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Wasti Y, Muntaqua D, Majid M, Naz I, Zafar A, Khan SU, Kazmi STB, Rehman TU, Irshad N, Fatima H. Characterization and comparative evaluation of wound healing potential of Ajugarin I and Ajuga bracteosa Wall. ex Benth. Front Chem 2024; 11:1325578. [PMID: 38362004 PMCID: PMC10867974 DOI: 10.3389/fchem.2023.1325578] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 12/15/2023] [Indexed: 02/17/2024] Open
Abstract
Ajuga bracteosa (family: Lamiaceae), commonly known as kauri booti, is an important ethnomedicinal plant. The current research was conducted to appraise and compare the in vitro antioxidant and antibacterial profiles as well as in vivo wound healing potentials of Ajugarin I and A. bracteosa extract. Ajugarin I and polyphenols in A. bracteosa were enumerated by reversed-phase high-performance liquid chromatography analysis that confirmed significant amounts of Ajugarin I (2.2 ± 0.02 μg/mg DW) and other phenolic compounds (14 out of 17 standards). A. bracteosa (374.4 ± 0.20 µg AAE/mg of DW, 201.9 ± 0.20 µg AAE/mg of DW, 87 ± 0.30%) showed a higher antioxidant profile compared to Ajugarin I (221.8 ± 0.50 µg AAE/mg of DW, 51.8 ± 0.40 µg AAE/mg of DW, 27.65 ± 0.80%) with 1.86-, 3.89-, and 3.15-fold greater activity in ferric reducing antioxidant power, total antioxidant capacity, and free radical scavenging assays, respectively. Likewise, A. bracteosa showed antibacterial activity against 3/5 strains (MIC 25-200 μg/ml) than Ajugarin I (2/5 strains; MIC 50-200 μg/ml). Hemolytic (<2% hemolysis) and dermal toxicity tests rendered both samples non-toxic. Additionally, A. bracteosa (100 ± 2.34% at day 12; 9.33 ± 0.47 days) demonstrated 1.11- and 1.24-fold higher percent wound contraction and epithelization time, respectively, than Ajugarin I (95.6 ± 1.52% at day 12; 11.6 ± 0.47 days) as assessed by an excision wound model in mice. Histopathological examination further reinforced the better wound healing potential of A. bracteosa with good epithelization, collagen synthesis, fibroblast proliferation, and revascularization. Briefly, we endorse the significant comparative antioxidant, antibacterial, and wound healing activities of A. bracteosa and Ajugarin I and present these as prospective candidates for wound healing drugs.
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Affiliation(s)
- Yusra Wasti
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Durdana Muntaqua
- Shifa College of Pharmaceutical Sciences, Shifa Tameer-e-Millat University, Islamabad, Pakistan
| | - Muhammad Majid
- Faculty of Pharmacy, Hamdard University, Islamabad, Pakistan
| | - Iffat Naz
- Department of Biology, Science Unit, Deanship of Educational Services, Qassim University, Buraidah, Saudi Arabia
| | - Aroosa Zafar
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Safir Ullah Khan
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | | | - Tofeeq Ur Rehman
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Nadeem Irshad
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Humaira Fatima
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
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Hong CS, Menshikova EV, Whiteside TL, Jackson EK. Assessment of ATP Metabolism to Adenosine by Ecto-Nucleotidases Carried by Tumor-Derived Small Extracellular Vesicles. Res Sq 2024:rs.3.rs-3876953. [PMID: 38343828 PMCID: PMC10854312 DOI: 10.21203/rs.3.rs-3876953/v1] [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] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Background Immunosuppression is a hallmark of cancer progression. Tumor-derived small extracellular vesicles (sEV), also known as TEX, produce adenosine (ADO) and can mediate tumor-induced immunosuppression. Methods Here, the ATP pathway of ADO production (ATP◊ADP◊AMP◊ADO) by ecto-nucleotidases carried in sEV was evaluated by a novel method using N6-etheno-ATP (eATP) and N6-etheno-AMP (eAMP) as substrates. The "downstream" N6-etheno-purines (ePurines) were measured by high performance liquid chromatography with fluorescence detection (HPLC-FL). Results Human melanoma cell-derived TEX (MTEX) metabolized eATP to N6-etheno-ADP (eADP), eAMP and N6-etheno-Adenosine (eADO) more robustly than control keratinocyte cell-derived sEV (CEX); due to accelerated conversion of eATP to eADP and eADP to eAMP MTEX and CEX similarly metabolized eAMP to eADO. Blocking of the ATP pathway with the selective CD39 inhibitor ARL67156 or pan ecto-nucleotidase inhibitor POM-1 normalized the ATP pathway but neither inhibitor completely abolished it. In contrast, inhibition of CD73 by PSB12379 or AMPCP abolished eADO formation in both MTEX and CEX, suggesting that targeting CD73 is the preferred approach to eliminating ADO produced by sEV. Conclusions The noninvasive, sensitive, and specific assay assessing ePurine metabolism ± ecto-nucleotidase inhibitors in TEX enables the personalized identification of the ecto-nucleotidase primarily involved in ADO production in patients with cancer. The assay could guide precision medicine by determining which purine is the preferred target for inhibitory therapeutic interventions.
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Akolawole JS, Okoye PAC, Omokpariola D. Effect of storage on the levels of sodium benzoate in soft drinks sold in some Nigerian market with exposure and health risk assessment. Environ Anal Health Toxicol 2022; 37:e2022030-0. [PMID: 36916043 PMCID: PMC10014745 DOI: 10.5620/eaht.2022030] [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: 07/04/2022] [Accepted: 10/04/2022] [Indexed: 11/05/2022] Open
Abstract
Soft drinks consumption is still a controversial issue for public health and public policy, as the influence storage condition impacts taste, color and shelf life. In all, fifty (50) soft drinks samples, acquired from Enugu, Aba, Asaba, Onitsha and Owerri markets in Nigeria, were subjected to four different storage conditions namely: room temperature (RT), refrigerated (RF), 40 °C and 60 °C for 15 days after which they were analyzed for sodium benzoate concentration using HPLC - UV/Vis detector. The results showed on the average that at RT and RF, soft drinks from Aba had the highest concentration of sodium benzoate (98.7 mg/L and 112.9 mg/L) respectively while samples from Asaba had least concentration of 39.9 mg/L and 38.1 mg/L. At increased temperature of 40 °C, the concentration of sodium benzoate increased generally across the sample, while at 60 °C, the levels in all the samples analyzed were either reduced to less than 50% or below detection level, which suggest that degradation of sodium benzoate at this elevated temperature could result in benzene formation, which is a known carcinogen. Carcinogenic and non-carcinogenic risk assessment showed that children are at risk compared to adults due to higher sodium benzoate daily intake leading to high rate of hyperactivity in correlation to malaise.
