Gender and the use of neuroleptics in schizophrenia

INTRODUCTION: The oestrogen hypothesis proposes that the lower need for neuroleptic drugs in female schizophrenia patients is caused by the antidopaminergic effect of oestrogens, and that when oestrogen production decreases at menopause, the need for neuroleptic drugs increases in female schizophrenia patients. SUBJECTS AND METHOD: The oestrogen hypothesis was tested in a sample of 4338 schizophrenia patients (DSM III R), who were discharged from hospital and followed up for 3 years. Prescribed daily doses of neuroleptics (DDN) were recorded and converted to chlorpromazine equivalents. RESULTS: Males had higher DDN than females. When the age at first admission (AFA) was controlled, DDNs were higher in males than in females in all age groups. In addition to AFA, DDNs were associated with duration of illness (DUI), education, smoking and clinical status as well as with concurrently prescribed antidepressants, anti-manics, sedatives and hypnotics, but these factors did not explain the gender differences in DDN. CONCLUSIONS: The results did not support the original oestrogen hypothesis. It is proposed that testosterone secretion may explain why male schizophrenia patients are prescribed higher DDNs than female patients. Ageing processes in the central nervous system (CNS) may explain why DDNs decrease after middle age in both genders.     

Changes in serum lipoprotein pattern induced by acute infections

To study the effects of acute infections on serum lipids and lipoproteins we measured the concentration and composition of different lipoproteins, apoproteins A-I, A-II, and B, and the activities of plasma postheparin lipolytic enzymes, lipoprotein lipase (LPL) and hepatic lipase (HL) during acute and convalescence phase and after complete recovery in 72 infectious patients (33 with viral infection and 39 with bacterial infection). The mass concentrations of both low density lipoprotein (LDL) (P less than .001) and high density lipoprotein (HDL)2 (P less than .002) were reduced during acute infections due to the lowering of their cholesterol, phospholipid, and protein contents. The reduction of LDL cholesterol was maximal at the acute stage of infection (change -15%, P less than .001) while the reduction of HDL2 cholesterol was maximal during the convalescence (change -35%, P less than .001). During acute infections LDL became triglyceride-enriched (11.8 v 8.6%, P less than .0001) but cholesterol-poor (36.6 v 39.3%, P less than .0001). The ratio of HDL cholesterol/LDL cholesterol was significantly reduced during the convalescence (0.42 +/- 0.15 v 0.53 +/- 0.19, P less than .0001). The concentrations of apo A-I and apo A-II were decreased during acute infections (changes -22%, P less than .001, and -16%, P less than .001, respectively). The very low density lipoprotein (VLDL) was 18% higher during the convalescence period than after the recovery due to the elevations of VLDL triglycerides, cholesterol, and phospholipids. The activity of LPL was reduced both in the acute and convalescence phase, whereas that of HL was reduced only in the acute phase of infections.(ABSTRACT TRUNCATED AT 250 WORDS)     

Expression of activin/inhibin receptor and binding protein genes and regulation of activin/inhibin peptide secretion in human adrenocortical cells

Activins and inhibins are glycoprotein hormones produced mainly in gonads but also in other organs. They are believed to be important para/autocrine regulators of various cell functions. We investigated activin/inhibin receptor and binding protein gene expression and the regulation of activin/inhibin secretion in human adrenal cells. RT-PCR revealed inhibin/activin alpha-, betaA/B-subunit, follistatin, activin type I/II receptor, and inhibin receptor (betaglycan and inhibin-binding protein) mRNA expression in fetal and adult adrenals and cultured adrenocortical cells. Cultured cells secreted activin A and inhibin A/B as determined by specific ELISAs. ACTH stimulated inhibin A/B secretion in fetal (1.8- and 1.8-fold of control, respectively) and in adult cells (3.4- and 1.7-fold of control, respectively) without significant effect on activin A. 8-bromoadenosine cAMP (protein kinase A activator) increased activin A and inhibin A/B secretion in the human adrenocortical NCI-H295R cell line (32-, 17-, and 3-fold of control, respectively). 12-O-tetradecanoyl phorbol-13-acetate (protein kinase C activator) stimulated both activin A and inhibin A secretion (764- and 32-fold of control, respectively), and activin treatment increased inhibin B secretion in these cells (25-fold of control). In conclusion, human adrenocortical cells produce dimeric activins and inhibins. ACTH stimulates inhibin secretion and decreases activin/inhibin secretion ratio, probably via the protein kinase A signal transduction pathway. This, together with the adrenocortical activin/ inhibin receptor and binding protein expression, suggests a physiological role for activins and inhibins in the human adrenal gland.     

