Since the outbreak of COVID-19,severe acute respiratory syndrome coronavirus 2 genome is still mutating,forming a variety of variants with strong transmission capacity,causing the spread of the epidemic worldwide,posi...Since the outbreak of COVID-19,severe acute respiratory syndrome coronavirus 2 genome is still mutating,forming a variety of variants with strong transmission capacity,causing the spread of the epidemic worldwide,posing a serious threat to people's physical and mental health,and posing a major challenge to global public health.Omicron remains the main variant in several outbreaks worldwide,accounting for about 99%of the global genetic sequence.Recently,the World Health Organization announced that the subvariant of Omicron BA.5 has been found in more than 100 countries and regions around the world,causing the global epidemic rebound.However,there are few studies on the subvariant BA.5.This article reviews the latest research progress in epidemiology,infectivity,pathogenicity,vaccine and monoclonal antibody protection against Omicron subvariant BA.5,in order to provide reference for scientific prevention and control of Omicron subvariant BA.5.展开更多
Background and aims:Clinical data regarding patients with chronic hepatitis B(CHB)after Omicron BA.5 infection are currently limited.This study aimed to assess the clinical characteristics of patients with CHB and Omi...Background and aims:Clinical data regarding patients with chronic hepatitis B(CHB)after Omicron BA.5 infection are currently limited.This study aimed to assess the clinical characteristics of patients with CHB and Omicron BA.5 infection in South China.Methods:This retrospective study was conducted from January to March 2023 in a cohort of 485 healthy individuals and 553 patients with CHB.Clinical features,encompassing COVID-19-related symptoms,levels of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)antibodies,vaccination status,liver functions,and virological markers of hepatitis B virus(HBV)infection were measured.Results:COVID-19-related symptom patterns were similar in both groups,except for fever,which was notably less prevalent(85.4%vs.90.4%,P?0.047)among patients with CHB who experienced a significantly shorter duration of fever(median 2.2(25the75th percentile,1.0e3.0)days vs.2.3(1.0e3.0)days,P=0.048)and a shorter time for symptom relief(9.2(5.0e14.0)vs.11.1(5.0e14.0)days,P=0.015).The levels of SARS-CoV-2 antibodies were comparable between the two groups but increased after booster vaccinations.In patients with CHB,globulin(GLB)and hepatitis B envelope antibody levels were significantly increased after Omicron BA.5 infection,regardless of nucleos(t)ide analog regimens comparing entecavir(ETV)with tenofovir(TFV).Patients with CHB treated with TFV had significantly higher levels of SARS-CoV-2 antibodies than those treated with ETV(1065.1(346.9e1188.5)COI vs.765.5(24.5e1119.1)COI,P=0.025).Conclusions:No significant exacerbation of COVID-19 symptoms was observed in conjunction with the efficacy of COVID-19 booster vaccinations.There were no notable alterations in liver functions except for GLB.HBV reactivation,as evidenced by increased HBV DNA,was observed among patients with CHB after Omicron BA.5 infection.These changes were not affected by ETV versus TFV administration;however,TFV resulted in a significant increase in SARS-CoV-2 antibody levels.Further studies are required to improve care and therapeutics for patients with CHB who contracted COVID-19.展开更多