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Affiliation(s)
- Joseph Segun Akolawole
- Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, Awka, Anambra State Nigeria.,Agulu Central Laboratory, National Agency for Food Drug Administration and Control, Agulu, Anambra State, Nigeria
| | | | - Daniel Omokpariola
- Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, Awka, Anambra State Nigeria.,Quality Unit, OCP Africa Fertilizer Nigeria Limited, Maitama, Abuja, Nigeria
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Mourouzis P, Vladitsi M, Nikolaou C, Kalogiouri NP, Samanidou V, Tolidis K. Monomers Release from Direct and Indirect Resin-Based Restorations after Immersion in Common Beverages. Polymers (Basel) 2022; 14. [PMID: 36501552 DOI: 10.3390/polym14235158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 11/16/2022] [Accepted: 11/24/2022] [Indexed: 11/30/2022] Open
Abstract
Impurities or degradation of the components of resin-based materials have been throughout investigated by the dental scientific community. The aim of this study is to examine if there is a release of monomers from resin-based materials when they are immersed in common beverage materials which are consumed by the population in large quantities. Three representative dental materials were used for this study, one resin composite indicated for direct restorations and two Computer Aided Design and Computer Aided Manufacturing (CAD/CAM) materials with different methods of fabrication. Forty specimens were fabricated from each material using a low-speed precision sectioning blade 12 × 14 × 2 mm in size and immersed in wine, coffee or cola for 48 h and 12 days, equivalent to 1 month and 1 year of consumption. The materials released more monomers when the materials were immersed in the wine solution (p < 0.05). CAD/CAM materials release less monomers compared to the resin composite material indicated for direct restorations (p < 0.05). The CAD/CAM materials leach a limited quantity of monomers when they are immersed in common beverages due to the manufacturing process which includes high-temperature/high-pressure polymerization.
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Gomez-Lopez A, Rueda Hernandez C, Pando Pozo R, Sanchez Gonzalez LM. Dynamics of gliotoxin and bis(methylthio)gliotoxin production during the course of Aspergillus fumigatus infection. Med Mycol 2022; 60:6567851. [PMID: 35416255 DOI: 10.1093/mmy/myac025] [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: 12/10/2021] [Revised: 03/14/2022] [Accepted: 04/10/2022] [Indexed: 11/12/2022] Open
Abstract
As recently described, fungal secondary metabolism activates during infection in response to a hostile host environment. Gliotoxin and bis(methylthio)gliotoxin are two recognized secondary metabolites produced by Aspergillus fumigatus with differential cytotoxicity and involved in virulence. We sought to describe the temporal dynamics of gliotoxin and bis(methylthio)gliotoxin during A. fumigatus progression to further explore their role in the infection. First, we optimized the production of the mycotoxins under different in vitro growth conditions and then specifically measured them using an UHPLC/PDA method. The analytical conditions were selected after testing different parameters such as extraction procedures, column type, and mobile phase composition. We found that gliotoxin and bis(methylthio)gliotoxin are differentially excreted to the extracellular media during the course of A. fumigatus infection regardless of the growth format tested. Dynamic profiles show an early production of gliotoxin, which, after reaching a maximum, decreases coinciding with the increase in the production of the inactive derivative bis(methylthio)gliotoxin. Presence of gliotoxin may indicate an early phase of fungal development, whereas detection of bis(methylthio)gliotoxin may correspond to a more advanced stage of infection. Our chromatographic method successfully characterizes these secondary metabolites. Thus, it may potentially be used to further understand Aspergillus infection.
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Affiliation(s)
- Alicia Gomez-Lopez
- Mycology Reference and Research Laboratory, National Center for Microbiology (CNM - ISCIII), Majadahonda (Madrid), Spain
| | - Cristina Rueda Hernandez
- Mycology Reference and Research Laboratory, National Center for Microbiology (CNM - ISCIII), Majadahonda (Madrid), Spain
| | - Rebeca Pando Pozo
- Mycology Reference and Research Laboratory, National Center for Microbiology (CNM - ISCIII), Majadahonda (Madrid), Spain
| | - Luis Miguel Sanchez Gonzalez
- Mycology Reference and Research Laboratory, National Center for Microbiology (CNM - ISCIII), Majadahonda (Madrid), Spain
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Lipson Feder C, Cohen O, Shapira A, Katzir I, Peer R, Guberman O, Procaccia S, Berman P, Flaishman M, Meiri D. Fertilization Following Pollination Predominantly Decreases Phytocannabinoids Accumulation and Alters the Accumulation of Terpenoids in Cannabis Inflorescences. Front Plant Sci 2021; 12:753847. [PMID: 34804093 PMCID: PMC8602813 DOI: 10.3389/fpls.2021.753847] [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] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 10/04/2021] [Indexed: 06/13/2023]
Abstract
In the last decades, growing evidence showed the therapeutic capabilities of Cannabis plants. These capabilities were attributed to the specialized secondary metabolites stored in the glandular trichomes of female inflorescences, mainly phytocannabinoids and terpenoids. The accumulation of the metabolites in the flower is versatile and influenced by a largely unknown regulation system, attributed to genetic, developmental and environmental factors. As Cannabis is a dioecious plant, one main factor is fertilization after successful pollination. Fertilized flowers are considerably less potent, likely due to changes in the contents of phytocannabinoids and terpenoids; therefore, this study examined the effect of fertilization on metabolite composition by crossbreeding (-)-Δ9-trans-tetrahydrocannabinol (THC)- or cannabidiol (CBD)-rich female plants with different male plants: THC-rich, CBD-rich, or the original female plant induced to develop male pollen sacs. We used advanced analytical methods to assess the phytocannabinoids and terpenoids content, including a newly developed semi-quantitative analysis for terpenoids without analytical standards. We found that fertilization significantly decreased phytocannabinoids content. For terpenoids, the subgroup of monoterpenoids had similar trends to the phytocannabinoids, proposing both are commonly regulated in the plant. The sesquiterpenoids remained unchanged in the THC-rich female and had a trend of decrease in the CBD-rich female. Additionally, specific phytocannabinoids and terpenoids showed an uncommon increase in concentration followed by fertilization with particular male plants. Our results demonstrate that although the profile of phytocannabinoids and their relative ratios were kept, fertilization substantially decreased the concentration of nearly all phytocannabinoids in the plant regardless of the type of fertilizing male. Our findings may point to the functional roles of secondary metabolites in Cannabis.
