Diabetes and incidence of breast cancer and its molecular subtypes: A systematic review and meta-analysis

Diabetes mellitus (DM) has been proposed to be positively associated with breast cancer (BCa) risk due to shared risk factors, metabolic dysfunction, and the use of antidiabetic medications. We conducted a systematic review and meta-analysis to evaluate the association between DM and BCa risk. We searched PubMed, Embase, and Web of Science for cohort and case-control studies assessing the association between DM and BCa published before 10 December 2021. Two reviewers independently screened the studies for inclusion, abstracted article data, and rated study quality. Random effects models were used to estimate summary risk ratios (RRs) and 95% confidence intervals (CIs). From 8396 articles identified in the initial search, 70 independent studies were included in the meta-analysis. DM was associated with an overall increased risk of BCa (RR = 1.20, 95% CI: 1.11-1.29). The 24 case-control studies demonstrated a stronger association (RR = 1.26, 95% CI: 1.13-1.40) than the 46 cohort studies (RR = 1.15, 95% CI: 1.05-1.27). Studies reporting risk by menopausal status found that postmenopausal women had an elevated risk of developing BCa (RR = 1.12, 95% CI: 1.07-1.17). No association between DM and BCa risk was observed among premenopausal women (RR = 0.95, 95% CI: 0.85-1.05). In addition, DM was associated with significantly increased risks of oestrogen receptor (ER)+ (RR = 1.09, 95% CI: 1.00-1.20), ER- (RR = 1.16, 95% CI: 1.04-1.30), and triple negative BCa (RR = 1.41, 95% CI: 1.01-1.96). The association estimate for human epidermal growth factor 2-positive BCa was also positive (RR = 1.21, 95% CI: 0.52-2.82), but the CI was wide and crossed the null. Our meta-analysis confirms a modest positive association between DM and BCa risk. In addition, our results suggest that the association between DM and BCa may be modified by menopausal status, and that DM may be differentially associated with BCa subtypes defined by receptor status. Additional studies are warranted to investigate the mechanisms underlying these associations and any influence of DM on BCa receptor expression.

Complementary and Alternative Medicine Use Among Women with Symptomatic Uterine Fibroids

Objective: The aim of this study is to examine complementary and alternative medicine (CAM) use among women with symptomatic uterine fibroids in the United States. Materials and Methods: In this cross-sectional analysis of baseline data from a multicenter, prospective cohort study of premenopausal women undergoing surgery for symptomatic fibroids and who enrolled in the Uterine Leiomyoma Treatment with Radiofrequency Ablation study from 2017 to 2019, we contrast women indicating use of at least one CAM modality specifically for fibroid symptoms against women using CAM for other reasons and CAM nonusers. Multivariable logistic regression models were performed to identify participant characteristics independently associated with CAM use for fibroids. Results: Among 204 women, 55% were Black/African American and the mean age was 42 (standard deviation 6.6) years. CAM use was common (67%), with 42% (95% confidence interval [CI]: 35%-49%) reporting use of CAM specifically to treat fibroid symptoms. Most commonly, CAM treatments used for fibroids were diet (62%) and herbs (52%), while CAM treatments for other reasons were exercise (80%) and massage (43%). On average, each participant who reported CAM use utilized three different types of CAM modalities. In a multivariable model, participants were more likely to use CAM for fibroids if they had pelvic pressure (odds ratio [OR] 2.50, 95% CI: 1.07-5.87, p = 0.04), a body-mass index lower than average (OR 0.76, 95% CI: 0.60-0.97, p = 0.03), and a lower health-related quality of life score (OR 0.61, 95% CI: 0.46-0.81, p = 0.001). Conclusions: In this diverse sample of women with symptomatic fibroids, CAM use was highly prevalent. Our findings highlight the need for providers to query patients about CAM use and understand the role of CAM in fibroid management. ClinicalTrials.gov Identifier: NCT02100904.

Human Papillomavirus-Associated Head and Neck Malignancies in Sub-Saharan Africa: A Systematic Review

PURPOSE

The proportion of head and neck cancers (HNCs) with human papillomavirus (HPV) positivity in sub-Saharan Africa (SSA) is poorly characterized. Characterizing this has implications in staging, prognosis, resource allocation, and vaccination policies. This study aims to determine the proportion of HPV-associated HNC in SSA.

MATERIALS AND METHODS

This systematic review included searches from PubMed, EMBASE, Web of Science, African Index Medicus, Google Scholar, and African Journals Online. All English publications reporting the proportion of HNC specimens from SSA patients who tested positive for HPV and/or p16 were included. Study quality was assessed using the National Institutes of Health Quality Assessment Tool for Case Series Studies.

RESULTS

In this systematic review of 31 studies and 3,850 patients, the overall p16 positivity was 13.6% (41 of 1,037 patients tested) with the highest proportion among oropharyngeal cancers (20.3%, 78 of 384 patients) and the overall HPV polymerase chain reaction positivity was 15.3% (542 of 3,548 samples tested) with the highest proportion among nasopharyngeal cancers (16.5%, 23 of 139 patients). Among the 369 HPV strains detected, the most common genotypes were HPV 16 (226 patients, 59.2%) and HPV 18 (78, 20.4%).

CONCLUSION

HPV was found to be associated with a significant proportion of HNC in SSA. The genotypes reported suggest that the nine-valent vaccine and gender-neutral vaccination policies should be considered. Given that these studies may not accurately capture prevalence nor causation of HPV in HNC subsites, additional research is needed to provide a more thorough epidemiologic understanding of HPV-associated HNC in SSA, including risk factors and clinical outcomes.

The Associations Between Sluggish Cognitive Tempo, Internalizing Symptoms, and Academic Performance in Children With Reading Disorder: A Longitudinal Cohort Study

OBJECTIVE

To investigate whether sluggish cognitive tempo (SCT) was associated with anxiety, depression, and academic performance (AP) in children with reading disorder (RD), and whether ADHD-Inattention (ADHD-IN) moderated these relationships.

METHOD

Parents and teachers of children with RD (N = 147, ages 6-18) completed evaluations of SCT, ADHD, anxiety, depression, and AP, every 3 months for 18 months. Baseline and longitudinal associations between SCT and outcomes, and effect moderation of ADHD-IN, were assessed.

RESULTS

Teacher-rated SCT was positively associated with teacher-rated anxiety (p < .001) and negatively associated with AP (p < .001) cross-sectionally and longitudinally, with significant effect modification by ADHD-IN for both outcomes. SCT was not associated with depression in adjusted cross-sectional and longitudinal analyses. There were no significant findings for any parent-reported measures.

CONCLUSION

SCT has negative effects on anxiety and AP in children with RD among individuals with low ADHD-IN according to teacher report. Targeted treatment of SCT may provide substantial benefits.

