Objective To investigate the difference of serum thymidine kinase 1(TK1) levels of young and middle-aged people in high humidity and high altitude area .Methods Serum level of TK1 was measured with the enhanced chemiluminescence method in 128 native young and middle-aged people .Results Serum TK1 was (1 .784 2 ± 0 .127 9)pmol/L in the control group and (1 .385 0 ± 0 .078 5)pmol/L in the test group ,the difference between them had statistical significance (P<0 .01) .28 cases in the control group were TK1 positive with the positive rate of 30 .43% ,while 2 cases in the test group were TK1 positive with the posi-tive rate of 5 .56% ,the positive rates had statistical difference between the two groups (P<0 .01) .In the control group ,the TK1 level in females was higher than that in males ,the difference between them showed statistical significance (P<0 .05) .Conclusion Detecting serum TK1 in the population of high humidity and high altitude areas has the active significance for guiding the physical examination and cancer prevention of different age groups under the special environment .

Objective To investigate the carriage of nuc-mecA gene among different altitudes in high humidity district,provid-ed guiding data for prevention of staphylococcus aureus and drug-resistant bacteria,standardizing the usage for antibiotics. Methods The nose swabs were collected in different altitudes:1 000 m,1 200 m and 1 400 m,nuc-mecAgene was confirmed by multi-channel real-time PCR.Results The carrier of nuc gene in the noses were 4.878%,2.899% and 7.143%,in 1 000 m,1 200 m and 1 400 m respectively,and there were no statistical significant among the altitudes (P>0.05).The carrier of mecA gene were 14.634%,31.884% and 41.837% in the 1 000 m,1 200 m and 1 400 m respectively,the difference showed statistical significe (P<0.05).The carrying rate of mecA gene showed statistically significant differences between 1 000 m and 1 200 m (P<0.05),and showed statistically significant differences between 1 000 m and 1 400 m (P<0.01)also.The carrier of nuc-mecA gene were 0%,1.449% and 3.061% in 1 000 m,1 200 m and 1 400 m respectively,there were no statis-tical significant (P>0.05).Conclusion The carrier of mecA gene in noses was increased with the increasing of the altitude. The residents who living at higher altitude should keep the colonization sites of pathogens clean,and needed timely medical when got sick,shouldn’t abuse the antibiotics without authorization.Medical staff should rational use of antibiotic drugs,a-voided overusing of antibiotics and overtreatment.

Objective To investigate the carrying situation of nuc-mec A gene for different departments in the inpatient depart-ment and outpatient department to provide the data for the hospital infection control and reaching the target for preventing nosoco-mial infection and improving the cure rate.Methods The research subjects were divided into 4 groups:osteoarthropathy and hemi-plegia rehabilitation department group(A,44 cases),comprehensive surgical and hematology-oncology department group(B,32 ca-ses),cardiopulmonary department group(C,17 cases)and outpatient department group(D,35 cases).The group A,B and C were the persons in the inpatient department and the group D were the persons in the outpatient department,aged 30-84 years old.Na-sal swab samples were collected and the nuc-mec A gene was detected by the multi-channel real-time PCR.Results No person in the group A,B and C carried nuc gene and 1 case(2.86%)in the group D carried nuc gene.There were no statistically significant differ-ence among 4 groups(P >0.05);the carriers of mecA gene in the group A,B,C and D were 26,17,13 and 10 cases,the carrying rates were 59.10%,53.10%,76.50% and 28.60% respectively,the difference showed statistical significance(P <0.01),but which in the group A,B and C had no statistically significant difference(P >0.05);the carrying rate of nuc-mec A gene showed statistically significant differences between the patients and the medical staff(P <0.05),but which had no statistically significant differences be-tween the patients and the medical staff in each group(P >0.05).Conclusion nuc-mec A gene generally exists in the inpatient de-partment and the carrying rate of nuc-mec A gene is relatively lower,which indicates that the inpatient department needs to pay at-tention to the prevention and treatment of pathogenic bacteria,especially the de-clonization in the hemiplegia rehabilitation and car-diopulmonary departments for avoiding cross-infection among different departments.

Objective To investigate serum level of thymidine kinase 1 (TK1) in middle-aged and elderly people in high humidity area,and explore the high risk age of cell abnormal proliferation and the cause.Methods Serum level of TK1 was measured with enhanced chemiluminescence in 128 cases aged 49-89 years living in the region with an average humidity of 83％.People were divided into control group (n =52,aged 49-59 years) and experimental group (n=76,aged 60 years and over).Results Serum TK1 level was lower in control group than in the experimental group [(1.3894±0.504) pmol/L vs.(1.6518±0.8685) pmol/L,t=2.159,P＜0.05].There was no significant difference in positive rate of TK1 between control and experimental groups (9.62 ％ vs.18.42％,x2 =1.894,P＞0.05).Experimental group was subgrouped into three age groups:aged 60-69 years,70 79 years and 80 89 years group.In the three age groups,serum TK1 levels were (1.7854 ±0.9736) pmol/L,(1.5345 ± 0.7039) pmol/L and (1.4420 ± 0.7354) pmol/L respectively.Compared with control group,serum TK1 level was increased in aged 60-69 years group (t=2.369,P ＜0.05),with no significant difference in serum TK1 level between control group and the other two age groups (all P＞0.05).Meanwhile,there was no significant difference in serum TK1 level among the three age groups (all P＞0.05).Conclusions Serum TK1 concentration is higher in elderly people than in middle-aged people,which shows that the abnormal cell proliferation is higher in elderly people than in middle-aged people.We should pay more attention to physical examination in the elderly people aged 60-69 years.