Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 23
Filter
1.
Molecules ; 27(23)2022 Nov 22.
Article in English | MEDLINE | ID: mdl-36500205

ABSTRACT

Alchemilla vulgaris L. (lady's mantle) was used for centuries in Europe and Balkan countries for treatments of numerous conditions and diseases of the reproductive system, yet some of the biological activities of lady's mantle have been poorly studied and neglected. The present study aimed to estimate the potential of A. vulgaris ethanolic extract from Southeast Serbia to prevent and suppress tumor development in vitro, validated by antioxidant, genoprotective, and cytotoxic properties. A total of 45 compounds were detected by UHPLC-HRMS analysis in A. vulgaris ethanolic extract. Measurement of antioxidant activity revealed the significant potential of the tested extract to scavenge free radicals. In addition, the analysis of micronuclei showed an in vitro protective effect on chromosome aberrations in peripheral human lymphocytes. A. vulgaris extract strongly suppressed the growth of human cell lines derived from different types of tumors (MCF-7, A375, A549, and HCT116). The observed antitumor effect is realized through the blockade of cell division, caspase-dependent apoptosis, and autophagic cell death. Our study has shown that Alchemilla vulgaris L. is a valuable source of bioactive compounds able to protect the subcellular structure from damage, thus preventing tumorigenesis as well as suppressing tumor cell growth.


Subject(s)
Alchemilla , Humans , Alchemilla/chemistry , Antioxidants/pharmacology , Plant Extracts/pharmacology , Plant Extracts/chemistry , Ethanol , Serbia
2.
Mol Cell Biochem ; 477(7): 1893-1903, 2022 Jul.
Article in English | MEDLINE | ID: mdl-35348979

ABSTRACT

Alchemilla viridiflora Rothm., Rosaceae is a herbaceous plant widespread in central Greece, Bulgaria, North Macedonia and Serbia with Kosovo. Liquid chromatography-mass spectrometry analysis leads to the identification of 20 compounds in methanol extract, mainly ellagitannins and flavonoid glycosides. Given that various plant extracts have traditionally been used to treat hypertension and that some of the analyzed methanol extract constituents have beneficial cardiovascular effects, we hypothesized that some of these effects are achieved by inhibiting angiotensin I-converting enzyme (ACE). The dose-dependent ACE inhibitory activities of A. viridiflora and miquelianin were observed with an IC50 of 2.51 ± 0.00 µg/mL of A. viridiflora extract compared to the IC50 of 5.4139 ± 0.00 µM for miquelianin. The contribution of the single compounds to the tested activity was further analyzed through the in silico experimental approach. Computational docking results showed that tiliroside, ellagic acid pentose and galloyl-hexahydroxydiphenoyl-glucose exhibited even better binding affinity for the ACE active site than miquelianin, for which ACE activity was confirmed by an in vitro assay.


Subject(s)
Alchemilla , Alchemilla/chemistry , Chromatography, Liquid , Methanol , Peptidyl-Dipeptidase A , Plant Extracts/chemistry , Plant Extracts/pharmacology
3.
Molecules ; 27(3)2022 Jan 18.
Article in English | MEDLINE | ID: mdl-35163884

ABSTRACT

Liquid chromatography electrospray ionization tandem mass spectrometric (LC-ESI-MS/MS) qualitative and quantitative analysis of different extracts from the aerial parts and roots of Alchemilla acutiloba led to the identification of phenolic acids and flavonoids. To the best of our knowledge, isorhamnetin 3-glucoside, kaempferol 3-rutinoside, narcissoside, naringenin 7-glucoside, 3-O-methylquercetin, naringenin, eriodictyol, rhamnetin, and isorhamnetin were described for the first time in Alchemilla genus. In addition, the antioxidant, anti-inflammatory and cytotoxic activity of all extracts were evaluated. The results clearly showed that among analyzed extracts, the butanol extract of the aerial parts exhibited the highest biological activity comparable with the positive controls used.


