Objective: To explore the changes of MCP-1, FKN, and related cytokines in the serum and cerebrospinal fluid (CSF) in children with epidemic encephalitis B. Methods: A total of 40 children with epidemic encephalitis B ...Objective: To explore the changes of MCP-1, FKN, and related cytokines in the serum and cerebrospinal fluid (CSF) in children with epidemic encephalitis B. Methods: A total of 40 children with epidemic encephalitis B who were admitted in our hospital from June, 2014 to June, 2017 were included in the study and divided into the severe group (n=15) and general group (n=25) according to the severity group. Moreover, 20 children who were suffered from oblique inguinal hernia, perineal adhesion, and cryptorchidism were served as the control group. The serum and CSF specimens were collected 24 h after admission and during the recovery period in children with epidemic encephalitis B. The serum specimen was collected 24 h after admission in the control group, and CSF specimen was collected during the lumbar puncture. ELISA was used to detect CMP-1, FKN, IL-1β, IL-18, and TNF-α levels in the serum and CSF. CMP-1, FKN, IL-1β, IL-18, and TNF-α levels in children with epidemic encephalitis B on the day after admission and 2-3 weeks after admission and in the control group were compared. The changes of CMP-1, FKN, IL-1β, IL-18, and TNF-α in children with severe and general epidemic encephalitis B were observed. Results: CMP-1 and FKN levels in the serum and CSF in children with epidemic encephalitis B in the critical stage were significantly higher than those in the recovery stage and in the control group. The serum CMP-1 and FKN levels in children with epidemic encephalitis B during the recovery stage were not significantly different from those in the control group, while CMP-1 and FKN levels in CSF were significantly higher than those in the control group. CMP-1 and FKN levels in the serum and CSF in children with severe epidemic encephalitis B were significantly higher than those in the general group. IL-1β, TNF-α, and IL-18 levels in the serum and CSF in children with epidemic encephalitis B during the critical stage were significantly higher than those during the recovery stage and in the control group. IL-1β, TNF-α, and IL-18 levels in the serum and CSF in children with epidemic encephalitis B during the recovery stage were significantly higher than those in the control group. IL-1β, TNF-α, and IL-18 levels in the serum and CSF in children with severe epidemic encephalitis B were significantly higher than those in the general group. Conclusions: CMP-1, FKN, IL-1β, TNF-α, and IL-18 levels in the serum and CSF in children with epidemic encephalitis B are correlated with the severity degree, detection of which can contribute to estimate the clinical typing and condition change of epidemic encephalitis.展开更多
BACKGROUND It is not uncommon to develop viral encephalitis.Epidemic Japanese B encephalitis infection combined with contactin-associated protein-like 2(CASPR-2)antibody-positive autoimmune encephalitis has not been r...BACKGROUND It is not uncommon to develop viral encephalitis.Epidemic Japanese B encephalitis infection combined with contactin-associated protein-like 2(CASPR-2)antibody-positive autoimmune encephalitis has not been reported at present.In clinical work,we need to consider more options.CASE SUMMARY A 32-year-old male worker presented with headache,fever and call-unresponsive presentation.Complete cranial magnetic resonance image showed symmetrical abnormal signals in bilateral medial temporal lobe,bilateral thalamus and basal ganglia.Improved lumbar puncture showed that cerebrospinal fluid protein and cell count increased significantly.Viral encephalitis was considered,and the patient's consciousness still increased rapidly after antiviral treatment.Further detection of Cerebrospinal fluid Japanese B encephalitis virus Polymerase Chain Reaction positive,serum autoimmune encephalitis antibody showed CASPR-2 antibody positive(1:320),the patient's condition gradually improved after plasma exchange treatment.3 mo later,the serum CASPR-2 antibody was negative and the patient's condition was stable.CONCLUSION This article reports the world’s first case of Epidemic Japanese B encephalitis infection combined with CASPR-2 antibody-positive autoimmune encephalitis,with a view to raising awareness.展开更多
