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Toader AM, Hoteiuc O, Bidian C, Oltean DD, Tabaran F, Grad O, Clichici S, Mitrea DR. Neuronal apoptosis can be prevented by the combined therapy with melatonin and hypothermia in a neonatal rat model of hypoxic-ischemic encephalopathy. Med Pharm Rep 2021; 94:197-207. [PMID: 34013191 PMCID: PMC8118207 DOI: 10.15386/mpr-1903] [Citation(s) in RCA: 1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 01/10/2021] [Accepted: 02/01/2021] [Indexed: 12/16/2022] Open
Abstract
Introduction Birth hypoxia is a leading cause of perinatal mortality and neurological morbidity, resulting in central nervous system injury. Cerebral hypoxia and ischemia can produce a severe brain damage following a typical pattern, defined by selective vulnerability of the brain regions. The neonates are most prone to hypoxic-ischemic injuries due to the lack of efficient antioxidant defense. Neonatal hypoxia-ischemia (HI) in a 7-day-old rat HI model can produce cell death by apoptotic or necrotic mechanisms. The degree of apoptotic or necrotic mechanisms responsible for cell death in neonatal hypoxia-ischemia are not very clear as yet. The form of neuronal death may also depend on the severity of ischemic injury. Necrosis predominates in more severe cases, whereas apoptosis occurs in areas with milder ischemic injury. A human study demonstrated apoptotic and necrotic forms of cell death after hypoxic injury, whereas in some brains from stillbirths, only apoptotic figures were observed. The expression of activated caspase-3 reflects the role of apoptosis in neonatal hypoxic ischemic brain injury. Objectives The aim of this study was to evaluate the possible neuroprotective effect of melatonin and hypothermia in hypoxic-ischemic encephalopathy in newborn rats. Local damages induced by hypoxia and ischemia were assessed by evaluating the changes in terms of histology and apoptosis. Methods The experiment was conducted on 20 newborn Wistar rats premedicated for seven days with melatonin in a dose of 20 mg/kg/day. On the 7th postnatal day (P7), the newborn rats were exposed to ischemia (by clamping the right carotid artery) and hypobaric hypoxia (8% O2 for 90 minutes) and some groups to hypothermia. Results In this experimental model of neonatal encephalopathy, melatonin, in a dose of 20 mg/kg/day has neuroprotective effect by reducing the number of cells expressing apoptosis in Cornu Ammonis (CA) (Ammon's Horn) CA1, CA2, CA3 and dentate gyrus of the hippocampus when combined with hypothermia. Conclusion The results of this study prove that melatonin is protective in ischemic-hypoxic brain injuries, but the protection is conditioned in most of the brain regions (excepting cerebral cortex) by conjugation with post-injury hypothermia treatment.
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Affiliation(s)
- Alina Mihaela Toader
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Oana Hoteiuc
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Cristina Bidian
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Dan-Daniel Oltean
- Department of Surgical Specialties, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Flaviu Tabaran
- Department of Morphopathology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Romania
| | - Ovidiu Grad
- Department of Surgery, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Simona Clichici
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Daniela Rodica Mitrea
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Tiboc Schnell CN, Filip GA, Decea N, Moldovan R, Opris R, Man SC, Moldovan B, David L, Tabaran F, Olteanu D, Gheldiu AM, Baldea I. The impact of Sambucus nigra L. extract on inflammation, oxidative stress and tissue remodeling in a rat model of lipopolysaccharide-induced subacute rhinosinusitis. Inflammopharmacology 2021; 29:753-769. [PMID: 33881685 DOI: 10.1007/s10787-021-00805-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 03/22/2021] [Indexed: 12/14/2022]
Abstract
Rhinosinusitis is a common disorder related to inflammation of paranasal sinuses and nasal cavity mucosa. Herbal medicines could be an option in the treatment of rhinosinusitis due to their anti-inflammatory and anti-oxidative properties. The study aims to investigate the effect of intranasal Sambucus nigra L. subsp. nigra (SN) extract against inflammation, oxidative stress, and tissue remodeling in nasal and sinus mucosa, but also in serum, lungs, and brain, in Wistar rat model of subacute sinonasal inflammation induced by local administration of lipopolysaccharides (LPS), from Escherichia Coli. The cytokines (TNF-α, IL-1β, IL-6) and oxidative stress (malondialdehyde) in nasal mucosa, blood, lungs, and brain were analyzed. In addition, a histopathological examination was performed, and NF-kB, MMP2, MMP9, TIMP1 expressions were also evaluated in nasal mucosa. Both doses of LPS increased the production of cytokines in all the investigated tissues, especially in the nasal mucosa and blood (p < 0.01 and p < 0.05), and stimulated their secretion in the lungs, and partially in the brain. Malondialdehyde increased in all the investigated tissues (p < 0.01 and p < 0.05). In parallel, upregulation of NF-kB and MMP2 expressions with downregulation of TIMP1, particularly at high dose of LPS, was observed. SN extract reduced the local inflammatory response, maintained low levels of IL-6, TNF-α, and IL-1β. In lungs, SN reduced all cytokines levels while in the brain, the protective effect was noticed only on IL-6. Additionally, SN diminished lipid peroxidation and downregulated NF-kB in animals exposed to a low dose of LPS, with increased TIMP1 expression, while in animals treated with a high dose of LPS, SN increased NF-kB, MMP2, and MMP9 levels. In conclusion, SN extract diminished the inflammatory response, reduced generation of reactive oxygen species (ROS) and, influenced MMPs expressions, suggesting the benficial effect of SN extract on tissue remodeling in subacute rhinosinusitis and on systemic inflammatory response.
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Affiliation(s)
- C N Tiboc Schnell
- Department of Pediatrics, "Iuliu Hatieganu" University of Medicine and Pharmacy, 400006, Cluj-Napoca, Romania
| | - Gabriela Adriana Filip
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Clinicilor Street, No. 1-3, 400006, Cluj-Napoca, Romania.
| | - N Decea
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Clinicilor Street, No. 1-3, 400006, Cluj-Napoca, Romania
| | - R Moldovan
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Clinicilor Street, No. 1-3, 400006, Cluj-Napoca, Romania
| | - R Opris
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Clinicilor Street, No. 1-3, 400006, Cluj-Napoca, Romania
| | - S C Man
- Department of Pediatrics, "Iuliu Hatieganu" University of Medicine and Pharmacy, 400006, Cluj-Napoca, Romania
| | - B Moldovan
- Faculty of Chemistry and Chemical Engineering, "Babes-Bolyai" University, 400028, Cluj-Napoca, Romania
| | - L David
- Faculty of Chemistry and Chemical Engineering, "Babes-Bolyai" University, 400028, Cluj-Napoca, Romania
| | - F Tabaran
- Department of Pathology, University of Agricultural Sciences and Veterinary Medicine, 400035, Cluj-Napoca, Romania
| | - D Olteanu
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Clinicilor Street, No. 1-3, 400006, Cluj-Napoca, Romania
| | - A M Gheldiu
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Iuliu Hatieganu University of Medicine and Pharmacy, 400337, Cluj-Napoca, Romania
| | - I Baldea
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Clinicilor Street, No. 1-3, 400006, Cluj-Napoca, Romania
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Demeny H, Florea B, Tabaran F, Danciu CG, Ognean L. EEG Patterns Orienting to Lafora Disease Diagnosis-A Case Report in Two Beagles. Front Vet Sci 2020; 7:589430. [PMID: 33251270 PMCID: PMC7674959 DOI: 10.3389/fvets.2020.589430] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 07/30/2020] [Accepted: 10/08/2020] [Indexed: 11/21/2022] Open
Abstract
Lafora Disease (LD) is a rare, fatal, late-onset, progressive form of myoclonic epilepsy, occurring in humans and dogs. Clinical manifestations of LD usually include seizures, spontaneous and reflex myoclonus with contractions of the neck and limb muscles. We studied the electroencephalogram (EEG) patterns of two beagles in whom LD was subsequently confirmed by genetic testing. In both cases, the EEG recordings, accompanied by electromyography (EMG), have shown similar uncommon patterns. The hypovoltaged background rhythm was interrupted by waxing “crescendo” polyspikes-slow wave complexes appearing 80–250 ms after the start of intermittent photic stimulation, followed by myoclonic jerks after 80–150 ms. This study highlights the value of EEG in establishing a presumptive diagnosis of LD in dogs.
