To predict the occurrence ofposttraumatic stress disorder (PTSD),using a Support Vector Machine (SVM) on adults in flood district.Diagnostic and Statistical Manuals on Mental Disorders (IV Edition) were used to examine and diagnose the victims in flood districts.Based on the forecasting model of SVM with PTSD as dependent variables and 23 influence factors of PTSD as independent variables,prediction of PTSD was conducted among the victims.After considering 23 influence factors into the prediction model,the agreement rate of prediction of the model was 88.05 percent,with sensitivity as 75.0 percent,and specificity as 89.4percent.Conclusion: The prediction model based on SVM with 23 influence factors had good effect on predicting the occurrence of PTSD.

Objective:To determine the differential expressions of long non-coding RNA(lncRNA)and messenger RNA(mRNA)in normal and asthenospermia(AS)men and analyze their biological significance in AS.Methods:We isolated and ex-tracted total RNAs from 9 normal and 9 AS sperm samples,determined the expressions of RNAs in the sperm using the DNBSEQ se-quencing platform,and analyzed their relevant functions by gene ontology enrichment(GO)and Kyoto encyclopedia of genes and ge-nomes pathway(KEGG)analyses.Results:An average of 10.64G data was generated per group,with 282 185 RNAs detected,in-cluding 107 009 lncRNAs.Among the total number of lncRNAs,15 157 were differentially expressed,2 190 upregulated and 12 967 downregulated;and among the 19 514 mRNAs,13 736 were differentially expressed,4 995 upregulated and 8 741 downregulated.Differentially expressed genes were enriched mainly in the sperm cell membrane and the pathways related to the ion channel functions,sperm development and fertilization.Conclusion:Differentially expressed lncRNAs and mRNAs can be identified by sequencing a-nalysis of AS and normal sperm.Regulation of sperm function through membrane ion channels may contribute to the development of AS,which provides a molecular basis for further research on AS.

Based on standard carotid endarterectomy, we performed modified carotid endarterectomy in two cases of carotid artery stenosis by changing the direction of the carotid artery incision to avoid restenosis of the internal carotid artery without using a patch. The two patients recovered smoothly without any complications. Compared with eversion or patch endarterectomy, this modified carotid endarterectomy avoids restenosis of the carotid artery and shortens operation time.

OBJECTIVETo identify the mutational genotype of three Chinese families with X-linked adrenoleukodystrophy (X-ALD: MIM#300100).

METHODSTotal RNA was extracted from the peripheral blood leukocytes of patients 1, 2 and the mother of patient 3, using RNA blood Mini kit (QIAGEN). After reverse transcription, cDNA was amplified in four overlapping segments. The PCR products were purified and directly sequenced. To confirm the mutations, the genomic DNA was isolated from the patients and their family members using DNA blood isolation kit (MO-BIO) and analyzed by PCR-restrictive digestion or amplification refractory mutation system.

RESULTSThree distinct mutations were detected in the ABCD1 gene of the three pedigrees. A mutation of CCC-->CGC was detected at codon 534 of the ABCD1 gene from patient 1, resulting in the arginine for proline substitution. A change of GGG-->AGG was found at codon 266 of the second patient's gene, accompanied with the replacement of glycine by arginine. A mutation of CGC-->GGC was found at codon 617 in one ABCD1 allele of the third patient's mother, leading to the glycine for arginine substitution. The three mutations were confirmed through restriction analysis or amplification refractory mutation system.

CONCLUSIONThree ABCD1 gene missense mutations were detected in three unrelated Chinese families with X-linked adrenoleukodystrophy, one of which, the mutation (P534R), is novel in Chinese with ALD, and the other two G266R and R617G mutations, have been reported outside China.

ATP Binding Cassette Transporter, Sub-Family D, Member 1 ; ATP-Binding Cassette Transporters ; genetics ; Adrenoleukodystrophy ; genetics ; Child ; Child, Preschool ; Humans ; Male ; Mutation ; Pedigree

OBJECTIVETo evaluate the effect of the early use of recombinant human erythropoietin (rhu-EPO) on neurobehavioral development in preterm infants.

METHODSForty-four preterm infants (30 males and 14 females) were randomly divided into two groups: Rhu-EPO treatment and untreated control (n=22 each). From postnatal day 7, the Rhu-EPO treatment group received intravenous rhu-EPO (250 IU/kg3 times weekly) for 4 weeks. A Neonatal Behavioral Neurological Assessment (NBNA) was performed at 40 weeks of corrected gestational age. A Gesell Development Schedule was used to evaluate neurological development 6 and 12 months after birth.

