Assay for lipid peroxides in animal tissues by thiobarbituric acid reaction

From the Publisher: 
The accessible presentation of this book gives both a general view of the entire computer vision enterprise and also offers sufficient detail to be able to build useful applications. Users learn techniques that have proven to be useful by first-hand experience and a wide range of mathematical methods. A CD-ROM with every copy of the text contains source code for programming practice, color images, and illustrative movies. Comprehensive and up-to-date, this book includes essential topics that either reflect practical significance or are of theoretical importance. Topics are discussed in substantial and increasing depth. Application surveys describe numerous important application areas such as image based rendering and digital libraries. Many important algorithms broken down and illustrated in pseudo code. Appropriate for use by engineers as a comprehensive reference to the computer vision enterprise.

Computer vision : a modern approach = 计算机视觉 : 一种现代的方法

Artificial neural networks (ANNs) constitute a class of flexible nonlinear models designed to mimic biological neural systems. In this entry, we introduce ANN using familiar econometric terminology and provide an overview of ANN modeling approach and its implementation methods. † Correspondence: Chung-Ming Kuan, Institute of Economics, Academia Sinica, 128 Academia Road, Sec. 2, Taipei 115, Taiwan; ckuan@econ.sinica.edu.tw. †† I would like to express my sincere gratitude to the editor, Professor Steven Durlauf, for his patience and constructive comments on early drafts of this entry. I also thank Shih-Hsun Hsu and Yu-Lieh Huang for very helpful suggestions. The remaining errors are all mine.

Artificial neural networks

The herb Artemisia annua has been used for many centuries in Chinese traditional medicine as a treatment for fever and malaria. In 1971, Chinese chemists isolated from the leafy portions of the plant the substance responsible for its reputed medicinal action. This compound, called qinghaosu (QHS, artemisinin), is a sesquiterpene lactone that bears a peroxide grouping and, unlike most other antimalarials, lacks a nitrogen-containing heterocyclic ring system. The compound has been used successfully in several thousand malaria patients in China, including those with both chloroquine-sensitive and chloroquine-resistant strains of Plasmodium falciparum. Derivatives of QHS, such as dihydroqinghaosu, artemether, and the water-soluble sodium artesunate, appear to be more potent than QHS itself. Sodium artesunate acts rapidly in restoring to consciousness comatose patients with cerebral malaria. Thus QHS and its derivatives offer promise as a totally new class of antimalarials.

Quinghaosu (artemisin): an antimalarial drug from china

Numerous natural products originated from Chinese herbal medicine exhibit anti-cancer activities, including anti-proliferative, pro-apoptotic, anti-metastatic, anti-angiogenic effects, as well as regulate autophagy, reverse multidrug resistance, balance immunity, and enhance chemotherapy in vitro and in vivo. To provide new insights into the critical path ahead, we systemically reviewed the most recent advances (reported since 2011) on the key compounds with anti-cancer effects derived from Chinese herbal medicine (curcumin, epigallocatechin gallate, berberine, artemisinin, ginsenoside Rg3, ursolic acid, silibinin, emodin, triptolide, cucurbitacin B, tanshinone I, oridonin, shikonin, gambogic acid, artesunate, wogonin, β-elemene, and cepharanthine) in scientific databases (PubMed, Web of Science, Medline, Scopus, and Clinical Trials). With a broader perspective, we focused on their recently discovered and/or investigated pharmacological effects, novel mechanism of action, relevant clinical studies, and their innovative applications in combined therapy and immunomodulation. In addition, the present review has extended to describe other promising compounds including dihydroartemisinin, ginsenoside Rh2, compound K, cucurbitacins D, E, I, tanshinone IIA and cryptotanshinone in view of their potentials in cancer therapy. Up to now, the evidence about the immunomodulatory effects and clinical trials of natural anti-cancer compounds from Chinese herbal medicine is very limited, and further research is needed to monitor their immunoregulatory effects and explore their mechanisms of action as modulators of immune checkpoints.

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Naturally occurring anti-cancer compounds: shining from Chinese herbal medicine.

Development of Ayurveda - Tradition to trend.

Validation of medicinal herbs for anti-tyrosinase potential

Withania somnifera (L.) Dunal - Modern perspectives of an ancient Rasayana from Ayurveda.

Secondary metabolites from plants provide lead molecules for drug development. Metabolomics is a modern omic-technique for comprehensive analysis of phytochemicals. Advances in mass spectrometry (MS) based platforms like GC-MS and LC-MS, helped in separation and identification of several metabolites. Such analysis can be a valuable tool for identifying potential biomolecules from medicinal plants. Despite the potential use, metabolomics data of Indian medicinal plants and spices are extremely limited. Similarly, metabolomic studies on Ayurvedic formulations, e.g. Triphala/Trikatu, are lacking. Our review emphasizes the importance of metabolomics of Indian medicinal plants, crucial for quality evaluation and scientific validation of herbal products.

/pdf/metabolomics-of-medicinal-plants-a-versatile-tool-for-32ivcudo3a.pdf

Metabolomics of Medicinal Plants - A Versatile Tool for Standardization of Herbal Products and Quality Evaluation of Ayurvedic Formulations

The development of traditional medicine with the perspectives of safety, efficacy and quality would help not only to preserve the traditional heritage but also to rationalize the use of herbal medicine in the human healthcare. Nature is considered as a compendium for templates of new chemical entities. The medicinal plants mentioned in the different ancient texts worldwide may be explored with the modern scientific approaches for better leads in the healthcare. Drugs from medicinal plants are unique for their chemical and biological features, and are gaining global acceptance because they offer natural ways to treat diseases and promote healthcare. Natural products are the best sources of chemical diversity for finding new drugs and leads. Globalization of traditional medicine is necessary for health care with assessment of its safety, efficacy, therapeutic and clinical evidence. Evidence based validation of the ethnopharmacological claims on traditional medicine is necessary for its promotion and development. Applications of techniques such as marker analysis, DNA bar coding, plant metabolomics, network pharmacology etc. are being taken into account for the validation and documentation of medicinal plants. This can be achieved by the scientific exploitation of the established facts from ancient systems through proper validation of the claims based on pharmacological and phytochemical assessments.

Sayan Biswas

Papers

Development of Ayurveda - Tradition to trend.

Validation of medicinal herbs for anti-tyrosinase potential

Withania somnifera (L.) Dunal - Modern perspectives of an ancient Rasayana from Ayurveda.

Metabolomics of Medicinal Plants - A Versatile Tool for Standardization of Herbal Products and Quality Evaluation of Ayurvedic Formulations

Paradigm shift in natural product research: traditional medicine inspired approaches