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Affiliation(s)
- Helga Demeny
- Department of Preclinical and Clinical Sciences, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Bogdan Florea
- Epilepsy and EEG Monitoring Center, Cluj-Napoca, Romania
| | - Flaviu Tabaran
- Department of Preclinical and Clinical Sciences, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Cecilia Gabriella Danciu
- Department of Preclinical and Clinical Sciences, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Laurent Ognean
- Department of Preclinical and Clinical Sciences, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
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Tiboc-Schnell CN, Filip GA, Man SC, Decea N, Moldovan R, Opris R, Sas V, Tabaran F. Quercetin attenuates naso-sinusal inflammation and inflammatory response in lungs and brain on an experimental model of acute rhinosinusitis in rats. J Physiol Pharmacol 2020; 71. [PMID: 33214336 DOI: 10.26402/jpp.2020.4.03] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Accepted: 08/29/2020] [Indexed: 11/03/2022]
Abstract
This study aimed to investigate the effect of quercetin without intranasal inflammation and oxidative stress in nasal and sinus mucosa, but also in serum, lungs and brain in a rat model of acute nasal and sinus inflammation induced by administration of lipopolysaccharides (LPS) (from Escherichia coli). Wistar rats were divided into five groups of 10 animals each. The control group received an intranasal saline solution once/day, for seven consecutive days. Rats in groups 2 and 3, received low-dose (5 μg) and high-dose (10 μg) of LPS, once/day, for seven consecutive days. Rats in groups 4 and 5, received low-dose (5 μg) and high-dose (10 μg) of LPS and after 2 h, 80 mg/kg of quercetin, once/day for seven consecutive days was administered. After the treatment period, the histopathological examination of nasal and sinus mucosa was performed and levels of cytokines (tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), interleukin-6 (IL-6)) and oxidative stress in the blood, nasal mucosa, lungs and brain were also analyzed. High dose of LPS increased TNF-α, IL-6 and IL-1β levels in serum, nasal mucosa, and lungs homogenates while in brain, this effect was only on TNF-α levels. IL-1β enhanced significantly in serum and mucosa, especially after administration of a high dose of LPS (P < 0.01 and P < 0.05). Histopathological and immunofluorescence analysis revealed acute inflammatory reaction in rats treated with both doses of LPS without significant changes of lipid peroxidation in the studied tissues. Quercetin administration diminished the exudate and degree of inflammation in lamina propria of nasal and sinusal areas, parallel with the decreased secretion of TNF-α (40.2% reduction after the low dose of LPS, and 35.4% reduction after the high dose of LPS) and IL-6 (21.4% reduction after the low dose of LPS and 35.8% reduction after the high dose of LPS). In lungs, quercetin reduced TNF-α (43.3%) and IL-6 levels (24.5%), and in the brain, the protective effect was noticed only on TNF-α (46.5%). The intranasal LPS administration successfully induced acute rhinosinusitis in a rat model and also generated an inflammatory response in the lungs and brain. Intranasal administration of quercetin diminished the nasal inflammation and also exerted protective effect on lungs and partially on brain inflammatory reaction.
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Affiliation(s)
- C N Tiboc-Schnell
- Department of Pediatrics, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - G A Filip
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.
| | - S C Man
- Department of Pediatrics, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - N Decea
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - R Moldovan
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - R Opris
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - V Sas
- Department of Pediatrics, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - F Tabaran
- Department of Pathology, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
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Abstract
Background Carbofuran is a widely used broad-spectrum pesticide that, despite strict regulation and being banned for more than a decade, is still encountered in cases of intentional poisoning in dogs and wildlife. The objective of the study was to provide a complete and detailed description of the pathological, histological and toxicological findings of 7 cases of intentional carbofuran poisoning in dogs. Results In this retrospective study, 7 cases of carbofuran intoxication recorded from July 2015 to June 2017 were analyzed. Following complete history recording, all cases were examined by complete necropsy and histopathology. Carbofuran intoxication was confirmed in all cases by gas chromatography. The postmortem examination revealed extensive hemorrhaging and congestion located mainly within the respiratory, nervous and cardiovascular systems, accompanied by degeneration and necrosis within the lungs, heart, and kidneys. Conclusions Although carbamates have been banned in the European Union, carbamate poisoning is still frequently encountered, especially in wild animals. This paper will contribute to a better understanding of the occurrence and pathogenesis of acute carbofuran exposure in dogs and contribute some peculiar pathological features of this type of poisoning to the current literature.
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Affiliation(s)
- Dalma Pivariu
- Department of Veterinary Toxicology, University of Agricultural Sciences and Veterinary Medicine, 3-5 Mănăştur Street, 400372, Cluj-Napoca, Romania
| | - Adrian-Nechita Oros
- Department of Veterinary Toxicology, University of Agricultural Sciences and Veterinary Medicine, 3-5 Mănăştur Street, 400372, Cluj-Napoca, Romania
| | - Flaviu Tabaran
- Department of Veterinary Pathology, University of Agricultural Sciences and Veterinary Medicine, 3-5 Mănăştur Street, 400372, Cluj-Napoca, Romania.
| | - Adrian Gal
- Department of Veterinary Cell Biology, Histology and Embryology, University of Agricultural Sciences and Veterinary Medicine, 3-5 Mănăştur Street, 400372, Cluj-Napoca, Romania
| | - Cristian Martonos
- Department of Veterinary Cell Biology, Histology and Embryology, University of Agricultural Sciences and Veterinary Medicine, 3-5 Mănăştur Street, 400372, Cluj-Napoca, Romania
| | - Andras-Laszlo Nagy
- Department of Veterinary Toxicology, University of Agricultural Sciences and Veterinary Medicine, 3-5 Mănăştur Street, 400372, Cluj-Napoca, Romania
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Abstract
Background Left ventricular noncompaction (LVNC) is a rare form of cardiomyopathy currently described in humans and cats. It consists of a spongy myocardium characterized by prominent trabeculation and deep recesses involving more than 50% of the ventricular thickness. We describe the clinical and pathological features of LVNC combined with tricuspid valve dysplasia, double-orifice tricuspid valve and severe pulmonary stenosis in a puppy. In addition, we briefly review the LVNC causes, pathogenesis, forms and current diagnostic criteria. Case presentation A seven-week-old intact German Shorthaired Pointer-cross male was presented with a poor body condition, exercise intolerance and dyspnea. Clinical exam identified a bilateral systolic murmur (grade IV/VI over the right heart base and grade III/VI over the left heart base). Echocardiography identified tricuspid valve dysplasia, mild mitral regurgitation, and severe pulmonic stenosis with a trans-valvar systolic pressure gradient of 106 mmHg. Left ventricular noncompaction was diagnosed by necropsy and further confirmed histopathologically by the presence of two distinct myocardial layers: an inner noncompacted zone covering more than 50% of ventricular thickness containing prominent trabeculation and deep recesses, and an outer zone of compact myocardium. Conclusions This is the first case describing LVNC in a canine patient, supporting the introduction of this form of heart disease as a differential diagnosis for cardiomyopathies in juvenile and adult dogs.
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Affiliation(s)
- Maria Vilcu
- University of Agricultural Science and Veterinary Medicine, Calea Manastur 3-5, 400372, Cluj- Napoca, Romania
| | - Iuliu Scurtu
- University of Agricultural Science and Veterinary Medicine, Calea Manastur 3-5, 400372, Cluj- Napoca, Romania.
