Aerobic training for older men with Alzheimer's disease: individual examples of progression

Little is known about cardiorespiratory fitness and aerobic exercise training in older adults with Alzheimer's disease (AD). The purposes of this article are to describe the change in cardiorespiratory fitness after 2 months of aerobic training and the feasibility of aerobic training in 4 men with moderate-to-severe AD. A one-group, pretest-posttest test design was used to measure cardiorespiratory fitness using symptom limited, graded cycle ergometer testing. In exit interviews, participants and spouses identified exercise facilitators and barriers. The results show that cardiorespiratory fitness increased in 2 participants with moderate AD but decreased in 2 with severe AD. Participants showed great variability in exercise progression and doses actually delivered. In conclusion, older men with moderate-to-severe AD can engage in aerobic training. Two months might be better used as the adaptive period for longer duration aerobic training, such as a 6-month program. Suggestions and implications for future exercise research in AD are detailed.     

The experience of community-living women managing fecal incontinence

Although many women suffer from fecal incontinence (FI), little is known about their day-to-day experiences. The aims of this phenomenological study were to understand the experience of women living with FI from their perspective and to elicit women's self-care and management strategies for FI. Ten women participated in audiotaped, unstructured interviews that were transcribed into a written text. The text was analyzed using Van Manen's approach for deriving themes. The findings display the women's experience of lived time, lived space, lived relationships, and lived body and the essential theme of "controlling the body out of control." The findings demonstrate that FI is a problem that affects women in all dimensions of their lifeworld experience and describes the continual attention and self-management FI requires.     

Primary headache and sleep disturbances in adolescents

OBJECTIVE: The aim of the present study was to assess sleep patterns and the prevalence of sleep problems in adolescents with primary headaches using a validated sleep screening instrument, as well as to test the association between headache and pain features and adolescent sleep behaviors. BACKGROUND: Sleep disturbance is a common complaint that has long been associated with primary headaches, but there exists limited evidence of the headache-sleep relationship among teens. METHODS: Sixty-nine adolescents aged 13 to 17 years (M= 14.7; SD= 1.4) were evaluated for headaches at 2 pediatric neurology departments (90% migraine; 10% tension-type headache diagnoses). Participants completed the School Sleep Habits Questionnaire and a standardized questionnaire regarding headache characteristics. RESULTS: Sleep complaints were prevalent among adolescents with headaches including insufficient total sleep (65.7%), daytime sleepiness (23.3%), difficulty falling asleep (40.6%), and night wakings (38%). Statistically significant relationships between headache characteristics (eg, frequency, pain intensity) and teen sleep behaviors also emerged. CONCLUSIONS: Our findings provide further support for an association between headache and sleep disturbances among adolescents with primary headaches. This information may provide further understanding of the nature and course of the patient's headache experience, as well as facilitate treatment planning to include recommendations for promoting good sleep hygiene.     

Objective and subjective assessment of sleep in adolescents with chronic pain compared to healthy adolescents

OBJECTIVES: The purpose of this study was to compare sleep of adolescents with chronic pain and healthy adolescents using both subjective and objective sleep assessments, and to identify correlates of poor sleep. METHODS: Forty adolescents (n=20 with chronic pain and n=20 healthy adolescents), aged 12 to 17 years (72.5% female) participated. Adolescents completed self-report measures of pain, sleep quality and hygiene, presleep arousal/worry, and depressive symptoms. Sleep patterns were assessed over 7 consecutive days using an actigraph, a motion-monitoring device detecting sleep-wake patterns by measuring activity levels. Total sleep time, sleep efficiency, wake time, and wake bouts were derived from the actigraph and aggregated for analysis. RESULTS: Compared with healthy peers, adolescents with chronic pain demonstrated similar total sleep time as healthy adolescents, but significantly poorer sleep. In particular, adolescents with chronic pain subjectively reported poorer sleep quality and increased insomnia symptoms, and demonstrated lower actigraphic sleep efficiency and more wake bouts compared with their healthy peers. Depressive symptoms and worry at bedtime were significant predictors of subjectively reported sleep quality but not of actigraphic sleep. DISCUSSION: Adolescents with chronic pain evidenced poorer sleep quality, increased insomnia symptoms, and less efficient sleep with more wake bouts in comparison with healthy adolescents, findings that require replication in a larger sample. Assessment and management of sleep disturbances is an important aspect of care for children and adolescents with chronic pain.     

Working in partnership with adult informal carers: policy and practice

In England and Wales alone, more than 5 million informal carers provide support to individuals who wish to remain within their own homes. However, research has identified that there is a limited understanding of the informal carer role among health professionals, and deficits in information sharing and the involvement of informal carers in decision making in relation to care packages. This article considers recent policy relating to this area, placing particular emphasis on the role of the district nurse in working in partnership with informal carers.     

