Biomedical subjects

X Ji

Publications and source records attributed to X Ji.

184 records · Page 11Linked to original sources

PubMedDate not supplied

Perinatal care in China.

China has a birth rate of 20/1000, maternal mortality of 48.8/100,000, perinatal mortality of 15-20/1000 in cities, and 30-35/1000 in rural areas, infant mortality of 34.68/1000 and a LWB rate of 6%. Among LWBI 50-60% are SGA. As a result the prematurity rate is also quite low, 3-4%, and the rate of VLBWI is only 0.3-0.4%. Therefore, attention should be paid first to bigger birth weight groups. Regionalized perinatal care is important in the cities, but the rural areas suffer more from low staffing levels and poor transportation. In view of the vast areas which are in need of techniques and the uneveness of the situation, sense of appropriate technology is very important. B-ultrasonic scanner versus gravidogram, FHR monitoring versus monitoring of fetal movement, and methods of keeping babies warm are discussed as examples.

China↗

PubMedDate not supplied

Analysis of flavonoids in Semen Cuscutae by micellar electrokinetic chromatography and high-performance liquid chromatography.

Five different flavonoids in Semen Cuscutae were determined for the first time by micellar electrokinetic chromatography (MEKC) and reversed-phase high-performance liquid chromatography (RP-HPLC). MEKC was carried out on a 68.5-cm fused-silica capillary using 0.035 mol/L sodium dodecyl sulfate and 0.02 mol/L borate-phosphate (pH 7.0) containing 10% methanol as the running buffer. RP-HPLC was performed on a 12.5-cm Hypersil C18 (Agilent Technologies, Palo Alto, CA, U.S.A.) column with a 0.025-mol/L phosphate acid (A) - methanol (B) solvent gradient. Both MEKC and HPLC are rapid, simple, and efficient. The results obtained using these techniques are compared. MEKC and HPLC can be complementary to each other for the quality control of Semen Cuscutae.

Calibration↗

PubMedDate not supplied

Malignant lymphomas in Beijing.

We report on 1,082 cases of malignant lymphomas from the files of the Department of Pathology, Chinese PLA General Hospital, Beijing. We found non-Hodgkin's lymphomas (NHL) in 980 cases (91%) and Hodgkin's disease (HD) in the remaining 102 cases (9%). Among the NHL, the diffuse type was seen in 955 cases (97.4%) and the follicular type in 25 cases (2.6%). Among the diffuse NHL, the pleomorphic type was most frequently found (263 cases or 26.8%), followed in frequency by the mixed small and large cell (163 cases or 16.6%). The large-cell cleaved and noncleaved immunoblastic was found in 139 cases (14.2%), small cleaved cell in 132 cases (13.5%), lymphoblastic convoluted and nonconvoluted in 72 cases (7.3%), the small lymphocytic type in 128 cases (13.1%), plasmacytoid type in 40 cases (4.1%), and Burkitt type in 18 cases (1.8%). Using immunohistocytochemistry, we found T-cell lymphoma in 53% and B-cell lymphoma in 47% of cases. The distinctive differences of malignant lymphomas types between China and Western countries suggest the possibility of a relationship to environmental factors.

China↗

PubMedDate not supplied

Helicobacter pylori-associated gastritis and gastric carcinoma in Beijing.

A retrospective study was performed on 500 consecutive gastric biopsies obtained from patients with a diagnosis of gastritis and gastric carcinoma. Overall, Helicobacter pylori was detected in 336 cases (67.2%); it was seen in 82.4% of patients with duodenal ulcer, 80.1% of patients with gastric ulcer, 76.1% of patients with chronic atrophic gastritis, 60.3% of patients with chronic superficial gastritis, and 32.1% of patients with gastric carcinoma. The gastric epithelium colonized by Helicobacter pylori showed characteristic changes including loss of the apical mucous portion of individual cells, dropout of epithelial cells, and erosions. There is a strong suggestion that the inflammation associated with Helicobacter pylori infection plays a role in the pathogenesis of gastric carcinoma.

Adult↗