An animal model of epidemic(Japanese)B encephalitis was estabilisged by injecting theJin Wei Yah 1 stain of B encephalitis virus into the peritoneal cavity of mice.The ultrastructuralchanges of the nerve cells in thei...An animal model of epidemic(Japanese)B encephalitis was estabilisged by injecting theJin Wei Yah 1 stain of B encephalitis virus into the peritoneal cavity of mice.The ultrastructuralchanges of the nerve cells in their brains were studied,special attention being paid to some types ofnerve cell in the cerebellar cortex.The infectet Purkinje cells and especially the granular cells showedspecial and inter,sting pathological features.These were compared with the changes found in the in-fected nerve cells in the cerebral cortex,diencephalon and mesencephalon.A radiating structure consisting of a microveside-microtubule aggregation body at the centerand endoplastic reticulum or virus replication multivesicular structures around it was often found in thein fected nerve cells.Its morphological features were described in detail,and its significance and the se-quenoe of events of its development discussed.In the late stage of infection,virus particles were found in the nuclei of part of the necroticcells.It is considered that they entered the nuclei from the cytoplasm during or after the death of theinfected cells.The observation smade in this study have comfimed in the granular cell of the cerebellum theidea of Chert et al.that the encephalitis B virus particle can he formed in the perinudear cistem ofthe infected nerve cell,and have brought forth further information in this respect.The way of releaseof the virus particles from the infected nerve cells observed in this study is fundamentally consistentwith that observed by Chen et al.but most of the virus particles left the nerve cell via the cell pro-展开更多
In this study, the mechanism by which Suramin inhibits the replication of epidemic encephalitis B virus was explored to provide a theoretical basis for its further application in clinical practice. After viral infecti...In this study, the mechanism by which Suramin inhibits the replication of epidemic encephalitis B virus was explored to provide a theoretical basis for its further application in clinical practice. After viral infection of HepG2 and IMR 32 cells, different concentrations of Suramin were added to the culture media, and then the cultural supernatants and infected cells were collected 48 h later. For the evaluation of the curative effect, cytopathic effect (CPE), virus titers, the expression of viral protein and viral RNA were determined by Western blot, RT PCR and in vitro RNA synthesis, respectively. At the concentration of 50 μg/ml of Suramin, HepG2 and IMR 32 infected with epidemic encephalitis B virus decreased by 51.8 % and 0.03 % respectively, as compared with controls. It was suggested that expression of encephalitis B virus proteins NS3 and E was notably reduced by Suramin. This is especially true of E protein. At RNA level, however, no difference in RNA virus was found between Suramin treated virus and non treated cells. Our results suggest that Suramin can inhibit viral replication by blocking the production of viral proteins.展开更多
This paper examines the dynamics of Hepatitis B via a Susceptible Exposed Infectious Recovered (SEIR) type epidemic model. Previous studies have shown that Hepatitis B is characterized by multiple endemic solutions, a...This paper examines the dynamics of Hepatitis B via a Susceptible Exposed Infectious Recovered (SEIR) type epidemic model. Previous studies have shown that Hepatitis B is characterized by multiple endemic solutions, a matter which may be of concern in developing control strategies. We identify the possible causes of multiple endemic solutions in a Hepatitis B model and conclude that the dependance of the probability of carriage development ?(q(Λ)) on the force of infection (Λ) is the main reason for multiple endemicity. Other factors such as a large proportion of infants that are not vaccinated (ω) may also enhance the possibility of multiple endemicity. The role of carriers may also play a key role in the possibility of such complex dynamics, i.e., when infectiousness of carriers-(α)?is high, the probability of existence of multiple endemic equilibrium solutions is increased. In our arguments, the traditional reproduction number R0G(0) < 1 does not imply stability of disease-free equilibrium.展开更多
The p65 protein is a functional subunit of NF-κB family and exhibits a crucial role in host immune and inflammatory responses,apoptosis and tumor proliferation if improperly-regulated.Given its ubiquitous association...The p65 protein is a functional subunit of NF-κB family and exhibits a crucial role in host immune and inflammatory responses,apoptosis and tumor proliferation if improperly-regulated.Given its ubiquitous association with nearly all the animal cells and its pleotropic functions,the gene encoding NF-κB p65 subunit was cloned and sequenced from porcine kidney(PK-15)cells.The gene was 1662 bp in length,encoded a 553-amino acid protein and contained the prototypical NF-κB functional domains.Real-time quantitative RT-PCR and Western blot were used to characterize the transcription and expression levels of the p65 in different pig tissues.The results indicated that the p65 gene and protein were both broadly expressed in pig tissues,but most highly expressed in the intestine-associated lymph nodes and the lungs.To localize the recombinant protein in intestinal porcine epithelial cells(IPEC-J2),the gene was subcloned into the vector pEGFP(pEGFP-p65).Using fluorescence microscopy,the protein was found confined to the cytoplasm in normal cells;however,during porcine epidemic diarrhea virus(PEDV)infection,mRNA and protein expression were significantly up-regulated and the protein exhibited an overt tendency for nuclear translocalization consistent with a regulatory role in antiviral innate immunity.展开更多
