1
|
Abstract
Placental explant culture, and cellular cytolysis and cellular differentiation have been previously studied. However, oxidative stress and nitric oxide profiles have not been evaluated in these systems. The aim of this study was to determine the release of lipid peroxidation and nitric oxide from placental explants cultured over a seven day period. Placental explants were maintained for seven days in culture and the medium was changed every 24 hours. The response was assessed in terms of syncytiotrophoblast differentiation (human chorionic gonadotropin, hCG), cellular cytolysis (lactate dehydrogenase, LDH), oxidative stress (thiobarbituric acid reactive substances, TBARS), and nitric oxide (NO). Levels of hCG increased progressively from day two to attain its highest level on days four and five after which it decreased gradually. In contrast, the levels of LDH, TBARS, and NO were elevated in the early days of placental culture when new syncytiotrophoblast from cytotrophoblast were forming and also in the last days of culture when tissue was declining. In conclusion, the levels of NO and lipid peroxidation follow a pattern similar to LDH and contrary to hCG. Future placental explant studies to evaluate oxidative stress and NO should consider the physiological changes inherent during the time of culture.
Collapse
Affiliation(s)
- Juvic M Goncalves
- a Facultad de Medicina , Universidad Central de Venezuela , Caracas , Venezuela and.,b Departamento de Biología de Organismos , Universidad Simón Bolívar , Baruta , Venezuela
| | - Ysabel C Casart
- a Facultad de Medicina , Universidad Central de Venezuela , Caracas , Venezuela and
| | - María I Camejo
- b Departamento de Biología de Organismos , Universidad Simón Bolívar , Baruta , Venezuela
| |
Collapse
|
2
|
Al-Henhena N, Khalifa SAM, Ying RPY, Hassandarvish P, Rouhollahi E, Al-Wajeeh NS, Ali HM, Abdulla MA, El-Seedi HR. Chemopreventive effects of Strobilanthes crispus leaf extract on azoxymethane-induced aberrant crypt foci in rat colon. Sci Rep 2015; 5:13312. [PMID: 26307342 PMCID: PMC4642519 DOI: 10.1038/srep13312] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 07/21/2015] [Indexed: 02/08/2023] Open
Abstract
In this work, microscopic and histological studies suggest that Strobilanthes crispus ethanol extract reduce azoxymethane (AOM)-induced colonic aberrant crypt foci (ACF) in rats. S. crispus is considered a traditional medicine and used as an antioxidant. Its leaf contains a large amount of phenolic compounds to which its radical scavenging role is attributed and enhance its ability to eradicate oxidative stress reactions. The study was designed to determine the chemopreventive effect of S. crispus ethanol extract in vivo and in vitro by elucidating the effect of the extract on intermediate biomarkers which can be used as effective predictors of colon cancer. S. crispus was analyzed for DPPH free radical scavenging, nitric oxide (NO) and ferric acid reduction. The results indicated that S. crispus oral administration significantly inhibited colorectal carcinogenesis induced by AOM as revealed by the reduction in the number of ACF. S. crispus down-regulated the expression of PCNA, Bcl2 and β-catenin. Additionally, it exerted a pronounced inhibitory effect on MDA and NO levels and stimulatory effect on CAT and GPx activities. These results demonstrate that S. crispus is a chemopreventive agent for colorectal cancer through the suppression of early and intermediate carcinogenic phases that may be related to its flavonoid content.
Collapse
Affiliation(s)
- Nawal Al-Henhena
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur , Malaysia
| | - Shaden A. M. Khalifa
- Department of Experimental Hematology, Karolinska University Hospital, SE-141 86 Stockholm, Sweden
| | - Rozaida Poh Yuen Ying
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur , Malaysia
| | - Pouya Hassandarvish
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur , Malaysia
| | - Elham Rouhollahi
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur , Malaysia
| | - Nahla Saeed Al-Wajeeh
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur , Malaysia
| | - Habibah Mohd Ali
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Mahmood Ameen Abdulla
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur , Malaysia
| | - Hesham R. El-Seedi
- Department of Experimental Hematology, Karolinska University Hospital, SE-141 86 Stockholm, Sweden
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
- Division of Pharmacognosy, Department of Medicinal Chemistry, Uppsala University, Box 574, SE-75 123, Uppsala, Sweden
| |
Collapse
|
3
|
Ahmad AS, Satriotomo I, Fazal JA, Nadeau SE, Doré S. Optimization of a Clinically Relevant Model of White Matter Stroke in Mice: Histological and Functional Evidences. ACTA ACUST UNITED AC 2015; 2. [PMID: 27512724 DOI: 10.19104/jnn.2015.14] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND PURPOSE White matter (WM) injury during stroke increases the risk of disability and gloomy prognosis of post-stroke rehabilitation. However, modeling of WM loss in rodents has proven to be challenging. METHODS We report improved WM injury models in male C57BL/6 mice. Mice were given either endothelin-1 (ET-1) or L-N5-(1-iminoethyl)ornitine (L-NIO) into the periventricular white matter (PVWM), in the corpus callosum (CC), or in the posterior limb of internal capsule (PLIC). Anatomical and functional outcomes were quantified on day 7 post injection. RESULTS Injection of ET-1 or L-NIO caused a small focal lesion in the injection site in the PVWM. No significant motor function deficits were observed in the PVWM lesion model. We next targeted the PLIC by using single or double injections of L-NIO and found that this strategy induced small focal infarction. Interestingly, injection of L-NIO in the PLIC also resulted in gliosis, and significant motor function deficits. CONCLUSIONS By employing different agents, doses, and locations, this study shows the feasibility of inducing brain WM injury accompanied with functional deficits in mice. Selective targeting of the injury location, behavioral testing, and the agents chosen to induce WM injury are all keys to successfully develop a mouse model and subsequent testing of therapeutic interventions against WM injury.
