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Stål P, Nord H, von Hofsten J, Holmlund T, Shah F. Desmin gene expression is not ubiquitous in all upper airway myofibers and the pattern differs between healthy and sleep apnea subjects. Eur J Med Res 2024; 29:216. [PMID: 38566246 PMCID: PMC10988944 DOI: 10.1186/s40001-024-01812-9] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 03/22/2024] [Indexed: 04/04/2024] Open
Abstract
BACKGROUND Desmin is a major cytoskeletal protein considered ubiquitous in mature muscle fibers. However, we earlier reported that a subgroup of muscle fibers in the soft palate of healthy subjects and obstructive sleep apnea patients (OSA) lacked immunoexpression for desmin. This raised the question of whether these fibers also lack messenger ribonucleic acid (mRNA) for desmin and can be considered a novel fiber phenotype. Moreover, some fibers in the OSA patients had an abnormal distribution and aggregates of desmin. Thus, the aim of the study was to investigate if these desmin protein abnormalities are also reflected in the expression of desmin mRNA in an upper airway muscle of healthy subjects and OSA patients. METHODS Muscle biopsies from the musculus uvulae in the soft palate were obtained from ten healthy male subjects and six male patients with OSA. Overnight sleep apnea registrations were done for all participants. Immunohistochemistry, in-situ hybridization, and reverse transcription-quantitative polymerase chain reaction (RT-qPCR) techniques were used to evaluate the presence of desmin protein and its mRNA. RESULTS Our findings demonstrated that a group of muscle fibers lacked expression for desmin mRNA and desmin protein in healthy individuals and OSA patients (12.0 ± 5.6% vs. 23.1 ± 10.8%, p = 0.03). A subpopulation of these fibers displayed a weak subsarcolemmal rim of desmin accompanied by a few scattered mRNA dots in the cytoplasm. The muscles of OSA patients also differed from healthy subjects by exhibiting muscle fibers with reorganized or accumulated aggregates of desmin protein (14.5 ± 6.5%). In these abnormal fibers, the density of mRNA was generally low or concentrated in specific regions. The overall quantification of desmin mRNA by RT-qPCR was significantly upregulated in OSA patients compared to healthy subjects (p = 0.01). CONCLUSIONS Our study shows evidence that muscle fibers in the human soft palate lack both mRNA and protein for desmin. This indicates a novel cytoskeletal structure and challenges the ubiquity of desmin in muscle fibers. Moreover, the observation of reorganized or accumulated aggregates of desmin mRNA and desmin protein in OSA patients suggests a disturbance in the transcription and translation process in the fibers of the patients.
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Affiliation(s)
- Per Stål
- Department of Medical and Translational Biology, Umeå University, SE-901 87, Umeå, Sweden
| | - Hanna Nord
- Department of Medical and Translational Biology, Umeå University, SE-901 87, Umeå, Sweden
| | - Jonas von Hofsten
- Department of Medical and Translational Biology, Umeå University, SE-901 87, Umeå, Sweden
| | - Thorbjörn Holmlund
- Department of Clinical Sciences, Otorhinolaryngology, Umeå University, SE-901 87, Umeå, Sweden
| | - Farhan Shah
- Department of Medical and Translational Biology, Umeå University, SE-901 87, Umeå, Sweden.
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Rönnblom A, Thornell L, Shah F, Tano K, Stål P. Unique fiber phenotype composition and metabolic properties of the stapedius and tensor tympani muscles in the human middle ear. J Anat 2023; 243:39-50. [PMID: 36914412 PMCID: PMC10273355 DOI: 10.1111/joa.13861] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 01/19/2023] [Accepted: 02/16/2023] [Indexed: 03/14/2023] Open
Abstract
The middle ear muscles have vital roles, yet their precise function in hearing and protection remains unclear. To better understand the function of these muscles in humans, the morphology, fiber composition, and metabolic properties of nine tensor tympani and eight stapedius muscles were analyzed with immunohistochemical, enzyme-histochemical, biochemical, and morphometric techniques. Human orofacial, jaw, extraocular, and limb muscles were used as references. The immunohistochemical analysis showed that the stapedius and tensor tympani muscles were markedly dominated by fibers expressing fast contracting myosin heavy chain MyHC-2A and MyHC-2X (79 ± 6% vs. 86 ± 9%, respectively, p = 0.04). In fact, the middle ear muscles had one of the highest proportions of MyHC-2 fibers ever reported for human muscles. Interestingly, the biochemical analysis revealed a MyHC isoform of unknown identity in both the stapedius and tensor tympani muscles. Muscle fibers containing two or more MyHC isoforms were relatively frequently observed in both muscles. A proportion of these hybrid fibers expressed a developmental MyHC isoform that is normally absent in adult human limb muscles. The middle ear muscles differed from orofacial, jaw, and limb muscles by having significantly smaller fibers (220 vs. 360 μm2 , respectively) and significantly higher variability in fiber size, capillarization per fiber area, mitochondrial oxidative activity, and density of nerve fascicles. Muscle spindles were observed in the tensor tympani muscle but not in the stapedius muscle. We conclude that the middle ear muscles have a highly specialized muscle morphology, fiber composition, and metabolic properties that generally showed more similarities to orofacial than jaw and limb muscles. Although the muscle fiber characteristics in the tensor tympani and stapedius muscles suggest a capacity for fast, fine-tuned, and sustainable contractions, their difference in proprioceptive control reflects different functions in hearing and protection of the inner ear.
