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Rehan S, McPherson R. Comparing the current knowledge & understanding of vitreo-retinal conditions & associated practice: optometrists versus year one specialty ophthalmic trainees in the UK. Eye (Lond) 2024; 38:1235-1237. [PMID: 38151527 PMCID: PMC11076278 DOI: 10.1038/s41433-023-02909-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/06/2023] [Accepted: 12/15/2023] [Indexed: 12/29/2023] Open
Affiliation(s)
- S Rehan
- Specialty Registrar, Royal Gwent Hospital, Cardiff Road, Newport, Wales, NP20 2UB, UK.
| | - R McPherson
- Consultant Ophthalmic Surgeon, University Hospital of Wales, Cardiff, Wales, CF14 4XW, UK
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Pratt L, Rehan S, West J, Watts P. 4 Peripapillary hyperreflective ovoid mass-like structures (PHOMS) in children: optical coherence tomography measurements and refractive status. BMJ Open Ophthalmol 2023; 8:A2. [PMID: 37797983 DOI: 10.1136/bmjophth-2023-biposa.4] [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] [Indexed: 10/07/2023] Open
Abstract
Peripapillary hyperreflective ovoid mass-like structures (PHOMS) are a recently described entity. They are a common and non-specific cause of pseudopapilloedema. We aim to determine if there is a relationship between optical coherence tomography (OCT) measurements and refractive status on the presence of PHOMS.Retrospective analysis of optic nerve head OCT scans from children seen in the suspected papilledema virtual clinic between August 2016 and March 2021 at University Hospital of Wales, Cardiff. Three assessors graded each scan for the presence of PHOMS. Numerical data on the disc morphology (disc area (DA (mm2)) and scleral canal diameter (SCD (µm)) was obtained from the OCT scans. Refractive data was obtained from the initial optometric referral where available. Logistic regression analysis was performed to assess the effect of age, sex, spherical equivalent, DA and SCD on the likelihood of the presence of PHOMS.The SCD was significantly larger in eyes with PHOMS (mean diameter 1771 µm) vs no PHOMS (mean diameter 1621 µm). Odds ratio 1.0042 (1.0016 to 1.0069). The other variables were not significantly associated, but there was a tendency towards a younger age, larger disc area and the presence of a refractive error if PHOMS were present.Anatomical and developmental differences in the size of the scleral canal and optic nerve may explain the presence of PHOMS in children. In contrast to other recently published studies, we show that a wider scleral canal diameter was significantly associated with the presence of PHOMS.
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Affiliation(s)
- L Pratt
- University Hospital of Wales, Cardiff, UK
| | - S Rehan
- University Hospital of Wales, Cardiff, UK
| | - J West
- University Hospital of Wales, Cardiff, UK
| | - P Watts
- University Hospital of Wales, Cardiff, UK
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Ahmed S, Qureshi AS, Usman M, Rehan S, Deeba F, Ateeq MK, Younus M, Naeem MA, Umar Z, Taseer MSA. Seasonal changes in the scrotal skin histology in relation to thermoregulation and testosterone level in camel and buffalo bull. Anat Histol Embryol 2023; 52:752-761. [PMID: 37254452 DOI: 10.1111/ahe.12933] [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: 02/25/2023] [Revised: 05/08/2023] [Accepted: 05/10/2023] [Indexed: 06/01/2023]
Abstract
This study was conducted to compare the scrotal skin dynamics of camel and buffalo bulls regarding thermoregulation, season and testosterone. Scrotal skin and blood samples (n = 8 each) were collected during breeding (October to March) and non-breeding seasons (April to August). Tissue slides were prepared by the paraffin embedding technique followed by hematoxylin and eosin (H&E) staining and were analysed by ImageJ®. Relative humidity and temperature were recorded in different seasons to calculate the thermal humidity index (THI). Serum testosterone level was estimated through radioimmunoassay (RIA). The data were analysed by applying ANOVA, the THS test was used as a post-ANOVA interface and the correlation coefficient was also calculated among season, testosterone and skin parameters. The results showed that skin thickness, season and THI were negatively correlated with testosterone levels. In the neck, body and apex, the papillary layer was thicker in buffalo bull compared to camel bull during the breeding season; however, the reticular layer followed a reverse trend in the apex when THI was low. In the scrotal neck during the non-breeding season, hair follicle (HF) length and density were recorded high in camel bull compared to buffalo bull when THI was elevated. The density of HF followed the otherwise trend in the apex during the breeding season. The density of SG was found highest in all regions of camel bull as compared to buffalo bull and showed direct relation with THI. To conclude, this study delineates how the histo-dynamics of scrotal skin varies and accommodate itself with testosterone and THI over the different season in camel and buffalo.