Subject(s)
Alchemilla/chemistry , Anti-Inflammatory Agents/pharmacology , Antioxidants/pharmacology , Cytotoxins/pharmacology , Flavonoids/pharmacology , Phenols/analysis , Plant Extracts/analysis , Animals , Chromatography, Liquid , Flavonoids/analysis , Haplorhini , Kidney/drug effects , Kidney/pathology , Plant Extracts/pharmacology , Spectrometry, Mass, Electrospray Ionization , Tandem Mass Spectrometry
4.
Food Chem Toxicol ; 132: 110739, 2019 Oct.
Article in English | MEDLINE | ID: mdl-31374297

ABSTRACT

The aim of the study was to investigate the effects of four Aronia melanocarpa-based juices in a rat model of indomethacin-induced gastric ulceration. THE JUICES WERE: AM1 and AM2 (produced from aronia fruits at 20 °C and 60 °C, respectively), AMRC (a mixture of AM2 with Rosa canina extract) and AMAV (aronia juice with Alchemilla vulgaris). Male Wistar rats were used. Each of the juices (10 ml/kg) was administered for 10 days. Indomethacin (30 mg/kg) was injected subcutaneously and after 4 h, the effects were estimated. Indomethacin caused heavy destructions of the gastric mucosa, increased the expression of Bax and decreased the expression of Bcl-2, induced a certain increase in lipid peroxidation and a slight decrease in gastric PGE2 content. The pretreatment with the juices reduced the severity of indomethacin-induced gastric lesions and antagonized the effects of indomethacin on apoptosis and lipid peroxidation. The highest was the protective effect of AMAV, the juice with the highest polyphenolic content. The protective effect of Aronia melanocarpa-based juices against indomethacin-induced gastric lesions could be attributed to their polyphenolic contents. The mechanism involved to the highest extent in the protective effect of the juices was the inhibition of apoptosis.


Subject(s)
Alchemilla/chemistry , Anti-Inflammatory Agents, Non-Steroidal/toxicity , Fruit and Vegetable Juices , Indomethacin/toxicity , Plant Extracts/pharmacology , Rosa/chemistry , Stomach Ulcer/chemically induced , Stomach Ulcer/prevention & control , Animals , Dinoprostone/metabolism , Disease Models, Animal , Male , Phenols/analysis , Photinia , Phytochemicals/analysis , Rats , Rats, Wistar , Thiobarbituric Acid Reactive Substances/metabolism
5.
Adv Gerontol ; 32(1-2): 180-184, 2019.
Article in Russian | MEDLINE | ID: mdl-31228386

ABSTRACT

In the review are presented the relationship between a rich chemical composition with the breadth of the therapeutic activity of the Alchemilla vulgaris herb. The drugs, based on the Alchemilla vulgaris raw material are widely used medical application is prevention and maintenance in geriatrics, as a lymphotropic, anti-inflammatory, hypoglycemic, hypotensive, nootropic, hemorheological, wound-healing, antioxidant, antispasmodic and a mild diuretic remedy for prevention and maintenance therapy in case of the imbalance of the cardiovascular, digestive, nervous, endocrine, immune, excretory and bone systems.


Subject(s)
Alchemilla , Antioxidants , Geriatrics , Plant Extracts , Aged , Alchemilla/chemistry , Antioxidants/therapeutic use , Humans , Plant Extracts/therapeutic use
6.
J Ethnopharmacol ; 238: 111789, 2019 Jun 28.
Article in English | MEDLINE | ID: mdl-30904703

ABSTRACT

ETHNOPHARMACOLOGICAL RELEVANCE: Alchemilla vulgaris is an important remedy in European folk medicine, known for its astringent and anti-inflammatory properties; it is traditionally used to heal gynecological and gastrointestinal diseases. Despite its folkloric use in wound healing, there is a lack of scientific data to support this therapeutic application. AIM OF THE STUDY: To analyze the wound healing potential of different solvent A. vulgaris extracts per se and after incorporation into hydrogels as topical vehicles, using two complementary methods - in vitro wound healing assay with L929 fibroblasts and in vivo assessment of skin barrier repair potential. Besides scientific justification of the traditional usage, we aimed to ephasize the importance of a proper vehicle for herbal extracts. The wound healing activity has been connected to the chemical profile of the investigated extracts, their antioxidative properties, but also to pH of the investigated gels and their mechanical characteristics. MATERIALS AND METHODS: Antioxidant activity of investigated extracts was estimated using both 2,2-diphenyl-1-picrylhydrazyl and ß-carotene/linoleic acid models. Chemical profile was achieved applying spectrophotometric and HPLC methods. In vitro scratch assay with L929 fibroblasts, and in vivo study of skin barrier repair potential of hydrogels with A. vulgaris extracts on human skin employing biophysical measurements, were performed in order to confirm the wound healing potential of A. vulgaris. Texture analysis of the gels was performed alongside the pH measurements. RESULTS: All tested extracts and gels accelerated the wound healing process while the effect of ethanolic extract on migration of fibroblasts was the most pronounced. The highest extent of wound closure was also observed for the ethanolic extract. The most favorable effect on in vitro wound healing was observed for gel with propyleneglycolic extract. Results of in vivo study were in line with in vitro findings. Healing potential may be attributed to phenolic compounds found in A. vulgaris extracts, low pH of the gels, and the satisfying antioxidant activity of the extracts. Parameters obtained by textural analysis indicated satisfying mechanical properties of the gels, relevant to topical application. CONCLUSION: Our study offers pharmacological evidence on the folkloric use of A. vulgaris in wound treatment, particularly after incorporation into hydrogel, and underlines an importance of a proper vehicle for incorporation of herbal extracts intended for topical treatment.