The role of grit and resilience in children with reading disorder: a longitudinal cohort study

Prior studies have suggested that grit and resilience predict both academic and career success. However, these qualities have not been examined in children with reading disorder (RD). We therefore investigated whether grit and resilience were associated with anxiety, depression, academic performance, and quality of life (QOL) in these students. This 3-year longitudinal cohort study included 163 participants with RD from 3 schools. Evaluations were completed by parents and/or teachers every 3 months. The Grit and Resilience Scale was adapted from the 10-item Connor-Davidson Resilience Scale and the 12-item Grit Scale. Outcome measures included anxiety (School Anxiety Scale - Teacher Report and the 8-item Spence Children's Anxiety Scale), depression (Short Mood and Feelings Questionnaire), academic performance, and QOL (Pediatric QOL Inventory 4.0). Multivariate linear regression models (adjusting for age and sex) assessed the associations at baseline. Repeated measures analysis using mixed-effects models assessed the relationship longitudinally. There were statistically significant associations between grit and resilience and all outcomes at baseline and over time. After adjusting for age and sex, improved grit and resilience was associated with decreased anxiety (β =  - 0.4, p < 0.001) and improved academic performance (β = 0.5, p < 0.001) when grit and resilience was measured by teachers, as well as decreased depression (β =  - 0.3, p < 0.001) and improved QOL (β = 0.6, p < 0.001) when grit and resilience was measured by parents. Grit and resilience are significantly related to mental health, academic performance, and QOL in children with RD. This suggests that interventions to improve grit and resilience may lead to positive benefits.

Feasibility of universal screening for postpartum mood and anxiety disorders among caregivers of infants hospitalized in NICUs: a systematic review

This systematic review evaluated the feasibility of implementing universal screening programs for postpartum mood and anxiety disorder (PMAD) among caregivers of infants hospitalized in the neonatal intensive care unit (NICU). Four moderate quality post-implementation cohort studies satisfied inclusion criteria (n = 2752 total participants). All studies included mothers; one study included fathers or partners. Screening included measures of depression and post-traumatic stress. Screening rates ranged from 48.5% to 96.2%. The incidence of depression in mothers ranged from 18% to 43.3% and was 9.5% in fathers. Common facilitators included engaging multidisciplinary staff in program development and implementation, partnering with program champions, and incorporating screening into routine clinical practice. Referral to mental health treatment was the most significant barrier. This systematic review suggests that universal PMAD screening in NICUs may be feasible. Further research comparing a wider range of PMAD screening tools and protocols is critical to address these prevalent conditions with significant consequences for parents and infants.

The association between anxiety and academic performance in children with reading disorder: A longitudinal cohort study

The purpose of this study was to examine the association between anxiety and overall academic performance (AP) in children with reading disorder (RD). This two-year longitudinal cohort study included 128 participants (aged 7-14 years) with RD. Anxiety symptoms were evaluated using the School Anxiety Scale - Teacher Report for the first year and the eight-item Spence Children's Anxiety Scale for the second year. AP was assessed by teacher ratings of progress in academic content areas, including reading, writing and math. Teachers completed evaluations every 3 months. We standardized all scores (to z scores). Multivariate linear regression models (adjusting for age, sex and Attention-Deficit/Hyperactivity Disorder symptoms) assessed the association cross-sectionally at each timepoint of survey completion. Repeated measures analysis using mixed models assessed the relationship longitudinally. Results from both univariate and multivariate analyses showed anxiety being significantly negatively associated with AP in children with RD, both cross-sectionally and longitudinally. Importantly, increased anxiety was significantly associated with reduced AP over time within an individual (adjusted β = -0.22, p = .002). This lends support to screening for anxiety disorders in children with RD. Future research should examine the directionality of this relationship, potential mediators in the pathway and whether interventions to reduce anxiety increase AP.

Association of Social and Behavioral Risk Factors With Mortality Among US Veterans With COVID-19

IMPORTANCE

The US Department of Veterans Affairs (VA) offers programs that reduce barriers to care for veterans and those with housing instability, poverty, and substance use disorder. In this setting, however, the role that social and behavioral risk factors play in COVID-19 outcomes is unclear.

OBJECTIVE

To examine whether social and behavioral risk factors were associated with mortality among US veterans with COVID-19 and whether this association might be modified by race/ethnicity.

DESIGN, SETTING, AND PARTICIPANTS

This cohort study obtained data from the VA Corporate Data Warehouse to form a cohort of veterans who received a positive COVID-19 test result between March 2 and September 30, 2020, in a VA health care facility. All veterans who met the inclusion criteria were eligible to participate in the study, and participants were followed up for 30 days after the first SARS-CoV-2 or COVID-19 diagnosis. The final follow-up date was October 31, 2020.

EXPOSURES

Social risk factors included housing problems and financial hardship. Behavioral risk factors included current tobacco use, alcohol use, and substance use.

MAIN OUTCOMES AND MEASURES

The primary outcome was all-cause mortality in the 30-day period after the SARS-CoV-2 or COVID-19 diagnosis date. Multivariable logistic regression was used to estimate odds ratios, clustering for health care facilities and adjusting for age, sex, race, ethnicity, marital status, clinical factors, and month of COVID-19 diagnosis.

RESULTS

Among 27 640 veterans with COVID-19 who were included in the analysis, 24 496 were men (88.6%) and the mean (SD) age was 57.2 (16.6) years. A total of 3090 veterans (11.2%) had housing problems, 4450 (16.1%) had financial hardship, 5358 (19.4%) used alcohol, and 3569 (12.9%) reported substance use. Hospitalization occurred in 7663 veterans (27.7%), and 1230 veterans (4.5%) died. Housing problems (adjusted odds ratio [AOR], 0.96; 95% CI, 0.77-1.19; P = .70), financial hardship (AOR, 1.13; 95% CI, 0.97-1.31; P = .11), alcohol use (AOR, 0.82; 95% CI, 0.68-1.01; P = .06), current tobacco use (AOR, 0.85; 95% CI, 0.68-1.06; P = .14), and substance use (AOR, 0.90; 95% CI, 0.71-1.15; P = .41) were not associated with higher mortality. Interaction analyses by race/ethnicity did not find associations between mortality and social and behavioral risk factors.

CONCLUSIONS AND RELEVANCE

Results of this study showed that, in an integrated health system such as the VA, social and behavioral risk factors were not associated with mortality from COVID-19. Further research is needed to substantiate the potential of an integrated health system to be a model of support services for households with COVID-19 and populations who are at risk for the disease.

Improving Social Knowledge and Skills among Adolescents with Autism: Systematic Review and Meta-Analysis of UCLA PEERS® for Adolescents

UCLA PEERS® for Adolescents is a widely applied program among a number of social skills training programs developed over the years. We synthesized current research evidence on the PEERS program to evaluate the treatment effect on four commonly used outcome measures. 12 studies met inclusion criteria for the review and nine met the criteria for meta-analysis. Results showed moderate to large pooled effects across measures and informants in favor of the PEERS program, with the largest effect seen in social knowledge improvement and the smallest effect in the frequency of get-togethers. The heterogeneity of effects across studies were examined and the limitations of the current evidence were discussed.

