Implementation of behaviour change training in practice amongst pharmacy professionals in primary care settings: Analysis using the COM-B model

BACKGROUND

The Pharmacy Integration Fund (PhIF) was established in England in 2016, with funded learning programmes or 'pathways' designed to support the development of clinical pharmacy practice in a range of settings. Despite pharmacy staff being well positioned to provide more clinical work, limited research has investigated behaviour change training targeted at widespread practice transformation.

OBJECTIVE(S)

To investigate implementation of PhIF learning in practice, using the COM-B model of behaviour change.

METHODS

An online survey distributed in February and October 2020 included questions on motivations for learning, confidence in target behaviours and impact of PhIF training on behaviour. The October 2020 survey also included questions exploring the effect of the COVID-19 pandemic. Quantitative data were analysed in SPSS. v.27 (IBM). Inferential statistics were used to compare between the pathways (Primary care pathways [PCP], Post-registration pathway [PRP] and Accuracy Checking Pharmacy Technician [ACPT] pathway). Free text comments were categorised and themed.

RESULTS

Three-hundred and eighty-three responses were received (49% PRP learners, 39% PCP learners and 12% ACPT learners). Learners generally had the capacity and opportunities to apply learning, and were strongly motivated to implement behaviours in practice, although learners based in community pharmacy (those on the PRP) were less likely to report receiving employer support. Enhanced knowledge/skills (capacity) were more commonly reported than change to patient-facing activities, leading clinical services and conducting medication reviews with patients with complex needs (clinical practice behaviours targeted by the pathways). The COVID-19 pandemic heightened barriers to implementing practice change.

CONCLUSIONS

Implementation of a range of clinical practice behaviours following at scale training appears to have been largely successful. Despite this, the community pharmacy context, where funded service opportunities may be lacking, continues to present challenges to workforce transformation plans. More work is needed to understand how training can be implemented to promote practice change for pharmacy professionals in all settings.

Emerging small molecule antivirals may fit neatly into COVID-19 treatment

Numerous treatments exist for COVID-19, the illness caused by SARS-CoV-2 virus, although most are not well established; among these are several small molecule antiviral agents. Intravenous remdesivir is an established treatment worldwide for inpatients and in some countries is also available for use in non-hospitalised high risk patients to prevent progression to severe disease and hospitalization. Oral molnupiravir and oral nirmatrelvir-ritonavir are also available in several countries to prevent progression to severe disease and hospitalization for high-risk outpatients. Many other antiviral small molecules that may have therapeutic potential are under investigation in clinical trials. This article provides a summary of key molecular targets, pharmacology and preliminary data on the efficacy and safety of small molecule antiviral agents being investigated for the treatment of COVID-19.

COVID-19: State of the Vaccination

The emergence of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and the resulting coronavirus disease 2019 (COVID-19) pandemic has led to rapid vaccine development and emergency use (EU) rollout. Six vaccines, including two using novel mRNA technology, are EU-listed by the World Health Organisation, and promising published trial data are available for nine more. While efficacy is good, there are various barriers to their global use. Long-term safety and immunogenicity data are being collected along the way.

Identical and Nonidentical Twins: Risk and Factors Involved in Development of Islet Autoimmunity and Type 1 Diabetes

OBJECTIVE

There are variable reports of risk of concordance for progression to islet autoantibodies and type 1 diabetes in identical twins after one twin is diagnosed. We examined development of positive autoantibodies and type 1 diabetes and the effects of genetic factors and common environment on autoantibody positivity in identical twins, nonidentical twins, and full siblings.

RESEARCH DESIGN AND METHODS

Subjects from the TrialNet Pathway to Prevention Study (N = 48,026) were screened from 2004 to 2015 for islet autoantibodies (GAD antibody [GADA], insulinoma-associated antigen 2 [IA-2A], and autoantibodies against insulin [IAA]). Of these subjects, 17,226 (157 identical twins, 283 nonidentical twins, and 16,786 full siblings) were followed for autoantibody positivity or type 1 diabetes for a median of 2.1 years.

RESULTS

At screening, identical twins were more likely to have positive GADA, IA-2A, and IAA than nonidentical twins or full siblings (all P < 0.0001). Younger age, male sex, and genetic factors were significant factors for expression of IA-2A, IAA, one or more positive autoantibodies, and two or more positive autoantibodies (all P ≤ 0.03). Initially autoantibody-positive identical twins had a 69% risk of diabetes by 3 years compared with 1.5% for initially autoantibody-negative identical twins. In nonidentical twins, type 1 diabetes risk by 3 years was 72% for initially multiple autoantibody-positive, 13% for single autoantibody-positive, and 0% for initially autoantibody-negative nonidentical twins. Full siblings had a 3-year type 1 diabetes risk of 47% for multiple autoantibody-positive, 12% for single autoantibody-positive, and 0.5% for initially autoantibody-negative subjects.

CONCLUSIONS

Risk of type 1 diabetes at 3 years is high for initially multiple and single autoantibody-positive identical twins and multiple autoantibody-positive nonidentical twins. Genetic predisposition, age, and male sex are significant risk factors for development of positive autoantibodies in twins.

A Type 1 Diabetes Genetic Risk Score Predicts Progression of Islet Autoimmunity and Development of Type 1 Diabetes in Individuals at Risk

OBJECTIVE

We tested the ability of a type 1 diabetes (T1D) genetic risk score (GRS) to predict progression of islet autoimmunity and T1D in at-risk individuals.

