Distribution of natural killer cells and T-lymphocyte subsets in peripheral blood,gallbladder cancer and surrounding tissue

BACKGROUND: The patient with malignant tumor always show immunologic function drawback and ingravescent with tumor development, especially in the aspect of cell-mediated immunity. This study was undertaken to define the relationship between the immune function of local cells and cancer development by investigating the distribution of natural killer (NK) cells and T-lymphocyte subsets in peripheral blood, the cancer tissue and the tissue surrounding gallbladder carcinoma. METHODS: The numbers of CD4(+) and CD8(+) T-lymphocytes and NK cells were measured by flow cytometry in samples taken from gallbladder cancer tissue, the surrounding tissues and peripheral blood of 38 patients, and compared with the numbers in the peripheral blood and gallbladder tissue of 30 patients with cholecystitis as controls. RESULTS: The numbers of CD4(+) and CD8(+) T-cells and NK cells in gallbladder cancer tissues were significantly higher than those in the surrounding tissue and gallbladder with gallstone. However, the ratio of CD4(+)/CD8(+) was lower in the cancer tissue than that in the surrounding tissue and tissue from gallbladders with gallstones. The distribution of CD4(+) and CD8(+) T-cells and NK cells in mucous membrane of cholecystitis gallbladder and that in the tissue surrounding gallbladder cancer were significantly different. CONCLUSIONS: Disproportionate and imbalanced distribution of NK cells and subsets of T-lymphocytes occurs in the mucous membrane proper of gallbladder cancer and surrounding tissue. Although gallbladder cancer tissue has higher expressions of CD4(+), CD8(+) and NK cells, the immune function is low or in an inhibited state. In gallbladder cancer immunization therapy, local cellular immunological function should be enhanced and the protective barrier improved.

Effects of Intraoperative Administration of Dexmedetomidine on the Percentage of T-Lymphocyte Subsets and Natural Killer Cells in Patients with Colorectal Cancer

Study Objective: To observe the effect of dexmedetomidine (DEX) on T-lymphocyte subsets and natural killer (NK) cells in the peripheral blood of perioperative patients with colorectal cancer. Design: A random double-blind control clinical study. Setting: A university hospital. Patients: Forty patients with colorectal cancer, ASA I-П. Interventions: All patients were randomly divided into a DEX group (n = 20) and a control group (n = 20). Before induction of anesthesia, epidural catheters were placed in the L1-L2 or T12-L1 intervertebral spaces. The DEX group received 1 μg/kg of DEX (200 μg/50 ml) intravenously for 15 min prior to the surgery, which was then infused at a rate of 0.5 μg/kg/h until 30 min before the end of the surgery. The control group received an intravenous infusion of saline (50 ml) instead of DEX during the same periods as the DEX group. All patients received routine anesthesia and postoperative analgesia. Measurements: Blood samples from all patients were collected at the following time points: before anesthesia (T0), 24 h after surgery (T1), 48 h after surgery (T2) and 72 h after surgery (T3). Changes in T-lymphocyte subsets (CD3+, CD4+, CD8+, CD4+/CD8+) and NK cells were determined by flow cytometry. Main Results: Compared with the control group, the percentages of CD3+ and CD4+ cells and the CD4+/CD8+ ratio in the DEX group increased significantly from T1 to T3

The peri-operative changes of T-lymphocyte subsets in the elder esophageal carcinoma patients

Objective:The aim of the study was to observe and compare the trend of T-lymphocyte subsets in the elder and adult esophageal carcinoma patients postoperatively. Methods: Forty-four esophageal carcinoma patients, classified as ASA physical status I-II, were divided into two groups. Twenty-two patients aged than 65 years were grouped as elder patient group, and the rest twenty-two patients, served as adult patient group, were younger than 60 years old. The jugular venous blood samples were collected before induction of anesthesia (T1) as baseline, after completion of surgery (T2), on the first, second and fifth postoperative days (T3, T4 and T5), respectively. The blood counts of CD3+, CD4+ and CD8+T-lymphocyte were measured by flow cytometer. Results: Compared with the baseline level, the blood CD3+, CD4+ and CD4/CD8 levels were significantly decreased immediately after surgery, on the first and second postoperative days in the two groups (P<0.01), which returned to baseline values on the fifth postoperative day (P>0.05). On the fifth postoperative day, CD3+, CD4+ and CD4/CD8 levels in adult group were significantly higher than those in elder group (P<0.05). Conclusion: The postoperative immune function in elder patients recovered more slowly than that in adult.

