肺癌是全球范围内肿瘤致死的最常见原因，其死亡率超过了结肠癌、乳腺癌和前列腺癌之和[1]。虽然肺癌已成为全球最主要的死因之一，然而在其治疗方面仍然缺乏根本有效的方法。肿瘤的化学预防（chemoprevention）是一项有效的措施[2]，其含义是：应用天然或人工合成化合物阻断、逆转或预防侵袭性肿瘤的发生，降低具有侵袭性或有临床表现的癌症的发生率。肿瘤化学预防药物研究已成为目前肿瘤学和药学的研究热点之一。
【Abstract】 Objective To investigate the effectiveness of pedicled sternocleidomastoid muscle flap in repairing defect after parotidectomy by comparing with direct suture. Methods The clinical data were retrospectively analyzed, which were from 73 patients with parotid tumor undergoing parotidectomy between January 2002 and April 2010. After parotidectomy, defects were repaired with pedicled sternocleidomastoid muscle flap in 38 cases (flap group) and with direct suture in 35 cases (control group). There was no significant difference in gender, age, disease duration, tumor location and size between 2 groups (P gt; 0.05). Meanwhile the complications, such as local introcession deformity, Frey’s syndrome and parotid gland fistula were observed. Results In flap group, the flaps were all alive and incisions healed by first intention; in control group, all incisions healed by first intention. All patients were followed up 6-98 months and no tumor recurred. There was significant difference in local introcession deformity between 2 groups (χ2=53.202, P=0.000). The parotid gland fistula was found in 1 case (2.6%) of the flap group and in 8 cases (22.8%) of the control group, Frey’s syndrome was found 1 case (2.6%) of the flap group and in 20 cases (57.1%) of the control group, showing significant differences between 2 groups (P lt; 0.05). Conclusion The use of pedicled sternocleidomastoid muscle flap for defect repair after parotidectomy can avoid the complications of local introcession deformity, Frey’s syndrome, and parotid gland fistula.
Objective To observe the genotype distribution of Haemophilus parainfluenzae from patients with acute exacerbations of chronic obstructive pulmonary disease ( AECOPD) and their effects on A549 cells. Methods 80 hospitalized patients with AECOPD in our hospital were enrolled. Haemophilus parainfluezae were collected by sputum culture and genotyped, then inoculated with cell line A549. IL-6 and IL-8 concentrations in the supernatant were detected and cell morphology was observed at different time points. Results The patients were divided into three groups according to their symptoms. 15 Haemophilus parainfuenzae strains were collected and the positive culture rate between type 1 and type 3 COPD patients were statistically different. The concentrations of IL-6 and IL-8 were both significantly higher than control and increased as time passed. 4 genotypes were got by random amplification of polymorphic DNA ( RAPD) . In RAPD Ⅲ group, the IL-8 concentration was higher at 12h and 24h than others. No morphologic change was found in the cells inoculated with Haemophilus parainfuenzae by microscope after fixing. Conclusions Positive culture rate of Haemophilus parainfuenzae was different in different COPD groups according to symptoms. Haemophilus parainfuenzae can stimulate a cytokine response in A549 cells, maybe one of the pathogens of AECOPD, especially the RAPDⅢ type. Haemophilus parainfuenzae is not an intracellular bacteria.
ObjectiveTo explore the clinical efficacy and application significance of continuous irrigation and drainage for intestinal fistula combined with abdominal infection.MethodsClinical data of 62 patients with intestinafistula combined with abdominal infection admitted by Department of General Surgery of The 940th Hospital of The People’s Liberation Army Joint Service Support Force from March 2012 to March 2017 were retrospectively analyzed. All patients were treated with continuous abdominal flushing and drainage after emergency surgery. The duration of peritoneal flushing, antibiotic use, blood picture recovery, fistula healing, and total hospitalization were summarized.ResultsAll 62 patients were treated successfully without death or septic shock. Among them, 49 cases of intestinal fistula were treated with continuous abdominal flushing and drainage, and 13 cases of intestinal fistula were treated by continuous flushing and drainage of the abdominal cavity. There were 6 cases of abdominal abscess, 5 cases of incision infection, 5 cases of pleural effusion, and 2 cases of pulmonary infection after surgery. The continuous abdominal cavity washing time was (45±21) d, antibiotic use time was (14±7) d, blood image recovery time was (16±8) d, the healing time of fistula was (47±24) d, total length of hospital stay was (56±27) d.ConclusionsFor intestinal fistula combined with abdominal cavity infection, peritoneal continuous flushing and drainage is related with curative effect, high cure rate, fewer complications, simple washing equipment, simple technology, lower cost, and convenient nursing, which can create a good condition for the complexity or refractory patients with intestinal fistula, and has a high clinical application significance.
ObjectiveTo explore the application value of damage control in intra-abdominal sepsis. MethodsThe related literatures were searched by searching literatures with " damage control” " damage control resuscitation” damage control surgery”, and " intra-abdominal sepsis”, to made an review. Results Despite significant advances in management and treatment, mortality from intra-abdominal sepsis remained still high. Due to its unique anatomic and microbial environment, initial operation could not completely remove the source of infection and avoid complications. Therefore, it was becoming increasingly popular to utilize a damage control strategy with abbreviated laparotomy and planned reoperations. ConclusionsDamage control is characterized by staged treatment, and is widely accepted used to manage intra-abdominal sepsis.