Implementing an established musculoskeletal educational curriculum in a new context: a study of effectiveness and feasibility

Background: Musculoskeletal (MSK) problems are common, yet many primary care (PC) providers feel inadequately trained to manage these conditions. Previous studies describe successful MSK educational innovations at single sites, but none have reported on subsequent attempts to replicate or adapt these innovations to new contexts. This article presents a study of a national Veterans Affairs MSK training program modified to fit an existing PC educational program.Objectives: (1) To evaluate the effectiveness and feasibility of an adapted MSK curriculum in a new context. (2) To provide a model for adaptation studies in health professions education.Design: A national MSK shoulder and knee curriculum was adapted for San Francisco VA PC trainees, which included a small-group workshop and workplace learning within a newly-created MSK clinic. Effectiveness was evaluated by assessments of trainee confidence in exam and injection skills (via 5-point Likert scale) and faculty-observed performance of knee and shoulder exams (reported as percent of maximum possible score). Feasibility was evaluated by determining acceptability of the program to PC trainees (via 5-point Likert scale) and ability to implement the curriculum using local resources.Results: 52 trainees completed the training during a 2-year period. Trainees' confidence in MSK exam skills improved from 3.3 to 4.5 for shoulder, and from 3.5 to 4.6 for knee. Confidence performing joint injections improved from 2.6 to 4.2 (shoulder) and 2.5 to 4.5 (knee) (p < 0.001 for all). Observed performance improved markedly - from 50% to 92% for shoulder, and 57% to 90% for knee. Feasibility was evident in high acceptability (5.0 for MSK clinic, and 4.9 for workshops), and successful and sustained implementation.Conclusions: Adapting an established MSK curriculum to a new context was effective and feasible. This may serve as a more efficient model for improving trainee education than de novo curriculum design at individual sites.

Optimal management of esophageal cancer in Africa: A systemic review of treatment strategies

Esophageal cancer (EC) is a leading cause of cancer morbidity and mortality in Africa. Despite the high burden of disease, optimal management strategies for EC in resource-constrained settings have yet to be established. This systematic review evaluates the literature on treatments for EC throughout Africa and compares the efficacy and safety of varying treatment strategies in this context (PROSPERO CRD42017071546). PubMed, Embase and African Index Medicus were searched for studies published on treatment strategies for EC in Africa from 1980 to 2020. Searches were supplemented by examining bibliographies of included studies and relevant conference proceedings. Methodological quality/risk of bias was assessed using the Cochrane Risk-of-Bias tool and the Newcastle-Ottawa Scale. Forty-six studies were included. Case series constituted the majority of studies: 13 were case series reporting on outcomes of esophagectomies, 17 on palliative luminal or surgical interventions, four on radiotherapy and three on concurrent chemoradiation. Nine randomized controlled trials were identified, of which four prospectively compared different treatment modalities (one investigating radiotherapy vs chemoradiation, three evaluating rigid plastic stents vs other treatments). This review summarizes the research on EC treatments in Africa published over the last four decades and outlines critical gaps in knowledge related to management in this context. Areas in need of further research include (a) evaluation of the safety and efficacy of neoadjuvant therapy in patients with locally advanced disease; (b) strategies to improve long-term survival in patients treated with definitive chemoradiation; and (c) the comparative effectiveness of modern palliative interventions, focusing on quality of life and survival as outcome measures.

COVID-19 Related Challenges and Advice from Parents of Children with Autism Spectrum Disorder

With the rise of the COVID-19 pandemic and shelter-in-place, families with children with autism spectrum disorder (ASD) face a unique set of challenges related to a diverse set of issues. A qualitative study was conducted in the form of semi-structured interviews from fifteen parents of children and adolescents from a non-public school for children with ASD. Questions covered the following topic areas: general COVID-19 experiences and concerns, changes in the child’s mood and behavior, changes in parent mood and behavior, and coping/advice. Quotes and descriptions from the participants were reviewed and grouped into thematic areas. Findings showed that parents of children with ASD are facing a wide range of challenges, including explaining COVID-19 and safety precautions to their child in a comprehensible way, assisting with e-learning, and guiding their child back into social situations and the community. As children with ASD have difficulties with transitions, parents stated the importance of creating structure in the home by creating schedules and boundaries, while allowing for flexibility as to not over enforce the rigidity children with autism often face. Advice on coping with the additional stressors were also shared. Parents recommended finding time for themselves to reset, utilizing support systems, and reflecting on daily pleasures as positive coping mechanisms. This study aimed to both develop an initial guide for families, teachers and clinicians caring for children with ASD and to create awareness in the community about the challenges presented by COVID-19 and shelter-in-place.

Quality of Life Among School-Age Children With Autism: The Oak Hill School Outcomes Study

Prior studies have documented a lower quality of life (QOL) in children with autism spectrum disorder (ASD) compared to typically developing peers, but few studies have examined the trajectory of QOL over time in the same population. We conducted a 2-year cohort study in 29 children attending a specialized school for ASD with quarterly measures of parent-rated QOL as well as parent and teacher measures of behavior and social skills to determine the trajectory of change in QOL and predictors of change. The average change in QOL was constant (no change over time), but there was substantial variation with some students showing significant gains and others showing declines. Exploratory analyses revealed that improvements in behavior and social skills were greater (nonsignificantly) among children with improvements in QOL. Children with improved QOL were also younger and had a lower initial symptom burden. This study suggests that early intervention programs that provide social skills and behavioral management strategies may improve QOL in children with ASD. The study also highlights the need to develop and study novel, qualitative measures of QOL in this population.

Breast Cancer Screening in Women With Schizophrenia: A Systematic Review and Meta-Analysis

OBJECTIVE

Women with schizophrenia appear to receive breast cancer diagnoses at later stages of the disease compared with the general population. To study this disparity, this report reviewed and quantified the differences in rates of mammography screening for women with schizophrenia and other psychotic disorders compared with the general population.

METHODS

A systematic literature search was conducted in PubMed, Embase, Web of Science, and PsycINFO databases. Each database was searched from inception to September 14, 2018. The search strategy included search terms for breast cancer, mammography, schizophrenia, and psychosis. Two reviewers independently screened and evaluated eligible studies. The main outcome measure was the rate of mammography screening among women with schizophrenia and psychotic disorders versus a comparable population of women without these diagnoses. Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were used for abstracting data, and the Newcastle-Ottawa Scale was used for assessing data quality. A meta-analysis with a random-effects model was performed.

