Antioxidant and Anti-aging Activities of Silybum Marianum Protein Hydrolysate in Mice Treated with D-galactose

Objective In the present study, we investigated the antioxidant and anti‐aging effects of Silybum marianum protein hydrolysate（SMPH） in D‐galactose‐treated mice. Methods D‐galactose（500 mg/kg body weight） was intraperitoneally injected daily for 7 weeks to accelerate aging, and SMPH（400, 800, 1,200 mg/kg body weight, respectively） was simultaneously administered orally. The antioxidant and anti‐aging effects of SMPH in the liver and brain were measured by biochemical assays. Transmission electron microscopy（TEM） was performed to study the ultrastructure of liver mitochondria. Results SMPH decreased triglyceride and cholesterol levels in the D‐galactose‐treated mice. It significantly elevated the activities of superoxide dismutase（SOD） and glutathione peroxidase（GSH‐Px）, and total antioxidant capacity（T‐AOC）, which were suppressed by D‐galactose. Monoamine oxidase（MAO） and malondialdehyde（MDA） levels as well as the concentrations of caspase‐3 and 8‐OHd G in the liver and brain were significantly reduced by SMPH. Moreover, it increased Bcl‐2 levels in the liver and brain. Furthermore, SMPH significantly attenuated D‐galactose‐induced liver mitochondrial dysfunction by improving the activities of Na＋‐K＋‐ATPase and Ca2＋‐Mg2＋‐ATPase as well as mitochondrial membrane potential（ΔΨm） and fluidity. TEM showed that the degree of liver mitochondrial damage was significantly decreased by SMPH. Conclusion The results indicated that SMPH protects against D‐galactose‐induced accelerated aging in mice through its antioxidant and anti‐aging activities.

Evaluation of Serum Anti-Müllerian Hormone (AMH) Values for 28,016 Bulgarian Women: Prognostic Statistical Model of Age Specific AMH Declining

The present study aims to establish a relationship between serum AMH levels and age in a large group of women living in Bulgaria, as well as to establish reference age-specific AMH levels in women that would serve as an initial estimate of ovarian age. A total of 28,016 women on the territory of the Republic of Bulgaria were tested for serum AMH levels with a median age of 37.0 years (interquartile range 32.0 to 41.0). For women aged 20 - 29 years, the Bulgarian population has relatively high median levels of AMH, similar to women of Asian origin. For women aged 30 - 34 years, our results are comparable to those of women living in Western Europe. For women aged 35 - 39 years, our results are comparable to those of women living in the territory of India and Kenya. For women aged 40 - 44 years, our results were lower than those for women from the Western European and Chinese populations, close to the Indian and higher than Korean and Kenya populations, respectively. Our results for women of Bulgarian origin are also comparable to US Latina women at age 30, 35 and 40 ages. On the base on constructed a statistical model to predicting the decline in AMH levels at different ages, we found non-linear structure of AMH decline for the low AMH 3.5) the dependence of the decline of AMH on age was confirmed as linear. In conclusion, we evaluated the serum level of AMH in Bulgarian women and established age-specific AMH percentile reference values based on a large representative sample. We have developed a prognostic statistical model that can facilitate the application of AMH in clinical practice and the prediction of reproductive capacity and population health.

Anti-free radical,anti-oxidative ability and anti-fatigue effects of Huanshaodan An experiment of aging mice

