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Interferon-gamma release assays as a tool for differential diagnosis of gastrointestinal tuberculosis
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作者 Tsvetelina Velikova Anita Aleksandrova 《World Journal of Clinical Cases》 SCIE 2024年第27期6015-6019,共5页
In this editorial,we comment on an article published in a recent issue of the World Journal of Clinical Cases.There is a pressing need for reliable tools for diagnosing tuberculosis(TB)of the gastrointestinal tract.De... In this editorial,we comment on an article published in a recent issue of the World Journal of Clinical Cases.There is a pressing need for reliable tools for diagnosing tuberculosis(TB)of the gastrointestinal tract.Despite advancements in the diagnosis and treatment,TB remains a global health challenge.Ali et al demon-strated that TB may mimic gastrointestinal conditions,such as gastric outlet obstruction,causing a delay in the diagnosis.Furthermore,the latter complication is frequently observed during infections,including Helicobacter pylori,and rarely is related to TB,as in the presented case.In line with this,we think that laboratory tests based on interferon-gamma release assays can be a helpful tool for diagnosing latent TB paced in the gastrointestinal tract.Innovative strategies and approaches for diagnosing latent/active extra pulmonary TB are crucial for establishing the diagnosis early and enhancing treatment strategies to mitigate the global burden of TB. 展开更多
关键词 TUBERCULOSIS Gastrointestinal tuberculosis interferon-gamma release assay IGRA Primary gastroduodenal tuberculosis Gastric outlet obstruction Case report
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Deregulation of interferon-gamma receptor 1 expression and its implications for lung adenocarcinoma progression
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作者 Angeles C Tecalco-Cruz Karen H Medina-Abreu +3 位作者 Enrique Oropeza-Martínez Jesus Zepeda-Cervantes AleidaVázquez-Macías Marina Macías-Silva 《World Journal of Clinical Oncology》 2024年第2期195-207,共13页
Interferon-gamma(IFN-γ)plays a dual role in cancer;it is both a pro-and an antitumorigenic cytokine,depending on the type of cancer.The deregulation of the IFN-γcanonic pathway is associated with several disorders,i... Interferon-gamma(IFN-γ)plays a dual role in cancer;it is both a pro-and an antitumorigenic cytokine,depending on the type of cancer.The deregulation of the IFN-γcanonic pathway is associated with several disorders,including vulner-ability to viral infections,inflammation,and cancer progression.In particular,the interplay between lung adenocarcinoma(LUAD)and viral infections appears to exist in association with the deregulation of IFN-γsignaling.In this mini-review,we investigated the status of the IFN-γsignaling pathway and the expression level of its components in LUAD.Interestingly,a reduction in IFNGR1 expression seems to be associated with LUAD progression,affecting defenses against viruses such as severe acute respiratory syndrome coronavirus 2.In addition,alterations in the expression of IFNGR1 may inhibit the antiproliferative action of IFN-γsignaling in LUAD. 展开更多
关键词 interferon-gamma IFNGR1 JAK1 ANTIVIRAL ANTI-TUMOR Lung adenocarcinoma
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Evaluation of Interferon-Gamma Release Assay Testing and Tuberculin Skin Test for Early Diagnosis of Tuberculosis in Children and Adolescents
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作者 Yelda Sorguç Miray Çelebi Yılmaz +4 位作者 Yüce Ayhan Yakup Yaman Şener Tulumoğlu Aybüke Akaslan Kara İlker Devrim 《Open Journal of Pediatrics》 2024年第3期558-567,共10页
Background: This study aimed to evaluate the diagnostic value of interferon-γ release assay (IGRA), a sensitive microbiological diagnostic method, in children and adolescents with suspected tuberculosis in a country ... Background: This study aimed to evaluate the diagnostic value of interferon-γ release assay (IGRA), a sensitive microbiological diagnostic method, in children and adolescents with suspected tuberculosis in a country with a high burden of tuberculosis. Method: This study included 581 children and adolescents aged 4 - 19 years who were suspected of having tuberculosis, were latently infected with Mycobacterium tuberculosis, and had received at least one dose of BCG vaccine between April 17, 2019, and February 24, 2021. The study evaluated the TST results of 106 patients who had a positive Quantiferon test and were suspected of having tuberculosis. Results: The study included 581 patients aged between 4 and 19 years. Of these, 106 patients tested positive for the Quantiferon test, while 19 were indeterminate and 456 were negative. The Quantiferon test positivity rate was 18.24%. Among the 106 QFT-Plus-positive cases, 23 patients also tested positive for TST. The difference in distribution was found to be statistically significant. Conclusion: The QFT-Plus test is considered an alternative to TST and other microbiological diagnostic methods for early tuberculosis diagnosis, particularly in children and adolescents. 展开更多
