Searching for Peptide Ligands of Interleukin-2 Receptor α Chain in Phage-displayed Peptide Library

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Serum soluble interleukin-2 receptor levels in patients with chronic hepatitis B virus infection and its relation with antiHBc

AIM： To investigate the relationship between serum soluble interleukin-2 receptor （sIL-2R） level and anti-HBc in patients with chronic hepatitis B virus （HBV） infection. METHODS： Sera from 100 patients with chronic HBV infection and 30 healthy controls were included in this study. The patients were divided into group A [HBsAg （＋）, HBeAg （＋） and anti-HBc （＋）, n = 50] and group B [HBsAg （＋）, HBeAg （＋） and anti-HBc （-）, n = 50]. sIL-2R levels were determined using ELISA. HBV DNA and alanine aminotransferase （ALT） were also detected. RESULTS： Serum sIL-2R levels were significantly higher in patients with chronic HBV infection than in healthy controls. Moreover, serum sIL-2R levels were significantly higher in patients with HBsAg （＋）, HBeAg （＋） and antiHBc （＋） （976.56±213.51×10^3 U/L） than in patients with HBsAg （＋）, HBeAg （＋） and anti-HBc （-） （393.41±189.54 ×10^3 U/L, P〈 0.01）. A significant relationship was found between serum sIL-2R and ALT levels （P〈 0.01） in patients with chronic HBV infection, but there was no correlation between sIL-2R and HBV DNA levels. The anti-HBc status was significantly related to the age of patients （P〈 0.01）. CONCLUSION： The high sIL-2R level is related to positive anti-HBc in chronic hepatitis B patients. Positive anti-HBc may be related to T-lymphocyte activation and negative anti-HBc may imply immune tolerance in these patients.

Changes in soluble interleukin-2 receptor level in serum and Na^+ -K^+ -exchanging ATPase activity in semen of infertile men caused by antisperm antibody

Aim: To explore the possible mechanisms of male infertility caused by antisperm antibody (AsAb). Methods: Thesoluble interleukin-2 receptor (sIL-2R) level in serum was analyzed by ELISA and Na^+ -K^+ -exchanging ATPase activi-ty in semen by phosphorus (Pi) assay. Results: The slL-2R level in serum was significantly higher and the Na^+ -K^+ -exchanging ATPase activity in semen significantly lower in AsAb positive infertile men when compared with thecontrols. Conclusion: The AsAb titer varies with the slL-2R level in serum. A decrease in Na^+ -K^+ -exchangingATPase activity in semen may play a role in male infertility caused by AsAb.

Fluence of Glucosidorum Tripterygii Totorum on joint and serum soluble interleukin-2 receptor in patients with ankylosing spondylitis

Objective The current study was designed to find out the effect of Glucosidorum Tripterygii Totorum (GTT) on the serum level of soluble interleukin-2 receptor (sIL-2R) in patient with ankylosing spondylitis (AS). Method 29 patients with active AS were selected to take GTT (1mg per kg) three times a day for one year. After that, its curative effect was evaluated. The serum level of sIL-2R of these patients was measured by sandwich ELISA method and was compared with that of normal subjects. Result The serum level of sIL-2R in active AS patients was obviously higher than that of the non-active AS patients. (P<0.01). The total effective rate of GTT on AS was 89.6%, while clinical relief rate 27.6%, obvious effective rate 44.8%, effective rate 17.2% and non-effective rate 10.4%. The patients’ serum level of sIL-2R after therapy was significantly lower than that before therapy except patients with no effect. (P<0.05). Conclusion GTT has positive curative effect on active AS patients and could cause obvious decrease of the serum level of sIL-2R. The serum level of sIL-2R can be used as an important index of activity of AS and as a guide of therapy.

Study of the Effect of Leeching on Plasma Endothelin and Soluble Interleukin-2 Receptor in Patients with Systemic Lupus Erythematosus

Objective: to explore the mechanism of leeching in treating systemic lupus erythematosus (SLE). Methods: Forty-four patients with SLE were randomly divided into conventional corticosteroid treated group (control group, n =20) and conventional treatment group with leeching intervention added (leeching group, n =24). Before and after treatment the concentration of plasma endothelin (ET) and soluble interleukin-2 receptor (sIL-2R) were determined. Results: Before treatment the level of plasma ET and sIL-2R in the SLE patients were all higher than those in the normal healthy group, ( P <0.01). But after treatment the level of these in both groups were significantly improved than those of before treatment ( P <0.05), and comparison between these two treated groups showed that the difference between them was significant ( P <0.05). Conclusion: Leeching added to conventional treatment of SLE could be more effective in improving the level of plasma ET and sIL-2R, and ameliorating the impairment of renal tissues.

