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Pintać Šarac D, Torović L, Orčić D, Mimica-Dukić N, Đorđević T, Lesjak M. Comprehensive study of phenolic profile and biochemical activity of monovarietal red and white wines from Fruška Gora region, Serbia. Food Chem 2024; 448:139099. [PMID: 38547704 DOI: 10.1016/j.foodchem.2024.139099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 02/23/2024] [Accepted: 03/19/2024] [Indexed: 04/24/2024]
Abstract
This paper presents a comprehensive study of commercially available monovarietal red and white wines from Fruška Gora mountain in Serbia, conducted to characterize their chemical and biochemical properties. Namely, 72 wines of 18 different Vitis vinifera varieties, including international, domestic and autochthonous ones, were assessed. Phenolic profile of wines was determined qualitatively, using spectrophotometric methods, and quantitatively, using LC-MS/MS and HPLC-UV/VIS methods. Quantified phenolic compounds pointed out differences between red and white wines, where some compounds stood out as distinctive characteristic of analyzed varieties, while others served as chemotaxonomic markers of the Fruška Gora region. Antioxidant and inhibitory properties towards acetylcholinesterase were evaluated for all wines and their relation to phenolic composition was investigated. This study is valuable since chemical and biochemical properties of domestic and autochthonous Fruška Gora varieties are reported for the first time. Also, international varieties studied herein gave distinctive information about the terroir of Fruška Gora region, which is scarce in scientific literature.
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Affiliation(s)
| | - Ljilja Torović
- University of Novi Sad Faculty of Medicine, Novi Sad, Serbia
| | - Dejan Orčić
- University of Novi Sad Faculty of Sciences, Novi Sad, Serbia
| | | | | | - Marija Lesjak
- University of Novi Sad Faculty of Sciences, Novi Sad, Serbia
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Pintać Šarac D, Tremmel M, Vujetić J, Torović L, Orčić D, Popović L, Mimica-Dukić N, Lesjak M. How do in vitro digestion and cell metabolism affect the biological activity and phenolic profile of grape juice and wine. Food Chem 2024; 449:139228. [PMID: 38604033 DOI: 10.1016/j.foodchem.2024.139228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 03/28/2024] [Accepted: 04/01/2024] [Indexed: 04/13/2024]
Abstract
Cabernet Sauvignon grape juice and wine underwent in vitro digestion, resulting in a reduction of most phenolic compounds (10%-100% decline), notably impacting anthocyanins (82%-100% decline) due to pH variations. However, specific phenolics, including p-hydroxybenzoic, protocatechuic, vanillic, p-coumaric, gallic and syringic acids, and coumarin esculetin, increased in concentration (10%-120%). Grape juice and wine samples showed comparable polyphenolic profile during all phases of digestion. Antioxidant activity persisted, and inhibition of angiotensin-I converting enzyme was improved after the digestion process, likely because of increased concentrations of listed phenolic acids and esculetin. Digested grape juice displayed comparable or superior bioactivity to red wine, indicating it as a promising source of accessible grape polyphenols for a broader audience. Nevertheless, Caco-2 cell model metabolization experiments revealed that only 3 of 42 analyzed compounds passed to the basolateral compartment, emphasizing the significant impact of digestion on polyphenol bioactivity, suggesting potential yet unmeasurable and overlooked implications for human health.
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Affiliation(s)
| | - Martina Tremmel
- University of Regensburg Faculty of Chemistry and Pharmacy, Regensburg, Germany
| | - Jelena Vujetić
- Institute of Food Technology in Novi Sad (FINS), University of Novi Sad, Novi Sad, Serbia
| | - Ljilja Torović
- University of Novi Sad Faculty of Medicine, Novi Sad, Serbia
| | - Dejan Orčić
- University of Novi Sad Faculty of Sciences, Novi Sad, Serbia
| | | | | | - Marija Lesjak
- University of Novi Sad Faculty of Sciences, Novi Sad, Serbia
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Pintać D, Četojević-Simin D, Berežni S, Orčić D, Mimica-Dukić N, Lesjak M. Corrigendum to "Investigation of the chemical composition and biological activity of edible grapevine (Vitis vinifera L.) leaf varieties" [Food Chem. 286 (2019) 686-695]. Food Chem 2024; 433:137414. [PMID: 37709638 DOI: 10.1016/j.foodchem.2023.137414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Affiliation(s)
- Diandra Pintać
- University of Novi Sad Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia; University of Novi Sad Faculty of Medicine, Hajduk Veljkova 3, 21000 Novi Sad, Serbia.
