Laboratory animal science teaching has become an indispensable part of medical education.This paper summarized teaching characteristics of laboratory animal science at different levels, including the curriculum setting background, curriculum arrangement as well as assessment methods, in order to provide some references for the teaching staff of laboratory animal science.

Objective To compare three ultrasonic methods of transabdominal , transvaginal , and transperineal ultrasonogra-phy for the cervical length ( CL) in predicting the preterm birth .Methods The pregnancy women with threatened preterm labor in Hunan Provincial Hospital of Maternal and Child Health from January , 2012 to December, 2013 were chosen to measure the cervical length by sonography , and were randomly divided into three guoups ( 280 pregnancy women in each group ) , including Group Ⅰ( transabdominal ) , groupⅡ( transvaginal ) , and group Ⅲ ( transperineal ) .The cervical length and the pregnancy outcome were fol-lowed up.Results The acceptance rate of group Ⅱ(81.8%=229/280) was significantly lower than that of groupⅠ(100%=280/280)and group Ⅲ(99.3%=278/280)( P <0.05).The realization ratio of the cervix in group Ⅰ(85.0%=238/280) was signifi-cantly lower than that of group Ⅱ(98.7%=226/229) and group Ⅲ (98.2%=273/278) ( P <0.05).The preterm birth rate of 48.6%(18/37) in groupⅠ, 37.8%(28/74) in groupⅡ, and 37.1%(33/89) in groupⅢin the pregnancy women with CL <3 cm was significantly higher than the corresponding preterm birth rate of 17.9%(36/201) in groupⅠ, 13.2%(20/152)in groupⅡ, and 13.6% (25/184) in groupⅢin the pregnancy women with CL≥3 cm.The sensitivity of groupⅠ(33.3%=18/54) was significantly lower than that of group Ⅱ(58.3%=28/48) and group Ⅲ(56.9%=33/58).Conclusions The cervical length measured by ultra-sound is valuable in predicting preterm birth among the pregnancy women with threatened preterm birth .The transperineal ultrasonogra-phy is superior to transabdominal and transvaginal ultrasonography in predicting preterm birth , and is worth being popularized .

Objective To explore the effects of fat emulsion made of fish oil for total parenteml nutrition on patients with systemic inflammatory response syndrome(SIRS).Methos Forty patients with SIRS in the intensive care unit(ICU),Liaocheng People's Hospital,from January to June 2007 were randomly divided into conventional total parenteral nutrition(TPN)group(group A,n=20)and fish oil emulsion+TIN group(group B,n=20).Patients of both groups received equal amount of nitrogen and calories.The energy give.Was 20 kcal/(kg·d),and nitrogen 0.2 g/(kg·d)for 7 days and the fish oil emulsion given was 1-2 ml/(kg·d)(Commoditieds:Omegaven,No.UK 1580,Wuxi,China SINO-SWEO Pharmaceutical CORP.Ltd.).The levels of serurn TNF-α,IL-1 and IL-6 were checked before TPN and 1 d,3 d and 7 d after TPN.The davs of ICU stay,the incidence of MODS and the mortality within 28 aays of two groups were also recorded.Data were analyzed wotj inde pent-saraples t test and paired-sarnples t test using the SPSS 10.34 software.Results There wsa no significant difference in APACHF-Ⅱ score between two groups of patients.Compared with group A,the levels of serum TNF-α,IL-1 and IL-6 in group B decreased markedly at different intervals(P<0.05,P<0.01).The duration of ICU slay shortened obviously in group B than that in group A[(11.5±2.4)days vs.(15.8±2.3)days,P<0.05].Conclusions The fat emulsion made of fish oil has protective effects on patients with SIRS by the mechanism of decrease in the levek of Serum TNF-α,IL-1 and IL-6,and thereby reduees the incidence of MODS,shortens the duration of ICU stay,increasing the survival rote of seriously ill patients.