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Affiliation(s)
- Shakil Ahmed
- Department of Anatomy, Faculty of Veterinary Science, University of Agriculture, Faisalabad, Pakistan
| | - Anas Sarwar Qureshi
- Department of Anatomy, Faculty of Veterinary Science, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Usman
- Department of Basic Sciences (Histology), University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Sarmad Rehan
- Department of Anatomy, Faculty of Veterinary Science, University of Agriculture, Faisalabad, Pakistan
| | - Farrah Deeba
- Department of Clinical Medicine and Surgery, Faculty of Veterinary Science, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Khalil Ateeq
- Department of Basic Sciences (Histology), University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Muhammad Younus
- Department of Pathobiology (Pathology), University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Muhammad Ahsan Naeem
- Department of Basic Sciences (Pharmacology), University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Zaima Umar
- Department of Anatomy, The University of Faisalabad-Health Sciences Wing, Faisalabad, Pakistan
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Moreno M, Srihari S, Ruiz F, Ambalathingal Thomas G, Le Texier L, Panikkar A, Raju J, Rehan S, Beagley L, Solomon M, Smith C, Dubovsky J, Khanna R, Aftab B. Comprehensive profiling of ATA188, an off-the-shelf, allogeneic epstein-barr virus-specific T-cell immunotherapy for progressive multiple sclerosis. Cytotherapy 2021. [DOI: 10.1016/s1465324921004291] [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: 10/21/2022]
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Giroud N, Pichora-Fuller MK, Mick P, Wittich W, Al-Yawer F, Rehan S, Orange JB, Phillips NA. Hearing loss is associated with gray matter differences in older adults at risk for and with Alzheimer's disease. Aging Brain 2021; 1:100018. [PMID: 36911511 PMCID: PMC9997162 DOI: 10.1016/j.nbas.2021.100018] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 05/06/2021] [Accepted: 05/19/2021] [Indexed: 12/27/2022] Open
Abstract
Using data from the COMPASS-ND study we investigated associations between hearing loss and hippocampal volume as well as cortical thickness in older adults with subjective cognitive decline (SCD), mild cognitive impairment (MCI), and Alzheimer's dementia (AD). SCD participants with greater pure-tone hearing loss exhibited lower hippocampal volume, but more cortical thickness in the left superior temporal gyrus and right pars opercularis. Greater speech-in-noise reception thresholds were associated with lower cortical thickness bilaterally across much of the cortex in AD. The AD group also showed a trend towards worse speech-in-noise thresholds compared to the SCD group.
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Affiliation(s)
- N Giroud
- Department of Psychology, Centre for Research in Human Development, Concordia University, Montréal, Québec, Canada.,Centre for Research on Brain, Language, and Music, Montréal, Québec, Canada
| | - M K Pichora-Fuller
- Department of Psychology, University of Toronto, Mississauga, Ontario, Canada
| | - P Mick
- Department of Surgery, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - W Wittich
- School of Optometry, Université de Montréal, Montreal, Quebec, Canada
| | - F Al-Yawer
- Department of Psychology, Centre for Research in Human Development, Concordia University, Montréal, Québec, Canada
| | - S Rehan
- Department of Psychology, Centre for Research in Human Development, Concordia University, Montréal, Québec, Canada
| | - J B Orange
- School of Communication Sciences and Disorders, Western University, London, Canada
| | - N A Phillips
- Department of Psychology, Centre for Research in Human Development, Concordia University, Montréal, Québec, Canada.,Centre for Research on Brain, Language, and Music, Montréal, Québec, Canada.,Lady Davis Institute for Medical Research, Jewish General Hospital, Montréal, Québec, Canada
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Usman M, Qureshi AS, Rehan S, Sarfraz A, Hayat K. Histomorphometric evaluation of dromedarian (Camelus dromedarius) heart. J CAMEL PRACT RES 2018. [DOI: 10.5958/2277-8934.2018.00030.9] [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: 10/27/2022]
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Abstract
Subretinal fibrosis and uveitis syndrome is a rare, potentially devastating, posterior uveitis of unknown aetiology, characterised bilaterally by initial multifocal choroiditis with later progressive subretinal fibrosis. We report a rare case of unilateral subretinal fibrosis and uveitis syndrome. To date, there are only two case reports of unilateral disease. Our patient presented with unilateral blur and was found to have reduced visual acuity. A Bartonella profile was positive and a diagnosis of Bartonella posterior uveitis was made. Several positive ocular findings in the anterior chamber and on fundoscopy consistent with the syndrome were found. When steroid therapy alone could no longer control active inflammation, the immunosuppressive agent mycophenolate was added. Over time subretinal fibrosis became established sparing the macula and associated complications occurred, but with mycophenolate, at four years, our patient’s visual acuity had improved and remains stable. Moreover, four years after her initial presentation, her condition remains strictly unilateral.
