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Cifuentes F, Palacios J, Asunción-Alvarez D, de Albuquerque RDG, Simirgiotis MJ, Paredes A, Nwokocha CR, Orfali R, Perveen S. Chemical Characterization of Phoenix dactylifera L. Seeds and their Beneficial Effects on the Vascular Response in Hypertensive Rats. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2024; 79:337-343. [PMID: 38358640 DOI: 10.1007/s11130-024-01140-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/20/2023] [Indexed: 02/16/2024]
Abstract
Although Phoenix dactylifera dates are traditionally consumed for their health benefits, no research has been done on the vascular response in hypertensive animals. This study evaluated the vascular relaxation of hydroalcoholic extracts from seeds of three varieties of P. dactylifera; Sukkari seed (SS), Ajwa seed (AS), and Mabroom seed (MS) on L-NAME-induced hypertension and spontaneously hypertensive rats (SHR). Results showed that all extracts (10 µg/mL) caused relaxations higher than 60% in the aortic rings precontracted with 10- 6 M phenylephrine in normotensive rats, the SS extract was the most potent. Endothelial nitric oxide (NO) pathway is involved as significantly reduced vascular relaxation in denuded-endothelium rat aorta and with an inhibitor (10- 4 M L-Nω-Nitro arginine methyl ester; L-NAME) of endothelial nitric oxide synthase (eNOS). Confocal microscopy confirmed that 10 µg/mL SS extract increases NO generation as detected by DAF-FM fluorescence in intact aortic rings. Consistent with these findings, vascular relaxation in intact aortic rings at 10 µg/mL SS extract was significantly decreased in L-NAME-induced hypertensive rats (endothelial dysfunction model), but not in SHR. In both hypertensive models, the denuded endothelium blunted the vascular relaxation. In conclusion, the hydroalcoholic extract of the seed of P. dactylifera (Sukkari, Ajwa and Mabroom varieties) presents a potent endothelium-dependent vascular relaxation, via NO, in normotensive rats as well as in two different models of hypertension. This effect could be mediated by the presence of phenolic compounds identified by UHPLC-ESI-MS/MS, such as protocatechuic acid, and caftaric acid.
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Affiliation(s)
- Fredi Cifuentes
- Departamento Biomédico, Facultad Ciencias de la Salud, Universidad de Antofagasta, Antofagasta, 1271155, Chile
- Instituto Antofagasta (IA), Universidad de Antofagasta, Antofagasta, 1271155, Chile
| | - Javier Palacios
- Laboratorio de Bioquímica Aplicada, Química y Farmacia, Facultad de Ciencias de la Salud, Universidad Arturo Prat, Iquique, 1110939, Chile.
| | - Daniel Asunción-Alvarez
- Laboratorio de Bioquímica Aplicada, Química y Farmacia, Facultad de Ciencias de la Salud, Universidad Arturo Prat, Iquique, 1110939, Chile
| | | | - Mario J Simirgiotis
- Instituto de Farmacia, Facultad de Ciencias, Universidad Austral de Chile, Valaffiliationia, 5090000, Chile
| | - Adrián Paredes
- Laboratorio de Productos Naturales, Departamento de Química, Facultad de Ciencias Básicas, Universidad de Antofagasta, Antofagasta, 1270300, Chile
- Instituto Antofagasta (IA), Universidad de Antofagasta, Antofagasta, 1271155, Chile
| | - Chukwuemeka R Nwokocha
- Department of Basic Medical Sciences Physiology Section, Faculty of Medical Sciences, The University of the West Indies, Kingston 7, Mona, Jamaica
| | - Raha Orfali
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh, 11451, Saudi Arabia
| | - Shagufta Perveen
- Department of Chemistry, School of Computer, Mathematical and Natural Sciences, Morgan State University, Baltimore, MD, 21251, USA.
