Carcinoid Tumor ; pathology ; Groin ; Humans ; Laryngeal Neoplasms ; pathology ; Lymphatic Metastasis ; Male ; Middle Aged

Objective To develop a sensitive HPLC method for the determination of malachite green in fresh water. Methods The HPLC column of ZORBAX SB-C18 (250 mm?4.6 mm, 5 ?m) was employed and acetonitrile and acetate buffer (0.1 mol/L, pH=4.5, V∶V=80∶20) were taken as the mobile phase. The samples were tested at wave length of 588 nm after post-column oxidation with PbO2 flowed at 1.5 ml/min. Results The average recovery rate were 98.5% and 97.8% respectively at the water concentration of 2.0 ?g/L and 10.0 ?g/L,the relative standard deviations (RSD) were 11.2% and 8.0%,the least detection limit was 0.02 ?g/L. Conclusion The method is stable,sensitive and suitable for the detection of malachite green in water.

Objective To retrospective analyze the treatment of hallux valgus with the procedure of osteotomy of the base of the first metatarsal, combining with osteotomy of the base of the second and/or third metatarsal(s), and to study the indications and effects of this procedure. Methods 35 cases 56 hallux valgus feet were treated by operative procedure from January 1994 to December 2003. 26 cases 43 feet underwent the operative procedure of osteotomy of the base of the first metatarsal, 9 cases 13 feet with painful callus under the second and/or third metatarsal(s) head underwent osteotomy of the base of the first, second and/or third metatarsal(s). The axial and lateral films of all feet with loading were taken before and after operation. The change of anatomic indexes and AOFAS of the patient postoperatively were recorded and analyzed. Results In the group with osteotomy of the base of the first metatarsal, AOFAS score was 47.6?5.8 preoperatively, and 84.3?5.7 postoperatively. In the group with osteotomy of the base of the first, second and/or third metatarsal(s), AOFAS score was 44.7?5.7 preoperatively, and 85.7?4.5 postoperatively. There were significant differences between the preoperative and postoperative rontgenographic index and AOFAS in each group. Conclusion The operative procedure is effective. The operative procedure of osteotomy of the base of the first metatarsal can get good result in moderate and severe hallux valgus patients. Osteotomy of the second and/or third metatarsal(s) were recommended in cases with painful callus under the second and/or third metatarsal(s). Normal forefoot appearance and function can be restored by the procedure to reestablish the transverse arch.

Objective To investigate the cytotoxic effects of human γδT cells on hepatocellular carcinoma cells in vitro.Methods Normal human PBMC were activated by IPP and rhIL-2.The expansion of γδT cells were analyzed by flow cytometry.The concentration of interferon gamma in the supernatants was detected by ELISA.The cytotoxicity of activated lymphocytes against hepatocellular carcinoma cells were measured by the lactate dehydrogenase release assay in vitro.Results After PBMC activated by IPP and rhIL-2 for 10 days,the proportion of γδT cells were expanded from (4.34±1.79)% to (55.65±6.88 )%.The secretion of interferon gamma expanded significantly after PBMC stimulated by IPP,and reached its peak value at the seventh day.The secretion of interferon gamma is lower if it has no IPP.The activated lymphocytes stimulated by IPP were detected to have cytotoxicity in vitro against human hepatocellular carcinoma ceils.Conclusion The high proportion of γδT cells can be gained in human PBMC activated by IPP,PBMC stimulated by IPP can secret interferon gamma effectively and the activated γδT cells have high cytotoxlcity in vitro against human hepatocellular carcinoma cells.

0.05). Qs / Qt was significantly higher at 2 min of OLV than that during TLV in both groups ( P 0.05) . The difference in Qs / Qt at 10 min, 30 min and 60 min of OLV between the two groups was statistically significant ( P

With the concept of vascular cognitive impairment has been deeply recognized and the thorough studies of its pathogenesis,study reports on vascular cognitive impairment have been increasing in recent years.This article reviews the molecular mechanism and genetics of vascular cognitive impairment.

OBJECTIVETo investigate the effect of the anticoagulants on PRP quality, so as to clarify the appropriate anticoagulant used in PRP production.

METHODSThe microstructure change of platelets collected via heparin, citrate, acid citrate dextrose (ACD) and citrate-theophylline-adenosine-dipyridamole ( CTAD) was observed by TEM following time course. The extent of spontaneous activation of platelets in four groups was detected by measuring sP-selectin in plasma. The TGF-β1 release amount of activated PRP of four groups was measured.

RESULTSCTAD is superior to other anticoagulants in maintaining the integrity of platelet structures for a long time and preventing platelet spontaneous activation. ACD slightly surpassed heparin and citrate in above two aspects. ACD-PRP and CTAD-PRP released significantly more TGF-β1 compared with heparin and citrate.

CONCLUSIONSThe PRP quality and biological effects were strongly associated with the type of Anticoagulants. ACD and CTAD are optimal anticoagulants in PRP production for they can maintain platelet viability at a high level.

