A relatively high zoonotic trematode prevalence in Orientogalba ollula and the developmental characteristics of isolated trematodes by experimental infection in the animal model

Li, Jian; Ren, Yijing; Yang, Lei; Guo, Jiani; Chen, Haiying; Liu, Jiani; Tian, Haoqiang; Zhou, Qingan; Huang, Weiyi; Hu, Wei; Feng, Xinyu

doi:10.1186/s40249-022-01014-7

Cited by 5 publications

(4 citation statements)

References 30 publications

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“…Currently, due to the high diversity of species and indistinguishable morphology, many species have not been accurately classified and studied. Initially, (Jousson et al, 1999) proposed the use of genetic markers or restriction fragment length polymorphism for molecular identification (Jousson et 1999;Li et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

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Ultrastructural Organization of the Muscular System Body of the Trematode Schistogonimus Rarus

Chidunchi

2024

OnLine Journal of Biological Sciences

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It is known that parasitic flatworms of the class Trematoda have a unique complex life cycle, and have morphological features of adaptation, movement, and existence in the host body. Functional peculiarities of the parasitic way of life are conditioned by the developed muscular system, due to which there is movement and attachment of the snail to various organs of the host. To date, one of the main tasks of parasitology is the study of tissues and organs of parasitic worms, which can expand our ideas about the biology of trematodes and allow us to take a new look at their structure and functions. The study of the functional morphology of the trematode muscle sac allows us to elucidate the peculiarities of trematode locomotion and attachment. This article deals with the structural organization of the muscular elements of the musculocutaneous sac of the trematode Schistogonimus Rarus. On the basis of ultrastructural studies, the functional mechanisms that ensure the movement and attachment of Schistogonimus Rarus trematodes to individual organs of the host have been revealed. In addition, data were obtained on the peculiarities of the structure of individual tissues, organs, and systems. As a result of the analysis of the obtained data, it was revealed that the ultrastructural features of the muscles of the skin-muscular sack of trematodes are formed on the basis of the modification capabilities of smooth muscle cells and tissues. The results of the work can be used as a basic material for further studies on the selection of anthelmintics acting on the muscular system of trematodes, which will lead to significant effectiveness of preventive measures.

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Section: Discussionmentioning

confidence: 99%

“…Researchers in biology, ecology, and systematics are interested in the study of flatworms. One class of flatworms that contains exclusively parasitic forms is the Trematoda (Li et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Ultrastructural Organization of the Muscular System Body of the Trematode Schistogonimus Rarus

Chidunchi

2024

OnLine Journal of Biological Sciences

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“…The Trematoda class includes exclusively parasitic forms of flatworms (Li et al, 2022). In this regard, they have developed a variety of morphological and functional adaptations to a parasitic lifestyle (Fischer et al, 2017;Hoai, 2020).…”

Section: Introductionmentioning

confidence: 99%

Functional Role of Vitelline Glands and Mehlis Gland in the Process of Resistant Egg Shell Formation in Trematodes

Ualiyeva¹

2023

OnLine Journal of Biological Sciences

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The study of the functional morphology of the reproductive system of trematodes, as well as its individual parts, provides an opportunity to solve an important problem that plays a huge role in theoretical and practical terms as the directed regulation of the fecundity of endoparasites. The article is devoted to the study of the functional role of vitelline glands and Mehlis glands in the process of formation of resistant egg shells on the example of the Parastrigea robusta trematode. The functional mechanisms are revealed on the basis of histomorphological and ultrastructural studies, underlying the provision of trematode eggshell formation processes and the role of each of the mentioned departments. The sequence of appearance and maturation of shell material in the vitelline follicles during vitellogenesis has been determined. The role of the Mehlis gland is substantiated on the basis of electron microscopy methods and their functional morphological analysis of ultrastructural and micromorphological data. The obtained data reveals information on the structural and functional unity of the mechanisms underlying the formation of a resistant trematode eggshell, the role of vitelline glands, and Mehlis gland in providing a "large number of eggs". According to the results of histological and electron microscopic studies of vitelline glands and Mehlis gland of the Parastrigea robusta trematode, a general scheme of the formation of trematode eggshell was formed. As a result, the obtained knowledge on the peculiarities of the structure and maturation of the vitelline glands and Mehlis gland of Parastrigea robusta will significantly complement the knowledge on the structural features of the female reproductive system of trematodes and the fertility of endoparasites. The results of the work can be used for further research in the selection of anthelmintic agents that affect vitelline glands and Mehlis glands, which will lead to directed regulation of the fertility level of endoparasites.