RESULTSThe NBNA score in the rhu-EPO treatment group (36.20+/-0.75) was significantly higher than that in the control group (34.40+/-1.05) at 40 weeks of corrected gestational age (P<0.05). The developmental quotient of fine motor in the rhu-EPO treatment group was significantly higher than that in the control group 6 months after birth (P<0.05). By 12 months after birth, the developmental quotient of gross motor, fine motor and language in the rhu-EPO treatment group was significantly higher than that in the control group (P<0.05).

CONCLUSIONSEarly use of Rhu-EPO can promote neurobehavioral development in preterm infants.

Anemia ; prevention & control ; Brain ; drug effects ; physiology ; Child Development ; drug effects ; Erythropoietin ; therapeutic use ; Female ; Humans ; Infant Behavior ; drug effects ; Infant, Newborn ; Infant, Premature ; growth & development ; Infant, Premature, Diseases ; prevention & control ; Male ; Recombinant Proteins

OBJECTIVETo explore VEGF siRNA's effect on the immature fetal retinal microvascular endothelial cells in vitro.

METHODThe fresh retinal micrangium was primarily cultured to obtain microvascular endothelial cells. CoCl2 was used to simulate oxygen-deficient conditions. siRNA directed against human VEGF was designed and chemically synthesized. There were 3 groups in our experiment: VEGF siRNA group, hypoxia control group, and negative siRNA control group. The fetal retinal micrangium vascular endothelial cells were transfected by using liposome. The expression levels of VEGF mRNA and protein were evaluated by RT-PCR and Western blotting 24, 48, 72 h after transfection, cell proliferation was evaluated by MTT method.

RESULTThe expression levels of VEGF mRNA decreased by 21.05%, 79.67%, and 90.48% 24 h, 48 h, and 72 h after transfection as compared to those in hypoxia control group, the expression level of VEGF protein had decreased by 14.58%, 66.97%, and 81.61% as compared to those in hypoxia control group. The siRNA could decrease cell proliferation under hypoxia too, the multiplication rate after 12, 24, 48, and 72 h decreased by 15.0%, 42.9%, 78.3% and 65.9%.

CONCLUSIONVEGF siRNA could down-regulate the expression of VEGF in immature fetal retinal microvascular endothelial cells and suppressed cell proliferation. Application of siRNA to inhibit expression of VEGF may be a hopeful way to prevent and cure ROP.

Cell Hypoxia ; Cell Line ; Endothelial Cells ; metabolism ; Humans ; Infant, Newborn ; RNA, Messenger ; genetics ; RNA, Small Interfering ; Retina ; metabolism ; pathology ; Retinal Vessels ; cytology ; metabolism ; Retinopathy of Prematurity ; metabolism ; Transfection ; Vascular Endothelial Growth Factor A ; genetics ; metabolism

OBJECTIVE: To explore the application value of serum total IgE, tryptase and chymase in the identification of death caused by drug anaphylactic shock. METHODS: The general information from 235 cases of non-drug anaphylactic shock and 32 cases of drug anaphylactic shock were analyzed. The serum IgE level had been detected in the cases. Ten cases caused by coronary disease and 10 cases caused by sudden manhood death syndrome were selected from non-drug anaphylactic shock cases for the control group. Expressions of tryptase and chymase in the lung and heart were detected using immunohistochemistry method. The number and IOD of positive mast cells were counted. RESULTS: In the drug anaphylactic shock group, the IgE value of 18 samples (56.25%) was significantly higher than the normal upper limit of 120 IU/mL. In the non-drug anaphylactic shock group, the IgE value of 67 samples (28.51%) was higher than 120 IU/mL. The expressions of tryptase and chymase were significantly increased in lung and myocardial tissue in drug anaphylactic shock group (P < 0.05). CONCLUSION Tryptase and chymase are more superior than that of the serum total IgE in the diagnosis of death caused by drug anaphylactic shock, and are more suitable in forensic practice.
Adolescent ; Adult ; Aged ; Anaphylaxis/pathology* ; Autopsy ; Case-Control Studies ; Cause of Death ; Child ; Child, Preschool ; Chymases/metabolism* ; Death, Sudden, Cardiac/pathology* ; Drug Hypersensitivity ; Female ; Forensic Pathology ; Humans ; Immunoglobulin E/blood* ; Immunohistochemistry ; Infant ; Lung/pathology* ; Male ; Middle Aged ; Myocardium/pathology* ; Tryptases/metabolism* ; Young Adult

