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1.
Perspect Public Health ; : 17579139231170784, 2023 Jun 18.
Article in English | MEDLINE | ID: mdl-37332258

ABSTRACT

AIMS: To review the barriers and facilitators that cross-sector partners face in promoting physical activity. METHODS: We searched Medline, Embase, PsychINFO, ProQuest Central, SCOPUS and SPORTDiscus to identify published records dating from 1986 to August 2021. We searched for public health interventions drawn from partnerships, where the partners worked across sectors and their shared goal was to promote or increase physical activity through partnership approaches. We used the Critical Appraisal Skills Programme UK (CASP) checklist and Risk Of Bias In Non-randomised Studies - of Interventions (ROBINS-I) tool to guide the critical appraisal of included records, and thematic analysis to summarise and synthesise the findings. RESULTS: Findings (n = 32 articles) described public health interventions (n = 19) aiming to promote physical activity through cross-sector collaboration and/or partnerships. We identified barriers, facilitators and recommendations in relation to four broad themes: approaching and selecting partners, funding, building capacity and taking joint action. CONCLUSION: Common challenges that partners face are related to allocating time and resources, and sustaining momentum. Identifying similarities and differences between partners early on and building good relationships, strong momentum and trust can take considerable time. However, these factors may be essential for fruitful collaboration. Boundary spanners in the physical activity system could help translate differences and consolidate common ground between cross-sector partners, accelerating joint leadership and introducing systems thinking. PROSPERO REGISTRATION NUMBER: CRD42020226207.

2.
Public Health ; 192: 49-55, 2021 Mar.
Article in English | MEDLINE | ID: mdl-33631514

ABSTRACT

OBJECTIVES: Arts on prescription (AoP) interventions are part of mainstream social prescribing provision in primary health care. Whilst the body of evidence for AoP interventions has been developing, this has primarily focused on well-being. STUDY DESIGN: The present work is an observational longitudinal study on a community-based AoP social prescribing intervention in the South West UK. METHOD: The present study assessed changes in anxiety, depression, and well-being in a cohort of patients participating in up to two eight-week cycles of AoP. The sample consisted of 245 individuals referred into the programme from 2017 to 2019, with a sub-sample of participants (N = 110) with identifiable multimorbidity. Outcomes were measured pre- and post-intervention at both initial and re-referral. RESULTS: Anxiety, depression, and well-being were all significantly improved after initial referral, re-referral, and overall from initial to post re-referral for this intervention in the whole sample and multimorbid sub-sample. Multivariate analyses revealed that no participant variables appeared to account for the variance in outcome change scores. CONCLUSION: The research provides further support for AoP interventions, finding associations with reduced anxiety and depression and increased well-being. Additionally, these outcomes are evidenced in those with multimorbidity, as well as across initial- and re-referral cycles.


Subject(s)
Anxiety Disorders/therapy , Anxiety/therapy , Chronic Disease/therapy , Depression/psychology , Depression/therapy , Health Promotion/methods , Prescriptions , Referral and Consultation/organization & administration , Adult , Anxiety/diagnosis , Anxiety/psychology , Anxiety Disorders/diagnosis , Anxiety Disorders/psychology , Depression/diagnosis , Female , Health Personnel , Humans , Longitudinal Studies , Male , Mental Health , Middle Aged , Multimorbidity , Primary Health Care , Treatment Outcome
4.
J Public Health (Oxf) ; 40(4): e586-e593, 2018 12 01.
Article in English | MEDLINE | ID: mdl-29688551

ABSTRACT

Background: Translational research is required to ensure exercise referral schemes (ERSs) are evidence-based and reflect local needs. This article reports process data from the co-development phase of an ERS, providing an insight into (i) factors that must be considered when translating evidence to practice in an ERS setting, and (ii) challenges and facilitators of conducting participatory research involving multiple stakeholders. Methods: An ERS was iteratively co-developed by a multidisciplinary stakeholder group (commissioners, managers, practitioners, patients and academics) via five participatory meetings and an online survey. Audio data (e.g. group discussions) and visual data (e.g. whiteboard notes) were recorded and analysed using NVivo-10 electronic software. Results: Factors to consider when translating evidence to practice in an ERS setting included (i) current ERS culture; (ii) skills, safety and accountability; and (iii) resources and capacity. The co-development process was facilitated by needs-analysis, open questions, multidisciplinary debate and reflective practice. Challenges included contrasting views, irregular attendance and (mis)perceptions of evaluation. Conclusion: The multidisciplinary co-development process highlighted cultural and pragmatic issues related to exercise referral provision, resulting in an evidence-based intervention framework designed to be implemented within existing infrastructures. Further work is required to establish the feasibility and effectiveness of the co-developed intervention in practice.


