The reason for the construction of standard operation process(SOP) in equipment application and maintenance is expatiated.The content and how to construct the system are also discussed.Many problems in equipment application and management are solved.The efficiency of all kinds of equipment in the construction of mobile medical service corps are enhanced.

Objective To compare the dosimetric parameters between the use of Tandem and Ring (TR;Nucletron#090.617) or Tandem and Ovoid (TO;Nucletron#189.730) applicators during three-dimensional (3D) high-dose rate (HDR) brachytherapy (BT) for cervical cancer.Methods The records of 40 cervical cancer (ⅡB-ⅣA) patients treated with 3D-image-guided HDR-BT were reviewed.Of these 40 patients, 20 were treated with the TO applicator, and 20 with the TR applicator.The D100% and V150% of the clinical target volume (CTV) and the D2 cc of organs at risk (OAR)(the rectum, bladder, and small intestine) during 3D-HDR-BT using TO and TR were compared using the independent sample t-test.ResultsOverall metrics:CTV volume:66.04±13.86 cm3(TR) vs.65.67±15.08 cm3(TO)(P=0.052);CTV D100:3.71±0.34 Gy (TR) vs.3.37±0.49 Gy (TO)(P=0.016);CTV V150%:0.54±0.02(TR) vs.0.56±0.04(TO)(P=0.034);rectum D2 cc:3.38±0.30 Gy (TR) vs.2.95±0.80 Gy (TO)P=0.037);bladder D2 cc:4.33±0.39 Gy (TR) vs.2.93±1.27 Gy (TO)(P=0.00);and small ntestine D2 cc:3.04±1.02 Gy (TR) vs.3.41±0.57 Gy (TO)(P=0.171).Conclusions TR has better CTV coverage than TO during 3D HDR brachytherapy for cervical cancer.In addition, D2 cc of the rectum and bladder were both igher with TR than with TO, though there is no significant dosimetric difference in the small intestine between the two applicators.Therefore, tumor location, extent of invasion, and vaginal conditions should be considered when selecting the suitable pplicator for the treatment of cervical cancer.

Objective To explore the relationships of insulin-like growth factor 1 (IGF-1) and insulin-like growth factor binding protein 3 (IGFBP-3) with growth of very low birth weight (VLBW) infants in the early postnatal stage. Methods According to the individual gestational age and birth weight, 32 cases of VLBW infants were divided into small for gestational age (SGA) group and appropriate for gestational age (AGA) group. After birth, all the infants were given the same nutritional intake. The body weight, body length, head circumference and body mass index (BMI) were monitored at different time points (d0, d7, d14 and d28 after birth). Serum IGF-1 and IGFBP-3 levels were measured by radiommunoassay, and IGF-1/IGFBP-3 molar ratio was calculated. Results There was no signiifcant difference of body weight, body length, head circumference and BMI between two groups at d0, d7, d14 after birth. Body weight and BMI in SGA group were less than those in AGA group at d28 after birth (P<0.05). The levels of IGF-1, IGFBP-3 and IGF-1/IGFBP-3 in SGA group and IGF-1/IGFBP-3 in AGA group did not change with age after birth. The levels of IGF-1 and IGFBP-3 were increased in AGA group after birth. The level of IGF-1 in AGA group at d14 and d28 after birth was higher than that in AGA group at d0 after birth (P<0.05). The level of IGFBP-3 in AGA group at d28 after birth was higher than that in AGA group at d0 after birth (P<0.05). The levels of IGF-1 and IGFBP-3 in SGA group at d28 after birth were lower than those in AGA group at d28 after birth (P<0.05). Conclusions Serum IGF-1 and IGFBP-3 levels in SGA group are lower than those in AGA group. Low levels of IGF-1 and IGFBP-3 may result in growth retardation.

