Anti-aging Effects Research Articles

Hydrogen sulfide inhibits the rupture of fetal membranes throngh anti-aging pathways

IntroductionTo investigate the relationship between hydrogen sulfide(H2S) and the senescence level of the fetal membranes, and to elucidate how H2S affects the integrity of the fetal membranes. MethodsThe H2S and the senescence levels of fetal membranes, and the expressions of H2S synthase CBS and CSE were detected in the preterm (PT) group and the preterm premature ruptured membranes (pPROM) group. The effects of H2S donors and knockdown of CBS on the senescence level of amniotic epithelial cells, and the expression level of matrix metalloproteinases (MMPs) and epithelial-mesenchymal translation (EMT) were observed. ResultsThe level of H2S in the fetal membranes in the pPROM group is significantly lower than that in the PT group matched for gestational age. The level of H2S is negatively correlated with the senescence level of fetal membranes. Treatment with H2S donors reduced cell senescence and MMPs expression, but did not affect EMT. CBS siRNA transfection accelerated the senescence of amniotic epithelial cells, and promoted the expression of MMPs and EMT occurrence, but l-cysteine could reverse these effects. DiscussionOur study suggests that H2S, through its anti-aging effect, can influence the expression of MMPs and EMT, thereby contributing to the maintenance of fetal membrane integrity.

Simultaneously enhanced gas separation and anti-aging performance of intrinsic microporous polyimide by dibromo substitution

Physical aging is a huge challenge hindering the practical gas separation application of high-performance intrinsic microporous polyimides (PIM-PIs). Herein, through precise molecular design, bromine was introduced into the PIM-PI chain to both improve its separation and anti-aging properties. To clarify the anti-aging effect of bromo groups in PIM-PIs, two fluorene-based diamine isomer monomers, 9,9-bis(3-bromo-4-aminophenyl)-fluorene (BBAPF), 2,7-dibromo-9,9-bis(4-aminophenyl)-fluorene (DBBAPF), and their corresponding PIM-PIs (BAPI, BBPI, DBPI) were synthesized. Compared with pristine BAPI membrane, the permeability of BBPI is improved about 50%, which can be attributed to the bromo groups near the amino group suppressing chain densification packing and providing more free volume element (FVE). In addition, the substituted bromo group increased the chain rigidity of the polymer and hindered its rotation, resulting in a lower release of fractional free volume (FFV) during aging process. Particularly, the permeability of the BBPI was maintained at approximately ∼70% with slightly increased selectivity after 250 days, while the pristine BAPI only retained about 50% permeability of N2 (CH4). Our findings proposed an effective strategy for designing microporous polymers with improved permeability and anti-aging properties for practical applications in gas separation membranes.

Phytochemistry and Pharmacology of Eleutherococcus sessiliflorus (Rupr. & Maxim.) S.Y.Hu: A Review.

Eleutherococcus sessiliflorus (Rupr. & Maxim.) S.Y.Hu (E. sessiliflorus), a member of the Araliaceae family, is a valuable plant widely used for medicinal and dietary purposes. The tender shoots of E. sessiliflorus are commonly consumed as a staple wild vegetable. The fruits of E. sessiliflorus, known for their rich flavor, play a crucial role in the production of beverages and fruit wines. The root barks of E. sessiliflorus are renowned for their therapeutic effects, including dispelling wind and dampness, strengthening tendons and bones, promoting blood circulation, and removing stasis. To compile a comprehensive collection of information on E. sessiliflorus, extensive searches were conducted in databases such as Web of Science, PubMed, ProQuest, and CNKI. This review aims to provide a detailed exposition of E. sessiliflorus from various perspectives, including phytochemistry and pharmacological effects, to lay a solid foundation for further investigations into its potential uses. Moreover, this review aims to introduce innovative ideas for the rational utilization of E. sessiliflorus resources and the efficient development of related products. To date, a total of 314 compounds have been isolated and identified from E. sessiliflorus, encompassing terpenoids, phenylpropanoids, flavonoids, volatile oils, organic acids and their esters, nitrogenous compounds, quinones, phenolics, and carbohydrates. Among these, triterpenoids and phenylpropanoids are the primary bioactive components, with E. sessiliflorus containing unique 3,4-seco-lupane triterpenoids. These compounds have demonstrated promising properties such as anti-oxidative stress, anti-aging, antiplatelet aggregation, and antitumor effects. Additionally, they show potential in improving glucose metabolism, cardiovascular systems, and immune systems. Despite some existing basic research on E. sessiliflorus, further investigations are required to enhance our understanding of its mechanisms of action, quality assessment, and formulation studies. A more comprehensive investigation into E. sessiliflorus is warranted to delve deeper into its mechanisms of action and potentially expand its pharmaceutical resources, thus facilitating its development and utilization.

