26 research outputs found

    Tissue expression of S100 proteins in gallbladder mucosa of the patients with calculous cholecystitis

    Get PDF
    聽Proteins of S100 group, produced by phagocytes represent endogenous activators of innate immune responses. Role of these proteins in the etiopathogenesis of cholelithiasis remains unknown. The studies aimed at the morphometric evaluation of S100A8 and S100A9 protein expression in gallbladder mucosa in patients with acute and chronic calculous cholecystitis (n = 71). The presence of proteins was detected by immunohistochemistry while quantitative analysis employed the spatial visualization technique. We found the immunopositive expression of the two studied S100 proteins in neutrophils and monocytes/macrophages of the gallbladder鈥檚 wall and a higher expression in acute cholecystitis. Quantitative study revealed higher immunoexpression of S100A9 over S100A8 in both studied groups of patients. Moreover, a reciprocal linear relationship between the expression of the studied proteins and a positive correlation between expression of either S100A8 or S100A9 and inflammatory activity (grading) in the gallbladder wall were found. The expression of S100A8 protein in the chronic cholecystitis group and in older patients correlated with leukocytosis, which suggests the role of S100A8 particularly at the chronic stage of cholecystitis. The obtained results indicated close relationship between S100A8 and S100A9 proteins in their proinflammatory functions. The increased expression of only one of them can be recognized as a useful index of local inflammatory activity in calculous cholecystitis.

    Increased morning ADP-dependent platelet aggregation persists despite dual antiplatelet therapy in patients with first ST-segment elevation myocardial infarction: Preliminary report

    Get PDF
    Background: Numerous trials have reported on the morning increase in the occurrence of myocardial infarction, stroke and sudden cardiac death. Similarly, enhanced morning platelet aggregation has been observed in healthy individuals and in subjects with coronary artery disease without adequate antiplatelet treatment. The purpose of the study was to assess circadian variation in platelet aggregation in patients with first ST-elevation myocardial infarction (STEMI) treated with primary percutaneous coronary interventions (pPCI) and dual antiplatelet therapy. Methods: Fifteen consecutive patients (12 men and 3 women) were prospectively recruited into the study. Blood samples were collected at 6.00 a.m., 10.00 a.m., 2.00 p.m. and 7.00 p.m. on the third day of hospitalization. Aggregation in response to arachidonic acid and adenosine diphosphate (ADP) was assessed in the whole blood on a new generation impedance aggregometer. Results: A morning increase of 75% in ADP-dependent platelet aggregation was noted in the study population (p < 0.04). In contrast, we failed to show any significant diurnal variation in arachidonic acid-mediated platelet aggregation. The magnitude of the morning surge in platelet aggregation after ADP stimulation did not correlate with its baseline level. Conclusions: Increased morning ADP-dependent platelet aggregation persists despite dual antiplatelet therapy in patients with first STEMI undergoing pPCI. The clinical significance of this finding remains to be demonstrated

    Diurnal variation in platelet inhibition by clopidogrel

    Get PDF
    Morning increase in the occurrence of myocardial infarction, stroke and sudden cardiac death is a well-recognized phenomenon, which is in line with a morning enhancement of platelet aggregation. We investigated whether platelet inhibition during clopidogrel and aspirin therapy varies during the day. Fifty-nine consecutive patients (45 men and 14 women) with first ST-segment elevation myocardial infarction (STEMI) treated with primary percutaneous coronary interventions (pPCI) on dual antiplatelet therapy were prospectively enrolled into the study. Blood samples were collected 4 days after start of clopidogrel treatment at 6.00 a.m., 10.00 a.m., 2.00 p.m. and 7.00 p.m. Arachidonic acid and adenosine diphosphate (ADP)-induced platelet aggregation were assessed by impedance aggregometry. Platelet inhibition by clopidogrel was lowest in the midmorning: median ADP-induced platelet aggregation was 55%, 17% and 27% higher at 10.00 a.m. compared to 6.00 a.m., 2.00 p.m. and 7.00 p.m., respectively ( p<0.002). Nonresponsiveness to clopidogrel defined according to the device manufacturer was 2.4-fold more frequent in the midmorning than in the early morning. We observed a more pronounced midmorning increase in ADP-induced platelet aggregation in diabetic patients when compared to non-diabetics. In contrast, no diurnal variation in the antiplatelet effect of aspirin was observed. In conclusion, in patients presenting with STEMI undergoing pPCI, platelet inhibition by clopidogrel is less strong in the midmorning hours. This periodicity in platelet aggregation in patients on dual antiplatelet therapy should be taken into consideration when assessing platelet function in clinical studies

