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Objective:To analyze the viral nucleic acid and cytokines in 12 children with 2019-nCoV infection.Methods:Clinical and laboratory data of the children diagnosed with 2019-nCoV infection in Guangzhou Women and Children′s Medical Center from January to April 2020 were retrospectively analyzed. Throat and anal swabs were collected on alternate days for the detection of 2019-nCoV nucleic acid by fluorescence quantitative PCR. Flow cytometry was used to detect serum cytokines including IFN-γ, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-8, IL-10, IL-12p70, IL-17A, IL-17F, IL-22, TNF-α and TNF-β during the early (both throat and anal swab tests were positive), the intermediate (throat swab test was negative, while anal swab test remained positive), and the convalescence (both throat and anal swab tests were negative) stages of infection.Results:A total of 12 children were enrolled in this study. The male-to-female ratio was 5∶1. The average age was (7.0±4.3) years. There were two asymptomatic, five mild and five common cases. No severe or critical cases were involved. Initially, throat and anal swab nucleic acid tests were simultaneously positive in nine children newly diagnosed in our hospital and the median time of viral shedding in throat swab was longer than that in throat swab [32 (4.5, 45.0) d vs 3 (2, 9) d, Z=11.0, P=0.010]. The median difference of viral shedding time between anal swab and pharyngeal swab was 25.5 (1.5, 42.8) d. The overall levels of serum cytokines IL-17A, IL -4 and IL-5 in different stages of the disease (early, intermediate and convalescence stage) were statistically different ( Z or F, P values were 8.33, 0.016; 5.36, 0.010 and 6.56, 0.004, respectively), and a significant increase was observed in the intermediate stage of infection. IL-17F, IL-2 and IL-22 were all increased during the infection, but there was no significant statistical difference among the three stages ( P>0.05). Conclusions:It was noted that intestinal viral shedding needed a longer time. Although the infectivity has not been determined, higher requirements have been put forward for disease prevention and control. Cytokines secreted by Th2 and Th17 cells were involved in the immune response in children with non-severe 2019-nCoV infection. Monitoring viral shedding and cytokine changes in pediatric patients would be conducive to disease assessment.
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Objective To explore the clinical characteristics of children with dengue fever (DF) hospitalized in Guangzhou in 2014 , and to raise clinician′s level of understanding of dengue fever in children.Methods Clinical data of 78 children hospitalized with DF in the Department of Infectious Diseases ,Guangzhou Women and Children′s Medical Center were retrospectively analyzed .Chi-square was used for discontinuous variables ,and t test was used for continuous variabbles .Results The 78 cases aged 27 days to 14 years old ,with median of 5 years old .Fifty cases (64 .1%) were male ,and 28 cases (35 .9%) were female.Epidemic areas had gathering trend ,mainly in central urban area .Major clinical manifestations were fever (100 .00%) , rash (82 .05%) , myalgia／fatigue (28 .21%) , but without diarrhea ,jaundice ,hematemesis or hematochezia .Laboratory tests suggested leukopenia (80 .77%) and thrombocytopenia (82 .05%) ,abnormal blood coagulation function with prolonged APTT (57 .69%) ,and abnormal liver function (47 .44%).Etiology examinations showed 66 cases of children had dengue virus nucleic acid detected 1－10 days after onset ,with the positive rate of 89 .19%(66／74).A total of 48 cases had IgM positive ,with the positive rate of 81 .36%(48／59).IgM began to appear as early as the first day of disease onset ,and the average period was (5 .5 ± 0 .8) days .Dengue virus type 1 was the main type . Conclusions In 2014 , dengue virus type 1 is the main strain causing dengue fever in children in Guangzhou .Fever ,rash ,leukopenia ,thrombocytopenia ,clotting disorders and liver function damage are the main clinical features .No serious or fatal cases are reported ,and the prognosis is good.
