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Veras BOD, Felix RF, Moura GMDM, Navarro DMDAF, Aguiar JCRDOFD, Wanderley AG, Silva MVD, Correia MTDS. Essential oil of Eugenia stictopetala Mart. ex DC. has antioxidant, antibacterial, and gastrointestinal protective effect. Nat Prod Res 2024:1-5. [PMID: 38635349 DOI: 10.1080/14786419.2024.2342556] [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: 05/10/2023] [Accepted: 04/05/2024] [Indexed: 04/20/2024]
Abstract
This work aimed to investigate the chemical composition, antioxidant capacity, antibacterial activity, and intestinal and gastric protective effects, in addition to the acute toxicity of the essential oil of E. stictopetala (EOEs). (E)-caryophyllene (18.01%), β-pinene (8.84%), and (E)-nerolidol (8.24%), were the components found in higher content in the essential oil. The EOEs showed antioxidant capacity with IC50 values ranging from 220.28 to 283.67 μg/mL, in addition to presenting antibacterial activity against Escherichia coli, Enterobacter aerogenes, Vibrio cholerae, Salmonella enterica, and Listeria monocytogenes. The essential oil showed a gastroprotective effect, with a reduction in the levels of TNF-α, IL-1β, and IL-6, having multiple pharmacological mechanisms of action. An antidiarrheal effect of EOEs was observed in the castor oil-induced diarrheal model, with reduced intestinal motility. Our findings demonstrate that essential oil can be beneficial in pharmaceutical and therapeutic applications for treating gastrointestinal diseases.
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Affiliation(s)
- Bruno Oliveira de Veras
- Post-graduation in Biotechnology - RENORBIO, Federal University of Pernambuco, Recife, Pernambuco, Brazil
- Department of Biochemistry, Laboratory of Natural Products, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Rianne Ferreira Felix
- Post-graduation in Biological Sciences, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Geovanna Maria de Medeiros Moura
- Department of Biochemistry, Laboratory Chemistry and Function of Bioactive Proteins, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | | | | | - Almir Gonçalves Wanderley
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, Diadema, São Paulo, Brazil
| | - Márcia Vanusa da Silva
- Department of Biochemistry, Laboratory of Natural Products, Federal University of Pernambuco, Recife, Pernambuco, Brazil
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de Veras BO, Moura GMDM, Barros AVD, Vanusa da Silva M, Assis PACD, Aguiar JCRDOFD, Navarro DMDAF, Ximenes RM, Wanderley AG, Oliveira MBMD, Lopes ACDS. Antinociceptive and anti-inflammatory activities of essential oil of the leaves of Amburana cearensis (Allemão) A.C. Smith. from the semi-arid region of Northeastern Brazil. J Ethnopharmacol 2023; 317:116858. [PMID: 37400005 DOI: 10.1016/j.jep.2023.116858] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/19/2023] [Accepted: 06/26/2023] [Indexed: 07/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Amburana cearensis (Allemão) A.C. Smith is a medicinal plant with wide distribution in South America, popularly known in Brazil as "cumaru" or "amburana de cheiro". In folk medicine, in the semi-arid region of Northeastern Brazil, infusions, teas and decoctions of leaves of Amburana cearensis have their practical use for treating fever, gastrointestinal disorders, inflammation, and inflammation pain. However, none of the ethnopharmacological properties has been scientifically evaluated using volatile compounds obtained from its leaves (essential oil). AIM OF THE STUDY This study investigated the chemical composition, acute oral toxicity, and antinociceptive and anti-inflammatory activities of the essential oil from the leaves of A. cearensis. MATERIAL AND METHODS The acute toxicity of the essential oil was investigated in mice. The antinociceptive effect was evaluated using the formalin test and, abdominal writhing induced by acetic acid, being investigated the possible mechanisms of action involved in antinociception. The acute anti-inflammatory effect was investigated through models of carrageenan-induced peritonitis, yeast-induced pyrexia, and carrageenan- and histamine-induced paw inflammation. RESULTS No acute toxicity was observed at doses up to 2000 mg/kg; p.o. The antinociceptive effect was statistically equal to morphine. In the formalin assay, the oil showed analgesic activity in the neurogenic and inflammatory phases, having as mechanisms the cholinergic, adenosinergic system, and ATP-sensitive potassium channels (K-ATP). In peritonitis, a reduction in TNF-α and IL-1β levels and leukocyte migration were observed. The antipyretic effect was statistically superior to dipyrone. The reduction in paw edema was statistically superior to the standard in both models. CONCLUSION The results obtained not only support the traditional use of the species in inflammatory conditions and pain in folk medicine but also demonstrate that this is a rich source of phytocomponents such as germacrone, which can be used as a natural and sustainable therapeutic agent with industrial applications.
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Affiliation(s)
- Bruno Oliveira de Veras
- Post-graduation in Tropical Medicine, Laboratory of Microbiology, Federal University of Pernambuco, 50670-420, Recife, Pernambuco, Brazil; Post-graduation in Biotechnology - RENORBIO, Federal University of Pernambuco, 50670-420, Recife, Pernambuco, Brazil; Department of Biochemistry, Laboratory of Natural Products, Federal University of Pernambuco, 50670-420, Recife, Pernambuco, Brazil.
| | - Geovanna Maria de Medeiros Moura
- Department of Biochemistry, Laboratory Chemistry and Function of Bioactive Proteins, Federal University of Rio Grande do Norte, 59078-970, Natal, Rio Grande do Norte, Brazil
| | - Amanda Vieira de Barros
- Department of Biochemistry, Laboratory of Natural Products, Federal University of Pernambuco, 50670-420, Recife, Pernambuco, Brazil
| | - Márcia Vanusa da Silva
- Department of Biochemistry, Laboratory of Natural Products, Federal University of Pernambuco, 50670-420, Recife, Pernambuco, Brazil
| | - Priscilla Anne Castro de Assis
- Department of Physiology and Pathology, Laboratory of Immunology and Cell Biology, Federal University of Paraiba, 58051-900, João Pessoa, Paraiba, Brazil
| | | | | | - Rafael Matos Ximenes
- Post-graduation in Biotechnology - RENORBIO, Federal University of Pernambuco, 50670-420, Recife, Pernambuco, Brazil
| | - Almir Gonçalves Wanderley
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, 09913-030, Diadema, São Paulo, Brazil
| | - Maria Betânia Melo de Oliveira
- Department of Biochemistry, Laboratory of Natural Products, Federal University of Pernambuco, 50670-420, Recife, Pernambuco, Brazil
| | - Ana Catarina de Sousa Lopes
- Post-graduation in Tropical Medicine, Laboratory of Microbiology, Federal University of Pernambuco, 50670-420, Recife, Pernambuco, Brazil
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Tallo FS, de Santana PO, Pinto SAG, Lima RY, de Araújo EA, Tavares JGP, Pires-Oliveira M, Nicolau LAD, Medeiros JVR, Taha MO, David AI, Luna-Filho B, Filho CEB, Barbosa AHP, Silva CMC, Wanderley AG, Caixeta A, Caricati-Neto A, Menezes-Rodrigues FS. Pharmacological Modulation of the Ca 2+/cAMP/Adenosine Signaling in Cardiac Cells as a New Cardioprotective Strategy to Reduce Severe Arrhythmias in Myocardial Infarction. Pharmaceuticals (Basel) 2023; 16:1473. [PMID: 37895945 PMCID: PMC10610028 DOI: 10.3390/ph16101473] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 10/09/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023] Open
Abstract
Acute myocardial infarction (AMI) is the main cause of morbidity and mortality worldwide and is characterized by severe and fatal arrhythmias induced by cardiac ischemia/reperfusion (CIR). However, the molecular mechanisms involved in these arrhythmias are still little understood. To investigate the cardioprotective role of the cardiac Ca2+/cAMP/adenosine signaling pathway in AMI, L-type Ca2+ channels (LTCC) were blocked with either nifedipine (NIF) or verapamil (VER), with or without A1-adenosine (ADO), receptors (A1R), antagonist (DPCPX), or cAMP efflux blocker probenecid (PROB), and the incidence of ventricular arrhythmias (VA), atrioventricular block (AVB), and lethality (LET) induced by CIR in rats was evaluated. VA, AVB and LET incidences were evaluated by ECG analysis and compared between control (CIR group) and intravenously treated 5 min before CIR with NIF 1, 10, and 30 mg/kg and VER 1 mg/kg in the presence or absence of PROB 100 mg/kg or DPCPX 100 µg/kg. The serum levels of cardiac injury biomarkers total creatine kinase (CK) and CK-MB were quantified. Both NIF and VER treatment were able to attenuate cardiac arrhythmias caused by CIR; however, these antiarrhythmic effects were abolished by pretreatment with PROB and DPCPX. The total serum CK and CK-MB were similar in all groups. These results indicate that the pharmacological modulation of Ca2+/cAMP/ADO in cardiac cells by means of attenuation of Ca2+ influx via LTCC and the activation of A1R by endogenous ADO could be a promising therapeutic strategy to reduce the incidence of severe and fatal arrhythmias caused by AMI in humans.