Subject(s)
Alchemilla , Hydrogels/therapeutic use , Plant Extracts/therapeutic use , Wound Healing/drug effects , Adult , Animals , Cell Line , Double-Blind Method , Female , Humans , Male , Medicine, Traditional , Middle Aged , Phytotherapy , Skin/drug effects , Skin/metabolism , Young Adult
7.
Biomed Pharmacother ; 106: 326-332, 2018 Oct.
Article in English | MEDLINE | ID: mdl-29966977

ABSTRACT

Alchemilla vulgaris and Mimosa tenuiflora (Mimosa) have been used to treat cutaneous wounds as a traditional remedy due to their various biological activities. But, there are only a few studies about the effects of these herbs on wound healing. The purpose of this study is to investigate the wound healing effect of the herbal mixture, consisting of A. vulgaris and Mimosa, in mice and to determine the activity of the extract in vitro. In present study, application of an ointment containing the herbal mixture on the dorsal skin wounds of mice showed that the wound healing process was faster than treatment of Fusidic acid. Histological analysis demonstrated the herbal mixture promoted re-epithelialization, collagen synthesis, and especially the regeneration of skin appendages such as hair follicles. Immunohistochemical analysis revealed the herbal mixture improved angiogenesis and the stabilization of blood vessels, as well as accelerated the formation of granulation tissue. In addition, we demonstrated that herbal mixture enhanced the migration of HaCaT, fibroblasts, and HUVECs on a two-dimensional wound, and promoted the proliferation of macrophages and lymphatic vessels. Our results demonstrated that herbal mixture can promote the migration of keratinocytes, fibroblasts, and endothelial cells, and the proliferation of macrophages and lymphatic vessels. Furthermore, it showed that herbal mixture accelerates wound healing. Therefore, we suggest that herbal mixture may have a potential for therapeutic use for treatment and management of cutaneous wound.


Subject(s)
Alchemilla , Dermatologic Agents/pharmacology , Plant Extracts/pharmacology , Skin/drug effects , Wound Healing/drug effects , Wounds, Penetrating/drug therapy , 3T3-L1 Cells , Administration, Cutaneous , Alchemilla/chemistry , Animals , Cell Movement/drug effects , Cell Proliferation/drug effects , Collagen/metabolism , Dermatologic Agents/administration & dosage , Dermatologic Agents/isolation & purification , Disease Models, Animal , Fibroblasts/drug effects , Fibroblasts/metabolism , Fibroblasts/pathology , Human Umbilical Vein Endothelial Cells/drug effects , Human Umbilical Vein Endothelial Cells/metabolism , Humans , Keratinocytes/drug effects , Keratinocytes/metabolism , Keratinocytes/pathology , Lymphatic Vessels/drug effects , Lymphatic Vessels/metabolism , Lymphatic Vessels/pathology , Macrophages/drug effects , Macrophages/metabolism , Macrophages/pathology , Male , Mice , Mice, Inbred BALB C , Mimosa/chemistry , Neovascularization, Physiologic/drug effects , Ointments , Phytotherapy , Plant Extracts/administration & dosage , Plant Extracts/isolation & purification , Plants, Medicinal , Re-Epithelialization/drug effects , Skin/injuries , Skin/metabolism , Skin/pathology , Time Factors , Wounds, Penetrating/metabolism , Wounds, Penetrating/pathology
8.
Planta Med ; 84(12-13): 941-946, 2018 Aug.
Article in English | MEDLINE | ID: mdl-29797306