| | - Dan G Ohad
- The Koret School of Veterinary Medicine, Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, P.O. Box 12, 76100, Rehovot, Israel
| | - Ionel Papuc
- University of Agricultural Science and Veterinary Medicine, Calea Manastur 3-5, 400372, Cluj- Napoca, Romania
| | - Laura Scurtu
- Modis Competence Center, Strada Muresului 9, 400598, Cluj-Napoca, Romania
| | - Flaviu Tabaran
- University of Agricultural Science and Veterinary Medicine, Calea Manastur 3-5, 400372, Cluj- Napoca, Romania
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Manciula LG, Berce C, Tabaran F, Trombitaș V, Albu S. The Effects of Postoperative Astaxanthin Administration on Nasal Mucosa Wound Healing. J Clin Med 2019; 8:E1941. [PMID: 31718054 PMCID: PMC6912356 DOI: 10.3390/jcm8111941] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 11/06/2019] [Accepted: 11/08/2019] [Indexed: 12/20/2022] Open
Abstract
. BACKGROUND Wound healing of the nasal mucosa after endoscopic sinus surgery (ESS) is frequently complicated by scaring and consequently recurrences are encountered. Methods of optimizing results have been sought. In the present study we evaluated the effects of a powerful antioxidant, astaxanthin, on nasal mucosa healing after surgery, comparing it to the extensively studied properties of dexamethasone. MATERIALS AND METHODS 63 Wistar rats were used. The nasal mucosa from one side was damaged employing the brushing method. They were randomly divided into three experimental groups, one treated with astaxanthin, the second treated with dexamethasone and the third one acted as the control and was given normal saline. The rats were killed on days 5, 14 and 28 following injury. We observed the temporal evolution of the wound healing process and quantified the results by assessing four parameters: the epithelial thickness index (ETI), the subepithelial thickness index (STI), the goblet cell count and the subepithelial fibrosis index (SFI). RESULTS At 28 days, the ETI was significantly lower in the astaxanthin group (p < 0.05) compared to the other two groups. The STI was also lower in the astaxanthin group (p < 0.05), but comparable to the dexamethasone group at 28 days. The goblet cell count was higher in the astaxanthin group. The SFI had similar results in both dexamethasone and astaxanthin groups, with lower values compared to the control group. In the astaxanthin group there was no synechia formation. CONCLUSION Astaxanthin given in the post injury period significantly decreases fibrosis, inhibits synechia development and significantly decreases subepithelial fibrosis. Moreover, it has no general or local toxic effects.
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Affiliation(s)
- Lavinia-Gianina Manciula
- 2nd Department of Otolaryngology, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes Street, 400012 Cluj-Napoca, Romania; (V.T.); (S.A.)
| | - Cristian Berce
- Department of Experimental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes Street, 400012 Cluj-Napoca, Romania;
| | - Flaviu Tabaran
- Pathology Department, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania;
| | - Veronica Trombitaș
- 2nd Department of Otolaryngology, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes Street, 400012 Cluj-Napoca, Romania; (V.T.); (S.A.)
| | - Silviu Albu
- 2nd Department of Otolaryngology, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes Street, 400012 Cluj-Napoca, Romania; (V.T.); (S.A.)
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Gal A, Dumitras D, Tabaran F, Rugina D, Andrei S. Dietary Polyphenon E modulates the markers of oxidative stress induced by administration of MNU in rats. J Biotechnol 2019. [DOI: 10.1016/j.jbiotec.2019.05.277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Trambitas C, Pop AM, Trambitas Miron AD, Dorobantu DC, Tabaran F, Cordos B, Suciu BA, Brinzaniuc K. Regeneration of Bone Defects Using Bioactive Glass Combined with Adipose-derived Mesenchymal Stem Cells. An experimental in vivo study. Rev Chim 2019. [DOI: 10.37358/rc.19.6.7259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Large bone defects are a medical concern as these are often unable to heal spontaneously, based on the host bone repair mechanisms. In their treatment, bone tissue engineering techniques represent a promising approach by providing a guide for osseous regeneration. As bioactive glasses proved to have osteoconductive and osteoinductive properties, the aim of our study was to evaluate by histologic examination, the differences in the healing of critical-sized calvarial bone defects filled with bioactive glass combined with adipose-derived mesenchymal stem cells, compared to negative controls. We used 16 male Wistar rats subjected to a specific protocol based on which 2 calvarial bone defects were created in each animal, one was filled with Bon Alive S53P4 bioactive glass and adipose-derived stem cells and the other one was considered control. At intervals of one week during the following month, the animals were euthanized and the specimens from bone defects were histologically examined and compared. The results showed that this biomaterial was biocompatible and the first signs of osseous healing appeared in the third week. Bone Alive S53P4 bioactive glass could be an excellent bone substitute, reducing the need of bone grafts.
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Lucaciu O, Campian RS, Soritau O, Berce C, Mester A, Apostu D, Tabaran F, Manole M, Bordea R, Ionel DC, Ionel A. Dental Follicle Stem Cells as a Biomaterial for Periodontal Regeneration A proof-of-concept study. Rev Chim 2018. [DOI: 10.37358/rc.18.7.6417] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The goal of periodontal therapy is to regenerate the periodontal structures: cement, periodontal ligament and alveolar bone. Stem cell-based tissue engineering raised novel therapeutic strategies for periodontal repair. In vivo dental follicle stem (DFSC) cells give rise to cementoblasts, osteoblasts and fibroblasts. Based on this idea, we have assessed DFSC potential to regenerate the periodontal structures, and by that to elaborate a new biomaterial. An experimental study was performed on male Wistar rats which were subjected to a procedure of periodontitis induction through placing silk thread ligatures around the lower incisors, under general anesthesia. Clinically, the changes of the periodontal tissue (bleeding on probing, dental mobility, dental plaque, presence of pus) induced by the periodontitis progression were daily assessed. The subjects were divided in two groups: a control and a study group. After 7 days from placing silk thread ligatures, subjects from the study group received an injection in the gingival sulcus. The injected biomaterial contained dental follicle stem cells seeded on fibrinogen. Bleeding on probing at the end of the treatment period was significantly reduced in the study group (study vs control group - 0% vs 100%, p=0.01.). In terms of dental mobility statistical significant results were obtained (p=0.04): for 20% from the subjects from the study group dental mobility was absent, while in the control group all subjects presented different degrees of mobility (33.3% degree II- v-o/m-d, 66.6% degree III-v-o/m-d/ax). In the control group pus was present in 66.7% from the subjects, and absent in the study group (p=0.10). Dental plaque was present in 40% of the subjects from the study group and in 100% in the control group. The clinical and histological results of our study demonstrate that dental follicle stem cells are a valuable cell source for tissue engineering the periodontal tissue.
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Paşcalău V, Dindelegan G, Dirzu N, Salantiu AM, Pavel C, Dudescu MC, Popa F, Borodi G, Tabaran F, Iuga CA, Popa C. Corrigendum to “Bioactive Ti-base biomaterial with sustained anti-bacterial response for endosseous applications” [React. Funct. Polym. 125(2018) 37–46]. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2018.03.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Fodor P, Fodor R, Solyom A, Catoi C, Tabaran F, Lacatus R, Trambitas C, Cordos B, Bataga T. Autologous Matrix-Induced Chondrogenesis vs Microfracture with PRP for Chondral Lesions of the Knee in a Rabbit Model. Rev Chim 2018. [DOI: 10.37358/rc.18.4.6223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Currently, microfracturing is the most commonly used cartilage repair procedure in cartilage defects. Our aim was to study the mechanism of in vivo cartilage repair in case of full-thickness articular cartilage damage of the knee using a three-dimensional matrix implanted without any preseeded cells in the defect. We also investigated whether platelet-rich plasma application after microfracture procedure of the knee is associated with improved outcome compared with traditional microfracture treatment alone in a rabbit model. Histological examination of the chondral defects, revealed the largest amount of new tissue with hyaline-like cartilage features in Hyalofast group. At 12 weeks from implantation of the Hyalofast scaffold demonstrated complete filling of the defect with hyaline cartilage in admixture with the scaffold and bone metaplasia in the deepest areas. In the PRP group, complete filling of the defect with an admixture of fibrous and hyaline-like cartilage tissue appeared with a discreet tendency of endochondral ossification. We confirmed the superiority of the autologous matrix-induced chondrogenesis compared to microfracture and PRP or microfracture alone in case of full-thickness articular cartilage damage of the knee.
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Paşcalău V, Dindelegan G, Dirzu N, Salantiu AM, Pavel C, Dudescu MC, Popa F, Borodi G, Tabaran F, Iuga CA, Popa C. Bioactive Ti-base biomaterial with sustained anti-bacterial response for endosseous applications. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2018.02.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Fodor P, Solyon A, Fodor R, Catoi C, Tabaran F, Lacatus R, Trambitas C, Bataga T. Role of the Biomimetic Scaffolds in the Regeneration of Articular Tissue in Deep Osteochondral Defects in a Rabbit Model. Rev Chim 2018. [DOI: 10.37358/rc.18.1.6074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The ability of damaged articular cartilage to recover with normal hyaline cartilage is limited. Our aim was to study the mechanism of in vivo cartilage repair in case of severe osteochondral lesions using a three-dimensional matrix implanted without any preseeded cells in the osteochondral defect in a rabbit model. According to the ICRS scores from macroscopic observations of the femoral condyles, the average scores in the scaffold groups were higher than those in the control groups at every time (P[0.001). Histological examination of the ostheochondral defects, revealed regeneration of new tissue with hyaline-like cartilage features only in matrix groups. At twelve weeks from implantation, complete filling of the defect with hyaline cartilage with a tendency of mineralization and the absence of implant material is observed. The superficial area of the defect is completely covered with hyaline-like cartilage. The scaffold used leaded to the regeneration of articular tissue with an ordered histoarchitecture.
