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Biomedical subjects

J Dennis

Publications and source records attributed to J Dennis.

At least 19 recordsLinked to original sources

Media-based behavioural treatments for behavioural problems in children.

BACKGROUND: Many approaches are used to address behavioural problems in childhood including medication or, more usually, psychological treatments either directly with the child and/or his/her family. Behavioural and cognitive-behavioural interventions have been shown to be highly effective but access to these treatments is limited due to factors such as time and expense. Presenting the information parents need in order to manage these behaviour problems in booklet or other media-based format would most likely reduce the cost and increase access to these interventions. OBJECTIVES: To review the effects of media-based cognitive-behavioural therapies for any young person with a behavioural disorder (diagnosed using a recognised instrument) compared to standard care and no-treatment controls. SEARCH STRATEGY: The following electronic databases were systematically searched: CENTRAL (The Cochrane Library Issue 3, 2005), MEDLINE (1966 to August 2005), EMBASE (1980 to August 2005), PsycINFO (1887 to August 2005), CINAHL (1982 to August 2005), Biosis (1985 to August 2005) and Sociofile (1974 to August 2005). References in all selected trials were checked for other trials and experts in the field were contacted for additional information. SELECTION CRITERIA: Randomised and quasi-randomised controlled trials (e.g. trials which used sequential randomisation) of media-based behavioural treatments for behaviour problems in children. DATA COLLECTION AND ANALYSIS: Abstracts and titles of studies identified from searches of electronic databases were read to determine whether they met the inclusion criteria. Full copies of those possibly meeting these criteria from electronic or other searches were assessed by the reviewers and queries were resolved by discussion. Data were analysed using RevMan 4.2. MAIN RESULTS: Eleven studies including 943 participants were included within this review. In general, media-based therapies for behavioural disorders in children had a moderate, if variable, effect when compared with both no-treatment controls with effects sizes ranging from -0.12 (-1.65, 1.41) to -32.60 (-49.93, -15.27) and as and adjunct to medication with effect sizes ranging from -2.71 (-5.86, -0.44) to -39.55 (-75.01, -4.09). Significant improvements were made with the addition of up to two hours of therapist time. AUTHORS' CONCLUSIONS: These formats of delivering behavioural interventions for carers of children are worth considering in clinical practice. Media-based interventions may, in some cases, be enough to make clinically significant changes in a child's behaviour, and may reduce the amount of time primary care workers have to devote to each case. They can also be used as the first stage of a stepped care approach. Consequently this would increase the number of families who could possibly benefit from these types of intervention, releasing clinician time that can be reallocated to more complex cases. Media-based therapies would therefore appear to have both clinical and economic implications as regards the treatment of children with behavioural problems.

Adolescent↗

Renal allograft tolerance in DLA-identical and haploidentical dogs after nonmyeloablative conditioning and transient immunosuppression with cyclosporine and mycophenolate mofetil.

BACKGROUND: Canine models of bone marrow and renal transplantation have provided important preclinical data relevant to developing novel therapeutic protocols for hematopoietic and solid organ transplantation in human beings. Nonmyeloablative transplantation has been shown to induce stable mixed hematopoietic chimerism in normal dogs and correct the phenotype of canine pyruvate kinase deficiency and Glanzman's thrombasthenia. In this study, we investigated the potential for inducing renal allograft tolerance using a nonmyeloablative bone marrow transplantation strategy that induces mixed chimerism in DLA-identical dogs. METHODS: Reciprocal renal allografts were performed in 4 DLA-identical and 4 DLA-haploidentical dogs with nonmyeloablative conditioning (200 cGy total body irradiation [TBI]) and transient immunosuppression with cyclosporine (CSP) and mycophenolate mofetil (MMF) with and without simultaneous bone marrow transplantation. Two DLA-identical control dogs received reciprocal renal allografts without TBI or immunosuppression with CSP and MMF. Serum creatinine (Cr) concentration was monitored to assess renal allograft function. RESULTS: The renal allografts were acutely rejected in the 2 DLA-identical dogs without TBI or immunosuppression. There was long-term (>1 year) renal allograft survival as evidenced by a normal (<2.0 mg/dL) serum Cr concentration in both the DLA-identical and DLA-haploidentical dogs that underwent 200 cGy TBI and transient immunosuppression with CSP and MMF either with or without simultaneous bone marrow transplantation. CONCLUSIONS: Nonmyeloablative conditioning (200 cGy TBI) and transient immunosuppression with CSP and MMF induce renal allograft tolerance in DLA-identical and DLA-haploidentical dogs without donor/host mixed hematopoietic chimerism. These findings suggest it may be possible to induce tolerance to solid organ transplants without the need for chronic immunosuppressive therapy or stable hematopoietic chimerism in the setting of both DLA-matched and haploidentical transplants.