ABSTRACT

This paper describes the use of 1H NMR profiling and chemometrics in order to facilitate the selection of medicinal plants as potential sources of collagenase inhibitors. A total of 49 plants with reported ethnobotanical uses, such as the healing of wounds and burns, treatment of skin-related diseases, rheumatism, arthritis, and bone diseases, were initially chosen as potential candidates. The in vitro collagenase inhibitory activity of hydroalcoholic extracts of these plants was tested. Moreover, their phytochemical profiles were analyzed by 1H NMR and combined with the inhibitory activity data by an orthogonal partial least squares model. The results showed a correlation between the bioactivity and the concentration of phenolics, including flavonoids, phenylpropanoids, and tannins, in the extracts. Considering the eventual false-positive effect on the bioactivity given by tannins, a tannin removal procedure was performed on the most active extracts. After this procedure, Alchemilla vulgaris was the most persistently active, proving to owe its activity to compounds other than tannins. Thus, this plant was selected as the most promising and further investigated through bioassay-guided fractionation, which resulted in the isolation of a flavonoid, quercetin-3-O-ß-glucuronide, as confirmed by NMR and HRMS spectra. This compound showed not only a higher activity than other flavonoids with the same aglycone moiety, but was also higher than doxycycline (positive control), the only Federal Drug Administration-approved collagenase inhibitor. The approach employed in this study, namely the integration of metabolomics and bioactivity-guided fractionation, showed great potential as a tool for plant selection and identification of bioactive compounds in natural product research.


Subject(s)
Alchemilla/chemistry , Flavonoids/pharmacology , Matrix Metalloproteinase Inhibitors/pharmacology , Metabolomics , Quercetin/analogs & derivatives , Collagenases , Flavonoids/chemistry , Flavonoids/isolation & purification , Magnetic Resonance Spectroscopy , Matrix Metalloproteinase Inhibitors/chemistry , Matrix Metalloproteinase Inhibitors/isolation & purification , Plants, Medicinal , Quercetin/chemistry , Quercetin/isolation & purification , Quercetin/pharmacology
9.
Phytomedicine ; 39: 125-136, 2018 Jan 15.
Article in English | MEDLINE | ID: mdl-29433674

ABSTRACT

BACKGROUND: Alchemilla mollis (lady's mantle) is a common ingredient in skin care products. However, the protective mechanism of A. mollis against skin problems has not been elucidated. PURPOSE: This study was to investigate the effects of A. mollis ethanolic extract (AM) on UVB-irradiated normal human dermal fibroblasts (NHDF) and hairless mice. METHODS: The in vitro anti-photoaging effect of AM was performed in NHDFs. The antioxidant activities were assessed through DPPH, ABTS, and reactive oxygen species (ROS) assays. Matrix metalloproteinase 1 (MMP-1), IL-6, procollagen type I, and transforming growth factor-ß1 (TGF-ß1) were measured by kits. The protein levels of p-c-Jun, p-c-Fos, Nrf2, NQO-1, HO-1, nuclear NFATc1 and cytosolic p-NFATc1 were evaluated by western blotting. In in vivo, H&E and Masson's trichrome staining were carried out. Skin texture was analyzed using the roughness parameters. The expression of MMP-1, procollagen type I, TGF-ß1 and elastin were measured by western blot. RESULTS: AM included gallic acid as an active constituent. AM exhibited a strong antioxidant effect by inhibiting DPPH and ABTS free radicals, as well as ROS production. It was also found to upregulate transforming growth factor ß1, type I procollagen and elastin expression, and to downregulate matrix metalloproteinase-1 and interleukin-6 expression in AM-treated NHDFs under UVB irradiation. These effects were attributed to AP-1 and Nrf2/ARE signaling pathways. Significantly, it was demonstrated that AM regulated the UVB-induced NFATc1 dephosphorylation in nucleus. Based on dietary data, AM was effective for the prevention of wrinkle formation, skin thickening, water loss, and erythema in UVB-exposed mouse skin. CONCLUSION: Our data indicate that A. mollis provides protection from UVB exposure in both hairless mice skin in vivo and NHDFs in vitro. AM might therefore be useful as a cosmetic material and functional food for the prevention of UVB-induced human skin photoaging.


Subject(s)
Alchemilla/chemistry , Antioxidants/pharmacology , NFATC Transcription Factors/metabolism , Plant Extracts/pharmacology , Skin Aging/drug effects , Animals , Antioxidant Response Elements/drug effects , Collagen Type I/genetics , Collagen Type I/metabolism , Dietary Supplements , Fibroblasts/drug effects , Fibroblasts/radiation effects , Gallic Acid/analysis , Humans , Male , Mice, Hairless , NF-E2-Related Factor 2/metabolism , Plant Extracts/chemistry , Reactive Oxygen Species/metabolism , Skin Aging/radiation effects , Ultraviolet Rays/adverse effects
10.
Bull Exp Biol Med ; 163(3): 374-377, 2017 Jul.
Article in English | MEDLINE | ID: mdl-28744637

ABSTRACT

We studied toxicity and antiviral activity of bioactive substances extracted from the roots (ethylacetate extracts) and aerial parts (ethanol extracts) of lady's mantle (Alchemilla vilgaris L.). Plant extracts are characterized by low toxicity for continuous Vero cell culture, but inhibit the reproduction of orthopoxviruses (vaccinia virus and ectromelia virus) in these cells. Of all studied extracts, ethylacetate extract from lady's mantle roots characterized by the highest content of catechins in comparison with other samples demonstrated the highest activity in vitro towards the studied viruses (neutralization index for vaccinia and ectromelia viruses were 4.0 and 3.5 lg, respectively). The antiviral effect of Alchemilla vulgaris L. extracts was shown to be dose dependent.