Evaluation of phenotypic and molecular methods for screening and detection of methicillin-resistant Staphylococcus aureus

An in-house PCR was compared with the GenoType MRSA and the MRSA EVIGENE tests, both of which corresponded 100% with the results of in-house PCR. The cefoxitin disk diffusion method was superior to both the oxacillin disk diffusion and minimum inhibitory concentration tests for predicting the mecA status.     

Post-operative degree of mobilization at two weeks predicts one-year mortality after hip fracture

BACKGROUND AND AIMS: Although several investigations have tested physical activity a few months or one year after hip fracture, only a few have assessed physical activity shortly after hip fracture. The aim of this study was to evaluate how physical function two weeks after hip fracture operation predicts 12-month mortality. This was a prospective study of hip fracture patients with one-year follow-up, carried out in Jyv?skyl? Central Hospital in Finland. METHODS: In this study, there were 243 consecutive community-dwelling patients aged 65 or older, who were able to walk before hip fracture. Two weeks after operation, information was gathered on pre-fracture activities of daily living (ADLs) and instrumental activities of daily living (IADLs). Patients' ability to stand up, sit down and walk was assessed. The follow-up lasted 12 months. RESULTS: The best predictor for mortality after one year was inability to stand up, hazard ratio (HR) 4.64 (95% CI 2.11-10.18, p < 0.001). The corresponding HRs concerning inability to sit down were 4.52 (95% CI 2.10-9.72, p < 0.001), inability to walk 2.39 (95% CI 1.20-4.78, p = 0.013), ADL score 1.43 (95% CI 1.16-1.76, p = 0.001) and IADL score 1.19 (95% CI 1.03-1.38, p = 0.017). These variables were age- and sex-adjusted. According to the multiple proportional hazard model there was only one variable with statistical significance, i.e., the pre-fracture ADL-score (p = 0.025). CONCLUSION: Inability to stand up, sit down or walk two weeks after operation were the strongest predictors for mortality among operated hip fracture patients. We suggest that focus should be directed to verify if better survival might be achieved by more intensive rehabilitation immediately after the operation. The pre-fracture ADL-score appeared to be the only variable reaching statistical significance in the multiple proportional hazard model. This fact may reflect frailty and affect decisions concerning the rehabilitation program.     

Single-objective high-resolution confocal light sheet fluorescence microscopy for standard biological sample geometries

Three-dimensional fluorescence-based imaging of living cells and organisms requires the sample to be exposed to substantial excitation illumination energy, typically causing phototoxicity and photobleaching. Light sheet fluorescence microscopy dramatically reduces phototoxicity, yet most implementations are limited to objective lenses with low numerical aperture and particular sample geometries that are built for specific biological systems. To overcome these limitations, we developed a single-objective light sheet fluorescence system for biological imaging based on axial plane optical microscopy and digital confocal slit detection, using either Bessel or Gaussian beam shapes. Compared to spinning disk confocal microscopy, this system displays similar optical resolution, but a significantly reduced photobleaching at the same signal level. This single-objective light sheet technique is built as an add-on module for standard research microscopes and the technique is compatible with high-numerical aperture oil immersion objectives and standard samples mounted on coverslips. We demonstrate the performance of this technique by imaging three-dimensional dynamic processes, including bacterial biofilm dispersal, the response of biofilms to osmotic shocks, and macrophage phagocytosis of bacterial cells.     