Intense Caloric Restriction from Birth Prevents Cardiovascular Aging in Rats.

We previously demonstrated that a 50% caloric restriction (CR) from birth improves several cardiometabolic risk factors in young rats. In this study, we investigated in middle-aged rats the consequences of a 50% CR from birth on cardiometabolic risk factors, heart function/morphology, ventricular arrhythmia, and fibrillation incidence, and cardiac intracellular proteins involved with redox status and cell survival. From birth to the age of 18 months, rats were divided into an Ad Libitum (AL18) group, which had free access to food, and a CR18 group, which had food limited to 50% of that consumed by the AL18. Resting metabolic rate, blood pressure, and heart rate were recorded, and oral glucose and intraperitoneal insulin tolerance tests were performed. Blood was collected for biochemical analyses, and visceral fat and liver were harvested and weighed. Hearts were harvested for cardiac function, histological, redox status, and western blot analyses. The 50% CR from birth potentially reduced several cardiometabolic risk factors in 18-month-old rats. Moreover, compared with AL18, the CR18 group showed a ∼50% increase in cardiac contractility and relaxation, nearly three to five times less incidence of ventricular arrhythmia and fibrillation, ∼18% lower cardiomyocyte diameter, and ∼60% lower cardiac fibrosis. CR18 hearts also improved biomarkers of antioxidant defense and cell survival. Collectively, these results reveal several metabolic and cardiac antiaging effects of a 50% CR from birth in middle-aged rats.

Wheat germ, a byproduct of the wheat milling industry, as a beneficial source of anti-aging polyamines: A quantitative comparison of various forms.

Polyamines have received a lot of attention since the 1990s because of their anti-aging, anti-chronic disease, and proliferative effects. Wheat germ was reported as one of the natural sources of high polyamine, especially spermidine. The current study used three types of wheat germ: group A was industrially separated germ from whole grain, group B was the commercially available germinated wheat germ, and group C was manually separated wheat germ from germinated grain. The polyamine content of putrescine, spermidine, and spermine has been determined using a simplified isocratic LC-MS/MS method. An optimized extraction procedure was performed on all seven samples for obtaining a polyamine-enriched extract. The three dominant carbomylated polyamines were identified by analyzing the extracted samples in order to determine their relative abundance. Wheat germ powders contain the highest amount of polyamines (220-337 μg/g) of which spermidine is one of the most important. Germinated wheat grains, on the other hand, contain the least amount of this polyamine. The commercially available separated wheat germs are suggested as a good nutrition source of these polyamines.