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Affiliation(s)
- Anton Rönnblom
- Department of Clinical Science, Otorhinolaryngology/Sunderby Research UnitUmeå UniversityUmeåSweden
| | - Lars‐Eric Thornell
- Department of Integrative Medical Biology, Laboratory of Muscle BiologyUmeå UniversityUmeåSweden
| | - Farhan Shah
- Department of Integrative Medical Biology, Laboratory of Muscle BiologyUmeå UniversityUmeåSweden
| | - Krister Tano
- Department of Clinical Science, Otorhinolaryngology/Sunderby Research UnitUmeå UniversityUmeåSweden
| | - Per Stål
- Department of Integrative Medical Biology, Laboratory of Muscle BiologyUmeå UniversityUmeåSweden
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Winn RT, Gazzani P, Venables ZC, Shah F, Gkini M, Jeetle S, Oliphant T, Wijesuriya N, Martin-Clavijo A, Husain A, Harwood CA, Rajan N. Variation in management of porocarcinoma: a 10-year retrospective review of 75 cases across three UK tertiary centres. Clin Exp Dermatol 2023; 48:121-124. [PMID: 36730509 DOI: 10.1093/ced/llac052] [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: 01/22/2023]
Affiliation(s)
- R T Winn
- Departments of Dermatology and Histopathology, Royal Victoria Infirmary, Newcastle upon Tyne, UK
| | - P Gazzani
- Departments of Pathology, University Hospitals Birmingham, UK.,Department of Dermatology, Norfolk and Norwich University Hospital, Norwich, UK
| | - Z C Venables
- Norwich Medical School, University of East Anglia, Norwich, UK.,National Disease Registration Service and NHS Digital, Leeds, UK.,Centre for Cell Biology and Cutaneous Research, Blizard Institute, Queen Mary University of London, London, UK
| | - F Shah
- Departments of Pathology, University Hospitals Birmingham, UK
| | - M Gkini
- Departments of Dermatology and Pathology, Royal London Hospital, Barts Health NHS Trust, London, UK.,Departments of Pathology, Royal London Hospital, Barts Health NHS Trust, London, UK
| | - S Jeetle
- Departments of Histopathology, Royal Victoria Infirmary, Newcastle upon Tyne, UK
| | - T Oliphant
- Departments of Dermatology and Histopathology, Royal Victoria Infirmary, Newcastle upon Tyne, UK
| | - N Wijesuriya
- Departments of Pathology, Royal London Hospital, Barts Health NHS Trust, London, UK
| | | | - A Husain
- Departments of Histopathology, Royal Victoria Infirmary, Newcastle upon Tyne, UK
| | - C A Harwood
- Centre for Cell Biology and Cutaneous Research, Blizard Institute, Queen Mary University of London, London, UK.,Departments of Dermatology and Pathology, Royal London Hospital, Barts Health NHS Trust, London, UK
| | - N Rajan
- Departments of Dermatology and Histopathology, Royal Victoria Infirmary, Newcastle upon Tyne, UK.,Departments of Dermatology and Pathology, University Hospitals Birmingham, UK.,Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
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Rooke DR, Ali A, Fender T, Shah F, Chaganti S, Burns D, Stevens A, Vydianath B, Amel-Kashipaz R, Hock YL, Irwin C, Scarisbrick J. Chemotherapy provides less durable disease control in comparison to other systemic therapies in advanced-stage mycosis fungoides and Sezary syndrome. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)00642-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Patel RR, Rooke B, Shah F, Stevens A, Vydianath B, Amel-Kashipaz R, Hock YL, Irwin C, Scarisbrick JJ. Primary cutaneous large cell anaplastic lymphoma and lymphomatoid papulosis: patient demographics, treatment and outcomes from a supraregional skin lymphoma service. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)00627-x] [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: 11/03/2022]
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Shah F, Stål P. Myopathy of the upper airway in snoring and obstructive sleep apnea. Laryngoscope Investig Otolaryngol 2022; 7:636-645. [PMID: 35434344 PMCID: PMC9008167 DOI: 10.1002/lio2.782] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 03/08/2022] [Accepted: 03/11/2022] [Indexed: 11/19/2022] Open
Abstract
Objective Previous reports of muscle changes in the upper airways of obstructive sleep apnea (OSA) patients have primarily been attributed to acquired nerve lesions due to snoring vibrations. The aim of this study was to investigate whether alterations reflecting muscle fiber injuries also occur in the upper respiratory tract of snoring and OSA patients and if these changes relate to upper airway dysfunction. Methods Muscle changes in biopsies from the soft palate of 20 patients suffering from snoring and OSA were investigated with enzyme, immunohistochemical, and morphometric techniques. Biopsies from eight healthy non‐snoring subjects were used as controls. Swallowing dysfunction was assessed with videoradiography. Results Fourteen patients had various degrees of swallowing dysfunction. The muscle samples from all the patients showed changes typical for both motor‐nerve lesions and muscle fiber injuries. The most common alterations reflecting myopathy were fibers having aggregates and disorganization of cytoskeletal proteins (15.5 ± 10.7%). Other changes were fibers with vacuole‐like structures (5.0 ± 4.4%), centrally positioned myonuclei (7.9 ± 4.8%), subsarcolemmal accumulations of nuclei, and various forms and sizes of ring fibers, that is, fibers where the myofilaments were disorganized peripherally (2.8 ± 2.8%). Conclusion The results show that muscle changes mirroring both myopathy and neuropathy co‐exist in the upper airway of snoring OSA patients. These findings suggest muscle weakness as a contributing factor to the upper airway dysfunction in OSA patients.