Collapse
Affiliation(s)
- Abdullah S Ahmad
- Department of Anesthesiology and Center for Translational Research in Neurodegenerative Disease, University of Florida, FL, USA
| | - Irawan Satriotomo
- Department of Anesthesiology and Center for Translational Research in Neurodegenerative Disease, University of Florida, FL, USA
| | - Jawad A Fazal
- Department of Anesthesiology and Center for Translational Research in Neurodegenerative Disease, University of Florida, FL, USA
| | - Stephen E Nadeau
- Research Service and the Brain Rehabilitation Research Center, Malcom Randall Veterans Affairs Medical Center, FL, USA; Department of Neurology, University of Florida College of Medicine, Gainesville, FL, USA
| | - Sylvain Doré
- Department of Anesthesiology and Center for Translational Research in Neurodegenerative Disease, University of Florida, FL, USA; Departments of Neuroscience, Neurology, and Psychiatry, University of Florida, Gainesville, FL, USA
| |
Collapse
|
4
|
Rong S, Hueper K, Kirsch T, Greite R, Klemann C, Mengel M, Meier M, Menne J, Leitges M, Susnik N, Meier M, Haller H, Shushakova N, Gueler F. Renal PKC-ε deficiency attenuates acute kidney injury and ischemic allograft injury via TNF-α-dependent inhibition of apoptosis and inflammation. Am J Physiol Renal Physiol 2014; 307:F718-26. [DOI: 10.1152/ajprenal.00372.2013] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Acute kidney injury (AKI) increases the risk of morbidity and mortality after major surgery and transplantation. We investigated the effect of PKC-ε deficiency on AKI and ischemic allograft damage after kidney transplantation. PKC-ε-deficient and wild type (WT) control mice were subjected to 35 min of renal pedicle clamping to induce AKI. PKC-ε deficiency was associated with a marked improvement in survival and an attenuated loss of kidney function. Furthermore, functional MRI experiments revealed better renal perfusion in PKC-ε-deficient mice than in WT mice one day after IRI. Acute tubular necrosis and neutrophil infiltration were markedly reduced in PKC-ε-deficient mice. To determine whether this resistance to ischemia-reperfusion injury resulted from changes in local renal cells or infiltrating leukocytes, we studied a life-supporting renal transplant model of ischemic graft injury. We transplanted kidneys from H2b PKC-ε-deficient mice (129/SV) and their corresponding WT littermates into major histocompatibility complex-incompatible H2d recipients (BALB/c) and induced ischemic graft injury by prolonged cold ischemia time. Recipients of WT allografts developed severe renal failure and died within 10 days of transplantation. Recipients of PKC-ε-deficient allografts had better renal function and survival; they had less generation of ROS and upregulation of proinflammatory proteins (i.e., ICAM-1, inducible nitric oxide synthase, and TNF-α) and showed less tubular epithelial cell apoptosis and inflammation in their allografts. These data suggest that local renal PKC-ε expression mediates proapoptotic and proinflammatory signaling and that an inhibitor of PKC-ε signaling could be used to prevent hypoxia-induced AKI.
Collapse
Affiliation(s)
- Song Rong
- Department of Nephrology, Hannover Medical School, Hannover, Germany
- The Transplantation Center, Affiliated Hospital, Zunyi Medical College, Zunyi, China
| | - Katja Hueper
- Institute for Diagnostic and Interventional Radiology, Medical School Hannover, Hannover, Germany
| | - Torsten Kirsch
- Department of Nephrology, Hannover Medical School, Hannover, Germany
| | - Robert Greite
- Department of Nephrology, Hannover Medical School, Hannover, Germany
| | - Christian Klemann
- Centre for Paediatrics and Adolescent Medicine, Department of Pediatric Surgery, Hannover Medical School, Hannover, Germany
| | - Michael Mengel
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Canada
| | - Matthias Meier
- Department of Nephrology, Hannover Medical School, Hannover, Germany
| | - Jan Menne
- Department of Nephrology, Hannover Medical School, Hannover, Germany
- Phenos GmbH, Hannover, Germany
| | - Michael Leitges
- Department of Nephrology, Hannover Medical School, Hannover, Germany
- The Biotechnology Centre of Oslo, University of Oslo, Oslo, Norway
| | - Nathan Susnik
- Department of Nephrology, Hannover Medical School, Hannover, Germany
| | - Martin Meier
- Imaging Center, Institute for Animal Science, Medical School Hannover, Hannover, Germany; and
| | - Hermann Haller
- Department of Nephrology, Hannover Medical School, Hannover, Germany
| | - Nelli Shushakova
- Department of Nephrology, Hannover Medical School, Hannover, Germany
- Phenos GmbH, Hannover, Germany
| | - Faikah Gueler
- Department of Nephrology, Hannover Medical School, Hannover, Germany
| |
Collapse
|
5
|
Molina F, Rus A, Pedrosa JÁ, del Moral ML. Acute hypoxia-induced depletion of striatal nitric oxide synthase pathway. J Chem Neuroanat 2013; 47:42-9. [DOI: 10.1016/j.jchemneu.2012.12.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Revised: 11/12/2012] [Accepted: 12/12/2012] [Indexed: 11/26/2022]
|