Subject(s)
Exercise , Referral and Consultation/organization & administration , Community-Based Participatory Research , Humans , Needs Assessment , Program Development , Surveys and Questionnaires , Translational Research, Biomedical
5.
J Dual Diagn ; 14(2): 102-110, 2018.
Article in English | MEDLINE | ID: mdl-29461932

ABSTRACT

BACKGROUND: Dual diagnosis covers a broad spectrum of mental health and substance misuse conditions occurring concurrently (NICE, 2016 ). Its manifestation is complex and, as such, the disorder is recognized as influencing adherence to prescribed medication and service engagement and has a worse prognosis than substance use and mental health conditions occurring independently. AIMS: To determine the effectiveness of psychoeducational group therapy in a sample of dual diagnosis patients. METHODS: Patients who met the Diagnostic and Statistical Manual of Mental Disorders-IV Axis 1 criteria for serious mental illness and current substance misuse were approached to take part in a psychoeducational program. Those who consented were assessed at baseline and end point using measures of psychiatric syptomatology, psychological well-being, and substance use patterns with the following scales: the Brief Psychiatric Rating Scale, the Hospital Anxiety and Depression Scale, the Maudsley Addiction Profile, and the Warwick-Edinburgh Mental Wellbeing Scale. RESULTS: Fifty-one patients completed the program, while 29 dropped out after initial assessment. Between baseline and follow-up, there was a decline in the number of participants using alcohol, cannabis, cocaine, amphetamine, illicit benzodiazepines and methadone. However, the number of participants using heroin remained constant. The mean amount of substances used was not reduced over the study period except in the case of alcohol. Overall improvements in syptomatology and psychological well-being were observed. DISCUSSION: Mental health services should focus on integrated approaches via multimodal treatment interventions that encapsulate harm reduction and educational initiatives. Despite the modest sample, the findings have emphasized the importance of a broad range of treatment approaches delivered within a unitary delivery system.


Subject(s)
Mental Disorders/epidemiology , Mental Disorders/therapy , Patient Education as Topic/methods , Substance-Related Disorders/epidemiology , Substance-Related Disorders/therapy , Adult , Comorbidity , Diagnosis, Dual (Psychiatry) , Female , Humans , Male , Patient Dropouts/psychology , Patient Dropouts/statistics & numerical data , Psychiatric Status Rating Scales , Psychotherapy, Group/methods , Treatment Outcome , United Kingdom/epidemiology , Young Adult
6.
J Public Health (Oxf) ; 37(2): 202-9, 2015 Jun.
Article in English | MEDLINE | ID: mdl-25922370

ABSTRACT

BACKGROUND: More evidence is needed concerning the implementation of the NHS Health Check programme in order to identify areas for improvement. The aim of the study was to investigate the way in which the Gloucestershire NHS Health Check programme care pathway was followed and interpreted compared with national programme indicators. METHODS: A cross sectional review of Gloucestershire's Health Checks was undertaken to assess programme performance via a primary care audit of key indicators within a cohort of 83 GP practices and an eligible population of 210 513. Data were assessed to compare differences between practices and to compare county data with national indicators. RESULTS: The annual programme uptake was 49.8% and a total of 1031 patients were diagnosed with cardiovascular disease (CVD). Variations in the detection of modifiable risk factors in relation to the NHS Ready Reckoner were identified: diabetes (-0.04%), CKD (-0.9%), hypertension (-19.9%); obesity (-7.1%); low physical activity (-57.7%) and smoking (-14.3%). CONCLUSIONS: Disparities in uptake and implementation of the care pathway demonstrate inconsistencies in the application of processes and knowledge. There appears to be an overestimation of CVD risk by the Ready Reckoner tool likely to be attributable to a failure to adjust for existing local early identification efforts in primary care and prevention.


