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Lee S, Blanco T, Musayeva A, Dehghani S, Narimatsu A, Forouzanfar K, Ortiz G, Kahale F, Wang S, Chen Y, Dohlman TH, Chauhan SK, Dana R. Myeloid-derived suppressor cells promote allograft survival by suppressing regulatory T cell dysfunction in high-risk corneal transplantation. Am J Transplant 2024:S1600-6135(24)00218-1. [PMID: 38514014 DOI: 10.1016/j.ajt.2024.03.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 02/29/2024] [Accepted: 03/13/2024] [Indexed: 03/23/2024]
Abstract
Highly inflamed and neovascularized corneal graft beds are known as high-risk (HR) environments for transplant survival. One of the primary factors leading to this rejection is reduction in the suppressive function of regulatory T cells (Treg). Our results show that myeloid-derived suppressor cells (MDSC) counteract interleukin-6-mediated Treg dysfunction by expressing interleukin-10. Additionally, MDSC maintain forkhead box P3 stability and their ability to suppress IFN-γ+ Th1 cells. Administering MDSC to HR corneal transplant recipients demonstrates prolonged graft survival via promotion of Treg while concurrently suppressing IFN-γ+ Th1 cells. Moreover, MDSC-mediated donor-specific immune tolerance leads to long-term corneal graft survival as evidenced by the higher survival rate or delayed survival of a second-party C57BL/7 (B6) graft compared to those of third-party C3H grafts observed in contralateral low-risk or HR corneal transplantation of BALB/c recipient mice, respectively. Our study provides compelling preliminary evidence demonstrating the effectiveness of MDSC in preventing Treg dysfunction, significantly improving graft survival in HR corneal transplantation, and showing promising potential for immune tolerance induction.
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Affiliation(s)
- Seokjoo Lee
- Laboratory of Corneal Immunology, Transplantation, and Regeneration, Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA
| | - Tomas Blanco
- Laboratory of Corneal Immunology, Transplantation, and Regeneration, Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA
| | - Aytan Musayeva
- Laboratory of Corneal Immunology, Transplantation, and Regeneration, Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA
| | - Shima Dehghani
- Laboratory of Corneal Immunology, Transplantation, and Regeneration, Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA
| | - Akitomo Narimatsu
- Laboratory of Corneal Immunology, Transplantation, and Regeneration, Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA
| | - Katayoon Forouzanfar
- Laboratory of Corneal Immunology, Transplantation, and Regeneration, Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA
| | - Gustavo Ortiz
- Laboratory of Corneal Immunology, Transplantation, and Regeneration, Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA
| | - Francesca Kahale
- Laboratory of Corneal Immunology, Transplantation, and Regeneration, Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA
| | - Shudan Wang
- Laboratory of Corneal Immunology, Transplantation, and Regeneration, Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA
| | - Yihe Chen
- Laboratory of Corneal Immunology, Transplantation, and Regeneration, Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA
| | - Thomas H Dohlman
- Laboratory of Corneal Immunology, Transplantation, and Regeneration, Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA
| | - Sunil K Chauhan
- Laboratory of Corneal Immunology, Transplantation, and Regeneration, Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA
| | - Reza Dana
- Laboratory of Corneal Immunology, Transplantation, and Regeneration, Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA.
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Taketani Y, Dehghani S, Sinha S, Freitag SK, Papaliodis G, Foster S, Dohlman TH, Dana R. Concurrence of Ocular Cicatricial Pemphigoid in Chronic Ocular Graft-Versus-Host Disease. Cornea 2024; 43:387-390. [PMID: 38128104 DOI: 10.1097/ico.0000000000003386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 08/04/2023] [Indexed: 12/23/2023]
Abstract
PURPOSE The aim of this study was to report a series of 3 patients with ocular graft-versus-host disease (oGVHD) with progressive cicatricial conjunctival changes who were diagnosed with ocular cicatricial pemphigoid (OCP) after conjunctival biopsy. METHODS This study was a retrospective case series. RESULTS Three patients who received hematopoietic stem cell transplantation for hematologic malignancies developed oGVHD and subsequently were diagnosed with OCP. Case 1 was a 73-year-old woman with oGVHD who developed symblepharon and showed positive IgA, IgG, and C3 staining of the basement membrane zone (BMZ) on conjunctival biopsy, consistent with OCP. She was systemically treated with tacrolimus and prednisone with resolution of conjunctival inflammation. Case 2 was a 68-year-old man with oGVHD who developed symblepharon, severe dry eye, and corneal epithelial defect. An initial conjunctival biopsy was negative, but a repeat biopsy performed 10 years later showed positive BMZ IgA and IgG staining. Healing of the epithelial defect was achieved after treatment with high-dose systemic cyclosporine. Case 3 was a 75-year-old woman with oGVHD who had a nonhealing corneal epithelial defect and symblepharon with positive IgA BMZ staining on conjunctival biopsy, consistent with OCP. The patient responded well to methotrexate with healing of the epithelial defect. CONCLUSIONS Although low-grade conjunctival fibrotic changes may be observed in chronic oGVHD, development of severe and progressive cicatricial changes, including symblepharon formation, should prompt consideration of biopsy to rule out concurrent OCP, the management of which differs from that of oGVHD.
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Affiliation(s)
- Yukako Taketani
- Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA; and
| | - Shima Dehghani
- Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA; and
| | - Shruti Sinha
- Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA; and
| | - Suzanne K Freitag
- Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA; and
| | - George Papaliodis
- Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA; and
| | - Stephen Foster
- Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA; and
- Massachusetts Eye Research and Surgery Institution, Waltham, MA
| | - Thomas H Dohlman
- Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA; and
| | - Reza Dana
- Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA; and
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Dehghani S, Aghaee Z, Soleymani S, Tafazoli M, Ghabool Y, Tavassoli A. An overview of the production of tissue extracellular matrix and decellularization process. Cell Tissue Bank 2024; 25:369-387. [PMID: 37812368 DOI: 10.1007/s10561-023-10112-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 09/09/2023] [Indexed: 10/10/2023]
Abstract
Thousands of patients need an organ transplant yearly, while only a tiny percentage have this chance to receive a tissue/organ transplant. Nowadays, decellularized animal tissue is one of the most widely used methods to produce engineered scaffolds for transplantation. Decellularization is defined as physically or chemically removing cellular components from tissues while retaining structural and functional extracellular matrix (ECM) components and creating an ECM-derived scaffold. Then, decellularized scaffolds could be reseeded with different cells to fabricate an autologous graft. Effective decellularization methods preserve ECM structure and bioactivity through the application of the agents and techniques used throughout the process. The most valuable agents for the decellularization process depend on biological properties, cellular density, and the thickness of the desired tissue. ECM-derived scaffolds from various mammalian tissues have been recently used in research and preclinical applications in tissue engineering. Many studies have shown that decellularized ECM-derived scaffolds could be obtained from tissues and organs such as the liver, cartilage, bone, kidney, lung, and skin. This review addresses the significance of ECM in organisms and various decellularization agents utilized to prepare the ECM. Also, we describe the current knowledge of the decellularization of different tissues and their applications.
