Objective To detect expression of CK20 mRNA in peripheral blood of patients with colorectal carcinoma and its clinical significance. Methods Using the reverse transcriptase-polymerase chain reaction (RT-PCR),CK20 mRNA expression was examined in peripheral blood from 42 patients with colorectal carcinoma before and after operation, 20 healthy volunteers, 20 fresh colorectal carcinoma samples. Results The positive expression rates of CK20 mRNA were 45.24%(19/42) and 33.33%(14/42) before and after operation in 42 colorectal carcinoma patients respectively. All 20 fresh colorectal carcinoma samples revealed expression of CK20 mRNA, but the 20 normal blood samples did not. Conclusion The detection of CK20 mRNA in peripheral blood is helpful to early diagnose, assess the prognosis and make a correct treatment of colorectal carcinoma.
The way of intravenous drug abuse is to puncture the peripheral blood vessels and inject the drug directly into the blood. Therefore, this method has an impact on the peripheral artery and venous system of the users, and can cause a variety of peripheral vascular diseases, such as phlebitis, deep vein thrombosis, chronic venous insufficiency, phlebangioma, atherosclerosis, acute arterial ischemia, pseudoaneurysm, etc. However, due to the particularity of drug abusers, the vascular complications caused by intravenous drug abuse have not attracted enough attention. This paper reviewed the types and pathogenesis of peripheral vascular diseases caused by intravenous drug abuse, so as to improve the clinical understanding of peripheral vascular diseases caused by intravenous drug abuse, improve the prognosis of patients, reduce occupational exposure of medical staff, and play a certain role in social warning.
Lower extremity arteriosclerosis obliterans, also known as peripheral artery disease (PAD), is a chronic arterial occlusive disease characterized by atherosclerosis affecting the arteries of the lower extremities, leading to luminal stenosis or occlusion, and consequently resulting in ischemia and necrosis of the lower limbs. PAD not only significantly reduces patients’ quality of life but also carries a non-negligible risk of amputation and mortality, imposing a heavy economic and health burden on both patients and society, especially among the elderly. Advanced age has been identified in multiple studies as a key risk factor for amputation and death in PAD patients. The prevalence of PAD in the elderly increases significantly with age, as they often have multiple coexisting conditions such as coronary artery disease, renal insufficiency, and tumors. Consequently, the pathophysiological characteristics, treatment options, and prognostic assessments are more complex compared to those of younger patients. Diagnostically, because comorbidities can often mask the symptoms of PAD in elderly patients, a comprehensive approach involving detailed medical history, physical examination, and auxiliary tests is required. In terms of treatment, the management of elderly patients with PAD is further complicated by issues such as poor adherence to therapy and difficulties in follow-up, which increase the challenges in clinical management. Currently, there is a lack of specific national or international guidelines or consensuses focused on the diagnosis and treatment of PAD in the elderly. To address this gap, the “Chinese expert consensus on management of peripheral arterial disease in the elderly” has been developed. This consensus integrates the latest evidence-based medical data and clinical experience, with a focus on key issues in elderly PAD patients, such as disease characteristics, comorbidity management, personalized treatment, and long-term follow-up. It aims to establish scientific and practical diagnostic and therapeutic standards to provide guidance for clinicians.
Objective To determine the application values of gene chip technique in cardiovascular surgical clinical and research work. Microarray for gene expression profiles was used to screen out the differentially expressed genes during cardiopulmonary bypass(CPB) in peripheral blood mononuclear cell. By doing these, it was hoped that some clues in inflammatory response during CPB could be found out. Methods The patients’ oxygenated bloods were drawn immediately before onset and termination of CPB. Peripheral blood mononuclear cell (PBMC) were obtained from heparinised blood by Ficoll gradient centrifugation. The differentially expression was measured using BD AtlasTM cDNA Expression Arrays. The candidate genes were corroborated by semiquantitative reverse transcriptionpolymerase chain reaction (RT-PCR). Results Gene chip technique was successfully used in CPB study. The gene expression profiles of cytokines of PBMC during CPB were screened out. Interleukin 6 and Wnt5a were the differentially expressed genes. But the validity using semiquantitative RT-PCR found no statistically difference(P=0.888,0.135). Conclusion Microarray technique has positive application values in the study of cytokines during CPB. cDNA microarray for gene expression profiles can primarily screen out differentially expression genes during CPB. These genes may be engaged in inflammation and other pathophysiological reactions during CPB. PBMC is not the major source of cytokines during CPB.