In order to study the immune function of patients with obstructive jaundice, the rate of RBC-C3b receptor rosette (RCR), tumour-RBC rosettes (TRR), RBC-immune complex rosette (RICR) and CD３+,CD4+,CD8+ cells were investigated. In these patients, the pre-operative erythrocyte and T lymphocyte subsets immune functions were lower than those of the control (Ｐ＜0.001). At the 5th day after operation, there was no significant change and 14th day after operation the erythrocyte and T lymphocyte substes immune functions were significantly elevated(Ｐ＜0.05), while, compared with the normals, which was still depressed in some degree. Operation is useful to the recovery of the immune function in all patients.
Objective To investigate the effects of immune—enhancing enteral nutritioin therapy on the inflammatory reaction and immune function in the rats of ventilation-induced lung injury．Methods Fourty rats were divided into four groups(EN1、EN2、SEN1、SEN2，n=10)．All groups were performed mechanic ventilation and fed isocaloric enteral nutrition．EN1 group：tidal Volume(VT) =8 mL／kg，traditional enteral nutrition；EN2 group：VT=40 mL／kg，traditional enteral nutrition；SEN1 group：VT：8 mL／kg，immune-enhancing enteral immunonutrition；SEN2 group：VT=40 mL／kg，immune-enhancing enteral immunonutrition．Lymphocyte subsets，TNF-α，IL-6 and contents of arachidonic acid(AA)were determined at different time point(0，4，24，72 h after ventilation)．Results The levels of CD3+，CD4+，CD4+／CD8+ in SEN2 group were lower(Plt;0.05)than in EN1，EN2 and SEN1 group after 24，72 h of ventilation．The serum concentrations of TNF-α，IL-6 and AA were significantly lower in EN2 than in other three groups(P lt;0.05)．Conclusion Immune-enhancing enteral nutrition feeding prior to machanie ventilatioin can alleriate the damage of immunological function and reduce infl ammotory responses
Objective
To study the effect of perioperative nutritional support on protein metabolism and immunity in patients underwent liver transplantation.
Methods
A total of 80 patients who underwent liver transplantation in our hospital from March 2015 to March 2016 were collected retrospectively, and then the 80 patients were divided into control group (n=40) and observation group (n=40) according to the type of perioperative nutritional support. Patients of control group didn’t receive preoperatively nutritional support, and received total parenteral nutrition support before postoperative exhaust, then received enteral nutrition support after anal exhaust. Patients of observation group receive preoperatively nutritional support before surgery, and received parenteral nutrition and enteral nutrition support before postoperative exhaust. The several parameters about nutritional status and immune function were observed on 7 days and 14 days after liver transplantation, and comparison of the 2 group in these parameters was performed.
Results
On the protein metabolism, the levels of serum transferrin, prealbumin, and nitrogen balance on 14 days after liver transplantation were higher than those of other time points (before liver transplantation and 7 days after liver transplantation),P<0.05, both in control group and observation group. There was no significant difference in the levels of serum transferrin, prealbumin, and value of nitrogen balance between the 2 groups before liver transplantation (P>0.05). But on 7 days and 14 days after liver transplantation, the levels of serum transferrin, prealbumin, and value of nitrogen balance of the observation group were higher than those of control group (P<0.05). On the immunity, the total number of lymphocytes, value of IgG and CD4/CD8 on 14 days after liver transplantation, were superior to other time points (before liver transplantation and 7 days after liver transplantation),P<0.05, both in control group and observation group. There was no significant difference in the total number of lymphocytes, value of IgG and CD4/CD8 between the 2 groups before liver transplantation (P>0.05). But on 7 days and 14 days after liver transplantation, the levels of the total number of lymphocytes, value of IgG and CD4/CD8 in the observation group were superior to those of control group (P<0.05).
Conclusion
Perioperative nutritional support can improve the nutritional status and immune function in patients underwent liver transplantation.