Antioxidant Profile of Origanum dictamnus L. Exhibits Antiaging Properties against UVA Irradiation

Skin aging mainly occurs due to intrinsic and extrinsic factors. Extrinsic aging is a consequence of exposure to ultraviolet radiation. Meanwhile, natural products exhibit protective properties against skin aging as well as photoaging. In this context, the research on natural anti-aging agents is greatly advanced, and in recent years, numerous plant-based products have been investigated. The aim of this study was to assess the antioxidant profile of Origanum dictamnus L. extract as well as its antiaging effects on 2D cultures of fibroblasts and keratinocytes under UVA irradiation to unravel the potential role of Origanum dictamnus L. in cosmetology. In an attempt to explore the antioxidant profile of the extract, we employed well-established enzymatic assays (DPPH, FRAP, ABTS, and TPC) and a phytochemical screening by LC/MS. According to our findings, the Origanum dictamnus L. extract possesses high scavenging activity (DPPH, ABTS), high phenolic content (TPC), and high Fe(III)-reduction activity (FRAP). Moreover, the LC/MS analysis revealed that the extract was rich in flavonoids, holding a high content of curcumin, kampferol, silymarin, cyanidin-3-glucoside, deosmin, rutin, and quercetin. To gain insight into the bioactivity of Origanum dictamnus L. extract in cell aging, the expression of various genes that are implicated in the skin aging process in keratinocytes and fibroblasts was studied. The gene expression analysis revealed that the extract increases cell proliferation in the cells exposed to UVA irradiation and concomitantly modulates the expression of genes related to the aging process in keratinocytes (KLK7, OCLN, GBA1) and fibroblasts (SIRT2, FOXO3, COL3A1) under the same conditions.

Involvement of the Sch9/Rim15/Msn2 signaling pathway in the anti-aging activity of dendrobine from Dendrobium nobile Lindl. via modification of oxidative stress and autophagy

BackgroundAging is an important pathogenic factor of age-related diseases and has brought huge health threat and economic burden to the society. Dendrobium nobile Lindl., a valuable herb in China, promotes longevity according to the record of ancient Chinese materia medica. This study aimed to discover the material basis of D. nobile as an anti-aging herb and elucidate its action mechanism.MethodsK6001 yeast replicative lifespan assay was used to guide the isolation of D. nobile. The chronological lifespan assay of YOM36 yeast was further conducted to confirm the anti-aging activity of dendrobine. The mechanism in which dendrobine exerts anti-aging effect was determined by conducting anti-oxidative stress assay, quantitative real-time PCR, Western blot, measurements of anti-oxidant enzymes activities, determination of nuclear translocation of Rim15 and Msn2, and replicative lifespan assays of Δsod1, Δsod2, Δcat, Δgpx, Δatg2, Δatg32, and Δrim15 yeasts.ResultsUnder the guidance of K6001 yeast replicative lifespan system, dendrobine with anti-aging effect was isolated from D. nobile. The replicative and chronological lifespans of yeast were extended upon dendrobine treatment. In the study of action mechanism, dendrobine improved the survival rate of yeast under oxidative stress, decreased the levels of reactive oxygen species and malondialdehyde, and enhanced the enzyme activities and gene expression of superoxide dismutase and catalase, but it failed to elongate the replicative lifespans of Δsod1, Δsod2, Δcat, and Δgpx yeast mutants. Meanwhile, dendrobine enhanced autophagy occurrence in yeast but had no effect on the replicative lifespans of Δatg2 and Δatg32 yeast mutants. Moreover, the inhibition of Sch9 phosphorylation and the promotion of nuclear translocation of Rim15 and Msn2 were observed after treatment with denrobine. However, the effect of dendrobine disappeared from the Δrim15 yeast mutant after lifespan extension, oxidative stress reduction, and autophagy enhancement.ConclusionsDendrobine exerts anti-aging activity in yeast via the modification of oxidative stress and autophagy through the Sch9/Rim15/Msn2 signaling pathway. Our work provides a scientific basis for the exploitation of D. nobile as an anti-aging herb.