Subject(s)
Alchemilla/chemistry , Antiviral Agents/pharmacology , Ectromelia virus/drug effects , Plant Extracts/pharmacology , Vaccinia virus/drug effects , Viral Load/drug effects , Acetates , Animals , Antiviral Agents/chemistry , Chlorocebus aethiops , Dose-Response Relationship, Drug , Ectromelia virus/growth & development , Ethanol , Microbial Sensitivity Tests , Plant Components, Aerial/chemistry , Plant Extracts/chemistry , Plant Roots/chemistry , Solvents , Vaccinia virus/growth & development , Vero Cells
11.
Biomed Pharmacother ; 86: 172-176, 2017 Feb.
Article in English | MEDLINE | ID: mdl-27978496

ABSTRACT

Alchemilla mollis (Buser) Rothm aerial part and root methanolic-water extracts were evaluated for their hepatoprotective activity on carbon tetrachloride induced hepatotoxicity and hypoglycemic activity on alloxan-induced diabetic mice. None of the tested extracts exhibited effects on blood glucose levels. However hepatoprotective activity results have revealed that serum ALT levels were significantly lowered by both the aerial part and root extracts at doses of 100mg/kg and 200mg/kg. Histopathological examination showed that A. mollis aerial parts and roots induced significant recovery from cellular damage; when compared to the carbon tetrachloride group, the most significant activity was observed with A. mollis aerial part extracts at a dose of 200mg/kg. There is evidence of a hepatoprotective activity of A. mollis on the phenolic content of the plant, especially in the case of flavonoids, which have potent antioxidant properties.


Subject(s)
Alchemilla , Diabetes Mellitus, Experimental/drug therapy , Hypoglycemic Agents/therapeutic use , Liver/drug effects , Plant Extracts/therapeutic use , Animals , Diabetes Mellitus, Experimental/pathology , Drug Evaluation, Preclinical/methods , Female , Hypoglycemic Agents/isolation & purification , Hypoglycemic Agents/pharmacology , Liver/pathology , Male , Mice , Plant Components, Aerial , Plant Extracts/isolation & purification , Plant Extracts/pharmacology , Plant Roots , Protective Agents/isolation & purification , Protective Agents/pharmacology , Protective Agents/therapeutic use , Rats , Rats, Sprague-Dawley
12.
Nat Prod Commun ; 10(10): 1705-8, 2015 Oct.
Article in English | MEDLINE | ID: mdl-26669107

ABSTRACT

Phytochemical investigations of Alchemilla persica Rothm. growing in Iran were performed taking into account both the volatile and polar constituents. The hydrodistilled essential oil was analysed by GC-MS that revealed the presence of alkanes (27.8%), diterpenoids (19.6%) and sesquiterpene hydrocarbons (17.1%) as the major constituents, while tannins and flavonol glycosides were identified as the most abundant constituents of the methanol extract by HPLC-MS. A. persica can be a valuable source of ellagitannins and polyphenols.


Subject(s)
Alchemilla/metabolism , Alchemilla/chemistry , Chromatography, High Pressure Liquid , Gas Chromatography-Mass Spectrometry , Iran , Oils, Volatile/chemistry , Plant Components, Aerial/chemistry , Plant Oils/chemistry
13.
Nat Prod Commun ; 10(8): 1369-71, 2015 Aug.
Article in English | MEDLINE | ID: mdl-26434119

ABSTRACT

The present study evaluated the anti-Helicobacterpylori activity of Alchemilla glabra Neygenf. (A. sect. Alchemilla), A. monticola Opiz (A. sect. Plicatae S.E. Fröhner), A. fissa Günther & Schummel (A. sect. Calycinae (Buser) Buser) and A. viridiflora Rothm. (A. sect. Calycinae), and identified ellagic acid and quercetin-3-O-ß-glucoside. Anti-H. pylori activity was tested against ten clinical isolates and one reference strain (ATCC 43504). The methanol extracts were more active than the dichloromethane and cyclohexane extracts. The ranges of concentrations were between 4 µg/mL for methanol extracts of A. viridiflora, A. glabra and A. monticola, and 256 µg/mL for cyclohexane extracts of A. viridiflora, A. glabra and A. fissa. The best overall activity was obtained with A. monticola extracts. No significant difference was found in the ellagic acid contents of the methanol extracts of the tested Alchemilla species (0.2-0.3 mg/mL), and anti-H. pylori activity was similar (4-32 µg/mL). Ellagic acid exhibited strong activity at very low concentrations (0.125-0.5 µg/mL), while the second identified compound, quercetin-3-O-ß-D-glucoside, was also very active in concentration of 2-16 µg/mL.


