OBJECTIVE: To modify the surface of poly(D,L-lactide) film by anhydrous ammonia gaseous plasma treatment. METHODS: The changes of contact angles were measured and surface energy were calculated. Mouse 3T3 fibroblast cells were cultured on plasma modified and control poly(D,L-lactide) films. RESULTS: It was found that the hydrophilicity and surface energy of the materials have been increased after plasma treatment. Cell culture results showed that ammonia plasma treatment could promote the cell attachment and cells growth. After 4 days culture, the cells on the plasma treated films were 2-folds quantitatively compared with that of the control films. CONCLUSION: Ammonia plasma treatment can improve the cell affinity to poly(D,L-lactide).
Objective To study relationship between integrins and carcinogenesis, development, treatment or prognosis of gastric cancer. Methods The literatures about integrins and gastric cancer in recent years were reviewed and analyzed. Results The current study found that the β1 subunit integrins and αν subline integrins are closely associated with the gastric cancer. The β1 subunit integrins are associated with the invasion and metastasis of the gastric cancer, the αν subline integrins are associated with the typing, grading, and staging of the gastric cancer, and the ανβ3, ανβ5 and ανβ6 are associated with the prognosis of the gastric cancer, further more, the ανβ6 could be used as an independent effective prognostic factor. Conclusions Integrins are associated with occurrence, development, treatment, and prognosis of gastric cancer. It′s mechanism such as signal transduction pathway is not completely clarified. With further in-depth research, it′s molecular mechanism would be gradually elucidated and provide new ideas and methods for diagnosis, treatment, and prognosis of gastric cancer.
目的 探討胰性腦病的可能的發病機制、發病情況及防治措施.方法 計算機檢索中文科技期刊全文數據庫(1989～2004),收集有關胰性腦病的臨床研究,并進行統計分析.結果 共納入43篇文獻,435例患者.胰性腦病在重癥急性胰腺炎中的發病率遠高于輕癥急性胰腺炎;發病年齡趨向中、老年;病死率為43.67%;病因仍以膽系疾病為主;伴發低氧的幾率不高于未并發胰性腦病患者.結論 胰性腦病的發生可能是多因素共同作用的結果,仍需進一步探討其發病機制.血清髓鞘堿性蛋白有望成為有價值的診斷指標.防治以治療原發病急性胰腺炎為主,重在預防.胰酶抑制劑和早期營養支持有一定預防作用.
Objective To identify an evidence-based treatment for a patient with aneurysmal subarachnoid hemorrhage (aSAH). Methods We first put forward clinical problems about how to prevent complications and how to treat ruptured aneurysm of aSAH, then searched The Cochrane Library (Issue 4, 2006), Ovid ACP Journal Club (1991 to 2006), Ovid MEDLINE (1966 to 2006), NGC (1998 to 2006) and CBM (1978 to 2006) to identify systematic reviews, randomized controlled trials, controlled clinical trials and treatment guidelines. Results Eleven studies and five guidelines were included. Current evidence indicated that nimodipine was effective for prophylaxis of poor outcome after vasospasm, while tirilazad was not effective in female patients with good grades. The effectiveness of other treatments to prevent complications was not clear. Evidence on the use of antifibrinolytics for the prevention of re-bleeding was inconsistent. If a ruptured aneurysm was considered suitable for both surgical clipping and endovascular coiling, coiling was associated with a better outcome. According to the available evidence and guidelines, considering the patient’s conditions and preferences, nimodipine and antifibrinolytics were administered to prevent complications and her aneurysm was treated by early endovascular embolization. She did not experience vasospasm or re-bleeding during her hospital stay. Short-term follow-up showed a good outcome. Long-term prognostic benefits after endovascular therapy need to be confirmed by prolonged follow-up. Conclusions Therapies based on the best clinical evidence and guidelines should be given to prevent complications and improve outcome for patients after an aSAH.
Primary acinic cell carcinoma (ACC) of the lung is extremely rare. The World Health Organization tumor classification defines ACC as "a malignant epithelial neoplasm that demonstrates some cytological differentiation towards (serous) acinar cells". It is considered to be a low-grade malignant tumor. Since the first case described by Fechner in 1972, less than 30 cases have been reported in the literature. The rarity of this tumor may leads it to be confused with other primary lung tumors and incorrectly diagnosed. We reported a female patient with primary ACC of the lung with mediastinum deviation at age of 27 years received a right pneumonectomy. She was followed up for 12 months postoperatively and remains well.
ObjectiveTo investigate the feasibility, safety and effectiveness of radiofrequency ablation of atrial fibrillation with mitral valve replacement under totally thoracoscopic surgery.MethodsThe clinical data of 107 patients with rheumatic mitral disease and atrial fibrillation who underwent mitral valve replacement and radiofrequency ablation at the same time in our hospital from January 2014 to October 2018 were retrospectively analyzed. The patients were divided into two groups: a totally thoracoscopic surgery group (n=51, including 20 males and 31 females, aged 50.57±5.24 years) and a median sternotomy group (n=56, including 21 males and 35 females, aged 52.12±5.59 years) according to the surgical methods. The preoperative, intraoperative and postoperative data of the patients were compared.ResultsAll operations were successfully completed without death. In terms of bleeding volume, drainage volume, ventilator-assisted breathing time, hospital stay and incision length, the totally thoracoscopic surgery group was better than the median sternotomy group, and the difference was statistically significant (P<0.05). The cardiopulmonary bypass time and radiofrequency ablation time in the totally thoracoscopic surgery group were longer than those in the median sternotomy group (P<0.05). There was no significant difference in the operation time, aortic occlusion time, postoperative complications, left ventricular ejection fraction, left atrial diameter and sinus rhythm maintenance between the two groups (P>0.05). There was no atrioventricular block, pulmonary vein stenosis, atrioesophageal fistula, coronary artery injury, stroke or hemorrhage during the follow-up.ConclusionRadiofrequency ablation of atrial fibrillation with mitral valve replacement under totally thoracoscopic surgery is safe and effective, and it is worthy of clinical application.
