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Antioxidant-related parameters and anti-inflammatory and antimicrobial activities against Listeria monocytogenes were assessed in eight North East Spain poplar propolis samples. Propolis extracts (PEs) were obtained using 70% ethanol (PEE) and methanol (PME). Yield and total phenol compounds were higher in PEE. Phenolic acids were analyzed by a high-performance liquid chromatograph–diode array detector. Caffeic and ferulic acids were quantified in all PEE and PME. All samples contained p-coumaric acid (quantified in 6 PEE and in 3 PME). Ascorbic acid was detected in all propolis, but mainly quantified in PME (≤0.37 mg/g PE). Biological properties were tested on PEE. As for antiradical activities, trolox equivalent antioxidant capacity (TEAC) [against 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)•+], ranged between 578 and 4620 µmol trolox/g, 2,2-diphenyl-1-picrylhydrazyl (DPPH) (against DPPH free radical), between 0.049 and 0.094 mg/mL, antioxidant activity against hydroxyl (•OH) radical (AOA), between 0.04 and 11.01 mmol uric acid/g, and oxygen radical absorbance capacity (ORAC) against peroxyl (ROO•) radical between 122 and 3282 µmol trolox/g. Results of TEAC, AOA, and ORAC were significantly correlated. IC50 anti-inflammatory activity ranged from 1.08 to 6.19 mg/mL. Propolis showed higher inhibitory activity against L. monocytogenes CECT934 and L. monocytogenes CP101 by agar well diffusion (P <.05) (10.5 and 10.2 mm, respectively) than against L. monocytogenes CP102 (7.0 mm). Data of this research show that North East Spain propolis may be of interest for pharmaceutical and food industry use. [ABSTRACT FROM AUTHOR]

Objective: Inflammation and oxidative stress are major factors in the development of many disorders. Natural antioxidants present in plants can interrupt, decrease, or reduce the oxidation of components sensitive to oxidative processes by scavenging free radicals and lowering oxidative stress. Most anti-inflammatory agents used in the management of inflammatory disorders diminish oxidative damage. The biological potential of Citrus karna Raf. remains undisclosed, despite its richness in several bioactive compounds. Methods: The methanolic extract was evaluated for quantitative phytochemical analysis and antioxidative efficacy using 1,1-diphenyl-2-picrylhydrazyl radical and hydrogen peroxide scavenging activity. A carrageenan-induced paw edema model was employed to evaluate the anti-inflammatory potential as antioxidants exert anti-inflammatory effects. In silico prediction of activity spectra for substance predictions were performed to understand the possible mechanism of action of phytochemicals. Results: Citrus karna methanolic extract (CKME) showed dosedependent radical scavenging effects. The powerful scavenging activity of CKME could be due to the diverse polyphenolic compounds such as ascorbic acid, beta-carotene, and naringin. In addition, the percentage inhibition of paw edema and swelling was observed in CKME-treated rats and mice, which is the same as that of standard drug-treated groups. The Pa value of ascorbic acid, beta-bisabolene, linalool, and naringin is more than 0.7 which shows that these phytoconstituents might contribute to the anti-inflammatory action of extract samples such as CKME. Conclusions: Our findings shows that CKME possess strong antioxidant and anti-inflammatory effects. The richness of plants in polyphenolics such as flavonoids might be a contributing factor for these potential effects. [ABSTRACT FROM AUTHOR]

The manuscript provides an overview of recent scientific reports on the properties and range of health-promoting effects of acerola (Malpighia emarginata DC) fruits and leaves. Acerola is a natural raw material that, in its unprocessed form, is known to be a rich source of vitamin C and polyphenolic compounds. For this reason, the consumption of acerola may provide a number of health-promoting benefits, particularly related to its strong anti-free radical effects. The review discusses anti-inflammatory and anticancer effects of acerola fruit and leaves as well as its therapeutic effects on selected physiological processes in the human system. Their biochemical mechanisms are also explained. Recommendations for the consumption of acerola in the prevention of inflammatory and free radical diseases are presented. The part of the article devoted to anticancer effects of acerola describes the possibilities of using the edible parts of this raw material to obtain products and preparations of potential use in cancer prevention and therapy. [ABSTRACT FROM AUTHOR]