关键词 Interferon Gamma Release Assay CHILDREN Tuberculin Test CHILDREN Latent Tuberculosis
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Interferon-gamma and tumor necrosis factor-alpha synergistically enhance the immunosuppressive capacity of human umbilical-cordderived mesenchymal stem cells by increasing PD-L1 expression 被引量:1
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作者 Zhuo Chen Meng-Wei Yao +10 位作者 Zhi-Lin Shen Shi-Dan Li Wei Xing Wei Guo Zhan Li Xiao-Feng Wu Luo-Quan Ao Wen-Yong Lu Qi-Zhou Lian Xiang Xu Xiang Ao 《World Journal of Stem Cells》 SCIE 2023年第8期787-806,共20页
BACKGROUND The immunosuppressive capacity of mesenchymal stem cells(MSCs)is dependent on the“license”of several proinflammatory factors to express immunosuppressive factors such as programmed cell death 1 ligand 1(P... BACKGROUND The immunosuppressive capacity of mesenchymal stem cells(MSCs)is dependent on the“license”of several proinflammatory factors to express immunosuppressive factors such as programmed cell death 1 ligand 1(PD-L1),which determines the clinical therapeutic efficacy of MSCs for inflammatory or immune diseases.In MSCs,interferon-gamma(IFN-γ)is a key inducer of PD-L1 expression,which is synergistically enhanced by tumor necrosis factor-alpha(TNF-α);however,the underlying mechanism is unclear.AIM To reveal the mechanism of pretreated MSCs express high PD-L1 and explore the application of pretreated MSCs in ulcerative colitis.METHODS We assessed PD-L1 expression in human umbilical-cord-derived MSCs(hUC-MSCs)induced by IFN-γand TNF-α,alone or in combination.Additionally,we performed signal pathway inhibitor experiments as well as RNA interference experiments to elucidate the molecular mechanism by which IFN-γalone or in combination with TNF-αinduces PD-L1 expression.Moreover,we used luciferase reporter gene experiments to verify the binding sites of the transcription factors of each signal transduction pathway to the targeted gene promoters.Finally,we evaluated the immunosuppressive capacity of hUC-MSCs treated with IFN-γand TNF-αin both an in vitro mixed lymphocyte culture assay,and in vivo in mice with dextran sulfate sodium-induced acute colitis.RESULTS Our results suggest that IFN-γinduction alone upregulates PD-L1 expression in hUC-MSCs while TNF-αalone does not,and that the co-induction of IFN-γand TNF-αpromotes higher expression of PD-L1.IFN-γinduces hUCMSCs to express PD-L1,in which IFN-γactivates the JAK/STAT1 signaling pathway,up-regulates the expression of the interferon regulatory factor 1(IRF1)transcription factor,promotes the binding of IRF1 and the PD-L1 gene promoter,and finally promotes PD-L1 mRNA.Although TNF-αalone did not induce PD-L1 expression in hUCMSCs,the addition of TNF-αsignificantly enhanced IFN-γ-induced JAK/STAT1/IRF1 activation.TNF-αupregulated IFN-γreceptor expression through activation of the nuclear factor kappa-B signaling pathway,which significantly enhanced IFN-γsignaling.Finally,co-induced hUC-MSCs have a stronger inhibitory effect on lymphocyte proliferation,and significantly ameliorate weight loss,mucosal damage,inflammatory cell infiltration,and up-regulation of inflammatory factors in colitis mice.CONCLUSION Overall,our results suggest that IFN-γand TNF-αenhance both the immunosuppressive ability of hUC-MSCs and their efficacy in ulcerative colitis by synergistically inducing high expression of PD-L1. 展开更多
关键词 Human umbilical-cord-derived mesenchymal stem cells Programmed cell death 1 ligand 1 IMMUNOMODULATION interferon-gamma Tumor necrosis factor-alpha Ulcerative colitis
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Modulation of the activation of Statl by the interferon-gamma receptor complex
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作者 Christopher D Krause Wen He +1 位作者 Sergei Kotenko Sidney Pestka 《Cell Research》 SCIE CAS CSCD 2006年第1期113-123,共11页
