Physiology course has become an important teaching part of non-medical professions in medical colleges,but there are no normative teaching textbooks and the corresponding teaching syllabus for these non-medical professions,which causes teaching contents chaos and affects the teaching effect.According to their attributes and characteristics,the research group explores continuously the physiology teaching contents suitable for non-medical professions,pays attention to contents settings which are common-sense,practical,systematic and flexible,in order to promote physiology teaching development in non-medical professions.

We describe two cases in which a forceps imprintdeveloped in the AcrySof ReSTOR IOL optic whileinserting these IOLs into the cartridge with straightclamping forceps. In case 1 ,the AcrySof ReSTOR IOL wasexplanted and observed under scanning electronmicroscopy (SEM). The SEM showed that the stepdesign of ReSTOR Multifocal IOL was well maintained. Incase 2, visual acuity, contrast sensitivity and wavefrontmeasurements were performed and no specific changeswere found. Strong evidence does not exist that suggeststhe on-axis forceps imprint can significantly compromisevisual acuity.

OBJECTIVETo explore the role of Compound Danshen Injection (CDI) in regulating the expression of aquaporin 3 (AQP3) in human amnion epithelium cells (hAECs), and to study the relation between c-Jun N-terminal kinase (JNK) signal pathway and AQP3.

METHODShAECs were isolated and primarily cultured from term pregnancy with normal amniotic fluid volume and from term pregnancy with oligohydramnios, and then hAECs were further divided into four groups, i.e., the blank control group (A), the SP600125 group (B), the CDI group (C), and the SP600125 +CDI group (D). The cell viability was measured by cell counting kit-8 assay (CCK-8). The expression of total JNK, phosphorylated JNK, and AQP3 were determined by Western blot.

RESULTS(1) In hAECs with normal AFV or with oligohydramnios: There was no statistical difference in the cell viability or the expression of total JNK among the 4 groups (P > 0.05). But there was statistical difference in the expression of p-JNK (P < 0.05). Compared with A group, the expression of p-JNK was obviously down-regulated in B group, but obviously up-regulated in C group (P < 0.05). The expression of p-JNK was significantly lower in D group than in C group, but higher than that in A group or B group (P < 0.05).The AQP3 expression in the hAECs with normal amniotic fluid volume of C group and D group were higher than that in the A group (P < 0.05). However, there was no statistical difference in the AQP3 expression between C group and D group (P > 0.05). In hAECs with oligohydramnios, the expression of AQP3 obviously decreased in B group, but up-regulated in C group (both P < 0.05). The expression of AQP3 was lower in D group than in C group, but higher than in B group (P < 0.05).

CONCLUSIONCDI could regulate the AQP3 expression in hAECs with oligohydramnios via activating the JNK signal pathway.

Amnion ; cytology ; drug effects ; Aquaporin 3 ; metabolism ; Cells, Cultured ; Drugs, Chinese Herbal ; pharmacology ; Epithelial Cells ; drug effects ; metabolism ; Female ; Humans ; JNK Mitogen-Activated Protein Kinases ; metabolism ; MAP Kinase Signaling System ; physiology

