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Lewis AJ, Richards AC, Mendez AA, Dhakal BK, Jones TA, Sundsbak JL, Eto DS, Rousek AA, Mulvey MA. Plant phenolics inhibit focal adhesion kinase and suppress host cell invasion by uropathogenic Escherichia coli. Infect Immun 2024; 92:e0008024. [PMID: 38534100 PMCID: PMC11075462 DOI: 10.1128/iai.00080-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Accepted: 03/05/2024] [Indexed: 03/28/2024] Open
Abstract
Traditional folk treatments for the prevention and management of urinary tract infections (UTIs) and other infectious diseases often include plants and plant extracts that are rich in phenolic compounds. These have been ascribed a variety of activities, including inhibition of bacterial interactions with host cells. Here, we tested a panel of four well-studied phenolic compounds-caffeic acid phenethyl ester (CAPE), resveratrol, catechin, and epigallocatechin gallate-for the effects on host cell adherence and invasion by uropathogenic Escherichia coli (UPEC). These bacteria, which are the leading cause of UTIs, can bind and subsequently invade bladder epithelial cells via an actin-dependent process. Intracellular UPEC reservoirs within the bladder are often protected from antibiotics and host defenses and likely contribute to the development of chronic and recurrent infections. In cell culture-based assays, only resveratrol had a notable negative effect on UPEC adherence to bladder cells. However, both CAPE and resveratrol significantly inhibited UPEC entry into the host cells, coordinate with attenuated phosphorylation of the host actin regulator Focal Adhesion Kinase (FAK or PTK2) and marked increases in the numbers of focal adhesion structures. We further show that the intravesical delivery of resveratrol inhibits UPEC infiltration of the bladder mucosa in a murine UTI model and that resveratrol and CAPE can disrupt the ability of other invasive pathogens to enter host cells. Together, these results highlight the therapeutic potential of molecules like CAPE and resveratrol, which could be used to augment antibiotic treatments by restricting pathogen access to protective intracellular niches.IMPORTANCEUrinary tract infections (UTIs) are exceptionally common and increasingly difficult to treat due to the ongoing rise and spread of antibiotic-resistant pathogens. Furthermore, the primary cause of UTIs, uropathogenic Escherichia coli (UPEC), can avoid antibiotic exposure and many host defenses by invading the epithelial cells that line the bladder surface. Here, we identified two plant-derived phenolic compounds that disrupt activation of the host machinery needed for UPEC entry into bladder cells. One of these compounds, resveratrol, effectively inhibited UPEC invasion of the bladder mucosa in a mouse UTI model, and both phenolic compounds significantly reduced host cell entry by other invasive pathogens. These findings suggest that select phenolic compounds could be used to supplement existing antibacterial therapeutics by denying uropathogens shelter within host cells and tissues and help explain some of the benefits attributed to traditional plant-based medicines.
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Affiliation(s)
- Adam J. Lewis
- Division of Microbiology and Immunology, Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Amanda C. Richards
- Division of Microbiology and Immunology, Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Alejandra A. Mendez
- Division of Microbiology and Immunology, Department of Pathology, University of Utah, Salt Lake City, Utah, USA
- School of Biological Sciences, University of Utah, Salt Lake City, Utah, USA
- Henry Eyring Center for Cell & Genome Science, University of Utah, Salt Lake City, Utah, USA
| | - Bijaya K. Dhakal
- Division of Microbiology and Immunology, Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Tiffani A. Jones
- Division of Microbiology and Immunology, Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Jamie L. Sundsbak
- Division of Microbiology and Immunology, Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Danelle S. Eto
- Division of Microbiology and Immunology, Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Alexis A. Rousek
- School of Biological Sciences, University of Utah, Salt Lake City, Utah, USA
- Henry Eyring Center for Cell & Genome Science, University of Utah, Salt Lake City, Utah, USA
| | - Matthew A. Mulvey
- Division of Microbiology and Immunology, Department of Pathology, University of Utah, Salt Lake City, Utah, USA
- School of Biological Sciences, University of Utah, Salt Lake City, Utah, USA
- Henry Eyring Center for Cell & Genome Science, University of Utah, Salt Lake City, Utah, USA
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Lewis AJ, Richards AC, Mendez AA, Dhakal BK, Jones TA, Sundsbak JL, Eto DS, Mulvey MA. Plant Phenolics Inhibit Focal Adhesion Kinase and Suppress Host Cell Invasion by Uropathogenic Escherichia coli. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.23.568486. [PMID: 38045282 PMCID: PMC10690256 DOI: 10.1101/2023.11.23.568486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
Traditional folk treatments for the prevention and management of urinary tract infections (UTIs) and other infectious diseases often include plants and plant extracts that are rich in phenolic and polyphenolic compounds. These have been ascribed a variety of activities, including inhibition of bacterial interactions with host cells. Here we tested a panel of four well-studied phenolic compounds - caffeic acid phenethyl ester (CAPE), resveratrol, catechin, and epigallocatechin gallate - for effects on host cell adherence and invasion by uropathogenic Escherichia coli (UPEC). These bacteria, which are the leading cause of UTIs, can bind and subsequently invade bladder epithelial cells via an actin-dependent process. Intracellular UPEC reservoirs within the bladder are often protected from antibiotics and host defenses, and likely contribute to the development of chronic and recurrent infections. Using cell culture-based assays, we found that only resveratrol had a notable negative effect on UPEC adherence to bladder cells. However, both CAPE and resveratrol significantly inhibited UPEC entry into the host cells, coordinate with attenuated phosphorylation of the host actin regulator Focal Adhesion Kinase (FAK, or PTK2) and marked increases in the numbers of focal adhesion structures. We further show that the intravesical delivery of resveratrol inhibits UPEC infiltration of the bladder mucosa in a murine UTI model, and that resveratrol and CAPE can disrupt the ability of other invasive pathogens to enter host cells. Together, these results highlight the therapeutic potential of molecules like CAPE and resveratrol, which could be used to augment antibiotic treatments by restricting pathogen access to protective intracellular niches.
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Affiliation(s)
- Adam J. Lewis
- Division of Microbiology and Immunology, Department of Pathology, University of Utah, Salt Lake City, UT 84112, USA
| | - Amanda C. Richards
- Division of Microbiology and Immunology, Department of Pathology, University of Utah, Salt Lake City, UT 84112, USA
- School of Biological Sciences, 257 S 1400 E, University of Utah, Salt Lake City, UT 84112, USA; Henry Eyring Center for Cell & Genome Science, 1390 Presidents Circle, University of Utah, Salt Lake City, UT 84112, USA
| | - Alejandra A. Mendez
- Division of Microbiology and Immunology, Department of Pathology, University of Utah, Salt Lake City, UT 84112, USA
- School of Biological Sciences, 257 S 1400 E, University of Utah, Salt Lake City, UT 84112, USA; Henry Eyring Center for Cell & Genome Science, 1390 Presidents Circle, University of Utah, Salt Lake City, UT 84112, USA
| | - Bijaya K. Dhakal
- Division of Microbiology and Immunology, Department of Pathology, University of Utah, Salt Lake City, UT 84112, USA
| | - Tiffani A. Jones
- Division of Microbiology and Immunology, Department of Pathology, University of Utah, Salt Lake City, UT 84112, USA
| | - Jamie L. Sundsbak
- Division of Microbiology and Immunology, Department of Pathology, University of Utah, Salt Lake City, UT 84112, USA
| | - Danelle S. Eto
- Division of Microbiology and Immunology, Department of Pathology, University of Utah, Salt Lake City, UT 84112, USA
| | - Matthew A. Mulvey
- Division of Microbiology and Immunology, Department of Pathology, University of Utah, Salt Lake City, UT 84112, USA
- School of Biological Sciences, 257 S 1400 E, University of Utah, Salt Lake City, UT 84112, USA; Henry Eyring Center for Cell & Genome Science, 1390 Presidents Circle, University of Utah, Salt Lake City, UT 84112, USA
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Natural Polyphenols for Prevention and Treatment of Urinary Tract Infections. Int J Mol Sci 2023; 24:ijms24043277. [PMID: 36834683 PMCID: PMC9966151 DOI: 10.3390/ijms24043277] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/30/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
Urinary tract infections (UTIs) are the second most common type of bacterial infection worldwide. UTIs are gender-specific diseases, with a higher incidence in women. This type of infection could occur in the upper part of the urogenital tract, leading to pyelonephritis and kidney infections, or in the lower part of the urinary tract, leading to less serious pathologies, mainly cystitis and urethritis. The most common etiological agent is uropathogenic E. coli (UPEC), followed by Pseudomonas aeruginosa and Proteus mirabilis. Conventional therapeutic treatment involves the use of antimicrobial agents, but due to the dramatic increase in antimicrobial resistance (AMR), this strategy has partially lost its therapeutic efficacy. For this reason, the search for natural alternatives for UTI treatment represents a current research topic. Therefore, this review summarized the results of in vitro and animal- or human-based in vivo studies aimed to assess the potential therapeutic anti-UTI effects of natural polyphenol-based nutraceuticals and foods. In particular, the main in vitro studies were reported, describing the principal molecular therapeutic targets and the mechanism of action of the different polyphenols studied. Furthermore, the results of the most relevant clinical trials for the treatment of urinary tract health were described. Future research is needed to confirm and validate the potential of polyphenols in the clinical prophylaxis of UTIs.