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Scurtu I, Tabaran F, Mircean M, Giurgiu G, Nagy A, Catoi C, Ohad DG. Combined double chambered right ventricle, tricuspid valve dysplasia, ventricular septal defect, and subaortic stenosis in a dog. BMC Vet Res 2017; 13:367. [PMID: 29187205 PMCID: PMC5708114 DOI: 10.1186/s12917-017-1275-1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 11/16/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Double chambered right ventricle (DCRV) is a congenital heart anomaly where the right ventricle is divided into two chambers. We describe, for the first time, an unusual combination of DCRV combined with some other congenital heart defects. CASE PRESENTATION A 1.2-year-old Golden Retriever was presented with lethargy, exercise intolerance and ascites. Physical examination revealed an irregularly irregular pulse and a grade V/VI, systolic, right cranial murmur. Electrocardiography revealed widened and splintered QRS complexes with a right bundle-branch block pattern. Radiography demonstrated right-sided cardiomegaly. Two-dimensional echocardiography identified a DCRV with tricuspid valve dysplasia. The patient died despite abdominocentesis and 4 days of oral pharmacotherapy, and necropsy revealed an anomalous fibromuscular structure that divided the right ventricle into two compartments. Another finding was tricuspid valve dysplasia with hypoplasia of the posterior and septal leaflets. The anterior leaflet was prominent, being part of the anomalous structure that divided the right ventricle. Necropsy also identified a perimembranous ventricular septal defect and mild subaortic stenosis. Histopathological examination of the fibromuscular band that separated the right ventricle identified longitudinally oriented layers of dense fibrous connective tissue and myocardial cells arranged in a plexiform pattern. The muscular component was well represented at the ventral area of the fibromuscular band, and was absent in the central zone. Superficially, the endocardium presented areas of nodular hyperplasia covering mainly the fibrous part of the abnormal structure. The nodules were sharply demarcated and were composed by loosely arranged connective tissue with myxoid appearance, covered by discrete hyperplastic endocardium. CONCLUSIONS Concomitant cardiac malformations involving DCRV, tricuspid valve dysplasia, perimembranous ventricular septal defect and mild subaortic stenosis have not been previously described in veterinary medicine, and are reported here for the first time. Moreover, this is the first report of a canine patient with tricuspid valve dysplasia (TVD) and DCRV where the anterior leaflet is part of an anomalous structure dividing the right ventricle (RV) into two separate compartments.
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Affiliation(s)
- Iuliu Scurtu
- Universitatea de Stiinte Agricole si Medicina Veterinara din Cluj-Napoca, Calea Manastur 3-5, 400372, Cluj-Napoca, Romania
| | - Flaviu Tabaran
- Universitatea de Stiinte Agricole si Medicina Veterinara din Cluj-Napoca, Calea Manastur 3-5, 400372, Cluj-Napoca, Romania.
| | - Mircea Mircean
- Universitatea de Stiinte Agricole si Medicina Veterinara din Cluj-Napoca, Calea Manastur 3-5, 400372, Cluj-Napoca, Romania
| | - Gavril Giurgiu
- Universitatea de Stiinte Agricole si Medicina Veterinara din Cluj-Napoca, Calea Manastur 3-5, 400372, Cluj-Napoca, Romania
| | - Andras Nagy
- Universitatea de Stiinte Agricole si Medicina Veterinara din Cluj-Napoca, Calea Manastur 3-5, 400372, Cluj-Napoca, Romania
| | - Cornel Catoi
- Universitatea de Stiinte Agricole si Medicina Veterinara din Cluj-Napoca, Calea Manastur 3-5, 400372, Cluj-Napoca, Romania
| | - Dan G Ohad
- The Koret School of Veterinary Medicine, Robert H. Smith Faculty of Agriculture Food and Environment, Hebrew University of Jerusalem, P.O. Box 12, 76100, Rehovot, Israel
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Chirila F, Tabaran A, Fit N, Nadas G, Mihaiu M, Tabaran F, Cătoi C, Reget OL, Dan SD. Concerning Increase in Antimicrobial Resistance in Shiga Toxin-Producing Escherichia coli Isolated from Young Animals during 1980-2016. Microbes Environ 2017; 32:252-259. [PMID: 28904263 PMCID: PMC5606695 DOI: 10.1264/jsme2.me17023] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
This study was conducted in order to assess the antimicrobial resistance patterns of E. coli isolated from young animals affected between 1980 and 2016. The selected isolates for this study (n=175) carried stx1/stx2 genes and the most prevalent type of pathogenic E. coli found belonged to serogroup O101, antigen (K99)–F41 positive. All STEC-positive isolates were tested for susceptibility to 11 antimicrobials. Multidrug resistance (MDR) increased from 11% during the 1980s to 40% between 2000 and 2016. Resistance to tetracycline and streptomycin was the most frequent co-resistance phenotype (37%). Co-resistance to tetracycline and sulfonamide was found in 21% of E. coli isolates, while the MDR pattern to tetracycline, sulfonamide, and streptomycin was observed in 12% of the strains tested. Only 8% of isolates were co-resistant to tetracycline, ampicillin, streptomycin, and sulfonamide. The most common resistance genes found were those encoding for tetracycline, sulphonamides, and streptomycin, with 54% (n=95) of the tested isolates containing at least one of the genes encoding tetracycline resistance. A total of 87% of E. coli that tested positive for tetracycline (tetA, tetB, and tetC) and sulphonamide (sul1) resistance genes were isolated between 2000 and 2016. A large number of isolates (n=21) carried int1 and a nucleotide sequence analysis revealed that all class 1 integron gene cassettes carried sul1, tet, and dfrA1 resistance genes. An increase was observed in the level of resistance to antimicrobials in Romania, highlighting the urgent need for a surveillance and prevention system for antimicrobial resistance in livestock in Eastern Europe.
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Affiliation(s)
- Flore Chirila
- Microbiology Department, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine
| | - Alexandra Tabaran
- Animal Breeding and Food Safety Department, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine
| | - Nicodim Fit
- Microbiology Department, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine
| | - George Nadas
- Microbiology Department, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine
| | - Marian Mihaiu
- Animal Breeding and Food Safety Department, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine
| | - Flaviu Tabaran
- Pathologic Anatomy Department, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine
| | - Cornel Cătoi
- Pathologic Anatomy Department, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine
| | - Oana Lucia Reget
- Animal Breeding and Food Safety Department, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine
| | - Sorin Daniel Dan
- Animal Breeding and Food Safety Department, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine
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Abstract
Quantum dots (QDs), also known as nanoscale semiconductor crystals, are nanoparticles with unique optical and electronic properties such as bright and intensive fluorescence. Since most conventional organic label dyes do not offer the near-infrared (>650 nm) emission possibility, QDs, with their tunable optical properties, have gained a lot of interest. They possess characteristics such as good chemical and photo-stability, high quantum yield and size-tunable light emission. Different types of QDs can be excited with the same light wavelength, and their narrow emission bands can be detected simultaneously for multiple assays. There is an increasing interest in the development of nano-theranostics platforms for simultaneous sensing, imaging and therapy. QDs have great potential for such applications, with notable results already published in the fields of sensors, drug delivery and biomedical imaging. This review summarizes the latest developments available in literature regarding the use of QDs for medical applications.
