Base Sequence ; DNA ; chemistry ; DNA-Directed DNA Polymerase ; metabolism ; Fluorescent Dyes ; chemistry ; Humans ; Molecular Sequence Data ; Nanostructures ; Polymerase Chain Reaction ; methods ; Sequence Analysis, DNA ; methods

Communicable Diseases ; genetics ; Genetic Diseases, Inborn ; genetics ; Genetic Testing ; Genotype ; Genotyping Techniques ; Humans ; Molecular Diagnostic Techniques ; Precision Medicine ; methods ; trends

Objective To study the killing effect of focused ultrasound activated-hematoporphyrin on H-22 and its optimum exposure time.Methods The distribution of hematoporphyrin in H-22 cells was measured by a fluorescence photometer,the uhrastructure changes were evaluated at different time with a scanning electron micro- scope after treatment with focused ultrasound at the frequency of 1.43 MHz and intensity of 1.0 W/cm~2, 2.0 W/cm~2,3.0 W/cm~2,respectively,in combination with HpD.Results The concentration of HpD in the H-22 cells reached its peak after being added to H-22 tumor cells for 45 minutes,which will produce the hest anti-tumor effect when activated by ultrasound.Morphological observation showed that HpD alone had a slight influence on H-22 cells;ULtrasound alone showed an anti-tumor effect on tumor cells,which was dosage-dependent.Ultrasound dia- thermy in combination with HpD has more effective in terms of its antitumor effect when compared with uhrasound dia- thermy alone.Conclusion The killing effect on H-22 tumor cells of sonodynamic treatment was dependent on the intensity of uhrasound and the content of HpD in the cells,as well as on the time of action of both uhrasound and HpD.

A collection of neurons in the upper lumbar spinal cord (lumbar segments 3 and 4) of male rats project to the lower lumbar spinal cord (lumbar segments 5 and 6) and release a gastrin-releasing peptide (GRP) to the somatic and autonomic regions, which are known to regulate male sexual reflexes. The GRP plays some special functions when bound to the specific GRP receptor (GRPR). The spinal GRP system is regulated by androgens. Accumulating evidence shows that GRP plays an important role in rat penile erection and ejaculation, and pharmacological stimulation of GRPRs with a specific agonist can restore penile reflexes and ejaculation in castrated male rats. Therefore, the GRP system appears to be a potential therapeutic target for the treatment of erectile dysfunction or ejaculatory dysfunction. The present paper briefly reviews the recent studies on the role of the spinal GRP system in regulating the sexual function of males.
Androgens ; metabolism ; Animals ; Ejaculation ; physiology ; Gastrin-Releasing Peptide ; metabolism ; physiology ; Male ; Penile Erection ; physiology ; Rats ; Spinal Cord ; metabolism

OBJECTIVETo study possible mechanisms of Shangjuxu (ST37) and the large intestine.

METHODSTotally 40 SD rats were selected. The distension of end colon was used as injured afferent stimulus. Activities of locus coeruleus (LC) neurons were recorded by extracellular microelectrode technique. Shangjuxu (ST37) and Hegu (L14) were needled to observe general features of discharge reactions, distention of colon induced discharge reactions of LC, and its effects on distention of colon induced discharge reactions of LC.

RESULTSDistention of colon could induce incrased discharge of LC neurons by 127.33% ± 45.48%. But needling at Shangjuxu (ST37) and Hegu (L14) could inhibit this injured response by 38.24% ± 7.69% and 21.29% ± 13.16% respectively (all P < 0.01).

CONCLUSIONSNeedling at Shangjuxu (ST37) and afferent signals of colon distension converged and interacted with each other. Needling at Shangjuxu (ST37) could significantly inhibit colon distension induced discharge of LC neurons, which might be one of mechanisms for Shangjuxu (ST37) and the large intestine relationship.

Acupuncture Therapy ; Animals ; Colon ; Intestine, Large ; Locus Coeruleus ; physiology ; Neurons ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo study the association between the functional polymorphism of matrix metalloproteinases (MMPs) and the development of chronic obstructive pulmonary disease (COPD).

METHODS147 COPD patients and 120 healthy smoking controls were selected. Spirometry and chest X-rays had been taken. Questionnaires including sex, age, smoking history, occupational exposure were completed. MMP-9 (-1562 C/T), MMP-1(-1607 1G/2G), MMP-12 (-82 A/G), MMP-12(-357 Asn/ Ser) alleles were determined using PCR-RFLP method. Independent samples T test analysis was carried out to compare patients' age, smoking index, FEV1 /FVC, FEV1 % pred with that of healthy controlled group. The frequencies of genotypes and alleles between groups were analyzed by chi-square tests and multilogistic regression.

RESULTSMMP12 Asn/Asn, CT/AsnAsn were risk factors for smoking-induced COPD. The ORs were 2.361 (95% CI: 1.369-4.017) and 2.433(95% CI: 1.159-5.342) respectively while CC/1G1G/ SerSer seemed to be a protective factor for smoking-induced COPD, with OR as 0.457 and 95% CI as 0.231-0.911.

