Protection potential

Phytoestrogens have been suggested as potentially protective against a number of other disease conditions which can affect both men and women. 

Thus, it is uncertain to what extent the apparent protective effects of fruit and vegetable consumption on risk of stomach cancer can be attributable to their phytoestrogen content. This appears not to have been studied directly, and other constituents such as ascorbic acid (vitamin C), a-tocopherol (vitamin E) and /1-carotene may be potentially protective. 

Cable type Construction and material Rest potential Protection potentials Aerobic Anaerobic ... 

Anode Operating Potential, Protection Potential and Driving Voltage... 

See also Corrosion Potential, Electrode Potential, Equilibrium Potential, Flade Potential, Open-circuit Potential, Passivation Potential, Protection Potential, Redox Potential.)... 

Potential Protective Role of Carotenoids in the Retina as Antioxidants.312... 

POTENTIAL PROTECTIVE ROLE OF CAROTENOIDS IN THE RETINA AS ANTIOXIDANTS... 

Raghavan, N., Freedman, D.O., Fitzgerald, P.C., Unnasch, T.R., Ottesen, E.A. and Nutman, T.B. (1994) Cloning and characterization of a potentially protective chitinase-like recombinant antigen from Wuchereria bancrofti. Infection and Immunity 62, 1901-1908. 

Fruits and vegetables have historically been considered rich sources of some essential dietary micronutrients and fibers, and more recently they have been recognized as important sources for a wide array of phytochemicals that individually, or in combination, may benefit health (Stavric 1994 Rechkemmer 2001). Therefore, some people have conferred on fruits and vegetables the status of functional foods. There are many biologically plausible reasons for this potentially protective association, including the fact that many of the phytochemicals act as antioxidants. 

Naturally occurring compounds such as phytochemicals, which possess anticar-cinogenic and other beneficial properties, are referred to as chemopreventers. One of the predominant mechanisms of their protective action is due to their antioxidant activity and the capacity to scavenge free radicals. Among the most investigated chemopreventers are some vitamins, plant polyphenols, and pigments such as carotenoids, chlorophylls, flavonoids, and betalains. Resolution of the potential protective roles of... 

With these features in mind, we envisioned a new family of macrocyclic ligands for olefin polymerization catalysis (Fig. 9) [131, 132], We utilized macrocycles as the ligand framework and installed the catalytic metal center in the core of the macrocycles. Appropriate intra-annular binding sites are introduced into cyclophane framework that not only match the coordination geometry of a chosen metal but also provide the appropriate electronic donation to metal center. The cyclophane framework would provide a microenvironment to shield the catalytic center from all angles, but leaving two cis coordination sites open in the front one for monomer coordination and the other for the growing polymer chain. This could potentially protect the catalytic center and prevent it from decomposition or vulnerable side reactions. 

SchonbeckE, SchlosserE (1976) Preformed substances as potential protectants. In Heitefuss, R, WiUiams, PH (eds) Physiological plant pathology. Springer, Berlin, pp. 653-678 Pegg GE, Woodward S (1986) Synthesis and metabohsm of a-tomatine in tomato isoUnes in relation to resistance to Verticillium albo-atrum. Mol Plant Microbe Interact 28 187 Eord JE et al (1977) The detoxification of a-tomatine by Fusarium oxysporum f.sp. lycopersici. Phytochemistry 16 544... 

Ihe end products of the hydrogenatiai of fish oils used in margarines have been examined for their relation to the develc ent of heart disease, a concern which is in direct contrast to fish oil s potentially protective effects. 

The important question of whether isoflavonoids should be used to protect human health clearly requires much more information to be provided by appropriate studies. Factors such as age and biological responsiveness to the different potential protective or even harmful effects of isoflavonoids (these will change with age) appear to play an important role. 

Many antioxidants quoted as potential protective agents against free-radical-induced DNA damage have more than one phenolic group. Their chemistry is, therefore, also of some interest in the present context. The semiquinone radicals, derived from hydroquinone by one-electron oxidation or from 1,4-benzoqui-none by one-electron reduction, are in equilibrium with their parents (Roginsky et al. 1999), and these equilibria play a role in the autoxidation of hydroquinone (Eyer 1991 Roginsky and Barsukova 2000). Superoxide radials are intermediates in these reactions. 

TAC of urine and seminal plasma is comparable to, or even higher than, that of blood plasma (Table 10). TAC of seminal plasma was significantly lower in va-sectomized men compared with that of normozoospermic donors. This indicates that the epididymis contributes to the antioxidant capacity of seminal plasma and possesses region-specific antioxidant activity, which may potentially protect spermatozoa from oxidative attack during storage at this site (P21). TAC of seminal plasma of several avian species was reported to show large interspecies differences (from 0.62 mM for chicken up to 13.15 mM for turkey). TAC showed a significant correlation with the protein concentration of seminal plasma (S30). 

Karentz, D., McEuen, F. S., Land, M. C., and Dunlap, W. C., Survey of microsporine-like amino acid compounds in Antarctic marine organisms potential protection from ultraviolet exposure, Mar. Biol. 

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