    One-year outcomes of left main coronary artery stenting in patients with cardiogenic shock

    Get PDF
    Background: The high in-hospital mortality of patients with cardiogenic shock is being reduced thanks to coronary interventions. The aim of the study was to evaluate the outcomes of angioplasty and stenting in patients with cardiogenic shock caused by left main coronary artery (LMCA) disease. Methods: A group of 71 consecutive patients managed for LMCA disease in an emergency setting (38 patients in cardiogenic shock and 33 without shock symptoms) were followed up clinically and angiographically for one year. Periprocedural and late mortality was assessed as well as the incidence of restenosis and coronary re-interventions. Results: There were 17 deaths in the study population (23.9%). One-year survival in the subgroup with cardiogenic shock was 57.9% (22 patients) with 15 periprocedural deaths and 1 death 3 months after the procedure. Restenosis and associated target lesion revascularization were documented in 5 patients (29.4%) with and 4 patients (16.0%) without cardiogenic shock. Multivariate analysis revealed the following independent predictors of cardiogenic shock in patients undergoing emergency LMCA angioplasty: STEMI as the reason for intervention (OR 14.1; 95% CI 3.71&#8211;53.7; p < 0.0002) and a small minimal lumen diameter before the procedure (OR 0.43; 95% CI 0.2&#8211;0.93; p < 0.04). The only independent predictor of the death in patients with cardiogenic shock was a small minimal lumen diameter after the procedure (OR 0.31; 95% CI 0.1&#8211;0.99, p < 0.05). Conclusions: High mortality was observed in the study population, especially in the subgroup with cardiogenic shock. Most deaths were periprocedural. Because of the high rate of restenosis, periodical angiographic follow-up is necessary, preferably twice in the first 6 months after stent implantation. (Cardiol J 2007; 14: 67&#8211;75

    Wp艂yw wyboru fazy bramkowania na jako艣膰 rekonstruowanych obraz贸w t臋tnic wie艅cowych w wielorz臋dowej spiralnej tomografii komputerowej

    Get PDF
    Background: Motion artifacts caused by cardiac movement disturb the imaging of coronary arteries with multidetector-row spiral computed tomography. The aim of this study was to determine the phase of the heart rate which provides the best quality of coronary artery imaging in retrospective ECG-gated CT. Material/Methods: Forty-five cardiac CT angiograms of 26 patients were retrospectively evaluated. The examinations were performed with a 4-detector-row tomograph. ECG-gated retrospective reconstructions were relatively delayed at 0%, 12.5%, 25%, 37.5%, 50%, 62.5%, 75%, and 87.5% of the cardiac cycle. Selected coronary arteries of the highest diagnostic quality were estimated in the eight phases of the cardiac cycle. Results: Only arteries of very high image quality were selected for analysis: left coronary artery trunks (44 cases, incl. 37 stented), anterior interventricular branches (36, incl. 3 stented), circumflex branches (16), right coronary artery branches (23), and posterior interventricular branches (4). The reconstruction phase had a statistically significant impact on the quality of imaging (p < .0003). Depending on the case, optimal imaging was noted in various phases, except in the 12.5% phase. The 75% phase appeared to be the best of all those examined (p < .05), both in the group of arteries without stents (p < .0006) and in those stented (p < .05). In some cases of repeated examinations the best phases differed within the same patient. Conclusions: Although 75% is usually the best reconstruction phase, the optimal phase should be established individually for the patient, artery, segment, and type of tomograph for the best imaging quality

    Predicted and observed in-hospital mortality after left main coronary artery stenting in 204 patients

