1,135 research outputs found
An Exploratory Study of the Level of Reflection Attained by Preservice Teachers
This exploratory study investigated the levels of reflection achieved over three quarters by graduate level preservice teachers. Levels of reflection were determined through analysis of their reflective journal entries on readings and field experiences. A repeated measures two factor ANOVA completely within design was used to systematically analyze changes in the level of reflection. Even without specific training in reflection and reflective thinking, some significant growth occurred in the levels of reflection as a result of asking preservice teachers simply to reflect. However, only one participant achieved the highest level of reflection
Using the internet to seek information about genetic and rare diseases: A case study comparing data from 2006 and 2011
BACKGROUND: The Genetic and Rare Disease Information Center (GARD) is a major provider of Web-based information on genetic and rare diseases. Little is known about the type of Web-based information individuals seek about genetic and rare diseases or their reasons for seeking. OBJECTIVE: The objective of this paper is to describe the types of Web-based information sought about genetic and rare diseases and the reasons for seeking it from GARD by examining inquiries from 2006 and 2011. METHODS: There were 278 English-language email and Web-based inquiries posed to GARD by lay individuals (ie, patients, parents, and relatives), which were randomly selected from inquiries in 2006 (n=68) and 2011 (n=210) and examined using content analysis. RESULTS: Most often in both years, individuals sought basic disease information (51/68, 75.0% and 132/210, 62.8%; P=.067) and information about treatment (17/51, 33.3% and 62/132, 47.0%; P=.095). Specifically, inquirers requested information about their disease prognosis (6/51, 11.8% and 23/132, 17.4%; P=.347) and made requests for specialists (8/68, 11.8% and 31/210, 14.8%; P=.536). In both 2006 and 2011, a substantial subset of inquirers requested information related to undiagnosed symptoms, representing 16.2% (11/68) and 11.9% (25/210; P=.362) of inquiries, respectively. Inquirers were significantly more likely to have seen a health care provider before contacting GARD (99/210, 47.1% vs 20/68, 29.4%; P=.010) and to ask about clinical research studies in 2011 than in 2006 (24/210, 11.4% vs 2/68, 2.9%; P=.037). In the 2011 data set, the majority of the inquirers were women (201/210, 95.7%). In our 2006 sample, men were the majority source of inquiries (54/68, 79.4%). CONCLUSIONS: Findings from this study indicate that lay people contacting a genetic and rare disease information center most often seek information about disease prognosis, finding a specialist, and obtaining a diagnosis for symptoms. Unique characteristics of individuals searching the Internet for genetic and rare diseases information, includes a growing interest in participating in clinical research studies and a desire to supplement or better understand information discussed during a visit with a health care provider. These efforts represent advancements in patient self-advocacy
Higher throughput quantification of neutralizing antibody to herpes simplex viruses
We report a rapid, higher throughput method for measuring neutralizing antibody to herpes simplex virus (HSV) in human sera. Clinical isolates and sera from the Herpevac Trial for Women were used in a colorimetric assay in which infection of tissue culture (lack of neutralization) was indicated by substrate metabolism by beta-galactosidase induced in the ELVIS cell line. The neutralization assay was optimized by addition of guinea pig complement, which particularly enhanced neutralizing antibody titers to HSV-2. Higher neutralizing antibody titers were also achieved using virus particles isolated from the supernatant of infected cells rather than lysate of infected cells as the source of virus. The effect of assay incubation time and incubation time with substrate were also optimized. We found that incubating with substrate until a standard optical density of 1.0 was reached permitted a better comparison among virus isolates, and achieved reliable measurement of neutralizing antibody activity. Interestingly, in contrast to results in the absence of complement, addition of complement allowed sera from HSV-2 gD-vaccinated subjects to neutralize HSV-1 and HSV-2 clinical and laboratory isolates with equal potency
IDENTIFICATION OF OCCULT CEREBRAL MICROBLEEDS IN ADULTS WITH IMMUNE THROMBOCYTOPENIA
Management of symptoms and prevention of life-threatening hemorrhage in immune thrombocytopenia (ITP) must be balanced against adverse effects of therapies. Because current treatment guidelines based on platelet count are confounded by variable bleeding phenotypes, there is a need to identify new objective markers of disease severity for treatment stratification. In this cross-sectional prospective study of 49 patients with ITP and nadir platelet counts <30 × 109/L and 18 aged-matched healthy controls, we used susceptibility-weighted magnetic resonance imaging to detect cerebral microbleeds (CMBs) as a marker of occult hemorrhage. CMBs were detected using a semiautomated method and correlated with clinical metadata using multivariate regression analysis. No CMBs were detected in health controls. In contrast, lobar CMBs were identified in 43% (21 of 49) of patients with ITP; prevalence increased with decreasing nadir platelet count (0/4, ≥15 × 109/L; 2/9, 10-14 × 109/L; 4/11, 5-9 × 109/L; 15/25 <5 × 109/L) and was associated with longer disease duration (P = 7 × 10−6), lower nadir platelet count (P = .005), lower platelet count at time of neuroimaging (P = .029), and higher organ bleeding scores (P = .028). Mucosal and skin bleeding scores, number of previous treatments, age, and sex were not associated with CMBs. Occult cerebral microhemorrhage is common in patients with moderate to severe ITP. Strong associations with ITP duration may reflect CMB accrual over time or more refractory disease. Further longitudinal studies in children and adults will allow greater understanding of the natural history and clinical and prognostic significance of CMBs
Teladorsagia circumcincta beta tubulin: the presence of the E198L polymorphism on its own is associated with benzimidazole resistance.
