ObjectiveTo explore the clinical efficacy of volume displacement techniques for breast defects following breast conserving surgery. MethodsAfter inclusion and exclusion, the patients with breast defects following breast conserving surgery in the Minda Hospital of Hubei Minzu University from February 2013 to March 2020 were retrospectively enrolled, and were assigned into a volume displacement group and volume replacement group according to different surgical techniques. Then the outcomes were compared between the two groups, including short-term efficacy (incision length, operation time, intraoperative blood loss, volume of resected specimen, cosmetic effect, patients’ subjective satisfaction, total postoperative complications, and total hospitalization time) and long-term efficacy (local recurrence rate, 3-year tumor-free survival, and 3-year overall survival). ResultsA total of 208 eligible patients were included in this study, including 105 in the volume displacement group and 103 in the volume replacement group before propensity score matching (PSM); after PMS, a total of 62 patients were enrolled, including 33 in the volume displacement group and 29 in the volume replacement group. No statistical difference was reported in the baseline data between two groups (P>0.05), except that the maximum diameter of lesion in the volume displacement group was smaller than that in the volume replacement group (P<0.05). The incision length, operation time, total hospitalization time, total postoperative complication rate, local recurrence rate, 3-year tumor-free survival rate, and 3-year overall survival rate had no statistical differences between the two groups (P>0.05), whereas the intraoperative blood loss was less (t=3.294, P=0.002) and the volume of resected specimen was smaller (t=2.030, P=0.047) in the volume displacement group as compared with the volume replacement group, and the cosmetic effect and patients’ subjective satisfaction were better in the volume displacement group as compared with the volume replacement group (Z=2.297, P=0.022; Z=2.256, P=0.024). ConclusionThe study analysis with small size samples reveals that volume displacement technique for breast defects following breast conserving surgery can achieve a good cosmetic effect and high patients’ subjective satisfaction without increasing risk of postoperative complications and tumour recurrence, which demonstrates a good long-term efficacy profile.
Repeated transcranial magnetic stimulation (rTMS) is one of the commonly used brain stimulation techniques. In order to investigate the effects of rTMS on the excitability of different types of neurons, this study is conducted to investigate the effects of rTMS on the cognitive function of mice and the excitability of hippocampal glutaminergic neurons and gamma-aminobutyric neurons from the perspective of electrophysiology. In this study, mice were randomly divided into glutaminergic control group, glutaminergic magnetic stimulation group, gamma-aminobutyric acid energy control group, and gamma-aminobutyric acid magnetic stimulation group. The four groups of mice were injected with adeno-associated virus to label two types of neurons and were implanted optical fiber. The stimulation groups received 14 days of stimulation and the control groups received 14 days of pseudo-stimulation. The fluorescence intensity of calcium ions in mice was recorded by optical fiber system. Behavioral experiments were conducted to explore the changes of cognitive function in mice. The patch-clamp system was used to detect the changes of neuronal action potential characteristics. The results showed that rTMS significantly improved the cognitive function of mice, increased the amplitude of calcium fluorescence of glutamergic neurons and gamma-aminobutyric neurons in the hippocampus, and enhanced the action potential related indexes of glutamergic neurons and gamma-aminobutyric neurons. The results suggest that rTMS can improve the cognitive ability of mice by enhancing the excitability of hippocampal glutaminergic neurons and gamma-aminobutyric neurons.
ObjectiveTo evaluate the effectiveness and safety of proximal aortic repair (PAR) versus total arch replacement (TAR) for treatment of acute type A aortic dissection (ATAAD). Methods An electronic search was conducted for clinical controlled studies on PAR versus TAR for patients with ATAAD published in Medline via PubMed, EMbase, The Cochrane Library, Web of Science, Wanfang Database and CNKI since their inception up to April 30, 2022. The quality of each study included was assessed by 2 evaluators and the necessary data were extracted. STATA 16 software was used to perform statistical analysis of the available data. ResultsA total of 28 cohort studies involving 7 923 patients with ATAAD were included in this meta-analysis, of whom 5 710 patients received PAR and 2 213 patients underwent TAR, and 96.43% of the studies (27/28) were rated as high quality. The meta-analysis results showed that: (1) patients who underwent PAR had lower incidences of 30 d mortality [RR=0.62, 95%CI (0.50, 0.77), P＜0.001], in-hospital mortality [RR=0.64, 95%CI (0.54, 0.77), P＜0.001], and neurologic deficiency after surgery [RR=0.84, 95%CI (0.72, 0.98), P=0.032] than those who received TAR; (2) the cardiopulmonary bypass time [WMD=–52.07, 95%CI (–74.19, –29.94), P＜0.001], circulatory arrest time [WMD=–10.14, 95%CI (–15.02, –5.26), P＜0.001], and operation time [WMD=–101.68, 95%CI (–178.63, –24.73), P＜0.001] were significantly shorter in PAR than those in TAR; (3) there was no statistical difference in mortality after discharge, rate of over 5-year survival, renal failure after surgery and re-intervention, volume of red blood cells transfusion and fresh-frozen plasma transfusion, or hospital stay between two surgical procedures. Conclusion Compared with TAR, PAR has a shorter operation time and lower early and in-hospital mortality, but there is no difference in long-term outcomes or complications between the two procedures for patients with ATAAD.