Child ; Humans ; Urolithiasis ; diagnosis ; therapy

Objective To investigate the association between ankle-brachial index (ABI) and serum uric acid (SUA) level in patients at high risk of cardiovascular diseases .Methods Three hundred and sixty-three patients with hypertension and diabetes mellitus (DM ) were divided into hyper-tension group (n=189) ,hypertension plus DM group (n=123) ,and DM group (n= 51) .Their ABI was assayed ,SUA level was measured ,and other risk factors for cardiovascular diseases were detected such as BMI ,systolic and diastolic pressure ,serum levels of TG ,TC ,HDL-C ,LDL-C and HbA1c .Association of SUA level and ABI with other clinical indexes was analyzed by partial cor-relation analysis .Results The systolic and diastolic pressure ,serum levels of TG ,HDL-C and HbA1c were significantly different in 3 groups (P<0 .05) .The ABI was significantly higher in hypertension group and DM group than in hypertension plus DM group ,and negatively related with SUA level after adjustment for hypertension and DM history ,age ,gender ,BMI ,serum levels of TG ,TC ,HDL-C ,LDL-C and HbA1c ,systolic and diastolic pressure (r= -0 .235 ,P=0 .012) . Conclusion ABI is associated with SUA level in patients at high risk of cardiovascular diseases .

Objective:To isolate the genes induced by Ty21a. Methods: Prepare the intestinal cells of Balb/C mouse with and without Ty21a immunization, extract the polyA+ RNA, synthesize the dscDNA by using reverse transcription-PCR,get the differentially expressed genes by suppression subtractive hybridization(SSH).Results:Seven genes were novel genes revealed by GenBank searching whose expression were probably induced by Ty21a were isolated by SSH and cDNA microarray. The full length cDNA sequence of three genes are now obtaining through RACE-PCR. Conclusion: SSH is an effective method for isolating the differentiatlly expressed genes; High throughput cDNA microanay is a credibility method to profile changes in gene expression; Ty21a can induce the expression of some new genes related to immune.

Child ; Child, Preschool ; Female ; Fluoroacetates ; poisoning ; Hemoperfusion ; Humans ; Infant ; Male

Objective:To study the effect of invigorating the kidney and spleen complex prescription on deltamethrin intoxicated pregnant rats. Methods:Pregnant rats were divided into 5 groups. Except the blank group,other groups were orally fed 1/20LD50(6.93mg/kg)DM daily from day 1 to 15 when proved pregrancy. 4 Hours later,rats in model group were given physiological saline,other 3 groups were given high/ median /low dose of Zhuyun Formula. Half pregnant rats were killed on D15. The rest was kept until labour. The abortion rate,survival rate,delivery condition,the level of estradiol,progestogen were observed. Results:With respect to abortion rate,model group showed statistical signifi cance when compared with other groups. Model group also showed low progesterone level. With the treatment Zhuyun Ⅲ,it had desirable effect in decreasing abortion rate,and increasing the level of progesterone. The labour time of all groups was within the normal range. Conclusion:DM had toxicity on reproduction,it could lead to abortion which was related to endocrine function of pregnant rats. Zhuyun Ⅲ could regulate the above condition and relief DM toxicity.

Objective To investigate the mutations of CLCNKB gene in a family with classic Bartter syndrome. Methods Genetic DNA was extracted from peripheral blood leucocytes of family members.The coding exons and intron exon junctions of CLCNKB gene were amplyfied by PCR and sequenced directly.Fifty unrelated healthy subjects were selected to exclude the possibility of polymorphism. Results A heterozygous(missense)mutation(482T>G,L161R)was detected in the exon 4 of patients.The hetemzygous mutation(L161R)was found in the mother,while no mutation was found in the father of this family.L161R had not been reported and was a novel mutation when referring to literatures and human genomic database home and abroad.Conclusion A new CLCNKB gene mutation(L161R)is identified for the first time.