Traditional Chinese medicine (TCM) has been used for centuries to treat various types of inflammation and tumors of the digestive system. Portulaca oleracea L. (POL), has been used in TCM for thousands of years. The chemical composition of POL is variable and includes flavonoids, alkaloids, terpenoids and organic acids and other classes of natural compounds. Many of these compounds exhibit powerful anti-inflammatory and anti-cancer-transforming effects in the digestive system. In this review, we focus on the potential therapeutic role of POL in NASH, gastritis and colitis and their associated cancers, with a focus on the pharmacological properties and potential mechanisms of action of the main natural active compounds in POL. The information and data on Portulaca oleracea L. and its main active ingredients were collated from various resources like ethnobotanical textbooks and literature databases such as CNKI, VIP (Chinese literature), PubMed, Science Direct, Elsevier and Google Scholar (English literatures), Wiley, Springer, Tailor and Francis, Scopus, Inflibnet. Kaempferol, luteolin, myricetin, quercetin, genistein, EPA, DHA, and melatonin were found to improve NASH and NASH-HCC, while kaempferol, apigenin, luteolin, and quercetin played a therapeutic role in gastritis and gastric cancer. Apigenin, luteolin, myricetin, quercetin, genistein, lupeol, vitamin C and melatonin were found to have therapeutic effects in the treatment of colitis and its associated cancers. The discovery of the beneficial effects of these natural active compounds in POL supports the idea that POL could be a promising novel candidate for the treatment and prevention of inflammation-related cancers of the digestive system. The discovery of the beneficial effects of these natural active compounds in POL supports the idea that POL could be a promising novel candidate for the treatment and prevention of inflammation-related cancers of the digestive system. However, clinical data describing the mode of action of the naturally active compounds of POL are still lacking. In addition, pharmacokinetic data for POL compounds, such as changes in drug dose and absorption rates, cannot be extrapolated from animal models and need to be measured in patients in clinical trials. On the one hand, a systematic meta-analysis of the existing publications on TCM containing POL still needs to be carried out. On the other hand, studies on the hepatic and renal toxicity of POL are also needed. Additionally, well-designed preclinical and clinical studies to validate the therapeutic effects of TCM need to be performed, thus hopefully providing a basis for the validation of the clinical benefits of POL. [Display omitted] • POL is a traditional plant that can treat cancers associated with inflammation of the digestive system. • POL exerts its functions in relation to its active ingredients kaempferol, luteolin, myricetin, quercetin, genistein, EPA, DHA, melatonin, apigenin, genistein, lupeol, vitamin C and others. • The natural active ingredients in POL exhibit primarily antioxidant and anti-inflammatory responses, inhibiting the transformation of inflammation into cancer. [ABSTRACT FROM AUTHOR]

Atriplex lindleyi Moq. subsp. inflata from Algeria is known for its traditional use for therapeutic properties. We analysed quantitatively and qualitatively the infusion and diethyl ether, n-butanol and ethereal extracts of A. lindleyi , as well as assessed their acute toxicity, anti-inflammatory, antinociceptive and antioxidant activities. The total phenolic and flavonoid contents were quantified. The anti-inflammatory effect was assessed using a carrageenan-induced paw oedema assay and the antinociceptive effect was evaluated using an acetic acid-induced writhing method. In addition, antioxidant activity was examined by three tests: DPPH, reducing power and phenanthroline assays. The quantity of total phenols in the roots of A. lindleyi was larger than in the aerial parts, while the amounts of total flavonoids were larger in the aerial parts than in the roots. The HPLC profiles allowed us to identify 32 compounds belonging to the phenolic acid and flavonoid classes. Intraperitoneal administration of the infusions and phenolic extracts in mice did not cause any symptoms of toxicity or mortality. Results revealed that the aerial parts and roots of A. lindleyi had potential anti-inflammatory and antinociceptive activities and were higher than diclofenac and paracetamol, respectively. The diethyl ether extract (DEE) of aerial parts and roots showed the greatest antioxidant activity in comparison to the other tested extracts. The phenolic composition attempted to be identified by HPLC confers this plant's pharmacological potential. The antioxidant potential may be due to active ingredients, including ascorbic acid, in the two studied parts of A. lindleyi , which is a bioactive molecule with strong antioxidant properties. Also, detecting salicylic acid, the active antinociceptive ingredient of aspirin, gallic and ferulic acids may justify this subspecies' antinociceptive and anti-inflammatory potentials. [Display omitted] [ABSTRACT FROM AUTHOR]