| | - Dragana Četojević-Simin
- University of Novi Sad Faculty of Medicine, Oncology Institute of Vojvodina, Put doktora Goldmana 4, 21204 Sremska Kamenica, Serbia
| | - Sanja Berežni
- University of Novi Sad Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
| | - Dejan Orčić
- University of Novi Sad Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
| | - Neda Mimica-Dukić
- University of Novi Sad Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
| | - Marija Lesjak
- University of Novi Sad Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
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Simin N, Živanović N, Božanić Tanjga B, Lesjak M, Narandžić T, Ljubojević M. New Garden Rose ( Rosa × hybrida) Genotypes with Intensely Colored Flowers as Rich Sources of Bioactive Compounds. Plants (Basel) 2024; 13:424. [PMID: 38337955 PMCID: PMC10857594 DOI: 10.3390/plants13030424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 01/28/2024] [Accepted: 01/30/2024] [Indexed: 02/12/2024]
Abstract
Garden roses, known as Rosa × hybrida, hold a prominent position as one of the most important and economically valuable plants in horticulture. Additionally, their products-essential oil, rose water, concrete, and concentrate-find extensive use in the cosmetic, pharmaceutical, and food industries, due to their specific fragrances and potential health benefits. Rose flowers are rich in biologically active compounds, such as phenolics, flavonoids, anthocyanins, and carotenoids. This study aims to investigate the potential of five new garden rose genotypes with intensely colored flowers to serve as sources of biologically active compounds. Phenolic profile was evaluated by determination of total phenolic (TPC), flavonoid (TFC), and monomeric anthocyanins (TAC) contents and LC-MS/MS analysis of selected compounds. Antioxidant activity was evaluated via DPPH and FRAP assays, neuroprotective potential via acethylcholinesterase inhibition assay, and antidiabetic activity viaα-amylase and α-glucosidase inhibition assays. The flowers of investigated genotypes were rich in phenolics (TPC varied from 148 to 260 mg galic acid eq/g de, TFC from 19.9 to 59.7 mg quercetin eq/g de, and TAC from 2.21 to 13.1 mg cyanidin 3-O-glucoside eq/g de). Four out of five genotypes had higher TPC than extract of R. damascene, the most famous rose cultivar. The dominant flavonoids in all investigated genotypes were glycosides of quercetin and kaempferol. The extracts showed high antioxidant activity comparable to synthetic antioxidant BHT, very high α-glucosidase inhibitory potential, moderate neuroprotective activity, and low potential to inhibit α-amylase.
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Affiliation(s)
- Nataša Simin
- Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
| | - Nemanja Živanović
- Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
| | | | - Marija Lesjak
- Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
| | - Tijana Narandžić
- Faculty of Agriculture, University of Novi Sad, Trg Dositeja Obradovića 8, 21000 Novi Sad, Serbia
| | - Mirjana Ljubojević
- Faculty of Agriculture, University of Novi Sad, Trg Dositeja Obradovića 8, 21000 Novi Sad, Serbia
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Grafakou ME, Barda C, Pintać D, Lesjak M, Heilmann J, Skaltsa H. Prenylated Acylphloroglucinols from Hypericum jovis with Anti-inflammatory Potential. Planta Med 2021; 87:1184-1191. [PMID: 34388832 DOI: 10.1055/a-1556-9721] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Thirteen prenylated acylphloroglucinols (1: -13: ), including 2 previously undescribed compounds (1: ) and (2: ), were isolated from Hypericum jovis. Their structures were elucidated by high-field NMR spectroscopy. The isolated prenylated acylphloroglucinols were evaluated for their anti-inflammatory effects in vitro through the reduction of the intercellular adhesion molecule 1 expression induced by TNF-α in the human microvascular endothelial cells 1 cell line. Compounds 3, 5, 6, 8,: and 12: significantly reduced intercellular adhesion molecule 1 expression in a concentration-dependent manner with IC50 values of 16.9, 34.4, 4.0, 3.2, and 7.7 µM, respectively. In addition, compound 12: showed notable inhibitory activity on the formation of cyclooxygenase-1- and 12-lipoxygenase-derived inflammatory mediators in an ex vivo cyclooxygenase-lipoxygenase assay. Eleven further constituents were isolated (14: -24: ), including the rare quercetin 3-O-(2-O-acetyl)-arabinofuranoside (18: ).