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Affiliation(s)
- Fernando Sabia Tallo
- Department of Urgency and Emergency Care, Universidade Federal de São Paulo (UNIFESP), São Paulo 04024-000, SP, Brazil
| | - Patricia Oliveira de Santana
- Postgraduate Program in Cardiology, Universidade Federal de São Paulo (UNIFESP), São Paulo 04024-000, SP, Brazil; (P.O.d.S.); (S.A.G.P.); (R.Y.L.); (E.A.d.A.); (B.L.-F.); (C.E.B.F.); (A.H.P.B.); (C.M.C.S.); (A.C.)
| | - Sandra Augusta Gordinho Pinto
- Postgraduate Program in Cardiology, Universidade Federal de São Paulo (UNIFESP), São Paulo 04024-000, SP, Brazil; (P.O.d.S.); (S.A.G.P.); (R.Y.L.); (E.A.d.A.); (B.L.-F.); (C.E.B.F.); (A.H.P.B.); (C.M.C.S.); (A.C.)
| | - Rildo Yamaguti Lima
- Postgraduate Program in Cardiology, Universidade Federal de São Paulo (UNIFESP), São Paulo 04024-000, SP, Brazil; (P.O.d.S.); (S.A.G.P.); (R.Y.L.); (E.A.d.A.); (B.L.-F.); (C.E.B.F.); (A.H.P.B.); (C.M.C.S.); (A.C.)
| | - Erisvaldo Amarante de Araújo
- Postgraduate Program in Cardiology, Universidade Federal de São Paulo (UNIFESP), São Paulo 04024-000, SP, Brazil; (P.O.d.S.); (S.A.G.P.); (R.Y.L.); (E.A.d.A.); (B.L.-F.); (C.E.B.F.); (A.H.P.B.); (C.M.C.S.); (A.C.)
| | - José Gustavo Padrão Tavares
- Department of Pharmacology, Universidade Federal de São Paulo (UNIFESP), São Paulo 04023-062, SP, Brazil; (J.G.P.T.); (A.C.-N.)
| | - Marcelo Pires-Oliveira
- União Metropolitana de Educação e Cultura—School of Medicine (UNIME), Lauro de Freitas 42700-000, BA, Brazil;
| | - Lucas Antonio Duarte Nicolau
- Department of Biotechnology, Universidade Federal do Delta do Parnaíba (UFDPar), Parnaíba 64202-020, PI, Brazil; (L.A.D.N.); (J.V.R.M.)
| | - Jand Venes Rolim Medeiros
- Department of Biotechnology, Universidade Federal do Delta do Parnaíba (UFDPar), Parnaíba 64202-020, PI, Brazil; (L.A.D.N.); (J.V.R.M.)
| | - Murched Omar Taha
- Department of Surgery, Universidade Federal de São Paulo (UNIFESP), São Paulo 04023-900, SP, Brazil; (M.O.T.); (A.I.D.)
| | - André Ibrahim David
- Department of Surgery, Universidade Federal de São Paulo (UNIFESP), São Paulo 04023-900, SP, Brazil; (M.O.T.); (A.I.D.)
| | - Bráulio Luna-Filho
- Postgraduate Program in Cardiology, Universidade Federal de São Paulo (UNIFESP), São Paulo 04024-000, SP, Brazil; (P.O.d.S.); (S.A.G.P.); (R.Y.L.); (E.A.d.A.); (B.L.-F.); (C.E.B.F.); (A.H.P.B.); (C.M.C.S.); (A.C.)
| | - Carlos Eduardo Braga Filho
- Postgraduate Program in Cardiology, Universidade Federal de São Paulo (UNIFESP), São Paulo 04024-000, SP, Brazil; (P.O.d.S.); (S.A.G.P.); (R.Y.L.); (E.A.d.A.); (B.L.-F.); (C.E.B.F.); (A.H.P.B.); (C.M.C.S.); (A.C.)
| | - Adriano Henrique Pereira Barbosa
- Postgraduate Program in Cardiology, Universidade Federal de São Paulo (UNIFESP), São Paulo 04024-000, SP, Brazil; (P.O.d.S.); (S.A.G.P.); (R.Y.L.); (E.A.d.A.); (B.L.-F.); (C.E.B.F.); (A.H.P.B.); (C.M.C.S.); (A.C.)
| | - Célia Maria Camelo Silva
- Postgraduate Program in Cardiology, Universidade Federal de São Paulo (UNIFESP), São Paulo 04024-000, SP, Brazil; (P.O.d.S.); (S.A.G.P.); (R.Y.L.); (E.A.d.A.); (B.L.-F.); (C.E.B.F.); (A.H.P.B.); (C.M.C.S.); (A.C.)
| | - Almir Gonçalves Wanderley
- Department of Pharmaceutical Sciences, Universidade Federal de São Paulo (UNIFESP), Diadema 09913-030, SP, Brazil;
| | - Adriano Caixeta
- Postgraduate Program in Cardiology, Universidade Federal de São Paulo (UNIFESP), São Paulo 04024-000, SP, Brazil; (P.O.d.S.); (S.A.G.P.); (R.Y.L.); (E.A.d.A.); (B.L.-F.); (C.E.B.F.); (A.H.P.B.); (C.M.C.S.); (A.C.)
| | - Afonso Caricati-Neto
- Department of Pharmacology, Universidade Federal de São Paulo (UNIFESP), São Paulo 04023-062, SP, Brazil; (J.G.P.T.); (A.C.-N.)
| | - Francisco Sandro Menezes-Rodrigues
- Postgraduate Program in Cardiology, Universidade Federal de São Paulo (UNIFESP), São Paulo 04024-000, SP, Brazil; (P.O.d.S.); (S.A.G.P.); (R.Y.L.); (E.A.d.A.); (B.L.-F.); (C.E.B.F.); (A.H.P.B.); (C.M.C.S.); (A.C.)
- Department of Surgery, Universidade Federal de São Paulo (UNIFESP), São Paulo 04023-900, SP, Brazil; (M.O.T.); (A.I.D.)
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Fontes GG, Freitas RDB, Almeida PP, Lima LM, Cardoso SA, Pizziolo VR, Tabach R, Wanderley AG, Arida RM, Caricati-Neto A, Taha MO, de Carvalho CA, Tallo FS, Menezes-Rodrigues FS. Effects of Calendula officinalis extract on liver histopathology, lipid profile, and oxidative stress in rats submitted to a diet rich in cholesterol and carbohydrates. Acta Cir Bras 2023; 38:e383723. [PMID: 37851782 PMCID: PMC10578091 DOI: 10.1590/acb383723] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 07/23/2023] [Indexed: 10/20/2023] Open
Abstract
PURPOSE To evaluate the modulatory properties of Calendula officinalis L. (Asteraceae) (C. officinalis) extract on cafeteria diet-fed rats. METHODS A cafeteria diet was administered ad libitum for 45 days to induce dyslipidemia. Then, the rats were treated with the formulations containing C. officinalis in the doses of 50, 100, and 150 mg/kg or only with the vehicle formulation; the control group received a commercial ration. RESULTS The cafeteria diet decreased glutathione S-transferase activity and high-density lipoprotein plasmatic levels and damaged the hepatic architecture. The C. officinalis extract was able to reduce lipid infiltration in liver tissue and to modulate oxidative stress and lipid profile markers. CONCLUSIONS The correlations between the variables suggest a pathological connection between oxidative stress markers and serum lipid profile.
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Affiliation(s)
| | | | | | | | | | | | - Ricardo Tabach
- Universidade Federal de São Paulo – São Paulo (SP) – Brazil
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Rodrigues NER, Oliveira ARDS, Lima SMDA, Nunes DM, de Albuquerque PBS, da Cunha MDGC, Wanderley AG, Júnior FMRDS, Silva JBNF, Teixeira ÁAC, da Silva TG. Effect of the Aqueous Extract of Chrysobalanus icaco Leaves on Maternal Reproductive Outcomes and Fetal Development in Wistar Rats. Curr Issues Mol Biol 2023; 45:7617-7629. [PMID: 37754263 PMCID: PMC10529352 DOI: 10.3390/cimb45090479] [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: 08/25/2023] [Revised: 09/08/2023] [Accepted: 09/15/2023] [Indexed: 09/28/2023] Open
Abstract
Toxicological studies on medicinal plants are essential to ensure their safety and effectiveness in treating various diseases. Despite the species Chrysobalanus icaco L. being popularly used in the treatment of several diseases due to the pharmacological properties of its bioactive compounds, there are few studies in the literature regarding its toxicity regarding reproduction. Therefore, the purpose of this study was to assess the potential embryotoxic and teratogenic effects of the aqueous extract of C. icaco leaves (AECi) on Wistar rats. Animals were given AECi at doses of 100, 200, and 400 mg/kg during the pre-implantation and organogenesis periods. Data were analyzed using ANOVA followed by Tukey's test and Kruskal-Wallis. Pregnant rats treated during the pre-implantation period showed no signs of reproductive toxicity. Rats that received AECi at 100, 200, and 400 mg/kg during organogenesis did not exhibit any signs of maternal systemic toxicity or significant differences in gestational and embryotoxic parameters. Some skeletal changes were observed in the treated groups. Therefore, it can be suggested that AECi at doses of 100, 200, and 400 mg/kg is safe for treated animals and does not induce reproductive toxicity under the experimental conditions applied, but it also caused low systemic toxicity.
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Affiliation(s)
- Natalie Emanuelle Ribeiro Rodrigues
- Laboratory of Farmatoxicological Prospecting of Bioactive Products (BIOFARMATOX), Department of Antibiotics, Federal University of Pernambuco (UFPE), Recife 54740-520, Pernambuco, Brazil; (A.R.d.S.O.); (S.M.d.A.L.)
- Department of Medicine, University of Pernambuco (UPE), Garanhuns 53294-902, Pernambuco, Brazil; (D.M.N.); (P.B.S.d.A.)
| | - Alisson Rodrigo da Silva Oliveira
- Laboratory of Farmatoxicological Prospecting of Bioactive Products (BIOFARMATOX), Department of Antibiotics, Federal University of Pernambuco (UFPE), Recife 54740-520, Pernambuco, Brazil; (A.R.d.S.O.); (S.M.d.A.L.)
| | - Sandrine Maria de Arruda Lima
- Laboratory of Farmatoxicological Prospecting of Bioactive Products (BIOFARMATOX), Department of Antibiotics, Federal University of Pernambuco (UFPE), Recife 54740-520, Pernambuco, Brazil; (A.R.d.S.O.); (S.M.d.A.L.)
| | - Daniel Medeiros Nunes
- Department of Medicine, University of Pernambuco (UPE), Garanhuns 53294-902, Pernambuco, Brazil; (D.M.N.); (P.B.S.d.A.)
| | | | | | - Almir Gonçalves Wanderley
- Department of Physiology and Pharmacology, Federal University of Pernambuco (UFPE), Recife 50670-901, Pernambuco, Brazil;
- Department of Pharmaceutical Sciences, Federal Univesity of São Paulo, São Paulo 09913-030, Brazil
| | | | - José Bruno Nunes Ferreira Silva
- Laboratory of Biotechnology, Immunology and Health Studies, Medicine Course, Federal University of Tocantins (UFT), Palmas 77001-923, Tocantins, Brazil;
| | - Álvaro Aguiar Coelho Teixeira
- Department of Morphology and Animal Physiology, Federal Rural University of Pernambuco (UFPE), Recife 52171-900, Pernambuco, Brazil;
| | - Teresinha Gonçalves da Silva
- Laboratory of Farmatoxicological Prospecting of Bioactive Products (BIOFARMATOX), Department of Antibiotics, Federal University of Pernambuco (UFPE), Recife 54740-520, Pernambuco, Brazil; (A.R.d.S.O.); (S.M.d.A.L.)
