Delayed gonadotoxic effects were revealed in outbred male sexually mature rats (SD) after exposure to paclitaxel in the prepubertal period, and the possibility of their correction with p-tyrosol was shown. It was found, that administration of paclitaxel does not inhibit the ability of animals to conceive, but impairs the reserve capacity of the testicular tissue. In intact female rats crossed with male rats receiving paclitaxel, increased post-implantation fetal death was observed. Combined administration of paclitaxel and p-tyrosol alleviated the delayed effects of the cytostatic treatment on the prepubertal testis.
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http://dx.doi.org/10.1007/s10517-022-05546-8 | DOI Listing |
Bull Exp Biol Med
July 2022
Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia.
Delayed gonadotoxic effects were revealed in outbred male sexually mature rats (SD) after exposure to paclitaxel in the prepubertal period, and the possibility of their correction with p-tyrosol was shown. It was found, that administration of paclitaxel does not inhibit the ability of animals to conceive, but impairs the reserve capacity of the testicular tissue. In intact female rats crossed with male rats receiving paclitaxel, increased post-implantation fetal death was observed.
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July 2019
Department of Agricultural and Food Sciences, Alma Mater Studiorum, University of Bologna (UNIBO), Piazza Goidanich, 60, I-47521 Cesena (FC), Bologna, Italy.
Τoward a harmonized and standardized procedure for the determination of total hydroxytyrosol and tyrosol content in virgin olive oil (VOO), the pros of a recently published in house validated ultra high performance liquid chromatography (UHPLC) protocol are discussed comparatively with those of other procedures that determine directly or indirectly the compounds hosted under the health claim on "olive oil polyphenols" (EC regulation 432/2012). Authentic VOOs were analyzed with five different liquid chromatographic separation protocols and H-NMR one in five different laboratories with expertise in VOO phenol analysis within three months. Data comparison indicated differences in absolute values.
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June 2019
Department of NEUROFARBA, University of Firenze, Via Ugo Schiff 6, 50019 Sesto F.no (Firenze), Italy and Multidisciplinary Centre of Research on Food Sciences (M.C.R.F.S.-Ce.R.A.).
The health claims of olive oil represent an important marketing lever in raising the willingness to pay for a product, but world producers of extra virgin olive oil (EVOO) do not take advantage of it because there are still obstacles to their use. Among these, one issue is the lack of an official method for determination of all free and linked forms derived from secoiridoidic structures of hydroxytyrosol and tyrosol. In this study, different acidic hydrolytic procedures for analyzing the linked forms were tested.
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September 2019
Department of Soil, Plant and Food Science, University of Bari Aldo Moro, Via Amendola 165/a, 70126 Bari, Italy.
Natural deep eutectic solvents (NADES) are a green, promising class of solvents. Phenolic compounds are among the targets of NADES' use in foods. A health claim is admitted by European Regulations for olive oils (OOs) containing at least 250 mg kg of selected polyphenols (hydroxytyrosol and its derivatives, included tyrosol, HTD), but their determination involves analytical issues that are being currently debated.
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March 2019
Department of Agricultural and Food Sciences, Alma Mater Studiorum-University of Bologna (UNIBO), Piazza Goidanich, 60, I-47521 Cesena (FC), Italy.
An ongoing challenge in olive oil analytics is the development of a reliable procedure that can draw the consensus of all interested parties regarding the quantification of concentrations above the required minimum value of 5 mg of bioactive "olive oil polyphenols" per 20 g of the oil, to fulfill the health claim introduced by the European Commission (EC) Regulation 432/2012. An in-house validated ultra-high performance liquid chromatography (UHPLC) protocol fit for this purpose is proposed. It relies on quantification of the total hydroxytyrsol (Htyr) and tyrosol (Tyr) content in the virgin olive oil (VOO) polar fraction (PF) before and after acidic hydrolysis of their bound forms.
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