Parameterization Transfer for a Planar Computational Domain in Isogeometric Analysis

In this paper,we propose a parameterization transfer algorithm for planar domains bounded by B-spline curves,where the shapes of the planar domains are similar.The domain geometries are considered to be similar if their simplified skeletons have the same structures.One domain we call source domain,and it is parameterized using multi-patch B-spline surfaces.The resulting parameterization is C1 continuous in the regular region and G1 continuous around singular points regardless of whether the parameterization of the source domain is C1/G1 continuous or not.In this algorithm,boundary control points of the source domain are extracted from its parameterization as sequential points,and we establish a correspondence between sequential boundary control points of the source domain and the target boundary through discrete sampling and fitting.Transfer of the parametrization satisfies C1/G1 continuity under discrete harmonic mapping with continuous constraints.The new algorithm has a lower calculation cost than a decomposition-based parameterization with a high-quality parameterization result.We demonstrate that the result of the parameterization transfer in this paper can be applied in isogeometric analysis.Moreover,because of the consistency of the parameterization for the two models,this method can be applied in many other geometry processing algorithms,such as morphing and deformation.

Performance Analysis of the Packet-Based PNT Service in NGSO Broadband Satellite Communication Systems

Providing alternative PNT service to GNSS-challenged users will be an important function of next-generation NGSO broadband satellite communication systems.Herein,a packet-based PNT service architecture in NGSO broadband systems is proposed in which a primary satellite and selected assistant satellites work together to provide PNT service to requesting users.Its positioning performance bounds are mathematically formulated by rigorously analyzing the bounds constrained by different waveforms.Simulations are conducted on different configurations of Walker Delta MEO constellations and Walker Star LEO constellations for corroboration,revealing the following:(1)Both MEO and LEO constellations achieve sub-meter-level positioning precision given enough satellites.(2)Compared to the GNSS Doppler-based velocity estimation method,the position advance based velocity estimation algorithm is more precise and applicable to the PNT service in NGSO broadband systems.(3)To provide PNT service to users in GNSS-challenged environments,the primary and each assistant satellite need only∼0.1‰of the time of one downlink beam.

Towards Fully Secure 5G Ultra-Low Latency Communications: A Cost-Security Functions Analysis

Future components to enhance the basic,native security of 5G networks are either complex mechanisms whose impact in the requiring 5G communications are not considered,or lightweight solutions adapted to ultrareliable low-latency communications(URLLC)but whose security properties remain under discussion.Although different 5G network slices may have different requirements,in general,both visions seem to fall short at provisioning secure URLLC in the future.In this work we address this challenge,by introducing cost-security functions as a method to evaluate the performance and adequacy of most developed and employed non-native enhanced security mechanisms in 5G networks.We categorize those new security components into different groups according to their purpose and deployment scope.We propose to analyze them in the context of existing 5G architectures using two different approaches.First,using model checking techniques,we will evaluate the probability of an attacker to be successful against each security solution.Second,using analytical models,we will analyze the impact of these security mechanisms in terms of delay,throughput consumption,and reliability.Finally,we will combine both approaches using stochastic cost-security functions and the PRISM model checker to create a global picture.Our results are first evidence of how a 5G network that covers and strengthened all security areas through enhanced,dedicated non-native mechanisms could only guarantee secure URLLC with a probability of∼55%.

Association of neuroelectrophysiology and analysis of cerebrospinal fluid immunoglobulin with pathogenetic conditions of patients with Guillain-Barre syndrome