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Affiliation(s)
- Shima Dehghani
- Department of Biology, Kavian Institute of Higher Education, Mashhad, Iran
| | - Zahra Aghaee
- Department of Biology, Kavian Institute of Higher Education, Mashhad, Iran
| | - Safoura Soleymani
- Division of Biotechnology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Azadi Square, Mashhad, 9177948974, Iran
| | - Maryam Tafazoli
- Division of Biotechnology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Azadi Square, Mashhad, 9177948974, Iran
| | - Yasin Ghabool
- Department of Biology, Faculty of Sciences, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Amin Tavassoli
- Division of Biotechnology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Azadi Square, Mashhad, 9177948974, Iran.
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Surico PL, Kaufman AR, Lin J, Dehghani S, Dana R. Corneal Superficial Plaque Formation After Recombinant Human Nerve Growth Factor Use in a Patient With Neurotrophic Keratopathy and Limbal Stem Cell Deficiency From Mucous Membrane Pemphigoid. Cornea 2023:00003226-990000000-00423. [PMID: 38015976 DOI: 10.1097/ico.0000000000003442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 10/30/2023] [Indexed: 11/30/2023]
Abstract
PURPOSE The aim of this study was to report a rare observation of corneal superficial plaque formation after topical recombinant human nerve growth factor (rhNGF) treatment for a nonhealing epithelial defect in a patient with advanced mucous membrane pemphigoid, limbal stem cell deficiency, and neurotrophic keratopathy. METHODS This study was a case report. RESULTS A 72-year-old man with a complex course of mucous membrane pemphigoid, leading to cicatrizing keratoconjunctivits, limbal stem cell deficiency, and neurotrophic keratopathy presented with a recurrent persistent epithelial defect in the right eye. After a long course of unsuccessful epithelial healing, despite various treatment modalities, he was administered topical rhNGF (cenegermin 0.002%; Oxervate, Dompé US Inc., Boston, MA) which successfully resolved the epithelial defect. However, on day 22 posttreatment, an unusual white, thick, adherent corneal superficial plaque formed. rhNGF was stopped and the plaque was carefully removed. Subsequently, there was no recurrence, and the patient's epithelial healing remained stable. CONCLUSIONS Although the successful resolution of the persistent epithelial defect with rhNGF administration was notable, the development of the unusual epithelial overgrowth emphasizes the importance of vigilant monitoring and evaluation when using rhNGF in complex ocular conditions. Making informed decisions on the timing of discontinuing rhNGF can lead to desirable effects of the drug while mitigating additional side effects when managing such challenging cases.
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Affiliation(s)
- Pier Luigi Surico
- Department of Ophthalmology, Massachusetts Eye and Ear Institute, Harvard Medical School, Boston, MA
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Arish M, Sargazi M, Dehghani S, Sahami M, Dashipour A, Sarhadi S, Rouientan H. Long-term effects of intraoperative topical bevacizumab in sutureless scleral tunnel trabeculectomy: a prospective clinical trial. Int Ophthalmol 2023; 43:4225-4233. [PMID: 37561247 DOI: 10.1007/s10792-023-02833-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 07/27/2023] [Indexed: 08/11/2023]
Abstract
PURPOSE To investigate the long-term efficacy and safety of the novel method sutureless trabeculectomy with topical administration of bevacizumab. MATERIALS/METHODS Primary open-angle glaucoma patients with intraocular pressure (IOP) > 21 mmHg despite maximum tolerated medication were included in a single-blind prospective interventional clinical trial. Group 1 underwent sutureless scleral tunnel trabeculectomy with intraoperative topical administration of bevacizumab (1.25 mg) applied on the scleral incision for 1 min. Group 2 underwent sutureless trabeculectomy alone and group 3 (control group) underwent conventional trabeculectomy with mitomycin C (MMC). Outcome measures were surgical success, IOP, number of needed anti-glaucoma medications, and complications. Patients were followed for two years. RESULTS Finally, 50 eyes from group 1, 46 from group 2, and 47 from group 3 were analyzed. At the end of 24 months, 52% (n = 26) of group 1, 34.8% (n = 16) of group 2, and 57.4% (n = 27) of group 3 had complete success (IOP < 18 mmHg without medication). The difference was only significant between groups 2 and 3 (p = 0.003). 94% (n = 47) of group 1, 89.1% (n = 41) of group 2, and 91.5% (n = 43) of group 3 had qualified success (IOP < 18 mmHg with ≤ 2 anti-glaucoma medications) (p = 0.69). There was a significant difference in the overall IOP mean between the three groups (p < 0.0001). There was no significant difference between the three groups in complication rates and the number of needed anti-glaucoma medications for IOP control. CONCLUSION Sutureless trabeculectomy with topical application of bevacizumab showed comparable surgical success rates with conventional trabeculectomy and MMC in long-term follow-up. Additionally, adjuvant use of topical bevacizumab had a significant positive impact on long-term IOP control.
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Affiliation(s)
- Mohammad Arish
- Alzahra Eye Hospital Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Meisam Sargazi
- Alzahra Eye Hospital Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.
| | - Shima Dehghani
- Alzahra Eye Hospital Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mahya Sahami
- Alzahra Eye Hospital Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Alireza Dashipour
- Department of Nutrition, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Saeedeh Sarhadi
- Department of Community Medicine, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Hamidreza Rouientan
- Ophthalmic Research Center, Research Institute for Ophthalmology and Vision Science, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Alemi H, Dehghani S, Forouzanfar K, Surico PL, Narimatsu A, Musayeva A, Sharifi S, Wang S, Dohlman TH, Yin J, Chen Y, Dana R. Insights into mustard gas keratopathy- characterizing corneal layer-specific changes in mice exposed to nitrogen mustard. Exp Eye Res 2023; 236:109657. [PMID: 37722586 DOI: 10.1016/j.exer.2023.109657] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/11/2023] [Accepted: 09/15/2023] [Indexed: 09/20/2023]
Abstract
Exposure to mustard agents, such as sulfur mustard (SM) and nitrogen mustard (NM), often results in ocular surface damage. This can lead to the emergence of various corneal disorders that are collectively referred to as mustard gas keratopathy (MGK). In this study, we aimed to develop a mouse model of MGK by using ocular NM exposure, and describe the subsequent structural changes analyzed across the different layers of the cornea. A 3 μL solution of 0.25 mg/mL or 5 mg/mL NM was applied to the center of the cornea via a 2-mm filter paper for 5 min. Mice were evaluated prior to and after exposure on days 1, 3, 7, 14, and 28 for 4 weeks using slit lamp examination with fluorescein staining. Anterior segment optical coherence tomography (AS-OCT) and in vivo confocal microscopy (IVCM) tracked changes in the epithelium, stroma, and endothelium of the cornea. Histologic evaluation was used to examine corneal cross-sections collected at the completion of follow-up. Following exposure, mice experienced central corneal epithelial erosion and thinning, accompanied by a decreased number of nerve branches in the subbasal plexus and increased activated keratocytes in the stroma in both dosages. The epithelium was recovered by day 3 in the low dose group, followed by exacerbated punctuate erosions alongside persistent corneal edema that arose and continued onward to four weeks post-exposure. The high dose group showed persistent epitheliopathy throughout the study. The endothelial cell density was reduced, more prominent in the high dose group, early after NM exposure, which persisted until the end of follow-up, along with increased polymegethism and pleomorphism. Microstructural changes in the central cornea at 4 weeks post-exposure included dysmorphic basal epithelial cells and reduced epithelial thickness, and in the limbal cornea included decreased cellular layers. We present a mouse model of MGK using NM that successfully replicates ocular injury caused by SM in humans who have been exposed to mustard gas.
