14,and/or pH4% of the total time at 24-hour esophageal pH metry were considered to be pathologic acid reflux(GERD).All patients underwent a diagnostic test by receiving lansoprazloe 30mg or placebo twice daily for 7 days through a cross-over design.A symptom reduction of over 75% was considered positive.Results 18(17%) cases of esophagitis were found in 104 patients by endoscopy.83(80%) patients experienced a typical symptom hearburn.87(84%) patients showed pathologic acid reflux detected from pH metry and they were considered to be GERD.85(82%) of 104 patients had positive result in therapeutic test.There was a significant correlation between both the diagnosis obtained from a trial of lansoprazole and the diagnosis obtained from pH metry(P

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.

Objective To compare the serum pepsinogen (PG)in different altitude population.Methods By testing serum PG of people from different altitudes,detected the concentration of serum PG.Results The serum PGI,serum PGII and PGR were respectively 136.89±22.64 μg/L,10.05 ± 5.14 μg/L and 13.07 ± 7.41 in 1 000 m group,and they were 30.87 ± 48.66 μg/L,11.55±2.78 μg/L and 12.89±4.76 in 1 300 m group.There were significant difference in PGI and PGII(P <0.05)except PGR (P >0.05)between the two groups.The corresponding indices in 1500m group (126.64±29.84 μg/L, 12.18±5.99 μg/L and 12.2±14.84,respectively),the serum PGI was decreased obviously compared with those groups (P<0.05),the serum PGII was increased obviously compared with those groups (P < 0.05),No significant difference was found when compared with those groups (P >0.05).The serum PGI was negative correlated with higher altitudes,the ser-um PGII was positively correlated with higher altitudes.Conclusion The study found that the serum PGI content would re-duce with the increase of altitude,and on the contrary the serum PGII would rise with the increase of altitude.The main rea-son that the serum PG change may be influenced by oxygen partial pressure.

Objective To explore the differences of H .pylori infection between residents in different humidity environment. Methods 137 persons from Sanjiang of Wenchuan and 320 persons from Chengdu were examined.Blood samples were ob-tained for serological analysis by dot immunochromatographic assay.Results The infection rate of H .pylori in Wenchuan of Sanjiang residents was 26.28%,and the Chengdu rate was 16.88% (P <0.025),with the significant difference among which,and removed the effection of nation constitution.Conclusion The differences of H .pylori infection rate between res-idents in different humidity environment were existent.High humidity environment maybe one of factors that lead to high H.pylori infection rate.

A NTC thermistor-based wearable body temperature sensor was designed. This paper described the design principles and realization method of the NTC-based body temperature sensor. In this paper the temperature measurement error sources of the body temperature sensor were analyzed in detail. The automatic measurement and calibration method of ADC error was given. The results showed that the measurement accuracy of calibrated body temperature sensor is better than ± 0.04 degrees C. The temperature sensor has high accuracy, small size and low power consumption advantages.
Body Temperature ; Calibration ; Humans ; Monitoring, Physiologic ; methods

BACKGROUND: Mesenchymal stem cells are few in human bone marrow, and their number will decrease with aging or body weakening, so a large amount of amplification is necessary. However, the biological characteristics of human mesenchymal stem cells of each passage remain poorly understood.OBJECTIVE: To analyze and compare the biological characteristics of each passage of bone marrow-derived mesenchymal stem cells (MSCs) so as to provide a basis for clinical demands of tissue engineering.DESIGN,TIME AND SETTING: Cytological observation in vitro. The experiment was performed at the Department of Orthopedics and Central Laboratory, Dongzhimen Hospital, Beijing University of Chinese Medicine from March to October 2008.MATERIALS: From bone marrow of patients with non-hematopoietic disease, MSCs were provided by Department of Orthopedics, Dongzhimen Hospital, Beijing University of Chinese Medicine.METHODS: Bone marrow was collected form posterior superior iliac spine of patient, MSCs were isolated and cultured by Percoll method. When the cells were confluent at 90%, they were trypsinized and observed by inverted miscroscopy. The second passage of cells were collected for index detection.MAIN OUTCOME MEASURES: Cell morphological characteristics and immunophenotype; cell activity was detected by MTT; cell division and apoptosis in the proportion of necrosis were analyzed by flow cytometry analysis.RESULTS: The passaged MSCs exhibited uniform appearance in fusiform shape, and their growth was slowed down after 9 passages, exhibiting cytoplasm vacuolization and body enlarging. The second passage of MSCs was positive for CD44, CD106,and CD105, but negative for CD34 and CD45. MTT values peaked at passage 9, and gradually decreased since passage 10. At passage 11, the number of MSCs at division stage was increased, but from the sixth passage, the number of apoptotic cells increased significantly, reaching more than 60% at passage 8.CONCLUSION: According to biological characteristics analysis of MSCs at each passage, the third to the sixth passage cells are recommend for clinical therapy.