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de Lemos Vasconcelos Silva E, de Jesus Oliveira AC, de Carvalho Moreira LMC, Silva-Filho EC, Wanderley AG, de La Roca Soares MF, Soares-Sobrinho JL. Insulin-loaded nanoparticles based on acetylated cashew gum/chitosan complexes for oral administration and diabetes treatment. Int J Biol Macromol 2023; 242:124737. [PMID: 37148931 DOI: 10.1016/j.ijbiomac.2023.124737] [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: 12/21/2022] [Revised: 04/28/2023] [Accepted: 05/01/2023] [Indexed: 05/08/2023]
Abstract
Insulin is one of the most important drugs in the clinical treatment of diabetes. There is growing interest in oral insulin administration as it mimics the physiological pathway and potentially reduces side effects associated with subcutaneous injection. In this study, a nanoparticulate system was developed using acetylated cashew gum (ACG) and chitosan by the polyelectrolyte complexation method, for oral administration of insulin. The nanoparticles were characterized by size, zeta potential and encapsulation efficiency (EE%). And they had a particle size of 460 ± 11.0 nm, PDI of 0.2 ± 0.021, zeta potential of 30.6 ± 0.48 mV, and an EE% of 52.5 %. Cytotoxicity assays were performed for HT-29 cell lines. It was observed that ACG and nanoparticles did not have a significant effect on cell viability, verifying their biocompatibility. Hypoglycemic effects of the formulation were analyzed in vivo, noting that the nanoparticles reduced blood glucose by 51.0 % of baseline levels after 12 h, not inducing signs of toxicity or death. Biochemical and hematological profiles were not clinically modified. Histological study indicated no signs of toxicity. Results showed that the nanostructured system presented itself as a potential vehicle for oral insulin release.
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Affiliation(s)
- Eliadna de Lemos Vasconcelos Silva
- Quality Control Core of Medicines and Correlates - NCQMC, Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, PE, Brazil
| | - Antônia Carla de Jesus Oliveira
- Quality Control Core of Medicines and Correlates - NCQMC, Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, PE, Brazil
| | | | - Edson C Silva-Filho
- Interdisciplinary Laboratory for Advanced Materials - LIMAV, Federal University of Piaui, Teresina, PI, Brazil
| | | | - Monica Felts de La Roca Soares
- Quality Control Core of Medicines and Correlates - NCQMC, Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, PE, Brazil
| | - José Lamartine Soares-Sobrinho
- Quality Control Core of Medicines and Correlates - NCQMC, Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, PE, Brazil.
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Damasceno Leão A, Ribeiro da Silva J, Fontana Agostini J, Dal Santo G, Duarte Vieira L, da Costa Silva Neto J, Rodrigues de Lima Porto Ramos K, Gonçalves da Silva T, Alvarez-Lorenzo C, Gonçalves Wanderley A, Lamartine Soares-Sobrinho J. Efficacy and safety of nanoparticles of glibenclamide and organomodified layered double hydroxides in diabetics rats. Int J Pharm 2023; 634:122678. [PMID: 36738803 DOI: 10.1016/j.ijpharm.2023.122678] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023]
Abstract
Glibenclamide (GB) is an important drug in the treatment of type II diabetes mellitus (DM II); however, its low solubility causes variability in its oral bioavailability, negatively affecting the pharmacological treatment. Nanoparticles (NP) of GB and organophilized Layered Double Hydroxide (LDH) were developed to improve oral bioavailability and tested in streptozotocin-induced diabetic rats to evaluate therapeutic efficacy and safety. Blood glucose was measured for 12 h or after 28 days of treatment. In addition, body weight, water and feed consumption, hematological, biochemistry and morphological parameters and markers of oxidative stress were determined. After the treatment, GB with LDH normalized the blood glucose level, indicating a better release profile. Water and feed intake and body weight of animals treated with GB and GB with LDH were closer to the normoglycemic group and did not indicate signs of toxicity of the nanoparticles. The biochemical, hematological and histological results also showed no significant changes related to nanotoxicity. The combination of GB with LDH proved to be critical in the oxidative balance, as it reduced the oxidative stress of vascular tissue. In conclusion, NPs are a potential controlled release system for the treatment of DM II.
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Affiliation(s)
- Amanda Damasceno Leão
- Federal University of Pernambuco-UFPE, Department of Pharmaceutical Sciences, University, Recife, Brazil.
| | - Juliano Ribeiro da Silva
- Federal University of Pernambuco-UFPE, Department of Pharmaceutical Sciences, University, Recife, Brazil
| | - Jotele Fontana Agostini
- Federal University of Pernambuco-UFPE, Department of Pharmaceutical Sciences, University, Recife, Brazil
| | - Glaucia Dal Santo
- Federal University of Pernambuco-UFPE, Department of Pharmaceutical Sciences, University, Recife, Brazil
| | - Lêucio Duarte Vieira
- Federal University of Pernambuco-UFPE, Department Physiology and Pharmacology, University, Recife, Brazil
| | | | | | | | - Carmen Alvarez-Lorenzo
- University of Santiago de Compostela-USC, Department of Pharmacology, Pharmacy and Pharmaceutical Technology, iMATUS and IDIS, 15782, Santiago de Compostela, Spain
| | - Almir Gonçalves Wanderley
- Federal University of São Paulo-UNIFESP, Department of Pharmaceutical Sciences, University, Diadema, Brazil
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Wanderley AG, Quintans Júnior LJ, Melo Coutinho HD, Guedes da Silva Almeida JR, De Menezes IRA. Editorial: Gastrointestinal and Liver Effects of Fruits and Their Synergism With Drug Therapy: Exploring Possible Mechanisms of Action. Front Pharmacol 2022; 13:940668. [PMID: 35847026 PMCID: PMC9284250 DOI: 10.3389/fphar.2022.940668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 05/20/2022] [Indexed: 12/01/2022] Open
Affiliation(s)
- Almir Gonçalves Wanderley
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemical and Pharmaceutical Sciences, Universidade Federal de São Paulo—UNIFESP, São Paulo, Brazil
- *Correspondence: Irwin Rose Alencar De Menezes, ; Almir Gonçalves Wanderley,
| | - Lucindo José Quintans Júnior
- Department of Physiology, Federal University of Sergipe—UFS, Aracaju, Brazil
- *Correspondence: Irwin Rose Alencar De Menezes, ; Almir Gonçalves Wanderley,
| | | | | | - Irwin Rose Alencar De Menezes
- Department of Chemical Biology, Regional University of Cariri—URCA, Crato, Brazil
- *Correspondence: Irwin Rose Alencar De Menezes, ; Almir Gonçalves Wanderley,
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9
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Baldin SL, de Pieri Pickler K, de Farias ACS, Bernardo HT, Scussel R, da Costa Pereira B, Pacheco SD, Dondossola ER, Machado-de-Ávila RA, Wanderley AG, Rico EP. Gallic acid modulates purine metabolism and oxidative stress induced by ethanol exposure in zebrafish brain. Purinergic Signal 2022; 18:307-315. [PMID: 35687211 DOI: 10.1007/s11302-022-09869-z] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 05/09/2022] [Indexed: 10/18/2022] Open
Abstract
Gallic acid (GA) is a secondary metabolite found in plants. It has the ability to cross the blood-brain barrier and, through scavenging properties, has a protective effect in a brain insult model. Alcohol metabolism generates reactive oxygen species (ROS); thus, alcohol abuse has a deleterious effect on the brain. The zebrafish is a vertebrate often used for screening toxic substances and in acute ethanol exposure models. The aim of this study was to evaluate whether GA pretreatment (24 h) prevents the changes induced by acute ethanol exposure (1 h) in the purinergic signaling pathway in the zebrafish brain via degradation of extracellular nucleotides and oxidative stress. The nucleotide cascade promoted by the nucleoside triphosphate diphosphohydrolase (NTPDase) and 5'-nucleotidase was assessed by quantifying nucleotide metabolism. The effect of GA alone at 5 and 10 mg L-1 did not change the nucleotide levels. Pretreatment with 10 mg L-1 GA prevented an ethanol-induced increase in ATP and ADP levels. No significant difference was found between the AMP levels of the two pretreatment groups. Pretreatment with 10 mg L-1 GA prevented ethanol-enhanced lipid peroxidation and dichlorodihydrofluorescein (DCFH) levels. The higher GA concentration was also shown to positively modulate against ethanol-induced effects on superoxide dismutase (SOD), but not on catalase (CAT). This study demonstrated that GA prevents the inhibitory effect of ethanol on NTPDase activity and oxidative stress parameters, thus consequently modulating nucleotide levels that may contribute to the possible protective effects induced by alcohol and purinergic signaling.
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Affiliation(s)
- Samira Leila Baldin
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil
| | - Karolyne de Pieri Pickler
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil
| | - Ana Caroline Salvador de Farias
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil
| | - Henrique Teza Bernardo
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil
| | - Rahisa Scussel
- Experimental Physiology Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil
| | - Bárbara da Costa Pereira
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil
| | - Suzielen Damin Pacheco
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil
| | - Eduardo Ronconi Dondossola
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil
| | - Ricardo Andrez Machado-de-Ávila
- Experimental Physiology Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil
| | - Almir Gonçalves Wanderley
- Department of Pharmaceutical Sciences, Federal University of Pernambuco (UFPE), Recife, PE, Brazil.,Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife, PE, Brazil
| | - Eduardo Pacheco Rico
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil. .,Laboratory of Translational Biomedicine Laboratory, University of Southern Santa Catarina (UNESC), Criciuma, Santa Catarina, Brazil.
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10
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Simões-Alves AC, Arcoverde-Mello APFC, Campos JDO, Wanderley AG, Leandro CVG, da Costa-Silva JH, de Oliveira Nogueira Souza V. Cardiometabolic Effects of Postnatal High-Fat Diet Consumption in Offspring Exposed to Maternal Protein Restriction In Utero. Front Physiol 2022; 13:829920. [PMID: 35620602 PMCID: PMC9127546 DOI: 10.3389/fphys.2022.829920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 03/29/2022] [Indexed: 01/01/2023] Open
Abstract
In recent decades, the high incidence of infectious and parasitic diseases has been replaced by a high prevalence of chronic and degenerative diseases. Concomitantly, there have been profound changes in the behavior and eating habits of families around the world, characterizing a “nutritional transition” phenomenon, which refers to a shift in diet in response to modernization, urbanization, or economic development from undernutrition to the excessive consumption of hypercaloric and ultra-processed foods. Protein malnutrition that was a health problem in the first half of the 20th century has now been replaced by high-fat diets, especially diets high in saturated fat, predisposing consumers to overweight and obesity. This panorama points us to the alarming coexistence of both malnutrition and obesity in the same population. In this way, individuals whose mothers were undernourished early in pregnancy and then exposed to postnatal hyperlipidic nutrition have increased risk factors for developing metabolic dysfunction and cardiovascular diseases in adulthood. Thus, our major aim was to review the cardiometabolic effects resulting from postnatal hyperlipidic diets in protein-restricted subjects, as well as to examine the epigenetic repercussions occasioned by the nutritional transition.
