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1.
Surawat Jariyawat Thanapol Thammapratip Kanoknetr Suksen Podchanart Wanitchakool Jintapat Nateewattana Arthit Chairoungdua Apichart Suksamrarn Pawinee Piyachaturawat 《Cell biology and toxicology》2011,27(6):413-423
Diarylheptanoids, isolated from the rhizome of Curcuma comosa Roxb., have several biological activities including anti-oxidant and anti-inflammation. The present study investigated the
effect of five diarylheptanoids isolated from C. comosa rhizome on the proliferation of murine P388 leukemic cells. Compound-092, (3S)-1-(3,4-dihydroxyphenyl)-7-phenyl-(6E)-6-hepten-3-ol, bearing a catechol moiety, was the most potent diarylheptanoid (IC50 of 4 μM) in inhibiting P388 leukemic cell viability by causing DNA breakage and inducing apoptosis. Apoptotic cell death
was characterized by the presence of chromatin condensation, formation of apoptotic bodies, DNA fragmentation, and externalization
of plasma membrane phosphatidylserine. This compound increased caspase-3 activity about fivefold above the untreated control,
decreased the intracellular reduced glutathione level, and impaired mitochondrial transmembrane potential. In the presence
of Cu(II) ion, the compound exhibited a pro-oxidant activity causing DNA strand breakage and enhancing the anti-proliferative
activity. The results provide evidence for the pro-oxidant activity of the diarylheptanoid bearing a catechol moiety in the
induction of apoptosis in murine P388 leukemia. 相似文献
2.
Sarawalee Arunkhamkaew Anan Athipornchai Nuttapon Apiratikul Apichart Suksamrarn Vachiraporn Ajavakom 《Bioorganic & medicinal chemistry letters》2013,23(10):2880-2882
The synthesis of racemic tetrahydrocurcumin- (THC-), tetrahydrodemethoxycurcumin- (THDC-) and tetrahydrobisdemethoxycurcumin- (THBDC-) dihydropyrimidinone (DHPM) analogues was achieved by utilizing the multi-component Biginelli reaction in the presence of copper sulphate as a catalyst. The evaluation of acetylcholinesterase inhibitors for Alzheimer’s disease of these compounds showed that they exhibited higher inhibitory activity than their parent analogues. THBDC–DHPM demonstrated the most potent inhibitory activity with an IC50 value of 1.34 ± 0.03 μM which was more active than the approved drug galanthamine (IC50 = 1.45 ± 0.04 μM). 相似文献
3.
4.
X. L. Tan A. Vanavichit S. Amornsilpa S. Trangoonrung 《TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik》1998,97(5-6):994-999
The inheritance of fertility restoration of rice cytoplasmic male sterility of the wild abortive type was studied by means
of QTL mapping. The two segregating populations examined showed high frequencies of highly sterile and highly fertile progenies,
but a low frequency of partially sterile and partially fertile progenies. The distributions suggested that fertility restoration
was mainly controlled by major genes. Based on a linkage map constructed with 57 RFLP and 61 AFLP markers on a B1F1 population, composite interval mapping (CIM) revealed that the fertility was restored by the additive effects of two restorer
loci located on chromosome 10. One QTL, tightly linked to RFLP marker C1361 in the middle of the long arm of chromosome 10,
explained 71.5% of the phenotypic variance. The second QTL was located between RFLP markers R2309 and RG257 on the short arm
and explained 27.3% of the phenotypic variance. Similar results were obtained using the simple interval mapping (SIM) methods.
Recived: 8 January 1998/Accepted: 22 April 1998 相似文献
5.
Ratchanaporn Chokchaisiri Phongsak Innok Apichart Suksamrarn 《Phytochemistry letters》2012,5(2):361-366
Four new flavonoid glycosides, curcucomosides A–D (1–4), three known flavonoid glycosides, 5–7, and four known diarylheptanoids, 8–11, were isolated from the ethanol extract of the aerial parts of Curcuma comosa. The structures of the new compounds were established as rhamnazin 3-O-α-l-arabinopyranoside (1), rhamnocitrin 3-O-α-l-arabinopyranoside (2), rhamnazin 3-O-α-l-rhamnopyranosyl-(1→2)-O-α-l-arabinopyranoside (3), and rhamnocitrin 3-O-α-l-rhamnopyranosyl-(1→2)-O-α-l-arabinopyranoside (4) by spectroscopic analysis and chemical reactions whereas those of the known compounds were identified by spectral comparison with those of the reported values. 相似文献
6.