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Affiliation(s)
- Hamid Alemi
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Shima Dehghani
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Katayoon Forouzanfar
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Pier Luigi Surico
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Akitomo Narimatsu
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Aytan Musayeva
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Sina Sharifi
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Shudan Wang
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Thomas H Dohlman
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Jia Yin
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Yihe Chen
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA.
| | - Reza Dana
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA.
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Sargazi M, Dehghani S, Dahmardeh M, Mohammadi SO. Ocular Manifestations of Alport Syndrome: Report and Comparison of Two Cases. Cureus 2023; 15:e47373. [PMID: 38022159 PMCID: PMC10657510 DOI: 10.7759/cureus.47373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/19/2023] [Indexed: 12/01/2023] Open
Abstract
We report two cases of Alport syndrome and compare the clinical presentations and imaging findings in these cases. The clinical examination consisted of best-corrected visual acuity (BCVA), direct ophthalmoscopy, and slit-lamp examination. Macular optical coherence tomography (OCT) and anterior segment OCT (AS-OCT) and were utilized to document the details of the anterior and posterior segment pathologies. In order to evaluate systemic presentations of Alport syndrome, nephrology, and otolaryngology were consulted for each patient. In this study, the first case was a 27-year-old female with progressive myopia, anterior lenticonus, and temporal retinal thinning found in the ocular examination that led to the diagnosis of Alport syndrome. She underwent clear lens extraction and intraocular lens implantation, restoring acceptable visual acuity. The second case was a 20-year-old male patient with low visual acuity, severe bilateral anterior lenticonus, bilateral cataract, and temporal retinal thinning. The patient later developed renal failure and is a candidate for kidney transplantation. In this case report, progressive renal failure, hearing loss, and ocular abnormalities were all observed. This is consistent with previously reported cases given the typical characteristics of Alport syndrome, a rare inherited disease. The severity of those characteristics was higher in the male subject, a finding also consistent with prior reports indicating that males are usually affected more frequently and more severely than females, given that Alport syndrome is generally inherited as an X-linked disorder. Additionally, anterior segment and macular OCTs seemed to be of considerable significance in the early diagnosis of Alport syndrome given the typical ocular manifestations e.g. anterior lenticonus or temporal retinal atrophy.
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Affiliation(s)
- Meisam Sargazi
- Ophthalmology, Zahedan University of Medical Sciences, Zahedan, IRN
| | - Shima Dehghani
- Ophthalmology, Zahedan University of Medical Sciences, Zahedan, IRN
| | - Mina Dahmardeh
- Ophthalmology, Zahedan University of Medical Sciences, Zahedan, IRN
| | - Seyed Omid Mohammadi
- Ophthalmology, Burnett School of Medicine at Texas Christian University, Fort Worth, USA
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Alemi H, Dehghani S, Musayeva A, Nadari A, Narimatsu A, Sharifi S, Forouzanfar K, Wang S, Dohlman TH, Yin J, Chen Y, Dana R. Insights into mustard gas keratopathy: Characterizing corneal layer-specific changes in mice exposed to nitrogen mustard. Exp Eye Res 2023:109495. [PMID: 37142048 DOI: 10.1016/j.exer.2023.109495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/20/2023] [Accepted: 05/02/2023] [Indexed: 05/06/2023]
Abstract
Exposure to mustard agents, such as sulfur mustard (SM) and nitrogen mustard (NM), often results in ocular surface damage. This can lead to the emergence of various corneal disorders that are collectively referred to as mustard gas keratopathy (MGK). In this study, we aimed to develop a mouse model of MGK by using ocular NM exposure, and describe the subsequent structural changes analyzed across the different layers of the cornea. A 3 μL solution of 0.25 mg/mL NM was applied to the center of the cornea via a 2-mm filter paper for 5 min. Mice were evaluated prior to and after exposure on days 1 and 3, and weekly for 4 weeks using slit lamp examination with fluorescein staining. Anterior segment optical coherence tomography (AS-OCT) and in vivo confocal microscopy (IVCM) tracked changes in the epithelium, stroma, and endothelium of the cornea. Histologic evaluation and immunostaining were used to examine corneal cross-sections collected at the completion of follow-up. A biphasic ocular injury was observed in mice exposed to NM, most prominent in the corneal epithelium and anterior stroma. Following exposure, mice experienced central corneal epithelial erosions and thinning, accompanied by a decreased number of nerve branches in the subbasal plexus and increased activated keratocytes in the stroma. The epithelium was recovered by day 3, followed by exacerbated punctuate erosions alongside persistent stromal edema that arose and continued onward to four weeks post-exposure. The endothelial cell density was reduced on the first day after NM exposure, which persisted until the end of follow-up, along with increased polymegethism and pleomorphism. Microstructural changes in the central cornea at this time included dysmorphic basal epithelial cells, and in the limbal cornea included decreased cellular layers and p63+ area, along with increased DNA oxidization. We present a mouse model of MGK using NM that successfully replicates ocular injury caused by SM in humans who have been exposed to mustard gas. Our research suggests DNA oxidation contributes to the long-term effects of nitrogen mustard on limbal stem cells.
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Affiliation(s)
- Hamid Alemi
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Shima Dehghani
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Aytan Musayeva
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Amirreza Nadari
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Akitomo Narimatsu
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Sina Sharifi
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Katayoun Forouzanfar
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Shudan Wang
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Thomas H Dohlman
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Jia Yin
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Yihe Chen
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA.
| | - Reza Dana
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA.