Saponins from Panax japonicus improve neuronal mitochondrial injury of aging rats

Context Panax japonicus is the dried rhizome of Panax japonicus C.A. Mey. (Araliaceae). Saponins from Panax japonicus (SPJ) exhibit anti-oxidative and anti-aging effects. Objective We evaluated the neuroprotective effects of SPJ on aging rats. Materials and methods Sprague-Dawley rats (18-months-old) were randomly divided into aging and SPJ groups (n = 8). Five-month-old rats were taken as the adult control (n = 8). The rats were fed a normal chow diet or the SPJ-containing diet (10 or 30 mg/kg) for 4 months. An in vitro model was established by d-galactose (d-Gal) in the SH-SY5Y cell line and pretreated with SPJ (25 and 50 µg/mL). The neuroprotection of SPJ was evaluated via Nissl staining, flow cytometry, transmission electron microscopy and Western blotting in vivo and in vitro. Results SPJ improved the neuronal degeneration and mitochondrial morphology that are associated with aging. Meanwhile, SPJ up-regulated the protein levels of mitofusin 2 (Mfn2) and optic atrophy 1 (Opa1) and down-regulated the protein level of dynamin-like protein 1 (Drp1) in the hippocampus of aging rats (p < 0.05 or p < 0.01 vs. 22 M). The in vitro studies also demonstrated that SPJ attenuated d-Gal-induced cell senescence concomitant with the improvement in mitochondrial function; SPJ, also up-regulated the Mfn2 and Opa1 protein levels, whereas the Drp1 protein level (p < 0.05 or p < 0.01 vs. d-Gal group) was down-regulated. Discussion and conclusions Further research on the elderly population will contribute to the development and utilization of SPJ for the treatment of neurodegenerative disorders.

Acteoside palliates d-galactose induced cognitive impairment by regulating intestinal homeostasis.

Acteoside, an important phenylethanol glycoside, is the main active component in Osmanthus fragrans flower. Our previous study found that acteoside showed high antiaging effect but its absorption rate was low. We speculated acteoside palliated aging-related cognitive impairment before being absorbed, that was intestinal homeostasis underlie the antiaging effect of acteoside. In this study, acteoside was confirmed to palliate cognitive impairment in d-galactose induced aging mice. Acteoside treatment dramatically reduced oxidative stress, alleviated intestinal inflammation, restored intestinal mucosal barrier, rebuilt gut microbiome structure and upregulated gut microbiome metabolites short-chain fatty acids (SCFAs) and amino acids (AAs). Furthermore, antibiotic treatment revealed that the antiaging ability of acteoside was abolished in microbiota depleted mice, which offered direct evidence for the essential role of gut microbiota in the attenuation of cognitive impairment of acteoside. Together, our study indicated that acteoside palliated cognitive impairment by regulating intestinal homeostasisand acteoside intake might be a promising nutritional intervention in prevention of neurodegenerative diseases.

Core mechanism and therapeutic methods of aging revealed by Qi-collateral theory in traditional Chinese medicine

Abstract Aging, a complex and multisystem process, has increasingly become a hot issue of global concern. Traditional Chinese medicine has accumulated rich understanding of aging during thousands of years of development, which provides valuable references for the in-depth study of overall aging. According to the Qi-collateral theory in traditional Chinese medicine, essence is the origin of life; Qi is the driving force of life; and spirit is the embodiment of life. This theory interprets key scientific issues such as the formation of life, the driving force of life, the function of Zang-Fu organs, and the spirit and consciousness. Furthermore, it reveals the key mechanism of aging. That is, the deficiency of kidney essence is the root of aging; the loss of vitality is the key of aging; and the depletion of body and spirit is the manifestation of aging. Based on the experience of medical practitioners in the past dynasties, such as nourishing essence, black food tonifying the kidney, and supplementing essence with flesh-blood products, the treatment method of invigorating kidney and supplementing essence, harmonizing Yin and Yang, reinforcing the vitality, and nourishing the body and spirit was proposed. Furthermore, an innovative Chinese patent medicine, Bazi Bushen capsules, is developed, which exerts the antiaging effect by replenishing Qi, invigorating the spirit, and nourishing the body and spirit. Pharmacological and clinical studies have confirmed that this preparation has antiaging effects and are effective in the prevention and treatment of age-related diseases. Experimental studies have shown that Bazi Bushen capsules can delay the overall aging, reduce the DNA methylation and extend the healthy life of naturally aging mice, mitigate the age-related cognitive dysfunction, improve neurological function, maintain redox homeostasis and telomere integrity, and inhibit apoptosis. Moreover, Bazi Bushen capsules can increase the dermal thickness and the collagen fiber and elastic fiber content to prevent skin aging. In addition, Bazi Bushen capsules can correct the lipid metabolism disorders and ameliorate multisystem age-related diseases such as osteoporosis in surgically induced menopausal rats. This article discusses the pathogenesis, treatment, and prescription of aging and the antiaging theory, aiming to provide a basis for delaying aging and preventing related diseases.

