Colchicine inhibits fracture union and reduces bone strength—in vivo study

Introduction: Recent studies have demonstrated that Colchicine (CO) prevents heterotopic ossification (HO) after total hip replacement in patients suffering from familial Mediterranean fever (FMF). Other investigators have proved that CO is an in vitro inhibitor of proliferation of osteoblasts and osteosarcoma cells, and is a non-selective mitosis inhibitor and selective inhibitor of mineralization.Methods: A double blind prospective study comprised four groups of adult rats. The left posterior tibia in each rat was fractured except in one of the control groups. The study groups were treated with CO 1 mg/kg/day 1 week before, or on the fracture day. The control groups did not receive CO treatment. Six weeks after fracture induction the groups were compared radiographically mechanically and histologically.Results: Prolonged CO treatment had a significant negative influence on fracture healing according to radiological, clinical, mechanical (p < 0.02), and pathological parameters (p < 0.0001).Conclusions: We were able to demonstrate that prolonged CO treatment reduced bone healing.     

The impact of assistive technology and environmental interventions on function and living situation status with people who are ageing with developmental disabilities

Purpose : A longitudinal study of 109 people with developmental disabilities, age 35 and older, was done to study the additive impact of mid to later life assistive technology and environmental interventions (AT-EI) on function and living situation status. All subjects were trying to transition out of institutional settings to community settings. Method : Functional status were measured at two times (Time 1 baseline and Time 2 an average of three years post intervention) on 32 functional activities under two conditions: without AT (person only) and with AT (environment adjusted). Rasch analysis was performed to convert ordinal functional scores to equal interval measures, with 95% confidence intervals computed to compare differences in function, with and without AT, across time. Results : Results indicated that over 70% of subjects had better function with AT versus without AT at both time points. Over time, function did not change when rated without AT; however, when rated with AT, 13.6% had better function at Time 2. Subjects living in the community at Time 2 had significantly higher functional scores as compared to subjects in institutions, regardless of AT condition. Additional quantitative and qualitative data on AT-EI use, needs, and barriers and supports to its integration into everyday activities are reported. Conclusions : Results suggest a beneficial impact of later life AT-EI assessment and programming for people who are ageing with developmental disabilities, and qualitatively point to the influence of the social and physical living context upon AT-EI use and relationship to community living decisions long term.     

High incidence of primary cerebral lymphoma in tumor-induced central neurogenic hyperventilation

An awake patient presented with central neurogenic hyperventilation induced by a cerebral tumor. Corticosteroid therapy and brain irradiation while the patient was anesthetized and respiration controlled under pancuronium-induced respiratory paralysis were followed by tumor regression and resolution of hyperventilation. Recurrence of tumor 6 weeks later was not accompanied by recurrence of hyperventilation. Cytologic study of cerebrospinal fluid revealed B-cell lymphoma. This patient brings to 10 the number of cases recorded with tumor-induced central neurogenic hyperventilation. Five of the eight patients with known tumor histology had a primary cerebral lymphoma, a rare neoplasm that comprises only 1% of all intracranial neoplasms. The disproportionately high frequency of central neurogenic hyperventilation in patients with cerebral lymphoma has therapeutic implications that are briefly reviewed.     

The influence of patients' and primary care practitioners' beliefs and expectations about chronic musculoskeletal pain on the process of care: a systematic review of qualitative studies

OBJECTIVES: To review qualitative, empirical studies exploring the influence of patients' and primary care practitioners' beliefs and expectations on the process of care for chronic musculoskeletal pain. METHODS: A multidisciplinary review group searched 9 bibliographic databases. The group worked in pairs to screen titles and abstracts for relevance, to quality appraise relevant studies, to extract data from high-quality studies and to undertake a thematic analysis of this data. RESULTS: We identified 12,994 abstracts from our searches, of which we obtained 113 full-text articles as their abstracts contained insufficient information for us to decide on their eligibility. We appraised 22 qualitative studies, 15 of which were included in the analysis. Themes identified included; (1) beliefs about pain, (2) expectations of treatment, (3) trust, and (4) patient education. Both patients and practitioners wanted clear communication within the consultation and to be respected, but conflicts existed on nearly all other aspects of the consultation, some of which at present may seem insurmountable and may lead to difficulties in achieving positive outcomes. DISCUSSION: To tackle the challenges and conflicts identified within the review, change may have to occur, not just in individual patient and practitioner beliefs and behavior, but also at an organizational and system level, for example, changes in undergraduate and postgraduate education and changes in the organization and availability of health services.     

The relationship between progestin hormonal contraception and depression: a systematic review

Objective

We performed a systematic review to look for an association between progestin-only contraception and depression.

The application of proteomics and genomics to the study of age-related neurodegeneration and neuroprotection

The present study aimed to acquire more information on aging-related alterations, using proteomic and genomic analyses of hippocampus from young (8 months) and old (27 months) rats. In the old rats, the proteomic analysis identified changes in proteins related to the iron-mediated oxidative stress (OS) pathway, including reduction in antioxidant enzymes (e.g., peroxiredoxin, cytochrome c oxidase) and induction of ferritin. Furthermore, the neurofilament light peptide, associated with neurodegenerative processes, was enhanced and binding/ chaperone proteins were altered in old vs. young rats. At the genes levels, significant molecular changes related to neurodegeneration were identified in aged rat hippocampus. Thus, the effects of the potent neuroprotective compounds, the anti-Parkinson drug, rasagiline and the anti-Alzheimer drug, ladostigil (1 mg/kg, for 30 days) on gene expression in the hippocampus were further investigated. Both drugs reversed the effect of aging on the expression of various mitochondrial and key regulator genes involved in neurodegeneration, cell survival, synaptogenesis, oxidation, and metabolism. These results support the hypothesis that OS and mitochondrial dysfunction may play a pivotal role in aging and age-associated neurodegenerative diseases, and can serve as potential clinical targets for future therapy.