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Affiliation(s)
- Carni Lipson Feder
- The Laboratory of Cancer Biology and Cannabinoid Research, Faculty of Biology, Technion-Israel Institute of Technology, Haifa, Israel
| | - Oded Cohen
- Agricultural Research Organization (ARO), Volcani Center, Institute of Plant Sciences, Rishon LeZion, Israel
| | - Anna Shapira
- The Laboratory of Cancer Biology and Cannabinoid Research, Faculty of Biology, Technion-Israel Institute of Technology, Haifa, Israel
| | - Itay Katzir
- Agricultural Research Organization (ARO), Volcani Center, Institute of Plant Sciences, Rishon LeZion, Israel
| | - Reut Peer
- Agricultural Research Organization (ARO), Volcani Center, Institute of Plant Sciences, Rishon LeZion, Israel
| | - Ohad Guberman
- The Laboratory of Cancer Biology and Cannabinoid Research, Faculty of Biology, Technion-Israel Institute of Technology, Haifa, Israel
| | - Shiri Procaccia
- The Laboratory of Cancer Biology and Cannabinoid Research, Faculty of Biology, Technion-Israel Institute of Technology, Haifa, Israel
| | - Paula Berman
- The Laboratory of Cancer Biology and Cannabinoid Research, Faculty of Biology, Technion-Israel Institute of Technology, Haifa, Israel
| | - Moshe Flaishman
- Agricultural Research Organization (ARO), Volcani Center, Institute of Plant Sciences, Rishon LeZion, Israel
| | - David Meiri
- The Laboratory of Cancer Biology and Cannabinoid Research, Faculty of Biology, Technion-Israel Institute of Technology, Haifa, Israel
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Hildrum JM, Fjeld B, Risahagen SM, Bernatek BJ, Klingenberg O. Assessment of Hemoglobin A2 stability at room temperature during 24 or 25 days as measured by high pressure liquid chromatography and capillary electrophoresis. Int J Lab Hematol 2021; 43:e266-e270. [PMID: 33960673 DOI: 10.1111/ijlh.13555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 04/02/2021] [Indexed: 11/29/2022]
Affiliation(s)
| | - Bente Fjeld
- Institute of Clinical Medicine, University of Oslo, Norway.,Department of Medical Biochemistry, Oslo University Hospital, Norway
| | | | | | - Olav Klingenberg
- Institute of Clinical Medicine, University of Oslo, Norway.,Department of Medical Biochemistry, Oslo University Hospital, Norway
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Bharatiya R, Chagraoui A, De Deurwaerdere S, Argiolas A, Melis MR, Sanna F, De Deurwaerdere P. Chronic Administration of Fipronil Heterogeneously Alters the Neurochemistry of Monoaminergic Systems in the Rat Brain. Int J Mol Sci 2020; 21:ijms21165711. [PMID: 32784929 PMCID: PMC7461054 DOI: 10.3390/ijms21165711] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 08/06/2020] [Accepted: 08/06/2020] [Indexed: 12/19/2022] Open
Abstract
Fipronil (FPN), a widely used pesticide for agricultural and non-agricultural pest control, is possibly neurotoxic for mammals. Brain monoaminergic systems, involved in virtually all brain functions, have been shown to be sensitive to numerous pesticides. Here, we addressed the hypothesis that chronic exposure to FPN could modify brain monoamine neurochemistry. FPN (10 mg/kg) was chronically administered for 21 days through oral gavage in rats. Thereafter, the tissue concentrations of dopamine (DA) and its metabolites, 3,4-dihydroxyphenylacetic acid (DOPAC) and homovanillic acid; serotonin (5-HT) and its metabolite, 5-hydroxyindoleacetic acid (5-HIAA); and noradrenaline (NA) were measured in 30 distinct brain regions. FPN significantly decreased DA and its metabolite levels in most striatal territories, including the nucleus accumbens and the substantia nigra (SN). FPN also diminished 5-HT levels in some striatal regions and the SN. The indirect index of the turnovers, DOPAC/DA and 5-HIAA/5-HT ratios, was increased in numerous brain regions. FPN reduced the NA content only in the nucleus accumbens core. Using the Bravais–Pearson test to study the neurochemical organization of monoamines through multiple correlative analyses across the brain, we found fewer correlations for NA, DOPAC/DA, and 5-HIAA/5-HT ratios, and an altered pattern of correlations within and between monoamine systems. We therefore conclude that the chronic administration of FPN in rats induces massive and inhomogeneous changes in the DA and 5-HT systems in the brain.
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Affiliation(s)
- Rahul Bharatiya
- Department of Biomedical Sciences, Section of Neuroscience and Clinical Pharmacology, University of Cagliari, 09100 Cagliari, Italy; (R.B.); (A.A.); (M.R.M.)
- Centre National de la Recherche Scientifique (Unité Mixte de Recherche 5287), 146 rue Léo Saignat, B.P.281, F-33000 Bordeaux CEDEX, France;
| | - Abdeslam Chagraoui
- Neuronal and Neuroendocrine Differentiation and Communication Laboratory, Institute for Research and Innovation in Biomedicine of Normandy (IRIB), Normandie Univ, UNIROUEN, INSERM, U1239, CHU Rouen, 76000 Rouen, France;
- Department of Medical Biochemistry, Rouen University Hospital, 76000 Rouen, France
| | - Salomé De Deurwaerdere
- Centre National de la Recherche Scientifique (Unité Mixte de Recherche 5287), 146 rue Léo Saignat, B.P.281, F-33000 Bordeaux CEDEX, France;
| | - Antonio Argiolas
- Department of Biomedical Sciences, Section of Neuroscience and Clinical Pharmacology, University of Cagliari, 09100 Cagliari, Italy; (R.B.); (A.A.); (M.R.M.)
- Centre of Excellence for the Neurobiology of Addictions, University of Cagliari, 09100 Cagliari, Italy
- Institute of Neuroscience, National Research Council, Cagliari Section, University of Cagliari, 09100 Cagliari, Italy
| | - Maria Rosaria Melis
- Department of Biomedical Sciences, Section of Neuroscience and Clinical Pharmacology, University of Cagliari, 09100 Cagliari, Italy; (R.B.); (A.A.); (M.R.M.)
- Centre of Excellence for the Neurobiology of Addictions, University of Cagliari, 09100 Cagliari, Italy
| | - Fabrizio Sanna
- Department of Biomedical Sciences, Section of Neuroscience and Clinical Pharmacology, University of Cagliari, 09100 Cagliari, Italy; (R.B.); (A.A.); (M.R.M.)
- Correspondence: (F.S.); (P.D.D.); Tel.: +39-070-675-4330 (F.S.); +33-557-571-290 (P.D.D.)
| | - Philippe De Deurwaerdere
- Centre National de la Recherche Scientifique (Unité Mixte de Recherche 5287), 146 rue Léo Saignat, B.P.281, F-33000 Bordeaux CEDEX, France;
- Correspondence: (F.S.); (P.D.D.); Tel.: +39-070-675-4330 (F.S.); +33-557-571-290 (P.D.D.)
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9
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Eitaki Y, Nakano M, Kawai T, Omae K, Takebayashi T. Biological monitoring of o-toluidine in urine pretreated by an enzymatic deconjugation method. J Occup Health 2019; 61:349-357. [PMID: 31002462 PMCID: PMC6718832 DOI: 10.1002/1348-9585.12058] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 03/12/2019] [Accepted: 04/02/2019] [Indexed: 11/08/2022] Open
Abstract
OBJECTIVES To establish an enzymatic deconjugation method to separately quantify urinary o-toluidine (OT), its six metabolites, another six chemicals present in an OT-processing plant, and one metabolite of p-toluidine, and to propose optimal urinary biological monitoring items of OT exposure. METHODS Thirty-six urine samples of an OT-processing plant's workers were obtained and pretreated by an enzymatic deconjugation method employing β-glucuronidase/arylsulfatase for 3 hours at 37°C and measured by liquid chromatograph-mass spectrometry (LC-MS). An alkaline hydrolytic pretreatment and 1-chlorobutane extraction procedure was also examined as a widely used urinary OT measurement method. RESULTS The 14 chemicals were separated by LC-MS condition set by us and 13 chemicals other than 2-chloroaniline showed satisfiable linearity and limits of determination. Standard substances of six OT metabolites decomposed after the alkaline heating. In the 36 urine samples, OT, N-(4-hydroxy-2-methylphenyl) acetamide (NHM), and 4-amino-m-cresol (ACR) accounted for approx. 90% of the total OT and OT metabolites, but inter-individual variation of the three substance excretion seemed to be wide. Time course of urinary excretion revealed that concentration of the three substances was higher 24 hours after the work shift's end rather than just after the work shift. CONCLUSIONS OT and its six metabolites can each be determined with LC-MS. The alkaline method is not so optimal for exact biological monitoring. Rather, the sum of urinary OT, NHM, and ACR measured by the enzymatic method is a better index, and "end of the workweek" is a good urine-sampling time for the biological monitoring of OT exposure.