In the theory of traditional Chinese medicine, aging is mainly thought renal deficiency caused renal failure, mainly involving decline of kidney-Yang and deficiency of kidney-essence. Huanshaodan, a Chinese traditional preparation for kidney-replenishing essence, was used to be the preparation for reinforcing renal deficiency and preventing aging for aged people. OBJECTIVE： To observe the effects of Huanshaodan on swimming durance and the abilities of catalase （CAT） in serum and monoamine oxidase-B （MAO-B） in brain tissue as well as in vitro anti-oxidative ability of aging mouse. DESIGN： A controlled animal experiment. SETTING： College of Basic Medicine, Hunan University of Traditional Chinese Medicine. MATERIALS： Fifty-four healthy NIH mice, aged 18 months old, of either gender, weighing （48.9±5.4） g, and one SD male rat, aged 16 months old, weighing 51.7 g, were provided by Animal Experimental Center, Hunan University of Traditional Chinese Medicine. Thirty NIH mice were randomly chosen for swimming test, and divided into experimental group and control group, with 15 in each; The other 24 NIH mice were used for enzyme activity assay, and also divided into experimental group and control group, with 12 in each. SD rat was used for in vitro anti-oxidative ability test, Huanshaodan water decoction was composed of Cheqianzi, Wuweizi, Huaishan, Danggui, Huangbai, Shudi, Baizhi, Niuxi, Baishen, Tusizi, Buguzhi, Roucongrong and Heshouwu 13 Chinese herbs. METHODS： This study was carried out in the Second Laboratory, Department of Biochemistry, Hunan University of Traditional Chinese Medicine in June 2006. Swimming and enzyme activity assay： Mice in the two experimental groups were intragastrically administrated with l0 μL/g Huanshaodan water decoction. Mice in the two control groups were intragastrically administrated with the same amount of normal saline. All the mice were intragastrically administrated for 5 days, and they were free to access to medicine in the other 2 days in a week. Each mouse was administrated for 8 weeks. MAIN OUTCOME MEASURES： ① Forty days after administration, mice in the experimental group and control group for swimming test were loaded at tails and allowed to swim in the water-tank. Swimming durance was recorded. ② Following the method of Chen Qi, the activities of CAT in serum and MAO-B in brain tissue as well as the inhibitory rate of each medicine on malonaldehyde （MDA） content in the in vitro rat hepatic tissue were determined; Meanwhile, the inhibitory rate of different doses of Tusizi liquid to MDA content in the rat hepatic tissue in vitro was also assayed. RESULTS： Fifty-four NIH mice and one SD rat were recruited in this experiment. Three mice died in the swimming test, and all the other animals were involved in the final analysis. ① Swimming durance of mice in the experimental group was significantly longer than that in the control group （ t =7.502, P 〈 0.01 ） . The activity of CAT in serum of mice in the experimental group was significantly higher than that in the control group （ t =13.307, P 〈 0.01 ） . ② The activity of MAO-B in brain tissue of mice in the experimental group was significantly lower than that in the control group （t =l3.27, P 〈 0.01 ） . ③The inhibitory rate of Cheqianzi, Wuweizi, Huaishan, Danggui, Huangbai, Shudi, Baizhi, Niuxi, Baishen, Tusizi, Buguzhi, Roucongrong and Heshouwu 13 Chinese herbs of Huanshaodan to MDA in the rat hepatic tissue in vitro was - 62.9, - 95.1, - 34.9, - 65.1, - 99.1, - 87.2, - 94.1, - 20.0, - 67.0, - 83.7, - 91.0, - 98.4, - 93.0, respectively. ④ The inhibitory rate of low to high dose of Tusizi liquid to MDA content in the rat hepatic tissue in vitro was - 3.41, - 18.1, - 26.6, - 83.7, respectively. CONCLUSION： Huanshaodan enhances swimming endurance, anti-oxygen free radical and anti-oxidativeabilities, and thus, it can delay aging.

Anti-Aging Genes Improve Appetite Regulation and Reverse Cell Senescence and Apoptosis in Global Populations

Appetite regulation by nutritional intervention is required early in life that involves the anti-aging gene Sirtuin 1 (Sirt 1) with Sirt 1 maintenance of other cellular anti-aging genes involved in cell circadian rhythm, senescence and apoptosis. Interests in anti-aging therapy with appetite regulation improve an individual’s survival to metabolic disease induced by gene-environment interactions by maintenance of the anti-aging genes connected to the metabolism of bacterial lipopolysaccharides, drugs and xenobiotics. Interventions to the aging process involve early calorie restriction with appetite regulation connected to appropriate genetic mechanisms that involve mitochondrial biogenesis and DNA repair in neurons. In the aging process as the anti-aging genes are suppressed as a result of transcriptional dysregulation chronic disease accelerations and connected to insulin resistance, non-alcoholic fatty liver disease (NAFLD) and neurodegenerative diseases such as Parkinson’s disease and Alzheimer’s disease. Interests in the gene-environment interaction indicate that the anti-aging gene Sirt 1that regulates food intake has been repressed early in the aging process in various global populations. The connections between Sirt 1 and other anti-aging genes such as Klotho, p66Shc (longevity protein) and Forkhead box proteins (FOXO1/ FOXO3a) have been associated with programmed cell death and alterations in these anti-aging genesregulate glucose, lipid and amyloid beta metabolism that are important to various chronic diseases.