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Affiliation(s)
- Cristian T Matea
- Nanomedicine Department, Regional Institute of Gastroenterology and Hepatology "Octavian Fodor"
| | - Teodora Mocan
- Nanomedicine Department, Regional Institute of Gastroenterology and Hepatology "Octavian Fodor".,Department of Physiology, University of Medicine and Pharmacy, "Iuliu Hatieganu"
| | - Flaviu Tabaran
- Nanomedicine Department, Regional Institute of Gastroenterology and Hepatology "Octavian Fodor".,Department of Pathology, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine
| | - Teodora Pop
- Nanomedicine Department, Regional Institute of Gastroenterology and Hepatology "Octavian Fodor".,Department of Gastroenterology
| | - Ofelia Mosteanu
- Nanomedicine Department, Regional Institute of Gastroenterology and Hepatology "Octavian Fodor".,Department of Gastroenterology
| | - Cosmin Puia
- Nanomedicine Department, Regional Institute of Gastroenterology and Hepatology "Octavian Fodor".,Department of Surgery, University of Medicine and Pharmacy, "Iuliu Hatieganu", Cluj-Napoca, Romania
| | - Cornel Iancu
- Nanomedicine Department, Regional Institute of Gastroenterology and Hepatology "Octavian Fodor".,Department of Surgery, University of Medicine and Pharmacy, "Iuliu Hatieganu", Cluj-Napoca, Romania
| | - Lucian Mocan
- Nanomedicine Department, Regional Institute of Gastroenterology and Hepatology "Octavian Fodor".,Department of Surgery, University of Medicine and Pharmacy, "Iuliu Hatieganu", Cluj-Napoca, Romania
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Gherman CD, Catoi C, Socaciu C, Pintea A, Oros NA, Tabaran F, Nagy AL, Sambuy Y, De Angelis I, Coccini T, Bassi V, Caloni F. IN vitro toxicology: From INtestine to braIN. ALTEX 2017; 34:439-440. [PMID: 28735339 DOI: 10.14573/altex.1706151] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
| | - Cornel Catoi
- University of Agricultural Sciences and Veterinary Medicine, Romanian Center for Alternative Test Methods (ROCAM), Cluj-Napoca, Romania
| | - Carmen Socaciu
- University of Agricultural Sciences and Veterinary Medicine, Romanian Center for Alternative Test Methods (ROCAM), Cluj-Napoca, Romania
| | - Adela Pintea
- University of Agricultural Sciences and Veterinary Medicine, Romanian Center for Alternative Test Methods (ROCAM), Cluj-Napoca, Romania
| | - Nechita Adrian Oros
- University of Agricultural Sciences and Veterinary Medicine, Romanian Center for Alternative Test Methods (ROCAM), Cluj-Napoca, Romania
| | - Flaviu Tabaran
- University of Agricultural Sciences and Veterinary Medicine, Romanian Center for Alternative Test Methods (ROCAM), Cluj-Napoca, Romania
| | - Andras-Laszlo Nagy
- University of Agricultural Sciences and Veterinary Medicine, Romanian Center for Alternative Test Methods (ROCAM), Cluj-Napoca, Romania
| | - Yula Sambuy
- CREA, Food & Nutrition Research Center, Rome, Italy
| | - Isabella De Angelis
- Istituto Superiore di Sanità, ISS, Department of Environment and Primary Prevention, Rome, Italy
| | - Teresa Coccini
- Laboratory of Clinical and Experimental Toxicology, Toxicology Unit, Maugeri Clinical Scientific Institutes SpA-BS, IRCCS Pavia
| | - Virginia Bassi
- Università degli Studi di Milano, Department of Veterinary Medicine (DIMEVET), Milan, Italy
| | - Francesca Caloni
- Università degli Studi di Milano, Department of Veterinary Medicine (DIMEVET), Milan, Italy
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Dănilă OO, Berghian AS, Dionisie V, Gheban D, Olteanu D, Tabaran F, Baldea I, Katona G, Moldovan B, Clichici S, David L, Filip GA. The effects of silver nanoparticles on behavior, apoptosis and nitro-oxidative stress in offspring Wistar rats. Nanomedicine (Lond) 2017; 12:1455-1473. [DOI: 10.2217/nnm-2017-0029] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Aim: To investigate the comparative effects of prenatal exposure to silver nanoparticles (AgNPs) functionalized with citrate and polyphenols on spatial cognition and also on nitro-oxidative stress and apoptosis in the hippocampus and cerebellum of offsprings. Materials & methods: Pregnant Wistar rats were orally administered substances from day 10 of gestation until day 21. Six weeks postpartum, six male offsprings from each group were used for behavioral evaluation and determination of oxidative stress and apoptosis. Results: Both groups exhibited hyperactivity and anxiety especially after AgNPs-Sambucus nigra L. administration. AgNPs-S. nigra L. group showed increase in induced nitric oxide synthase activity and decrease in superoxide dismutase activity and apoptosis in the hippocampus, while AgNPs-citrate coated administration exerted a moderate toxicity and induced apoptosis. Conclusion: AgNPs functionalized with natural extracts had a lower toxicity than citrate-coated silver particles.
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Affiliation(s)
- Oana-Ofelia Dănilă
- Department of Physiology, “Iuliu Hatieganu” University of Medicine & Pharmacy, 1–3 Clinicilor Street, Cluj-Napoca, 400006, Romania
| | - Alexandra Sevastre Berghian
- Department of Physiology, “Iuliu Hatieganu” University of Medicine & Pharmacy, 1–3 Clinicilor Street, Cluj-Napoca, 400006, Romania
| | - Vlad Dionisie
- Department of Physiology, “Iuliu Hatieganu” University of Medicine & Pharmacy, 1–3 Clinicilor Street, Cluj-Napoca, 400006, Romania
| | - Dan Gheban
- Department of Morphopathology, “Iuliu Hatieganu” University of Medicine & Pharmacy, 35 Clinicilor Street, Cluj-Napoca, 400006, Romania
| | - Diana Olteanu
- Department of Physiology, “Iuliu Hatieganu” University of Medicine & Pharmacy, 1–3 Clinicilor Street, Cluj-Napoca, 400006, Romania
| | - Flaviu Tabaran
- University of Agricultural Sciences & Veterinary Medicine, Department of Pathology Calea Manastur 3–5, Cluj-Napoca, 400372, Romania
| | - Ioana Baldea
- Department of Physiology, “Iuliu Hatieganu” University of Medicine & Pharmacy, 1–3 Clinicilor Street, Cluj-Napoca, 400006, Romania
| | - Gabriel Katona
- Faculty of Chemistry & Chemical Engineering, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Bianca Moldovan
- Faculty of Chemistry & Chemical Engineering, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Simona Clichici
- Department of Physiology, “Iuliu Hatieganu” University of Medicine & Pharmacy, 1–3 Clinicilor Street, Cluj-Napoca, 400006, Romania
| | - Luminita David
- Faculty of Chemistry & Chemical Engineering, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Gabriela Adriana Filip
- Department of Physiology, “Iuliu Hatieganu” University of Medicine & Pharmacy, 1–3 Clinicilor Street, Cluj-Napoca, 400006, Romania
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20
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Tudor D, Nenu I, Filip GA, Olteanu D, Cenariu M, Tabaran F, Ion RM, Gligor L, Baldea I. Combined regimen of photodynamic therapy mediated by Gallium phthalocyanine chloride and Metformin enhances anti-melanoma efficacy. PLoS One 2017; 12:e0173241. [PMID: 28278159 PMCID: PMC5344368 DOI: 10.1371/journal.pone.0173241] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [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: 08/29/2016] [Accepted: 02/18/2017] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Melanoma therapy is challenging, especially in advanced cases, due to multiple developed tumor defense mechanisms. Photodynamic therapy (PDT) might represent an adjuvant treatment, because of its bimodal action: tumor destruction and immune system awakening. In this study, a combination of PDT mediated by a metal substituted phthalocyanine-Gallium phthalocyanine chloride (GaPc) and Metformin was used against melanoma. The study aimed to: (1) find the anti-melanoma efficacy of GaPc-PDT, (2) assess possible beneficial effects of Metformin addition to PDT, (3) uncover some of the mechanisms underlining cell killing and anti-angiogenic effects. METHODS Two human lightly pigmented melanoma cell lines: WM35 and M1/15 subjected to previous Metformin exposure were treated by GaPc-PDT. Cell viability, death mechanism, cytoskeleton alterations, oxidative damage, were assessed by means of colorimetry, flowcytometry, confocal microscopy, spectrophotometry, ELISA, Western Blotting. RESULTS GaPc proved an efficient photosensitizer. Metformin addition enhanced cell killing by mechanisms dependent on the cell line, namely apoptosis in the metastatic M1/15 and necrosis in the radial growth phase, WM35. Cell death mechanism relied on the inhibition of nuclear transcription factor (NF)-κB activation and tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) sensitization, leading to TRAIL and TNF-α induced apoptosis. Metformin diminished the anti-angiogenic effect of PDT. CONCLUSIONS Metformin addition to GaPc-PDT increased tumor cell killing through enhanced oxidative damage and induction of proapoptotic mechanisms, but altered PDT anti-angiogenic effects. GENERAL SIGNIFICANCE Combination of Metformin and PDT might represent a solution to enhance the efficacy, leading to a potential adjuvant role of PDT in melanoma therapy.