RESEARCH DESIGN AND METHODS

We studied the 1,244 TrialNet Pathway to Prevention study participants (T1D patients' relatives without diabetes and with one or more positive autoantibodies) who were genotyped with Illumina ImmunoChip (median [range] age at initial autoantibody determination 11.1 years [1.2-51.8], 48% male, 80.5% non-Hispanic white, median follow-up 5.4 years). Of 291 participants with a single positive autoantibody at screening, 157 converted to multiple autoantibody positivity and 55 developed diabetes. Of 953 participants with multiple positive autoantibodies at screening, 419 developed diabetes. We calculated the T1D GRS from 30 T1D-associated single nucleotide polymorphisms. We used multivariable Cox regression models, time-dependent receiver operating characteristic curves, and area under the curve (AUC) measures to evaluate prognostic utility of T1D GRS, age, sex, Diabetes Prevention Trial-Type 1 (DPT-1) Risk Score, positive autoantibody number or type, HLA DR3/DR4-DQ8 status, and race/ethnicity. We used recursive partitioning analyses to identify cut points in continuous variables.

RESULTS

Higher T1D GRS significantly increased the rate of progression to T1D adjusting for DPT-1 Risk Score, age, number of positive autoantibodies, sex, and ethnicity (hazard ratio [HR] 1.29 for a 0.05 increase, 95% CI 1.06-1.6; P = 0.011). Progression to T1D was best predicted by a combined model with GRS, number of positive autoantibodies, DPT-1 Risk Score, and age (7-year time-integrated AUC = 0.79, 5-year AUC = 0.73). Higher GRS was significantly associated with increased progression rate from single to multiple positive autoantibodies after adjusting for age, autoantibody type, ethnicity, and sex (HR 2.27 for GRS >0.295, 95% CI 1.47-3.51; P = 0.0002).

CONCLUSIONS

The T1D GRS independently predicts progression to T1D and improves prediction along T1D stages in autoantibody-positive relatives.

11 Beta-hydroxysteroid dehydrogenase type 1 regulates synovitis, joint destruction, and systemic bone loss in chronic polyarthritis

OBJECTIVE

In rheumatoid arthritis, the enzyme 11 beta-hydroxysteroid dehydrogenase type 1 (11β-HSD1) is highly expressed at sites of inflammation, where it converts inactive glucocorticoids (GC) to their active counterparts. In conditions of GC excess it has been shown to be a critical regulator of muscle wasting and bone loss. Here we examine the contribution of 11β-HSD1 to the pathology of persistent chronic inflammatory disease.

METHODS

To determine the contribution of 11β-HSD1 to joint inflammation, destruction and systemic bone loss associated with persistent inflammatory arthritis, we generated mice with global and mesenchymal specific 11β-HSD1 deletions in the TNF-transgenic (TNF-tg) model of chronic polyarthritis. Disease severity was determined by clinical scoring. Histology was assessed in formalin fixed sections and fluorescence-activated cell sorting (FACS) analysis of synovial tissue was performed. Local and systemic bone loss were measured by micro computed tomography (micro-CT). Measures of inflammation and bone metabolism were assessed in serum and in tibia mRNA.

RESULTS

Global deletion of 11β-HSD1 drove an enhanced inflammatory phenotype, characterised by florid synovitis, joint destruction and systemic bone loss. This was associated with increased pannus invasion into subchondral bone, a marked polarisation towards pro-inflammatory M1 macrophages at sites of inflammation and increased osteoclast numbers. Targeted mesenchymal deletion of 11β-HSD1 failed to recapitulate this phenotype suggesting that 11β-HSD1 within leukocytes mediate its protective actions in vivo.

CONCLUSIONS

We demonstrate a fundamental role for 11β-HSD1 in the suppression of synovitis, joint destruction, and systemic bone loss. Whilst a role for 11β-HSD1 inhibitors has been proposed for metabolic complications in inflammatory diseases, our study suggests that this approach would greatly exacerbate disease severity.

Lack of evidence on mental health and well-being impacts of individual-level interventions for vulnerable adolescents: systematic mapping review

OBJECTIVES

To review empirical evaluations of individual-level interventions intended to improve mental health or well-being for vulnerable adolescents.

STUDY DESIGN

This is a systematic mapping review.

METHODS

Thirteen databases covering academic and gray literature were searched for published reviews and randomised controlled trials, and gray literature (2005-2016) and the results quality-assessed to prioritise best available evidence. We aimed to identify well-conducted systematic reviews and trials that evaluated individual-level interventions, for mental health/well-being outcomes, where the population was adolescents aged 10-24 years in any of 12 vulnerable groups at high risk of poor health outcomes (e.g. homeless, offenders, 'looked after', carers).

RESULTS

Thirty systematic reviews and 16 additional trials were identified. There was insufficient evidence to identify promising individual-level interventions that improve the mental health/well-being of any of the vulnerable groups.

CONCLUSIONS

Despite Western policy to promote health and well-being among vulnerable young people, the dearth of evidence suggests a lack of interest in evaluating interventions targeting these groups in respect of their mental health/well-being outcomes.

Impact of providing patients with copies of their medical correspondence: a randomised controlled study

BACKGROUND

In Australia, correspondence is routinely sent to general practitioners following a specialist consultation. Written communication is an important way to enhance patient experiences and understanding, yet most patients do not receive copies of their medical correspondence.

