Comparative characterization of microRNAs of Schistosoma japonicum from SCID mice and BALB/c mice: Clues to the regulation of parasite growth and development.

Schistosomiasis, caused by a parasite with a wide range of mammalian hosts, remains one of the most prevailing parasitic diseases in the world. While numerous studies have reported that the growth and reproduction of schistosomes in immunodeficient mice was significantly retarded, the underlying molecular mechanisms have yet to be revealed. In this study, we comparatively analyzed the microRNA expression of Schistosoma japonicum derived from SCID and BALB/c mice on the 35 day post-infection by high-throughput RNA sequencing as prominent morphological abnormalities had been observed in schistosomes from SCID mice when compared with those from BALB/c mice.

Prohibitin 1 (PHB1) controls growth and development and regulates proliferation and apoptosis in Schistosoma japonicum.

Schistosomiasis is a zoonotic parasitic disease caused by the trematode blood flukes of the genus Schistosoma. The prodigious egg output of females is the main cause of the disease in definitive hosts, while the female worm relies on continuous pairing with the male worm to fuel the growth and maturation of the reproductive organs and egg production. Prohibitin, which contains the functionally interdependent PHB1 and PHB2 subunits in human and some other species, has been proposed to participate in the cell proliferation and apoptosis regulation in mammals.

Comparative Transcriptome Analyses of Derived From SCID Mice and BALB/c Mice: Clues to the Abnormality in Parasite Growth and Development.

Schistosomiasis, caused by the parasitic flatworms called schistosomes, remains one of the most prevailing parasitic diseases in the world. The prodigious oviposition of female worms after maturity is the main driver of pathology due to infection, yet our understanding about the regulation of development and reproduction of schistosomes is limited. Here, we comparatively profiled the transcriptome of recovered from SCID and BALB/c mice, which were collected 35 days post-infection, when prominent morphological abnormalities could be observed in schistosomes from SCID mice, by performing RNA-seq analysis.

Comparative serum metabolomics between SCID mice and BALB/c mice with or without Schistosoma japonicum infection: Clues to the abnormal growth and development of schistosome in SCID mice.

The small blood flukes of genus Schistosoma, which cause one of the most prevalent and serious parasitic zoonosis schistosomiasis, are dependent on immune-related factors of their mammalian host to facilitate their growth and development, and the formation of granulomatous pathology caused by eggs deposited in host's liver and intestinal wall. Schistosome development is hampered in the mice lacking just T cells, and is even more heavily retarded in the severe combined immunodeficient (SCID) mice lacking both T and B lymphocytes. Nevertheless, it's still not clear about the underlying regulatory molecular mechanisms of schistosome growth and development by host's immune system.

Comparative Metabonomic Investigations of From SCID Mice and BALB/c Mice: Clues to Developmental Abnormality of Schistosome in the Immunodeficient Host.

The growth and development of schistosome has been affected in the immunodeficient hosts. But it remains unresolved about the molecular mechanisms involved in the development and reproduction regulation of schistosomes. This study tested and compared the metabolic profiles of the male and female worms collected from SCID mice and BALB/c mice at 5 weeks post infection using liquid chromatography tandem mass spectrometry (LC-MS/MS) platform, in which the worms from SCID mice were the investigated organisms and the worms from BALB/c mice were used as the controls.

[Investigation on intestinal nematode infections and their risk factors in Shanpo Sub-district, Jiangxia District, Wuhan City].

Objective: To investigate the infection status of intestinal nematodes and their risk factors in rural residents of Jiangxia District, Wuhan City, so as to provide the reference for the establishment of targeted prevention and control measures.

Methods: According to the requirements of cross-sectional study of the national human key parasitic diseases, the residents in Shanpo Sub-district, Jiangxia District were randomly selected as the objects for the investigation of the infection status of , hookworm and . A questionnaire survey was performed simultaneously.

Studies on the establishment of a co-culture system of lung stage Schistosoma japonicum with host cells.

Due to their role in eliciting protective Th1 cell-mediated immune responses in definitive hosts lung stage schistosomula are in the focus of intensive research. In vitro culture approaches in the past exhibited significant differences in gene expression profiles between lung stage schistosomula isolated from hosts and those cultured conventionally. Therefore, new approaches to culture schistosomula are of broad interest.

[Effects of male worm extraction on ultrastructure of cultured vitelline cells from Schistosoma japonicum].

Objective: To study the effects of male worm extraction on the proliferation and metabolic activity of cultured vitelline cells from Schistosoma japonicum.

Methods: The 28-day S. japonicum worms were harvested by perfusion.

[An easy way to purify the inclusion body protein with high purity from prokaryotic expression cells].

To clone partial ORF of SjBMP and to construct the recombinant SjBMP-pET-28a(+) plasmids, and then to transform them into the competent cells E. coli BL21 (DE3), finally a positive clone was used to be induced by IPTG. The bacterial aggregates with target protein expressed as inclusion bodies were purified by the methods of Ni(2+)-NTA affinity purification under denaturation condition and SDS-PAGE gel extraction.

[Primary culture of the cells from Oncomelania hupensis liver].

Objective: To develop a method for primary culture of cells from Oncomelania hupensis liver, and to observe the distribution of succinate dehydrogenase (SDH) and lactate dehydrogenase (LDH) in the cultured cells.

Methods: O. hupensis was anatomized to separate the liver.

[Preliminary study on primary culture of cells from Oncomelania hupensis].

Objective: To study the primary culture of cells from Oncomelania hupensis.

Methods: After washed in the sterile solution with antibiotic, the Oncomelania hupensis snails and their eggs were dissected. The soft tissue, liver, mantle and the embryo were collected and torn up respectively.

Ultrastructure of cultured cells from Schistosoma japonicum.

Ultrastructures and their dynamic changes of the cultured cells from Schistosoma japonicum were observed in the present experiments. Several types-including polygonal, round granular, deltaic fan-shaped and flagellated cells-were found in the cultures. The polygonal cells took a major ratio in the cultures from adult S.