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Affiliation(s)
- Maria-Eleni Grafakou
- Department of Pharmacognosy & Chemistry of Natural Products, Faculty of Pharmacy, School of Health Sciences, National & Kapodistrian University of Athens, Greece
- Chair of Pharmaceutical Biology, Faculty of Pharmacy and Chemistry, University of Regensburg, Germany
| | - Christina Barda
- Department of Pharmacognosy & Chemistry of Natural Products, Faculty of Pharmacy, School of Health Sciences, National & Kapodistrian University of Athens, Greece
| | - Diandra Pintać
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Serbia
| | - Marija Lesjak
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Serbia
| | - Jörg Heilmann
- Chair of Pharmaceutical Biology, Faculty of Pharmacy and Chemistry, University of Regensburg, Germany
| | - Helen Skaltsa
- Department of Pharmacognosy & Chemistry of Natural Products, Faculty of Pharmacy, School of Health Sciences, National & Kapodistrian University of Athens, Greece
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Pintać D, Četojević-Simin D, Berežni S, Orčić D, Mimica-Dukić N, Lesjak M. Investigation of the chemical composition and biological activity of edible grapevine (Vitis vinifera L.) leaf varieties. Food Chem 2019; 286:686-695. [PMID: 30827664 DOI: 10.1016/j.foodchem.2019.02.049] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 02/04/2019] [Accepted: 02/11/2019] [Indexed: 12/22/2022]
Abstract
Chemical composition and bioactivity of eight edible Vitis vinifera L. leaf varieties originating from Fruška Gora, Serbia, including two autochthonous varieties, were evaluated. The LC-MS/MS analysis confirmed the presence of 28 natural products in leaf samples, among which most abundant were glycosylated flavonoids, ellagic and chlorogenic acids. The highest amounts of most of the tested compounds were detected in leaves of autochthonous variety Sila. Bioactivity was assessed by a set of in vitro antioxidant, neuroprotective and cytotoxic assays. Leaves of all examined varieties exhibited average bioactivity, with leaves of autochthonous variety Župljanka standing out as the most promising sample. To conclude, investigated grapevine leaves proved to be a rich source of nutraceuticals, primarily antioxidants, and their further employment as medicinal food in human diet and beneficial raw material for food, pharmaceutical and cosmetic industries should be supported.
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Affiliation(s)
- Diandra Pintać
- University of Novi Sad Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia.
| | - Dragana Četojević-Simin
- University of Novi Sad Faculty of Medicine, Oncology Institute of Vojvodina, Put doktora Goldmana 4, 21204 Sremska Kamenica, Serbia
| | - Sanja Berežni
- University of Novi Sad Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
| | - Dejan Orčić
- University of Novi Sad Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
| | - Neda Mimica-Dukić
- University of Novi Sad Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
| | - Marija Lesjak
- University of Novi Sad Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
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Lesjak M, Balesaria S, Skinner V, Debnam ES, Srai SKS. Quercetin inhibits intestinal non-haem iron absorption by regulating iron metabolism genes in the tissues. Eur J Nutr 2018; 58:743-753. [PMID: 29594477 PMCID: PMC6437293 DOI: 10.1007/s00394-018-1680-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 03/27/2018] [Indexed: 01/24/2023]
Abstract
Purpose There is general agreement that some dietary polyphenols block non-haem iron uptake, but the mechanisms by which they achieve this action are poorly understood. Since the polyphenol quercetin is ingested daily in significant amounts, we have investigated the effect of quercetin on duodenal non-haem iron absorption in vivo, as well as its effect on factors known to be involved in systemic iron metabolism. Methods Rats were subject to gastric gavage and systemic quercetin administration. Treatments were followed with uptake studies using radiolabeled iron, serum iron and transferrin saturation measurements, LC-MS/MS analysis of quercetin metabolites in serum, determination of tissue non-haem iron content and analysis of gene expression of iron-related proteins. Results Both oral and intraperitoneal (IP) quercetin caused serum and tissue iron depletion by two means, first by increasing mucosal iron uptake and inhibiting iron efflux from duodenal mucosa, and second by decreasing levels of duodenal DMT1, Dcytb and FPN. Additionally, IP quercetin induced highly significant increased liver expression of hepcidin, a hormone known to inhibit intestinal iron uptake. Conclusions Oral quercetin significantly inhibited iron absorption, while IP quercetin significantly affected iron-related genes. These results could lead to development of new effective ways of preventing and treating iron deficiency anaemia, the most widespread nutritional disorder in the world. Electronic supplementary material The online version of this article (10.1007/s00394-018-1680-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Marija Lesjak
- Division of Biosciences, Research Department of Structural and Molecular Biology, University College London, Darwin Building, Gower Street, London, WC1E 6BT, UK. .,Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, Novi Sad, 21000, Serbia.
| | - Sara Balesaria
- Division of Biosciences, Research Department of Structural and Molecular Biology, University College London, Darwin Building, Gower Street, London, WC1E 6BT, UK
| | - Vernon Skinner
- Division of Biosciences, Research Department of Structural and Molecular Biology, University College London, Darwin Building, Gower Street, London, WC1E 6BT, UK
| | - Edward S Debnam
- Division of Biosciences, Research Department of Neuroscience, Physiology and Pharmacology, University College London, Royal Free Campus, Rowland Hill Street, London, NW3 2PF, UK
| | - Surjit Kaila S Srai
- Division of Biosciences, Research Department of Structural and Molecular Biology, University College London, Darwin Building, Gower Street, London, WC1E 6BT, UK.