Rehmannia glutinosa exhibits anti-aging effect through maintaining the quiescence and decreasing the senescence of hematopoietic stem cells

Background: The time-related decline in regenerative capacity and organ homeostasis is a major feature of aging. Rehmannia glutinosa and Astragalus membranaceus have been used as traditional Chinese herbal medicines for enhanced immunity and prolonged life. However, the mechanism by which this herbal medicine slows aging is unknown. In this study, we investigated the mechanism of the herbal anti-aging effect.Methods: Mice were fed diets supplemented with R. glutinosa or A. membranaceus for 10 months; the control group was fed a standard diet. The phenotypes were evaluated using a grading score system and survival analysis. The percentages of the senescence phenotypes of hematopoietic stem cells(HSCs) were determined by fluorescence-activated cell sorting analysis. The function and the mechanism of HSCs were analyzed by clonogenic assay and the real-time polymerase chain reaction.Results: The anti-aging effect of R. glutinosa is due to the enhanced function of HSCs. Mice fed with R. glutinosa displayed characteristics of a slowed aging process,including decreased senescence and increased rate of survival. Flow cytometry analysis showed decreased numbers of Lin–Sca1^+c-kit–(LSK) cells, long-term HSCs(LT-HSCs) and short-term HSCs(ST-HSCs) in the R. glutinosa group. In vitro, clonogenic assays showed increased self-renewal ability of LT-HSCs from the R. glutinosa group as well as maintaining LSK quiescence through upregulated p18 expression. The R. glutinosa group also showed decreased reactive oxygen species levels and the percentage of β-gal^+ cells through downregulation of the cellular senescence-associated protein p53 and p16.Conclusion: Rehmannia glutinosa exerts anti-aging effects by maintaining the quiescence and decreasing the senescence of HSCs.

The Hainan papaya extract’s effect on anti-aging,learning and memory of aging model mice induced by D-galactose

Objective:To explore the effects of Hainan papaya extract on learning and memory impairment and anti‑aging in D‑galactose‑induced aging mice.Methods:A total of 72 Kunming mice with normal cognitive ability screened by water maze test were randomly divided into negative control group,model group,piracetam group,high,medium and low dose groups of Hainan papaya extract(400 mg/kg,200 mg/kg,100 mg/kg),with 12 mice in each group.Hainan papaya extract and piracetam group were given the above drugs by gavage every day,The negative control and model groups were given the same amount of 0.9%NaCl solution in the same way.Mice in each group were weighed once a week;At the same time,except for the negative control group,mice in each group were intraperitoneally injected with 2%D‑galactose every day,and the negative control group was intraperitoneally injected with normal saline for 7 weeks.After 7 weeks,We observed each group of mice’s capacity of learning and memory by Morris water maze behavioral test;Then,the content of superoxide dismutase(SOD),malondialdehyde(MDA),catalase(CAT),and nitric oxide synthase(NOS)were measured;On the other hand,we observed the hippocampus’histopathological changes by hematoxylin‑eosin staining,and measured the protein expression of nuclear factor‑E2‑related factor(Nrf2)in brain tissue of mice in each group by Western blot.Results:After the intervention of Hainan papaya extract on aging model mice,the high,medium and low dose groups could shorten the swimming time and swimming distance of mice to varying degrees,increase the activities of SOD,CAT and NOS in mouse brain tissue and reduce the content of MDA,The performance of high dose group was better than piracetam group(P<0.01).At the same time,it can improve the histopathological changes of neurons in mouse hippocampus by reducing neuronal nuclear pyknosis,and increase the expression of Nrf2 protein in mouse brain in a dose‑dependent manner.Conclusion:Hainan papaya extract is able to postpone various physical signs of subacute aging mice caused by D‑galactose,and possesses definite anti‑aging and antioxidant effects,which may be related to the regulation of Nrf2 signal pathway.