Vutiglabridin exerts anti-ageing effects in aged mice through alleviating age-related metabolic dysfunctions

BackgroundAgeing alters the ECM, leading to mitochondrial dysfunction and oxidative stress, which triggers an inflammatory response that exacerbates with age. Age-related changes impact satellite cells, affecting muscle regeneration, and the balance of proteins. Furthermore, ageing causes a decline in NAD+ levels, and alterations in fat metabolism that impact our health. These various metabolic issues become intricately intertwined with ageing, leading to a variety of individual-level diseases and profoundly affecting individuals' healthspan. Therefore, we hypothesize that vutiglabridin capable of alleviating these metabolic abnormalities will be able to ameliorate many of the problems associated with ageing. MethodThe efficacy of vutiglabridin, which alleviates metabolic issues by enhancing mitochondrial function, was assessed in aged mice treated with vutiglabridin and compared to untreated elderly mice. On young mice, vutiglabridin-treated aged mice, and non-treated aged mice, the Senescence-associated beta-galactosidase staining and q-PCR for ageing marker genes were carried out. Bulk RNA-seq was carried out on GA muscle, eWAT, and liver from each group of mice to compare differences in gene expression in various gene pathways. Blood from each group of mice was used to compare and analyze the ageing lipid profile. ResultsSA-β-gal staining of eWAT, liver, kidney, and spleen of ageing mice showed that vutiglabridin had anti-ageing effects compared to the control group, and q-PCR of ageing marker genes including Cdkn1a and Cdkn2a in each tissue showed that vutiglabridin reduced the ageing process. In aged mice treated with vutiglabridin, GA muscle showed improved homeostasis compared to controls, eWAT showed restored insulin sensitivity and prevented FALC-induced inflammation, and liver showed reduced inflammation levels due to prevented TLO formation, improved mitochondrial complex I assembly, resulting in reduced ROS formation. Furthermore, blood lipid analysis revealed that ageing-related lipid profile was relieved in ageing mice treated with vutiglabridin versus the control group. ConclusionVutiglabridin slows metabolic ageing mechanisms such as decreased insulin sensitivity, increased inflammation, and altered NAD+ metabolism in adipose tissue in mice experiments, while also retaining muscle homeostasis, which is deteriorated with age. It also improves the lipid profile in the blood and restores mitochondrial function in the liver to reduce ROS generation.

Ferulic acid-loaded aspasomes: A new approach to enhance the skin permeation, anti-aging and antioxidant effects

Ferulic acid-loaded aspasomes: A new approach to enhance the skin permeation, anti-aging and antioxidant effects

Novel Nanotechnological Strategies for Skin Anti-aging.