Apichart Intarapanich Philip J Shaw Anunchai Assawamakin Pongsakorn Wangkumhang Chumpol Ngamphiw Kridsadakorn Chaichoompu Jittima Piriyapongsa Sissades Tongsima 《BMC bioinformatics》2009,10(1):382
Background
Non-random patterns of genetic variation exist among individuals in a population owing to a variety of evolutionary factors. Therefore, populations are structured into genetically distinct subpopulations. As genotypic datasets become ever larger, it is increasingly difficult to correctly estimate the number of subpopulations and assign individuals to them. The computationally efficient non-parametric, chiefly Principal Components Analysis (PCA)-based methods are thus becoming increasingly relied upon for population structure analysis. Current PCA-based methods can accurately detect structure; however, the accuracy in resolving subpopulations and assigning individuals to them is wanting. When subpopulations are closely related to one another, they overlap in PCA space and appear as a conglomerate. This problem is exacerbated when some subpopulations in the dataset are genetically far removed from others. We propose a novel PCA-based framework which addresses this shortcoming. 相似文献7.
Jutamas Apisornopas Patamawadee Silalai Teerapich Kasemsuk Anan Athipornchai Uthaiwan Sirion Kanoknetr Suksen Pawinee Piyachaturawat Apichart Suksamrarn Rungnapha Saeeng 《Bioorganic & medicinal chemistry letters》2018,28(9):1558-1561
New iridoid glycoside derivatives from durantoside I, the latter from the dried flowers and leaves of Citharexylum spinosum, were synthesized by variously modifying a sugar moiety by silylation or acetylation and/or removal of cinnamate group at C-7 position and subsequent screening for comparative cytotoxicity against several cancer cell lines. Addition of alkylsilane to durantoside I and removal of cinnamate group were most effective in improving cytotoxicity. 相似文献
8.
Lanceras Jonaliza C.; Huang Zue-Liu; Naivikul Onanong; Vanavichit Apichart; Ruanjaichon Vinitchan; Tragoonrung Somvong 《DNA research》2000,7(2):93-101
Thai jasmine rice, KDML 105, is known as the best quality rice.It is known not only for its aroma but also for its good cookingand eating qualities. Amylose content (AC), gel consistency(GC) and gelatinization temperature (GT) are important traitsdetermining rice quality. A population of recombinant inbredlines (RIL) derived from KDML105 x CT9993 cross was used tostudy the genetic control of AC, GC and GT traits. A total of191 markers were used in the linkage map construction. The 1605.3cM linkage map covering nearly the whole rice genome was usedfor QTL (define QTL) analysis. Four QTLs for AC were detectedon chromosomes 3, 4, 6 and 7. These QTLs accounted for 80% ofphenotypic variation explained (PVE) in AC. The presence ofone major gene as well as several modifiers was responsiblefor the expression of the trait. Two QTLs on chromosome 6 andone on chromosome 7 were detected for GC, which accounts for57% of PVE. A single gene of major effect along with modifiergenes controls GC from this cross. The QTLs in the vicinityof waxy locus were major contributors in the expression of ACand GC. The finding that the position of QTLs for AC and GCwere near each other may reflect tight linkage or pleiotropy.Three QTLs were detected, one on chromosome 2 and two on chromosome6, which accounted for 67% of PVE in GT. Just like AC and GC,one major gene and modifier genes governed the variation inGT resulting from the KDML105 x CT9993 cross. Breeding for cookingand eating qualities will largely rely on the preferences ofthe end users. 相似文献
9.
Sudarat Sombut Rada Bunthawong Uthaiwan Sirion Teerapich Kasemsuk Pawinee Piyachaturawat Kanoknetr Suksen Apichart Suksamrarn Rungnapha Saeeng 《Bioorganic & medicinal chemistry letters》2017,27(23):5139-5143
A series of 14-deoxy-11,12-didehydroandrographolide analogues were synthesized from naturally occurring andrographolide and their cytotoxicity evaluated against nine cancer cell lines including cholangiocarcinoma. Analogues 5a and 5b exhibited the most potent cytotoxicity with ED50s of 3.37 and 3.08?μM on KKU-M213 cell lines and 2.93 and 3.27?μM on KKU-100 cell lines, respectively. Selective cytotoxicity on cholangiocarcinoma cell lines identified in this study highlight the importance of structural modification in the development of drugs for this cancer. 相似文献