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Pourazizi M, Dehghani S, Abtahi-Naeini B. [Translated article] Herpes Zoster Ophthalmicus and COVID-19: A Post-COVID-19 Complication or a Coincidence? Actas Dermosifiliogr 2022; 113 Suppl 1:TS16-TS17. [PMID: 36228706 PMCID: PMC9549712 DOI: 10.1016/j.ad.2022.10.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 10/04/2021] [Indexed: 12/25/2022] Open
Affiliation(s)
- M. Pourazizi
- Isfahan Eye Research Center, Department of Ophthalmology, Isfahan University of Medical Sciences, Isfahan, Iran
| | - S. Dehghani
- School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - B. Abtahi-Naeini
- Pediatric Dermatology Division of Department of Pediatrics, Imam Hossein Children's Hospital, Isfahan University of Medical Sciences, Isfahan, Iran,Skin Diseases and Leishmaniasis Research Center, Isfahan University of Medical Sciences, Isfahan, Iran,Corresponding author
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Dehghani S, Edalatian Dovom MR, Yavarmanesh M, Sankian M. In vitro Evaluation of Potential Probiotic Characteristics and Survival of Human and Foodborne Lactic Acid Bacteria (Lacticaseibacillus rhamnosus and Lactiplantibacillus plantarum) in Mice Gastrointestinal Tract. APPL BIOCHEM MICRO+ 2022. [DOI: 10.1134/s0003683822100052] [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: 03/01/2023]
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Pourazizi M, Dehghani S, Abtahi-Naeini B. [Herpes Zoster Ophthalmicus and COVID-19: A Post-COVID-19 Complication or a Coincidence?]. Actas Dermosifiliogr 2022; 113:S16-S17. [PMID: 34658381 PMCID: PMC8507568 DOI: 10.1016/j.ad.2021.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Indexed: 12/30/2022] Open
Affiliation(s)
- M. Pourazizi
- Centro de Investigación Ocular de Isfahan, Departamento de Oftalmología, Universidad de Ciencias Médicas de Isfahan, Isfahan, Irán
| | - S. Dehghani
- Facultad de Medicina, Universidad de Ciencias Médicas de Isfahan, Isfahan, Irán
| | - B. Abtahi-Naeini
- División de Dermatología Pediátrica del Departamento de Pediatría, Hospital Infantil Imam Hossein, Universidad de Ciencias Médicas de Isfahan. Centro de Investigación de Enfermedades de la Piel y Leishmaniasis, Universidad de Ciencias Médicas de Isfahan, Isfahan, Irán,Autor para correspondencia
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Dehghani S, Ghassemi F, Mahmoudzadeh R, Khodabandeh A, Ghanaati H, Termehchi G. Five-year experience in treatment of retinoblastoma with intra-arterial chemotherapy: A single-center analysis. J Curr Ophthalmol 2021; 33:468-474. [PMID: 35128196 PMCID: PMC8772483 DOI: 10.4103/joco.joco_113_21] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 08/04/2021] [Accepted: 08/06/2021] [Indexed: 12/04/2022] Open
Abstract
Purpose: To report our 5-year experience in treating retinoblastoma (RB) with intra-arterial chemotherapy (IAC) as a primary or secondary therapy, without adjuvant intravitreal chemotherapy. Methods: A retrospective study was conducted on 70 eyes with intraocular RB that were treated with primary or secondary IAC from December 2010-2015. Demographic characteristics, clinical features, tumor control, and treatment complications were compared and reported. Results: Thirty-seven eyes had received IAC as a secondary therapy after failed/incomplete response to systemic chemotherapy, and 33 eyes had received IAC as a primary treatment. The mean age of patients was 25 ± 8.9 months, and the patients were followed for a mean of 24.5 ± 16.26 months. Overall, enucleation rates were significantly higher in advanced tumors (Group D and E) in both groups (both P < 0.05). The main reason for enucleation in this study group was being unresponsive to treatment (27.4%), with 76% of latter patients having vitreous seeds at the time of enucleation. Enucleation rates did not differ significantly between patients receiving primary (18/33, 54%) or secondary IAC (18/37, 48%) (P = 0.06). In addition, recurrence and complication rates did not differ significantly between eyes receiving IAC as their primary or secondary treatment (P > 0.05). Conclusion: In primary and secondary treatment of RB with IAC, the main findings that are globe salvage, recurrence, and complication rates were comparable when no adjuvant intravitreal chemotherapy was used.
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Khalili P, Adib NE, Jafari HK, Shamsi R, Dehghani S. A 24-year-old woman with sudden-onset, unilateral vision loss. Digit J Ophthalmol 2019; 25:72-78. [PMID: 32076392 DOI: 10.5693/djo.03.2019.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Parisa Khalili
- Al Zahra Eye Hospital, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Nazanin Ebrahimi Adib
- Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Hassan Khojasteh Jafari
- Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Shamsi
- Al Zahra Eye Hospital, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Shima Dehghani
- Al Zahra Eye Hospital, Zahedan University of Medical Sciences, Zahedan, Iran
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Pourmand G, Karbalai Saleh S, Mehrsai A, Gooran S, Khajavi MR, Razeghi E, Rahbar M, Pourhossein M, Dehghani S. Severity of Mitral Regurgitation before and after Kidney Transplantation. Int J Organ Transplant Med 2019; 10:167-169. [PMID: 33312461 PMCID: PMC7722517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023] Open
Abstract
BACKGROUND Perivalvular and valve involvement are prevalent in patients with end-stage renal disease (ESRD), especially in younger patients compared with normal population. Kidney transplantation improves the prognosis of these patients. Patients with cardiac valvular disease is also be improved following kidney transplantation. OBJECTIVE To evaluate the impact of renal transplantation on the severity of mitral regurgitation (MR). METHODS We studied 95 kidney transplantation candidates in Sina Hospital. The patients underwent echocardiography preoperatively and at the 3rd, 6th, and 12th months post-operatively. RESULTS Pre-operatively, the average MR fraction was 30%; MR volume 30 mL/beat; mitral valve mean gradient 1.8 mm Hg; mitral valve area 4.6 cm2; and mitral annular size 3 cm. No significant difference was observed among the measurements made at the 3rd, 6th, and 12th months post-operatively. CONCLUSION There was no significant association between the variables measured pre- and post-operatively. The reason might be the fact that patients with ESRD in Iran do not have to expect long transplant waiting lists and dialysis cannot affect their heart adversely.
