The mechanism of apnea in premature infants is complicated.Central nervous system undevelopment is the fundamental cause of apnea.Some other factors such as infection and anemia also could lead to apnea.At present,caffeine is used to treat premature apnea,and other drugs and methods also have certain effect.In this paper,we reviews pathogenesis and treatment of premature apnea,in order to provide new understanding of the pathogenesis and prevention of apnea.

[Objective]To explore the surgical plan of lumbar degenerative de novo scoliosis combined with vertebral stenosis(LDDS) and evaluate the surgical efficiency.[Method]From July 2003 to Jan.2007,32 LDDS patients were diagnosed and operated in the author’s hospital.The X-ray,computed tomography and MRI radiological data were measured carefully preoperately which included the Cobb’s angle,vertebral rotational and lateral subluxation degree.All the patients were treated by posterior decompression and pedicle screw internal fixation,and the surgery,fluoroscopic time and bleeding amount were recorded.Patients were administered pre- and postoperatively with clinical outcome surveys of Visual Analogue Pain Score(VAS),Low Back Outcome Score(LBOS).Pre- and postoperative measurements of the Cobb's angle and lumbar lordosis of the involved segments were analyzed.[Result]The surgery time was 4?0.5 hours,the average bleeding amount was 400?30 ml,the fluoroscopic time was 30?5 min.All the patients were followed from 8 months to 4 years,and radiography was proceeded on 8 and 16 months respectively post surgery.Twenty-four cases got good bone fusion,and mean Cobb's angle decreased from 37.2 to 18.4 degrees,mean focal lordosis increased from 13.1 to 16.4 degrees,mean vertebral rotation angle decreased from 14.2 to 9.8 degrees,mean preoperative measures of VAS and LBOS improved from 5.3?2.2 and 24.8?15.6,respectively to 2.2?2.1 and 44.8?18.0 at last follow-up,the Cobb’s angle,lumbar lordosis and the degree of vertebral rotation had significantly difference pre and post surgery(t test,P

Objective To evaluate the accuracy of prediction equations in calculating energy expenditure in elderly patients with type 2 diabetes mellitus (T2DM).Methods In 75 elderly T2DM patients hospitalized in our hospital between August 2014 and August 2015,the resting energy expenditure (REE)measured with indirect calorimetry was compared with those calculated with six different prediction equations.Statistical analysis was performed with paired t-test,the percentage of individual coincidence,and BlandAltman method.Results The measured REE of the patients was (1 513.2 ± 240.6) kcal/d.There were statistically significant differences between the measured REE and the values predicted with Harris-Benedict,Owen,Mifflin,and Liu equations (all P ＜ 0.05),while no statistically significant differences were observed between the measured REE and the values predicted with FAO/WHO/UNU and Schofield equations (both P ＞0.05).FAO/WHO/UNU equation showed the smallest average difference from the measured value (-18.9 kcal/d),but the 95％ consistency limit (-363.3 kcal/d,325.5 kcal/d) was still beyond the acceptable clinical range.Conclusion The accuracy of prediction equations in estimating REE in elderly patients with T2DM may be dissatisfactory.

Objective: To explore the prevalence and co-morbidity in depression disorder among children and adolescents in Chengdu City. Methods: Using a one-phase design, 4S8S children and adolescents in grades 1～10 were assessed with the Strength and Difficulty questionnaire (SDQ) and Development and Well-Being Assessment (DAWBA) . A structured interview with verbatim reports was reviewed by clinicians so that information from parents, teachers, and children were combined in a manner that emulated the clinical process. Results: (1) The rate of depressive disorder was 1.2% , and that in girls was much higher than that in boys after 12 years old (2.56% vs. 1.42%) . (2) The rate of depressive disorder increased with age from 0.10% (6～8 years) to 2.59% (≥ 15 years) . (3) The co-morbidity was 40% . The most common comorbidity diagnosis was anxiety disorders (29.1%) and behavior disorders (25.5%) . Conclusion: The prevalence of depressive disorder among children and adolescents in Chengdu is 1.2%. Gender and age may be the related factors. The co-morbidity is common in children and adolescents with depression disorder.

ObjectiveTo observe the efficacy of maintenance hormonal treatment after response to chemotherapy in advanced breast cancer. Methods8 patients with advanced breast cancer were treated with chemotherapy,maintenance hormonal therapy were given after response to chemotherapy.The efficacy was evaluated every 2 cycles of chemotherapy and 2 months of endocrine therapy according to RECIST standard.Results8 patients received chemotherapy for 2-8 cycles (median 4 cycles). All patients got PR, the duration of chemotherapy was 1-6 months (median 2 months), the time to failure of chemotherapy was 4 months. Until the last follow-up day (31th December 2010), the time to progression was 6-86 months (median 13.5 months).Survival was 6-86 months(median 21.5 months).Seven patients quit the chemotherapy due to severe side effects of hematologic toxicity,fatigue or nausea vomiting.One patient died because of allergy to paclitaxol.Conclusion Maintenance hormonal treatment after patients with metastatic breast cancer response to chemotherapy may prolong the duration of effective therapy and improve the QOL.