Nanoparticle formulations development for anti-aging treatment is increasing due to their multifunctional properties. These nanotechnological strategies can target cellular/ molecular pathways of the skin affected by the aging process. However, a review of these strategies is required to discuss their efficacy/safety and establish the needs for further research. Innovative nanotechnological advances for skin anti-aging/rejuvenation are summarized and discussed in this work. The information in this review was extracted from recent and relevant studies using nanotechnology for anti-aging treatment from scientific databases. Results show an enhanced skin anti-aging effect of actives-loaded nanoparticles of next generation (nanostructured lipid carriers, fullerenes, transfersomes, protransfersomes, niosomes, ethosomes, transethosomes, glycerosomes, phytosomes) compared with nanocarriers of first generation or conventional formulations. Anti-aging active ingredients such as, flavonoids (rutin, hesperidin, quercetagetine, quercetin, epigallocatechin-3-gallate, myricetin, silibinin, curcuminoids, isoflavones); vitamins (E, D₃, CoQ10); acids (hyaluronic, ascorbic, rosmarinic, gallic); extracts (Citrus sinensis, Tagetes erecta</i> L., Achillea millefolium</i> L., Citrus aurantium</i> L., Glycyrrhiza glabra</i> L., Aloe vera</i>, propolis earned by Apis mellifera</i>); and other compounds (adenosine, beta-glucan, heptapetide DEETGEF, resveratrol, cycloastragenol, melatonin, botulinum toxin, grapeseed oil), have been successfully entrapped into nanoparticles for skin rejuvenation. This encapsulation has improved their solubility, bioavailability, stability, permeability, and effectivity for skin anti-aging, providing a controlled drug release with minimized side effects. Recent studies show a trend of anti-aging herbal active ingredients-loaded nanoparticles, enhancing the moisturizing, antioxidant, regenerating and photoprotective activity of the skin. Suitable safety/shelf-life stability of these novel formulations is key to a successful translation to the clinic/industry.

Characterization and mutagenesis of a high-activity and highly substrate-tolerant dipeptidase for L-carnosine biosynthesis via reversed hydrolysis

L-Carnosine (L-Car) is a biologically active dipeptide with antioxidant and anti-aging effects, formed by condensation of β-alanine (β-Ala) with L-histidine (L-His), which is used widely in the pharmaceutical and cosmetic industries. Here we report a dipeptide hydrolase originating from Bacillus megaterium, designated as BmPepD, whose synthetic activity reached 6.5 times that of SmPepD, which is the highest active dipeptidase reported so far for L-Car biosynthesis in vitro. By site-directed saturation mutagenesis, we obtained a significantly improved variant (T171N) of BmPepD. It showed a specific activity of 22.9 U mg−1protein, reaching 1.4 times that of wild-type BmPepD or 9.1 times that of SmPepD, which is the highest ever reported among this enzyme class. After optimizing the reaction conditions of variant BmPepDT171N, we performed the synthetic reaction of L-Car simply from the two free amino acids (0.2 M L-His and 6.5 M β-Ala), achieving a titer of 31.3 mM L-Car with a specific productivity of 283 gCar · gcatalyst−1. This work provides a highly active and substrate (β-alanine)-tolerant dipeptide hydrolase for the facile synthesis of dipeptide L-Car via reversed hydrolysis.

Anti-aging Effect of Allium pseudojaponicum in UVA-irradiated Human Epidermal Keratinocytes.

This study was conducted to investigate the anti-aging effects of Allium pseudojaponicum extract on normal human epidermal keratinocytes (NHEKs). The effects were examined by analyzing gene expressions related to skin hydration using quantitative real-time polymerase chain reaction (qRT-PCR), hyaluronic acid (HA) production using HA-ELISA, cell viability using a cell viability assay, and a phospho-kinase array. Allium pseudojaponicum extract increased the gene expression levels of AQP3/HAS2 and HA protein production in NHEKs while decreasing the overexpressed mRNA levels of KRT1, 10 and FLG genes, known as differentiated keratinocyte markers in NHEKs. Additionally, A. pseudojaponicum extract reduced the phosphorylation of CHK2 and p53 proteins, which are related to cell cycle or epidermal differentiation. This study demonstrated the anti-aging effects of A. pseudojaponicum extract, which could potentially be used as a functional ingredient for skin hydration and anti-aging products.