Animals↗

Status spongiosus of white matter in newborn Gelbvieh-cross calves.

Various forms of status spongiosus occur in neonatal cattle, the best characterized of which is due to mutations of the branched-chain alpha-keto acid dehydrogenase complex (BCKD), resulting in bovine maple syrup urine disease (MSUD, branched-chain ketoaciduria). A distinctive neurological syndrome was identified between 1998 and 2003 in 9 calves in a 250-cow stabilized Gelbvieh-Red Angus herd. Both sexes were affected (6 heifers, 3 bulls), with a low annual incidence (3 cases in 1998; no cases in 1999; 2 cases in 2000; 2 in 2001; 1 in 2002; 1 in 2003). Affected calves were born full-term, unable to stand, and had constant whole-body tremors when stimulated. Animals remained in lateral recumbency until death or euthanasia; the longest survival time was 10 days postpartum. The principal histological change in 2 affected calves was diffuse, moderately severe bilaterally symmetrical status spongiosus with Alzheimer type II cells throughout the white matter of the brain. Myelin deficits were not evident and vacuoles were due to cleaved myelin sheaths. Neither recognized mutation of MSUD was identified in the E1a subunit of BCKD in 2 affected calves, 8 dams that gave birth to affected calves, a grand-dam of 3 affected calves, or a sire of 1 calf. Amino acid analysis of serum from 1 affected calf revealed normal concentrations of branched-chain amino acids, indicating that this disease is distinct from MSUD. The genetic and biochemical basis for the disorder, provisionally named congenital status spongiosus of Gelbvieh-cross cattle, is undetermined. The pattern of inheritance was not established.

Animals↗

Wound botulism in injectors of drugs: upsurge in cases in England during 2004.

Wound infections due to Clostridium botulinum were not recognised in the UK and Republic of Ireland before 2000. C. botulinum produces a potent neurotoxin which can cause paralysis and death. In 2000 and 2001, ten cases were clinically recognised, with a further 23 in 2002, 15 in 2003 and 40 cases in 2004. All cases occurred in heroin injectors. Seventy cases occurred in England; the remainder occurred in Scotland (12 cases), Wales (2 cases) and the Republic of Ireland (4 cases). Overall, 40 (45%) of the 88 cases were laboratory confirmed by the detection of botulinum neurotoxin in serum, or by the isolation of C. botulinum from wounds. Of the 40 cases in 2004, 36 occurred in England, and of the 12 that were laboratory confirmed, 10 were due to type A. There was some geographical clustering of the cases during 2004, with most cases occurring in London and in the Yorkshire and Humberside region of northeast England.

Botulism↗

Human mesenchymal stem cells support unrelated donor hematopoietic stem cells and suppress T-cell activation.

Bone marrow-derived mesenchymal stem cells (MSCs) are known to interact with hematopoietic stem cells (HSCs) and immune cells, and represent potential cellular therapy to enhance allogeneic hematopoietic engraftment and prevent graft-versus-host disease (GVHD). We investigated the role of human MSCs in NOD-SCID mice repopulation by unrelated human hematopoietic cells and studied the immune interactions between human MSCs and unrelated donor blood cells in vitro. When hematopoietic stem cell numbers were limited, human engraftment of NOD-SCID mice was observed only after coinfusion of unrelated human MSCs, but not with coinfusion of mouse mesenchymal cell line. Unrelated human MSCs did not elicit T-cell activation in vitro and suppressed T-cell activation by Tuberculin and unrelated allogeneic lymphocytes in a dose-dependent manner. Cell-free MSC culture supernatant, mouse stromal cells and human dermal fibroblasts did not elicit this effect. These preclinical data suggest that unrelated, human bone marrow-derived, culture-expanded MSCs may improve the outcome of allogeneic transplantation by promoting hematopoietic engraftment and limiting GVHD and their therapeutic potential should be tested in clinic.

Animals↗

Cognitive behavioural interventions for sleep problems in adults aged 60+.