BACKGROUND NlmCategory: BACKGROUND content:
"Benzimidazole resistance is associated with isotype-1
\xCE\xB2-tubulin gene F200Y, E198A and F167Y SNPs. In this
study, the recently described polymorphism E198L was reported
and analysed in Teladorsagia circumcincta." - Label: METHODS
NlmCategory: METHODS content: "The benzimidazole phenotypic
resistance was measured by the faecal egg count reduction test
(FECRT) and the egg hatch test (EHT) using a discriminating dose
(DD) in 39 sheep flocks. Around 1000 larvae collected before and
after treatment were used for DNA extraction. The resistant
species identified in all flocks was T. circumcincta. The
resistance alleles frequencies were measured for F200Y and
E198A. A 371-bp fragment of the isotype-1 \xCE\xB2-tubulin gene
was analysed, including the three codons of interest, and a new
pyrosequencing assay was designed for testing E198L." - Label:
RESULTS NlmCategory: RESULTS content: "The percentage of
resistant flocks was 35% by FECRT or 26% by EHT; however, F200Y
and E198A SNPs were absent in T. circumcincta. The amplification
of a 371-bp fragment confirmed the absence of F167Y and F200Y in
6 resistant flocks. Regarding codon 198, all samples after
treatment carried a leucine (CTA). A pyrosequencing assay
analysed the allele frequencies for the first two bases at codon
198 independently, G/C and A/T. The correlation between C and T
frequencies was almost 1 (r\xE2\x80\x89=\xE2\x80\x890.929,
P\xE2\x80\x89<\xE2\x80\x890.0001) and the mean value of both
was calculated to measure the leucine frequency; this value
ranged between 10.4-80.7% before treatment, and 82.3-92.8% after
treatment. High and similar correlations were reported between
the genotypic variables (C frequency, T frequency or mean of
both frequencies) and phenotypic resistance
(r\xE2\x80\x89>\xE2\x80\x890.720,
P\xE2\x80\x89<\xE2\x80\x890.0001), although negatively
associated with the FECRT and positively with the EHT. According
to multivariate linear regression analysis, the T frequency was
the most significant variable influencing the phenotypic
resistance (FECRT or EHT; P\xE2\x80\x89<\xE2\x80\x890.0001).
In the EHT, 67.1% of the phenotypic variability is associated
with the T frequency but in the FECRT only 33.4%; therefore, the
EHT using a DD seems to detect the genotypic resistance more
accurately than the FECRT." - Label: CONCLUSIONS NlmCategory:
CONCLUSIONS content: The E198L polymorphism can confer BZ
resistance on its own in T. circumcincta
Drivers of global mangrove loss and gain in social-ecological systems
Mangrove forests store high amounts of carbon, protect communities from storms, and support fisheries. Mangroves exist in complex social-ecological systems, hence identifying socioeconomic conditions associated with decreasing losses and increasing gains remains challenging albeit important. The impact of national governance and conservation policies on mangrove conservation at the landscape-scale has not been assessed to date, nor have the interactions with local economic pressures and biophysical drivers. Here, we assess the relationship between socioeconomic and biophysical variables and mangrove change across coastal geomorphic units worldwide from 1996 to 2016. Globally, we find that drivers of loss can also be drivers of gain, and that drivers have changed over 20 years. The association with economic growth appears to have reversed, shifting from negatively impacting mangroves in the first decade to enabling mangrove expansion in the second decade. Importantly, we find that community forestry is promoting mangrove expansion, whereas conversion to agriculture and aquaculture, often occurring in protected areas, results in high loss. Sustainable development, community forestry, and co-management of protected areas are promising strategies to reverse mangrove losses, increasing the capacity of mangroves to support human-livelihoods and combat climate change
The Grizzly, February 20, 1981
SAC Approves Spring Term 1981 Allocations • SPC to Propose Journalism Seminar • USGA Announces New Officers • Grizzly Planning Satire Issue • Professional Credentials Committee Explored • Departmental Focus: Biology Department • USGA Notes • Astronomy Club Planning Open House • Music News Defends JDB • Lorelei Outcast • Alumni Office Sponsors Homecoming II • Sorority Pledging With Frats • Graterford Visit Provides New Insights • Classics Club Planning Another Trip • Special Olympics Slated for March • Athletic Department Announces Play-off Plans • Sports Profile: Greg Gifford • Basketball Team Clinches MAC Southern Division • Textile Downs Lady Hoopsters • Grapplers: 10-5-1https://digitalcommons.ursinus.edu/grizzlynews/1053/thumbnail.jp
The personal experience of parenting a child with Juvenile Huntington’s Disease: perceptions across Europe
The study reported here presents a detailed description of what it is like to parent a child with juvenile Huntington’s disease in families across four European countries. Its primary aim was to develop and extend findings from a previous UK study. The study recruited parents from four European countries: Holland, Italy, Poland and Sweden,. A secondary aim was to see the extent to which the findings from the UK study were repeated across Europe and the degree of commonality or divergence across the different countries. Fourteen parents who were the primary caregiver took part in a semistructured interview. These were analyzed using an established qualitative methodology, interpretative phenomenological analysis. Five analytic themes were derived from the analysis: the early signs of something wrong; parental understanding of juvenile Huntington’s disease; living with the disease; other people’s knowledge and understanding; and need for support. These are discussed in light of the considerable convergence between the experiences of families in the United Kingdom and elsewhere in Europe
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