Background:Fujian Province has one of the highest reported incidences of hepatitis B virus infection in China.This study aimed to provide a theoretical framework for preventing and controlling hepatitis B in Fujian Pr...Background:Fujian Province has one of the highest reported incidences of hepatitis B virus infection in China.This study aimed to provide a theoretical framework for preventing and controlling hepatitis B in Fujian Province,and to assess the trends and the spatial-temporal distribution patterns of hepatitis B in this region.Methods:Data on hepatitis B cases were extracted from the National Notifiable Infectious Disease Surveillance System.Spatial autocorrelation analysis,trend surface analysis,and spatial-temporal scanning statistics were used to identify the spatial and aggregation patterns at the county level.The Joinpoint was used to assess the reported incidence trends.Results:The average reported incidence of hepatitis B in Fujian from 2012 to 2021 was 14.46/10,000 population,with 583,262 notified cases.The age-adjusted reported incidence of hepatitis B decreased from 17.44/10,000 population in 2012 to 11.88/10,000 population in 2021,with an average reduction in the annual percentage change of 4.5%.There were obvious spatial-temporal aggregation characteristics in hepatitis B cases,and a high-incidence area was located in eastern Fujian.Spatio-temporal scanning statistics revealed four levels of aggregation of hepatitis B reporting rates.The first level of aggregation area included Minhou,Gulou,Jin’an,Taijiang,and nine other districts and counties.Conclusions:The incidence of hepatitis B is declining in Fujian Province.Spatial clusters of hepatitis B cases in Fujian Province were identified,and high-risk areas in eastern Fujian still exist.Closely monitoring the gen-eral patterns in the occurrence of hepatitis B and implementing focused control and preventative strategies are important.展开更多
1例67岁男性患者因“阵发性抽搐发作2周余”入院,诊断为抗γ-氨基丁酸B型受体(GABA_(B)R)抗体相关脑炎。入院后给予免疫治疗,治疗过程中出现癫痫持续状态、肺部感染、低蛋白血症、凝血功能异常等。临床药师结合患者病情,在免疫治疗方案...1例67岁男性患者因“阵发性抽搐发作2周余”入院,诊断为抗γ-氨基丁酸B型受体(GABA_(B)R)抗体相关脑炎。入院后给予免疫治疗,治疗过程中出现癫痫持续状态、肺部感染、低蛋白血症、凝血功能异常等。临床药师结合患者病情,在免疫治疗方案的选择上给予甲泼尼龙联合静脉注射免疫球蛋白,在需要抗感染治疗时给予美罗培南(1 g q8h ivgtt);应用多烯磷脂酰胆碱护肝,给予氨溴索联合布地奈德改善肺功能,应用低分子量肝素钙预防血栓形成,对患者的营养和电解质平衡方面进行监护,给予患者全程化监护,最终患者病情好转出院。展开更多
Objective To understand the epidemic characteristics and viral antibody level among healthy people of Japanese B encephalitis (JE) in Henan province in 2010. Methods A total of 433 selected JE cases in Henan province ...Objective To understand the epidemic characteristics and viral antibody level among healthy people of Japanese B encephalitis (JE) in Henan province in 2010. Methods A total of 433 selected JE cases in Henan province in 2010 were analyzed by descriptive epidemiological展开更多
BACKGROUND It is not uncommon to develop autoimmune encephalitis and paraneoplastic neurological syndromes(PNS).4 kinds of antibody-positive autoimmune paraneoplastic limbic encephalitis(PLE)have not been reported.CAS...BACKGROUND It is not uncommon to develop autoimmune encephalitis and paraneoplastic neurological syndromes(PNS).4 kinds of antibody-positive autoimmune paraneoplastic limbic encephalitis(PLE)have not been reported.CASE SUMMARY PNS are distant effects of cancer on the nervous system,rather than syndromes in which cancer directly invades and metastasizes to the nerves and/or muscle tissues.If the limbic lobe system of the brain is involved,this will result in PLE.The detection of patients with PNS is challenging since tumors that cause paraneoplastic neurologic disorders are often asymptomatic,obscure,and thus easily misdiagnosed or missed.Currently,single-or double-antibody-positive paraneoplastic marginal encephalitis has been reported.However,no cases of three or more-antibody-positive cases have been reported.Here,we report a case of PLE that is anti-collapsing response-mediator protein-5,anti-neuronal nuclear antibody-type 1,anti-aminobutyric acid B receptor,and anti-glutamate deglutase positive,and address relevant literature to improve our understanding of the disease.CONCLUSION This article reports on the management of a case of PLE with four positive antibodies,a review of the literature,in order to raise awareness among clinicians.展开更多