ObjectiveTo explore the application value of the combined detection of CA19-9, CA72-4, carcinoembryonic antigen (CEA), serum pepsinogen Ⅰ(PGⅠ), serum pepsinogen Ⅱ(PGⅡ), ratio of PGⅠ and PGⅡ (PGR), and gastrin-17 (G17) in the diagnosis of gastric cancer.MethodsOne hundred cases of gastric cancer admitted to the Joint Logistic Support Force 940 Hospital of the People’s Liberation Army from January 2016 to August 2018 were respectively collected as the observation group, 110 cases of benign gastric lesions as the control group during the same period, the levels of serum CA19-9, CA72-4, CEA, PGⅠ, PGⅡ, PGR, and G17 were tested among patients in the two groups, the diagnostic value of single and combined detection (included CA19-9, CA72-4, CEA, PGⅠ, PGⅡ, PGR, and G17) were explored.ResultsThe levels of CA19-9, CA72-4, CEA, and G17 in the observation group were higher than those of the control group (P<0.05), the levels of PGⅠ and PGR were lower than those of the control group (P<0.05). The positive detection rates of CA19-9, CA72-4, CEA, G17, PGⅠ, PGR, and combined detection in the observation group were all higher than those of the control group (P<0.05). The sensitivity and accuracy of the combined detection in the diagnosis of gastric cancer were higher than that of single serum index (P<0.05). The levels of serum CA19-9, CA72-4, CEA, and G17 in the patients of Ⅲ+Ⅳ period, low and moderate degree of differentiation, the tumor diameter was larger than five centimeters, signet-ring cell carcinoma, and distance metastasis of gastric cancer patients were on the high side compared with Ⅰ+Ⅱ period, high differentiation, the tumor diameter was less than or equal to five centimeters, glandular cancer, and no distance metastasis of gastric cancer patients, as well as the levels of serum PGⅠ and PGR on the low side (P<0.05).ConclusionThe combined detection of CA19-9, CA72-4, CEA, PGⅠ, PGⅡ, PGR, and G17 can effectively improve the diagnose rate of gastric cancer, and they are closely related to the pathological characteristics of gastriccancer patients.
ObjectiveTo summarize the research progress of patient-derived organoid (PDO) and patient-derived xenograft (PDX) models in preclinical drug screening for gastric cancer, aiming to provide a new perspective for precise drug screening and promote the application of personalized medicine and precision medicine for gastric cancer. MethodA literature review was conducted on the use of PDO and PDX models in the basic research and preclinical drug screening for gastric cancer. ResultsThe PDO and PDX models of gastric cancer exhibited a higher tumor biological simulation capability and a relatively accurate preclinical drug response prediction. However, they each have some certain limitations. The advent of organoid models based on xenografting, which combines the advantages of both, is expected to compensate for their respective shortcomings. These models can better reflect the heterogeneity of patients’ tumors and have unique advantages in the evaluation of new targeted drugs for specific molecular targets in gastric cancer, such as epidermal growth factor receptor. They show a certain correlation with the actual clinical response of patients, paving a new way for the development of new drugs, the study of drug action and resistance mechanisms, and personalized therapy. ConclusionsPDO and PDX models, as a highly promising research platform, show a great potential in the screening of anti-tumor drugs and the development of personalized medical strategies.
ObjectiveTo detect level of circulating tumor cells (CTCs) in peripheral venous blood of fasting patients with gastric cancer (GC) and to analyze relationships between CTCs and clinicopathologic features and prognosis of patients with GC.MethodsOne hundred patients with GC were selected (GC group), who underwent the surgery and confirmed by the histopathology in the 940 Hospital of Joint Service of PLA, from August 2015 to December 2016. Thirty-eight patients with gastric benign lesions who were treated in this hospital at the same time were selected as the control group. The 7 mL peripheral venous blood of the elbow in the morning was taken from the fasting patients and the CTCs were detected by the immunomagnetic microparticle negative enrichment combined with immunofluorescence in situ hybridization within 24 h. The positive rate of CTCs was calculated and its relationships with the clinicopathologic features (tumor location, tumor invasion depth, degree of differentiation, TNM stage, lymph node metastasis, and vascular tumor thrombus) and the progression-free survival of the patients with GC were analyzed.ResultsThe positive rate of peripheral venous blood CTCs in the GC group was 89.0% (89/100), which was higher than that in the control group (10.5%, 4/38), and the difference was statistically significant (P<0.001). The levels of CTCs in the patients with GC were significantly correlated with the tumor invasion depth (P=0.017), lymph node metastasis (P=0.038), and TNM stage (P=0.016), which were not associated with the age, gender, tumor location, degree of differentiation, and vascular tumor thrombus (P>0.050). The predictive value of CTCs for the diagnosis of GC was significantly superior to that of the tumor markers CEA, CA19-9, or CA125. The progression-free survival of patients with low CTCs expression was significantly longer than that in the patients with high CTCs expression (χ2=5.172, P=0.023).ConclusionsDetecting CTCs of patients with GC by immunomagnetic particle negative enrichment combined with immunofluorescence in situ hybridization has a high sensitivity. And it can improve early diagnosis of patients with GC. Preoperative CTCs detection has a certain value in guiding staging of GC and predicting prognosis of patients with GC.