Subject(s)
Alchemilla/chemistry , Anti-Bacterial Agents/pharmacology , Helicobacter pylori/drug effects , Plant Extracts/pharmacology , Anti-Bacterial Agents/chemistry , Helicobacter Infections , Helicobacter pylori/physiology , Humans , Plant Extracts/chemistry
14.
Arch Gynecol Obstet ; 292(3): 619-28, 2015 Sep.
Article in English | MEDLINE | ID: mdl-25700659

ABSTRACT

PURPOSE: The aim of the present study is to evaluate the treatment potential of Alchemilla mollis (Buser) Rothm. and Alchemilla persica Rothm. in the experimentally induced endometriosis model in rats. METHODS: Endometriosis was surgically induced in rats by autotransplanting endometrial tissue to abdominal wall. Thirty-six rats were randomly divided into six groups. The groups were orally treated with the methanol:water (80:20) extracts of aerial parts and roots of A. mollis and A. persica. Buserelin acetate (20 mg) was used as the reference drug. The phytochemical contents of the most active extracts were determined by high performance liquid chromatography. RESULTS: The cystic formation was determined to be significantly decreased with the aerial part extract of A. mollis. A reduction in the endometrioma was also determined for the aerial part extract of A. persica group. However, significant reduction on the levels of cytokine were recorded for the A. mollis aerial part extract group. Therefore, the phytochemical contents of the aerial part extracts of A. mollis. and A. persica were analyzed. CONCLUSION: The results of the present study revealed that the aerial part extracts of A. mollis and A. persica could be beneficial in the treatment of endometriosis.


Subject(s)
Alchemilla/chemistry , Endometriosis/drug therapy , Phytotherapy , Plant Extracts/administration & dosage , Animals , Chromatography, High Pressure Liquid , Endometriosis/metabolism , Female , Humans , Male , Plant Components, Aerial/chemistry , Plant Extracts/therapeutic use , Plant Roots/chemistry , Rats , Rats, Sprague-Dawley
15.
J Trace Elem Med Biol ; 31: 274-8, 2015.
Article in English | MEDLINE | ID: mdl-25451083

ABSTRACT

Alchemilla, commonly called "lady's mantle", is a genus of herbaceous perennial plants belonging to the family Rosaceae. The species Alchemilla velebitica is found only in Southern Europe, like in the Croatian National Park Northern Velebit. Its benefits, such as a astringent and emmenagogue activity as well as wound healing are correlated to the organic compounds found in the plant, but also certain trace elements are known to reduce skin lesions, such as zinc, selenium, copper, manganese, silicon and lithium. Thus the objective of the present study was the elemental characterization of leaves, blossoms and roots of A. velebitica. After acidic microwave assisted digestion the concentrations of selected essential and trace elements were determined by inductively coupled plasma--atomic emission spectrometry and inductively coupled plasma--mass spectrometry. Other minor elements, such as Al, B, Cu, Fe, Mn, Sr and Zn are also found in leaves, blossoms and roots with contents in µg/kg range. The preparation of decoctions and the extraction yields of the elements of interest are calculated.


Subject(s)
Alchemilla/chemistry , Plants, Medicinal/chemistry , Teas, Medicinal/analysis , Trace Elements/analysis , Copper/analysis , Croatia , Manganese/analysis , Mass Spectrometry/methods , Microwaves , Plant Extracts/analysis , Plant Extracts/chemistry , Selenium/analysis , Zinc/analysis
16.
Drug Discov Ther ; 7(5): 189-95, 2013 Oct.
Article in English | MEDLINE | ID: mdl-24270383