Elevated pancreatic enzymes, IgM, soluble interleukin-2 receptor in anti-GADab(+) type 1 diabetes

Type 1 diabetes can be classified into immune-mediated diabetes (type 1A) and idiopathic diabetes, which lacks immunological evidence for beta cell autoimmunity (type 1B). Type 1A diabetes is characterized by the presence of the anti-glutamic acid decarboxylase antibody (anti-GADab). Fulminant type 1 diabetes is classified as type 1B diabetes, and characterized by the absence of anti-GADab, flu-like symptoms, and elevated serum exocrine pancreatic enzymes. We report a type 1 diabetic patient who showed flu-like symptoms, elevated serum exocrine pancreatic enzymes, and an extremely high-titer of anti-GADab, manifesting the characteristics of both type 1A and fulminant type 1 diabetes.

Effects of Aprotinin on Serum Interleukin-2 and Soluble Interleukin-2 Receptor during Cardiopulmonary Bypass

Interleukin-2 and its receptor are of importance in regulating immunity responses. The changes of interleukin-2 (IL-2) and soluble interleukin-2 receptor (IL-2R) during heart valve (s) replacement operation and effects of aprotinin on them were observed. Twenty patients undergoing heart valve (s) replacement were randomly divided into two groups: control group (n=10) and apro- tinin group (n=10). In aprotinin group, 1 000 000 KIU aprotinin was given by vein injection and then 2 000 000 KIU was given as a bolus in prime. Blood samples were collected before CPB, right after CPB and on the 1st, 3rd and 7th postoperative day (POD) for serum IL-2 and sIL-2R determination. Results showed that after CPB, IL-2 was reduced and slL-2R increased. Meanwhile, serum IL-2R was lower in aprotinin group than that of control. It is concluded that the immunity depression after CPB is associated with low level of IL-2 and high level of sIL-2R and aprotinin can ameliorate the situation.

Expression of estrogen receptor alpha,nerve growth factor,interleukin-2,and androgen receptor in the cerebellum of ovariectomized rats following soybean isoflavone treatment

BACKGROUND： Studies have shown that estrogen receptor alpha （ERα）, nerve growth factor （NGF）, interleukin-2 （IL-2）, and androgen receptor （AR） expression in the cerebellum decreases when estrogen levels decrease in vivo. Soybean isoflavone, a type of non-steroid estrogen with similar molecular structure and function to estradiol, exhibits estrogen-like characteristics. OBJECTIVE： To investigate the effects of various doses of soybean isoflavone on expression of ERa, NGF, IL-2, and AR in the cerebellum of ovariectomized rat, and to determine whether there is a dose-dependent effect.DESIGN, TIME AND SETTING： Controlled trial at the cellular and molecular level. The study was performed at the Experimental Animal Engineering Center, College of Veterinary Medicine, Sichuan Agricultural University from July 2006 to May 2008. MATERIALS： Soybean isoflavone, comprised of daidzin, genistein and isoflavone, was provided by Taiyuan Yuantai Biochemical Industry, China. The ERα, NGF, IL-2, and AR in situ hybridization kit, rabbit anti-rat ERa, NGF, IL-2, and AR monoclonal antibodies, and SABC kit were purchased from Wuhan Boster Biological Technology, China. METHODS： A total of 50 female, Sprague Dawley rats, aged 3 months, were randomly assigned to 5 groups, with 10 animals in each group. With the exception of the sham-operation group （abdominal cavity opening alone）, all rats underwent bilateral ovariectomy. At 14 days after surgery, rats in the high-, middle-, and low-dose soybean isoflavone groups were subcutaneously injected with 1.5, 1.0, and 0.5 mg/kg soybean isoflavone, respectively, every 2 days for 6 consecutive weeks. Rats in the sham-operation and ovariectomized groups were subcutaneously injected with absolute alcohol （0.5 mL/kg）. MAIN OUTCOME MEASURES： Expression levels and distribution of ERα, NGF, IL-2, and AR in the cerebellum were detected by immunohistochemistry and in situ hybridization. RESULTS： Compared with the sham-operation group, immunoreactive products and hybridization signals of ERa, NGF, IL-2, and AR were significantly decreased in the cerebellar cortex and nuclei of ovariectomized rats （P 〈 0.05 or P 〈 0.01）, but increased following soybean isoflavone treatment. In particular, levels of the high-dose soybean isoflavone group were almost restored to levels of the sham-operation group （P 〉 0.05）. The immunoreactive products were primarily located in the cytoplasm and neurites, and rarely in the cell membrane and nuclei. However, the hybridization signals were predominantly located in the nuclei, but rarely in the cytoplasm, cell membrane, or neurites. CONCLUSION： Soybean isoflavone upregulated ERα, NGF, IL-2, and AR protein and gene expression in a dose-dependent manner, and played an important role in sustaining and protecting structure and function of cerebellar neurons. Moreover, the similarity of expression patterns of these molecules indicated that they were mutually interactive during the regulation of soybean isoflavone to the cerebellum.

