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Volumn 16, Issue 3, 2006, Pages 573-580

Isolation and cholinesterase-inhibition studies of sterols from Haloxylon recurvum

Author keywords

Acetylcholinesterase; Butyrylcholinesterase; Chenopodiaceae; Enzyme inhibition; Haloxylon recurvum; Sterols

Indexed keywords

24 ETHYLCHOLEST 6 ENE 3,5 DIOL; 24 ETHYLCHOLEST 7 ENE 3,5,6 TRIOL; 5ALPHA,8ALPHA EPIDIOXY ETHYLCHOLESTA 6,9(11),22 TRIENE 3 BETA OL; ACETYLCHOLINESTERASE; CHLOROFORM; CHOLINESTERASE; CHOLINESTERASE INHIBITOR; ETHYLCHOLESTA 7,9(11),22 TRIENE 3BETA OL; GALANTAMINE; HALOXYSTEROL A; HALOXYSTEROL B; HALOXYSTEROL C; HALOXYSTEROL D; LAWSARITOL; STEROL DERIVATIVE; UNCLASSIFIED DRUG;

EID: 29544434906     PISSN: 0960894X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.bmcl.2005.10.042     Document Type: Article
Times cited : (50)

References (39)
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  • 6
    • 29544436946 scopus 로고    scopus 로고
    • note
    • Plant material. The whole plant Haloxylon recurvum Bunge ex Boiss was collected from Cholistan desert near district Bahawalpur (Punjab), Pakistan, in October, 2001, and identified by Dr. Muhammad Arshad, Plant Taxonomist, Cholistan Institute of Desert Studies, Islamia University Bahawalpur, where a voucher specimen (020/CIDS/IUB/PK) has been deposited.
  • 7
    • 29544432678 scopus 로고    scopus 로고
    • note
    • 3/MeOH (7.0:3.0), collecting 10 ml fractions in each case, to obtain haloxysterol D (4) (17 mg) from fractions 20 to 30 and 24-ethylcholest-7-ene-3, 5,6-triol, (8) (19 mg) from fractions 60 to 70.
  • 8
    • 29544452420 scopus 로고    scopus 로고
    • note
    • 3) see Tables 1 and 2.
  • 9
    • 29544451258 scopus 로고    scopus 로고
    • note
    • 3) see Tables 1 and 2.
  • 10
    • 29544446068 scopus 로고    scopus 로고
    • note
    • 3) see Tables 1 and 2.
  • 11
    • 29544450873 scopus 로고    scopus 로고
    • note
    • 5) see Tables 1 and 2.
  • 32
    • 29544449930 scopus 로고    scopus 로고
    • note
    • Cholinesterase inhibition assay: The AChE and BChE inhibiting activities were measured by the spectrophotometric method developed by Ellman et al. 1962. Electric-eel AChE (EC 3.1.1.7), horse-serum BChE (E.C 3.1.1.8), acetylthiocholine iodide, butyrylthiocholine chloride, 5, 5′-dithiobis [2-nitrobenzoic acid] (DTNB), and galanthamine were purchased from Sigma (St. Louis, MO, USA). All other chemicals were of analytical grade. Standard operational assay protocol has been described previously. All the kinetic experiments were performed in 96-well microtiter plates by using SpectraMax 340 (Molecular Devices, CA, USA). The rate of the enzymatic reaction was measured by the following equation. Rate(mol/L/min ) = Change in absorbance/min/13,600.
  • 33
    • 29544436256 scopus 로고    scopus 로고
    • note
    • i is the intercept on x-axis.
  • 34
    • 29544451624 scopus 로고    scopus 로고
    • note
    • Statistical analysis. Graphs were plotted using GraFit program. Values of the correlation coefficients, slopes, intercepts, and their standard errors were obtained by the linear regression analysis using the same program. The correlation of all the lines of all graphs was found to be >0.99. Each point in the constructed graphs represents the mean of three experiments.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.