Adenosine ; pharmacology ; Anticoagulants ; pharmacology ; Blood Platelets ; drug effects ; physiology ; Citrates ; pharmacology ; Citric Acid ; pharmacology ; Dipyridamole ; pharmacology ; Drug Combinations ; Glucose ; analogs & derivatives ; pharmacology ; Heparin ; pharmacology ; Platelet Activation ; drug effects ; Platelet-Rich Plasma ; Theophylline ; pharmacology ; Transforming Growth Factor beta1 ; metabolism

Objective To determine the relationship between zinc and nutritional status or immunity in patients with end-stage renal disease undergoing continuous ambulatory peritoneal dialysis (CAPD). Methods Forty-five stable CAPD patients undergoing peritoneal dialysis were enrolled in this study. The dietary zinc intake and serum zinc levels were investigated, and the results were compared with the gender- and age-matched healthy populations (n = 45). The relationship between dietary zinc intake and serum zinc levels and subjective global assessment (SGA) score, blood cell counts, serum albumin (ALB), prealbumin (PA), C-reactive protein (CRP),and lymphocyte subsets were analyzed. Results The percentages of inadequate dietary zinc intake (P= 0. 007)and low blood zinc (P = 0. 036) were significantly higher in CAPD patients than in healthy group. CD8 levels were significantly lower (P = 0. 000) while CD4/CD8 ratio was significantly higher (P = 0. 033) in CAPD patients than in healthy group. In CAPD patients, correlation analysis showed that dietary zinc intake was significantly correlated with serum prealbumin levels (r = 0. 577, P = 0. 000), but was negatively correlated with SGA score (r = - 0.354,P = 0. 015) and CRP (r = - 0.354, P = 0. 015); however, it was not significantly correlated with lymphocyte subsets and CD4/CD8 ratio. Serum zinc level was significantly positively correlated with hemoglobin (r= 0. 411, P=0.005), hematocrit (r=0.345, P=0.023), WBC (r=0.318, P=0.035), SGA score (r=0.417, P=0. 005), and CRP (r=0.342, P = 0. 027), but was not significantly correlated with lymphocyte subsets and CD4/CD8 ratio. Conclusions Zinc deficiency is common among patients with CAPD. Adequate dietary zinc intake can facilitate protein synthesis and improve the overall nutritional status. High serum zinc concentrations are beneficial for the synthesis of hemoglobin and the improvement of anemia.

Objective To compare the response of haemodynamics and intraocular pressure (IOP) to laryngeal mask airway (LMA) and tracheal intubation (TT) in children with glaucoma.Methods A prospective,randomized study was conducted in 50 glaucomatous children,scheduled to undergo trabeculectomy and divided into LMA group (25 cases) and TT group (25 cases) by random digits table method.Endotracheal intubation or placement of the laryngeal mask operation time and the dosage of midazolam was noted in each patient.Heart rate (HR),mean arterial pressure (MAP),tip perfusion index (TPI),IOP were measured after anesthesia induction (T1),endotracheal intubation or placement laryngeal mask immediately (T2),endotracheal intubation or placement after laryngeal mask 1 min (T3),2 min (T4),3 min(T5),5 min(T6).Results There was no significant difference in endotracheal intubation or placement of the laryngeal mask operation time and the dosage of midazolam between two groups (P ＞ 0.05).Compared with T1,HR,IOP were increased at T2-T4,MAP was increased at T2-T3,TPI was decreased at T2-T5 in TT group,there was significant difference(P ＜ 0.05).There was no significant difference in HR,MAP,TPI,IOP among different points in LMA group (P ＞ 0.05).HR,MAP,IOP in LMA group at T2-T4 were lower than those in TT group [HR:(119.3 ±8.9),(117.6 ±8.5),(115.2 ±6.9) beats/min vs.(131.3 ±7.1),(128.1 ±6.8),(123.2 ± 8.6)beats/min,MAP:(36.9 ± 5.1),(37.1 ±4.8),(34.7 ±4.6) mmHg (1 mmHg =0.133 kPa) vs.(44.1 ± 4.9),(42.8 ± 5.5),(41.9 ± 7.1) mmHg,IOP:(27.6 ± 2.5),(27.0 ± 2.0),(25.9 ± 2.3) mmHg vs.(34.2 ± 2.2),(32.9 ± 1.6),(31.1 ± 2.2) mmHg],TPI at T2-T5 was higher than that in TT group (3.25 ± 0.28,2.99 ± 0.26,3.15 ± 0.31,3.40 ± 0.30 vs.2.69 ± 0.29,2.22 ± 0.27,2.41 ± 0.30,2.66 ± 0.33),and there was significant difference (P ＜0.05).Conclusion Insertion of LMA in glaucomatous children is not associated with significant changes in haemodynamics and IOP response and offers advantages over tracheal intubation.

Objective To observe the adipose-derived cytokine changes and aggravate cognitive impairment in olanzapine-induced obese rats caused by glucose metabolic disorder.Methods 20 rats fed with ordinary fodder were used as normal control group,olanzapine group of 20 rats fed with olanzapine(1.2 mg · kg-1) and ordinary fodder for 4 weeks.Successfully established experimental model rats induced by olanzapine after 4 weeks.Serum tumor necrosis factor α(TNF-α),interleukins 6 (IL-6) and C-reactive protein (CRP) contents were measured by Elisa.Serum glucose contents were determined by biochemical colorimetric method and blood lipid contents determined with automatic biochemical analyzer.Learning,memory capacity and escape latency were detected with Maze test.Results After administration 4 weeks,the levels of body weight,blood glucose and blood lipid in olanzapine group were higher than those in control group.The serum TNF-α((1.57±0.04) ng/ml),IL-6((127.47±11.38) pg/ml) and CRP ((2.68±0.06) mg/ml) in olanzapine group rised,compared with control group ((0.59±0.03) ng/ml,(96.58± 8.77) pg/ml and (1.86±0.04) mg/ml respectively),the differences were statistically significant(P＜0.05).Electric shocks and escape latency in olanzapine group were higher than those in control group (P＜0.05).The FBS had positive correlation with hs-CRP,IL-6 and TNF-α respectively (r=0.385,0.260,1.280; all P＜0.05).Conclusion Olanzapine can induce metabolic disturbance of blood glucose,blood hpid,and the increase of serum TNF-α,IL-6 and CRP levels in rats.Positive correlation is showed between TNF-of and FBS.Hyperglycemia can promote cell toxicity and leads to cognitive dysfunction in rats.