INTERLEUKIN-2 (IL-2) PRODUCTION AND INTERLEUKIN-2 RECEPTOR EXPRESSION IN PATIENTS WITH APLASTIC ANEMIA

IL-2 production and IL-2 receptor (Tac antigen) of the peripheral blood mononuclear cells in 30 patients with aplastic anemic (AA) were studied. We found that mononuclear cells from patients produce spontaneously IL-2 in the absence of exogenous lee-tin stimulation, the proportion of Tac+ cells in mononuclear cells increased. The release of IL-2 and or Tac antigen expression were elevated in almost every patient with AA. The plasma from patients stimulate mitogen-induced blastogenesis and Tac antigen expression of normal human lymphocytes. Immunological 1 abnormalities of patients with AA possibly might represents secondary response to bone marrow depression.

CHANGES ON RECEPTOR EXPRESSIONAND PRODUCTION OF INTERLEUKIN-2 IN CIRCULATING LYMPHOCYTE POPULATION AFTER OPEN HEART SURGERY

To evaluate the change of perioperative cell mediated immunity after cardiac operation with cardiopul-monary bypass (CPB), so as to provide some information for timely prevention and treatment against post-operative immunological disorder, 40 patients were studied. By searching for the effects of CPB and anes-thesia, interleukln-2 receptor (IL-2R) expression upon the surface of peripheral blood mononuclear cells(PBMC), as well as interleukin-2 (IL-2) production in vitro was traced 55 min after anesthesia, at end ofCPB, on postoperative 1, 7, and 14 day versus preanesthesia control. Our data demonstrated that expres-sion of IL-2R on PBMC was significantly suppressed in all comparing with the baseline value, meanwhile,IL-2 production in vitro also statistically dropped. However,no statistical difference was found on perioper-ative IL 2R expression and IL-2 synthesis in the cholecystectomy group. We conclude that postoperativeimmunological disorder seems to be the main factor, which could be denoted as reduced IL 2R expressionon PBMC and lL-2 synthesis in vitro for sepsis, even multiple system organ failure developed after cardiacsurgery.

Role of P2X_7 receptors in the development of diabetic retinopathy

The P2X7 receptor is one of the members of the family of purinoceptors which are ligand-gated membrane ion channels activated by extracellular adenosine 5'-triphosphate. A unique feature of the P2X7 receptor is that its activation can result in the formation of large plasma membrane pores that allow not only the flux of ions but also of hydrophilic molecules of up to 900 Da. Recent studies indicate that P2X7-mediated signaling can trigger apoptotic cell death after ischemia and during the course of certain neurodegenerative disorders. Expression of the P2X7 receptor has been demonstrated in most types of cells in the retina. This purinoceptor mediates the contraction of pericytes and regulates the spatial and temporal dynamics of the vasomotor response through cell-to-cell electrotonic transmission within the microvascular networks. Of potential clinical significance, investigators have found that diabetes markedly boosts the vulnerability of retinal microvessels to the lethal effect of P2X7 receptor activation. This purinergic vasotoxicity may result in reduced retinal blood flow and disrupted vascular function in the diabetic retina. With recent reports indicating an association between P2X7 receptor activation and inflammatory cytokine expression in the retina, this receptor may also exacerbate the development of diabetic retinopathy by a mechanism involving inflammation.

