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Romero Caimi G, Gorzalczany S, Bonazzola P, Deza Z, Rosón MI, Alvarez L, Castilla R. Angiotensin II type 1 receptor is involved in hypertension and vascular alterations caused by environmental toxicant hexachlorobenzene. Toxicol Rep 2021; 8:1599-1606. [PMID: 34522623 PMCID: PMC8424126 DOI: 10.1016/j.toxrep.2021.08.009] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 07/04/2021] [Accepted: 08/28/2021] [Indexed: 11/30/2022] Open
Abstract
Environmental hexachlorobenzene (HCB) increases blood pressure (BP) in female rats, causing alterations in arterial structure and function. Here we study the role of Angiotensin II receptor type 1 (AT1) in HCB-induced hypertension through the use of AT1 antagonist losartan. HCB-treated male rats showed a 22.7% increase in BP which was prevented by losartan. Losartan blocked HCB-induced changes in arterial morphology (decreased aorta cell number and increased wall thickness). Losartan also prevented HCB-induced alterations in artery relaxation by acetylcholine and nitroprusside but not the reduction in the maximum contraction by phenylephrine. Losartan rescued arterial molecular alterations caused by HCB (i.e. an increase in TGF-β1 and AT1 expression and a decrease in eNOS expression and nitrite levels) and reduced hydrogen sulfide plasma concentration. In conclusion: in this work we demonstrate that AT1 activity is involved in HCB effects on the vascular system leading to hypertension.
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Key Words
- AT1
- AT1, angiotensin II receptor type 1
- Ach, acetylcholine
- AhR, aryl hydrocarbon receptor
- Ang II, angiotensin II
- Aorta
- BP, systolic blood pressure
- H&E, hematoxylin and eosin
- HCB, hexachlorobenzene
- Hexachlorobenzene
- Hypertension
- Losartan
- NO, nitric oxide
- PCBs, polychlorinated biphenyls
- POPs, persistent organic pollutant
- Phe, phenylephrine
- SNP, nitroprusside
- TGF-β1, Transforming Growth Factor-β1
- eNOS, endothelial nitric oxide synthase
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Affiliation(s)
- Giselle Romero Caimi
- Universidad de Buenos Aires, Facultad de Medicina, Departamento de Bioquímica Humana, Laboratorio de Efectos Biológicos de Contaminantes Ambientales, Paraguay 2155, C1121ABG Ciudad Autónoma de Buenos Aires, Argentina
| | - Susana Gorzalczany
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Farmacología, Cátedra de Farmacología, Junín 956, C1113AAD, Ciudad Autónoma de Buenos Aires, Argentina
| | - Patricia Bonazzola
- Universidad de Buenos Aires, CONICET, Instituto Alberto C. Taquini de Investigaciones en Medicina Traslacional (IATIMET), Marcelo T. de Alvear 2270, C1122AAJ, Ciudad Autónoma de Buenos Aires, Argentina
| | - Zahira Deza
- Universidad de Buenos Aires, Facultad de Medicina, Departamento de Bioquímica Humana, Laboratorio de Efectos Biológicos de Contaminantes Ambientales, Paraguay 2155, C1121ABG Ciudad Autónoma de Buenos Aires, Argentina
| | - María Inés Rosón
- Universidad de Buenos Aires, CONICET, Instituto Alberto C. Taquini de Investigaciones en Medicina Traslacional (IATIMET), Marcelo T. de Alvear 2270, C1122AAJ, Ciudad Autónoma de Buenos Aires, Argentina
| | - Laura Alvarez
- Universidad de Buenos Aires, Facultad de Medicina, Departamento de Bioquímica Humana, Laboratorio de Efectos Biológicos de Contaminantes Ambientales, Paraguay 2155, C1121ABG Ciudad Autónoma de Buenos Aires, Argentina
| | - Rocío Castilla
- Universidad de Buenos Aires, CONICET, Instituto Alberto C. Taquini de Investigaciones en Medicina Traslacional (IATIMET), Marcelo T. de Alvear 2270, C1122AAJ, Ciudad Autónoma de Buenos Aires, Argentina
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Anzoise ML, Basso AR, Del Mauro JS, Carranza A, Ordieres GL, Gorzalczany S. Potential usefulness of methyl gallate in the treatment of experimental colitis. Inflammopharmacology 2017; 26:839-849. [PMID: 29116460 DOI: 10.1007/s10787-017-0412-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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: 08/01/2017] [Accepted: 10/19/2017] [Indexed: 02/07/2023]
Abstract
Methyl gallate is a gallotannin widely distributed in nature. Previous studies have demonstrated its antioxidant, anti-inflammatory, antimicrobial and anti-tumor activities. In the present study, the activity of methyl gallate on experimental models of inflammatory bowel disease has been investigated. Experimental colitis was induced in Sprague-Dawley rats through the intracolonic instillation of an acetic acid solution (2 mL, 4% v/v). Methyl gallate (100 and 300 mg/kg, p.o.) and the reference drug mesalazine (100 mg/kg, p.o.) were tested. Methyl gallate induced a significant reduction in the colon weight/length ratio and macroscopic lesion score. Besides, the malondialdehyde content and the GSSG/GSH ratio were remarkably decreased. Furthermore, the administration of methyl gallate reduced the expression of COX2, IL-6, TNFα and the severity of microscopic tissue damage induced by acetic acid, while the mean goblet cell density was significantly higher in both the group treated with methyl gallate and the one treated with mesalazine, in comparison with untreated animals. The Na+K+ATPase pump activity was recovered in treated groups (control: 827.2 ± 59.6, colitis: 311.6 ± 54.8, methyl gallate 100 mg/kg: 642.2 ± 175.0, methyl gallate 300 mg/kg: 809.7 ± 100.6, mesalazine: 525.3 ± 81.7). Methyl gallate was also found to induce a significant reduction in the castor oil-induced intestinal motility in Swiss mice, decreasing the peristalsis by 74.5 and 58.82% at 100 and 300 mg/kg p.o., respectively. This compound also antagonized the jejunum contractions induced by Ach and CaCl2. This study demonstrates that methyl gallate exerts beneficial effects in a preclinical model of intestinal disorders.
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Affiliation(s)
- María Laura Anzoise
- Pharmacology Chair, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, C1113AAD, Buenos Aires, Argentina
| | - Angeles Rodríguez Basso
- Pharmacology Chair, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, C1113AAD, Buenos Aires, Argentina
| | - Julieta Sofía Del Mauro
- Pharmacology Chair, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, C1113AAD, Buenos Aires, Argentina
| | - Andrea Carranza
- Instituto de Investigaciones Cardiológicas, Facultad de Medicina, Universidad de Buenos Aires, M T de Alvear 2270, Buenos Aires, Argentina
| | - Graciela López Ordieres
- Pharmacology Chair, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, C1113AAD, Buenos Aires, Argentina
| | - Susana Gorzalczany
- Pharmacology Chair, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, C1113AAD, Buenos Aires, Argentina.
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Cao G, Della Penna SL, Kouyoumdzian NM, Choi MR, Gorzalczany S, Fernández BE, Toblli JE, Rosón MI. Immunohistochemical expression of intrarenal renin angiotensin system components in response to tempol in rats fed a high salt diet. World J Nephrol 2017; 6:29-40. [PMID: 28101449 PMCID: PMC5215206 DOI: 10.5527/wjn.v6.i1.29] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 09/06/2016] [Accepted: 11/02/2016] [Indexed: 02/06/2023] Open
Abstract
AIM To determine the effect of tempol in normal rats fed high salt on arterial pressure and the balance between antagonist components of the renal renin-angiotensin system.
METHODS Sprague-Dawley rats were fed with 8% NaCl high-salt (HS) or 0.4% NaCl (normal-salt, NS) diet for 3 wk, with or without tempol (T) (1 mmol/L, administered in drinking water). Mean arterial pressure (MAP), glomerular filtration rate (GFR), and urinary sodium excretion (UVNa) were measured. We evaluated angiotensin II (Ang II), angiotensin 1-7 (Ang 1-7), angiotensin converting enzyme 2 (ACE2), mas receptor (MasR), angiotensin type 1 receptor (AT1R) and angiotensin type 2 receptor (AT2R) in renal tissues by immunohistochemistry.