BACKGROUND: Fructose-1,6-diphosphate (FDP) of certain dosage plays a protective role in the pancreatic islets damaged by interleukin-1 beta (IL-1β), and there are different effects of FDP of low and high dosages.OBJECTIVE: To investigate the effects of FDP of low and high dosages on the islet cells damaged by IL-1β.DESIGN: A grouped design and controlled animal experiment.SETTING: Department of Physiology, North Sichuan Medical College.MATERIALS: The experiments were carried out in the Tumor Laboratory and Central Laboratory of Rheumatology and Immunology, Department of Surgery, North Sichuan Medical College between July 2004 and February 2006. Twenty Wistar rats within 1-3 days after birth were selected.METHODS: The pancreases of the rats were removed to collect islet cells, and then the cells were divided into normal control group, IL-1β damaged group, IL-1β+1, 25, 50 mmol/L FDP groups. The cellular activity was detected with methyl-thiazol-tetrazolium (MTT) assay, basic amount of insulin secretion and that stimulated by high glucose with radioimmunoassay, content of nitric oxide and activity of nitric oxide synthase (NOS) with nitric oxide and NOS kits, and the with [Ca2+]i with Fura-2fluorescent assay.MAIN OUTCOME MEASURES: Activity of islet cells; basic amount of insulin secretion and that stimulated by high glucose; content of nitric oxide and activity of NOS; [Ca2+]i.RESULTS: ① The activities (A values) of the islet cells in the IL-1β damaged group, IL-1β+1, 25, 50 mmol/L FDP groups were obviously lower than that in the normal control group (0.116±0.012, 0.129±0.008, 0.125±0.015, 0.120±0.016, 0.252±0.020, P ＜ 0.01). The activities (A values) of the islet cellswere not significantly different from that in the IL-1β damaged group (P ＞ 0.05) when the FDP dosage was too low (1 mmol/L) or too high (25 mmol/L). ② The basic amount of insulin secretion and that stimulated by glucose were significantly lower in the IL-1β damaged group, IL-1β+1, 25, 50 mmol/L FDP groups than in the normal control group [(237.00±22.21), (230.83±11.58), (225.16±12.46), (220.50±15.63),(425.67 ±16.85) mIU/L; (90.17 ±6.11), (96.62 ±8.64), (87.66-±8.24),(85.46±9.59), (204.50±10.78) mIU/L, P ＜ 0.01], and there were no significant differences between the FDP groups of Iow and high dosages and the IL-1β damaged group (P ＞ 0.05). ③ The NOS activity and content of nitric oxide in the supernatant were obviously higher in the IL-1β damaged group than in the normal control group [(332.07±25.34), (144.86±12.17) μkat/L;(457.64±19.29), (84.67±10.23) μmol/L, P ＜ 0.01], and those in the IL-1β+1, 25, 50 mmol/L FDP groups were not significantly different from those in the IL-1β damaged group. ④ The [Ca2+]i concentration in islet cells was obviously higher in the IL-1β damaged group than in the norrmal control group [(328.50±26.28), (73.42±1.79) nmol/L, P ＜ 0.01], but obviously lower in the IL-1β+1, 25, 50 mmol/L FDP groups than in the IL-1β damaged group [(152.72± 11.86), (216.39±15.32), (233.61±21.76),(328.50±26.28) nmol/L, P ＜ 0.01].CONCLUSION: FDP of low and high dosages can not protect the islet cells damaged by IL-1β.

ObjectiveTo explore the application of diffusion-weighted magnetic resonance imaging (DWMRI) in precise radiotherapy of esophageal carcinoma.MethodsThirty-seven patients with biopsy proven esophageal cancer from March 2010 to January 2011 were included.To delineate the gross tumor volume (GTV) using CT and DWMRI images,each patient was examined by DWMRI and CT scan using the same position before radiotherapy.To compare the maximum diameters and volumes of tumor between CT and DWMRI. The tumor lengths measured by esophagogram,esophagoscope,CT and DWMRI were compared.ResultsTumor lengths under esophagogram,esophagoscope,CT and DWMRI were 5.70 cm,6.06 cm,7.97 cm and 5.79 cm respectively. The lengths between CT and esophagogram,CT and esophagoscope,CT and DWMRI had statistical significance respectively (F=4.88,P=0.003).The maximum diameters of tumor shown on CT and DWMRI were 3.79 cm and 3.81 cm respectively ( t =-0.32,P=0.751 ).The GTV were 45.75 cm3 and 38.05 cm3 in CT and DWMRI respectively (t=5.30,P =0.001 ).53 lymph nodes were assessed positive on both CT and DWMRI.DWMRI excluded 25 positive lymph nodes assesed by CT; also confirmed 15 negative lymph nodes excluded by CT,6 of which were paraesophageal lymph nodes.The addition of DWMRI information altered the clinical stage in 6 patients.ConclusionsTumor lengths measured on DWMRI and esophagogram had the optimal approximation.It was easy to find paraesophageal lymph nodes via DWMRI.With the addition of DWMRI information,the target range and clinical stage were alerted in some patients.