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Affiliation(s)
- Diana Tudor
- Department of Physiology, University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Iuliana Nenu
- Department of Physiology, University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | | | - Diana Olteanu
- Department of Physiology, University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Mihai Cenariu
- Department of Biochemistry, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Flaviu Tabaran
- Department of Pathology University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Rodica Mariana Ion
- Nanomedicine Research Group, National Institute for Research & Development in Chemistry and Petrochemistry - ICECHIM, Bucharest, Romania
| | - Lucian Gligor
- OSRAM Opto Semiconductors, OSRAM Romania, Global City Business Park, Voluntari, Ilfov, Romania
| | - Ioana Baldea
- Department of Physiology, University of Medicine and Pharmacy, Cluj-Napoca, Romania
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21
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Oros A, Catoi C, Gal A, Taulescu M, Tabaran F, Negru M, Nagy A. Zinc Phosphide Poisoning in a Dog. J Comp Pathol 2017. [DOI: 10.1016/j.jcpa.2016.11.262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Cucolas C, Daneasa AI, Olteanu D, Decea N, Moldovan R, Tabaran F, Filip GA. Resveratrol and curcumin as protective agents in an experimental rat model of intestinal ischemia and reperfusion. Can J Physiol Pharmacol 2016; 94:1151-1158. [DOI: 10.1139/cjpp-2016-0085] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The aim of this study was to evaluate the protective effects of resveratrol and curcumin in an experimental rat model of intestinal ischemia–reperfusion (I/R). Forty-eight adult Wistar rats were used: 12 animals undergoing the sham surgery and 36 animals undergoing laparotomy, with 15 min of mesentric artery clamping. The animals from the latter group (n = 12) were pretreated, for 1 week, with vehicle (CTR), resveratrol (RES), and curcumin (CUR). After 1 h and 6 h of reperfusion, respectively, cyclooxigenase (COX)-2, mucin-1, E-cadherin, nuclear factor (NK)-κB expressions, and tumor necrosis factor related apoptosis-inducing ligand (TRAIL) were assessed in the small intestine. Oxidative stress markers were determined in tissue homogenate and serum, and histopathological analysis was performed. Pretreatment with RES decreased the expression of COX-2 and NF-κB at both intervals and increased E-cadherin (p < 0.05) and mucin-1 production after 1 h. CUR had a beneficial effect on COX-2, NF-κB, and E-cadherin expressions, both after 1 h and after 6 h (p < 0.0001). The two compounds increased TRAIL levels and had a protective effect on oxidative stress and histopathological lesions, both after 1 h and after 6 h. Our results suggested that RES and CUR had beneficial effects in intestinal I/R and may represent a promising option for complementary treatment of this pathological condition.
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Affiliation(s)
- Cristina Cucolas
- Department of Physiology, “Iuliu Haţieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Alexandra Ioana Daneasa
- Department of Physiology, “Iuliu Haţieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Diana Olteanu
- Department of Physiology, “Iuliu Haţieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Nicoleta Decea
- Department of Physiology, “Iuliu Haţieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Remus Moldovan
- Department of Physiology, “Iuliu Haţieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Flaviu Tabaran
- Department of Pathology, University of Agricultural Sciences and Veterinary Medicine, 400372, Cluj-Napoca, Romania
| | - Gabriela Adriana Filip
- Department of Physiology, “Iuliu Haţieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
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23
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Paşcalău V, Soritau O, Popa F, Pavel C, Coman V, Perhaita I, Borodi G, Dirzu N, Tabaran F, Popa C. Curcumin delivered through bovine serum albumin/polysaccharides multilayered microcapsules. J Biomater Appl 2015; 30:857-72. [DOI: 10.1177/0885328215603797] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The aim of the paper is to obtain and characterize k-carrageenan–chitosan dual hydrogel multilayers shell BSA gel microcapsules, as a carrier for curcumin, and as a possible antitumoral agent in biological studies. We used the CaCO3 template to synthesize non-toxic CaCO3/BSA particles as microtemplates by coprecipitating a CaCl2 solution that contains dissolved BSA, with an equimolar Na2CO3 solution. The microcapsules shell is assembled through a layer-by-layer deposition technique of calcium cross-linked k-carrageenan hydrogel alternating with polyelectrolite complex hydrogel formed via electrostatic interactions between k-carrageenan and chitosan. After the removal of CaCO3 through Ca2+ complexation with EDTA, and by a slightly treatment with HCl diluted solution, the BSA core is turned into a BSA gel through a thermal treatment. The BSA gel microcapsules were then loaded with curcumin, through a diffusion process from curcumin ethanolic solution. All the synthesized particles and microcapsules were stucturally characterized by: Fourier Transform Infrared Spectroscopy, UV–Vis Spectrometry, X-ray diffraction, thermal analysis, fluorescence spectroscopy, fluorescence optical microscopy, confocal laser scanning microscopy and scanning electron microscopy. The behavior of curcumin loaded microcapsules in media of different pH (SGF, SIF and PBS) was studied in order to reveal the kinetics and the release profile of curcumin. The in vitro evaluation of the antitumoral activity of encapsulated curcumin microcapsules on HeLa cell line and the primary culture of mesenchymal stem cells is the main reason of the microcapsules synthesis as BSA-based vehicle meant to enhance the biodisponibility of curcumin, whose anti-tumor, anti-oxidant and anti-inflammatory properties are well known.
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Affiliation(s)
- V Paşcalău
- Technical University of Cluj-Napoca, Cluj-Napoca, Romania
| | - O Soritau
- The Oncology Institute Prof. Dr. I. Chiricuta, Cluj-Napoca, Romania
| | - F Popa
- Technical University of Cluj-Napoca, Cluj-Napoca, Romania
| | - C Pavel
- Technical University of Cluj-Napoca, Cluj-Napoca, Romania
| | - V Coman
- “Raluca Ripan” Institute for Research in Chemistry, Cluj-Napoca, Romania
| | - I Perhaita
- “Raluca Ripan” Institute for Research in Chemistry, Cluj-Napoca, Romania
| | - G Borodi
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - N Dirzu
- The Oncology Institute Prof. Dr. I. Chiricuta, Cluj-Napoca, Romania
| | - F Tabaran
- University of Agricultural Science and Veterinary Medicine, Cluj-Napoca, Romania
| | - C Popa
- Technical University of Cluj-Napoca, Cluj-Napoca, Romania
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Nagy AL, Bolfa P, Mihaiu M, Catoi C, Oros A, Taulescu M, Tabaran F. Intentional fatal metallic phosphide poisoning in a dog--a case report. BMC Vet Res 2015; 11:158. [PMID: 26202780 PMCID: PMC4512158 DOI: 10.1186/s12917-015-0495-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Accepted: 07/16/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Metallic phosphides are extremely toxic pesticides that are regulated in their usage. Information concerning the impact of metallic phosphides on human health is abundant. Data regarding the clinical pathology of phosphide poisoning in humans or domestic and wild animals is largely incomplete with only a few cases of metallic phosphide poisoning being reported every year, especially in humans. For the majority of cases reported in dogs the data are vague or incomplete. Here we report a complete and detailed description of pathological changes in a case of intentional metallic phosphide poisoning in a dog including an exhaustive examination of the brain. CASE PRESENTATION A 1 year old, male, Belgian Shepherd crossbreed dog with a clean medical history and no observed clinical signs prior to death, was submitted for post mortem examination. The dog was found dead by the owner. Near the body a suspect mix of bread, fat and a blackish powder was found. The owner announced the authorities and submitted the animal and the possible bait for forensic examination. At necropsy, multisystemic necrotic and degenerative lesions were observed. Histological exam confirmed the presence of necrotic and degenerative lesions of variable severity in all of the examined organs. The toxicological forensic examination revealed the presence of the phosphine gas in the gastric content and the bait. CONCLUSION Metallic phosphide poisoning is a rarely reported entity, since the diagnosis of intentional poisoning with these compounds is a great challenge for forensic pathologists and toxicologists. To our knowledge, this is the first study describing the lesions completely in veterinary forensic toxicology. We assume that the toxic shows systemic endotheliotropism and damage of the endothelial cells responsible for the hemorrhagic lesions and for the secondary ischemic necrosis in various organs. This report will contribute to a better understanding of the pathogenesis in cases of acute metallic phosphide exposure in animals.