RESULTS

From a total of 304 abstracts reviewed, 11 studies met the inclusion criteria, representing 25,447 women with diagnoses of schizophrenia or psychosis across four countries. The meta-analysis showed that women with schizophrenia were less likely than women without schizophrenia to receive mammography screening (pooled OR=0.50, 95% confidence interval=0.38-0.64, p<0.001). In subgroup analysis, this association was not significantly affected by quality of the study.

CONCLUSIONS

Women with schizophrenia and other psychotic disorders were about half as likely as the general population to receive mammography screening. Further research is needed to determine causes of this disparity.

Population health interventions to improve colorectal cancer screening by fecal immunochemical tests: A systematic review

Despite clear evidence that colorectal cancer (CRC) screening reduces mortality, screening, including fecal immunochemical tests (FIT), is underutilized. We conducted a systematic review to determine the evidence of efficacy of interventions to improve FIT completion that could be scaled and utilized in population health management. We systematically searched publication databases for studies evaluating provider- or system-level interventions to improve CRC screening by FIT between 1 January 1996 and 13 December 2017 without language restrictions. Twenty articles describing 25 studies were included, 23 were randomized controlled trials with 1 quasi-experimental and 1 observational study. Ten studies discussed mailed FIT outreach, 4 pre-FIT patient reminders, 3 tailored patient messages, 2 post-FIT reminders, 2 paired FIT with influenza vaccinations, 2 provider alerts and 1 study each described the use of high-quality small media and patient financial incentives. Mailed FIT outreach was consistently effective with median improvement in CRC screening of 21.5% (interquartile range (IQR) 13.6%-29.0%). FIT paired with vaccinations led to a median 15.9% (IQR 15.6%-16.3%) improvement, while pre-FIT and post-FIT reminders demonstrated modest efficacy with median 4.1% (IQR 3.6%-6.7%) and 3.1% (IQR 2.9%-3.3%) improvement in CRC screening, respectively. More than half the studies were at high or unclear risk of bias; heterogeneous study designs and characteristics precluded meta-analysis. FIT-based CRC screening programs utilizing multilevel interventions (e.g. mailed FIT outreach, FIT paired with other preventative services, and provider alerts) have the potential to significantly increase screening participation. However, such programs must also follow-up patients with abnormal FIT results.

Identification of urinary metabolites that correlate with clinical improvements in children with autism treated with sulforaphane from broccoli

Background

Children with autism spectrum disorder (ASD) have urinary metabolites suggesting impairments in several pathways, including oxidative stress, inflammation, mitochondrial dysfunction, and gut microbiome alterations. Sulforaphane, a supplement with indirect antioxidant effects that are derived from broccoli sprouts and seeds, was recently shown to lead to improvements in behavior and social responsiveness in children with ASD. We conducted the current open-label study to determine if we could identify changes in urinary metabolites that were associated with clinical improvements with the goal of identifying a potential mechanism of action.

Methods

Children and young adults enrolled in a school for children with ASD and related neurodevelopmental disorders were recruited to participate in a 12-week, open-label study of sulforaphane. Fasting urinary metabolites and measures of behavior (Aberrant Behavior Checklist—ABC) and social responsiveness (Social Responsiveness Scale—SRS) were measured at baseline and at the end of the study. Pearson’s correlation coefficient was calculated for the pre- to post-intervention change in each of the two clinical scales (ABS and SRS) versus the change in each metabolite.

Results

Fifteen children completed the 12-week study. Mean scores on both symptom measures showed improvements (decreases) over the study period, but only the change in the SRS was significant. The ABC improved − 7.1 points (95% CI − 17.4 to 3.2), and the SRS improved − 9.7 points (95% CI − 18.7 to − 0.8). We identified 77 urinary metabolites that were correlated with changes in symptoms, and they clustered into pathways of oxidative stress, amino acid/gut microbiome, neurotransmitters, hormones, and sphingomyelin metabolism.

Conclusions

Urinary metabolomics analysis is a useful tool to identify pathways that may be involved in the mechanism of action of treatments targeting abnormal physiology in ASD.

Trial registration

This study was prospectively registered at clinicaltrials.gov (NCT02654743) on January 11, 2016.

Integrating Autism Care through a School-Based Intervention Model: A Pilot Study

The purpose of this pilot study is to determine the feasibility of monitoring the progress of children with an autism spectrum disorder (ASD) both in school and at home to promote a school-based integrated care model between parents, teachers, and medical providers. This is a prospective cohort study. To monitor progress, outcome measures were administered via an online platform developed for caregivers and teachers of children (n = 30) attending a school specializing in neurodevelopmental disorders and using an integrated medical and education program. Longitudinal analysis showed improvements in a novel scale, the Teacher Autism Progress Scale (TAPS), which was designed to measure key autism-related gains in a school environment (2.1-point improvement, p = 0.004, ES = 0.324). The TAPS showed a strong and statistically significant correlation, with improvement in aberrant behavior (r = -0.50; p = 0.008) and social responsiveness (r = -0.70; p < 0.001). The results also showed non-statistically significant improvements in aberrant behavior, social responsiveness, and quality of life over time at both school and home. To assess feasibility of ongoing progress measurement, we assessed missing data, which showed caregivers were more likely to miss surveys during summer. Results demonstrate the value and feasibility of online, longitudinal data collection in school to assist with individualized education planning and collaborative care for children with ASD. Lessons learned in this pilot will support school outcomes researchers in developing more efficacious, collaborative treatment plans between clinicians, caregivers, and teachers.

A novel embryo culture media supplement that improves pregnancy rates in mice

The preimplantation embryoinvivois exposed to numerous growth factors in the female reproductive tract, which are not recapitulated in embryo culture mediain vitro. The IGF2 and plasminogen activator systems facilitate blastocyst development. We hypothesized that the addition of IGF2 in combination with urokinase plasminogen activator (uPA) and plasminogen could improve rates of blastocyst hatching and implantation in mice. B6BcF1 and CBAB6F2 mouse embryos were divided into one of four supplemented culture media treatment groups: (1) control (media only); (2) 12.5 nM IGF2; (3) 10 µg/mL uPA and 5 µg/mL plasminogen; or (4) a combination of IGF2, uPA and plasminogen treatments. Embryo development to blastocyst stage and hatching were assessed before transfer to pseudopregnant recipient females and implantation, pregnancy rates and postnatal growth were assessed. After 90.5 h of culture, IGF2 + U + P treatment increased the percentage of B6BcF1 embryos that were hatching/hatched and percentage developing to blastocyst stage compared with controls (P < 0.02). Following B6BcF1 embryo transfer, IGF2 + U + P treatment increased implantation sites at day 8 of pregnancy compared with controls (P < 0.05). Replication in the CBAB6F2 mouse strain showed significant improvements in pregnancy rates at days 8 and 18 but not in blastocyst development. No adverse effects were seen on gestational age, litter size or birthweight, or the reproductive capacity of offspring of IGF2 + U + P treated embryos. For embryos susceptible to detrimental effects ofin vitroculture, IGF2, uPA and plasminogen supplementation of culture media can improve pregnancy success, but the effect of treatment is dependent on the mouse strain.

