Partial left ventriculectomy(PLV),also named as left ventricular volume reduction or the Batista procedure,is gradually used as a new alternative method to treat end-stage heart disease.This article summarizes the progress of the mechanism of partial left ventriculectomy with rapid left ventricle reshaping and hemodynamics change and patho-physiological effect etc.

Objective To investigate the value of intraoperative neuromonitoring(IONM) for preventing recurrent laryngeal nerve(RLN) injury in thyroid surgery.Methods 1087 consecutive patients undergoing thyroid surgery at Wuhan Central Hospital from Oct 2010 to Dec 2012 were evaluated.277 cases(the study group) underwent thyroidectomy with RLN identification by naked eye plus IONM.810 cases(the control group)underwent thyroidectomy with RLN identification by naked eye only.Results In the control group,733 RLNs (90.49％,733/810)were successfully identified and 77 RLNs were failed to be identified.In the study group,all the 277 RLNs(100％,277/277)were successfully identified.28 cases had postoperative temporal RLN injury,among whom 26 cases were in the control group and 2 cases were in the study group.18 cases in the control group and 2 cases in the study group recovered in 2 weeks after surgery.The rest recovered in 2 months after surgery.RLN injury rate was significantly lower in the study group than in the control group.There was no significant difference in RLN injury for low-risk surgical patients between the 2 groups; however,the study group had advantages in RLN injury than the control group for high-risk patients.Conclusions IONM in thyroid surgery can improve the recognition rate of RLN during thyroidectomy.IONM can significantly reduce the incidence of RLN injury,especially in high-risk surgery.

Objective To investigate the developmental characters of neural stem cells(NSCs) in occipital of cortex from human fetal brain at different age.Methods Ninety cases of embryoes at gestational age 16-32 weeks and by induction of labor with water bag were collected for determining distribution,shapes,growth modes and the number of NSCs in the occipital of cortex with immunohisto- chemical method under light microscope.Results It was noted that NSCs existed in the occipital of cortex from human fetal brain at different ages.NSCs mainly distributed in layers of cone cells and inner granule cells.NSCs existed in the occipital of cortex of different fetal age included middling round cells,NSCs had enations from 0 to 1.Nucli were larger than plasm.Each NSC had nucleoli from 2-4 and rarefaction chromatin.Most of NSCs distributed in three growth modes including crowd,cluster and clone,occasionally with a single growth mode among other nerve cells.There were no differences including distribution,shapes,growth modes and the number of NSCs in the occipital of cortex between groups,but,NSCs gradually decreased with increasing of age.Conclusion NSCs exists in the occipital of cortex from different gestational age,and the number of NSCs decreases with increasing of age.

Abstract: Objective　To detect the antibody levels of hantavirus in serum samples from patients suspected with hemorrhagic fever with renal syndrome (HFRS) in Heilongjiang Province from 2019 to 2021, and to provide scientific basis for the prevention and control of disease. Methods　Enzyme-linked immunosorbent assays (ELISA) were used to detect the IgM antibodies to hantavirus in serum samples collected from suspected patients with HFRS in the acute-phase, and IgM and IgG antibody in convalescent-phase serum samples. The positive rate of IgM antibody in acute-phase serum samples of patients in different years was analyzed with χ2 test by SPSS 19.0, and the data were sorted out and analyzed about patients' gender, occupation, age, date of onset and interval from onset to initial diagnosis by EpiData 3.1, Excel 2003 software. Results　A total of 351 acute-phase serum samples and 208 convalescent-phase serum samples were detected in patients suspected with HFRS, respectively. There were 317 positive IgM antibodies of serum samples in the acute stage, with the positive rate of 90.31%. There was no significant difference in the positive rate of IgM antibodies in the acute stage between different years (χ2=0.895, P=0.639). T The IgM antibodies and IgG antibodies were positive in 32 (15.39%) and 28 (13.46%) of the convalescent-phase serum samples, respectively. Moreover, 148 patients (71.15%) were double-positive for IgM and IgG antibodies at the convalescent stage. The ratio of male to female patients was 4.56∶1, for which male patients were much more than female patients. Occupation was dominated by farmers (253 cases, 79.81%), followed by workers (19 cases, 5.99%) and the unemployed (17 cases, 5.36%), respectively. The age of patients ranged from 10 to 88 years old, with a median age of 49 years old. Most of the patients were in the age group from 30 years old to 60 years old (209 cases, 65.93%), among which the age group from 40 years old to 50 years old (86 cases, 27.13%) had the highest proportion, and the age group from 60 years old to 90 years old had a proportion of 20.18% (19 cases). May and November were the peak periods of HFRS in Heilongjiang Province. The median interval between onset and initial diagnosis was 4 days. Conclusions　There is a gap of about 10% between the clinical diagnosis of HFRS cases and the confirmed cases detected by laboratory in Heilongjiang Province from 2019 to 2021. The virus-specific detection results are important for confirming the diagnosis of local patients with HFRS.