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Affiliation(s)
- Andras-Laszlo Nagy
- Department of Veterinary Toxicology, University of Agricultural Sciences and Veterinary Medicine, 3-5 Mănăştur Street, 400372, Cluj-Napoca, Romania.
| | - Pompei Bolfa
- Department of Biomedical Sciences, Ross University School of Veterinary Medicine, Basseterre, St. Kitts, West Indies.
| | - Marian Mihaiu
- Department of Animal Production and Food Safety, University of Agricultural Sciences and Veterinary Medicine, 3-5 Mănăştur Street, 400372, Cluj-Napoca, Romania.
| | - Cornel Catoi
- Department of Veterinary Pathology, University of Agricultural Sciences and Veterinary Medicine, 3-5 Mănăştur Street, 400372, Cluj-Napoca, Romania.
| | - Adrian Oros
- Department of Veterinary Toxicology, University of Agricultural Sciences and Veterinary Medicine, 3-5 Mănăştur Street, 400372, Cluj-Napoca, Romania.
| | - Marian Taulescu
- Department of Veterinary Pathology, University of Agricultural Sciences and Veterinary Medicine, 3-5 Mănăştur Street, 400372, Cluj-Napoca, Romania.
| | - Flaviu Tabaran
- Department of Veterinary Pathology, University of Agricultural Sciences and Veterinary Medicine, 3-5 Mănăştur Street, 400372, Cluj-Napoca, Romania.
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Matea CT, Mocan T, Tabaran F, Iancu C, Mocan LC. Rational design of gold nanocarrier for the delivery of JAG-1 peptide. J Nanobiotechnology 2015; 13:41. [PMID: 26077042 PMCID: PMC4469399 DOI: 10.1186/s12951-015-0100-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Accepted: 05/20/2015] [Indexed: 12/23/2022] Open
Abstract
Background Unique properties exhibited by nanoparticles makes them great candidates for applications in physics, chemistry, biology, material science and medicine. The biological applications of water-soluble gold nanoparticles range from contrast agents, delivery vehicles to therapeutics. Notch signaling is a complex network that orchestrates cell fate decisions, which involves proliferation, migration, differentiation and cell death in organisms ranging from insects to humans. Studies have showed that a correct orientation of the Jag-1 signalling protein on the substrates proves to be of great importance when promoting Jagged-1 Notch interactions, also the availability of the ligands, super cedes the importance of their concentration. Results The aim of the present study was to synthetize a Jag-1 functionalized nanocarrier, which would promote an efficient interaction between the Jag-1 peptide and the Notch receptor. To this end, two routes for gold nanoparticle-peptide assembly were investigated, and the synthetized bio-nanostructures were characterized and compared by means of UV–Vis, FT-IR, DLS and AFM techniques. Conclusions We have obtained a stable, monodisperse, hetero-functionalized GNP-PEG-JAG-1 bio-nanostructure for Notch pathway activation applications. Electronic supplementary material The online version of this article (doi:10.1186/s12951-015-0100-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Cristian T Matea
- 3rd Surgery Clinic, Department of Nanomedicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.
| | - Teodora Mocan
- 3rd Surgery Clinic, Department of Nanomedicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania. .,Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.
| | - Flaviu Tabaran
- Department of Pathology, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania.
| | - Cornel Iancu
- 3rd Surgery Clinic, Department of Nanomedicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.
| | - Lucian-Constantin Mocan
- 3rd Surgery Clinic, Department of Nanomedicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.
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Mocan T, Matea C, Tabaran F, Iancu C, Orasan R, Mocan L. In Vitro Administration of Gold Nanoparticles Functionalized with MUC-1 Protein Fragment Generates Anticancer Vaccine Response via Macrophage Activation and Polarization Mechanism. J Cancer 2015; 6:583-92. [PMID: 26000051 PMCID: PMC4439945 DOI: 10.7150/jca.11567] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Accepted: 04/13/2015] [Indexed: 12/17/2022] Open
Abstract
Therapeutic cancer vaccines (or active immunotherapy) aim to guide the patient's personal immune system to eradicate cancer cells. An exciting approach to cancer vaccines has been offered by nanoscale drug delivery systems containing tumor associated antigens (TAAs). Their capacity to stimulate the immune system has been suggested during late years. However, the role of the macrophages as key-elements in antigen-presentation process following TAAs-containing nanosystems is not completely understood. We aimed to evaluate the effect of gold nanoparticles functionalized with mucin-1 peptide (MUC-1) on murine peritoneal macrophages. Gold nanoparticles, obtained using a modified Turkevich method, were functionalized with MUC-1 protein using Clealand's reagent. The obtained GNP-MUC-1 solution was used to treat at various concentrations monolayers of peritoneum-derived macrophages that were further analyzed using confocal and hyperspectral microscopy, ELISA assays and spectroscopic techniques. The GNP-MUC-1 nano-construct had proven to function as a powerful macrophage activator with consequent release of cytokines such as: TNF-ɑ, IL-6, IL-10 and IL-12 on peritoneal macrophages we have isolated from mice. Our results demonstrate optimization of antigen-presenting process and predominant M1 polarization following exposure GNP-MUC-1. To our best knowledge this is the first study to evaluate the anticancer effects of a newly designed nano-biocompound on the complex antigen- processing apparatus of peritoneal macrophages.
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Affiliation(s)
- Teodora Mocan
- 2. Department of Nanomedicine, Institute of Gastroenterology and Hepatology, 19-21 Croitorilor St., 400162 Cluj-Napoca, Romania
- 3. Department of Physiology, “Iuliu Hatieganu” University of Medicine and Pharmacy, no. 1 Clinicilor Street., 400006 Cluj-Napoca, Romania
| | - Cristian Matea
- 1. 3rd Surgery Clinic, “Iuliu Hatieganu” University of Medicine and Pharmacy, 19-21 Croitorilor St., 400162 Cluj-Napoca, Romania
- 2. Department of Nanomedicine, Institute of Gastroenterology and Hepatology, 19-21 Croitorilor St., 400162 Cluj-Napoca, Romania
| | - Flaviu Tabaran
- 2. Department of Nanomedicine, Institute of Gastroenterology and Hepatology, 19-21 Croitorilor St., 400162 Cluj-Napoca, Romania
- 4. Department of Pathology, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania; Calea Mănăștur 3-5, Cluj-Napoca 400372
| | - Cornel Iancu
- 1. 3rd Surgery Clinic, “Iuliu Hatieganu” University of Medicine and Pharmacy, 19-21 Croitorilor St., 400162 Cluj-Napoca, Romania
- 2. Department of Nanomedicine, Institute of Gastroenterology and Hepatology, 19-21 Croitorilor St., 400162 Cluj-Napoca, Romania
| | - Remus Orasan
- 3. Department of Physiology, “Iuliu Hatieganu” University of Medicine and Pharmacy, no. 1 Clinicilor Street., 400006 Cluj-Napoca, Romania
| | - Lucian Mocan
- 1. 3rd Surgery Clinic, “Iuliu Hatieganu” University of Medicine and Pharmacy, 19-21 Croitorilor St., 400162 Cluj-Napoca, Romania
- 2. Department of Nanomedicine, Institute of Gastroenterology and Hepatology, 19-21 Croitorilor St., 400162 Cluj-Napoca, Romania
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Mocan L, Ilie I, Matea C, Tabaran F, Kalman E, Iancu C, Mocan T. Surface plasmon resonance-induced photoactivation of gold nanoparticles as bactericidal agents against methicillin-resistant Staphylococcus aureus. Int J Nanomedicine 2014; 9:1453-61. [PMID: 24711697 PMCID: PMC3968082 DOI: 10.2147/ijn.s54950] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [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] [Indexed: 01/02/2023] Open
Abstract
Systemic infections caused by methicillin-resistant Staphylococcus aureus (MRSA) and other bacteria are responsible for millions of deaths worldwide, and much of this mortality is due to the rise of antibiotic-resistant organisms as a result of natural selection. Gold nanoparticles synthesized using the standard wet chemical procedure were photoexcited using an 808 nm 2 W laser diode and further administered to MRSA bacteria. Flow cytometry, transmission electron microscopy, contrast phase microscopy, and fluorescence microscopy combined with immunochemical staining were used to examine the interaction of the photoexcited gold nano-particles with MRSA bacteria. We show here that phonon–phonon interactions following laser photoexcitation of gold nanoparticles exhibit increased MRSA necrotic rates at low concentrations and short incubation times compared with MRSA treated with gold nanoparticles alone. These unique data may represent a step forward in the study of bactericidal effects of various nanomaterials, with applications in biology and medicine.