Objective To understand pathogenesis, clinical manifestations, diagnosis, treatment, and prognosis of metaplastic breast cancer (MBC), and to provide some new ideas for clinical diagnosis and treatment, and exploration of scientific research for it. Method The relevant literatures of the latest research on MBC were reviewed and analyzed. Results At present, the pathogenesis of the MBC was still uncertain. The incidence of the MBC was lower, and it’s clinical manifestations were not specific. Compared with the invasive breast cancer, the tumor diameter was larger, the growth was faster, the differentiation degree was lower, the risks of the local and distant metastases were higher, while the lymph node metastasis was rare. Because of the clinical manifestation, auxiliary examination, and imaging examinations were lack of specificity, the diagnosis was difficult. Although the preoperative puncture could provide a reliable diagnosis evidence, it was difficult for distinguishing and accurate diagnosis due to it’s more subtypings. Some of the specific molecular targets could provide a help for it. At present, the modified radical mastectomy was often performed, the axillary lymph node metastasis was relatively rare in the MBC, so the sentinel lymph node biopsy was more important in the treatment of the MBC. The therapeutic effect was limited by the endocrine therapy, targeted therapy, or neoadjuvant chemotherapy and was poor by the systemic chemotherapy. Although the radiotherapy and chemotherapy could improve the overall survival and prolong the disease-free survival and control the local recurrence, the difference of it’s therapeutic effect was great due to the complex MBC typing. Conclusions MBC is a highly malignant and strongly invasive tumor, and it has more subtypings. Clinical manifestation and preoperative examination are lack of specificity, hence it is easy for misdiagnosis or missed diagnosis. Unified treatment guideline is lack of, prognosis is poor. So, it needs to explore some new treatment methods and formulate standardized treatment guidelines in order to achieve a better therapeutic effect.
Objective To present the pooled quantitative evidence of clinical features and current treatments of programmed death 1 (PD-1) / programmed death-ligand 1 (PD-L1) inhibitor-associated vasculitis. Methods Medline, Embase, EBM, CNKI, WanFang Data and VIP databases were searched for all available studies reporting PD-1/PD-L1 inhibitor-associated vasculitis till March 23, 2022. We summarized and systematically reviewed the included articles, and analyzed the data results with descriptive statistical methods. Results A total of 38 articles were included, including 43 patients. The median age [median (minimum, maximum)] was 62 (31, 89) years, and most of patients were male (64.3%). Lung cancer was the most common tumor (47.6%). The median onset time of vasculitis [median (minimum, maximum)] was 12 (1, 120) weeks after medication. Small vasculitis (62.8%) and cutaneous vasculitis (26.7%) were the most common types. The Common Terminology Criteria for Adverse Events of vasculitis was predominantly 3-4 (83.7%). After diagnosed with vasculitis, PD-1/PD-L1 inhibitors were discontinued in 81.6% of patients, and glucocorticoid was administrated in 88.4% of patients. After treatment, 90.0% of patients had significant improvement during follow-up. However, when the discontinuation of PD-1/PD-L1 inhibitors, 55.6% of patients tumor progressions, and 35.0% of patients dead. Conclusions Special attention should be paid to the occurrence of vasculitis when using PD-1/PD-L1 inhibitors for malignant tumor therapies. Stopping PD-1/PD-L1 inhibitors and using glucocorticoid are the essential methods to treat vasculitis, but the above treatments may bring a high risk of tumor progression.
ObjectiveTo summarize the experience in the treatment of anastomotic leakage after laparoscopic D2 radical gastrectomy.MethodThe clinicopathologic data of 11 patients with anastomotic leakage after the laparoscopic D2 radical gastrectomy in the Nanchong Central Hospital from May 2016 to January 2018 were analyzed retrospectively.ResultsAmong the 11 patients with anastomotic leakage, 3 were grade Ⅱ leakages and 8 were grade Ⅲa leakages. There were no symptoms in the 3 cases of anastomotic leakage, which were confirmed only by the gastrointestinal radiography and were healed after 7 d of conservative treatment. Among the 8 patients with the clinical symptoms, 5 cases were treated by the endoscopic drainage and negative pressure suction for 60–90 d, 3 cases were treated by the endoscopic covered stent, 2 cases were cured after 30–60 d, and 1 case died of massive bleeding after 45 d.ConclusionsDue to differences of location, time, limitation, and size of anastomotic leakage after laparoscopic D2 radical gastrectomy, individualized treatment should be performed according to specific situation of patients in local treatment. Endoluminal covered stent has certain clinical application value.
Objective To discuss diagnosis and treatment strategy of vanishing bile duct syndrome. Method The clinical data of 1 child patient with suspected biliary atresia who received the liver transplantation in the West China Hospital of Sichuan University was retrospectively analyzed. Results The child patient underwent the liver transplantation due to the liver failure, and the postoperative pathological results indicated the vanishing bile duct syndrome accompanied by the formation of secondary (incomplete segmentation) cholestatic liver cirrhosis, the postoperative recovery was good. After 11 months of follow-up, the liver function, coagulation function, and blood flow of the transplanted liver were not obviously abnormal. The height and weight were suitable for the same age. Conclusion At present, there are many etiologies and complicated pathogenesis of vanishing bile duct syndrome, and liver transplantation is an ultimate effective treatment.