Subject(s)
Cardiovascular Diseases/prevention & control , Health Promotion/organization & administration , Mass Screening/organization & administration , National Health Programs/organization & administration , Primary Health Care/organization & administration , Process Assessment, Health Care , Public Health Practice , Quality Improvement , State Medicine/organization & administration , Adult , Aged , Cardiovascular Diseases/epidemiology , Cross-Sectional Studies , England/epidemiology , Female , Health Priorities , Humans , Male , Middle Aged , Quality Indicators, Health Care , Quality of Health Care , Risk Assessment , Risk Factors
7.
J Public Health (Oxf) ; 36(4): 599-607, 2014 Dec.
Article in English | MEDLINE | ID: mdl-24365762

ABSTRACT

BACKGROUND: Within the UK context, it is unclear whether physical activity and screen time changes between completing compulsory education and the period afterwards, and the factors associated with any change. METHODS: A prospective population-based longitudinal design among adolescents (n = 2204 at baseline) was adopted. A self-report questionnaire was administered at baseline (final year of compulsory education) and follow-up (i.e. post compulsory education) to measure physical activity over the previous 7 days and screen time (weekday and weekend) in relation to recommended guidelines. Magnitude of change in physical activity and screen time and key influencing variables associated with changes were analysed. RESULTS: For physical activity, there was a significant change in participants meeting guidelines at baseline but not meeting guidelines at follow-up with 81.0% not meeting guidelines at baseline and follow-up. For screen time, there was no significant change between baseline and follow-up, with 70.6% not meeting guidelines at baseline and follow-up. Gender was associated with the change in physical activity with a decline less likely in females. CONCLUSIONS: Findings reinforce the importance of reducing physical inactivity and sedentary behaviour during this transition. Factors associated with changes in physical inactivity and sedentary behaviour need further investigation.


Subject(s)
Adolescent Behavior , Motor Activity , Sedentary Behavior , Television/statistics & numerical data , Adolescent , Adolescent Behavior/physiology , Female , Guideline Adherence , Health Policy , Humans , Logistic Models , Longitudinal Studies , Male , Motor Activity/physiology , Prospective Studies , Schools , Self Report , United Kingdom , Video Games
8.
J Psychiatr Ment Health Nurs ; 17(1): 1-8, 2010 Feb.
Article in English | MEDLINE | ID: mdl-20100301

ABSTRACT

The study investigated the place and promotion of well-being from the perspectives of services users and mental health professionals. * Data from focus groups and interviews were analysed and found that well-being promotion was available, for example weight management groups in mental health services. However, they also found that there were some contradictions between the groups of people interviewed about what was available and what to promote in the future. * The study concludes suggesting partnerships with local communities to further develop well-being services, such as opportunities for physical activity, for people with mental health problems. Abstract This study explored service users' and mental health professionals' understandings, experiences and opinions of well-being and its promotion within mental health services. A qualitative case study methodology included nine participants (five adult service users, three mental health professionals, one senior manager) who were purposively sampled from a Mental Health Trust in England. Service users participated in a focus group, while individual semi-structured interviews were held with the mental health professionals and senior manager. Interpretative phenomenological analysis of the data revealed five main themes including well-being as a holistic concept; well-being promotion; the place, promotion and position of well-being; role of mental health services in well-being promotion; and areas for further improvement. Findings revealed evidence of well-being promotion; however, there were contradictions regarding what was known between the groups of participants and what could be provided in the future. Implications for practice include the need to establish more effective partnership working between mental health services and local communities, especially in light of financial constraints within health services at large. This could assist the increased provision of therapeutic services for well-being promotion.