Effects of Heat Clearing and Stasis Resolving Method on PTS,Inflammatory Factors and T-lymphocyte Subsets in Peripheral Blood of URM Patients with Suppressed Internal Heat

[Objectives]To explore the effects of heat clearing and stasis resolving method on prethrombotic state,inflammatory factors and T-lymphocyte subsets in peripheral blood of unexplained recurrent miscarriage(URM)patients with suppressed internal heat.[Methods]Thirty cases of URM patients with suppressed internal heat and 30 normal women were collected,and characteristics of changes in peripheral serum D-dimer(D-D),fibrin degradation product(FDP),fibrinogen(FIB),IL-6,IL-10 and TNF-α,CD,CD,CD,CD,CDlevels were detected.URM patients were treated with traditional Chinese medicine for clearing heat and resolving blood stasis for 3 menstrual cycles,and the changes of indicators before and after treatment were observed.[Results]Compared with normal women,the peripheral serum levels of D-D,IL-6,TNF-αand CDin URM patients with suppressed internal heat were increased(P<0.05),while the IL-10 lymphocyte level was significantly decreased(P<0.05);compared with that before treatment,the contents of D-D,IL-6,TNF-αand CDdecreased after 3 menstrual cycles(P<0.05),while the contents of IL-10 and CDT lymphocytes increased significantly(P<0.05).[Conclusions]The heat clearing heat and stasis resolving method can effectively improve the prethrombotic state of URM,and the action mechanism may be related to the regulation of immune and peripheral blood inflammatory factors.

mIL-2R,T cell subsets & hepatitis C

AIM: To study the levels of membrane interleukin-2 receptor (mIL-2R) and T cell subsets in peripheral blood mononuclear cells (PBMC) from patients with hepatitis C and their role in the pathogenesis of hepatitis C. METHODS: The levels of mIL-2R and T cells subsets in PBMC were detected by biotin- streptatividin (BSA) technique before and after stimulation with PHA in 203 patients with hepatitis C with HCV-RNA(+), anti-HCV(+), anti-HCV(-). RESULTS: The total expressive levels of mIL-2R before and after stimulation with PHA(0.03+/-0.01, 0.03+/-0.02, 0.04+/-0.02, 0.36+/-0.03), and T cell subsets in PBMC (0.62+/-0.06, 0.37+/-0.05, 0.35+/-0.07) were all lower in patients with hepatitis C than those in normal controls (0.66+/-0.07, 0.41+/-0.06, 0.31+/-0.05, P【0.01). Among the patients, the levels of mIL-2R were lower in silence than those in situation of PHA inducting (P【0.01). However, the levels of mIL-2R were similar in acute hepatitis C to that in chronic hepatitis C (P】0.05). The levels of CD(3)(+), CD(4)(+), CD(4)(+)/CD(8)(+) were lower and CD(8)(+) was higher in patients with acute and chronic hepatitis C with anti-HCV(+) than those in normal controls (0.62+/-0.06, 0.37+/-0.05, 0.35+/-0.07, 1.18+/-0.30, 0.61+/-0.07, 0.37+/-0.05, 1.39+/-0.33, 0.31+/-0.05, P【0.05-P【0.01). CONCLUSION: The cellular immunity is obviously changed in patients with hepatitis C. The levels of mIL-2R and activation of T cells are closely associated with chronicity of hepatitis C.

Effects of Radiofrequency Ablation on Lymphocyte Subsets and Type 1/Type 2 T Cell Subpopulations in Patients with Hepatocellular Carcinoma

Objective： To evaluate whether radiofrequency ablation （RFA） might have an influence on immune status in hepatocellular carcinoma （HCC） patients. Methods： We measured the T lymphocytes, B lymphocyte and NK cells, and determined the population of Thl, Th2, Tcl and Tc2 of peripheral blood samples taken from 26 HCC patients before and after RFA. Results： The proportion of Typel cells （Thl and Tcl） and NK cells were significantly increased after RFA, especially in patients of the following subgroups： male, age〉55 years, pathological grade Ⅰ-Ⅱ tumor, clinical stage Ⅰ-Ⅱ or Child-Pugh A and B. Conclusion： TypeⅠ cells and NK cells in HCC patients were increased in a short period after RFA.