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Sayar SB, Has C. Strategy for the Optimization of Read-Through Therapy for Junctional Epidermolysis Bullosa with COL17A1 Nonsense Mutation. J Invest Dermatol 2024:S0022-202X(24)00199-4. [PMID: 38522573 DOI: 10.1016/j.jid.2024.02.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 02/01/2024] [Accepted: 02/14/2024] [Indexed: 03/26/2024]
Abstract
Read-through therapy suppresses premature termination codons and induces read-through activity, consequently restoring missing proteins. Aminoglycosides are widely studied as read-through drugs in different human genetic disorders, including hereditary skin diseases. Our previous work revealed that aminoglycosides affect COL17A1 nonsense mutations and represent a therapeutic option to alleviate disease severity. However, the amount of restored type XVII collagen (C17) in C17-deficient junctional epidermolysis bullosa keratinocytes was <1% relative to that in normal keratinocytes and was achieved only after high-dose gentamicin treatment, which induced deep transcriptional changes. Therefore, in this study, we designed a strategy combining aminoglycosides with compounds known to reduce their side effects. We developed translational read-through-inducing drug cocktail, version 5 containing low dosage of aminoglycosides, CC-90009, NMDI-14, melatonin, and apocynin that was able to induce about 20% of missing C17 without cell toxicity or an effect on in vitro wound closure. Translational read-through-inducing drugs cocktail, version 5 significantly induced COL17A1 expression and reverted the proinflammatory phenotype of C17-deficient junctional epidermolysis bullosa keratinocytes. Evaluation of this drug cocktail regarding its stability, penetration, and efficacy as a topical treatment remains to be determined. Translational read-through-inducing drug cocktail, version 5 might represent an improved therapeutic strategy for junctional epidermolysis bullosa and for other genetic skin disorders.
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Affiliation(s)
- Saliha Beyza Sayar
- Department of Dermatology, Medical Center, University of Freiburg, Freiburg, Germany.
| | - Cristina Has
- Department of Dermatology, Medical Center, University of Freiburg, Freiburg, Germany.
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Saad KM, Salles ÉL, Naeini SE, Baban B, Abdelmageed ME, Abdelaziz RR, Suddek GM, Elmarakby AA. Reno-protective effect of protocatechuic acid is independent of sex-related differences in murine model of UUO-induced kidney injury. Pharmacol Rep 2024; 76:98-111. [PMID: 38214881 DOI: 10.1007/s43440-023-00565-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 12/09/2023] [Accepted: 12/11/2023] [Indexed: 01/13/2024]
Abstract
BACKGROUND Obstructive nephropathy is a condition often caused by urinary tract obstruction either anatomical (e.g., tumors), mechanical (e.g., urolithiasis), or compression (e.g., pregnancy) and can progress to chronic kidney disease (CKD). Studies have shown sexual dimorphism in CKD, where males were found to have a more rapid decline in kidney function following kidney injury compared to age-matched females. Protocatechuic acid (PCA), an anti-oxidant and anti-inflammatory polyphenolic compound, has demonstrated promising effects in mitigating drug-induced kidney injuries. The current study aims to explore sexual dimorphism in kidney injury after unilateral ureteral obstruction (UUO) and assess whether PCA treatment can mitigate kidney injury in both sexes. METHODS UUO was induced in 10-12 weeks old male and female C57BL/6J mice. Mice were categorized into four groups (n = 6-8/group); Sham, Sham plus PCA (100 mg/kg, I.P daily), UUO, and UUO plus PCA. RESULTS After 2 weeks of induction of UUO, markers of kidney oxidative stress (TBARs), inflammation (IL-1α and IL-6), tubular injury (neutrophil gelatinase-associated lipocalin, NGAL and urinary kidney injury molecule-1, KIM-1), fibrosis (Masson's trichrome staining, collagen IV expression, MMP-2 and MMP-9) and apoptosis (TUNEL+ cells, active caspase-1 and caspase-3) were significantly elevated in both males and females relative to their sham counterparts. Males exhibited significantly greater kidney oxidative stress, inflammation, fibrosis, and apoptosis after induction of UUO when compared to females. PCA treatment significantly attenuated UUO-induced kidney injury, inflammation, fibrosis, and apoptosis in both sexes. CONCLUSION Our findings suggest a differential gender response to UUO-induced kidney injury with males being more sensitive to UUO-induced kidney inflammation, fibrosis, and apoptosis than age-matched females. Importantly, PCA treatment reduced UUO-induced kidney injury in a sex-independent manner which might be attributed to its anti-oxidant, anti-inflammatory, anti-fibrotic, and anti-apoptotic properties.