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Affiliation(s)
- Yoko Eitaki
- Department of Preventive Medicine and Public HealthKeio University School of MedicineTokyoJapan
| | - Makiko Nakano
- Department of Preventive Medicine and Public HealthKeio University School of MedicineTokyoJapan
| | - Toshio Kawai
- Kansai Occupational Health Technical CenterOsakaJapan
| | - Kazuyuki Omae
- Department of Preventive Medicine and Public HealthKeio University School of MedicineTokyoJapan
| | - Toru Takebayashi
- Department of Preventive Medicine and Public HealthKeio University School of MedicineTokyoJapan
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Zhang L, Zhao L, Liu Y, Liu J, Li X. Pharmacokinetics of tilmicosin in healthy pigs and in pigs experimentally infected with Haemophilus parasuis. J Vet Sci 2018; 18:431-437. [PMID: 28385011 PMCID: PMC5746435 DOI: 10.4142/jvs.2017.18.4.431] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 10/21/2016] [Revised: 12/10/2016] [Accepted: 02/07/2017] [Indexed: 11/20/2022] Open
Abstract
A comparative in vivo pharmacokinetic (PK) study of tilmicosin (TIL) was conducted in 6 crossbred healthy pigs and 6 crossbred pigs infected with Haemophilus (H.) parasuis following oral administration of a single 40 mg/kg dose. The infected model was established by intranasal inoculation and confirmed by clinical signs, blood biochemistry, and microscopic examinations. Plasma TIL concentrations were determined by a validated high-performance liquid chromatography method with ultraviolet detection at 285 nm. PK parameters were calculated by using WinNonlin software. After TIL administration, the main PK parameters of TIL in healthy and H. parasuis-infected pigs were as follows: Area under the concentration-time curve, maximal drug concentration, half-life of the absorption phase, half-life of the distribution phase, and half-life of the elimination phase were 34.86 ± 9.69 vs. 28.73 ± 6.18 μgㆍh/mL, 1.77 ± 0.33 vs. 1.67 ± 0.28 μg/mL, 2.27 ± 0.45 vs. 2.24 ± 0.44 h, 5.35 ± 1.40 vs. 4.61 ± 0.35 h, and 43.53 ± 8.17 vs. 42.05 ± 9.36 h, respectively. These results of this exploratory study suggest that there were no significant differences between the PK profiles of TIL in the healthy and H. parasuis-infected pigs.
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Affiliation(s)
- Ling Zhang
- College of Animal Science and Technology, Tarim University, Alar 843300, China.,Key Laboratory of Tarim Animal Husbandry Science and Technology of Xinjiang Production & Construction Corps, Alar 843300, China.,College of Animal Science & Technology, Shihezi University, Shihezi 832000, China
| | - Li Zhao
- College of Animal Science and Technology, Tarim University, Alar 843300, China.,Key Laboratory of Tarim Animal Husbandry Science and Technology of Xinjiang Production & Construction Corps, Alar 843300, China
| | - Yonghong Liu
- College of Animal Science and Technology, Tarim University, Alar 843300, China.,Key Laboratory of Tarim Animal Husbandry Science and Technology of Xinjiang Production & Construction Corps, Alar 843300, China
| | - Junfeng Liu
- Key Laboratory of Tarim Animal Husbandry Science and Technology of Xinjiang Production & Construction Corps, Alar 843300, China
| | - Xianqiang Li
- College of Animal Science and Technology, Tarim University, Alar 843300, China.,Key Laboratory of Tarim Animal Husbandry Science and Technology of Xinjiang Production & Construction Corps, Alar 843300, China
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11
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Gazioglu I, Tekkeli SEK. Development and validation of a HPLC method for the determination of benzo(a)pyrene in human breast milk. Food Sci Biotechnol 2017; 26:319-322. [PMID: 30263545 DOI: 10.1007/s10068-017-0043-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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: 09/09/2016] [Revised: 01/04/2017] [Accepted: 01/18/2017] [Indexed: 11/30/2022] Open
Abstract
A simple analytical procedure was developed for the quantitation of benzo(a)pyrene in human breast milk using solid phase extraction (SPE) combined with high performance liquid chromatography. Before the chromatographic process, SPE, including C18 functional groups in silicagel cartridges, was conducted for sample preparation. A C18 column (100×4.6 mm id, 3 μm particle size) was used with acetonitrile:water (80:20) as the mobile phase at a flow rate 1mL/min at 30°C. Fluorimetric detection was performed for excitation and emission at 290 and 406 nm, respectively. It was observed that the calibration curve was linear over the range of 0.5-80 ng/mL. The limit of detection and limit of quantitation were found to be 0.5 and 1.07 ng/mL, respectively. Intraday and interday relative standard deviation values were less than 5.15%. Moreover, the newly developed method provides a fast, simple, cost effective, and sensitive assay to detect an important carcinogen substance, benzo(a)pyrene, in human breast milk.
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Affiliation(s)
- Isil Gazioglu
- Faculty of Pharmacy, Department of Analytical Chemistry, Bezmialem Vakif University, 34093 Fatih-Istanbul, Turkey
| | - Serife Evrim Kepekci Tekkeli
- Faculty of Pharmacy, Department of Analytical Chemistry, Bezmialem Vakif University, 34093 Fatih-Istanbul, Turkey
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Alvarez RH, Natal FLN, Ribela MTCP, de Almeida BE, de Oliveira JE, Bartolini P. Physical-chemical and biological characterization of different preparations of equine chorionic gonadotropin. J Vet Sci 2017; 17:459-465. [PMID: 27297410 PMCID: PMC5204023 DOI: 10.4142/jvs.2016.17.4.459] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 09/25/2015] [Revised: 03/17/2016] [Accepted: 05/12/2016] [Indexed: 02/05/2023] Open
Abstract
Ovarian stimulation with commercial preparations of equine chorionic gonadotropin (eCG) produces extremely variable responses in domestic animals, ranging from excessive stimulation to practically no stimulation, when applied on the basis of their declared unitage. This study was conducted to analyze four commercial preparations from different manufacturers via reversed-phase HPLC (RP-HPLC) in comparison with a reference preparation and an official International Standard from the World Health Organization. The peaks obtained by this qualitative and quantitative physical–chemical analysis were compared using an in vivo bioassay based on the ovarian weight gain of prepubertal female rats. The RP-HPLC data showed one or two peaks close to a main peak (tR = 27.9 min), which were related to the in vivo bioactivity. Commercial preparations that have this altered peak showed very little or no in vivo activity, as demonstrated by rat ovarian weight and in peripubertal gilts induced to ovulate. Overall, these findings indicate that RP-HPLC can be a rapid and reliable tool to reveal changes in the physicochemical profile of commercial eCG that is apparently related to decreased biological activity of this hormone.
