Background and Objectives: Cigarette smoking is a major risk factor for atherosclerosis.Nicotine, a crucial constituent of tobacco, contributes to atherosclerosis development and progression. However, evidence of the association between nicotine and neointima formation is limited. We aimed to evaluate whether nicotine enhances neointimal hyperplasia in the native epicardial coronary arteries of pigs after percutaneous coronary intervention (PCI) with drug-eluting stents (DES). Methods: After coronary angiography (CAG) and quantitative coronary angiography (QCA), we implanted 20 DES into 20 pigs allocated to 2 groups: no-nicotine (n=10) and nicotine (n=10) groups. Post-PCI CAG and QCA were performed immediately. Follow-up CAG, QCA, optical coherence tomography (OCT), and histopathological analyses were performed 2 months post-PCI. Results: Despite intergroup similarities in the baseline QCA findings, OCT analysis showed that the nicotine group had a smaller mean stent and lumen areas, a larger mean neointimal area, greater percent area stenosis, and higher peri-strut fibrin and inflammation scores than the no-nicotine group. In immunofluorescence analysis, the nicotine group displayed higher expression of CD68 and α-smooth muscle actin but lower CD31 expression than the no-nicotine group. Conclusions Nicotine inhibited re-endothelialization and promoted inflammation and NIH after PCI with DES in a porcine model.

Background and Objectives: Cigarette smoking is a major risk factor for atherosclerosis.Nicotine, a crucial constituent of tobacco, contributes to atherosclerosis development and progression. However, evidence of the association between nicotine and neointima formation is limited. We aimed to evaluate whether nicotine enhances neointimal hyperplasia in the native epicardial coronary arteries of pigs after percutaneous coronary intervention (PCI) with drug-eluting stents (DES). Methods: After coronary angiography (CAG) and quantitative coronary angiography (QCA), we implanted 20 DES into 20 pigs allocated to 2 groups: no-nicotine (n=10) and nicotine (n=10) groups. Post-PCI CAG and QCA were performed immediately. Follow-up CAG, QCA, optical coherence tomography (OCT), and histopathological analyses were performed 2 months post-PCI. Results: Despite intergroup similarities in the baseline QCA findings, OCT analysis showed that the nicotine group had a smaller mean stent and lumen areas, a larger mean neointimal area, greater percent area stenosis, and higher peri-strut fibrin and inflammation scores than the no-nicotine group. In immunofluorescence analysis, the nicotine group displayed higher expression of CD68 and α-smooth muscle actin but lower CD31 expression than the no-nicotine group. Conclusions Nicotine inhibited re-endothelialization and promoted inflammation and NIH after PCI with DES in a porcine model.

Background and Objectives: Cigarette smoking is a major risk factor for atherosclerosis.Nicotine, a crucial constituent of tobacco, contributes to atherosclerosis development and progression. However, evidence of the association between nicotine and neointima formation is limited. We aimed to evaluate whether nicotine enhances neointimal hyperplasia in the native epicardial coronary arteries of pigs after percutaneous coronary intervention (PCI) with drug-eluting stents (DES). Methods: After coronary angiography (CAG) and quantitative coronary angiography (QCA), we implanted 20 DES into 20 pigs allocated to 2 groups: no-nicotine (n=10) and nicotine (n=10) groups. Post-PCI CAG and QCA were performed immediately. Follow-up CAG, QCA, optical coherence tomography (OCT), and histopathological analyses were performed 2 months post-PCI. Results: Despite intergroup similarities in the baseline QCA findings, OCT analysis showed that the nicotine group had a smaller mean stent and lumen areas, a larger mean neointimal area, greater percent area stenosis, and higher peri-strut fibrin and inflammation scores than the no-nicotine group. In immunofluorescence analysis, the nicotine group displayed higher expression of CD68 and α-smooth muscle actin but lower CD31 expression than the no-nicotine group. Conclusions Nicotine inhibited re-endothelialization and promoted inflammation and NIH after PCI with DES in a porcine model.