Porcine epidemic diarrhea virus（PEDV） is a highly infectious pathogen that can cause severe diseases in pigs and result in enormous economic losses in the worldwide swine industry. Previous studies revealed that PED...Porcine epidemic diarrhea virus（PEDV） is a highly infectious pathogen that can cause severe diseases in pigs and result in enormous economic losses in the worldwide swine industry. Previous studies revealed that PEDV exhibits an obvious capacity for modulating interferon（IFN） signaling or expression. The newly discovered type III IFN, which plays a crucial role in antiviral immunity, has strong antiviral activity against PEDV proliferation in IPEC-J2 cells. In this study, we aimed to investigate the effect of PEDV nucleocapsid（N） protein on type III IFN-λ. We found that the N proteins of ten PEDV strains isolated between 2013 and 2017 from different local farms shared high nucleotide identities, while the N protein of the CV777 vaccine strain formed a monophyletic branch in the phylogenetic tree. The N protein of the epidemic strain could antagonize type III IFN, but not type I or type II IFN expression induced by polyinosinic-polycytidylic acid（poly（I：C）） in IPEC-J2 cells. Subsequently, we demonstrated that the inhibition of poly（I：C）-induced IFN-λ3 production by PEDV N protein was dependent on the blocking of nuclear factor-κB（NF-κB） nuclear translocation. These findings might help increase understanding of the pathogenesis of PEDV and its mechanisms for evading the host immune response.展开更多
China＇s Ministry of Health is going to launch a nationwide survey on the current epidemic situation of hepatitis B in a bid to give scientific support to the country＇s prevention of the disease.
Previous studies have confirmed that the anti-virus effects of Shuanghuanglian injection may be associated with nuclear factor-kappa B activity. This study observed nuclear factor-kappa B expression in mice with viral...Previous studies have confirmed that the anti-virus effects of Shuanghuanglian injection may be associated with nuclear factor-kappa B activity. This study observed nuclear factor-kappa B expression in mice with viral encephalitis, and showed significant decreases in nuclear factor-kappa B protein and mRNA levels following Shuanghuanglian injection. The inhibitory effect was more significant with prolonged intervention duration and increased treatment dose. These findings verify that Shuanghuanglian injection plays a therapeutic role in viral encephalitis by reducing expression of nuclear factor-kappa B in a time- and dose-dependent manner.展开更多
Reports of neurologic manifestations of human parvovirus B19(B19) infection have been on the rise. Acute encephalitis and encephalopathy is the most common, accounting for 38.8% of total B19-associated neurological ma...Reports of neurologic manifestations of human parvovirus B19(B19) infection have been on the rise. Acute encephalitis and encephalopathy is the most common, accounting for 38.8% of total B19-associated neurological manifestations. To date, 34 children with B19encephalitis and encephalopathy have been reported, which includes 21 encephalitis and 13 encephalopathy cases. Ten(29%) were immunocompromised and 17(39%) had underlying diseases. Fever at the onset of disease and rash presented in 44.1% and 20.6% of patients, respectively. Neurological manifestations include alteration of consciousness occurred in all patients, seizures in 15(44.1%) patients, and focal neurologic signs in 12(35.3%) patients. Anemia and pleocytosis in cerebrospinal fluid(CSF) occurred in 56.3% and 48.1% of patients, respectively. Serum Anti-B19 Ig M(82.6%) and CSF B19 DNA(90%) were positive in the majority of cases. Some patients were treated with intravenous immunoglobulins and/or steroids, although an accurate evaluation of the efficacy of these treatment modalities cannot be determined. Nineteen(57.6%) patients recovered completely, 11(33.3%) patients had some neurological sequelae and 3(8.8%) patients died. Although the precise pathogenesis underlying the development of B19 encephalitis and encephalopathy is unclear, direct B19 infection or NS1 protein of B19 toxicity in the brain, and immune-mediated brain injuries have been proposed.展开更多