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Objective To investigate the expression alteration and significance of long non-coding RNA (lncRNA)by GWAS(Genome-wide association study)between Esophageal squamous cell carcinoma(ESCC)and its adjacent normal esophageal tissues. Methods lncRNA and mRNA differential expression in 6 pairs of ESCC and matched non-cancerous tissues were screened by microarray assay. The target genes were predicted. Finally , GO(Gene Ontology)and Pathway analysis was used for the further research of lncRNA. Results A total of 680 lncRNA and 1472mRNA were differentially expressed at more than two-fold change(P ≤ 0.05,with 161lncRNA and 653mRNA up-regulated,519lncRNA and 819mRNA down-regulated between ESCC and its adjacent normal esophageal tissues. Gene ontology and pathway analysis results suggested that the differentially expressed genes were involved in 11 pathways.Theyare potentially associated with esophageal squamous cell carcinoma ,including post-translational protein modification ,mucin type O-Glycan biosynthesis and sphingolipid metabolism pathways , which mainly related to the changes of molecular function ,cellular components and biological processes. Through cis and trans analysis,a total of 15 differentially expressed lncRNA had cis-and/or trans-regulated target genes in the database,with 13 lncRNA had cis-regulated target genes,3 lncRNA had trans-regulated target genes,and 1 lncRNA had both cis- and trans-regulated target genes. Conclusion Compared with adjacent normal tissues ,a large number of lncRNA were expressed differentially in ESCC in Xinjiang Han people.Aberrantly expressed lncRNA may play important roles in ESCC development and progression through some signaling pathways ,which are of great significance for further search of new targets for the diagnosis and treatment of ESCC.
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<p><b>OBJECTIVE</b>To explore the clinical manifestations and laboratory examination characteristics of neonatal dengue fever.</p><p><b>METHOD</b>A retrospective analysis of 12 cases of neonatal dengue fever treated in the Guangdong Women and Children's Hospital and Guangzhou Women and Children's Medical Center was conducted, and related literature was reviewed.</p><p><b>RESULT</b>Twelve cases of neonatal dengue fever included 9 males and 3 females; their age was 30 min after birth to 29 d, the age of onset was 30 min-24 d. (1) CLINICAL FEATURES: fever was present in 11 cases, rash in 6 cases, bleeding in 1 case, jaundice in 5 cases, cough in 1 case, coagulopathy in 2 cases. (2) Mothers' perinatal conditions: 7 mothers were confirmed to have dengue fever, 2 mothers had suspected dengue fever, and in 3 mothers the dengue fever was excluded. Eight mothers prenatally had fever. (3) LABORATORY TESTS: Thrombocytopenia was found in 11 cases (19×10(9)-156×10(9)/L), activated partial thromboplastin time prolonged in 11 cases (44.0-89.8 s), fibrinogen decreased in 5 cases (1.17-3.02 g/L), aspartate aminotransferase (AST) increased in 5 cases (28-78 U/L), creatine kinase (CK-MB) increased in 4 cases (13-86 U/L), hypokalemia in 1 case (2.8-5.1 mmol/L ), C- reactive protein (CRP) increased in 6 cases (0.04-46.05 mg/L). (4) Treatment and prognosis: platelet transfusion was used in 2 cases, anti-infective therapy was given to 6 cases, intravenous gamma globulin treatment was used in 5 cases, hospitalization was 4-17 d, 10 cases were cured, 2 cases were discharged after condition was improved. Literature search was performed with "neonatal dengue" as keywords at Wanfang, Weipu, and CNKI, no relevant reports were found. Pubmed search was done with "neonatal dengue" and "case report" as keywords, 15 reports were retrieved during 1990 and 2014, which reported 30 cases, all acquired the disease via vertical transmission; the main clinical manifestations were fever, rash, petechiae, anemia, jaundice, tachycardia, and hepatomegaly; laboratory test: all had visible purpura due to thrombocytopenia; anti-infective treatment, platelet transfusion and symptomatic treatment were given, and all the 30 cases of infants were cured.</p><p><b>CONCLUSION</b>The clinical manifestations of neonatal dengue fever are characterized by fever and the disorder of blood coagulation system. The course of disease is mild, lack of specific clinical symptoms, and the prognosis is good. Mother to infant vertical transmission of dengue virus is one of the ways of transmission.</p>
