Objective To study the variation of uterine artery hemodynamics indexes of patients treated with laparoscopic myomectomy during perioperative period.Methods 78 patients with hysteromyoma were selected as research object,and they were divided into the control group(open surgery group) 39 cases and the observation group (laparoscopic surgery group) 39 cases based on the surgery method,then the Vmax,Vmin,PI and RI of all levels uterine artery of two groups before and after the surgery at tenth and thirtieth day were detected and compared.Results The change range of Vmax,Vmin,PI and RI of all levels uterine artery of observation group after the surgery at tenth and thirtieth day were all bigger than those of control group (all P ＜ 0.05),there were all significant differences.Conclusion The change of uterine artery hemodynamics indexes of patients treated with laparoscopic myomectomy during perioperative period is obvious,and it reflects that the stress degree of organism is smaller.

Objective:Clonidine,by activating peripheral?-adrenoceptors,produces transient pressor response after i.v. injection in anesthetized animals.Moxonidine,with at least 40-fold higher affinity to I_1-imidazoline receptors than to?_2-adreno- ceptors,produces also a transient pressor response.This work was designed to investigate whether I_1-imidazoline receptors are involved in this pressor effect of moxonidine.Methods:Female spontaneously hypertensive rats(SHRs,aged 14-16 weeks) were anesthetized with urethane.To observe the transient pressor responses,moxonidine 0.1,0.3,1.0 mg/kg(intravenous, i.v.),2.0?g(intracerebroventricular,i.c.v.)and 1.0,10.0 mg/kg(intragastric,i.g.)were administrated in different groups of rats.To evaluate the roles of?_1-adrenoceptors,?_2-adrenoceptors and I_1-imidazoline receptors in the transient pressor responses to moxonidine,prazosin(10.0?g/kg),yohimbine(2.0 mg/kg),phentolamine(0.2 mg/kg),idazoxan(1.0 mg/kg) or yohimbine+idazoxan(2.0 mg/kg+1.0 mg/kg)were intravenously given to the animals before moxonidine 0.3 mg/kg (i.v.).Results:It was found that i.v.moxonidine produced a greater pressor response than clonidine when producing a similar reduction of blood pressure.This effect of moxonidine was not influenced by prazosin,but was partly inhibited by yohimbine, phentolamine or idazoxan,and completely blocked by the combination of yohimbine and idzaxon.Neither i.c.v.injection nor i.g.administration of moxonidine induced transient pressor responses.Conclusion:The transient pressor response of i.v.mox- onidine is mediated by both peripheral I_1-imidazoline receptors and?_2-adrenoceptors.

Adult ; Bis(Chloromethyl) Ether ; poisoning ; Humans ; Lung Neoplasms ; chemically induced ; Male ; Middle Aged ; Occupational Diseases ; chemically induced

Asbestos ; adverse effects ; Humans ; Mesothelioma ; chemically induced ; diagnosis ; Peritoneal Neoplasms ; chemically induced ; diagnosis

Objective To study the antagonistic effects of selenium and germanium (Se-Ge) in combination on the kidney damage induced by fluoride in rats.Methods Fifty SD rats were randomly divided into 5 groups,the control group (distilled water),fluoride group (NaF,100 mg/L),fluoride plus selenium group (100 mg/L NaF + 20 mg/L Na2SeO3),fluoride plus germanium group(100 mg/L NaF + 2 000 mg/L Ge-132) and fluoride plus selenium and germanium group(100 mg/L NaF+ 20 mg/L Na2SeO3+ 2 000 mg/L Ge-132),10 in each group (males and females were in the same number).The administration was conducted through gavage for 90 days.After 90 days of treatment,the kidneys were collected and the organ coefficients were calculated,MDA contents,SOD and GSH-Px activities in the tissue were determined and the histopathological examination was done.Results Fluoride decreased the organ coefficient of kidney,Se and/or Ge showed an obvious antagonism to fluoride,administration in combination was more efficient than singly.Na2SeO3 and/or Ge-132 had an antagonistic effect to fluoride in the increase of lipid peroxide(MDA) and decrease of the activity of glutathione peroxidase(GSH-Px),superoxide dismutase(SOD).Na2SeO3 and/or Ge132 could prevent the pathologic damage caused by fluoride in the kidneys.Conclusion Na2SeO3 and Ge-132 in combination has an obvious antagonistic effect on fluoride-induced kidney damage.

Soft-tissue deformation is one of the important research directions in virtual surgery. Mass-spring model and finite-element model are the two most important modeling technology of the soft tissue modeling. It is very important for the current soft-tissue deformation modelling to analysize, to summarize the main idea, the influence factors and the modeling route of the two kinds of modeling methods and then to give comprehensive review.
Computer Simulation ; Humans ; Models, Biological ; Surgery, Computer-Assisted ; methods ; User-Computer Interface

A total of 185 patients with type 2 diabetes mellitus (T2DM) were consisted of male group (n =95) and postmenopausal female group (n =90).The parameters of fasting plasma glucose,HbA1c,fasting insulin,fasting C peptide,homeostasis model assessment insulin resistant index (HOMA-IR) and β-cell function (HOMA-β),blood lipid,body mass index,and waist to hip ratio were collected and analyzed by Pearson correlation analysis and stepwise multiple regression analysis.The relationships between osteocalcin and these parameters were investigated.The results revealed that osteocalcin was negatively correlated with HbA1C (P＜0.05),and osteocalcin was an independent relevant factor affecting HbA1Clevels.Osteocalcin may be involved in the regulation of glucose metabolism in T2DM.

