Humans ; Suicide ; Forensic Pathology

Objective To investigate the drug resistance of Acinetobacter baumannii strains isolated during 2014 in a hospital of Beijing.Methods Isolated bacteria were cultured by routine method,identified and performed drug susceptibility test by bacteria a-nalysis system.Statistical analysis of Acinetobacter baumannii was conducted by Whonet5.6 software.Results A total of 226 Acin-etobacter baumannii strains were isolated from January 2014 to December 2014 in Fengtai Teaching Hospital of Capital Medical U-niversity.These strains showed the lowest resistance rates to minocycline and Cefoperazone-sulbactam(23.0% and 30.1%).The other antimicrobial resistance rates were more than 50.0%.The resistance rate of Acinetobacter baumannii varied from one depart-ment to another.Pandrug-resistant and multi-drug resistant Acinetobacter baumannii were 71.2%,1 9.0% respectively. Conclusion The resistant rates of Acinetobacter baumannii strains to a variety of antibiotics are high.It is essential to strengthen monitoring the drug resistance of Acinetobacter baumannii,as well as use antibiotics reasonable and separate patients to control Acinetobacter baumannii infection.

MicroRNAs (miRNAs) are small non-coding RNAs that contain 22 to 25 nucleotides and play important roles in post-transcriptional regulation of target genes. MiRNAs are involved in cell proliferation, differentiation, apoptosis, inflammation, and cancer development. Alveolar bone resorption is the main clinical manifestation of periodontitis. Osteoclasts are unique cells regulated by osteoblasts and inflammatory cytokines and are responsible for bone resorption in periodontitis. Recently, miRNAs have emerged as an important regulator of osteoclast differentiation and function. In this study, we review the recent research progress on the effects of miRNAs on osteoclast differentiation and function, particularly the mechanisms of miRNAs-mediated osteoclast formation and bone loss in periodontitis.
Bone Resorption ; Bone and Bones ; Cell Differentiation ; Cell Proliferation ; Humans ; MicroRNAs ; Osteoblasts ; Osteoclasts

MicroRNAs (miRs) play an important role in regulating diverse cellular processes.It has been reported that miRs are associated with the formation and maturation of erythrocytes, and the expression of globin genes at post-transcriptional level.Compared with normal human enrythrocytes, various miRs are altered in the patients with thalassemia.These changes also happen in the patients with diverse clinical manifestations.In this paper, we systematically summarized the recent progress about the expression dysregulation of miRs in β-thalassemia and their roles in regulating the levels of γ-globin and fetal hemoglobin.During β-like globin gene expression, miRs directly or indirectly regulate the levels of erythroid-specific transcription factors through post-transcriptional action, such as B-cell lymphoma 11A (BCL11A), myeloblastosis oncogene (MYB), specificity protein 1 (Sp1), Kruppel-like factor 3 (KLF3) and GATA1.These effects subsequently regulate the switch between γ-and β-globin gene expression and affect fetal hemoglobin production.Targeting miRs might be a novel therapeutic strategy for β-thalassmeia.

Objective To develop an advanced two-cuff technique orthotopic liver transplantation model in rats. Methods On the basis of the previous two-cuff-technique, some hypercoagulable blood was released from the recipient's PV and IVC before the cuffed donor PV and IVC were inserted into the lumen of the recipient's PV and IVC. The anastomosis of recipient's SVC was between the donor's diaphragm venaccaval hiatus and recipient's SVC. Results Every anastomosis was effective. The operative successful rate and one-week survival rate were 96.7?% and 90.0?% respectively. Conclusion This model could be used as an effective measure for the study of liver transplantation in rats.

Objective To discuss the efficacy and relative factors that affect the sequential therapy of invasive and non-invasive mechanical ventilation in treating severe respiratory failure.Methods We analyzed the clinical data of the patient who was hospitalized in Respiratory Department of the Sixth Hospital of Luohe on 3th February 2008.Results The patient received invasive mechanical ventilation for 4 days,then changed to mask non-invasive positive pressure ventilation for 10 days,while receiving comprehensive treatment of anti-infection and bronchial expansion,etc.Then the patient was recovered.Conclusion The sequential therapy of invasive and non-invasive mechanical ventilation in treating severe respiratory failure is effective.The efficacy depends on the optimum converting time between invasive and non-invasive mechanical ventilation,the choice of ventilator and the patient′s compliance.

Adolescent ; Catheter Ablation ; instrumentation ; Equipment Failure ; Female ; Foreign Bodies ; etiology ; Humans ; Pulmonary Artery ; Silicones

Objective To study the correlation between psychological state and coping styles of primary caregivers of stroke patients.Method 286 primary caregivers were screened out by the random sampling method for the investigation of their psychological states and coping styles using SCL-90 and the medical coping modes questionnaire(MCMQ).Results There were significant differences between primary caregivers and Chinese norm in terms of all factors(P<0.01).The major caregivers with higher education were scored significantly lower than those with less education on the factors of depression,anxiety,hostility,fear,psychoticism (P<0.01).There were significant different differences between primary caregivers and Chinese norm in coping style(P<0.01): the score on confrontation in the coping style lower than the norm while the score on avoidance in the coping style higher than in norm.The confrontation and avoidance in the primary caregivers were negatively correlated to the factors of SCL-90(P<0.05)and yielding in the coping style positively to the factors of SCL-90(P<0.05).Conclusions The primary caregivers of stroke patients are at the poor psychological states and they tend to take the passive and negative coping styles.The more they take active coping style,the better their mental states grow and vise versa.Therefore,the caregivers need professional training so that they can use the supports from their families and be encouraged to speak out their poor moods.Post-discharge visits to them,besides,are helpful for the improved psychological states for the improvement of their quality of life.

Objective To investigate the role of gamma-aminobutyric acid (GABA) A receptor (GABAAR) in lung tissues in lipopolysaccharide (LPS)-induced acute lung injury in rats.Methods Thirty-two male Wistar rats,aged 8 weeks,weighing 200-230 g,were randomly divided into 4 groups (n =8 each) ∶ control group (group C),group LPS,GABA pretreatment + LPS group (group GABA) and GABAAR antagonist bicuculline pretreatment + LPS group (group BIC).Acute lung injury was induced by intravenous LPS 5 mg/kg in groups LPS,GABA and BIC,while the equal volume of normal saline was given in group C.GABA 50 mg/kg and bicuculline 10 μmol/kg were injected intraperitoneally 30 min before LPS injection in GABA and BIC groups,respectively.Arterial blood samples were collected at 6 h after LPS injection for measurement of arterial partial pressure of oxygen (PaO2).The animals were then sacrificed and lungs removed for determination of W/D lung weight ratio,GABAAR expression,contents of interleukin-6 (IL-6),tumor necrosis factor-α (TNF-α) and malondialdehyde (MDA) and superoxide dismutase (SOD) activity in lung tissues and for microscopic examination.Results Compared with group C,PaO2 was significantly decreased in the other three groups,and W/D lung weight ratio,TNF-α,IL-6 and MDA contents were significantly increased,GABAAR expression was up-regulated,and SOD activity was decreased in groups LPS and GABA (P ＜ 0.05).Compared with group LPS,W/D lung weight ratio,TNF-α,IL-6 and MDA contents were significantly increased,GABAAR expression was up-regulated,and SOD activity was decreased in group GABA (P ＜ 0.05),and no significant change was found in the parameters mentioned above in group BIC and in PaO2 in groups GABA and BIC (P ＞ 0.05).Conclusion GABAA R in lung tissues is involved in the development of acute lung injury induced by LPS.