AIMS

To determine whether providing clinic correspondence and endoscopy reports to patients leads to improved understanding, satisfaction or anxiety.

METHODS

This is a prospective, randomised controlled study conducted at an Australian tertiary hospital from October 2013 to February 2015. New adult referrals to the general gastroenterology clinic requiring an urgent endoscopic procedure were eligible for the study. The intervention group received a copy of their clinic correspondence and endoscopy report, while the control group received neither. Participants completed questionnaires, including visual analogue scales and the Hospital Anxiety and Depression Scale, at three time points. Primary outcomes were patient understanding, anxiety and satisfaction.

RESULTS

A total of 70 participants was included in the study. There was no reduction in anxiety levels (P = 0.52), no increase in understanding (P = 0.73) or any increase in satisfaction (P = 0.33) in participants receiving correspondence. However, 97% of participants indicated that they wished to receive correspondence in the future, and 94% of participants in the correspondence group reported that receiving correspondence had helped them to understand their medical condition.

CONCLUSION

Patients wish to receive copies of their correspondence and feel it improves their understanding of their medical condition. Although we were unable to demonstrate a measurable reduction in anxiety, increase in understanding or satisfaction, we recommend that patients be offered the choice of receiving copies of their clinic correspondence and endoscopy reports.

Gene expression profile in cardiovascular disease and preeclampsia: a meta-analysis of the transcriptome based on raw data from human studies deposited in Gene Expression Omnibus

INTRODUCTION

Cardiovascular disease (CVD) and preeclampsia (PE) share common clinical features. We aimed to identify common transcriptomic signatures involved in CVD and PE in humans.

METHODS

Meta-analysis of individual raw microarray data deposited in GEO, obtained from blood samples of patients with CVD versus controls and placental samples from women with PE versus healthy women with uncomplicated pregnancies. Annotation of cases versus control samples was taken directly from the microarray documentation. Genes that showed a significant differential expression in the majority of experiments were selected for subsequent analysis. Hypergeometric gene list analysis was performed using Bioconductor GOstats package. Bioinformatic analysis was performed in PANTHER.

RESULTS

Seven studies in CVD and 5 studies in PE were eligible for meta-analysis. A total of 181 genes were found to be differentially expressed in microarray studies investigating gene expression in blood samples obtained from patients with CVD compared to controls and 925 genes were differentially expressed between preeclamptic and healthy placentas. Among these differentially expressed genes, 22 were common between CVD and PE.

DISCUSSION

Bioinformatic analysis of these genes revealed oxidative stress, p-53 pathway feedback, inflammation mediated by chemokines and cytokines, interleukin signaling, B-cell activation, PDGF signaling, Wnt signaling, integrin signaling and Alzheimer disease pathways to be involved in the pathophysiology of both CVD and PE. Metabolism, development, response to stimulus, immune response and cell communication were the associated biologic processes in both conditions. Gene set enrichment analysis showed the following overlapping pathways between CVD and PE: TGF-β-signaling, apoptosis, graft-versus-host disease, allograft rejection, chemokine signaling, steroid hormone synthesis, type I and II diabetes mellitus, VEGF signaling, pathways in cancer, GNRH signaling, Huntingtons disease and Notch signaling.

CONCLUSION

CVD and PE share same common traits in their gene expression profile indicating common pathways in their pathophysiology.

Exenatide and sitagliptin are not associated with increased risk of acute renal failure: a retrospective claims analysis

AIM

This study evaluated whether the risk of acute renal failure (ARF) increases with exenatide and sitagliptin use.

METHODS

A retrospective cohort study of a large medical and pharmacy claims database was performed. Data for 4 91 539 patients were analysed. Cox proportional hazard models were used to compare the risk of ARF between diabetic and non-diabetic subjects and between diabetic patients treated with exenatide, sitagliptin and control medications.

RESULTS

Adjusted Cox analyses showed diabetic subjects had a higher risk of ARF [HR 1.51, confidence interval (CI) 1.26-1.81, p < 0.001] than non-diabetic controls. Compared with diabetic controls, neither exenatide (HR 0.77, CI 0.42-1.41, p = 0.40) nor sitagliptin (HR 1.17, CI 0.82-1.65, p = 0.39) increased the risk of ARF.

CONCLUSION

Our study revealed an increased incidence of ARF in diabetic versus non-diabetic patients but no association between use of exenatide or sitagliptin and ARF. Because of the limitations of this observational analysis, we cannot exclude the possibility of a very small increased risk.

Parenting interventions for male young offenders: a review of the evidence on what works

Approximately one in four incarcerated male young offenders in the UK is an actual or expectant father. This paper reviews evidence on the effectiveness of parenting interventions for male young offenders. We conducted systematic searches across 20 databases and consulted experts. Twelve relevant evaluations were identified: 10 from the UK, of programmes for incarcerated young offenders, and two from the US, of programmes for young parolees. None used experimental methods or included a comparison group. They suggest that participants like the courses, find them useful, and the interventions may improve knowledge about, and attitudes to, parenting. Future interventions should incorporate elements of promising parenting interventions with young fathers in the community, for example, and/or with older incarcerated parents. Young offender fathers have specific developmental, rehabilitative, and contextual needs. Future evaluations should collect longer-term behavioural parent and child outcome data and should use comparison groups and, ideally, randomization.