The activation of Statl by the interferon-gamma (IFN-γ) receptor complex is responsible for the transcription of a significant portion of IFN-γ induced genes. Many of these genes are responsible for the induction ... The activation of Statl by the interferon-gamma (IFN-γ) receptor complex is responsible for the transcription of a significant portion of IFN-γ induced genes. Many of these genes are responsible for the induction of an apoptotic state in response to IFN-γ. In the absence of Stat 1 activation, IFN-γ instead induces a proliferative response. Modifying Stat 1 activation by IFN-γ may have pharmacological benefits. We report that the rate of activation of Statl can be altered in HeLa cells by overexpressing either the IFN-γ R1 chain or the IFN-γ R2 chain. These alterations occur in hematopoietic cell lines: Raji cells and monocytic cell lines, which have average and above-average IFN-γ R2 surface expression, activate Statl similarly to HeLa cells and HeLa cells overexpressing IFNγR2, respectively. The rapid Statl activation seen in HeLa cells can be inhibited by overexpressing a chimeric IFN-γR2 chain that does not bind Jak2 or (when high concentrations of IFN-γ are used) by overexpressing IFN-γR1. These data are consistent with a model in which the recruitment of additional Jak2 activity to a signaling complex accelerates the rate of Statl activation. We conclude that the rate of activation of Statl in cells by IFN-γ can be modified by regulating either receptor chain and speculate that pharmacological agents which modify receptor chain expression may alter IFN-γ receptor signal transduction. 展开更多
关键词 interferon-gamma Stat 1 interferon-gamma receptor KINETICS electrophoretic mobility shift assay
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Assessment by meta-analysis of interferon-gamma for the diagnosis of tuberculous peritonitis 被引量:18
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作者 Si-Biao Su Shan-Yu Qin +2 位作者 Xiao-Yun Guo Wei Luo Hai-Xing Jiang 《World Journal of Gastroenterology》 SCIE CAS 2013年第10期1645-1651,共7页
AIM:To investigate the performance and diagnostic accuracy of interferon-gamma(IFN-γ) for tuberculous peritonitis(TBP) by meta-analysis.METHODS:A systematic search of English language studies was performed.We searche... AIM:To investigate the performance and diagnostic accuracy of interferon-gamma(IFN-γ) for tuberculous peritonitis(TBP) by meta-analysis.METHODS:A systematic search of English language studies was performed.We searched the following electronic databases:MEDLINE,EMBASE,Web of Science,BIOSIS,LILACS and the Cochrane Library.The Standards for Reporting Diagnostic Accuracy initiative and Quality Assessment for Studies of Diagnostic Accuracy tool were used to assess the methodological quality of the studies.Sensitivity,specificity,and other measures of the accuracy of IFN-γ concentration in the diagnosis of peritoneal effusion were pooled using random-effects models.Receiver operating characteristic(ROC) curves were applied to summarize overall test performance.Two reviewers independently judged study eligibility while screening the citations.RESULTS:Six studies met the inclusion criteria.The average inter-rater agreement between the two reviewers for items in the quality checklist was 0.92.Analysis of IFN-γ level for TBP diagnosis yielded a summary estimate:sensitivity,0.93(95%CI,0.87-0.97);specificity,0.99(95%CI,0.97-1.00);positive likelihood ratio(PLR),41.49(95%CI,18.80-91.55);negative likelihood ratio(NLR),0.11(95%CI,0.06-0.19);and diagnostic odds ratio(DOR),678.02(95%CI,209.91-2190.09).χ 2 values of the sensitivity,specificity,PLR,NLR and DOR were 5.66(P = 0.3407),6.37(P = 0.2715),1.38(P = 0.9265),5.46(P = 0.3621) and 1.42(P = 0.9220),respectively.The summary receiver ROC curve was positioned near the desirable upper left corner and the maximum joint sensitivity and specificity was 0.97.The area under the curve was 0.99.The evaluation of publication bias was not significant(P = 0.922).CONCLUSION:IFN-γ may be a sensitive and specific marker for the accurate diagnosis of TBP.The level of IFN-γ may contribute to the accurate differentiation of tuberculosis(TB) ascites from non-TB ascites. 展开更多
关键词 TUBERCULOSIS TUBERCULOUS PERITONITIS interferon-gamma DIAGNOSIS META-ANALYSIS
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Effectiveness of interferon-gamma release assays for differentiating intestinal tuberculosis from Crohn's disease:A meta-analysis 被引量:14
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作者 Wen Chen Jun-Hua Fan +2 位作者 Wei Luo Peng Peng Si-Biao Su 《World Journal of Gastroenterology》 SCIE CAS 2013年第44期8133-8140,共8页
AIM:To investigate the clinical usefulness of interferon-gamma release assays(IGRAs)in the differential diagnosis of intestinal tuberculosis(ITB)from Crohn’s disease(CD)by meta-analysis.METHODS:A systematic search of... AIM:To investigate the clinical usefulness of interferon-gamma release assays(IGRAs)in the differential diagnosis of intestinal tuberculosis(ITB)from Crohn’s disease(CD)by meta-analysis.METHODS:A systematic search of English language studies was performed.We searched the following databases:Medline,Embase,Web of Science and the Cochrane Library.The Standards for Reporting Diagnostic Accuracy initiative and Quality Assessment for Studies of Diagnostic Accuracy tool were used to assess the methodological quality of the