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Affiliation(s)
- Farhan Shah
- Laboratory of Muscle Biology, Department of Integrative Medical Biology Umeå University Umeå Sweden
| | - Per Stål
- Laboratory of Muscle Biology, Department of Integrative Medical Biology Umeå University Umeå Sweden
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Narula S, Winkle S, Brand K, Shah F, Fujikawa P, Truitt T, Currie M. Hyperhemolysis in the Setting of Mixed-Autoimmune Hemolytic Anemia: A Rare Complication of COVID-19. Cureus 2021; 13:e20356. [PMID: 35028233 PMCID: PMC8751182 DOI: 10.7759/cureus.20356] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2021] [Indexed: 11/13/2022] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a novel human pathogen known for its predilection on the respiratory system. Herein, we present a unique case in which a patient developed hyperhemolysis in the setting of mixed autoimmune hemolytic anemia (AIHA) secondary to SARS-CoV-2. A 33-years-old male with a past medical history of resolved immune thrombocytopenic purpura (ITP) presented to the hospital with symptoms of jaundice after being infected with SARS-CoV-2. On admission, his Hgb was 12.5 g/dL. Lab results showed indirect bilirubin of 13 mg/dL, LDH at 759 U/L, haptoglobin <10, and the percent reticulocyte count was 2.33%. A direct antiglobulin test (DAT) was also positive for C3, IgG, anti-E, in addition to both warm and cold autoantibodies. PCR was positive for COVID-19. Within two days of admission, his Hgb dropped to 5.9 g/dL. A total of seven units of packed red blood cell (pRBC) was required to achieve a Hgb of 6 g/dL in 48 hours. Patients with preexisting hematological abnormalities have a propensity to develop AIHA in the setting of the virus. The majority of the cases described in the literature were associated with warm AIHA. Our patient tested positive for both warm and cold antibodies, which may partially explain the mechanism behind hyperhemolysis in our patient.
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Xing R, Mustapha O, Ali T, Rehman M, Zaidi SS, Baseer A, Batool S, Mukhtiar M, Shafique S, Malik M, Sohail S, Ali Z, Zahid F, Zeb A, Shah F, Yousaf A, Din F. Development, Characterization, and Evaluation of SLN-Loaded Thermoresponsive Hydrogel System of Topotecan as Biological Macromolecule for Colorectal Delivery. Biomed Res Int 2021; 2021:9968602. [PMID: 34285920 PMCID: PMC8275402 DOI: 10.1155/2021/9968602] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 06/21/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Chemotherapeutic drugs cause severe toxicities if administered unprotected, without proper targeting, and controlled release. In this study, we developed topotecan- (TPT-) loaded solid lipid nanoparticles (SLNs) for their chemotherapeutic effect against colorectal cancer. The TPT-SLNs were further incorporated into a thermoresponsive hydrogel system (TRHS) (TPT-SLNs-TRHS) to ensure control release and reduce toxicity of the drug. Microemulsion technique and cold method were, respectively, used to develop TPT-SLNs and TPT-SLNs-TRHS. Particle size, polydispersive index (PDI), and incorporation efficiency (IE) of the TPT-SLNs were determined. Similarly, gelation time, gel strength, and bioadhesive force studies of the TPT-SLNs-TRHS were performed. Additionally, in vitro release and pharmacokinetic and antitumour evaluations of the formulation were done. RESULTS TPT-SLNs have uniformly distributed particles with mean size in nanorange (174 nm) and IE of ~90%. TPT-SLNs-TRHS demonstrated suitable gelation properties upon administration into the rat's rectum. Moreover, drug release was exhibited in a control manner over an extended period of time for the incorporated TPT. Pharmacokinetic studies showed enhanced bioavailability of the TPT with improved plasma concentration and AUC. Further, it showed significantly enhanced antitumour effect in tumour-bearing mice as compared to the test formulations. CONCLUSION It can be concluded that SLNs incorporated in TRHS could be a potential source of the antitumour drug delivery with better control of the drug release and no toxicity.
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Affiliation(s)
- R. Xing
- Department of Pharmacy, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
- Beijing Key Laboratory of Bio-characteristic Profiling for Evaluation of Rational Drug Use, Beijing 100038, China
| | - O. Mustapha
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, DOW University of Health Sciences, 74200 Karachi, Pakistan
| | - T. Ali
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, DOW University of Health Sciences, 74200 Karachi, Pakistan
| | - M. Rehman
- HE.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - S. S. Zaidi
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, DOW University of Health Sciences, 74200 Karachi, Pakistan
| | - A. Baseer
- Department of Pharmacy, Abasyn University Peshawar, KPK, Pakistan
| | - S. Batool
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - M. Mukhtiar
- Department of Pharmacy, Faculty of Medical and Health Sciences, University of Poonch Rawalakot, AJK, Pakistan
| | - S. Shafique
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, DOW University of Health Sciences, 74200 Karachi, Pakistan
| | - M. Malik
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - S. Sohail
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Z. Ali
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - F. Zahid
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - A. Zeb
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Sector G-7/4, Islamabad 44000, Pakistan
| | - F. Shah
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Sector G-7/4, Islamabad 44000, Pakistan
| | - A. Yousaf
- Department of Pharmacy, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - F. Din
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
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Shah F, Ijaz Khan M, Hayat T, Momani S, Imran Khan M. Cattaneo-Christov heat flux (CC model) in mixed convective stagnation point flow towards a Riga plate. Comput Methods Programs Biomed 2020; 196:105564. [PMID: 32535331 DOI: 10.1016/j.cmpb.2020.105564] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 05/19/2020] [Accepted: 05/19/2020] [Indexed: 06/11/2023]
Abstract
This research article proposes an improved Fourier law of heat conduction (Cattaneo-Christov) in presence of heat source/sink. The heat transport characteristics are modeled for mixed convective stagnation point flow by a Riga plate. Flow is generated due to linear stretching velocity. The partial differential system is changed to ordinary differential system through implementing appropriate transformations. Series solutions are developed through semi-analytical method called as homotopy analysis method. Present research article is related to the improved Fourier law of heat conduction (Cattaneo-Christov) over a linear stretchable surface of Riga plate when fluid saturates porous space. The main outcomes of present communication are summarized as: (i) velocity of material particles decreases subject to larger inverse Darcy-number while it enhances via velocity ratio and magnetic parameters (ii) temperature distribution as well as layer thickness enhance for higher estimations of Eckert number and heat source parameter while it decays against Prandtl number (iii) skin friction coefficient decreases through higher values of inverse Darcy number and mixed convection parameter.