BACKGROUND: The prevalence of sleep problems in adulthood increases with age. While not all sleep changes are pathological in later life, severe disturbances may lead to depression, cognitive impairments, deterioration of quality of life, significant stresses for carers and increased healthcare costs. The most common treatment for sleep disorders (particularly insomnia) is pharmacological. The efficacy of non-drug interventions has been suggested to be slower than pharmacological methods, but with no risk of drug-related tolerance or dependency. Cognitive and behavioural treatments for sleep problems aim to improve sleep by changing poor sleep habits, promoting better sleep hygiene practices and by challenging negative thoughts, attitudes and beliefs about sleep. OBJECTIVES: To assess the efficacy of cognitive-behavioural interventions in improving sleep quality, duration and efficiency amongst older adults (aged 60 and above). SEARCH STRATEGY: The following databases were searched: MEDLINE (1966 - October 2001); EMBASE (1980 - January 2002), CINAHL ( 1982 - January 2002; PsychINFO 1887 to 2002; The Cochrane Library (Issue 1, 2002); National Research Register (NRR [2002]). Bibliographies of existing reviews in the area, as well as of all trial reports obtained, were searched. Experts in the field were consulted. SELECTION CRITERIA: Randomised controlled trials of cognitive behavioural treatments for primary insomnia where 80% or more of participants were over 60. Participants must have been screened to exclude those with dementia and/or depression. DATA COLLECTION AND ANALYSIS: Abstracts of studies identified in searches of electronic databases were read and assessed to determine whether they might meet the inclusion criteria. Data were analysed separately depending on whether results had been obtained subjectively or objectively. MAIN RESULTS: Six trials, including 282 participants with insomnia, examined the effectiveness of cognitive-behavioural treatments (CBT) for sleep problems in this population. The final total of participants included in the meta-analysis was 224. The data suggest a mild effect of CBT for sleep problems in older adults, best demonstrated for sleep maintenance insomnia. REVIEWER'S CONCLUSIONS: When the possible side-effects of standard treatment (hypnotics) are considered, there is an argument to be made for clinical use of cognitive-behavioural treatments. Research is needed to establish the likely predictors of success with such treatments. As it may well be the case that the treatment efficacy of cognitive-behavioural therapy itself is not durable, the provision of "top-up" sessions of CBT training to improve durability of effect are worthy of investigation.

Age Factors↗

Bright light therapy for sleep problems in adults aged 60+.

BACKGROUND: The prevalence of sleep problems in adulthood increases with age. While not all sleep changes are pathological in later life, severe disturbances may lead to depression, cognitive impairments, deterioration of quality of life, significant stresses for carers and increased healthcare costs. The most common treatment for sleep disorders (particularly insomnia) is pharmacological. The efficacy of non-drug interventions has been suggested to be slower than pharmacological methods, but with no risk of drug-related tolerance or dependency. Bright light treatment involves participants sitting in front of a "light box" which emits very high (typically 10,000 lux) fluorescent light for periods of around two hours daily. The timing of this light treatment will depend on the irregular timing of the participant's sleep pattern. OBJECTIVES: To assess the efficacy of bright light therapy in improving sleep quality (sleep timing in particular) amongst adults aged 60 and above. SEARCH STRATEGY: The following databases were searched: MEDLINE (1966 - January 2001); EMBASE (1980 - January 2001), CINAHL ( 1982 - January 2001; PsychINFO 1970 to 2001; The Cochrane Library (Issue 1, 2001); National Research Register (NRR [2001]). Bibliographies of existing reviews in the area, as well as of all trial reports obtained, were searched. Experts in the field were consulted. SELECTION CRITERIA: Randomised controlled trials of bright light therapy for primary sleep problems where 80% or more of participants were over 60. Participants must have been screened to exclude those with dementia and/or depression. DATA COLLECTION AND ANALYSIS: Abstracts of studies identified in searches of electronic databases were read and assessed to determine whether they might meet the inclusion criteria. MAIN RESULTS: Reviewers found no trials on which to base conclusions for the effectiveness of this treatment. REVIEWER'S CONCLUSIONS: When the possible side-effects of standard treatment (hypnotics) are considered, there is a reasonable argument to be made for clinical use of non-pharmacological treatments. In view of the promising results of bright light therapy in other populations with problems of sleep timing, further research into their effectiveness with older adults would seem justifiable.

Aged↗

Physical exercise for sleep problems in adults aged 60+.