Objective To investigate the pulmonary microvascular responsiveness of diabetic animals to sepsis and the potential mechanism of NO system.Methods Sixty-four Wistar rats of clean grade were randomly (random number) divided into 4 groups,namely normal control group (group A,n =16),diabetes group (group B,n =16),sepsis group (group C,n =16),diabetes and sepsis group (group D,n =16).Diabetic mellitus model was made in rats with injection of streptozotocin,STZ (65 mg/kg).Successful model was defined as the blood glucose value≥ 16.67 mmol/L 48 hours after injection of STZ.All animals were fed 4 weeks before initiation of next experiment.The sepsis model was established by intravenous injection of LPS (10 mg/kg) in rats.RT-PCR was used to determine the mRNA expression of Tie-2 in rats'blood.The ratio of dry/wet of lung tissue and the extravasation of Evans blue dye into the lung were detected.Quantitation of NO in lung tissue and serum was measured by using Griess method.RT-PCR was also used for determination of iNOS,eNOS,DDAH2 mRNA expressions in lung tissue.Data were analyzed with ANONA and LSD method for comparison between groups,and P ＜ 0.05 was considered statistically significant.Results Compared with septic group.,the diabetic rats with sepsis group demonstrated higher expression of Tie-2 mRNA in blood (19.72 ± 0.70) vs.(3.99 ± 0.92),P =0.00,lower ratio of dry/wet in lung tissue (0.19 ±0.01) vs.(0.22 ±0.01),P =0.000,higher permeability of Evans blue dye into lung tissue (3.76 ± 0.77) vs.(1.74 ± 0.24),P =0.000.Serum NO level was lower in group D than that in group C (123.13 ±4.24) vs.(188.30 ±5.18),P =0.000,however,NO levels in lung tissue of both group D and group C were higher than that in control group (53.62 ± 6.70),(23.63± 3.92) vs.(10.37 ± 1.29),P =0.00,and NO level in group D was higher in 2 times than that in group C (P =0.00).However,there were no differences in eNOS expression among groups A,B and C,but the difference in eNOS expression was present between group D with lower expression and group A,that lower in group D (0.07 ±0.02) vs.(0.38 ±0.05),P=0.017.Compared with group C,the expression of iNOS was higher in group D (80.23 ±2.49),(32.48±5.37) vs.(1.74±0.23),P=0.00),and the expression of DDAH2 was lower in group D (0.49 ±0.13),(7.26 ±0.50) vs.(11.96 ±0.55).Conclusions Diabetic rats with sepsis enhanced endothelial cell damages.Diabetes deteriorates the regulatory activity of NO system,suggesting the potential mechanism of the worsened damages of EC in diabetic sepsis host.

BACKGROUND:To build up an effective method of isolating and culturing granule cels is a pivotal step to enhance fertilization-embryo transfer rate. Current studies mainly focus on the isolation methods of human ovarian granulosa cels rather than cel counting, purity and subsequent growth. OBJECTIVE: To establish the effective methods of isolating, purifying and culturing human ovarian granulosa cels in vitro. METHODS: Folicular fluid was harvested from women undergoing fertilization-embryo transfer procedures. Human ovarian granulosa cels were obtained from the folicular fluid by lysis treatment, precipitation method or density gradient centrifugation. Granulosa cel mucus masses were digested with type I colagen enzyme or hyaluronidase and then cultured in the culture medium with or without autologous folicular fluid. RESULTS AND CONCLUSION: Lysis treatment yielded the largest amount of granulosa cels compared to the precipitation method and density gradient centrifugation (P > 0.05,P < 0.05, respectively). Cels prepared by the three methods showed the same cel viability. After 24 hours of culture, the precipitation method obtained the largest amount of adherent granulosa cels (P < 0.05); and the density gradient centrifugation obtained the least amount of cels (P < 0.05). Compared with type I colagen enzyme, hyaluronidase took less time to digest the cels thoroughly. Autologous folicular fluid could promote the growth and survival of granulosa cels. These findings indicate that the precipitation method, though time-consuming, can obtain the highest cel viability and harvested the largest amount of granulosa cels after culture; hyaluronidase is more suitable for digesting granulosa cel mucus mass than type I colagen enzyme; autologous folicular fluid added into the culture medium is more conducive to granulosa cel growth.

Objective To explore molecular mechanisms of apoptosis induced by STI571 in human acute promyelocytie 1eukemia cell lines NB4.nethods The expression of Annexin-V,Fas,Caspase-3 and bcl-2 in NB4 cells were detected by FCM after the treatment of STI571 at(0.5,1.0,5.0 μmol/L)ranging for 24 h,48 h and 72 h.Results With the increasing dose of STI571,the expression of bcl-2,Caspase-3,Annexin-V,Fas in NB4 changed from(10.22±0.62)declining to (5.82±0.52),from(42.21±1.02)ascending to(52.35±0.83),from(25.A2±1.21)ascending to(37.84±0.63),from(18.21±0.81)to(21.41±1.02)respectively.With the dealing time increasing(24,48,72 h),the expression of bcl-2,Caspase-3,Annexin-V,Fas in NB4,changed from (5.81±0.52)declining to(2.51±0.43),from(52.31±0.83)ascending to(69.51±1.12),from(37.81±0.93)ascending to(78.62±0.83),from(23.41±0.73)to(26.53±1.02)respectively.Conclusion STI571 can enhance the apoptosis program to Ni4 in a time-dependence and dose-dependence manner,but no change to Fas was observed.