Effects of tachykinin neuropeptide NKB and A<i>β</i>(25-35) on antioxidant enzymes status in 17<i>β</i>estradiol treated aging female rats

Aging is the leading risk factor for neurodegenerative diseases and oxidative stress involved in the pathophysiology of these diseases. These changes increase during menopausal condition in females when the level of estradiol is decreased. The aim of the present study was to determine the effect of tachykinin neuropeptide, Neurokinin B (NKB) and Amyloid beta fragment Aβ (25 -?35) on 17β estradiol (E2) treated aging female rat synaptosomes of different age groups. Aging brain functions were assayed by measuring the activities of antioxidant enzymes—superoxide dismutase (SOD) and monoamine oxidase (MAO) with neuropeptides. An in-vitro incubation of Aβ (25 -?35) in E2 treated brain synaptosomes showed toxic effects on all the parameters. However, NKB and NKB combined with Aβ (25 35) showed stimulating effects in E2 treated rat brain synaptosomes. In the present study, an increase in activity of SOD and decrease in the level of MAO, in the presence of NKB and combined NKB and Aβ in E2 treated brain synaptosomes of aging rats. This study elucidates that treatment of NKB and Aβ with E2 incombination exerts more protective influence than their individual application, against excitotoxicity in age related changes.

Behavior and metabolomics study of the anti-aging effects of Scutellaria baicalensis Georgi extract on D-galactose-induced rats

OBJECTIVE Behavior research and urinary metabolomics method were applied to evaluate the anti-aging effects of Scutellaria baicalensis Georgi extract(SBG)in D-galactose-induced rats.METHODS Fifty rats were randomly divided into five groups(n=10in each group).Group 1served as vehicle control with injection of saline(vehicle control group),and the other groups of rats received daily subcutaneously injected with D-galactose(aged model group)at dose of 100mg·kg-1 for ten weeks,respectively.At the same time,rats in groups 3-5were intragastrically administered SBG 〔extracted twice with 60%(V/V)ethanol〕at doses of 50,100 and 200mg·kg-1 for ten weeks,and the rats of groups 1 and 2 were administrated an equal volume of the vehicle.At the tenth week,the learning and memory abilities were examined by Morris water maze.The urine was collected using metabolic cages and analyzed by high-resolution 1HNMR spectroscopy combined with multivariate statistical analyses.Principal component analysis(PCA)was utilized to classify and reveal the differences between the model group and control group.Then,the concentration of these differences was analyzed with t-test to determine whether SBG was possible to influence the metabolic pattern induced by D-galactose.RESULTS Compared with the vehicle control group,the D-galactose-treated aged model group markedly spent longer time(P<0.05)in finding the platform on days 3-5 in the spatial learning acquisition training of Morris water maze test.However,the escape latency was significantly reduced(P<0.05)by long-term administration of SBG(50,100 and 200mg·kg-1)compared with the D-galactose-treated aged model group on days 3-5.In the probe test,the D-galactose-treated aged model group made fewer(P<0.05)platform crossings and distance travelled in target quadrant(P<0.05)than the vehicle control group,and the SBG at doses of 50,100 and 200mg·kg-1 treatments groups could significantly increase(P<0.05)the number of times of crossing over the platform site.The SBG at doses of100 and 200mg·kg-1 treatments groups could significantly increase(P<0.05)the distance travelled in target quadrant compared with the D-galactose-treated aged model group.In addition,the significant difference in metabolic profiling was observed from model group compared with drug-dose group by using PCA,indicating the recovery effect of SBG on D-galactose induced aging rats.Some significantly changed metabolites like glycine,glucose and hexadecanoic acid have been identified.These biochemical changes are related to the the disturbance in aimno acid metabolism,energy metabolism and glycometabolism,which are helpful to further understanding the D-galactose induced aging rats and the therapeutic mechanism of SBG.CONCLUSION These results demonstrate that SBG extract has protective effect on the D-galactose-induced aging in rats.

Potential of Natural Killer Cell Enriched Conditioned Media for Skin Care and Anti-Aging

Natural killer (NK) cell is a type of immune cell and is known to be particularly responsible for innate immunity such as anti-cancer immunity, defense mechanisms against infections, and secretion of various cytokines and chemokines for increasing recruitment of other immune cells. In this study, we investigated the potentials of NK-enriched lymphocytes (NKEL) conditioned media (CM) on skin care for cosmeceutical compositions. Various cytokines of NKEL CM can improve wound healing through epithelial-mesenchymal transition (EMT) by increasing KLKs (kallikreins) and reduce metalloproteinase (MMP)-1 and MMP-2 to inhibit wrinkle formation. Our results suggest that NKEL CM which has various cytokines promotes up-regulation of cell migration and KLKs and down-regulation of MMP-1 and MMP-2 by stimulating HaCaT keratinocytes migration. Therefore, NKEL CM can be used as a cosmetic composition that can play a role in skin regeneration and anti-aging.