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Knezevic P, Aleksic Sabo V, Simin N, Lesjak M, Mimica-Dukic N. A colorimetric broth microdilution method for assessment of Helicobacter pylori sensitivity to antimicrobial agents. J Pharm Biomed Anal 2018; 152:271-278. [PMID: 29448222 DOI: 10.1016/j.jpba.2018.02.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 02/02/2018] [Accepted: 02/03/2018] [Indexed: 12/11/2022]
Abstract
Helicobacter pylori is a major infective etiological agent of the upper gastrointestinal tract diseases. The bacterium exhibits resistance to various conventional antibiotics, being usually challenging for eradication. Since there is an urge to consider alternative therapeutic strategies, the aim of the study was to examine selected essential oils of plants belonging to families Cupressaceae (Juniperus communis) and Lamiaceae (Hyssopus officinalis, Salvia officinalis, Melissa officinalis, Lavandula angustifolia, Ocimum basilicum and Thymus serpyllum) against H. pylori, using an improved microdilution broth method. The oils were examined in concentration range from 0.03 to 4 μL/mL. The method comprises Brain-heart infusion broth supplemented with yeast extract, horse serum and IsoVitaleX. After 3 day incubation, an equal volume of double strengthen Christensen's urea was added into each well and incubated for additional 4 h. In wells with present H. pylori, the medium changed color from yellow to purple, allowing MIC determination even without a microtitre plate reader. The microtitre format method is convenient as it is less expensive, easier to perform and requires less amount of an anti-H. pylori agent. The improved method enhances specificity to H. pylori, as fast urease activity is almost an exclusive property of this bacterium. The application of the second step incubation with Christensen's urea decreases the possibility of false positive/negative results due to contaminant growth or commonly poor H. pylori growth. Among the examined oils, J. communis, H. officinalis and O. basilicum were not active with the highest applied concentrations, while the most active was T. serpyllum, with MIC 2.0-4.0 μL/mL. This is the first report on essential oils activity of T. serpyllum and H. officinalis against H. pylori.
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Affiliation(s)
- Petar Knezevic
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 3, 21 000 Novi Sad, Vojvodina, Serbia.
| | - Verica Aleksic Sabo
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 3, 21 000 Novi Sad, Vojvodina, Serbia
| | - Natasa Simin
- Department of Chemistry, Biochemistry and Environmental protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 3, 21 000 Novi Sad, Vojvodina, Serbia
| | - Marija Lesjak
- Department of Chemistry, Biochemistry and Environmental protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 3, 21 000 Novi Sad, Vojvodina, Serbia
| | - Neda Mimica-Dukic
- Department of Chemistry, Biochemistry and Environmental protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 3, 21 000 Novi Sad, Vojvodina, Serbia
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Lesjak M, Beara I, Simin N, Pintać D, Majkić T, Bekvalac K, Orčić D, Mimica-Dukić N. Antioxidant and anti-inflammatory activities of quercetin and its derivatives. J Funct Foods 2018. [DOI: 10.1016/j.jff.2017.10.047] [Citation(s) in RCA: 353] [Impact Index Per Article: 58.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
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Lesjak M, Beara I, Orčić D, Anačkov G, Knežević P, Mrkonjić Z, Mimica–Dukić N. Bioactivity and chemical profiling of the Juniperus excelsa, which support its usage as a food preservative and nutraceutical. International Journal of Food Properties 2017. [DOI: 10.1080/10942912.2017.1352598] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Marija Lesjak
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Ivana Beara
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Dejan Orčić
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Goran Anačkov
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Petar Knežević
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Zorica Mrkonjić
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Neda Mimica–Dukić
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
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Harmati M, Gyukity-Sebestyen E, Dobra G, Terhes G, Urban E, Decsi G, Mimica-Dukić N, Lesjak M, Simin N, Pap B, Nemeth IB, Buzas K. Binary mixture of Satureja hortensis and Origanum vulgare subsp. hirtum essential oils: in vivo therapeutic efficiency against Helicobacter pylori infection. Helicobacter 2017; 22. [PMID: 27578489 DOI: 10.1111/hel.12350] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND Helicobacter pylori can cause many gastrointestinal and also extra-gastrointestinal disorders and is a major risk factor for gastric carcinoma and MALT lymphoma. Currently, numerous antibiotic-based therapies are available; however, these therapies have numerous drawbacks, mainly due to increasing prevalence of antibiotic resistant strains. Thus, there is an urgent need to develop novel therapeutic agents against H. pylori infections. MATERIALS AND METHODS In this study, the anti-H. pylori activity of 2:1 mixture of Satureja hortensis and Origanum vulgare subsp. hirtum essential oils (2MIX) was investigated in vivo. After screening in vitro cytotoxicity of 2MIX on mammalian cell lines, the therapeutic efficiency was studied in a mouse model, where changes in H. pylori colonization were detected by PCR and histology of gastric samples. The immune reaction of mice was tested based on cytokine and chemokine production, and the in vivo toxicity of 2MIX was also investigated by measuring ALT and AST enzyme activities and Cyp3a11 and HO-1 mRNA levels in livers of mice. RESULTS 2MIX had not shown in vitro cytotoxicity against cell lines, only the highest concentration caused significant decrease in their survival rates. In the in vivo experiments, 2MIX successfully eradicated the pathogen in 70% of the mice. We could not detect toxicity or altered cytokine and chemokine balance after in vivo treatments in mice. CONCLUSIONS These results show that 2MIX is effective in reducing H. pylori colonization suggesting that this essential oil mixture has great potential as a new, effective, and safe therapeutic agent against H. pylori.