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Affiliation(s)
- Aiany Cibelle Simões-Alves
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Department of Physical Education and Sport Sciences, Universidade Federal de Pernambuco UFPE, Vitória de Santo Antão, Brazil
| | - Ana Paula Fonseca Cabral Arcoverde-Mello
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Department of Physical Education and Sport Sciences, Universidade Federal de Pernambuco UFPE, Vitória de Santo Antão, Brazil
| | - Jéssica de Oliveira Campos
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Department of Physical Education and Sport Sciences, Universidade Federal de Pernambuco UFPE, Vitória de Santo Antão, Brazil
| | | | - Carol Virginia Gois Leandro
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Department of Physical Education and Sport Sciences, Universidade Federal de Pernambuco UFPE, Vitória de Santo Antão, Brazil
| | - João Henrique da Costa-Silva
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Department of Physical Education and Sport Sciences, Universidade Federal de Pernambuco UFPE, Vitória de Santo Antão, Brazil
| | - Viviane de Oliveira Nogueira Souza
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Department of Physical Education and Sport Sciences, Universidade Federal de Pernambuco UFPE, Vitória de Santo Antão, Brazil
- *Correspondence: Viviane de Oliveira Nogueira Souza,
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11
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Alcântara IS, Martins AOBPB, de Oliveira MRC, Coronel C, Gomez MCV, Rolón M, Wanderley AG, Júnior LJQ, de Souza Araújo AA, de Araújo ACJ, Freitas PR, Coutinho HDM, de Menezes IRA. Cytotoxic potential and antiparasitic activity of the Croton rhamnifolioides Pax leaves. & K. Hoffm essential oil and its inclusion complex (EOCr/β-CD). Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-03556-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Santo GD, de Veras BO, Rico E, Magro JD, Agostini JF, Vieira LD, Calisto JFF, Mocelin R, de Sá Fonseca V, Wanderley AG. Hexane extract from SpoSndias mombin L. (Anacardiaceae) prevents behavioral and oxidative status changes on model of Parkinson's disease in zebrafish. Comp Biochem Physiol C Toxicol Pharmacol 2021; 241:108953. [PMID: 33310063 DOI: 10.1016/j.cbpc.2020.108953] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 07/22/2020] [Revised: 12/04/2020] [Accepted: 12/06/2020] [Indexed: 12/29/2022]
Abstract
The search for new therapies, derived from natural compounds in order to prevent and treat Parkinson's disease (PD) has aroused the interest of many researchers. Spondias mombin (L) has active constituents with known antioxidant and anti-inflammatory activities. The aim of this study was to evaluate the neuroprotective potential of the hexane extract of S. mombin (EHSm) in an experimental model of DP induced by rotenone in zebrafish. The analysis of GC/MS demonstrated cyclogallipharaol (13.88%) and dl-α-tocopherol (8.08%) mostly, while HPLC-DAD indicated the presence of quercetin (<5), quercetrin (6.54 mg/g) and rutin (8.83 mg/g). The zebrafish exposed for 4 weeks to rotenone (ROT, 3 μg/L) and EHSm (5, 15, 25 mg/L). EHSm (25 mg/L) was able to reverse the behavioral damage induced by ROT in the entries and time spent in the top area of the tank. The parameters biochemicals indicated of EHSm prevented oxidative stress (TBARS e total thiols), inflammation and dopamine uptake triggered by ROT, evidenced of increased on the CAT, SOD and GSH and decreased of GST, O2- production and NADPH oxidase activities. We conclude that EHSm demonstrate a neuroprotector effect mediated through anxiolytic and antioxidant activities. However, more studies are necessary to elucidate the exact mechanism underlying the effects of EHSm on DP induced by rotenone in zebrafish.
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Affiliation(s)
- Glaucia Dal Santo
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Pernambuco (UFPE), Recife, PE, Brazil
| | - Bruno Oliveira de Veras
- Departamento de Medicina Tropical, Universidade Federal de Pernambuco (UFPE), Recife, PE, Brazil
| | - Eduardo Rico
- Laboratório de Neurologia Experimental, Programa de Pós-Graduação em Ciências da Saúde, Universidade do Extremo Sul Catarinense (UNESC), Criciúma, SC, Brazil
| | - Jacir Dal Magro
- Área de Ciências Ambientais, Universidade Comunitária da Região de Chapecó (Unochapecó), Chapecó, SC, Brazil
| | - Jotele Fontana Agostini
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Pernambuco (UFPE), Recife, PE, Brazil
| | - Leucio Duarte Vieira
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Pernambuco (UFPE), Recife, PE, Brazil
| | - Jean Felipe Fossá Calisto
- Área de Ciências Ambientais, Universidade Comunitária da Região de Chapecó (Unochapecó), Chapecó, SC, Brazil
| | - Ricieri Mocelin
- Programa de Pós-Graduação em Farmacologia e Terapêutica, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Vitória de Sá Fonseca
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Pernambuco (UFPE), Recife, PE, Brazil; Programa de Pós-Graduação em Farmacologia e Terapêutica, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Almir Gonçalves Wanderley
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Pernambuco (UFPE), Recife, PE, Brazil; Departamento de Fisiologia e Farmacologia, Universidade Federal de Pernambuco (UFPE), Recife, PE, Brazil.
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13
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Agostini JF, Santo GD, Baldin SL, Bernardo HT, de Farias ACS, Rico EP, Wanderley AG. Gallic Acid Reverses Neurochemical Changes Induced by Prolonged Ethanol Exposure in the Zebrafish Brain. Neuroscience 2020; 455:251-262. [PMID: 33285238 DOI: 10.1016/j.neuroscience.2020.11.040] [Citation(s) in RCA: 4] [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: 07/16/2020] [Revised: 11/24/2020] [Accepted: 11/25/2020] [Indexed: 01/23/2023]
Abstract
Gallic acid (GA) is a polyphenolic compound that has attracted significant interest due to its antioxidant action through free radical elimination and metal chelation. Ethanol is a highly soluble psychoactive substance, and its toxicity is associated with oxidative stress. In this context, the purpose of the present study was to investigate the effect of GA on neurochemical changes in zebrafish brains exposed to ethanol. GA was first analyzed in isolation by treating the animals at concentrations of 5, 10, and 20 mg/L for 24 h and 48 h. The results revealed that the group exposed to 20 mg/L over a 24/48 h period exhibited increases in thiobarbituric acid reactive substance (TBA-RS) levels and 2',7'-dichlorofluorescein (DCFH) oxidation, demonstrating a pro-oxidant profile. Moreover, decrease in acetylcholinesterase (AChE) enzyme activity was observed. To investigate the effects of GA after ethanol exposure, the animals were divided into four groups: control; those exposed to 0.5% ethanol for 7 days; those exposed to 0.5% ethanol for 7 days and treated with GA at 5 and 10 mg/L on day 8. Treatment with GA at 5 and 10 mg/L reversed impairment of choline acetyltransferase activity and the damage to TBA-RS levels, DCFH oxidation, and superoxide dismutase activity induced by ethanol. Results of the present study suggest that GA treatment (20 mg/L) appeared to disrupt oxidative parameters in the zebrafish brain. GA treatment at 5 and 10 mg/L reversed alterations to the cholinergic system induced by prolonged exposure to ethanol in the zebrafish brain, probably through an antioxidant mechanism.
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Affiliation(s)
- Jotele Fontana Agostini
- Department of Pharmaceutical Sciences, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
| | - Glaucia Dal Santo
- Department of Pharmaceutical Sciences, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
| | - Samira Leila Baldin
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Extreme Southern Catarinense (UNESC), Criciúma, Santa Catarina, Brazil
| | - Henrique Teza Bernardo
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Extreme Southern Catarinense (UNESC), Criciúma, Santa Catarina, Brazil
| | - Ana Caroline Salvador de Farias
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Extreme Southern Catarinense (UNESC), Criciúma, Santa Catarina, Brazil
| | - Eduardo Pacheco Rico
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Extreme Southern Catarinense (UNESC), Criciúma, Santa Catarina, Brazil
| | - Almir Gonçalves Wanderley
- Department of Pharmaceutical Sciences, Federal University of Pernambuco (UFPE), Recife, PE, Brazil; Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife, PE, Brazil.
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Vasconcelos Silva EDL, Oliveira ACDJ, Patriota YBG, Ribeiro AJ, Veiga F, Hallwass F, Silva-Filho EC, da Silva DA, Soares MFDLR, Wanderley AG, Soares-Sobrinho JL. Solvent-free synthesis of acetylated cashew gum for oral delivery system of insulin. Carbohydr Polym 2018; 207:601-608. [PMID: 30600045 DOI: 10.1016/j.carbpol.2018.11.071] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [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: 08/16/2018] [Revised: 10/19/2018] [Accepted: 11/22/2018] [Indexed: 11/16/2022]
Abstract
Cashew gum (CG) is a biopolymer that presents a favorable chemical environment for structural modifications, which leads to more stable and resistant colloidal systems. The gum was subjected to an acetylation reaction using a fast, simple, solvent-free and low cost methodology. The derivative was characterized by infrared and NMR spectroscopy, elemental analysis, coefficient of solubility and zeta potential. The modified biopolymer was used as a platform for drug delivery systems using insulin as a model drug. Nanoparticles were developed through the technique of polyelectrolytic complexation and were characterized by size, surface charge, entrapment efficiency and gastrointestinal release profile. The nanoparticles presented size of 460 nm with a 52.5% efficiency of entrapment of insulin and the electrostatic stabilization was suggested by the zeta potential of + 30.6 mV. Sustained release of insulin was observed for up to 24 h. The results showed that acetylated cashew gum (ACG) presented potential as a vehicle for sustained oral insulin release.