To study the effects of arginine supplementation in total parenteral nutrition (TPN) on lymphocytic immune function in postoperative patients with gastric cancer. Thirty six patients with gastric cancer receiving TPN were eligible for entry into randomized and prospective clinical trial of the study. T cell subsets, NK cell activity, plasma IL-2 content and peripheral blood CD25 were measured in before and after parenteral nutrition of the patients. Results: usual TPN could not improve lymphocytic immunosuppression of postoperative patients with gastric cancer. The patients receiving arginine supplementation in TPN might enhance lymphocytic immune function by increasing CD4 level, IL-2 production and NK cell activity, but there was no significant effect of arginine on CD25 expression. Conclusion: there are some effects of supplement with arginine on releasing of the cellular immunosuppression and restoring of lymphocytic immune function.
ObjectiveTo summarize the results of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) IgG antibody, total antibody and cellular immune function of COVID-19 convalescent patients one year after discharge, and to analyze the correlation between the SARS-CoV-2 antibody and the indexes of immune function. MethodsA total of 41 confirmed COVID-19 patients discharged from Chengdu Public Health Clinical Medical Center from January to April 2020 and followed up one year after discharge were included in the study as the research group, including 18 males and 23 females with an average age of 47.83±12.95 years. The results of SARS-CoV-2 IgG, total antibody and immune function indexes one year after discharge were collected in order to discuss the correlation of SARS-CoV-2 and cellular immune function. A total of 40 healthy employees of the hospital vaccinated against COVID-19 were randomly selected as the vaccine group, including 10 males and 30 females with an average age of 43.90±6.86 years. The SARS-CoV-2 antibodies between the two groups were compared. ResultsCD8+T cell count was higher and CD4+T/CD8+T was lower in male patients than those in female patients (all P<0.05). The IgG and total antibodies in patients with re-detectable positive RNA test were both higher than those in patients without re-detectable positive RNA test, but the differences were not statistically significant (P=0.158, 0.060). The positive rate of SARS-CoV-2 IgG in the research group was 80.5% (33/41). SARS-CoV-2 IgG was positively correlated with total antibody (P<0.001). There was a positive correlation between CD4+T cell count and SARS-CoV-2 IgG (r=0.455, P=0.003). The positive rate of SARS-CoV-2 IgG, SARS-CoV-2 IgG amount and total antibody amount in the research group were significantly higher than those in the vaccine group (all P<0.001). ConclusionSARS-CoV-2 IgG of most COVID-19 patients one year after discharge is positive, and their SARS-CoV-2 total antibody is significantly higher than people vaccinated against COVID-19, which suggests that patients infected with SARS-CoV-2 can obtain lasting protection, but the protection may be gradually weaken over time. The degree of antibody attenuation in patients with re-detectable positive RNA test may be weaker. In the convalescence stage, the dynamics of SARS-CoV-2 IgG may be closely related to cellular immune function.
Objective To detect the expression of cytokeratin 20 (CK20) mRNA (micrometastasis) in regional lymph nodes and the serum activities of CD4+ cells, CD8+ cells and NK cells, serum levels of IL-2, IL-12 and sIL-2R in peripheral blood of patients with colorectal cancer; and to investigate the relationship between them. Methods Total 281 lymph nodes of 21 patients with colorectal cancer were collected. The positive expression of CK20 mRNA in lymph nodes was detect by reverse transcription-polymerase chain reaction (RT-PCR) and the metastasis in lymph nodes was detected by conventional pathological examination; the serum activities of CD4+ cells, CD8+ cells and NK cells were detected by flow cytometry and serum levels of IL-2, IL-12 and sIL-2R were detected by ELISA method in peripheral blood of patients with colorectal cancer. Results Among the positive metastasis in the 281 lymph nodes of the 21 patients, there were 16 (5.7%， 16/281) lymph nodes in 2 patients detected by pathological examination and 140 (49.8%， 140/281) lymph nodes in 10 patients by RT-PCR. There was a significant difference between the two measures in the aspects of the detection rate and the positive cases of lymph node metastasis in the 21 patients. Before operation, the serum activities of CD4+ cells, CD4+/CD8+ and NK cells, levels of IL-2 and IL-12 in 11 patients whose CK20 mRNA in regional lymph nodes were negative expression were higher than those in the other 8 patients whose lymph nodes metastasis were negative by conventional pathological examination but CK20 mRNA were positive expression （P＜0.05）; and the serum activity of CD8+ cells and level of sIL-2R in the former ones were lower than those in the latter ones （P＜0.05）. The serum activities of CD4+（r＝－0.769） cells, CD4+/CD8+（r=－0.755） and NK cells （r=－0.532）, the levels of IL-2 （r＝－0.834） and IL-12 （r＝－0.819） were negative correlated with the expression of CK20 mRNA （P＜0.05, P＜0.01）; and the activity of CD8+ cells （r=0.562） and level of sIL-2R （r=0.751） were positive correlated with the expression of CK20 mRNA （P＜0.05）. Conclusion The micrometastasis in lymph nodes is correlated significantly with the lower immune function of patients with colorectal cancer.
