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Objective To determine the consistency between CT findings and real-time reverse transcription–polymerase chain reaction (RT-PCR) and to investigate the relationship between CT features and clinical prognosis in COVID-19. Methods The clinical manifestations, laboratory parameters, and CT imaging findings were analyzed in 34 COVID-19 patients, confirmed by RT-PCR from January 20 to February 4 in Hainan Province. CT scores were compared between the discharged patients and the ICU patients. Results Fever (85%) and cough (79%) were most commonly seen. Ten (29%) patients demonstrated negative results on their first RT-PCR. Of the 34 (65%) patients, 22 showed pure ground-glass opacity. Of the 34 (50%) patients, 17 had five lobes of lung involvement, while the 23 (68%) patients had lower lobe involvement. The lesions of 24 (71%) patients were distributed mainly in the subpleural area. The initial CT lesions of ICU patients were distributed in both the subpleural area and centro-parenchyma (80%), and the lesions were scattered. Sixty percent of ICU patients had five lobes involved, while this was seen in only 25% of the discharged patients. The lesions of discharged patients were mainly in the subpleural area (75%). Of the discharged patients, 62.5% showed pure ground-glass opacities; 80% of the ICU patients were in the progressive stage, and 75% of the discharged patients were at an early stage. CT scores of the ICU patients were significantly higher than those of the discharged patients. Conclusion Chest CT plays a crucial role in the early diagnosis of COVID-19, particularly for those patients with a negative RT-PCR. The initial features in CT may be associated with prognosis. Key Points • Chest CT is valuable for the early diagnosis of COVID-19, particularly for those patients with a negative RT-PCR. • The early CT findings of COVID-19 in ICU patients differed from those of discharged patients.

Objective: To explore the distribution characteristics of BDNF gene frequency in Li and Han nationalities in Hainan province. Methods: In June 2018-2019 and march to the people’s hospital of Hainan province health volunteers, 152 cases (Li 80, Han, 72), the application of polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method to detect the polymorphism of BDNF gene (rs6265), and compared with other countries and regions of ethnic comparison between BDNF gene frequency distribution. Results: No statistical difference was found in rs6265 genotype distribution of BDNF gene in Li and Han ethnic groups (P = 0.3358, P = 0.0892, P = 0.1549). Comparison of BDNF allele frequency between Li and other ethnic groups showed statistically significant differences with other ethnic groups in China and Europe (P = 0.0384, P = 0.0000), but not statistically significant differences with Japan (P = 0.1164). Conclusion: BDNF gene (rs6265) has polymorphism in both Li and Han ethnic groups in Hainan Province. Compared with ethnic groups in other countries and regions, the polymorphism distribution is ethnically different.

Studies have shown that the expression level of the brain-derived neurotrophic factor (also known as BDNF) is of great significance on neutron activity, which has a close relationship with the improvement of the learning and memory ability; it has effect on the physical growth and development of an individual as well. On the other hand, childhood autism is a group of serious neurodevelopmental disorders. Some literature has pointed out that the BDNF plays a tremendously important role in the pathogenesis and the treatment of neuropsychiatric diseases. In recent years, many scholars at home and abroad have done a lot of research and found that there is a close relationship between BDNF and autism. This paper therefore will give an introduction on and an analysis of the relationship between BDNF, the polymorphysis of its gene, and childhood autism based on the previous domestic and overseas literature.