HFSA/SAEM/ISHLT Clinical Expert Consensus Document on the Emergency Management of Patients with Ventricular Assist Devices

Mechanical circulatory support is now widely accepted as a viable long-term treatment option for patients with end-stage heart failure (HF). As the range of indications for the implantation of ventricular assist devices grows, so does the number of patients living in the community with durable support. Because of their underlying disease and comorbidities, in addition to the presence of mechanical support, these patients are at a high risk for medical urgencies and emergencies (Table 1). Thus, it is the responsibility of clinicians to understand the basics of their emergency care. This consensus document represents a collaborative effort by the Heart Failure Society of America, the Society for Academic Emergency Medicine, and the International Society for Heart and Lung Transplantation (ISHLT) to educate practicing clinicians about the emergency management of patients with ventricular assist devices. The target audience includes HF specialists and emergency medicine physicians, as well as general cardiologists and community-based providers.     

Characterization of the thyrotropin binding pocket.

A panel of monoclonal antibodies (mAbs) to the thyrotropin receptor (TSHR) was prepared using three different immunization strategies. The mAbs obtained (n = 138) reacted with linear epitopes covering most of the TSHR extracellular domain and with conformational epitopes. mAbs that bound to five different regions of the TSHR (amino acids [aa] 32-41, aa 36-42, aa 246-260, aa 277-296, and aa 381-385) were able to inhibit (125)I-labeled thyrotropin (TSH) binding to solubilized TSHR preparations. Fab and immunoglobulin G (IgG) preparations were similarly effective inhibitors for mAbs reactive with aa 246-260, aa 277-291 and aa 381-385 suggesting that these three regions of the TSHR are involved in TSH binding. In contrast mAbs reactive with aa 32-41 and aa 36-42 were not effective at inhibiting TSH binding when Fab preparations were used, suggesting that these N terminal regions of the TSHR were less critical for TSH binding. Our studies suggest that three distinct and discontinuous regions of the TSHR (aa 246-260 and 277-296 on the TSHR A subunit) and aa 381-385 (on the TSHR B subunit) fold together to form a complex TSH binding pocket. Alignment of the aa sequences of these three regions in TSHRs from different species indicates that they are highly conserved.     

Longitudinal Course and Impact of Insomnia Symptoms in Adolescents With and Without Chronic Pain

This study aimed to 1) examine trajectories of insomnia symptoms in adolescents with chronic pain compared to their healthy peers; 2) evaluate psychological and behavioral risk factors for longitudinal insomnia symptoms; and 3) evaluate insomnia as a predictor of quality of life, activity limitations, and healthcare utilization over 12 months. Participants included 61 adolescents with chronic pain and 60 youths without chronic pain (12–18 years; 72% female). Questionnaires were completed at enrollment, 6 months, and 12 months and assessed pain intensity, insomnia symptoms, sleep hygiene, presleep arousal, depression, pubertal status, activity limitations, quality of life, and healthcare utilization. Insomnia symptoms persisted for both groups and remained higher at all time points for youths with chronic pain. Generalized estimating equations modeling identified 3 risk factors for longitudinal insomnia symptoms: having chronic pain, poorer sleep hygiene, and higher depressive symptoms. Insomnia symptoms also predicted poorer quality of life over time and were associated with more frequent healthcare utilization. Findings suggest that sleep problems are persistent and associated with negative impact for youths with chronic pain. Treatment of insomnia symptoms in youths with chronic pain may lead to improvements in quality of life and reductions in healthcare costs.     

MTHFR 677C --> T genotype disrupts prefrontal function in schizophrenia through an interaction with COMT 158Val --> Met

Understanding how risk genes cumulatively impair brain function in schizophrenia could provide critical insights into its pathophysiology. Working memory impairment in schizophrenia has been associated with abnormal dopamine signaling in the prefrontal cortex, which is likely under complex genetic control. The catechol-O-methyltransferase (COMT) 158Val → Met polymorphism (rs4680), which affects the availability of prefrontal dopamine signaling, consistently stratifies prefrontal activation during working memory performance. However, the low-dopamine COMT 158Val allele does not confer increased risk for schizophrenia, and its effects on prefrontal function are not specific to the disorder. In the setting of other genetic variants influencing prefrontal dopamine signaling, COMT 158Val → Met genotype may exert disease-specific effects. A second polymorphism, methylenetetrahydrofolate reductase (MTHFR) 677C → T (rs1801133), has been associated with overall schizophrenia risk and executive function impairment in patients, and may influence dopamine signaling through mechanisms upstream of COMT effects. We found that the hypofunctional 677T variant was associated with decreased working memory load-dependent activation in the prefrontal and insular cortices in 79 schizophrenia patients, but not in 75 demographically matched healthy controls. Further, significant MTHFR × COMT genotype interactions were observed, which differed by diagnostic group: Reduced prefrontal activation was associated with the 677T and 158Val alleles in patients, but with 677C/C and 158Met/Met genotype in controls. These findings are consistent with epistatic effects of the COMT and MTHFR polymorphisms on prefrontal dopamine signaling, and suggest that in schizophrenia patients, the MTHFR 677T allele exacerbates prefrontal dopamine deficiency. The findings also suggest the importance of weighing COMT effects on prefrontal function within the context of MTHFR genotype.