ObjectiveTo analyze the prognosis of 784 patients according with clinical staging of esophageal carcinoma treated with non-surgical methods,investigate the predictive value and deficiency of the clinical staging.MethodsFrom July 2003 to January 2009,784 patients with esophageal carcinoma received 3DCRT treatment.The prescribed doses ranged from 50 Gy-70 Gy with median dose of 60 Gy,1.8-2.0 Gy/fraction,1 fraction/day,5 fractions/week.65 patients received prescription dose of＜60 Gy and all the others'≥60 Gy.All the patients were divided into subgroups according to different T,N and TNM stages.Therapeutic effect was evaluated.ResultsThe follow up rate was 97.1％,503 patients were followed up for more than 3 years and 122 were followed up for more than 5 years.The 1-,3-,5-year local control rates and overall survival rates were 77.2％,54.2％,46.5％ and 69.5％,34.9％,23.9％,respectively,with median survival time of 21 months.There were significant differences of survival curves for different T stages,N stages and TNM stages.For the groups of stage Ⅰ,Ⅱ and Ⅲ,the 1-,3-,5-year survival rates were 86.4％,47.6％,45.1％ ;84.7％,46.3％,36.4％ and 64.0％,30.9％,19.1％,respectively ( x2 =29.34,P =0.000).There were 752 patients with squamous cell carcinoma ( 95.9％ )and 32 patients with non-squamous cell carcinoma (4.1％ ),the median survival time were 21 and 16 months,respectively ( x2 =4.44,P =0.035 ).There were significant difference of survival rates for the subgroups whose GTV volume ≤20 cm3,20 -40 cm3,40 -60 cm3 and ＞60 cm3 (54 months,29 months,21months and 14months,x2 =68.71,P =0.000).ConclusionsThe clinical staging of esophageal carcinoma treated with non-surgical methods could predict the prognosis accurately,for patients with different pathology and GTV volumes,there were variance in the prognosis,so we advised the complement of the two factors in the draft of clinical stages.

Objective To compare the dosimetric difference between volumetric modulated arc therapy (VMAT) and static intensity modulated radiotherapy (IMRT) for esophageal carcinoma.Methods Thirty patients were selected in this study,including 5 cases in the cervical,5 the lower thorax,10 the upper thorax and 10 the middle thorax.VMAT plans with a single arc and IMRT plans with five fields designed for each patients.Planning target volume (PTV) were prescribed to 60 Gy in 30 fractions.Delta 4 was used to verifie the dosimetric of treatment plans.Using paired t-test or Wilcoxon signed-test to compare the dose distribution on planning and organs at risk (OAR).The monitor units and treatment time were also evaluated to measure the treatment efficiency.Results All the VMAT and IMRT plans can satisfy the clinical dosimetry requirements.VMAT had better conformal index for PTV than IMRT (P =0.008).VMAT was better than IMRT by reducing the Dmax of spinal cord (P =0.032),while the V30,V40 and Dmean of heart were significantly higher (P =0.041,0.012,0.002).For cervicals,the V5,V10,V15 and mean dose of lung were significant higher in VMAT than those in IMRT (P =0.002-O.002,0.002).For uppers,the values of heart V30 and Dmean were significantly larger in VMAT than IMRT (P =0.030,0.026).However,the Dmax of spinal cord in VMAT was lower than IMRT (P =0.006).For middles,VMAT reduced V10,V15,V20 of lung (P =0.015,0.028,0.041).There were no significant differences between VMAT and IMRT in the lowers (P =0.262-0.998).The 3 mm/3％ γ pass rate was 92.75％ for VMAT and 92.98％ for IMRT (P =0.826).The average MU of VMAT (460.66 MU) was reduced by 11.84％ compared with IMRT (522.55 MU) (P=0.001).The delivery time of VMAT (139.6s) compared with IMRT (298.73 s) was reduced by an average of 53.27％ (P =0.000).Conclusions Compared with IMRT,VMAT improved the OARs dose sparing and the target CI with similar dose distribution to the target.VMAT required fewer MU,shorten the treatment time significantly.The implementation of Synergy is stable and reliable.