目的建立重组Omicron BA.4/5-Delta株新冠疫苗体外相对效力的检测方法,并进行验证,以期为替代体内效力检测奠定基础。方法以人源单克隆抗体GH4作为包被抗体,HRP标记的CB6人源单克隆抗体作为酶标抗体的双抗体夹心ELISA法为基础,确定疫苗...目的建立重组Omicron BA.4/5-Delta株新冠疫苗体外相对效力的检测方法,并进行验证,以期为替代体内效力检测奠定基础。方法以人源单克隆抗体GH4作为包被抗体,HRP标记的CB6人源单克隆抗体作为酶标抗体的双抗体夹心ELISA法为基础,确定疫苗解吸附方法;再以该解吸附方法结合双抗体夹心ELISA法建立体外相对效力检测方法。并验证方法的线性范围、专属性、准确性、精密性、耐用性及定量限。采用建立的方法检测3批供试品重组Omicron BA.4/5-Delta株新冠疫苗的体外相对效力。结果确定解吸附方法为:将疫苗与处理液(1.25 mL 20%二乙醇胺,0.20 mL 10%Triton X-100,8.55 mL PBS)按等体积分数混合,于25℃解离30 min,解吸附率可达95%以上。疫苗参考品在1~26 ng/mL浓度范围内,与A_(450)呈良好的线性关系,线性方程为log(y)=1.447 log(x)-1.643,R^(2)为0.998;可特异性检测疫苗参考品的体外相对效力;90000、50000和20000 ng/mL浓度疫苗参比品检测结果的回收率均在80%~120%范围内;重复性及中间精密性验证相对标准偏差(relative standard deviation,RSD)均<20%;解离条件、检测体系孵育时间和显色时间发生微小变动时,检测结果不受影响;定量限为0.2。批号为J202301002、J202301003、J202301004供试品的体外相对效力分别为1.0,1.0和0.8,RSD为11%。结论建立的用于检测体外相对效力的方法具有良好的准确性、精密性、专属性和耐用性,可用于重组Omicron BA.4/5-Delta株新冠疫苗体外相对效力的检测。展开更多
Background SARS-CoV-2 continues to mutate over time,and reports on children infected with Omicron BA.5 are limited.We aimed to analyze the specific symptoms of Omicron-infected children and to improve patient care.Met...Background SARS-CoV-2 continues to mutate over time,and reports on children infected with Omicron BA.5 are limited.We aimed to analyze the specific symptoms of Omicron-infected children and to improve patient care.Methods We selected 315 consecutively hospitalized children with Omicron BA.5 and 16,744 non-Omicron-infected febrile children visiting the fever clinic at our hospital between December 8 and 30,2022.Specific convulsions and body temperatures were compared between the two cohorts.We analyzed potential associations between convulsions and vaccination,and additionally evaluated the brain damage among severe Omicron-infected children.Results Convulsion rates(97.5%vs.4.3%,P<0.001)and frequencies(median:2.0 vs.1.6,P<0.001)significantly differed between Omicron-infected and non-Omicron-infected febrile children.The body temperatures of Omicron-infected children were significantly higher during convulsions than when they were not convulsing and those of non-Omicron-infected febrile children during convulsions(median:39.5 vs.38.2 and 38.6℃,both P<0.001).In the three Omicron-subgroups,the temperature during convulsions was proportional to the percentage of patients and significantly differed(P<0.001),while not in the three non-Omicron-subgroups(P=0.244).The convulsion frequency was lower in the 55 vaccinated children compared to the 260 non-vaccinated children(average:1.8 vs.2.1,P<0.001).The vaccination dose and convulsion frequency in Omicron-infected children were significantly correlated(P<0.001).Fifteen of the 112 severe Omicron cases had brain damage.Conclusions Omicron-infected children experience higher body temperatures and frequencies during convulsions than those of non-Omicron-infected febrile children.We additionally found evidence of brain damage caused by infection with omicron BA.5.Vaccination and prompt fever reduction may relieve symptoms.展开更多
目的观察针药并用治疗腹泻型肠易激综合征(diarrhea-irritable bowel syndrome,IBS-D)肝郁脾虚证的临床疗效以及对患者血清5-羟色胺(5-hydroxytryptamine,5-HT)、降钙素基因相关肽(calcitonin gene related peptide,CGRP)以及内皮素(end...目的观察针药并用治疗腹泻型肠易激综合征(diarrhea-irritable bowel syndrome,IBS-D)肝郁脾虚证的临床疗效以及对患者血清5-羟色胺(5-hydroxytryptamine,5-HT)、降钙素基因相关肽(calcitonin gene related peptide,CGRP)以及内皮素(endothelin,ET)的影响。方法选择60例IBS-D(肝郁脾虚证)患者作为研究对象,将患者随机分为观察组和对照组,每组30例。观察组患者采用针刺配合白术芍药散加减进行治疗,对照组仅采用针刺治疗。观察记录两组患者治疗总有效率、治疗前后中医临床症状积分差异以及IBS-D治疗前后专用生活质量量表(diarrhea-irritable bowel syndrome quality of life scale,IBS-QOL)评分差异以及两组患者治疗前后血清中5-HT、CGRP以及ET水平差异。结果观察组总有效率为83.3%,显著高于对照组的63.3%(P<0.05);治疗前两组患者中医临床症状总积分、各临床症状症状积分及IBS-QOL评分比较差异均无统计学意义(P>0.05);两组患者治疗后中医临床症状总积分、各临床症状症候积分及IBS-QOL评分与同组治疗前比较均显著降低(P<0.05);治疗后观察组中医临床症状总积分、IBS-QOL评分及治疗后3个月随访中医临床症状总积分、IBS-QOL评分与对照组比较均显著降低(P<0.05);治疗后观察组各种临床症状症状积分与对照组比较,均显著降低(P<0.05);治疗前两组患者血清中5-HT、CGRP以及ET水平比较差异无统计学意义(P>0.05);两组患者治疗后5-HT、CGRP以及ET水平与同组治疗前比较均显著降低(P<0.05);治疗后观察组5-HT、CGRP以及ET水平与对照组比较,显著降低(P<0.05)。结论针药并用治疗IBS-D(肝郁脾虚证)能够有效缓解患者临床症状,提高其生活质量,其作用机制可能是通过降低患者血清中的5-HT、CGRP以及ET水平来达到治疗的作用。展开更多
基金COVID-19 Emergency Medical Research Project of 940 Hospital(No.20yjky020)General Project of Huoshenshan Hospital Scientific Research Fund(No.HSS-217)。
