Objective:To investigate the influences of blood pressure fluctuation and biochemical parameters in early cognitive impairment in patients with basal ganglia hypertensive intracerebral hemorrhage (HICH).Methods:A total of 148 patients with basal ganglia HICH, admitted to Department of Neurosurgery, Second Affiliated Hospital of Soochow University from January 2022 to January 2024 were enrolled. Four weeks after onset, these patients accepted Montreal cognitive assessment (MoCA) and were divided into cognitive impairment group (MoCA scores<26, n=62) and non-cognitive impairment group (MoCA scores≥26, n=86) accordingly. Clinical data and average blood pressure on 7 consecutive d (since admission) were collected, and differences of clinical data, mean systolic blood pressure (MSBP), mean diastolic blood pressure (MDBP), and long-term blood pressure variability indexes were compared between the two groups. Multivariate Logistic regression analysis was used to screen the independent influencing factors for cognitive impairment; spearman rank correlation was used to analyze the correlation between independent influencing factors and MoCA score; and receiver operating characteristic (ROC) curve was used to analyze the diagnostic value of independent influencing factors in cognitive impairment. Results:Compared with the non-cognitive impairment group, the cognitive impairment group had significantly longer hypertension duration, statistically higher interleukin-6 (IL-6), MSBP, MDBP and 7 d-duration standard deviation of systolic blood pressure (7dSSD), and significantly lower albumin ( P<0.05). Multivariate Logistic regression analysis showed that hypertension duration ( OR=1.258, 95% CI: 1.134-1.396, P<0.001), MSBP ( OR=1.770, 95% CI: 1.267-2.473, P=0.001), 7dSSD ( OR=1.139, 95% CI: 1.038-1.249, P=0.006), and IL-6 ( OR=1.156, 95% CI: 1.076-1.241, P<0.001) were independent influencing factors for early cognitive impairment in patients with basal ganglia HICH. Spearman rank correlation showed that hypertension duration, MSBP, 7DSSD, and IL-6 were negatively correlated with MoCA score ( rs=-0.271, P=0.001; rs=-0.493, P<0.001; rs=-0.264, P=0.001; rs=-0.412, P<0.001). Area under ROC curve of combined use of MSBP, 7dSSD, hypertension duration and IL-6 in diagnosing early cognitive impairment was 0.932, with sensitivity of 0.855 and specificity of 0.895. Conclusion:MSBP, 7dSSD, hypertension duration and IL-6 might be hemodynamic and serological monitoring indexes for predicting early cognitive impairment in patients with basal ganglia HICH.

Objective:To compare the clinical efficacy and safety of surgeries via frontal keyhole approach assisted by neuro-endoscope and via temporal keyhole approach assisted by microscope in cerebral basal ganglia hemorrhage. Methods:One hundred and five patients with basal ganglia cerebral hemorrhage admitted to our hospital from January 2017 to January 2020 were chosen in our study; 51 patients underwent surgeries via frontal keyhole approach assisted by neuro-endoscope (neuro-endoscopy group) and 54 patients underwent surgeries via temporal keyhole approach assisted by microscope (microscopy group). The clinical data of these patients were retrospectively analyzed; and the differences of hematoma clearance rate, intraoperative blood loss, duration of surgery, length of hospital stays, Glasgow Coma Scale (GCS) scores one week after surgery, incidence of postoperative complications, and activity of daily living (ADL) scores 6 months after surgery were compared between the 2 groups. Results:There were no significant differences in hematoma clearance rate and length of hospital stays between the 2 groups ( P>0.05). As compared with the microscopy group, the neuro-endoscopy group had significantly lower intraoperative blood loss, significantly shorter duration of surgery, and statistically higher GCS scores one week after surgery ( P<0.05). There were no significant differences in incidence of postoperative complications and ADL scores 6 months after surgery between 2 groups ( P>0.05). Conclusion:Both surgeries via frontal keyhole approach assisted by neuro-endoscope and via temporal keyhole approach assisted by microscope can effectively clear the intracranial hematoma in patients with cerebral hemorrhage in the basal ganglia and protect neurological function; however, surgeries via frontal keyhole approach assisted by neuro-endoscope has advantages of shorter duration of surgery and lower intraoperative blood loss, and earlier neurological function recovery.

An ultra-high performance liquid chromatography-mass spectrometry ( UPLC-MS/MS) method was developed for the determination of 8 kinds of cephalosporins, cefoperazone, cefquinome, cefalonium, cefazolin, cefapirin, Ceftiofur, cefpirome and cefalexin, in edible parts of aquatic products. The samples were extracted with acetonitrile-water and cleaned up by multi-walled carbon nanotubes ( MwCNTs) SPE cartridge. All the target compounds were separated on an Acquity Xselect CSH C18 column with gradient elution by using acetonitrile and 0. 1% formic acid aqueous as eluent, and detected by UPLC-MS/MS under ESI+ ionization and MRM mode. Under optimized conditions, this method had a good linearity (R2≥0. 995) and the limits of quantification were in the range of 2-10 μg/kg ( S/N=10 ) . The recoveries of the method for the target compounds spiked at three different levels were 67. 3%-94. 2% with the relative standard deviations (RSDs) of 3. 3%-14%. The method had the characteristics of low cost, high accuracy and good precision, and could meet the requirements of cephalosporins determination.