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Aghahowa S, Ozolua R, Bafor E, Obarisiagbon P, Isah A. Toxicological effect of Artemisinin-Based Combination Therapies plus Paracetamol in malaria patients. Toxicol Rep 2021; 8:1930-1936. [PMID: 34926171 PMCID: PMC8649067 DOI: 10.1016/j.toxrep.2021.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 10/27/2021] [Accepted: 11/04/2021] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Following the paucity of safety reports in the use of Artemisinin-Based Combination Therapies (ACTs) plus paracetamol, the study assessed safety potential of artemether-lumefantrine (ALP), artesunate-amodiaquine (AAP), artesunate-mefloquine (AMP), artesunate-sulphadoxine-pyrimethamine (ASPP) and dihydroartemisinin-piperaquine (DHPP) combination with paracetamol in malaria patients. METHODS ACTs and paracetamol were administered concomitantly in conventional doses/regimen to randomly selected patients. Blood samples were collected from the ante-cubital vein before and after completion of therapies. Toxicity markers such as weights, glucose, lipids, renal electrolytes, liver enzymes and haematological indices were assessed using standard protocols. RESULTS The total numbers of participants were 57 patients. Male to female ratio was 1:1.1. Mean body weight and ages were 59.19 ± 1.39 kg and 42.86 ± 1.32 years respectively. The mean temperatures prior to and after therapy were 37.49 ± 1.02 °C and 37.50 ± 0.17 °C respectively. Mean parasitaemia before the commencement of therapy was 6282 ± 21.01 parasites/μl. Out of thirty-seven toxicological indices evaluated, twenty-four were significantly altered by ACTs plus paracetamol (P < 0.05). Increased serum toxicity markers due to the drug combinations were glucose (AAP, AMP), urea (ALP, ASPP), bicarbonate ion (ALP, AAP, AMP, ASPP), chloride ion (ALP, AAP, AMP), creatinine (ALP, AAP, AMP, ASPP), alkaline phosphatase (ALP, AAP), aspartate aminotransferase and alanine aminotransferase (ALP, AAP, AMP, ASPP, DHPP), total protein (AMP, DHPP) and albumin (AMP, DHPP). Decreased serum toxicity markers due to the drugs were glucose (ALP, ASPP, DHPP), urea (AMP), bicarbonate ion (DHPP), chloride ion (ASPP, DHPP), creatinine (DHPP), alkaline phosphatase (AMP, ASPP, DHPP), total protein (ALP, AAP, and ASPP) and albumin (ALP, AAP, ASPP). Altered haematological indices were white blood cells, red blood cells, mean cell haemoglobin and platelets. CONCLUSION Since ACTs plus paracetamol altered human system, discrete selection is essential in managing uncomplicated malaria most especially in patients with co-morbid conditions.
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Affiliation(s)
- S.E. Aghahowa
- Department of Pharmacology and Toxicology, University of Benin, Benin City, Nigeria
| | - R.I. Ozolua
- Department of Pharmacology and Toxicology, University of Benin, Benin City, Nigeria
| | - E.E. Bafor
- Department of Pharmacology and Toxicology, University of Benin, Benin City, Nigeria
| | - P. Obarisiagbon
- Department of Pharmacology and Toxicology, University of Benin, Benin City, Nigeria
| | - A.O. Isah
- College of Medicine, University of Benin, Benin City, Nigeria
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Herb-drug interaction: The effect of Polygonum capitatum extract on pharmacokinetics of levofloxacin in rats. J Pharm Biomed Anal 2020; 195:113832. [PMID: 33349475 DOI: 10.1016/j.jpba.2020.113832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 11/17/2020] [Accepted: 12/04/2020] [Indexed: 10/22/2022]
Abstract
Polygonum capitatum is a traditional medicinal plant of the Miao people and has been used to treat a variety of urological disorders in China for many years. Preparations made from water-soluble P. capitatum extracts, Relinqing® granules, are often used in combination with levofloxacin to treat urinary tract infections, and have demonstrated better clinical efficacy than either drug alone. As there is no information on the pharmacokinetics of both drugs after co-administration, a sensitive and reliable ultra-performance liquid chromatography-tandem mass spectrometry method was developed and validated to study the potential herb-drug interactions between P. capitatum and levofloxacin. This analytical method delivered high levels of specificity, recovery, accuracy, precision and preserved sample stability. When applied to study pharmacokinetic interactions after oral co-administration of P. capitatum extract (1.86 g kg-1) and levofloxacin (42 mg kg-1) in rats, the results indicated significant reductions in Cmax and AUC0-24h of levofloxacin, and significant increases in MRT, Tmax, CLz/F and Vz/F. Moreover, pretreatment with P. capitatum extract orally did not alter the intravenous pharmacokinetics of levofloxacin. Combined and compared oral pharmacokinetic parameters, suggesting that the interacting targets might localized in the intestine during absorption. Overall, the results revealed a potential herb-drug interaction between P. capitatum and levofloxacin.
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Yepes-Calderón M, Sotomayor CG, Gans ROB, Berger SP, Leuvenink HGD, Tsikas D, Rodrigo R, Navis GJ, Bakker SJL. Post-transplantation plasma malondialdehyde is associated with cardiovascular mortality in renal transplant recipients: a prospective cohort study. Nephrol Dial Transplant 2020; 35:512-519. [PMID: 32133530 PMCID: PMC7056950 DOI: 10.1093/ndt/gfz288] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Accepted: 12/03/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND In renal transplant recipients (RTRs), cardiovascular mortality is the most common cause of long-term renal graft loss. Oxidative stress (OS) has been associated with cardiovascular disease and is known to be enhanced in RTRs. We aimed to prospectively investigate whether the concentration of the OS biomarker malondialdehyde (MDA) is associated with long-term risk of cardiovascular mortality in a large cohort of RTRs. METHODS The plasma MDA concentration was measured using the thiobarbituric acid reaction assay in 604 extensively phenotyped RTRs with a functioning allograft for ≥1 year. The association between MDA and cardiovascular mortality was assessed using Cox proportional hazard regression analyses in the overall cohort and within subgroups according to significant effect modifiers. RESULTS Median circulating MDA concentration at baseline was 5.38 [interquartile range (IQR) 4.31-6.45] μmol/L. During a follow-up period of 6.4 (IQR 5.6-6.8) years, 110 (18%) RTRs died, with 40% of deaths due to cardiovascular causes. MDA concentration was significantly associated with the risk for cardiovascular mortality {hazard ratio [HR] 1.31 [95% confidence interval (CI) 1.03-1.67] per 1-SD increment}, independent of adjustment for potential confounders, including renal function, immunosuppressive therapy, smoking status and blood pressure. The association between MDA concentration and the risk for cardiovascular mortality was stronger in RTRs with relatively lower plasma ascorbic acid concentrations [≤42.5 µmol/L; HR 1.79 (95% CI 1.30-2.48) per 1-SD increment] or relatively lower estimated glomerular filtration rates [≤45 mL/min/1.73 m2; HR 2.09 (95% CI 1.45-3.00) per 1-SD increment]. CONCLUSIONS Circulating MDA concentration is independently associated with long-term risk for cardiovascular mortality, particularly in RTRs with relatively lower ascorbic acid concentrations or renal function. Further studies are warranted to elucidate whether OS-targeted interventions could decrease cardiovascular mortality in RTRs.
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Affiliation(s)
- Manuela Yepes-Calderón
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Camilo G Sotomayor
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Rijk O B Gans
- Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Stefan P Berger
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Henri G D Leuvenink
- Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Dimitrios Tsikas
- Institute of Toxicology, Core Unit Proteomics, Hannover Medical School, Hannover, Germany
| | - Ramón Rodrigo
- Molecular and Clinical Pharmacology Program, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Gerjan J Navis
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Stephan J L Bakker
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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Kızıldağ A, Arabacı T, Albayrak M, Balseven HM, Aksu Kızıldağ C, Tasdemir U. A biochemical and immunohistochemical study of the effects of caffeic acid phenethyl ester on alveolar bone loss and oxidative stress in diabetic rats with experimental periodontitis. Biotech Histochem 2020; 95:456-463. [PMID: 32013634 DOI: 10.1080/10520295.2020.1718756] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Caffeic acid phenethyl ester (CAPE) is used as a therapeutic agent to prevent bone loss. We determined the effects of systemically administered CAPE on alveolar bone loss and oxidative stress in diabetic rats with experimental periodontitis. Forty male rats were divided into four equal groups: control, experimental periodontitis (EP), EP-diabetes mellitus (EP-DM) and EP-DM-CAPE. DM was induced by streptozotocin, then lipopolysaccharide was injected to induce periodontitis. CAPE was administered to the EP-DM-CAPE group daily for 15 days. Then, serum samples were taken and the rats were sacrificed for histological analyses. Serum interleukin (IL-1β) and oxidative stress also were evaluated. Alveolar bone loss was assessed histomorphometrically. Alveolar bone loss and IL-1β levels were significantly less in the EP-DM-CAPE and EP groups compared to the EP-DM group. Oxidative stress was significantly less in the EP-DM-CAPE group compared to the EP and EP-DM groups. Receptor activator of nuclear factor kappa-B ligand (RANKL) levels were significantly higher in the EP-DM group compared to the disease groups. CAPE significantly reduced RANKL levels in the EP-DM-CAPE group compared to the EP-DM group. We found that CAPE treatment significantly inhibited DM induced oxidative stress and RANKL induced osteoclastogenesis and alveolar bone loss in diabetic rats with periodontitis.