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Affiliation(s)
- S Rehan
- Fourth Year Medical Student, Cardiff University, UK
| | - Z Javaid
- Fourth Year Medical Student, Cardiff University, UK
| | - A Al-Bermani
- Consultant Medical Ophthalmologist and Honorary Lecturer, Cardiff Eye Unit, University Hospital of Wales, UK
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Hussain R, Khan A, Mahmood F, Rehan S, Ali F. Clinico-hematological and tissue changes induced by butachlor in male Japanese quail (Coturnix japonica). Pestic Biochem Physiol 2014; 109:58-63. [PMID: 24581384 DOI: 10.1016/j.pestbp.2014.01.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 01/08/2014] [Accepted: 01/08/2014] [Indexed: 06/03/2023]
Abstract
The present experiment was executed to determine the pathological effects induced by concurrent feeding of butachlor (chloroacetanilide herbicide) in male Japanese quail. For this purpose mature male quail about 4-5weeks of age were procured from the local market and randomly divided into six equal groups (A-F). Butachlor was mixed in corn oil and administered orally for 30days using crop tube. Four birds from each group were killed at day 10, 20 and 30 of the experiment and blood was collected with and without anticoagulant. The birds in groups (A-D) did not reveal any clinical and behavioral alterations. Clinical signs like watery droppings, dullness, ruffled feather, depression, decrease frequency of crowing, mounting with pen mates and foam production were observed. Maximum intensity of these clinical signs and behavioral alterations were observed in group F throughout the experiment. Significant lower values of erythrocytes, hematocrit percent and hemoglobin were recorded. Significantly increased numbers of erythrocytes with micronuclei, lobed and notched nuclei were observed. Histopathologically, enlarged intertubular space, fewer numbers of round spermatids, necrotic spermatids and admixture of dead spermatids were observed in testes. The results revealed significant increase in serum lactate dehydrogenase (LDH), aspartate transaminase (AST), alanine transaminase (ALT) and urea concentrations. The results of present experimental study indicated that butachlor induces hematobiochemical and testicular changes in birds.
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Affiliation(s)
- Riaz Hussain
- University College of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur 63000, Pakistan.
| | - Ahrar Khan
- Department of Pathology, Faculty of Veterinary Science, University of Agriculture, Faisalabad 38040, Pakistan.
| | - Fazal Mahmood
- Department of Pathology, Faculty of Veterinary Science, University of Agriculture, Faisalabad 38040, Pakistan
| | - Sarmad Rehan
- Department of Anatomy, Faculty of Veterinary Science, University of Agriculture, Faisalabad 38040, Pakistan
| | - Farah Ali
- University College of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur 63000, Pakistan
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Abstract
A series of three cases of 'hypocalcemic dysfunction' that reflects a range of clinical profiles from a purely calcium responsive peripheral collapse to paroxysmal nocturnal dyspnea and orthopnea is reported. The underlying diversity of clinical presentation is noteworthy, as is its prompt response to calcium therapy.
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Affiliation(s)
- A Gurtoo
- Department of Medicine, Maulana Azad Medical College, New Delhi, India
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Zaidi S, Rehan S, Zaidi A, Shakir M, Aslam M, Siddiqi Z. Synthesis, vibrational spectra and stereochemistry of lanthanide tris(chlorosulphates), Ln(SO3Cl)3 (Ln = La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho and Er). Polyhedron 1985. [DOI: 10.1016/s0277-5387(00)86993-4] [Citation(s) in RCA: 9] [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: 11/16/2022]
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