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Affiliation(s)
- Maria Harmati
- Laboratory of Microscopic Image Analysis and Machine Learning, Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Edina Gyukity-Sebestyen
- Laboratory of Microscopic Image Analysis and Machine Learning, Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Gabriella Dobra
- Laboratory of Microscopic Image Analysis and Machine Learning, Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Gabriella Terhes
- Institute of Clinical Microbiology, Albert Szent-Györgyi Medical and Pharmaceutical Center, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Edit Urban
- Institute of Clinical Microbiology, Albert Szent-Györgyi Medical and Pharmaceutical Center, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Gabor Decsi
- Department of Oral Biology and Experimental Dental Research, Faculty of Dentistry, University of Szeged, Szeged, Hungary
| | - Neda Mimica-Dukić
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Marija Lesjak
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Nataša Simin
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Bernadett Pap
- Laboratory of Microbial Genomics, Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Istvan B Nemeth
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - Krisztina Buzas
- Laboratory of Microscopic Image Analysis and Machine Learning, Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary.,Department of Oral Biology and Experimental Dental Research, Faculty of Dentistry, University of Szeged, Szeged, Hungary
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Lesjak M, Simin N, Orcic D, Franciskovic M, Knezevic P, Beara I, Aleksic V, Svircev E, Buzas K, Mimica-Dukic N. Binary and Tertiary Mixtures of Satureja hortensis
and Origanum vulgare
Essential Oils as Potent Antimicrobial Agents Against Helicobacter pylori. Phytother Res 2015; 30:476-84. [DOI: 10.1002/ptr.5552] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 11/26/2015] [Accepted: 11/26/2015] [Indexed: 01/04/2023]
Affiliation(s)
- Marija Lesjak
- Department of Chemistry, Biochemistry and Environmental Protection; Faculty of Sciences, University of Novi Sad; Trg Dositeja Obradovica 3 21000 Novi Sad Vojvodina Serbia
| | - Natasa Simin
- Department of Chemistry, Biochemistry and Environmental Protection; Faculty of Sciences, University of Novi Sad; Trg Dositeja Obradovica 3 21000 Novi Sad Vojvodina Serbia
| | - Dejan Orcic
- Department of Chemistry, Biochemistry and Environmental Protection; Faculty of Sciences, University of Novi Sad; Trg Dositeja Obradovica 3 21000 Novi Sad Vojvodina Serbia
| | - Marina Franciskovic
- Department of Chemistry, Biochemistry and Environmental Protection; Faculty of Sciences, University of Novi Sad; Trg Dositeja Obradovica 3 21000 Novi Sad Vojvodina Serbia
| | - Petar Knezevic
- Department of Biology and Ecology; Faculty of Sciences, University of Novi Sad; Trg Dositeja Obradovica 2 21000 Novi Sad Vojvodina Serbia
| | - Ivana Beara
- Department of Chemistry, Biochemistry and Environmental Protection; Faculty of Sciences, University of Novi Sad; Trg Dositeja Obradovica 3 21000 Novi Sad Vojvodina Serbia
| | - Verica Aleksic
- Department of Biology and Ecology; Faculty of Sciences, University of Novi Sad; Trg Dositeja Obradovica 2 21000 Novi Sad Vojvodina Serbia
| | - Emilija Svircev
- Department of Chemistry, Biochemistry and Environmental Protection; Faculty of Sciences, University of Novi Sad; Trg Dositeja Obradovica 3 21000 Novi Sad Vojvodina Serbia
| | - Krisztina Buzas
- Tumorimmunology and Pharmacology Research Group; Institute of Biochemistry, Biological Research Centre; Temesvari krt. 62 H-6726 Szeged Hungary
- Faculty of Dentistry; University of Szeged; Tisza Lajos krt. 64. H-6720 Szeged Hungary
| | - Neda Mimica-Dukic
- Department of Chemistry, Biochemistry and Environmental Protection; Faculty of Sciences, University of Novi Sad; Trg Dositeja Obradovica 3 21000 Novi Sad Vojvodina Serbia
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Lesjak M, Hoque R, Balesaria S, Skinner V, Debnam ES, Srai SKS, Sharp PA. Quercetin inhibits intestinal iron absorption and ferroportin transporter expression in vivo and in vitro. PLoS One 2014; 9:e102900. [PMID: 25058155 PMCID: PMC4109952 DOI: 10.1371/journal.pone.0102900] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 06/25/2014] [Indexed: 01/02/2023] Open
Abstract
Balancing systemic iron levels within narrow limits is critical for maintaining human health. There are no known pathways to eliminate excess iron from the body and therefore iron homeostasis is maintained by modifying dietary absorption so that it matches daily obligatory losses. Several dietary factors can modify iron absorption. Polyphenols are plentiful in human diet and many compounds, including quercetin--the most abundant dietary polyphenol--are potent iron chelators. The aim of this study was to investigate the acute and longer-term effects of quercetin on intestinal iron metabolism. Acute exposure of rat duodenal mucosa to quercetin increased apical iron uptake but decreased subsequent basolateral iron efflux into the circulation. Quercetin binds iron between its 3-hydroxyl and 4-carbonyl groups and methylation of the 3-hydroxyl group negated both the increase in apical uptake and the inhibition of basolateral iron release, suggesting that the acute effects of quercetin on iron transport were due to iron chelation. In longer-term studies, rats were administered quercetin by a single gavage and iron transporter expression measured 18 h later. Duodenal FPN expression was decreased in quercetin-treated rats. This effect was recapitulated in Caco-2 cells exposed to quercetin for 18 h. Reporter assays in Caco-2 cells indicated that repression of FPN by quercetin was not a transcriptional event but might be mediated by miRNA interaction with the FPN 3'UTR. Our study highlights a novel mechanism for the regulation of iron bioavailability by dietary polyphenols. Potentially, diets rich in polyphenols might be beneficial for patients groups at risk of iron loading by limiting the rate of intestinal iron absorption.