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Affiliation(s)
- Alper Kızıldağ
- Department of Periodontology, Faculty of Dentistry, Pamukkale University , Denizli, Turkey
| | - Taner Arabacı
- Department of Periodontology, Faculty of Dentistry, Atatürk University , Erzurum, Turkey
| | - Mevlüt Albayrak
- Medical Laboratory Department, Health Services Vocational Training School, Ataturk University , Erzurum, Turkey
| | - Havva Müge Balseven
- Department of Periodontology, Faculty of Dentistry, Pamukkale University , Denizli, Turkey
| | - Canan Aksu Kızıldağ
- Department of Orthodontics, Faculty of Dentistry, Pamukkale University , Denizli, Turkey
| | - Ufuk Tasdemir
- Department of Maxillofacial Surgery, Faculty of Dentistry, Pamukkale University , Denizli, Turkey
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Huang Y, Zhou Z, Yang W, Gong Z, Li Y, Chen S, Wang Y, Wang A, Lan Y, Liu T, Zheng L. Comparative Pharmacokinetics of Gallic Acid, Protocatechuic Acid, and Quercitrin in Normal and Pyelonephritis Rats after Oral Administration of a Polygonum capitatum Extract. Molecules 2019; 24:molecules24213873. [PMID: 31717895 PMCID: PMC6864662 DOI: 10.3390/molecules24213873] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 09/28/2019] [Accepted: 10/24/2019] [Indexed: 12/04/2022] Open
Abstract
Polygonum capitatum Buch.-Ham. ex D. Don is traditionally used by Hmong for the treatment of urinary tract infections and pyelonephritis. Information regarding the pharmacokinetic behavior of the extract in the condition of pyelonephritis is lacking. In the present study, we aimed to compare the pharmacokinetic properties of gallic acid (GA), protocatechuic acid (PCA), and quercitrin (QR)—the main bioactive constituents in the herb—in normal and pyelonephritis rats. The plasma samples were collected at various time points after administration of a single dose of Polygonum capitatum extract. The plasma level of GA, PCA, and QR at the designed time points was determined by ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) and drug concentration versus time plots were constructed to estimate the pharmacokinetic parameters. The AUC(0-t), AUC(0-∞), MRT(0-t), and CL of GA, PCA, and QR in pyelonephritis rats was significantly different from those of the normal rats. The results indicated that the three constituents have higher rate of uptake and slower rate of elimination in the rats with pyelonephritis, suggesting altered rate and extent of drug metabolism.
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Affiliation(s)
- Yong Huang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, 4 Beijing Road, Guiyang 550004, China; (Y.H.); (Z.Z.); (W.Y.); (Z.G.); (Y.L.); (S.C.); (Y.W.)
| | - Zuying Zhou
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, 4 Beijing Road, Guiyang 550004, China; (Y.H.); (Z.Z.); (W.Y.); (Z.G.); (Y.L.); (S.C.); (Y.W.)
- School of Pharmacy, Guizhou Medical University, 4 Beijing Road, Guiyang 550004, China
| | - Wu Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, 4 Beijing Road, Guiyang 550004, China; (Y.H.); (Z.Z.); (W.Y.); (Z.G.); (Y.L.); (S.C.); (Y.W.)
- School of Pharmacy, Guizhou Medical University, 4 Beijing Road, Guiyang 550004, China
| | - Zipeng Gong
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, 4 Beijing Road, Guiyang 550004, China; (Y.H.); (Z.Z.); (W.Y.); (Z.G.); (Y.L.); (S.C.); (Y.W.)
| | - Yueting Li
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, 4 Beijing Road, Guiyang 550004, China; (Y.H.); (Z.Z.); (W.Y.); (Z.G.); (Y.L.); (S.C.); (Y.W.)
| | - Siying Chen
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, 4 Beijing Road, Guiyang 550004, China; (Y.H.); (Z.Z.); (W.Y.); (Z.G.); (Y.L.); (S.C.); (Y.W.)
| | - Yonglin Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, 4 Beijing Road, Guiyang 550004, China; (Y.H.); (Z.Z.); (W.Y.); (Z.G.); (Y.L.); (S.C.); (Y.W.)
| | - Aimin Wang
- Engineering Research Center for the Development and Application of Ethnic Medicine and TCM, Ministry of Education, 4 Beijing Road, Guiyang 550004, China; (A.W.); (Y.L.)
| | - Yanyu Lan
- Engineering Research Center for the Development and Application of Ethnic Medicine and TCM, Ministry of Education, 4 Beijing Road, Guiyang 550004, China; (A.W.); (Y.L.)
| | - Ting Liu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, 4 Beijing Road, Guiyang 550004, China; (Y.H.); (Z.Z.); (W.Y.); (Z.G.); (Y.L.); (S.C.); (Y.W.)
- Correspondence: (T.L.); (L.Z.); Tel.: +86-851-86908468 (L.Z.)
| | - Lin Zheng
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, 4 Beijing Road, Guiyang 550004, China; (Y.H.); (Z.Z.); (W.Y.); (Z.G.); (Y.L.); (S.C.); (Y.W.)
- Correspondence: (T.L.); (L.Z.); Tel.: +86-851-86908468 (L.Z.)
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Sabetkish N, Sabetkish S, Mohseni MJ, Kajbafzadeh AM. Prevention of Renal Scarring in Acute Pyelonephritis by Probiotic Therapy: an Experimental Study. Probiotics Antimicrob Proteins 2019; 11:158-164. [PMID: 29204797 DOI: 10.1007/s12602-017-9363-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We evaluated the protective effects of probiotic administration as a prophylaxis treatment and immediately after fever onset in increasing the immune response and decreasing the renal scarring in a rat model of acute pyelonephritis. Twenty-four rats were apportioned to three groups. In GI (n = 8), the rats were injected with direct inoculation of Escherichia coli into the right kidney. In GII (n = 8), the rats received a probiotic regimen 1 month before E. coli injection and the probiotic regimen was continued for the next 2 months. In GIII (n = 8), the probiotic regimen was started just after E. coli injection and was continued for 2 months. Technetium-99m-DMSA renal scan, histopathological evaluations, concentrations of CA19-9, IgA, blood urea nitrogen (BUN), and creatinine were assessed 1 and 2 months post-injection. It took an average of 4.2 ± 1.1 h between the injection and onset of fever in GI and GII. In GIII, this period was longer (7.5 ± 1.4). Probiotic administration resulted in reduction of interstitial fibrosis and tubular and glomerular atrophy in GII in all follow-ups. Technetium-99m-DMSA renal scan showed that the right kidney reached near the normal cortical integrity (47%) in GII compared to GI (32%) after 2 months of injection. However, the renal integrity did not improve significantly in GIII (41%). In GII, CA19-9 was lower (p < 0.05), while the levels of serum and fecal IgA were higher (p < 0.05). Administration of the probiotic regimen in the rat model may decrease renal damage in pyelonephritis. In spite of better results in the prophylactic group compared to the treatment group, no strong evidence was found to prove the advantage of its prophylactic application over the treatment administration.
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Affiliation(s)
- Nastaran Sabetkish
- Pediatric Urology and Regenerative Medicine Research Center, Section of Tissue Engineering and Stem Cells Therapy, Children's Hospital Medical Center, Tehran University of Medical Sciences, No. 62, Dr. Qarib's Street, Keshavarz Boulevard, Tehran, 1419433151, Iran
| | - Shabnam Sabetkish
- Pediatric Urology and Regenerative Medicine Research Center, Section of Tissue Engineering and Stem Cells Therapy, Children's Hospital Medical Center, Tehran University of Medical Sciences, No. 62, Dr. Qarib's Street, Keshavarz Boulevard, Tehran, 1419433151, Iran
| | - Mohammad Javad Mohseni
- Pediatric Urology and Regenerative Medicine Research Center, Section of Tissue Engineering and Stem Cells Therapy, Children's Hospital Medical Center, Tehran University of Medical Sciences, No. 62, Dr. Qarib's Street, Keshavarz Boulevard, Tehran, 1419433151, Iran
| | - Abdol-Mohammad Kajbafzadeh
- Pediatric Urology and Regenerative Medicine Research Center, Section of Tissue Engineering and Stem Cells Therapy, Children's Hospital Medical Center, Tehran University of Medical Sciences, No. 62, Dr. Qarib's Street, Keshavarz Boulevard, Tehran, 1419433151, Iran.
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Kızıldağ A, Arabacı T, Albayrak M, Taşdemir U, Şenel E, Dalyanoglu M, Demirci E. Therapeutic effects of caffeic acid phenethyl ester on alveolar bone loss in rats with endotoxin-induced periodontitis. J Dent Sci 2019; 14:339-345. [PMID: 31890119 PMCID: PMC6921107 DOI: 10.1016/j.jds.2019.03.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 01/25/2019] [Indexed: 02/06/2023] Open
Abstract
Background/purpose Caffeic acid phenethyl ester (CAPE) is an antioxidant which is decreases the bone resorption and enhances the bone healing. The aim of this study was to investigate the effects of administering systemic CAPE on alveolar bone loss in rats with experimental periodontitis. Materials and methods Thirty male Sprague Dawley rats were divided into three groups: control, endotoxin-induced periodontitis (EP), and EP treated with CAPE (EP-CAPE). Endotoxin was injected into the gingiva of test rats on days 1, 3, and 5, whereas saline was injected into the control rats. The EP-CAPE group received 10 mmol/kg/day CAPE intraperitoneally for 28 consecutive days. Saline was given in the control and EP groups in the same manner. At the end of the study, intracardiac blood samples were obtained, and the rats were sacrificed. Alveolar bone loss was analyzed with histometric measurements. The oxidative stress index (OSI) was used to evaluate the oxidative stress. The receptor activator of the nuclear factor kappa B ligand (RANKL) level was analyzed stereologically. Results CAPE administration significantly decreased the serum OSI and interleukin-1β levels. Alveolar bone loss was statistically higher in the EP group compared with the EP-CAPE group (P < 0.05). Immunohistochemical analyses of the RANKL were significantly lower in the EP-CAPE group than in the EP group (P < 0.05). Conclusion This experimental study revealed that CAPE administration significantly prevented alveolar bone loss and stimulated periodontal tissue healing.
