Category Biology/Biotechnology

Nanoparticles in the shape of cubes, octahedrons, and spheres coordinate with each other to build structures. The shapes are bound together by complementary DNA molecules on each type of particle. The structures of the resulting 3D crystals are determined by the spatial symmetry of the facets of the cubes and octahedrons, while their structural order depends on DNA-tuned interactions and the ratio of the nanoparticles’ sizes.

APPS: Directional binding for self-assembling materials made of different types of nanoparticles opens up opportunities to design unique materials that could benefit high-density energy storage devices and catalysis, among other applications.

The organization of spherical particles into lattices is typically driven by packing considerations...

KFU’s researchers in cooperation with the Kazan Research Institute of Epidemiology and Microbiology and the Bioengineering Center of the Russian Academy of Sciences proved the effectiveness of biopolymers against pathogenic microorganisms. Подробности: http://kpfu.ru/eng/news-eng/new-antibacterial-drug-to-be-created-at-kfu-143092.html Любое использование материалов допускается только при наличии гиперссылки на портал КФУ (kpfu.ru)

The study specifically concentrated on chitosan extracted from chitin in the carapaces of insects and crustaceans. “We found that some forms of chitosan are toxic...

Metastatic melanoma: positron emission tomographic (PET)/computed tomography (CT) images. A-C, PET/CT of the head and neck after recurrence of malignant melanoma reveals increased FDG uptake spanning from the nose, left malar cheek, to the left ear, which represents a large melanoma (8.5 cm) and multiple additional in-transit metastases. E-G, Three months after restarting intralesional interleukin 2, imiquimod, and a topical retinoid, there is resolution of the enhancing lesions. D, At initial presentation, PET/CT image (patient 8) shows increased FDG uptake in the skin and subcutaneous tissues of the back of right forearm, consistent with biopsy-proven melanoma (18- × 6-cm plaque). H, At 5 months posttreatment, no hypermetabolic lesion is identified. Creit: 10.1016/j.jaad.2015.06.060

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A natural compound, limonene, found in oranges and lemons, could be indicative in early-stage diagnosis of liver disease. Patients with this illness do not often present with symptoms until the disease is advanced. Even then diagnosis is difficult and the symptoms and signs are often general and can be mistaken for other pathologies. For advanced cirrhosis liver,transplant is the only treatment.

In the UK liver disease has risen sharply over the past few decades and is the 3rd biggest cause of premature mortality, with 3/4 of liver deaths due to alcohol. Patients do not often present with symptoms until the disease is advanced.

The R enantiomer of limonene smells like oranges. The S enantiomer smells like lemons. Credit: https://jahschem.wikispaces.com/stereochem+in+biology

The Molec...