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Affiliation(s)
- G. Pourmand
- Urology Research Center,Tehran University of Medical Science,Tehran,Iran
| | - S. Karbalai Saleh
- Department of Cardiology, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - A. Mehrsai
- Urology Research Center,Tehran University of Medical Science,Tehran,Iran
| | - S. Gooran
- Urology Research Center,Tehran University of Medical Science,Tehran,Iran
| | - M. R. Khajavi
- Urology Research Center,Tehran University of Medical Science,Tehran,Iran
| | - E. Razeghi
- Urology Research Center,Tehran University of Medical Science,Tehran,Iran
| | - M. Rahbar
- Urology Research Center,Tehran University of Medical Science,Tehran,Iran
| | - M. Pourhossein
- Urology Research Center,Tehran University of Medical Science,Tehran,Iran
| | - S. Dehghani
- Urology Research Center,Tehran University of Medical Science,Tehran,Iran
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Dehghani S, Rasoulianboroujeni M, Ghasemi H, Keshel SH, Nozarian Z, Hashemian MN, Zarei-Ghanavati M, Latifi G, Ghaffari R, Cui Z, Ye H, Tayebi L. 3D-Printed membrane as an alternative to amniotic membrane for ocular surface/conjunctival defect reconstruction: An in vitro & in vivo study. Biomaterials 2018; 174:95-112. [PMID: 29793112 DOI: 10.1016/j.biomaterials.2018.05.013] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 05/06/2018] [Accepted: 05/08/2018] [Indexed: 10/16/2022]
Abstract
BACKGROUND The aim of this study was to evaluate the surgical handling and clinical applicability of a specific 3D-printed membrane design fabricated using a gelatin, elastin and sodium hyaluronate blend for conjunctival reconstruction and compare it with amniotic membrane (AM), which is normally used in such surgeries. METHODS 3D printing technique was employed to fabricate the membrane based on gradient design. Prior to printing, rheometry was employed to optimize the ink composition. The printed membranes were then fully characterized in terms of physical and mechanical properties. In vitro viability, proliferation and adhesion of human limbal epithelial cells were assessed using MTT assay and scanning electron microscopy (SEM), respectively. Prior to in vivo experiment, surgical handling of each membrane was evaluated by three surgeons. In vivo evaluation was conducted through implanting the gelatin-based membranes and AM on induced conjunctival defects in rabbits (n = 8). Clinical observations, including epithelialization, inflammation severity, scar tissue formation and presence of granulation tissue, were recorded from day 1 through day 28. Histological examination was performed on all enucleated eyes on day 28. In addition to H&E staining, specific stains including Periodic Acid Schiff staining, Masson's Trichrome staining and immuno-histochemical staining for α-SMA were further used to assess goblet cell proliferation, healed sub-epithelial stroma and scar tissue formation and the presence of myofibroblasts, respectively. RESULTS Among all the examined compositions, a blend of 8% w/v gelatin, 2% w/v elastin and 0.5% w/v sodium hyaluronate was found to be appropriate for printing. The printed membranes had favorable optical characteristics (colorless and transparent), and the surgical handling was significantly easier compared to AM. Epithelial cells cultivated on the membranes indicated suitable viability and proliferation, and SEM images presented appropriate cell adhesion on the surface of the membranes. Clinical observations suggested similar epithelialization time (approximately 3 weeks) for both the membrane and AM grafted eyes but significantly lower levels of clinical inflammation in the membrane group from day 1 through day 28 (p = 0.01), which is a key advantage of using the printed membranes over the AM. Histological examination showed similar qualities in the healed epithelium in terms of cell morphology and cell layers. However, twice the density of goblet cells per 100 cells was observed in the gelatin-based membrane grafted group. Remnant of the degraded implant was seen in only 3 of the membranes, but in 7 of the AM grafted eyes. Inflammation and granulomatous reaction was significantly higher in sections containing the AM compared to membrane (p < 0.01 and p = 0.01, respectively). α-SMA staining was more evident, but not significantly different from the gelatin-based membrane, for the AM group (p = 0.25). CONCLUSION The designed gelatin-based membrane offers the necessary physical and mechanical characteristics needed for successful ocular surface/conjunctival defect construction and may be considered a promising alternative to AM due to a more predictable degradation pattern, higher goblet cell density on the healed epithelium, less inflammation and reduced scar tissue formation.
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Affiliation(s)
- Shima Dehghani
- Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Hamed Ghasemi
- Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran.
| | - Saeed Heidari Keshel
- Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Zohreh Nozarian
- Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Mehran Zarei-Ghanavati
- Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Golshan Latifi
- Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Ghaffari
- Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Zhanfeng Cui
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, OX1 3PJ, UK
| | - Hua Ye
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, OX1 3PJ, UK.
| | - Lobat Tayebi
- Marquette University School of Dentistry, Milwaukee, WI 53233, USA; Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, OX1 3PJ, UK.
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16
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Alipour F, Veisi Hampa F, Ashrafi E, Dehghani S. Factors Influencing Cyclotorsion During Photorefractive Keratectomy. J Refract Surg 2018; 34:106-112. [PMID: 29425389 DOI: 10.3928/1081597x-20171128-02] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 11/09/2017] [Indexed: 11/20/2022]
Abstract
PURPOSE To determine predictive factors for intra-operative cyclotorsion in photorefractive keratectomy (PRK). METHODS A retrospective statistical analysis of medical records pertaining to 3,996 eyes undergoing PRK was conducted. Outcome measures of this study were the likely existence of statistically significant relations between diverse and potentially influential factors and the occurrence of intraoperative cyclotorsion. RESULTS A total of 96% of examined medical records indicated some degree of cyclotorsion with the absolute mean intraoperative value of 1.38° ± 1.67° (range: 0° to 13.6°). Absolute mean cyclotorsion showed no significant correlation with age (r = 0.14, P = .37). Female patients had significantly higher degrees of cyclotorsion versus males (P < .001). Right and left eyes showed no significant difference in absolute mean torsion (P = .05). Higher diopters of refractive errors, hyperopia, more than 2.00 diopters of cylinder, high pulse numbers (r = 0.26), and use of the advanced personalized treatment ablation algorithm were all significantly related to higher degrees of torsion (P < .0001). Ablation depth (r = 0.13) and surgeon appeared to be dependent factors. CONCLUSIONS Incidence of intraoperative cyclotorsion is high in eyes undergoing PRK and most of them will experience some degree of torsion. Several diverse factors (sex, refractive error diopters, hyperopia, high cylinder, pulse numbers, and ablation algorithm) were significant predictors for higher degrees of the observed torsion. [J Refract Surg. 2018;34(2):106-112.].
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17
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Eshraghi B, Dehghani S, Saeedi-Anari G. A rare erosive orbital mass in a child: Case report of myofibroma. J Curr Ophthalmol 2017; 29:224-227. [PMID: 28913516 PMCID: PMC5587252 DOI: 10.1016/j.joco.2017.04.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 01/07/2017] [Revised: 03/16/2017] [Accepted: 04/08/2017] [Indexed: 11/21/2022] Open
Abstract
PURPOSE To present the clinical, histological, and radiographic findings of a case of orbital myofibroma in an unusual location. The literature is reviewed and the clinical relevance discussed. METHODS A 5-year-old boy was examined with a 1.5-month history of progressive swelling in the left supraorbital region. RESULTS Examination revealed a firm, painless mass in the supralateral region of the left orbit with slight reddish discoloration of the overlying skin. Computerized tomography (CT) scan images showed a well demarcated, homogenous, solid mass with extension to the lacrimal gland region and adjacent to frontal bone erosion. The mass was surgically excised and was confirmed to be myofibroma in diagnostic histological studies. There has been no evidence of recurrence in the first year after surgery. CONCLUSIONS Clinical appearance and imaging findings are unspecific for this tumor, and histological examination still remains the definite method of diagnosis. Therefore, it is important to be able to differentiate myofibromas from other malignant tumors with a similar presentation in pediatric patients to avoid mismanagement.
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Affiliation(s)
| | - Shima Dehghani
- Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
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18
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Etezadi F, Najafi Abrandabadi AH, Motaharinia J, Mojtahedzadeh M, Pourfakhr P, Khajavi MR, Gooran S, Shariat Moharari R, Dehghani S. The Effect of Osmotherapy and Tight Control of Acidosis on Early Graft Function among Deceased-Donor Kidney Transplant Recipients: A Randomized Controlled Trial. Int J Organ Transplant Med 2017; 8:8-16. [PMID: 28299023 PMCID: PMC5347401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND Reperfusion injury and the acid-base status of the transplant are important factors affecting post-transplantation graft function. OBJECTIVE We hypothesized that infusing hypertonic saline (HS) or tight control of acid-base status of the blood rushing through renal graft using sodium bicarbonate may have beneficial effects on early graft function. METHODS Candidates for deceased-donor kidney transplant were randomized into three groups. HS group (n=33) received 50 mL/kg normal saline (NS) titrated during operation plus 4 mL/kg of 5% HS just within graft reperfusion phase; bicarbonate group (n=37) was administered 60 mL/kg NS while their metabolic acidosis (base excess ≤5 mEq/L) was tightly corrected every 30 min with sodium bicarbonate; and a control group (n=36) that received 60 mL/kg normal saline while they were administered sodium bicarbonate only, if they encountered severe metabolic acidosis (base excess ≤15 mEq/L). The primary outcome was defined as early post-operative renal function evaluated based on serial serum creatinine levels. The study was registered in Iranian Registry of Clinical Trials (IRCT2013122815841N19). RESULTS Post-operative early graft function improved significantly during the first 3 days in the intervention groups (p<0.05). However, that beneficial effect no longer remained at the same level after the day four. CONCLUSION Timely administration of HS or tight control of metabolic acidosis with sodium bicarbonate infusion improve early renal function during renal transplant surgery.