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Affiliation(s)
| | | | | | - António José Ribeiro
- Laboratory of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Portugal
| | - Francisco Veiga
- Laboratory of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Portugal
| | - Fernando Hallwass
- Department of Fundamental Chemistry, Federal University of Pernambuco, Recife, PE, Brazil
| | | | - Durcilene Alves da Silva
- Research Center on Biodiversity and Biotechnology, Federal University of Piauí, Parnaíba, PI, Brazil
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15
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Medeiros-Linard CFB, Andrade-da-Costa BLDS, Augusto RL, Sereniki A, Trevisan MTS, Perreira RDCR, de Souza FTC, Braz GRF, Lagranha CJ, de Souza IA, Wanderley AG, Smailli SS, Lafayette SSL. Anacardic Acids from Cashew Nuts Prevent Behavioral Changes and Oxidative Stress Induced by Rotenone in a Rat Model of Parkinson’s Disease. Neurotox Res 2018. [DOI: 10.1007/s12640-018-9882-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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16
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Aragão TP, Prazeres LDKTD, Brito SA, Neto PJR, Rolim LA, Almeida JRGDS, Caldas GFR, Wanderley AG. Contribution of Secondary Metabolites to the Gastroprotective Effect of Aqueous Extract of Ximenia americana L. (Olacaceae) Stem Bark in Rats. Molecules 2018; 23:E112. [PMID: 29315228 PMCID: PMC6017445 DOI: 10.3390/molecules23010112] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 11/30/2017] [Revised: 12/27/2017] [Accepted: 01/04/2018] [Indexed: 02/07/2023] Open
Abstract
Ximenia americana L. (Olacaceae) is used in ethnomedicine as cicatrizant and for the treatment of gastric disorders. This study identified the chemical constituents of the aqueous extract of X. americana (XaAE) and evaluated its antiulcerogenic activity. After lyophilization, XaAE was analyzed by liquid chromatography-mass spectrometry (LC-MS) and its antiulcerogenic effect was evaluated in acute gastric lesions induced by ethanol, acidified ethanol, and indomethacin. Antisecretory action, mucus production and the participation of sulfhydryl groups (-SH) and nitric oxide (NO) were also investigated. The chromatographic analysis identified procyanidins B and C and catechin/epicatechin as major compounds. Oral administration of XaAE (100, 200 and 400 mg/kg) inhibited the gastric lesions induced by ethanol (76.1%, 77.5% and 100%, respectively), acidified ethanol (44.9%, 80.6% and 94.9%, respectively) and indomethacin (56.4%, 52.7% and 64.9%, respectively). XaAE reduced gastric contents and acidity (51.4% and 67.7%, respectively) but did not alter the production of gastric mucus. The reduction of the -SH and NO groups promoted by N-ethylmaleimide (NEM) and Nω-nitro-l-arginine-methyl-ester (L-NAME) respectively, reduced the gastroprotective effect of XaAE. In conclusion, XaAE has gastroprotective activity mediated in part by -SH, NO and antisecretory activity. This antiulcer action was initially correlated to its major constituents, procyanidins B and C and catechin/epicatechin.
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Affiliation(s)
- Ticiana Parente Aragão
- Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife 50740-521, PE, Brazil.
- Department of Nutrition, University of Pernambuco, Petrolina 56328-903, PE, Brazil.
| | | | - Samara Alves Brito
- Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife 50740-521, PE, Brazil.
| | - Pedro José Rolim Neto
- Laboratory of Medication Technology, Federal University of Pernambuco, Recife 50740-521, PE, Brazil.
| | - Larissa Araújo Rolim
- Central of Analysis of Drugs, Medicines and Food, Federal University of San Francisco Valley, Petrolina 56304-205, PE, Brazil.
| | | | - Germana Freire Rocha Caldas
- Graduate Program in Health Sciences, Biological and Health Sciences Center, Federal University of Maranhão, São Luís 65080-805, MA, Brazil.
| | - Almir Gonçalves Wanderley
- Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife 50740-521, PE, Brazil.
- Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife 50670-901, PE, Brazil.
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17
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Martins AOBPB, Rodrigues LB, Cesário FRAS, de Oliveira MRC, Tintino CDM, Castro FFE, Alcântara IS, Fernandes MNM, de Albuquerque TR, da Silva MSA, de Sousa Araújo AA, Júniur LJQ, da Costa JGM, de Menezes IRA, Wanderley AG. Anti-edematogenic and anti-inflammatory activity of the essential oil from Croton rhamnifolioides leaves and its major constituent 1,8-cineole (eucalyptol). Biomed Pharmacother 2017; 96:384-395. [DOI: 10.1016/j.biopha.2017.10.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 09/12/2017] [Accepted: 10/02/2017] [Indexed: 12/13/2022] Open
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18
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Santos da Silva A, de Alcantara Maciel G, Soares de Lima Wanderley L, Gonçalves Wanderley A. Indicadores do uso de medicamentos na atenção primária de saúde: uma revisão sistemática. Rev Panam Salud Publica 2017; 41:e132. [PMID: 31384262 PMCID: PMC6650627 DOI: 10.26633/rpsp.2017.132] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 01/23/2017] [Accepted: 05/30/2017] [Indexed: 01/21/2023] Open
Abstract
Objective. To analyze the rational use of medicines in the context of primary health care (PHC) according to the indicators recommended by the World Health Organization (WHO). Method. A systematic review of the literature was performed following PRISMA guidelines to synthesize the evidence produced by the application of drug use indicators in PHC in the period from 2011 to 2016. The following databases were searched: PudMed, SciELO and Google Scholar, Virtual Health Library/BIREME, and Portal de Periódicos CAPES, using the keywords “World Health Organization,” “indicators,” “drug utilization,” and “rational use of drugs” in Portuguese and English. Original articles describing studies performed at the PHC level, using at least one of the three sets of indicators (prescription, service-related, or health care) were included. Results. Of the 16 studies included, 56.2% were prospective, 37.5% were developed at a local level, 62.5% employed convenience sampling, 56.2% lasted up to 6 months, and 43.8% were performed in Brazil. Prescription indicators were used most (87.5%), followed by service-related indicators (37.5%) and health care indicators (31.3%). None of the scenarios described in the articles fully met the WHO recommendations. The most frequent interventions suggested to resolve the problems related to the rational use of medications included continuing education for rational prescription (56.3%), use of updated lists of essential medicines, including generic drug names and reflecting the needs of the population (31.3%), and implementation of clinical protocols to standardize therapeutic management (31.3%). Conclusions. Application of the WHO indicators revealed irrational practices of drug use in PHC in several countries.
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Affiliation(s)
- André Santos da Silva
- Universidade Federal do Vale do São Francisco Colegiado de Farmácia Petrolina (PE) Brasil Universidade Federal do Vale do São Francisco, Colegiado de Farmácia, Petrolina (PE), Brasil
| | - Gabriella de Alcantara Maciel
- Centro Universitário Tabosa de Almeida Curso de Farmácia Caruaru (PE) Brasil Centro Universitário Tabosa de Almeida, Curso de Farmácia. Caruaru (PE), Brasil
| | - Luciane Soares de Lima Wanderley
- Universidade Federal de Pernambuco Departamento de Enfermagem Recife (PE) Brasil Universidade Federal de Pernambuco, Departamento de Enfermagem, Recife (PE), Brasil
| | - Almir Gonçalves Wanderley
- Universidade Federal de Pernambuco Departamento de Fisiologia e Farmacologia Recife (PE) Brasil Universidade Federal de Pernambuco, Departamento de Fisiologia e Farmacologia, Recife (PE), Brasil
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de Lacerda Neto LJ, Ramos AGB, Santos Sales V, de Souza SDG, dos Santos ATL, de Oliveira LR, Kerntopf MR, de Albuquerque TR, Coutinho HDM, Quintans-Júnior LJ, Wanderley AG, de Menezes IRA. Gastroprotective and ulcer healing effects of hydroethanolic extract of leaves of Caryocar coriaceum: Mechanisms involved in the gastroprotective activity. Chem Biol Interact 2017; 261:56-62. [DOI: 10.1016/j.cbi.2016.11.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 10/23/2016] [Accepted: 11/17/2016] [Indexed: 11/24/2022]
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20
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Caldas GFR, Limeira MMF, Araújo AV, Albuquerque GS, Silva-Neto JDC, Silva TGD, Costa-Silva JH, Menezes IRAD, Costa JGMD, Wanderley AG. Repeated-doses and reproductive toxicity studies of the monoterpene 1,8-cineole (eucalyptol) in Wistar rats. Food Chem Toxicol 2016; 97:297-306. [DOI: 10.1016/j.fct.2016.09.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 09/08/2016] [Accepted: 09/15/2016] [Indexed: 11/28/2022]
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Rocha Caldas GF, Oliveira ARDS, Araújo AV, Lafayette SSL, Albuquerque GS, Silva-Neto JDC, Costa-Silva JH, Ferreira F, da Costa JGM, Wanderley AG. Gastroprotective Mechanisms of the Monoterpene 1,8-Cineole (Eucalyptol). PLoS One 2015; 10:e0134558. [PMID: 26244547 PMCID: PMC4526535 DOI: 10.1371/journal.pone.0134558] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2014] [Accepted: 07/13/2015] [Indexed: 01/31/2023] Open
Abstract
Recently, our research group identified and reported 1,8-cineole (CIN), a monoterpene that naturally occur in many aromatic plants, as one of the major constituent of the essential oil from leaves of Hyptis martiusii (EOHM), as well as characterized the gastroprotective action of this oil. The aim of this study was to investigate the mechanisms of action involved in the antiulcer and healing activity of CIN, in order to confirm its correlation with the gastroprotective effect of EOHM. Wistar rats were exposed to different protocols (acute ulceration, gastrointestinal motility and antisecretory activity). In addition, were determinated the involvement of nitric oxide and sulphydryl groups; the levels of gastric mucus, lipid peroxidation, sulphydryl groups and myeloperoxidase activity. The healing ability was evaluated by acetic acid-induced chronic ulcer and histological and immunohistochemical analysis (PCNA, Ki-67 and BrdU). The treatment with CIN inhibited ethanol-, ethanol/HCl- and indomethacin-induced gastric lesions. The highest doses of CIN inhibited gastric emptying, but did not affect intestinal transit. CIN (100 mg/kg) reduced the volume of basal but not stimulated acid secretion. CIN increased levels of mucus (89.3%), prevented depletion of -SH groups (62.6%) and reduced the level of lipid peroxidation (55.3%) and myeloperoxidase activity (59.4%) in the gastric mucosa. In chronic ulcer model, CIN reduced in 43.1% the gastric area lesion, promoted significant regeneration and restoration of the levels of mucus in glandular cells as confirmed by histological analysis; and promoted increase in cell proliferation as evidenced by reactivity for PCNA, Ki-67 and BrdU. This findings demonstrate the role of 1,8-cineole as an important ulcer healing agent and indicate the involvement of antioxidant and cytoprotective mechanisms in the gastroprotective effect of compound. This study also provides evidence that 1,8-cineole is related to the gastroprotective effect of the essential oil of Hyptis martiusii.