Changes in T lymphocyte subsets after severe traumatic brain injury

BACKGROUND： Besides local changes of cranial parenchymal cells, hemorrhage, etc., severe traumatic brain injuries also cause the changes of total body fluid and various functions, and the changes of lymphocytes and T lymphocyte subsets should be paid more attention to. OBJECTIVE： To reveal the changing laws of T lymphocyte subsets after severe traumatic brain injury, and compare with mild to moderate brain injury. DESIGN： A comparative observation. SETTINGS： Department of Neurosurgery, Longgang District Buji People＇s Hospital of Shenzhen City; Central Laboratory of Shenzhen Hospital of Prevention and Cure for Chronic Disease. PARTICIPANTS： All the subjects were selected from the Department of Neurosurgery, Longgang District Buji People＇s Hospital of Shenzhen City from August 2002 to August 2005. Thirty patients with severe brain injury, whose Glasgow coma score （GCS） was ≤ 8 points, were taken as the experimental group, including 21 males and 9 females, aging 16 - 62 years. Meanwhile, 30 patients with mild traumatic brain injury were taken as the control group （GCS ranged 14- 15 points）, including 18 males and 12 females, aging 15 -58 years. All the subjects were in admission at 6 hours after injury, without disease of major organs before injury Informed consents were obtained from all the patients or their relatives. METHODS： （1） The T lymphocytes and the subsets in peripheral blood were detected with immunofluorescent tricolor flow cytometry at l, 3, 7 and 14 days after injury in both groups. （2） The conditions of pulmonary infections were observed at 4 days after injury. The differences of measurement data were compared with the t test. MAIN OUTCOME MEASURES： Changes of T lymphocytes subsets at 1 - 14 days after severe and mild or moderate traumatic injury. RESULTS： Finally, 28 and 25 patients with mild to moderate traumatic brain injury, whereas 25 and 21 patients with severe traumatic brain injury were analyzed at 7 and 14 days respectively, and the missed ones died due to the development of disease. （1） Changes of T lymphocyte subsets： At 1 and 3 days after injury, CD3, CD4, CD8, CD4/CD8 began to decrease, whereas CD8 increased in the experimental group, which were very significantly different from those in the control group （t =2.77 - 3.26, P 〈 0.01）, and began to recover at 7 days, which were significantly different from those in the control group （t = 2.06 - 2.24, P 〈 0.05）, and generally recovered to the normal levels at 14 days （P 〉 0.05）. （2） Conditions of pulmonary infections： At 4 days after injury, the rate of pulmonary infection was significantly different between the experimental group and control group [73% （22/30）, 0, x2=37.29, P 〈 0.01]. CONCLUSION： Patients with severe traumatic brain injury suffer from damages of cellular immune function at early period （within 7 days）, and they are easily to be accompanied by pulmonary infections.

STUDIES ON LYMPHOCYTE SUBSETS, HUMORAL IMMUNITY AND THEIR RELATIONSHIP WITH SELENIUM IN PATIENTS WITH KASHIN-BECK DISEASE

Objective To study the humoral immunity status and distribution pattern of lymphocyte subgroups of peripheral blood mononuclear cell (PBMC) in patients with Kashin-Beck Disease (KBD), and their relationship with erythrocyte selenium. Methods 23 X-ray diagnosed patients, 22 age- and sex- matched healthy children in KBD affected area (KAA), and 25 in KBD non-affected area (KNAA) were randomly selected. Immunohistochemistry with monoclonal antibodies anti-CD4, anti-CD8, anti-CD20 was conducted to analyze the lymphocyte subsets. Serum IgM, IgA, IgG, Complement C3 and C4 were assayed using rate nephelometry (Array 360 System, USA). The contents of erythrocyte selenium was determined by 2,3-diaminonaphthalene fluorescence assay. Results CD4+ and CD8+ cells percentage in PBMCs and serum IgA were significantly lower in KAA than those in KNAA(P< 0.05). CD20+ percentage in KAA displayed a decreasing trend compared to KNAA, although not statistically significantly. No statistical differences were found in CD4/CD8 ratio, serum IgG, IgM, C3 and C4 levels. Erythrocyte selenium level in KAA still showed a pronounced decrease compared to that in KNAA. Correlation analysis showed that erythrocyte selenium contents had a strong association with the CD4 cell percentage (r= 0.625, P< 0.05), as well as serum IgA (r= 0.462, P< 0.05). In addition, a moderate correlation between the serum IgA and CD4+ percentage (r= 0.130, P> 0.05) was found. Conclusion These results suggested that children in KAA had a comparably low cellular immunity level and their humoral immunity status was also in a state of moderate immune suppression. Of this immune disorder in Kashin-Beck disease patients, selenium deficiency probably played a critical role via affecting the distribution pattern of peripheral blood lymphocyte. Selenium-deficiency and immune impairment maybe both have something to do with the cause-effect chain of KBD.