Three new phenolic glycosides (1 – 3) and a new lignan glycoside (4), together with five known compounds (5 – 9) were isolated from the ethanol extract of the aerial part of Gaultheria leucocarpa var. yunnanensis (Franch.) T.Z.Hsu & R.C.Fang. Their structures were determined on the basis of spectroscopic techniques, experimental and calculated ECD spectra, acid hydrolysis, and enzymatic hydrolysis experiments. All the isolates were evaluated for their anti-inflammatory and antioxidant activities. Compounds 7 and 8 exhibited inhibitory effects against the LPS-induced production of NO with IC 50 of 63.71 and 10.66 μM, respectively, compared to L-NMMA having an IC 50 of 6.95 μM. Besides, compound 7 also represented significant DPPH radical scavenging activity with EC 50 of 18.75 μM, comparable with vitamin C (EC 50 = 15.77 μM). [Display omitted] • Four new (1 – 4) and five known (5 – 9) compounds were isolated from Gaultheria leucocarpa var. yunnanensis. • Compounds 7 and 8 exhibited moderate inhibition against LPS-induced NO production. • Compound 7 showed a comparable DPPH radical scavenging effect to vitamin C. [ABSTRACT FROM AUTHOR]

Synthesis, characterization, antimalarial, antioxidant, anti-inflammatory, molecular docking, DFT, MESP and ADMET studies of thiosemicarbazone ligands-based transition metal(II) complexes. [Display omitted] • Synthesis of new Co(II), Ni(II), Cu(II), Zn(II) complexes from thiosemicarbazone ligands. • Characterization of complexes was done by various analytical techniques. • In vitro antimalarial, antioxidant and anti-inflammatory activities were analyzed. • The Zn(II) complexes (6, 10) were found highly active for biological activities. • Molecular docking, DFT, MESP and ADMET studies were executed to support the in vitro results. Enticed by the current scenario of infectious diseases, eight new Co(II), Ni(II), Cu(II), Zn(II) complexes of thiosemicarbazone ligands were synthesized from benzaldehyde derivatives and 4-(3-fluorophenyl)-3-thiosemicarbazide to ascertain an effective drug for malarial, oxidant, inflammation causing deformities. The compounds (1–10) were characterized by numerous spectral and physical methods which revealed that the complexes have octahedral geometry, amorphous in nature and thermally stable. The antimalarial, antioxidant and anti-inflammatory data highlights that all the compounds (1–10) are remarkably active for malformations of these diseases; and the complexes (5), (6), (10) shows more efficacy to control these ailments while the zinc(II) complex (6) has the highest ability to control the malarial and oxidant dysfunctions with IC 50 value 0.95 ± 0.02 and 2.25 ± 0.06 µM, respectively whereas complexes (6, 10) are highly active for inflammation with IC 50 value 6.86 ± 0.07–7.86 ± 0.01 µM which are comparable with standard drugs (quinine, ascorbic acid and diclofenac sodium). Furthermore, the molecular docking, DFT, MESP and ADMET studies were executed to support the higher antimalarial potency of HL1 ligand (1) and its complexes (3–6) which revealed that the complexes have frequent biological response than their respective ligand (1); and Zn(II) complex (6) is highly efficient for malaria and its effects with various significant computational results like binding interaction, binding energy, binding power, reactivity, no degradation, no carcinogenicity etc. [ABSTRACT FROM AUTHOR]