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Molecules (Basel, Switzerland) Jan 2020Honey, propolis, bee pollen, bee bread, royal jelly, beeswax and bee venom are natural products which have been used in medicine since ancient times. Nowadays, studies... (Review)
Review
Honey, propolis, bee pollen, bee bread, royal jelly, beeswax and bee venom are natural products which have been used in medicine since ancient times. Nowadays, studies indicate that natural bee products can be used for skin treatment and care. Biological properties of these products are related to flavonoids they contain like: chrysin, apigenin, kaempferol, quercetin, galangin, pinocembrin or naringenin. Several pharmacological activities of phenolic acids and flavonoids, and also 10-hydroxy--2-decenoic acid, which is present in royal jelly, have been reported. Royal jelly has multitude of pharmacological activities: antibiotic, antiinflammatory, antiallergenic, tonic and antiaging. Honey, propolis and pollen are used to heal burn wounds, and they possess numerous functional properties such as: antibacterial, anti-inflammatory, antioxidant, disinfectant, antifungal and antiviral. Beeswax is used for production of cosmetics and ointments in pharmacy. Due to a large number of biological activities, bee products could be considered as important ingredients in medicines and cosmetics applied to skin.
Topics: Animals; Bees; Biological Products; Dermatology; Fatty Acids; Flavonoids; Honey; Hydroxybenzoates; Pollen; Propolis; Skin Care
PubMed: 32012913
DOI: 10.3390/molecules25030556 -
RIFM fragrance ingredient safety assessment, 5- and 6-decenoic acid, CAS Registry Number 72881-27-7.Food and Chemical Toxicology : An... Jul 2021The existing information supports the use of this material as described in this safety assessment. 5- and 6-Decenoic acid was evaluated for genotoxicity, repeated dose... (Review)
Review
The existing information supports the use of this material as described in this safety assessment. 5- and 6-Decenoic acid was evaluated for genotoxicity, repeated dose toxicity, reproductive toxicity, local respiratory toxicity, phototoxicity/photoallergenicity, skin sensitization, and environmental safety. Data from read-across analog oleic acid (CAS # 112-80-1) show that 5- and 6-decenoic acid is not expected to be genotoxic. The repeated dose, reproductive, and local respiratory toxicity endpoints were evaluated using the threshold of toxicological concern (TTC) for a Cramer Class I material, and the exposure to 5- and 6-decenoic acid is below the TTC (0.03 mg/kg/day, 0.03 mg/kg/day, and 1.4 mg/day, respectively). The skin sensitization endpoint was completed using the dermal sensitization threshold (DST) for non-reactive materials (900 μg/cm); exposure is below the DST. The phototoxicity/photoallergenicity endpoints were evaluated based on ultraviolet/visible (UV/Vis) spectra; 5- and 6-decenoic acid is not expected to be phototoxic/photoallergenic. The environmental endpoints were evaluated; 5- and 6-decenoic acid was found not to be persistent, bioaccumulative, and toxic (PBT) as per the International Fragrance Association (IFRA) Environmental Standards, and its risk quotients, based on its current volume of use in Europe and North America (i.e., Predicted Environmental Concentration/Predicted No Effect Concentration [PEC/PNEC]), are <1.
Topics: Animals; Bacteria; Consumer Product Safety; Decanoic Acids; Endpoint Determination; Fatty Acids, Monounsaturated; Humans; Odorants; Perfume; Risk Assessment
PubMed: 33836208
DOI: 10.1016/j.fct.2021.112172 -
Metabolites Aug 2023Alzheimer's disease (AD) represents a significant public health concern in modern society. Metabolic syndrome (MetS), which includes diabetes mellitus (DM) and obesity,... (Review)
Review
Alzheimer's disease (AD) represents a significant public health concern in modern society. Metabolic syndrome (MetS), which includes diabetes mellitus (DM) and obesity, represents a modifiable risk factor for AD. MetS and AD are interconnected through various mechanisms, such as mitochondrial dysfunction, oxidative stress, insulin resistance (IR), vascular impairment, inflammation, and endoplasmic reticulum (ER) stress. Therefore, it is necessary to seek a multi-targeted and safer approach to intervention. Thus, 10-hydroxy-2-decenoic acid (10-HDA), a unique hydroxy fatty acid in royal jelly, has shown promising anti-neuroinflammatory, blood-brain barrier (BBB)-preserving, and neurogenesis-promoting properties. In this paper, we provide a summary of the relationship between MetS and AD, together with an introduction to 10-HDA as a potential intervention nutrient. In addition, molecular docking is performed to explore the metabolic tuning properties of 10-HDA with associated macromolecules such as GLP-1R, PPARs, GSK-3, and TREM2. In conclusion, there is a close relationship between AD and MetS, and 10-HDA shows potential as a beneficial nutritional intervention for both AD and MetS.