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Affiliation(s)
| | | | - Alice Valença Araújo
- Department of Physiology and Pharmacology, Universidade Federal de Pernambuco, 50670–901, Recife, PE, Brazil
| | | | | | | | - João Henrique Costa-Silva
- Department of Physical Education and Sport Sciences, Universidade Federal de Pernambuco, 55608–680, Vitória de Santo Antão, PE, Brazil
| | - Fabiano Ferreira
- Department of Physiology and Pharmacology, Universidade Federal de Pernambuco, 50670–901, Recife, PE, Brazil
| | | | - Almir Gonçalves Wanderley
- Department of Pharmaceutical Sciences, Universidade Federal de Pernambuco, 50740–521, Recife, PE, Brazil
- Department of Physiology and Pharmacology, Universidade Federal de Pernambuco, 50670–901, Recife, PE, Brazil
- * E-mail:
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da Silva Lippo BR, Batista TM, de Rezende LF, Cappelli AP, Camargo RL, Branco RCS, Barbosa Sampaio HC, Protzek AOP, Wanderley MI, Arantes VC, Corat MAF, Carneiro EM, Udrisar DP, Wanderley AG, Ferreira F. Low-protein diet disrupts the crosstalk between the PKA and PKC signaling pathways in isolated pancreatic islets. J Nutr Biochem 2015; 26:556-62. [DOI: 10.1016/j.jnutbio.2014.12.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 11/26/2014] [Accepted: 12/10/2014] [Indexed: 10/24/2022]
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Barros MAV, De Brito Alves JL, Nogueira VO, Wanderley AG, Costa-Silva JH. Maternal low-protein diet induces changes in the cardiovascular autonomic modulation in male rat offspring. Nutr Metab Cardiovasc Dis 2015; 25:123-130. [PMID: 25287449 DOI: 10.1016/j.numecd.2014.07.011] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [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: 06/04/2014] [Revised: 07/16/2014] [Accepted: 07/24/2014] [Indexed: 11/18/2022]
Abstract
BACKGROUND AND AIMS Maternal undernutrition induces development of the arterial hypertension. We investigated the effects of a maternal low-protein diet on cardiovascular autonomic control in the offspring. METHODS AND RESULTS Male Wistar rats were divided into two groups according to the diets of their mothers during gestation and lactation: the control (normal protein, NP, 17% casein; n = 14) and low-protein (LP, 8% casein; n = 14) groups. Direct measurements of arterial pressure (AP) were recorded from wakeful 90-day-old male offspring. The LP offspring presented higher mean AP than did the NP rats (NP: 93 ± 4 vs. LP: 113 ± 2 mmHg; p < 0.05), whereas the heart rate (HR) was similar in the two groups. In the spectral analysis, the LP group showed higher power at low (NP: 1.98 ± 0.25 vs. LP: 3.7 ± 0.3 mmHg²; p < 0.05) and high (NP: 1.28 ± 0.18 vs. LP: 2.13 ± 0.42 mmHg²; p < 0.05) frequencies of systolic arterial pressure (SAP). In the pulse interval, the LP group presented an increase in the LF/HF ratio (NP: 0.32 vs. LP: 0.56; p < 0.05). After propranolol (4 mg/kg, intravenous (iv)), the bradycardia was higher in the LP group (NP: -36 ± 8 vs. LP: -94 ± 12 bpm; p < 0.05), after methylatropine (2 mg/kg, iv), the tachycardia was similar to NP group. After administration of the ganglionic blocker (hexamethonium; 25 mg/kg, iv), the LP animals showed larger delta variation in the AP (NP: -33.7 ± 5 vs. LP: -53.6 ± 4 mmHg; p < 0.05). CONCLUSION The rats subjected to protein malnutrition presented an increase in the cardiovascular sympathetic tone, which contributed to the elevated AP observed in these animals.
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Affiliation(s)
- M A V Barros
- Department of Physical Education and Sport Sciences, Academic Center of Vitoria (CAV), Federal University of Pernambuco, 55608-680, Brazil
| | - J L De Brito Alves
- Department of Physical Education and Sport Sciences, Academic Center of Vitoria (CAV), Federal University of Pernambuco, 55608-680, Brazil
| | - V O Nogueira
- Department of Physical Education and Sport Sciences, Academic Center of Vitoria (CAV), Federal University of Pernambuco, 55608-680, Brazil
| | - A G Wanderley
- Department of Physiology and Pharmacology, Federal University of Pernambuco, Brazil
| | - J H Costa-Silva
- Department of Physical Education and Sport Sciences, Academic Center of Vitoria (CAV), Federal University of Pernambuco, 55608-680, Brazil.
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Leal AFG, Leite MC, Medeiros CSQ, Cavalcanti IMF, Wanderley AG, Magalhães NSS, Neves RP. Antifungal activity of a liposomal itraconazole formulation in experimental Aspergillus flavus keratitis with endophthalmitis. Mycopathologia 2014; 179:225-9. [PMID: 25431088 DOI: 10.1007/s11046-014-9837-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Accepted: 11/18/2014] [Indexed: 11/29/2022]
Abstract
The aim of this study was to assess the efficacy of topical application of a liposomal formulation of itraconazole for the treatment of experimental keratitis with endophthalmitis caused by Aspergillus flavus. The liposomes were obtained by the lipid film hydration method followed by sonication. Adult female Wistar rats (weighing 200-220 g) were immunosuppressed by intraperitoneal injection of 150 mg/kg of cyclophosphamide 3 days before infection by exposure to the fungus A. flavus (10(7) spores/ml). Forty-eight hours later, the animals were treated with the liposomal formulation. For comparison, one group of animals (n = 6) was treated with the same drug not encapsulated. At the end of the experiment, the animals were evaluated for clinical signs and number of colony forming units (CFU/g), along with direct microscopic examination. The results indicated that the liposomal formulation of itraconazole has better antifungal activity than the unencapsulated drug in the treatment of fungal keratitis with endophthalmitis caused experimentally by A. flavus in Wistar rats.
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Affiliation(s)
- André Ferraz Goiana Leal
- Department of Mycology, Federal University of Pernambuco, Av. da Engenharia, s/n - Cidade Universitária, Recife, PE, CEP: 50740-550, Brazil,
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Araruna MKA, Saraiva RA, Nogara PA, Rocha JBT, Boligon AA, Athayde ML, Rodrigues LB, Henrique S. da Costa R, Santana FRA, Costa JGM, Coutinho HDM, Pinheiro PG, Wanderley AG, A. Menezes IR. Effect of pequi tree Caryocar coriaceum Wittm. leaf extracts on different mouse skin inflammation models: inference with their phenolic compound content. ACTA ACUST UNITED AC 2014. [DOI: 10.5897/ajpp2014.4033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Caldas GFR, Oliveira ARDS, Araújo AV, Quixabeira DCA, Silva-Neto JDC, Costa-Silva JH, de Menezes IRA, Ferreira F, Leite ACL, da Costa JGM, Wanderley AG. Gastroprotective and ulcer healing effects of essential oil of Hyptis martiusii Benth. (Lamiaceae). PLoS One 2014; 9:e84400. [PMID: 24454726 PMCID: PMC3893125 DOI: 10.1371/journal.pone.0084400] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Accepted: 11/19/2013] [Indexed: 11/19/2022] Open
Abstract
Hyptis martiusii Benth. is an aromatic plant found in abundance in northeastern Brazil that is used in ethnomedicine to treat gastric disorders. The aim of this study was to elucidate the mechanisms of action involved in the gastroprotection of the essential oil of Hyptis martiusii (EOHM) and to evaluate its healing capacity. Wistar rats were exposed to different protocols and subsequently were treated with 1% Tween-80 aqueous solution (negative control), pantoprazole, carbenoxolone, N-acetylcysteine (depending on the specificity of each model) or EOHM. The antisecretory activity (basal or stimulated) was determined using the pyloric ligature method. The gastroprotective action of nitric oxide and sulphydryl groups (–SH groups), as well as the quantification of adherent mucus and the levels of malondialdehyde and –SH groups in gastric mucosa, were evaluated using ethanol-induced gastric ulcer model. The healing ability was evaluated using the acetic acid-induced gastric ulcer model and histological and immunohistochemical analysis (HE, PAS and PCNA). EOHM (400 mg/kg) reduced the volume and acidity of gastric secretion stimulated by histamine and pentagastrin. The gastroprotective effect of EOHM involves the participation of endogenous sulfhydryl groups. EOHM increased mucus production (54.8%), reduced levels of MDA (72.5%) and prevented the depletion of –SH groups (73.8%) in the gastric mucosa. The treatment with EOHM reduced in 70.3% the gastric lesion area, promoting significant regeneration of the gastric mucosa, as confirmed by histological analysis and analysis of proliferating cell nuclear antigen. The results show that gastroprotective effect of EOHM is mediated by cytoprotective and antioxidant mechanisms and by their antisecretory activity, and suggest that the essential oil of Hyptis martiusii is a promising candidate for the treatment of gastric ulcers.
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Affiliation(s)
| | | | - Alice Valença Araújo
- Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | | | | | - João Henrique Costa-Silva
- Department of Physical Education and Sport Sciences, Federal University of Pernambuco, Vitória de Santo Antão, Pernambuco, Brazil
| | | | - Fabiano Ferreira
- Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Ana Cristina Lima Leite
- Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | | | - Almir Gonçalves Wanderley
- Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, Pernambuco, Brazil
- Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife, Pernambuco, Brazil
- * E-mail:
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27
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Leite ACL, Barbosa FF, Cardoso MVDO, Moreira DRM, Coêlho LCD, da Silva EB, Filho GBDO, de Souza VMO, Pereira VRA, de C. Reis L, Ferreira PMP, Pessoa C, Wanderley AG, Mota FVB, da Silva TG. Phthaloyl amino acids as anti-inflammatory and immunomodulatory prototypes. Med Chem Res 2013. [DOI: 10.1007/s00044-013-0730-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Lima CR, Vasconcelos CFB, Costa-Silva JH, Maranhão CA, Costa J, Batista TM, Carneiro EM, Soares LAL, Ferreira F, Wanderley AG. Anti-diabetic activity of extract from Persea americana Mill. leaf via the activation of protein kinase B (PKB/Akt) in streptozotocin-induced diabetic rats. J Ethnopharmacol 2012; 141:517-525. [PMID: 22472105 DOI: 10.1016/j.jep.2012.03.026] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2011] [Revised: 03/08/2012] [Accepted: 03/17/2012] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The leaves of Persea americana Mill. (Lauraceae) have been popularly used in the treatment of diabetes in countries in Latin America and Africa. AIM OF THE STUDY To investigate the hypoglycaemic properties and to determine the molecular mechanism by which the hydroalcoholic extract of the leaves of Persea americana reduce blood glucose levels in streptozotocin (STZ)-induced diabetes in rats via the enzymatic pathway of protein kinase B (PKB/Akt). METHODS The hydroalcoholic extract of the leaves of Persea americana (0.15 and 0.3g/kg/day), vehicle and metformin (0.5g/kg/day) were administered orally to STZ-diabetic rats (n=7/group) for 4 weeks. Changes in body weight, food and water intake, fasting glucose levels and oral glucose tolerance were evaluated. Phosphorylation and the expression of PKB in the liver and soleus muscle were determined by Western blot. RESULTS The hydroalcoholic extract of the leaves of Persea americana reduced blood glucose levels and improved the metabolic state of the animals. Additionally, PKB activation was observed in the liver and skeletal muscle of treated rats when compared with untreated rats. CONCLUSION The results indicate that the hydroalcoholic extract of the leaves of Persea americana has anti-diabetic properties and possibly acts to regulate glucose uptake in liver and muscles by way of PKB/Akt activation, restoring the intracellular energy balance.