Objective To analyse the clinical features of pelvic insufficiency fractures (PIF) in patients with cervical cancer after radiotherapy and explore the risk factors affecting its occurrence .Methods 55 cases of patients with cervical cancer that used radia-tion therapy as a single treatment were chosen in our hospital from February 2007 to May 2010 and the clinical features were ana-lysed;The fractures of spine ,sacrum ,sacroiliac joint ,ilium and pubis and femoral were observed and the density of fifth lumbar (L5 ) vertebrae ,left and right sacrum were detected via the CT or MRI (Hounsfield Unit)after 2-year follow-up ,the different factors on the incidence of PIF were explored .Results 12 cases (19 sites) of patients in 55 patients occured PIF after follow-up 2years ,the cumulative incidence was 21 .82% ;the distribution of PIF parts were followed :lumbar vertebrae had 5 cases ,sacral had 5 cases ,pu-bis had 4 cases ,sacroiliac joint had 2 cases ,iliac had 2 cases and femoral head had 1 case .The incidence rate of PIF that density of fifth lumbar vertebrae was ≤130 HU and >130 HU were 16 .36% and 5 .45% respectively ,the PIF′incidence rate that density of left side of sacrum was≤ -35 HU and > -35 HU were 18 .18% and 3 .64% respectively ,the incidence rate of PIF that density of right side of sacrum was ≤ -35 HU and > -35 HU were 20 .00% and 1 .82% respectively ,the density of the three parts all had statistical difference on the incidence of PIF (P<0 .05) .Univariate analysis showed that menopausal status and the average density of CT had statistical effects on PIF (P<0 .05);Multiple analysis showed that the average density of CT was the independent factors affecting PIF′incidence after radiotherapy .Conclusion The patients with cervical cancer may occur pelvic insufficiency fracture af-ter radiotherapy ,and its incidence is related to menopausal status and bone mineral density .

To evaluate effects and mechanism of Captopril on BP of 2 -kidney, 1 -clip reno-vascular hypertensive rats ( 2K1C - RHR ), Platelets cytosolic free calcium, concentration ([Ca2+]i) and platelets aggregation (PAg) are measured. The results are as follows: [Ca2+ ]; and PAg increase significantly (P

Objiective To evaluate the histocompatibility of gelatin-bletilla/Salvia-miltiorrhiza i material and to discuss the appropriate concentration of salvia-miltiorrhiza in the material. Method Salvia-miltiorrhiza together with gelatin and bletilla was used to make a kind of porous membranes. A total of 175 rats were divided randomly (random number) into 5 groups ( n = 35 in each). The porous membranes containing salvia-miltiorrhiza material in different concentrations of 1, 2, 4, and 5 mL/100 g were implanted subcutaneously into the rats of the four experimental groups, respectively. The gelatin-bletilla material without salvia-miltiorrhiza was implanted into the rats of control group. In 1, 3, 7, 14, 21, 28 and 56 days after implant, the materials were taken out of the bodies of the rats, separately. The material implanted for 1, 3, 7 and 14 days were observed with immunohistoche-mistry. Results In the area of implant, no noticeable inflammation or other was found. The implanted materials were degraded and entirely absorbed in vivo in 8 weeks. The salvia-miltiorrhiza in concentration of 2 mL/100 g in vivo promoted the angiogenesis most significantly. Conclusions The gelatin-bletilla/salvia-miltiorrhiza material has excellent histocompatibility and the appropriate concentration of salvia-miltiorrhiza in material is 2 mL/100 g.

ObjectiveTo explore the practicability of combined surgical treatment for the patients with Hepatocellular Carcinoma(HCC) complicated with Portal Hypertension(PH).MethodsThe clinical data of 43 patients withHCCcomplicatedwithsignificantesophagealvaricesandhyperspleniawereanalyzed retrospectively.All patients were diagnosed with esophageal varices and hypersplenia of different degrees, 14 of them had severe esophageal varices, the other 29 patients had moderate esophageal varices.Firstly all patients underwent splenectomy, 18 of them had selective portoazygous devascularization in addition.After that the patients received hepatectomys ,with local excision or segmentectomy as the major operation methods.Results All patients received hepatectomy combined with splenectomy treatment.There was no perioperative mortality, but 12 patients had complications after the surgery.Over seventy percents patients(33/43)accepted regular followup.Among these 33 patients,the 1-year and 3-year survival rates were 90.9％ (30/33) and 63.6％ (21/33)respectively.Eleven patients died of tumor recurrence.Four patients had upper postoperatively gastrointestinal hemorrhage.ConclusionHepatectomy combined with splenectomy didn't increase the mortality in the patients with HCC complicated with PH.The combined surgery might reduce the incidence of severe complications, such as postoperative bleeding.We believe the combined surgical treatment is feasible for this group of the patients.