studies.Sensitivity,specificity,and other measures of the accuracy of IGRAs in the differential diagnosis of ITB from CD were pooled and analyzed using random-effects models.Receiver operating characteristic curves were applied to summarize overall test performance.Two reviewers independently judged study eligibility while screening the citations.RESULTS:Five studies met the inclusion criteria.The average inter-rater agreement between the two reviewers for items in the quality checklist was 0.95.Analysis of IGRAs for the differential diagnosis of ITB from CD produced summary estimates as follows:sensitivity,0.74(95%CI:0.68-0.80);specificity,0.87(95%CI:0.82-0.90);positive likelihood ratio,5.98(95%CI:3.79-9.43);negative likelihood ratio,0.28(95%CI:0.18-0.43);and diagnostic odds ratio,26.21(95%CI:14.15-48.57).The area under the curve was 0.92.The evaluation of publication bias was not significant(P=0.235).CONCLUSION:Although IGRAs are not sensitive enough,they provide good specificity for the accurate diagnosis of ITB,which may be helpful in the differential diagnosis of ITB from CD. 展开更多
关键词 INTESTINAL TUBERCULOSIS Crohn’s disease interferon-gamma META-ANALYSIS
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The Expression of Interleukin-17, Interferon-gamma, and Macrophage Inflammatory Protein-3 Alpha mRNA in Patients with Psoriasis Vulgaris 被引量:10
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作者 李家文 李东升 谭志建 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2004年第3期294-296,共3页
Summary: To investigate the role of Interleukin-17 (IL-17), Interferon-gamma (IFN-γ), and macrophage inflammatory protein-3 alpha (MIP-3α) in the pathogenesis of psoriasis, reverse transcriptase-polymerase chain re... Summary: To investigate the role of Interleukin-17 (IL-17), Interferon-gamma (IFN-γ), and macrophage inflammatory protein-3 alpha (MIP-3α) in the pathogenesis of psoriasis, reverse transcriptase-polymerase chain reaction (RT-PCR) was used to semi-quantitatively analyze the mRNA expression of IL-17, IFN-γ, and MIP-3α in 31 psoriatic lesions and 16 normal skin tissues. The results showed that the mRNA of the three cytokines was present in all specimens. And the expression level of IL-17 mRNA in skin lesions was 1.1416±0.0591, which was significantly higher than that in normal controls (0.8788±0.0344, P<0.001). The expression levels of IFN-γ mRNA were 1.1142±0.0561 and 0.9050±0.0263, respectively, with significant difference(P<0.001). And the expression levels of MIP-3α mRNA in psoriatic lesions was 1.1397±0.0521, which was markedly higher than that in normal controls (0.8681±0.0308, P<0.001). These findings indicate that up-regulated expression of IL-17, IFN-γ, and MIP-3α might be involved in the pathogenesis of psoriasis. 展开更多
关键词 Psoriasis vulgaris INTERLEUKIN-17 interferon-gamma macrophage inflammatory protein-3 alpha
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Retinal stem cells transplantation combined with copolymer-1 immunization reduces interferon-gamma levels in an experimental model of glaucoma 被引量:2
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作者 Xia Zhou Xiao-Bo Xia 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2011年第6期594-598,共5页
AIM: To explore the effect of immunization with copolymer-1 (COP-1) and retinal stem cells (RSCs) transplantation on interferon-gamma (IFN-gamma) levels in a rat experimental glaucoma model. METHODS: An experimental g... AIM: To explore the effect of immunization with copolymer-1 (COP-1) and retinal stem cells (RSCs) transplantation on interferon-gamma (IFN-gamma) levels in a rat experimental glaucoma model. METHODS: An experimental glaucoma was induced by argon laser photocoagulation of the episcleral veins and limbal plexus in the right eye of rats. Immediately following glaucoma induction, rats were immunized with COP-1. RSCs were cultured and transplanted intravitreally into the eyes of glaucoma model animals 1 week post-laser treatment. Six experimental groups were used: COP-1/RSC, PBS/RSC, COP-1/PBS, PBS/PBS, glaucoma model group, and a normal control group. The concentration of IFN-gamma in aqueous humor (AH) and serum was measured by enzyme-linked immunosorbent assay (ELISA) in each of the six groups. Retinal ganglion cell (RGC) survival was assessed by quantifying apoptosis using Hoechst staining. RESULTS: Concentrations of IFN-gamma in AH and serum of rats that had undergone glaucoma induction were higher than those of non-induced control rats. The concentrations of IFN-gamma in AH and serum of the COP-1/RSCs treated group were determined to be 2371.9ng/L and 710.9ng/L, respectively, which were significantly lower than those in the other treated groups (P<0.05). In fact, IFN-gamma levels in the dual treated group were reduced to background levels. The COP-1/RSC group had lower number of apoptotic RGCs than the other three experimental groups (P<0.05). CONCLUSION: The reduced levels of IFN-gamma in AH and serum of the COP-1/RSC group may be related to synergistic effects between RSCs transplantation and COP-1 immune modulation. It is likely that the lower levels of IFN-gamma prevented RGCs glaucomatous apoptasis. 展开更多