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Affiliation(s)
| | | | | | - Beatriz Elane de Almeida
- Biotechnology Department, IPEN-CNEN, Cidade Universitária Sao Paulo, 05508-000 São Paulo, Brazil
| | | | - Paolo Bartolini
- Biotechnology Department, IPEN-CNEN, Cidade Universitária Sao Paulo, 05508-000 São Paulo, Brazil
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Rissling O, Bauer S, Shipkova M, Glander P, Mai M, Hambach P, Budde K. Simultaneous determination of mycophenolate and its metabolite mycophenolate-7-o-glucuronide with an isocratic HPLC-UV-based method in human plasma and stability evaluation. Scand J Clin Lab Invest 2016; 76:612-619. [PMID: 27676419 DOI: 10.1080/00365513.2016.1230775] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVES Mycophenolic acid (MPA) is an immunosuppressive agent which is commonly used in a fixed dose regime in solid organ transplantation. For clinical trials and therapeutic drug monitoring measuring plasma concentrations is necessary. Also, stability issues have to be addressed. METHODS We describe an isocratic, RP-based HPLC-UV method for simultaneous determination of MPA and its major metabolite Mycophenolic acid 7-o Glucuronide (MPAG) in human plasma. Pre-analytics included protein precipitation with acetonitrile. The method was validated according to EMA/FDA guidelines. Patient lithium-heparin plasma and blood was used for evaluation of short-term (72 hours at room temperature = RT) and long-term stability (2 years at -80 °C) without acidification. RESULTS Linearity was assessed in the concentration range of 0.5-40.0 μg/mL for MPA and 5.0-350.0 μg/mL for MPAG, respectively. For MPA coefficient of variation was <7.0% (lower limit of quantification = LLOQ: 10.8%), for MPAG <9.6% (LLOQ: 10.6%). Bias ranged between -1.9 and +1.5% for MPA and for MPAG between -4.3 and -0.3%. The method showed agreement with a reference method for both analytes. MPA remained stable for 7 h (-1.6 to +8.4% change to the initial concentration) and MPAG for 24 h (-1.8 to -11.5% change) at RT in lithium heparin blood. After 2 years of storage at -80 °C MPA, MPAG concentrations and 95% CIs remained within ±15% of the initial value. CONCLUSION The presented assay is applicable for clinical studies. Blood samples were stable for 7 hours at RT and plasma for 2 years stored at -80 °C.
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Affiliation(s)
- Olesja Rissling
- a Department of Nephrology , Charité Universitätsmedizin , Berlin , Germany.,b Institute of Pharmacy, Freie Universitaet Berlin , Berlin , Germany
| | - Steffen Bauer
- c Institute of Medical Diagnostics , Berlin , Germany
| | - Maria Shipkova
- d Central Institute for Clinical Chemistry and Laboratory Medicine , Klinikum Stuttgart , Stuttgart , Germany
| | - Petra Glander
- a Department of Nephrology , Charité Universitätsmedizin , Berlin , Germany
| | - Marco Mai
- a Department of Nephrology , Charité Universitätsmedizin , Berlin , Germany
| | - Pia Hambach
- a Department of Nephrology , Charité Universitätsmedizin , Berlin , Germany
| | - Klemens Budde
- a Department of Nephrology , Charité Universitätsmedizin , Berlin , Germany
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Yubero D, Montero R, Ramos M, Neergheen V, Navas P, Artuch R, Hargreaves I. Determination of urinary coenzyme Q10 by HPLC with electrochemical detection: Reference values for a paediatric population. Biofactors 2015; 41:424-30. [PMID: 26768296 DOI: 10.1002/biof.1242] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 09/30/2015] [Accepted: 10/08/2015] [Indexed: 12/19/2022]
Abstract
Kidney dysfunction is being increasingly associated with mitochondrial diseases and coenzyme Q10 (CoQ) deficiency. The assessment of CoQ status requires the biochemical determination of CoQ in biological fluids and different cell types, but no methods have been developed as yet for the analysis of CoQ in excretory systems. The aim of this study was to standardize a new procedure for urinary CoQ determination and to establish reference values for a paediatric population. Urinary CoQ was analyzed by HPLC with electrochemical detection. Reference values (n = 43) were stratified into two age groups (2-10 years: range 24-109 nmol CoQ/gram of pellet protein; 11-17 years: range 43-139 nmol CoQ/gram of pellet protein). In conclusion, urinary CoQ analysis is a noninvasive, reliable, and reproducible method to determine urinary tract CoQ status.
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Affiliation(s)
- Dèlia Yubero
- Clinical Biochemistry Department, Institut d'Investigació Sanitària Sant Joan De Déu and CIBERER, Barcelona, Spain
| | - Raquel Montero
- Clinical Biochemistry Department, Institut d'Investigació Sanitària Sant Joan De Déu and CIBERER, Barcelona, Spain
| | - Maria Ramos
- Nephrology Department, Hospital Sant Joan De Déu, Barcelona, Spain
| | - Viruna Neergheen
- Neurometabolic Unit, National Hospital for Neurology and Neurosurgery, London, UK
| | - Plácido Navas
- Cellular Biology and Biotechnology Department, Centro Andaluz De Biología Del Desarrollo, Universidad Pablo De Olavide and CIBERER, Sevilla, Spain
| | - Rafael Artuch
- Clinical Biochemistry Department, Institut d'Investigació Sanitària Sant Joan De Déu and CIBERER, Barcelona, Spain
| | - Iain Hargreaves
- Neurometabolic Unit, National Hospital for Neurology and Neurosurgery, London, UK
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Kamal A, Gulfraz M, Anwar MA, Malik RN. Reverse phase high performance liquid chromatographic method development based on ultravioletvisible detector for the analysis of 1-hydroxypyrene (PAH biomarker) in human urine. Int J Occup Med Environ Health 2015; 28:399-403. [PMID: 26182935 DOI: 10.13075/ijomeh.1896.00325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
OBJECTIVES 1-hydroxypyrene is an important biomarker of exposure to polycyclic aromatic hydrocarbons (PAHs), which appears in the urine of exposed human subjects. In developing countries, where advanced instruments are not available, the importance of this biomarker demands convenient and sensitive methods for determination purposes. This study aimed at developing a methodology to quantify 1-hydroxypyrene (a biomarker of PAHs exposure) based on the UV-visible detector in the reverse phase high pressure liquid chromatography (HPLC). MATERIAL AND METHODS A 20 μl injection of sample was used for manual injection into the HPLC Shimadzu, equipped with the SPD-20 A UV-visible detector, the LC-20AT pump and the DGU-20A5 degasser. The C-18 column was used for the purpose of the analysis. RESULTS The method showed a good linearity (the range: R<sup>2</sup> = 0.979-0.989), and high detectability up to the nmol level. The average retention was 6.37, with the accuracy of 2%, and the percentage of recovery remained 108%. The overall performance of this method was comparable (in terms of detection sensitivity) and relatively better than previously reported studies using the HPLC system equipped with the UV-detector. CONCLUSIONS This method is suitable and reliable for the detection/quantification of the 1-OHP in human urine samples, using the UV-detector, however, it is less sensitive as compared to the results of a florescence detector.
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Affiliation(s)
- Atif Kamal
- Quaid-i-Azam University, Islamabad, Pakistan (Faculty of Biological Sciences, Department of Environmental Sciences, Environmental Biology and Ecotoxicology Laboratory)
| | - Mohammad Gulfraz
- Pir Mehr Ali Shah, Arid Agriculture University, Rawalpindi, Pakistan (Institute of Biochemistry)
| | - Mohammad Asad Anwar
- Pir Mehr Ali Shah, Arid Agriculture University, Rawalpindi, Pakistan (Institute of Biochemistry)
| | - Riffat Naseem Malik
- Quaid-i-Azam University, Islamabad, Pakistan (Faculty of Biological Sciences, Department of Environmental Sciences, Environmental Biology and Ecotoxicology Laboratory).