RESULTS The intake of high sodium produced a slight but significant increase in MAP and differentially regulated components of the renal renin-angiotensin system (RAS). This included an increase in Ang II and AT1R, and decrease in ACE-2 staining intensity using immunohistochemistry. Antioxidant supplementation with tempol increased natriuresis and GFR, prevented changes in blood pressure and reversed the imbalance of renal RAS components. This includes a decrease in Ang II and AT1R, as increase in AT2, ACE2, Ang (1-7) and MasR staining intensity using immunohistochemistry. In addition, the natriuretic effects of tempol were observed in NS-T group, which showed an increased staining intensity of AT2, ACE2, Ang (1-7) and MasR.
CONCLUSION These findings suggest that a high salt diet leads to changes in the homeostasis and balance between opposing components of the renal RAS in hypertension to favour an increase in Ang II. Chronic antioxidant supplementation can modulate the balance between the natriuretic and antinatriuretic components of the renal RAS.
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Anzoise ML, Marrassini C, Bach H, Gorzalczany S. Beneficial properties of Passiflora caerulea on experimental colitis. J Ethnopharmacol 2016; 194:137-145. [PMID: 27596328 DOI: 10.1016/j.jep.2016.09.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [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: 05/11/2016] [Revised: 08/31/2016] [Accepted: 09/02/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Passiflora caerulea L. (Passifloraceae) is a medicinal plant commonly used in traditional medicine in South America for different pathologies associated with the gastrointestinal tract. AIM OF THE STUDY In the present study, the activity of the ethanolic extract of P. caerulea on an experimental colitis model related to inflammatory bowel disease has been investigated. MATERIALS AND METHODS Colitis was induced by intracolonic instillation of a 2mL of 4% (v/v) acetic acid solution. Macroscopic scoring, myeloperoxidase activity and thiobarbituric acid reactive substances levels were evaluated on isolated colon mucosae. The histopathological studies of colon mucosae were performed by hematoxylin and eosin and Alcian blue staining. Diarrhoea was induced by the administration of castor oil (0.3mL/mouse). The first watery defecation time, the total amount of solid, semi-solid and watery stools and the amount of watery stools were determined. The effect of the extract on a cumulative concentration-response curve of acetylcholine and CaCl2 on isolated rat jejunum was also evaluated. The phytochemical analysis was performed. RESULTS The extract (250mg/kg, p.o.) induced a significant reduction in the weight/length ratio, the macroscopic lesion score, TBARS levels and the microscopic tissue damage when compared with the acetic acid-treated group of animals. P. caerulea (125mg/kg, p.o.) decreased significantly the amount of watery stools in the castor oil-induced-diarrhoea model. Moreover, the P. caerulea extract antagonized the jejunum contractions induced by Ach (Emax for 0.3mg/mL: 76.25%; Emax for 1mg/mL: 63.47%; Emax for 3mg/mL: 42.01%) and CaCl2 (Emax for 0.3mg/mL: 75.69%; Emax for1 mg/mL: 56.1%; Emax for 3mg/mL: 53.4%). Isoorientin, vitexin, isovitexin, and vicenin-2 were identified in the extract. CONCLUSION P. caerulea showed anti-inflammatory, anti-diarrhoeal and spasmolityc activities on preclinical models.
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Affiliation(s)
- M L Anzoise
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Farmacología, Junín 956, C1113AAD Buenos Aires, Argentina
| | - C Marrassini
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Farmacognosia,IQUIMEFA, CONICET, Junín 956, C1113AAD Buenos Aires, Argentina
| | - H Bach
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Farmacobotánica, Junín 956, C1113AAD Buenos Aires, Argentina
| | - S Gorzalczany
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Farmacología, Junín 956, C1113AAD Buenos Aires, Argentina.
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Mikusic NLR, Rosón MI, Penna SLD, Choi MR, Gorzalczany S, Zotta E, Toblli JE, Fernández BE. Reduction of eNOS in Vascular Smooth Muscle by Salt Independently of Hypertension. Antiinflamm Antiallergy Agents Med Chem 2016; 15:135-144. [PMID: 27666396 DOI: 10.2174/1871523015666160922164224] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 02/23/2016] [Revised: 09/08/2016] [Accepted: 09/13/2016] [Indexed: 11/22/2022]
Abstract
BACKGROUND Endothelial nitric oxide synthase (eNOS) is known to be expressed in endothelium and smooth muscle cells of arteries. The aim of this study was to investigate the expression of eNOS in intimal and medial layer of aorta from rats fed with a high salt diet and its modulation by losartan and tempol. METHODS Rats were fed during three weeks with: normal salt diet (NS, 0.4% NaCl); high salt diet (HS, 8% NaCl); NS plus tempol 1 mM (NS-T); HS plus tempol (HS-T); NS plus losartan 40mg.kg-1 (NS-L) and HS plus losartan (HS-L). Systolic blood pressure was recorded by the tail cuff method. Rats were then anaesthetized and the thoracic aorta and small arteries (bronchial branches of aorta) were processed to evaluate the expression of eNOS and aquaporin-1 (AQP-1) by immunohistochemistry. RESULTS HS group showed increased systolic blood pressure, increased eNOS and AQP-1 immunoexpression in the aorta intimal layer, and decreased eNOS immunoexpression in the aorta medial layer, respect to NS group. Losartan and tempol prevented hypertension and changes in the expression of eNOS and AQP-1 of the intimal layer. However, only tempol increased the expression of eNOS elicited by sodium overload in the medial layer of the aorta and small arteries respect to HS group. CONCLUSIONS A high salt diet decreases eNOS expression in vascular smooth muscle layers of aorta and small arteries, which is reversed by tempol. These results suggest an adverse effect of oxidative stress on vascular eNOS in rats fed a high salt diet independently of hypertension.
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Affiliation(s)
- Natalia L. Rukavina Mikusic
- Cardiological Research Institute, National Council of Scientific and Technical Research, Buenos Aires, Argentina
| | - María I. Rosón
- Cardiological Research Institute, National Council of Scientific and Technical Research, Buenos Aires, Argentina
| | - Silvana L. Della Penna
- Cardiological Research Institute, National Council of Scientific and Technical Research, Buenos Aires, Argentina
| | - Marcelo R Choi
- Cardiological Research Institute, National Council of Scientific and Technical Research, Buenos Aires, Argentina
- Department of Pathophysiology, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
| | - Susana Gorzalczany
- Department of Pharmacology, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
| | - Elsa Zotta
- Department of Pathophysiology, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
| | - Jorge E Toblli
- Cardiological Research Institute, National Council of Scientific and Technical Research, Buenos Aires, Argentina
| | - Belisario E Fernández
- Cardiological Research Institute, National Council of Scientific and Technical Research, Buenos Aires, Argentina
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Lucero D, López GI, Gorzalczany S, Duarte M, González Ballerga E, Sordá J, Schreier L, Zago V. Alterations in triglyceride rich lipoproteins are related to endothelial dysfunction in metabolic syndrome. Clin Biochem 2016; 49:932-5. [DOI: 10.1016/j.clinbiochem.2016.04.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 04/13/2016] [Accepted: 04/25/2016] [Indexed: 11/29/2022]
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Kouyoumdzian NM, Rukavina Mikusic NL, Kravetz MC, Lee BM, Carranza A, Del Mauro JS, Pandolfo M, Gironacci MM, Gorzalczany S, Toblli JE, Fernández BE, Choi MR. Atrial Natriuretic Peptide Stimulates Dopamine Tubular Transport by Organic Cation Transporters: A Novel Mechanism to Enhance Renal Sodium Excretion. PLoS One 2016; 11:e0157487. [PMID: 27392042 PMCID: PMC4938554 DOI: 10.1371/journal.pone.0157487] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 05/30/2016] [Indexed: 01/11/2023] Open
Abstract
The aim of this study was to demonstrate the effects of atrial natriuretic peptide (ANP) on organic cation transporters (OCTs) expression and activity, and its consequences on dopamine urinary levels, Na+, K+-ATPase activity and renal function. Male Sprague Dawley rats were infused with isotonic saline solution during 120 minutes and randomized in nine different groups: control, pargyline plus tolcapone (P+T), ANP, dopamine (DA), D-22, DA+D-22, ANP+D-22, ANP+DA and ANP+DA+D-22. Renal functional parameters were determined and urinary dopamine concentration was quantified by HPLC. Expression of OCTs and D1-receptor in membrane preparations from renal cortex tissues were determined by western blot and Na+, K+-ATPase activity was determined using in vitro enzyme assay. 3H-DA renal uptake was determined in vitro. Compared to P+T group, ANP and dopamine infusion increased diuresis, urinary sodium and dopamine excretion significantly. These effects were more pronounced in ANP+DA group and reversed by OCTs blockade by D-22, demonstrating that OCTs are implied in ANP stimulated-DA uptake and transport in renal tissues. The activity of Na+, K+-ATPase exhibited a similar fashion when it was measured in the same experimental groups. Although OCTs and D1-receptor protein expression were not modified by ANP, OCTs-dependent-dopamine tubular uptake was increased by ANP through activation of NPR-A receptor and protein kinase G as signaling pathway. This effect was reflected by an increase in urinary dopamine excretion, natriuresis, diuresis and decreased Na+, K+-ATPase activity. OCTs represent a novel target that links the activity of ANP and dopamine together in a common mechanism to enhance their natriuretic and diuretic effects.