Examining Clinics for Children with Autism: The Autism Translating To Treatment Study

OBJECTIVES

Certain clinical providers specialize in providing complementary and integrative medicine (CIM) therapies for children with autism spectrum disorder (ASD). Because many of these providers and their patients/families have reported substantial improvement, the authors developed an online platform to carefully examine these clinical practices. The initial goal was to examine the feasibility of prospective data collection in this setting. The larger goals were to characterize the tests and treatments used in these clinics; examine associations between specific treatments, biomarkers, and improved outcomes; and identify promising treatments for future study.

DESIGN

Prospective cohort study.

SETTING

Four CIM clinics specializing in treating children with ASD.

PATIENTS

Children with ASD age 2-8 years.

INTERVENTIONS

The study protocol provided no interventions, but all interventions provided by the CIM clinical providers were recorded.

OUTCOME MEASURES

Aberrant Behavior Checklist (ABC); Social Responsiveness Scale (SRS); and instruments that assessed sensory sensitivity, language, gastrointestinal (GI) symptoms, pediatric quality of life, and caregiver strain.

RESULTS

Fourteen children were enrolled (mean age, 4.4 years). Over 3 months, the total behavior score (ABC) decreased (improved) from 110.8 to 103.8 (change, -7.0; 95% confidence interval [CI], -27.9 to 13.9), and the total social responsiveness score (SRS) decreased (improved) from 133.8 to 127.2 (change, -6.6; 95% CI, -30.5 to 17.3), but these changes were not statistically significant. Similarly, caregiver strain and pediatric quality of life decreased (improved) but by a nonsignificant amount. More severe GI symptoms and more severe ASD symptoms were associated with lower quality of life (p < 0.001).

CONCLUSIONS

Barriers to successful data collection were identified. Despite these challenges, this study could confirm interesting associations between data elements, highlighting the future value of similar systems for improving evidence-based care in this population.

Randomized, Placebo-Controlled Trial of Methyl B12 for Children with Autism

OBJECTIVE

Children with autism spectrum disorder (ASD) have been reported to have reduced ability to methylate DNA and elevated markers of oxidative stress. We sought to determine if methyl B12, a key metabolic cofactor for cellular methylation reactions and antioxidant defense, could improve symptoms of ASD.

METHODS

A total of 57 children with ASD were randomly assigned to 8 weeks of treatment with methyl B12 (75 μg/kg) or saline placebo every 3 days in a subcutaneous injection. The primary outcome measure was overall improvement in symptoms of ASD as measured by the Clinical Global Impressions-Improvement (CGI-I) score. Secondary outcome measures included changes in the Aberrant Behavior Checklist (ABC) and the Social Responsiveness Scale (SRS). Laboratory measures of methionine methylation and antioxidant glutathione metabolism were assessed at baseline and 8 weeks.

RESULTS

A total of 50 children (mean age 5.3 years, 79% male) completed the study. The primary outcome measure - the clinician rated CGI-I score - was statistically significantly better (lower) in the methyl B12 group (2.4) than in the placebo group (3.1) (0.7 greater improvement in the methyl B12 group, 95% CI 1.2-0.2, p = 0.005). Clinical improvement among children treated with methyl B12 was positively correlated with increases in plasma methionine (p = 0.05), decreases in S-adenosyl-l-homocysteine (SAH) (p = 0.007) and improvements in the ratio of S-adenosylmethionine (SAM) to SAH (p = 0.007), indicating an improvement in cellular methylation capacity. No improvements were observed in the parent-rated ABC or SRS.

CONCLUSIONS

Methyl B12 treatment improved clinician-rated symptoms of ASD that were correlated with improvements in measures of methionine metabolism and cellular methylation capacity. Clinical Trial Registry: Efficacy Study of Subcutaneous Methyl B12 in Children with Autism: NCT01039792 ( clinicaltrials.gov1 ).

Prevalence and Predictors of Complementary and Alternative Medicine Use in a Large Insured Sample of Children with Autism Spectrum Disorders

PURPOSE

The purpose of the present study was to examine the prevalence and predictors of complementary and alternative medicine (CAM) use as well as parental perceptions of CAM efficacy in a large, geographically diverse sample of children with Autism Spectrum Disorders (ASD).

METHODOLOGY

Data were obtained from a web-based survey administered to parents of children with ASD at four sites participating in the Mental Health Research Network (MHRN). The web survey obtained information about services and treatments received by children with ASD as well as the caregivers' experiences with having a child with ASD.

RESULTS

Approximately 88% of the sample had either used CAM in the past or had recently used some type of CAM. The following characteristics were associated with CAM use: greater parental education, younger child age, a mix of regular and special classroom settings and prescription drug use in the past three months.

CONCLUSIONS

The use of CAM was very prevalent in this large, geographically diverse sample of children with ASD. It is critical that providers be prepared to discuss the advantages and potential side effects with families to help them make well-informed health care decisions and prevent possible CAM-drug interactions.

Change in plasma cytokine levels during risperidone treatment in children with autism

BACKGROUND

Atypical antipsychotics decrease irritability in autism. They also affect the cytokine network. Psychological stress, depression, and, possibly, autism spectrum disorder (ASD) are associated with the production of pro-inflammatory cytokines. We sought to determine if risperidone treatment led to changes in plasma cytokine levels.

METHODS

Forty-five subjects from an open-label study of risperidone treatment of children and adolescents with ASD, ages 4-18 years, had an analysis of 27 different cytokines at baseline and after 8 weeks of treatment using multiplex assays (Millipore) and read on the Luminex 100(™) platform. We examined changes in each of the cytokine levels in the entire group, and also compared changes in cytokines in responders versus nonresponders.

RESULTS

After 8 weeks of risperidone treatment, 2 of the 27 plasma cytokines showed statistically significant decreases in median levels: Eotaxin (p=0.0003) and monocyte chemoattractant protein-1 (MCP-1) (p=0.0024). Six of the 48 subjects met two criteria for responders to risperidone, and the median values of interleukin (IL)-5 were significantly higher (p=0.005) in the overall responder group than in nonresponders.

CONCLUSIONS

Two cytokines, eotaxin and MCP-1, which have previously been identified as abnormally elevated in children with autism, decreased during treatment with risperidone. This suggests a possible mechanism of action of risperidone treatment and a balancing of the immune system in affected subjects in this very preliminary study.

Internet-based, randomized, controlled trial of omega-3 fatty acids for hyperactivity in autism

OBJECTIVE

Preliminary evidence suggests that omega-3 fatty acids may reduce hyperactivity in children with autism spectrum disorder (ASD). We sought to examine the feasibility of a novel, Internet-based clinical trial design to evaluate the efficacy of this supplement.