ABSTRACT

Influenza virus infection is a major public health problem that leads to significant morbidity and mortality. The emergence of resistance to the currently available anti-influenza agents has necessitated the development of new drugs with novel targets. Studying known ethno-medicinal plants is a promising approach for the discovery of new antiviral compounds. Alchemilla mollis is used in traditional medicine in Europe for different indications, including minimizing the symptoms of a sore throat. In this study, we found that A. mollis extract has anti-influenza activity, and investigated the mechanism underlying its inhibition of influenza virus replication. Plaque assays demonstrated that treatment of cells with A. mollis extract prior to infection did not inhibit influenza virus infection. However, plaque formation was markedly reduced when infected cells were overlaid with an agarose gel containing A. mollis extract. In addition, exposure of the virus to A. mollis extract prior to infection and treatment of cells during virus infection significantly suppressed plaque formation. Influenza virus-induced hemagglutination of chicken red blood cells was inhibited by A. mollis extract treatment. The inhibitory effect was observed against influenza A virus subtypes H1N1, H3N2, and H5N2. These findings suggest that A. mollis extract has virucidal or neutralizing activity against influenza virus particles. Furthermore, inhibitory effect of zanamivir synergistically increased after combination with A. mollis extract. Our results suggest that A. mollis extract has the potential to be developed as an antiinfluenza agent.


Subject(s)
Alchemilla/chemistry , Antiviral Agents/pharmacology , Plant Extracts/pharmacology , Virus Replication/drug effects , Animals , Antiviral Agents/administration & dosage , Chickens , Dogs , Drug Synergism , Erythrocytes/drug effects , Erythrocytes/metabolism , Hemagglutination Inhibition Tests , Humans , Influenza A Virus, H1N1 Subtype/drug effects , Influenza A Virus, H3N2 Subtype/drug effects , Influenza A Virus, H5N2 Subtype/drug effects , Influenza, Human/drug therapy , Madin Darby Canine Kidney Cells , Medicine, Traditional , Orthomyxoviridae/drug effects , Plant Extracts/administration & dosage , Zanamivir/administration & dosage , Zanamivir/pharmacology
17.
Nat Prod Commun ; 7(6): 761-6, 2012 Jun.
Article in English | MEDLINE | ID: mdl-22816302

ABSTRACT

Alchemilla mollis (Buser) Rothm. (Rosaceae) is a high-mountain medicinal plant growing in the Balkan Peninsula, with only one population in Bulgaria. Alchemilla plants (Lady's mantle) are commonly used in traditional medicine for treatment of many gynecological diseases. The commercial drugs "Herba Alchemillae" induce a rapid regeneration of skin epithelium and have styptic and anti-inflammatory actions. Because of the high content of phenolic compounds (tannins and flavonoids) and the ecological plasticity of the species, field cultivation or in vitro biomass production of A. mollis are possible alternatives to its collection from nature. Four MS based nutrient media differing in the concentration of the minerals and supplemented with alpha-naphthaleneacetic acid (NAA) and benzylaminopurine (BAP) were tested in order to examine their influence on the shoot multiplication effectiveness and the antioxidant activity of A. mollis, and also the possible relation between these parameters under the conditions of in vitro culture. The cultures grown for two months on these media differed significantly in their multiplication rates (p < 0.001), as well as in their morphological features--height, leaf color and root development. Methanol extracts of in vitro cultivated and ex vitro adapted and acclimated on Vitosha Mt. (1500 m a. s. l.) plants were analyzed for tannin and flavonoid content and for free radical scavenging activity. The contents of flavonoids and tannins in the in vitro cultures of A. mollis cultivated on the four tested media differed significantly (p < 0.05). The highest flavonoid content was found in the shoots cultivated on the control MS medium, as well as in the ex vitro adapted plants. The antioxidant activity of the in vitro cultures correlated positively with the concentrations of the PGRs in the respective media, and the ex vitro adapted plants had the highest antioxidant activity (IC50 13.1 +/- 1.9 microg/mL) commensurable with that of the commercial antioxidant butylated hydroxytoluene (BHT) used as a positive control, with an IC50 of 12.65 microg/mL.


Subject(s)
Alchemilla/chemistry , Antioxidants/chemistry , Antioxidants/pharmacology , Polyphenols/chemistry , Alchemilla/drug effects , Plant Growth Regulators/pharmacology
18.
Article in English | MEDLINE | ID: mdl-23983376