BACKGROUND： Guillain-Barre syndrome （GBS） is an autoimmune disease which is characterized by demyelination of peripheral nerve and nerve root, and inflammatory reaction of lymphocyte and macrophage. Neuroelectrophysiological examination and cerebrospinal fluid （CSF） analysis are of significance for its diagnosis. OBJECTIVE： To study the association of neuroelectrophysiology and cerebrospinal fluid immunoglobulin （CSF-lg） with pathogenetic conditions of patients with GBS. DESIGN： Case control study SETTING： Department of Neurology, Shenzhen Municipal Shekou Group Hospital; Department of Neuroelectrophysiology, People＇s Hospital of Guangdong Province. PARTICIPANTS： A total of 32 GBS patients including 18 males and 14 females who aged from 17 to 72 years were selected as experimental group from the Department of Neurology, People＇s Hospital of Guang- dong Province from January 2004 to December 2005. All cases conformed with GBS diagnostic criteria established by Asbury in 1990 and they were divided into three types according to neurological criteria established by Chinese Neurology and Psychology Journal in 1993： mild, moderate and severe types. Another 30 patients with vascular headache were selected as control group from the same hospital including 14 males and 16 females who aged from 17 to 79 years. METHODS： ① Neuroelectrophysiological examination： Multiple-functional electromyography device provided by Nicolet Company, USA was used to measure nerve conduction velocity （NCV）, including motor nerve conduction velocity （MCV） and sensory nerve conduction velocity （SCV）; meanwhile, electromyologram （EMG）, somatosensory evoked potential （SEP） and electroencephalogram （EEG） were also measured. ② Detection of CSF-lg： Concentrations of IgG, IgA and IgM were measured with immunofixation electrophoresis. ③Follow-up： Among 32 GBS patients, 14 cases received follow-up after treatment and the longest fol- low-up time was 1 year after onset. Among them, 8 cases were reexaminined with neuroelectrophysiological and CSF examinations. MAIN OUTCOME MEASURES： Results of NCV, EMG, SEP and EEG; comparison of CSF-lg content; results of follow-up examinations. RESULTS： All 32 GBS cases and 30 patients with vascular headache were involved in the final analysis. ① Abnormal rate of neuroelectrophysiological test： 75% of NCV, 88% of F-wave, 53% of MCV, 25% of SEP, 47% of EMG and 31% of EEG. There were no significant differences among various types （P 〉 0.05）. ② Results of CSF-lg test： There were no significant differences among various types （P 〉 0.05）; however, abnormalities in experimental group was higher than those in control group （P 〈 0.01）. CONCLUSION ： Results of follow-up study suggest that improvement of clinical symptom is earlier than neuroelectrophysiological recovery; MCV and EMG recoveries are faster than that of NCV; the earlier the abnormality of EMG, the poorer the recovery. CSF4g recovers normally along improvement of clinical symptoms. It is of significance for neuroelectrophysiology and abnormality of CSF-Ig to determine degree of peripheral nerve demyelination and prognosis.

复发性口腔溃疡患者食物不耐受特异性IgG抗体检测特征分析

目的分析复发性口腔溃疡(ROU)患者食物不耐受特异性免疫球蛋白G(IgG)抗体检测特征结果,以期为ROU患者对食物不耐受的诊断和治疗提供依据。方法采用回顾性分析,选取2020年1月至2023年12月在郑州大学第一附属医院门诊就诊的1975例ROU患者为研究对象,收集患者的一般资料,统计患者食物不耐受特异性IgG抗体检测结果,比较不同年龄、不同性别患者食物不耐受的抗体检测结果差异。结果血清IgG阳性率最高的前5种食物分别是鸡蛋(47.34%)、牛奶(31.14%)、小麦(21.87%)、大豆(21.22%)、西红柿(10.38%),其中牛肉(0.46%)、猪肉(0.56%)、鸡肉(1.37%)、虾(1.82%)的血清IgG阳性率较低。女性受试者对鳕鱼、鸡蛋、牛奶3种食物的不耐受阳性率显著高于男性,差异有统计学意义(P<0.05)。不同年龄患者在鸡肉、鳕鱼、鸡蛋、蘑菇、牛奶、虾、大豆、小麦8种食物中的不耐受阳性率差异有统计学意义(P<0.05);未成年组对鸡蛋、牛奶、大豆、小麦4种食物的不耐受阳性率高于中青年组和老年组,对虾、蘑菇的不耐受阳性率低于中青年组和老年组,对鸡肉的不耐受阳性率显著高于中青年组,对鳕鱼的不耐受阳性率显著高于老年组,差异有统计学意义(P<0.05)。结论ROU患者发生食物不耐受的概率较高,食物不耐受与患者的性别和年龄有一定关系,及早对ROU患者进行食物血清特异性IgG抗体检测,可及时发现患者不耐受的食物以调整饮食,避免食源性的机体免疫反应。