Association between circulating hemostatic measures and dementia or cognitive impairment: systematic review and meta-analyzes

BACKGROUND AND OBJECTIVES

Hemostasis and thrombosis may be important contributors to cognitive decline and dementia. Certain blood markers may assist in diagnosis or management.

OBJECTIVES

To collate evidence for the association of circulating hemostatic variables and dementia or cognitive impairment.

METHODS

A systematic review of studies describing blood markers of hemostatic function and cognition/dementia. Abstracts were reviewed by two independent assessors and studies selected based on pre-specified criteria. We described methodological quality and performed meta-analyzes where data allowed.

RESULTS

From 7103 titles, 485 abstracts and included 21 studies (n = 32,773) were assessed. In two longitudinal studies, the incident of vascular dementia risk was greater for higher D-dimer [hazard ratio (HR): 1.50, 95% confidence interval (CI): 1.15-1.96]. For case-control data, we calculated standardized mean differences (SMD) and 95% CI. Higher levels of: factor (F)VII (SMD: 0.93; 95% CI: 0.60-1.26), fibrinogen (SMD: 1.53; 95% CI: 1.17-1.87), prothrombin fragment 1 and 2 (SMD: 0.64; 95% CI: 0.32-0.96), plasminogen activator inhibitor (SMD: 0.68; 95% CI: 0.26-1.10), D-dimer (SMD: 2.00; 95% CI: 1.59-2.40) and von Willebrand factor (VWF) (SMD: 1.68; 95% CI: 1.30-2.06) showed modest but significant associations with vascular dementia. For patients with any dementia diagnosis, associations were with higher D-dimer (SMD: 0.36; 95% CI: 0.15-0.56) and VWF (SMD: 0.31; 95% CI: 0.11-0.51). For specific cognitive domains, significant (P < 0.001) positive correlations were fibrinogen and speed of processing (0.76; 95% CI: 0.67-0.84), verbal memory (0.69; 95% CI: 0.59-0.79) and non-verbal reasoning (0.57; 95% CI: 0.49-0.65).

CONCLUSIONS

The present results suggest a modest association between hemostasis and vascular dementia including increased levels of thrombin generation markers (D-dimer and prothrombin fragment 1 + 2) and endothelial dysfunction (VWF and plasminogen activator inhibitor). Associations are weaker for specific cognitive tests and when all dementias are combined.

Darunavir: in the treatment of HIV-1 infection

Darunavir (TMC114) is a nonpeptidic peptidomimetic HIV protease inhibitor (PI), with a high binding affinity and a close fit within the substrate envelope. Darunavir shows potent in vitro activity against a broad range of clinical isolates of HIV type 1 (HIV-1), including those with decreased susceptibility to most available PIs. The bioavailability of oral darunavir is increased when it is coadministered in combination with low-dose (100mg) ritonavir. In the POWER 1 and POWER 2 trials, two 144-week randomised phase IIb trails, a reduction in plasma HIV-1 RNA levels of > or = 1 log10 copies/mL (primary endpoint) occurred in 77% and 62% of treatment-experienced recipients of darunavir plus ritonavir (darunavir/ritonavir) 600mg/100mg twice daily (in combination with an optimised background regimen) [vs 25% and 14% of control PI (CPI) recipients; p < 0.001] at week 24. Results are from primary analyses (n = 301 and 201). In a pooled subgroup analysis of data from the POWER 1 and 2 trials, reductions in HIV-1 RNA levels of > or = 1 log10 copies/mL were achieved in 61% of patients treated with darunavir/ritonavir 600mg/100mg twice daily verus 15% of CPI recipients (p < 0.0001) at week 48. Darunavir/ritonavir 600mg/100mg was generally well tolerated in the POWER 1 and 2 trials, with a tolerability profile similar to that of comparator CPIs.

Drospirenone/ethinylestradiol 3mg/20microg (24/4 day regimen): a review of its use in contraception, premenstrual dysphoric disorder and moderate acne vulgaris

Drospirenone 3mg with ethinylestradiol 20microg (Yaz) is a low-dose combined oral contraceptive (COC) administered in a regimen of 24 days of active tablets followed by a short hormone-free interval (4 days; 24/4 regimen). Drospirenone, unlike other synthetic progestogens used in COCs, is a 17alpha-spirolactone derivative and a 17alpha-spironolactone analogue with antimineralocorticoid and antiandrogenic properties. Drospirenone/ethinylestradiol 3mg/20microg (24/4) is approved in the US for the prevention of pregnancy in women, for the treatment of the symptoms of premenstrual dysphoric disorder (PMDD) and for the treatment of moderate acne vulgaris in women who wish to use an oral contraceptive for contraception.Drospirenone/ethinylestradiol 3mg/20microg (24/4) provided 99% contraceptive protection over 1 year of treatment in two large studies. The same treatment regimen over three treatment cycles also significantly improved the emotional and physical symptoms associated with PMDD, and improved moderate acne vulgaris over six treatment cycles in double-blind trials. It was generally well tolerated, with adverse events generally typical of those experienced with other COCs and which were most likely to occur in the first few cycles. Clinical trials indicate that drospirenone/ethinylestradiol 3mg/20microg (24/4) is a good long-term contraceptive option, and additionally offers relief of symptoms that characterise PMDD and has a favourable effect on moderate acne vulgaris.