BACKGROUND: The prevalence of sleep problems in adulthood increases with age. While not all sleep changes are pathological in later life, severe disturbances may lead to depression, cognitive impairments, deterioration of quality of life, significant stresses for carers and increased healthcare costs. The most common treatment for sleep disorders (particularly insomnia) is pharmacological. The efficacy of non-drug interventions has been suggested to be slower than pharmacological methods, but with no risk of drug-related tolerance or dependency. Physical exercise, taken regularly, may promote relaxation and raise core body temperature in ways that are beneficial to initiating and maintaining sleep. OBJECTIVES: To assess the efficacy of physical exercise amongst older adults (aged 60 and above). SEARCH STRATEGY: We searched: MEDLINE (1966 - October 2001); EMBASE (1980 - January 2002), CINAHL ( 1982 - January 2002; PsychINFO 1887 to 2002; The Cochrane Library (Issue 1, 2002); National Research Register (NRR [2002]). Bibliographies of existing reviews in the area, as well as of all trial reports obtained, were searched. Experts in the field were consulted. SELECTION CRITERIA: Randomised controlled trials of physical exercise for primary insomnia where 80% or more of participants were over the age of 60. Participants must have been screened to exclude those with dementia and/or depression. DATA COLLECTION AND ANALYSIS: Abstracts of studies identified in searches of electronic databases were read and assessed to determine whether they might meet the inclusion criteria. Data were analysed separately depending on whether results had been obtained subjectively or objectively. MAIN RESULTS: One trial, including 43 participants with insomnia, examined the effectiveness of exercise in a population within an elderly population. At post-treatment, sleep onset latency improved slightly for both men and women. Total sleep duration, sleep onset latency and scores on a scale of global sleep quality showed significant improvement. Improvements in sleep efficiency were not significant. In some cases improvements indicated falls to below what are usually considered pathological levels but the wide confidence intervals and small sample size indicate that these findings must be interpreted with caution. REVIEWER'S CONCLUSIONS: When the possible side-effects of standard treatment (hypnotics) are considered, there is an argument to be made for clinical use of alternative treatments in the elderly. Exercise, though not appropriate for all in this population, may enhance sleep and contribute to an increased quality of life. Research involving exercise programmes designed with the elderly in mind is needed.

Aged↗

[Mesenchymal stem cells--a new pathway for tissue engineering in reconstructive surgery].

INTRODUCTION: Mesenchymal stem cells (MSC) have the capacity to differentiate into chondrocytes with the synthesis of cartilage. This report presents the use of human adult bone marrow derived mesenchymal stem cells for tissue engineering of autologous cartilage grafts. METHODS: Human bone marrow aspirates were obtained from the iliac crest and fractionated on a Percoll gradient. The isolated hMSC were plated at 20 x 10 (6) cells per 100 mm (2) culture dish. After 21 days in culture at 37 degrees C with 5 % CO 2, the adherent multiplied MSC were trypsinized, counted, and tested for viability by trypan blue assay. The hMSCs were loaded into a sterile 15 ml polypropylene tube (0.5 Mio cells/ml) and centrifuged on the bottom of the tube at 500 g for 5 minutes. The MSC were cultivated for 3 weeks in vitro in a specific chondrogenetic medium composed of Dulbecco's Modified Eagles Medium-High Glucose supplemented with 10 ng/ml transforming growth factor-beta 1, 1 % ITS-Premix medium, 80 micro M ascorbic acid, and 100 nM dexamethasone. RESULTS: Histological and immunohistochemical studies performed after 3 weeks in three dimensional culture demonstrated the expression of cartilage specific collagen type II and X as well as proteoglycans. CONCLUSION: Human adult mesenchymal stem cells derived from bone marrow aspirates have the ability to differentiate into chondrocytes under specific culture conditions by growth factors. The use of adult mesenchymal stem cells may be a promising tool for tissue engineering of autologous cartilage grafts in reconstructive surgery in the future.

Adult↗

New cross sectional stature, weight, and head circumference references for Down's syndrome in the UK and Republic of Ireland.