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Affiliation(s)
- Nicolás M. Kouyoumdzian
- Cardiological Research Institute, National Scientific and Technical Research Council, Buenos Aires, Argentina
- Pathophysiology and Clinical Biochemistry Institute, Buenos Aires, Argentina
| | - Natalia L. Rukavina Mikusic
- Cardiological Research Institute, National Scientific and Technical Research Council, Buenos Aires, Argentina
- Pathophysiology and Clinical Biochemistry Institute, Buenos Aires, Argentina
| | - María C. Kravetz
- Department of Pharmacology, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
| | - Brenda M. Lee
- Department of General Surgery, Johns Hopkins Hospital, Baltimore, Maryland, United States of America
| | - Andrea Carranza
- Department of Pharmacology, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
| | - Julieta S. Del Mauro
- Department of Pharmacology, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
| | - Marcela Pandolfo
- Pathophysiology and Clinical Biochemistry Institute, Buenos Aires, Argentina
| | - Mariela M. Gironacci
- Department of Biological Chemistry, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
| | - Susana Gorzalczany
- Department of Pharmacology, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
| | - Jorge E. Toblli
- Cardiological Research Institute, National Scientific and Technical Research Council, Buenos Aires, Argentina
- Deutsch Hospital, Buenos Aires, Argentina
| | - Belisario E. Fernández
- Cardiological Research Institute, National Scientific and Technical Research Council, Buenos Aires, Argentina
- Pathophysiology and Clinical Biochemistry Institute, Buenos Aires, Argentina
| | - Marcelo R. Choi
- Cardiological Research Institute, National Scientific and Technical Research Council, Buenos Aires, Argentina
- Pathophysiology and Clinical Biochemistry Institute, Buenos Aires, Argentina
- Department of Anatomy and Histology, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
- Department of Pathophysiology, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
- * E-mail:
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K. Han Y, G. Calvo R, N. Faudone S, Zitto G, Gorzalczany S, Wolfenson A, Bonafede S, A. Rosasco M, I. Segall A. Enhancement of Dissolution Rate of Furosemide Using a Solid Dispersion with D-Glucosamine HCl. CURR PHARM ANAL 2016. [DOI: 10.2174/1573412911666150817223836] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Salerno C, Carlucci AM, Gorzalczany S, Bregni C. In vitro Inhibition of Leishmania braziliensis Promastigotes Growth by a Fluconazole Microemulsion. ACTA ACUST UNITED AC 2016. [DOI: 10.4172/2329-9053.1000115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Yrbas MDLA, Morucci F, Alonso R, Gorzalczany S. Pharmacological mechanism underlying the antinociceptive activity of vanillic acid. Pharmacol Biochem Behav 2015; 132:88-95. [DOI: 10.1016/j.pbb.2015.02.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 02/12/2015] [Accepted: 02/16/2015] [Indexed: 12/23/2022]
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Riedel R, Marrassini C, Anesini C, Gorzalczany S. Anti-inflammatory and antinociceptive activity of Urera aurantiaca. Phytother Res 2014; 29:59-66. [PMID: 25256913 DOI: 10.1002/ptr.5226] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2014] [Revised: 08/21/2014] [Accepted: 08/26/2014] [Indexed: 11/06/2022]
Abstract
Urera aurantiaca Wedd. (Urticaceae) is a medicinal plant commonly used in traditional medicine to relieve pain in inflammatory processes. In the present study, the in vivo anti-inflammatory and antinociceptive effects of U. aurantiaca methanolic extract and its possible mechanisms of action were investigated. The extract showed anti-inflammatory activity in the ear edema in mice test (34.3% inhibition), myeloperoxidase (MPO) activity was markedly reduced in animals administered with the extract: within 49.6% and 68.5%. In the histological analysis, intense dermal edema and intense cellular infiltration of inflammatory cells were markedly reduced in the ear tissue of the animals treated with the extract. In the carrageenan-induced hind paw edema in rats assay the extract provoked a significant inhibition of the inflammation (45.5%, 5 h after the treatment) and the MPO activity was markedly reduced (maximum inhibition 71.7%), The extract also exhibited significant and dose-dependent inhibitory effect on the increased vascular permeability induced by acetic acid. The extract presented antioxidant activity in both 2,2-diphenyl-1-picrylhydrazyl and 2,2'-azinobis 3-ethylbenzothiazoline 6-sulfonic acid tests and its total phenol content was 35.4 ± 0.06 mg GAE/g of extract. Also, the extract produced significant inhibition on nociception induced by acetic acid (ED50 : 8.7 mg/kg, i.p.) administered intraperitoneally and orally. Naloxone significantly prevented this activity.
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Affiliation(s)
- R Riedel
- Cátedra de Farmacología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, C1113AAD, Buenos Aires, Argentina
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Abstract
CONTEXT The genus Urtica has been known since ancient times. It has known to be useful for the treatment of different human ailments. OBJECTIVE The present work evaluated the neuropharmacological effects of a hydroalcoholic extract of Urtica circularis (Hicken) Sorarú (Urticaceae). materials and method: The effect on central nervous system of U. circularis hydroalcoholic extract (from leaves and stems) administered by the intraperitoneal route in mice was evaluated by several tests: Pentobarbital- and midazolam-induced hypnosis, open field, hole board, elevated plus-maze and forced swimming. Phytochemical analysis was performed by high-performance liquid chromatography. RESULTS A total of 300 mg/kg i.p. of the extract produced a significant prolongation of pentobarbital- (40 mg/kg i.p.; 60.1 min versus 25.4 min) and midazolam- (50 mg/kg i.v.; 53.4 min versus 25.1 min) induced sleeping time. The extract's administration caused a marked reduction of the head-dipping response (DE50: 373 mg/kg i.p.) in the hole-board test. Urtica circularis extract (DE50: 46 mg/kg i.p.) reduced the spontaneous locomotor activity in the open field test. Flumazenil and atropine significantly antagonized the extract's effect on the locomotor activity. No motor coordination disturbance was observed in the rota rod test at any doses. In the forced swimming test, the extract did not produce any change in the immobility time and it had no significant effects in elevated plus maze test. The phytochemical analysis revealed the presence of chlorogenic acid, vanillic acid, caffeic acid, vicenin-2, p-cumaric acid, ferulic acid, vitexin and isovitexin. CONCLUSION This study revealed that U. circularis hydroalcoholic extract possesses sedative activity, facilitating GABAergic and cholinergic transmission.