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Affiliation(s)
- F Shah
- Department of Mathematics, Quaid-I-Azam University 45320, Islamabad 44000, Pakistan
| | - M Ijaz Khan
- Department of Mathematics, Riphah International University, Faisalabad Campus, Faisalabad 38000, Pakistan.
| | - T Hayat
- Department of Mathematics, Quaid-I-Azam University 45320, Islamabad 44000, Pakistan; Nonlinear Analysis and Applied Mathematics (NAAM) Research Group, Department of Mathematics, Faculty of Science, King Abdulaziz University, P. O. Box 80257, Jeddah 21589, Saudi Arabia
| | - Shaher Momani
- Department of Mathematics and Sciences, College of Humanities and Sciences, Ajman University, Ajman, UAE; Department of Mathematics, Faculty of Science, University of Jordon, Amman 11942, Jordon
| | - M Imran Khan
- School of Engineering, University of Portsmouth, Winston Churchill Avenue Portsmouth PO1 2UP, United Kingdom.
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Shah F, Orchard A, Shakib K. Analysis of performed paediatric oral and maxillofacial procedures under general anaesthesia over a two-year period in a North London NHS Trust. Br J Oral Maxillofac Surg 2020; 59:912-920. [PMID: 34325943 DOI: 10.1016/j.bjoms.2020.09.039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 09/28/2020] [Indexed: 10/23/2022]
Abstract
Dental treatment remains one of the most common reasons for paediatric patients to undergo a general anaesthetic (GA). In addition to a wider scope of practice, oral and maxillofacial (OMF) surgeons are affiliated with this well-reported dentoalveolar surgical burden. Thus far much of the research has shown that the majority of these paediatric GAs are for the treatment of decayed teeth. The aim of this study was to evaluate reasons children in a North London region undergo GA procedures in an OMF department and this population's associated demographic factors. Patients treated by this OMF unit from 2016 to 2017 aged 0-16 were included. Retrospective data was obtained; including age, gender, and ASA physical status. Deprivation was calculated from postcodes using the Index of Multiple Deprivation. Chi squared statistical tests were applied. Data from 600 children undergoing 790 procedures were analysed. A similar number of males and females were treated. The most common age group were the 13-16-year-olds. A total of 89.5% of the patients were ASA I. The greatest surgical burden was simple orthodontic extractions, accounting for 24.4% of all OMF paediatric GA procedures. Deprivation impacted the prevalence of the extraction of carious teeth, soft tissue trauma, and orthodontic-related surgery. In the region studied, more paediatric patients are undergoing GA for orthodontic-related surgery than for the extraction of decayed teeth. The type of facial trauma experienced changes with the age of the child.
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Affiliation(s)
- F Shah
- Cardiff and Vale University Health Board, Cardiff.