PubMed: 37623897
DOI: 10.3390/metabo13080954 -
Pharmaceuticals (Basel, Switzerland) Nov 2015Biofilms are complex communities of microorganisms in organized structures attached to surfaces. Importantly, biofilms are a major cause of bacterial infections in... (Review)
Review
Biofilms are complex communities of microorganisms in organized structures attached to surfaces. Importantly, biofilms are a major cause of bacterial infections in humans, and remain one of the most significant challenges to modern medical practice. Unfortunately, conventional therapies have shown to be inadequate in the treatment of most chronic biofilm infections based on the extraordinary innate tolerance of biofilms to antibiotics. Antagonists of quorum sensing signaling molecules have been used as means to control biofilms. QS and other cell-cell communication molecules are able to revert biofilm tolerance, prevent biofilm formation and disrupt fully developed biofilms, albeit with restricted effectiveness. Recently however, it has been demonstrated that Pseudomonas aeruginosa produces a small messenger molecule cis-2-decenoic acid (cis-DA) that shows significant promise as an effective adjunctive to antimicrobial treatment of biofilms. This molecule is responsible for induction of the native biofilm dispersion response in a range of Gram-negative and Gram-positive bacteria and in yeast, and has been shown to reverse persistence, increase microbial metabolic activity and significantly enhance the cidal effects of conventional antimicrobial agents. In this manuscript, the use of cis-2-decenoic acid as a novel agent for biofilm control is discussed. Stimulating the biofilm dispersion response as a novel antimicrobial strategy holds significant promise for enhanced treatment of infections and in the prevention of biofilm formation.
PubMed: 26610524
DOI: 10.3390/ph8040816 -
Maedica Dec 201910-Hydroxy-2-decenoic acid (10-HDA) as the main component of royal jelly has pharmacological characteristics. But the influence of 10-HDA on skin photoaging and photo...
10-Hydroxy-2-decenoic acid (10-HDA) as the main component of royal jelly has pharmacological characteristics. But the influence of 10-HDA on skin photoaging and photo damage is poorly understood. In the present study, we used 10-HAD immediately after UVA exposure and tested the effects on the attenuation of LMNAÄ150 expression in cultured human dermal fibroblasts Human dermal fibroblasts (cultured cells) were exposed to UVA irradiation. The mRNA level of LMNAÄ150 was determined by Taqman Real-Time PCR Assay. Real-time PCR analysis of LMNAÄ150 transcripts indicated that the level of LMNAÄ150 transcripts was higher in the UVA exposed group than the group treated with 10-HAD after UVA exposure (>8.22-fold). The LMNAÄ150 expression is down-regulated in human dermal fibroblasts after treatment with 10-HDA. It can be concluded that treatment with 10-HDA suppresses the UVA-induced gene expression of LMNAÄ150 and protects skin from UVA-induced photoaging and photo damage.
PubMed: 32153662
DOI: 10.26574/maedica.2019.14.4.327 -
Food and Chemical Toxicology : An... Oct 2020
Review
Topics: Animals; Consumer Product Safety; Decanoic Acids; Endpoint Determination; Humans; Odorants; Perfume; Risk Assessment; Salmonella typhimurium
PubMed: 32640339
DOI: 10.1016/j.fct.2020.111541 -
Endocrine, Metabolic & Immune Disorders... Dec 2012Royal jelly is a food for queen and larvae honeybees. 10-Hydroxy-trans-2-decenoic acid (10H2DA; "royal jelly acid") is the principal lipid component in royal jelly.... (Review)
Review
Royal jelly is a food for queen and larvae honeybees. 10-Hydroxy-trans-2-decenoic acid (10H2DA; "royal jelly acid") is the principal lipid component in royal jelly. Several pharmacological activities of 10H2DA have been reported: anti-tumor, anti-biotic, immunomodulatory, estrogenic and neurogenic. We recently revealed an inhibitory effect of 10H2DA in innate immune signals. Despite appreciable advances in studies on innate immune signals after the identification of Toll-like receptors as innate immune receptors, few studies have reported the effect of 10H2DA on innate immune signals. In this review, we focus on recent advances in the evaluation of the biological activities of 10H2DA (especially immunomodulatory activities). We also discuss the molecular mechanisms underpinning these biological activities, which could lead to new therapeutic targets for the treatment of immune disorders.
