Disentangling Tfr cells from Treg cells and Tfh cells: How to untie the Gordian knot

T follicular regulatory (Tfr) cells are a subpopulation of Treg cells that have adopted the T follicular helper cell program to localize to the B‐cell follicle. Because of the difficulties in generating mouse models in which Tfr cells are selectively affected, determining where and how Tfr cells regulate the germinal center response remains to be resolved. In this issue of the European Journal of Immunology, Dent and colleagues [Eur. J. Immunol. 2016. 46: 1152–1161] describe a simple, elegant mouse model to conditionally delete Tfr cells without impacting on the Treg‐ and Tfh‐cell populations. Their initial studies suggest that Tfr cells have a more complex role than previously thought, particularly with respect to the regulation of immunoglobulin isotype switching to IgA.     

涂阳肺结核病人发现程序的探讨

目的　探索高发现、操作简便、成本低的病人发现程序。方法 山东省2000年结核病流行病学抽样调查资料。结果 在1715例同时胸透和痰涂片检查的可疑肺结核症状者中,发现涂阳肺结核病人51例,其中胸透诊断正常者15例。结论 对可疑肺结核症状者必须全部查痰。     

BACTEC MGIT 960培养结合INNO-LIPA~(TM) RIF.TBDNA探针新技术快速诊断结核病

目的通过MGIT960培养系统结合国外最新的INNO -LIPATM RIF.TB(LIPA)DNA探针技术的应用 ,探讨其快速诊断结核病的可行性。方法应用BACTECMGIT960系统进行临床疑似结核病例标本的培养 ,筛选了70例结核分枝杆菌 ,35例非结核分枝杆菌 ,用LIPA探针技术诊断是否为结核分枝杆菌。结果用LIPADNA方法在70例结核分枝杆菌中获得阳性69例 ,占98.6 % ;35例非结核分枝杆菌均为阴性。与单纯消化纯化后涂片的82.9 % (58/70)的阳性率相比增加了15.7个百分点 ,两者在统计学上差异有显著性(P<0.05)。BactecMGIT960培养结合LIPADNA探针与传统诊断方法4～8周相比 ,整个过程只需6～37天 ,平均15天 (2周 )。结论LIPADNA探针是一种具有高度敏感性和特异性、能够简便、快速、准确地诊断结核病的新技术。同时还能鉴定rpoβ 基因位点的突变 ,诊断耐利福平 (RMP)性结核 ,有望适用于结核分枝杆菌耐RMP性结核的快速检测 ,进一步为结核病快速准确的治疗提供理论依据。     

Visible-light-induced one-pot synthesis of sulfonic esters via multicomponent reaction of arylazo sulfones and alcohols

Sulfonic ester is a chemical structure common to many organic molecules, including biologically active compounds. Herein, a visible-light-induced synthetic method to prepare aryl sulfonic ester from arylazo sulfones was developed. In the present study, a one-pot reaction was carried out using arylazo sulfones, DABSO (DABCO·(SO₂)₂), and alcohols in the presence of CuI as a coupling catalyst and HCl as an additive to yield sulfonic esters via multicomponent reaction. This synthetic method afforded a wide range of sulfonic esters with high yields under mild conditions.

Facile and efficient one-pot synthesis of sulfonic esters has been achieved via visible-light-induced multicomponent reaction of arylazo sulfones, and alcohols in the presence of DABSO, CuI, and HCI.     

Correction: Synthesis and characterizations of YZ-BDC:Eu3+,Tb3+ nanothermometers for luminescence-based temperature sensing

Correction for ‘Synthesis and characterizations of YZ-BDC:Eu³⁺,Tb³⁺ nanothermometers for luminescence-based temperature sensing’ by Lam Thi Kieu Giang et al., RSC Adv., 2022, 12, 13065–13073, https://doi.org/10.1039/D2RA01759H.

The authors regret the omission of a funding acknowledgement in the original article. This acknowledgement is given below.Karolina Trejgis is supported by the Foundation for Polish Science (FNP).The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.     

Clinical and genetic features of congenital bile acid synthesis defect with a novel mutation in AKR1D1 gene sequencing: Case reports

Rationale:Congenital bile acid synthesis defect (BASD) is a rare disease caused by mutations in the aldo-keto reductase 1D1 gene, which encodes the primary Δ4-3-oxosteroid 5β-reductase enzyme. Early disease diagnosis is critical for early treatment with bile acid replacement therapy, with an excellent chance for recovery. In contrast, protracted diagnosis and treatment may lead to poor outcomes, including decompensated hepatic cirrhosis, liver transplant, and even death.Patient concerns:Three clinical congenital bile acid synthesis defect cases in the Vietnamese population are herein reported. These pediatric patients presented with symptoms of prolonged postpartum jaundice and abnormal loose stool (mucus, lipids, and white). The clinical examinations showed hepatosplenomegaly. Urinalysis showed a very low fraction of primary bile acids and atypical 3-oxo-Δ4- bile acids in all three patients.Diagnoses:The patients were diagnosed with primary Δ4-3-oxosteroid 5β-reductase deficiency. Next-generation gene sequencing revealed two homozygous mutations in the aldo-keto reductase family 1 member D1 gene. The first is a documented variant, c.797G>A (p.Arg266Gln), and the second is a novel mutation at c.155T>C (p.Ile52Thr).Interventions:Immediately after diagnosis, patients were treated with oral chenodeoxycholate 5 mg/kg/d.Outcomes:The patients’ symptoms, signs, and primary bile acids levels improved significantly.Lessons:Clinicians should consider genetic disorders related to cholestasis for effective and life-saving treatment. A prompt genetic analysis by next-generation gene sequencing enables patients to access bile acid replacement therapy earlier, significantly improving short- and long-term outcomes.     

Evaluation of Rapid Neutralizing Antibody Detection Test against Rabies Virus in Human Sera

Rapid and easy determination of protective neutralization antibody (NAb) against rabies in the field is very important for an early and effective response to rabies in both animal and human health sectors. The rapid neutralizing antibody detection test (RAPINA), first developed in 2009 and then improved in 2012, is a quick test allowing detection of 0.5 IU/ml antibodies in human and animal sera or plasma. This study aimed to assess the RAPINA test by comparison with rapid focus fluorescence inhibition test (RFFIT), using 214 sera of vaccinated and unvaccinated professional dog butchers, laboratory workers and rabies patients in Vietnam. The sensitivity, specificity, false negative rate, false positive rate and concordance of the RAPINA test as compared to RFFIT were 100%, 98.34%, 0%, 1.66% and 98.6%, respectively. The positive predictive value and negative predictive value were 91.7% and 100%, respectively when RAPINA test was used. With its remarkable sensitivity, specificity and easy implementation, RAPINA test can be used for rapid determination of NAb in the field.