Background and Objectives: Cigarette smoking is a major risk factor for atherosclerosis.Nicotine, a crucial constituent of tobacco, contributes to atherosclerosis development and progression. However, evidence of the association between nicotine and neointima formation is limited. We aimed to evaluate whether nicotine enhances neointimal hyperplasia in the native epicardial coronary arteries of pigs after percutaneous coronary intervention (PCI) with drug-eluting stents (DES). Methods: After coronary angiography (CAG) and quantitative coronary angiography (QCA), we implanted 20 DES into 20 pigs allocated to 2 groups: no-nicotine (n=10) and nicotine (n=10) groups. Post-PCI CAG and QCA were performed immediately. Follow-up CAG, QCA, optical coherence tomography (OCT), and histopathological analyses were performed 2 months post-PCI. Results: Despite intergroup similarities in the baseline QCA findings, OCT analysis showed that the nicotine group had a smaller mean stent and lumen areas, a larger mean neointimal area, greater percent area stenosis, and higher peri-strut fibrin and inflammation scores than the no-nicotine group. In immunofluorescence analysis, the nicotine group displayed higher expression of CD68 and α-smooth muscle actin but lower CD31 expression than the no-nicotine group. Conclusions Nicotine inhibited re-endothelialization and promoted inflammation and NIH after PCI with DES in a porcine model.

Purpose: This study evaluated the effects of the Spinning Babies program applied during labor on birth outcomes and satisfaction among pregnant women. Methods: This non-equivalent control group, non-synchronized post-test only design study included 42 participants (22 in the experimental group and 20 in the control group). The Spinning Babies program was conducted four times in the experimental group during the first and second stages of delivery for 50 min per session. The program comprised performing pelvic circles on a birth ball, followed by wide squatting and adopting of open knee-chest and side-lying positions. Results: Compared with those in the control group, pregnant women in the experimental group had a significantly shorter labor time (t = - 6.64, p < .001), a higher success rate for normal vaginal delivery (χ2 = 4.86, p = .043), improved Apgar scores of newborns (z2 = - 2.18, p = .029), differences in neonatal oxygen therapy use (χ2 = 4.86, p = .043), and improved birth satisfaction (t = 11.99, p < .001). Conclusion The Spinning Babies program improves the birth environment by increasing the normal vaginal delivery success rate, as well as pregnant women’s birth satisfaction, and promotes neonatal health.

Purpose: This study evaluated the effects of the Spinning Babies program applied during labor on birth outcomes and satisfaction among pregnant women. Methods: This non-equivalent control group, non-synchronized post-test only design study included 42 participants (22 in the experimental group and 20 in the control group). The Spinning Babies program was conducted four times in the experimental group during the first and second stages of delivery for 50 min per session. The program comprised performing pelvic circles on a birth ball, followed by wide squatting and adopting of open knee-chest and side-lying positions. Results: Compared with those in the control group, pregnant women in the experimental group had a significantly shorter labor time (t = - 6.64, p < .001), a higher success rate for normal vaginal delivery (χ2 = 4.86, p = .043), improved Apgar scores of newborns (z2 = - 2.18, p = .029), differences in neonatal oxygen therapy use (χ2 = 4.86, p = .043), and improved birth satisfaction (t = 11.99, p < .001). Conclusion The Spinning Babies program improves the birth environment by increasing the normal vaginal delivery success rate, as well as pregnant women’s birth satisfaction, and promotes neonatal health.

Purpose: This study evaluated the effects of the Spinning Babies program applied during labor on birth outcomes and satisfaction among pregnant women. Methods: This non-equivalent control group, non-synchronized post-test only design study included 42 participants (22 in the experimental group and 20 in the control group). The Spinning Babies program was conducted four times in the experimental group during the first and second stages of delivery for 50 min per session. The program comprised performing pelvic circles on a birth ball, followed by wide squatting and adopting of open knee-chest and side-lying positions. Results: Compared with those in the control group, pregnant women in the experimental group had a significantly shorter labor time (t = - 6.64, p < .001), a higher success rate for normal vaginal delivery (χ2 = 4.86, p = .043), improved Apgar scores of newborns (z2 = - 2.18, p = .029), differences in neonatal oxygen therapy use (χ2 = 4.86, p = .043), and improved birth satisfaction (t = 11.99, p < .001). Conclusion The Spinning Babies program improves the birth environment by increasing the normal vaginal delivery success rate, as well as pregnant women’s birth satisfaction, and promotes neonatal health.

Purpose: This study evaluated the effects of the Spinning Babies program applied during labor on birth outcomes and satisfaction among pregnant women. Methods: This non-equivalent control group, non-synchronized post-test only design study included 42 participants (22 in the experimental group and 20 in the control group). The Spinning Babies program was conducted four times in the experimental group during the first and second stages of delivery for 50 min per session. The program comprised performing pelvic circles on a birth ball, followed by wide squatting and adopting of open knee-chest and side-lying positions. Results: Compared with those in the control group, pregnant women in the experimental group had a significantly shorter labor time (t = - 6.64, p < .001), a higher success rate for normal vaginal delivery (χ2 = 4.86, p = .043), improved Apgar scores of newborns (z2 = - 2.18, p = .029), differences in neonatal oxygen therapy use (χ2 = 4.86, p = .043), and improved birth satisfaction (t = 11.99, p < .001). Conclusion The Spinning Babies program improves the birth environment by increasing the normal vaginal delivery success rate, as well as pregnant women’s birth satisfaction, and promotes neonatal health.