A mouse model of viral encephalitis was induced by intracranial injection of a Coxsackie virus B3 suspension. Quantitative real-time reverse transcription-PCR and western blot assay were applied to detect mRNA and pro...A mouse model of viral encephalitis was induced by intracranial injection of a Coxsackie virus B3 suspension. Quantitative real-time reverse transcription-PCR and western blot assay were applied to detect mRNA and protein expression of intelectin-2 and nuclear factor-kappa B in the viral encephalitis and control groups. Nuclear factor-kappa B and intelectin-2 mRNA and protein expression were significantly increased in mice with viral encephalitis. After intraperitoneal injection of Shuanghuanglian at a dose of 1.5 mg/kg for 5 successive days, intelectin-2 and nuclear factor-kappa B protein and mRNA expression were significantly decreased. To elucidate the relationship between intelectin-2 and nuclear factor-kappa B, mice with viral encephalitis were administered an intracerebral injection of 107 pfu recombinant lentivirus expressing intelectin shRNA. Both protein and mRNA levels of intelectin and nuclear factor-kappa B in brain tissue of mice were significantly decreased. Experimental findings suggest that Shuanghuanglian injection may downregulate nuclear factor-kappa B production via suppression of intelectin production, thus inhibiting inflammation associated with viral encephalitis.展开更多
文摘Objective: To explore the changes of MCP-1, FKN, and related cytokines in the serum and cerebrospinal fluid (CSF) in children with epidemic encephalitis B. Methods: A total of 40 children with epidemic encephalitis B who were admitted in our hospital from June, 2014 to June, 2017 were included in the study and divided into the severe group (n=15) and general group (n=25) according to the severity group. Moreover, 20 children who were suffered from oblique inguinal hernia, perineal adhesion, and cryptorchidism were served as the control group. The serum and CSF specimens were collected 24 h after admission and during the recovery period in children with epidemic encephalitis B. The serum specimen was collected 24 h after admission in the control group, and CSF specimen was collected during the lumbar puncture. ELISA was used to detect CMP-1, FKN, IL-1β, IL-18, and TNF-α levels in the serum and CSF. CMP-1, FKN, IL-1β, IL-18, and TNF-α levels in children with epidemic encephalitis B on the day after admission and 2-3 weeks after admission and in the control group were compared. The changes of CMP-1, FKN, IL-1β, IL-18, and TNF-α in children with severe and general epidemic encephalitis B were observed. Results: CMP-1 and FKN levels in the serum and CSF in children with epidemic encephalitis B in the critical stage were significantly higher than those in the recovery stage and in the control group. The serum CMP-1 and FKN levels in children with epidemic encephalitis B during the recovery stage were not significantly different from those in the control group, while CMP-1 and FKN levels in CSF were significantly higher than those in the control group. CMP-1 and FKN levels in the serum and CSF in children with severe epidemic encephalitis B were significantly higher than those in the general group. IL-1β, TNF-α, and IL-18 levels in the serum and CSF in children with epidemic encephalitis B during the critical stage were significantly higher than those during the recovery stage and in the control group. IL-1β, TNF-α, and IL-18 levels in the serum and CSF in children with epidemic encephalitis B during the recovery stage were significantly higher than those in the control group. IL-1β, TNF-α, and IL-18 levels in the serum and CSF in children with severe epidemic encephalitis B were significantly higher than those in the general group. Conclusions: CMP-1, FKN, IL-1β, TNF-α, and IL-18 levels in the serum and CSF in children with epidemic encephalitis B are correlated with the severity degree, detection of which can contribute to estimate the clinical typing and condition change of epidemic encephalitis.
文摘BACKGROUND It is not uncommon to develop viral encephalitis.Epidemic Japanese B encephalitis infection combined with contactin-associated protein-like 2(CASPR-2)antibody-positive autoimmune encephalitis has not been reported at present.In clinical work,we need to consider more options.CASE SUMMARY A 32-year-old male worker presented with headache,fever and call-unresponsive presentation.Complete cranial magnetic resonance image showed symmetrical abnormal signals in bilateral medial temporal lobe,bilateral thalamus and basal ganglia.Improved lumbar puncture showed that cerebrospinal fluid protein and cell count increased significantly.Viral encephalitis was considered,and the patient's consciousness still increased rapidly after antiviral treatment.Further detection of Cerebrospinal fluid Japanese B encephalitis virus Polymerase Chain Reaction positive,serum autoimmune encephalitis antibody showed CASPR-2 antibody positive(1:320),the patient's condition gradually improved after plasma exchange treatment.3 mo later,the serum CASPR-2 antibody was negative and the patient's condition was stable.CONCLUSION This article reports the world’s first case of Epidemic Japanese B encephalitis infection combined with CASPR-2 antibody-positive autoimmune encephalitis,with a view to raising awareness.