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Affiliation(s)
- María Laura Anzoise
- Cátedra de Farmacología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
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Zago V, Gorzalczany S, Lucero D, Taira C, Schreier L. Role of HDL in neutralizing the VLDL effect on endothelial dysfunction. Microvasc Res 2013; 89:153-8. [DOI: 10.1016/j.mvr.2013.06.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Revised: 06/03/2013] [Accepted: 06/07/2013] [Indexed: 11/26/2022]
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Alcalde Bahamonde SM, Flores ML, Córdoba OL, Taira CA, Gorzalczany S. Antinociceptive and anti-inflammatory activities of an aqueous extract of Chiliotrichum diffusum. Revista Brasileira de Farmacognosia 2013. [DOI: 10.1590/s0102-695x2013005000051] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [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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Salerno C, Chiappetta DA, Arechavala A, Gorzalczany S, Scioscia SL, Bregni C. Lipid-based microtubes for topical delivery of Amphotericin B. Colloids Surf B Biointerfaces 2013; 107:160-6. [DOI: 10.1016/j.colsurfb.2013.02.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Accepted: 02/04/2013] [Indexed: 11/30/2022]
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Gorzalczany S, Moscatelli V, Ferraro G. Artemisia copa aqueous extract as vasorelaxant and hypotensive agent. J Ethnopharmacol 2013; 148:56-61. [PMID: 23588093 DOI: 10.1016/j.jep.2013.03.061] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 03/18/2013] [Accepted: 03/22/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Artemisia copa Phil. (Asteraceae) is a medicinal plant commonly used in traditional medicine in Argentina. AIM OF THE STUDY The vasorelaxant and hypotensive activities of the aqueous extract of Artemisia copa have been investigated. MATERIALS AND METHODS The in vitro effect of the extract and isolated compounds from Artemisia copa was investigated using isolated rat aortic rings. The acute effect caused by the intravenous (i.v.) infusion (0.1-300mg/kg) on blood pressure and heart rate was evaluated in spontaneous hypertensive rats. In addition, a phytochemical analysis of the extract was performed by HPLC. RESULTS Artemisia copa had a relaxant effect in endothelium-intact aortic rings that had been pre-contracted with 10(-7)M phenylephrine (Emax=96.7±1.3%, EC50=1.1mg/ml), 10(-5)M 5-hydroxytriptamine (Emax=96.7±3.5%, EC50=1.5mg/ml) and 80mM KCl (Emax=97.9± 4.4%, EC50=1.6mg/ml). In denuded aortic rings contracted by phenylephrine, a similar pattern was observed (Emax=92.7±6.5%, EC50=1.8mg/ml). l-NAME, indomethacin, tetraethylammonium and glibenclamide were not able to block the relaxation induced by the extract. Nevertheless, the pre-treatment with Artemisia copa attenuated the CaCl2-induced contraction in a concentration-dependent manner (Emax: 86% of inhibition for 3mg/ml and 52% de-inhibition for 1mg/ml). This pre-treatment also induced a significant attenuation of the norepinephrine-induced contraction in a concentration-dependent manner (Emax: 72.7% of inhibition for 3mg/ml and 27% de inhibition for 1mg/ml) in a Ca(2+) free medium. Upon analyzing the composition of the extract, the presence of p-coumaric acid, isovitexin, luteolin and chrysoeriol were found. Luteolin (CE50: 1.5μg/ml), chrysoeriol (CE50: 13.2μg/ml) and p-coumaric acid (CE50: 95.2μg/ml), isolated from the aqueous extract, caused dilatation of thoracic aortic rings pre-contracted with phenylephrine. Artemisia copa administered i.v. also induced a decrease in the mean arterial pressure but did not affect the heart rate in hypertensive rats. CONCLUSIONS The aqueous extract of Artemisia copa proved to have vasorelaxing and hypotensive effects through the inhibition of Ca(2+) influx via membranous calcium channels and intracellular stores. The presence of luteolin, chrysoeriol and p-coumaric acid found in this plant could be involved in this effect.
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Affiliation(s)
- Susana Gorzalczany
- Cátedra de Farmacología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, C1113AAD Buenos Aires, Argentina.
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Gorzalczany S, Moscatelli V, Acevedo C, Ferraro G. Spasmolytic activity ofArtemisia copaaqueous extract and isolated compounds. Nat Prod Res 2013; 27:1007-11. [DOI: 10.1080/14786419.2012.688049] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Morucci F, Lopez P, Miño J, Ferraro G, Gorzalczany S. Antinociceptive activity of aqueous extract and isolated compounds of Lithrea molleoides. J Ethnopharmacol 2012; 142:401-406. [PMID: 22609809 DOI: 10.1016/j.jep.2012.05.009] [Citation(s) in RCA: 15] [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: 02/06/2012] [Revised: 04/25/2012] [Accepted: 05/06/2012] [Indexed: 06/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Lithrea molleoides (Vell.) Engl. (Anacardiaceae) is a medicinal plant commonly used in traditional medicine in South America. AIM OF THE STUDY In the present study, the in vivo antinociceptive effect of L. molleoides' aqueous extract and its isolated compounds has been investigated. MATERIALS AND METHODS Antinociceptive activity was evaluated through writhing, formalin and hot plate tests in mice. The phytochemical analysis was performed. RESULTS The extract produced significant inhibition on nociception induced by acetic acid (ED50: 8.7 mg/kg, i.p.) and formalin (ED50: 7.7 mg/kg, i.p.) administered intraperitoneally and also orally. Yohimbine diminished the activity of the extract in the acetic acid test meanwhile haloperidol enhanced its effect. Two majority compounds, shikimic and vanillic acid were active in chemical nociceptive models used in this work, producing the highest inhibition of the writhing response at a dose of 30 mg/kg i.p. (55.4% and 57.1%, respectively) meanwhile at 100 mg/kg p.o. produced a slight response (23.3% and 23.9%, respectively). CONCLUSIONS These results suggest that L. molleoides' aqueous extract produced antinociception possibly related to the presence of shikimic and vanillic acid. The adrenergic and dopaminergic systems seem to be involved in the mechanism of antinociception of the extract.
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Affiliation(s)
- Florencia Morucci
- Cátedra de Farmacología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, C1113AAD Buenos Aires, Argentina
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López P, Gorzalczany S, Acevedo C, Alonso R, Ferraro G. Chemical study and anti-inflammatory activity of Capsicum chacoense and C. baccatum. Rev bras farmacogn 2012. [DOI: 10.1590/s0102-695x2011005000187] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [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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Marrassini C, Davicino R, Acevedo C, Anesini C, Gorzalczany S, Ferraro G. Vicenin-2, a potential anti-inflammatory constituent of Urtica circularis. J Nat Prod 2011; 74:1503-1507. [PMID: 21608987 DOI: 10.1021/np100937e] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Vicenin-2 (1), a flavonoid glycoside, was isolated and identified from an ethanol extract of the aerial parts of Urtica circularis. This crude extract was found to possess significant anti-inflammatory activity in a carrageenan-induced rat hind paw edema model (41.5% inhibition at a dose of 300 mg/kg; ip). The effects of 1 on several inflammatory mediators were investigated. In cultured murine macrophages, this compound modified LPS-induced total nitrite and TNF-α production, in addition to the LPS-induced translocation of the nuclear factor NF-κB.
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Affiliation(s)
- Carla Marrassini
- Cátedra de Farmacognosia-IQUIMEFA CONICET, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, C1113AAD Buenos Aires, Argentina.
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Gorzalczany S, Marrassini C, Miño J, Acevedo C, Ferraro G. Antinociceptive activity of ethanolic extract and isolated compounds of Urtica circularis. J Ethnopharmacol 2011; 134:733-738. [PMID: 21277970 DOI: 10.1016/j.jep.2011.01.025] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Revised: 01/14/2011] [Accepted: 01/19/2011] [Indexed: 05/30/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Urtica circularis (Hicken) Sorarú is a medicinal plant commonly used in traditional medicine to relieve pain in inflammatory processes. AIM OF THE STUDY In the present study, the in vivo antinociceptive effect of Urtica circularis ethanolic extract and its isolated compounds has been investigated. MATERIALS AND METHODS Antinociceptive activity was evaluated through writhing, formalin and hot plate tests in mice. The phytochemical analysis was performed. RESULTS The extract produced significant inhibition on nociception induced by acetic acid (ED50: 72.2mg/kg, i.p.) and formalin (ED50: 15.8 mg/kg, i.p.) administered intraperitoneally and also orally. Atropine diminished the activity of the extract in the acetic acid test. In this model, at dose of 10mg/kg i.p., vitexin was the most active of the isolated compounds (inhibition of 91%), and chlorogenic acid, caffeic acid and vicenin-2 (6,8-di-C-glucosyl apigenin) produced an inhibition of 72%, 41% and 41%, respectively, whereas apigenin did not show any activity. CONCLUSIONS These results suggest that Urtica circularis extract produced antinociception possibly related to the presence of vitexin, chlorogenic, caffeic acid and vicenin-2. The activation of cholinergic systems seems to be involved in the mechanism of antinociception of the extract.