Clinical characteristics and outcome of autoimmune pancreatitis based on serum immunoglobulin G4 level:A single-center,retrospective cohort study

BACKGROUND Autoimmune pancreatitis(AIP)has been linked with elevated immunoglobulin(Ig)G4 levels.The characteristics and outcomes of AIP based on serum markers have not been fully evaluated.AIM To compare clinical features,treatment efficacy,and outcome of AIP based on serum IgG4 levels and analyze predictors of relapse.METHODS A total of 213 patients with AIP were consecutively reviewed in our hospital from 2006 to 2021.According to the serum IgG4 level,all patients were divided into two groups,the abnormal group(n=148)with a high level of IgG4[>2×upper limit of normal(ULN)]and the normal group(n=65).The t-test or Mann-Whitney U test was used to compare continuous variables.Categorical parameters were compared by theχ^(2) test or Fisher’s exact test.Kaplan-Meier curves Zhou GZ et al.Clinical characteristics and outcome of AIP WJG https://www.wjgnet.com 5126 September 21,2023 Volume 29 Issue 35 and log-rank tests were established to assess the cumulative relapse rates.Univariate and multivariate analyses were used to investigate potential risk factors of AIP relapse.RESULTS Compared with the normal group,the abnormal group had a higher average male age(60.3±10.4 vs 56.5±12.9 years,P=0.047);higher level of serum total protein(72.5±7.9 g/L vs 67.2±7.5 g/L,P<0.001),IgG4(1420.5±1110.9 mg/dL vs 252.7±106.6 mg/dL,P<0.001),and IgE(635.6±958.1 IU/mL vs 231.7±352.5 IU/mL,P=0.002);and a lower level of serum complement C3(100.6±36.2 mg/dL vs 119.0±45.7 mg/dL,P=0.050).In addition,a lower number of cases with abnormal pancreatic duct and pancreatic atrophy(23.6%vs 37.9%,P=0.045;1.6%vs 8.6%,P=0.020,respectively)and a higher rate of relapse(17.6%vs 6.2%,P=0.030)were seen in the abnormal group.Multivariate analyses revealed that serum IgG4[(>2×ULN),hazard ratio(HR):3.583;95%confidence interval(CI):1.218–10.545;P=0.020]and IgA(>1×ULN;HR:5.908;95%CI:1.199–29.120;P=0.029)and age>55 years(HR:2.383;95%CI:1.056–5.378;P=0.036)were independent risk factors of relapse.CONCLUSION AIP patients with high IgG4 levels have clinical features including a more active immune system and higher relapse rate.Several factors,such as IgG4 and IgA,are associated with relapse.

Analysis of Gettysburg Address

In discourse analysis,different analyzer uses different ways to analyze discourse.This essay analyzes Gettysburg Address theoretically and practically based on Function Grammar proposed by M.A.K.Halliday.It aims to explore rather than literal meaning of the Address from different language structures by adopting some theories in Functional Grammar.

Clinical characteristics and outcomes of autoimmune pancreatitis based on serum immunoglobulin G4 levels:A single-center,retrospective cohort study

Autoimmune pancreatitis(AIP)is a complex,poorly understood disease gaining increasing attention."Clinical Characteristics and Outcome of AIP Based on Serum IgG4 levels,"investigated AIP with a focus on serum immunoglobulin(Ig)G4 levels.The 213 patients with AIP were classified according to serum IgG4 levels:Abnormal(elevated)and normal.Patients with higher IgG4 levels exhibited a more active immune system and increased relapse rates.Beyond IgG4,the IgA levels and age independently contributed to relapse risk,guiding risk assessment and tailored treatments for better outcomes.However,limitations persist,such as no IgA correlation with IgG4 levels,absent data on autoantibodypositive AIP cases critical for Asian diagnostic criteria,and unexplored relapse rates in high serum IgG AIP by subtype.Genetic factors and family histories were not addressed.As the understanding and referral of seronegative AIPs increase,there's a growing need for commercially available,highly sensitive,and specific autoantibodies to aid in diagnosing individuals with low or absent serum IgG4 levels.