Objective To explore the treatment of infection after spinal internal fixation.Methods The clinical data of 6 patients with infection after spinal internal fixation in our hospital were analyzed retrospectively.The bacterial culture and drug susceptibility testing were performed to identify the pathogenic bacteria and sensitive antibiotics.Moxifloxacin and/or vancomycin were used empirically for anti-infective therapies first,and then sensitive antibiotics were used according to the results of bacterial culture and drug susceptibility testing.At the same time,imaging examination was performed to determine the infection site and internal fixation,and surgical treatment was decided based on the patients'condition.After operation,the body temperature,inflammatory indexes and drainage of patients were monitored continuously,and the drainage fluid was taken for bacterial culture regularly to evaluate the therapeutic effect.Results The results of bacterial culture in 5 patients were positive and the pathogenic bacteria was staphylococcus aureus,with the susceptibility to vancomycin by susceptibility testing.Among them,1 patient was treated with vancomycin for about 8 weeks because of his advanced age,more basic diseases and high risk of operation;the other 4 patients were received surgery combined with anti-infective treatment with vancomycin for 2 to 4 weeks.One case with negative bacterial culture received surgery combined with anti-infective treatment with imipenem and moxifloxacin.The wound of all patients healed in grade A,the body temperature and inflammatory indexes returned to normal,the low back pain disappeared,and the nerve root symptoms of lower extremities were significantly improved.Conclusion Once the patients with infection after spinal internal fixation are diagnosed,the pathogenic bacterial should be identified as early as possible and sensitive antibiotics should be used.Meanwhile,the internal fixation is removed or re-implanted depending on whether it is infected.

【Objective】To observe the levels of CD11b expressions in the surface of neutrophils in serum，and its correlation with left atrial diameter ，and to study the inflammatory mechanisms in atrial fibrillation（AF） patients. 【Methods】Clinical characteristics and blood samples of AF group and sinal rhythm group were collected. CD11b levels in the surface of neutrophils were examined by flow cytometry. Left atrial diameter was examined by echocardiography. 【Results】The AF group included 85 patients ：36 with paroxysmal AF；26 with persistent AF；23 with permanent AF. The sinal rhythm group includes 57 patients. PMN- CD11b levels were significantly higher in Af group than in sinal rhythm group（P＜0.01）. The left atrial diameter was larger in AF group than in sinal rhythm group（P＜0.01）. Multivariate analysis revealed that PMN-CD11b，left atrial diameter and Valvular heart disease were independent predictors of atrial fibrillation.【Conclusions】PMN- CD11b levels were elevated in paroxysmal AF when AF was present and in persistent， permanent AF patients，implying atrial fibrillation was closely related to inflammation；PMN-CD11b were correlated with left atrial diameter，inflammation might participate in the atrial structural remodeling in AF patients ；PMN-CD11b levels were elevated in AF patients with high risk thrombosis，inflammation might have some value to embolic risk stratification according to CHA2DS2-VASc score.

OBJECTIVE: To explore the mechanism that how human enterovirus 71 (EV71) invades the brainstem and how intercellular adhesion molecules-1 (ICAM-1) participates by analyzing the expression and distribution of human EV71, and ICAM-1 in brainstem of infants with brain stem encephalitis. METHODS: Twenty-two brainstem of infants with brain stem encephalitis were collected as the experimental group and 10 brainstems of fatal congenital heart disease were selected as the control group. The sections with perivascular cuffings were selected to observe EV71-VP1 expression by immunohistochemistry method and ICAM-1 expression was detected for the sections with EV71-VP1 positive expression. The staining image analysis and statistics analysis were performed. The experiment and control groups were compared. RESULTS: (1) EV71-VP1 positive cells in the experimental group were mainly astrocytes in brainstem with [dark]-brown particles, and the control group was negative. (2) ICAM-1 positive cells showed [dark]-brown. The expression in inflammatory cells (around blood vessels of brain stem and in glial nodules) and gliocytes increased. The results showed statistical difference comparing with control group (P < 0.05). CONCLUSION The brainstem encephalitis can be used to diagnose fatal EV71 infection in infants. EV71 can invade the brainstem via hematogenous route. ICAM-1 may play an important role in the pathogenic process.
Astrocytes/pathology* ; Brain Stem/virology* ; Case-Control Studies ; Encephalitis, Viral/virology* ; Enterovirus A, Human/metabolism* ; Female ; Hand, Foot and Mouth Disease/virology* ; Humans ; Immunohistochemistry ; Infant ; Intercellular Adhesion Molecule-1/metabolism* ; Male