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Affiliation(s)
- S Gorzalczany
- Cátedra de Farmacología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, C1113AAD Buenos Aires, Argentina.
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Marrassini C, Acevedo C, Miño J, Ferraro G, Gorzalczany S. Evaluation of antinociceptive, antinflammatory activities and phytochemical analysis of aerial parts of Urtica urens L. Phytother Res 2011; 24:1807-12. [PMID: 20564509 DOI: 10.1002/ptr.3188] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Abstract
The antinociceptive and antiinflammatory activities of the ethanol extract of the aerial part of Urtica urens were determined by experimental animal models. U. urens extract was found to possess significant antinociceptive activity in chemically induced mouse pain models (ED₅₀ 39.3 mg/kg: 17.2-74.5 mg/kg) in the writhing test and 62.8% inhibition of the licking time in the late phase of the formalin test at a dose of 500 mg/kg p.o. and antiinflammatory activity on carrageenan-induced rat hind paw edema (41.5% inhibition at a dose of 300 mg/kg i.p.). The extract displayed activity neither in the thermal model of pain nor in the topical inflammation model. The major component of the extract was determined as chlorogenic acid (670 mg/1000 g dry weight) and could be partly responsible for this activity.
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Affiliation(s)
- Carla Marrassini
- Cátedra de Farmacognosia, IQUIMEFA, Universidad de Buenos Aires, CONICET, Junín 956, C1113AAD Buenos Aires, Argentina
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Gorzalczany S, López P, Acevedo C, Ferraro G. Anti-inflammatory effect of Lithrea molleoides extracts and isolated active compounds. J Ethnopharmacol 2011; 133:994-998. [PMID: 21094245 DOI: 10.1016/j.jep.2010.11.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2010] [Revised: 11/05/2010] [Accepted: 11/11/2010] [Indexed: 05/30/2023]
Abstract
AIM OF THE STUDY In this study the anti-inflammatory activity of aqueous, dichloromethane (CH₂Cl₂) and methanolic (MeOH) extracts and two major compounds isolated from Lithrea molleoides (Vell.) Engl. (Anacardiaceae) were evaluated. MATERIALS AND METHODS Two classical experimental models were used, carrageenan-induced rat paw edema and 12-O-tetradecanoylphorbol-13 acetate (TPA) induced mouse ear edema. RESULTS MeOH extracts exhibited a significant systemical anti-inflammatory effect in the carrageenan (inhibition of 46% at 3 h) and in the TPA-ear edema test (inhibition of 21%). The presence of methyl gallate (inhibition of 63% in TPA ear edema), as one of the main compounds in the active fraction from MeOH extract may be explained the effect observed. Also, 1,3-dihydroxy-(Z,Z)-5-(tridec-4',7́dienyl) benzene obtained from CH₂Cl₂ extract showed a significant topical anti-inflammatory activity (inhibition of 68%). Furthermore, no signs of toxicity were observed with doses up to 3g/kg in an acute toxicity assay. CONCLUSIONS The results of this study present evidence that Lithrea molleoides given either systemically or topically has anti-inflammatory properties.
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Affiliation(s)
- S Gorzalczany
- Cátedra de Farmacología, Departamento de Farmacología, Facultad de Farmacia y Bioquímica, UBA, Junín 956 (C1113AAD), Buenos Aires, Argentina.
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Rosón MI, Della Penna SL, Cao G, Gorzalczany S, Pandolfo M, Toblli JE, Fernández BE. Different protective actions of losartan and tempol on the renal inflammatory response to acute sodium overload. J Cell Physiol 2010; 224:41-8. [PMID: 20232302 DOI: 10.1002/jcp.22087] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The aim of this work was to study the role of local intrarenal angiotensin II (Ang II) and the oxidative stress in the up-regulation of pro-inflammatory cytokines expression observed in rats submitted to an acute sodium overload. Sprague-Dawley rats were infused for 2 h with isotonic saline solution (Control group) and with hypertonic saline solution alone (Na group), plus the AT1 receptor antagonist losartan (10 mg kg(-1) in bolus) (Na-Los group), or plus the superoxide dismutase mimetic tempol (0.5 mg min(-1) kg(-1)) (Na-Temp group). Mean arterial pressure, glomerular filtration rate, and fractional sodium excretion (FE(Na)) were measured. Ang II, NF-kappaB, hypoxia inducible factor-1 alpha (HIF-1 alpha), transforming growth factor beta1 (TGF-beta1), smooth muscle actin (alpha-SMA), endothelial nitric oxide synthase (eNOS), and RANTES renal expression was evaluated by immunohistochemistry. Ang II, NF-kappaB, and TGF-beta1 and RANTES early inflammatory markers were overexpressed in Na group, accompanied by enhanced HIF-1 alpha immunostaining, lower eNOS expression, and unmodified alpha-SMA. Losartan and tempol increased FE(Na) in sodium overload group. Although losartan reduced Ang II and NF-kappaB staining and increased eNOS expression, it did not restore HIF-1 alpha expression and did not prevent inflammation. Conversely, tempol increased eNOS and natriuresis, restored HIF-1 alpha expression, and prevented inflammation. Early inflammatory markers observed in rats with acute sodium overload is associated with the imbalance between HIF-1 alpha and eNOS expression. While both losartan and tempol increased natriuresis and eNOS expression, only tempol was effective in restoring HIF-1 alpha expression and down-regulating TGF-beta1 and RANTES expression. The protective role of tempol, but not of losartan, in the inflammatory response may be associated with its greater antioxidant effects.
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Affiliation(s)
- María I Rosón
- School of Pharmacy and Biochemistry, Department of Pathophysiology, Pharmacology and Clinical Biochemistry, University of Buenos Aires, INFIBIOC, CONICET, Buenos Aires, Argentina.
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Gorzalczany S, Rosella MA, Spegazzini ED, Acevedo C, Debenedetti SL. Anti-inflammatory activity of Heterotheca subaxillaris var. latifolia (Buckley) Gandhi & R.D. Thomas, Asteraceae. Rev bras farmacogn 2009. [DOI: 10.1590/s0102-695x2009000600014] [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] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Rosón MI, Cao G, Della Penna S, Gorzalczany S, Pandolfo M, Medici C, Fernández BE, Toblli JE. Sodium load combined with low doses of exogenous angiotensin II upregulate intrarenal angiotensin II. Kidney Blood Press Res 2009; 32:334-41. [PMID: 19816037 DOI: 10.1159/000245036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2009] [Accepted: 08/03/2009] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS The present study was designed to evaluate the effects of a salt load combined with exogenous low nonhypertensive angiotensin II (Ang II) doses on Ang II intrarenal regulation. METHODS Sprague-Dawley rats were infused with Ang II nonhypertensive doses (0.1 microg.kg(-1).h(-1) and 5 microg.kg(-1).h(-1)) and saline overload (Na 0.5 M, Na 1.0 M and Na 1.5 M) for 2 h (0.04 ml.min(-1)). Sodium tubular reabsorption, sodium urinary excretion and mean arterial pressure (MAP) were measured. Ang II was evaluated in the kidneys by immunohistochemistry. RESULTS Ang II levels in glomeruli and vessels were exacerbated when sodium load and Ang II were given simultaneously, independently of MAP elevation. In tubules, Ang II staining in the presence of sodium overload was greater in the Ang 0.1 groups than in the Ang 5 groups. Compared with the controls, sodium tubular reabsorption rose in the Ang 0.1-Na 0.5 and Ang 0.1-Na 1 groups and sodium urinary excretion decreased in the Ang 5-Na 0.5 and Ang 5-Na 1 groups. MAP increased in the Ang 5-Na 1 and Ang 5-Na 1.5 groups. CONCLUSION We conclude that local renal Ang II levels were upregulated when acute sodium overload and nonhypertensive Ang II doses were administered simultaneously in normal rats, independently from blood pressure and glomerular function changes.
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Affiliation(s)
- María Inés Rosón
- Department of Pathophysiology, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, INFIBIOC-CONICET, Buenos Aires, Argentina.