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Affiliation(s)
- Alper Kızıldağ
- Department of Periodontology, Faculty of Dentistry, Pamukkale University, Denizli, Turkey
| | - Taner Arabacı
- Department of Periodontology, Faculty of Dentistry, Atatürk University, Erzurum, Turkey
| | - Mevlüt Albayrak
- Medical Laboratory Department, Health Services Vocational Training School, Ataturk University, Erzurum, Turkey
| | - Ufuk Taşdemir
- Department of Maxillofacial Surgery, Faculty of Dentistry, Pamukkale University, Denizli, Turkey
| | - Erman Şenel
- Department of Maxillofacial Surgery, Faculty of Dentistry, Pamukkale University, Denizli, Turkey
| | - Mukaddes Dalyanoglu
- Department of Physiology, Medical School, Pamukkale University, Denizli, Turkey
| | - Elif Demirci
- Medical Biology Department, Medical School, Ataturk University, Erzurum, Turkey
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Bernal-Mercado AT, Vazquez-Armenta FJ, Tapia-Rodriguez MR, Islas-Osuna MA, Mata-Haro V, Gonzalez-Aguilar GA, Lopez-Zavala AA, Ayala-Zavala JF. Comparison of Single and Combined Use of Catechin, Protocatechuic, and Vanillic Acids as Antioxidant and Antibacterial Agents against Uropathogenic Escherichia Coli at Planktonic and Biofilm Levels. Molecules 2018; 23:molecules23112813. [PMID: 30380712 PMCID: PMC6278301 DOI: 10.3390/molecules23112813] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 10/22/2018] [Accepted: 10/26/2018] [Indexed: 12/01/2022] Open
Abstract
The objective of this study was to evaluate the effect of combining catechin, protocatechuic, and vanillic acids against planktonic growing, adhesion, and biofilm eradication of uropathogenic Escherichia coli (UPEC), as well as antioxidant agents. The minimum inhibitory concentrations (MIC) of protocatechuic, vanillic acids and catechin against the growth of planktonic bacteria were 12.98, 11.80, and 13.78 mM, respectively. Mixing 1.62 mM protocatechuic acid + 0.74 mM vanillic acid + 0.05 mM catechin resulted in a synergistic effect acting as an MIC. Similarly, the minimum concentrations of phenolic compounds to prevent UPEC adhesion and biofilm formation (MBIC) were 11.03 and 7.13 mM of protocatechuic and vanillic acids, respectively, whereas no MBIC of catechin was found. However, combinations of 1.62 mM protocatechuic acid + 0.74 mM vanillic acid + 0.05 mM catechin showed a synergistic effect acting as MBIC. On the other hand, the minimum concentrations to eradicate biofilms (MBEC) were 25.95 and 23.78 mM, respectively. The combination of 3.20 mM protocatechuic acid, 2.97 mM vanillic acid, and 1.72 mM catechin eradicated pre-formed biofilms. The antioxidant capacity of the combination of phenolics was higher than the expected theoretical values, indicating synergism by the DPPH•, ABTS, and FRAP assays. Effective concentrations of catechin, protocatechuic, and vanillic acids were reduced from 8 to 1378 times when combined. In contrast, the antibiotic nitrofurantoin was not effective in eradicating biofilms from silicone surfaces. In conclusion, the mixture of phenolic compounds was more effective in preventing cell adhesion and eradicating pre-formed biofilms of uropathogenic E. coli than single compounds and nitrofurantoin, and showed antioxidant synergy.
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Affiliation(s)
- Ariadna Thalia Bernal-Mercado
- Centro de Investigacion en Alimentacion y Desarrollo, AC, Carretera a la Victoria km. 0.6, Hermosillo 83000, Mexico.
| | | | - Melvin R Tapia-Rodriguez
- Centro de Investigacion en Alimentacion y Desarrollo, AC, Carretera a la Victoria km. 0.6, Hermosillo 83000, Mexico.
| | - Maria A Islas-Osuna
- Centro de Investigacion en Alimentacion y Desarrollo, AC, Carretera a la Victoria km. 0.6, Hermosillo 83000, Mexico.
| | - Veronica Mata-Haro
- Centro de Investigacion en Alimentacion y Desarrollo, AC, Carretera a la Victoria km. 0.6, Hermosillo 83000, Mexico.
| | - Gustavo A Gonzalez-Aguilar
- Centro de Investigacion en Alimentacion y Desarrollo, AC, Carretera a la Victoria km. 0.6, Hermosillo 83000, Mexico.
| | - Alonso A Lopez-Zavala
- Universidad de Sonora, Blvd. Luis Encinas y Rosales S/N, Col. Centro, Hermosillo, Sonora 83000, Mexico.
| | - Jesus Fernando Ayala-Zavala
- Centro de Investigacion en Alimentacion y Desarrollo, AC, Carretera a la Victoria km. 0.6, Hermosillo 83000, Mexico.
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12
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Yangi B, Cengiz Ustuner M, Dincer M, Ozbayer C, Tekin N, Ustuner D, Colak E, Kolac UK, Entok E. Propolis Protects Endotoxin Induced Acute Lung and Liver Inflammation Through Attenuating Inflammatory Responses and Oxidative Stress. J Med Food 2018; 21:1096-1105. [PMID: 29719160 DOI: 10.1089/jmf.2017.0151] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Propolis is a natural bee product, and it has many effects, including antioxidant, anti-inflammatory, antihepatotoxic, and anticancer activity. In this study, we aimed to explore the potential in vivo anti-inflammatory, antioxidant, and antiapoptotic properties of propolis extract on lipopolysaccharide (LPS)-induced inflammation in rats. Forty-two, 3- to 4-month-old male Sprague Dawley rats were used in six groups. LPS (1 mg/kg) was administered intraperitoneally to rats in inflammation, inflammation + propolis30, and inflammation+propolis90 groups. Thirty milligram/kilogram and 90 mg/kg of propolis were given orally 24 h after LPS injection. After the determination of the inflammation in lung and liver tissues by 18F-fluoro-deoxy-d-glucose-positron emission tomography (18FDG-PET), samples were collected. The levels of malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), nitric oxide (NO), and DNA fragmentation were determined. The decrease of MDA levels in inflammation + propolis30 and inflammation + propolis90 groups was determined compared to the inflammation group in lung and liver tissues. The increase of SOD% inhibition in inflammation + propolis90 group was determined in liver, lung, and hemolysate compared to the inflammation group. Increased CAT activities in inflammation + propolis30 and inflammation + propolis90 groups were observed in liver tissue and hemolysate compared to inflammation group. In lung tissue, NO levels were lower in inflammation group compared to the control group, but DNA fragmentation levels were higher. 18F-FDG uptake of tissues in inflammation + propolis30 and inflammation + propolis90 groups was decreased compared to the inflammation group. In conclusion, the data of this study indicate that the propolis application may serve as a potential approach for treating inflammatory diseases through the effect of reducing inflammation and free oxygen radical production.
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Affiliation(s)
- Berat Yangi
- 1 Department of Medical Biology, Eskisehir Osmangazi University , Eskisehir, Turkey
| | | | - Murat Dincer
- 2 Department of Medical Oncology, Faculty of Medicine, Eskisehir Osmangazi University , Eskisehir, Turkey
| | - Cansu Ozbayer
- 3 Department of Midwifery, School of Health Science, Dumlupınar University , Kutahya, Turkey
| | - Neslihan Tekin
- 4 Department of Biotechnology and Molecular Biology, Aksaray University , Aksaray, Turkey
| | - Derya Ustuner
- 5 Department of Medical Laboratory, Vocational School of Health Services, Eskisehir Osmangazi University , Eskisehir, Turkey
| | - Emine Colak
- 1 Department of Medical Biology, Eskisehir Osmangazi University , Eskisehir, Turkey
| | - Umut Kerem Kolac
- 1 Department of Medical Biology, Eskisehir Osmangazi University , Eskisehir, Turkey
| | - Emre Entok
- 6 Department of Nuclear Medicine, Faculty of Medicine, Eskisehir Osmangazi University , Eskisehir, Turkey
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13
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Evaluation of the effects of Iranian propolis on the severity of post operational-induced peritoneal adhesion in rats. Biomed Pharmacother 2018; 99:346-353. [DOI: 10.1016/j.biopha.2018.01.068] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 01/06/2018] [Accepted: 01/11/2018] [Indexed: 12/29/2022] Open
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Soleimani G, Sadeghi-Bojd S, Teimouri A, Nakhaee A, Sheikhhosseini A. Evaluation of oxidant-antioxidant balance and total antioxidant capacity of serum in children with urinary tract infection. Niger Med J 2016; 57:114-8. [PMID: 27226686 PMCID: PMC4872488 DOI: 10.4103/0300-1652.182073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background: Urinary tract infection (UTI) is the most common bacterial infections in children. This studyaimed to investigate the oxidative and antioxidate status of plasma in patients with UTI and to compare them with those of the controls. Methods: This case–control study of 50–75 children in the given order was performed in 2013 at the Pediatric Clinic of infections in Zahedan Hospital of Ali Ibn Abi Talib. The antioxidative status of plasma were evaluated by measuring the total antioxidant capacity (TAC) The oxidative status of samples was assessed by measuring the total peroxide and the oxidative stress index (OSI) levels. The means of the parameters were compared and the relationship among them was determined. Data were analyzed using SPSS 20 (IBM Corp. Released 2011. IBM SPSS Statistics for Windows, Version 20.0. Armonk, NY: IBM Corp). Student's t-test and Mann–Whitney U-test were applied in various situations of our questions; 95% confidence interval was considered for the level of significance. Results: The results showed that total oxidant serum status in UTI patients was higher compared to controls when total antioxidant serum was lower. The balance of oxidant-antioxidant serum was in favor of oxidant serum and this term was confirmed by OSI. Conclusion: Our results showed that the plasma levels of TAC in patients with UTI were decreased compared to controls, and oxidant-antioxidant balance and OSI caused increased OS in patients.