乳腺癌组织中COL11A1表达与ER、PR、HER-2和Ki-67的相关性分析

目的探讨乳腺癌组织中Ⅺ型胶原α1(COL11A1)表达与雌激素受体(ER)、孕激素受体(PR)、人表皮生长因子受体-2(HER-2)和Ki-67的关系。方法采用免疫组化EnVision两步法检测18例乳腺纤维腺瘤组织和120例乳腺癌组织(36例原位癌组织、84例浸润性癌组织)中COL11A1的表达,同时对乳腺癌组织进行ER、PR、HER-2和Ki-67免疫组化检测,对HER-2(2+)进行荧光原位杂交检测;分析COL11A1表达与乳腺癌临床病理特征和多种免疫标记(ER、PR、HER-2和Ki-67)的关系。结果免疫组化结果显示COL11A1主要表达于乳腺癌细胞中。在纤维腺瘤组织中COL11A1表达呈弱阳性。COL11A1在原位癌中表达高于浸润性乳腺癌(P<0.05)。COL11A1表达与乳腺癌患者的年龄、部位、肿块大小和淋巴结转移无关(P>0.05),而中、高分化组织的COL11A1表达水平高于低分化组织,差异有统计学意义(P<0.05)。进一步分析COL11A1与乳腺癌其他免疫标记间的相关性发现,在Ki-67高表达组织中COL11A1低表达的比例更高,差异有统计学意义(P<0.05),而其他3种标记与COL11A1的表达无关(P>0.05)。结论COL11A1在浸润性乳腺癌中表达较原位癌低,在低分化乳腺癌中表达水平较中高分化更低,且与Ki-67表达有关,提示COL11Al表达在乳腺癌发生发展过程中是动态变化的,为乳腺癌的诊断治疗提供潜在标记物。

Atypical chemokine receptor CCRL2 is overexpressed in prostate cancer cells

Atypical chemokine receptors have recently emerged as important molecular players in health and diseases; they affect chemokine availability and function and impact a multitude of pathophysiological events, including the tumorigenesis process. This family of atypical receptors comprises five members: ACKR1/DARC, ACKR2/D6,ACKR3/CXCR7, ACKR4/CCRL1, and ACKR5/CCRL2. This work evaluated the differential expression of these receptors in prostate cancer using quantitative PCR. Further evaluation of CCRL2 at the protein level confirmed its overexpression in a metastatic cell line and in malignant prostatic tissues from patients. CCRL2, a presumed member of the atypical chemokine receptor family, plays a key role in lung dendritic cell trafficking to peripheral lymph nodes.Recent studies have reported the expression of CCRL2 in different human cancer cell lines and tissues. However, its function and expression in prostate cancer has not been previously addressed.

Severe acute respiratory syndrome coronavirus 2 infection: Role of interleukin-6 and the inflammatory cascade

Since December 2019,a novel coronavirus that represents a serious threat to human lives has emerged.There is still no definite treatment for severe cases of the disease caused by this virus,named coronavirus disease 2019(COVID-19).One of the most considered treatment strategies targets the exaggerated immune regulator,and interleukin(IL)-6 is a crucial pro-inflammatory mediator.Severe acute respiratory syndrome coronavirus 2(SARSCoV-2)cases show an elevated level of IL-6 related to disease severity.IL-6 activity can be inhibited by the following:IL-6 itself,IL-6 signaling pathways such as Janus kinase and signal transducer and activator of transcription(JAK-STAT),gp130,IL-6R,and downstream activated ILs,such as IL-17 and IL-6 cytokine.Currently,according to these studies and their results,IL-6 blockade with anti-IL-6 or its receptor antibodies such as tocilizumab in COVID-19 is beneficial in severe cases and may reduce the mortality rate.JAK-STAT inhibitors block the cytokine storm by inhibiting several crucial pro-inflammatory mediators such as TNF-αand IL-6 and have shown various results in clinical trials.IL-6 induces IL-17 secretion,and IL-17 is involved in the pathogenesis of inflammatory processes.Clinical trials of anti-IL-17 drugs are currently recruiting,and anti-gp130 antibody is preclinical.However,this agent has shown positive effects in inflammatory bowel disease clinical trials and could be tested for SARS-CoV-2.This study aimed to review the role of IL-6 in the cytokine storm and studies regarding IL-6 and blockade of its inflammatory pathways in COVID-19 to determine if any of these agents are beneficial for COVID-19 patients.