文摘Since the outbreak of COVID-19,severe acute respiratory syndrome coronavirus 2 genome is still mutating,forming a variety of variants with strong transmission capacity,causing the spread of the epidemic worldwide,posing a serious threat to people's physical and mental health,and posing a major challenge to global public health.Omicron remains the main variant in several outbreaks worldwide,accounting for about 99%of the global genetic sequence.Recently,the World Health Organization announced that the subvariant of Omicron BA.5 has been found in more than 100 countries and regions around the world,causing the global epidemic rebound.However,there are few studies on the subvariant BA.5.This article reviews the latest research progress in epidemiology,infectivity,pathogenicity,vaccine and monoclonal antibody protection against Omicron subvariant BA.5,in order to provide reference for scientific prevention and control of Omicron subvariant BA.5.
文摘Background and aims:Clinical data regarding patients with chronic hepatitis B(CHB)after Omicron BA.5 infection are currently limited.This study aimed to assess the clinical characteristics of patients with CHB and Omicron BA.5 infection in South China.Methods:This retrospective study was conducted from January to March 2023 in a cohort of 485 healthy individuals and 553 patients with CHB.Clinical features,encompassing COVID-19-related symptoms,levels of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)antibodies,vaccination status,liver functions,and virological markers of hepatitis B virus(HBV)infection were measured.Results:COVID-19-related symptom patterns were similar in both groups,except for fever,which was notably less prevalent(85.4%vs.90.4%,P?0.047)among patients with CHB who experienced a significantly shorter duration of fever(median 2.2(25the75th percentile,1.0e3.0)days vs.2.3(1.0e3.0)days,P=0.048)and a shorter time for symptom relief(9.2(5.0e14.0)vs.11.1(5.0e14.0)days,P=0.015).The levels of SARS-CoV-2 antibodies were comparable between the two groups but increased after booster vaccinations.In patients with CHB,globulin(GLB)and hepatitis B envelope antibody levels were significantly increased after Omicron BA.5 infection,regardless of nucleos(t)ide analog regimens comparing entecavir(ETV)with tenofovir(TFV).Patients with CHB treated with TFV had significantly higher levels of SARS-CoV-2 antibodies than those treated with ETV(1065.1(346.9e1188.5)COI vs.765.5(24.5e1119.1)COI,P=0.025).Conclusions:No significant exacerbation of COVID-19 symptoms was observed in conjunction with the efficacy of COVID-19 booster vaccinations.There were no notable alterations in liver functions except for GLB.HBV reactivation,as evidenced by increased HBV DNA,was observed among patients with CHB after Omicron BA.5 infection.These changes were not affected by ETV versus TFV administration;however,TFV resulted in a significant increase in SARS-CoV-2 antibody levels.Further studies are required to improve care and therapeutics for patients with CHB who contracted COVID-19.
文摘目的建立重组Omicron BA.4/5-Delta株新冠疫苗体外相对效力的检测方法,并进行验证,以期为替代体内效力检测奠定基础。方法以人源单克隆抗体GH4作为包被抗体,HRP标记的CB6人源单克隆抗体作为酶标抗体的双抗体夹心ELISA法为基础,确定疫苗解吸附方法;再以该解吸附方法结合双抗体夹心ELISA法建立体外相对效力检测方法。并验证方法的线性范围、专属性、准确性、精密性、耐用性及定量限。采用建立的方法检测3批供试品重组Omicron BA.4/5-Delta株新冠疫苗的体外相对效力。结果确定解吸附方法为:将疫苗与处理液(1.25 mL 20%二乙醇胺,0.20 mL 10%Triton X-100,8.55 mL PBS)按等体积分数混合,于25℃解离30 min,解吸附率可达95%以上。疫苗参考品在1~26 ng/mL浓度范围内,与A_(450)呈良好的线性关系,线性方程为log(y)=1.447 log(x)-1.643,R^(2)为0.998;可特异性检测疫苗参考品的体外相对效力;90000、50000和20000 ng/mL浓度疫苗参比品检测结果的回收率均在80%~120%范围内;重复性及中间精密性验证相对标准偏差(relative standard deviation,RSD)均<20%;解离条件、检测体系孵育时间和显色时间发生微小变动时,检测结果不受影响;定量限为0.2。批号为J202301002、J202301003、J202301004供试品的体外相对效力分别为1.0,1.0和0.8,RSD为11%。结论建立的用于检测体外相对效力的方法具有良好的准确性、精密性、专属性和耐用性,可用于重组Omicron BA.4/5-Delta株新冠疫苗体外相对效力的检测。
基金supported by the Science and Technology Planning Project of Guangdong Province(No.2020B1111170001)The funder had no role in the study design,data collection and analysis,decision to publish,or preparation of the manuscript.
