Search results for "YKI"
showing 10 items of 414 documents
Deficiency of plasminogen activator inhibitor 2 in plasma of patients with hereditary angioedema with normal C1 inhibitor levels
2016
Background Hereditary angioedema with normal C1 inhibitor levels (HAE-N) is associated with a Factor XII mutation in 30% of subjects; however, the role of this mutation in the pathogenesis of angioedema is unclear. Objective We sought evidence of abnormalities in the pathways of bradykinin formation and bradykinin degradation in the plasma of patients with HAE-N both with and without the mutation. Methods Bradykinin was added to plasma, and its rate of degradation was measured by using ELISA. Plasma autoactivation was assessed by using a chromogenic assay of kallikrein formation. Plasminogen activator inhibitors (PAIs) 1 and 2 were also measured by means of ELISA. Results PAI-1 levels varie…
Socialt stöd, känsla av ensamhet och psykiska besvär bland finlandssvenska ungdomar
2021
I den här studien utforskades ifall det förekommer sociodemografiska skillnader i upplevelse av psykiska besvär, socialt stöd och känsla av ensamhet bland finlandssvenska ungdomar. Det undersöktes även ifall ungdomarnas upplevelse av psykiska besvär kan förklaras med familje-, kamrat- och klasskamratstöd samt känsla av ensamhet. Utöver det utforskades ifall samband mellan socialt stöd och psykiska besvär kan förklaras med känsla av ensamhet.
 Som datamaterial användes WHO:s skolelevstudie (WHO-Koululaistutkimus) från 2018 med ett deltagarantal på 599 svenskspråkiga elever från årskurs 5, 7 och 9 (Målder = 11,9/14,0/15,9; svarsprocent 38 %). Som statistiska analysmetoder användes Pearso…
The Finnish Clinical Outcome in Routine Evaluation Outcome Measure psychometric exploration in clinical and non-clinical samples
2017
The Clinical Outcomes in Routine Evaluation Outcome Measure (CORE-OM) is a 34-item self-report measure designed to monitor changes in psychiatric patients. It has been translated into 25 languages, including Finnish. This is the first psychometric exploration of Finnish CORE-OM data. The aim of the study is to examine acceptability, internal consistency and convergent validity of the Finnish CORE-OM scores. Translation of the CORE-OM from English to Finnish was undertaken according to recommended protocols. Psychometric exploration was conducted in two samples: psychiatric patients (N = 201) and non-clinical participants (N = 209). Participation was voluntary and involved completion of all …
Treatment of acute edema attacks in hereditary angioedema with a bradykinin receptor-2 antagonist (Icatibant)
2006
Background In hereditary angioedema, bradykinin is assumed to be the most important mediator of edema formation. Objective To assess whether the selective bradykinin receptor-2 antagonist Icatibant is effective in acute edema attacks of hereditary angioedema. Methods In this uncontrolled pilot study, 15 patients with 20 attacks were treated with Icatibant. The attacks were analyzed by using a standardized and validated visual analog scale measurement and compared with historical data of untreated attacks. Plasma bradykinin concentration was measured before and 4 hours after intravenous Icatibant treatment. Results Symptom intensity decreased within 4 hours after administration of Icatibant;…
Thoracoscopic sympathectomy at the T2 or T3 level facilitates bradykinin-induced protein extravasation in human forearm skin.
2010
Background. The endogenous peptide bradykinin (BK) is an inflammatory mediator that induces nociceptor activation and sensitization as well as protein extravasation and vasodilation. Objective. To test the hypothesis if sympathectomy affects BK-induced inflammation in humans. Methods. Dermal microdialysis was employed on the volar forearm in 10 patients (21–41 years) with regional hyperhidrosis before and three months after preganglionic endoscopic transthoracic sympathetic clipping (ETSC) at the T2 or T3 level and in 10 healthy volunteers (22–36 years). After 60 minutes perfusion with Ringer's solution microdialysis fibers were perfused with BK 10−7 M and 10−5 M for 30 minutes followed …
Hereditary Angioedema: Long-Term Treatment with One or More Injections of C1 Inhibitor Concentrate per Week
2009
<i>Background:</i> Hereditary angioedema due to C1 inhibitor deficiency (HAE-C1-INH) is characterized by recurrent edema attacks in various organs. The objective of the present study was to assess the efficacy and safety of weekly long-term replacement treatment with one or more injections of plasma-derived C1-INH concentrate per week (WLTC) in patients with HAE-C1-INH. <i>Methods:</i> Nineteen patients with HAE-C1-INH underwent WLTC for 9 years on average. The benefits and risks were determined based on regular recording by the patients of the severity and number of attacks at the beginning and the end of the study. <i>Results:</i> All patients reported …
The serum protease network—one key to understand complex regional pain syndrome pathophysiology
2019
Complex regional pain syndrome (CRPS) develops after fracture. The acute CRPS phenotype resembles exaggerated inflammation, which is explained by local and systemic activation of a proinflammatory network including peptides and cytokines. Epidemiologic data suggest that inactivation of the peptidase angiotensin-converting enzyme in patients treated for hypertension increases the odds to develop CRPS. This hint leads us to investigate the serum protease network activity in patients with CRPS vs respective controls. For this purpose, we developed a dabsyl-bradykinin (DBK)-based assay and used it to investigate patients with CRPS, as well as healthy and pain (painful diabetic neuropathy [dPNP]…
Kinin receptor status in normal and inflammed gastric mucosa
1997
No documented studies have been reported on the presence of B1 and B2 kinin receptors in the mammalian gastric mucosa. This first study aimed to immunolocalise sites of B1 and B2 kinin receptors in the human pyloric gastric mucosa and to evaluate its role in gastritis. Biopsies were obtained from patients with dyspepsia during endoscopic examination of the patient. The diagnosis and grading of the gastritis was performed on histological examination. Sections were immunostained for both B1 and B2 receptors using rabbit anti-human B1 and B2 kinin receptor antibodies. Control tissue was obtained from partial gastrectomy specimens, following surgical excision of the antrum for duodenal ulcers. …
Na+ ions binding to the bradykinin B2 receptor suppress agonist-independent receptor activation.
1996
Control of the balance between receptor activation and inactivation is a prerequisite for seven transmembrane domain (7TM) receptor function. We asked for a mechanism to stabilize the inactive receptor conformation which prevents agonist-independent receptor activation. Na+ ions have reciprocal effects on agonist versus antagonist interaction with various 7TM receptors. To investigate the Na+ dependence of receptor activation we chose the bradykinin B2 receptor as a prototypic 7TM receptor. Decrease of the intracellular Na+ content from 40 mM to 10 mM of COS-1 cells transiently expressing rat B2 receptors activated the B2 receptor in the absence of agonist as shown by a 3-fold increase in t…
Tachykinin NK(2) receptors facilitate acetylcholine release from guinea-pig isolated trachea.
2000
The release of newly synthesised [3H]acetylcholine was evoked by electrical field stimulation (5 Hz, 600 pulses) of epithelium-deprived guinea-pig trachea strips after sensory neuropeptides depletion with 3 microM capsaicin. The selective tachykinin NK(2) receptor agonist [betaAla(8)]neurokinin A-(4-10) increased in a concentration-dependent manner the electrically-induced release of [3H]acetylcholine. The facilitatory effect was antagonised by the selective non-peptide tachykinin NK(2) receptor antagonist, SR 48968 (apparent pK(B) 8.9). The tachykinin NK(1) and NK(3) receptor agonists substance P methyl ester and senktide (both 10 and 100 nM), respectively, did not affect the evoked releas…