Applications of Curcumin and Its Nanoforms in the Treatment of Cancer.

Due to the diverse medicinal and pharmacokinetic properties of turmeric, it is well-known in the therapeutic, pharmaceutic, nutraceutical, cosmetic, and dietary industries. It gained importance due to its multitude of properties, such as wound-healing, anti-inflammatory, anti-oxidant, anti-microbial, cytoprotective, anti-aging, anti-cancer, and immunomodulatory effects. Even though the natural healing effect of turmeric has been known to Indians as early as 2500 BCE, the global demand for turmeric has increased only recently. A major reason for the beneficiary activities of turmeric is the presence of the yellow-colored polyphenolic compound called curcumin. Many studies have been carried out on the various properties of curcumin and its derivatives. Despite its low bioavailability, curcumin has been effectively used for the treatment of many diseases, such as cardiovascular and neurological diseases, diabetes, arthritis, and cancer. The advent of nanobiotechnology has further opened wide opportunities to explore and expand the use of curcumin in the medical field. Nanoformulations using curcumin and its derivatives helped to design new treatment modalities, specifically in cancer, because of the better bioavailability and solubility of nanocurcumin when compared to natural curcumin. This review deals with the various applications of curcumin nanoparticles in cancer therapy and broadly tries to understand how it affect the immunological status of the cancer cell.

Protective effects of Aureobasidium pullulans lysate on UV-damaged human skin fibroblasts and HaCaT cells

BackgroundAureobasidium pullulans (A. pullulans) has a wide range of applications. Ultraviolet (UV) rays from the sun can cause skin photoaging. In order to explore the protective effect and application potential of A. pullulans lysate on UV-damaged human skin fibroblasts (HSF) and HaCaT Cells, this study investigates the anti-aging and anti-inflammatory effects of A. pullulans lysate as well as the mechanism of anti-oxidative stress at the cellular and molecular levels through cytotoxicity experiments, enzyme-linked immunosorbent assays (ELISA), and real-time quantitative PCR (RT-qPCR).ResultsThe experimental results have shown that the A. pullulans lysate can effectively reduce the loss of extracellular matrix components (EMC), such as collagen and hyaluronic acid (HA). It is also capable of scavenging excess reactive oxygen species (ROS) from the body, thereby increasing the activity of catalase, decreasing the overexpression of intracellular matrix metalloproteinases (MMPs), enhancing the gene expression of metalloproteinase inhibitors (TIMPs), and decreasing the level of inflammatory factors, reducing UV-induced apoptosis of HaCaT cells. Meanwhile, oxidative stress homeostasis is also regulated through the Nrf2/Keap1 and MAPK signaling pathways.ConclusionsThis study shows that the A. pullulans lysate has the potential to resist photoaging.Graphical

Preparation of Centella asiatica (L). and Hypericum perforatum (St. John's Wort) Plant Extracts and Development of Anti-Aging Herbal Cream Formulations

Objective: The aim of the study is to use two different plant extracts such as St. John's Wort (Hypericum perforatum) and Centella asiatica (L.) in the cream formulation and to determine the anti-aging effect of the new formulation.&#x0D; Material-Method: The plants used in the study were obtained commercially and plant extracts were obtained using the classical extraction techniques in the literature. The active ingredients in the obtained extracts were determined by HPLC method. Physical, protective efficacy, microbial analysis and anti-aging tests were carried out for cream formulations obtained with extracts.&#x0D; Results: Plant extraction studies were carried out in the study. Centella asiatica (L.) was extracted with 20.8% yield at 20 mL of methanol and 60 ℃. As a result of HPLC analysis, it was determined that there were 1740 mg/kg asiatic acid and 4380 mg/kg madecasic acid in the extract. In the extraction studies performed on Hypericum perforatum, the expected active ingredient, hypericin, was not found. For this reason, commercial extract containing 2.5% hyperforin was obtained and the studies were continued on these extracts and final cream formulations were obtained.&#x0D; Conclusion: pH, viscosity, density, protective effectiveness tests and microbial analysis tests of the final formulations were performed. In addition, in vitro anti-aging studies have been carried out in accredited laboratories. With in-vitro anti-aging tests, it was determined that the level of collagen 1A increased more in the formulation where both extracts were used together.

