Objective To compare the infusion outcome of the posterior interbody autogenous micromor-selized bone graft and structure bone graft ,which were used to cure single-segment spinal tuberculosis. Methods The posterior focus debridement and bone graft fusion were conducted on 35 single-segment spinal tuberculosis patients who were cured by micromorselized bone graft and structure bone graft in the hospital from January 2010 to June 2015. Sixteen patients received micromorselized bone graft cases and 19 patients received structure bone graft. According to JOA and VAS,the fusion effects were compared and analyzed in the following aspects,such as opera-tion time,blood loss volume during the operation,kyphosis distorted Cobb angles before and after the operation and fusion time. Results Follow-up visits were paid to all 35 patients and lasted for 12 to 24 months with an aver-age visit time of 18.5 months. Spinal grafted bones showed desirable fusion without invalid screws and grated bones in the spinal canal.(1)No statistical differences were observed between two groups in terms of post-operation JOA and VAS scores.(2)The operation time and blood loss amount during the operation were smaller in the micromor-selized bone graft than those in the structure bone graft ,with significant differences between 2 groups.(3)No sig-nificant differences were observed between the two groups in terms of kyphosis distortion angle ,but regarding to loss of Cobb angles in different intervals after the operation ,it′s greater in the former group than that in the latter one. (4)No significant differences between the two groups in terms of fusion time were observed. Conclusions The two fusion approaches demonstrated no prominent difference in alleviation of the clinical symptoms and the fu-sion time. The micromorselized bone grafting was superior to the structure bone graft in aspects such as operation time and blood loss amount. However ,it′s more likely for the former to lose Cobb angles in the follow-up visits. Both of the two grafting methods were effective in the single-segment spinal tuberculosis operation. All patients ex-cept those with severely unstable spines and osteoporosis and those were too old can adopt the micromorselized bone grafting approach.

OBJECTIVETo determine the role of extracellular signal-regulated kinase (ERK)1/2 during focal cerebral ischemia.

METHODSLeft middle cerebral artery occlusion (MCAO) was undergone after the introduction of a nylon suture to the left internal carotid artery in 70 male adult CD-1 mice. ERK 1/2 phosphorylation was detected using Western blot analysis, and the morphological feature was determined by immunohistochemistry. An ERK pathway inhibitor, 1,4-diamino-2,3-dicyano-1,4-bis[2-amino-phenylthio] butadiene (U0126), was administered intravenously 20 minutes before MCAO, and the neurological deficit levels and the infarct volumes were measured 24 hours after MCAO.

RESULTSPhosphorylated ERK 1/2 (pERK 1/2) activity increased after 30 minutes of MCAO and peaked at 2 hours. The immunohistochemical study displayed a large number of pERK 1/2 positive cells in the ischemic basal ganglion and surrounding cortex. Double-labeled fluorescent staining identified the pERK1/2 positive cells as neurons or astrocytes. In U0126 treated mice which had undergone 24 hours of MCAO, the neurological deficit levels and the infarct volumes were 44.6% and 45.8% respectively, less than those of the control mice.

CONCLUSIONSERK plays an important role in focal cerebral ischemia and inhibition of the ERK pathway can help protect against ischemic brain injury, which may provide a therapeutic approach for cerebral ischemia.

Animals ; Basal Ganglia ; pathology ; Brain Ischemia ; metabolism ; pathology ; physiopathology ; Butadienes ; pharmacology ; Cerebral Cortex ; pathology ; Immunohistochemistry ; Male ; Mice ; Mitogen-Activated Protein Kinases ; antagonists & inhibitors ; physiology ; Nitriles ; pharmacology ; Phosphorylation