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Takada Y, Hirano M, Kiyonaka S, Ueda Y, Yamaguchi K, Nakahara K, Mori MX, Mori Y. Rab3 interacting molecule 3 mutations associated with autism alter regulation of voltage-dependent Ca²⁺ channels. Cell Calcium 2015; 58:296-306. [PMID: 26142343 DOI: 10.1016/j.ceca.2015.06.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [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: 04/06/2015] [Revised: 06/16/2015] [Accepted: 06/16/2015] [Indexed: 10/23/2022]
Abstract
Autism is a neurodevelopmental psychiatric disorder characterized by impaired reciprocal social interaction, disrupted communication, and restricted and stereotyped patterns of interests. Autism is known to have a strong genetic component. Although mutations in several genes account for only a small proportion of individuals with autism, they provide insight into potential biological mechanisms that underlie autism, such as dysfunction in Ca(2+) signaling, synaptic dysfunction, and abnormal brain connectivity. In autism patients, two mutations have been reported in the Rab3 interacting molecule 3 (RIM3) gene. We have previously demonstrated that RIM3 physically and functionally interacts with voltage-dependent Ca(2+) channels (VDCCs) expressed in neurons via the β subunits, and increases neurotransmitter release. Here, by introducing corresponding autism-associated mutations that replace glutamic acid residue 176 with alanine (E176A) and methionine residue 259 with valine (M259V) into the C2B domain of mouse RIM3, we demonstrate that both mutations partly cancel the suppressive RIM3 effect on voltage-dependent inactivation of Ba(2+) currents through P/Q-type CaV2.1 recombinantly expressed in HEK293 cells. In recombinant N-type CaV2.2 VDCCs, the attenuation of the suppressive RIM3 effect on voltage-dependent inactivation is conserved for M259V but not E176A. Slowing of activation speed of P/Q-type CaV2.1 currents by RIM3 is abolished in E176A, while the physical interaction between RIM3 and β subunits is significantly attenuated in M259V. Moreover, increases by RIM3 in depolarization-induced Ca(2+) influx and acetylcholine release are significantly attenuated by E176A in rat pheochromocytoma PC12 cells. Thus, our data raise the interesting possibility that autism phenotypes are elicited by synaptic dysfunction via altered regulation of presynaptic VDCC function and neurotransmitter release.
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Affiliation(s)
- Yoshinori Takada
- Laboratory of Molecular Biology, Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Mitsuru Hirano
- Laboratory of Molecular Biology, Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Shigeki Kiyonaka
- Laboratory of Molecular Biology, Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan; Laboratory of Environmental Systems Biology, Department of Technology and Ecology, Hall of Global Environmental Studies, Kyoto University, Kyoto 615-8510, Japan
| | - Yoshifumi Ueda
- Laboratory of Molecular Biology, Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Kazuma Yamaguchi
- Laboratory of Molecular Biology, Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Keiko Nakahara
- Laboratory of Molecular Biology, Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Masayuki X Mori
- Laboratory of Molecular Biology, Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Yasuo Mori
- Laboratory of Molecular Biology, Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan; Laboratory of Environmental Systems Biology, Department of Technology and Ecology, Hall of Global Environmental Studies, Kyoto University, Kyoto 615-8510, Japan.
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Piehler AP, Grimholt RM, Bjerner J, Buchmann MS. Interference of common haemoglobin variants with the Tosoh G7 standard mode HbA1c method. Scand J Clin Lab Invest 2015; 75:362-6. [PMID: 25858015 DOI: 10.3109/00365513.2015.1031687] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND HbA1c methods may be prone to interference by the presence of haemoglobin variants. In contrast to the variant mode of the HbA1c method on the Tosoh G7 instrument, the literature lacks investigations of haemoglobin variant interference with the standard mode. The current study sought to investigate whether different haemoglobin variants interfere with the Tosoh G7 standard mode HbA1c method, and whether present haemoglobin variants are identifiable on respective chromatograms. METHODS Samples routinely analyzed for HbA1c and suspected of having haemoglobin variants (N = 103) were included. HbA1c was measured on a Tosoh G7 in standard mode (Tosoh Corporation, Japan), and on the DCA Vantage (Siemens, Germany). Haemoglobin variants were identified using the VARIANT(™)β-Thalassemia Short Program (Bio-Rad Laboratories, Hercules, CA, USA) and by DNA sequencing. RESULTS The Tosoh G7 in standard mode measured significantly lower HbA1c results (between 1.0 and 2.5 percentage points absolute bias corresponding to between 11 and 27 mmol/mol, p < 0.001) in samples in which common haemoglobin variants (HbS, HbC, HbD or HbE) were present (n = 61). No significant difference in HbA1c (0.04 percentage points, p = 0.74) was found between Tosoh G7 standard mode and DCA Vantage in samples in which haemoglobin variants were absent (n = 36). In contrast to HbS and HbD, HbE and HbC trait could be identified on respective chromatograms. CONCLUSION The presence of common haemoglobin variants results in falsely low HbA1c measurements on the Tosoh G7 in standard mode. HbS and HbD trait are not identifiable on respective haemoglobin chromatograms.
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Rigane H, Chtourou M, Ben Mahmoud I, Medhioub K, Ammar E. Polyphenolic compounds progress during olive mill wastewater sludge and poultry manure co-composting, and humic substances building (Southeastern Tunisia). Waste Manag Res 2015; 33:73-80. [PMID: 25502693 DOI: 10.1177/0734242x14559594] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In Mediterranean areas, olive mill wastes pose a major environmental problem owing to their important production and their high polyphenolic compounds and organic acids concentrations. In this work, the evolution of polyphenolic compounds was studied during co-composting of olive mill wastewater sludge and poultry manure, based on qualitative (G-50 sephadex) and quantitative (Folin-Ciocalteu), as well as high pressure liquid chromatography analyses. Results showed a significant polyphenolic content decrease of 99% and a noticeable transformation of low to high molecular weight fraction during the compost maturation period. During this step, polyphenols disappearance suggested their assimilation by thermophilic bacteria as a carbon and energy source, and contributed to humic substances synthesis. Polyphenolic compounds, identified initially by high pressure liquid chromatography, disappeared by composting and only traces of caffeic, coumaric and ferulic acids were detected in the compost. In the soil, the produced compost application improved the chemical and physico-chemical soil properties, mainly fertilising elements such as calcium, magnesium, nitrogen, potassium and phosphorus. Consequently, a higher potato production was harvested in comparison with manure amendment.