[ABSTRACT]AIM:Toinvestigatetheroleofcysteine-rich61(Cyr61/CNN1)inproliferationandmigrationof bone marrow mesenchymal stem cells ( BMSCs ) .METHODS: The lentiviral vector carrying CCN 1 ( Lenti-GFP-CCN1 ) was constructed and then transfected into the rat BMSCs .The cells were divided into non-transfection group , transfection group ( transfected with Lenti-GFP-CCN1 ) and negative control group ( Lenti-GFP ) .The fluorescence intensity of the transfected BMSCs was observed under inverted fluorescence microscope .The effects of CCN1 on the proliferation and mi-gration of BMSCs were detected by MTT assay and scratch wound healing assay .RESULTS:The proliferation of BMSCs transfected with Lenti-GFP CCN1 had no significant difference compared with negative control group and control group .The width/thickness ratio of migrated BMSCs in wound healing was significantly higher in Lenti-GFP-CCN1 group than that in negative control group and control group (P<0.05).CONCLUSION:Exogenous CCN1 promotes the migration of BMSCs.

Objective To discuss spinal fusion effect of lumbar intertransverse process in rabbits by using bone marrow stromal stem cells(MSCs)in conjunction with bone morphogenetic protein(BMP)and freeze-dried demineralized bone matrix(FDBM)as scaffold.Methods To separate and cultivate MSCs in vitro,with FDBM as scaffold,osteogenesis was induced by BMP.Sixty Japan white rabbits were randomly divided into three groups.Group A was MSCs+FDBM+BMP,group B was FDBM,group C was autogenous ilium cancellous bone(AIB).Lumbar intertransverse process was fused in lumbar five to six.Rabbits were killed at 8 weeks after operation.The general observation and imageology were used to assess the fusion condition.To estimate the implantation using DR image.Gray scale analysis of DR image caculated the osteogenic density and acreage.The CT scan and three-dimensional reconstruction was used to observe the fusion configuration of lumbar intertransverse process.Results The fusion mass character in group A and C was hard,the morphology was not regulation.The fusion mass was almost absorbed in group B beside little tissue approach transverse process.There were high density image between intertransverse processes,osteogenic density were nonuniform in group A and C.There were nonunion in group B.Consistent callus were existed between intertransverse process in group A and C.There were not consistent callus in group B.Group A was similar to group C in osteogenesis density and acreage.Group B was the worst.There were cartilage and newly born bone trabecular formation in group A and group C.Between transverse process were mainly fiber tissue in group B.Conclusion MSCs in conjunction with BMP and FDBM has the similar osteogenic capability to the AIB and better osteogenic capability than that of FDBM alone when spinal fusion of lumbar intertransverse process is performed in rabbits.

Objective To investigate the characteristics of co-infection in initial treatment acute leukemia induction chemotherapy.Methods The clinical features of 179 untreated acute leukemia patients with nosocomial infection were analyzed after combined chemotherapy.Results In the 179 patients,151cases achieved complete remission,the complete remission rate was 84.4 ％,82 cases suffered from nosocomial infections,the incidence of infection was 45.8 ％.The sites of infection were oral,anal,lung,as well as primary foci was not clear bacteremia.In 428 specimens,the isolated bacterial colony counted a total of 66,the number of fungal colonies was 9,the bacterial colony was G-bacteria-based.G-bacteria had different degrees of resistance to many antibiotics.Extended-spectrum β-lactamases strains had not been detected in these specimens.Conclusion Acute leukemia patients is easy to co-infection after chemotherapy.Control and prevention of nosocomial infections should run throughout the entire treatment process,application of laminar flow bed helps reduce the newly diagnosed acute leukemia patients with nosocomial infection incidence.

Objective:To understand the urinary iodine external quality control assessment results of county-level iodine deficiency disorders laboratories in Liaoning Province.Methods:The numbers of county-level iodine deficiency disorders laboratories which participated in the national urinary iodine external quality control assessment in Liaoning Province from 2016 to 2019 were 19, 33, 39 and 56, respectively. The urinary iodine external quality control assessment results were statistically analyzed with the Z score method (qualified: │Z│≤2; basically qualified: 2 <│Z│ < 3; unqualified: │Z│≥3). The percentage of laboratories participating in the assessment and the qualified rate were calculated.Results:From 2016 to 2019, the percentage of county-level iodine deficiency disorders laboratories in Liaoning Province that participated in the national urinary iodine external quality control assessment increased year by year, which were 19.79% (19/96), 34.38% (33/96), 40.63% (39/96) and 58.33% (56/96), respectively. The qualified rates were 89.47% (17/19), 84.85% (28/33), 100.00% (39/39) and 100.00% (56/56), respectively.Conclusion:From 2016 to 2019, the percentage and detection capacity of county-level iodine deficiency disorders laboratories in Liaoning Province that participated in the national urinary iodine external quality control assessment have been improved.