Argon preconditioning protects neuronal cells with a Toll-like receptor-mediated effect

The noble gas argon has the potential to protect neuronal cells from cell death.So far,this effect has been studied in treatment after acute damage.Preconditioning using argon has not yet been investigated.In this study,human neuroblastoma SH-SY5Y cells were treated with different concentrations of argon(25%,50%,and 74%;21%O_(2),5%CO_(2),balance nitrogen)at different time intervals before inflicting damage with rotenone(20μM,4 hours).Apoptosis was determined by flow cytometry after annexin V and propidium iodide staining.Surface expressions of Toll-like receptors 2 and 4 were also examined.Cells were also processed for analysis by western blot and qPCR to determine the expression of apoptotic and inflammatory proteins,such as extracellular-signal regulated kinase(ERK1/2),nuclear transcription factor-κB(NF-κB),protein kinase B(Akt),caspase-3,Bax,Bcl-2,interleukin-8,and heat shock proteins.Immunohistochemical staining was performed for TLR2 and 4 and interleukin-8.Cells were also pretreated with OxPAPC,an antagonist of TLR2 and 4 to elucidate the molecular mechanism.Results showed that argon preconditioning before rotenone application caused a dose-dependent but not a time-dependent reduction in the number of apoptotic cells.Preconditioning with 74%argon for 2 hours was used for further experiments showing the most promising results.Argon decreased the surface expression of TLR2 and 4,whereas OxPAPC treatment partially abolished the protective effect of argon.Argon increased phosphorylation of ERK1/2 but decreased NF-κB and Akt.Preconditioning inhibited mitochondrial apoptosis and the heat shock response.Argon also suppressed the expression of the pro-inflammatory cytokine interleukin-8.Immunohistochemistry confirmed the alteration of TLRs and interleukin-8.OxPAPC reversed the argon effect on ERK1/2,Bax,Bcl-2,caspase-3,and interleukin-8 expression,but not on NF-κB and the heat shock proteins.Taken together,argon preconditioning protects against apoptosis of neuronal cells and mediates its action via Toll-like receptors.Argon may represent a promising therapeutic alternative in various clinical settings,such as the treatment of stroke.

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.

Soluble Interleukin 2 Receptor-Alpha (sIL-2Rα) in the Peripheral Blood of Dogs—Comparison of Malignant Neoplasia with Other Diseases

Background: Cytokines are mediators of diseases. Expression levels in the blood could be of clinical relevance. Objective: sIL-2Rα is used as a marker for different malignancies in human medicine. The aim of this study was to show if sIL-2Rα is detectable and if there is any correlation to different diseases in dogs. Methods: For this purposes sIL-2Rα concentrations in the blood were measured in healthy dogs, in dogs with different non-neoplastic diseases and benign tumors and in dogs with malignant tumors. Serum levels of sIL-2Rα were measured by using a human specific enzyme linked immunosorbent assay (ELISA). Results: Measurement of sIL-2Rα was successful in most of the samples. Dogs with diseases have significantly increased serum levels of sIL-2Rα compared to healthy controls. sIL-2Rα serum levels are higher in patients with non-neoplastic diseases and benign tumors than in those with malignant neoplasia. There is a strong correlation between sIL-2Rα and leukocyte count. Conclusion: Measurements of sIL-2Rα in serum may be helpful in detecting stages and grades of inflammation in the progression of disease. sIL-2Rα could actually not be used as an indicator for malignant diseases in dogs like in humans. The strong correlation between sIL-2Rα and the leukocyte count indicates the inflammatory response to the disease. This could be helpful in giving a prognosis in some cases, because the inflammatory reaction is of prognostic relevance in different diseases including malignant and non-malignant neoplasia. Although the results of our research studies were very promising, further studies should be performed with a canine ELISA.

DETECTION OF PLASMA SOLUBLE INTERLEUKIN－2 RECEPTOR IN PATIENTS WITH SEVERE AND CHRONIC ACTIVE HEPATITIS B

Plasma levels of soluble interleukin-2 receptor (sIL-2R) in patients with chronic active hepatitis B (CAHB) or severe hepatitis B (SHB) were measured quantitatively by 'sandwich' ELISA with monoclonal antibodies in order to explore the change of sIL-2R levels, its clinical significance,and its relation to liver damage. The results showed that the plasma sIL-2R levels in patients with CAHB and SHB were much higher than those in normal controls (P < 0. 01 ), and the level ofplasma sIL-2R in patients with SHB was greatly higher than that in patients with CAHB. These results suggest that there is close relation between plasma level of sIL-2R, the clinical types of hepatitis B,and the severity of liver damage. In addition, there is no significant difference in plasma levels of sIL-2R between acute severe hepatitis B (ASHB), subacute severe hepatitis B (SASHB), and chronic severe hepatitis B (CSHB). No relation was found between sIL-2R level and hepatitis B virusreplication activity.

