OBJECTIVE: To investigate the myeloid differentiation factor 88 (MyD88) expression in laryngeal carcinoma and its clinical significance. METHOD: Fifty-one patients with laryngeal carcinoma were collected, and all patients were confirmed by pathological diagnosis results. The expression of MyD88 protein was detected by immunohistochemical method in laryngeal cancer and its adjacent tissues to investigate the correlation among MyD88 expression, clinicopathological characteristics and prognosis of patients. RESULT: The positive expression rate of MyD88 in laryngeal cancer tissues was 68.6%, significantly higher than that in normal tissues adjacent to carcinoma of which positive expression rate was 11.8%; MyD88 positive rate had nothing to do with laryngeal cancer patients age, sex, differentiation and tumour location (all P > 0.05), but correlated with clinical stage (P < 0.01) and lymph node metastasis (P < 0.05). In addition, the study also found that the expression of MyD88 quantity was inversely proportional with the five-year survival rate. The survival rate of patients with higher expression of MyD88 was significantly lower than that of patients with lower expression (P < 0.05). CONCLUSION MyD88 may be an important participant in the pathogenesis of laryngeal carcinoma, MyD88 targeted therapy may improve the prognosis of patients with laryngeal cancer.
Humans ; Laryngeal Neoplasms ; metabolism ; pathology ; Lymphatic Metastasis ; Myeloid Differentiation Factor 88 ; metabolism ; Prognosis ; Survival Rate

AIM: To develop a rapid HPLC method for quality control of traditional Chinese medicinal ingredients consisted of citrus flavonoids, naringin, hesperidin, neohesperidin, sinensetin and nobiletin. METHODS:Gradient elution with non-salt mobile phase ( methanol and water only) HPLC method on a Kromasil column ( 100-5C18-250A, 4.6 mm ×250 mm, 5 μm, C18 reverse phase) with peaks identification through DAD full UV wavelength scan. UV 284 nm and 332 nm profiles were observed. RESULTS: Satisfactory resolution, linearity, 95%～ 102% of recovery and 1.88 ～ 2.93% of repeatability were obtained for those five citrus flavonoids. Content of 6 Citrus aurantium L. based TCM ingredients were analyzed and identified. CONCLUSION: Rapid HPLC test method on citrus flavonoids was developed and can be in LC-MS identification.

BACKGROUND: Cleistocalyx operculatus is a dried alsbastrum of myrtle. It is reported that cleistocalyx operculatus extracts can improve cardiac contraction through inhibiting the activity of Na+/K+-ATPase, and decrease rate of contraction. Do cleistocalyx operculatus extracts have the biological activity of antioxidation?OBJECTIVE: To observe the effects of cleistocalyx operculatus on oxidative injury of PC12 nerve cells induced by H2O2.DESIGN: Non-randomized controlled study.SETTING: State Key Laboratory of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology.MATERIALS: The experiment was conducted at New World Institute of Biotechnology, State Key Laboratory of Bioreactor Engineering of East China University of Science and Technology, from May to November 2002.Eight adult male Kunming mice were selected. PC12 nerve cells were supplied by Shanghai Cell Institute of the Chinese Academy of Sciences.METHODS: Model of oxygenic injury of PC12 nerve cells was estabPC12 cells were cultured in 96-well plates. Cleistocalyx operculatus was diluted with RPMI1640 culture medium into five concentrations of 0.001,0.01, 0.1, 0.5 and 1 g/L with 3 wells in each concentration; each well had 2×103 cells. Blank control group, or non-drug culture medium group, was set. Under the standard condition, cells were cultured for 48 hours and ascells were inoculated in 96-well plate with the density of 2×103 for 24-hour wall adhering, and then divided into normal control group (normal cell without H2O2 or cleistocalyx operculatus extracts), 0, 0.01, 0.1, 0.5 and 1 g/L cleistocalyx operculatus. Cells in all groups except normal control group were treated with 200 μmol/L H2O2 at 37℃ for 3 hours, then cleistocalyx operculatus of various concentrations was added and survival rate was asfree radicals: PC12 cells with oxygen-derived free radicals were treated in the same way as done for cell survival rate assay and measured with CDCFH staining method.fect of cleistocalyx operculatus extracts on intracellular and extracellular oxygen-derived free radicals in PC12 nerve cells induced by oxidative injury.operculatus could protect nerve cells; however, at 0.055-1.00 g/L the effect on cell growth did not significantly differ from that of blank control extracts had no protective effect on the injury of PC12 nerve cells induced by H2O2. At 1.00 g/L, it had strong plerosis for oxidative injury of PC12 and extracellular oxygen-derived free radicals in PC12 nerve cells was increased; however, at 0.01 g/L concentration of cleistocalyx operculatus extracts, the level was lower than that in model group.dation of membrane lipid of hepatic microsome, but also protect against oxcleistocalyx operculatus extracts is related to its concentration. At 1.00 g/L,it has great capacity of oxidation plerosis, and at 0.01 g/L it can decrease the level of oxygen-derived free radicals inside and outside cells.