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Affiliation(s)
- F. Etezadi
- Department of Anesthesiology and Critical Care, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - A. H. Najafi Abrandabadi
- Department of Anesthesiology and Critical Care, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - J. Motaharinia
- Department of Pharmacotherapy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran,Correspondence: Dr. Javad Motaharinia, Department of Pharmacotherapy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran, Tel: +98-919-995-2505, Fax: +98-21-2204-8483, E-mail:
| | - M. Mojtahedzadeh
- Department of Anesthesiology and Critical Care, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran ,Department of Pharmacotherapy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - P. Pourfakhr
- Department of Anesthesiology and Critical Care, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - M. R. Khajavi
- Department of Anesthesiology and Critical Care, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - S. Gooran
- Urology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - R. Shariat Moharari
- Department of Anesthesiology and Critical Care, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - S. Dehghani
- Urology Research Center, Tehran University of Medical Sciences, Tehran, Iran
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19
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Toukhsati SR, Jovanovic A, Dehghani S, Tran T, Tran A, Hare DL. Low psychological resilience is associated with depression in patients with cardiovascular disease. Eur J Cardiovasc Nurs 2016; 16:64-69. [PMID: 26984970 DOI: 10.1177/1474515116640412] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Psychological resilience is associated with an improved capacity to cope with chronic health challenges such as cardiovascular disease. AIMS The aim of this cross-sectional study was to examine the relationship between psychological resilience and symptoms of depression in a non-acute cardiac outpatient population. METHODS A total of 419 adult cardiac outpatients (288 men; mean±SD age 66.26±14.04 years) attending cardiovascular clinics completed the Sense of Coherence (SOC13) scale as a measure of psychological resilience and the Cardiac Depression Scale (CDS26) prior to their consultation. RESULTS The total SOC13 score (mean±SD 64.02±14.24, range 19-91) was within the moderate range. Older patients (⩾65 years) were significantly more resilient than those aged <65 ( p<0.01). Psychological resilience (SOC13) was negatively correlated with depression (CDS26) ( r=-0.79; p<0.001) and inversely associated with affective, cognitive and somatic symptoms of depression. Psychological resilience, particularly meaningfulness, accounted for more of the variance in affective features of depression than for somatic features. CONCLUSION These findings show that low psychological resilience was related to depression in this cohort of cardiac outpatients, particularly affective symptoms such as anhedonia and hopelessness. The SOC13 scale offers a complementary measure of psychological status that could be used to monitor, and possibly predict, patient coping and response to treatment throughout the cardiovascular disease trajectory.
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Affiliation(s)
- S R Toukhsati
- 1 Department of Cardiology, Austin Health, Australia.,2 University of Melbourne, Australia
| | - A Jovanovic
- 1 Department of Cardiology, Austin Health, Australia
| | - S Dehghani
- 1 Department of Cardiology, Austin Health, Australia
| | - T Tran
- 1 Department of Cardiology, Austin Health, Australia
| | - A Tran
- 1 Department of Cardiology, Austin Health, Australia
| | - D L Hare
- 1 Department of Cardiology, Austin Health, Australia.,2 University of Melbourne, Australia
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20
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Mohammadi V, Khalili M, Eghtesadi S, Dehghani S, Jazayeri S, Aghababaee SK, Sabour H, Saberi H, Eghtesadi M, Gohari MR. The effect of alpha-lipoic acid (ALA) supplementation on cardiovascular risk factors in men with chronic spinal cord injury: a clinical trial. Spinal Cord 2015; 53:621-4. [PMID: 25753493 DOI: 10.1038/sc.2015.35] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 01/28/2015] [Accepted: 01/29/2015] [Indexed: 02/05/2023]
Abstract
STUDY DESIGN A randomized, double-blind, placebo-controlled clinical trial. OBJECTIVE To assess the effect of alpha-lipoic acid (ALA) supplementation on IL-6, hs-CRP, FBS, anthropometric indices, food intake and blood pressure in male patients with chronic spinal cord injury (SCI). SETTING Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran. METHODS Fifty-eight men with chronic SCI participated in the study. Participants were divided in two groups: one group received 600 mg of supplemental ALA (n=28) and the other group received placebo (n=30) for 12 weeks. At the beginning and end of the study, biochemical parameters, anthropometric indices, blood pressure and dietary intakes were measured. Dietary intake was measured using N4 software, and statistical analyses were carried out using SPSS16. RESULTS No significant reduction was found in IL-6 (P=0.97) and hs-CRP levels (P=0.23). There was significant reduction in fasting blood sugar (P=0.001), body weight (P=0.001), BMI (P=0.001), waist circumference (P=0.001) and blood pressure (P=0.001). Dietary intake was significantly reduced, including fat (P=0.001), carbohydrate (P=0.001), protein (P=0.002) and energy intakes (P=0.001). CONCLUSION Lipoic acid supplementation had no significant effect on the measured inflammatory markers but it reduces fasting blood sugar, anthropometric parameters, food intake and blood pressure in men with chronic SCI.