STUDY OF T－LYMPHOCYTE SUBSETS AND INTERLEUKIN－2 AND INTERLEUKIN－2 RECEPTOR OF RESPIRATORY SYNCYTIAL VIRUS PNEUMONIA

T-Lymphocyte subsets and humoral immune and the activity of IL-2 and IL-2R in respiratory syncytial virus (RSV) pneumonia in 26 cases were tested. The result showed in the patients with RSV pneumonia the averages of T3 and T4 were 37.56±1.46% and 27. 15±8. 02% respectively,They were significantly lower than 53.4 ±9.2% and 35.5±7.7% of averages of T3 and T4 in healthy controlled group (both. P< 0. 001 ), the average of T3 was 22. 73±7.06%, it was lower an 26. 7±6. 3 % of T8 in controlled group (P<0. 02 );the ratio of T4/T8 was 1. 245±0. 399 ,there was no significant difference from 1. 35 ±0. 17 of the ratio in controlled group (P > 0. 1). The mean value of IgG was 1. 177± 0. 3685g/L, it was significantly lower than 1. 427± 0. 498g/L of that in controlled group(P < 0. 005). The mean values of IgA and IgM were 0. 1136±0.0393g/L and 0. 768±0. 353g/L respectively, they were significantly lower than 0. 2706 ±0. 876g/L and 0. 122±0. 061g/L of IgA and IgM in controlled group. The activity of IL-2 and IL-2R were 17. 46 ±5. 79%, and 28. 32 ±5. 924% respectively, they were significantly lower than 30. 22 ±14. 55% and 39. 53±8. 61 % of those in healthy group (both P < 0. 001). The severe the pneuumonia, the greater the lowering of IL-2 and IL-2R. These about results suggested that RSV could greatly suppress the immune function of the patients, inducing secondary immunodeficiency, leading to repeated breather and asthma.

Immunology of Kaschin-Beck Disease:Studies on lymphocyte subsets, humoral immunity and their relationship with selenium

Objective To study the humoral immunity status and distribution pattern of lymphocyte subgroups of peripheral blood mononuclear cell (PBMC) in patients with Kaschin-Beck Disease (KBD), and their relationship with erythrocyte selenium.Methods 23 X-ray diagnosed patients, 22 age- and sex- matched healthy children in KBD affected area (KAA), And 25 in KBD non-affected area (KNAA) were randomly selected. Immunohistochemistry with monoclonal antibodies anti-CD4, anti-CD8, anti-CD20 was conducted to analyze the lymphocyte subsets. Serum IgM, IgA, IgG, Complement C3 and C4 were assayed using rate nephelometry (Array 360 System, USA). The contents of erythrocyte selenium was determined by 2,3-diaminonaphthalene fluorescence assay. Results CD4+ and CD8+ cells percentage in PBMCs and serum IgA were significantly lower in KAA than those in KNAA(P<0.05). CD20+ percentage in KAA displayed a decreasing trend compared to KNAA, although not statistically significantly. No statistical differences were found in CD4/CD8 ratio, serum IgG, IgM, C3 and C4 levels. Erythrocyte selenium level in KAA still showed a pronounced decrease compared to that in KNAA. Correlation analysis showed that erythrocyte selenium contents had a strong association with the CD4 cell percentage (r=0.625,P<0.05), and also a close relationship with serum IgA (r=0.462,P<0.05). In addition, we detected a moderate correlation between the serum IgA and CD4+ percentage (r=0.130, P>0.05).Conclusion Taken together, our results suggested that children in KAA had a comparably low cellular immunity level manifested by the marked depression of CD4 and CD8 cells percentage, and their humoral immunity status was also in a state of moderate immune suppression. Of this immune disorder in KBD patients, selenium deficiency probably played a critical role via affecting the distribution pattern of peripheral blood lymphocyte. Selenium-deficiency and immune impairment maybe both have something to do with the cause-effect chain of KBD.