Objective To study the correlation between blood glucose variability and TOAST type of patients with acute ischemic stroke and provide new evidence which can improve the prognosis of ischemic stroke.Methods One hundred and forty-three hospitalized patients with acute ischemic stroke from August 2013 to August 2014 were included.All patients were estimated about the general state of health and performed laboratory examinations and other auxiliary examinations.Then the TOAST type of all cases was classified.The 24-hour blood glucose monitoring was done to the patients to calculate the blood glucose variability.One hundred and forty-three cases were divided into blood glucose variability group ( standard deviation of glucose ( GluSD )≥1.4 mmol/L, 85 cases ) and control group ( GluSD <1.4 mmol/L, 58 cases) according to glucose variability.We estimated the neurologic impairment of the patients with the US National Institutes of Health Stroke Scale ( NIHSS) and the activities of daily living with Barthel index.The relation between blood glucose variability and the prognosis of ischemic stroke was analysed with multivariate analysis.Results Differences were significant in age, history of diabetes and NIHSS score between blood glucose variability group and control group.The degree of neurologic impairment of large artery atherosclerosis (LAA) group (moderate and severe neurologic impairment:43/53(81.0%)) and cardio-aortic embolism ( CE) group ( moderate and severe neurologic impairment:15/17 ) was more serious than that in small artery occlusion ( SAO) group ( moderate and severe neurologic impairment:6/71 ( 8.5%) ) , especially in CE group.The differences were significant (χ2 =7.043,P<0.05).Blood glucose variability in patients with LAA was more obviously than that in other patients.NIHSS score and activities of daily living of the patients estimated on admission and after 2 weeks were not different in the blood glucose variability group, but the difference was significant in control group.The poor prognosis in blood glucose variability group was 2.821 times that in control group ( 95% CI 1.880 -4.233 ).Conclusions The people sufferd ischemic stroke with old age, diabetes or severe case are more vulnerable to abnormal blood glucose variability.Abnormal blood glucose variability is an independent risk factor for acute ischemic stroke and induces difficulty to recovery and poor prognosis.

Objective To investigate the effects of acute oxidative stress induced by H2O2 on expression of senescence marker protein30 (SMP30) and morphology,survival rate of human lens epithelial cells (HLECs).Methods HLECs were treated with H2O2(0 μmol · L-1,100 μmol · L-1,200 μmol · L-1,300 μmol · L-1) for 24 hours,the acute oxidative stress models were established,the changes of cell morphology was observed,and MTT was used to analyze the cells state,the expressions of SMP30 were measured by Western blot.Results The cell density decreased,morphological changed and viability of cells significant decreased in 100 μmol · L-1 and 200 μmol ·L-1 treated group,the large and round cells appeared,the cell body stretched with unclear boundary.With the H2O2 concentration increased,the viability of cells were gradually decreased in treated group,there were statistical differences compared with 0 μmol · L-1 treated group (all P ＜ 0.05).The relative expression of SMP30 in control group and 100 μmol · L-1 and 200 μmol · L-1 treated group were 0.273 ±0.055,0.464 ± 0.058,0.442 ± 0.050,respectively.There were significant differences between 100 μmol · L-1,200 μmol · L-1 treated group and control group (all P ＜ 0.05),and there was no statistical difference between 100 μmol · L-1 and 200 μmol · L-1 treated group (P ＞ 0.05).Conclusion SMP30 is up-regulated in HLECs under acute oxidative stress induced by H2O2,the cell morphology is changed,the viability of cells is decreased,and SMP30 may be involved in the process of acute oxidative stress in HLECs.

This study aimed at exploring the effects of Guttiferone K (GUTK),a compound isolated from G.yunnanensis,on inhibiting the proliferation of pancreatic cancer cells both in vitro and in vivo.MTT assay was used to detect the inhibitory effects of GUTK on the proliferation of five human pancreatic cancer cell lines.Western blot was adopted to detect the apoptosis-related protein expressions of Caspase-3,poly adenosinediphosphate-ribose polymerase (PARP) and Bcl-xL.For in vivo study,the human pancreatic cancer cell MIA PaCa-2 was orthotopically injected into the pancreatic tail of the orthotopic mice.One week later,GUTK was administered by intraperitoneal (i.p.) injection every other day for 4 weeks.The volume and weight of the tumor tissue were measured.The protein expression level of cleaved caspase-3 in tumor tissue of all the groups was quantified by immunohistochemistry.As a result,it was found that GUTK effectively inhibited the proliferation of the five human pancreatic cancer cell lines at a low concentration.GUTK induced caspase-related apoptosis by triggering a series of events in MIA PaCa-2 cells including cleaved Caspase-3 and PARP activation,Bcl-xL down-regulation,and eventually cell death in a time and dose dependent manner.Furthermore,in vivo study revealed that intraperitoneal injection of GUTK significantly suppressed the growth of pancreatic cancer cells in the orthotopic mouse models,and the protein level of cleaved caspase-3 was increased in the GUTK and gemcitabine treated groups.It was concluded that GUTK induced apoptosis in human pancreatic cancer both in vitro and in vivo,and was potential to develop into a clinical anticancer agent.