METHOD

E-mail invitations were sent to parents of children aged 5 to 8 years enrolled in the Interactive Autism Network. All study procedures, including screening, informed consent, and collection of outcome measures took place over the Internet. The primary outcome measures were parent- and teacher-rated changes in hyperactivity on the Aberrant Behavior Checklist (ABC-H).

RESULTS

During the 6-week recruitment period, 57 children from 28 states satisfied all eligibility criteria and were randomly assigned to 1.3 grams of omega-3 fatty acids or an identical placebo daily for 6 weeks. Outcome assessments were obtained from all 57 participants and 57 teachers, and the study was completed in 3 months. Children in the omega-3 fatty acid group had a greater reduction in hyperactivity (-5.3 points) compared to the placebo group (-2.6 points), but the difference was not statistically significant (1.9-point greater improvement in the omega-3 group, 95% CI = -2.2 to 5.2). Adverse events were rare and not associated with omega-3 fatty acids. Participant feedback was positive.

CONCLUSION

Internet-based, randomized controlled trials of therapies in children with ASD are feasible and may lead to marked reductions in the time and cost of completing trials. A larger sample size is required to definitively determine the efficacy of omega-3 fatty acids. Clinical trial registration information-Omega-3 Fatty Acids for Hyperactivity Treatment in Autism Spectrum Disorder; http://clinicaltrials.gov; NCT01694667.

Accuracy of fecal immunochemical tests for colorectal cancer: systematic review and meta-analysis

BACKGROUND

Performance characteristics of fecal immunochemical tests (FITs) to screen for colorectal cancer (CRC) have been inconsistent.

PURPOSE

To synthesize data about the diagnostic accuracy of FITs for CRC and identify factors affecting its performance characteristics.

DATA SOURCES

Online databases, including MEDLINE and EMBASE, and bibliographies of included studies from 1996 to 2013.

STUDY SELECTION

All studies evaluating the diagnostic accuracy of FITs for CRC in asymptomatic, average-risk adults.

DATA EXTRACTION

Two reviewers independently extracted data and critiqued study quality.

DATA SYNTHESIS

Nineteen eligible studies were included and meta-analyzed. The pooled sensitivity, specificity, positive likelihood ratio, and negative likelihood ratio of FITs for CRC were 0.79 (95% CI, 0.69 to 0.86), 0.94 (CI, 0.92 to 0.95), 13.10 (CI, 10.49 to 16.35), 0.23 (CI, 0.15 to 0.33), respectively, with an overall diagnostic accuracy of 95% (CI, 93% to 97%). There was substantial heterogeneity between studies in both the pooled sensitivity and specificity estimates. Stratifying by cutoff value for a positive test result or removal of discontinued FIT brands resulted in homogeneous sensitivity estimates. Sensitivity for CRC improved with lower assay cutoff values for a positive test result (for example, 0.89 [CI, 0.80 to 0.95] at a cutoff value less than 20 µg/g vs. 0.70 [CI, 0.55 to 0.81] at cutoff values of 20 to 50 µg/g) but with a corresponding decrease in specificity. A single-sample FIT had similar sensitivity and specificity as several samples, independent of FIT brand.

LIMITATIONS

Only English-language articles were included. Lack of data prevented complete subgroup analyses by FIT brand.

CONCLUSION

Fecal immunochemical tests are moderately sensitive, are highly specific, and have high overall diagnostic accuracy for detecting CRC. Diagnostic performance of FITs depends on the cutoff value for a positive test result.

PRIMARY FUNDING SOURCE

National Institute of Diabetes and Digestive and Kidney Diseases and National Cancer Institute.

Colpodella spp.-like parasite infection in woman, China

The phylum Apicomplexa comprises intracellular protozoa that include many human pathogens. Their nearest relatives are chromerids and colpodellids. We report a case of a Babesia spp.-like relapsing infection caused by a newly described microorganism related to the Apicomplexa. This case is highly suggestive of a previously undescribed type of colpodellid that infects vertebrates.

The impact of a "low-intensity" versus "high-intensity" medical intensive care unit on patient outcomes in critically ill veterans

OBJECTIVE

To determine whether a low-intensity versus high-intensity medical intensive care unit (MICU) format in a Veterans Affairs (VA) hospital setting improves patient outcomes, as measured by duration of mechanical ventilation (MV), ventilator-free days (VFDs), and hospital mortality.

DESIGN

Retrospective cohort study.

SETTING

Medical intensive care unit at the San Francisco Veterans Affairs Medical Center (SFVAMC).

PATIENTS

On July 1, 2004, the SFVAMC transitioned from a low-intensity MICU to a high-intensity MICU. All patients admitted to the MICU who required MV for 18 months before (n = 96) and 18 months after (n = 131) the transition were included in the analysis.

MEASUREMENTS

We prospectively defined the primary outcome measure as the difference in the median duration of MV between groups. Secondary outcomes included VFDs and hospital mortality. Continuous variables were compared using the Wilcoxon rank sum test; dichotomous variables were compared using Fisher exact test.

MAIN RESULTS

The low-intensity and high-intensity MICU groups were similar in age, gender, weight, and admitting diagnosis (P > .27 in all cases). Acute Physiology and Chronic Health Evaluation II (APACHE II) scores were 22.0 in the low-intensity era and 20.0 in the high-intensity era (P = .048). Median duration of MV was significantly lower in the high-intensity MICU format compared to the low-intensity MICU format (102 vs 61 hours, P for log-rank test = .0052). After controlling for covariates, there were 4.2 more VFDs in the high-intensity era (95% CI 1.9 to 6.6 days). The high-intensity era was associated with a reduced hospital mortality rate (27% vs 40%) and an adjusted odds ratio of 0.34 (95% CI 0.15 to 0.74).

CONCLUSIONS

For critically ill veterans admitted to an MICU requiring MV, a high-intensity ICU structure is associated with more favorable mechanical ventilatory outcomes and lower mortality.

A pilot randomized controlled trial of omega-3 fatty acids for autism spectrum disorder

We conducted a pilot randomized controlled trial to determine the feasibility and initial safety and efficacy of omega-3 fatty acids (1.3 g/day) for the treatment of hyperactivity in 27 children ages 3-8 with autism spectrum disorder (ASD). After 12 weeks, hyperactivity, as measured by the Aberrant Behavior Checklist, improved 2.7 (± 4.8) points in the omega-3 group compared to 0.3 (± 7.2) points in the placebo group (p = 0.40; effect size = 0.38). Correlations were found between decreases in five fatty acid levels and decreases in hyperactivity, and the treatment was well tolerated. Although this pilot study did not find a statistically significant benefit from omega-3 fatty acids, the small sample size does not rule out small to moderate beneficial effects.