The Antioxidant Effects of L-carnitine on D-galactose Induced Aging Mice

[Objective] To study the antioxidant effects of LC on D-galactose induced aging mice. [Method] 50 mice were randomly divided into blank control group, D-galactose model group, LC treatment groups at three levels of 0.25, 0.5 and 1.0 g/（kg d）, a total of 5 groups. Using the subacute D-galactose induced aging models, the mice were killed after 6 weeks of experiment and the activity of Superoxide dismutase （SOD）, Glutathione peroxidase （GSH-Px） and Malondialdehyde （MDA） content in plasma, brain and liver tissue were determined. [ Result.] The activity of SOD and GSH-Px in plasma, brain and liver tissue were significantly increased after treated with LC, while the content of MDA were decreased with a dose-dependent manner. [ Conclusion] LC had anti-aging effects in mice, and the mechanism may be correlated with the antioxidation.

<i>In Vitro</i>Evaluations for a New Topical Anti-Aging Formulation

The study aimed to evaluate the in vitro properties of a new gel formulation (P-3086) as anti-aging treatment. Two in vitro methods aimed to assess and compare the efficacy of the gel formulation in reducing oxidative damages, artificially induced by UVA on skin-derived keratinocytes and in promoting the synthesis of collagen, compared with other four formulations. P-3086 reduced reactive oxygen species production after UVA stress with the highest effect observed at 0.016 mg/ml and 0.031 mg/ml concentration. P-3086 also promoted the collagen synthesis faster when compared with other formulations. The new gel product, based on hyaluronic acid, Vitamin E and Humulus lupulus, showed a good efficacy as anti-aging effect reducing the oxidative damages derived by the action of ROS, moreover stimulating the synthesis of one of the components of the connective tissue, the collagen.

A Prospective Study of Knowledge and Perception towards the Efficacy of Anti-Aging Cosmetics among Female Population of Ras Al Khaimah, UAE

Introduction: Cosmeceutical is a term used to describe cosmetics with antiaging effects these days. The aim of the current study was to determine the efficacy of different type of antiaging dermatological products based on consumer self-assessment and to identify those driving factors that influence women’s purchase of these products and to have an insight into their perception and knowledge about these products. Methods: A prospective study was conducted about the use of antiaging cosmetics, consumer satisfaction, skin concerns related with age, importance of younger looking skin and socioeconomic status. Results and Discussion: It was observed in the study that such products do work to improve skin conditions but the claim that wrinkles could be cured completely could not be determined. Participant reported discrepancies between ideal and real effect of antiaging cosmetics. Even if such cosmetic products are expensive people like to spend on these to fulfill the human dream of looking younger.

<i>In Vivo</i>Evaluations of Emulsion O/W for a New Topical Anti-Aging Formulation: Short-Term and Long-Term Efficacy

This study aims to evaluate the in vivo efficacy in terms of elasticity, hydration and anti-wrinkle enhancement of a new cosmetic cream formulation: Apollinea anti-ageing facial cream. The latter is O/W (oil/water) emulsion with high volume percentages of snail secretion filtrate and donkey milk serum in its composition. The investigation has been performed on (twelve) healthy subjects: 8 (eight) females, and 4 (four) males, all presenting evident skin wrinkles in typical facial areas (e.g. forehead and eye contour). The subjects had to apply about 2 grams of Apollinea anti-ageing facial cream every day. The efficacy of the new cosmetic formulation was assessed before and after the cosmetic treatment, precisely 2 hours, to assess the short-term efficacy, and 40 days after, this to evaluate the product long-term efficacy. Elasticity enhancements have been tested through measurements of the viscoelastic properties of the skin, whereas the hydration parameter through measurements of the skin and subcutaneous tissues dielectric constant. All the latter measurements have been performed with specific instrumentation, as discussed more in detail in the following. To evaluate the anti-wrinkles efficacy instead, we proceeded with digital camera imaging and image analysis processed through ImageJ software. The new Apollinea facial cream cosmetic formulation, based on donkey milk whey and snail secretion filtrate from Helix Aspersa Müller, showed significant enhancement effects on skin elasticity and hydration as well as an important skin-wrinkles-reduction.