OBJECTIVE: To explore the clinical characteristics and molecular genetic mechanism of a fetus with recombinant chromosome 8 (Rec8) syndrome. METHODS: A fetus who was diagnosed with Rec8 syndrome at the Provincial Hospital Affiliated to Shandong First Medical University on July 20, 2021 due to high risk for sex chromosomal aneuploidy indicated by non-invasive prenatal testing (NIPT) (at 21st gestational week) was selected as the study subject. Clinical data of the fetus was collected. G-banded karyotyping and chromosomal microarray analysis (CMA) were carried out on the amniotic fluid sample. Peripheral blood samples of the couple were also subjected to G banded karyotyping analysis. RESULTS: Prenatal ultrasonography at 23rd gestational week revealed hypertelorism, thick lips, renal pelvis separation, intrahepatic echogenic foci, and ventricular septal defect. The karyotype of amniotic fluid was 46,XX,rec(8)(qter→q22.3::p23.1→qter), and CMA was arr[GRCh37]8p23.3p23.1(158049_6793322)×1, 8q22.3q24.3(101712402_146295771)×3. The karyotype of the pregnant woman was 46,XX,inv(8)(p23.1q22.3), whilst that of her husband was normal. CONCLUSION The Rec8 syndrome in the fetus may be attributed to the pericentric inversion of chromosome 8 in its mother. Molecular testing revealed that the breakpoints of this Rec8 have differed from previously reported ones.
Humans ; Fetus/abnormalities* ; Chromosomes, Human, Pair 8 ; Female ; Pregnancy ; Karyotyping

Objective:To analyze the distribution and drug resistance of pathogens of bacterial bloodstream infection in patients with hematological diseases in the Department of Hematology of Tianjin Medical University General Hospital, and to provide etiological data for clinical empirical anti-infection treatment.Methods:A retrospective analysis was conducted on the general clinical information, pathogenic bacteria and drug susceptibility test results of patients with hematological diseases diagnosed with bacterial bloodstream infection by menstrual blood culture in our center from January 2016 to December 2022.Results:Patients included 498 inpatients, with a total of 639 bacterial strains. Among the patients, 86.9% patients had malignancies, and 76.7% had agranulocytosis. Symptoms of concurrent infections, including those of the respiratory tract, oral mucosa, skin and soft tissues, and abdominal sources were observed in 68.3% patients. Gram-negative bacteria (G -) accounted for 79.0% of the isolated bacteria, and gram-positive bacteria (G +) accounted for 21.0%. The top five isolated pathogens were Klebsiella pneumoniae (22.5%), Escherichia coli (20.8%), Pseudomonas aeruginosa (15.0%), Enterococcus faecium (5.5%), and Stenotrophomonas maltophilum (5.0%). Escherichia coli exhibited a decreasing trend of resistance to quinolones, cephalosporins, and carbapenems. Klebsiella pneumoniae exhibited increasing rates of resistance to quinolones and cephalosporins between 2016 and 2018, but the rated decreased after 2019. The resistance rate to carbapenems exhibited by Pseudomonas aeruginosa was approximately 20%. Carbapenem-resistant strains of Pseudomonas aeruginosa strains were first detected in 2017, with a peak resistance rate of 35.7%, detected in 2019. A 60.0% resistance rate to methicillin was observed in methicillin-resistant coagulase-negative staphylococci (MRCNS), and one case of linezolid-resistant MRCNS was detected. Conclusions:Pathogenic bacteria of bacterial bloodstream infections were widely distributed in our center, and precautions are warranted against carbapenem resistant P. aeruginosa and Klebsiella pneumoniae.

OBJECTIVE: To analyze the effect of occupational stress on abnormity of serum total cholesterol and triglyceride in male steel workers. METHODS: A total of 3 957 male steel workers from an iron and steel group company were selected as study objects by judgment sampling method. Occupational stress was measured by the Chinese version of Job Content Questionnaire. The serum total cholesterol and triglyceride levels were measured using fasting venous blood. RESULTS: Among the 3 957 workers,the detection rate of occupational stress was 56. 8%,and 55. 0% of them showed high social support. The abnormal rates of total cholesterol and triglyceride were 21. 8% and 40. 9%,respectively. The multivariate logistic regression analysis showed that workers with high social support had high risk of abnormal total cholesterol and abnormal triglyceride than workers with low social support( P < 0. 05) after adjusting for confounding factors such as age,education level,marital status,body mass index,smoking and drinking alcohol,tea. The odds ratio of abnormal total cholesterol in occupational stress workers was 1. 17 times of that of non-occupational stress workers. No association was found between occupational stress and abnormal triglyceride( P > 0. 05). CONCLUSION: Occupational stress may be associated with abnormity of total cholesterol in male steel workers. Social support is an important influences factor to the abnormity of total cholesterol and triglyceride in male steel workers.