DNA methylation rates scale with maximum lifespan across mammals.

DNA methylation rates have previously been found to broadly correlate with maximum lifespan in mammals, yet no precise relationship has been observed. We developed a statistically robust framework to compare methylation rates at conserved age-related sites across mammals. We found that methylation rates negatively scale with maximum lifespan in both blood and skin. The emergence of explicit scaling suggests that methylation rates are, or are linked to, an evolutionary constraint on maximum lifespan acting across diverse mammalian lineages.

Effects of a Self-directed Web-Based Strengthening Exercise and Physical Activity Program Supported by Automated Text Messages for People With Knee Osteoarthritis: A Randomized Clinical Trial.

Importance: Exercise therapies are advocated in osteoarthritis (OA) clinical guidelines. However, challenges to accessing exercise may be limiting widespread uptake. Objective: To evaluate the effects of a self-directed web-based strengthening exercise and physical activity program supported by automated behavior-change text messages on knee pain and function for people with knee OA. Design, Setting, and Participants: The participant-blinded and assessor-blinded randomized clinical trial enrolled 206 people who met clinical criteria for knee OA in communities across Australia from July 2018 to August 2019, with follow-up taking place at 24 weeks. Interventions: The control group was given access to a custom-built website with information on OA and the importance of exercise and physical activity. The intervention group was given access to the same information plus a prescription for a 24-week self-directed strengthening regimen and guidance to increase physical activity, supported by automated behavior-change text messages encouraging exercise adherence. Main Outcomes and Measures: Primary outcomes were change in overall knee pain (numeric rating scale, 0-10) and difficulty with physical function (Western Ontario and McMaster Universities Osteoarthritis Index, 0-68) over 24 weeks. Secondary outcomes were another knee pain measure, sport and recreation function, quality of life, physical activity, self-efficacy, overall improvement, and treatment satisfaction. Results: Of 206 participants, 180 (87%; mean [SD] age, 60 [8.4] years; 109 [61%] women) completed both 24-week primary outcomes. The intervention group showed greater improvements in overall knee pain (mean difference, 1.6 units; 95% CI, 0.9-2.2 units; P < .001) and physical function (mean difference, 5.2 units; 95% CI, 1.9-8.5 units; P = .002) compared with the control. There was evidence of differences in the proportion of participants exceeding the minimal clinically important improvement in pain (intervention group, 72.1%, vs control, 42.0%; risk difference, 0.30 [95% CI, 0.16-0.44]; P <. 001) and function (intervention group, 68%, vs control, 40.8%; risk difference, 0.27 [95% CI, 0.13-0.41]; P < .001) favoring the intervention. Between-group differences for all secondary outcomes favored the intervention except for physical activity, self-efficacy for function, and self-efficacy for exercise, for which there was no evidence of differences. Conclusions and Relevance: This randomized clinical trial found that a self-directed web-based strengthening exercise regimen and physical activity guidance supported by automated behavior-change text messages to encourage exercise adherence improved knee pain and function at 24 weeks. This unsupervised, free-to-access digital intervention is an effective option to improve patient access to recommended OA exercise and/or to support clinicians in providing exercise management for people with knee OA at scale across the population. Trial Registration: Australian New Zealand Clinical Trials Registry Identifier: ACTRN12618001167257.

Association of Adult Socioeconomic Status with Body Mass Index: A Within- and Between-Twin Study.

Adult socioeconomic status (SES) has been consistently associated with body mass index (BMI), but it is unclear whether it is linked to BMI independently of childhood SES or other potentially confounding factors. Twin studies can address this issue by implicitly controlling for childhood SES and unmeasured confounders. This co-twin control study used cross-sectional data from Twins Research Australia's Health and Lifestyle Questionnaire (N = 1918 twin pairs). We investigated whether adult SES, as measured by both the Index of Relative Socioeconomic Disadvantage (IRSD) and the Australian Socioeconomic Index 2006 (AUSEI06), was associated with BMI after controlling for factors shared by twins within a pair. The primary analysis was a linear mixed-effects model that estimated effects both within and between pairs. Between pairs, a 10-unit increase in AUSEI06 was associated with a 0.29 kg/m2 decrease in BMI (95% CI [-.42, -.17], p < .001), and a 1-decile increase in IRSD was associated with a 0.26 kg/m2 decrease in BMI (95% CI [-.35, -.17], p < .001). No association was observed within pairs. In conclusion, higher adult SES was associated with lower BMI between pairs, but no association was observed within pairs. Thus, the link between adult SES and BMI may be due to confounding factors common to twins within a pair.