A Placebo-Controlled Study Demonstrates the Long-Lasting Anti-Aging Benefits of a Cream Containing Retinol, DihydroxyMethylChromone (DMC) and Hyaluronic Acid

Retinol is an ingredient used in cosmetic products for reducing the appearance of the signs of aging and photo-damage. Currently, most of these products contain 0.1% of retinol. However, at this concentration, some irritation can occur. We have evaluated in vitro and in a clinical study the potential efficacy of a combination of actives to improve the facial skin aging signs while using low concentration of retinol. We demonstrated, in vitro, that a chromone derivative, 5,7-di-hydroxy-2-methyl chromone (DMC), is able to enhance the collagen synthesis in culture of normal human dermal fibroblasts. The enhancement of retinol anti-wrinkle efficacy by DMC was confirmed in a small scale clinical trial. Specifically, a product associating low concentration of retinol (0.04%) and DMC (0.1%) in combination with low molecular weight hyaluronic acid fragments (50,000 Dalton of average molecular weight) has been applied topically for 8 weeks. Clinical results show significant improvement of various signs of facial skin aging such as wrinkles, pigmentary spots, tone unevenness, dullness and the overall photo-damage score. Improvements were still visible 4 weeks after the cessation of the test product application. This study demonstrates that significant lasting improvement of facial skin aging can be obtained with well tolerated low concentration of retinol when adequately formulated with other anti-aging ingredients.

Genetic Cell Therapy in Anti-Aging Regenerative Cosmetology

As post-WWII baby boomer approaching age 80, Anti-Aging Regenerative Cosmetology (AARC) has been developed and patented for beautifying and strengthening the human body using live cells;to enhance the appearance and function of various bodily parts to provide health and aestheticism of human being throughout life. It is a combined cosmetic and preventive medicine to intervene with and to correct the undesirable phenotypic expression of aging. The intrinsic properties of myoblasts and foreskin fibroblasts in development and regeneration are harnessed to formulate a genetic cell therapy program which is safe and efficacious as previously been tested in FDA Phase III clinical trials. Myoblasts are selected for strength development and foreskin fibroblasts for tenacity and smooth-to-the-touch. Both cell types are highly mitotic and non-carcinogenic. In additional to providing large quantities of nuclei as regenerative gene medicine, and of mitochondria as energy generators, myoblasts secret tumor necrosis factor alpha (TNF-α) for skin whitening and melanoma prevention. Myoblasts, because of their small size, spindle shape, and resilience, grow readily on collagen and laminin within wrinkles of skin surfaces, thus enhancing the color, luster, and texture of the skin “plated” with them. Alternatively, they can be injected subcutaneously as cell filler to reduce wrinkles. Intramuscular injection of myoblasts can augment the size, shape, consistency, tone, and strength of muscle groups, improving the lines, contours, and vitality to sculpt a youthful appearance. By improving cell genetics and organ functions, the program holds promise to sustain the human subject in good health and appearance, with a good quality of life and life prolongation.

Efficacy and Tolerance Study of an Oligopeptide with Potential Anti-Aging Activity

Background Oligopeptide-20 acts as positive regulator of cell proliferation and increases collagen and hyaluronic acid levels in keratinocyte and fibroblast cultures. Methods After randomization half the face of twenty volunteers was treated twice daily for two months with the oligopeptide-20 cream (0.003% w/w, 300 ppm) and the other half with the vehicle. Skin bioengineering was used to estimate the effects on human skin. Results The average number and width of wrinkles (Sew, 11.7%, p < 0.05) and cyclic average roughness (cR3, 12.2%, p < 0.005) were improved. Sesc parameter, indicative of stratum corneum dehydration was affected almost equally by the oligopeptide and the vehicle cream (p < 0.1). Volunteers noted statistically significant improvement regarding fine wrinkles and skin brightness on the peptide treated side, whereas the skin smoothness was improved on both sides. No significant changes in pigmentation measured by Mexameter were recorded. No significant changes in transepidermal water loss values were demonstrated, indicating oligopeptide-20 does not affect the skin barrier. No serious adverse or side effects were observed. Additionally, the oligopeptide cream was not irritant according to 48 hr semi-occluded patch test. Conclusion Oligopeptide-20 could be a useful and safe ingredient of anti-aging cosmetics.