Objectives To construct reference range of fetal optic tract mean diameter and to report the measured optic tract mean diameter in fetuses with agenesis of the septum pellucidum (SP).Methods Three-dimensional volumes of the optic chiasm were acquired in 254 normal fetuses during routine sonographic examination at 21 ～ 40 weeks' gestation and the diameters of posterior left and right optic tracts were measured offline.A polynomial regression approach was used to calculate reference charts for the fetal optic tract mean diameter.In addition,16 three-dimensional volumes were acquired in fetuses with SP agenesis for offline measurement of optic tract diameter.The complete follow-up data were obtained in 7 of these 16 cases.Results In normal fetuses,the optic tract diameter increased linearly throughout gestation.Normal charts and equations were constructed.Among 7 fetuses with SP agenesis and complete follow-up,one had postnatal normal vision,two had hypoplastic optic tract,and four underwent termination of pregnancy.Three cases of normal childbirth were tested after the baby was born as a bundle of apparent dysplasia,including 1 case of neonatal characterized by lack of vision at the one year old and 2 cases of impaired vision.Four cases of termination of pregnancy included 1 case with tracking pathological confirmation of optic nerve hypoplasia,and the other 3 cases without tracking the pathological results.Conclusions We present new reference charts for fetal optic tract mean diameter.In fetuses with agenesis of the SP,sonography of the optic tract might be a useful tool to assess its development and may help prenatal counseling.

Objective To investigate the nursing of replantation methods of sea-water soaked rotated avulsion amputated fingers.Methods There were 8 cases (16 fingers) with sea-water soaked rotated avulsion amputated fingers.5 cases were replanted by synchronic replantation method,the other 3 cases were replanted by traditional replantation method.We adopted complete debridement and high quality vascular anastomosis during the operation,and give hyperbaric oxygen therapy and anticoagulant treatment post-operation.Results There were 15 survival fingers in 16 replanted fingers.The survival rate was 93.75％.After follow-up for three months to two years,the total good rate was 87.5％.No wound infection and nonunion of fracture occurred.The outline of the fingers was satisfying and patients felt well.The twopoint discrimination was 3～6 mm after 3～24 months follow-up.Conclusions The injury of sea-water soaked rotated avulsion amputated fingers is complicated and the replantation operation is difficult.but if we can adopt individual measure according to the actual circumstance,it is possible that the sea-water soaked rotated avulsion amputated fingers can survive.

OBJECTIVE To study the gene chip joint pyrosequencing technology in the newborn genetic deafness gene mutation screening, and provide a theoretical basis for the early diagnosis and prevention of genetic deafness. METHODS 2000 Neonatal EDTA umbilical cord blood was collected and genomic DNA (gDNA) was extracted. Microarray chip was used to detect four deafness gene at 9 mutation sites. And the positive result of gene chip detection was verified by pyrosequencing.RESULTS Among the GJB2 mutations, there were 1 case of 35delG mutation type, 3 cases of 176 del16 mutation type, 57 cases of 235del C mutation type, 9 cases of 299 del AT mutation type, 6 cases of GJB3 gene 538C>T mutation type. There were 5 cases of 1555A>G mutations and 1 case of 1494C>T mutations in mitochondrial 12S rRNA. There were 6 cases of 2168A>G mutation type and 23 cases of IVS7-2A>G mutations in SLC26A4. 103 cases of newborns carry the mutated gene in 2,000, the gene mutation rate is 5.15%. CONCLUSION All the four genes mutation at nine mutation sites are found in newborns with family history of non-hereditary deafness, and GJB2 gene mutation is common. The screening of genetic deafness in newborns is very important for early diagnosis and prevention of hereditary hearing loss. In particular, the diagnosis of mitochondrial 12S rRNA gene mutation can prevent the occurrence of deafness caused by drug use, for the genetic mutation of these carriers' health is of great significance.

Objective To investigate efficient diagnosis and treatment of 17α-hydroxylase (17OHD) deficiency by summarizing clinical characteristics of those patients.Methods From January 1983 to January 2010,48 cases with 17OHD in Peking Union Medical College Hospital were studied retrospectively.Results Among 48 patients with 17OHD,karyotype analysis showed,12 cases with 46,XX and 36 cases with 46,XY.The 46,XX karyotype and 46,XY karyotype with complete 17OHD had typical clinical presentation of amenorrhea [ 12/12,100％ ( 36/36 ) ],no typical spontaneous puberty [ 12/12,13.9％ (5/36) ],Hypertension [ 11/12,100％ ( 36/36 ) ],hypokalemia [ K +:( 2.6 ± 0.7 ),( 2.8 ± 0.7 )mmol/L],hypergonadotropin [ follicle-stimulatinghormone ( FSH ):( 51 ± 35 ),( 79 ± 46 ) U/L,luteinizing hormone( LH ):( 27 ± 14 ),(49 ± 37 ) U/L ],impaired production of sex hormones [ testosterone(T):0.003,0.005 nmol/L; estradiol ( E2 ):26.86,10.64 pmol/L ],hyper-progesterone [ (P):( 32 ± 15 ),( 29 ± 23) nmol/L],impaired production of 17α-hydroxyprogesterone ( 17α-OHP ) [ ( 2.5 ± 1.1 ),( 2.4 ±1.7) nmol/L],ACTH hypersecreation (91.8,114.0 pmol/L).ACTH stimulating test did not elevated in 17α-OHP and cortisol.Conclusion When patients with elevated basal serum levels of progesterone higher than that of ovulation period in addition to clinical symptoms,examination about 17OHD should be warranted.