To study the mechanisms of total flavonoid from Glycyrrhizae Radix et Rhizoma (TFGR) and its ingredient isoliquiritigenin (ISL) on their regulation of M2 phenotype polarization of macrophages. IL-4 (60 μg x L(-1)) induced RAW264.7 cells for 6 h to establish the M2 macrophage model. TFGR and ISL restrained breast cancer cells migration with the aid of M2 macrophages in vitro. TFGR and ISL inhibited gene and protein expression of Arg-1, up-regulated gene of HO-1 and protein expression of iNOS, enhanced the expression of microRNA 155 and its target gene SHIP1, meanwhile down-regulated.the phosphorylation of STAT3 and STAT6. So TFGR and ISL were the bioactive fraction and ingredient in Glycyrrhizae Radix et Rhizoma to reverse M2 phenotype macrophages polarization. TFGR and ISL inhibited the promotion of M2 macrophages to breast cancer cells migration in vitro, STAT signal pathways and miR155 were partly involved.
Animals ; Cell Line, Tumor ; Cell Movement ; drug effects ; Cell Polarity ; drug effects ; Chalcones ; pharmacology ; Flavonoids ; pharmacology ; Glycyrrhiza ; chemistry ; Interleukin-4 ; genetics ; metabolism ; Macrophages ; cytology ; drug effects ; metabolism ; Mice ; RAW 264.7 Cells ; Rhizome ; chemistry

To unvestugate the evolutuon law and unfluenced factors of dussolved organuc matter for electron transfer capacuty durung unutual landfull stage, dussolved organuc matter ( DOM ) was extracted from landfull wastes at dufferent depth. Shewanella oneudensus MR-1 and cutrate uron ( FeCut ) were respectuvely used as electron donor and electron acceptor to measure electron donatung capacuty, electron acceptung capacuty and electron shuttlung capacuty. Afterwards, the unfluenced factors of electron transfer capacuty were studued by analyzung spectral unformatuon. The results showed that proteun-luke components and humuc-luke components were able to transfer electrons, and they also accepted electrons from mucroorganusms. Electron donatung capacuty and electron acceptung capacuty uncreased furstly and then decreased. However, the electron shuttlung capacuty uncreased persustently durung the landfull process. Proteun-luke components were the maun components of dussolved organuc matter durung the unutual landfull stage, and ut was maunly responsuble for the electron donorung capacuty and electron acceptung capacuty of DOM. Electron shuttlung capacuty resulted from humuc-luke components durung the cycluc redox process. Electron shuttlung capacuty persustently uncreased durung the landfull process based on humuc-luke components generated durung the stage.

Objective To discuss the experience of open heart operation on beating in complex and severe congenital heart diseases. Method This kind of operation was put to use in 48 cases of the heart diseases in order to observe the effect of myocardial protection, prevention from air embolism,exposure of the operative field, and cardiopulmonary bypass. Results Operation field exposure was clear enough to finish the manipulation. One cases was eventiful postoperatively and died(2.08%). Conclusion Open heart operation on beating with slight hypothermia might have much feasibility in the part of complicated and severe congenital heart diseases.

Objective To evaluate proton MR spectroscopy (1H-MRS) for detection of the motor cortex and adjacent brain in amyotrophic lateral sclerosis (ALS) patients with apparent upper motor neuron involvement after olfactory ensheathing cells(OECs) transplantation. Methods From December 2004 to February 2005, 7 patients with clinically definite ALS who could safely undergo MRS were admitted into the perspective study. The neurological status, ALS functional rating scale (ALSFRS), EMG, and 1H-MRS taken before and 2 weeks after operations were carefully analyzed. The NAA/Cr and Cho/Cr ratios were measured in the cerebral peduncle, genu and posterior limb of the internal capsule, corona radiata and precentral gyrus. Results The ALSFRS in 2 cases improved obviously whose ALSFRS increased from 30 to 33 and from 29 to 34 respectively. And 5 cases remained stable 2 weeks after OECs transplantation. Statistical analyses for all seven cases showed both the NAA/Cr and Cho/Cr ratios decreased, but in the two cases with ALSFRS improvement the NAA/Cr increased in the certain anatomic position which confirmed the neurological and EMG findings. Conclusion The proton MR spectroscopy is a suitable noninvasive measure for ALS evaluation. The preliminary study suggests that two of the seven ALS cases improved apparently short-term after OECs transplantation. More patients are required for the clinical study and longer follow-up duration is needed for future research.