IgG4相关肾病患者血清IgG4表达水平与肾功能、微炎症状态的相关性分析

目的分析IgG4相关肾病患者血清IgG4水平与肾功能、微炎症状态的相关性。方法选取内蒙古医科大学附属医院2018年1月至2022年8月收治的60例IgG4相关肾病患者记为研究组,另基于倾向性匹配法按照1∶1的比例选取60名健康志愿者记为对照组。2组受试者均检测血清IgG4水平、肾功能指标[血肌酐(serum creatinine,Scr)、血尿素氮(blood urea nitrogen,BUN)、估算肾小球滤过率(estimated glomerular filtration rate,eGFR)、24 h尿蛋白定量(24 h urinary total protein quantification,24 hUTP)]和微炎症状态[白细胞介素(interleukin,IL)6、超敏C反应蛋白(high-sensitivity C-reactive protein,hs-CRP)、肿瘤坏死因子α(tumor necrosis factor-α,TNF-α)]。比较2组受试者血清IgG4、肾功能及微炎症状态指标;Pearson法分析研究组中患者血清IgG4水平与肾功能、微炎症状态的相关性;Logistic回归分析确定患者肾功能不全的危险因素。结果研究组血清IgG4[(67.75±18.63)mg/L比(6.54±1.19)mg/L]、Scr[(182.75±32.69)μmol/L比(75.40±15.61)μmol/L]、BUN[(10.15±2.90)mmol/L比(5.28±1.04)mmol/L]、IL-6[(5.18±1.04)ng/L比(0.40±0.05)ng/L]、hs-CRP[(24.69±5.06)mg/L比(4.58±0.92)mg/L]、TNF-α[(6.85±1.79)μg/L比(1.18±0.21)μg/L]和24 hUTP[(182.75±32.69)mg比(89.75±12.36)mg]水平均高于对照组(P<0.05),eGFR低于对照组[(90.10±9.87)mL·min^(-1)·(1.73 m^(2))-1比(104.36±20.15)mL·min^(-1)·(1.73 m^(2))^(-1),P<0.05];研究组血清IgG4水平与Scr、BUN、24 hUTP、IL-6、hs-CRP、TNF-α均呈正相关(r=0.586、0.543、0.575、0.602、0.596、0.574,P<0.05),与eGFR呈负相关(r=-0.602,P=0.001);研究组肾功能不全发生率为78.33%,病程、合并高血压、血清IgG4水平均是肾功能不全发生的影响因素(OR=3.190、2.401、3.466,P<0.05)。结论IgG4相关肾病患者血清IgG4升高,且与肾功能、微炎症状态均有关,病程、合并高血压、血清IgG4水平均是肾功能不全发生的影响因素。

Power Allocation and Performance Analysis of the Collaborative NOMA Assisted Relaying Systems in 5G

Serving multiple cell-edge mobile terminals poses multifaceted challenges due to the increased transmission power and interferences, which could be overcome by relay communications. With the recent advancement of 5G technologies, non-orthogonal multiple access(NOMA) has been used at relay node to transmit multiple messages simultaneously to multiple cell-edge users. In this paper, a Collaborative NOMA Assisted Relaying(CNAR) system for 5G is proposed by enabling the collaboration of source-relay(S-R) and relay-destination(R-D) NOMA links. The relay node of the CNAR decodes the message for itself from S-R NOMA signal and transmits the remaining messages to the multiple cell-edge users in R-D link. A simplified-CNAR(S-CNAR) system is then developed to reduce the relay complexity. The outage probabilities for both systems are analyzed by considering outage behaviors in S-R and R-D links separately. To guarantee the data rate, the optimal power allocation among NOMA users is achieved by minimizing the outage probability. The ergodic sum capacity in high SNR regime is also approximated. Our mathematical analysis and simulation results show that CNAR system outperforms existing transmission strategies and S-CNAR reaches similar performance with much lower complexity.