文摘An animal model of epidemic(Japanese)B encephalitis was estabilisged by injecting theJin Wei Yah 1 stain of B encephalitis virus into the peritoneal cavity of mice.The ultrastructuralchanges of the nerve cells in their brains were studied,special attention being paid to some types ofnerve cell in the cerebellar cortex.The infectet Purkinje cells and especially the granular cells showedspecial and inter,sting pathological features.These were compared with the changes found in the in-fected nerve cells in the cerebral cortex,diencephalon and mesencephalon.A radiating structure consisting of a microveside-microtubule aggregation body at the centerand endoplastic reticulum or virus replication multivesicular structures around it was often found in thein fected nerve cells.Its morphological features were described in detail,and its significance and the se-quenoe of events of its development discussed.In the late stage of infection,virus particles were found in the nuclei of part of the necroticcells.It is considered that they entered the nuclei from the cytoplasm during or after the death of theinfected cells.The observation smade in this study have comfimed in the granular cell of the cerebellum theidea of Chert et al.that the encephalitis B virus particle can he formed in the perinudear cistem ofthe infected nerve cell,and have brought forth further information in this respect.The way of releaseof the virus particles from the infected nerve cells observed in this study is fundamentally consistentwith that observed by Chen et al.but most of the virus particles left the nerve cell via the cell pro-
基金ThisprojectwassupportedbythefundofChineseServiceCenterforScholarlyExchange (No .1999- 36 3)
文摘In this study, the mechanism by which Suramin inhibits the replication of epidemic encephalitis B virus was explored to provide a theoretical basis for its further application in clinical practice. After viral infection of HepG2 and IMR 32 cells, different concentrations of Suramin were added to the culture media, and then the cultural supernatants and infected cells were collected 48 h later. For the evaluation of the curative effect, cytopathic effect (CPE), virus titers, the expression of viral protein and viral RNA were determined by Western blot, RT PCR and in vitro RNA synthesis, respectively. At the concentration of 50 μg/ml of Suramin, HepG2 and IMR 32 infected with epidemic encephalitis B virus decreased by 51.8 % and 0.03 % respectively, as compared with controls. It was suggested that expression of encephalitis B virus proteins NS3 and E was notably reduced by Suramin. This is especially true of E protein. At RNA level, however, no difference in RNA virus was found between Suramin treated virus and non treated cells. Our results suggest that Suramin can inhibit viral replication by blocking the production of viral proteins.
文摘This paper examines the dynamics of Hepatitis B via a Susceptible Exposed Infectious Recovered (SEIR) type epidemic model. Previous studies have shown that Hepatitis B is characterized by multiple endemic solutions, a matter which may be of concern in developing control strategies. We identify the possible causes of multiple endemic solutions in a Hepatitis B model and conclude that the dependance of the probability of carriage development ?(q(Λ)) on the force of infection (Λ) is the main reason for multiple endemicity. Other factors such as a large proportion of infants that are not vaccinated (ω) may also enhance the possibility of multiple endemicity. The role of carriers may also play a key role in the possibility of such complex dynamics, i.e., when infectiousness of carriers-(α)?is high, the probability of existence of multiple endemic equilibrium solutions is increased. In our arguments, the traditional reproduction number R0G(0) < 1 does not imply stability of disease-free equilibrium.
基金Supported by the National Natural Science Foundation of China(31370140,31372438)。
文摘The p65 protein is a functional subunit of NF-κB family and exhibits a crucial role in host immune and inflammatory responses,apoptosis and tumor proliferation if improperly-regulated.Given its ubiquitous association with nearly all the animal cells and its pleotropic functions,the gene encoding NF-κB p65 subunit was cloned and sequenced from porcine kidney(PK-15)cells.The gene was 1662 bp in length,encoded a 553-amino acid protein and contained the prototypical NF-κB functional domains.Real-time quantitative RT-PCR and Western blot were used to characterize the transcription and expression levels of the p65 in different pig tissues.The results indicated that the p65 gene and protein were both broadly expressed in pig tissues,but most highly expressed in the intestine-associated lymph nodes and the lungs.To localize the recombinant protein in intestinal porcine epithelial cells(IPEC-J2),the gene was subcloned into the vector pEGFP(pEGFP-p65).Using fluorescence microscopy,the protein was found confined to the cytoplasm in normal cells;however,during porcine epidemic diarrhea virus(PEDV)infection,mRNA and protein expression were significantly up-regulated and the protein exhibited an overt tendency for nuclear translocalization consistent with a regulatory role in antiviral innate immunity.