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Affiliation(s)
- Hafedh Rigane
- University of Sfax, Research unit: Study and Management of Coastal and Urban Environments, Sfax, Tunisia Faculty of Sciences of Sfax, Sfax, Tunisia
| | - Mohamed Chtourou
- University of Sfax, Research unit: Study and Management of Coastal and Urban Environments, Sfax, Tunisia Faculty of Sciences of Sfax, Sfax, Tunisia
| | - Imen Ben Mahmoud
- University of Sfax, Research unit: Study and Management of Coastal and Urban Environments, Sfax, Tunisia Faculty of Sciences of Sfax, Sfax, Tunisia
| | - Khaled Medhioub
- University of Sfax, Research unit: Study and Management of Coastal and Urban Environments, Sfax, Tunisia Preparatory Institute of Engineering Studies of Sfax, Sfax, Tunisia
| | - Emna Ammar
- University of Sfax, Research unit: Study and Management of Coastal and Urban Environments, Sfax, Tunisia National Engineering School of Sfax, Sfax, Tunisia
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Winfred SB, Meiyazagan G, Panda JJ, Nagendrababu V, Deivanayagam K, Chauhan VS, Venkatraman G. Antimicrobial activity of cationic peptides in endodontic procedures. Eur J Dent 2014; 8:254-260. [PMID: 24966779 PMCID: PMC4054059 DOI: 10.4103/1305-7456.130626] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
OBJECTIVES The present study aimed to investigate the antimicrobial and biofilm inhibition activity of synthetic antimicrobial peptides (AMPs) against microbes such as Enterococcus faecalis, Staphylococcus aureus, and Candida albicans which are involved in endodontic infections. MATERIALS AND METHODS Agar diffusion test was done to determine the activity of peptides. The morphological changes in E. faecalis and reduction in biofilm formation after treatment with peptides were observed using scanning electron microscope. The efficacy of peptides using an ex vivo dentinal model was determined by polymerase chain reaction and confocal laser scanning microscopy. Platelet aggregation was done to determine the biocompatibility of peptides. RESULTS Among 11 peptides, two of the amphipathic cationic peptides were found to be highly active against E. faecalis, S. aureus, C. albicans. Efficacy results using dentinal tubule model showed significant reduction in microbial load at 400 μm depth. The peptides were also biocompatible. CONCLUSION These results suggest that synthetic AMPs have the potential to be developed as antibacterial agents against microorganisms involved in dental infections and thus could prevent the spread and persistence of endodontic infections improving treatment outcomes and teeth preservation.
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Affiliation(s)
- Sofi Beaula Winfred
- Department of Human Genetics, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, India
| | - Gowri Meiyazagan
- Department of Human Genetics, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, India
| | - Jiban J Panda
- Malaria Research Laboratory, International Center for Genetic Engineering and Biotechnology, New Delhi, India
| | - Venkateshbabu Nagendrababu
- Department of Conservative Dentistry, Faculty of Dental Science, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, India
| | - Kandaswamy Deivanayagam
- Department of Conservative Dentistry, Faculty of Dental Science, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, India
| | - Virander S Chauhan
- Malaria Research Laboratory, International Center for Genetic Engineering and Biotechnology, New Delhi, India
| | - Ganesh Venkatraman
- Department of Human Genetics, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, India
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Gurumurthy P, Borra SK, Yeruva RKR, Babu S, Thomas J, Cherian KM. Estimation of serum neopterin in patients with acute coronary syndrome. Asian Cardiovasc Thorac Ann 2014; 21:426-31. [PMID: 24570524 DOI: 10.1177/0218492312458511] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND The aim of our study was to determine neopterin levels in patients with acute coronary syndrome, in which the release of various cytokines activates the cellular immune system. There is an increase in the number and activity of T-cells in unstable atherosclerotic plaques, and of type 1 helper T-cells that produce interferon γ, which in turn produces neopterin, a byproduct of the guanosine triphosphate-biopterin pathway and a marker for activated macrophages. METHODS We studied 600 subjects consisting of healthy volunteers and patients with noncardiac chest pain, ST-segment elevation myocardial infarction, non-ST-segment elevation myocardial infarction, or unstable angina. Neopterin levels were determined by high-performance liquid chromatography. RESULTS Mean serum neopterin levels in ST-segment elevation myocardial infarction (11.5 ± 3.2 nmol·L(-1)), non-ST-segment elevation myocardial infarction (9.8 ± 2.9 nmol·L(-1)), and unstable angina patients (9.4 ± 2.3 nmol·L(-1)) were significantly higher than those in noncardiac chest pain patients (7.4 ± 1.9 nmol·L(-1)) and healthy volunteers (7.2 ± 0.6 nmol·L(-1); p < 0.001). CONCLUSION These findings suggest that serum neopterin levels may be a useful marker of systemic inflammation, and measurement of serum neopterin may be helpful in assessing the risk of developing coronary heart disease.
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Affiliation(s)
- Prema Gurumurthy
- Department of Biochemistry, Frontier Lifeline Hospital and Dr KM Cherian Heart Foundation, Chennai, Tamilnadu, India
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Calonne M, Fontaine J, Debiane D, Laruelle F, Grandmougin-Ferjani A, Lounès-Hadj Sahraoui A. The arbuscular mycorrhizal Rhizophagus irregularis activates storage lipid biosynthesis to cope with the benzo[a]pyrene oxidative stress. Phytochemistry 2014; 97:30-7. [PMID: 24246754 DOI: 10.1016/j.phytochem.2013.10.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 10/12/2013] [Accepted: 10/25/2013] [Indexed: 05/10/2023]
Abstract
The phytoremediation assisted by arbuscular mycorrhizal fungi (AMF) could constitute an ecological and economic method to restore polycyclic aromatic hydrocarbon (PAH) polluted soils. Unfortunately, little is known about the PAH impact on the beneficial symbiotic AMF. Using radiolabelling experiments, our work aims to understand how benzo[a]pyrene (B[a]P), a representative of high molecular weight PAH, acts on the AMF lipid metabolism. Our results showed decreases in the sterol precursors as well as in total phospholipid quantities, in link with the [1-(14)C]acetate incorporation decreases in these lipids. Interestingly, a concomitant increase of [1-(14)C]acetate incorporation by 29.5% into phosphatidylcholine with its content decrease in Rhizophagus irregularis extraradical mycelium was observed, suggesting a membrane regeneration. A second concomitant increase (estimated to 69%) of [1-(14)C]acetate incorporation into triacylglycerols (TAG) with the content decrease was also observed. This suggests a fungal TAG biosynthesis activation probably to offset the decrease in storage lipid content when the fungus was grown under B[a]P pollution. In addition, our findings showed that lipase activity was induced by more than 3 fold in the presence of B[a]P in comparison to the control indicating that the drop in TAG content could be a consequence of their active degradation. Taken together, our data suggest the involvement of the fungal TAG metabolism to cope B[a]P toxicity through two means: (i) by providing carbon skeletons and energy necessary for membrane regeneration and/or for B[a]P translocation and degradation as well as (ii) by activating the phosphatidic acid and hexose metabolisms which may be involved in cellular stress defence.
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Affiliation(s)
- Maryline Calonne
- Univ Lille Nord de France, F-59000 Lille, France; Université du Littoral Côte d'Opale, Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), 50, rue Ferdinand Buisson, F-62228 Calais, France
| | - Joël Fontaine
- Univ Lille Nord de France, F-59000 Lille, France; Université du Littoral Côte d'Opale, Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), 50, rue Ferdinand Buisson, F-62228 Calais, France
| | - Djouher Debiane
- Univ Lille Nord de France, F-59000 Lille, France; Université du Littoral Côte d'Opale, Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), 50, rue Ferdinand Buisson, F-62228 Calais, France
| | - Frédéric Laruelle
- Univ Lille Nord de France, F-59000 Lille, France; Université du Littoral Côte d'Opale, Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), 50, rue Ferdinand Buisson, F-62228 Calais, France
| | - Anne Grandmougin-Ferjani
- Univ Lille Nord de France, F-59000 Lille, France; Université du Littoral Côte d'Opale, Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), 50, rue Ferdinand Buisson, F-62228 Calais, France
| | - Anissa Lounès-Hadj Sahraoui
- Univ Lille Nord de France, F-59000 Lille, France; Université du Littoral Côte d'Opale, Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), 50, rue Ferdinand Buisson, F-62228 Calais, France.