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Affiliation(s)
- Gholamreza Soleimani
- Department of Pediatrics, School of Medicine, Children and Adolescents Health Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Simin Sadeghi-Bojd
- Department of Pediatrics, School of Medicine, Children and Adolescents Health Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Alireza Teimouri
- Children and Adolescents Health Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Alireza Nakhaee
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Alireza Sheikhhosseini
- Department of Pediatrics, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
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Abstract
Pyelonephritis is an inflammatory process, and oxidative stress plays a major role in it. Anti-inflammatory or antioxidant therapy given concomitantly with antibiotics should lower the risk of postpyelonephritic scarring. As the lack of review studies in the use of antioxidants in urinary tract infections was detected, this study was designed. We conducted a review of available articles in PubMed and Google Scholar with a simple review, using keywords of “antioxidant” and “pyelonephritis” with all their possible synonyms and combinations. Only interventional studies were collected. There were neither limitations on time, nor the location of the study, type of subjects, administration rout of the antioxidant drug, and the antioxidant drug used. After studying the abstracts or in some cases the full text of articles, they were categorized based on the type of antioxidant, type and number of subjects, rout of administration, dosing, duration of treatment, year of publication of the paper, and the results. A total of 66 articles published from 1991 to 2015 were found by studying just the title of the papers. Studying the abstracts reduced this number to 51 studies. Antioxidants used for this condition were Vitamins A, E, and C, cytoflavin, caffeic acid phenethyl ester, ebselen, allopurinol, melatonin, N-acetylcysteine, oleuropein, montelukast, oxytocin, ozon, dapsone, pentoxifyllin, tadalafil, bilirubin, cranberry, meloxicam, L-carnitine, colchicine, perfluoran, methylprednisolone, and dexamethasone. Studies show that antioxidants are capable of reducing oxidative stress and can be used effectively along with antibiotics to reduce the scar formation.
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Affiliation(s)
- Zahra Allameh
- Department of Clinical Pharmacy and Pharmacy Practice, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Jamshid Salamzadeh
- Department of Clinical Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Fan A, Jiang X, Mo Y, Tan H, Jiang M, Li J. Plasma levels of oxidative stress in children with steroid-sensitive nephrotic syndrome and their predictive value for relapse frequency. Pediatr Nephrol 2016; 31:83-8. [PMID: 26341250 DOI: 10.1007/s00467-015-3195-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 08/04/2015] [Accepted: 08/13/2015] [Indexed: 11/28/2022]
Abstract
BACKGROUND Oxidative stress has been reported to play an important role in children with primary nephrotic syndrome (PNS). However, the results of previous studies are controversial. METHODS Forty children with steroid-sensitive nephrotic syndrome (SSNS) and 20 age- and sex-matched healthy controls were enrolled. Patients were followed-up for 12-18 months and divided into three subgroups: frequent relapse (n = 10), non-frequent relapse (n = 12), and non-relapse (n = 18). The plasma levels of advanced oxidation protein products (AOPP), malondialdehyde (MDA), and superoxide dismutase (SOD) were tested in controls and patient group at first presentation and after 4 weeks of steroid treatment. RESULTS Patients had higher AOPP and MDA levels but lower SOD compared with controls. AOPP levels were significantly higher in the frequent relapse subgroup compared with the non-frequent relapse and non-relapse subgroups, respectively. No significant differences were found in the plasma levels of MDA and SOD among the three subgroups. AOPP >87.55 μmol/l before steroid treatment and AOPP >78.5 μmol/l after 4-week steroid treatment were positively correlated with the relapse frequency in patients with SSNS. CONCLUSIONS Children with SSNS have oxidative stress. The plasma levels of AOPP before and after 4-week steroid treatment may predict whether patients with SSNS will relapse frequently.
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Affiliation(s)
- Aiwen Fan
- Department of Pediatrics, Eastern District of the First Affiliated Hospital, Sun Yet-sen University, NO. 183, Huangpu East Road, Huangpu District, Guangzhou, 510070, China
| | - Xiaoyun Jiang
- Department of Pediatrics, the First Affiliated Hospital, Sun Yet-sen University, NO. 58, Zhongshan Road 2, Yuexiu District, Guangzhou, 510080, China.
| | - Ying Mo
- Department of Pediatrics, the First Affiliated Hospital, Sun Yet-sen University, NO. 58, Zhongshan Road 2, Yuexiu District, Guangzhou, 510080, China
| | - Huizhen Tan
- Department of Pediatrics, Eastern District of the First Affiliated Hospital, Sun Yet-sen University, NO. 183, Huangpu East Road, Huangpu District, Guangzhou, 510070, China
| | - Mengjie Jiang
- Department of Pediatrics, the First Affiliated Hospital, Sun Yet-sen University, NO. 58, Zhongshan Road 2, Yuexiu District, Guangzhou, 510080, China
| | - Jinhua Li
- Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, 3800, Australia
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Tabatabaei SM, Badalzadeh R, Mohammadnezhad GR, Balaei R. Effects of Cinnamon extract on biochemical enzymes, TNF-α and NF-κB gene expression levels in liver of broiler chickens inoculated with Escherichia coli. PESQUISA VETERINARIA BRASILEIRA 2015. [DOI: 10.1590/s0100-736x2015000900003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract: Infection with Escherichia coli (E. coli) is a common disease in poultry industry. The use of antibiotics to treat diseases is facing serious criticism and concerns. The medicinal plants may be effective alternatives because of their multiplex activities. The aim of this study was to investigate the effects of cinnamon extract on the levels of liver enzymes, tumor necrosis factor-alpha (TNF-α) and nuclear factor-kappa B (NF-κB) gene expressions in liver of broiler chickens infected with E. coli. Ninety Ross-308 broilers were divided into healthy or E. coli-infected groups, receiving normal or cinnamon extract (in concentrations of 100 or 200mg/kg of food) supplemented diets. E. coli suspension (108cfu) was injected subcutaneously after 12 days cinnamon administration. Seventy-two hours after E. coli injection, the blood samples were taken for biochemical analysis of liver enzymes in serum (spectrophotometrically), and liver tissue samples were obtained for detection of gene expression of inflammatory markers TNF-α and NF-κB, using real-time PCR. Infection with E. coli significantly increased the levels of TNF-α and NF-κB gene expressions as well as some liver enzymes including creatine-kinase (CK), lactate-dehydrogenase (LDH), alanine-transferase (ALT) and aspartate-transferase (AST) as compared with control group (P<0.05). Pre-administration of cinnamon extract in broilers diet (in both concentrations) significantly reduced the tissue levels of TNF-α and NF-κB gene expressions and enzymes CK and ALT in serum of broiler chickens inoculated with E. coli in comparison with E. coli group (P<0.05 and P<0.01). The levels of LDH and AST were significantly decreased only by 200mg/kg cinnamon extract in infected broilers. The level of alkaline-phosphatase (ALP) was not affected in any groups. Pre-administration of cinnamon extract in diets of broiler chickens inoculated with E. coli could significantly reduce the gene expression levels of pro-inflammatory mediators and liver enzymes activities, thereby protecting the liver against this pathologic condition.