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Affiliation(s)
- Marija Lesjak
- Research Department of Structural and Molecular Biology, Division of Biosciences, University College London, London, United Kingdom
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences University of Novi Sad, Novi Sad, Serbia
| | - Rukshana Hoque
- Diabetes & Nutritional Sciences Division, King's College London, London, United Kingdom
| | - Sara Balesaria
- Research Department of Structural and Molecular Biology, Division of Biosciences, University College London, London, United Kingdom
| | - Vernon Skinner
- Research Department of Structural and Molecular Biology, Division of Biosciences, University College London, London, United Kingdom
| | - Edward S. Debnam
- Research Department of Neuroscience, Physiology and Pharmacology, Division of Biosciences, University College London, Royal Free Campus, London, United Kingdom
| | - Surjit K. S. Srai
- Research Department of Structural and Molecular Biology, Division of Biosciences, University College London, London, United Kingdom
| | - Paul A. Sharp
- Diabetes & Nutritional Sciences Division, King's College London, London, United Kingdom
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Lesjak M, Boreland F, Lyle D, Sidford J, Flecknoe-Brown S, Fletcher J. Screening for abdominal aortic aneurysm: does it affect men’s quality of life? Aust J Prim Health 2012; 18:284-8. [DOI: 10.1071/py11131] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Accepted: 10/26/2011] [Indexed: 11/23/2022]
Abstract
A prospective study investigated the psychological wellbeing and quality of life of older rural men after a community-based screening for abdominal aortic aneurysm (AAA). Five hundred and sixteen men aged 65–74 years attended the screening program; 53 had an abnormal aorta detected. These and a subsample of men with a normal aorta were followed up 6 months post-screening. All men completed a pre-screening questionnaire including the Medical Outcomes Short Form 36v 2 (MOSF36) and Hospital Anxiety and Depression Scale (HADS). Six months after screening all 53 men with an abnormal and 130 with a normal aorta were sent a questionnaire including MOSF36 and HADS. Baseline and 6 month scores for both MOSF36 and HADS scores were compared between the two groups and within each group. Baseline scores for both MOSF36 and HADS were not significantly different between men who were subsequently diagnosed with an abnormal aorta and those with a normal aorta. After 6 months there was no difference in HADS scores but a significant increase in the MOSF36 dimension of general health. Those with a normal aorta reported better general health, social functioning andgreater freedom from bodily pain. AAA screening appears highly acceptable to men in the target age group and future research should focus on implementation, cost effectiveness and collateral benefits of AAA screening.
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Boreland F, Lesjak M, Lyle D. Evaluation of home lead remediation in an Australian mining community. Sci Total Environ 2009; 408:202-8. [PMID: 19853886 DOI: 10.1016/j.scitotenv.2009.10.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2009] [Revised: 09/28/2009] [Accepted: 10/02/2009] [Indexed: 05/03/2023]
Abstract
In 1994 a comprehensive program was established to reduce children's blood lead levels in Broken Hill, NSW, Australia. Home remediation (abatement of lead hazards in a child's home) was included as part of a case management strategy for children with blood lead levels >or=15 microg/dL. Children with blood lead levels >or=30 microg/dL were offered immediate home remediation. Children with blood lead levels of 15-29 microg/dL were allocated to 'immediate' or 'delayed' home remediation; a subset of these participated in a randomized controlled trial (RCT) to evaluate the effectiveness of home remediation for reducing blood lead levels. One hundred and seventeen children received home remediation. One hundred and thirteen returned for follow-up blood tests, 88 of whom participated in the RCT. On average children's blood lead levels decreased by 1.7 microg/dL (10%) in the 6 months after remediation and by 2.2 microg/dL (13%) in the 6-12 months after remediation. However, remediation did not significantly change the rate of decline in blood lead levels (P=0.609). There was no evidence of association between change in children's blood lead levels and changes in lead loading in their homes. The results are consistent with the published literature, which suggests that home remediation does not reduce children's exposure to lead sufficiently to cause a moderate or greater decrease in their blood lead level. In communities where lead is widely dispersed, the study suggests that it is important to assess potential sources and pathways by which children are exposed to lead when developing an intervention plan, and the need for multiple interventions to effectively reduce blood lead levels. The findings reinforce the ongoing need for rigorous epidemiological evaluation of lead management programs to improve the evidence base, and for effective primary prevention to avoid children being exposed to lead in the first place.