Objective To observe the relationship between computed tomography-gross tumor volume (GTV) and non-surgical T stage in patients with esophageal squamous cell carcinoma (ESCC) and the survival rates of patients with different GTVs,and to investigate the impact of GTV on the prognosis of ESCC after three-dimensional radiotherapy.Methods A retrospective analysis was performed on 223 ESCC patients without lymph node metastasis and distant metastasis who were hospitalized from July 2003 to January 2009.The prescribed doses of three-dimensional radiotherapy ranged from 50-70 Gy.These patients were divided into 3 or 4 groups according to different percentile intervals of GTVs.The Spearman rank correlation analysis was used for investigating the relationship between non-surgical T stage and GTV.The Kaplan-Meier method was used for calculating survival rates,and the log-rank test was used for survival difference analysis.Results The follow-up rate was 98.2％.A total of 163 patients were followed up for at least 3 years.The median GTVs of patients with T1 +2 ESCC,T3 ESCC,and T4 ESCC were 19.31 cm3,33.69 cm3,and 41.25 cm3,respectively,exhibiting a positive correlation between non-surgical T stage and GTV (P =0.000).The 5-year survival rates were 59％,43％,and 24％ (P =0.000) in 3 GTV-based groups and were 55％,51％,31％,and 24％ (P =0.004) in 4 GTV-based groups.The primary cause of death for the patients with GTVs of ≤35 cm3 and ＞35 cm3 was failure of local control (57.9％ vs 52.1％) ; 21.9％ and 13.8％ of the patients with a GTV of ＞ 35 cm3 died of uncontrol and excessive bleeding,versus 9.4％ and 3.1％ of the patients with a GTV of ≤ 35 cm3 (P =0.046 ; P =0.029) ;2 of the patients with a GTV of ＞ 35 cm3 died of grade 5 radiation pneumonitis.Conclusions GTV is positively correlated with nonsurgical T stage in esophageal cancer patients who receive radiotherapy.The 3-level and 4-level grading of GTV can be used for prognostic evaluation,and the 3-level grading of GTV is more closely related to prognosis.The patients with a larger GTV have higher incidence of uncontrol and bleeding and risk of treatment-related death than those with a smaller GTV after radiotherapy.

Background Eicosapentaenoic acid(EPA)function as the critical lipid mediators involved in several biological events in human body and play important role in suppressing the genesis of vascular endothelial growth factor (VEGF),migration and proliferation of vascular endothelial cells.Many ocular diseases were proved to be associated with neovascularization.Objecfive The purpose of this study was to investigate the inhibitory effect of EPA on the proliferation of human umbilical vein endothelial cells (HUVEC) indueed by VEGF. Methods HUVEC strain was cultured and passaged,and difierent concentrations of EPA were added to the medium with and without VEGF.The cultured cells were identified by antiofactor Ⅷ polyclonal antibody.The suppressing role of different concentrations of EPA on the proliferation of VEGF-induced or-uninduced HUVEC was assessed by MTT method.The influence of difierent concentrations of EPA on the cellular cycle of VEGF-induced HUVEC was assayed using flow eytometry.The expression of Flk-1,a receptor of VEGF,in the HUVEC Was detected by immunohistochemistry. Results Cultured HUVEC showed the ftlsiform in shape and presented with the cobblestone-like arrangement with the positive response for Ⅷ factor-related antigen.Various concentrations of EPA showed obviously inhibitory effect on VEGF-induced or-unindueed HUVEC at a dose-dependent manner (F=23.072.P=0.000).The inhibitory ability of EPA on VEGF-induced HUVEC was stronger than VEGF-uninduced HUVEC(F=41.417,P=0.000).In 24,48 and 72 hours,the action of EPA on the proliferation of HUVEC was gradually enhanced with the prolong of time(F=1.495,P=0.236).Cell cycle analysis indicated that EPA arrested VEGF-induced HUVEC in G0/G1 phase.The ratio of HUVEC in G0/G1 phase in EPA group was(75.83±1.56)%,and that in control groups was(68.62±1.44)%,showing a significant difference between them(t=-5.88,P=0.00),and no apoptosis of HUVEC was found in both groups.Flk-1 was strongly expressed in the cellular nucleus and cytoplasm in control group.However,the positive expressing intensity of Flk-1 in the HUVEC weakened,and the positive cell number was evidently less in EPA group. Conclusion EPA can inhibit the proliferation of VEGF induced HUVEC through arresting the synthesis of DNA of HUVEC and downregulate the expression of Flk-1 in HUVEC.These results suggest that EPA might exert an antiangiogenic effect.

Adult ; Biopsy ; DNA ; genetics ; Female ; Gene Expression Profiling ; Glomerulonephritis, IGA ; genetics ; pathology ; Humans ; Kidney ; pathology ; Male ; Middle Aged ; Young Adult