Objective To establish a new methA of detecting vWF function. Methas The capability of vWF to bind collagen was evaluated with ELISA. Results The assay′s sensitivity was 0.001 U/ml. Coefficient of variation for inner-batch and inter-batch were 3.34 and 6.70 respectively.The vWF:CBA value of plasma was(90.24?22.87)% in 20 normal subjects. The vWF:CBA value was (31.94?27.36)% in 54 vWD, (35.22?20.02)% in 10 type 1 vWD, (8.74?6.38)% in 10 type 2A vWD and (0.70?0.58)% in 6 type 3 vWD,the values of all four vWD groups were lower than that of normal group( P

Thirty-six middle schools' boys, 14 to 19 years of age are selected as subjects. Most of them have been previously found to show symptoms associated with riboflavin deficiency. Their riboflavin intake is calculated to be about 0.4 mg per person per day.A one-hour urine sample is collected at S a. m. Immediately after collection, the boys are subjected to a 2 mg riboflavin loading test administered orally. Hourly urine samples' are collected for the four hours directly following the intake.The subjects are divided into 4 groups with 8 to 10 students in each group. Each student in group I is given orally a daily riboflavin supplement of 0.5 mg; group II, 1.0 mg; group III, 1.5 mg; and group IV receives no riboflavin supplement, but ointment treatment for scrotal dermatitis is applied. The procedure is carried out for a period of 14 days. The boys eat the ordinary school food and participate in the usual school activities.At the end of the 14-day period, a 1-hour urine sample is again collected. Another 2 mg loading test is performed, hourly urine samples being collected for 4 hours. All the urine samples are preserved with glacial acetic acid and toluene and stored in an electric refrigerator. The Lactobacillus casei method is used for the analysis of riboflavin.The results of the one-hour urine riboflavin analysis agree well with the dietary survey, showing very low values before the supplement, averaging 1.4 micrograms for the hour. After the administration of the supplement for two weeks, the riboflavin content in the one-hour urine samples increases stepwise with the increase in supplement, the highest being 11.4 for the 1.5 mg supplemented group. No increase is observed in the group IV using ointments.The 4-hourly urinary riboflavin excretion following the administration of the 2 mg load averages over per cent before the supplement and increases to 11.5, 15.6 and 17.8 per cent for the 0.5, 1.0 and 1.5 mg supplemented groups respectively. The curves in Fig. 1 show the hourly excretion of the 3 groups before and after supplementation.Clinical observations show that supplementation of 1 mg or more relieves some of the deficiency symptoms.It is suggested that in addition to the daily intake of about 0.4 mg 時iboflavin in the diet, 1.5 mg more should be added to keep the middle school boys in optimal riboflavin nutrition.

Tetanus is caused by the extremely toxic neurotoxin produced by clostridium tetan i. This toxin shows some similarities with snake venom, both being neur otoxic and having somewhat similar functional groups in their molecular structure and so on. Because of these we decided to use JiDesheng antivenom tablets in the treatm ent of tetanus. Since 1987 we have successfully treated 10 cases of tetanus and ideal results were obtained. This report describes 3 typical cases.

OBJECTIVETo cultivate human mesenchymal stem cells (MSC) derived from fetal bone marrow and examine their pluripotentiality.

