Animals ; Chromatography, Thin Layer ; Dichlorvos ; blood ; Dimethoate ; blood ; Insecticides ; blood ; Methyl Parathion ; blood ; Mice ; Organothiophosphorus Compounds ; blood

Child, Preschool ; Female ; Humans ; Leukemia, Myeloid, Acute ; drug therapy ; Protein Kinase Inhibitors ; therapeutic use ; fms-Like Tyrosine Kinase 3 ; antagonists & inhibitors

Objective To explore the relationship between alcohol drinking and fatty liver disease and its influencing factors.Methods From October to December,2013,a total of 394 people who underwent a physical examination in the medical examination center of Wenzhou central hospital were selected for this study.Anthroposomatology measurement and biochemical tests were conducted.Results There were significantly statistical differences of triglyceride,uric acid and cholesterol in different drinking groups (P <0.05).The prevalence of high triglyceride and uric acid were increased with alcohol consumption (P <0.05).There was no significant difference of alcohol consumption between fatty liver and non -fatty liver group (P =0.42).Logistic regression showed that waist -hip ratio,hypertension,overweight,obesity and hypertriglyceridemia were risk factors of fatty liver,while daily alcohol consumption cannot be thought as risk factor yet. Conclusion Waist -hip ratio,hypertension,overweight -obesity and hypertriglyceridemia were the risk factors of fatty liver.Alcohol consumption could contribute to the prevalence of triglyceride and uric acid.

Objective To understand of work status and professional ability of ICU specialist nurse,test their specialist ability level,improve and enhance the specialist nurse management to maximize their roles in promoting the development of clinical nursing.Methods 38 ICU nurse specialists who have got the nursing credentials more than one year were surveyed through self-questionnaire about working conditions,including general conditions,work status,income,self-assessment of specialist ability in future.Results 100％ ICU trained the younger nurses,and discuss the nursing management and problems.36.8％ nurses participated clinical nursing and night shift,5.3％ nurses have never joined ward inspection.Rates of reaching the standard were higher and above the 90％ in those three aspects: practice in clinical work,guided teaching and providing information for family member.Grasp of academic knowledge (86.8％),theory teaching (86.8％) and providing academic knowledge for nursing (86.8％) needed to be improved.Paper searching and reading (65.8％),paper writing (57.9％) and research design (47.4％) were relatively lower.Conclusions Culturing and using the specialist nurses in ICU lack the program and rationality; Specialist nurses have vague role; talent team was lacked; pay status needs increased; research ability needed enhanced; admittance,training and using criteria were lacked.

Hydroxycamptothecin (HCPT) loaded PEG modified nanostructured lipid carriers (HCPT-PEG-NLC) and nanostructured lipid carriers (HCPT-NLC) were prepared by melt emulsification and homogenization method. The morphology, particle size and encapsulation efficiency of them were investigated. HCPT concentrations in plasma, heart, liver, spleen, lung, kidney and ovary were determined after iv of HCPT injection, HCPT-PEG-NLC and HCPT-NLC in mice. The targeting indexes of HCPT-PEG-NLC and HCPT-NLC were calculated. The transmission electron microscope imaging showed that HCPT-PEG-NLC and HCPT-NLC exhibited a spherical shape. The particle sizes of them were (88.6 +/- 22.5) and (127.2 +/- 43.4) nm. The encapsulation efficiency were (90.51 +/- 3.29)% and (84.37 +/- 2.81)%, respectively. After iv injection into the tail vein of mice, HCPT plasma concentrations of HCPT-PEG-NLC and HCPT-NLC were higher than that of HCPT injection at each sampling time. They also showed longer elimination time in every tissue. HCPT-NLC accumulated in endothelial system (RES), Re and Ce of it in liver and spleen were significantly higher than HCPT-PEG-NLC. HPCT-PEG-NLC prolonged circulation time and increased bioavailability of HCPT. MRT and AUC0-24 h of it were 19.80 and 17.02 times higher than those of HCPT injection. It also significantly reduced phagocytosis of RES, and showed lung targeting effect (Re and Ce were 14.51 and 41.35). To summarize, HCPT-PEG-NLC could prolong the circulation time of HCPT in vivo, and had the lung targeting effect. It was a promising carrier to increase therapeutic effect of HCPT in treating lung cancer.
Animals ; Antineoplastic Agents, Phytogenic ; administration & dosage ; blood ; chemistry ; pharmacokinetics ; Biological Availability ; Camptothecin ; administration & dosage ; analogs & derivatives ; blood ; chemistry ; pharmacokinetics ; Delayed-Action Preparations ; Drug Delivery Systems ; Drug Stability ; Female ; Lipids ; chemistry ; Lung ; metabolism ; Mice ; Mononuclear Phagocyte System ; physiology ; Nanoparticles ; Particle Size ; Phagocytosis ; drug effects ; Polyethylene Glycols ; chemistry ; Tissue Distribution

OBJECTIVETo evaluate effects of cypermethrin on the testis histology and testosterone, LH and FSH in adult male Sprague-Dawley rats.