An initial evaluation of virtual reality simulation in teaching pre-clinical operative dentistry in a UK setting

The use of virtual reality (VR) training in dentistry is a recent innovation and little research has been conducted to evaluate its use. For each preclinical exercise carried out the VR software currently records a final mark for the procedure, the time taken to complete the procedure and the number of 'internal' assessments carried out by the student. The aims of this study were two fold; a critical appraisal of the software by the students using a structured feedback together with an assessment of any link between the preparation time, final mark and number of evaluations. Sixteen 2nd year undergraduate dental students spent 6 hours cutting an unlimited number of Class I cavities and Class II cavities. The final mark awarded by the VR software together with the overall preparation time and number of evaluations for each cavity were recorded. For the Class I cavity the mean mark obtained was 66.8, the mean preparation time was 12.5 mins and the mean number of evaluations was 6.7. For the Class II cavity the mean mark was 26.5, the mean preparation time was 18 mins and the mean number of evaluations was 7.0. Final marks were also stratified into quartiles (0-24, 25-49, 50- 74, 75-100). For the Class II cavity the time taken to complete the cavity and the number of evaluations made were greater for those cavities that gained a mark of 50 or more. In conclusion, this initial evaluation of the DentSim VR package was a generally positive undergraduate educational experience. The class II cavity was more difficult to cut than the class I which was reflected in the mean scores. There was also a trend towards higher marks being associated with longer preparation times and more evaluations during the preparation.

Moxonidine: a review of its use in essential hypertension

Moxonidine (Physiotens, Moxon, Cynt) is an orally administered imidazoline compound with selective agonist activity at imidazoline I1 receptors and only minor activity at alpha2-adrenoceptors. Moxonidine acts centrally to reduce peripheral sympathetic activity, thus decreasing peripheral vascular resistance. In patients with mild to moderate hypertension, moxonidine reduces blood pressure (BP) as effectively as most first-line antihypertensives when used as monotherapy and is also an effective adjunctive therapy in combination with other antihypertensive agents. It improves the metabolic profile in patients with hypertension and diabetes mellitus or impaired glucose tolerance, is well tolerated, has a low potential for drug interactions and may be administered once daily in most patients. Thus, moxonidine is a good option in the treatment of patients with mild to moderate hypertension, particularly as adjunctive therapy in patients with the metabolic syndrome.

0.4% nitroglycerin ointment : in the treatment of chronic anal fissure pain

0.4% Nitroglycerin ointment is an intra-anal formulation of nitroglycerin (glyceryl trinitrate) indicated for the treatment of chronic anal fissure pain.black triangle Nitroglycerin is a nitric oxide (NO) donor, which reduces the increased anal canal pressure caused by a hypertonic internal anal sphincter, improving anodermal blood flow. A twice-daily 375 mg application of 0.4% nitroglycerin ointment, delivering a daily nitroglycerin dose of 3mg, significantly increased the rate of decrease in mean visual-analogue-scale pain scores, recorded daily, versus placebo (actual vehicle) over the first 3 and 8 weeks of treatment in patients with chronic anal fissure pain participating in randomised double-blind trials. Most recipients of 0.4% nitroglycerin ointment experienced headache, which was transient but severe in 20-25% of patients in randomised double-blind trials; however, compliance was generally good with few study withdrawals. Features and properties of 0.4% nitroglycerin (Rectogesic) rectal ointment Indication Pain associated with chronic anal fissures Mechanism of action Donor of nitric oxide Mediates relaxation of internal anal sphincter Dosage and administration Dosage 375 mg of 0.4% nitroglycerin rectal ointment, delivering nitroglycerin 1.5 mg Frequency Twice daily Route of administration Intra-anal Pharmacokinetic profile Mean bioavailability (0.2% nitroglycerin ointment, 0.75 mg nitroglycerin dose)50%Maximum plasma concentration 0.1 to >1 microg/L Volume of distribution approximate, equals 3 L/kg Clearance approximate, equals 1 L/kg/min Elimination half-life approximate, equals 3 min Most common adverse event Headache.

Docetaxel: a review of its use in metastatic breast cancer

Docetaxel (Taxotere), a cytotoxic taxane, is an antimicrotubule agent effective in the treatment of patients with breast cancer. The clinical profile of docetaxel as an effective cytotoxic agent in the treatment of metastatic breast cancer is well established. As yet, no single standard regimen has been identified as optimal for the treatment of patients with metastatic breast cancer after failure of prior chemotherapy. However, the efficacy of docetaxel monotherapy administered every 3 weeks as a 1-hour infusion is similar to or better than that of doxorubicin, paclitaxel and fluorouracil plus vinorelbine, and better than that of methotrexate plus fluorouracil or mitomycin plus vinblastine. Although docetaxel is associated with neutropenia and other adverse events, its overall tolerability profile is generally acceptable in the majority of patients. Docetaxel, therefore, is an effective option in the treatment of patients with metastatic breast cancer after failure of prior chemotherapy.