METHODSBone marrow mononuclear cells from human fetal femur were collected by Percoll gradient centrifugation. The low density cells including MSCs were cultivated and expanded in MSCGM media. The characteristics of the multipotent MSCs were observed by implanting them into nude mice for 4 weeks.

RESULTSHuman fetal marrow MSCs were successfully cultivated and differentiated in vivo into many kinds of tissues such as bone, cartilage, adipose, skeletal muscle and tendon-like tissue.

CONCLUSIONHuman fetal marrow MSCs were multipotent stem cells.

Animals ; Bone Marrow Cells ; cytology ; Cell Culture Techniques ; methods ; Cell Differentiation ; Cell Division ; Cell Transplantation ; methods ; Cells, Cultured ; Humans ; Mesoderm ; cytology ; Mice ; Mice, Nude ; Stem Cells ; cytology ; Transplantation, Heterologous

Objective To detect plasma interleukins-35 (IL-35 )level in the patients with active tuberculosis complicated with bronchiectasis and to analyze its clinical significance.Methods Peripheral blood of patients with active tuberculosis from depart-ment of Dongguan 6th People′s hospital were collected,assigned to the active tuberculosis complicated with bronchiectasis group and active tuberculosis group.The healthy volunteers served as the control group.The plasma IL-35 level was measured by ELISA, and peripheral blood neutrophils and lymphocytes were detected by hematology analyzer.Results The levels of plasma IL-35 signif-icantly increased in both patients with active tuberculosis complicated with bronchiectasis and patients with active tuberculosis.The level of plasma IL-35 of patients with active tuberculosis complicated with bronchiectasis was significantly higher than that of the patients with active tuberculosis.The absolute value and percentage of peripheral blood neutrophils of patients with active tubercu-losis complicated with bronchiectasis were significantly higher than those of healthy volunteers.However,the percentage of periph-eral blood lymphocytes of patients with active tuberculosis complicated with bronchiectasis was significantly lower than that of healthy volunteers.Pearson correlation analysis showed that the absolute value of peripheral blood neutrophils of patients with ac-tive tuberculosis was positively correlated to the level of plasma IL-35.Conclusion IL-35 may play an important role in the progres-sion of active tuberculosis complicated with bronchiectasis.The determination of IL-35 may be helpful to the diagnosis of patients with active tuberculosis complicated with bronchiectasis.

Objective: To explore and discuss the relationship between emotional intelligence and stress perception and adaptive ability of undergraduates majoring in nursing, and analyze whether stress perception plays an intermediary role in the relationship between emotional intelligence and adaptive ability. Methods: A convenient sampling method was used to investigate 400 nursing undergraduates from 2 universities in Changchun. The survey tools were general information questionnaire, Emotional Intelligence Scale, Chinese version Perceived Stress Scale and College Student Adaptability Inventory. Results: The emotional intelligence of nursing undergraduates was above average level (3.63±0.47) points, the perceived stress was below average level (2.84±0.42) points, and the adaptability was above average level (3.48±0.51) points. And the emotional intelligence was positively correlated with the adaptability (r=0.467, P<0.01), and the stress perception was negatively correlated with the adaptability (r=-0.519, P<0.01). The Perceived stress played partial intermediary role in the relationship between emotional intelligence and adaptability and the mediating effect accounts for the total effect was 22.65%. Conclusion The adaptability and nursing undergraduates′ emotional intelligence and perceived stress was closely related, and perceived stress could mediated the relationship between emotional intelligence and adaptability.

OBJECTIVE: To report on a novel weak D type identified in a Chinese individual. METHODS: Peripheral blood sample was collected for a voluntary blood donor with weakened expression of D antigen. Routine serological testing was carried out to determine the D, C, c, E and e antigens of the Rh blood group. A D-screening kit was used to analyze the RhD epitopes. The 10 exons and flanking intronic regions of the RHD gene were sequenced. The zygosity of RHD was determined with a sequence-specific primer PCR method. RESULTS: A novel RHD allele, RHD (1022T>A), was found in the subject with a weak D phenotype. Serological testing of the RhD epitopes has coined with the weak D phenotype. CONCLUSION A novel weak D allele has been identified in Chinese population.
Alleles ; Asian Continental Ancestry Group ; China ; Exons ; Genotype ; Humans ; Introns ; Rh-Hr Blood-Group System ; genetics