Biomedical subjects

Xin Liu

Publications and source records attributed to Xin Liu.

186 records · Page 11Linked to original sources

PubMed2002

[Study on consistency of assessed results according to the Standard of Evaluated Injured Severity].

OBJECTIVE: To explore the consistency of assessed results according to Standard of Evaluated Injured Severity, finding out some factors that influenced appraisal conclusion. METHODS: 102 cases examined by Beijing Institute of Forensic Medicine and Science in 1998 were re-evaluated respectively by nine appraisers. RESULTS: The results showed that distinction of appraisal conclusion between appraisers in the same institute was small, but in different institute was big. The work experience and professional train were important to reduce errors. CONCLUSION: Standard of Evaluated Injured Severity strong take on character of profession. Veracity of assessed injured severity is related with unitive authoritative explanation, training and experience of appraiser.

Analysis of Variance↗

PubMed2002

Telomerase activity in urine in diagnosis and recurrence surveillance of urothelial carcinoma.

OBJECTIVE: To investigate the significance of telomerase activity in urine in the diagnosis and recurrence surveillance of urothelial carcinoma. METHODS: Telomerase activity in urine of 54 cases of urothelial carcinoma (urothelial carcinoma group) was estimated by polymerase chain reaction-enzyme-linked immunosorbent assay, and monitored continuously in 23 cases after tumor removal. 46 patients with benign urological diseases were also included as the control group. RESULTS: The telomerase activity in urine of patients with urothelial carcinoma increased significantly as compared with the control group (P < 0.001), decreased into the normal range after tumor removal, and rose again upon intravesical tumor recurrence before the screening of recurrent tumors by cystoscopy. The higher the grade of tumor, the higher the telomerase activity; no correlation could be found between the preoperative level of telomerase activity in urine and recurrence. CONCLUSIONS: The examination of telomerase activity in urine is helpful in the diagnosis of urothelial carcinoma and may be related to the differentiation degree of tumors. Its sensitivity is higher than that of cystoscopic examination and may become an important ancillary method in the screening of urothelial carcinoma recurrence.

Female↗

PubMed2002

[Direct determination of trace element arsenic in high purity nickel by GFAAS].

Determination of trace element arsenic in high purity nickel by GFAAS in STPF conditions is described in this paper. The dry time, ashing temperature and atomization temperature are obtained by optimization process. The standard solutions are matched to eliminate the influences of matrix nickel, and nickel is also as the chemical matrix modifier in the detected. The characteristic mass of the method is 1.9 pg, the average relative standard deviation is 1.4%, the recovery rate is in the range of 95%-103%.

Arsenic↗

PubMed2002

Sixty-one cases of angina pectoris due to coronary heart disease treated by external use of the paste of nitrum and realgar powder on zhiyang (GV 9).

In order to inquire into the therapeutic effects of Xiao Shi Xiong Huang San (the Nitrum and Realgar Powder), one of the Dunhuang Prescription, on angina pectoris due to coronary heart disease (APCHD), the authors have treated 61 cases of APCHD by externally applying paste of the powder on Zhiyang (GV 9), with another 30 cases of APCHD treated with the nitroglycerin paste on Zhiyang as the controls. The results showed that the total effective rate was 82% and markedly effective rate 31.2% in the treatment group (the Paste of Nitrum and Realgar Powder), and the total effective rate was 46.6% and markedly effective rate 23.2% in the control group (the nitroglycerin paste). The difference in therapeutic effects between the two groups was very significant (P<0.01), indicating that the therapeutic effect of the former was significantly superior to that of the latter.

Administration, Cutaneous↗

PubMed2000

Comparative study on characters and outcomes of patients injured from traffic accidents in different rank hospitals.

OBJECTIVE: To compare the characters and outcome s of patients injured from traffic accidents in different rank hospitals. METHODS: From 8 hospitals of ranks I-III, 1915 cases were sa mpled and divided into 4 groups. Injuries of all patients were accessed by the method of RTS, AIS-ISS-AP and ASCOT. RESULTS: (1) The higher rank of hospitals, the severer the pati ents' condition were. Mean ISSs in hospital ranks II and III were greater tha n 16, which were recommended as a standard of severe trauma. (2) Transportation of se vere patients to high level hospitals prolonged the pre-hospital duration by 5 -9 h. (3) Factors contributing to death were the trauma severity, complications, hospital ranks that reflect the quality of the medical care. CONCLUSIONS: (1) This sample of 1915 cases matches the condit ion of most Chinese hospitals in characteristics of traffic trauma patients. (2 ) Most Chinese hospitals can be divided into 3 degree of trauma center by a crite ria of ISS and the unexpected death. (3) Incidence of multiple injuries shows no significant difference in each rank of hospitals. (4) The relationship between the hospital rank and the quality of trauma care is significant. We suggest tha t a RTS=11 or ISS=9 be triaged to trauma center, and a 10% Ps (survival pr obability) less than the average Ps of a hospital be triage to higher level hosp itals.

Journal Article↗

PubMedDate not supplied

Jacaranone glycosides from Senecio scandens.

Bioassay-guided fractionation of the ethanol extract of Senecio scandens led to the isolation of four new compounds 1-4. These compounds were obtained as tautomeric mixture of alpha/beta epimers, but their structures were confirmed unambiguously by 1D and 2D NMR spectra and LC NMR technology. 1H NMR spectra of pure 1alpha and 1beta were furnished by HPLC NMR technology. Compounds 1-4 exhibited moderate cytotoxicities against five tumor cell lines.

Benzoquinones↗