Gemtuzumab ozogamicin: a review of its use in acute myeloid leukaemia

Gemtuzumab ozogamicin (Mylotarg) is a conjugate of a monoclonal antibody and calicheamicin, which targets the membrane antigen CD33 in CD33-positive acute myeloid leukaemia (AML) and, after cell internalisation, releases a derivative of the cytotoxic calicheamicin component. In the US, it is approved as monotherapy in patients aged > or =60 years with a first relapse of AML who are ineligible for other cytotoxic therapy. Monotherapy with gemtuzumab ozogamicin results in complete remission (CR) or CR with incomplete platelet recovery (CRp) in approximately =25% of adults (including those aged > or =60 years) with CD33-positive AML in first relapse. Preliminary data indicate a potential role for gemtuzumab ozogamicin as a component of induction or consolidation regimens in adults and, based on an early study, in the treatment of children with AML, although randomised, controlled studies are needed. Serious adverse events, notably hepatotoxicity, characterise its tolerability profile, but gemtuzumab ozogamicin is comparatively well tolerated by most patients. Gemtuzumab ozogamicin is a valuable new treatment option for patients aged > or =60 years with CD33-positive AML in first relapse for whom other cytotoxic chemotherapy is not considered appropriate; patients with a first CR (CR1) of >12 months are likely to have the best outcome.

Spotlight on Gemtuzumab Ozogamicin in Acute Myeloid Leukaemia1

Gemtuzumab ozogamicin (Mylotarg) is a conjugate of a monoclonal antibody and calicheamicin, which targets the membrane antigen CD33 in CD33-positive acute myeloid leukaemia (AML) and, after cell internalization, releases a derivative of the cytotoxic calicheamicin component. In the US, it is approved as monotherapy in patients aged>or=60 years with a first relapse of AML who are ineligible for other cytotoxic therapy. Monotherapy with gemtuzumab ozogamicin results in complete remission (CR) or CR with incomplete platelet recovery (CRp) in approximate, equals 25% of adults (including those aged>or=60 years) with CD33-positive AML in first relapse. Preliminary data indicate a potential role for gemtuzumab ozogamicin as a component of induction or consolidation regimens in adults and, based on an early study, in the treatment of children with AML, although randomized, controlled studies are needed. Serious adverse events, notably hepatotoxicity, characterize its tolerability profile, but gemtuzumab ozogamicin is comparatively well tolerated by most patients. Gemtuzumab ozogamicin is a valuable new treatment option for patients aged>or=60 years with CD33-positive AML in first relapse for whom other cytotoxic chemotherapy is not considered appropriate; patients with a first CR (CR1) of >12 months are likely to have the best outcome.

Verteporfin

Photodynamic therapy (PDT) with verteporfin (Visudyne), a photosensitising protoporphyrin derivative, is used in the management of subfoveal choroidal neovascularisation (CNV) secondary to age-related macular degeneration (AMD) or pathological myopia (PM). PDT with verteporfin over 1 and 2 years reduces the decline in visual acuity in patients with classic-containing subfoveal CNV secondary to AMD. Verteporfin is generally well tolerated by most patients. Verteporfin is also effective in patients with CNV secondary to PM, although data in this indication are limited and further controlled studies are required. Although verteporfin has shown efficacy in patients with occult AMD-related subfoveal CNV lesions in early trials, data are currently limited on its first-line use in this indication; fully published data from the Verteporfin In Occult (VIO) trial are therefore awaited with interest. Verteporfin should be considered as a first-line treatment in patients with predominantly classic subfoveal CNV secondary to AMD, and in patients with smaller minimally classic subfoveal CNV lesions. It may also be considered an option for the treatment of patients with occult AMD-related subfoveal CNV in whom visual acuity decreases or predominantly classic features develop over time.

Risperidone: a review of its use in the treatment of bipolar mania

Risperidone (Risperdal) is an atypical antipsychotic with high affinity for 5-hydroxytryptamine (5-HT)2A, dopamine D2 and alpha1- and alpha2-adrenergic receptors. Risperidone is now approved in the UK and the US for use in bipolar mania. Risperidone < or =6 mg/day, as monotherapy or adjunctive therapy with first-line mood stabilisers, significantly improves moderate and severe bipolar mania and improves global functioning over 3 weeks. Improvements in Young Mania Rating Scale (YMRS) scores in double-blind trials were greater with risperidone than with placebo over 3 weeks, and similar to those with haloperidol over 3 and 12 weeks. Risperidone was reasonably well tolerated. Limited data are available on the combination of risperidone and carbamazepine. Risperidone, as monotherapy or combined therapy with lithium or valproate semisodium, is an effective treatment option in bipolar mania.

Calcipotriol/betamethasone dipropionate: a review of its use in the treatment of psoriasis vulgaris

The two-compound product containing calcipotriol 50 microg/g plus betamethasone dipropionate 0.5 mg/g (Dovobet, Daivobet) [referred to here as calcipotriol/betamethasone dipropionate], is a topical treatment for psoriasis vulgaris, combining a vitamin D analog and a corticosteroid. For most adult patients with psoriasis vulgaris on the trunk and limbs, up to 4 weeks of therapy with calcipotriol/betamethasone dipropionate provides an effective and well tolerated treatment. In clinical trials, patients with a mean baseline psoriasis area and severity index (PASI) of 9.5-10.9 experienced a mean 65.0-74.4% PASI improvement within 4 weeks, significantly better than improvements with calcipotriol 50 microg/g monotherapy, betamethasone dipropionate 0.5 mg/g monotherapy, or placebo. In addition, in 6.4%-20.1% of patients, lesions cleared. In patients who were subsequently treated with calcipotriol maintenance therapy, benefits were retained for at least 4 weeks. The safety of calcipotriol/betamethasone dipropionate in patients treated for up to 1 year was generally good; fewer than 5% of patients experienced adverse events possibly associated with long-term corticosteroid use.