Endothelial function and T-lymphocyte subsets in patients with overlap syndrome of chronic obstructive pulmonary disease and obstructive sleep apnea

Background:The coexistence of chronic obstructive pulmonary disease (COPD) and obstructive sleep apnea (OSA) is termed overlap syndrome (OS).COPD and OSA both have increased risks of developing cardiovascular diseases.This study aimed to explore if patients with OS exhibited a higher prevalence of cardiovascular complications,and if patients with OS exhibited vascular endothelial dysfunction and abnormalities in the cellular immune function of T lymphocytes.Methods:Totally 25 patients with stable COPD (COPD group),25 patients with OSA (OSA group),25 patients with OS (OS group),and 20 healthy adults (control group) were enrolled between January 2017 and December 2017 from the Respiratory Department of Tianjin Medical University General Hospital.The clinical characteristics of the four groups were collected and the expression levels of soluble vascular cell adhesion molecule-1 (sVCAM-1),tumor necrosis factor-α(TNF-α),and T-lymphocyte subsets were detected.One-way analysis of variance,x^2 test and Pearson correlation were used to manage the data.Results:The prevalence of hypertension and coronary heart disease was significantly higher in the OS group than in the control,OSA,and COPD groups (x^2 =20.69,P < 0.05 and x^2 =11.03,P < 0.05,respectively).The levels of sVCAM-1 and TNF-α were significantly higher in the OS group than in other groups (F =127.40,P < 0.05 and F =846.77,P < 0.05,respectively).The percentage of CD4+ lymphocytes and CD4+/CD8+ were both significantly lower in the OS group than in any other group (F =25.40,P < 0.05 and F =75.08,P < 0.05,respectively).There were significantly negative correlations in the levels of sVCAM-1 and TNF-α with CD4^+/CD8^+ lymphocytes (r =-0.77,P < 0.05 and r =-0.83,P < 0.05,respectively).Conclusions:The prevalence of hypertension and coronary heart disease was higher in patients with OS than in patients with either OSA or COPD alone.Patients with OS exhibited more severe vascular endothelial injury,stronger inflammatory response,and lower cellular immune function.

Regulatory Effect of Langchuang Serial Recipes on T-Lymphocyte Subsets Th and Tc in Patients with Systemic Lupus Erythematosus

Objective： To study the principle of clearing Fei （肺）, cooling blood, and detoxification as well as nourishing yin and moisening Fei （abbr. as CCD-NM） in regulating the levels of peripheral T-lymphocyte subsets Th and Tc cells to explore its mechanism for lowering the incidence of infection in patients with systemic lupus erythematosus iSLE）. Methods： Sixty SLE patients without complicated infection were assigned to the treatment group and the control group, 30 in each group. The control group was treated with Western medicine alone, while the treatment group was treated with the same program of Western medicine, but additionally administered with either Langchuang No.1 （狼疮 Ⅰ号） or 2 （狼疮 Ⅱ 号）, serial concerted Chinese recipes, applied respectively in patients in the active stage or in the resting stage. The total time of treatment for both groups was 1 year. Further, a healthy control group was set up with 20 healthy subjects. The expressions of Thl, Th2, and Tcl and Tc2 cells in peripheral blood were detected and compared with those in the healthy control group. Results： （1） As compared with the healthy control group, ratios of Thl/Th2 and Tcl/Tc2 in SLE patients, whether complicated with infection or not, were significantly lower （P〈0.05 or P〈0.01）. （2） Comparison between patients with complications and those uncomplicated with infection showed that the two ratios and Thl expression were lower and Tc2 was higher in the former than those in the latter （all P〈0.05）. （3） Ratios of Thl/Th2 and Tcl/Tc2 increased after treatment in patients of both the treatment group and the control group （P〈0.05 and P〈0.01）, but the changes in the treatment group were more significant （P〈0.05）. Conclusion： The principle of CCD-NM could regulate the Th and Tc subsets toward equilibrium in SLE patients, which might be one of the mechanisms of action for alleviating complicated infection.