Objective: To explore the pathogenesis of PTSD in the brain-derived neurotrophic factor (BDNF) gene methylation of patients with posttraumatic stress disorder (Posttraumatic Stress Disorder, PTSD) in Hainan Province, the relationship between the influence of BDNF gene methylation and the influence of PTSD. Methods: A case-control study method was adopted, strictly in accordance with DSM-IV and PTSD diagnosis, and 150 Li PTSD patients matched with gender and age of 300 Han PTSD patients were selected as the research objects. The peripheral venous whole blood of the subjects was drawn, genomic DNA was extracted, modified with bisulfite, and directly sequenced to quantitatively detect the methylation status of the CpG island in the promoter region of brain-derived neurotrophic factor (BDNF). Results: The results showed that the methylation levels of CPGl, CPG2, CPG3, CPG4, CPG5, CPG6, CPG7, CPG9, CPGl2, CPGl3, CPGl4, CPGl5, CPGl6, CPGl7, and CPGl8 in THE BDNF promoter were significantly different between the HAN PTSD group and the Li PTSD group (P Conclusion: It is suggested that CPG methylation in the promoter region of BDNF gene is closely related to patients with PTSD. There is a statistical difference in the level of CpG methylation in the promoter region of BDNF gene in PTSD between Li and Han ethnic groups in Hainan Province. CpG methylation in the promoter region of BDNF gene may be used as a biomarker for the diagnosis of PTSD.

SUMMARY OBJECTIVE To explore the association of brain-derived neurotrophic factor gene (BDNF) polymorphism with the latent cognitive endophenotype of posttraumatic stress disorder (PTSD) after major natural disasters in Hainan Province, China. METHODS A total of 300 patients with PTSD and 150 healthy controls (HC) were surveyed by psychoanalysis scale to assess their cognitive functions. Polymerase chain reaction (PCR) and polyacrylamide gel electrophoresis (PAGE) were used to detect the BDNF gene polymorphism. RESULTS In terms of the cognitive function, the scores in the PTSD group were worse than those of the HC group (P < 0.05 or P < 0.01). There was a significant difference in the distribution of BDNF genotype and allele frequency between the two groups (P < 0.05). PTSD endophenotypes were significantly different among the BDNF genotypes in the PTSD group (P ≤ 0.01). CONCLUSION There is a statistically significant difference in the polymorphism of BDNF gene between PTSD and HC groups, and the alleles are associated with the incidence of PTSD. Thus, it may be a risk factor for PTSD. RESUMO OBJETIVO Explorar a associação do polimorfismo do gene fator neurotrófico derivado do cérebro (BDNF) com o endofenótipo cognitivo latente de transtorno de estresse pós-traumático (TEPT) após grandes desastres naturais na província de Hainan, China. MÉTODOS Um total de 300 doentes com TEPT e 150 controles saudáveis (HC) foi investigado pela escala de psicanálise para avaliar as suas funções cognitivas. A reação em cadeia polimerase (PCR) e a eletroforese em gel de poliacrilamida (Page) foram usadas para detectar o polimorfismo do gene BDNF. RESULTADOS Em termos de função cognitiva, as pontuações no grupo TEPT foram piores do que as do grupo HC (P

Objective To investigate the correlations of four genetic single nucleotide polymorphisms (SNPs) of brain-derived neurotrophic factor (BDNF) with posttraumatic stress disorder (PTSD). Methods A total of 300 patients with sporadic PTSD and 150 healthy subjects (the control group) were selected according to the diagnostic criteria of PTSD (DSM-IV), and the genotypes of the BDNF SNPs G-712A, C270T, rs6265, and rs7103411 were detected by polymerase chain reaction and direct DNA sequencing to determine intergroup differences in the genotypes and allele frequencies; the p values were corrected with the permutation test. Results The genotypes and allele frequencies of the SNPs G-712A, rs6265, and rs7103411 of BDNF showed no significant intergroup differences (p>0.05). However, the genotype and allele frequencies of C270T showed significant differences between the PTSD group and the control group (p

Objective To investigate residents' psychological stress factors and research the correlation between post-traumatic stress disorder (PTSD) and platelet 5-HT concentrations so as to provide scientific bases for diagnosis and treatment of PTSD and psychological intervention for people in the disaster area. Methods A questionnaire survey of 5 500 residents who have accepted psychological help was conducted by the emphatic investigation method. While high performance liquid chromatography was used to detect the platelet serotonin concentration of 100 PTSD patients and 100 healthy people. Results (1) Of the 5 114 cases, 3 167 (61.93%) showed positive results in screening for psychological stress symptoms, and 399 (7.8%) were tested having apparent PTSD symptoms. Male and female prevalence showed no significant difference (χ2 = −0.380, P = 0.704). The differences of prevalence between different age groups were statistically significant (χ2 = 381.89, P = 0.000). (2) The differences in the level of platelet 5-HT between PTSD patients and normal control group were statistically significant. Conclusions The typhoon of Hainan Province caused relatively large psychological problems to the disaster victims. Compared with normal control group, the platelet 5-HT levels of PTSD patients in the disaster areas are lower. It may be related to incidents exposure levels, cultural background, religious ideas, social concerns and psychological rescue of the residents who live in the disaster areas of Hainan.