Free middle turbinate mucosal graft reconstruction after primary endoscopic endonasal pituitary surgery.

The objective is to assess whether free middle turbinate (FMT) graft reconstruction, after endoscopic endonasal pituitary surgery, combines an acceptably low post-operative cerebrospinal fluid (CSF) leak rate with acceptable rhinological morbidity. This study identified 50 patients who underwent endoscopic endonasal pituitary surgery by the senior author in our teaching hospital between May 2011 and June 2012. FMT graft reconstruction was used in 32 cases. 18 patients were judged pre-operatively as not suitable for FMT reconstruction according to a novel skull base reconstructive algorithm. Outcomes examined were: length of inpatient stay; post-operative CSF leak rate; volume of gross tumour resection; and rhinological morbidity. The rhinological morbidity was measured by the completion of the 22 item sinonasal outcome test (SNOT-22) questionnaire by all 32 patients at 6 weeks and 6 months post-surgery. 32 patients were included in the study. 9 patients had functioning microadenomas and 23 macroadenomas. The median inpatient stay was 2 days. There were no post-operative CSF leaks. The rate of gross tumour resection, confirmed on post-operative MRI, was 87.5 %. The mean SNOT-22 score was 31.9 at 6 weeks and 23.4 at 6 months post-operation-a statistically significant drop. The use of the FMT graft in the reconstruction of the sella defect after endonasal endoscopic pituitary surgery provides a robust dural repair with an acceptable rhinological morbidity profile. FMT grafting as part of a defined skull base reconstructive algorithm results in a CSF leak rate of zero and allows early patient discharge without the need for nasal packing or lumbar drains.

Comparing patients' perspectives of "good care" in Dutch outpatient psychiatric services with academic perspectives of patient-centred care.

BACKGROUND: Over the past six decades, the concept of patient-centred care (PCC) has been discussed in health research, policy and practice. However, research on PCC from a patients' perspective is sparse and particularly absent in outpatient psychiatric services. AIM: to gain insight into what patients with bipolar disorder and ADHD consider "good care" and what this implies for the conceptualisation of PCC. METHOD: A literature review on the different conceptualisations of PCC was complemented with qualitative explorative research on the experiences and needs of adults with ADHD and with bipolar disorder with mental healthcare in the Netherlands using focus group discussions and interviews. RESULTS: The elements addressed in literature are clustered into four dimensions: "patient", "health professional", "patient-professional interaction" and "healthcare organisation". What is considered "good care" by patients coincided with the four dimensions of PCC found in literature and provided refinement of, and preferred emphasis within, the dimensions of PCC. CONCLUSIONS: This study shows the value of including patients' perspectives in the conceptualisation of PCC, adding elements, such as "professionals listen without judgment", "professionals (re)act on the fluctuating course of the disorder and changing needs of patients" and "patients are seen as persons with positive sides and strengths".

'Do I need to become someone else?' A qualitative exploratory study into the experiences and needs of adults with ADHD.

BACKGROUND: Attention deficit/hyperactivity disorder (ADHD) is a common psychiatric disorder in childhood which has recently been acknowledged to persist into adulthood in two-thirds of cases. However, the problems faced by adults with ADHD in their daily lives remain largely unexplored. OBJECTIVE: To assess the perspectives, problems and needs of adults with ADHD. DESIGN AND PARTICIPANTS: In this exploratory qualitative study, adults (n = 52) with a primary ADHD or ADD diagnosis, aged 21 years or older, participated in eight focus groups in five cities in the Netherlands. RESULTS: Although core symptoms of ADHD were perceived as a problem, participants placed greater emphasis on social problems that arise from living with ADHD and their subsequent effects on self-image. Accompanying problems were feelings of powerlessness, lack of acceptance by their social environment and poor self-image. Adults with ADHD would like to see greater acceptance of ADHD and its accompanying problems, together with appreciation for personal competences and strengths in certain domains, such as creative or associative thinking. CONCLUSION: Our study adds to previous research by providing insight into how these problems are interrelated and their strong link to the social environment. Perceived powerlessness, failure and negative reactions of the social environment lead to a persistent low self-image. This merits substantial attention in future research, particularly when considering on-going care options.

Can early second-look tympanoplasty reduce the rate of conversion to modified radical mastoidectomy?

