Objective To evaluate the association between the Thr241Met polymorphism in the XRCC3 gene and the risk of lung cancer in Chinese population by meta-analysis. Methods Databases including PubMed, EMbase, CNKI, VIP and WanFang Data were searched to identify domestic and foreign case-control studies concerning the association between Thr241Met polymorphism in XRCC3 gene and the risk of lung cancer in Chinese population from the inception to August 20th, 2013. Two reviewers independently screened the literature according to the inclusion and exclusion criteria, extracted data and assessed quality. Then meta-analysis was performed using RevMan 5.0 software and Stata 10.0 software. Results A total of 5 case-control studies involved 2 999 lung cancer cases and 2 994 controls were included. The results of meta-analysis showed that, Chinese population who carry the variant genotype or allele had no increased risk of lung cancer: Met/Met vs. Thr/Thr: OR=1.00, 95%CI (0.38, 2.59), P=0.99; Met/Met vs. Thr/Met: OR=1.06, 95%CI (0.83, 1.36), P=0.63; Met/Met vs. Thr/Met+Thr/Thr: OR=0.99, 95%CI (0.38, 2.57), P=0.98; Thr/Met+Met/Met vs. Thr/Thr: OR=1.06, 95%CI (0.82, 1.37), P=0.65; Met vs. Thr: OR=1.05, 95%CI (0.82, 1.35), P=0.68. Conclusion Currently, Thr241Met polymorphism in the XRCC3 gene is not found to be associated with the risk of lung cancer in Chinese population. Considering the limited quality of the included case-control studies, more high quality studies with large sample size are needed to verify the above conclusion.
Objective To investigate the effects of botulinum toxin type A (BTXA) on the excessive expansion speed and blood supply of myocutaneous flap. Methods Seven adult Guizhou minipigs of clean grade were included, female or male and weighing 16-20 kg. The 2.4 mL BTXA solution (96 U) was injected in cutaneous muscle (24 points) of one side as experimental group (n=7), the 2.4 mL saline in the other side as control group (n=7). Two expanders (200mL) were implanted beneath the cutaneous muscle on the bilateral flank of each pig symmertrically at 3 days after injection. One week later, the expanders were filled with saline every 4 days with an intracapsular pressure of 11.97 kPa, and accumulative total amounted to 400 mL for 3 weeks in control group and 5 weeks in experimental group. Then the expanders were taken out; the myocutaneous flaps formed and were sutured in situ. The myocutaneous flaps were cut for histological examination and capillary count. The expansion speed of the myocutaneous flap were recorded. The blood supply of the myocutaneous flap were observed by infrared thermography at 1 week after implantation expanders, before removing the expanders, and at 5 days after myocutaneous flap suture in situ. Results All the animals survived to the end of the experiment. The total expansion time was (54.0 ± 3.1) days in experimental group and (67.0 ± 3.9) days in control group, showing significant difference (t= —8.107, P=0.000). All myocutaneous flaps survived after being sutured in situ. Infrared thermograhy revealed that the temperature of the distal myocutaneous flap in experimental group was significantly higher than that in control group at 1 week after implantation of expanders (P lt; 0.05); at 5 days after myocutaneous flap suture in situ, the temperature of the central flap in experimental group was significantly higher than that in control group (P lt; 0.05); and there was no significant difference between 2 groups at the other time points (P gt; 0.05). The histological observation showed that the blood vessel density of the dermal layer and tissue between the capsule and the muscle layer in experimental group was significantly higher than those in control group (P lt; 0.05). Conclusion When excessive expansion is performed, BTXA can accelerate the expansion rate and improve the blood supply of expanded myocutaneous flaps.
ObjectiveTo compare the short-term outcomes between Ivor Lewis esophagectomy and McKeown esophagectomy under thoracoscopy and laparoscopy for thoracic middle-lower esophageal carcinoma and to investigate the optimal approach.MethodsThe relevant literatures (from database foundation to March 2016) comparing minimally invasive Ivor Lewis esophagectomy and minimally invasive McKeown esophagectomy were searched through PubMed, EMbase, The Cochrane Library, CBM, CNKI, Wanfang Data and VIP. RevMan 5.3 software was used for data analysis.ResultsA total of 870 patients in 5 studies were reviewed and data were pooled for analysis. The score of Newcastle Ottawa for the literatures was 7-8 points. The results showed that compared with the McKeown group, Ivor Lewis group had shorter operation time (WMD=–34.67, 95% CI –53.70 to –15.65, P=0.000 4), less recurrent laryngeal nerve injuries (OR=0.23, 95% CI 0.12 to 0.44, P<0.000 01), anastomotic leakage (OR=0.24, 95% CI 0.14 to 0.41, P<0.000 01), anastomotic stenosis (OR=0.30, 95% CI 0.16 to 0.55, P=0.000 01), and pulmonary complications ( OR=0.25, 95% CI 0.15 to 0.43, P<0.000 01). There was no significant difference between the two groups in intraoperative blood loss, postoperative stay, hospitalization cost and chylothorax incidence. The McKeown group was associated with much more lymph nodes dissection (WMD=–1.16, 95% CI –2.00 to –0.31,P=0.007) than the Ivor Lewis group.ConclusionCompared with McKeown esophagectomy combined with thoracoscopy and laparoscopy, Ivor Lewis esophagectomy combined with thoracoscopy and laparoscopy has some advantages for thoracic middle-lower esophageal carcinoma, but a greater number of lymph nodes are dissected in McKeown procedure.
Objective To summarize clinical outcomes of subxiphoid uniportal video-assisted thoracoscopic surgery for bilateral chest diseases simultaneously. Methods The clinical data of 60 patients with bilateral chest diseases treated by uniportal thoracoscopic surgery via subxiphoid approach in the Department of Thoracic Surgery, Affiliated Hospital of Zunyi Medical College from August 2016 to December 2017 were retrospectively analyzed. There were 35 males and 25 females, aged 25.5±8.8 years ranging from 13 to 51 years. There were 40 patients wtih palmar hyperhidrosis, and 20 patients with bilateral pulmonary bullae and onset of one-side pneumothorax. All patients adopted subxiphoid uniportal video-assisted thoracoscopic surgery. Among them 36 patients with palmar hyperhidrosis underwent resection of R3 bilateral sympathetic nerves, 1 resection of R4 bilateral sympathetic nerves, 3 resection of R3+R4 bilateral sympathetic nerves, and 20 patients with pulmonary bullae underwent bilateral bullectomy and pleurodesis. Results Fifty-five patients cured within 1 to 4 days and discharged after surgery. One patient with incision infection and pulmonary infection after bullectomy, cured and discharged after 3 weeks anti-inflammation and incision dressing change. Four patients with Grade B healing recovered after 1 to 2 weeks dressing change. During the follow-up, no pneumothorax or hand perspiration relapsed. Conclusion Subxiphoid uniportal video-assisted thoracoscopic surgery for simple bilateral chest disease simultaneously is safe and feasible, which not only avoids simultaneous trauma of bilateral punch, but also alleviates the pain of patients.