Objective To discuss the clinical efficacy of surgery for chronic subdural hematoma assisted by rigid neuroendoscope and its surgical techniques. Methods Clinical data of 161 patients with chronic subdural hematoma from August 2009 to December 2015 was analyzed retrospectively. 74 of them experienced surgeries assisted by rigid neuroendoscope (endoscope group) and other 87 cases were operated without neuroendoscope (routine group) during the same period. Results Although there were significant difference in operative duration between the two groups, complications, ratio of total removal of hematoma after surgery, postoperative inpatient duration and recurrent rate of hematoma were more advantageous in endoscope group. The operative duration of endoscope group with (112.68 ± 34.86) min was longer than that of routine group with (74.11 ± 28.23) min (t = 7.75, P = 0.000), while the postoperative inpatient duration of endoscope group with (8.23 ± 2.01) d was shorter than that of another group with (10.79 ± 5.02) d (t = -4.12, P = 0.000). There were no surgical associated complications in endoscope group, but 1 patient in routine group experienced intracerebral hematoma of frontal lobe and associated aphemia. Total removal of hematoma was confirmed in endoscope group with 98.65% (73/74), which was higher than that in routine group with 86.21% (75/78) (χ2 = 8.34, P = 0.004). Hematoma recurrence was found in 16 cases of routine group (18.39%), but more superiority in endoscope group with 1.35% (χ2 = 12.29, P = 0.000). Outpatient follow-up was carried out in all patients from 6 to 38 months with an average duration of 30.06 months. In 17 cases with recurrent hematoma during follow-up, 15 of them were cured by a second surgery, and another 2 patients were cured by atorvastatin. Conclusion As a simple, safe and effective technique, the application of rigid neuroendoscope during surgery for chronic subdural hematoma is more advantage than routine surgery. A self-made suction with adjustable soft curved tip is suitable for such procedure.

A method was developed for the determination of tetrodotoxin in marine organisms by high perfor-mance liquid chromatography-mass spectrometry with immunoaffinity column. The samples were extracted with 1% acetic acid methanol solution and diluted with phosphate buffer at pH 7-8. After cleaned up by immuno-affinity column, the samples were analyzed by LC-MS/MS and quantitatively determined by external standard method. The chromatographic separation was performed on an ACQUITY UPLC BEH Amide column with gradient elution by using acetonitrile and 5 mol/L ammonium acetate solution containing 0. 1% formic acid as mobile phase. Detection was carried out by electrospray positive ionization mass spectrometry in the multiple reaction monitoring mode. Linear ranges of TTX was in the range of 0. 3 -20. 0 μg/L with correlation coeffi-cient more than 0. 997. The quantification limit of the method was 0. 3 μg/kg. The recoveries of standard addition for tetrodotoxin were 88. 7%-102. 3%, and the relative standard deviation was 2. 0%-6. 4%. The method could be used to identify and quantify tetrodotoxin in marine organisms with satisfactory reproducibility and sensitivity.

Objective To explore the effect of fluoxetine on the brain function of bulimia nervosa (BN) patients.Methods Seven female BN patients,who met criteria of the 3rd version Chinese Criteria of Mental Diseases (CCMD-3),accepted functional magnetic resonance imaging (fMRI) examinations before and after the antidepressant treatment (fluoxetine (20 mg/day)) for three months.Seven normal controls accepted the same fMRI examination only at baseline.fMRI imaging was block-design.Blocks of food or non-food stimulus containing pictures selected from International Affective Picture System (IAPS) which were shown by computer automatically.All subjects were evaluated by Hamilton anxiety scale (HAMA),Hamilton depression scale (HAMD17) and Likert Scale-likelihood evaluation to the same pictures in the fMRI imaging blocks.Results The average intensity and volume activated in BN before treatment were both significantly lower than that in the control (P＜0.05).But under stimulus of food pictures,bilateral prefrontal cortex and left amygdala of BN patients were significantly activated.After fluoxetine treatment,the intensity and volume activated both increased significantly (P＜0.01) and the main areas being activated were right temporal,cerebellum and bilateral prefrontal cortex.Conclusion Fluoxetine improves the bulimic symptoms of BN patients and decreases abnormal activation of prefrontal and limbic in these areas.The underline mechanism may be related to functions of serotonin system in prefrontal-limbic path.

