cyanide/breast neoplasms

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Flaxseed sprouts induce apoptosis and inhibit growth in MCF-7 and MDA-MB-231 human breast cancer cells.

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Flaxseeds have been shown to play a role in the prevention of cancer and heart disease, and it is believed that their more favorable fatty acid composition is responsible. Sprouting is a natural method to modify nutritional components and to decrease cyanide poisoning of raw flaxseeds. Here, we

Impedimetric aptasensing of the breast cancer biomarker HER2 using a glassy carbon electrode modified with gold nanoparticles in a composite consisting of electrochemically reduced graphene oxide and single-walled carbon nanotubes.

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A method is presented for electrochemical determination of the breast cancer biomarker HER2. A glassy carbon electrode (GCE) was modified with densely packed gold nanoparticles placed on a composite consisting of electrochemically reduced graphene oxide and single walled carbon nanotubes

Severe cyanide toxicity from 'vitamin supplements'.

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The use of alternative medicines is increasing and poorly regulated. We describe a case of severe cyanide poisoning arising from amygdalin, a putative vitamin supplement. A 32-year-old woman arrived in the emergency department by ambulance unresponsive, shocked and with fixed dilated pupils. She was

A new method to assess drug sensitivity on breast tumor acute slices preparation.

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A method for assessing tumor drug sensitivity is described that is based on preparation of tissue slices and use of silicon chips equipped with electrochemical sensors (multisensor array). The tumor slices (200-300 microM thick) are prepared after surgery and incubated in a medium for recovery after

Cytotoxic 2-phenyacrylnitriles, the importance of the cyanide moiety and discovery of potent broad spectrum cytotoxic agents.

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We previously reported the discovery of a simple conjugated cyano pharmacophore which had led to the development of (Z)-2-(3,4-dichlorophenyl)-3-(4-nitrophenyl)acrylonitrile, as a selective inhibitor of oestrogen receptor positive (ER+ve) human breast cancer cell line, MCF-7. Further exploration

Adriamycin effects on hydroperoxide metabolism and growth of human breast tumor cells.

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Human breast tumor cells MCF-7 were grown during 5 days in the presence of Adriamycin and the IC50 was 50 nM with the highest sublethal concentration 0.1 microM. At this latter concentration Adriamycin produced a complete inhibition of cell division and a partial reversion to a normal breast

Reawakening of dormant estrogen-dependent human breast cancer cells by bone marrow stroma secretory senescence.

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BACKGROUND Dormant estrogen receptor positive (ER+) breast cancer micrometastases in the bone marrow survive adjuvant chemotherapy and recur stochastically for more than 20 years. We hypothesized that inflammatory cytokines produced by stromal injury can re-awaken dormant breast cancer

Structure and applications of metal-organic framework based on cyanide and 3,5-dichloropyridine.

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The reaction of the aqueous/acetonitrile solutions of K3[Cu(CN)4] and 3,5-dichloropyridine (3,5-dClpy), in the presence of Me3SnCl affords a new metal-organic framework (MOF), (3)∞[(CuCN)2·(3,5-dClpy)2], 1. The structure of the MOF 1 was characterized by IR, UV-visible, TGA and X-ray single crystal

Synthesis and Cytotoxicity Studies of Novel NHC*-Gold(I) Complexes Derived from Lepidiline A.

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Ten novel N-heterocyclic carbene gold(I) complexes derived from lepidiline A (1,3-dibenzyl-4,5-dimethylimidazolium chloride) are reported here with full characterisation and biological testing. (1,3-Dibenzyl-4,5-diphenylimidazol-2-ylidene)gold(I) chloride (NHC*-AuCl) (1) was modified by substituting

Mammalian endogenous peroxidases as cellular markers and as biosynthetic endpoints of hormone-mediated activity: viewpoint from cytochemistry.

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Aldehyde-resistant, diaminobenzidine-stained endogenous peroxidases form ideal markers for the biochemical endpoints of hormone stimulation and differentiation of certain mammalian cells and tissues. The lactoperoxidase (LPO)-type of endogenous peroxidases are synthesized by the acinar cells of the

Diverse mechanisms of autophagy dysregulation and their therapeutic implications: does the shoe fit?

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In its third edition, the Vancouver Autophagy Symposium presented a platform for vibrant discussion on the differential roles of macroautophagy/autophagy in disease. This one-day symposium was held at the BC Cancer Research Centre in Vancouver, BC, bringing together experts in cell biology, protein

Rhenium mixed-ligand complexes with S,N,S-tridentate thiosemicarbazone/thiosemicarbazide ligands.

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Rhenium(V) complexes containing tridentate thiosemicarbazones/thiosemicarbazides (H2L1) derived from N-[N′,N′-dialkylamino(thiocarbonyl)]benzimidoyl chlorides with 4,4-dialkylthiosemicarbazides have been synthesized by ligand-exchange reactions starting from [ReOCl(L1)]. The chlorido ligand of

Automated synthesis of [11C]L-glutamine on Synthra HCN plus synthesis module.

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BACKGROUND

L-Glutamine (L-Gln) is the most abundant amino acid present in the human body and is involved in numerous metabolic pathways. Glutaminolysis is the metabolic process deployed by many aggressive cancers such as triple negative breast cancer (TNBC). Imaging the metabolic

Synthesis of Natural (-)-Antrocin and its Enantiomer via Stereoselective Aldol Reaction.

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The total synthesis of (-)-antrocin and its enantiomer are presented. Antrocin (-)-1 is an important natural product which acts as an antiproliferative agent in a metastatic breast cancer cell line (IC₅₀: 0.6 μM). The key features of this synthesis are: (a) selective

Identification of reactive intermediate formation and bioactivation pathways in Abemaciclib metabolism by LC-MS/MS: in vitro metabolic investigation.

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Abemaciclib (Verzenio^®) is approved as a tyrosine kinase inhibitor (TKI) for breast cancer treatment. In this study, in vitro phase I metabolic profiling of Abemaciclib (ABC) was done using rat liver microsomes (RLMs). We checked the formation of reactive intermediates in ABC

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