Effects of individual dietary counseling as part of a comprehensive geriatric assessment (CGA) on frailty status: A population-based intervention study

Background/PurposeIn this study, our aim was to evaluate the effects of individual dietary counseling as part of a comprehensive geriatric assessment (CGA) on frailty status among community-dwelling people aged 75 years or older.MethodsData were obtained from a subpopulation of participants in the population-based Geriatric Multidisciplinary Strategy for the Good Care of the Elderly (GeMS) intervention study in 2004 to 2007. In the present study, the population consisted of 159 persons at risk of malnutrition in the year 2005 in an intervention and a control group. Nutritional status was assessed with the Mini Nutritional Assessment (MNA). Frailty was defined according to the five frailty criteria used in the Cardiovascular Health Study (CHS). Assessment of nutritional status and frailty status was performed at the beginning of the study and at 1-year follow-up.ResultsAt baseline the mean age of the 159 community-dwelling participants with risk of malnutrition was 83 years and 126 (79%) of them were female. The proportions of frail and pre-frail persons were 25% (n = 19) and 61% (n = 47) in the intervention group, and 26% (n = 21) and 61% (n = 50) in the control group. After the 1-year nutritional intervention, compared to the control group, the intervention group tended to have a better outcome of frailty and MNA (OR = 1.89, 95% CI: 1.08–3.54, OR = 2.61, 95% CI: 1.67–5.56, respectively) and was less likely to deteriorate as assessed with MNA (OR = 0.23, 95% CI: 0.14–0.87). In multivariate analysis, change in MNA (OR = 1.12, 95% CI: 1.03–1.31) was associated independently with improved frailty status.ConclusionIt appears that multidisciplinary geriatric assessment including individual dietary counseling has a positive effect on frailty status. More emphasis on good nutrition in the older population might have a preventive effect on the incidence of frailty.     

Alcohol use and smoking in burn patients at the Helsinki Burn Center

Objective

We investigated alcohol use and smoking at time of burn and their relationships with severity of burn and presence of mental disorders.

Heterogeneity and Classification of Recent Onset Psychosis and Depression: A Multimodal Machine Learning Approach

Diagnostic heterogeneity within and across psychotic and affective disorders challenges accurate treatment selection, particularly in the early stages. Delineation of shared and distinct illness features at the phenotypic and brain levels may inform the development of more precise differential diagnostic tools. We aimed to identify prototypes of depression and psychosis to investigate their heterogeneity, with common, comorbid transdiagnostic symptoms. Analyzing clinical/neurocognitive and grey matter volume (GMV) data from the PRONIA database, we generated prototypic models of recent-onset depression (ROD) vs. recent-onset psychosis (ROP) by training support-vector machines to separate patients with ROD from patients with ROP, who were selected for absent comorbid features (pure groups). Then, models were applied to patients with comorbidity, ie, ROP with depressive symptoms (ROP+D) and ROD participants with sub-threshold psychosis-like features (ROD+P), to measure their positions within the affective-psychotic continuum. All models were independently validated in a replication sample. Comorbid patients were positioned between pure groups, with ROP+D patients being more frequently classified as ROD compared to pure ROP patients (clinical/neurocognitive model: χ² = 14.874; P < .001; GMV model: χ² = 4.933; P = .026). ROD+P patient classification did not differ from ROD (clinical/neurocognitive model: χ² = 1.956; P = 0.162; GMV model: χ² = 0.005; P = .943). Clinical/neurocognitive and neuroanatomical models demonstrated separability of prototypic depression from psychosis. The shift of comorbid patients toward the depression prototype, observed at the clinical and biological levels, suggests that psychosis with affective comorbidity aligns more strongly to depressive rather than psychotic disease processes. Future studies should assess how these quantitative measures of comorbidity predict outcomes and individual responses to stratified therapeutic interventions.