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Rosón MI, Cao G, Della Penna S, Gorzalczany S, Pandolfo M, Toblli JE, Fernández BE. Angiotensin II increases intrarenal transforming growth factor-beta1 in rats submitted to sodium overload independently of blood pressure. Hypertens Res 2008; 31:707-15. [PMID: 18633183 DOI: 10.1291/hypres.31.707] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Angiotensin II (Ang II) promotes sodium-retention, cell growth and fibrosis in addition to its classical effects on blood pressure and fluid homeostasis. In this study we examined whether low and non-hypertensive doses of exogenous Ang II could enhance the intrarenal expression of transforming growth factor-beta1 (TGF-beta1) observed in rats submitted to sodium overload. Sprague-Dawley-rats were infused for 2 h with 0.1 and 5 microg kg(-1) h(-1) Ang II (Ang 0.1 and Ang 5, respectively) together with saline solution at four different concentrations (isotonic and Na 0.5 mol L(-1), Na 1.0 mol L(-1) and Na 1.5 mol L(-1)). Renal function and mean arterial blood pressure (BP) were measured. The renal distributions of TGF-beta1, alpha-smooth-muscle-actin (alpha-SMA) and nuclear factor-kappaB (NF-kappaB) were evaluated by immunohistochemistry. While the Ang 0.1 groups were normotensive, the Ang 5 groups developed arterial hypertension progressively, and the highest blood pressure values were observed when rats were simultaneously infused with Na 1.5 mol L(-1). Glomerular function was not altered in any group. In cortical tubules, all groups infused with Ang II (0.1 and 5) and hypertonic saline solution (HSS) showed an increase in TGF-beta1 immunostaining compared to those infused with HSS alone. In medullary tubules, only the Ang 5-Na 0.5 group showed a significant increase in TGF-beta 1 immunostaining compared to the Na 0.5 group. Peritubular positive staining for alpha-SMA was present in groups receiving Ang alone or Ang-Na, in a sodium concentration-dependent manner. In cortical-tubules, NF-kappaB immunostaining was significantly increased in the Ang groups in comparison with the control and in Ang-Na 0.5 and Ang-Na 1.0 groups in comparison with the Na 0.5 mol L(-1) and Na 1.5 mol L(-1) groups, respectively, except in the case of the Ang 0.1-Na 1.5 mol L(-1) and Ang 5-Na 1.5 mol L(-1) groups. Moreover, Ang II and sodium overload induced additional changes in TGF-beta1, alpha-SMA and NF-kappaB immunostanding in glomeruli, medullary tubules and renal vessels. In conclusion, the interaction of Ang II with acute-sodium overload exacerbated intrarenal TGF-beta1, alpha-SMA and NF-kappaB expression, independently from changes in blood pressure levels, in normal rats.
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Affiliation(s)
- María I Rosón
- Department of Pathophysiology, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina.
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Polizio AH, Balestrasse KB, Yannarelli GG, Noriega GO, Gorzalczany S, Taira C, Tomaro ML. Angiotensin II regulates cardiac hypertrophy via oxidative stress but not antioxidant enzyme activities in experimental renovascular hypertension. Hypertens Res 2008; 31:325-34. [PMID: 18360053 DOI: 10.1291/hypres.31.325] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The aim of this study was to provide new insights into the role of angiotensin II and arterial pressure in the regulation of antioxidant enzyme activities in a renovascular model of cardiac hypertrophy. For this purpose, aortic coarcted rats were treated with losartan or minoxidil for 7 days. Angiotensin II induced cardiac hypertrophy and oxidative stress via Nox4, p22(phox) and p47(phox), which are components of the NAD(P)H oxidase. Antioxidant enzymes were regulated by arterial pressure and were not implicated in cardiac hypertrophy. Heme oxygenase-1, the rate-limiting enzyme in heme catabolism, behaved as a catalase and glutathione peroxidase, and is regulated by arterial pressure. In summary, the present report indicates that cardiac hypertrophy, induced by renovascular hypertension, depends on angiotensin II through reactive oxygen species and is not prevented by the action of antioxidant enzymes.
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Affiliation(s)
- Ariel H Polizio
- Department of Biological Chemistry, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
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Gorzalczany S, Sülsen V, Redko F, Vescina C, Muschietti L, Martino V, Acevedo C. Choleretic and antispasmodic effects of Lippia integrifolia aqueous extract. Rev bras farmacogn 2008. [DOI: 10.1590/s0102-695x2008000100005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gironacci MM, Brosnihan KB, Ferrario CM, Gorzalczany S, Verrilli MAL, Pascual M, Taira C, Peña C. Increased hypothalamic angiotensin-(1-7) levels in rats with aortic coarctation-induced hypertension. Peptides 2007; 28:1580-5. [PMID: 17646033 PMCID: PMC2045136 DOI: 10.1016/j.peptides.2007.06.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2007] [Revised: 06/17/2007] [Accepted: 06/18/2007] [Indexed: 10/23/2022]
Abstract
Since angiotensin (Ang) (1-7) injected into the brain blocked Ang II pressor actions in rats made hypertensive by aortic coarctation (CH), we examined systemic and tissue angiotensin peptide levels, specifically concentrating on the hypothalamic Ang-(1-7) levels. Plasma, heart and kidney isolated from CH rats showed increased levels of Ang I, Ang II and Ang-(1-7) compared with the normotensive group, with Ang II being the predominant peptide in heart and kidney. In the hypothalamus, equimolar amounts of Ang II and Ang-(1-7) were found in the sham group, whereas only Ang-(1-7) levels increased in CH rats. We conclude that aortic coarctation activates systemic and tissue renin-angiotensin system. The increased central levels of Ang-(1-7) in the CH rats suggest a potential mitigating role of this peptide in central control of the hypertensive process.
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Affiliation(s)
- Mariela M Gironacci
- Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Argentina.
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Clavin M, Gorzalczany S, Macho A, Muñoz E, Ferraro G, Acevedo C, Martino V. Anti-inflammatory activity of flavonoids from Eupatorium arnottianum. J Ethnopharmacol 2007; 112:585-9. [PMID: 17570627 DOI: 10.1016/j.jep.2007.04.007] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2006] [Revised: 04/04/2007] [Accepted: 04/11/2007] [Indexed: 05/15/2023]
Abstract
Three anti-inflammatory compounds: nepetin, jaceosidin and hispidulin have been isolated and identified from Eupatorium arnottianum Griseb. dichloromethane extract. Nepetin reduced the TPA mouse ear edema by 46.9% and jaceosidin by 23.2% (1mg/ear). Both compounds inhibited the NF kappaB induction by 91 and 77%, respectively. Furthermore phytochemical analysis of the ethanol extract has led to the identification of eriodictyol, hyperoside, rutin, caffeic and chlorogenic acids. All these compounds are reported for the first time in this species. The finding of topical antiinflammatory activity exerted by Eupatorium arnottianum extract and the identification of active principles could support the use of this plant for the treatment of inflammatory affections.
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Affiliation(s)
- M Clavin
- Department of Pharmacognosy, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, Junín 956, 1113 Buenos Aires, Argentina.