A Nested Case-Control Study to Explore the Association between Immunoglobulin G N-glycans and Ischemic Stroke

Objective This study prospectively investigates the association between immunoglobulin G(IgG)N-glycan traits and ischemic stroke(IS) risk.Methods A nested case-control study was conducted in the China suboptimal health cohort study,which recruited 4,313 individuals in 2013–2014. Cases were identified as patients diagnosed with IS, and controls were 1:1 matched by age and sex with cases. Ig G N-glycans in baseline plasma samples were analyzed.Results A total of 99 IS cases and 99 controls were included, and 24 directly measured glycan peaks(GPs) were separated from Ig G N-glycans. In directly measured GPs, GP4, GP9, GP21, GP22, GP23, and GP24 were associated with the risk of IS in men after adjusting for age, waist and hip circumference,obesity, diabetes, hypertension, and dyslipidemia. Derived glycan traits representing decreased galactosylation and sialylation were associated with IS in men(FBG2S2/(FBG2 + FBG2S1 + FBG2S2): odds ratio(OR) = 0.92, 95% confidence interval(CI): 0.87–0.97;G1n: OR = 0.74, 95% CI: 0.63–0.87;G0n: OR =1.12, 95% CI: 1.03–1.22). However, these associations were not found among women.Conclusion This study validated that altered Ig G N-glycan traits were associated with incident IS in men, suggesting that sex discrepancies might exist in these associations.

山东单县地区食物特异性IgG抗体检测在临床中的应用

目的分析山东单县地区疑似慢性食物敏感患者/患儿血清中的食物特异性免疫球蛋白G(IgG)抗体水平,为患者/患儿剔除饮食中引起疾病的食物提供依据。方法选取疑似慢性食物敏感患者161例,按年龄分为婴幼儿组(45例,≤3岁,平均年龄1.43岁)、儿童组(28例,4~14岁,平均年龄8.29岁)和青少年及成人组(88例,>14岁,平均年龄46.23岁);另选取疑似慢性食物敏感患儿60例,按年龄分为婴儿组(50例,≤12个月,平均年龄5.94个月)和幼儿组(10例,>12个月,平均年龄19.9个月)。采用蛋白芯片法检测161例患者血清20种食物特异性IgG抗体水平,以及检测60例患儿血清17种食物特异性IgG抗体水平。分析患者及患儿的食物特异性IgG抗体检测阳性率,并比较不同年龄组患者或患儿食物特异性IgG抗体阳性率。结果161例患者检测20种食物特异性IgG抗体中,有118例患者对1~18种不等的食物发生不良反应,总阳性率为73.29%,各种食物特异性IgG抗体中阳性率前6位从高到低依次为鸡蛋(62.11%)、牛奶(32.30%)、花生(12.42%)、小麦(8.70%)、西红柿(7.45%)、大豆(5.59%)。85例男性中,至少1种食物特异性IgG抗体检出阳性的有65例(76.47%);76例女性中,至少1种食物特异性IgG抗体检出阳性的有53例(69.74%),不同性别之间食物特异性IgG抗体总阳性率对比无统计学差异(P>0.05)。60例患儿检测的17种食物特异性IgG抗体中,有57例患儿对1~17种食物发生不良反应,总阳性率为95.00%。各种食物特异性IgG抗体中阳性率前6位高到低依次为β-乳球蛋白(83.33%)、牛奶(70.00%)、脱脂奶粉(63.33%)、白软干酪(61.67%)、羊奶(61.67%)、水解奶粉(61.67%)。31例男孩中,至少1种食物特异性IgG抗体检出阳性的有29例(93.55%);29例女孩中,至少1种食物特异性IgG抗体检出阳性的有28例(96.55%),不同性别之间食物特异性IgG抗体总阳性率对比无统计学差异(P>0.05)。进行20种食物特异性IgG抗体检测的161例患者中,总阳性率随着年龄的增长呈现逐步降低的趋势,婴幼儿组、儿童组的总阳性率均显著高于青少年及成人组,婴幼儿组的总阳性率显著高于儿童组(P<0.05);不同年龄组的牛奶、鸡蛋、小麦、西红柿特异性IgG抗体阳性率存在显著差异(P<0.05)。其中,婴幼儿组、儿童组和青少年及成人组的牛奶特异性IgG抗体阳性率组间两两比较存在显著差异(P<0.05),婴幼儿组的牛奶特异性IgG抗体阳性率最高,其次是儿童组,青少年及成人组最低。婴幼儿组、儿童组的鸡蛋、小麦特异性IgG抗体阳性率均显著高于青少年及成人组(P<0.05)。婴幼儿组的西红柿特异性IgG抗体阳性率高于儿童组和青少年及成人组(P<0.05)。不同年龄组的虾、螃蟹、鳕鱼、马铃薯、榛子、腰果、桃、菠萝、牛肉、鸡肉、猪肉、大麦、玉米、大豆、花生、蘑菇特异性IgG抗体阳性率对比不存在显著差异(P>0.05)。进行17种食物特异性IgG抗体检测的60例患儿中,婴儿组和幼儿组食物特异性IgG抗体总阳性率对比没有显著差异(P>0.05)。幼儿组的鸡蛋、鸡蛋白、鸡蛋黄、卵类粘蛋白特异性IgG抗体阳性率显著高于婴儿组(P<0.05);两组切达干酪、白软干酪、酪乳、酸奶、羊奶、牛奶、水牛牛奶、脱脂奶粉、煮过的牛奶、水解奶粉、α-乳清蛋白、β-乳球蛋白、酪蛋白特异性IgG抗体阳性率对比不存在显著差异(P>0.05)。但两组牛奶、羊奶、水牛牛奶、脱脂奶粉、水解奶粉、白软干酪、β-乳球蛋白、酪蛋白等与奶类相关的产品、组分中均存在较高的特异性IgG抗体阳性率。结论检测不同人群食物特异性IgG抗体有利于了解单县地区不同人群对不同食物的敏感情况,可及时发现饮食中引起敏感的食物,及时调整饮食,有利于身体健康。