Subject(s)
Community Mental Health Services/trends , Health Promotion/trends , Health Services Needs and Demand/trends , Mental Disorders/nursing , Quality Assurance, Health Care/trends , Quality of Life/psychology , State Medicine/trends , Adult , Attitude of Health Personnel , Female , Focus Groups , Forecasting , Humans , Male , Mental Disorders/psychology , Middle Aged , Nurse Clinicians/trends , Patient Satisfaction , Psychiatric Nursing/trends , United Kingdom , Young Adult
9.
Health Educ Res ; 20(5): 600-11, 2005 Oct.
Article in English | MEDLINE | ID: mdl-15613491

ABSTRACT

This paper reports findings from a qualitative investigation into the relationship between physical activity and mental health from the experiences of participants on exercise referral schemes. A grounded theory methodology was adopted which used focus groups and semi-structured interviews with participants from three exercise referral schemes in England. Schemes were representative of different types within the UK, and included a local authority leisure centre, a private health club and a local authority leisure centre scheme with organized countryside hikes. Pre- and post-exercise referral intervention focus groups, and interviews with purposively sampled individuals, were undertaken. Eighteen people participated and interviews were audio-taped, transcribed and analyzed. A conceptual framework emerged, and provides a psycho-social explanation for the physical activity and mental health relationship from the perspectives of the participants' who experienced it. The explanation of the relationship from this perspective identifies the core category 'self-acceptance', and the importance and interrelationship of context-related factors (such as social support and the physical environment), for the elicitation of positive experiences for people on exercise referral schemes. Investigating participant's experiences within the social contexts of exercise referral schemes provides an understanding about whether schemes have the potential to influence the mental health of referred patients.


Subject(s)
Exercise/psychology , Mental Health , Referral and Consultation , Aged , Evaluation Studies as Topic , Female , Humans , Male , Middle Aged , United Kingdom
10.
N Z Med J ; 112(1090): 225-8, 1999 Jun 25.
Article in English | MEDLINE | ID: mdl-10448995

ABSTRACT

AIM: To determine, in insulin-treated diabetes the incidence and risk factors for severe hypoglycaemia requiring ambulance visits. METHODS: A cross-sectional, questionnaire survey was made of patients with type 1 diabetes, who received help for severe hypoglycaemia from Ambulance Association personnel, during the period 1/6/95 to 31/5/96. RESULTS: The ambulance service made 386 emergency visits to 247 persons with type 1 diabetes. Of these, 128 respondents (52%) completed a questionnaire detailing personal and diabetes history, usual diabetes care practices and hypoglycaemia management. Two or more visits for severe hypoglycaemia were made to 26.3% of patients, who reported a longer duration of diabetes than those who required only one visit (28 vs 20 years, p<0.03). Self-blood-glucose monitoring was performed by 98.4% of respondents and 66.4% self-adjusted insulin doses. Intensively treated patients (> or = 3 insulin injections daily) reported less awareness of hypoglycaemia than standard therapy patients (< or = 2 insulin injections daily) (p<0.05). Fifty-four per cent of respondents had glucagon available for emergency use, but those who lived alone and in general practitioner care only (27%) were less likely to have glucagon (p<0.05) compared to those with companions and in shared-care arrangements (62%). Hypoglycaemia management was influenced by the availability of glucagon. Oral glucose was used by 82% before injecting glucagon, whereas 40% of patients without glucagon called for the ambulance when severe symptoms were present even before initiating treatment with oral glucose. CONCLUSION: This survey determined the minimum frequency of severe hypoglycaemia requiring the ambulance at 1.6 episodes patient(-1) year(-1). Precipitating factors and a lack of coping skills and behaviours that might prevent severe hypoglycaemia and ambulance calls were identified.


Subject(s)
Diabetes Mellitus/epidemiology , Emergency Medical Services/statistics & numerical data , Hypoglycemia/epidemiology , Aged , Cross-Sectional Studies , Diabetes Mellitus/drug therapy , Female , Humans , Incidence , Insulin/therapeutic use , Male , Middle Aged , New Zealand/epidemiology , Retrospective Studies , Risk Factors
11.
Plant Mol Biol ; 38(3): 417-23, 1998 Oct.
Article in English | MEDLINE | ID: mdl-9747849