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Female , Humans , Infant , Infant, Newborn , Male , Pregnancy , China , Epidemiology , Dengue , Epidemiology , Infectious Disease Transmission, Vertical , Prognosis , Retrospective Studies , ThrombocytopeniaABSTRACT
Objective To investigate the efficacy and safety of domestic Oseltamivir granules in the treatment of influenza A in children.Methods The research subjects were the hospitalized patients with influenza A coming from the Department of Infectious Disease in Guangzhou Women and Children's Medical Center.from January and March,2014 They were divided into 2 groups randomly.Patients in the treatment group received domestic Oseltamivir granules,while the patients in the control group received foreign Oseltamivir.Chi square test was performed to compare baseline characteristics and the difference in side effects.Paired t test was used to compare baseline characteristics and the difference in side effects.Results There were 44 cases in the study group,27 cases were male(61.36％),17 cases were female (38.64％),and the average age was (2.40 ± 1.97) years old.There were 40 cases in the control group,28 cases were male (70.00％),12 cases were female (30.00％),and the average age was (2.99-± 3.19) years old.The maximum age was 6 years old.The age and gender were not significant (P ＞ 0.05) between 2 groups.The fever remission time was (14.67-± 9.37) h and (11.80-± 9.98) h in the treatment group and the control group,and there was no significant difference between 2 groups (P ＞ 0.05);the flu symptoms completely remission time was (62.50 ± 25.03) h and (65.40 ± 36.74) h in the treatment group and the control group,and there was no significant difference between 2 groups (P ＞ 0.05);the adverse reaction was not observed in the treatment group,but 1 case in the control group had cough,and without special treatment cough alleviated gradually;the close contacts in 2 groups did not develop influenza A.Conclusions The domestic Oseltamivir granules are as effective and safe as the foreign Oseltamivir.And the domestic Oseltamivir granules are the granular type,and therefore more suitable for children
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@#Objective To evaluate the relationship between polymorphisms in surfactant protein (SP) genes and susceptibility to chronic obstructive pulmonary disease (COPD). Methods An extensive literature search for relevant studies was conducted in databases of Wanfang Data, VIP, Google Scholar, PubMed, CNKI, CBM, EMBASE and Web of Science and so on from inception to Sep., 2013. A meta-analysis was then performed using Stata 12.0 software. Results 7 case-control studies were included with a total of 1,279 COPD cases and 1,482 healthy controls. This meta-analysis revealed that polymorphisms of the SP-A gene might be associated with an increased risk of COPD (allele model: OR=1.53, 95%CI: 1.14~2.05, P=0.005; dominant model: OR=1.65, 95%CI: 1.02~2.69, P=0.043; recessive model: OR=1.66,95%CI: 1.17~2.35, P=0.005: homozygous model: OR=2.06, 95%CI: 1.24~3.41, P=0.005; eterozygous model: OR =1.59, 95%CI: 1.13~2.22, P=0.007; respectively). However, there was no evidence for any association between polymorphisms of the SP-B and SP-D genes and COPD risk (all P>0.05). Further subgroup analysis by ethnicity suggested that SP-A genetic polymorphisms were associated with an increased risk of COPD among Asians, but not among Caucasians. Conclusion SP-A genetic polymorphisms may contribute to increasing susceptibility to COPD, especially among Asians.
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Objective:To study the effect of antenatal administration with Dexamethasone (Dex) on the vitamin A concentrations of tissues in fetal rats.Methods:Twelve pregnant Sprague-Dawley (SD) rats were randomly divided into 2 groups,one was Dex group,the other was control group.From the gestational day 16 to 18,the rats of the two groups were given Dex and Saline by intramuscular injectionrespectively.On gestational day 19,fetal rats were obtained by cesarean section,then the vitamin A concentrations of tissues (lung,liver) were detected by high-performance liquid chromatography(HPLC).Results:(1)Compared with the two groups,the per unit vitamin A concentrations of lung and liver in Dex group were higher than those of the control groop(P