| | - A Orchard
- Royal Berkshire Hospital NHS Foundation Trust, Reading
| | - K Shakib
- Oral and Maxillofacial Surgery Department, Royal Free London NHS Foundation Trust, London
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Orchard A, Shah F, Prabhu S. The resurgence of sedation. Br Dent J 2020; 229:148. [PMID: 32811907 PMCID: PMC7431747 DOI: 10.1038/s41415-020-2004-x] [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: 11/09/2022]
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Shahidi SH, Kordi MR, Rajabi H, Malm C, Shah F, Quchan ASK. Exercise modulates the levels of growth inhibitor genes before and after multiple sclerosis. J Neuroimmunol 2020; 341:577172. [DOI: 10.1016/j.jneuroim.2020.577172] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 01/22/2020] [Accepted: 01/28/2020] [Indexed: 01/09/2023]
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Engelina S, Saggu M, Yoo J, Shah F, Stevens A, Irwin C, Chaganti S, Scarisbrick J. Brentuximab a novel antibody therapy: real‐world use confirms efficacy and tolerability for CD30‐positive cutaneous lymphoma. Br J Dermatol 2019; 182:799-800. [DOI: 10.1111/bjd.18535] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- S. Engelina
- University Hospital Birmingham (UHB) Birmingham U.K
| | - M. Saggu
- University Hospital Birmingham (UHB) Birmingham U.K
| | - J. Yoo
- University Hospital Birmingham (UHB) Birmingham U.K
| | - F. Shah
- University Hospital Birmingham (UHB) Birmingham U.K
| | - A. Stevens
- University Hospital Birmingham (UHB) Birmingham U.K
| | - C. Irwin
- University Hospital Birmingham (UHB) Birmingham U.K
| | - S. Chaganti
- University Hospital Birmingham (UHB) Birmingham U.K
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Ritchie S, Qureshi I, Molloy K, Yoo J, Shah F, Stevens A, Irwin C, Chaganti S, Scarisbrick J. Evaluation of haematopoietic stem cell transplantation in patients diagnosed with cutaneous T‐cell lymphoma at a tertiary care centre: should we avoid chemotherapy in conditioning regimes? Br J Dermatol 2019; 182:807-809. [DOI: 10.1111/bjd.18541] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S. Ritchie
- University Hospital Birmingham (UHB) Birmingham U.K
| | - I. Qureshi
- University Hospital Birmingham (UHB) Birmingham U.K
| | - K. Molloy
- University Hospital Birmingham (UHB) Birmingham U.K
| | - J. Yoo
- University Hospital Birmingham (UHB) Birmingham U.K
| | - F. Shah
- University Hospital Birmingham (UHB) Birmingham U.K
| | - A. Stevens
- University Hospital Birmingham (UHB) Birmingham U.K
| | - C. Irwin
- University Hospital Birmingham (UHB) Birmingham U.K
| | - S. Chaganti
- University Hospital Birmingham (UHB) Birmingham U.K
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Shah F, Franklin KA, Holmlund T, Levring Jäghagen E, Berggren D, Forsgren S, Stål P. Desmin and dystrophin abnormalities in upper airway muscles of snorers and patients with sleep apnea. Respir Res 2019; 20:31. [PMID: 30764835 PMCID: PMC6376723 DOI: 10.1186/s12931-019-0999-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 02/04/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND The pathophysiology of obstruction and swallowing dysfunction in snores and sleep apnea patients remains unclear. Neuropathy and to some extent myopathy have been suggested as contributing causes. Recently we reported an absence and an abnormal isoform of two cytoskeletal proteins, desmin, and dystrophin, in upper airway muscles of healthy humans. These cytoskeletal proteins are considered vital for muscle function. We aimed to investigate for muscle cytoskeletal abnormalities in upper airways and its association with swallowing dysfunction and severity of sleep apnea. METHODS Cytoskeletal proteins desmin and dystrophin were morphologically evaluated in the uvula muscle of 22 patients undergoing soft palate surgery due to snoring and sleep apnea and in 10 healthy controls. The muscles were analysed with immunohistochemical methods, and swallowing function was assessed using videoradiography. RESULTS Desmin displayed a disorganized pattern in 21 ± 13% of the muscle fibres in patients, while these fibers were not present in controls. Muscle fibres lacking desmin were present in both patients and controls, but the proportion was higher in patients (25 ± 12% vs. 14 ± 7%, p = 0.009). The overall desmin abnormalities were significantly more frequent in patients than in controls (46 ± 18% vs. 14 ± 7%, p < 0.001). In patients, the C-terminus of the dystrophin molecule was absent in 19 ± 18% of the desmin-abnormal muscle fibres. Patients with swallowing dysfunction had 55 ± 10% desmin-abnormal muscle fibres vs. 22 ± 6% in patients without swallowing dysfunction, p = 0.002. CONCLUSION Cytoskeletal abnormalities in soft palate muscles most likely contribute to pharyngeal dysfunction in snorers and sleep apnea patients. Plausible causes for the presence of these abnormalities is traumatic snoring vibrations, tissue stretch or muscle overload.
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Affiliation(s)
- Farhan Shah
- Department of Integrative Medical Biology, Laboratory of Muscle Biology, Umeå University, SE-901 87 Umeå, Sweden
| | - Karl A. Franklin
- Department of Surgical and Perioperative Sciences, Surgery, Umeå University, Umeå, Sweden
| | - Thorbjörn Holmlund
- Department of Clinical Sciences, Otolaryngology, Umeå University, Umeå, Sweden
| | - Eva Levring Jäghagen
- Department of Odontology, Oral and Maxillofacial Radiology, Umeå University, Umeå, Sweden
| | - Diana Berggren
- Department of Clinical Sciences, Otolaryngology, Umeå University, Umeå, Sweden
| | - Sture Forsgren
- Department of Integrative Medical Biology, Laboratory of Muscle Biology, Umeå University, SE-901 87 Umeå, Sweden
| | - Per Stål
- Department of Integrative Medical Biology, Laboratory of Muscle Biology, Umeå University, SE-901 87 Umeå, Sweden
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Shah F, Stål P, Li J, Sessle BJ, Avivi-Arber L. Tooth extraction and subsequent dental implant placement in Sprague-Dawley rats induce differential changes in anterior digastric myofibre size and myosin heavy chain isoform expression. Arch Oral Biol 2019; 99:141-149. [PMID: 30684691 DOI: 10.1016/j.archoralbio.2019.01.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 11/23/2018] [Revised: 12/22/2018] [Accepted: 01/15/2019] [Indexed: 11/26/2022]
Abstract
OBJECTIVE to determine if tooth loss and dental implant placement in rats induce changes in the morphological and histochemical features of the Anterior Digastric muscle. DESIGN Adult male Sprague-Dawley rats had their right maxillary molar teeth extracted. 'Extraction-1' and 'Extraction-2 groups were sacrificed, respectively, 4 or 8 weeks later, and an Implant group had an implant placement 2 weeks after the molar extraction, and rats were sacrificed 3 weeks later (n = 4/group). Naive rats (n = 3) had no treatment. Morphometric and immunohistochemical techniques quantified Anterior Digastric muscle myofibres' cross-sectional area (CSA) and myosin heavy chain (MyHC) isoform proportions. Significant ANOVAs were followed by post-hoc tests; p < 0.05 and 0.1 were considered to reflect levels of statistical significance. RESULTS In naïve rats, the peripheral regions of the Anterior Digastric muscle was dominated by MyHC-IIx/b isoform and there were no MyHC-I isoforms; the central regions dominated by MyHC-IIx/b and MyHC-IIa isoforms. Compared with naive rats, tooth extraction produced, 8 (but not 4) weeks later, a decreased proportion of fast-contracting fatigue-resistant MyHC-IIa isoform (p = 0.08), and increased proportion of fast and intermediate fatigue-resistance MyHC-IIa/x/b isoform (p = 0.03). Dental implant placement following tooth extraction attenuated the extraction effects but produced a decreased proportion of fast-contracting fatiguable MyHC-llx/b isoform (p = 0.03) in the peripheral region, and increased inter-animal variability in myofibre-CSAs. CONCLUSIONS Given the crucial role that the Anterior Digastric muscle plays in many vital oral functions (e.g., chewing, swallowing), these changes may contribute to the changes in oral sensorimotor functions that occur in humans following such treatments.
