987 resultados para disable library users
Resumo:
Service user involvement in social work education is now a firmly established concept in UnitedKingdom.As a result, it is common practice for service users to occupy central roles the education and training of social work students and staff in both qualifying and postqualifying programmes. This paper describes an initiative, undertaken inNorthern Ireland, which compares two methods of user involvement employed with undergraduate and postqualifying social work students. In both situations the students firstly observed discussedDVDexcerpts of narratives from people affected by cancer and secondly observed live facilitated interview with a 25-year-old male service user who shared his experiences being diagnosedwith cancer at a young age.Understanding the social work role in palliative care is crucial as all social workers, regardless of practice context, will have some degree involvement in helping individuals and families to address end-of-life care issues. paper compares the findings of evaluations from two student groups which may help inform social work educators about the effectiveness of different teaching methods used achieve meaningful and effective user involvement with seldom heard groups.
Resumo:
Helokinestatins 1–5 represent a novel family of bradykinin antagonist peptides originally isolated from the venom of the Gila Monster, Heloderma suspectum. We found that they were encoded in tandem along with a single copy of C-type natriuretic peptide (CNP), by two different but almost identical biosynthetic precursors that were cloned from a venom-derived cDNA library. Here we have applied the same strategy to the venom of a related species, the Mexican beaded lizard, Heloderma horridum. Lyophilised venom was used as a surrogate tissue to generate a cDNA library that was interrogated with primers from the previous study and for reverse phase HPLC fractionation. The structure of a single helokinestatin precursor was obtained following sequencing of 20 different clones. The open-reading frame contained 196 amino acid residues, somewhat greater than the 177–178 residues of the corresponding helokinestatin precursors in H. suspectum. The reason for this difference in size was the insertion of an additional domain of 18 amino acid residues encoding an additional copy of helokinestatin-3. Helokinestatin-6 (GPPFNPPPFVDYEPR) was a novel peptide from this precursor identified in venom HPLC fractions. A synthetic replicate of this peptide antagonised the relaxation effect of bradykinin on rat arterial smooth muscle. The novel peptide family, the helokinestatins, have been shown to be present in the venom of H. horridum and to be encoded by a single precursor of different structure to those from H. suspectum. Studies such as this reveal the naturally-selected structures of bioactive peptides that have been optimised for purpose and provide the scientist with a natural analogue library for pharmacological investigation.
Resumo:
Amphibian skin secretions are renowned as complex mixtures of bioactive peptides many of which are analogues of endogenous regulatory peptides. While skin secretions can be obtained non-invasively for peptidome analysis, parallel studies on the granular gland transcriptome required specimen sacrifice. The aim of the present study was to analyse archived skin secretions to determine the robustness of bioactive peptide precursor-encoding polyadenylated mRNAs in an attempt to extract maximum molecular information from rare samples. A range of solvated skin secretion samples were examined after lyophilisation for their potential to generate viable and comprehensive cDNA libraries based upon polyadenylated mRNA capture and amplification/cloning using appropriate commercial kits. Here we present unequivocal data that the granular gland transcriptome persists in a PCR amenable format even after storage for as long as 12 years in 0.1%(v/v) aqueous trifluoroacetic acid (TFA). We used a pooled skin secretion sample (2 ml) from the yellow-bellied toad, Bombina variegata (n = 14), containing the equivalent of 5 mg/ml of lyophilised skin secretion, that had been used in part for peptide isolation purposes in 1998 and had been stored at - 20 °C since that time. In the first cloning experiment, 12 different bombinin-like peptide precursor cDNAs were cloned encoding 17 different bombinins, the majority of which were novel. Subsequently, bombesin and bradykinin-related peptide precursor transcripts have been cloned successfully. These data illustrate the unexpected stability/longevity of the transcriptome in these secretions — a finding with implications for both this field of research and for the wider field of molecular biology.
Resumo:
The challenges that arise in respect of child abuse reports made in the context of domestic violence and/or acrimonious separation have been the subject of recent academic discussion. This paper adds a service user perspective to the debate and reports on the findings from a study conducted in the Republic of Ireland. In addition to the previously established evidence about such cases, it demonstrates the level of powerlessness and frustration experienced by families who found it difficult to have their needs heard or met. It also illustrates the very detrimental emotional impact on children and parents who frequently encountered indifference as well as insensitive and gendered responses from child protection staff. The findings indicate that mainstream statutory child protection services do not have the capacity to deal with these complex cases, and advocates the adoption of alternative approaches. Importantly, the study demonstrates the necessity to pay attention to the views of service users in developing an appropriate response.