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Could pyelonephritic scarring be prevented by anti-inflammatory treatment? An experimental model of acute pyelonephritis. BIOMED RESEARCH INTERNATIONAL 2014; 2014:134940. [PMID: 25105116 PMCID: PMC4106078 DOI: 10.1155/2014/134940] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 05/28/2014] [Accepted: 06/06/2014] [Indexed: 11/18/2022]
Abstract
Objectives. This study aimed to demonstrate if the addition of anti-inflammatory treatment to antibiotic therapy shows any superiority to the treatment with antibiotic only. Methods. Forty-nine Wistar rats were divided into 7 groups. Pyelonephritis was performed by E. coli injection to upper pole of kidneys except control group. Group 2 was not treated. Ceftriaxone, ketoprofen, “ceftriaxone + ketoprofen,” methylprednisolone, and “ceftriaxone + methylprednisolone” were given in the groups. The technetium-99m-dimercaptosuccinic acid scintigraphies were performed in 3rd day to detect pyelonephritis and 10th week to detect renal scarring. All kidneys were also histopathologically evaluated. Results. When 3rd day and 10th week scintigraphies were compared, initial 2.00 ± 0.30 point pyelonephritis score resulted in 0.71 ± 0.36 renal scar score in “ceftriaxone + ketoprofen” group (P = 0.039). Initial 2.00 ± 0.43 point pyelonephritis score resulted in 0.86 ± 0.26 renal scar score in “ceftriaxone + methylprednisolone” group (P = 0.041). Renal scar score was declined in “ceftriaxone + ketoprofen” group and “ceftriaxone + methylprednisolone” group compared with no-treatment group on 10th week of the study (P = 0.026, P = 0.044). On histopathological evaluation, it was seen that renal scar prevalence and expansion declined significantly in “ceftriaxone + ketoprofen and ceftriaxone + methylprednisolone” (P = 0.011, P = 0.023). Conclusion. It was evidenced that ceftriaxone treatment in combination with ketoprofen or methylprednisolone declined scar formation in scintigraphic and histopathologic examinations of the kidneys.
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El-Akabawy G, El-Kholy W. Neuroprotective effect of ginger in the brain of streptozotocin-induced diabetic rats. Ann Anat 2014; 196:119-28. [PMID: 24680376 DOI: 10.1016/j.aanat.2014.01.003] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2013] [Revised: 01/17/2014] [Accepted: 01/31/2014] [Indexed: 12/23/2022]
Abstract
Diabetes mellitus results in neuronal damage caused by increased intracellular glucose leading to oxidative stress. Recent evidence revealed the potential of ginger for reducing diabetes-induced oxidative stress markers. The aim of this study is to investigate, for the first time, whether the antioxidant properties of ginger has beneficial effects on the structural brain damage associated with diabetes. We investigated the observable neurodegenerative changes in the frontal cortex, dentate gyrus, and cerebellum after 4, 6, and 8 weeks of streptozotocin (STZ)-induced diabetes in rats and the effect(s) of ginger (500 mg/kg/day). Sections of frontal cortex, dentate gyrus, and cerebellum were stained with hematoxylin and eosin and examined using light microscopy. In addition, quantitative immunohistochemical assessments of the expression of inducible NO synthase (iNOS), tumor necrosis factor (TNF)-α, caspase-3, glial fibrillary acidic protein (GFAP), acetylcholinesterase (AChE), and Ki67 were performed. Our results revealed a protective role of ginger on the diabetic brain via reducing oxidative stress, apoptosis, and inflammation. In addition, this study revealed that the beneficial effect of ginger was also mediated by modulating the astroglial response to the injury, reducing AChE expression, and improving neurogenesis. These results represent a new insight into the beneficial effects of ginger on the structural alterations of diabetic brain and suggest that ginger might be a potential therapeutic strategy for the treatment of diabetic-induced damage in brain.
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Affiliation(s)
- Gehan El-Akabawy
- Menoufia University, Department of Anatomy and Embryology, Faculty of Medicine, Menoufia, Egypt.
| | - Wael El-Kholy
- Menoufia University, Department of Anatomy and Embryology, Faculty of Medicine, Menoufia, Egypt.
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Effect of Thymoquinone on Oxidative Stress in Escherichia coli-Induced Pyelonephritis in Rats. Curr Ther Res Clin Exp 2014; 72:204-15. [PMID: 24653507 DOI: 10.1016/j.curtheres.2011.09.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/01/2011] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Recurrent urinary tract infections are important in children and adults with diabetes mellitus and/or incontinence due to risk of pyelonephritis (PYN) and renal damage. There is a positive correlation released free radicals during PYN and renal damage. Experimental studies showed that antioxidant agents improve renal damage when used immediately after bacterial inoculation. OBJECTIVE The aim of the present study was to evaluate whether treatment by thymoquinone (TQ) before or during Escherichia coli inoculation prevents oxidative damage in acute pyelonephritis (PYN) in an ascending obstructive rat model. METHODS In this study, 42 Wistar rats were grouped as follows: control, PYN (24, 48, and 72 hours), and TQ-PYN (24, 48, and 72 hours). E. coli (1 ×10(9) colony forming units) was inoculated into the bladder via urethral catheterization in both the PYN and TQ groups. TQ injections were performed 24 hours before bacteria inoculation and repeated at 24-hour intervals during the indicated time at a dose of 10 mg/kg body weight intraperitoneally in TQ groups. RESULTS Superoxide dismutase activity was statistically lower in the TQ-PYN-48 and -72 groups than the PYN-48 and -72 groups (P < 0.001, P = 0.004, respectively). Catalase activity was significantly higher in PYN-24, -48, and -72 groups than the control group (P < 0.001). In addition, there was a significant difference between the TQ-PYN-24, -48, and -72 groups and PYN groups in terms of glutathione peroxidase activity (P < 0.001, P = 0.026, P = 0.046, respectively). When the TQ-PYN-72 group was compared with the PYN-72 group, malondialdehyde levels were significantly lower in the TQ-PYN-72 group than in the PYN-72 group (P = 0.033). A histologic examination also confirmed the protective effect of TQ. In statistical analysis of histopathologic findings, there were significant differences between the PYN-24 and TQ-PYN-24, PYN-48 and TQ-PYN-48, and PYN-72 and TQ-PYN-72 groups (P = 0.008, P < 0.001, P < 0.001, respectively). CONCLUSIONS The results indicate that TQ administration attenuated the oxidative damage that occurred in PYN and, therefore, could be used as a supportive agent to protect the kidneys from oxidative damage caused by PYN.
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Anti-inflammatuar and anti-oxidative effects of Nigella sativa L.: 18FDG-PET imaging of inflammation. Mol Biol Rep 2014; 41:2827-34. [DOI: 10.1007/s11033-014-3137-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Accepted: 01/11/2014] [Indexed: 11/26/2022]
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An endogenous ribonuclease inhibitor regulates the antimicrobial activity of ribonuclease 7 in the human urinary tract. Kidney Int 2013; 85:1179-91. [PMID: 24107847 PMCID: PMC3981961 DOI: 10.1038/ki.2013.395] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 08/05/2013] [Accepted: 08/22/2013] [Indexed: 12/16/2022]
Abstract
Recent studies stress the importance of antimicrobial peptides in protecting the urinary tract from infection. Previously, we have shown that ribonuclease 7 (RNase 7) is a potent antimicrobial peptide that has broad-spectrum antimicrobial activity against uropathogenic bacteria. The urothelium of the lower urinary tract and intercalated cells of the kidney produce RNase 7 but regulation of its antimicrobial activity has not been well defined. Here we characterize the expression of an endogenous inhibitor, ribonuclease inhibitor (RI), in the urinary tract and evaluate its effect on RNase 7’s antimicrobial activity. Using RNA isolated from non-infected human bladder and kidney tissue, quantitative real-time PCR showed that RNH1, the gene encoding RI, is constitutively expressed throughout the urinary tract. With pyelonephritis, RNH1 expression and RI peptide production significantly decrease. Immunostaining localized RI production to the umbrella cells of the bladder and intercalated cells of the renal collecting tubule. In vitro assays showed that RI bound to RNase 7 and suppressed its antimicrobial activity by blocking its ability to bind the cell wall of uropathogenic bacteria. Thus, these results demonstrate a new immunomodulatory role for RI and identified a unique regulatory pathway that may affect how RNase 7 maintains urinary tract sterility.
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Red orange: experimental models and epidemiological evidence of its benefits on human health. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:157240. [PMID: 23738032 PMCID: PMC3659473 DOI: 10.1155/2013/157240] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Accepted: 04/10/2013] [Indexed: 02/07/2023]
Abstract
In recent years, there has been increasing public interest in plant antioxidants, thanks to the potential anticarcinogenic and cardioprotective actions mediated by their biochemical properties. The red (or blood) orange (Citrus sinensis (L.) Osbeck) is a pigmented sweet orange variety typical of eastern Sicily (southern Italy), California, and Spain. In this paper, we discuss the main health-related properties of the red orange that include anticancer, anti-inflammatory, and cardiovascular protection activities. Moreover, the effects on health of its main constituents (namely, flavonoids, carotenoids, ascorbic acid, hydroxycinnamic acids, and anthocyanins) are described. The red orange juice demonstrates an important antioxidant activity by modulating many antioxidant enzyme systems that efficiently counteract the oxidative damage which may play an important role in the etiology of numerous diseases, such as atherosclerosis, diabetes, and cancer. The beneficial effects of this fruit may be mediated by the synergic effects of its compounds. Thus, the supply of natural antioxidant compounds through a balanced diet rich in red oranges might provide protection against oxidative damage under differing conditions and could be more effective than, the supplementation of an individual antioxidant.
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Baronetti JL, Villegas NA, Aiassa V, Paraje MG, Albesa I. Hemolysin from Escherichia coli induces oxidative stress in blood. Toxicon 2013; 70:15-20. [PMID: 23567037 DOI: 10.1016/j.toxicon.2013.03.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Revised: 03/11/2013] [Accepted: 03/18/2013] [Indexed: 02/05/2023]
Abstract
Hemolysin (HlyA) produced by some stains of Escherichia coli is considered to be an important virulence factor of those bacteria. On the other hand, reactive oxygen species (ROS) have been reported to be involved in the pathogenesis of different diseases via oxidative stress generation. The purpose of this study was to analyze the capacity of HlyA to induce oxidative stress in whole blood cultures (WBCs). To this end, ROS production, the damage induced in lipids and proteins, and the antioxidant defense system was evaluated in blood cultures exposed to low concentrations of HlyA. We found that HlyA increased the level of free radicals detected by chemiluminescence assay. Moreover, lipid peroxidation and protein damage was significantly increased in cultures treated with HlyA in comparation with those found in control cultures. On the other hand, a decrease in total antioxidant capacity of plasma and in the activity of superoxide dismutase (SOD) was observed in plasma from blood treated with HlyA. Collectively, our data demonstrate that low concentrations of E. coli hemolysin induced oxidative stress in WBCs with the induction of different oxidative damage biomarkers.
