437 research outputs found

    Administrative evaluation : what will it take to succeed?

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    What is a leader? According to Guthrie and Reed (1991), A leader is an individual who accepts the authoritative expectations of others to responsibly guide the activities and enhance the performance of an organization. As education changes, the leadership role is taking on new dimensions. What will it take for me to become an effective educational administrator? As I look back on my coursework, the one issue that continuously appeared was the idea of establishing a vision. The key point made in each class was that to be an effective leader, an administrator needed to develop both short and long term goals

    Association between malaria exposure and Kaposi's sarcoma-associated herpes virus seropositivity in Uganda.

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    OBJECTIVE: Unlike other herpes viruses, Kaposi's sarcoma-associated herpes virus (KSHV) is not ubiquitous worldwide and is most prevalent in sub-Saharan Africa. The reasons for this are unclear. As part of a wider investigation of factors that facilitate transmission in Uganda, a high prevalence country, we examined the association between antimalaria antibodies and seropositivity against KSHV. METHODS: Antibodies against P. falciparum merozoite surface protein (PfMSP)-1, P. falciparum apical membrane antigen (PfAMA)-1 and KSHV antigens (ORF73 and K8.1) were measured in samples from 1164 mothers and 1227 children. RESULTS: Kaposi's sarcoma-associated herpes virus seroprevalence was 69% among mothers and 15% children. Among mothers, KSHV seroprevalence increased with malaria antibody titres: from 60% to 82% and from 54% to 77%, comparing those with the lowest and highest titres for PfMSP-1 and PfAMA-1, respectively (P < 0.0001). Among children, only antibodies to PfAMA-1 were significantly associated with KSHV seropositivity, (P < 0.0001). In both mothers and children, anti-ORF73 antibodies were more strongly associated with malaria antibodies than anti-K8.1 antibodies. CONCLUSION: The association between malaria exposure and KSHV seropositivity suggests that malaria is a cofactor for KSHV infection or reactivation

    Expo High School students\u27 leisure reading habits

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    One hundred twenty-eight students from Expo High School, an alternative school in Waterloo, Iowa, were interviewed to determine whether they enjoy reading, the type of material they prefer to read, and the most dominant factor limiting their recreational reading. An analysis of the data indicated that Expo students do enjoy reading during their leisure time, prefer reading fiction material, and report that time is the factor which most limits their leisure reading. Differences were found between male and female readers in the type of materials read and recommended for purchase by the school library media specialist

    Effect of praziquantel treatment of Schistosoma mansoni during pregnancy on immune responses to schistosome antigens among the offspring: results of a randomised, placebo-controlled trial.

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    BACKGROUND: Offspring of women with schistosomiasis may exhibit immune responsiveness to schistosomes due to in utero sensitisation or trans-placental transfer of antibodies. Praziquantel treatment during pregnancy boosts maternal immune responses to schistosome antigens and reduces worm burden. Effects of praziquantel treatment during pregnancy on responses among offspring are unknown. METHODS: In a trial of anthelminthic treatment during pregnancy in Uganda (ISRCTN32849447; http://www.controlled-trials.com/ISRCTN32849447/elliott), offspring of women with Schistosoma mansoni were examined for cytokine and antibody responses to schistosome worm (SWA) and egg (SEA) antigen, in cord blood and at age one year. Relationships to maternal responses and pre-treatment infection intensities were examined, and responses were compared between the offspring of women who did, or did not receive praziquantel treatment during pregnancy. RESULTS: Of 388 S. mansoni-infected women studied, samples were obtained at age one year from 215 of their infants. Stool examination for S. mansoni eggs was negative for all infants. Cord and infant samples were characterised by very low cytokine production in response to schistosome antigens with the exception of cord IL-10 responses, which were substantial. Cord and infant cytokine responses showed no association with maternal responses. As expected, cord blood levels of immunoglobulin (Ig) G to SWA and SEA were high and correlated with maternal antibodies. However, by age one year IgG levels had waned and were hardly detectable. Praziquantel treatment during pregnancy showed no effect on cytokine responses or antibodies levels to SWA or SEA either in cord blood or at age one year, except for IgG1 to SWA, which was elevated in infants of treated mothers, reflecting maternal levels. There was some evidence that maternal infection intensity was positively associated with cord blood IL-5 and IL-13 responses to SWA, and IL-5 responses to SEA, and that this association was modified by treatment with praziquantel. CONCLUSIONS: Despite strong effects on maternal infection intensity and maternal immune responses, praziquantel treatment of infected women during pregnancy had no effect on anti-schistosome immune responses among offspring by age one year. Whether the treatment will impact upon the offspring's responses on exposure to primary schistosome infection remains to be elucidated. TRIAL REGISTRATION: ISRCTN: ISRCTN32849447

    Effects of HIV infection and ART on phenotype and function of circulating monocytes, natural killer, and innate lymphoid cells.