BACKGROUND: Current polymer-based drug-eluting stents (DESs) have fundamental issues about inflammation and delayed re-endothelializaton of the vessel wall. Substance-P (SP), which plays an important role in inflammation and endothelial cells, has not yet been applied to coronary stents. Therefore, this study compares poly lactic-co-glycolic acid (PLGA)-based everolimus-eluting stents (PLGA-EESs) versus 2-methacryloyloxyethyl phosphorylcholine (MPC)-based SP-eluting stents (MPC-SPs) in in-vitro and in-vivo models. METHODS: The morphology of the stent surface and peptide/drug release kinetics from stents were evaluated. The invitro proliferative effect of SP released from MPC-SP is evaluated using human umbilical vein endothelial cell. Finally, the safety and efficacy of the stent are evaluated after inserting it into a pig’s coronary artery. RESULTS: Similar to PLGA-EES, MPC-SP had a uniform surface morphology with very thin coating layer thickness (2.074 lm). MPC-SP showed sustained drug release of SP for over 2 weeks. Endothelial cell proliferation was significantly increased in groups treated with SP (n = 3) compared with the control (n = 3) and those with everolimus (n = 3) (SP:118.9 ± 7.61% vs. everolimus: 64.3 ± 12.37% vs. the control: 100 ± 6.64%, p < 0.05). In the animal study, the percent stenosis was higher in MPC-SP group (n = 7) compared to PLGA-EES group (n = 7) (MPC-SP: 28.6 ± 10.7% vs. PLGAEES: 16.7 ± 6.3%, p < 0.05). MPC-SP group showed, however, lower inflammation (MPC-SP: 0.3 ± 0.26 vs. PLGAEES: 1.2 ± 0.48, p < 0.05) and fibrin deposition (MPC-SP: 1.0 ± 0.73 vs. PLGA-EES: 1.5 ± 0.59, p < 0.05) around the stent strut. MPC-SP showed more increased expression of cluster of differentiation 31, suggesting enhanced reendothelialization. CONCLUSION Compared to PLGA-EES, MPC-SP demonstrated more decreased inflammation of the vascular wall and enhanced re-endothelialization and stent coverage. Hence, MPC-SP has the potential therapeutic benefits for the treatment of coronary artery disease by solving limitations of currently available DESs.

BACKGROUND: A drug-eluting stent (DES) is a highly beneficial medical device used to widen or unblock narrowed blood vessels. However, the drugs released by the implantation of DES may hinder the re-endothelialization process, increasing the risk of late thrombosis. We have developed a tacrolimus-eluting stent (TES) that as acts as a potent antiproliferative and immunosuppressive agent, enhancing endothelial regeneration. In addition, we assessed the safety and efficacy of TES through both in vitro and in vivo tests. METHODS: Tacrolimus and Poly(lactic-co-glycolic acid) (PLGA) were applied to the metal stent using electrospinning equipment. The surface morphology of the stent was examined before and after coating using a scanning electron microscope (SEM) and energy dispersive X-rays (EDX). The drug release test was conducted through high-performance liquid chromatography (HPLC). Cell proliferation and migration assays were performed using smooth muscle cells (SMC).The stent was then inserted into the porcine coronary artery and monitored for a duration of 4 weeks. RESULTS: SEM analysis confirmed that the coating surface was uniform. Furthermore, EDX analysis showed that the surface was coated with both polymer and drug components. The HPCL analysis of TCL at a wavelength of 215 nm revealed that the drug was continuously released over a period of 4 weeks. Smooth muscle cell migration was significantly decreased in the tacrolimus group (54.1% ± 11.90%) compared to the non-treated group (90.1% ± 4.86%). In animal experiments, the stenosis rate was significantly reduced in the TES group (29.6% ± 7.93%) compared to the bare metal stent group (41.3% ± 10.18%). Additionally, the fibrin score was found to be lower in the TES group compared to the group treated with a sirolimus-eluting stent (SES). CONCLUSION Similar to SES, TES reduces neointimal proliferation in a porcine coronary artery model, specifically decreasing the fibrins score. Therefore, tacrolimus could be considered a promising drug for reducing restenosis and thrombosis.