    Get PDF
    Background: The purpose of this study was to compare risk predicted using available risk scores and actual outcomes in patients with left main coronary artery disease undergoing percutaneous coronary intervention with stent implantation (PCI LM). Methods: We studied 204 patients treated with elective or emergent coronary angioplasty. We estimated in-hospital mortality using the EuroSCORE, Parsonnet and GRACE risk scores and compared this data with actual in-hospital mortality. Results: There were no deaths among 62 patients undergoing elective PCI LM regardless of the estimated risk. Acute coronary syndrome (ACS) was diagnosed in all 142 patients undergoing emergent PCI LM. Mortality in this group was 24% (34/142). Area under receiver operating characteristic curve (AUC) values for the EuroSCORE, Parsonnet and GRACE risk scores in patients with ACS were 0.812 (p = 0.0001), 0.857 (p = 0.0001), and 0.870 (p = 0.0001), respectively. No statistically significant differences were found when these AUC values for different evaluated risk scores were compared. Overall, the EuroSCORE and Parsonnet risk scores had no discriminative value, as all deaths occurred in the highest risk group. Only the GRACE risk score discriminated risk among intermediate- and high-risk patients with ACS. Conlusions: The EuroSCORE and Parsonnet scoring systems are of no value in predicting periprocedural mortality risk in patients undergoing elective PCI LM. Overall, discriminative ability of the EuroSCORE, Parsonnet, and GRACE risk scores in unselected patients with ACS undergoing emergent PCI LM was good. In this group of patients, the EuroSCORE and Parsonnet scoring systems had no discriminative value in low and moderate risk patients. Only the GRACE risk score discriminated risk among intermediate and high risk patients. (Cardiol J 2008; 15: 268-276

    Ocena wynik贸w inwazyjnego leczenia zw臋偶enia pnia lewej t臋tnicy wie艅cowej u chorych we wstrz膮sie kardiogennym

    Get PDF
    Wst臋p: Wysoka 艣miertelno艣膰 wewn膮trzszpitalna chorych we wstrz膮sie kardiogennym zmniejsza si臋 dzi臋ki stosowaniu terapii interwencyjnej. Celem pracy by艂a ocena wynik贸w leczenia pacjent贸w we wstrz膮sie kardiogennym, spowodowanym chorob膮 pnia lewej t臋tnicy wie艅cowej, za pomoc膮 angioplastyki z implantacj膮 stent贸w. Metody: Grup臋 71 kolejnych os贸b, leczonych ze wskaza艅 nag艂ych z powodu choroby pnia lewej t臋tnicy wie艅cowej (38 we wstrz膮sie kardiogennym podczas przyj臋cia i 33 bez objaw贸w wstrz膮su) poddano rocznej klinicznej i angiograficznej obserwacji. Oceniano 艣miertelno艣膰 oko艂ozabiegow膮 oraz w obserwacji odleg艂ej, a tak偶e cz臋sto艣膰 wyst臋powania restenozy i ponownych interwencji wie艅cowych. Wyniki: W badanej grupie odnotowano 17 zgon贸w (23,9%). Z grupy pacjent贸w ze wstrz膮sem kardiogennym okres 12 miesi臋cy po zabiegu prze偶y艂o 22 chorych (57,9%). U 15 os贸b zgon wyst膮pi艂 w okresie oko艂ozabiegowym, a 1 pacjent zmar艂 po 3 miesi膮cach. Restenoz臋 i zwi膮zan膮 z ni膮 ponown膮 rewaskularyzacj臋 stwierdzono u 5 os贸b (29,4%) ze wstrz膮sem kardiogennym i u 4 os贸b (16,0%) bez wstrz膮su kardiogennego. W analizie wieloczynnikowej do niezale偶nych czynnik贸w predykcyjnych wyst膮pienia wstrz膮su kardiogennego w grupie pacjent贸w poddanych angioplastyce pnia lewej t臋tnicy wie艅cowej w trybie pilnym nale偶a艂y: zawa艂 serca z uniesieniem odcinka ST jako przyczyna zabiegu (OR 14,1; 95% CI 3,71-53,7; p < 0,0002) oraz ma艂y minimalny wymiar 艣wiat艂a przed zabiegiem (OR 0,43; 95% CI 0,2-0,93; p < 0,04). Natomiast jedyny niezale偶ny czynnik predykcyjny zgonu w艣r贸d pacjent贸w ze wstrz膮sem kardiogennym to ma艂y minimalny wymiar 艣wiat艂a po zabiegu (OR 0,31; 95% CI 0,1-0,99, p < 0,05). Wnioski: W badanej populacji stwierdzono du偶膮 艣miertelno艣膰, zw艂aszcza w grupie chorych ze wstrz膮sem kardiogennym. Zgony wyst臋puj膮 najcz臋艣ciej w okresie oko艂ozabiegowym. Ze wzgl臋du na wci膮偶 du偶膮 cz臋sto艣膰 przypadk贸w restenozy konieczne jest przeprowadzanie okresowych kontrolnych bada艅 angiograficznych, najlepiej 2-krotnie w ci膮gu pierwszych 6 miesi臋cy po zabiegu. (Folia Cardiologica Excerpta 2007; 2: 18-26