基金supported by the Fujian Research and Training Grants for Young and Middle-aged Leaders in Healthcare.
文摘Background:Fujian Province has one of the highest reported incidences of hepatitis B virus infection in China.This study aimed to provide a theoretical framework for preventing and controlling hepatitis B in Fujian Province,and to assess the trends and the spatial-temporal distribution patterns of hepatitis B in this region.Methods:Data on hepatitis B cases were extracted from the National Notifiable Infectious Disease Surveillance System.Spatial autocorrelation analysis,trend surface analysis,and spatial-temporal scanning statistics were used to identify the spatial and aggregation patterns at the county level.The Joinpoint was used to assess the reported incidence trends.Results:The average reported incidence of hepatitis B in Fujian from 2012 to 2021 was 14.46/10,000 population,with 583,262 notified cases.The age-adjusted reported incidence of hepatitis B decreased from 17.44/10,000 population in 2012 to 11.88/10,000 population in 2021,with an average reduction in the annual percentage change of 4.5%.There were obvious spatial-temporal aggregation characteristics in hepatitis B cases,and a high-incidence area was located in eastern Fujian.Spatio-temporal scanning statistics revealed four levels of aggregation of hepatitis B reporting rates.The first level of aggregation area included Minhou,Gulou,Jin’an,Taijiang,and nine other districts and counties.Conclusions:The incidence of hepatitis B is declining in Fujian Province.Spatial clusters of hepatitis B cases in Fujian Province were identified,and high-risk areas in eastern Fujian still exist.Closely monitoring the gen-eral patterns in the occurrence of hepatitis B and implementing focused control and preventative strategies are important.
文摘1例67岁男性患者因“阵发性抽搐发作2周余”入院,诊断为抗γ-氨基丁酸B型受体(GABA_(B)R)抗体相关脑炎。入院后给予免疫治疗,治疗过程中出现癫痫持续状态、肺部感染、低蛋白血症、凝血功能异常等。临床药师结合患者病情,在免疫治疗方案的选择上给予甲泼尼龙联合静脉注射免疫球蛋白,在需要抗感染治疗时给予美罗培南(1 g q8h ivgtt);应用多烯磷脂酰胆碱护肝,给予氨溴索联合布地奈德改善肺功能,应用低分子量肝素钙预防血栓形成,对患者的营养和电解质平衡方面进行监护,给予患者全程化监护,最终患者病情好转出院。
文摘Objective To understand the epidemic characteristics and viral antibody level among healthy people of Japanese B encephalitis (JE) in Henan province in 2010. Methods A total of 433 selected JE cases in Henan province in 2010 were analyzed by descriptive epidemiological
文摘BACKGROUND It is not uncommon to develop autoimmune encephalitis and paraneoplastic neurological syndromes(PNS).4 kinds of antibody-positive autoimmune paraneoplastic limbic encephalitis(PLE)have not been reported.CASE SUMMARY PNS are distant effects of cancer on the nervous system,rather than syndromes in which cancer directly invades and metastasizes to the nerves and/or muscle tissues.If the limbic lobe system of the brain is involved,this will result in PLE.The detection of patients with PNS is challenging since tumors that cause paraneoplastic neurologic disorders are often asymptomatic,obscure,and thus easily misdiagnosed or missed.Currently,single-or double-antibody-positive paraneoplastic marginal encephalitis has been reported.However,no cases of three or more-antibody-positive cases have been reported.Here,we report a case of PLE that is anti-collapsing response-mediator protein-5,anti-neuronal nuclear antibody-type 1,anti-aminobutyric acid B receptor,and anti-glutamate deglutase positive,and address relevant literature to improve our understanding of the disease.CONCLUSION This article reports on the management of a case of PLE with four positive antibodies,a review of the literature,in order to raise awareness among clinicians.