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Affiliation(s)
- V Mohammadi
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - M Khalili
- Neurosciences Research Center, Tabriz University of Medical Science, Tabriz, Iran
| | - S Eghtesadi
- Department of Clinical Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - S Dehghani
- Drug and Poison Information Center, Research and Development Office, Jundishapour University of Medical Sciences, Ahwaz, Iran
| | - S Jazayeri
- Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - S K Aghababaee
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - H Sabour
- Brain and Spinal Injury Repair Research Center, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - H Saberi
- Brain and Spinal Injury Repair Research Center, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - M Eghtesadi
- School of Medicine, Azad University, Tehran, Iran
| | - M R Gohari
- Department of Biostatistics, School of Health Management and Information Sciences, Iran University of Medical Sciences, Tehran, Iran
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21
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Davari HR, Rahim MB, Alavi SAA, Mardani P, Ershadi R, Tavakoli AA, Dehghani S. Sternochondral allograft for chest wall reconstruction. J Cardiothorac Surg 2013. [PMCID: PMC3844789 DOI: 10.1186/1749-8090-8-s1-o236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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22
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Mehrsai AR, Namdari F, Salavati A, Dehghani S, Allameh F, Pourmand G. Comparison of transdermal electromotive administration of verapamil and dexamethasone versus intra-lesional injection for Peyronie's disease. Andrology 2012; 1:129-32. [DOI: 10.1111/j.2047-2927.2012.00018.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 08/15/2012] [Accepted: 08/20/2012] [Indexed: 11/28/2022]
Affiliation(s)
- A. R. Mehrsai
- Urology Research Center; Tehran University of Medical Sciences; Tehran; Iran
| | - F. Namdari
- Urology Research Center; Tehran University of Medical Sciences; Tehran; Iran
| | - A. Salavati
- Urology Research Center; Tehran University of Medical Sciences; Tehran; Iran
| | - S. Dehghani
- Urology Research Center; Tehran University of Medical Sciences; Tehran; Iran
| | - F. Allameh
- Urology Research Center; Tehran University of Medical Sciences; Tehran; Iran
| | - G. Pourmand
- Urology Research Center; Tehran University of Medical Sciences; Tehran; Iran
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23
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Pourmand G, Ramezani R, Sabahgoulian B, Nadali F, Mehrsai AR, Nikoobakht MR, Allameh F, Hossieni SH, Seraji A, Rezai M, Haidari F, Dehghani S, Razmandeh R, Pourmand B. Preventing Unnecessary Invasive Cancer-Diagnostic Tests: Changing the Cut-off Points. Iran J Public Health 2012; 41:47-52. [PMID: 23113134 PMCID: PMC3481674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2011] [Accepted: 12/12/2011] [Indexed: 12/02/2022]
Abstract
BACKGROUND To determine a cut-off point of tPSA and PSAD to prevent unnecessary invasive cancer-diagnosing tests in the community. METHODS This study was performed on 688 consecutive patients referred to our center due to prostatism, suspicious lesions on digital rectal examination and/or elevated serum PSA levels. All patients underwent transrectal ultrasound guided biopsies and obtained PSAD. Serum levels of tPSA and fPSA were measured by chemiluminescence. Comparisons were done using tests of accuracy (AUC-ROC). RESULTS Prostate cancer was detected in 334 patients, whereas the other 354 patients were suffering from benign prostate diseases. The mean tPSA in case and control groups were 28.32±63.62 ng/ml and 7.14±10.04 ng/ml; the mean f/tPSA ratios were 0.13± 0.21 and 0.26±0.24 in PCa and benign prostate disease groups; the mean PSAD rates were 0.69±2.24, 0.12±0.11, respectively. Statistically significant differences were found (P <0.05). Using ROC curve analysis, it was revealed that AUC was 0.78 for tPSA and 0.80 for f/tPSA. Sensitivity was 71% for the cut-off value of 7.85ng/ml. For f/tPSA ratio, the optimal cut-off value was 0.13 which produced the sensitivity of 81.4% and for PSAD, it was15%. CONCLUSIONS As this trial is different from the European and American values, we should be more cautious in dealing with the prostate cancer upon the obtained sensitivity and specificity for PCa diagnosis (7.85ng/mL for tPSA, 15% for PSAD and 0.13 for f/tPSA ratio).
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Affiliation(s)
- G Pourmand
- Urology Research Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran,Corresponding Author: Fax: +9821 6634 8561, E-mail address:
| | - R Ramezani
- CDC Cancer Office, Ministry of Health and Medical Education, Tehran, Iran
| | | | - F Nadali
- Dept. of Hematology, Allied Health Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - AR Mehrsai
- Urology Research Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - MR Nikoobakht
- Urology Research Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - F Allameh
- Urology Research Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - SH Hossieni
- Urology Research Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - A Seraji
- Urology Research Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - M Rezai
- Bistoon Ultrasound Clinic, Tehran, Iran
| | - F Haidari
- Urology Research Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - S Dehghani
- Urology Research Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - R Razmandeh
- Urology Research Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - B Pourmand
- Research Development Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
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Pourmand GR, Dehghani S, Saraji A, Khaki S, Mortazavi SH, Mehrsai A, Sajadi H. Relationship between Post-kidney Transplantation Antithymocyte Globulin Therapy and Wound Healing Complications. Int J Organ Transplant Med 2012; 3:79-84. [PMID: 25013627 PMCID: PMC4089281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Wound healing disorders are probably the most common post-transplantation surgical complications. It is thought that wound healing disturbance occurs due to antiproliferative effects of immunosuppressive drugs. On the other hand, success of transplantation is dependent on immunosuppressive therapies. Antihuman thymocyte globulin (ATG) has been widely used as induction therapy but the impact of this treatment on wound healing is not fully understood. OBJECTIVE To investigate wound healing complications after ATG therapy in renal transplant recipients. METHODS The medical records of 333 kidney transplant recipients were assessed for wound healing disorders. Among these patients, 92 received ATG and 5 doses of 1.5 mg/kg ATG along with the standard protocol of drugs. RESULTS The mean age of patients was 38.9 years. Of 333 recipients, 92 (23.7%) received ATG; 21 (6.3%) developed wound healing complications. There was a significant relationship between ATG therapy and wound complications (p=0.034). Also, women were more likely to develop wound healing disorders than men (p=0.002). No statistical difference was observed between age and wound healing complication (p=0.28). There was no significant difference between the mean duration of hospitalization between ATG and Non-ATG group (p=0.9). CONCLUSION ATG increases the risk of overall wound complications. It is needed to pay more attention to the patients treated with this immunosuppressant to avoid the risk of re-interventions, lessen the duration of hospitalization and decrease the impairment of graft function.
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Affiliation(s)
- G. R. Pourmand
- Urology Research Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - S. Dehghani
- Urology Research Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran,Correspondence: Sanaz Dehghani, Urology Research Center, Sina Hospital, Hasan Abad Sq, Imam Khomeini St, Tehran, Iran
Tel/Fax: +98-21-6670-1041
E-mail:
| | - A. Saraji
- Urology Research Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - S. Khaki
- Urology Research Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran,Students’ Scientific Research Center, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - S. H. Mortazavi
- Urology Research Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran,Students’ Scientific Research Center, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - A. Mehrsai
- Urology Research Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - H. Sajadi
- Urology Research Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
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Pourmand G, Saraji A, Sajadi H, Mehrsai A, Nikoobakht M, Razeghi E, Rahbar M, Dehghani S. UP-03.033 Is Anti-thymocyte Globulin Therapy Considered a Risk Factor for Post Kidney Transplantation Cytomegalovirus Infection? Urology 2011. [DOI: 10.1016/j.urology.2011.07.1123] [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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Pourmand G, Saraji A, Dehghani S, Mehrsai A, Nikoobakht M, Sajadi H, Hadadi A, Razeghi E, Rahbar M, Hosseini H, Rezaeidanesh M. UP-03.034 Is There a Relation Between Post Kidney Transplantation Antithymocyte Globulin Therapy and Wound Healing Disturbance? Urology 2011. [DOI: 10.1016/j.urology.2011.07.1124] [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: 10/15/2022]
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Toghraie FS, Chenari N, Gholipour MA, Faghih Z, Torabinejad S, Dehghani S, Ghaderi A. Treatment of osteoarthritis with infrapatellar fat pad derived mesenchymal stem cells in Rabbit. Knee 2011; 18:71-5. [PMID: 20591677 DOI: 10.1016/j.knee.2010.03.001] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2010] [Revised: 02/20/2010] [Accepted: 03/07/2010] [Indexed: 02/02/2023]
Abstract
Osteoarthritis (OA) is a progressively debilitating disease that affects mostly cartilage, with associated changes in the bone. Increasing incidence of OA and the aging population coupled with insufficient therapeutic choices has led to focus on the potential of stem cells as a novel strategy for cartilage repair. In this study, we used scaffold free mesenchymal stem cells obtained from infrapatellar fat pad in an experimental animal model of OA by direct intraarticular injection. Mesenchymal stem cells isolated from a 2.8kg White New Zealand rabbit. The cells were expanded and grown in vitro. OA was induced by unilaterally anterior cruciate ligament transection of knee joints. Twelve weeks after operation, a single dose of 1 million cells suspended in 1ml of medium was delivered to the injured knee by direct intraarticular injection. Control group received 1ml of medium without cells. The knees were examined after sixteen and twenty weeks from the surgery. Repairing was investigated radiologically, grossly and histologically using haematoxylin and eosin, Safranin-O and toluidine blue staining. Radiological assessment confirmed development of OA changes after 12 weeks. Rabbits receiving mesenchymal stem cells showed lower degree of cartilage degeneration, osteophyte formation, and Subchondral sclerosis than control group at 20 week after surgery. The quality of cartilage was significantly better in cell-treated group compared with control group after 20 weeks. In conclusion, infrapatellar fat pad derived mesenchymal stem cells could be the promising cell sources for the treatment of OA.
