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Objective: To observe the lumen structural changes of radial artery (RA) in patients with transradial coronary intervention and the impact of nitroglycerin on the structure by optical coherence tomography (OCT). Methods: A total of 20 patients with transradial coronary intervention were enrolled for OCT imaging to observe and compare the lumen structures of RA between the basic condition and nitroglycerin treated condition. Results: OCT imaging found that 15/20 patients had radial spasm and 1 had intimal tear. Compared to basic condition, with nitroglycerin treatment, the mean lumen diameter, lumen area and total vascular area were increased in the distal, middle and proximal portion of RA, all P<0.001; the intima-media thickness was decreased in the distal, middle and proximal portion of RA, all P<0.001; while the cross section area of tunica media, intimal thickness and extravascular membrane thickness were similar between the basic condition and nitroglycerin treated condition, all P>0.005. Conclusion: Vasodilatation drug may obviously enlarge RA lumen area and total vascular area in patients after transradial coronary intervention.
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<p><b>BACKGROUND</b>The risk of radial artery occlusion (RAO) needs particular attention in transradial intervention (TRI). Therefore, reducing vascular occlusion has an important clinical significance. The aim of this study was to determine the appropriate puncture site during TRI through comparing the occurrence of RAO between the different puncture sites to reduce the occurrence of RAO after TRI.</p><p><b>METHODS</b>We prospectively assessed the occurrence of RAO in 606 consecutive patients undergoing TRI. Artery occlusion was evaluated with Doppler ultrasound in 2 days and 1 year after the intervention. Risk factors for RAO were evaluated using a multivariate model analysis.</p><p><b>RESULTS</b>Of the 606 patients, the RAO occurred in 56 patients. Compared with TRI at 2-5 cm away from the radius styloid process, the odds ratio (OR) for occlusion risk at 0 cm and 1 cm were 9.65 (P = 0.033) and 8.90 (P = 0.040), respectively. The RAO occurred in the ratio of the arterial diameter to the sheath diameter ≤1 (OR = 2.45, P = 0.004).</p><p><b>CONCLUSION</b>Distal puncture sites (0-1 cm away from the radius styloid process) can lead to a higher rate of RAO.</p><p><b>TRIAL REGISTRATION</b>ClinicalTrials.gov, NCT01979627; https://clinicaltrials.gov/ct2/show/NCT01979627?term = NCT01979627 and rank = 1.</p>
Assuntos
Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Arteriopatias Oclusivas , Cateterismo Cardíaco , Estudos Prospectivos , Punções , Artéria RadialRESUMO
Objective To investigate the inhibition effect of Minocycline on hippocampal microglia in epileptic rats. Methods Forty male SD rats were equally randomized into normal saline control group (NS), penicillin inducement group, Minocycline post-treatment group and Minocycline pre-treatment group (n=10). Rat epilepsy models in the later 3 groups were induced by intraperitoneal injection of penicillin G at a dosage of 740 million to 7.6 million units/kg. The level of hippocampal microglia in rats of the 4 groups on the 1st and 3rd d of inducement was detected by immunofluorescence and the tumor growth factor-α (TNF-α) protein level was detected by Western blotting on the 1st and 3rd d of inducement. Results Seizure could activate microglia. As compared with those in rats of the penicillin inducement group, the activation and hyperplasia of microglia in the hippoeampus in rats of the minoeyeline post- and pre-treatment groups were obviously inhibited on the 1st and 3rd d of inducement (P≤0.05), and the effects were much obvious in the pretreatment group. The level of TNF-α protein in the penicillin inducement group, minoeycline post- and pre-treatment groups was significantly higher than that in the NS group on the 1st and 3rd d of inducement (P≤0.05); as compared with that in the penicillin inducement group, the level of TNF-α protein in the minocycline post- and pre-treatment groups decreased significantly on the 1st and 3rd of inducement (P≤0.05), especially that in the pretreatment group. Conclusion Minocycline can effectively inhibit the activation and hyperplasia of hippocampal microglia and the releasing of inflammatory factor TNF-αt in epileptic rats.