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Affiliation(s)
- Lucian Mocan
- 3rd Surgery Clinic, Department of Nanomedicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ioana Ilie
- Department of Endocrinology, Department of Nanomedicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Cristian Matea
- 3rd Surgery Clinic, Department of Nanomedicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Flaviu Tabaran
- 3rd Surgery Clinic, Department of Nanomedicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ersjebet Kalman
- 3rd Surgery Clinic, Department of Nanomedicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Cornel Iancu
- 3rd Surgery Clinic, Department of Nanomedicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Teodora Mocan
- Department of Physiology, Department of Nanomedicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Ilie I, Ilie R, Mocan T, Tabaran F, Iancu C, Mocan L. Nicotinamide-functionalized multiwalled carbon nanotubes increase insulin production in pancreatic beta cells via MIF pathway. Int J Nanomedicine 2013; 8:3345-53. [PMID: 24039418 PMCID: PMC3770514 DOI: 10.2147/ijn.s48223] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Recent data in the literature support the role of nicotinamide (NA) as a pharmacologic agent that stimulates pancreatic beta-cells to produce insulin in vitro. There are data showing that carbon nanotubes may be useful in initiating and maintaining cellular metabolic responses. This study shows that administration of multiwalled carbon nanotubes (MWCNTs) functionalized with nicotinamide (NA-MWCNTs) leads to significant insulin production compared with individual administration of NA, MWCNTs, and a control solution. Treatment of 1.4E7 cells for 30 minutes with NA-MWCNTs at concentrations ranging from 1 mg/L to 20 mg/L resulted in significantly increased insulin release (0.18 ± 0.026 ng/mL for 1 mg/L, 0.21 ± 0.024 ng/mL for 5 mg/L, and 0.27 ± 0.028 ng/mL for 20 mg/L). Thus, compared with cells treated with NA only (0.1 ± 0.01 ng/mL for 1 mg/L, 0.12 ± 0.017 ng/mL for 5 mg/L, and 0.17 ± 0.01 ng/mL for 20 mg/L) we observed a significant positive effect on insulin release in cells treated with NA-MWCNTs. The results were confirmed using flow cytometry, epifluorescence microscopy combined with immunochemistry staining, and enzyme-linked immunosorbent assay techniques. In addition, using immunofluorescence microscopy techniques, we were able to demonstrate that MWCNTs enhance insulin production via the macrophage migration inhibitory factor pathway. The application and potential of NA combined with MWCNTs as an antidiabetic agent may represent the beginning of a new chapter in the nanomediated treatment of diabetes mellitus.
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Affiliation(s)
- Ioana Ilie
- Department of Endocrinology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Razvan Ilie
- Department of Microbiology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Teodora Mocan
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Flaviu Tabaran
- Third Surgery Clinic, Department of Nanomedicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Cornel Iancu
- Third Surgery Clinic, Department of Nanomedicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Lucian Mocan
- Third Surgery Clinic, Department of Nanomedicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Clichici S, Biris AR, Catoi C, Filip A, Tabaran F. Short-term splenic impact of single-strand DNA functionalized multi-walled carbon nanotubes intraperitoneally injected in rats. J Appl Toxicol 2013; 34:332-44. [PMID: 23677818 DOI: 10.1002/jat.2883] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Revised: 03/10/2013] [Accepted: 03/10/2013] [Indexed: 11/07/2022]
Abstract
In recent years, a great deal of studies have focused on the possible toxicity of carbon nanotubes (CNT), as a result of their potential applications in the field of nanotechnologies. The investigation of spleen toxicity is part of the carbon nanotubes-induced toxicity assessment. In this study, we investigated the possible toxic effects of CNT on the rat spleen, after intraperitoneally (i.p.) administration of a single dose [1.5 ml; 2 mg multi-walled (MW) CNT per body weight (bw)] of multi-walled carbon nanotubes (exterior diameter 15-25 nm, interior diameter 10-15 nm, surface 88 m(2) g(-1) ) functionalized 1:1 with single-strand DNA (ss-DNA-MWCNT, 270 mg l(-1) ). CNT functionalization with DNA determines a stable dispersion in the body fluids. For the detection of carbon nanotubes in the spleen, Raman spectroscopy, histopathologic examination, confocal microscopy and transmission electron microscopy (TEM) were performed at different time points (1, 6, 24, 48 and 144 h) after MWCNT administration. The dynamics of oxidative stress parameters (malondialdehyde, protein carbonyls and reduced glutathione), along with nitrosative stress parameters (nitric oxide, inducible NO synthase), the pro-inflammatory cytokines [interleukin-(IL)-1β] and the number of cells expressing caspase 3 and proliferating cell nuclear antigen (PCNA) were assessed. Our results indicate that, after i.p. administration, MWCNT translocate progressively in the spleen, with a peak of concentration after 48 h, and determine lymphoid hyperplasia and an increase in the number of cells which undergo apoptosis, in parallel with the enhancement of the mitosis in the white pulp and with transient alterations of oxidative stress and inflammation that need further investigations for a longer period of monitoring.
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Affiliation(s)
- Simona Clichici
- Department of Physiology, University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Bolfa P, Tabaran F, Niculae M, Borza G, Gal A, Bouari C, Taulescu M, Nagy A, Farcas L, Vidrighinescu R, Catoi C. Ulcerative Enteritis-like Disease Associated with Clostridium beijerinckii–butyricum in a Pigeon (Columba livia). J Comp Pathol 2013. [DOI: 10.1016/j.jcpa.2012.11.164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Nagy AL, Bolfa P, Taulescu M, Tabaran F, Bouari C, Gal A, Borza G, Catoi C. Immunohistochemical Expression of Caveolin-1 in Canine Chronic Liver Disease. J Comp Pathol 2013. [DOI: 10.1016/j.jcpa.2012.11.226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bolfa P, Cadore J, Nolf M, Catoi C, Vidrighinescu R, Taulescu M, Nagy A, Tabaran F, Farcas L, Mornex J, Leroux C. Interstitial Pneumonia in Horses Infected with Equine Infectious Anaemia Virus. J Comp Pathol 2013. [DOI: 10.1016/j.jcpa.2012.11.116] [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: 11/16/2022]
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Olteanu D, Filip A, Mureşan A, Nagy A, Tabaran F, Moldovan R, Decea N, Catoi C, Clichici S. The effects of chitosan and low dose dexamethasone on extrahepatic cholestasis after bile duct ligation in Wistar rats. ACTA ACUST UNITED AC 2012; 99:61-73. [DOI: 10.1556/aphysiol.99.2012.1.7] [Citation(s) in RCA: 19] [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] [Indexed: 12/13/2022]
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Bolfa P, Catoi C, Filip A, Gal A, Taulescu M, Nagy A, Tabaran F, Borza G, Moussa R, Cuc C. Protective Mechanisms of a Grape Seed Extract (Burgund Mare Variety) on Chronic Ultraviolet B Irradiation-induced Skin Damage in SKH-1 Hairless MICE. J Comp Pathol 2012. [DOI: 10.1016/j.jcpa.2011.11.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Catoi C, von Wild T, von Wild K, Trillenberg P, Heidbreder M, Muresanu D, Mailänder P, Miclaus V, Tabaran F. Neuromodulation after Nerve Grafting into the Spinal Cord in Rats. J Comp Pathol 2012. [DOI: 10.1016/j.jcpa.2011.11.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Tabaran F. The Biodistribution and Acute Systemic Toxicity of Single-Walled Carbon nanotubeS Functionalized with Single-Strand DNA in Wistar Rats. J Comp Pathol 2010. [DOI: 10.1016/j.jcpa.2010.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Taulescu M, Catoi C, Bolfa P, Ciobanu L, Gal A, Tabaran F. Gastric Polyps and Spontaneous Helicobacter spp. Infection in Dogs. J Comp Pathol 2010. [DOI: 10.1016/j.jcpa.2010.09.152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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