AIM: To present a growth reference for children with uncomplicated Down's syndrome living in the UK and Republic of Ireland. Data are available for height and weight in the age range 0-18 years, including the first three months of life, and for head circumference in the first year. METHODS: The study sample was drawn from 16 discrete geographical areas and was representative of children age 19 years of age or less who are now living in the UK and Republic of Ireland. Multiple growth measurements for 1507 children were obtained retrospectively by case note search. Data from children with significant cardiac or other major pathology were excluded from analysis. Data from preterm babies were excluded up to age 2 years. Centile curves were constructed from 5913 selected measurements from 1089 children and were derived using Cole's LMS method. RESULTS: The resulting centiles differ substantially from those previously available in the UK, which were based on selective US data published in 1988. CONCLUSIONS: We propose that these charts should now be adopted as the standard UK/Republic of Ireland reference.

Adolescent↗

The development of an Australian national classification system for social work practice in health care.

Australian Social Work, over recent years, has been challenged to develop a standardised and accurate classification system for social work interventions. The need for such a system arose through changes in funding arrangements based on the Diagnosis Related Groups (DRGs) treated within hospitals. In Australian hospitals, the mix of DRGs treated became known as its 'casemix.' These new funding arrangements made it necessary for Social Work to classify and measure activity with each patient to ensure continuing resource allocation to social work services in hospitals. A national Casemix Network was formed under the auspice of the Australian Association of Social Workers to develop a classification system. The Network worked collaboratively with other allied health professions to produce a generic framework for professional activities and also developed a classification of social work interventions. These activity classifications have been incorporated into procedure coding in Australian hospitals. The challenges associated with casemix funding required Social Work to address a number of philosophical and methodological issues related to classification of professional activities to ensure an outcome that recognised the unique contribution of Social Work to health care.

Australia↗

Expulsions following 1000 GyneFix insertions.

CONTEXT: The GyneFix intra-uterine device has been used in our family planning service since 1997. One of the perceived advantages is its low expulsion rate, as reported by clinical trials. OBJECTIVE: To calculate expulsion rates in routine clinical use and to look at possible reasons for expulsion. DESIGN: Retrospective casenote analysis and opportunistic client consultation. SETTING: A city centre family planning clinic. PARTICIPANTS: The first 1000 GyneFix insertions. MAIN OUTCOME MEASURES: Parity of client, experience of clinician carrying out insertion, time from device insertion to expulsion. RESULTS: Overall expulsion rate was 7.6%. There was no significant difference in parity of clients experiencing expulsion. Most (4.7%) expulsions were early, occurring within 3 months of insertion. There was considerable variation in early expulsion rate from one clinician to another. Later expulsions also occurred, up to 28 months after insertion. Increasing experience of the inserting clinician led to lower rates of late expulsion. Unnoticed expulsion led to four unplanned pregnancies. CONCLUSIONS: The GyneFix expulsion rate in our service is higher than quoted in clinical trials. Early expulsions may be related to insertion technique, representing insufficient implantation of the anchoring knot into the fundal myometrium. Late expulsions also occur, often many months after insertion; the reason for these is unclear. Users should be taught to check for the presence of the thread after each menstrual period and unnoticed expulsion should be confirmed by ultrasound and abdomino-pelvic plain X-ray.

Contraception↗

Introduction of the GyneFix intra-uterine device into the UK: client satisfaction survey and casenotes review.

OBJECTIVE: To assess the first year's use with the GyneFix intra-uterine device. This has been used in Liverpool since early 1997. It is offered mainly to nulliparous women wishing to use an effective non-hormonal method and parous women who have had pain with, or expulsion of, a framed device previously. It is also used as emergency contraception. DESIGN: Retrospective study, by means of casenote review and client questionnaire. PARTICIPANTS: All GyneFix users from February 1997 to January 1998; 215 women in total. MAIN OUTCOME MEASURES: Data were extracted from casenotes to determine reasons for choice of GyneFix, parity, whether the insertion was planned or as an emergency measure, problems reported at follow-up and reasons for removal. Users were asked by questionnaire to comment on insertion procedure, menstrual or other changes since insertion and to state their overall satisfaction. RESULTS: Over half of the users (57%) were nulliparous and a quarter of insertions were for emergency contraceptive use. A third reported that insertion was 'very painful'. Half reported that their periods had become heavier since insertion, but only 8% said that they were now unmanageable. Unacceptable bleeding was the most common reason for removal. Some reported intermenstrual bleeding and dysmenorrhoea. Satisfaction with the GyneFix was high; 86% of questionnaire responders said that they would recommend it to a friend. CONCLUSION: The GyneFix is well accepted in Liverpool inappropriately selected clients, and is an effective non-hormonal method for nulliparous as well as parous women.