    Wyniki implantacji stentu do pnia lewej t臋tnicy wie艅cowej u 70 pacjent贸w - ocena kliniczna

    Get PDF
    Wst臋p: Zw臋偶enie pnia lewej t臋tnicy wie艅cowej coraz cz臋艣ciej leczy si臋 za pomoc膮 przezsk贸rnej angioplastyki z implantacj膮 stentu. Celem pracy by艂a ocena wynik贸w terapii z wykorzystaniem tej metody w grupie 70 pacjent贸w. Materia艂 i metody: Badan膮 grup臋 po zabiegu poddano rocznej klinicznej i angiograficznej obserwacji. Oceniano 艣miertelno艣膰 oko艂ozabiegow膮 oraz w obserwacji odleg艂ej oraz cz臋sto艣膰 wyst臋powania restenozy i interwencji wie艅cowych po 3, 6 i 12 miesi膮cach. Wyniki: W badanej grupie odnotowano 12 zgon贸w (17,1%), w tym 11 oko艂ozabiegowo i 1 po 3 miesi膮cach. Wszystkie zgony wyst膮pi艂y u chorych leczonych ze wskaza艅 nag艂ych (29,3%). Stwierdzono 8 przypadk贸w restenozy (14%) w艣r贸d pacjent贸w, kt贸rzy prze偶yli. Zanotowano 16 interwencji wie艅cowych w okresie obserwacji (28% 偶yj膮cych pacjent贸w). Znamiennie cz臋艣ciej obserwowano wyst膮pienie restenozy w przypadku lokalizacji stentu w rozwidleniu LMS z zaopatrzeniem ga艂臋zi mi臋dzykomorowej przedniej i/lub ga艂臋zi okalaj膮cej (27% restenoz w tej grupie vs. 3% w grupie z inn膮 lokalizacj膮). Istotnie cz臋艣ciej restenoz臋 stwierdzano u chorych na cukrzyc臋 (36% tej grupy) ni偶 u os贸b bez cukrzycy (7%). Wnioski: W badanej populacji obserwowano du偶膮 艣miertelno艣膰 w grupie pacjent贸w leczonych ze wskaza艅 nag艂ych. Dobre wyniki dotycz膮ce 艣miertelno艣ci w grupie chorych poddanej planowej terapii (0%) sk艂aniaj膮 do wykonywania elektywnego zabiegu przezsk贸rnej angioplastyki u du偶ej grupy os贸b, z wy艂膮czeniem chorych na cukrzyc臋 oraz z niekorzystn膮 lokalizacj膮 anatomiczn膮 zmiany w LMS. (Folia Cardiol. 2004; 11: 555&#8211;560

    Wszczepienie stentu z powodu jatrogennego rozwarstwienia pnia lewej t臋tnicy wie艅cowej. Obraz przed i po zabiegu w angiografii oraz wielorz臋dowej tomografii komputerowej

    Get PDF
    W pracy przedstawiono przypadek 55-letniego pacjenta z niezauwa偶onym przed 4 laty jatrogennym rozwarstwieniem pnia lewej t臋tnicy wie艅cowej, u kt贸rego (po ustaleniu rozpoznania) wykonano przezsk贸rn膮 angioplastyk臋 z implantacj膮 stentu z dobrym wynikiem bezpo艣rednim oraz w kontrolnym badaniu koronarograficznym po 3 miesi膮cach. U pacjenta przeprowadzono r贸wnie偶 kontroln膮 tomografi臋 komputerow膮 wielorz臋dow膮 serca, kt贸rej wyniki potwierdzono w koronarografii i w angiografii ilo艣ciowej. (Folia Cardiol. 2003; 10: 817&#8211;821
    corecore