ABSTRACT

Dehydrins (LEA D11 proteins) are the products of multigene families in a number of higher plants. To date, however, only one dehydrin locus, dhn1 (a major embryo and drought-induced protein of ca. 18 kDa) has been placed on chromosome 6L of the genetic linkage map of maize. The presence of a larger, ca. 40 kDa embryo protein that is also specifically detected by anti-dehydrin antibodies had been observed in some maize inbreds, including B73, suggesting that other dhn loci may exist. The ca. 22 kDa and ca. 40 kDa immunopositive proteins were purified from B73 and their amino acid compositions determined. The two proteins' amino acid compositions are typical of dehydrins, yet they differ from each other, indicating that they are distinct dhn gene products. Different size alleles for both proteins, or presence/absence in the case of the ca. 40 kDa protein, were evident from comparisons of embryo proteins of various maize inbreds. Analysis of segregating F2 progeny derived from self-pollination of F1 hybrids from four crosses (B73 x OH43, Mo17 x A632, AHO x A632, Latente x A632) revealed that alleles of the two genes assort independently. Map positions of the two dhn loci were then determined using two maize recombinant inbred line (RIL) mapping populations. The predicted map position of the gene controlling production of the ca. 22 kDa protein confirmed that this protein is the product of the dhn1 gene. The gene encoding the ca. 40 kDa dehydrin-like protein maps to a new locus on chromosome 9S near wx1, which we have named dhn2.


Subject(s)
Genes, Plant , Plant Proteins/genetics , Zea mays/genetics , Amino Acid Sequence , Amino Acids/analysis , Chromosome Mapping , Crosses, Genetic , Molecular Sequence Data , Molecular Weight , Plant Proteins/chemistry , Plant Proteins/isolation & purification , Zea mays/chemistry , Zea mays/embryology
14.
Ann Intern Med ; 119(7 Pt 1): 545-54, 1993 Oct 01.
Article in English | MEDLINE | ID: mdl-8363164

ABSTRACT

OBJECTIVES: To determine the efficacy of psyllium in reducing serum cholesterol levels in patients on high- or low-fat diets. DESIGN: Double-blind, placebo-controlled, 16-week parallel trial. The study included an 8-week baseline period and an 8-week treatment period. PATIENTS: Healthy men and women, 21 to 70 years old, with primary hypercholesterolemia (total serum cholesterol > or = 5.7 mmol/L [220 mg/dL]). Thirty-seven participants followed a high-fat diet and 81 participants followed a low-fat diet. INTERVENTION: Participants were randomly assigned to either psyllium, 5.1 g twice a day, or placebo. MEASUREMENTS: Fasting lipid and apolipoprotein concentrations, including direct low-density lipoprotein (LDL) cholesterol quantification; nutritional analyses of 4 days of 7-day food records to monitor dietary compliance; and physical examinations, clinical chemistry and hematologic studies, and urinalysis to assess treatment safety. MAIN RESULTS: Psyllium recipients in both the high- and low-fat diet groups showed small but significant decreases (P < 0.05) in total cholesterol and low-density lipoprotein (LDL) cholesterol levels. Total cholesterol and LDL cholesterol levels decreased 5.8% and 7.2%, respectively, in psyllium recipients on high-fat diets and 4.2% and 6.4%, respectively, in psyllium recipients on low-fat diets. No significant difference was seen in LDL cholesterol response when psyllium recipients on low- and high-fat diets were compared (P > 0.2). No significant reductions in lipid levels were observed in placebo recipients. Based on the National Cholesterol Education Program LDL cholesterol classification system, 39% of the psyllium recipients improved in LDL cholesterol classification (P < 0.0001) compared with 20.3% of placebo recipients (P > 0.2). CONCLUSIONS: Psyllium produces a modest but significant improvement in total cholesterol and LDL cholesterol levels in persons on either low-fat or high-fat diets. Psyllium, when added to a prescribed low-fat diet, may obviate the need for typical lipid-lowering medications or may prove to be a valuable adjunct to other treatments in patients with moderately elevated LDL cholesterol levels.


Subject(s)
Dietary Fats/administration & dosage , Hypercholesterolemia/therapy , Psyllium/therapeutic use , Adult , Aged , Apolipoproteins B/blood , Cholesterol/blood , Cholesterol/classification , Cholesterol, LDL/blood , Combined Modality Therapy , Double-Blind Method , Female , Humans , Hypercholesterolemia/blood , Male , Middle Aged
15.
Mol Cell Endocrinol ; 95(1-2): 101-9, 1993 Sep.
Article in English | MEDLINE | ID: mdl-8243799

ABSTRACT

We report that the activity of the firefly luciferase (LUC) reporter gene is down-regulated by T3 and T3 receptor (TR) in the CV1 mammalian cell line, which is widely used for studies of TR action. Repression was highly reproducible, T3 and TR dependent, promoter independent, and observed regardless of whether an internal control for transfection efficiency was used. Cotransfections with normal and mutant TRs indicate that the negative T3 response is mediated by sequences within the LUC gene coding region, and is not due to the interaction of TR with a limiting transcription factor. Negative regulation of the LUC reporter was overcome by a strong, cis-linked T3 response element (TRE), but continued in the presence of a TRE of moderate strength. The results described here demonstrate that conclusions drawn from studies of TRE structure and activity performed using the LUC reporter in CV1 cells should be interpreted with caution.


