Objective To establish a method for determination of lead in cosmetics. Methods Samples were digested. The lead content was detected by isochronous mercury-plating method with the condition of lead cation being enriched for 40 s at -1.20V(vs. SCE). Results The stripping potential peak of lead appeared at - 0. 20 V( vs. SCE) . The detection limit was 0.03 jug Pb. Six parallel determinations of a sample were done with the mean of 3.574mg/ kg and the relative standard deviation of 4. 1% . Recovery rates obtained by standard addition test ranged from 90% -100.5% . Conclusion The method is suitable for detecting lead in cosmetics.

Objective To observe the effect of midazolam (MID) on amino acid levels in cultured PC12 cells challenged by N-methyl-D-aspartate (NMDA), and to explore the possible protective action of midazolam which is an anesthetic. Methods Cultured PC12 cells were divided into control group, NMDA group, and MID group. In NMDA group, PC12 cells were challenged by 300?mol/L NMDA in vitro. In MID group, 3?mol/L or 30?mol/L of MID was added to the challenged PC12 cell culture, thus forming two subgroups. After being treated with NMDA 300?mol/L for 4 hours, the PC12 cells were collected, rinsed, levigated and centrifuged (12 000r/min for 20min, at 4℃), then the supernatant liquid was collected. The levels of amino acids were determined with high performance liquid chromatograpy (HPLC). Results After exposing to NMDA 300?mol/L for 4 hours, the level of glutamate released from PC12 cells rose significantly, whereas the level of glutamine, aparatate and glycine remained unchanged. In the presence of MID 3?mol/L and 30?mol/L for 4 hours, the level of glutamate was lowered significantly (P

A 67-year-old male patient was admitted because of "the right side nasal obstruction repeatedly for 4 years". He got nasal obstruction 4 years ago, especially for the right side nasal cavity, sometimes got blood in his nasal discharge, then the symptom relieved after accepting treatment in local hospital. During the 4 years, the symptom repeatedly occurrence. Three days before hospitalization, the CT examination indicated abnormal things in his nasal cavity and the bone of his nasal sinus had been destroyed. Some abnormal organism were sent to pathological examination, and the report indicated it is acinic cell carcinoma of salivary gland. During the nasal endoscope surgery, a red goiter was found in his nose with its surface crude and brittle. Then we cut the goiter by nasal endoscope, during the operation we find the bottom of the goiter is on the nasal septum. Two weeks after the operation, the patient received the radiation therapy. One year after the operation he doesn't get the abnormal symptom and the nasal MRI not found recidivation.
Aged ; Carcinoma, Acinar Cell ; surgery ; Endoscopy ; Humans ; Magnetic Resonance Imaging ; Male ; Nasal Cavity ; pathology ; Nasal Obstruction ; Nasal Septum ; surgery ; Nasal Surgical Procedures ; Paranasal Sinuses ; pathology ; Salivary Gland Neoplasms ; surgery ; Salivary Glands ; pathology

Objective To control the quality of Shujin Jiegu tablets by determining the content of dracorhodin in the preparation by HPLC.Method With dracorhodin as index,the content of dracorhodin in the preparation was determined by HPLC.Results Dracorhodin showed a good linear relationship in the range of 1.53～7.66 ?g,r =0.999 9.The average recovery was 98.64%,RSD=1.12%.Conclusion This method is simple,rapid,repeatable,and applicable to the quality control of the preparation.

Objective To establish the HPLC fingerprint of Taoren Xikang pills and provide the method for the quality control and evaluation of the preparation. Methods Methanol extracts of ten batches of Taoren Xikang pills were analyzed with HPLC-UV method. Analysis was performed on C18 column (4.6 mm× 250 mm, 5 μm) with the mobile phase of acetonitrile-water gradient eluted at the flow rate of 1.0 mL/min. The detection wavelength was 203 nm. Results A standard HPLC fingerprint procedure was developed for Taoren Xikang pills with 26 common peaks. The similarity of 10 batches of Taoren Xikang pills was not lower than 0.9. Conclusion The method is accurate, repeatable and can be used for the quality control of Taoren Xikang pills.

