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Rosa damascena Decreased Mortality in Adult Drosophila
Mahtab Jafari,Asghar Zarban,Steven Pham,Thomas Wang 한국식품영양과학회 2008 Journal of medicinal food Vol.11 No.1
The effects of a rose-flower extract, Rosa damascena, on the mortality rate of Drosophila melanogaster wasevaluated in this study. R. damascenais a potent antioxidant that has many therapeutic uses in addition to its perfuming ef-fects. Supplementing Drosophilawith this rose extract resulted in a statistically significant decrease in mortality rate in maleand female flies. Moreover, the observed anti-aging effects were not associated with common confounds of anti-aging prop-erties, such as a decrease in fecundity or metabolic rate.
Hourvash Haghighinejad,Minoo Tarakemehzadeh,Peyman Jafari,Mahtab Jafari,Mani Ramzi,Arvin Hedayati 대한신경정신의학회 2021 PSYCHIATRY INVESTIGATION Vol.18 No.3
Objective The aims of this study were to evaluate the psychometric properties of Persian translation of the Yale Food Addiction Scale 2.0 (YFAS 2.0) as a widely accepted questionnaire for the first time and to establish a cut off score for Food Craving Questionnaire-Trait-reduced (FCQ-T-r).Methods In this cross-sectional study, 330 visitors of family physician clinics in Shiraz, a city located in south of Iran, were selected. The English version of YFAS 2.0 was translated into Persian and used in this study as well as the Persian version of FCQ-T-r.Results Confirmatory factor analysis of YFAS-2 confirmed one dimensional structure and factor loading in all eleven symptoms was above 0.4. Internal consistency for eleven symptoms was 0.813. Prevalence of food addiction in participants was 6.7% (22 participants). BMI and FCQ-T-r questionnaire score both were positively correlated with the number of food addiction symptoms but age was negatively correlated with the number of the symptoms. The ROC curve analysis showed the best suggested cut-off point for FCQ-T-r questionnaire to detect food addiction was 32.5.Conclusion The present study confirmed validity and reliability of Persian version of YFAS-2. It is suggested that food addiction occurs in different level of food craving behavior in different food cultures or genetics.
길윤서,Sally T. Pham,서은경,Mahtab Jafari 대한약학회 2017 Archives of Pharmacal Research Vol.40 No.6
Angelica keiskei (Miq.) Koidz. (Umbelliferae)has traditionally been used to treat dysuria, dyschezia, anddysgalactia as well as to restore vitality. Recently, theaerial parts of A. keiskei have been consumed as a healthfood. Various flavonoids, coumarins, phenolics, acetylenes,sesquiterpene, diterpene, and triterpenes were identified asthe constituents of A. keiskei. The crude extracts and pureconstituents were proven to inhibit tumor growth andameliorate inflammation, obesity, diabetics, hypertension,and ulcer. The extract also showed anti-thrombotic, antioxidative,anti-hyperlipidemic, anti-viral, and anti-bacterialactivities. This valuable herb needs to be further studiedand developed not only to treat these human diseases butalso to improve human health. Currently A. keiskei iscommercialized as a health food and additives in healthdrinks. This article presents a comprehensive review of A. keiskei and its potential place in the improvement of humanhealth.
Terry Lopez,Samuel E. Schriner,Michael Okoro,David Lu,Beatrice T. Chiang,Jocelyn Huey,Mahtab Jafari 한국식품영양과학회 2014 Journal of medicinal food Vol.17 No.12
Green tea is a popular beverage believed to have many health benefits, including a reduction in the risks of heart disease and cancer. Rich in polyphenolic compounds known as catechins, green tea and its components have been shown to increase the lifespan of various animal models, including Drosophila melanogaster. Here, we investigated the genderspecific effects of green tea on the lifespan of fruit flies and observed that green tea extended the lifespan of male flies only. This effect was found to be independent of typical aging interventions, such as dietary restriction, modulation of oxidative energy metabolism, and improved tolerance to environmental stresses. The one exception was that green tea did protect male flies against iron toxicity. Since there is an inverse correlation between lifespan and reproduction, the impact of green tea on male reproductive fitness was also investigated. We found that green tea negatively impacted male fertility as shown by a reduced number of offspring produced and increased mating latency. We further identified that the lifespan extension properties of green tea was only observed in the presence of females which alludes to a reproductive (or mating) dependent mechanism. Our findings suggest that green tea extends the lifespan of male flies by inhibiting reproductive potential, possibly by limiting iron uptake. To our knowledge, our study is the first to report the negative impact of green tea on Drosophila male reproduction. Our results also support previous studies that suggest that green tea might have a negative effect on reproductive fitness in humans.
Samuel E. Schriner,Volkan Coskun,Sean P. Hogan,Cindy T. Nguyen,Terry E. Lopez,Mahtab Jafari 한국식품영양과학회 2016 Journal of medicinal food Vol.19 No.3
The root and rhizome extract of Rhodiola rosea has been extensively used in traditional medicine to improve physical and mental performance and to protect against stress. We, and others, have reported that R. rosea can extend lifespan in flies, worms, and yeast. We also previously found that the extract can act independently of dietary restriction (DR), a treatment that can extend lifespan in a range of model organisms. In flies, DR is implemented through a reduction in dietary yeast content. Here, we report that the ability of R. rosea extract to extend lifespan in flies is dependent on the carbohydrate and caloric content when supplemented with a simplified diet composed of yeast and sucrose. R. rosea extract elevated the sugar content in flies and down-regulated hexokinase expression, suggesting that it perturbs carbohydrate metabolism in flies. In our previous studies, bananas, barley malt, and corn syrup provided dietary carbohydrates, and R. rosea extract could extend lifespan with a range of caloric levels. We conclude that the lifespan-extending effect of R. rosea extract in flies is dependent on dietary carbohydrate and caloric contents coupled with an interaction with complex dietary components present in bananas, barley, or corn.