نتایج جستجو برای: n11

تعداد نتایج: 192  

ژورنال: :تولید محصولات زراعی و باغی 0
علی محمدی a. mohammadi department of horticulture, free university of tehran, science and research branch, iran.دانشگاه آزاد واحد علوم تحقیقات، تهران کورش وحدتی k. vahdati department of horticultural sciences, college of abouraihan compus, university of tehran, iran.پردیس ابوریحان، دانشگاه تهران وحید عبدوسی v. abdousi department of horticulture, free university of tehran, science and research branch, iran.دانشگاه آزاد واحد علوم تحقیقات، تهران فاضل نجف آبادی f. najafabadi department of agronomy and plant breeding, aburaihan canpus, university of tehran, iran.پردیس ابوریحان، دانشگاه تهران. تهران محمد جواد محمودی m. j. mahmoudi department of horticultural sciences, college of abouraihan compus, university of tehran, iran.پردیس ابوریحان، دانشگاه تهران

شناسایی و گزینش ژنوتیپ های برتر اولین گام در برنامه اصلاحی درخت گردو است. به منظور شناسایی ژنوتیپ های برتر استان لرستان طی سال های 1387 تا 1388 بیش از 35 هزار ژنوتیپ بذری مورد ارزیابی قرار گرفت. 288 درخت گردو از توده شناسایی شده انتخاب و 29 صفت ظاهری براساس توصیف نامه ipgri مورد ارزیابی قرار گرفت. در نهایت 54 ژنوتیپ امیدبخش با ارزیابی 10 صفت مهم ظاهری در پنج گروه مختلف دسته بندی شدند. براساس نت...

Journal: :Cancer research 1991
C W Porter B Ganis P R Libby R J Bergeron

The polyamine analogue, N1,N12-bis(ethyl(-spermine (BESPM), is known to suppress ornithine and S-adenosylmethionine decarboxylase levels, deplete intracellular polyamine pools, and inhibit cell growth. Among human melanoma cell lines, MALME-3 cells were found to be typically sensitive to the antiproliferative activity of the BESPM, whereas LOX cells were atypically insensitive to the analogue. ...

Journal: :Molecular pharmacology 1997
M Fogel-Petrovic D L Kramer S Vujcic J Miller J S McManis R J Bergeron C W Porter

The spermine analog N1,N11-diethylnorspermine (DE-333, also known as DENSPM or BENSPM) is regarded as the most potent known inducer of the polyamine catabolic enzyme, spermidine/spermine N1-acetyltransferase (SSAT), increasing activity by more than 200- to 1000-fold in certain cell types. The relative ability of a series of eight systematically modified DE-333 analogs to affect SSAT expression ...

Journal: :Cancer research 1992
R J Bernacki R J Bergeron C W Porter

The spermine analogues, N1,N12-bis(ethyl)spermine (BESPM), N1,N11-bis(ethyl)norspermine (BENSPM), and N1,N14-bis(ethyl)-homospermine (BEHSPM) behave similarly in down-regulating the key polyamine biosynthetic enzymes, ornithine and S-adenosylmethionine decarboxylase, but differ distinctly in their abilities to induce the polyamine catabolic enzyme, spermidine/spermine-N1-acetyltransferase; BENS...

Journal: :Molecular pharmacology 1999
L Alhonen M Pietilä M Halmekytö D L Kramer J Jänne C W Porter

We have recently generated transgenic mice in which polyamine catabolism has been activated by overexpressing the rate-limiting enzyme of polyamine catabolism, spermidine/spermine N1-acetyltransferase (SSAT). These animals have now been tested for their sensitivity to the polyamine analog N1,N11-diethylnorspermine (DENSPM), which is currently undergoing Phase I clinical trial. The analog is kno...

Journal: :Dalton transactions 2011
Fabio G Doro Iuri M Pepe Sergio E Galembeck Rose M Carlos Zenis N da Rocha Mauro Bertotti Elia Tfouni

Chemical reactivity, photolability, and computational studies of the ruthenium nitrosyl complex with a substituted cyclam, fac-[Ru(NO)Cl(2)(κ(3)N(4),N(8),N(11)(1-carboxypropyl)cyclam)]Cl·H(2)O ((1-carboxypropyl)cyclam = 3-(1,4,8,11-tetraazacyclotetradecan-1-yl)propionic acid)), (I) are described. Chloride ligands do not undergo aquation reactions (at 25 °C, pH 3). The rate of nitric oxide (NO) ...

Journal: :Microscopy research and technique 2003
William James Curry Simon Brockbank Anna Patricia McCollum Cliona Boyle David Gibson

WE-14 is generated in subpopulations of chromogranin A immunopositive endocrine cells and neurons including those innervating the anterior uvea. This study investigated WE-14 in intact sclero-limbo-corneal tissue from embryonic (E17), neonatal (N0-N16), and adult mice using immunocytochemistry and confocal scanning laser microscopy. Weak WE-14 immunostaining was observed at birth in nerve fibre...

Journal: :Cancer research 1989
P R Libby M Henderson R J Bergeron C W Porter

As an antiproliferative strategy, we are using bis(ethyl) derivatives of spermine to suppress polyamine biosynthetic enzyme activity and, thereby, deplete intracellular polyamine pools. Since certain of these analogues have recently been shown to potently increase spermidine/spermine-N1-acetyltransferase activity, we have investigated the relationship of this effect to growth inhibition and pol...

Journal: :Molecular cancer therapeutics 2004
Suzanne Hector Carl W Porter Debora L Kramer Kimberly Clark Joshua Prey Nicholas Kisiel Paula Diegelman Ying Chen Lakshmi Pendyala

A great deal of experimental evidence connects induction of polyamine catabolism via spermidine/spermine N1-acetyltransferase (SSAT) to antiproliferative activity and apoptosis. Following our initial observation from gene expression profiling that platinum drugs induce SSAT, we undertook this present study to characterize platinum drug induction of SSAT and other polyamine catabolic enzymes and...

Journal: :Journal of manipulative and physiological therapeutics 2010
Heidi Haavik Taylor Bernadette Murphy

OBJECTIVE The aim of the current study was to investigate changes in the intrinsic inhibitory interactions within the somatosensory system subsequent to a session of spinal manipulation of dysfunctional cervical joints. METHOD Dual peripheral nerve stimulation somatosensory evoked potential (SEP) ratio technique was used in 13 subjects with a history of reoccurring neck stiffness and/or neck ...

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