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    HIV infection causes upregulation of markers of inflammation, immune activation and apoptosis of host adaptive, and innate immune cells particularly monocytes, natural killer (NK) and innate lymphoid cells (ILCs). Although antiretroviral therapy (ART) restores CD4 T-cell counts, the persistent aberrant activation of monocytes, NK and ILCs observed likely contributes to the incomplete recovery of T-cell effector functions. A better understanding of the effects of HIV infection and ART on the phenotype and function of circulating monocytes, NK, and ILCs is required to guide development of novel therapeutic interventions to optimize immune recovery

    Rethinking Schistosomiasis Vaccine Development:Synthetic Vesicles

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    There is currently no vaccine against schistosomiasis. With few Schistosoma vaccine candidates in clinical trials, unexplored antigens from the vulnerable schistosomulum should be considered as possible vaccine candidates. In addition, we suggest developing synthetic vesicles as a new delivery vehicle and adjuvant for immunoprophylactic schistosomula vaccine candidates

    Funcionamiento familiar y acoso escolar en estudiantes de secundaria de una Institución Educativa Pública de Cañete, 2020

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    El presente trabajo se titula funcionamiento familiar y acoso escolar en estudiantes de secundaria de una institución educativa de Cañete, 2020, tuvo como objetivo determinar la relación entre funcionamiento familiar y acoso escolar en estudiantes de secundaria. La población estuvo conformada por 75 estudiantes, la misma que represeta la muestra, y se aplicó la muestra no probabilístico; a quienes se les aplicó los cuestionarios, la variable funcionamiento familiar presenta 50 items con 8 dimensiones. Para la variable acoso escolar presenta 5 items y es unidimensional. Su metodología, investigación es básica y el diseño fue no experimental: Descriptivo - correlacional. Se muestran resultados en donde (p<0.05) y (Rho= 0.253) presentando una correlación positiva baja entre funcionamiento familiar y acosos escolar. En conclusión, cuando los niveles funcionamiento familiar no son los adecuados, tiene implicancias mayor en el acoso escolarTesi

    Circulating B-lymphocytes as potential biomarkers of tuberculosis infection activity.

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    Accurate biomarkers of Mycobacterium tuberculosis infection activity would significantly improve early diagnosis, treatment and management of M. tuberculosis infection. We hypothesised that circulating B-lymphocytes may be useful biomarkers of tuberculosis (TB) infection status in highly TB-endemic settings. Ex-vivo and in-vitro mycobacteria-specific B-cell ELISPOT assays were used to examine the plasmablast (PB) and memory B-cell (MBC) responses in the peripheral blood of adult, healthy, community controls (n = 151) and of active TB patients (n = 48) living in Uganda. Frequencies of mycobacteria-specific PBs were markedly higher in active TB patients compared to healthy controls, and, conversely, MBCs were markedly higher in the healthy controls compared to active TB patients. In addition, the community controls with evidence of latent TB infection had higher peripheral blood PB and MBC responses than those without evidence of TB infection. These data demonstrate that peripheral blood B-cell responses are differentially modulated during latent and active M. tuberculosis infection, and suggest that the PB to MBC ratio may be a useful biomarker of TB infection activity

    Age of Infection with Kaposi Sarcoma-Associated Herpesvirus and Subsequent Antibody Values Among Children in Uganda.

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    We investigated associations between Kaposi sarcoma-associated herpesvirus (KSHV) seroconversion age and KSHV antibody values in Ugandan children. Every annual delay in KSHV seroconversion age was associated with a reduction of 19% (P < 0.0001) in K8.1 and 27% (P < 0.0001) in ORF73 antibody values at 6 years of age. Early infection may be an important risk factor for KSHV pathogenesis and viral shedding in saliva, leading to transmission
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