Clinical characteristics and T-lymphocyte subsets in 48 acquired immune deficiency syndrome patients with cytomegalovirus infections

Objective To investigate the clinical features and Tlymphocytes subsets in patients with acquired immunedeficiency syndrome ( AIDS ) and cytomegalovirus(CMV) infection. Methods A total of 48 hospitalizedpatients with human immunodeficiency virus (HIV)-1 /AIDS and CMV infections were recruited at Peking UnionMedical College Hospital from Jan 2010 to Aug 2017.Their clinical features and immune function were retrospectivelyanalyzed. Patients with only HIV/AIDS inprevious study were recruited as controls. Results All 48patients were at C3 stage, including 36 men and12 women. Five of them were younger than 30 years old,33 cases within 31 - 50 years old,and 10 cases olderthan 50 years old.

自制红细胞裂解液对流式细胞术测定外周血T淋巴细胞亚群的影响研究

目的比较实验室配制的红细胞裂解液的裂解时间对流式测定SD大鼠和食蟹猴外周血T淋巴细胞亚群的影响。方法(1)取15只食蟹猴的肝素钠抗凝血各50μl,血样与荧光检测抗体Per CP-CD3/FITC-CD8/PE-CD4孵育后分别经自制和市售红细胞裂解液裂解一段时间,比较样本经自制与市售裂解液处理不同时间后其CD3~+CD4~+,CD3~+CD8~+和CD3~+淋巴细胞的平均荧光强度(median fluorescence intensity,MFI)等数值的差异;(2)取15只SD大鼠的EDTA-K2抗凝血各50μl,血样与荧光检测抗体APC-CD3/FITC-CD4/PE-CD8a孵育后,分别经自制红细胞裂解液和市售裂解液裂解一段时间,比较样本经自制与市售裂解液处理不同时间后CD3~+CD4~+和CD3~+CD8~+淋巴细胞的MFI等数值的差异;(3)取15只大鼠EDTA-K2抗凝血各50μl,血样与荧光检测抗体APC-CD3/PE-CD4孵育后,分别经自制红细胞裂解液和市售裂解液裂解一段时间,比较样本经自制与市售裂解液处理不同时间后PE-CD4~+的MFI差异。结果(1)食蟹猴外周血经自制红细胞裂解液,裂解时间约15min和5min的FITC-CD8~+的MFI分别为1745±173和2439±253,淋巴细胞百分比分别为47.9%±7.2%和42.1%±7.6%;裂解时间约15min和5min的PE-CD4~+的MFI分别为12924±892和13695±984,淋巴细胞百分比分别为38.7%±7.2%和33.1%±7.2%。裂解时间约15min比裂解5min的FITC-CD8~+(t=8.779,P<0.0001)和PE-CD4~+(t=2.250,P<0.05)的MFI降低;淋巴细胞百分比占比(t=2.139,2.162,均P<0.05)增高,差异具有统计学意义。食蟹猴外周血经市售红细胞裂解液裂解15min,FITC-CD8~+,PE-CD4~+,Per CP-CD3~+的MFI分别为2413±240,12428±1208和1015±123。与自制裂解液裂解5min比较,市售裂解液裂解15min的PE-CD4~+和Per CP-CD3~+的MFI降低,差异具有统计学意义(t=3.150,4.862,均P<0.01)。(2)SD大鼠外周血经自制红细胞裂解液,裂解时间5min和2min的FITC-CD4~+的MFI分别为55.72±14.10和225.08±12.44;裂解5min与裂解2min的FITC-CD4~+的MFI比较差异有统计学意义(t=34.89,P<0.001);SD大鼠外周血经市售红细胞裂解液,裂解5min和15min的FITC-CD4~+的MFI分别为277.02±30.36和310.04±43.56,PE-CD8a~+的MFI分别为3453.43±443.19和3211.28±357.85;裂解时间5min与裂解15min的FITC-CD4~+和PE-CD8a~+的MFI比较差异有统计学意义(t=2.409,P<0.01)。(3)SD大鼠经自制红细胞裂解液,裂解5min和2min的PE-CD4~+的MFI分别为1766±67,1765±51,差异无统计学意义(t=0.045,P>0.05)。结论与市售裂解液比较,自制红细胞裂解液可缩短裂解时间。将FITC荧光抗体更换为PE荧光抗体后,在一定的裂解时间内可消除对大鼠测定淋巴细胞MFI的影响;但随着裂解时间延长会造成FITC和PE荧光抗体MFI值的下降。