关键词 GLAUCOMA interferon-gamma RSC transplantation COP-1 immunization
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Capillary Electrophoretic Immunoassay with Laser-induced Fluorescence Detection for Interferon-gamma 被引量:2
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作者 HuaZHANG HaiMingWEI WenRuiJIN 《Chinese Chemical Letters》 SCIE CAS CSCD 2004年第1期121-122,共2页
Capillary electrophoretic immunoassay with laser-induced fluorescence detection for recombinant human interferon-gamma (IFN-g) was established. The limits of detection for three forms of IFN-g are 6.9 ng/L, 5.7 ng/L ... Capillary electrophoretic immunoassay with laser-induced fluorescence detection for recombinant human interferon-gamma (IFN-g) was established. The limits of detection for three forms of IFN-g are 6.9 ng/L, 5.7 ng/L and 5.0 ng/L, respectively. 展开更多
关键词 Capillary electrophoretic immunoassay interferon-gamma.
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Interferon-gamma release assays in tuberculous uveitis:a comprehensive review 被引量:1
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作者 Usanee Tungsattayathitthan Sutasinee Boonsopon +2 位作者 Nattaporn Tesavibul Tararaj Dharakul Pitipol Choopong 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2022年第9期1520-1528,共9页
·Tuberculous uveitis(TBU)comprises a broad clinical spectrum of ocular manifestations,making its diagnosis challenging.Ophthalmologists usually require evidence from investigations to confirm or support a clinica... ·Tuberculous uveitis(TBU)comprises a broad clinical spectrum of ocular manifestations,making its diagnosis challenging.Ophthalmologists usually require evidence from investigations to confirm or support a clinical diagnosis of TBU.Since direct isolation of the causative organism from ocular specimens has limitations owing to the small volume of the ocular specimens,resultant test positivities are low in yield.Immunodiagnostic tests,including the tuberculin skin test and interferon-gamma release assays(IGRAs),can help support a clinical diagnosis of TBU.Unlike the tuberculin skin test,IGRAs are in vitro tests that require a single visit and are not affected by prior Bacillus Calmette-Guerin vaccination.Currently,available IGRAs consist of different techniques and interpretation methods.Moreover,newer generations have been developed to improve the sensitivity and ability to detect active tuberculosis.This narrative review collates salient practice points as a reference for general ophthalmologists,such as evidence for the utilization of IGRAs in patients with suspected TBU,and summarizes basic knowledge and details of clinical applications of these tests in a clinical setting. 展开更多
关键词 ocular tuberculosis tuberculous uveitis interferon-gamma release assays REVIEW
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Influence of interferon-gamma on the differentiation of cholinergic neurons in rat embryonic basal forebrain and septal nuclei
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作者 Yanhong Luo Lin An 《Neural Regeneration Research》 SCIE CAS CSCD 2006年第3期213-216,共4页
BACKGROUND: Interferon-gamma (IFN-γ) can make neurons in basal forebrain and septal nuclei differentiate into cholinergic neurons by treating the cells in cerebral cortex of newborn rats, without the inhibition fr... BACKGROUND: Interferon-gamma (IFN-γ) can make neurons in basal forebrain and septal nuclei differentiate into cholinergic neurons by treating the cells in cerebral cortex of newborn rats, without the inhibition from IFN-γ antibody. The important effect of IFN-γ on the development and differentiation of neurons has been found by some scholars. OBJ EClIVE:To investigate whether IFN-γ has differentiational effect on cholinergic neurons in basal forebrain and septal nuclei, and make clear that the increased number of cholinergic neurons is resulted by cell differentiation or cell proliferation. DESIGN : Controlled observation trial SETTING: Department of Cell Biology, Medical School, Beijing University MATERIALS: Sixty-eight female Wistar rats at embryonic 16 days, weighing 250 to 350 g, were enrolled in this study, and they were provided by the Experimental Animal Center, Medical School, Beijing University. IFN-γ was the product of Gibco Company. METHODS: This study was carried out in the Department of Cell Biology, Medical School, Beijing University and Daheng Image Company of Chinese Academy of Sciences during