Objective To identify the potential neoplastic risk in gonadal development abnormality with Y chromosome.Methods Inquiries about the illness history were made.Lymphocyte chromosoreal karyotype of peripheral blood Was analyzed.Sex determining region Y gene and relative steroids and enzymes were detected.Gonadal site was examined through medical imaging.Conadal excision Was performed by laparotomy or laparoscopy.Pathological examinations were done on all of the specimens.Results Among 41 cases of androgen insensitive syndrome,spermatogenie cell neoplasm occurred in 1 patient,sertoli cell tumor in 2,and interstitial cell hyperplasia in 5.Among 14 cases of 17a.hydroxylase deficiency(XY)syndrome,one was sertoli eell tumor,and one Was sertoli cell hyperplasia.In 4 cases of XY pure gonadal dysgenesis.one was gonadoblastoma with dysgerminomm One of 16 cases of X0/XY gonadal dysgenesis Was spermatogenic cell neoplasm with agenda cell tumor.Four cases of testes degeneration were all with dysgenetic testes.All of the gonadoblastoma and germ-cell tumor were located in the pelvis.Tumors occurred mostly during 15 years of age to 32 years.Conclusions The gonads of XY pure gonadal dysgenesis has high risks of gonadoblastoma and germ-cell tumor.The older the onset age after puberty. the higher the malignancy risk is.Once diagnosed,bilateral gonads should be excised as soon as possible.

Objective To study the changes of resting-state brain activity in knee osteoarthritis(KOA)patients with chronic pain.Methods The data of 21 KOA patients (KOA group) and 21 healthy controls (HC group) who underwent standard resting-state fMRI scan were analyzed with regional homogeneity (ReHo) method to observe the changes in the patients in contrast to the controls.Results Compared to HC group,patients of the KOA group showed ReHo changes in bilateral frontal lobe,bilateral parietal lobe,bilateral temporal lobe,bilateral cerebellum,limbic system and default-mode network.Conclusion Patients with chronic pain demonstrate abnormal neuron activities in the brain regions, and control loops not only related with pain but also related with emotive function disorder and cognitive impairment.

Objective To observe the effect of Bupleurum Liver-Coursing Powder on the neuronal apoptosis and autophage in hippocampus of depression model rats, and to explore the mechanism of its anti-depression effect. Methods 60 male SD rats were randomly divided into control group,model group and drug intervention group (n=20).The depression model was produced by giving the rats chronic unpredicted mild stress.The rats in model group and control group received the same volume of normal saline,and the rats in drug intervention group received Bupleurum Liver-Coursing Powder solution on the basis of model.The depressional behavior was examined using sucrose preference test,tail-suspension test and Morris water maze.Flow cytometry was employed for the detection and quantification of the apoptotic cells in the hippcampus. The expressions of LC-3 and Beclin 1 were detected using Western blotting method. Results The pencertages of sucrose preference of the rats in model group and drug intervention group were significantly lower, while the tail-suspension immobility time and the excape latency time were higher than those in control group (P<0.05);the apoptotic rates of cells,the ratios of LC3-Ⅱ/LC3-Ⅰand the expression levels of Beclin-1 were higher than those in control group (P<0.05).Compared with model group,the percentage of sucrose preference of the rats in drug intervention group was increased (P<0.05),the tail-suspension immobility time and the excape latency time were decreased (P<0.05),and the apoptotic rate of cells,the ratio of LC3-Ⅱ/LC3-Ⅰand the expression level were also decreased (P<0.05).Conclusion Bupleurum Liver-Coursing Powder has significant anti-depression effect, which may be related to inhibiting the apoptosis and degrading the autophage of neuros.