Infrequent organ involvement in immunoglobulin G4-related prostate disease: A case report

BACKGROUND Immunoglobulin G4-related prostate disease(IgG4-RPD)characterized by a high count of IgG4-positive plasma cells has distinctive serological and radiological findings.Here we report a case of a patient who was successfully treated for IgG4-RPD,which manifested as frequent micturition,dysuric,and systemic lymphadenopathy.CASE SUMMARY The patient was a 33-year-old man who was referred to our hospital because of urinary tract symptoms that had persisted for 4 years.A physical examination revealed systemic lymphadenopathy and blood tests showed hyperglobulinemia with an IgG level of 18.90 g/L and an IgG4 level of 18.40 g/L.Computed tomography(CT)revealed bilateral lacrimal gland,right parotid gland and prostatic enlargement.Based on these findings,IgG4-RD was suspected,and further pathological examination and follow-up results showed expected results.Finally,the patient was diagnosed with IgG4-RPD based on clinical symptoms,pathological examination,therapeutic effects,and follow-up results.He received 50 mg oral prednisolone(the dose was gradually reduced and a low dose was used for long-term maintenance)in combination with cyclophosphamide 1.0 g via an intravenous drip for 6 mo.One year after the treatment was initiated,he was free of urinary or other complaints and his serum IgG4 level normalized.CONCLUSION In IgG4-RPD with severe urinary tract symptoms,radiological findings should be carefully examined.IgG4-RPD prognosis is good because the disease responds well to glucocorticoids.Furthermore,it is urgent for clinicians and pathologists to improve their understanding of IgG4-RPD.

