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James Deschner Birgit Rath-Deschner Susanne Reimann Christoph Bourauel Werner Gtz Soeren Jepsen Andreas Jger 《Annals of anatomy》2007,189(4):326-328
Recent studies have revealed that dynamic biomechanical forces can exert antiinflammatory and antiproteolytic effects on fibrocartitage. Whether the effects of mechanical strain also involve stimulation of the insulin-like growth factor (IGF) system and, therefore, of growth and repair of fibrocartilage has yet to be determined. The objective of this in vitro study was to determine if continuous biophysical strain regulates the gene expression of IGF1, IGF2, IGF1 receptor (IGF1R), insulin receptor substrate (IRS1), and IGF-binding proteins (IGFBP) 3 and 5 in cells from the fibrocartilaginous disc of the temporomandibular joint (TMJ). Rat TMJ disc cells were subjected to continuous biophysical strain (3% and 20%) for 4 and 24 h. Subsequently, RNA was extracted and real-time PCR was performed using an iCycler iQ detection system to analyze the gene expression of the IGF system. The gene expression of IGF1, IGF2, IGF1R, IRS1, IGFBP3, and IGFBP5 was significantly (p < 0.05) inhibited when cells were subjected to continuous biophysical strain, as compared to control at both time points. High strain induced a stronger inhibition of these molecules as compared to strain of Low magnitude. In conclusion, continuous biophysical strain seems to downregulate the expression of the IGF system and may, therefore, reduce the potential of fibrocartilage for growth and repair. 相似文献
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Runa Munkner Soeren Haastrup Torben Joergensen Peter Kramp 《Nordic journal of psychiatry》2013,67(2):124-131
Patients with schizophrenia have been shown to have an increased risk of criminality. The aim was to describe possible psychopathological differences between schizophrenia spectrum patients with and without a criminal career before first-episode psychosis. In a multi-centre study, 16 psychiatric treatment centres included and rated 477 patients with first-episode psychosis over a 2-year period on socio-demography, the Positive and Negative Syndrome Scale, OPerational CRITeria checklist, Global Assessment of Functioning, Premorbid Adjustment Scale and Self-report Insight Scale for psychosis. Data were linked with data concerning criminal and psychiatric history. No key characteristics were found to assist the early detection of criminal persons before first psychiatric hospital contact for a psychotic incident. However, when adjusted for sex, age, abuse, living conditions, marital status, employment status and education, a primarily positive symptomatology was associated with a prior criminal career. The premorbid level of functioning and several function parameters were also significantly associated with criminal history. There are significant differences in psychopathology between schizophrenia spectrum patients with and without a criminal career before first-episode psychosis, and a better screening procedure in the judicial system could detect these individuals earlier and make adequate treatment possible. 相似文献
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Schultze-Mosgau A Griesinger G Altgassen C von Otte S Hornung D Diedrich K 《Expert opinion on investigational drugs》2005,14(9):1085-1097
Gonadotropin-releasing hormone (GnRH) stimulates the pituitary secretion of both luteinising hormone (LH) and follicle-stimulating hormone (FSH), and thus controls the hormonal and reproductive functions of the gonads. The blockade of the effects of GnRH may be sought for a variety of reasons; for example, to control premature LH surges and to reduce the cancellation rate with the aim of improving the pregnancy rate per treatment cycle or in the treatment of sex hormone-dependent disorders. Selective blockade of LH/FSH secretion and subsequent chemical castration have previously been achieved by desensitising the pituitary to continuously administered GnRH or by giving long-acting GnRH agonists. GnRH analogues are indicated for clinical situations in which the suppression of endogenous gonadotropins (precocious puberty, contraception and controlled ovarian hyperstimulation) or sexual steroids (endometriosis, prostate hyperplasia, cancer and uterine fibroids) is desired. The immediate suppression of the pituitary that is achieved by GnRH antagonists without an initial stimulatory effect is the main advantage of these compounds over the agonists. GnRH antagonists have been developed for clinical use with acceptable pharmacokinetic, safety and commercial profiles. In assisted reproduction, these compounds seem to be as effective as established therapy, but with shorter treatment times, less use of gonadotropic hormones, improved patient acceptance, and fewer follicles and oocytes. All of the current indications for GnRH agonist desensitisation may prove to be indications for a GnRH antagonist, including endometriosis, leiomyoma and breast cancer in women, benign prostatic hypertrophy and prostatic carcinoma in men, and central precocious puberty in children. However, the best clinical evidence has been in assisted reproduction and prostate cancer. 相似文献
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In a recently concluded Medicare demonstration, Community Nursing Organizations (CNOs) received capitated payment to provide a subset of Medicare services through a nursing case management delivery system. Demonstration participation was voluntary, both for CNOs and recruited beneficiaries, raising several challenging issues associated with selection. We investigate provider and beneficiary selection, as well as Medicare costs, using multiple evaluation methodologies. We find that CNO enrollment is associated with increased payment by Medicare for CNO-covered services. Results showing CNO enrollees to be more costly to Medicare for non-CNO services are consistent with cost shifting, but could also be accounted for by biased provider selection into the demonstration. 相似文献
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