Aim To observe the changes of diaphragm contractility and cytoskeletal proteins titin,nebulin and sarcoplasmic reticulum Ca~(2+)-ATPase gene expressions in adriamycin-induced cytotoxicity in rats.Methods The animal models of diaphragm damage were duplicated by injecting adriamycin into abdominal cavity one time.Forty male sprague-dawley rats were randomly divided into four groups(n=10):Three groups received adriamycin in low,middle and high dosage(10,20 and 40 mg·kg~(-1))respectively.Meanwhile,the normal saline was given to rats in control groups.Three days later,these rats were killed,and the diaphragm was removed by thoracotomy.The diaphragm contractility was assessed in isolated diaphragm strips perfusion by these paramemters including peak twitch tension(Pt),maximum tetanic tension(Po),time to peak contraction(CT),half relaxaion time(1/2RT),maximal rates of contraction(+dt/dt_(max))and maximal rates of relaxation(-dt/dt_(max)).The expressions of titin,nebulin and sarcoplasmic reticulum Ca~(2+)-ATPase(SERCA)at mRNA level were detected by RT-PCR analysis.Results In contrast to those in control group,Po,Pt,±dt/dt_(max) in the adriamycin group were lower(P<0.01);CT,1/2RT in the adriamycin group increased significantly(P<0.01).The levels of titin,nebulin and SERCA gene expressions in middle-dose group were lower than those in control group(P<0.01).Conclusions The mRNA levels of titin,nebulin and SERCA of diaphragm are down-regulated in adriamycin-induced cytotoxicity in rats.It may be associated with the decline of diaphragm contractility.

Botulinum Toxins, Type A ; administration & dosage ; adverse effects ; therapeutic use ; Cerebral Palsy ; drug therapy ; Child ; Child, Preschool ; Dose-Response Relationship, Drug ; Female ; Humans ; Male

BACKGROUND:In the past, the culture and differentiation of bone marrow mesenchymal stem celsin vitrowere mostly reported in the adult or animal rather than in children.
OBJECTIVE: To explore the ability of bone marrow mesenchymal stem cels from children differentiating into neural stem cels and nerve cels.
METHODS: Bone marrow mesenchymal stem cels from children were isolated and cultured, and passage 12 cels were cultured in the pre-induction medium (DMEM culture medium containing 10% fetal bovine serum and 1 mmol/L β-mercapto ethanol) and induction medium (DMEM containing 2% dimethyl sulfoxide and 150 μmol/L butylated hydroxyanisole). Expression of nestin and β-tublin III was detected using immunocytochemistry method at 30 minutes and 7 days after induction, while RT-PCR was used to detect nestin mRNA expression at 0, 5.5, 6 days after induction.
RESULTS AND CONCLUSION: After combined induction, the cels shrank from round shape to tapered, polygonal or oval shape, and cel processes extended gradualy and became filament-like shape. Interconnected cels formed a network at 6 days after combined induction. The expression of nestin antigen was positive at 30 minutes after induction, while the expression of β-tublin was positive at 7 days. RT-PCR findings showed that positive expression of nestin mRNA was detected at 5.5 hours of induction, and then disappeared at 6 days. These findings show that the combined use of dimethyl sulfoxide and butylated hydroxyanisole can induce bone marrow mesenchymal stem cels from children to differentiate into neural stem cels and nerve cels in vitro.

Objective:To observe the effects of lactoferrin(LF)on the proliferation,migration and osteogenic differentiation of human periodontal ligament cells(HPDLCs)in vitro.Methods:HPDLCs were cultured and identified.The proliferation and migration of HP-DLCs cultured with 0,10 and 20 μg/ml lactoferrin respectively were tested by MTT assay,Transwell assay and scratch test.The os-teogenic differentiation of the cells was evaluated using alizarin red staining and real-time PCR.Results:Lactoferrin at 10 and 20μg/ml increased the proliferation(P <0.05),increased the quantities of mineralized nodules and the expression of alkaline phospha-tase(ALP),osteocalcin(OCN)and osteopontin(OPN)(P <0.05).Conclusion:Lactoferrin promotes the proliferation,migration and osteogenic differentiation of HPDLCs.