ABSTRACT

This study identified flavonoid glycosides in species of the genus Alchemilla, A. procerrima, A. stricta, A. hirtipedicellata and A. sericata. A. procerrima is an endemic species for Turkey. After detailed investigation, flavonoid compounds of the species were identified for the first time. In this study, flavonoid compounds were determined by using two different chromatography techniques, TLC and HPLC. The following flavonoid compounds were identified from the Alchemilla species studied. They are as follows: orientin (luteolin-8-C-glucoside) Rf: 0,70, vitexin (apigenin-8-C-glucoside) Rf: 0,77 as flavone-C-glycoside, rutin (quercetin-3-O-rutinoside) Rf: 0,44, hyperoside (quercetin-3-O-galactoside) Rf: 0,65, isoquercetin (quercetin-3-O-glucopyranoside) Rf: 0,72, quercitrin (quercetin-3-O-rhamnoside) Rf: 0,84 as flavonol-O-glycoside. Three more folavonoids with Rf values of Rf1=0,36, Rf2=0,54 and Rf3=0,68 were also identified for the first time in this study. Rutin (quercetin-3-O-rutinoside) and the flavonoid glycoside, shown as Rf2 were found in all species. Quercitrin and isoquercetin were determined in all analysed species but A. procerrima. Hyperoside was identified in all species except for A. stricta. Vitexin was determined only in A.stricta. Orientin was determined in A. procerrima and A. stricta, but could not be determined in A. sericata and A. hirtpedicellata. Unknown flavonoid with Rf1 and Rf3 were determined outside of A. sericata. Description of these compounds in Turkish Alchemilla plants for the first time should be viewed as a discovery of an important chemosystematic feature.


Subject(s)
Alchemilla/chemistry , Flavonoids/analysis , Glycosides/analysis , Plant Extracts/chemistry , Chromatography, High Pressure Liquid , Chromatography, Thin Layer , Turkey
19.
Diabetes Res Clin Pract ; 92(1): 92-9, 2011 Apr.
Article in English | MEDLINE | ID: mdl-21247651

ABSTRACT

OBJECTIVE: The aim of this study was to evaluate the chronic wound healing properties of tannin rich plant extracts. METHODS: The cell growth stimulating potential of 128 procyanidin rich plant extracts was evaluated in in vitro cell culture models. For clinical trial, a 3% solution of two plant extracts having synergistic effect on cell growth was prepared in glycerol and honey. Placebo test product contained only glycerol and honey. 93 adult patients with one or more lower extremity deep wounds were divided at randomly in two groups. 41 patients in the placebo (AS-22) and 52 in the active treatment (AS-21) groups having respectively 49 and 69 wounds of a mean surface area of 56.70 and 52.03 cm(2), and volume of 57.22 and 52.15 cm(3), were treated by applying the test products topically for a period of 6-weeks. RESULTS: A statistically significant difference was observed between the placebo and the AS-21 treated groups with respect to reduction in the wound surface area (33.37 vs 97.87%) and wound volume (29.45 vs 94.17%) after 6-weeks of treatment. Mean wound humidity and pain scores were also reduced. CONCLUSION: Tannin rich plant extracts are highly interesting for the treatment of chronic wounds.


Subject(s)
Fibroblasts/cytology , Fibroblasts/drug effects , Plant Extracts/pharmacology , Plant Extracts/therapeutic use , Wound Healing/drug effects , Alchemilla/chemistry , Animals , Azadirachta/chemistry , Camellia sinensis/chemistry , Cattle , Cell Line , Cells, Cultured , Epithelial Cells/cytology , Epithelial Cells/drug effects , Humans , Mimosa/chemistry , Panax/chemistry , Vaccinium/chemistry , Vitis/chemistry
20.
Nat Prod Commun ; 6(12): 1851-4, 2011 Dec.
Article in English | MEDLINE | ID: mdl-22312723

ABSTRACT

Antioxidant capacity of the methanolic extract of Alchemilla mollis was measured by its ability to scavenge the DPPH radical. The EtOAc fraction obtained after partition of the total extract was found to be the most active radical scavenger (IC50 9.8 +/- 1.8 microg/mL) and was subjected to fractionation by Sephadex LH-20 CC. Further purification by RP-18 CC led to the isolation of eight flavonoid glycosides: cis- and trans-tiliroside (1 and 2), rhodiolgin (3), hyperoside (4), isoquercitrin (5), miquelianin (6), sinocrassoside D2 (7), and gossypetin-3-O-beta-D-galactopyranosyl-7-O-alpha-L-rhamnopyranoside (8). It was found that 8 is a new compound and its antioxidant activity is also reported. Identification of the isolated compounds was carried out by spectroscopic and spectrometric analysis (1D and 2D NMR, UV and MS).


Subject(s)
Alchemilla/chemistry , Flavonoids/isolation & purification , Free Radical Scavengers/isolation & purification , Plant Extracts/analysis , Flavonoids/chemistry , Flavonoids/pharmacology , Free Radical Scavengers/chemistry , Free Radical Scavengers/pharmacology
SELECTION OF CITATIONS
SEARCH DETAIL