of the parasite's life cycle through various strategies, including mass drug administration, snail control, improved sanitation, and health education.
S. cattoi, a blood-fluke supposed to be the cause of a disease characterized by enlargement of the liver and spleen with ascites and cachexia.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "Schistosomum japonicum" is a scientific name given to a species of parasitic flatworm, specifically a blood fluke, found in Southeast Asia, primarily in China, Japan, and the Philippines. The etymology of the word is as follows:
1. Schistosomum: The term "Schistosomum" comes from the Greek words "skhistos", meaning 'split,' and "soma", meaning 'body.' This refers to the appearance of the organism since its body is elongated and narrow, appearing as if it is split.
2. Japonicum: The term "japonicum" is Latin, derived from "Japonia", which means 'Japan.' It indicates that the particular species Schistosomum japonicum was first discovered in Japan.