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Affiliation(s)
- F S Toghraie
- Faculty of Vet Medicine, Shiraz University, Iran
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Yaghobi R, Ramzi M, Dehghani S. The Role of Different Risk Factors in Clinical Presentation of Hemorrhagic Cystitis in Hematopoietic Stem Cell Transplant Recipients. Transplant Proc 2009; 41:2900-2. [PMID: 19765468 DOI: 10.1016/j.transproceed.2009.07.060] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Nazifi S, Dehghani S, Barzegar MR. Evaluation of cellular and biochemical parameters of blood and peritoneal fluid following enterectomy in the goat. Small Rumin Res 2000; 37:65-71. [PMID: 10818305 DOI: 10.1016/s0921-4488(99)00150-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To evaluate the effects of enterectomy on cellular and biochemical parameters of blood and peritoneal fluid, an experiment was conducted using 10 Iranian crossbred male goats. Ten milliliter of blood and 1-1.5ml of peritoneal fluid were sampled from all animals prior to operation for the estimation of control values. Enterectomy was performed under local anesthesia. Blood and peritoneal fluid samples were collected at 24, 48, 72 and 96h after enterectomy. The results revealed that after enterectomy, the number of WBCs, neutrophils, monocytes and band neutrophils in the blood significantly increased (p<0.05). However, the percent of lymphocytes decreased significantly (p<0.05). The concentrations of glucose and blood urea nitrogen (BUN) significantly increased (p<0.05). Furthermore, following the operation, the number of WBCs and the percent of neutrophils and band neutrophils in the peritoneal fluid significantly increased (p<0.05). In contrast, the percent of lymphocytes and monocytes in the peritoneal fluid decreased significantly (p<0.05). The concentrations of protein and the activities of amylase and alkaline phosphatase (ALP) in the peritoneal fluid increased significantly (p<0.05). However, the concentration of glucose decreased significantly (p<0.05). This study showed that enterectomy can have profound effects on blood and peritoneal fluid parameters.
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Affiliation(s)
- S Nazifi
- Department of Clinical Studies, School of Veterinary Medicine, Shiraz University, P.O. Box 1731, 71345, Shiraz, Iran
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Dehghani S, Nazifi S, Barzegar MR. Evaluation of cellular and biochemical parameters of blood and peritoneal fluid following exploratory laparotomy in the goat. J Vet Med A Physiol Pathol Clin Med 2000; 47:143-8. [PMID: 10842463 DOI: 10.1046/j.1439-0442.2000.00269.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
To evaluate the effects of exploratory laparotomy on cellular and biochemical parameters of blood and peritoneal fluid, an experiment was conducted using 10 Iranian cross-bred male goats. Approximately 10 ml of blood and 1-1.5 ml of peritoneal fluid were collected from all animals prior to operation for estimation of control values. Exploratory laparotomy was performed under local analgesia. Blood and peritoneal fluid samples were collected at 24, 48, 72 and 96 h after exploratory laparotomy. The results revealed that after exploratory laparotomy, the number of white blood cells and the percentage and absolute number of neutrophils and band neutrophils significantly increased (P < 0.05). However, the percentage of lymphocytes decreased significantly (P < 0.05). The concentrations of blood urea nitrogen significantly increased (P < 0.05). Furthermore, following the operation, the percentage and absolute number of neutrophils in the peritoneal fluid significantly increased (P < 0.05). In contrast, the percentage of lymphocytes in the peritoneal fluid decreased significantly (P < 0.05). The concentration of protein in the peritoneal fluid increased significantly (P < 0.05).
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Affiliation(s)
- S Dehghani
- Department of Clinical Studies, School of Veterinary Medicine, Shiraz University, Iran
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Vesal N, Sajedianfard J, Dehghani S. Epidural Xylazine Hydrochloride as an Analgesic and Sedative for Teat Surgery in Cows. Journal of Applied Animal Research 1998. [DOI: 10.1080/09712119.1998.9706697] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Dehghani S, Sharifnia N, Yahyaei M, Souri A. CLINICAL, HAEMATOLOGICAL AND BIOCHEMICAL EFFECTS OF XYLAZINE, KETAMINE AND THEIR COMBINATION IN CAPRINE AND FELINE. ACTA ACUST UNITED AC 1991. [DOI: 10.1111/j.1467-2995.1991.tb00529.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ferguson JG, Dehghani S, Petrali EH. Fractures of the femur in newborn calves. Can Vet J 1990; 31:289-91. [PMID: 17423560 PMCID: PMC1480690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
A retrospective study of femoral fractures in 77 calves revealed that most occurred in the femoral shaft or in the proximal physis, with thin cortices and periosteal stripping significant problems in fractures of the femoral shaft. Most cases were related to forced extraction, with more left femurs being affected than right. The existence of concurrent disease reduced the success rate by 50% and, when significant additional trauma was present, no calves survived. When all cases were considered regardless of condition, the "longterm" success rate was 43%.
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Dehghani S, Townsend HG. Cecal torsion in a six month old holstein-friesian steer. Can Vet J 1982; 23:217-8. [PMID: 17422161 PMCID: PMC1790058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The clinical examination of a six month old Holstein-Friesian steer with a history of bloat and anorexia revealed a distended viscus in the right flank. At surgery, the distended viscus was found to be the cecum which was about 1.37 m (4.5 feet) long and more than 30 cm (one foot) in diameter. A counter-clockwise torsion of about 360 degrees (viewing from the right flank) involving the proximal portion of spiral colon was detected. A cecatomy was performed and a large quantity of rapeseed was removed. The torsion was reduced and the animal appeared to make an uneventful recovery but died suddenly six weeks later.
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