METHODSThe intact adult male rats were randomly divided into five groups and were treated with cypermethrin at doses of 0, 7.5, 15, 30, or 60 mg/kg per day by oral gavage for 15-days. After the treatments, serum was collected for hormone assays. The testes, epididymides, seminal vesicles, and prostates were excised and weighed. The right testis was frozen for daily sperm production and the left one was processed for histopathology.

RESULTSDaily sperm production decreased significantly in 30 and 60 mg/(kg•day) groups. Testicular structure abnormalities included atrophic and distorted seminiferous tubules, deformed and disordered arrangement of germ cells, reduced germ cells, Sertoli cells and Leydig cells, vacuolization and multinucleated formations of spermatids in the cypermethrin-treated rats. Vacuolization was found in Sertoli cells and the deformed nucleus was noted in Leydig cells. Serum testosterone reduced significantly in 30 and 60 mg/(kg•day) groups. Serum FSH increased significantly in 60 mg/(kg•day) group.

CONCLUSIONCypermethrin induces impairments of the seminiferous tubules structure and spermatogenesis in the rats. The damages of the male reproductive system may be attributed to the imbalance of circulating testosterone.

Animals ; Epididymis ; drug effects ; Male ; Prostate ; drug effects ; Pyrethrins ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Seminal Vesicles ; drug effects ; Spermatogenesis ; drug effects ; Testis ; drug effects ; Testosterone ; blood

OBJECTIVETo investigate the clinical value of local regional administration of urokinase and argatroban through small saphenous vein (SSV) catheter in the treatment of acute deep venous thrombosis in the lower limb (LDVT).

METHODSFifty-six patients with acute LDVT were prospectively randomized into the study group (21 cases, 24 limbs) and control group (35 cases, 36 limbs) for treatment with urokinase and argatroban regionally administered via the SSV catheter and with the same agents given via the peripheral vein, respectively. The patients were examined for changes in serum fibrinogen (FBG) and D-dimer and the perimeter of the affected limbs, and the complications in relation to the agents were observed.

RESULTSBy corrected Chi-square test, the incidence of complications was significantly lower in the study group than in the control group (1/21 vs 4/36, χ(2)=1.92, P≤0.05). Wilcoxon's sign rank test suggested no statistically significant difference between the two groups in the total effective rate (95.8% vs 94.4%, V=0.52, P>0.05), but the total excellent rate differed significantly between them (83.3% vs 55.6%, V=2.36, P≤0.05). Serum FBG underwent no significant variations in the study group during thrombolysis (P>0.05), but decreased significantly in the control group (P≤0.05). The decreases in serum D-dimer and perimeter of the affected limbs occurred earlier in the study group than in the control group (P≤0.05).

CONCLUSIONRegional administration of urokinase and argatroban via small saphenous vein catheter can promote the thrombolytic effect and reduce the risk of hemorrhage in the treatment of LDVT.

Adult ; Female ; Fibrinolytic Agents ; Humans ; Injections, Intravenous ; Lower Extremity ; blood supply ; Male ; Middle Aged ; Pipecolic Acids ; administration & dosage ; therapeutic use ; Saphenous Vein ; Urokinase-Type Plasminogen Activator ; administration & dosage ; therapeutic use ; Venous Thrombosis ; drug therapy ; Young Adult

BACKGROUNDTissue-engineered heart valves have the potential to overcome the limitations of present heart valve replacements. This study was designed to develop a tissue engineering heart valve by using human umbilical cord blood-derived endothelial progenitor cells (EPCs) and decellularized valve scaffolds.

METHODSDecellularized valve scaffolds were prepared from fresh porcine heart valves. EPCs were isolated from fresh human umbilical cord blood by density gradient centrifugation, cultured for 3 weeks in EGM-2-MV medium, by which time the resultant cell population became endothelial in nature, as assessed by immunofluorescent staining. EPC-derived endothelial cells were seeded onto the decellularized scaffold at 3 x 10(6) cells/cm(2) and cultured under static conditions for 7 days. Proliferation of the seeded cells on the scaffolds was detected using the MTT assay. Tissue-engineered heart valves were analyzed by HE staining, immunofluorescent staining and scanning electron microscopy. The anti-thrombogenic function of the endothelium on the engineered heart valves was evaluated by platelet adhesion experiments and reverse transcription-polymerase chain reaction (RT-PCR) analysis for the expression of endothelial nitric oxide synthase (eNOS) and tissue-type plasminogen activator (t-PA).