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Affiliation(s)
- Farhan Shah
- Department of Integrative Medical Biology, laboratory of Muscle Biology, Umeå University, Umeå, Sweden; Prosthodontics, Faculty of Dentistry, University of Toronto, 124 Edward St., Toronto, Ontario, M5G 1G6, Canada.
| | - Per Stål
- Department of Integrative Medical Biology, laboratory of Muscle Biology, Umeå University, Umeå, Sweden.
| | - Jian Li
- Prosthodontics, Faculty of Dentistry, University of Toronto, 124 Edward St., Toronto, Ontario, M5G 1G6, Canada; Peking University, China.
| | - Barry J Sessle
- Oral Physiology, Faculty of Dentistry and Department of Physiology, Faculty of Medicine, University of Toronto, 124 Edward St., Toronto, Ontario, M5G 1G6, Canada.
| | - Limor Avivi-Arber
- Prosthodontics, Faculty of Dentistry, University of Toronto, 124 Edward St., Toronto, Ontario, M5G 1G6, Canada.
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17
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Yoo J, Shah F, Velangi S, Stewart G, Hague J, Scarisbrick J. Three cases of new diagnosis of mycosis fungoides following commencement on biologic therapies for presumed psoriasis/eczema. Eur J Cancer 2019. [DOI: 10.1016/s0959-8049(19)30625-2] [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: 10/26/2022]
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18
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Shah F, Forsgren S, Holmlund T, Levring Jäghagen E, Berggren D, Franklin KA, Stål P. Neurotrophic factor BDNF is upregulated in soft palate muscles of snorers and sleep apnea patients. Laryngoscope Investig Otolaryngol 2018; 4:174-180. [PMID: 30828636 PMCID: PMC6383323 DOI: 10.1002/lio2.225] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 08/13/2018] [Accepted: 09/29/2018] [Indexed: 11/25/2022] Open
Abstract
Objectives Neuromuscular injuries are suggested to contribute to upper airway collapse and swallowing dysfunction in patients with sleep apnea. Neurotrophins, a family of proteins involved in survival, development, and function of neurons, are reported to be upregulated in limb muscle fibers in response to overload and nerve damage. We aimed to investigate the expression of two important neurotrophins, brain‐derived neurotrophic factor (BDNF) and nerve growth factor (NGF), in muscle fibers of uvula from snorers and sleep apnea patients and to compare these findings with pharyngeal function. Methods Uvula muscle biopsies from 22 patients and 10 controls were analyzed for BDNF, NGF, and cytoskeletal protein desmin using immunohistochemistry. Pharyngeal swallowing function was assessed using videoradiography. Results BDNF, but not NGF, was significantly upregulated in a subpopulation of muscle fibers in snoring and sleep apnea patients. Two major immunoreaction patterns for BDNF were observed; a fine grainy point like BDNF staining was displayed in muscle fibers of both patients and controls (41 ± 23 vs. 25 ± 17%, respectively, P = .06), while an abnormal upregulated intense‐dotted or disorganized reaction was mainly observed in patients (8 ± 8 vs. 2 ± 2%, P = .02). The latter fibers, which often displayed an abnormal immunoreaction for desmin, were more frequent in patients with than without swallowing dysfunction (10 ± 8 vs. 3 ± 3%, P = .05). Conclusion BDNF is upregulated in the upper airway muscles of snorers and sleep apnea patients, and especially in patients with swallowing dysfunction. Upregulation of BDNF is suggested to be a response to denervation, reinnervation, and repair of injured muscle fibers. Our findings propose that damaged upper airway muscles might heal following treatment for snoring and sleep apnea. Level of Evidence NA
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Affiliation(s)
- Farhan Shah
- Department of Integrative Medical BiologyUmeå UniversityUmeåSweden
| | - Sture Forsgren
- Department of Integrative Medical BiologyUmeå UniversityUmeåSweden
| | - Thorbjörn Holmlund
- Laboratory of Muscle Biology, the Department of Clinical Sciences, OtolaryngologyUmeå UniversityUmeåSweden
| | - Eva Levring Jäghagen
- Department of Odontology, Oral, and Maxillofacial RadiologyUmeå UniversityUmeåSweden
| | - Diana Berggren
- Laboratory of Muscle Biology, the Department of Clinical Sciences, OtolaryngologyUmeå UniversityUmeåSweden
| | - Karl A. Franklin
- Department of Surgical and Perioperative SciencesUmeå UniversityUmeåSweden
| | - Per Stål
- Department of Integrative Medical BiologyUmeå UniversityUmeåSweden
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Wernham AGH, Shah F, Velangi S. Nivolumab PD-1 inhibitor immunotherapy associated with vulvar, perineal and perianal lichen sclerosus. Clin Exp Dermatol 2018; 44:e22-e23. [DOI: 10.1111/ced.13825] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/05/2018] [Indexed: 11/30/2022]
Affiliation(s)
- A. G. H. Wernham