Improving the prediction of response to therapy in autism

Autism is a heterogeneous disorder involving complex mechanisms and systems occurring at diverse times. Because an individual child with autism may have only a subset of all possible abnormalities at a specific time, it may be challenging to identify beneficial effects of an intervention in double-blind, randomized, controlled trials, which compare the mean responses to treatments. Beneficial effects in a small subset of children may be obscured by the lack of effect in the majority. We review the evidence for several potential model systems of biochemical abnormalities that may contribute to the etiology of autism, we describe potential biomarkers or treatment targets for each of these abnormalities, and we provide illustrative treatment trials using this methodology. Potential model systems include immune over and under reactivity, inflammation, oxidative stress, free fatty acid metabolism, mitochondrial dysfunction, and excitotoxicity. Including potential biomarkers and targeted treatments in clinical trials for autism provides a potential method for limiting the heterogeneity of enrolled subjects, which may improve the power of studies to identify beneficial effects of treatments while also improving the understanding of the disease.

Gender as a risk factor for advanced neoplasia and colorectal cancer: a systematic review and meta-analysis

BACKGROUND & AIMS

Studies have reported higher rates of advanced colorectal neoplasia in men than in women. We performed a meta-analysis to provide a quantitative pooled risk estimate of the association between gender and advanced colorectal neoplasia.

METHODS

We conducted a systematic review to identify studies of average risk and asymptomatic individuals undergoing screening colonoscopy. We also included studies of subjects with a family history of colorectal neoplasia. We used random effects models to evaluate pooled relative risk estimates and performed heterogeneity and publication bias analyses. The primary outcome measure was relative risk of advanced neoplasia in men compared with women. A secondary outcome measure was relative risk for colorectal cancer.

RESULTS

Seventeen studies consisting of 18 different populations were included, comprising 924,932 men and women. The pooled relative risk estimate for advanced neoplasia for men compared with women was 1.83 (95% confidence interval [CI], 1.69 -1.97). This positive association between gender and advanced neoplasia was significant across all age groups from 40 to older than 70 years. In 5 studies, the relative risk estimate for cancer for men compared with women was 2.02 (95% CI, 1.53-2.66). Significant heterogeneity was found for the overall analysis and for studies reporting on cancer but not for studies thate xcluded subjects with a family history or for those analyses grouped by age.

CONCLUSIONS

This meta-analysis provides strong evidence that men are at greater risk for advanced colorectal neoplasia across all age groups. This might inform decisions to create sex-specific colorectal cancer screening recommendations.

Genetic testing before anticoagulation? A systematic review of pharmacogenetic dosing of warfarin

BACKGROUND

Genotype-guided initial warfarin dosing may reduce over-anticoagulation and serious bleeding compared to a one-dose-fits-all dosing method.

OBJECTIVE

The objective of this review was to investigate the safety and efficacy of genotype-guided dosing of warfarin in reducing the occurrence of serious bleeding events and over-anticoagulation.

DATA SOURCES

The authors searched PubMed, EMBASE and International Pharmaceutical Abstracts through January 23, 2009, without language restrictions. Selected articles were randomized trials comparing pharmacogenetic dosing of warfarin versus a "standard" dose control algorithm in adult patients taking warfarin for the first time.

REVIEW METHODS

Two reviewers independently extracted data and assessed study quality using a validated instrument. The primary outcomes were major bleeding and time spent within the therapeutic range International Normalized Ratio (INR). Secondary outcomes included minor bleeding, thrombotic events and other measures of anticoagulation quality.

RESULTS

Three of 2,014 studies (423 patients) met the inclusion and exclusion criteria. Differences in study quality, dosing algorithms, length of follow-up and outcome measures limited meta-analysis. Summary estimates revealed no statistically significant difference in bleeding rates or time within the therapeutic range INR. The highest quality study found no significant difference in primary or secondary outcomes, although there was a trend towards more rapid achievement of a stable dose (14.1 vs. 19.6 days, p = 0.07) in the pharmocogenetic arm.

CONCLUSIONS

We did not find sufficient evidence to support the use of pharmacogenetics to guide warfarin therapy. Additional clinical trials are needed to define the optimal approach to use warfarin pharmacogenetics in clinical practice.

The relation of alpha-linolenic acid to the risk of prostate cancer: a systematic review and meta-analysis

BACKGROUND

alpha-Linolenic acid (ALA; 18:3n-3) has been associated inconsistently with an increased risk of prostate cancer. Additional studies have become available since the publication of 2 previous meta-analyses.

OBJECTIVE

The objective was to review the published data on the relation between ALA and prostate cancer.

DESIGN

We conducted a systematic review to identify studies that included data on ALA and risk of prostate cancer. Data were pooled from studies that compared the highest ALA quantile with the lowest ALA quantile, and risk estimates were combined by using a random-effects model.

RESULTS

The relation between ALA and prostate cancer is inconsistent across studies. We pooled data from 8 case-control and 8 prospective studies. The summary estimate revealed that high ALA dietary intakes or tissue concentrations are weakly associated with prostate cancer risk (relative risk [RR]: 1.20; 95% CI: 1.01, 1.43). When examined by study type (ie, retrospective compared with prospective or dietary ALA compared with tissue concentration) or by decade of publication, only the 6 studies examining blood or tissue ALA concentrations revealed a statistically significant association. With the exception of these studies, there was significant heterogeneity and evidence of publication bias. After adjustment for publication bias, there was no association between ALA and prostate cancer (RR: 0.96; 95% CI: 0.79, 1.17).

CONCLUSIONS

Studies examining the relation between ALA and prostate cancer have produced inconsistent findings. High ALA intakes or high blood and adipose tissue concentrations of ALA may be associated with a small increased risk of prostate cancer. However, these conclusions are qualified because of the heterogeneity across studies and the likelihood of publication bias.

Antibiotic and anti-inflammatory use and the risk of prostate cancer

Background

Prostate inflammation or infection may increase the risk of prostate cancer. Antibiotics and non-steroidal anti-inflammatory drugs (NSAIDs) are used to treat prostatitis and urinary tract infections (UTIs). The objective of our study was to assess whether their use decreases the risk of prostate cancer.

Methods

We conducted a case-control study among men with incident prostate cancer (N = 65 cases) and without prostate cancer (N = 195 controls) at the San Francisco Veteran Affairs medical center (VAMC) between June 1996 and June 2006. Cases were all patients who had prostate biopsies positive for cancer. We matched controls to cases on age group and race at a 3:1 ratio, and each matched pair was given an identical index date. Total antibiotic, aspirin, and NSAID use (number of prescriptions) was computed for each participant by drug type and was restricted to a fill date at least 1 year before the index date. Logistic regression was used for analysis. We adjusted for the matching variables (age group and race) and potential confounders (years of VAMC enrollment and number of clinic visits).