Subject(s)
Artifacts , Fibroblasts/metabolism , Gene Expression Regulation/drug effects , Luciferases/biosynthesis , Receptors, Thyroid Hormone/physiology , Recombinant Fusion Proteins/biosynthesis , Regulatory Sequences, Nucleic Acid , Transfection , Triiodothyronine/pharmacology , Animals , Base Sequence , Cell Line , Chlorocebus aethiops , Coleoptera/genetics , Enzyme Induction/drug effects , Fibroblasts/drug effects , Genetic Vectors , Kidney , Luciferases/genetics , Molecular Sequence Data , Recombinant Fusion Proteins/genetics , Thymidine Kinase/biosynthesis , Thymidine Kinase/genetics , Transcription Factors/metabolism
17.
Mol Endocrinol ; 6(9): 1489-501, 1992 Sep.
Article in English | MEDLINE | ID: mdl-1435790

ABSTRACT

The steroid-thyroid hormone receptors bind to imperfect repeats of two or more half-sites. It is generally accepted that a T3 response element (TRE) half-site consists of a six-nucleotide core motif (5'-AGGT(C/A)A-3'). It is less widely appreciated that the nucleotides flanking this core motif also have a major influence on the affinity of T3 receptor (TR) for its response element. We analyzed TR-DNA interactions under conditions in which the affinity of receptor monomers for individual TRE half-sites of the rat GH (rGH) gene was measured. These studies avoided the effects of half-site spacing and orientation on receptor binding. Variations in the nucleotides flanking the core sequence can modulate receptor binding by more than 15-fold. Systematic mutational analysis of TRE half-site structure demonstrated that at least two nucleotides flanking either side of the half-site core motif strongly influence TR binding affinity and activity, indicating that half-sites are approximately 10 nucleotides long. Thus, the half-sites of most TREs overlap, and mutations in one half-site may affect the activity of its partner. The TRE half-site sequence 5'-CTGAGGTAACG-3' was bound with highest affinity by TRs. The negatively T3-responsive promoter of the rGH gene was used to investigate the functional significance of the nucleotides flanking the core motif in vivo. A promoter consisting of only 22 rGH nucleotides, containing two functional TRE half-sites which overlap the rGH TATA box, directed T3-inhibited transcription. Mutation of nucleotides flanking the core sequence of the weaker half-site dramatically reduced the activity of the element, demonstrating that the flanking sequences of the half-sites can profoundly affect TRE activity.


Subject(s)
Receptors, Thyroid Hormone/metabolism , Regulatory Sequences, Nucleic Acid , Triiodothyronine/pharmacology , Animals , Base Sequence , Binding Sites , Gene Expression Regulation, Neoplastic , Growth Hormone/biosynthesis , Growth Hormone/genetics , Molecular Sequence Data , Neoplasm Proteins/biosynthesis , Neoplasm Proteins/genetics , Pituitary Neoplasms/pathology , Rats , Tumor Cells, Cultured
18.
J Biol Chem ; 265(19): 10851-6, 1990 Jul 05.
Article in English | MEDLINE | ID: mdl-2358443

ABSTRACT

We report that alpha and beta type rat thyroid hormone receptors bind specifically and with high affinity to the 10-base pair sequence immediately 3' of the rat growth hormone TATA box (positions -25 to -16) in a region of the rat growth hormone promoter which can be negatively hormone responsive (nTRE). The receptors have approximately 7-fold lower affinity in vitro for the nTRE than for the thyroid hormone-responsive enhancer of the rat growth hormone gene (TRE). Proteins extracted with high salt concentration from rat pituitary cell nuclei enhance binding of the receptors to both the TRE and nTRE. A modification of the avidin-biotin complex DNA binding assay which enhances the sensitivity of the assay approximately 100-fold was used in these studies. The immediate proximity of a receptor binding site to the rat growth hormone TATA box suggests that direct interaction between receptor and TFIID (the TATA binding protein) mediates nTRE activity.