- Department of Dermatology; University Hospitals Birmingham NHS Foundation Trust; Mindelsohn Way, Birmingham UK
| | - F. Shah
- Department of Dermatology; University Hospitals Birmingham NHS Foundation Trust; Mindelsohn Way, Birmingham UK
| | - S. Velangi
- Department of Dermatology; University Hospitals Birmingham NHS Foundation Trust; Mindelsohn Way, Birmingham UK
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20
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Shah F, Holmlund T, Levring Jäghagen E, Berggren D, Franklin K, Forsgren S, Stål P. Axon and Schwann Cell Degeneration in Nerves of Upper Airway Relates to Pharyngeal Dysfunction in Snorers and Patients With Sleep Apnea. Chest 2018; 154:1091-1098. [DOI: 10.1016/j.chest.2018.06.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 06/11/2018] [Accepted: 06/12/2018] [Indexed: 10/28/2022] Open
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21
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Yoo J, Shah F, Velangi S, Stewart G, Scarisbrick JS. Secukinumab for treatment of psoriasis: does secukinumab precipitate or promote the presentation of cutaneous T-cell lymphoma? Clin Exp Dermatol 2018; 44:414-417. [PMID: 30284290 DOI: 10.1111/ced.13777] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/23/2018] [Indexed: 01/04/2023]
Abstract
Secukinumab is an interleukin (IL)-17 monoclonal antibody inhibiting T-helper (Th)1-mediated immune response. It has proven high efficacy for moderate to severe psoriasis but data on its long-term toxicities are limited. We describe two patients who received secukinumab for clinically presumed psoriasis, but were subsequently diagnosed with mycosis fungoides (MF) following skin biopsies triggered by skin deterioration while on secukinumab. Previous studies suggested decreased numbers of regulatory T cells (Tregs) with increasing stage of MF, which may lead to the shift in the Treg/Th17 balance towards the Th17 pathway. Theoretically, the use of IL-17 monoclonal antibodies to inhibit Th17 pathway may lead to further immunosuppression and disease progression in cutaneous T-cell lymphoma (CTCL) by shifting the balance towards Tregs, although this hypothesis has not been proven. With uncertainty over the role of IL-17 and Treg/Th17 as well as diagnostic challenges in CTCL, we recommend that patients should have a confirmatory skin biopsy prior to the commencement of biologic therapy.
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Affiliation(s)
- J Yoo
- Department of Dermatology, University Hospitals Birmingham, Birmingham, UK
| | - F Shah
- Department of Dermatology, University Hospitals Birmingham, Birmingham, UK
| | - S Velangi
- Department of Dermatology, University Hospitals Birmingham, Birmingham, UK
| | - G Stewart
- Department of Dermatology, Corbett Hospital, Stourbridge, UK
| | - J S Scarisbrick
- Department of Dermatology, University Hospitals Birmingham, Birmingham, UK
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22
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Zaidi KU, Shah F, Parmar R, Thawani V. Anticandidal synergistic activity of Ocimum sanctum and fluconazole of azole resistance strains of clinical isolates. J Mycol Med 2018; 28:289-293. [PMID: 29730129 DOI: 10.1016/j.mycmed.2018.04.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 01/01/2018] [Revised: 04/13/2018] [Accepted: 04/16/2018] [Indexed: 11/26/2022]
Abstract
Candida albicans is the most prevalent fungal pathogen in humans. It is the causative agent and most associated with serious fungal infection, accounting for more than 90% of cases. It is a most common cause of deep mycoses and vulvovaginal candidiasis. In the present study we found that methanolic extract of O. sanctum in combination of fluconazole shows higher zone of inhibition and lesser MIC values as compared to methanolic extract of leaves of O. sanctum or fluconazole when used alone. Synergistic antimicrobial activity was found when methanolic extract of leaves of O. sanctum was used in combination with fluconazole against C. albicans azole resistance strains isolated from catheter tip (CT) and high vaginal swab (HVS) (FIC≤0.5). Partial synergistic activity was observed against urine (U). Methanolic extract of stem of O. sanctum in combination with fluconazole gave indifferent antifungal results (FIC=1.0-4.0). Benzene extract of the leaf and stem of O. sanctum in combination with fluconazole showed indifferent antifungal results (FIC=1.0-4.0). Aqueous extract of leaves of O. sanctum in combination with fluconazole showed partial synergistic antimicrobial activity against catheter tip (CT) and high vaginal swab (HVS) and urine (U) (FIC=0.5-1.0). In the present study we evaluate the synergism of C. albicans against azole resistant clinical isolates. This study indicates clear evidence supporting the traditional use of O. sanctum in treating Candida infectious diseases.