OBJECTIVETo analyze the characteristics of azoospermia factor(AZF) deletions in Y-chromosome.

METHODSBased on the AZF microdeletion screening on 272 cases of azoospermia and 240 cases of severe oligozoo spermia, 49 cases were investigated using 23 sequence-tagged sites (STS) in AZFa, AZFb and AZFc. For some cases, single nucleotide rarians (SNV) method was applied to identify the single nucleotide polymorphism (SNPs) in four DAZ gene copies and to determine the copy number of the DAZ gene.

RESULTSIn 6 cases with deletions of AZFb+c, there was 1 case with sY98/sY1206 deletion, 4 cases with P5/distal-P1 recombination and 1 with P4/distal-P1 recombination. In 3 cases with deletions in AZFb, 1 case showed P5/P3 deletion and 2 cases showed P5/proximal-P1 recombination with DAZ1 and DAZ2 deletions. b2/b4 recombination was observed in all the 40 cases with deletions in AZFc. A fraction of patients with AZFb and AZFb+c deletions showed oligospermia and spermatogenic failure by testicular biopsy.

CONCLUSIONBreakpoint localization of deletions in AZF regions may help elucidating the mechanisms of microdeletions, and analysis of the characteristics and quantity of deleted genes essential for normal spermatogenesis may evaluate the association of phenotype with spermatogenic failure.

Chromosome Deletion ; Chromosomes, Human, Y ; genetics ; Deleted in Azoospermia 1 Protein ; Gene Dosage ; Genetic Loci ; Humans ; Male ; Oligospermia ; genetics ; physiopathology ; RNA-Binding Proteins ; genetics ; Seminal Plasma Proteins ; genetics ; Spermatogenesis

Objective To clone and express human autoantigen Sm B'in methylotrophie yeast Pichia Pagtoris.Methods The gene Sm B' was cloned bv PCR The PCR product wag inserted into the vector pPIC9k.The recombinant plasmid pPIC9k.Sm B' was transformed into yeast Sm D1168 by electroporation.The positive clones were screened in MD plates.The high copy number transformants were rapidly selected by using G418 and were induced by methan01.Supematants after induction were analyzed by SDS-PAGE and western blot.Sera collected from thirty patients with SLE.thirty patients with mixed connective tissue disease(MCTD)and thirty healthy volunteers were detected by immunodot and immunoblot.Results The PCR product wag about 700 bD in size which Wag in accordance with predicted 657 bp.The pPIC9k-Sm B'showed the same seqencing result with GenBank's report and restriction enzyme analysis confirmed our prediction.The pPIC9k-Sm B' positive clone produced a 32 000 protein which had natural immunogenicitv of human autoantigen Sm B'by SDS-PAGE and western blot.The positive rate of immunodot and IBT were 46.7%(42/90)and 51.1%(46/90),respectively.The agreement between immunodot and IBT was very close(Kappa value=0.911 2,P＜0.01).Conclusion Successfully cloning and expression of human autoantigen Sm B' in methylotmphic yeast Pichia Pagtoris hid a foundation for further research work.

Objective To clone,express and identify the nuclear antigen Sm B′in E. coli to establish a new assay for detecting autoanti-body to Sm B′. Methods A full length cDNA of Sm B′was cloned from cell line HL-60 by RT-PCR. The PCR product was TA cloned and sequenced and inserted into the vector pGEX-5T. The recombinant plasmid was transformed into E. coli BL21. The positive clones were identified by restricted enzymes and induced by IPTG. The expression product was analyzed by SDS-PAGE and Western blot. Results The PCR product was about 700 bp in size which was in accordance with predicted 657 bp and sequencing result showed consistent with the sequence in GenBank. The pGEX-5T-Sm B′positive clone produced a 51 000 kD of fusion protein which was immunoreac-tive with anti-Sin B′confirmed by SDS-PAGE and Western blot. Conclusion The successful cloning and expression of nuclear antigen Sm B′laid a foundation for further research work.

Objective To establish a new assay for detecting autoantibody Jo-1, cloning and expressing human autoantigen Jo-1 in E.coli.Methods A full length cDNA of human autoantigen Jo-1 was cloned from cell line HL-60 by RT-PCR. The PCR product was TA cloned, sequenced and inserted into the carrier pGEX-5T.The recombinant plasmid was transformed into E.coli BL-21. The positive clones were identified by restricted enzymes and induced by IPTG. The expression product was analyzed by SDS-PAGE and Western blot.Results The PCR product was about 1 500 bp in size which was in accordance with predicted 1 526 bp and sequencing result showed the same with GenBank′s report.The pGEX-5T- Jo-1 positive clone produced a 75 000 fusion protein which had natural immunogenicity of human autoantigen Jo-1 by SDS-PAGE and Western blot.Conclusion Successfully cloning and expression of human autoantigen Jo-1 laid a foundation for further research work.