Auricularia auricula Peptides Nutritional Supplementation Delays H2O2-Induced Senescence of HepG2 Cells by Modulation of MAPK/NF-κB Signaling Pathways.

Auricularia auricula is a traditional medicinal and edible mushroom with anti-aging effects. Many studies focused on polysaccharides and melanin. However, the anti-aging effects and mechanism of the nutritional supplementation of Auricularia auricula peptides (AAPs) were not elucidated. In this study, AAPs were prepared by enzymolysis of flavor protease and the protective effects on H2O2-induced senescence of HepG2 cells were explored for the first time. The potential mechanism was also investigated. AAPs were mostly composed of low molecular weights with less than 1000 Da accounting for about 79.17%, and contained comprehensive amino acids nutritionally, including seven essential amino acids, aromatic, acidic, and basic amino acids. AAPs nutritional supplementation could significantly decrease the levels of intracellular reactive oxygen species (ROS) and malondialdehyde (MDA), and increase the activities of antioxidant enzymes (SOD, CAT, and GSH-Px). In addition, the senescence-associated-β-galactosidase (SA-β-gal) activity was restrained, and the expression levels of senescence-associated secretory phenotype (SASP) (IL-6, IL-8, IL-1β, and CXCL2) were also decreased. Ribonucleic acid sequencing (RNA-Seq) was carried out to screen the differentially expressed genes (DEGs) between different groups. GO and KEGG enrichment analysis showed that the mechanism was related to the MAPK/NF-κB signaling pathways. Quantitative real-time PCR (qRT-PCR) analysis and Western blot were carried out to verify the key genes and proteins in the pathways, respectively. AAPs nutritional supplementation resulted a significant down-regulation in key the genes c-fos and c-jun and up-regulation in DUSP1 of the MAPK signaling pathway, and down-regulation in the key genes CXCL2 and IL-8 of the NF-κB signaling pathway. The results of Western blot demonstrate that AAPs nutritional supplementation could inhibit MAPK/NF-κB pathways by reducing the expression levels of IKK, IκB, P65, and phosphorylation of ERK, thus decreasing the inflammatory reaction and delaying cell senescence. It is the first time that AAPs nutritional supplementation was proved to have protective effects on H2O2-induced oxidative damage in HepG2 cells. These results implicate that dietary AAPs could be used as nutrients to reduce the development or severity of aging.

Metabolite profiling, antioxidant and anti-aging activities of Siraitia grosvenorii pomace processed by solid-state fermentation with Eurotium cristatum

Siraitia grosvenorii pomace (SGP) was processed by solid-state fermentation with Eurotium cristatum. Metabolite differences between non-fermented Siraitia grosvenorii pomace (NFSGP) and E. cristatum fermented Siraitia grosvenorii pomace (FSGP) were investigated by LC-MS/MS-based untargeted metabolomic analysis. The antioxidant and anti-aging effect of NFSGP and FSGP was investigated through in vitro and in vivo assays using Caenorhabditis elegans model. Results showed that 263 metabolites had significant changes after fermentation. Fermentation with E. cristatum significantly increase most polyphenols, flavonoids and alkaloids, such as sinapic acid, quercetin and indole. The antioxidant activities of SGP were also significantly enhanced after fermentation by E. cristatum. Furthermore, NFSGP and FSGP could significantly prolong the life-span and enhanced the oxidative and heat stress resistance of C. elegans, and FSGP exhibited greater effects. Our study revealed that fermentation with E. cristatum could improve the nutritional value of SGP.