Contraception↗

Disrupted mitochondrial electron transport function increases expression of anti-apoptotic bcl-2 and bcl-X(L) proteins in SH-SY5Y neuroblastoma and in Parkinson disease cybrid cells through oxidative stress.

Death of dopamine neurons in Parkinson disease (PD) may arise from consequences of the complex I (C-I) defect in the mitochondrial electron transport chain (ETC). Whether cells activate programmed death (apoptosis) pathways derives, in part, from relative activities of proteins such as bcl-2 and bcl-X(L), that have anti-apoptotic actions. We studied the responses of bcl-2 and bcl-X(L) genes in pharmacologic (acute incubation with methylpyridinium (MPP+)) and mitochondrial transgenic ("cybrid") models of Parkinson disease C-I defects. MPP+ incubation increased levels of bcl-2 and bcl-X(L) proteins in native SH-SY5Y cells but not in rho(0) cells devoid of ETC activity. MPP+ increased bcl-2 mRNA levels by 40% at 8 hr. Confocal microscopic imaging showed that the intracellular distribution of immunoreactive bcl-2 was not significantly associated with mitochondrial membranes at baseline but was associated with mitochondria after 12 hr of MPP+. Immunoreactive bcl-X(L) protein was significantly and equally associated with mitochondrial membranes both at baseline and after MPP+. PD cybrids showed increased basal levels of bcl-2 and bcl-X(L) proteins, similar to the maximum levels found after MPP+ treatment of control SY5Y cells. After MPP+ exposure, bcl-2 protein levels increased in control cybrids but did not increase further in PD cybrids. Both pharmacologically generated and transgenically induced C-I inhibition increases levels of anti-apoptotic bcl proteins, possibly from increased gene transcription. Augmentation of bcl-2 and bcl-X(L) expression may delay neurodegeneration in PD.

1-Methyl-4-phenylpyridinium↗

Alexander technique for chronic asthma.

BACKGROUND: "The Alexander technique" is a taught form of physical therapy involving a series of movements designed to correct posture and bring the body into natural alignment with the object of helping it to function efficiently, and is reported to aid relaxation. Some practitioners claim benefits for those who desire greater ease and efficiency of breathing, including asthmatics. OBJECTIVES: The objective of this review was to evaluate the efficacy of the Alexander technique in people with chronic, stable asthma. SEARCH STRATEGY: The specialised register of the Cochrane Airways Group, the Cochrane Complementary Medicine Field trials register and the bibliographies of relevant articles were searched. SELECTION CRITERIA: Randomised controlled trials of Alexander technique for the improvement of the symptoms of chronic, stable asthma, comparing the treatment with either another intervention or no intervention. DATA COLLECTION AND ANALYSIS: No trials were found that met the selection criteria. REVIEWER'S CONCLUSIONS: Robust, well-designed randomised controlled trials are required in order to test claims by practitioners that AT can have a positive effect on the symptoms of chronic asthma and thereby help people with asthma to reduce medication.

Asthma↗

Sleeping with the enemy? A randomized controlled trial of a collaborative health authority/industry intervention to influence prescribing practice.

AIMS: To evaluate the effectiveness of a health authority/pharmaceutical company collaborative intervention to influence the choice of proton pump inhibitors METHODS: Randomized controlled trial, with general practices forming the unit of allocation and analysis. RESULTS: Constructive working relationships were achieved with five of six pharmaceutical companies involved. One hundred and two out of 140 practitioners in intervention group practices received at least one visit from an industry representative. There were no reports of representatives operating outside their agreed remit. Prescribing in both the intervention and control group moved towards that recommended by the guidelines but there was no difference between the groups in either the proportion of prescriptions in line with the guidelines or the overall cost. CONCLUSIONS: Health authorities can achieve professional working relationships with the pharmaceutical industry although no changes in practice attributable to the intervention are achieved. Further work is required to develop effective means to influence prescribing in line with independent guidelines especially in the context of the development of Primary Care Groups.

Drug Industry↗

School-based research: problems of access and consent.

Public schools are enticing yet intimidating places to conduct research on children and adolescents. A public school provides a large potential subject pool; however, obtaining access to that subject pool can seem impossible with all the layers of permissions that must be obtained. If the study is federally funded, additional regulations apply. This article presents practical and proven approaches to obtaining access to and approval from schools or school systems, as well as parental consent, to conduct school-based research.

Adolescent↗