Effectiveness of CLAT Protocol for Treating Patients with Refractory Acute Myeloid Leukemia / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To explore the clinical efficacy and toxicity of CLAT protocol (cladribine, cytarabine and topotecan) for treating patients with refractory acute myeloid leukemia (R-AML).</p><p><b>METHODS</b>A total of 18 patients with R-AML (median age 37 years, range 18 to 58 years; male n = 16, female n = 2) were treated with CLAT protocol, which consisted of cladribine 5 mg/m(2)/d, i.v. on days 1-5, cytarabine 1.5 g/m(2)/d, i.v. on days 1-5, topotecan 1.25 mg/m(2)/d, i.v. on days 1-5 and G-CSF 300 µg/d subcutaneous injection on day 6 until neutrophile granulocyte recovery.</p><p><b>RESULTS</b>Out of 18 patients 2 died of severe infection before the assessment. Among 16 evaluated patients, 10 (55.6%) achieved complete remission (CR), and 2 (11.1%) achieved partial remission (PR), the overall response rate was 66.7%, the rest 4 patients did not respond (NR). The median overall survival time and DFS for the CR patients was 9.5 months (95%CI: 6.7-16.64) and 9.5 months (95%CI: 6.1-16.7) respectively. The 1 year OS and DFS rates were 45% and 46.9%, respectively. All patients developed grade 4 of granulocytopenia and thrombocytopenia, the median duration was 13 (range 2 to 21) days and 12 days (range 2 to 21), respectively, all patients developed infection, 2 patients died of severe infection. The most common non-hematological side effects included nausea, vomiting, diarrhoea, rash, aminotransferase or bilirubin elevation and were grade 1 to 2.</p><p><b>CONCLUSION</b>The CLAT protocol seems to have promising for the treatment of refractory AML patients, and patients well tolerated. This CLAT protocol offers an alternative treatment for R-AML patients who received severe intensive treatment, especially with anthracycline-containing chemotherapy.</p>

Determination of histatins 5 in salivary by reversed-phase high performance liquid chromatography method with ultraviolet detection / 华西口腔医学杂志

<p><b>OBJECTIVE</b>The determination method of histatins 5 in human saliva with reversed-phase high performance liquid chromatography (HPLC) was developed.</p><p><b>METHODS</b>Salivary samples were collected and diluted with phosphate buffer (pH 2.5). The upper solution was determined with HPLC. Phosphate buffer (pH 3.5) of the mobile phase and C18 column was used throughout the experiment. The detection wavelength was 276 nm.</p><p><b>RESULTS</b>The linear ranges were 1.0-50.0 microg x mL(-1). The detection limit was 0.12 microg x mL(-1). The relative standard derivations (RSD) of standard solution for reserved time and peak area were 0.68% and 4.13% respectively. The proposed method was applied for analysis of salivary samples and the satisfactory results were obtained. RSD for sample determination was 4.41% and the average recoveries were 88.4%-109.0%.</p><p><b>CONCLUSION</b>The method was quick, simple and accurate. Analytical time was less than 15 min. It was adapted for analysis of salivary histatins 5 in salivary samples.</p>

Determination of organic acids in dental plaque with high performance liquid chromatography / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To establish determination method of formic acid, lactic acid, acetic acid and succinic acid in dental plaque with high performance liquid chromatography (HPLC).</p><p><b>METHODS</b>After the samples were centrifuged, 2 microL supernatant was transferred to a 1 mL centrifuge tube and diluted in water, then was determined with HPLC. The mixture of phosphate buffer and methanol (97:3) as mobile phase throughout the experiment. The determination of organic acid was performed on Phenomenex C18 column and at their maximum absorption wave.</p><p><b>RESULTS</b>The linear ranges of formic acid, lactic acid, acetic acid and succinic acid were 0.110-500, 0.049-500, 0.047-500, 0.084-500 microg/mL. The detection limits were 0.110, 0.049, 0.047, 0.084 microg/mL. The relative standard derivation were 9.5%, 7.9%, 4.3%, 4.2%. The average recoveries of samples were 82%-112%, 82%-102.5%, 90%-115%, 80%-110%.</p><p><b>CONCLUSION</b>The method was simple, quick and adapt for analysis of organic acid in dental plaque.</p>

Changes of the glutamate transporter EAAC1mRNA expression and injuried nerve cell apoptosis in rat with cerebral ischemia/reperfusion injury treated by mild hypothermia / 中华物理医学与康复杂志

Objective To investigate the changes in the glutamate transporter EEAC1 mRNA expression and the injured nerve cell apoptosis after rat cerebral ischemia/reperfusion injury is treated with mild hypothermia. Methods The middle cerebral arteries(MCA)of Sprague-Dawley rats were occluded for 30 minutes,and reper- fused for 90 minutes.Using DIG-labeled CRNA probe and TUNEL,the positive rate of glutamate transporter EE- AC1 mRNA expression and apoptotic cell rate were determined in the sham-operated group,the control group and the mild hypothermia group,respectively.Results The positive rate of EEAC1 mRNA expression and apoptotic cell rate were significantly lower in sham-operated group than those in the control group(P