Group items tagged

Gold nanoparticles have attracted great interests in the fields of biological and medical applications in past few years. Comparing with quantum dots and other materials, gold nanoparticles have been investigated and utilized in several biotechnology applications, such as sensory probes, drug delivery, and therapy techniques. In addition, gold nanoparticles can be excited by light at Near-IR absorbing, which makes them to be the next generation contrast agents for diagnostic and phototherapeutic applications, such as two-photon luminescence imaging, light-scattering imaging, surface-enhanced Raman scattering, and photothermal therapy.

Mechanisms of berberine (natural yellow 18)-induced mitochondrial dysfunction: interaction with the adenine nucleotide translocator. Pereira CV, Machado NG, Oliveira PJ. Toxicol Sci. 2008 Oct;105(2):408-17. Epub 2008 Jul 3. PMID: 18599498 doi: 10.1124/jpet.107.128017 The data from the present work appear to show that berberine also presents some degree of toxicity to "nontumor" systems, which should be carefully understood. ANT inhibition in nontumor cells by berberine would be responsible for a decrease in energy production and could also result in MPT induction. To the best of our knowledge, no full toxicity assessment exists for berberine in humans, although its use in several commercially available supplements suggests that the compound may present a relatively wide safety interval. In fact, a study with patients with congestive heart failure treated with 1.2 g/day of oral berberine revealed low toxicity and resulted into an average plasma concentration of 0.11 mg/l which would translate into 0.3µM (Zeng and Zeng, 1999Go). Repeated cumulative treatments, alternative forms of formulation (e.g., topical application vs. injection) or more importantly, active mitochondrial accumulation due to its positive charge would be expected to increase its concentration in cells into the range of concentrations used in this study. Empirical data from nontraditional medicines plus the use of extensive clinical assays would allow the use of berberine as a promising antimelanoma agent while maintaining its safety for humans. In radial/vertical forms of melanoma, a possible topical application of berberine would also be possible, thus minimizing side effects on other organs. In conclusion, the present work identifies the ANT as an important target for berberine, with clear relevance for its proposed antitumor effects.

Safety evaluation of topical applications of ethanol on the skin and inside the oral cavity. Lachenmeier DW. J Occup Med Toxicol. 2008 Nov 13;3:26. PMID: 19014531 doi:10.1186/1745-6673-3-26

The application of probiotics in cancer. de Moreno de LeBlanc A, Matar C, Perdigón G. Br J Nutr. 2007 Oct;98 Suppl 1:S105-10. Review. PMID: 17922945 doi:10.1017/S0007114507839602

Berberine and Coptidis rhizoma as novel antineoplastic agents: a review of traditional use and biomedical investigations. Tang J, Feng Y, Tsao S, Wang N, Curtain R, Wang Y. J Ethnopharmacol. 2009 Oct 29;126(1):5-17. Epub 2009 Aug 15. PMID: 19686830 doi:10.1016/j.jep.2009.08.009 Conclusions The modern evidences of treating cancer with Huanglian and berberine have a strong linkage with traditional concept and rules of using Huanglian in CM practice. As anticancer candidates with low toxicity, berberine and its altered structure, as well as Huanglian and its formulae, will attract scientists to pursue the potential anticancer effects and the mechanisms by using technologies of genomics, proteomics and other advanced approaches. On the other hand, relatively few in vivo studies have been conducted on anticancer effects of Huanglian and berberine. The clinical application of berberine or Huanglian as novel cancer therapeutic agents requires in vivo validations and further investigations of their anticancer mechanisms.

"The clinical potential for a liver-protective supplement in cancer care is significant, as I've observed in many years of integrative medical practice," writes Dr. Keith Block, ICT editor. "Several chemotherapy drugs, as well as many of the other drugs cancer patients take, have extremely problematic liver toxicities. With this exclusive edition, the scientific community will have a resource to guide and inspire further research on this very interesting herbal medicine."