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Rosón MI, Toblli JE, Della Penna SL, Gorzalczany S, Pandolfo M, Cavallero S, Fernández BE. Renal protective role of atrial natriuretic peptide in acute sodium overload-induced inflammatory response. Am J Nephrol 2006; 26:590-601. [PMID: 17183188 DOI: 10.1159/000098148] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2006] [Accepted: 11/13/2006] [Indexed: 01/14/2023]
Abstract
BACKGROUND The present study was performed to explore the effect of exogenous infusions of atrial natriuretic peptide (ANP) on the early inflammatory response during acute sodium overload in normal rats. METHODS Sprague Dawley rats were exposed to acute sodium overload (Na 1.5 M). Nonhypotensive doses of ANP (1 and 5 microg x kg(-1) x h(-1)) were infused simultaneously with sodium or after sodium infusion in order to evaluate prevention or reversion of the inflammatory response, respectively. We determined inflammation markers in renal tissue by immunohistochemistry. RESULTS Creatinine clearance was not reduced in any case. Sodium tubular reabsorption increased after sodium overload (334.3 +/- 18.7 vs. control 209.6 +/- 27.0 mEq x min(-1), p < 0.05) without changes in mean arterial pressure. This increase was prevented (228.9 +/- 26.4; p < 0.05) and reversed (231.5 +/- 13.9; p < 0.05) by ANP-5 microg x kg(-1) x h(-1). Sodium overload increased the expression of: RANTES (38.4.3 +/- 0.8 vs. 2.9 +/- 0.6%, p < 0.001), transforming-growth-factor-beta(1) (35.3 +/- 1.0 vs. 5.0 +/- 0.7%, p < 0.001), alpha-smooth muscle actin (15.6 +/- 0.7 vs. 3.1 +/- 0.3%, p < 0.001), NF-kappaB (9.4 +/- 1.3 to 2.2 +/- 0.5 cells/mm(2), p < 0.001), HIF-1alpha (38.2 +/- 1.7 to 8.4 +/- 0.8 cells/mm(2), p < 0.001) and angiotensin II (35.9 +/- 1.3 to 8.2 +/- 0.5%, p < 0.001). ANP-5 microg x kg(-1) x h(-1) prevented and reversed inflammation: RANTES (9.2 +/- 0.5 and 6.9 +/- 0.7, p < 0.001); transforming growth factor-beta(1) (13.2 +/- 0.7 and 10.2 +/- 0.5, p < 0.001) and alpha-smooth muscle actin (4.1 +/- 0.4 and 5.2 +/- 0.4, p < 0.001). Both prevention and reversion by ANP were associated with downregulation of NF-kappaB (3.2 +/- 0.4 and 2.8 +/- 0.5, p < 0.001) and angiotensin II (8.2 +/- 0.5 and 9.1 +/- 0.7, p < 0.001) and diminished hypoxia evaluated through HIF-1alpha expression (8.4 +/- 0.8 and 8.8 +/- 0.7, p < 0.001). CONCLUSION Our study provides evidence supporting a protective role of ANP in both prevention and reversion of renal inflammation in rats with acute sodium overload.
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Affiliation(s)
- María Inés Rosón
- Department of Pathophysiology, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina.
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Rosón MI, Cavallero S, Della Penna S, Cao G, Gorzalczany S, Pandolfo M, Kuprewicz A, Canessa O, Toblli JE, Fernández BE. Acute sodium overload produces renal tubulointerstitial inflammation in normal rats. Kidney Int 2006; 70:1439-46. [PMID: 16955102 DOI: 10.1038/sj.ki.5001831] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The aim of the present study was to determine whether acute sodium overload could trigger an inflammatory reaction in the tubulointerstitial (TI) compartment in normal rats. Four groups of Sprague-Dawley rats received increasing NaCl concentrations by intravenous infusion. Control (C): Na+ 0.15 M; G1: Na+ 0.5 M; G2: Na+ 1.0 M; and G3: Na+ 1.5 M. Creatinine clearance, mean arterial pressure (MAP), renal blood flow (RBF), and sodium fractional excretion were determined. Transforming growth factor beta1 (TGF-beta1), alpha-smooth muscle actin (alpha-SMA), RANTES, transcription factor nuclear factor-kappa B (NF-kappaB), and angiotensin II (ANG II) were evaluated in kidneys by immunohistochemistry. Animals with NaCl overload showed normal glomerular function without MAP and RBF modifications and exhibited a concentration-dependent natriuretic response. Plasmatic sodium increased in G2 (P < 0.01) and G3 (P < 0.001). Light microscopy did not show renal morphological damage. Immunohistochemistry revealed an increased number of ANG II-positive tubular cells in G2 and G3, and positive immunostaining for NF-kappaB only in G3 (P < 0.01). Increased staining of alpha-SMA in the interstitium (P < 0.01), TGF-beta1 in tubular cells (P < 0.01), and a significant percentage (P < 0.01) of positive immunostaining for RANTES in tubular epithelium and in glomerular and peritubular endothelium were detected in G3 > G2 > C group. These results suggest that an acute sodium overload is able 'per se' to initiate TI endothelial inflammatory reaction (glomerular and peritubular) and incipient fibrosis in normal rats, independently of hemodynamic modifications. Furthermore, these findings are consistent with the possibility that activation of NF-kappaB and local ANG II may be involved in the pathway of this inflammatory process.
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Affiliation(s)
- M I Rosón
- Cátedras de Fisiopatología Farmacologia Bioquímica Clínica y Anatomía Macro y Microscópica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Piso, Buenos Aires.
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Polizio AH, Gorzalczany S, Taira C, Peña C. Aortic coarctation induces oxidative stress in rat tissues. Life Sci 2006; 79:596-600. [PMID: 16507310 DOI: 10.1016/j.lfs.2006.02.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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: 07/25/2005] [Revised: 01/19/2006] [Accepted: 02/01/2006] [Indexed: 11/24/2022]
Abstract
The purpose of this study was to evaluate the induction of oxidative stress in heart and erythrocytes from rats with abdominal aorta coarctation (Coa) compared with sham-operated normotensive controls (Sham). The group of Coa animals developed myocardial hypertrophy, showing heart homogenates markedly increased levels of reduced glutathione (48%), lipid peroxidation (148%) and activation of superoxide dismutase and glutathione peroxidase (189% and 37%, respectively), compared with controls. Other oxidative stress indicators were also altered in erythrocytes from Coa rats: increased protein carbonyl content (141%) and total glutathione level (349%) were determined. Inactivation of the antioxidant enzymes catalase (27%), superoxide dismutase (58%) and glutathione peroxidase (25%) was observed in erythrocytes from the Coa group. Taken jointly our results provide strong evidence for the production of oxidative stress in heart and erythrocytes from aortic coarcted rats.
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Affiliation(s)
- Ariel Héctor Polizio
- Departamento de Química Biológica, Instituto de Química y Fisicoquímica Biológicas, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, 1113 Buenos Aires, Argentina
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Weber D, Gorzalczany S, Martino V, Acevedo C, Sterner O, Anke T. Metabolites from endophytes of the medicinal plant Erythrina crista-galli. ACTA ACUST UNITED AC 2005; 60:467-77. [PMID: 16042349 DOI: 10.1515/znc-2005-5-616] [Citation(s) in RCA: 26] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Erythrina crista-galli (Fabaceae) is used in Argentinean ethnopharmacology as anti-inflammatory medication, narcotic, desinfectant, and for the treatment of wounds. The common name of the tree is "ceibo" or coral tree. The dominating endophytes in E. crista-galli all belong to the genus Phomopsis as identified by microscopic features and the analysis of their ITS sequences. To investigate a possible contribution of Phomopsis spp. to the metabolites found in the plant, twelve different isolates were cultivated in different media. Besides several new metabolites a number of known compounds were detected: mellein, nectriapyrone, 4-hydroxymellein, scytalone, tyrosol, clavatol, mevinic acid, and mevalonolactone.
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Affiliation(s)
- Daniela Weber
- Institut für Biotechnologie und Wirkstoff-Forschung, Kaiserslautern, Germany
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Miño J, Moscatelli V, Hnatyszyn O, Gorzalczany S, Acevedo C, Ferraro G. Antinociceptive and antiinflammatory activities of Artemisia copa extracts. Pharmacol Res 2004; 50:59-63. [PMID: 15082030 DOI: 10.1016/j.phrs.2003.12.016] [Citation(s) in RCA: 26] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/01/2003] [Indexed: 10/26/2022]
Abstract
The aqueous extract from aerial parts of Artemisia copa Phil. (Compositae), was evaluated for antinociceptive activity using writhing, formalin, and hot-plate tests in mice. A dose-related antinociceptive response was obtained in the writhing test at doses of 500 and 1000 mg/kg p.o. (percentage of inhibition 23.3 and 52.70, respectively). The extract also inhibited the second phase of formalin test (38.81%) and this effect was not antagonized by pretreatment with naloxone 5mg/kg i.p. Furthermore, no significant effect was obtained in the hot-plate test. Dichloromethane and ethanolic extracts, were analyzed for antiinflammatory activity with the carrageenan-induced paw edema in rats and the ear edema induced by 12-O-tetradecanoylphorbol-13 acetate (TPA) and arachidonic acid (AA) in mice. Both extracts showed antiinflammatory activity in the TPA (88 and 54%), and the ethanolic extract showed a 37% inhibition in AA test. No effects were seen at doses of 300 mg/kg p.o. and 100 mg/kg i.p. in the carrageenan test. The results obtained indicate that A. copa has analgesic and topical antiinflammatory activities that supports the folk medicinal use of the plant.
