Carcinoma in Situ ; diagnosis ; pathology ; surgery ; Carcinoma, Transitional Cell ; diagnosis ; pathology ; surgery ; Cystectomy ; Humans ; Neoplasm Invasiveness ; Neoplasm Staging ; methods ; Urinary Bladder ; pathology ; surgery ; Urinary Bladder Neoplasms ; diagnosis ; pathology ; surgery

Adult ; Biomarkers ; blood ; urine ; Female ; Humans ; Male ; Manganese ; blood ; urine ; Middle Aged ; Occupational Exposure ; adverse effects ; Young Adult

Objective To investigate the anti-fatigue and anti-hypoxia effect of fermented Paecilomyces hepiali myceli-um (PHM) and to explore its mechanism.Methods Seventy-two naive Kunming male mice were randomly divided into Home, vehicle, modafinil( Mode) , low-dose PHM, moderate-dose PHM, and high-dose PHM groups.All mice were ad-ministrated with the drug or vehicle twice a day during a 14-day period.Except for the Home group, each groups was forced into the wheel fatigue device to receive a climb-run training at the time points of 40 min, 8 h, 24 h and 48 h, and to re-ceive an exhaustive training at the time point of 72 h after the last administration.The number of electric shocks was recor-ded during each training and the levels of muscle glycogen, liver glycogen, serum urea nitrogen, serum lactic acid, serum creatine kinase and blood ATP were detected after the exhaustive training using commercially available kits.In addition, 96 naive Kunming male mice were randomly and equally divided into the vehicle, low-dose, moderate-dose and high-dose PHM groups.Twelve mice in each group were chosen for the normal pressure anti-hypoxia experiment and the other 12 mice were used for the NaNO3 poisoning experiment.Results Compared with the vehicle groups, the PHM group showed a sig-nificant decrease in the number of electric shocks, improvement in biochemical parameters associated with fatigue, and an increased survival time in the anti-hypoxia and the NaNO3 toxicity tests.Conclusion PHM is potentially an effective alter-native for wild Cordyceps in the treatment of fatigue and hypoxia.

Objective To observe the efficacy of percutaneous vertebroplasty (PVP) combined with zoledronic acid in treatment of spinal metastatic carcinoma.Methods Fifty cases of spinal metastatic carcinoma were divided into control group and treatment group by random digits table method with 25 cases each.The control group was given zoledronic acid 4 mg,intervals of 28 d intravenous drip 1 time.The treatment group was given PVP besides zoledronic acid.The visual analog scale score,activity ability score and analgesic usage score after treatment for 3 months were observed and compared.The quality of life was evaluated and the occurrence of relapse of fracture was also recorded.Results After treatment for 3 months,the visual analog scale score,activity ability score and analgesic usage score were (2.00 ± 0.17),(2.12 ± 1.38),(1.47 ± 0.10) scores in treatment group,and (7.84 ± 0.18),(3.21 ± 0.13),(3.30 ± 0.09) scores in control group,and there were significant differences between two groups (P ＜ 0.01 or ＜ 0.05).The occurrence of relapse of fracture was 2 cases (8％,2/25) in treatment group and 9 cases (36％,9/25) in control group,and there was significant difference between two groups (P ＜ 0.05).Conclusions PVP combined with zoledronic acid in treatment of spinal metastatic carcinoma has many advantages such as small incision,short surgery time and rapid relief from pain.It can obviously improve the quality of life,and it is worthy of spreading in the clinic.

Objective To determine the expression differences of Basigin(BSG)mRNA between early ischemic myocardium(EIM) and non-ischemic myocardium(NIM) in rats and then to evaluate the possibility of BSG examination in ischemic myocardium accidents occurred in forensic medicine. Methods Real-time polymerase chain reaction (RT-PCR) technique was applied for detecting the expression of BSG mRNA in EIM and NIM of rats at 15min, 30min, 1h and 2h post myocardial ischemia, and in sham operation(SO) group. Results Compared with NIM, SO and control groups, expression of BSG mRNA decreased after 15min when myocardium ischemia occurred; compared with SO, it was of 0.5 folds when 1h(P<0.5), and rebounded to SO level when 2h. Conclusion BSG could be involved in protection and myocardial remodeling in early ischemic myocardium, and may serves as a biomarker of early ischemic myocardium.

Abstract: Objective　To determine the rate of nasal carriage Staphylococcus aureus among healthcare workers in Department of Infectious Diseases department of the First Affiliated Hospital of Xi'an Jiaotong University Hospital, and to perform characterization on isolated strains. Methods　A cross-sectional study was performed on 86 healthcare workers from February 2022 to June. Nasal swabs were collected from the healthcare workers, and S. aureus were identified after incubation. Antibiotic susceptibility, including chlorhexidine and mupirocin, was assessed by disk diffusion and minimal inhibitory concentration method. The PCR technique was used to detect the biocide resistance genes (qacAB, smr, lmrS mepA, and sepA), virulence genes (pvl, fnbA/fnbB, sea, seb, sec, sed, tst, eta, etb) and mecA gene. SCCmec typing and multilocus sequence typing was performed. For mupirocin-resistant strains, PCR amplification and sequencing were used to identify whether the strains had ileS gene mutations or carried resistant genes (mupA and mupB). Results　S. aureus was isolated from 37 of the 86 healthcare workers (43.02%) , including 13 methicillin-resistant Staphylococcus aureus (MRSA) strains. The strains showed low resistance rates to levofloxacin (2.70%, 1/37), chloramphenicol (8.11%, 3/37), tetracycline (8.11%, 3/37), gentamicin (10.81%, 4/37), and ciprofloxacin (10.81%, 4/37). A total of 17 strains were identified as multidrug-resistant strains. Four SCCmec types were identified in MRSA strains, with the type II being the most frequent (53.85%, 7/13), followed by type IV (30.77%, 4/13). ST59 (46.15%, 6/13) was the most frequent among MRSA strains, while ST5 (41.67%, 10/24) was the most frequent among methicillin-susceptible S. aureus (MSSA) strains. sea was the most frequent virulence gene (56.76%, 21/37). sepA and mepA were detected in all 37 isolates. One Staphylococcus aureus strain was not sensitive to chlorhexidine, two strains had the missense mutation V588F (G1762T) and showed low level resistance to mupirocin, and one strain carrying mupA gene was highly resistant to mupirocin. Conclusion　The nasal colonization rate of Staphylococcus aureus among healthcare worker in the investigated hospital was high, indicating a risk for nosocomial infections. Strengthened monitoring and decolonization treatment should be carried out to reduce these risks.