Candesartan Cilexetil

Candesartan cilexetil is the orally administered pro-drug of candesartan, a highly selective antagonist of the angiotensin II subtype 1 receptor that mediates the pressor activities of angiotensin II. Candesartan cilexetil is widely used for the treatment of hypertension and has recently been approved in Europe for the treatment of chronic heart failure (CHF) in patients with impaired left ventricular (LV) systolic function. Results of the CHARM (Candesartan in Heart failure: Assessment of Reduction in Mortality and morbidity) programme suggest that oral candesartan cilexetil reduces morbidity and mortality in patients with CHF and LV ejection fraction (LVEF) < or =40%. There are cardiovascular benefits when candesartan cilexetil is administered as an alternative to an ACE inhibitor, or as an add-on to current treatment regimens that include an ACE inhibitor, in symptomatic CHF. While tolerability is generally good, renal monitoring is required. The recent approval of candesartan cilexetil as both add-on and alternative therapy to ACE inhibitors in patients with CHF and impaired LV systolic function recognises the cardiovascular benefits of candesartan cilexetil in both types of treatment regimens.

Palivizumab: a review of its use as prophylaxis for serious respiratory syncytial virus infection

Palivizumab (Synagi) is a humanized monoclonal antibody that provides immunoprophylaxis against serious lower respiratory tract infections (LRTIs) caused by respiratory syncytial virus (RSV). RSV is the leading cause of hospitalization for LRTIs in infants, causing winter- or wet-season epidemics. In two double-blind, placebo-controlled trials, intramuscular palivizumab 15 mg/kg every 30 days for 5 months significantly reduced RSV-related hospitalizations by 55% in 1502 infants with prematurity and/or bronchopulmonary dysplasia/chronic lung disease (BPD/CLD) and by 45% in 1287 infants with hemodynamically significant congenital heart disease (HSCHD). Reductions were statistically significant versus placebo in infants with BPD/CLD, with all degrees of prematurity, and with acyanotic/other heart disease. Palivizumab was generally well tolerated, with < or =1.9% of recipients discontinuing treatment for tolerability reasons. In placebo-controlled trials, the most common potentially drug-related adverse events were fever, nervousness, injection-site reactions, and diarrhea. Drug-related events occurred in 7.2-11% of palivizumab recipients in controlled trials (vs 6.9-10% with placebo) and 0-7.9% in open-label trials. Very few serious potentially drug-related adverse events occurred in clinical trials; four occurred in 2 of 285 patients in one open-label trial. No significant anti-palivizumab antibodies developed during palivizumab use. Palivizumab trough serum concentrations were below the recommended 40 microg/mL in about 33% and up to 14% of children prior to their second and third palivizumab injections. In pharmacoeconomic studies, the cost of palivizumab per hospitalization averted was generally lowest in the highest-risk infants. Drug cost was generally the most influential factor in sensitivity analyses. In conclusion, prophylaxis with palivizumab significantly reduces the incidence of RSV-related hospitalization relative to placebo and is generally well tolerated in high-risk infants aged <2 years, including those with prematurity and BPD/CLD or HSCHD, which are risk factors for early or serious RSV infection. Palivizumab is approved for use in these patients. Other high-risk infants in whom palivizumab has not been formally assessed, such as those with immunodeficiency, cystic fibrosis, or location-specific risk factors (including extended hospital stays) might potentially benefit from palivizumab. The use of palivizumab in these other high-risk populations is likely to be determined as much by pharmacoeconomic considerations as by efficacy outcomes.

Vulnerability to malaria, tuberculosis, and HIV/AIDS infection and disease. Part II: determinants operating at environmental and institutional level

This review summarises a wide range of evidence about environmental and institutional factors that influence vulnerability to malaria, tuberculosis, and HIV infection. By combining this information with that obtained on factors operating at individual, household, and community level, we have identified potential common strategies for improving resilience to all three diseases simultaneously. These strategies depend on collaborations with non-health sectors and include progress in rapid access to funds, provision of education about disease transmission and management, reduction of the burden on carers (predominantly women), and improvement in the quality of health services.

Vulnerability to malaria, tuberculosis, and HIV/AIDS infection and disease. Part 1: determinants operating at individual and household level

A high burden of malaria, tuberculosis, and HIV infection contributes to national and individual poverty. We have reviewed a broad range of evidence detailing factors at individual, household, and community levels that influence vulnerability to malaria, tuberculosis, and HIV infection and used this evidence to identify strategies that could improve resilience to these diseases. This first part of the review explores the concept of vulnerability to infectious diseases and examines how age, sex, and genetics can influence the biological response to malaria, tuberculosis, and HIV infection. We highlight factors that influence processes such as poverty, livelihoods, gender discrepancies, and knowledge acquisition and provide examples of how approaches to altering these processes may have a simultaneous effect on all three diseases.