文摘Background SARS-CoV-2 continues to mutate over time,and reports on children infected with Omicron BA.5 are limited.We aimed to analyze the specific symptoms of Omicron-infected children and to improve patient care.Methods We selected 315 consecutively hospitalized children with Omicron BA.5 and 16,744 non-Omicron-infected febrile children visiting the fever clinic at our hospital between December 8 and 30,2022.Specific convulsions and body temperatures were compared between the two cohorts.We analyzed potential associations between convulsions and vaccination,and additionally evaluated the brain damage among severe Omicron-infected children.Results Convulsion rates(97.5%vs.4.3%,P<0.001)and frequencies(median:2.0 vs.1.6,P<0.001)significantly differed between Omicron-infected and non-Omicron-infected febrile children.The body temperatures of Omicron-infected children were significantly higher during convulsions than when they were not convulsing and those of non-Omicron-infected febrile children during convulsions(median:39.5 vs.38.2 and 38.6℃,both P<0.001).In the three Omicron-subgroups,the temperature during convulsions was proportional to the percentage of patients and significantly differed(P<0.001),while not in the three non-Omicron-subgroups(P=0.244).The convulsion frequency was lower in the 55 vaccinated children compared to the 260 non-vaccinated children(average:1.8 vs.2.1,P<0.001).The vaccination dose and convulsion frequency in Omicron-infected children were significantly correlated(P<0.001).Fifteen of the 112 severe Omicron cases had brain damage.Conclusions Omicron-infected children experience higher body temperatures and frequencies during convulsions than those of non-Omicron-infected febrile children.We additionally found evidence of brain damage caused by infection with omicron BA.5.Vaccination and prompt fever reduction may relieve symptoms.
文摘目的观察针药并用治疗腹泻型肠易激综合征(diarrhea-irritable bowel syndrome,IBS-D)肝郁脾虚证的临床疗效以及对患者血清5-羟色胺(5-hydroxytryptamine,5-HT)、降钙素基因相关肽(calcitonin gene related peptide,CGRP)以及内皮素(endothelin,ET)的影响。方法选择60例IBS-D(肝郁脾虚证)患者作为研究对象,将患者随机分为观察组和对照组,每组30例。观察组患者采用针刺配合白术芍药散加减进行治疗,对照组仅采用针刺治疗。观察记录两组患者治疗总有效率、治疗前后中医临床症状积分差异以及IBS-D治疗前后专用生活质量量表(diarrhea-irritable bowel syndrome quality of life scale,IBS-QOL)评分差异以及两组患者治疗前后血清中5-HT、CGRP以及ET水平差异。结果观察组总有效率为83.3%,显著高于对照组的63.3%(P<0.05);治疗前两组患者中医临床症状总积分、各临床症状症状积分及IBS-QOL评分比较差异均无统计学意义(P>0.05);两组患者治疗后中医临床症状总积分、各临床症状症候积分及IBS-QOL评分与同组治疗前比较均显著降低(P<0.05);治疗后观察组中医临床症状总积分、IBS-QOL评分及治疗后3个月随访中医临床症状总积分、IBS-QOL评分与对照组比较均显著降低(P<0.05);治疗后观察组各种临床症状症状积分与对照组比较,均显著降低(P<0.05);治疗前两组患者血清中5-HT、CGRP以及ET水平比较差异无统计学意义(P>0.05);两组患者治疗后5-HT、CGRP以及ET水平与同组治疗前比较均显著降低(P<0.05);治疗后观察组5-HT、CGRP以及ET水平与对照组比较,显著降低(P<0.05)。结论针药并用治疗IBS-D(肝郁脾虚证)能够有效缓解患者临床症状,提高其生活质量,其作用机制可能是通过降低患者血清中的5-HT、CGRP以及ET水平来达到治疗的作用。