To investigate the clinical efficacy and safety of phototherapeutic keratectomy ( PTK ) in the treatment of bullous keratopathy ( BK) .METHODS: A retrospective analysis of 60 cases ( 60 eyes) of BK patients from Department of Ophthalmology in our hospital October 2011 to July 2014 was undergone. Clinical data of all patients with treatment of PTK were analyzed. Best corrected visual acuity ( BCVA ) , corneal curvature, corneal astigmatism, corneal thickness and corneal endothelial cell density ( ECD ) , postoperative complications before and after surgery were compared. RESULTS: BCVA, corneal curvature, corneal astigmatism of patients before surgery were 0. 05 ± 0. 01 and 37. 02±5. 38, 1. 08±0. 67D, which were significantly less than those of postoperative ( respectively 0. 45 ± 0. 13 and 46. 27 ± 7. 02, 1. 92 ± 0. 73D ), the differences were statistically significant (all P<0. 05). Corneal thickness of patients was 492. 33 ± 18. 27μm before surgery, which was higher than that after surgery 377.27±22.49μm (P<0.05). The difference of visual acuity before and after surgery was statistically significant in this group (P<0. 05). During the follow-up period of 6mo, no recurrence of the original corneal lesions, only 2 cases of postoperative slight haze, it was completely dissipated after given the hormone eye drops.CONCLUSlON: Excimer laser technology has high safety in the treatment of bullous keratopathy, it should be promoted in clinical practice.

This paper introduces the technology of recognizing CD4 cell by a computer, which successfully segments the objects from the background through image processing and analyses the four features including geometric features, optical density, color and texture features. The method based on Principal Component Analysis algorithm is used for feature extraction, and a Back Propagation neural network classifier is constructed, from which the CD4 cell can be well recognized. CD4 cell, image segmentation, feature analysis, Principal Component Analysis (PCA), Back Propagation (BP) neural network classifier is constructed, from which the CD4 cell can be well recognized.
Algorithms ; CD4-Positive T-Lymphocytes ; cytology ; Image Processing, Computer-Assisted ; Microscopy ; methods ; Neural Networks (Computer) ; Principal Component Analysis

Animals ; Astragalus membranaceus ; Endotoxemia ; drug therapy ; metabolism ; Interferon-gamma ; analysis ; Interleukin-4 ; analysis ; Male ; Mice ; Phytotherapy ; Plant Extracts ; therapeutic use ; Th1 Cells ; drug effects ; metabolism ; Th2 Cells ; drug effects ; metabolism

Objective To explore the relationship between the rs1611115 and rs739398 polymorphism of dopamine-β-hydroxy-lase genes and violent behavior in adolescents .Methods Adolescent male offenders were divided into violent group (107 samples) and nonviolent group (107 samples) .Besides ,107 male adolescents in vocational school were served as normal controls .The rs1611115 and rs739398 polymorphisms of DβH gene were measured by used SNaPshot SNP technology in 321 samples .Chi-square test was used to compare the distribution difference between three groups of each gene type and the allele frequency distribution . Results There was statistically significant difference among violent group ,nonviolent group and normal control group in the geno-type and allele frequencies of DβH gene rs1611115 polymorphism(P<0 .05) ,but there was no statistically significant difference be-tween violent group and nonviolent group(P>0 .05) .There was no statistically significant difference among violent group ,nonvio-lent group and normal control group in the genotype and allele frequencies of rs739398 polymorphism(P>0 .05) .Conclusion No association was found between the rs739398 polymorphism of DβH gene and adolescents with violent behavior .But the rs1611115 polymorphism of DβH gene was related to adolescent criminals with violent and nonviolent behavior .

Objective To explore the relationship between the rs3785143 polymorphism of norepinephrine transporter gene,and investigate the influence of interaction effect between NET gene polymorphism and childhood abuse in adolescents with violent behavior.Methods Adolescent male offenders were divided into violent group (124 samples) and nonviolent group (120 samples).The rs3785143 polymorphisms of NET gene were measured by used SNaPshot SNP technology in 244 samples.Chi-square test was used to compare the distribution difference between three groups of each gene type and the allele frequency distribution.Results ①There was no statistically significant difference among violent group and nonviolent group in the genotype and allele frequencies of rs3785143 polymorphism (x2=0.753,0.022; all P＞0.05).②64.5％ violent adolescents have experience of childhood abuse,and 35.5％ had no history of abuse ;48.3％ nonviolent adolescents have experience of childhood abuse,and 51.7％ had no history of abuse(x2=6.50,P＜0.05).③There was not significant interaction between NET gene polymorphism and childhood abuse((OR=0.386,P＞0.05) 95％ CI (0.457-4.739)).Conclusions The NET gene polymorphism is not associated with violent behavior in male adolescents,and there was not interaction between NET gene polymorphism and childhood abuse.

Objective To assess the feasibility,safety and efficacy of endoscopic papillectomy (EP) for tumors at the ampulla of Vater (AV).Methods A total of 15 patients with tumor at AV that were indicated for EP were included in this prospective study.Their clinical profiles,procedural parameters and outcome were evaluated.Results All patients underwent EP procedure successfully.Four patients who were diagnosed as having chronic inflammation in the reference endoscopy were confirmed as having adenoma after EP.Out of the 11 patients who were previously diagnosed as andenoma on biopsy,2 of low differentiated adenocarcinoma,1 of well differentiated adenocarcinoma and 1 malignant transformation were pathologically confirmed after EP.Stents were implanted in 8 patients with dilated pancreatic and/or common bile duct.Except for 2 cases of melena and 2 transient elevated level of blood amylase after EP,no other major complications occurred.Three patients,including 1 case of low-differentiated adenocarcinoma,1 case of malignant transformation and 1 case of lesion residual,were referred to surgery,another patient with low-differentiated adenocarcinoma declined any additional intervention because of old age.In the remaining 11 cases ( 11/15,73.3％ ) including one well differentiated adenocarcinoma,no recurrence was observed during a follow-up period of 23.4 (5 to 47) months.Conclusion EP is a minimal invasive,safe and effective treatment for tumors at AV,which also can provide an accurate staging of the lesion.