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Righard L, Carlsson-Jonsson A, Nyberg F. Enhanced levels of immunoreactive β-casomorphin-8 in milk of breastfeeding women with mastitis. Peptides 2014; 51:54-8. [PMID: 24189037 DOI: 10.1016/j.peptides.2013.10.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 10/25/2013] [Accepted: 10/25/2013] [Indexed: 10/26/2022]
Abstract
An incorrect, superficial suckling technique in breastfeeding frequently leads to milk congestion and sometimes mastitis. In the present study we have examined whether milk congestion may affect levels of the atypical opioid β-casomorphin-8 in milk and in plasma. We also investigated whether the rate of acute psychosis during the first half year after parturition has declined in Sweden over the years. Milk and plasma samples were collected for peptide analysis from 14 women with mastitis and 10 controls. We found that in a group of 14 late cases of mastitis (median 48 days post partum) the detected mean level of β-casomorphin-8 in milk was significantly higher and somewhat higher in plasma at the acute stage compared with 2-3 weeks later, after recovery when the symptoms had disappeared, as well as compared to the control subjects. Swedish official statistics show that the incidence of acute psychosis in the first month and in the first half year after birth has declined by a half during the last 30 years. A relationship between postpartum psychosis and elevated β-casomorphin-8 levels in CSF has been suggested from earlier studies. In this study, milk congestion led to enhanced levels of β-casomorphin-8 in milk, which may be related to postpartum psychosis and probably also to 'the postnatal blues'.
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Affiliation(s)
- Lennart Righard
- Department of Paediatrics, University Hospital, Malmö, University of Lund, Lund, Sweden
| | | | - Fred Nyberg
- Department of Pharmaceutical Biosciences, Uppsala University, Uppsala, Sweden.
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Park YC, Jin M, Kim SH, Kim MH, Namgung U, Yeo Y. Effects of inhalable microparticle of flower of Lonicera japonica in a mouse model of COPD. J Ethnopharmacol 2013; 151:123-130. [PMID: 24211495 DOI: 10.1016/j.jep.2013.10.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 09/14/2013] [Accepted: 10/03/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Flower of Lonicera japonica (FLJ) is a traditional herbal medicine widely used in East Asia as an anti-inflammatory and anti-oxidative agent. The purpose of this study is to develop an inhalable powder formulation of FLJ and to evaluate its biological effects in a mouse model of chronic obstructive pulmonary disease (COPD). METHODS Inhalable dry powder containing FLJ was produced by spray-drying with leucine as an excipient. Its aerodynamic properties and anti-inflammatory activities were evaluated using the Anderson cascade impactor (ACI) and a mouse model of COPD, respectively. RESULTS FLJ microparticle (FLJmp) had a hollow spherical shape in electron microscopy and showed aerodynamic properties suitable for inhalation (fine particle fraction of 54.0 ± 4.68% and mass median aerodynamic diameter of 4.6 ± 0.34μm). FLJmp decreased TNF-α and IL-6 expression in RAW264.7 cells activated by lipopolysaccharide (LPS). In mice challenged with LPS and cigarette smoke solution (CSS) to develop COPD, FLJmp decreased the levels of TNF-α and IL-6 in bronchoalveolar fluidas well as the number of inflammatory cells including neutrophils in peripheral blood. In addition, FLJmp induced recovery of elastin and collagen distribution, reduction of caspase-3 expression in lung tissues of COPD mice. CONCLUSIONS Inhalational delivery of FLJ using a microparticle system is a promising strategy for the treatment of COPD.
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Affiliation(s)
- Yang-Chun Park
- College of Oriental Medicine, Daejeon University, 96-3 Yongwun-dong, Daejeon 300-716, South Korea; East-West Biological Science Institute, Daejeon University, 96-3 Yongwun-dong, Daejeon 300-716, South Korea
| | - Mirim Jin
- College of Oriental Medicine, Daejeon University, 96-3 Yongwun-dong, Daejeon 300-716, South Korea; East-West Biological Science Institute, Daejeon University, 96-3 Yongwun-dong, Daejeon 300-716, South Korea
| | - Seung-Hyung Kim
- College of Oriental Medicine, Daejeon University, 96-3 Yongwun-dong, Daejeon 300-716, South Korea; East-West Biological Science Institute, Daejeon University, 96-3 Yongwun-dong, Daejeon 300-716, South Korea
| | - Min-Hee Kim
- College of Oriental Medicine, Daejeon University, 96-3 Yongwun-dong, Daejeon 300-716, South Korea; East-West Biological Science Institute, Daejeon University, 96-3 Yongwun-dong, Daejeon 300-716, South Korea
| | - Uk Namgung
- College of Oriental Medicine, Daejeon University, 96-3 Yongwun-dong, Daejeon 300-716, South Korea; East-West Biological Science Institute, Daejeon University, 96-3 Yongwun-dong, Daejeon 300-716, South Korea
| | - Yoon Yeo
- College of Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA; Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA.
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Reid PM, Divers SL, Zadmajid V, Alqaisi KM, Lokman PM. Steroidogenic acute regulatory protein transcript abundance in the eel, Anguilla australis: changes during the induced reproductive cycle and effects of follicle-stimulating hormone during previtellogenesis. J Steroid Biochem Mol Biol 2013; 138:464-70. [PMID: 23403152 DOI: 10.1016/j.jsbmb.2013.02.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2012] [Revised: 01/30/2013] [Accepted: 02/03/2013] [Indexed: 11/21/2022]
Abstract
Steroidogenic acute regulatory protein (StAR) mRNA levels in the eel ovary were assayed by quantitative PCR and related to plasma steroid levels throughout oogenesis in order to shed light on the previously considered 'aberrant' prematurational increase in plasma levels of estradiol-17β (E2). Total ovarian StAR transcript abundance mirrored circulating levels of E2, but not of 11-ketotestosterone (11KT). The study was complemented by evaluation of in vitro effects of follicle-stimulating hormone (FSH) on ovarian StAR transcript abundance and on short-term ('acute') radiolabelled pregnenolone-supported steroid metabolism by ovarian fragments to understand how the production of steroids during previtellogenic oocyte growth is regulated. We observed a significant effect of FSH on StAR mRNA levels within 24h of incubation, but these were no longer evident by 4 days of culture. Unexpectedly, FSH had no effect on substrate-supported steroidogenesis, as comparable yields of steroid products were detected using semi-quantitative HPLC and scintillation counting. We conclude that the eel ovarian follicle can respond to FSH from a very early stage of development (early oil droplet stage) by increasing StAR mRNA levels, but that there is no evidence for acute effects of FSH on bioactive steroid production downstream of cytochrome P450 side-chain cleavage. Furthermore, the prematurational increase in StAR mRNA in vivo is in keeping with general teleost models and is likely to be a 'normal' response to reaching advanced stages of development.
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Affiliation(s)
- Peter M Reid
- Department of Zoology, University of Otago, 340 Great King Street, Dunedin 9016, New Zealand
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Lippi G, Mercadanti M, Alberta C, Franchini M. An unusual case of a spurious, transfusion-acquired haemoglobin S. Blood Transfus 2010; 8:199-202. [PMID: 20671882 DOI: 10.2450/2010.0148-09] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Subscribe] [Scholar Register] [Received: 11/19/2009] [Revised: 01/28/2010] [Indexed: 11/21/2022]
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