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Affiliation(s)
- Karim M Saad
- Department of Oral Biology and Diagnostic Sciences, Dental College of Georgia, Augusta University, 1450 Laney Walker Blvd, CL2126, Augusta, GA, 30912, USA
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Évila Lopes Salles
- Department of Oral Biology and Diagnostic Sciences, Dental College of Georgia, Augusta University, 1450 Laney Walker Blvd, CL2126, Augusta, GA, 30912, USA
| | - Sahar Emami Naeini
- Department of Oral Biology and Diagnostic Sciences, Dental College of Georgia, Augusta University, 1450 Laney Walker Blvd, CL2126, Augusta, GA, 30912, USA
| | - Babak Baban
- Department of Oral Biology and Diagnostic Sciences, Dental College of Georgia, Augusta University, 1450 Laney Walker Blvd, CL2126, Augusta, GA, 30912, USA
| | - Marwa E Abdelmageed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Rania R Abdelaziz
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Ghada M Suddek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Ahmed A Elmarakby
- Department of Oral Biology and Diagnostic Sciences, Dental College of Georgia, Augusta University, 1450 Laney Walker Blvd, CL2126, Augusta, GA, 30912, USA.
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt.
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Villalobos-Labra R, Liu R, Spaans F, Sáez T, Semeria Maitret T, Quon A, Sawamura T, Cooke CLM, Davidge ST. Placenta-Derived Extracellular Vesicles From Preeclamptic Pregnancies Impair Vascular Endothelial Function via Lectin-Like Oxidized LDL Receptor-1. Hypertension 2023; 80:2226-2238. [PMID: 37615097 DOI: 10.1161/hypertensionaha.123.21205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 08/08/2023] [Indexed: 08/25/2023]
Abstract
BACKGROUND Preeclampsia is a complex syndrome that includes maternal vascular dysfunction. Syncytiotrophoblast-derived extracellular vesicles from preeclampsia placentas (preeclampsia-STBEVs) were shown to induce endothelial dysfunction, but an endothelial transmembrane mediator is still unexplored. The LOX-1 (lectin-like oxidized low-density lipoprotein receptor-1) is a transmembrane scavenger receptor that can cause endothelial dysfunction, and its expression is increased in the endothelium of preeclampsia women. In this study, we hypothesized that LOX-1 mediates the effects of preeclampsia-STBEVs on endothelial function. METHODS Preeclampsia-STBEVs were collected by perfusion of placentas from women with preeclampsia and in vitro and ex vivo endothelial cell function were assessed. RESULTS In human umbilical vein endothelial cells, inhibition of LOX-1 with LOX-1 blocking antibody (TS20) reduced the uptake of preeclampsia-STBEVs (61.3±8.8%). TS20 prevented the activation of ERK (extracellular signal-regulated kinase, a kinase downstream of LOX-1) and reduced the activation of NF-κB (nuclear factor kappa-light-chain-enhancer of activated B cells; 21.1±8.0%) and nitrative stress (23.2±10.3%) that was induced by preeclampsia-STBEVs. Vascular function was assessed by wire myography in isolated mesenteric arteries from pregnant rats that were incubated overnight with preeclampsia-STBEVs±TS20. TS20 prevented endothelium-dependent vasodilation impairment induced by preeclampsia-STBEVs. Nitric oxide contribution to the relaxation was reduced by preeclampsia-STBEVs, which was prevented by TS20. Superoxide dismutase or apocynin, an inhibitor of NOX (nicotinamide adenine dinucleotide phosphate oxidase), restored the impaired endothelium-dependent vasodilation in arteries exposed to preeclampsia-STBEVs. CONCLUSIONS Taken together, our findings demonstrate that LOX-1 mediates the endothelial dysfunction induced by preeclampsia-STBEVs. Our study further expands on the mechanisms that may lead to adverse outcomes in preeclampsia and proposes LOX-1 as a potential target for future interventions.