基金Project supported by the National Natural Science Foundation of China(No.31702250)the Key Research and Development Project Funds of Zhejiang Provincial Science and Technology Department(Nos.2015C02044 and 2018C02028)+2 种基金the Agricultural Technology Extension Funds of Zhejiang Universitythe Dabei Agricultural Discipline Development and Talent Training Fund(No.2017ZDNT004)the Three Rural and Six Party Funds,China
文摘Porcine epidemic diarrhea virus（PEDV） is a highly infectious pathogen that can cause severe diseases in pigs and result in enormous economic losses in the worldwide swine industry. Previous studies revealed that PEDV exhibits an obvious capacity for modulating interferon（IFN） signaling or expression. The newly discovered type III IFN, which plays a crucial role in antiviral immunity, has strong antiviral activity against PEDV proliferation in IPEC-J2 cells. In this study, we aimed to investigate the effect of PEDV nucleocapsid（N） protein on type III IFN-λ. We found that the N proteins of ten PEDV strains isolated between 2013 and 2017 from different local farms shared high nucleotide identities, while the N protein of the CV777 vaccine strain formed a monophyletic branch in the phylogenetic tree. The N protein of the epidemic strain could antagonize type III IFN, but not type I or type II IFN expression induced by polyinosinic-polycytidylic acid（poly（I：C）） in IPEC-J2 cells. Subsequently, we demonstrated that the inhibition of poly（I：C）-induced IFN-λ3 production by PEDV N protein was dependent on the blocking of nuclear factor-κB（NF-κB） nuclear translocation. These findings might help increase understanding of the pathogenesis of PEDV and its mechanisms for evading the host immune response.
文摘China＇s Ministry of Health is going to launch a nationwide survey on the current epidemic situation of hepatitis B in a bid to give scientific support to the country＇s prevention of the disease.
基金the Health Research Fund from Health Department of Shaanxi Province,China,No. 04015
文摘Previous studies have confirmed that the anti-virus effects of Shuanghuanglian injection may be associated with nuclear factor-kappa B activity. This study observed nuclear factor-kappa B expression in mice with viral encephalitis, and showed significant decreases in nuclear factor-kappa B protein and mRNA levels following Shuanghuanglian injection. The inhibitory effect was more significant with prolonged intervention duration and increased treatment dose. These findings verify that Shuanghuanglian injection plays a therapeutic role in viral encephalitis by reducing expression of nuclear factor-kappa B in a time- and dose-dependent manner.
文摘Reports of neurologic manifestations of human parvovirus B19(B19) infection have been on the rise. Acute encephalitis and encephalopathy is the most common, accounting for 38.8% of total B19-associated neurological manifestations. To date, 34 children with B19encephalitis and encephalopathy have been reported, which includes 21 encephalitis and 13 encephalopathy cases. Ten(29%) were immunocompromised and 17(39%) had underlying diseases. Fever at the onset of disease and rash presented in 44.1% and 20.6% of patients, respectively. Neurological manifestations include alteration of consciousness occurred in all patients, seizures in 15(44.1%) patients, and focal neurologic signs in 12(35.3%) patients. Anemia and pleocytosis in cerebrospinal fluid(CSF) occurred in 56.3% and 48.1% of patients, respectively. Serum Anti-B19 Ig M(82.6%) and CSF B19 DNA(90%) were positive in the majority of cases. Some patients were treated with intravenous immunoglobulins and/or steroids, although an accurate evaluation of the efficacy of these treatment modalities cannot be determined. Nineteen(57.6%) patients recovered completely, 11(33.3%) patients had some neurological sequelae and 3(8.8%) patients died. Although the precise pathogenesis underlying the development of B19 encephalitis and encephalopathy is unclear, direct B19 infection or NS1 protein of B19 toxicity in the brain, and immune-mediated brain injuries have been proposed.
基金funded by the Health Research Fund from the Health Department of Shanxi Province, China, No.04015
文摘A mouse model of viral encephalitis was induced by intracranial injection of a Coxsackie virus B3 suspension. Quantitative real-time reverse transcription-PCR and western blot assay were applied to detect mRNA and protein expression of intelectin-2 and nuclear factor-kappa B in the viral encephalitis and control groups. Nuclear factor-kappa B and intelectin-2 mRNA and protein expression were significantly increased in mice with viral encephalitis. After intraperitoneal injection of Shuanghuanglian at a dose of 1.5 mg/kg for 5 successive days, intelectin-2 and nuclear factor-kappa B protein and mRNA expression were significantly decreased. To elucidate the relationship between intelectin-2 and nuclear factor-kappa B, mice with viral encephalitis were administered an intracerebral injection of 107 pfu recombinant lentivirus expressing intelectin shRNA. Both protein and mRNA levels of intelectin and nuclear factor-kappa B in brain tissue of mice were significantly decreased. Experimental findings suggest that Shuanghuanglian injection may downregulate nuclear factor-kappa B production via suppression of intelectin production, thus inhibiting inflammation associated with viral encephalitis.
