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To investigate the phenotypic changes of the expression level of regulatory B cells and related molecules during the continuous infection of Echinococcus granulosus (E. granulosus) in mice and its relationship with E. granulosus infection and its immune effect. Experimental group mice were inoculated with protoscoleces suspension via intraperitoneally injection to prepare a mouse model of E. granulosus infection. Flow cytometry was used to detect the expression of regulatory B cells CD1dhiCD5+CD19hi cells and CD1dhiCD5+CD19hi IL-10+ cells in spleen and peripheral blood of mice. The expressions of IL-10 and TGF-β1 in mouse serum were detected via ELISA. The liver pathological changes in mice were observed by H&E staining; Moreover, the expressions and distribution of IL-10 and TGF-β1 in mice liver were measured through immunohistochemistry. The ELISA test results showed no significant changes in serum IL-10 and TGF-β1 levels in early infected mice. However, at the middle and late stages of infection, the levels of IL-10 and TGF-β1 in the serum of mice increased significantly (P less then 0.05). The proportion of CD1dhiCD5+CD19hiBreg cells and the proportion of CD1dhiCD5+CD19hiIL-10+Breg cells in the spleen of mice infected with E. granulosus were increased at 90 days after infection, which indicating that Breg cells proliferated in the late stage of infection. CD1dhiCD5+CD19hi regulatory B cells may be one of the causes of immunosuppression of E. granulosus infection. It is speculated that Bregs inhibitory effect may play a role by regulating the expression of cytokines and inducing the secretion of inhibitory cytokines IL-10 and TGF-β1.Diseases can play a role in species decline. Among them, haemosporidian parasites, vector-transmitted protozoan parasites, are known to constitute a risk for different avian species. However, the magnitude of haemosporidian infection in wild columbiform birds, including strongly decreasing European turtle doves, is largely unknown. We examined the prevalence and diversity of haemosporidian parasites Plasmodium, Leucocytozoon and subgenera Haemoproteus and Parahaemoproteus in six species of the order Columbiformes during breeding season and migration by applying nested PCR, one-step multiplex PCR assay and microscopy. We detected infections in 109 of the 259 screened individuals (42%), including 15 distinct haemosporidian mitochondrial cytochrome b lineages, representing five H. (Haemoproteus), two H. (Parahaemoproteus), five Leucocytozoon and three Plasmodium lineages. Five of these lineages have never been described before. We discriminated between single and mixed infections and determined host species-specific prevalence for each parasite genus. Observed differences among sampled host species are discussed with reference to behavioural characteristics, including nesting and migration strategy. Our results support previous suggestions that migratory birds have a higher prevalence and diversity of blood parasites than resident or short-distance migratory species. A phylogenetic reconstruction provided evidence for H. selleck kinase inhibitor (Haemoproteus) as well as H. (Parahaemoproteus) infections in columbiform birds. Based on microscopic examination, we quantified parasitemia, indicating the probability of negative effects on the host. This study provides a large-scale baseline description of haemosporidian infections of wild birds belonging to the order Columbiformes sampled in the northern hemisphere. The results enable the monitoring of future changes in parasite transmission areas, distribution and diversity associated with global change, posing a potential risk for declining avian species as the European turtle dove.
To investigate associations between bacterial species in the vagina in mid-trimester pregnant women from Brazil.
The vaginal microbiome in 613 subjects was identified by analysis of the V1-V3 region of bacterial 16S ribosomal RNA and the relative prevalence of individual bacteria were determined.
The bacterial species present in the greatest number of women were Lactobacillus crispatus (306 women), L. iners (298 women) and Gardnerella vaginalis (179 women). When present in the vagina, L. crispatus was the most abundant bacterium more than 85% of the time. In contrast, L. iners and G. vaginalis were most abundant in 63% and 41% of women who were positive for these microorganisms, respectively (p < 0.0001 vs. L. crispatus). The proportion of L. crispatus was negatively associated with the proportions of L. iners, L. jensenii, L. gasseri, G. vaginalis, Megasphaera, Atopobium vaginae and Prevotella (p < 0.0001). In contrast, the proportion of G. vaginalis was positively associated with levels of Megasphaera, A. vaginae and Prevotella (p < 0.0001) while L. iners proportion was unrelated to the proportion of L. jensenii, G. vaginalis, Megasphaera, A. vaginae or Prevotella.
The composition of the vaginal microbiota in mid-trimester pregnant women is influenced by the relative concentrations of L. crispatus, L. iners and G. vaginalis.
The composition of the vaginal microbiota in mid-trimester pregnant women is influenced by the relative concentrations of L. crispatus, L. iners and G. vaginalis.
Subacute sclerosing panencephalitis (SSPE) is a potentially lethal complication of measles infection. Neurological complications take years to manifest after primary viral infection of brain and can lead to blindness in some individuals.
A 13-year-old female patient with history of Bell's palsy 2 months prior, presented with rapidly progressing necrotizing retinitis in both eyes. Soon after, she was unable to walk, developed myoclonic jerks, altered sensorium and loss of bowel and bladder control. Her clinical history, CSF IgG measles antibody analysis, MRI brain and EEG findings confirmed the diagnosis of SSPE.
SSPE in our case presented as Bell's palsy and sudden painless diminution of vision due to ocular involvement, and developed full blown disease within 2 months. SSPE can present as a diagnostic challenge and warrants early identification and referral for timely diagnosis and management.
SSPE in our case presented as Bell's palsy and sudden painless diminution of vision due to ocular involvement, and developed full blown disease within 2 months.
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