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Affiliation(s)
- C R Lima
- Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife 50740-521, Brazil
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Vasconcelos CFB, Maranhão HML, Batista TM, Carneiro EM, Ferreira F, Costa J, Soares LAL, Sá MDC, Souza TP, Wanderley AG. Hypoglycaemic activity and molecular mechanisms of Caesalpinia ferrea Martius bark extract on streptozotocin-induced diabetes in Wistar rats. J Ethnopharmacol 2011; 137:1533-1541. [PMID: 21911047 DOI: 10.1016/j.jep.2011.08.059] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2011] [Revised: 08/21/2011] [Accepted: 08/25/2011] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The tea from the stem bark of Caesalpinia ferrea Martius (Leguminosae) has been popularly used in the treatment of diabetes in Brazil. AIM OF THE STUDY To investigate the hypoglycaemic properties and to elucidate the mechanisms by which the aqueous extract of the stem bark of Caesalpinia ferrea reduces blood glucose levels in streptozotocin-induced diabetic rats via the enzymatic pathways of protein kinase B (PKB/Akt), AMP-activated protein kinase (AMPK) and acetyl-CoA carboxylase (ACC). MATERIALS AND METHODS The aqueous extract of the stem bark of Caesalpinia ferrea (300 and 450 mg/kg/day), vehicle and metformin (500 mg/kg/day) were administered orally to STZ-diabetic rats (n = 7/group) for 4 weeks. Changes in body weight, food and water intake, fasting glucose levels and oral glucose tolerance were evaluated. Phosphorylation (P) and the expression of Akt, AMPK and ACC in the liver and skeletal muscle were determined using Western blot. RESULTS The aqueous extract of the stem bark of Caesalpinia ferrea reduced blood glucose levels and improved the metabolic state of the animals. P-Akt was increased in the liver and skeletal muscle of the treated animals, P-AMPK was reduced only in the skeletal muscle of these animals and P-ACC was reduced in both when compared with untreated rats. CONCLUSION The results indicate that the aqueous extract of the stem bark of Caesalpinia ferrea has hypoglycaemic properties and possibly acts to regulate glucose uptake in liver and muscles by way of Akt activation, restoring the intracellular energy balance confirmed by inhibition of AMPK activation.
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Affiliation(s)
- C F B Vasconcelos
- Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife 50670-901, Brazil
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30
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Caldas GFR, do Amaral Costa IM, da Silva JBR, da Nóbrega RF, Rodrigues FFG, da Costa JGM, Wanderley AG. Antiulcerogenic activity of the essential oil of Hyptis martiusii Benth. (Lamiaceae). J Ethnopharmacol 2011; 137:886-892. [PMID: 21774910 DOI: 10.1016/j.jep.2011.07.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2010] [Revised: 06/30/2011] [Accepted: 07/03/2011] [Indexed: 05/27/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Hyptis martiusii (Lamiaceae), popularly known as "cidreira-do-mato" or "cidreira-brava", grows in abundance in the Northeast region of Brazil, where its leaves are traditionally used in folk medicine in the treatment of intestinal and stomach diseases. The aim of this study was to characterize the chemical constituents and to evaluate the anti-ulcerogenic activity of the essential oil of the leaves of Hyptis martiusii (EOHM) in in vivo models of experimental ulcers in rodents. MATERIALS AND METHODS EOHM was obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS). Acute gastric ulcer was induced using absolute ethanol, HCl/ethanol and indomethacin. The volume, pH and total acidity of gastric secretion were determined by the pyloric ligature method and gastrointestinal motility using gastric emptying and intestinal transit. RESULTS Chemical analysis revealed the presence of 24 components that account for 92.13% of the essential oil of dried leaves, indicating the occurrence of mono and sesquiterpenes. Oral administration of EOHM (100, 200 and 400mg/kg) inhibited ethanol-, HCl/ethanol- and indomethacin-induced ulcers. In the case of pylorus ligature, the oil reduced the volume of gastric juices and total acidity, and increased gastric pH. The EOHM reduced the rate of gastric emptying with only the highest doses, but did not show any effect on intestinal transit at any of the three doses. CONCLUSIONS The results indicate that the essential oil of leaves of Hyptis martiusii has an antiulcerogenic activity, as evidenced by its significant inhibition of the formation of ulcers in various models. This effect could be related to an increase of gastric mucosal defensive factors. Further pharmacological studies are being undertaken in order to provide more precise elucidation of the action mechanism involved in this activity.
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Lima LB, Vasconcelos CFB, Maranhão HML, Leite VR, Ferreira PA, Andrade BA, Araújo EL, Xavier HS, Lafayette SSL, Wanderley AG. Acute and subacute toxicity of Schinus terebinthifolius bark extract. J Ethnopharmacol 2009; 126:468-473. [PMID: 19781616 DOI: 10.1016/j.jep.2009.09.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2009] [Revised: 07/10/2009] [Accepted: 09/10/2009] [Indexed: 05/28/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Schinus terebinthifolius Raddi (Anacardiaceae) has long been used in traditional Brazilian medicine, especially to treat inflammatory and haemostatic diseases. AIM OF THE STUDY The objective of this study was to evaluate the acute and subacute toxicity (45 days) of Schinus terebinthifolius via the oral route in Wistar rats of both sexes. MATERIALS AND METHODS For the acute toxicity test, the dried extract of Schinus terebinthifolius bark was administered in doses from 0.625 to 5.0 g/kg (n=5/group/sex) and in the subacute toxicity test the following doses were used: 0.25, 0.625 and 1.5625 g/kg/day (n=13/group/sex), for 45 consecutive days. RESULTS In the acute toxicity test, Schinus terebinthifolius did not produce any toxic signs or deaths. The subacute treatment with Schinus terebinthifolius did not alter either the body weight gain or the food and water consumption. The hematological and biochemical analysis did not show significant differences in any of the parameters examined in female or male groups, except in two male groups, in which the treatment with Schinus terebinthifolius (0.25 and 0.625 g/kg) induced an increase of mean corpuscular volume values (2.9 and 2.6%, respectively). These variations are within the physiological limits described for the specie and does not have clinical relevance. CONCLUSION The acute and subacute administration of the dried extract of Schinus terebinthifolius bark did not produced toxic effects in Wistar rats.
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Affiliation(s)
- L B Lima
- Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, 50740-521, Brazil
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Aragão TP, Lyra MMA, Silva MGB, Andrade BA, Ferreira PA, Ortega LF, da Silva SD, da Silva JCP, Fraga MCCA, Wanderley AG, Lafayette SSL. Toxicological reproductive study of Cassia occidentalis L. in female Wistar rats. J Ethnopharmacol 2009; 123:163-166. [PMID: 19429356 DOI: 10.1016/j.jep.2008.11.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2008] [Revised: 11/14/2008] [Accepted: 11/22/2008] [Indexed: 05/27/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cassia occidentalis L. (Leguminosae) has long been used as natural medicine in rainforests and other tropical regions for the treatment of inflammation, fever, liver disorders, constipation, worms, fungal infections, ulcers, respiratory infections, snakebite and as a potent abortifacient. AIM OF THE STUDY This study has investigated the effects of oral sub-acute administration of Cassia occidentalis during pregnancy in female Wistar rats. MATERIALS AND METHODS Three groups of pregnant rats were treated orally from the 1st to the 6th day (pre-implantation period) and from the 7th to the 14th day (organogenic period) of pregnancy, with doses of 250 and 500 mg/kg. On the 20th day of pregnancy, the animals were euthanized and reproductive parameters evaluated. RESULTS The results revealed no statistically significant differences between the control and treated groups in terms of offspring/dam relationship; fetuses, placentae and ovaries weights; number of implantation and resorption sites; number of corpora lutea in the ovaries and pre- and post-implantation loss rates. However, the presence of dead fetuses was registered in both doses of 250 and 500 mg/kg of Cassia occidentalis. CONCLUSIONS Further studies should therefore be conducted to obtain more detailed characteristics of the toxic effects of this species, the use of which is not recommended during pregnancy.
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Affiliation(s)
- T P Aragão
- Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, Pernambuco, 50740-521, Brazil
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Costa-Silva JH, Lima CR, Silva EJR, Araújo AV, Fraga MCCA, Ribeiro E Ribeiro A, Arruda AC, Lafayette SSL, Wanderley AG. Acute and subacute toxicity of the Carapa guianensis Aublet (Meliaceae) seed oil. J Ethnopharmacol 2008; 116:495-500. [PMID: 18281172 DOI: 10.1016/j.jep.2007.12.016] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2007] [Revised: 12/26/2007] [Accepted: 12/27/2007] [Indexed: 05/25/2023]
Abstract
Carapa guianensis (Meliaceae), known as Andiroba in Brazil, has been used by Amazon Rainforest indigenous communities for treatment of coughs, convulsions, skin diseases, arthritis, rheumatism, ear infections, to heal wounds and bruises and as an insect repellent. Carapa guianensis seed oil (SO) was evaluated for its acute and subacute toxicity (30 days) by the oral route in Wistar rats. In the acute toxicity test, SO (0.625-5.0g/kg, n=5/sex) did not produce any hazardous symptoms or deaths. The subacute treatment with SO (0.375, 0.75 and 1.5g/kg, n=10/group) failed to change body weight gain, food and water consumption. Hematological analysis showed no significant differences in any of the parameters examined. However, in the biochemical parameters, there was an increase in the alanine aminotransferase (ALT) serum level (29%) in the group SO 1.5g/kg. In addition, absolute and relative liver weights were increased at the doses of 0.75g/kg (23.4 and 19.1%) and 1.5g/kg (18.7 and 33.1%). In conclusion, acute and subacute administration of Carapa guianensis seed oil did not produce toxic effects in male Wistar rats. However, the increase in the ALT serum level and in both absolute and relative liver weights may indicate a possible hepatic toxicity.