Subject(s)
DNA/metabolism , Growth Hormone/genetics , Promoter Regions, Genetic , Receptors, Thyroid Hormone/metabolism , Animals , Base Composition , Base Sequence , Binding Sites , Biotin , Electrophoresis, Polyacrylamide Gel , Enhancer Elements, Genetic , Macromolecular Substances , Molecular Sequence Data , Nuclear Proteins/pharmacology , Rats , Regulatory Sequences, Nucleic Acid , Transcription Factor TFIID , Transcription Factors/metabolism
19.
Anal Biochem ; 182(2): 289-94, 1989 Nov 01.
Article in English | MEDLINE | ID: mdl-2610346

ABSTRACT

A new method for hydrolyzing steroid conjugates (both sulfates and glucuronides conjugates) that is efficient, effective, and inexpensive is described. This method comprises incubation of the conjugates--after salting-out into ethyl acetate or elution from a C18 cartridge--with anhydrous methanolic hydrogen chloride (methanolysis) for 10 min. It has been successfully applied to our routine radioimmunoassay screening and GC/MS confirmation studies of steroids in prerace and postrace equine urine samples. Comparative GC/MS studies on entire (male horse) urine samples showed that methanolysis gave amounts of free steroids (estrone, estradiols, testosterone, estrenediols, nandrolone, androstanediols) at least as large as those obtained by solvolysis. Similar studies on urine samples from a gelding that had been administered nandrolone phenylpropionate showed that methanolysis gave larger amounts of free steroids (nandrolone, estranediols) than Helix pomatia enzymatic hydrolysis or solvolysis. Also, TLC studies on methanolysis of corticosteroid conjugates such as hydrocortisone 21-sulfate and hydrocortisone 21-phosphate showed that free corticosteroid was released in 5 min.


Subject(s)
Testosterone/analogs & derivatives , Animals , Chromatography, Thin Layer/methods , Gas Chromatography-Mass Spectrometry , Helix, Snails , Horses , Hydrolysis , Kinetics , Male , Methods , Nandrolone/pharmacology , Radioimmunoassay , Solvents , Steroids/urine , Testosterone/metabolism
20.
J Virol ; 63(10): 4172-80, 1989 Oct.
Article in English | MEDLINE | ID: mdl-2550663

ABSTRACT

Infection of baby hamster kidney cells with vesicular stomatitis virus (VSV) results in the accumulation of immature U1 and U2 small nuclear ribonucleoproteins (snRNPs) that contain precursor U RNAs and at least some of the proteins specific for U1 and U2 snRNAs but lack the Sm complex of proteins that is common to these U snRNAs. The VSV function required for this effect is not known, but direct inhibition of cellular transcription did not alter the maturation of U1 and U2 snRNPs. On the other hand, viral transcription but not viral translation was required to inhibit U1 and U2 snRNP maturation. Temperature shift experiments with the mutant G114 showed that ongoing viral transcription was necessary, but that viral mRNA was not required for this inhibition. Furthermore, the VSV function involved in the inhibition of maturation of U1 and U2 snRNPs had a small UV target size of approximately 10 to 20 nucleotides. We demonstrate that temperature-sensitive mutants of VSV can be used as a tool to initiate the assembly of snRNPs in infected cells. These results are compatible with the suggestion that perturbation of snRNP metabolism by VSV precedes and is distinct from the effect of VSV on cellular RNA synthesis, although VSV leader RNA may be involved in both these functions.


Subject(s)
Ribonucleoproteins/metabolism , Transcription, Genetic , Vesicular stomatitis Indiana virus/metabolism , Animals , Cells, Cultured , Cricetinae , RNA, Messenger/analysis , RNA, Messenger/biosynthesis , Ribonucleoproteins, Small Nuclear , Ultraviolet Rays , Vesicular stomatitis Indiana virus/pathogenicity , Vesicular stomatitis Indiana virus/radiation effects , Viral Proteins/biosynthesis
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