Objective To evaluate the role of high-dose chemotherapy combined with autologous hematopoietic stem cell transplantation in relapsed/refractory marginal zone lymphomas. Methods The transplant database was reviewed retrospectively from Tianjin Medical University Cancer Hospital identified 12 patients who underwent high-dose chemotherapy combined with autologous hematopoietic stem cell transplantation. Results Among the twelve patients who underwent autologous hematopoietic stem cell transplantation, the median duration of progression-free survival (PFS) was 104 months and the median duration overall survival (OS) was 117 months; 6 patients were still alive with disease-free. Conclusion High-dose chemotherapy combined with autologous hematopoietic stem cell transplantation is feasible to patients with relapsed/refractory marginal zone lymphomas, particularly to those insensitive to rituximabincluded combined chemotherapy.

Objective To analyse the efficacy of hysteroscopic resection and norethisterone in abnormal uterine bleeding.Methods 38 cases of submucos myoma of uterine body,26 cases of endometrium polyps and 16 cases of complex hyperplasis of endometrium were treated with hysteroscopic resection,and all the cases take norethisterone for one month before hysteroscopic resection and go on taking norethisterone for three months after operation.All the cases were followed up with the improvement of symptoms and the chang of uterine cavity.Results All the cases were followed up for 3～18 months after operation.The efficacy of submucous myoma of uterine body was 92.10%(36/38) and that of endometrium polyps was 84.61%(22/26) and that of complex hyperplasis of endometrium was 93.75%(15/16).Conclusion The treatment of hysteroscopic resection and norethisterone in submucous myoma,endometrium polyps and complex hyperplasis has advantages of satisfied results,slight trauma,fast recovery and fewer recurrence relapse.

To observe the effect of propofol on the change in neuron specific enolase(NSE) contents in the serum and cererospinal fluid(CSF) of rabbits suffering from brain injury, so as to explore the protective effect of propofol on the brain, 20 New Zealand rabbits were inflicted with brain injury and randomized into control group and propofol treatment group ( n =10 each). Samples of serum and CSF were collected before trauma and 4h, 24h, 48h, 72h and one week following trauma respectively. The contents of NSE in serum and CSF were measured by enzyme immunoassay (EIA) method. The results showed that the content of NSE in serum at 24h, 48h, 72h and one week, and that in CSF from 4h to one week after trauma in control group were elevated significantly as compared with those before trauma ( P

Objective To monitor and modulate the coagulation disorder during operation in patients undergiong allogeneic liver transplantation. Methods PT, TT, APTT, FIB, HB, PLT count, sonoclot coagulation and platelet function were measured dynamically in 10 patients during anesthesia and operation. Results After coagulants were used, the above parameters pertaining to coagulation function were improved obviously. All of above coagulation parameters were severely abnormal in the period from 30 minutes before anesthesia to 20 minutes after portal vein recirculation. The hypocoagulability was significantly improved at the end of operation by target supplementation of prothrombin complex, fibrinogen, fresh platelets, and other coagulants, complementing large amount of fresh blood plasma. Notably, severe hemorrhage and thrombosis leading to re-operation did not happen in all the recepients. Conclusion The relationship of the local hypercoagubility at the anastomosis and the systemic hypocoagulation should be concerned to prevent coagulation and thrombosis during operation of liver transplantation.

Objective To investigate the effects of dilution of whole blood in vitro with different amount of normal saline on blood coagulation.Methods Nineteen healthy adult volunteers were enrolled in the present study.Venous blood samples obtained from each volunteer were diluted with normal saline in saline/blood ratio(v/v) of 2∶8(20%),3∶7(30%),4∶6(40%),5∶5(50%) and 6∶4(60%).Undiluted blood was considered as control.Coagulability of each group was determined with Sonoclot coagulation and platelet function analyzer,including activated clotting time(ACT),clot rate(CR),time to peak(TP),maximal clot signal(MCS),and platelet function(PF).Results 1) ACT: Compared with control value,ACT was significantly shortened with 20% dilution(P