【摘要】 目的 探討海洋肽對惡性腫瘤化學治療（簡稱化療）患者營養狀況和免疫功能的影響。 方法 依照納入排除標準選取2010年3－11月66例惡性腫瘤化療患者，隨機分為試驗組和對照組，每組各33例。在正常飲食基礎上，試驗組和對照組分別服用海洋肽制劑和乳清蛋白制劑21 d，進行肝腎功能、營養狀況及免疫指標的測定。 結果 干預前后兩組肝腎功及血脂指標差異無統計學意義（Pgt;0.05），且均在正常范圍內。試驗組干預后體質指數（body mass index，BMI）、上臂圍、上臂肌圍、總蛋白、白蛋白、球蛋白、前白蛋白（prealbumin，PA）、轉鐵蛋白較干預前升高有統計學意義（Plt;0.05），而血紅蛋白和三頭肌皮褶厚度干預前后比較差異無統計學意義（Pgt;0.05）；對照組干預前后各指標差異均無統計學意義（Pgt;0.05）；試驗組BMI、PA的前后差值較對照組高（Plt;0.05），而其他指標差值在兩組間差異無統計學意義（Pgt;0.05）。兩組在干預前后組內比較及組間免疫指標差值比較，差異均無統計學意義（Pgt;0.05）。 結論 海洋肽作為部分氮源應用于惡性腫瘤化療患者，對患者的內臟蛋白、人體測量等均有一定的營養改善作用，但對免疫功能的影響不明顯，尚待進一步研究。【Abstract】 Objective To investigate the effects of marine peptide on the nutritional status and immune function in malignant tumor patients undergoing chemotherapy. Methods According to inclusive and exclusive criteria, 66 malignant tumor patients undergoing chemotherapy from March 2010 to November 2010 were randomized into study group and control group with 33 patients in each group. The patients in the study group were given marine collagen peptide whey protein while those in the control group were given whey protein for 21 days. Liver and kidney function, nutritional status and immune function were observed before and after intervention. Results Liver, kidney function and blood lipids of all the patients were within normal range, and were not significantly different between the two groups before and after intervention (P＞0.05). After intervention, body mass index (BMI), arm circumference, arm muscle circumference, total protein, albumin, globulin, prealbumin (PA), transferring protein of the study group were significantly increased (P＜0.05), but hemoglobin and triceps skinfold thickness had no significant changes (P＞0.05). There was no significant difference of the above parameters in the control group before and after intervention (P＞0.05). The magnitude of change of PA and BMI before and after intervention were higher in the study group than those in the control group (P＜0.05), while the magnitude of change of other parameters before and after intervention showed no significant difference between the two groups (P＞0.05). The immune function showed no significant change in both groups before and after intervention (P＞0.05), and it was also not significantly different between the two groups. Conclusion As part of dietary nitrogen sources, marine peptide can significantly improve nutritional status, including visceral protein and anthropometry in malignant tumor patients undergoing chemotherapy, but it has no significant effect on immune function, which should be further studied in detail.