RDW、NLR、T细胞亚群联合诊断结缔组织病相关性间质性肺疾病的临床价值

目的 探究RDW、NLR、T细胞亚群联合诊断结缔组织病相关性间质性肺疾病的临床价值。方法 选取2021年1月到2021年12月四川广元市中心医院收治的86例结缔组织病患者,根据是否发生结缔组织病相关性间质性肺疾病进行分组,将46例结缔组织病相关性间质性肺疾病患者作为CTD-ILD组,40例为结缔组织病未合并有相关性间质性肺疾病患者作为CTD组。对比两组的RDW、NLR、T细胞亚群水平,采用Point-biserial相关分析RDW、NLR、T细胞亚群与结缔组织病相关性间质性肺疾病发生的关联性;并绘制受试者工作曲线(ROC),分析RDW、NLR、T细胞亚群(CD4^(+)、CD8^(+))联合诊断结缔组织病相关性间质性肺疾病的临床价值。结果 CTD-ILD组患者的RDW、NLR水平明显高于CTD组,CD4^(+)、CD8^(+)水平明显低于对照组,差异均有统计学意义(t=2.630、3.073,3.225、2.846;P<0.05)。Point-biserial相关分析显示,RDW、NLR与结缔组织病相关性间质性肺疾病呈正相关,T细胞亚群与结缔组织病相关性间质性肺疾病呈负相关(P<0.05)。ROC分析结果显示,RDW、NLR、T细胞亚群(CD4^(+)、CD8^(+))及联合诊断结缔组织病相关性间质性肺疾病的曲线下面积分别为0.658,0.672,0.690、0.673,0.771。结论 RDW、NLR、T细胞亚群均与结缔组织病相关性间质性肺疾病具有一定的相关性,联合诊断结缔组织病相关性间质性肺疾病具有较高的应用价值。

外周血CD8^(+)T淋巴细胞亚群检测对过敏性鼻炎临床疗效的评估价值

目的探讨外周血CD8^(+)T淋巴细胞亚群检测对过敏性鼻炎(AR)临床疗效的评估价值。方法前瞻性选取2021年3月~2022年2月温州市中西医结合医院耳鼻咽喉科门诊治疗的120例AR患者和40例健康志愿者,分别设为研究组和对照组,比较两组外周血CD8^(+)T细胞、CD8^(+)CD28^(+)T细胞、CD8^(+)CD28-T细胞比率;研究组接受鼻用激素联合口服抗组胺药物治疗方案,根据治疗效果分为有效组(n=107)和无效组(n=13),比较有效组和无效组治疗前CD8^(+)T细胞、CD8^(+)CD28^(+)T细胞、CD8^(+)CD28-T细胞比率;Pearson相关性分析法分析外周血CD8^(+)T淋巴细胞亚群水平与鼻部症状总评分(totalnose symptomscore,TNSS)的相关性;以受试者工作特征(ROC)曲线分析治疗前CD8^(+)T淋巴细胞亚群对AR临床疗效的预测价值。结果研究组治疗前外周血CD8^(+)CD28^(+)T细胞比率高于对照组,CD8^(+)CD28-T细胞比率低于对照组(P<0.05)。研究组总有效率为89.17%;有效组治疗前CD8^(+)CD28^(+)T细胞比率低于无效组,CD8^(+)CD28-T细胞比率高于无效组(P<0.05);Pearson相关性分析显示,CD8^(+)CD28^(+)T细胞比率与TNSS评分呈正相关(r=0.324,P=0.006),CD8^(+)CD28-T细胞比率与TNSS评分呈负相关(r=-0.541,P=0.000)。ROC曲线结果显示,CD8^(+)T细胞、CD8^(+)CD28^(+)T细胞、CD8^(+)CD28-T细胞比率评估AR治疗无效的曲线下面积(AUC)(95%CI)分别为0.647(0.555~0.732)、0.683(0.592~0.765)、0.911(0.845~0.955),其中CD8^(+)CD28-T细胞的评估效能优于CD8^(+)T细胞、CD8^(+)CD28^(+)T细胞比率(P<0.05)。结论AR患者外周血CD8^(+)CD28^(+)T细胞比率升高,CD8^(+)CD28-T细胞比率降低,CD8^(+)T细胞比率相对稳定,治疗前CD8^(+)CD28-T细胞比率可作为预测AR患者的临床疗效的参考指标。

腺样体肥大患儿机体免疫功能变化研究

<正>腺样体也称咽扁桃体或增殖体,属于淋巴组织,表面呈桔瓣样。正常生理情况下,儿童6~7岁时腺样体发育至最大,青春期后逐渐萎缩,成人后基本消失~[1]。腺样体位于鼻咽顶后壁处,病理性肥大易引起鼻堵、张口呼吸、耳闷、听力下降等症状,最终造成慢性鼻-鼻窦炎、阻塞性睡眠呼吸暂停低通气综合征及分泌性中耳炎等疾病,给儿童的颌面骨发育、智力发育造成严重影响。