EB病毒IgM、IgG及DNA检测在儿童呼吸道感染性疾病中的诊断研究

目的探析爱泼斯坦-巴尔病毒(EB病毒,EBV)免疫球蛋白(Ig)M、IgG及脱氧核糖核酸(DNA)检测在儿童呼吸道感染性疾病中的诊断价值。方法选取400例呼吸道感染性疾病患儿作为观察组,同时选取100例无呼吸道感染患儿作为对照组。对两组患儿EBV-IgM、EBV-IgG及EBV-DNA进行检测。比较观察组不同年龄段患儿EBV-IgM、EBV-IgG及EBV-DNA阳性率,两组EBV-IgM、EBV-IgG及EBV-DNA检测结果;分析各项指标的诊断价值。结果观察组不同年龄段患儿EBV-IgM、EBV-IgG阳性率比较,差异具有统计学意义(P<0.05);观察组不同年龄段患儿EBV-DNA阳性率比较无明显差异(P>0.05)。EBV-IgM检测中,观察组化学发光值(11.39±2.12)高于对照组的(9.54±1.35),阳性率50.50%(202/400)高于对照组的5.00%(5/100),差异有统计学意义(P<0.05);EBV-IgG检测中,观察组吸光度值(11.33±2.15)高于对照组的(9.03±1.06),阳性率58.00%(232/400)高于对照组的12.00%(12/100),差异有统计学意义(P<0.05);EBV-DNA检测中,观察组循环数Ct值(34.13±4.88)低于对照组的(43.75±11.62),阳性率57.00%(228/400)高于对照组的6.00%(6/100),差异均具有统计学意义(P<0.05)。EBV-DNA对呼吸道感染性疾病患儿的诊断价值最高[曲线下面积(AUC)=0.644],其次依次是EBV-IgM(AUC=0.618)、EBV-IgG(AUC=0.584),EBV-IgM对呼吸道感染性疾病患儿的诊断特异度最高,为96.12%。结论EBV-IgM、EBV-IgG、EBV-DNA检测在儿童呼吸道感染性疾病的诊断中具有重要的指导意义。

Unmet needs in biomarkers for autoimmune pancreatitis diagnosis

Autoimmune pancreatitis(AIP)is a rare chronic autoimmune disorder.The diagnosis of AIP mainly depends on histopathology,imaging and response to treatment.Serum immunoglobulin 4(IgG4)is used only as collateral evidence in diagnostic criteria for AIP because of its moderate sensitivity.Serum IgG4 levels are normal in 15%-37%of type 1 AIP and most of type 2 AIP patients.In these patients,the indeterminate imaging and histopathology may lead to the difficulty in definitive diagnosis of AIP.Therefore,discovery of new biomarkers is impor-tant for AIP diagnosis.Here,we provide some views on the progression and challenges in identifying novel serological biomarkers in AIP diagnosis.

Understanding autoimmune pancreatitis: Clinical features, management challenges, and association with malignancies

In this editorial we comment on the article by Jaber et al.Autoimmune pancreatitis(AIP)represents a distinct form of pancreatitis,categorized into AIP-1 and AIP-2,characterized by obstructive jaundice,lymphoplasmacytic infiltrate,and fibrosis.AIP-1,associated with elevated immunoglobulin G4(IgG4)levels,exhibits higher relapse rates,affecting older males,while AIP-2 is less common and linked to inflammatory bowel disease.AIP is considered a manifestation of IgG4-related systemic disease,sharing characteristic histological findings.Steroids are the primary treatment,with emerging biomarkers like interferon alpha and inter-leukin-33.AIP poses an increased risk of various malignancies,and the assoc-iation with pancreatic cancer is debated.Surgery is reserved for severe cases,necessitating careful evaluation due to diagnostic challenges.AIP patients may have concurrent PanINs but display favorable long-term outcomes compared to pancreatic cancer patients.Thorough diagnostic assessment,including biopsy and steroid response,is crucial for informed surgical decisions in AIP.

血清抗环瓜氨酸肽抗体、类风湿因子、免疫球蛋白G、补体C3、补体C4检测在类风湿关节炎诊断中的应用价值

目的:探讨血清抗环瓜氨酸肽(CCP)抗体、类风湿因子(RF)、免疫球蛋白G(IgG)、补体C3、补体C4检测在类风湿关节炎诊断中的应用价值。方法:选取2020年3月—2022年3月枝江市人民医院收治的类风湿关节炎患者126例作为观察组,另选取同期体检健康者126例作为对照组,根据类风湿关节炎疾病活动(DAS-28)评分将观察组分为缓解期组(n=72)与活动期组(n=54)。所有研究对象检测血清CCP抗体、RF、IgG、补体C3、补体C4水平。比较各组各项指标水平。结果:观察组血清CCP抗体、RF、IgG、补体C3、补体C4水平均高于对照组,差异有统计学意义(P<0.001)。活动期组血清CCP抗体、RF、IgG、补体C3、补体C4水平均高于缓解期组,差异有统计学意义(P<0.001)。结论:类风湿关节炎患者体内血清CCP抗体、RF、IgG、补体C3、补体C4均异常升高,并与类风湿关节炎病情活动度有关,可作为类风湿关节炎早期诊断及病情监测的重要指标。

