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Topic Review
Atropa Belladonna
Atropa belladonna, commonly known as belladonna or deadly nightshade, is a toxic perennial herbaceous plant in the nightshade family Solanaceae, which also includes tomatoes, potatoes, and eggplant (aubergine). It is native to Europe, North Africa, and Western Asia. Its distribution extends from Great Britain in the west to western Ukraine and the Iranian province of Gilan in the east. It is also naturalised or introduced in some parts of Canada and the United States. The foliage and berries are extremely toxic when ingested, containing tropane alkaloids. These toxins include atropine, scopolamine, and hyoscyamine, which cause delirium and hallucinations, and are also used as pharmaceutical anticholinergics. Tropane alkaloids are of common occurrence not only in the Old World tribes Hyoscyameae (to which the genus Atropa belongs) and Mandragoreae, but also in the New World tribe Datureae - all of which belong to the subfamily Solanoideae of the plant family Solanaceae. Atropa belladonna has unpredictable effects. The antidote for belladonna poisoning is physostigmine or pilocarpine, the same as for atropine.
  • 2.2K
  • 25 Nov 2022
Topic Review
Atropisomers by Oxidative Aromatization
Atropisomers are fascinating objects of study by themselves for chemists but also find applications in various sub-fields of applied chemistry. Among these strategies, oxidative aromatization with central-to-axial conversion of chirality has gained increasing popularity. It consists of the oxidation of a cyclic non-aromatic precursors into the corresponding aromatic atropisomers.
  • 425
  • 18 Apr 2023
Topic Review
ATT Triplex and DNA
Due to the involvement of DNA:RNA hybrids and triplex helices in many essential functions in cells, this entry’s main aim is to detect benzothiazole based moieties with selective binding or spectroscopic response to these nucleic structures compared to regular (non-hybrid) DNA and RNA duplexes and single-stranded forms.
  • 621
  • 29 Mar 2022
Topic Review
Au-Containing Cuprates
High pressure applications is strongly required for the synthesis of these materials because it is only way to stabilize gold oxides which are thermally very unstable at ambient pressures.
  • 446
  • 19 Apr 2021
Topic Review
Au(III) Cyclometallated Compounds with 2-Arylpyridines
A large numbers of reports (>100) described molecules (>500) and single crystal X-ray structures (>200) indicated that the Au(III) compounds with 2-arylpyridines* and their derivatives or analogues are interesting from the chemical, spectroscopic, and structural viewpoints. The most popular Au(III)-2PPY* species are those with 2-phenylpyridine* and 2-(4-methylphenyl)pyridine*, while among Au(III)-2ArPY* molecules-those containing 2-benzylpyridine* ring system.
  • 286
  • 15 Mar 2023
Topic Review
AuNP-liposome Nanocomposites: Architectures, Chemistry of Preparation, Analytical Characterization
These contents aim to provide a comprehensive understanding of the various architectures of AuNP-liposome nanocomposites and the factors influencing their formation. The objectives of these contents are to: 1. Define the term "architecture" concerning the spatial assembly of AuNP (gold nanoparticles) and liposomes, highlighting the various forms in which these assemblies can exist. 2. Explain how the architectures of AuNP-liposome nanocomposites depend on factors such as the size, shape, and surface chemistry of AuNP, as well as the characteristics of the hosting liposomes and the methods used to prepare the nanocomposites. 4. Discuss the different starting materials that can be used to create AuNP-liposome nanocomposites, including pre-prepared AuNP, gold ions that need to be reduced in situ, and ionic/molecular precursors of gold. 4. Describe the specific chemistry which can be employed to encapsulate hydrophilic and hydrophobic pre-prepared AuNP into liposomes, depending on the type of interactions (electrostatic or covalent) provided and the size of the AuNP.
  • 315
  • 26 Jul 2023
Topic Review
AuNP-Liposome Nanocomposites: Rationale of Preparation
AuNP are poor drug delivery candidates based on the lack of a reservoir or a matrix to load therapeutics. In fact, loading of therapeutics are limited to the surface of the AuNP, and thus the loading capacity is intrinsically less than other nanocarriers (lipidic or polymeric) on weight per weight bases. However, AuNP have excellent optical and thermal properties and has been proven as an excellent light absorber in the UV-vis region of the spectrum with excellent photothermal conversion efficiency to generate local heat that can be employed to fight nearby cancer cells or to induce drug delivery from the hosting matrix.
  • 296
  • 24 Jul 2023
Topic Review
AuNPs
Gold nanoparticles (AuNPs) have gained high prominence in the biomedicine field, due to their own physico-chemical properties that are suitable for different imaging or therapeutic uses, versatile structural modification, including easy functionalization of their surface with different chemical entities (e.g., chelators, targeting biomolecules or cytotoxic drugs), favourable biological half-life, low toxicity and biocompatibility. In particular, the use of AuNPs in radiopharmaceutical development has provided various nanometric platforms for the delivery of medically relevant radioisotopes for SPECT/PET diagnosis and/or radionuclide therapy
  • 3.1K
  • 20 Jan 2021
Topic Review
AuNPs and Fibrous Materials
The use of nanoparticles is a multidisciplinary approach to provide UV blocking, antimicrobial, water repellent, colorant, flame retardant, sensing, and self-cleaning properties to textiles. Particularly, the antimicrobial textiles with improved functionalities find several applications, namely, in health and hygiene products, infection control, and barrier material. Depositing nanoparticles in textiles have been a promising strategy to achieve multifunctional materials. Particularly, antimicrobial properties are highly valuable due to the emergence of new pathogens and the spread of existing ones. Various techniques have been used by researchers to functionalize natural and synthetic fibers with AuNPs such as sputtering, electrostatic assembly, chemical reduction in solution, dip-coating, electroless plating, drop and dry, biosynthesis, and print pasting method.
  • 626
  • 11 May 2021
Topic Review
Aurilide Family
Aurilides are a class of depsipeptides occurring mainly in marine cyanobacteria. Members of the aurilide family have shown to exhibit strong cytotoxicity against various cancer cell lines. These compounds bear a pentapeptide, a polyketide, and an α-hydroxy ester subunit in their structure.
  • 677
  • 18 Mar 2021
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