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Affiliation(s)
- F Boreland
- Broken Hill Centre for Remote Health Research - Joint Initiative of the University of Sydney and Greater Western Area Health Service, PO Box 457, Broken Hill 2880, Australia.
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Puech MC, McAnulty JM, Lesjak M, Shaw N, Heron L, Watson JM. A statewide outbreak of cryptosporidiosis in New South Wales associated with swimming at public pools. Epidemiol Infect 2001; 126:389-96. [PMID: 11467796 PMCID: PMC2869707 DOI: 10.1017/s0950268801005544] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
From December 1997 to April 1998, 1060 laboratory-confirmed cryptosporidiosis cases were reported in New South Wales, Australia. In a case-control study, compared with 200 controls, the 100 cases were younger (mean age 42 versus 71 years; P < 0.0001), more likely to report swimming at a public pool (59% versus 38%; adjusted OR and 95% CI = 27; 1.4-5.1) and swimming in a dam, river or lake (OR = 48; 1.1-20.3) but less likely to report drinking bottled water (OR = 0.4; 0.2-0.9). In subgroup analyses, in rural areas illness was associated mainly with contact with another person with diarrhoea, and in urban areas illness was associated with swimming in a public pool. Cryptosporidium oocysts were more commonly detected in pools to which at least two notified cases had swum (P = 004). Outbreaks of cryptosporidiosis can be prolonged, involve multiple pools and be difficult to control.
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Affiliation(s)
- M C Puech
- Department of Public Health and Community Medicine, Westmead Hospital, NSW, Australia
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Lesjak M, Hua M, Ward J. Cervical screening among immigrant Vietnamese women seen in general practice: current rates, predictors and potential recruitment strategies. Aust N Z J Public Health 1999; 23:168-73. [PMID: 10330732 DOI: 10.1111/j.1467-842x.1999.tb01229.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
OBJECTIVE To ascertain cervical screening rates among Vietnamese women attending Vietnamese-speaking general practitioners (GPs) in Sydney, their recall of opportunistic recruitment by these GPs and their preferences for strategies to encourage screening. METHOD Women born in Vietnam aged 18-69 years were recruited through the waiting room of their GP and completed questionnaires in either Vietnamese or Chinese before and after their consultation. RESULTS Of 355 women seen during the survey period, 170 were ineligible. Of those eligible, 118 women (64% response rate) completed waiting room questionnaires. Of 86 women 'at risk', 56 (65%) reported having a cervical smear within two years or due on that day; 26 (86%) of those 30 women overdue for screening reported visiting a GP at least twice in the past six months. After adjustment for age and education, women who were more acculturated or had resided in Australia for the most years remained significantly more likely to be screened (p = 0.027 and p = 0.037 respectively). In the follow-up questionnaire, returned by 49 women (52%) who agreed to receive it, recall of opportunistic advice from the GP was low. Female GPs, free screening and more information in Vietnamese were the three most popular recruitment strategies. CONCLUSION Study confirms low participation rates in cervical screening by Vietnamese women using self-report. Recent immigrants and the least acculturated are least likely to be screened. IMPLICATIONS A community-based strategy involving Vietnamese-speaking GPs shows promise, inviting behavioural evaluation.