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Affiliation(s)
- Roberto Villalobos-Labra
- Department of Obstetrics and Gynecology (R.V.-L., R.L., F.S., T. Sáez, A.Q., C.-L.M.C., S.T.D.), University of Alberta, Edmonton, Canada
- Women and Children's Health Research Institute (R.V.-L., R.L., F.S., T. Sáez, A.Q., C.-L.M.C., S.T.D.), University of Alberta, Edmonton, Canada
- Escuela de Medicina sede San Felipe (R.V.-L.), Universidad de Valparaíso, Chile
| | - Ricky Liu
- Department of Obstetrics and Gynecology (R.V.-L., R.L., F.S., T. Sáez, A.Q., C.-L.M.C., S.T.D.), University of Alberta, Edmonton, Canada
- Women and Children's Health Research Institute (R.V.-L., R.L., F.S., T. Sáez, A.Q., C.-L.M.C., S.T.D.), University of Alberta, Edmonton, Canada
- Department of Physiology (R.L., S.T.D.), University of Alberta, Edmonton, Canada
| | - Floor Spaans
- Department of Obstetrics and Gynecology (R.V.-L., R.L., F.S., T. Sáez, A.Q., C.-L.M.C., S.T.D.), University of Alberta, Edmonton, Canada
- Women and Children's Health Research Institute (R.V.-L., R.L., F.S., T. Sáez, A.Q., C.-L.M.C., S.T.D.), University of Alberta, Edmonton, Canada
| | - Tamara Sáez
- Department of Obstetrics and Gynecology (R.V.-L., R.L., F.S., T. Sáez, A.Q., C.-L.M.C., S.T.D.), University of Alberta, Edmonton, Canada
- Women and Children's Health Research Institute (R.V.-L., R.L., F.S., T. Sáez, A.Q., C.-L.M.C., S.T.D.), University of Alberta, Edmonton, Canada
- Departamento de Medicina Interna (T. Sáez), Universidad de Valparaíso, Chile
- Centro de Investigaciones Biomédicas, Escuela de Medicina, Facultad de Medicina (T. Sáez), Universidad de Valparaíso, Chile
| | - Tamara Semeria Maitret
- Department of Laboratory Medicine and Pathology (T.S.M.), University of Alberta, Edmonton, Canada
| | - Anita Quon
- Department of Obstetrics and Gynecology (R.V.-L., R.L., F.S., T. Sáez, A.Q., C.-L.M.C., S.T.D.), University of Alberta, Edmonton, Canada
- Women and Children's Health Research Institute (R.V.-L., R.L., F.S., T. Sáez, A.Q., C.-L.M.C., S.T.D.), University of Alberta, Edmonton, Canada
| | - Tatsuya Sawamura
- Departments of Molecular Pathophysiology and Life Innovation, Shinshu University, Matsumoto, Japan (T. Sawamura)
| | - Christy-Lynn M Cooke
- Department of Obstetrics and Gynecology (R.V.-L., R.L., F.S., T. Sáez, A.Q., C.-L.M.C., S.T.D.), University of Alberta, Edmonton, Canada
- Women and Children's Health Research Institute (R.V.-L., R.L., F.S., T. Sáez, A.Q., C.-L.M.C., S.T.D.), University of Alberta, Edmonton, Canada
| | - Sandra T Davidge
- Department of Obstetrics and Gynecology (R.V.-L., R.L., F.S., T. Sáez, A.Q., C.-L.M.C., S.T.D.), University of Alberta, Edmonton, Canada
- Women and Children's Health Research Institute (R.V.-L., R.L., F.S., T. Sáez, A.Q., C.-L.M.C., S.T.D.), University of Alberta, Edmonton, Canada
- Department of Physiology (R.L., S.T.D.), University of Alberta, Edmonton, Canada
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