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Affiliation(s)
- J Miño
- Cátedra de Farmacología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956 5do piso CP: 1113, Buenos Aires, Argentina
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Gironacci MM, Yujnovsky I, Gorzalczany S, Taira C, Peña C. Angiotensin-(1–7) inhibits the angiotensin II-enhanced norepinephrine release in coarcted hypertensive rats. ACTA ACUST UNITED AC 2004; 118:45-9. [PMID: 14759556 DOI: 10.1016/j.regpep.2003.10.026] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2003] [Revised: 10/07/2003] [Accepted: 10/14/2003] [Indexed: 11/16/2022]
Abstract
Since it has been suggested that angiotensin (Ang) (1-7) functions as an antihypertensive peptide, we studied its effect on the Ang II-enhanced norepinephrine (NE) release evoked by K+ in hypothalami isolated from aortic coarcted hypertensive (CH) rats. The endogenous NE stores were labeled by incubation of the tissues with 3H-NE during 30 min, and after 90 min of washing, they were incubated in Krebs solution containing 25 mM KCl in the absence or presence of the peptides. Ang-(1-7) not only diminished the K+-evoked NE release from hypothalami of CH rats, but also blocked the Ang II-enhanced NE release induced by K+. Ang-(1-7) blocking action on the Ang II response was prevented by [D-Ala7]Ang-(1-7), an Ang-(1-7) specific antagonist, by PD 123319, an AT2-receptor antagonist, and by Hoe 140, a B2 receptor antagonist. Ang-(1-7) inhibitory effect on the Ang II facilitatory effect on K+-stimulated NE release disappeared in the presence of Nomega-nitro-L-arginine methylester and was restored by L-arginine. Our present results suggest that Ang-(1-7) may contribute to blood pressure regulation by blocking Ang II actions on NE release at the central level. This inhibitory effect is a nitric oxide-mediated mechanism involving AT2 receptors and/or Ang-(1-7) specific receptors and local bradykinin generation.
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Affiliation(s)
- Mariela Mercedes Gironacci
- Departamento de Química Biológica e Instituto de Química y Fisicoquímica Biológicas, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, 1113, Buenos Aires, Argentina
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Abstract
Aerial parts of Achyrocline satureioides(Lam) D. C. (Asteraceae) are used in folk medicine as infusions or decoctions for the management of several diseases including gastrointestinal and hepatic disorders. These data and the presence of flavonoids and caffeoyl derivatives have led us to study its hepatoprotective and choleretic activities. The hepatoprotective activity was evaluated in the bromobenzene- (BB-) induced hepatotoxicity model in mice through the measurement of the serum levels of alanine-aminotransferase (ALT) and aspartate transaminase (AST), thiobarbituric acid reacting substances (TBARS) and glutathione levels. The aqueous extract of the aerial parts of A. satureioides administered before BB, at the dose of 300 mg kg(-1)p.o., demonstrated significant inhibition (P< 0.01) in the BB increase of liver ALT and AST and in the BB-induced increase of liver TBARS content. Also it was able to significantly increase (P< 0.05) the depleted levels of liver glutathione. In addition, at the same dose, a significant increase (P< 0.01) in the bile flow of rats was found. The results obtained with the aqueous extract of A. satureioides support its use in popular medicine as a hepatoprotective and digestive agent, and the effects might be mediated through the antioxidant and choleretic activities.
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Affiliation(s)
- C Kadarian
- Cátedra de Farmacología, Facultada de Farmacia y Bioquímica, Universidade de Buenos Aires, Argentina
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Muschietti L, Gorzalczany S, Ferraro G, Acevedo C, Martino V. Phenolic compounds with anti-inflammatory activity from Eupatorium buniifolium. Planta Med 2001; 67:743-744. [PMID: 11731917 DOI: 10.1055/s-2001-18355] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Anti-inflammatory activity was detected in the CH(2)Cl(2) extract of the aerial parts of Eupatorium buniifolium using the TPA-mouse ear model. Three compounds isolated from this extract, by bioassay-guided fractionation, significantly inhibited the inflammatory response. The compounds were identified as 5,7,5'-trihydroxy-3,6,2',4'-tetramethoxyflavone (1), scopoletin (2) and centaureidin (3) which inhibited the edema by 67.3 %, 59.8 % and 49.7 %, respectively, at a dose of 1 mg/ear.
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Affiliation(s)
- L Muschietti
- Cátedra de Farmacognosia, IQUIMEFA (UBA-CONICET), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina.
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Gorzalczany S, Filip R, Alonso MR, Miño J, Ferraro GE, Acevedo C. Choleretic effect and intestinal propulsion of 'mate' (Ilex paraguariensis) and its substitutes or adulterants. J Ethnopharmacol 2001; 75:291-294. [PMID: 11297866 DOI: 10.1016/s0378-8741(01)00179-9] [Citation(s) in RCA: 44] [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] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
'Mate' or 'Yerba mate' (Ilex paraguariensis, Aquifoliaceae) is a tonic and stimulant beverage widely used in South America. It is also traditionally used in gastrointestinal disorders as eupeptic and choleretic agent. Accordingly, the effect of decoctions of the leaves of I. paraguariensis and three of its substitutes or adulterants (Ilex brevicuspis, Ilex argentina and Ilex theezans) on bile flow (BF) and intestinal propulsion were investigated. I. paraguariensis and I. brevicuspis induced an increase in BF, while the latter also enhanced intestinal transit. In contrast, neither I. argentina nor I. theezans exerted any effect on BF or intestinal propulsion. These results suggest that the therapeutic properties of I. paraguariensis will be affected when at least an adulterant is present in the final commercial product of Yerba mate.
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Affiliation(s)
- S Gorzalczany
- Cátedra de Farmacología, Facultad de Farmacia y Bioquímica, Junín 956 (1113), Buenos Aires, Argentina
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Abstract
Eupatorium laevigatum, E. arnottianum and E. subhastatum, plants used in Argentine folk medicine for the treatment of inflammation and pain related problems, were evaluated for analgesic activity. The infusions of these species (500 mg/kg, p.o.) produced a reduction in the number of stretches of 46.6%, 41.5% and 35.6% respectively, in the acetic acid induced writhing test. This antinociceptive effect of the infusions was not reversed by pretreatment with naloxone. The infusions studied did not produce antinociceptive effects when assayed in the hot plate test. These results suggest that the analgesic activity is exerted by a mechanism unrelated to interaction with opioid systems.
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Affiliation(s)
- M L Clavin
- Cátedra de Farmacognosia, IQUIMEFA (UBA-CONICET) Universidad de Buenos Aires, Junín 956, 1113 Buenos Aires, República Argentina
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Hnatyszyn O, Miño J, Gorzalczany S, Opezzo J, Ferraro G, Coussio J, Acevedo C. Diuretic activity of an aqueous extract of Phyllanthus sellowianus. Phytomedicine 1999; 6:177-179. [PMID: 10439482 DOI: 10.1016/s0944-7113(99)80006-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Phyllanthus sellowianus Muell. Arg. (Euphorbiaceae) is used widely as a hypoglycemic and diuretic agent in South American folk medicine. In order to assess the diuretic activity of this plant, test animals were treated with a single oral administration of an aqueous extract (5% w/v) of the stem bark of P. sellowianus (400 mg/kg body weight), which produced after 8 h a significant increase in the urinary excretion. In the studies on acute toxicity in mice neither mortality nor neurobehavioral or autonomic profile changes could be observed.
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Affiliation(s)
- O Hnatyszyn
- Cátedra de Farmacognosia, IQUIMEFA (UBA-CONICET), Universidad de Buenos Aires, Argentina.
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Maso MD, Perillo IA, Schapira CB, Gorzalczany S, Acevedo MC, Sicardi SM. New 2-substituted 4-hydroxy-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxides: Spectral and pharmacological properties. J Heterocycl Chem 1999. [DOI: 10.1002/jhet.5570360338] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Gorzalczany S, Taira C. Sympaticomimetics agents mediated cardiovascular responses in dexametasone treated rats. Pharmacol Res 1995. [DOI: 10.1016/1043-6618(95)86560-8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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