CONCLUSIONAsn/Asn, CT/AsnAsn might be susceptible genotypes while CC/GG/SerSer might serve as protective genotype.

Aged ; Case-Control Studies ; China ; ethnology ; Ethnic Groups ; genetics ; Female ; Gene Frequency ; Genetic Predisposition to Disease ; Genotype ; Humans ; Logistic Models ; Male ; Matrix Metalloproteinase 1 ; genetics ; Matrix Metalloproteinase 12 ; genetics ; Matrix Metalloproteinase 9 ; genetics ; Polymorphism, Genetic ; Pulmonary Disease, Chronic Obstructive ; genetics

Objective To study the effect of propofol used for outpatient painless enteroscope on cognitive function.Methods One hundred and twenty ASAⅠ~Ⅱpatients scheduled for enteroscope were randomly divided into three groups .Propofol was given 1.5mg/kg(groupⅠ), 2mg /kg (group Ⅱ) or 2.5 mg/kg ( group Ⅲ) intravenously .The enteroscope was inserted when patient showed unconsciousness and no reaction to dictation .SpO2 was kept above 95%96% throughout enteroscope .All patients received neurobehavioral cognitive status examination ( NCSE ) and mini-mental state examination ( MMSE ) test 1 hour before enteroscope examination and 5 minutes,30 minutes, 1 hour after enteroscope examination was o-ver and must finish it within 15 min.The enteroscope examination time , vital signs, analgesia effects and intraoperative awareness were record .Results The ability of memory and calculation at 5 minutes after en-teroscope examination showed a statistical difference between group Ⅰ and ⅡorⅢ( P <0.05),there was no significant difference between in group II and in group Ⅲ( P >0.05 ) , The ability of memory and calcu-lation at 30 minutes, 1 hour after enteroscope examination there was no significant difference in three groups ( P >0.05 ) .In all patients ,the MMSE scores at 5 minutes after enteroscope examination were significant-ly lower than the baseline value ( P <0.05).The MMSE scores at 30 minutes, 1 hour after enteroscope examination in Ⅲgroup patients were significantly lower than the baseline value ( P <0.05 ) .The MMSE scores at 30 minutes, 1 hour after enteroscope examination in I group patients were significantly higher than that inⅡor Ⅲgroup( P <0.05).The MMSE scores at 30 minutes, 1 hour after enteroscope examination there was no significant difference between in group II and in group Ⅲ( P >0.05 ) .The NCSE and MMSE scores at 3hour, 12 hour after enteroscope examination there was no significant difference between in group I and II or Ⅲ( P >0.05).Conclusion Propofol 1.5mg/kg used for painless enteroscope examination has no effect on cognitive function .MMSE and NCSE are suitable for evaluation of outpatient's cognitive func-tion.

The cluster sampling method was used and a retrospective survey on mortality trends of cerebrovascular diseases from 1989 to 2008 was conducted among residents from Erqi District in Zhengzhou city and Xigong District in Luoyang city. The average mortality rate of cerebrovascular diseases in these two districts was 69. 5/100 000 in 1989 to 2008. The standardized mortality rate for men was 118. 67/100 000 in 1989 to 1993, and dropped to 44. 23/100 000 in 2004 to 2008. The standardized mortality rate for women was 68.21/100 000 in 1989 to 1993, and dropped to 30. 2/100 000 in 2004 to 2008. The declining trends of cerebrovascular disease mortality rates might be related to early diagnosis and early treatment of the disease, and the extensive health education and prevention programs.

Adolescent ; Adult ; Female ; Follow-Up Studies ; Humans ; Male ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; drug therapy ; Treatment Outcome ; Young Adult

Objective To evaluate the correlation between lesions of dorsal artery of foot and type 2 diabetes on CDFI. Methods Dorsal artery of foot was examinated in 97 cases with type 2 diabetes and 46 cases without diabetes mellitus. Results There were variable changes in intima-media of dorsal artery of foot in type 2 diabetes patients.And the patients with hyperlipidemia and hypertension showed serious lesions in the dorsal artery of foot and bifurcation of the blood vessel .Simple arteriosclerosis showed not only lesions in intima-media of dorsal artery of foot but also relative mild lesions in bifurcation of the blood vessel. Blood vessel lesion incidence in type 2 diabetes was significantly higher than that of the control group (P<0.01). Conclusions There was a significant correlation between lesions of dorsal artery of foot and type 2 diabetes patient's condition. CDFI is an effective method in evaluating patient's condition, degree and prognosis of type 2 diabetes, and has an important clinical value in early diagnosis, prognosis and treatment.Simple arteriosclerosis showed focal lesions in bifurcation of the blood vessel while dorsal artery of foot showed relatively mild lesions .