We have used jacalin, a lectin purified from Vietnamses Jackfruit to design J1- sepharose 4 B affinity column for studying IgA1 concentration from healthy and Hepato Cellular Carcinoma sera. The results obtained showed that IgA1 concentration from human Hepato Cellular Carcinoma serum (7.85+/- 0.80 mg/ml) is 2.76 times higher than that of healthy human (2.84+/-0.28 mg/ml). The use of modified ELISA technique for determination IgA1 concentration from sera indicated the same results in comparison with Affinity chromatography technique.
Immunoglobulin A ; Chromatography

Dys-1 and Dys-2 compounds were isolated and determined structure from extracts of n-hexane and dichloromethane of sponge Dysidea cinerea by normal and reverse phases of silica gel column chromatography. Dys-1 is a white crystallized agent. Through data and reference materials, the agent is determined as Isofucosterol (24-Stigmasta-5, 24(24')-dien-3β-ol). Dys-2 compound is a crystallized agent with crystal of white needle form. The compound is determined as 5, 8- epidioxycholest-6--en-3-ol. It is cyto-toxic against three tumor cell lines in human such as epithelium cancer, liver cancer, and uterus membrane cancer
Porifera ; Chromatography

BACKGROUND: We evaluated the performance of the TOSOH glycohemoglobin analyzer HLC-723GHb V A1c 2.2TM (TOSOH Corp. Kyoto, Japan), a recently introduced automated hemoglobin A1c (HbA1c) analyzer using high performance liquid chromatography (HPLC) method without sample pretreatment. METHODS: The performance characteristics evaluated were precision, linearity, comparison with VARIANTTM (Bio-Rad, Germany) and throughput following NCCLS evaluation protocols (EP5-T2, EP6-P, and EP9-T). RESULTS: The within-run and between-day CV's were 0.910 and 1.328 for low level (6.2%), 1.214 and 1.460 for middle level (8.5%), and 0.789 and 1.449 for high level (10.7%), respectively. We found the perfect linearity of HbA1c (%) from 6.5 to 10.2 (r2=0.9995). Comparison studies between A1c 2.2 and VARIANTTM yielded the following correlation equations; A1c 2.2TM = 0.9915 (VARIANTTM) + 0.1198 %HbA1c (r=0.9936, P < 0.0001). Throughput was 28.0 tests per hour for A1c 2.2TM compared with 15.2 tests for VARIANTTM, which were determined including red blood cell lysis time before sample loading for VARIANTTM. A1c 2.2TM did not need sample pretreatment. CONCLUSIONS: With the above results, A1c 2.2TM shows acceptable performance and is suitable for routine use in the clinical laboratory.
Chromatography, High Pressure Liquid ; Chromatography, Liquid ; Erythrocytes

High-performance countercurrent chromatography (HPCCC) coupled with reversed-phase high-performance liquid chromatography (RP-HPLC) method was developed to isolate dihydrophaseic acid 3′-O-β-D-glucopyranoside (DHPAG) from the extract of Nelumbo nucifera seeds. Enriched DHPAG sample (2.3 g) was separated by HPCCC using ethyl acetate/n-butanol/water system (6:4:10, v/v/v, normal-phase mode, flow rate: 4.0 mL/min) to give 23.1 mg of DHPAG with purity of 88.7%. Further preparative RP-HPLC experiment gave pure DHPAG (16.3 mg, purity > 98%). The current study demonstrates that utilization of CCC method maximizes the isolation efficiency compared with that of solid-based conventional column chromatography.
Chromatography ; Chromatography, Liquid ; Countercurrent Distribution ; Methods ; Nelumbo

No abstract available.
Chromatography* ; Mass Screening* ; Porphobilinogen*

No abstract available.
Chromatography, Liquid* ; Humans*

BACKGROUND: We evaluated the performance and analysis time of HLC-723 G7 (Tosoh corp. Tokyo, Japan) hemoglobin (Hb) A1c autoanalyzer. It utilizes cation exchange high performance liquid chromatography (HPLC) method and has a reduced analysis time compared with that of an earlier model HLC-723GHb V A1c 2.2(TM) (HLC-723GHb V, Tosoh corp. Tokyo, Japan). METHODS: We evaluated linearity, precision and comparison with HLC-723GHb V following NCCLS guidelines and counted the number of tests per hour to estimate analysis time. RESULTS: Linearity through the range from 5.8% to 13.9% was good (r2=0.9930, relative nonlinearity <2.5%). The within-run coefficients of variation (CVs) for groups of low, middle, and high level were 1.09%, 0.76%, and 0.68% and total CVs for each group were 1.60%, 0.91%, and 1.00%, respectively. Correlation equation between HLC-723 G7 and HLC-723GHb V was HLC-723 G7=1.0308 (HLC-723GHb V)-0.2896 %Hb A1c (r=0.9992, P<0.0001). Analysis time of HLC-723 G7 was 1.2 minutes per test compared with 2.1 minutes of HLC-723GHb V. CONCLUSIONS: HLC-723 G7 showed the acceptable performance and shortening analysis time therefore, it was suitable for reducing turn around time of Hb A1c assay.
Chromatography, Liquid ; Hemoglobin A, Glycosylated

A human urinary trypsin inhibitor (UTI) was purified by 80% amonium sulfat precipitation, affnity chromatography using trypsin cellulofine gel. Specificity inhibitory activity of solution after affinity chromatography was increase from 0.8 to 29.1 and its recovery was 20.8%. The reslt indicated that binding of trypsin to formyl- cellulofine and the affinity chromatography with trypsin cellulofine gel was successful. Capalary electrophoresis of urine, solutions before and after affinity chromatography also supported the above result.
Glycoproteins ; Chromatography, Affinity

Using direct condensation method meconin with isoquinolinium isodid salt, the authors had synthesized of bicuculin by a new method. With this method, an important intermediacy - erythro cordrastin isomer - was created with the greater rate in comparison with threo isomer. Two isomers were separated easily due to silicagel chromatography. The erythro isomer was demethylated by BBr3 reagent. Methylenation of tetrahydroxy compound provided bicuculline racemic. Separate the contrasts of bicucullin racemic by acid D (+) could help to obtain (+) bicucullin with high optical purify which were reached standards for next biological tests
Pharmaceutical Preparations ; Chromatography

The content of diosgenine in some species of dioscorea branch is determined by gas chromatography. This method is convenient and high confidence. Some species contain substantial diosgenine for production. This method can be applied for controlling the material in production.
Pharmaceutical Preparations ; Chromatography, Gas