MedWorm: Nanotechnology Top 20

Against Lung Cancer Cells: To Be, or Not to Be, That Is the Problem

Research Letters in Nanotechnology — Wed, 01 Feb 2012 11:48:01 +0100

Tobacco smoke and radioactive radon gas impose a high risk for lung cancer. The radon-derived ionizing radiation and some components of cigarette smoke induce oxidative stress by generating reactive oxygen species (ROS). Respiratory lung cells are subject to the ROS that causes DNA breaks, which subsequently bring about DNA mutagenesis and are intimately linked with carcinogenesis. The damaged cells by oxidative stress are often destroyed through the active apoptotic pathway. However, the ROS also perform critical signaling functions in stress responses, cell survival, and cell proliferation. Some molecules enhance radiation-induced tumor cell killing via the reduction in DNA repair levels. Hence the DNA repair levels may be a novel therapeutic modality in overcoming drug resistance in lun...

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Effectiveness of the Novel Herbal Medicine, KIOM-MA, and Its Bioconversion Product, KIOM-MA128, on the Treatment of Atopic Dermatitis

Research Letters in Nanotechnology — Wed, 01 Feb 2012 11:48:01 +0100

This study was conducted to determine if oral administration of the novel herbal medicine, KIOM-MA, and its Lactobacillus acidophilus-fermented product, KIOM-MA128, has therapeutic properties for the treatment of atopic dermatitis (AD). Using AD-induced BALB/c mice by Ovalbumin and aluminum hydroxide, the effectiveness of KIOM-MA and KIOM-MA128 on AD was evaluated. Oral administration of KIOM-MA and KIOM-MA128 reduced major clinical signs of AD including erythema/darkening, edema/papulation, excoriations, lichenification/prurigo, and dryness. Interestingly, KIOM-MA128 more significantly improved AD-related symptoms including decrease of IgE level in the plasma as well as reduction of scratching behavior, skin severity in the AD BALB/c model. HPLC analysis showed the significant changes in ...

Formulating dual-function nanoparticles for photodynamic and photothermal cancer therapy

Nanotechweb.org journal highlights — Thu, 12 Jan 2012 14:35:13 +0100

Carbon nanotube–chitosan–phycocyanin complex displays photoinduced cytoxicity (Source: Nanotechweb.org journal highlights)

Potential Antioxidant Role of Tridham in Managing Oxidative Stress against Aflatoxin-B1-Induced Experimental Hepatocellular Carcinoma

Research Letters in Nanotechnology — Wed, 01 Feb 2012 11:48:01 +0100

This study highlights the potent antioxidant properties of TD which contribute to its therapeutic effect in AFB1-induced HCC in rats. (Source: Research Letters in Nanotechnology)

Transport/Magnetotransport of High-Performance Graphene Transistors on Organic Molecule-Functionalized Substrates

Nano Letters — Fri, 20 Jan 2012 15:16:54 +0100

Nano LettersDOI: 10.1021/nl204036d (Source: Nano Letters)

A Stable “Flat″ Form of Two-Dimensional Crystals: Could Graphene, Silicene, Germanene Be Minigap Semiconductors?

Nano Letters — Thu, 19 Jan 2012 13:50:33 +0100

Nano LettersDOI: 10.1021/nl204283q (Source: Nano Letters)

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Graphene–Multilayer Graphene Nanocomposites as Highly Efficient Thermal Interface Materials

Nano Letters — Tue, 17 Jan 2012 20:09:09 +0100

Nano LettersDOI: 10.1021/nl203906r (Source: Nano Letters)

Electron Pumping in Graphene Mechanical Resonators

Nano Letters — Mon, 30 Jan 2012 15:33:26 +0100

Nano LettersDOI: 10.1021/nl2038985 (Source: Nano Letters)

Broadband Terahertz Polarizers with Ideal Performance Based on Aligned Carbon Nanotube Stacks

Nano Letters — Mon, 30 Jan 2012 15:20:53 +0100

Nano LettersDOI: 10.1021/nl203783q (Source: Nano Letters)

Flexible Gigahertz Transistors Derived from Solution-Based Single-Layer Graphene

Nano Letters — Thu, 02 Feb 2012 21:23:17 +0100

Nano LettersDOI: 10.1021/nl203316r (Source: Nano Letters)

Large-Scale Graphene Micropatterns via Self-Assembly-Mediated Process for Flexible Device Application

Nano Letters — Mon, 30 Jan 2012 19:28:24 +0100

Nano LettersDOI: 10.1021/nl203691d (Source: Nano Letters)

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Sub-10 nm Carbon Nanotube Transistor

Nano Letters — Wed, 18 Jan 2012 20:24:27 +0100

Nano LettersDOI: 10.1021/nl203701g (Source: Nano Letters)

Gate-Controlled Nonlinear Conductivity of Dirac Fermion in Graphene Field-Effect Transistors Measured by Terahertz Time-Domain Spectroscopy

Nano Letters — Mon, 09 Jan 2012 18:06:50 +0100

Nano LettersDOI: 10.1021/nl202442b (Source: Nano Letters)

Engineering Empty Space between Si Nanoparticles for Lithium-Ion Battery Anodes

Nano Letters — Tue, 10 Jan 2012 05:31:35 +0100

Nano LettersDOI: 10.1021/nl203967r (Source: Nano Letters)

Controlled Lateral Manipulation of Molecules on Insulating Films by STM

Nano Letters — Mon, 23 Jan 2012 14:04:49 +0100

Nano LettersDOI: 10.1021/nl204322r (Source: Nano Letters)

Correction to Translocation of Single-Wall Carbon Nanotubes Through Solid-State Nanopores

Nano Letters — Thu, 19 Jan 2012 19:27:05 +0100

Nano LettersDOI: 10.1021/nl300143f (Source: Nano Letters)

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Large-Scale Synthesis of High-Quality Hexagonal Boron Nitride Nanosheets for Large-Area Graphene Electronics

Nano Letters — Fri, 13 Jan 2012 21:08:28 +0100

Nano LettersDOI: 10.1021/nl203635v (Source: Nano Letters)

Hip Fracture Mortality: Is It Affected by Anesthesia Techniques?

Research Letters in Nanotechnology — Thu, 12 Jan 2012 14:38:32 +0100

We hypothesized that combined peripheral nerve block (CPNB) technique might reduce mortality in hip fracture patients with the advantage of preserved cardiovascular stability. We retrospectively analyzed 257 hip fracture patients for mortality rates and affecting factors according to general anesthesia (GA), neuraxial block (NB), and CPNB techniques. Patients’ gender, age at admission, trauma date, ASA status, delay in surgery, followup period, and Barthel Activities of Daily Living Index were determined. There were no differences between three anesthesia groups regarding to sex, followup, delay in surgery, and Barthel score. NB patients was significantly younger and CPNB patients’ ASA status were significantly worse than other groups. Mortality was lower for regional group (NB + CPNB)...

Natural nanotubes direct deposition of near-atomic scale alloys

Nanotechweb.org journal highlights — Thu, 19 Jan 2012 15:39:58 +0100

3 nm wide CoFe(Ni) nanowires grown inside tobacco mosaic virus templates (Source: Nanotechweb.org journal highlights)

Observation of Degenerate One-Dimensional Sub-Bands in Cylindrical InAs Nanowires

Nano Letters — Wed, 01 Feb 2012 15:25:09 +0100

Nano LettersDOI: 10.1021/nl203895x (Source: Nano Letters)