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Affiliation(s)
- José Luis Baronetti
- Department of Pharmacy, IMBIV-CONICET, Faculty of Chemical Sciences, National University of Córdoba, Haya de la Torre y Medina Allende, University Campus, 5000 Córdoba, Argentina
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Evaluation of the effects of ozone therapy on Escherichia coli-induced cytitis in rat. Ir J Med Sci 2013; 182:557-63. [PMID: 23456133 DOI: 10.1007/s11845-013-0926-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 02/13/2013] [Indexed: 12/22/2022]
Abstract
OBJECTIVES The aim of the study was to investigate the effect of ozone on oxidative/nitrosative stress and bladder injury caused by Escherichia coli in rat bladder. METHODS Twenty-one Wistar-Albino-type female rats included in the study were divided into three groups of equal number: (1) sham operation (control), (2) E. coli-only (EC), (3) EC + ozone. After ozone therapy for 3 days, urine and tissue samples were obtained for biochemical, microbiological, and histopathological analysis. RESULTS Tissue malondialdehyde (MDA), myeloperoxidase (MPO), and nitric oxide (NO) level were increased, whereas superoxide dismutase (SOD) and glutathione peroxidase (GPx) activity was decreased in the EC group. MDA, MPO, and NO levels were decreased, whereas SOD, GPx activity was increased in the ozone-treated group. Also, there was no bacterial translocation in this group. CONCLUSION The results of the present study suggest that ozone may be used as an agent to protect the bladder from oxidative/nitrosative stress occurring in cystitis.
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Induction of oxidative stress in kidney. Int J Nephrol 2012; 2012:465897. [PMID: 22577546 PMCID: PMC3345218 DOI: 10.1155/2012/465897] [Citation(s) in RCA: 199] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 01/27/2012] [Accepted: 02/06/2012] [Indexed: 02/07/2023] Open
Abstract
Oxidative stress has a critical role in the pathophysiology of several kidney diseases, and many complications of these diseases are mediated by oxidative stress, oxidative stress-related mediators, and inflammation. Several systemic diseases such as hypertension, diabetes mellitus, and hypercholesterolemia; infection; antibiotics, chemotherapeutics, and radiocontrast agents; and environmental toxins, occupational chemicals, radiation, smoking, as well as alcohol consumption induce oxidative stress in kidney. We searched the literature using PubMed, MEDLINE, and Google scholar with “oxidative stress, reactive oxygen species, oxygen free radicals, kidney, renal injury, nephropathy, nephrotoxicity, and induction”. The literature search included only articles written in English language. Letters or case reports were excluded. Scientific relevance, for clinical studies target populations, and study design, for basic science studies full coverage of main topics, are eligibility criteria for articles used in this paper.
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Alp H, Aytekin I, Atakisi O, Hatipoglu NK, Basarali K, Ogun M, Buyukbas S, Altintas L, Ekici H, Alp A. The Effects of Caffeic Acid Phenethyl Ester and Ellagic Acid on the Levels of Malondialdehyde, Reduced Glutathione and Nitric Oxide in the Lung, Liver and Kidney Tissues in Acute Diazinon Toxicity in Rats. ACTA ACUST UNITED AC 2011. [DOI: 10.3923/javaa.2011.1488.1494] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Kajbafzadeh AM, Elmi A, Talab SS, Sadeghi Z, Emami H, Sotoudeh M. Autografting of Renal Progenitor Cells Ameliorates Kidney Damage in Experimental Model of Pyelonephritis. CELL MEDICINE 2010; 1:115-22. [PMID: 27004131 DOI: 10.3727/215517910x551044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Current therapies for pyelonephritic renal damage have severe limitations; stem cells may offer an exciting potential in regenerating nephrology. We aimed to investigate the feasibility of direct intrarenal injection of autologous renal progenitor cells (RPCs; originated from epithelial cells in Bowman's capsule) in chronic pyelonephritis rat model. Twenty-seven rats were divided into three groups. The control group (GI, n = 3) underwent sham subcapsular injection of isotonic saline. Pyelonephritis was induced in the right kidney of the remaining 24 rats and isotonic saline (GII, n = 12) or labeled autologous RPCs, obtained from a biopsy of left kidney (GIII, n = 12), were injected into the subcapsular space 6 weeks later. At 7, 14, 28, and 60 days, dimercaptosuccinic acid scan was performed in three animals of each group at every interval and subsequently renal sections were obtained for the evaluation of tubular and glomerular regeneration and proliferation. Cell transplantation resulted in the reduction of tubular and glomerular atrophy after 2 weeks. The transplanted cells were observed in the reconstructed region of the kidneys as evidenced by the presence of fluorescently labeled cells both in tubules and glomeruli. We also observed significant decrease in interstitial fibrosis in the fourth week and there were higher amount of Ki-67-positive cells in GIII. Notably, the right renal tissue integrity was significantly improved in this group and revealed normal cortical function on day 60. Transplanting RPCs showed the potential for partial augmentation of kidney structure and function in pyelonephritis. Cellular repair was seen predominantly in the proximal tubule, the major site of injury in pyelonephritis. Our findings may pave the way toward the future regeneration of renal scarring of pyelonephritis in children.
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Affiliation(s)
- Abdol-Mohammad Kajbafzadeh
- Pediatric Urology Research Center, Children's Hospital Medical Center, Tehran University of Medical Sciences , Tehran , Iran
| | - Azadeh Elmi
- Pediatric Urology Research Center, Children's Hospital Medical Center, Tehran University of Medical Sciences , Tehran , Iran
| | - Saman Shafaat Talab
- Pediatric Urology Research Center, Children's Hospital Medical Center, Tehran University of Medical Sciences , Tehran , Iran
| | - Zhina Sadeghi
- Pediatric Urology Research Center, Children's Hospital Medical Center, Tehran University of Medical Sciences , Tehran , Iran
| | - Hamed Emami
- Pediatric Urology Research Center, Children's Hospital Medical Center, Tehran University of Medical Sciences , Tehran , Iran
| | - Masoud Sotoudeh
- † Department of Pathology, Shariati Hospital, Tehran University of Medical Sciences , Tehran , Iran
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Gurocak S, Ure I, Cumaoglu A, Gonul II, Sen I, Tan O, Aricioglu A, Bozkirli I. Renal tissue damage after experimental pyelonephritis: role of antioxidants and selective cyclooxygenase-2 inhibitors. Urology 2010; 76:508.e1-5. [PMID: 20510442 DOI: 10.1016/j.urology.2010.03.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2009] [Revised: 02/16/2010] [Accepted: 03/16/2010] [Indexed: 01/12/2023]
Abstract
OBJECTIVES To investigate the involvement of oxidative stress in the pathogenesis of acute pyelonephritis, and to evaluate the impact of meloxicam and/or L-carnitine in addition to conventional antibiotic treatment. METHODS A total of 48 Wistar rats were divided into 4 groups according to their treatment, which was started 1 day after inoculation of all rats with Escherichia coli (ATCC 25 922, 10(10) cfu/mL). Group 1 received only antibiotic treatment with ceftriaxone (50 mg/kg, IM). Groups 2 and 3 received L-carnitine (500 mg/kg, IM) and meloxicam (3 mg/kg, IM) in addition to conventional treatment, respectively. Group 4 received combination therapy (L-carnitine and meloxicam) in addition to the first group. Rats were killed 3 and 7 days after E. coli inoculation and underwent nephrectomy. Histologic determination of tubular atrophy, acute and chronic inflammation, interstitial fibrosis and biochemical determination of superoxide dismutase and catalase activity, total thiol content, total antioxidant capacity, and malondialdehyde and protein hydroperoxide levels were measured. RESULTS Interstitial fibrosis (P = .06), chronic inflammation (P = .536), and tubular atrophy (P = 0.094) decreased in group 4 compared with the other groups, but there was a statistically significant decrease only in acute inflammation (P = .015). In addition, if the day of nephrectomy is considered, there was again a significant decrease in acute inflammation on day 7 compared with day 3 in groups 2, 3, and 4 (P = .002). Catalase significantly increased in group 2 (P = .029), group 3 (P = .02), and group 4 (P = .014), and decreased in group 1 (P = .012) in day 7. CONCLUSIONS L-carnitine and meloxicam alleviated oxidative stress, probably by decreasing lipid peroxidation and enforcing antioxidant defense system. Acute renal inflammatory injury can be prevented much more effectively by combination therapy rather than by conventional therapy alone.
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Affiliation(s)
- Serhat Gurocak
- Department of Urology, Gazi University, Faculty of Medicine, Ankara, Turkey.