RESULTSEPC-derived endothelial cells showed a histolytic cobblestone morphology, expressed specific markers of the endothelial cell lineage including von Willebrand factor (vWF) and CD31, bound a human endothelial cell-specific lectin, Ulex Europaeus agglutinin-1 (UEA-1), and took up Dil-labeled low density lipoprotein (Dil-Ac-LDL). After seeding on the decellularized scaffold, the cells showed excellent metabolic activity and proliferation. The cells formed confluent endothelial monolayers atop the decellularized matrix, as assessed by HE staining and immunostaining for vWF and CD31. Scanning electron microscopy demonstrated the occurrence of tight junctions between cells forming the confluent monolayer. Platelets adhesion experiments suggested that the neo-endothelium was non-thrombogenic. The expression levels of eNOS and t-PA genes in the neo-endothelium were quite similar to those in human umbilical vein endothelial cells.

CONCLUSIONSEPCs isolated from the human umbilical cord blood can differentiate into endothelial cells in vitro and form a functional endothelium atop decellularized heart valve scaffolds. Thus, EPCs may be a promising cell source for constructing tissue-engineered heart valves.

Animals ; Cell Proliferation ; Endothelial Cells ; cytology ; metabolism ; Heart Valve Prosthesis ; Heart Valves ; cytology ; metabolism ; ultrastructure ; Humans ; Immunohistochemistry ; Microscopy, Electron, Scanning ; Nitric Oxide Synthase Type III ; genetics ; metabolism ; Platelet Aggregation ; Reverse Transcriptase Polymerase Chain Reaction ; Stem Cells ; cytology ; metabolism ; Swine ; Tissue Engineering ; methods ; Tissue Plasminogen Activator ; genetics ; metabolism ; Umbilical Cord ; cytology

OBJECTIVETo evaluate the surgical techniques for acute left deep venous thrombosis (LDVT) secondary to left iliac vein compression syndrome (IVCS).

METHODSThirty-six patients with acute LDVT secondary to IVCS received inferior vena cava filter placement, and in 2 of the cases, stent implantation was canceled for acute episode of obsolete DVT. The remaining 34 patients underwent left femoral venotomy for iliofemoral thrombectomy with Fogarty catheter and distal femoral vein thrombus removal by sequential compression of the legs, followed by implantation of stent-graft (2 cases) or bare-metal stents (32 cases) in the left common iliac veins. With routine anticoagulation and thrombolytic treatments, the patients were regularly examined for postoperative blood flow in the affected limb.

RESULTSIn 2 of the cases undergoing bare-metal stent implantation, the residue thrombi were squeezed into the stent by balloon, which was managed subsequently with local thrombolysis. One patient with bare-metal stent implantation received a secondary stenting for posterior stent displacement. Three patients had self-limited bleeding due to decreased serum FBG. Significant improvements were achieved at 3, 6, 30 and 180 days postoperatively in the circumferences of the affected limb (P<0.05) and in the levels of D-dimer (P=0.011), and FBG level showed no significant variations (F=1.163, P=0.345). The total rate of excellent outcomes was 83.3% (26/34) with a total effective rate of 91.2% (31/34) in these cases.

CONCLUSIONSThrombectomy to revascularize the inflow tract and stent implantation to enlarge stenosed iliac veins are key issues in treatment of acute LDVT secondary to IVCS.

Femoral Vein ; surgery ; Humans ; Leg ; pathology ; May-Thurner Syndrome ; complications ; surgery ; Stents ; Thrombectomy ; Vascular Grafting ; Venous Thrombosis ; etiology ; surgery

OBJECTIVETo evaluate the effect of chewing sugar-free gum after sucrose challenge on dental plaque pH in situ.

METHODS16 healthy volunteers aged 23 - 32 years were screened as subjects. The pH of 48-hour dental plaque was measured using a Beetrode pH microelectrode when subjects chewed Extra sugar-free gum after sucrose challenge.

RESULTSDental plaque pH maintained at resting plaque pH when immediately chewed sugar-free gum after sucrose challenge. Chewing sugar-free gum at 5 min after sucrose challenge, dental plaque pH was raised from 5.59 (measured at 5 min after sucrose challenge) to 6.98 (measured at 10 min after sucrose challenge).

CONCLUSIONSChewing sugar-free gum after sucrose challenge can neutralize organic acid produced by bacteria in dental plaque and rapidly rise plaque pH.

Adult ; Chewing Gum ; Dental Plaque ; metabolism ; prevention & control ; Female ; Humans ; Hydrogen-Ion Concentration ; Male ; Sucrose