Type one autoimmune pancreatitis based on clinical diagnosis: A case report

BACKGROUND Autoimmune pancreatitis(AIP)is a rare form of autoimmune-mediated pancrea-titis,which is easily misdiagnosed as pancreatic cancer and thus treated surgi-cally.We studied the diagnosis and treatment of a patient with type 1 AIP recent-ly admitted to our hospital,and reviewed the literature to provide a reference for clinical diagnosis of AIP.CASE SUMMARY The chief complaint was yellowing of the body,eyes and urine for 21 d.The pa-tient's clinical presentation was obstructive jaundice and imaging suggested pan-creatic swelling.It was difficult to distinguish between inflammation and tumor.Serum immunoglobulin G4(IgG4)was markedly elevated.IgG4 is an important serological marker for type 1 AIP.The patient was diagnosed with AIP,IgG4-related cholangitis,acute cholecystitis and hepatic impairment.After applying hormonal therapy,the patient's symptoms improved significantly.At the same time,imaging suggested that pancreatic swelling subsided,and liver function and other biochemical indicators decreased.The treatment was effective.CONCLUSION In patients with pancreatic swelling,the possibility of AIP should be considered.

No association of G-protein beta polypeptide 3 polymorphism with irritable bowel syndrome: Evidence from a meta-analysis

AIM:To clarify the associations between G-protein beta polypeptide 3(GNB3)C825T polymorphism and risk of the irritable bowel syndrome(IBS)by a meta-analysis.METHODS:We searched relevant studies in PubMed,EMBASE,CNKI,Google Scholar,Ovid and Cochrane library prior to October 2013.The strengths of the associations between GNB3 C825T polymorphism and IBS risk were estimated by odds ratios(ORs)with 95%confidence interval(CIs).RESULTS:We identified seven case-control studies with 1085 IBS cases and 1695 controls for the analysis.We found no significantly associations of GNB3 C825T polymorphism with IBS risk in the overall population(CC vs TT,OR=1.12,95%CI:0.86-1.45;CC+CT vs TT,OR=1.17,95%CI:0.92-1.49;TT+CT vs CC,OR=0.93,95%CI:0.80-1.08;C vs T,OR=1.08,95%CI:0.97-1.21).Subgroup analysis did not reveal significant associations either in Asian population or Caucasian population.The pooled results of four studies fail to show associations of GNB3 C825T polymorphism with subtypes of IBS(constipation-dominant type,diarrheadominant type and mixed type).CONCLUSION:The present study suggests no associations of GNB3 C825T polymorphism with IBS risk.

Estimate the Prevalence of Helicobacter pylori Infection among Diabetes & Non-Diabetes Mellitus Patients and Its Correlation with Malignant Gastritis Patients Attending in Lower Shabelle Region (Somalia)

Background: Several conducted studies have reported a higher and more frequent Helicobacter pylori infection rate in type 2 diabetes mellitus (T2DM). The aim of this study was to estimation the prevalence of H. pylori and its association between H. pylori infection and T2DM. Materials and Methods: A sectional-cross study was conducted based on 200 patients studded with socioeconomic characteristics through a questionnaire & H. pylori was diagnosed by serum anti-H. pylori immunoglobulin G (IgG) and IgA. Furthermore, patients were investigated for fasting blood glucose (FBG) levels, glycosylated hemoglobin (HbA1c), serum cholesterol, and other biochemistry parameters. Results: The findings showed The prevalence of Hp positive infection was significantly higher in the total sample was 134 with (67%). While 66 out of 200 patients with (33%) was H. pylori negative infection. of H. pylori. Further, the mean values were statistically significant for diabetes with H. pylori infection for IgG > 300 titer and IgA > 250 titer, regarding, HbA1C (7.52 ± 0.41) (P Conclusions: The current study revealed that H. pylori prevalence infections were significantly higher in diabetic patients studied compared to non-diabetic patients. Furthermore, T2DM patients infected with H. pylori positive reported a higher prevalence rate of symptoms than H. pylori negative.