Results

Neither total antibiotic use nor total anti-inflammatory use reduces the risk of prostate cancer (P > 0.05).

Conclusion

Our analysis did not reveal a relation between use of antibiotics, aspirin, or NSAIDs and the risk of prostate cancer.

Omega-3 fatty acids for autistic spectrum disorder: a systematic review

We conducted a systematic review to determine the safety and efficacy of omega-3 fatty acids for autistic spectrum disorder (ASD). Articles were identified by a search of MEDLINE, EMBASE, and the Cochrane Database using the terms autism or autistic and omega-3 fatty acids. The search identified 143 potential articles and six satisfied all inclusion criteria. One small randomized controlled trial (n = 13) noted non-significant improvements in hyperactivity and stereotypy. The remaining five studies were small (n = 30, 22, 19, 9, and 1) with four reporting improvements in a wide range of outcomes including language and learning skills, parental observations of general health and behavior, a clinician-administered symptom scale, and clinical observations of anxiety. Due to the limitations of evidence from uncontrolled studies and the presence of only one small randomized controlled trial, there is currently insufficient scientific evidence to determine if omega-3 fatty acids are safe or effective for ASD.

Ca(2+)-calmodulin can activate and inactivate cardiac ryanodine receptors

BACKGROUND AND PURPOSE

Ca(2+)-calmodulin (Ca(2+)CaM) is widely accepted as an inhibitor of cardiac ryanodine receptors (RyR2); however, the effects of physiologically relevant CaM concentrations have not been fully investigated.

EXPERIMENTAL APPROACH

We investigated the effects of low concentrations of Ca(2+)CaM (50-100 nmol.L(-1)) on the gating of native sheep RyR2, reconstituted into bilayers. Suramin displaces CaM from RyR2 and we have used a gel-shift assay to provide evidence of the mechanism underlying this effect. Finally, using suramin to displace endogenous CaM from RyR2 in permeabilized cardiac cells, we have investigated the effects of 50 nmol.L(-1) CaM on sarcoplasmic reticulum (SR) Ca(2+)-release.

KEY RESULTS

Ca(2+)CaM activated or inhibited single RyR2, but activation was much more likely at low (50-100 nmol.L(-1)) concentrations. Also, suramin displaced CaM from a peptide of the CaM binding domain of RyR2, indicating that, like the skeletal isoform (RyR1), suramin directly competes with CaM for its binding site on the channel. Pre-treatment of rat permeabilized ventricular myocytes with suramin to displace CaM, followed by addition of 50 nmol x L(-1) CaM to the mock cytoplasmic solution caused an increase in the frequency of spontaneous Ca(2+)-release events. Application of caffeine demonstrated that 50 nmol x L(-1) CaM reduced SR Ca(2+) content.

CONCLUSIONS AND IMPLICATIONS

We describe for the first time how Ca(2+)CaM is capable, not only of inactivating, but also of activating RyR2 channels in bilayers in a CaM kinase II-independent manner. Similarly, in cardiac cells, CaM stimulates SR Ca(2+)-release and the use of caffeine suggests that this is a RyR2-mediated effect.

Herbal medicine in the United States: review of efficacy, safety, and regulation: grand rounds at University of California, San Francisco Medical Center

INTRODUCTION

Herbal products have gained increasing popularity in the last decade, and are now used by approximately 20% of the population. Herbal products are complex mixtures of organic chemicals that may come from any raw or processed part of a plant, including leaves, stems, flowers, roots, and seeds. Under the current law, herbs are defined as dietary supplements, and manufacturers can therefore produce, sell, and market herbs without first demonstrating safety and efficacy, as is required for pharmaceutical drugs. Although herbs are often perceived as "natural" and therefore safe, many different side effects have been reported owing to active ingredients, contaminants, or interactions with drugs.

RESULTS

Unfortunately, there is limited scientific evidence to establish the safety and efficacy of most herbal products. Of the top 10 herbs, 5 (ginkgo, garlic, St. John's wort, soy, and kava) have scientific evidence suggesting efficacy, but concerns over safety and a consideration of other medical therapies may temper the decision to use these products.

CONCLUSIONS

Herbal products are not likely to become an important alternative to standard medical therapies unless there are changes to the regulation, standardization, and funding for research of these products.

Initial experience with a group presentation of study results to research participants

Background

Despite ethical imperatives, informing research participants about the results of the studies in which they take part is not often performed. This is due, in part, to the costs and burdens of communicating with each participant after publication of the results.

Methods

Following the closeout and publication of a randomized clinical trial of saw palmetto for treatment of symptoms of benign prostatic hyperplasia, patients were invited back to the research center to participate in a group presentation of the study results.

Results

Approximately 10% of participants attended one of two presentation sessions. Reaction to the experience of the group presentation was very positive among the attendees.

Conclusion

A group presentation to research participants is an efficient method of communicating study results to those who desire to be informed and was highly valued by those who attended. Prospectively planning for such presentations and greater scheduling flexibility may result in higher attendance rates.

Trial Registration Number

Clinicaltrials.gov #NCT00037154

Efficacy of short-course antibiotic regimens for community-acquired pneumonia: a meta-analysis

PURPOSE

There is little consensus on the most appropriate duration of antibiotic treatment for community-acquired pneumonia. The goal of this study is to systematically review randomized controlled trials comparing short-course and extended-course antibiotic regimens for community-acquired pneumonia.

METHODS

We searched MEDLINE, Embase, and CENTRAL, and reviewed reference lists from 1980 through June 2006. Studies were included if they were randomized controlled trials that compared short-course (7 days or less) versus extended-course (>7 days) antibiotic monotherapy for community-acquired pneumonia in adults. The primary outcome measure was failure to achieve clinical improvement.

RESULTS

We found 15 randomized controlled trials matching our inclusion and exclusion criteria comprising 2796 total subjects. Short-course regimens primarily studied the use of azithromycin (n=10), but trials examining beta-lactams (n=2), fluoroquinolones (n=2), and ketolides (n=1) were found as well. Of the extended-course regimens, 3 studies utilized the same antibiotic, whereas 9 involved an antibiotic of the same class. Overall, there was no difference in the risk of clinical failure between the short-course and extended-course regimens (0.89, 95% confidence interval [CI], 0.78-1.02). In addition, there were no differences in the risk of mortality (0.81, 95% CI, 0.46-1.43) or bacteriologic eradication (1.11, 95% CI, 0.76-1.62). In subgroup analyses, there was a trend toward favorable clinical efficacy for the short-course regimens in all antibiotic classes (range of relative risk, 0.88-0.94).

CONCLUSIONS

The available studies suggest that adults with mild to moderate community-acquired pneumonia can be safely and effectively treated with an antibiotic regimen of 7 days or less. Reduction in patient exposure to antibiotics may limit the increasing rates of antimicrobial drug resistance, decrease cost, and improve patient adherence and tolerability.