Topics: Adaptive Immunity; Animals; Antineoplastic Agents; Antirheumatic Agents; Arthritis, Rheumatoid; Collagen; Epigenomics; Fatty Acids; Fatty Acids, Monounsaturated; Humans; Immunity, Innate; Immunologic Factors; Ion Channels; Neurogenesis; Receptors, Estrogen
PubMed: 23061418
DOI: 10.2174/187153012803832530 -
ChemSusChem May 202210-Hydroxy-2-decenoic acid (10-HDA) is a terminal hydroxylated medium-chain α,β-unsaturated carboxylic acid that performs various unique physiological activities and...
10-Hydroxy-2-decenoic acid (10-HDA) is a terminal hydroxylated medium-chain α,β-unsaturated carboxylic acid that performs various unique physiological activities and has a wide market value. Therefore, development of an environmentally friendly, safe, and high-efficiency route to synthesize 10-HDA is required. Here, the β-oxidation pathway of Escherichia coli was modified and a P450 terminal hydroxylase (CYP153A33-CPR ) was rationally designed to synthesize 10-HDA using decanoic acid as a substrate via two-step whole-cell catalysis. Different homologues of FadDs, FadEs, and YdiIs were analyzed in the first step of the conversion of decanoic acid to trans- -2- decenoic acid. In the second step, CYP153A33 (M228L)-CPR efficiently catalyzed the conversion of trans- -2- decenoic acid to 10-HDA. Finally, 217 mg L 10-HDA was obtained with 500 mg L decanoic acid. This study provides a strategy for biosynthesis of 10-HDA and other α, β-unsaturated carboxylic acid derivatives from specific fatty acids.
Topics: Carboxylic Acids; Catalysis; Decanoic Acids; Escherichia coli; Fatty Acids, Monounsaturated
PubMed: 34796684
DOI: 10.1002/cssc.202102152 -
Molecules (Basel, Switzerland) Feb 2022Persistent infections caused by biofilms pose a major threat to global public health. 10-Hydroxy-2-decenoic acid (10-HDA), a main fatty acid in royal jelly, has been...
Persistent infections caused by biofilms pose a major threat to global public health. 10-Hydroxy-2-decenoic acid (10-HDA), a main fatty acid in royal jelly, has been shown to possess various biological activities. The purpose of this study was to explore the effects of 10-HDA on the biofilms and virulence of and its potential molecular mechanism. Quantitative crystal violet staining indicated that 10-HDA significantly reduced the biofilm biomass at sub-minimum inhibitory concentration (MIC) levels (1/32MIC to 1/2MIC). Scanning electron microscope (SEM) observations demonstrated that 10-HDA inhibited the secretion of extracellular polymeric substances, decreased bacterial adhesion and aggregation, and disrupted biofilm architecture. Moreover, 10-HDA could significantly decrease the biofilm viability and effectively eradicated the mature biofilms. It was also found that the hemolytic activity of was significantly inhibited by 10-HDA. qRT-PCR analyses revealed that the expressions of global regulators , , and α-hemolysin gene were downregulated by 10-HDA. These results indicate that 10-HDA could be used as a potential natural antimicrobial agent to control the biofilm formation and virulence of .
Topics: Staphylococcus aureus
PubMed: 35268586
DOI: 10.3390/molecules27051485 -
Animals : An Open Access Journal From... Jul 2022The purposes of this study were to explore the potential possibility of 10-hydroxy-trans-2-decenoic acid (10-HDA) use in feeding broiler chickens. A total of 216 healthy...
The purposes of this study were to explore the potential possibility of 10-hydroxy-trans-2-decenoic acid (10-HDA) use in feeding broiler chickens. A total of 216 healthy 1-day-old chicks were divided into 2 treatments at random (diets supplemented with 0 or 40 mg/kg 10-HDA, respectively) with 6 replicates of 18 birds each, and were then reared for 42 days. The results found that a diet supplemented with 10-HDA significantly increased average daily gain of broiler chickens in d 22~42 and d 0~42. Compared with the control group, dietary inclusion of 10-HDA markedly increased the serum concentrations of immunoglobulin (Ig) G at d 21, as well as IgM and interleukin (IL)-10 at d 42, while decreasing the levels of tumor necrosis factor (TNF)-α at d 21, as well as IL-6, TNF-α, and IL-1β at d 42. Furthermore, broiler chickens fed a diet with 10-HDA had a higher (p < 0.05) serum activity of superoxide dismutase at d 42. Additionally, serum malondialdehyde content also decreased notably at d 21 and d 42. These results made it clear that 10-HDA increased the growth performance of broiler chickens, possibly by enhancing immune function and antioxidant capacity.
PubMed: 35883394
DOI: 10.3390/ani12141846