CONCLUSIONS: Combined approach tympanoplasty (CAT) allows for successful treatment of cholesteatoma with rates of recurrent and residual disease comparable to open mastoid surgery. Early timing of second-look procedures allows easier removal of any recurrent or residual disease, which reduces the conversion rate to open mastoidectomy. OBJECTIVES: The aims of the study were to report the rates of recurrent and residual cholesteatoma following primary CAT surgery and to report the rate of conversion to a modified radical mastoidectomy. METHODS: This was a retrospective review of a single surgeon series between 2006 and 2012. RESULTS: In total 132 second-look operations were undertaken, with a mean interval between primary surgery and second-look procedures of 6 months. The rate of cholesteatoma at second-look surgery was 19.7%, which was split into residual disease (10.6%) and recurrent disease (9.09%). New tympanic membrane defects with cholesteatoma were considered as recurrent disease. Residual disease was defined as cholesteatoma present behind an intact tympanic membrane. The majority of recurrent and residual disease was easily removed at second look (73.1%). Only four cases were converted to a modified radical mastoidectomy (3%) and three cases required a third-look procedure.

The epidemiology, management, outcomes and areas for improvement of burn care in central Malawi: an observational study.

This report describes the epidemiology of burn injuries and quantifies the appropriateness of use of available interventions at Kamuzu Central Hospital, Malawi, between July 2008 and June 2009 (370 burn patients). Burns accounted for 4.4% of all injuries and 25.9% of all burns presenting to the hospital were admitted. Most patients (67.6%) were < 15 years old and 56.2% were male. The most frequent cause was scalding (51.4%). Burns occurred most frequently in the cool, dry season and in the evening. The mean burn surface area (second/third degree) was 14.1% and most burns (74%) presented within 8 h. The commonest procedure was debridement and/or amputation. The mean hospital stay was 21.1 days, in-hospital mortality was 27% and wound infection rate was 31%. Available interventions (intravenous fluids, nutrition therapy, physiotherapy) were misapplied in 59% of cases. It is concluded that primary prevention should address paediatric and scald burns, and secondary prevention should train providers to use available interventions appropriately.

An assessment of the validity of tympanometry compared to myringotomy performed under a nitrous oxide-free general anaesthetic.

To assess the validity of tympanometry as a test for the presence of middle ear effusion using a 'gold-standard' of myringotomy performed after a nitrous oxide-free general anaesthetic, we performed a prospective validity study comparing tympanometry traces obtained immediately pre-operatively from patients undergoing grommet insertion, with the otomicroscopic findings at myringotomy. Nitrous oxide was omitted from the anaesthetic gaseous mixture as it has been reported to displace middle ear effusions. One hundred and seventy-two patients (aged 1.5-15 years) with a clinically assessed 3 month history of middle ear effusion were included in the study. Sensitivity and specificity of a Jerger classification Type B tympanometric trace for the presence of middle ear effusion were 0.73 and 0.84, respectively. We conclude that tympanometry is a valid test in assessing the presence of middle ear effusion compared to a 'gold standard' of myringotomy performed after a nitrous oxide-free general anaesthetic.

Middle meningeal artery hemorrhage: an incorrect name.

Extradural hemorrhage is most commonly assumed to result from a middle meningeal artery rupture. This article challenges that assumption. The meningeal vasculature of 29 cadaveric specimens was examined macroscopically and microscopically at the level of the greater wing of the sphenoid bone and foramen spinosum. It was observed that the middle meningeal artery is accompanied by a pair of dural sinuses throughout the majority of its course, thus making exclusively arterial rupture an anatomical improbability. Furthermore, as these dural sinuses pass caudally through the foramen spinosum with the middle meningeal artery, they were seen to diverge to form a plexiform arrangement around the artery. This has not been reported before.

AIDS training and social services.

To be effective, AIDS training must be based on an understanding of the specific requirements of participants. Knowledge, attitudes and behaviour concerning AIDS have been investigated among the general public and a variety of health care professionals, but the needs of Social Services Department personnel have not been directly addressed. This study looked at the relationships between the information possessed by a sample of social work teams, their attitudes, predicted behaviour and self-rated anxiety concerning AIDS. The purpose was to facilitate the planning of an AIDS training course. Results showed significant associations between the possession of more information, positive attitudes, appropriate predicted behaviour, lower self-rated anxiety and social work qualification. Younger people were more likely to be well informed, hold positive attitudes and display appropriate predicted behaviour. The implications for AIDS training for Social Services Department personnel are discussed.