Search results for "Generation"
showing 10 items of 3050 documents
Use of a new cross-linked collagen membrane for the treatment of dehiscence-type defects at titanium implants: a prospective, randomized-controlled d…
2009
OBJECTIVES The aim of the present randomized-controlled double-blinded clinical multicenter study was to assess the use of either a new cross-linked (VN) or a native collagen membrane (BG) for the treatment of dehiscence-type defects at titanium implants. MATERIAL AND METHODS A total of n=54 patients were recruited in four German university clinics. According to a parallel-groups design, dehiscence-type defects at titanium implants were filled with a natural bone mineral and randomly assigned to either VN or BG. Submerged sites were allowed to heal for 4 months. Primary (e.g., changes in defect length - DeltaDL, quality of newly formed tissue [0-4] - TQ) and secondary parameters (e.g., memb…
Clinical evaluation of nanocrystalline hydroxyapatite paste in the treatment of human periodontal bony defects--a randomized controlled clinical tria…
2008
The aim of this study was to compare the clinical outcome of intrabony periodontal defects following treatment with a novel nanocrystalline hydroxyapatite (NHA) paste to open flap debridement.Twenty-eight subjects, each displaying one intrabony defect with probing depth (PD)or =6 mm and radiographic evidence of an intraosseous componentor =3 mm participated in the present study. Subjects were allocated randomly to treatment with NHA paste (test group) or open flap debridement (control group). At baseline and at 6 months after surgery, the following clinical parameters were recorded by a masked examiner: plaque index, gingival index, PD, clinical attachment level (CAL), and gingival recessio…
CYP2D6 polymorphism and clinical effect of the antidepressant venlafaxine.
2006
SUMMARY Background: Venlafaxine (V) is a mixed serotoninand noradrenaline reuptake inhibitor used as afirst-line treatment of depressive disorders. It ismetabolized primarily by the highly polymorphiccytochrome P450 (CYP) enzyme CYP2D6 to yielda pharmacologically active metabolite, O-des-methylvenlafaxine (ODV), and to a lesser extentby CYP3A4, to yield N-desmethylvenlafaxine(NDV).Objectives: The aim of this study was to assesswhether the O-demethylation phenotype of V hasan impact on the pharmacokinetics and clinicaloutcome.Method: In 100 patients treated with V, serumconcentrations of V, ODV and NDV and theratios of concentrations ODV/V as a measure ofO-demethylation were determined. Indiv…
Angiotensin converting enzyme has an inhibitory role in CGRP metabolism in human skin
2005
The neutral endopeptidase (NEP) is important for calcitonin gene related peptide (CGRP) degradation, while the role of angiotensin converting enzyme (ACE) remains unclear. By using dermal microdialysis we explored the effect of phosphoramidon (NEP blocker), captopril (ACE blocker) and a mixture of both drugs on the intensity of electrically-induced CGRP-mediated neurogenic flare. The results reveal that phosphoramidon elevated flare intensity, but that this was not further increased by adding captopril. In contrast, neurogenic flare was decreased when the drug mixture was applied in compared to NEP only. Electrically released CGRP levels could be measured directly in perfusates containing p…
Prevalence and associations of diabetic retinopathy in a large cohort of prediabetic subjects: The Gutenberg Health Study
2014
Abstract Aims To evaluate the prevalence of diabetic retinopathy/maculopathy (DR/DMac) and its associations with cardiovascular risk factors (CRF) in participants with prediabetes (PwPD) in a large European cohort within the population-based Gutenberg Health Study (GHS). Methods The study was based on a sub-cohort of the GHS (n=5,000, age: 35–74 y). Prediabetes was diagnosed according to HbA 1c levels (5.7–6.4%). DR/DMac was graded from fundus photographs. Blood samples and comprehensive questionnaires served for evaluation of laboratory results and CRF. Results The prevalence of prediabetes was 22.4%, and of DR/DMac 8.1%/0.2%, respectively. The majority of participants had mild DR (7.2%). …
Serum Concentrations of Fluvoxamine and Clinical Effects: A prospective open clinical trial
1998
This pilot study examined prospectively blood serum concentrations of fluvoxamine, side effects and therapeutic response after a fixed dosage of 100 mg fluvoxamine/day for 14 days. Twenty male and female patients who met the DSM-IV criteria of a major depression received 50 mg fluvoxamine b.i.d. for two weeks. On days 7 and 14 side effects and therapeutic response were registered and serum concentrations of fluvoxamine were determined. A Receiver Operating Characteristic (ROC) curve was constructed to determine a possible relationship between serum concentrations and clinical effects. The serum concentrations of fluvoxamine were highly variable, even when dosages were corrected for body wei…
Early Regeneration of the Remnant Liver Volume after Right Hepatectomy for Living Donation: A Multiple Regression Analysis.
2012
Early liver regeneration was studied in a series of 70 patients who underwent right hepatectomy for living donation between November 2004 and January 2010. Liver regeneration was evaluated with multidetector computed tomography (MDCT) at a mean of 61.07 days after surgery. Presurgical variables [eg, age, weight, height, body mass index (BMI), liver function tests, creatinine levels, platelet counts, international normalized ratio, and glucose levels] and variables detected with preoperative MDCT imaging [eg, main portal vein diameter, steatosis, original liver volume, and spleen volume (SV)] were investigated as potential predictors of liver regeneration. The future remnant liver volume (FR…
Verbal suppression and strategy use: a role for the right lateral prefrontal cortex?
2015
Verbal initiation, suppression and strategy generation/use are cognitive processes widely held to be supported by the frontal cortex. The Hayling Test was designed to tap these cognitive processes within the same sentence completion task. There are few studies specifically investigating the neural correlates of the Hayling Test but it has been primarily used to detect frontal lobe damage. This study investigates the components of the Hayling Test in a large sample of patients with unselected focal frontal (n = 60) and posterior (n = 30) lesions. Patients and controls (n = 40) matched for education, age and sex were administered the Hayling Test as well as background cognitive tests. The sta…
Wilson's disease in Spain: validation of sources of information used by the Rare Diseases Registries
2021
[ES] Objetivo: Evaluar las fuentes de información empleadas por los Registros Autonómicos de Enfermedades Raras (RAER) para la captación de la enfermedad de Wilson en España, calcular su prevalencia y mortalidad, y describir las características sociodemográficas de las personas afectadas. Método: Estudio epidemiológico transversal, periodo 2010-2015. Se captaron los posibles casos mediante los códigos 275.1 (CIE-9-MC), E83.0 (CIE-10) y 905 ORPHA en 15 RAER y el Registro de Pacientes de Enfermedades Raras del Instituto de Salud Carlos III. Los diagnósticos fueron validados revisando la documentación clínica. Se calcularon el valor predictivo positivo (VPP) de las fuentes de información, la p…
A prospective clinical study of polycarboxylate cement in periapical surgery
2011
Objective: To evaluate the clinical efficacy of polycarboxylate cement as retrograde filling material. Design: A prospective clinical study was made of 25 patients subjected to periapical surgery with ultrasound and magnifying loupes, in which polycarboxylate cement was used as retrograde filling material. Measurements were made of the area and diameter of the lesions pre- and postoperatively, and 6 and 12 months after the operation. The apical resection and retrograde filling areas were also measured, and the prognosis following surgery was recorded. Results: A total of 23 patients with 31 apicoectomized teeth were studied (2 patients being lost to follow-up). The mean area of the periapic…