Objective To analyze the expression level of HSP72 and HSP73,the subtypes of HSP70, in peripheral blood lymphocytes from lung carcinoma patients on both basic and heat injury conditions,and to explore the significance of HSP70 in the development of lung cancer.Methods Lung cancer patients were selected'as experimental group,and the health people with similar age,gender,vocational history and inhabi- tation to the experimental group were chosen as control group.The blood lymphocytes from both groups were isolated,cultured and treated with heat injury at either 37℃or 42℃.The expressions of HSP72 and HSP73 in the isolated lymphocytes were determined by Flow Cytometry.Results There were much higher expressions of HSP72 and HSP73 in control group(21.97?2.40 vs 12.77?0.66)than which in experimental group(HSP72 19.0?2.12 vs HSP73 11.74?0.68,P

Objective To analyze the occurrence of traumatic carotid cavemons fistula (TCCF) resulted from the fracture of basilaris cranii, in order to find out the related factors to outcomes and to discuss the approaches to improving prognosis.Method Data of 312 patients with the fracture of skull base complicatcd with TCCF con-firmed angiography from 1999 to 2005 were analyzed. These patients were classified into patients with disable and patients without disabed. The factors potentially impacting on outcomes were analyzed. Results The overall inci-dence of TCCF in 312 patients with fracture of basilaris cranii was 3.8% .The incideucs of TCCF occurred in pa-tients with the fracture of anterior fossa, middle fossa and posterior fossa accounted for 2.4%, 8.3 % and 1.7 %, respectively. Between two cohorts of patients, there were no difference in age, gender, number of embelization proce-dares performed and the time from injury to appearence of the first symptom except the differencc in time from ap-pearence of the first symptom to the intravascular embohzation performed (P>0.05). Conclusions A relatively high incidence of TCCF occurs in patients with middle fossa fractures, especially those with transverse or oblique fractures. Prompt diagnosis and intervention can not be emphasized in case of patients with TCCF, and non inva-sive techniques for the early detection of TCCF under certain circumstance after brain or facial trauma should be considered so as to avoid a miss in the early diagnosis of middle fossa fracture to ensure favourable outcomes.

AIMTo elevate the encapsulation efficiency, decrease the burst release and improve the release of protein entrapped in poly (lactic-co-glycolic acid) (PLGA) microspheres. The bovine serum albumin (BSA) composite microspheres of alginate-chitosan-PLGA were prepared and the release characteristics of BSA from this composite microspheres were studied.

METHODSThe much smaller calcium alginate microcapsules were first prepared by a modified emulsification method in an isopropyl alcohol-washed way and coated with chitosan, then the alginate-chitosan microcapsules were further entrapped in PLGA to form the composite microspheres. The protein concentration was determined using a BCA protein assay kit. The release profiles were changed with various formulation factors.

RESULTSThe average diameter of the composite microcapsules was about 30 microm. Comparing with 60% to 70% of the conventional PLGA microspheres, the average encapsulation efficiency was more than 80%, and the burst releases in phosphate buffer solution of the composite microspheres decreased from 40% and 50% to 25% and further to 5% in saline solution.

CONCLUSIONThe novel composite microspheres were prepared, the drug encapsulation efficiency increased and the burst release decreased. The desired release profiles could be obtained by regulating the ratios of PLG and PLA in the composite microspheres.

Alginates ; chemistry ; Chitosan ; chemistry ; Drug Delivery Systems ; methods ; Lactic Acid ; chemistry ; Microspheres ; Particle Size ; Polyglycolic Acid ; chemistry ; Polymers ; chemistry ; Serum Albumin, Bovine ; chemistry

Objective To investigate the role of T-type calcium channel in lidocaine-induced neuronal cytotoxicity . Methods SH-SYSY cell line was a gift from cell biology laboratory of our medical university. The cells were cultured in DMEM liquid culture medium at 37℃ in incubator filled with 5% CO2 , and randomly divided into 4 groups ( n = 66 each) : control group (group C)and M, L and ML groups were exposed to 5 μmol/L mibefradil (a T-type calcium channel blocker), 10 mmol/L lidocaine and 5 μmoL/L mibefradil + 10 mmol/L lidocaine for 24 h. Cell morphology was examined by electronic microscopy at 24 h of drug exposure. Cell viability (by MTT) and neuronal apoptosis (by flow cytometry) were detected immediately before and at 1, 6, 12 and 24 h of exposure to mibefradil or/and lidocaine.Results In C and M groups, the cells demonstrated dendritic protrusions, enlarged nerve processes and dense lattice. After being exposed to lidocaine for 24 h, the dendritic protrusions disappeared,the cells decreased in size, shrinked and became round; the cell viability was significantly decreased while the neuronal apoptosis increased. The lidocaine-induced changes were significantly attenuated by co-incubation with mibefradil. ConclusionT-type calcium channel is involved in lidocaine-induced neuronal cytotoxicity.