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Inhibitory effect of caffeic acid phenethyl ester on mice bearing tumor involving angiostatic and apoptotic activities. Chem Biol Interact 2010; 186:152-6. [PMID: 20433813 DOI: 10.1016/j.cbi.2010.04.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2010] [Revised: 04/13/2010] [Accepted: 04/19/2010] [Indexed: 11/23/2022]
Abstract
UNLABELLED This study aims at investigating the anti-tumor effect of caffeic acid phenethyl ester (CAPE) against animal carcinogenesis. In order to substantiate this fact implanted tumor Ehrlich carcinoma cells were assessed in vivo to Swiss mice strain. We found that administrating of CAPE (15 mg/kg S.C.) showed that the tumor volume decreased significantly by 51%. As a result, it improved animal chances of survival and they became healthier. An anti-angiogenic effect of CAPE in vivo was observed, as determined by a significant serum matrix metalloproteinase (MMP-9) reduction (142.1 ng/ml), activation of endostatin serum level (1.9 ng/ml), as well as DNA fragmentation in tumor treated mice when compared with untreated ones. CONCLUSION CAPE has a significant inhibitory effect on tumor in vivo. This inhibition may be related to its angiostatic and apoptotic effects. It also reduced angiogenic factors which may shift the equilibrium to the angiostatic effect of CAPE. These findings provide the possibility for the future use of CAPE as tumor therapy in human clinical trials.
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Pukkila-Worley R, Holson E, Wagner F, Mylonakis E. Antifungal drug discovery through the study of invertebrate model hosts. Curr Med Chem 2009; 16:1588-95. [PMID: 19442135 DOI: 10.2174/092986709788186237] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
There is an urgent need for new antifungal agents that are both effective and non-toxic in the therapy of systemic mycoses. The model nematode Caenorhabditis elegans has been used both to elucidate evolutionarily conserved components of host-pathogen interactions and to screen large chemical libraries for novel antimicrobial compounds. Here we review the use of C. elegans models in drug discovery and discuss caffeic acid phenethyl ester, a novel antifungal agent identified using an in vivo screening system. C. elegans bioassays allow high-throughput screens of chemical libraries in vivo. This whole-animal system may enable the identification of compounds that modulate immune responses or affect fungal virulence factors that are only expressed during infection. In addition, compounds can be simultaneously screened for antifungal efficacy and toxicity, which may overcome one of the main obstacles in current antimicrobial discovery. A pilot screen for antifungal compounds using this novel C. elegans system identified 15 compounds that prolonged survival of nematodes infected with the medically important human pathogen Candida albicans. One of these compounds, caffeic acid phenethyl ester (CAPE), was an effective antifungal agent in a murine model of systemic candidiasis and had in vitro activity against several fungal species. Interestingly, CAPE is a potent immunomodulator in mammals with several distinct mechanisms of action. The identification of CAPE in a C. elegans screen supports the hypothesis that this model can identify compounds with both antifungal and host immunomodulatory activity.
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Affiliation(s)
- R Pukkila-Worley
- Division of Infectious Diseases, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
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Ye Z, Liu Z, Henderson A, Lee K, Hostetter J, Wannemuehler M, Hendrich S. Increased CYP4B1 mRNA is associated with the inhibition of dextran sulfate sodium-induced colitis by caffeic acid in mice. Exp Biol Med (Maywood) 2009; 234:605-16. [PMID: 19307459 DOI: 10.3181/0901-rm-1] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Susceptibility to inflammatory bowel diseases depends upon interactions between the genetics of the individual and induction of chronic mucosal inflammation. We hypothesized that administration of dietary phenolics, caffeic acid and rutin, would suppress upregulation of inflammatory markers and intestinal damage in a mouse model of colitis. Colitis was induced in C3H/ HeOuJ mice (8 weeks old, 6 male/6 female per treatment) with 1.25% dextran sulfate sodium (DSS) for 6 d in their drinking water. Rutin (1.0 mmol (524 mg)/kg in diet), caffeic acid (1.0 mmol (179 mg)/kg in diet), and hypoxoside extract (15 mg/d, an anticolitic phenolic control) were fed to the mice for 7 d before and during DSS treatment, as well as without DSS treatment. Body weight loss was prevented by rutin and caffeic acid during DSS treatment. Colon lengths in mice fed caffeic acid and hypoxoside during DSS treatment were similar to DSS-negative control. Food intake was improved and myeloperoxidase (MPO) was decreased with each phenolic treatment in DSS-treated mice compared with DSS treatment alone. Colonic mRNA expression of IL-17 and iNOS were inhibited when IL-4 was increased by each phenolic treatment combined with DSS, whereas CYP4B1 mRNA was increased only by caffeic acid in DSS-treated mice, compared with DSS treatment alone. Colonic and cecal histopathology scores of DSS-treated mice were significantly more severe (P < 0.01) than in mice fed caffeic acid before and during DSS treatment, based on mucosal height, necrosis, edema, erosion, and inflammatory cell infiltration. Although both rutin and caffeic acid suppressed the expression of selected inflammatory markers, only caffeic acid protected against DSS-induced colitis, in association with normalization of CYP4B1 expression. The inhibition of DSS-induced colitic pathology by caffeic acid was mediated by mechanisms in addition to anti-inflammatory effects that deserve further study.
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Affiliation(s)
- Zhong Ye
- The Iowa State University, Department of Food Science and Human Nutrition, 224D MacKay, Ames, IA 50011, USA
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Caffeic acid phenethyl ester inhibits osteoclastogenesis by suppressing NF kappaB and downregulating NFATc1 and c-Fos. Int Immunopharmacol 2009; 9:774-80. [PMID: 19285574 DOI: 10.1016/j.intimp.2009.03.001] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2009] [Revised: 03/02/2009] [Accepted: 03/02/2009] [Indexed: 12/13/2022]
Abstract
Osteoclasts are multinuclear cells of myeloid lineage responsible for bone resorption. The anti-inflammatory property of caffeic acid phenethyl ester (CAPE), an active component of the propolis of honeybee hives, has been revealed. Since the regulatory mechanism of differentiation and activation of osteoclasts shares many well-known signaling pathways with that of inflammation, we investigated whether CAPE has any effect on osteoclastogenesis. CAPE potently suppressed osteoclastogenesis in cultures of bone marrow-derived precursor cells with the osteoclast differentiation factor, receptor activator of nuclear factor kappaB ligand (RANKL). While the RANKL-stimulated activation of the ERK, JNK, and p38 MAPK signaling pathways was not affected, the DNA binding and transcription activity of NF kappaB were reduced by CAPE treatment. In addition, CAPE blocked the induction of NFATc1 and c-Fos following RANKL stimulation. Forced expression of c-Fos could reverse the inhibitory effect of CAPE on osteoclastogenesis. Finally, CAPE significantly inhibited the RANKL-induced osteoclast formation in mouse calvariae in vivo. We propose that CAPE might be useful as a therapeutic agent for treatment of bone destructive diseases.
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Görür S, Çelik S, Hakverdi S, Aslantaş Ö, Erdoğan S, Aydın M, Ocak S, Namık Kiper A. Preventive Effect of Rolipram, a Phosphodiesterase 4 Enzyme Inhibitor, on Oxidative Renal Injury in Acute Ascending Pyelonephritis Model in Rats. Urology 2008; 72:743-8. [DOI: 10.1016/j.urology.2008.04.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2008] [Revised: 03/13/2008] [Accepted: 04/09/2008] [Indexed: 10/21/2022]
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Celik S, Erdogan S. Caffeic acid phenethyl ester (CAPE) protects brain against oxidative stress and inflammation induced by diabetes in rats. Mol Cell Biochem 2008; 312:39-46. [PMID: 18265948 DOI: 10.1007/s11010-008-9719-3] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2007] [Accepted: 01/29/2008] [Indexed: 01/12/2023]
Abstract
Diabetic patients reveal significant disorders, such as nephropathy, cardiomyopathy, and neuropathy. As oxidative stress and inflammation seem to be implicated in the pathogenesis of diabetic brain, we aimed to investigate the effects of caffeic acid phenethyl ester (CAPE) on oxidative stress and inflammation in diabetic rat brain. Diabetes was induced by a single dose of streptozotocin (45 mg kg(-1), i.p.) injection into rats. Two days after streptozotocin treatment 10 microM kg(-1) day(-1) CAPE was administrated and continued for 60 days. Here, we demonstrate that CAPE significantly decreased the levels of nitric oxide and malondialdehyde induced by diabetes, and the activities of catalase, glutathione peroxidase, and xanthine oxidase in the brain. However, glutathione levels were increased by CAPE. The mRNA expressions of tumor necrosis factor (TNF)-alpha and interferon (IFN)-gamma, and inducible nitric oxide synthase (iNOS) were remarkably enhanced in brain by diabetes. CAPE treatments significantly suppressed these inflammatory cytokines (about 70% for TNF-alpha, 26% for IFN-gamma) and NOS (completely). Anti-inflammatory cytokine IL-10 mRNA expression was not affected by either diabetes or CAPE treatments. In conclusion, diabetes induces oxidative stress and inflammation in the brain, and these may be contributory mechanisms involved in this disorder. CAPE treatment may reverse the diabetic-induced oxidative stress in rat brains. Moreover, CAPE reduces the mRNA expressions of TNF-alpha and IFN-gamma in diabetic brain; suggesting CAPE suppresses inflammation as well as oxidative stress occurred in the brain of diabetic patients.
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Affiliation(s)
- Sefa Celik
- Department of Biochemistry, Faculty of Veterinary Medicine, Mustafa Kemal University, Tayfur Sokmen Kampusu 31034, Antakya, Hatay, Turkey.
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