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“…Foodborne trematodes cause infection in humans via the consumption of contaminated food (raw fish, crustaceans, or vegetables), and pose a significant global health threat [ 1 , 2 ]. Among these parasites, Clonorchis sinensis , also known as Opisthorchis sinensis , is responsible for clonorchiasis, a zoonotic parasitic disease that has been under-recognized but has affected approximately 35 million individuals worldwide [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Spatio-temporal disparities of Clonorchis sinensis infection in animal hosts in China: a systematic review and meta-analysis

Liu,

Tan,

Xiao

et al. 2023

Infect Dis Poverty

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Background Clonorchissinensis, one of the most important food-borne zoonotic trematodes, remains prevalent in China. Understanding its infection status in animals is crucial for controlling human clonorchiasis. Here we conducted a systematic review and meta-analysis to focus on the spatio-temporal disparities of C.sinensis infection in animals in China. Methods Data on C.sinensis prevalence in snails, the second intermediate hosts, or animal reservoirs in China were extracted from electronic databases including PubMed, Embase, Web of Science, Chinese Wanfang database, CNKI, VIP, and China Biomedical Literature database. A random-effects meta-analysis model was utilized to estimate the pooled prevalence in each of the above animal hosts. Subgroup analysis and multivariable meta-regression were performed to explore potential sources of heterogeneity across studies and compare the temporal disparity of infection rates between high and low epidemic areas. Scatter plots were used to depict the biogeographical characteristics of regions reporting C.sinensis infection in animals. Results The overall pooled prevalence of C.sinensis was 0.9% (95% CI: 0.6–1.2%) in snails, 14.2% (12.7–15.7%) in the second intermediate host, and 14.3% (11.4–17.6%) in animal reservoirs. Prevalence in low epidemic areas (with human prevalence < 1%) decreased from 0.6% (0.2–1.2%) before 1990 to 0.0% (0.0–3.6%) after 2010 in snails (P = 0.0499), from 20.3% (15.6–25.3%) to 8.8% (5.6–12.6%) in the second intermediate hosts (P = 0.0002), and from 18.3% (12.7–24.7%) to 4.7% (1.0–10.4%) in animal reservoirs. However, no similar decrease in prevalence was observed in high epidemic areas (with human prevalence ≥ 1.0%). C.sinensis infections were predominantly reported in areas with altitudes below 2346 m and annual cumulative precipitation above 345 mm and were mostly concentrated in eastern China. Conclusions There are spatio-temporal disparities in the animal infections of C.sinensis in different areas of China. Animal infections are primarily concentrated in regions with low altitude and high precipitation. The results suggest that implementing One Health-based comprehensive measures targeting both humans and animals, especially in high epidemic areas, is essential for successful eradication of C.sinensis in China.

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A relatively high zoonotic trematode prevalence in Orientogalba ollula and the developmental characteristics of isolated trematodes by experimental infection in the animal model

Cited by 5 publications

References 30 publications

Ultrastructural Organization of the Muscular System Body of the Trematode Schistogonimus Rarus

Ultrastructural Organization of the Muscular System Body of the Trematode Schistogonimus Rarus

Functional Role of Vitelline Glands and Mehlis Gland in the Process of Resistant Egg Shell Formation in Trematodes

Spatio-temporal disparities of Clonorchis sinensis infection in animal hosts in China: a systematic review and meta-analysis

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