September 1995 to December 2002. The female Wistar rats at embryonic 16 days were sacrificed, and their fetuses were taken out. Primary culture of the isolated basal forebrain and septal nuclei was performed. The cultured nerve cells were assigned into 3 groups: control group (nothing added), IFN-γ group(1×10^5 U/L interferon), IFN-γ+ IFN-γ antibody group (1 ×10^5 U/L IFN-γ + IFN-γ antibody). The specific marker enzyme (choline acetyl transferase) of cholinergic neuron was stained with immunohistochemical method. Choline acetyl transferase positive cells were counted, and ^14C-acetyl CoA was used as substrate to detect the activity of choline acetyl transferase, so as to reflect the differentiational effect of IFN-γ on cholinergic neuron in basal forebrain and septal nuclei. Flow cytometry was used to analyze cell circle and detect the proliferation of nerve cells. Nerve cells were marked with MAP2 and counted to evaluate the neuronal proliferation in basal forebrain and septal nuclei. MAIN OUTCOME MEASURES: Effect of interferon-γ on the number and activity of choline acetyl transferase-positive ceils in basal forebrain and septal nuclei as well as the effect on neuronal proliferation. RESULTS : ① Nerve cells in the basal forebrain and septal nuclei of IFN-γ group grew well compared with control group.②The differentiation of cholinergic neurons: The number and activity of choline acetyl transferase positive cells in IFN-γ group were significantly higher than those in the control group [(49.30 ±4.92) /100 cells vs (7.50±1.58) /100 cells; (2 049.00±12.30) min^-1 vs (1 227.30±12.59) min^-1, p 〈 0.01], while there was no significant difference in the number and activity of choline acetyl transferase positive cells between IFN-γ + IFN-γ antibody group and control group(P 〉 0.05). ③The proliferation of cholinergic neurons: Cell percentage was 17.2% and 19.8% at S-stage, 6.2% and 6.1% at G2+M stage in the control group and IFN-γ group respectively, without significant difference (P 〉 0.05). CONCLUSION : IFN-γ does not promote the neuronal proliferation in basal forebrain and septal nuclei, and the increased expression of cholinergic neurons is not resulted by the increase in the number of neurons, but its differentiation. 展开更多
关键词 Influence of interferon-gamma on the differentiation of cholinergic neurons in rat embryonic basal forebrain and septal nuclei IFN
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Profiles of interferon-gamma and interleukin-2 in patients after allogeneic hematopoietic stem cell transplantation
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作者 Malwina Rybicka-Ramos Mirosław Markiewicz +4 位作者 Aleksandra Suszka-Świtek Ryszard Wiaderkiewicz Sylwia Mizia Monika Dzierżak-Mietła Krzysztof Białas 《World Journal of Biological Chemistry》 2022年第4期72-82,共11页
BACKGROUND Allogeneic hematopoietic stem cell transplantation(allo-HSCT)may be related to the occurrence of complications,including graft-versus-host disease(GvHD)and infections.The pathogenesis of acute GvHD is conne... BACKGROUND Allogeneic hematopoietic stem cell transplantation(allo-HSCT)may be related to the occurrence of complications,including graft-versus-host disease(GvHD)and infections.The pathogenesis of acute GvHD is connected with T lymphocytes,which identify alloantigens on host's antigen-presenting cells,activate production of interferon-gamma(IFN-gamma)and interleukin-2(IL-2),and act on the immune effector cells and damage tissues and organs.AIM The aim of the study was to investigate and distinguish serum concentration profiles of IFN-gamma and IL-2 within a 30-d period after allo-HSCT.METHODS We enrolled 62 patients,i.e.,30(48%)male and 32(52%)female subjects[median age 49.5(19-68)years],after allo-HSCT from siblings(n=12)or unrelated donors(n=50)due to acute myeloid leukemia with myeloablative conditioning(n=26;42%)and with non-myeloablative conditioning(n=36;58%).All patients were given standard immunosuppressive therapy with cyclosporin-A and methotrexate and pre-transplant antithymocyte globulin in the unrelated setting.Blood samples were collected pre-transplant before and after(on day-1)the conditioning therapy and on days+2,+4,+6,+10,+20,and+30 after allo-HSCT.Serum levels of IL-2 and IFNgamma were determined using ELISA.RESULTS Patients were divided into four groups depending on the presence of acute GvHD and clinical manifestations of infection.Group I included patients with neither acute GvHD nor infections[n=15(24%)],group II consisted of patients with infections without acute GvHD[n=17(27%)],group III was comprised of patients with acute GvHD without infections[n=9(15%)],and group IV included patients with both acute GvHD and infections[n=21(34%)].IFN-gamma concentrations were higher in Group II than in other groups on days+20(P=0.014)and+30(P=0.008).Post-hoc tests showed lower concentrations of IFN-gamma on day+30 in groups I(P=0.039)and IV(P=0.017)compared to group II.The levels of IL-2 were mostly undetectable.CONCLUSION Serum levels of IFN-gamma following allo-HSCT progressively escalate.High serum levels of IFN-gamma are related to infectious complications rather than acute GvHD.Serum concentrations of IL-2 in most patients are undetectable. 展开更多