Therapeutics of Stem Cell Treatment in Anti-Aging and Rejuvenation

Aging populations are increasing the incidence of age-related diseases, resulting in problems at the individual and socioeconomic level. The need for effective strategies in regenerative medicine for the elderly is more important than ever. Previous studies have shown that the number and function of stem cells decline with age, thereby undermining endogenous repair processes. It has also been suggested that the aging-induced deterioration of stem cell function may play a key role in the pathophysiology of various aging-related diseases. Recent advances in our understanding of tissue regeneration and the development of methods aimed at inducing and differentiating pluripotent stem cells for cell replacement therapy which provides exciting opportunities for the treatment of degenerative diseases, such as those related to senility. In this review article, we examine several mechanisms that are believed to contribute to the aging-related dysfunction of stem cells associated with diseases of the immune system, cardiac tissue, neuronal system, articular cartilage, and skeletal muscle. We also discuss factors that affect the therapeutic potential of adult stem/progenitor cells as well as current trends in the treatment of these conditions using regenerative medicine.

Study on the Efficacy of Vitamin C Lotion on Skin: Permeable and Anti-Aging

Vitamin C (ascorbic acid) plays an important role in maintaining skin health, and topical vitamin C supplementation can counteract oxidative stress induced by UVA, due to excellent reducibility. To clarify the efficacy of vitamin C on the skin in the carrier of lotion, we studied its permeability, irritation and anti-aging effect in vitro and in vivo, using Franz cell system, cell model and clinical test. The permeability test showed that vitamin C with 10%, 15%, 20% and 25% mass ratio could effectively penetrate skin. The 20% of vitamin C lotion (VCL-20%) had the highest efficiency of transdermal penetration and the diffusion percentage reached 84.707% after 24 h. Besides, the permeation quantity of VCL-20% was 1.43 times that of the control group. Irritation test showed that the cytotoxicity of vitamin C lotion was low. And no allergic reaction happened in the occlusive patch test. Compared with the control group, using vitamin C lotion for 28 days could significantly improve subjects’ skin gloss of 10.53% and improve skin color, enhance facial skin elasticity and tightness of 9.20% and reduce wrinkle area of 12.27% (p < 0.05).

Beauty from within: A Review of the Science behind Yuliv^TMCollagen Drink: An Anti-Aging Nutraceutical

The use of nutraceuticals to improve skin properties and decelerate skin aging has been gaining attention among dermatologists, over the last years. In this article, we are presenting the theoretical scientific support for YulivTM Collagen Drink, a liquid supplement containing bovine type I collagen peptides, ascorbic acid and Camellia sinensis (green tea) extract and its benefits on the skin. The available literature shows that the ingredients contained in the supplement have the potential to improve of skin hydration, dermis collagen density, and decrease the fragmentation of the dermal collagen network—and therefore reduce wrinkles and sagging and improving elasticity. Additionally, other health benefits could also be observed, such as protection against oxidative stress, contribution to the normal function of the immune system and reducing tiredness and fatigue, and reduction of skin inflammation, improvement of elasticity and prevention of oxidation. For those benefits to be visible, it is likely that continuous use of at least 4 weeks is needed.

MIL-101(Cr)-NH_(2)负载Ag催化4-硝基苯酚加氢研究

通过水热法制备出MIL-101(Cr)-NH_(2),以MIL-101(Cr)-NH_(2)为载体采用浸渍还原法得到Ag/MIL-101(Cr)-NH_(2)催化剂。通过XRD、N_(2)-吸附脱附曲线和TEM手段对催化剂进行表征。研究了Ag/MIL-101(Cr)-NH_(2)催化4-硝基苯酚(4-NP)加氢生成4-氨基苯酚(4-AP)的性能。结果表明,3wt%Ag/MIL-101(Cr)-NH_(2)样品的催化加氢性能高于其它样品,仅用4 min可将4-NP催化加氢全部转化为4-AP。因此Ag/MIL-101(Cr)-NH_(2)催化剂具有较好的催化4-NP加氢性能。