桂西地区骨关节结核患者T细胞亚群及红细胞表面免疫分子表达的研究

目的了解骨关节结核与肺结核患者外周血T淋巴细胞亚群和红细胞CD35、CD59的变化及其意义。方法收集2013年10月至2015年4月收治的60例骨关节结核患者,60例肺结核患者,选择同期健康体检者90人作为对照组。采用流式细胞仪抗体双标法检测外周静脉血T淋巴细胞亚群(CD3^+、CD4^+、CD8^+和CD4^+/CD8^+)和红细胞CD35、CD59的表达。结果与对照组比较,骨关节结核组和肺结核组CD3^+、CD4^+和CD4^+/CD8^+显著降低(P<0.05),CD8^+明显增高(P<0.05);红细胞CD35、CD59表达显著降低(P<0.05)。骨关节结核组与肺结核患组CD35与CD3^+、CD4^+呈正相关(P<0.05),而与CD8^+、CD4^+/CD8^+无明显相关性(P>0.05)。结论骨关节结核与肺结核患者T细胞免疫和红细胞免疫与常人比较均存在显著差异,但其是原因还是结果尚需进一步研究。

儿童感染肺炎支原体后细胞免疫状态的变化及临床意义

目的:探讨儿童感染支原体肺炎后细胞免疫功能的变化及临床意义。方法:分别采用流式细胞术和细胞酶免疫分析法,对38例肺炎支原体感染患儿的T淋巴细胞亚群(CD3+、CD4+、CD8+CD28+、CD8+CD28-)的表达和红细胞补体受体1(CR1,即CD35)进行分子定量检测,45例普通肺炎患儿作为对照组检测上述指标。结果:支原体肺炎组患儿急性期红细胞CRl表达明显下降,CD3+、CD4+、CD8+CD28+表达减少,而CD8+CD28-表达升高,与对照组比较有显著性差异(P<0.01)。在恢复期上述情况有所改善,但与对照组相比仍有显著性差异(P<0.05),相关分析表明红细胞CR1与CD8+CD28-呈负相关(R=-0.512,P<0.05)。结论:支原体肺炎儿童存在红细胞免疫功能低下及T淋巴细胞活化异常,其中CD8+CD28-细胞群的活化障碍和红细胞免疫功能的持续异常,可能是发生继发性过敏性咳嗽的重要细胞免疫学基础。

十二指肠球部溃疡患者红细胞免疫功能与T细胞亚群的变化

探讨幽门弯曲菌 (Helicobaclerpylori,Hp)阳性的十二指肠球部溃疡 (DU)患者红细胞免疫和T细胞亚群的变化及其相关关系。应用免疫黏附法和SAP法对 4 0例Hp阳性、6例Hp阴性的DU患者红细胞免疫活性 (RBC C3bRR、RBC ICR和RBC TRR)和外周血T细胞亚群 (CD3+ 、CD4 + 、CD8+ 和CD4 + /CD8+ )进行了检测。结果发现Hp阳性DU患者RBC C3bRR、RBC TRR、CD3+ 、CD4 + 和CD4 + /CD8+ 较Hp阴性患者无明显降低。Hp阳性的DU患者RBC C3bRR、RBC TRR、CD3+ 、CD4 + 和CD4 + /CD8+ 显著低于健康对照组 (P <0.0 1) ,而RBC ICR和CD8+ 显著高于对照组(P <0.0 1)。Hp阳性的DU患者疗程结束后 ,38例Hp被根除 ,根除率为 95 %。Hp根除且溃疡愈合者为 35例 ,愈合率为 86 % ,其红细胞免疫功能和T细胞亚群基本恢复正常。Hp根除但溃疡未愈合者 11例 ,溃疡愈合但Hp未根除者 2例 ,其红细胞免疫功能和T细胞亚群均有所改善。此外 ,红细胞免疫功能 (RBC C3bRR和RBC TRR)与T细胞亚群 (CD4 + /CD8+ )的变化呈明显正相关 (P <0.0 5 )。因此 ,红细胞免疫与T细胞亚群可能均参与了DU的发生、发展和转归。