To evaluate the clinical effects of psychological interventions and drug therapy against peptic ulcer.96 patients with peptic ulcer were divided into control group with Tagamet 800 mg per evening p.o. and trial group with psychological intervention on the basis of drug treatment.There were significant differences between the two groups (P0.05), the trial group showed that the anxiety and depression cases declined obviously and effective rate of ulcer therapy was much higher than control group.In sum, psychological intervention combined with drug therapy provides an effective method for ulcer treatment.

Objective To evaluate the clinical effects of comprehensive therapy of psychological intervention and rehabilitation training on the mental health of the patients with acute stroke. Methods A total of 120 patients with acute stroke were randomly divided into trial group and control group. Both groups were given the corresponding drug therapy, medical basic nursing and convention nursing. Besides, psychological intervention and comprehensive rehabilitation training were added to the trial group. SCL-90, Europ stroke scales (ESS) score were assessed with each patient on day 3 for the first time and on day 21 for the second time; Barthel index was assessed on the day 90. Results After psychological intervention, SCL-90 declined significantly in the trial group comparing with the control group, there were signicant differences in the somatization, obsession, depression, anxiety, fear, ESS score, Barthel index and other psychological factors between the trial group and control group (P Conclusions Comprehensive therapy of early psychological intervention and rehabilitation training can significantly improve the mental health, limb movement function, stress ability and activity of daily living on the patients with acute stroke.

ObjectiveTo evaluate serum IL-2, IL-4, IL-6, IL-8, IL-10 and TNF-α levels in posttraumatic stress disorder (PTSD) patients.MethodsWe utilized ELISA technology to examine cytokines such as IL-2, IL-4, IL-6, IL-8, IL-10 and TNF-α in serum from 50 well-characterized individuals with a primary DSM-IV PTSD diagnosis, and 50 age- and gender-matched healthy controls. We conservatively employed a Mann-Whitney U testing.ResultsIndividuals with primary PTSD had significantly elevated peripheral cytokine levels for all 6 different cytokines compared to age- and gender-matched healthy controls (all P

Assessment of outcomes and outcome-related factors of in-hospital cardiopulmonary resuscitation (CPR) based on the "Utstein Style".The study was designed as a prospective, single-institution, registry investigation of 463 patients (included adult and pediatric patients) for whom a CPR was attempted.The study population consisted of 320 (69.1%) male patients and 143 (30.9%) female patients. The age range of 45-54, 55-64, 65-74 were ranked the first, the second and third highest. In the past medical history, cardiovascular disease and cerebrovascular disorder were two main disorders, accounting for 36.3% (168/463) and 9.9% (46/463), respectively. Ventricular fibrillation (VF) was the initial electrocardiographic (ECG) change in 74 patients (16.0%). Two hundred and seventy-three patients received the in-hospital CPR, and 190 patients received the pre-hospital CPR. Spontaneous circulation returned in 34.6% (160/273) of the in-hospital patients after CPR, and 16.6% (77/273) survived for 24 hours and 10.4% (48/273) survived up to the time of discharge. The rates of restoration of spontaneous circulation (ROSC) and survival of the in-hospital CPR were higher than those of the pre-hospital CPR [47.6% (130/273) vs. 15.8% (30/190), 13.9% (38/273) vs. 5.3% (10/190), both P0.01].Prospective "Utstein Style" data collection for CPR is proved to be a valuable tool for the evaluation of management and outcome following in-hospital cardiopulmonary arrest, but the rate of survival for in-hospital resuscitation still seems to be too low. The further improvement of CPR outcome is necessary.