关键词 INTERLEUKIN-2 interferon-gamma Cytokine profiles Acute myeloid leukemia Allogeneic hematopoietic stem cell transplantation Acute graft-versus-host disease
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慢加急性乙型肝炎肝衰竭患者细菌感染病原菌分布及血清PCT、IFN-γ和IL-6水平变化分析 被引量:1
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作者 杨晶 陈美玲 +3 位作者 张丽秀 颜鲁伟 白正强 贺锐 《实用肝脏病杂志》 CAS 2024年第1期64-67,共4页
目的调查慢加急性乙型肝炎肝衰竭(HBV-ACLF)患者细菌感染病原菌分布特征,分析血清降钙素原(PCT)、干扰素-γ(IFN-γ)和白细胞介素-6(IL-6)水平预测细菌感染的效能。方法2019年12月~2023年1月我院收治的HBV-ACLF患者86例,常规分离和鉴定... 目的调查慢加急性乙型肝炎肝衰竭(HBV-ACLF)患者细菌感染病原菌分布特征,分析血清降钙素原(PCT)、干扰素-γ(IFN-γ)和白细胞介素-6(IL-6)水平预测细菌感染的效能。方法2019年12月~2023年1月我院收治的HBV-ACLF患者86例,常规分离和鉴定菌种,采用电化学发光免疫法检测血清PCT水平,采用ELISA法检测血清IFN-γ和IL-6水平,应用受试者工作特征(ROC)曲线评估血清指标联合预测HBV-ACLF患者发生细菌感染的效能。结果本组发生细菌感染者37例,未发生明确感染者49例;在37例HBV-ACLF并发细菌感染患者中,共检出68株感染病原菌,其中革兰氏阴性菌41株(60.3%),革兰氏阳性菌27株(39.7%);感染组血清PCT、IFN-γ和IL-6水平分别为(10.9±3.1)μg/L、(46.5±1.9)pg/mL和(16.9±1.6)pg/mL,均显著高于未感染组【分别为(0.9±0.1)μg/L、(20.1±2.4)pg/mL和(4.8±0.9)pg/mL,P<0.05】,28 d和90 d病死率分别为67.6%和75.7%,均显著高于未感染组(分别为8.2%和12.2%,P<0.05);经ROC分析显示,分别以PCT>3.3μg/L、IFN-γ>45.5 pg/mL和IL-6>15.4pg/mL为截断点,其联合预测HBV-ACLF患者并发细菌感染的曲线下面积(AUC)为0.874,诊断的灵敏度为93.6%,特异度为84.1%。结论HBV-ACLF患者细菌感染的病原菌分布具有一定的特征性,以革兰氏阴性菌感染为主,除检测血清PCT水平外,监测血清IFN-γ和IL-6水平可能有助于早期发现细菌感染而给予预防性处理,或能提供生存率。 展开更多
关键词 慢加急性乙型肝炎肝衰竭 细菌感染 降钙素原、干扰素-γ 白细胞介素-6 诊断
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TB-DNA、IGRAs、TB-Ab在肺结核中的诊断价值 被引量:1
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作者 林华 刘相玉 +1 位作者 陈展飞 俞柳敏 《分子诊断与治疗杂志》 2024年第5期917-920,925,共5页
目的探究结核分枝杆菌核酸(TB-DNA)、γ-干扰素释放试验(IGRAs)和结核分歧杆菌抗体(TB-Ab)检测在肺结核中的诊断价值。方法收集2022年6月至2023年1月莆田学院附属医院收治的154例疑似肺结核患者,所有患者均接受TB-DNA、IGRAs和TB-Ab检测... 目的探究结核分枝杆菌核酸(TB-DNA)、γ-干扰素释放试验(IGRAs)和结核分歧杆菌抗体(TB-Ab)检测在肺结核中的诊断价值。方法收集2022年6月至2023年1月莆田学院附属医院收治的154例疑似肺结核患者,所有患者均接受TB-DNA、IGRAs和TB-Ab检测,评价不同检测方法的检测阳性率、诊断肺结核的灵敏度、特异度、阳性预测值、阴性预测值及诊断准确率;采用受试者工作特征曲线(ROC)评估不同检测方法对肺结核的诊断效能。结果154例疑似肺结核患者中,107例确诊为肺结核(肺结核组),47例确诊为非肺结核的其他肺部疾病(对照组)。肺结核组TB-DNA、IGRAs和TB-Ab阳性率均高于对照组,差异有统计学意义(P<0.05)。TB-DNA、IGRAs检测诊断肺结核的灵敏度和诊断准确率均高于TB-Ab检测,差异有统计学意义(P<0.05),TB-DNA检测诊断肺结核的阴性预测值高于TB-Ab检测,差异有统计学意义(P<0.05)。ROC曲线分析结果显示,TB-DNA诊断肺结核的AUC为0.851(明显大于IGRAs诊断的0.770)、TB-Ab诊断的0.770,IGRAs诊断的AUC明显大于TB-Ab,差异均有统计学意义(P<0.05)。IGRAs+TB-DNA联合诊断的灵敏度、诊断准确率明显高于IGRAs单独检测(P<0.05);IGRAs+TB-Ab联合诊断的灵敏度明显高于IGRAs、TB-Ab单独检测,诊断准确率明显高于TB-Ab单独检测(P<0.05);TB-DNA+TB-Ab联合诊断的灵敏度、阴性预测值、诊断准确率明显高于TB-Ab单独检测(P<0.05)。TB-DNA、IGRAs、TB-Ab两两联合检测和三者联合检测诊断肺结核的灵敏度、特异度、阳性预测值、阴性预测值及诊断准确率比较,差异均无统计学意义(P>0.05)。结论相比TB-Ab和IGRAs检测,TB-DNA检测对肺结核的诊断价值更高;TB-DNA、IGRAs、TB-Ab两两联合检测对肺结核的诊断效能高于单一指标检测。 展开更多
关键词 肺结核 结核分枝杆菌核酸 Γ-干扰素释放试验 结核分歧杆菌抗体
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藏獒IFN-γ基因在毕赤酵母中的表达与抗病毒活性分析
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作者 宋世斌 何小兵 +1 位作者 景志忠 陈国华 《中兽医医药杂志》 CAS 2024年第5期1-6,共6页
采用毕赤酵母表达系统表达藏獒γ-干扰素(Tibetan mastiff interferon gamma,TmIFN-γ)并分析其生物活性,为抗病毒生物制品的研发与临床应用奠定基础。将构建的TmIFN-γ的真核表达质粒pPIC9k-TmIFN-γ转化至毕赤酵母GS115细胞,用不同浓... 采用毕赤酵母表达系统表达藏獒γ-干扰素(Tibetan mastiff interferon gamma,TmIFN-γ)并分析其生物活性,为抗病毒生物制品的研发与临床应用奠定基础。将构建的TmIFN-γ的真核表达质粒pPIC9k-TmIFN-γ转化至毕赤酵母GS115细胞,用不同浓度的G418筛选得到多拷贝重组菌株;利用甲醇进行诱导表达,以镍层析柱纯化目的蛋白,对表达产物进行SDS-PAGE和Western blotting鉴定;通过CCK-8试验检测重组TmIFN-γ蛋白的细胞毒性作用,利用VSV-MDBK系统检测其抗病毒生物活性。结果显示,成功筛选得到高拷贝pPIC9k-TmIFN-γ重组转化毕赤酵母菌株,利用甲醇诱导可获得TmIFN-γ重组蛋白,该蛋白对细胞无毒性,具有显著抗病毒活性,其抗病毒生物效价为1.727×10~5IU/mL。本研究获得了具有抗病毒活性的TmIFN-γ,有助于进一步探索TmIFN-γ的功能和开发新型基因工程抗病毒药物。 展开更多
关键词 藏獒IFN-γ 酵母表达 抗病毒活性
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肺结核患者血清IP-10、SOCS1及CA125表达意义及其与引发支气管狭窄的相关性分析
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作者 赵娟 刘薇 +2 位作者 张珣 赵虹 张静 《临床和实验医学杂志》 2024年第5期465-469,共5页
目的分析肺结核患者血清γ干扰素诱导蛋白10(IP-10)、细胞因子信号转导抑制物1(SOCS1)及糖类抗原125(CA125)表达意义及其与引发支气管狭窄的相关性。方法回顾性选择2021年1月至2023年1月河北省胸科医院收治的116例肺结核患者作为观察组... 目的分析肺结核患者血清γ干扰素诱导蛋白10(IP-10)、细胞因子信号转导抑制物1(SOCS1)及糖类抗原125(CA125)表达意义及其与引发支气管狭窄的相关性。方法回顾性选择2021年1月至2023年1月河北省胸科医院收治的116例肺结核患者作为观察组,同期116名健康体检者作为对照组。根据观察组患者胸部影像学检查结果,分为重度组(n=26)和轻中度组(n=90);通过纤维支气管镜检查及活检,判断患者是否存在支气管狭窄,分为支气管狭窄组(n=42)与单纯肺结核组(n=74)。检测所有入选者血清IP-10、SOCS1及CA125水平,比较血清IP-10、SOCS1及CA125在对照组与观察组、不同严重程度的肺结核患者中的差异性;比较支气管狭窄组与单纯肺结核组第1秒用力呼气量(FEV1)、用力肺活量(FVC)、最大呼气峰流速(PEF);分析血清IP-10、SOCS1及CA125与肺结核患者肺功能相关指标及其并发支气管狭窄的相关性。采用受试者工作特征(ROC)曲线分析血清IP-10、SOCS1及CA125水平预测肺结核患者发生支气管狭窄的效能。结果观察组血清IP-10、CA125水平分别为(95.84±12.58)ng/L、(1.89±0.86)U/mL,均高于对照组[(71.25±5.63)ng/L、(0.74±0.23)U/mL],SOCS1水平为(165.32±7.95)μg/L,低于对照组[(252.54±24.71)μg/L],差异均有统计学意义(P<0.05)。重度组肺结核患者血清IP-10、CA125水平分别为(106.74±15.01)ng/L、(2.67±1.12)U/mL,均高于轻中度组[(89.72±8.16)ng/L、(1.45±0.60)U/mL],SOCS1水平为(154.12±6.07)μg/L,低于轻中度组[(200.75±15.83)μg/L],差异均有统计学意义(P<0.05)。支气管狭窄组FEV1、FVC、PEF均小于单纯肺结核组,差异均有统计学意义(P<0.05)。经Pearson相关性分析,肺结核患者FEV1、FVC、PEF与血清IP-10、CA125水平呈正相关(P<0.05),与SOCS1水平呈负相关(P<0.05)。经ROC曲线分析,血清IP-10、SOCS1联合CA125预测肺结核患者发生支气管狭窄的敏感度为89.12%,特异度为48.63%,曲线下面积为0.924。结论肺结核患者血清IP-10、CA125水平明显升高,SOCS1水平降低,与病情严重程度相关,其联合预测支气管狭窄具有较好的效能。 展开更多