Telmisartan/hydrochlorothiazide: in the treatment of essential hypertension

Oral telmisartan/hydrochlorothiazide (HCTZ) combines two antihypertensive agents, a selective angiotensin II receptor antagonist with a long half-life and once-daily administration, and a thiazide diuretic. In two large, 8-week, double-blind trials, patients with hypertension unresponsive to monotherapy who received combined telmisartan/HCTZ 80/12.5 or 40/12.5 mg/day, achieved significantly larger reductions in diastolic and systolic blood pressure (BP), than recipients of continued telmisartan monotherapy (p < 0.05 for all). Compliance with telmisartan/HCTZ 80/12.5 mg/day was 98.9%. In patients with hypertension, telmisartan/HCTZ resulted in similar BP reductions to oral enalapril/HCTZ and atenolol/HCTZ in 26-week double-blind trials and greater reductions than oral losartan/HCTZ 50/12.5 mg/day in a 6-week randomised open-label trial (p < 0.001). Up to one-third of patients with hypertension initially responsive to telmisartan 40 or 80 mg/day in a 4-year study required the eventual addition of HCTZ 12.5 or 25 mg/day and/or another agent to maintain BP control. BP was controlled in about 75% of these by adding only HCTZ. In clinical trials of up to 4 years, including elderly patients, telmisartan/HCTZ had similar tolerability to placebo, with few reports of hypokalaemia. Most adverse events were mild to moderate.

Novolizer: a multidose dry powder inhaler

Novolizer is a multidose breath-actuated dry powder inhaler (DPI) approved for use with salbutamol (albuterol) and budesonide. It has multiple patient feedback mechanisms and an inspiratory flow rate threshold designed to optimise dosage. In two studies, children aged 4-11 years with asthma correctly used Novolizer and generated mean peak inspiratory flow rates (PIFRs) through Novolizer of 76 and 92.7 L/min, well above the Novolizer threshold of 35-50 L/min. In healthy volunteers, median lung deposition of budesonide administered via Novolizer was 19.9-32.1% at mean PIFRs of 54-99 L/min. In a randomised, double-blind, single-dose study in patients with chronic obstructive pulmonary disease (COPD) and asthma, the 1-hour improvement from baseline in mean maximum forced expiratory volume in 1 second (FEV(1)) was 21.3% with inhalation of salbutamol through Novolizer, and 19.5% through Sultanol pressurised metered-dose inhaler (MDI). FEV(1) increased significantly in patients with asthma and COPD treated for 4 weeks in a randomised, open-label comparison of salbutamol through either Novolizer or Sultanol MDI. A randomised open-label study in adults with asthma treated with inhaled budesonide found equivalent improvements in FEV(1) and symptoms with Novolizer and Turbuhaler. Novolizer was well accepted overall. Most patients preferred it to previously used MDIs or DPIs. Only 4-5% found the taste feedback unacceptable. Physicians observed improved compliance over 4 weeks in 80% of patients with asthma using Novolizer.

Inhaled Salmeterol/Fluticasone Propionate

The salmeterol/fluticasone propionate dry powder inhaler (DPI) [Advair Diskus, Seretide Accuhaler] contains the long-acting beta2-adrenoceptor agonist salmeterol and the inhaled corticosteroid fluticasone propionate. In the US, twice-daily salmeterol/fluticasone propionate 50/250 microg is approved for use in adults with chronic obstructive pulmonary disease (COPD) associated with chronic bronchitis, and in the EU, the twice-daily 50/500 microg dosage is approved for use in patients with severe COPD, repeat exacerbations and significant symptoms despite bronchodilator therapy. In patients with moderate-to-severe COPD, twice-daily inhaled salmeterol/fluticasone propionate 50/250 or 50/500 microg for 24-52 weeks improves predose forced expiratory volume in 1 second (FEV1) significantly more than salmeterol monotherapy, improves postdose or postbronchodilator FEV1 significantly more than fluticasone propionate monotherapy and results in clinically significant improvements in health-related quality of life. Salmeterol/fluticasone propionate 50/500 microg significantly reduced annual COPD exacerbations, especially in severe COPD. Some corticosteroid-related adverse events were increased in recipients of fluticasone propionate with or without salmeterol versus salmeterol monotherapy or placebo; withdrawal from fluticasone propionate, including combination therapy, needs careful management to minimise COPD exacerbations. The DPI combining a corticosteroid and long-acting beta2-agonist provides benefits over monotherapy and may encourage patient compliance in COPD.

Daptomycin

Daptomycin is a lipopeptide antibacterial with rapid in vitro activity against Gram-positive cocci. It is approved for use in patients with complicated skin and skin structure infections (cSSSIs) caused by specified Gram-positive cocci. In vitro, daptomycin was active against Staphylococcus aureus (including meticillin-resistant strains), Streptococcus pyogenes, S. agalactiae, group C and G beta-haemolytic streptococci and vancomycin-susceptible Enterococcus faecalis. Bactericidal activity in vitro was rapid and concentration dependent. In two randomised, investigator-blinded, multicentre trials in patients with cSSSIs, intravenous daptomycin 4 mg/kg once daily was as effective as standard therapy (intravenous semi-synthetic penicillin 4-12 g/day or vancomycin 1 g 12-hourly). Clinical success rates assessed 6-20 days after treatment end were 82.1% in daptomycin recipients and 82.9% in recipients of standard therapy (pooled data). In patients with cSSSIs, the adverse event profiles of daptomycin and vancomycin were similar. Creatine phosphokinase (CPK) levels increased in 2.8% of daptomycin recipients and 1.8% of patients who received standard therapy; only one daptomycin recipient (0.2%) experienced increased CPK levels and muscle symptoms that were not associated with any comorbid factors.