血清lncNEAT1和sTREM-2在SAE老年患者中的表达及临床意义

目的研究脓毒症相关性脑病(SAE)老年患者血清长链非编码RNA核富含丰富的转录本1(lncNEAT1)和可溶性髓样细胞触发受体-2(sTREM-2)的表达及临床意义。方法选取2018年1月至2021年1月于该院诊治的224例脓毒症老年患者分为SAE组(合并SAE,84例)和对照组(未并发脑损伤,140例)。根据28 d生存情况,将SAE组分为存活组(44例)和死亡组(40例)。荧光定量PCR检测血清lncNEAT1水平,酶联免疫吸附试验检测血清sTREM-2水平。多因素Logistic回归分析影响SAE老年患者生存预后的因素。受试者工作特征曲线分析各指标对SAE老年患者生存预后的诊断价值。结果SAE组血清lncNEAT1(4.68±0.79 vs.2.03±0.37)、sTREM2[(25.14±4.34)pg/mL vs.(11.40±3.71)pg/mL]高于对照组,差异均有统计学意义(t=27.285、21.743,均P<0.05)。SAE老年患者血清lncNEAT1、sTREM2水平与降钙素原(PCT)、中枢神经特异性蛋白(S100β)、人神经元特异性烯醇化酶(NSE)、急性生理学与慢性健康状况评分系统Ⅱ(APACHEⅡ)评分、序贯器官衰竭评分(SOFA评分)均呈正相关(r=0.451~0.674,均P<0.05)。血清lncNEAT1、sTREM2升高是影响SAE老年患者不良生存预后的独立危险因素。血清lncNEAT1、sTREM2联合检测评估SAE老年患者生存预后的曲线下面积为0.874,显著高于血清lncNEAT1、sTREM2单一指标,曲线下面积为0.797、0.820(Z=3.864、3.872,均P<0.05)。结论SAE老年患者血清lncNEAT1、sTREM2表达升高,是影响老年SAE生存预后的独立危险因素。

急性胰腺炎病人血清长链非编码RNA核富集转录体1、Toll样受体2表达变化及临床意义研究

目的探讨急性胰腺炎(AP)病人血清长链非编码RNA核富集转录体1(LncRNA NETA1)、Toll样受体2(TLR2)表达及临床意义。方法选取2017年5月至2020年12月石家庄平安医院收治的AP病人125例为研究对象,根据急性生理学和慢性健康状况评价Ⅱ(APACHEⅡ)对AP病人进行评分,并将病人分为轻症组56例,重症组69例;根据住院期间重症组AP病人预后情况,将病人分为预后不良25例,预后良好44例。同期选取该院健康体检者130例为健康组。实时荧光定量逆转录聚合酶链反应(qRT-PCR)检测血清LncRNA NETA1水平,酶联免疫吸附测定(ELISA)检测血清TLR2水平;Pearson相关性分析探索AP病人血清LncRNA NEAT1、TLR2水平相关性及二者与病人APACHEⅡ评分的关系;受试者操作特征曲线(ROC曲线)分析血清LncRNA NEAT1、TLR2对AP病人重症的评估价值。结果与健康组比较,AP组血清LncRNA NEAT1(2.16±0.31比1.00±0.00)、TLR2水平[(6.43±1.05)µg/L比(0.59±0.24)µg/L]升高(P<0.05);与轻症组比较,重症组AP病人血清LncRNA NEAT1(2.31±0.33比1.98±0.27)、TLR2水平[(6.89±1.16)µg/L比(5.86±0.92)µg/L]升高(P<0.05);与预后良好组比较,预后不良组重症AP病人血清LncRNA NEAT1(2.43±0.36比2.14±0.27)、TLR2水平[(7.12±1.24)µg/L比(6.45±1.02)µg/L]升高(P<0.05);Pearson相关性分析结果表明,AP病人血清LncRNA NEAT1、TLR2呈正相关(r=0.65,P<0.05),二者与病人APACHEⅡ评分均呈正相关(r=0.50、0.52,P<0.05);ROC曲线结果显示,血清LncRNA NEAT1水平、TLR2单独及联合评估AP病人重症的曲线下面积(AUC)分别为0.73[95%CI:(0.64,0.82)]、0.75[95%CI:(0.67,0.84)]、0.88[95%CI:(0.82,0.94)],血清LncRNA NEAT1联合TLR2水平预测AP病人重症的AUC明显大于二者单独预测(P<0.05)。结论AP病人血清LncRNA NEAT1、TLR2表达水平显著升高,且与病人严重程度和预后有关,临床上检测LncRNA NEAT1、TLR2表达可能有助于AP病人的病情评估。