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Affiliation(s)
- J H Costa-Silva
- Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, Pernambuco 50740-521, Brazil
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Santos APO, de Lima LS, Wanderley AG. Comparison between the drug treatment used in children up to five years of age treated in an emergency room and the guidelines established in the III Brazilian Consensus on Asthma Management. J Bras Pneumol 2007; 33:7-14. [PMID: 17568862 DOI: 10.1590/s1806-37132007000100005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2005] [Accepted: 05/17/2006] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE To evaluate the management of asthma attacks in children up to five years of age treated in the pediatric emergency room of a hospital in the metropolitan area of the city of Recife, Brazil, as well as to determine whether the way in which asthma attacks are managed can influence the duration of emergency room visits for such children. METHODS A descriptive, exploratory study employing a quantitative, cross-sectional approach. The study sample comprised 246 children treated for asthma attacks in an emergency room. The approach used was evaluated in comparison with the approach recommended in the III Brazilian Consensus on Asthma Management, as was the length of time each child spent in the emergency room. RESULTS In 69 (28.1%) of the cases, the medications were used in accordance with the Consensus guidelines. In 34 (13.8%) of the cases, the doses used were those recommended in the Consensus guidelines, and the guidelines regarding nebulization procedures were followed in 33 cases (13.4%). No correlation was found between the approach taken and the length of the emergency room visit. In the logistic regression analysis, we observed that the adjusted risk of being released from the emergency room sooner than recommended in the Consensus guidelines (a length of time sufficient to allow the response to the treatment to be analyzed) was four times and fifteen times greater, respectively, for children with mild persistent asthma and for those with intermittent asthma. CONCLUSION Although there are obstacles to using the asthma management approach recommended in the Consensus guidelines (such obstacles including the lack of familiarity with the guidelines on the part of the multidisciplinary team, as well as the lack of recommended material and therapeutic resources), the duration of emergency room visits was found to be related to the degree of asthma severity.
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Costa-Silva JH, Lyra MMA, Lima CR, Arruda VM, Araújo AV, Ribeiro e Ribeiro A, Arruda AC, Fraga MCCA, Lafayette SSL, Wanderley AG. A toxicological evaluation of the effect of Carapa guianensis Aublet on pregnancy in Wistar rats. J Ethnopharmacol 2007; 112:122-6. [PMID: 17368776 DOI: 10.1016/j.jep.2007.02.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2006] [Revised: 01/31/2007] [Accepted: 02/07/2007] [Indexed: 05/14/2023]
Abstract
The effects of the administration of Carapa guianensis Aublet (Meliaceae) seed oil were investigated during pregnancy in female Wistar rats. Five groups of pregnant rats (n=5-9 per group) were treated orally from the 7th to the 14th day of pregnancy (organogenic period), at doses of: 0, 0.375, 0.75, 1.5 and 3.0gkg(-1). On the 20th day of pregnancy, the animals were sacrificed and laparotomized to evaluate reproductive parameters. The results showed that there was no difference between the control and treated groups in terms of the number of live and dead fetuses, the dam-offspring relationship, the weight of the fetus, the weight of the placentae and ovaries, the number of implantation sites, the number of resorption sites, the number of corpora lutea in the ovaries, and the pre- and post-implantation loss rates. It is therefore concluded that administration of Carapa guianensis seed oil did not bring about any toxic effect on pregnancy in Wistar rats.
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Affiliation(s)
- J H Costa-Silva
- Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, Pernambuco 50740-521, Brazil
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Dimech GS, Gonçalves ES, Araújo AVD, Arruda VM, Baratella-Evêncio L, Wanderley AG. Avaliação do extrato hidroalcoólico de Mentha crispa sobre a performance reprodutiva em ratos Wistar. Rev bras farmacogn 2006. [DOI: 10.1590/s0102-695x2006000200004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Moura ACA, Silva ELF, Fraga MCA, Wanderley AG, Afiatpour P, Maia MBS. Antiinflammatory and chronic toxicity study of the leaves of Ageratum conyzoides L. in rats. Phytomedicine 2005; 12:138-42. [PMID: 15693721 DOI: 10.1016/j.phymed.2003.12.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The hydroalcoholic extract (HAE) of Ageratum conyzoides leaves was studied for its antiinflammatory effect on subacute (cotton pellet-induced granuloma) and chronic (formaldehyde-induced arthritis) models of inflammation in rats. The absence or presence of toxicity by prolonged use of HAE was also evaluated through biochemical and hematological analysis of rats blood samples using daily oral doses of 250 or 500 mg/kg body wt., during 90 days. The results showed that the group of rats treated with HAE (250 mg/kg body wt.; p.o.) had a 38.7% (p < 0.05) reduction in cotton-pellet granuloma. The development of chronically induced paw edema was also reduced significantly (p < 0.05) by the plant extract. The toxicity study did not show any treatment-related abnormalities in biochemical and hematological parameters. The biochemical analysis from blood samples drawn from group of rats treated orally with 500 mg/kg body wt. did, however, present 30.2% (p < 0.05) reduction of SGPT activity as compared to the corresponding control group. These results confirm the antiinflammatory properties of A. conyzoides, with no apparent hepatotoxicity.
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Affiliation(s)
- A C A Moura
- Laboratory of Natural Products, Department of Physiology and Pharmacology. Federal University of Pernambuco, Cidade Universitaria, CEP 50.000, Recife-PE, Brazil
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Albuquerque MCPA, Silva TG, Pitta MGR, Silva ACA, Silva PG, Malagueño E, Santana JV, Wanderley AG, Lima MCA, Galdino SL, Barbe J, Pitta IR. Synthesis and schistosomicidal activity of new substituted thioxo-imidazolidine compounds. Pharmazie 2005; 60:13-7. [PMID: 15700773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Synthesis and physico-chemical properties of 3-benzyl-5-(4-fluoro-benzylidene)-1-methyl-2-thioxo-imidazolidin-4-ones, 5-benzylidene-3-(4-nitro-benzyl)-2-thioxo-imidazolidin-4-ones and 4-acridin-9-ylmethylene-1-benzyl-5-thioxo-imidazolidin-2-ones compounds are described. These thioxo-imidazolidine derivatives were prepared by alkylation and condensation with 4-fluoro-benzaldehyde or nucleophilic Michael addition with cyanoacrylates. The schistosomicidal activity of 3-benzyl-5-(4-fluoro-benzylidene)-1-methyl-2-thioxo-imidazolidin-4-one compounds was evaluated.
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Affiliation(s)
- M C P A Albuquerque
- Laboratorio de Imunopatologia Keizo Asami - LIKA, Centro de Ciências Biológicas, Universidade Federal de Pernambuco - UFPE, Recife, Brasil
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Lira AAM, Sester EDA, Abreu LRP, Silva LBLD, Wanderley AG, Santana DPD. Desenvolvimento preliminar de gel de lapachol: estudo de permeação in vitro. ACTA ACUST UNITED AC 2004. [DOI: 10.1590/s1516-93322004000100007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Noël F, Quintas LE, Freitas E, Caricati-Neto A, Lafayette SS, Wanderley AG, Jurkiewicz A. Quantitative analysis of the high-affinity binding sites for [3H]ouabain in the rat vas deferens and their immunological identification as the alpha 2 isoform of Na+/K(+)-ATPase. Biochem Pharmacol 1998; 55:1531-5. [PMID: 10076547 DOI: 10.1016/s0006-2952(98)00013-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Binding assays were performed with [3H]ouabain to investigate the presence of, and to characterize, a Na+/K(+)-ATPase isoform with high affinity for cardiac glycosides in the rat vas deferens. Nonlinear regression analysis of equilibrium experiments carried out with crude preparations in a Mg-Pi medium indicated the presence of high-affinity sites characterized with good precision (individual coefficients of variation = 11-35%) by their density (Bmax = 0.42 to 0.72 pmol/mg protein) and dissociation constant (Kd = 0.069 to 0.136 microM) values. The values of the dissociation rate constant (kappa-1) and the association rate constant (kappa+1) for these sites were 0.151 to 0.267 min-1 and 2.87 to 3.60 microM-1.min-1, respectively. A higher number of low-affinity sites (Kd around 15 microM), supposed to correspond to the alpha 1 isoform, was also identified, but their Kd and Bmax values were not quantified precisely in this crude preparation. Western blot assays indicated hybridization with specific anti-alpha 1 and anti-alpha 2 isoform antibodies but not with anti-alpha 3 isoform antibody. Taken together, the present results indicate the existence of a low proportion of the alpha 2 isoform of Na+/K(+)-ATPase in the rat vas deferens that can be quantified precisely by [3H]ouabain binding even in a crude membrane preparation that is suitable for studies under conditions of plasticity.
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Affiliation(s)
- F Noël
- Departamento de Farmacologia Básica e Clínica, Universidade Federal do Rio de Janeiro, Brazil.
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Caricati-Neto A, Pupo AS, Wanderley AG, Nuñez-Vergara M, Koh IH, Jurkiewicz NH, Jurkiewicz A. Role of the epithelium in the release of contractile agents from the rat vas deferens by clonidine. Ann N Y Acad Sci 1995; 763:436-9. [PMID: 7677357 DOI: 10.1111/j.1749-6632.1995.tb32433.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- A Caricati-Neto
- Department of Pharmacology, Escola Paulista de Medicina, São Paulo, Brazil
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Jurkiewicz A, Lafayette SS, Nunes SH, Martini LC, Do Carmo LG, Wanderley AG, Jurkiewicz NH. Decreased density of binding sites for the Ca2+ channel antagonist [3H]isradipine after denervation of rat vas deferens. Eur J Pharmacol 1994; 256:329-33. [PMID: 8045278 DOI: 10.1016/0014-2999(94)90559-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Radioligand binding assays were performed with the selective antagonist of dihydropyridine-sensitive Ca2+ channels [3H]PN200-110 (isradipine) in rat vas deferens, before and 7 days after denervation, and data were compared with those obtained for K(+)-induced contractions, which are Ca(2+)-dependent. The density (Bmax) of dihydropyridine binding sites was decreased to almost one-third of its normal value after denervation. The respective affinity (KD) was not significantly changed. In addition, it was observed that the K(+)-induced tonic contraction, which corresponded to 55 +/- 2% of the respective phasic contraction, was decreased to 41 +/- 3% after denervation. It is assumed that the decreased density of Ca2+ channels causes a decrease in K(+)-induced influx of Ca2+ and consequently of the corresponding tonic contraction. These results indicate that autonomic innervation can regulate the density of dihydropyridine-sensitive Ca2+ channels in the rat vas deferens.
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Affiliation(s)
- A Jurkiewicz
- Department of Pharmacology, Escola Paulista de Medicina, São Paulo, Brazil
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Hargreaves AB, Wanderley AG. [Colorimetric method in determining enzymatic activity of maltase of "Aspergillus orizae"]. Rev Bras Biol 1966; 26:377-83. [PMID: 5999441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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