关键词 肺结核 γ干扰素诱导蛋白10 细胞因子信号转导抑制物1 糖类抗原125 支气管狭窄
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Early screening to identify and diagnose primary nasal tuberculosis in patients with tumor necrosis factor inhibitors
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作者 Dan-Xiang Shen Yu-Wei Wang +3 位作者 Zhi-Min Lin Di Jin Zhen-Hua Ying Chen Li 《World Journal of Clinical Cases》 SCIE 2024年第33期6604-6607,共4页
In this editorial,we comment on the article by Liu et al.Based on our analysis of a case report,we consider that early screening and recognition of primary nasal tuberculosis are crucial for patients undergoing treatm... In this editorial,we comment on the article by Liu et al.Based on our analysis of a case report,we consider that early screening and recognition of primary nasal tuberculosis are crucial for patients undergoing treatment with tumor necrosis factor inhibitor(TNFi).While TNFi therapy increases the risk of reactivating latent tuberculosis,primary nasal tuberculosis remains rare due to the protective mechanisms of the nasal mucosa.Risk factors for primary nasal tuberculosis include minimally invasive nasal surgery,diabetes,and human immunodefi ciency virus.Patients with early symptoms such as nasal congestion,rhinorrhea,altered olfaction,epistaxis,or ulceration,and unresponsive to conventional antibiotics and antihistamines should undergo early rhinoscopy,possibly followed by repeated tissue biopsies and acid-fast bacilli culture when necessary.When diagnosis is challenging,it is essential to consider local tuberculosis epidemiology and the efficacy of diagnostic antituberculosis treatment.The preferred method for tuberculosis screening is the Interferon Gamma Release Assay,with a general recommendation for screening at 3 and 6 months after initial treatment and then every six months.However,the optimal frequency is not yet consensus-driven and may be increased in economically viable settings. 展开更多
关键词 Tumor necrosis factor inhibitor interferon-gamma release assay Primary nasal tuberculosis Rhinoscopy Diabetes mellitus
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Tuberculosis in kidney transplant candidates and recipients
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作者 Pallavi Prasad Sourabh Sharma +2 位作者 Subashri Mohanasundaram Anupam Agarwal Himanshu Verma 《World Journal of Transplantation》 2024年第3期59-69,共11页
Tuberculosis(TB)is the leading cause of infectious mortality and morbidity in the world,second only to coronavirus disease 2019.Patients with chronic kidney disease and kidney transplant recipients are at a higher ris... Tuberculosis(TB)is the leading cause of infectious mortality and morbidity in the world,second only to coronavirus disease 2019.Patients with chronic kidney disease and kidney transplant recipients are at a higher risk of developing TB than the general population.Active TB is difficult to diagnose in this population due to close mimics.All transplant candidates should be screened for latent TB infection and given TB prophylaxis.Patients who develop active TB pre-or post-trans-plantation should receive multidrug combination therapy of antitubercular therapy for the recommended duration with optimal dose modification as per glomerular filtration rate. 展开更多
关键词 TUBERCULOSIS Latent Antitubercular therapy Kidney transplantation Donor interferon-gamma release assays TUBERCULIN RIFAMPICIN ISONIAZID
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消瘿散结汤联合左甲状腺素钠治疗桥本氏甲状腺炎合并甲状腺功能减退床疗效分析
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作者 金哲 江红 《实用中医内科杂志》 2024年第9期94-97,共4页
目的探讨消瘿散结汤联合左甲状腺素钠片治疗桥本氏甲状腺炎(hashimoto's thyroiditis,HT)合并甲状腺功能减退患者的临床疗效。方法选择2022年1月—2022年12月辽宁中医药大学附属第二医院收治的80例HT合并甲状腺功能减退患者,按照随... 目的探讨消瘿散结汤联合左甲状腺素钠片治疗桥本氏甲状腺炎(hashimoto's thyroiditis,HT)合并甲状腺功能减退患者的临床疗效。方法选择2022年1月—2022年12月辽宁中医药大学附属第二医院收治的80例HT合并甲状腺功能减退患者,按照随机数字表法为对照组和观察组各40例。对照组予以左甲状腺素钠治疗;观察组在对照组基础上加用消瘿散结汤口服治疗。观察两组临床疗效、中医证候积分变、血清游离三碘甲腺原氨酸(FT3)、游离甲状腺素(FT4)、促甲状腺激素(TSH)、抗甲状腺球蛋白抗体(TGAb)、抗甲状腺过氧化物酶抗体(TPOAb)、血清γ干扰素(IFN-γ)、白细胞介素-2(IL-2)、白细胞介素-4(IL-4)、白细胞介素-10(IL-10)等。结果治疗后,观察组总有效率高于对照组(P<0.05)。两组TGAb、TPOAb抗体滴度均降低,观察组低于对照组(P<0.05);两组中医证候总积分均降低,观察组低于对照组(P<0.05);两组IFN-γ、IL-2水平均降低(P<0.05),观察组低于对照组(P<0.05)。结论消瘿散结汤联合左甲状腺素钠片治疗HT合并甲状腺功能减退有效,且可在一定程度上降低TGAb、TPOAb及IL-2、IL-4、IL-10水平,改善甲状腺功能及临床症状,提升临床治疗有效率,值得推广。 展开更多
关键词 消瘿散结汤 左甲状腺素钠片 桥本氏甲状腺炎 甲状腺功能减退 血清γ干扰素 白细胞介素
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