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Affiliation(s)
- M Lesjak
- Needs Assessment & Health Outcomes Unit, Central Sydney Area Health Service, New South Wales
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Rissel C, Lesjak M, Ward J. Cardiovascular risk factors among Arabic-speaking patients attending Arabic-speaking general practitioners in Sydney, Australia: opportunities for intervention. Ethn Health 1998; 3:213-222. [PMID: 9798119 DOI: 10.1080/13557858.1998.9961863] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
BACKGROUND Australia has a high rate of cardiovascular disease mortality and also a significant proportion of migrants. Little is known about the morbidity experience or cardiovascular risk factors among the larger migrant groups, and this is especially true of the Arabic-speaking population. OBJECTIVES The objectives of the study were to identify the health profile of Arabic-speaking people in Sydney, Australia, to explore the relationship between level of acculturation and health indicators and to identify the morbidity profile of patients presenting to Arabic-speaking general practitioners (GPs). DESIGN Adult Arabic-speaking patients aged 18-70 years attending 20 Arabic-speaking GPs in Canterbury, Sydney, during the 2-week study period were asked to complete a self-administered questionnaire in Arabic or English while waiting to see the GP. Data on cardiovascular risk factors, level of acculturation and reasons for seeing the GP were collected. RESULTS Data were collected from 851 patients (62% response rate). Almost three-quarters (73%) of males and 36% of females were considered overweight or obese (body mass index > 25). Of concern, 37% of males and 28% of females were smokers. Females were significantly less likely to have been tested for diabetes (p < .05) or raised blood pressure (p < 0.05) compared with females in NSW. Respondents consumed less bread per day and more fruits than in NSW overall. Respiratory complaints (flu and colds) were the most frequently reported reasons for patient encounters. Except for the youngest age group, males gave more reasons for encounters than females. CONCLUSIONS Consecutive sampling of ethnic patients attending a GP who speaks their language holds promise as a method of needs assessment with migrant populations. Further, our results suggest that smoking and weight reduction programs are priorities in the Arabic-speaking community. These risk factors are ideal for intervention by GPs speaking the same language.
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Affiliation(s)
- C Rissel
- Needs Assessment & Health Outcomes Unit, Newtown, NSW, Australia
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Nguy T, Bell J, Lesjak M, Ward J. Pap smears and Vietnamese women: perceptions and misconceptions. Aust Fam Physician 1998; 27 Suppl 1:S55. [PMID: 9503738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Abstract
OBJECTIVE To determine recency and predictors of cervical screening among Arabic-speaking women in Sydney, Australia. METHOD A consecutive sample of Arabic-speaking women, attending 20 Arabic-speaking general practitioners, was asked to complete a self administered health risk questionnaire available in Arabic or English which included three questions about cervical screening knowledge and behaviour. RESULTS Of 756 eligible women, 526 (70%) returned completed questionnaires. Of these, 69 (13%) did not know what a cervical smear was. Sixteen per cent of overseas-born compared with 2% of Australian-born women at risk had not heard of a cervical smear. Women were defined as being at risk of cervical cancer if they had both been married and not had a hysterectomy. Of 318 women at risk for cervical cancer who knew what a cervical smear was, 66% had had a smear in the last two years, a further 7% were attending for one that day while 11% had not had a smear for at least two years, 9% had never had one and 7% did not answer/could not remember. Religion, age, and residence in Australia for more than 10 years were significant and independent predictors of screening after adjustment for other variables in simultaneous logistic regression model (P = 0.002, P = 0.002, and P = 0.040 respectively). Muslim women and older women were more likely to be underscreened, and women with more than 10 years' residence in Australia were more likely to have been screened in the last two years. Acculturation, smoking status, health status, duration of relationship with participating doctor, and chronic disease were not significant predictors of a recent smear. CONCLUSION As only 73% of women at risk had been screened in the last two years, including women attending on the day and 9% had never been screened, Arabic-speaking women should be a priority for public campaigns, particularly Muslim and older women. Studies to evaluate the effectiveness and acceptability of reminders by ethnic general practitioners are recommended.
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Affiliation(s)
- M Lesjak
- Canterbury Division of General Practice, Newtown, Australia
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Baumann U, Huber R, Bode W, Grosse D, Lesjak M, Laurell CB. Crystal structure of cleaved human alpha 1-antichymotrypsin at 2.7 A resolution and its comparison with other serpins. J Mol Biol 1991; 218:595-606. [PMID: 2016749 DOI: 10.1016/0022-2836(91)90704-a] [Citation(s) in RCA: 149] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The crystal structure of proteolytically modified human alpha 1-antichymotrypsin (ACT), a member of the serpin superfamily, has been solved by Paterson search techniques and refined to an R-factor of 18.0% at 2.7 A resolution with mean deviations from standard bond lengths and angles of 0.013 A and 3.1 degrees, respectively. The final model consists of 374 amino acid residues, 126 solvent molecules and five sugar residues. Asn70 could be identified unambiguously as a glycosylation site and Asn104 is probably also glycosylated. The structure of cleaved ACT is compared with cleaved alpha 1-antitrypsin (alpha 1 PI) and with plakalbumin, which are prototypical models for cleaved and intact serpins, respectively. Cleaved ACT is very similar to cleaved alpha 1 PI; in particular, it has strand s4A, which is liberated by proteolysis, inserted as the middle strand in beta-sheet A. ACT and alpha 1 PI differ locally only at sites of insertions, except at the segment s3C-turn-s4C, which is displaced by several angström units. This region of ACT is involved in DNA binding.
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Affiliation(s)
- U Baumann
- Max-Planck-Institut für Biochemie, Martinsried, Germany
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von Bülow V, Lesjak M. [Modified ELISA for the detection of antiviral antibodies in chicken sera including the use of virus-free cellular antigens for specificity control]. Zentralbl Veterinarmed B 1987; 34:655-69. [PMID: 3439395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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