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Affiliation(s)
- K U Zaidi
- Biotechnology Pharmacology Laboratory, Centre for Scientific Research and Development, People's University, Bhopal 462037, India.
| | - F Shah
- Department of Microbiology, Saifia Science College, Bhopal, India
| | - R Parmar
- Biotechnology Pharmacology Laboratory, Centre for Scientific Research and Development, People's University, Bhopal 462037, India
| | - V Thawani
- Biotechnology Pharmacology Laboratory, Centre for Scientific Research and Development, People's University, Bhopal 462037, India
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23
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Vlachodimitropoulou E, Thomas A, Shah F, Kyei-Mensah A. Pregnancy and iron status in β-thalassaemia major and intermedia: six years' experience in a North London Hospital. J OBSTET GYNAECOL 2018; 38:567-570. [PMID: 29390937 DOI: 10.1080/01443615.2017.1342616] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- E Vlachodimitropoulou
- a Department of Obstetrics and Gynaecology , The Whittington Hospital NHS Trust , London , UK
| | - A Thomas
- a Department of Obstetrics and Gynaecology , The Whittington Hospital NHS Trust , London , UK
| | - F Shah
- a Department of Obstetrics and Gynaecology , The Whittington Hospital NHS Trust , London , UK
| | - A Kyei-Mensah
- a Department of Obstetrics and Gynaecology , The Whittington Hospital NHS Trust , London , UK
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24
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Spencer A, Gazzani P, Gadvi R, Hughes S, Stevens A, Shah F, Scarisbrick J. Computed tomography scanning in mycosis fungoides: optimizing the balance between benefit and harm. Br J Dermatol 2017; 178:563-564. [DOI: 10.1111/bjd.15657] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- A. Spencer
- Department of Dermatology; University Hospitals Birmingham; Mindelsohn Way, Edgbaston, Birmingham B15 2GW U.K
| | - P. Gazzani
- Department of Dermatology; University Hospitals Birmingham; Mindelsohn Way, Edgbaston, Birmingham B15 2GW U.K
| | - R. Gadvi
- Department of Radiology; University Hospitals Birmingham; Mindelsohn Way, Edgbaston, Birmingham B15 2GW U.K
| | - S.J. Hughes
- Department of Radiology; University Hospitals Birmingham; Mindelsohn Way, Edgbaston, Birmingham B15 2GW U.K
| | - A. Stevens
- Department of Oncology; University Hospitals Birmingham; Mindelsohn Way, Edgbaston, Birmingham B15 2GW U.K
| | - F. Shah
- Department of Dermatology; University Hospitals Birmingham; Mindelsohn Way, Edgbaston, Birmingham B15 2GW U.K
| | - J. Scarisbrick
- Department of Dermatology; University Hospitals Birmingham; Mindelsohn Way, Edgbaston, Birmingham B15 2GW U.K
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25
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Haththotuwa R, Zilinskiene L, Oliff J, Vydianath B, Amel-Kashipaz R, Stevens A, Shah F, Chaganti S, Scarisbrick J. Biopsy correlation of surface area vs. single-axis measurements on computed tomography scan of lymph nodes in patients with erythrodermic mycosis fungoides and Sézary syndrome. Br J Dermatol 2017; 177:877-878. [PMID: 28012157 DOI: 10.1111/bjd.15266] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- R Haththotuwa
- Department of Dermatology, University Hospitals Birmingham, Birmingham, U.K
| | - L Zilinskiene
- Department of Radiology, University Hospitals Birmingham, Birmingham, U.K
| | - J Oliff
- Department of Radiology, University Hospitals Birmingham, Birmingham, U.K
| | - B Vydianath
- Department of Pathology, University Hospitals Birmingham, Birmingham, U.K
| | - R Amel-Kashipaz
- Department of Pathology, University Hospitals Birmingham, Birmingham, U.K
| | - A Stevens
- Department of Haematology, University Hospitals Birmingham, Birmingham, U.K
| | - F Shah
- Department of Dermatology, University Hospitals Birmingham, Birmingham, U.K
| | - S Chaganti
- Department of Haematology, University Hospitals Birmingham, Birmingham, U.K
| | - J Scarisbrick
- Department of Dermatology, University Hospitals Birmingham, Birmingham, U.K
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26
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Chan S, Shah F, Chaganti S, Stevens A, Amel-Kashipaz R, Vydianath B, Scarisbrick J. Primary cutaneous B-cell lymphoma: systemic spread is rare while cutaneous relapses and secondary malignancies are frequent. Br J Dermatol 2017; 177:287-289. [DOI: 10.1111/bjd.15071] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S.A. Chan
- University Hospital Birmingham NHS Foundation Trust; Birmingham U.K
| | - F. Shah
- University Hospital Birmingham NHS Foundation Trust; Birmingham U.K
| | - S. Chaganti
- University Hospital Birmingham NHS Foundation Trust; Birmingham U.K
| | - A. Stevens
- University Hospital Birmingham NHS Foundation Trust; Birmingham U.K
| | - R. Amel-Kashipaz
- University Hospital Birmingham NHS Foundation Trust; Birmingham U.K
| | - B. Vydianath
- University Hospital Birmingham NHS Foundation Trust; Birmingham U.K
| | - J.J. Scarisbrick
- University Hospital Birmingham NHS Foundation Trust; Birmingham U.K
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27
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Rineau F, Lmalem H, Ahren D, Shah F, Johansson T, Coninx L, Ruytinx J, Nguyen H, Grigoriev I, Kuo A, Kohler A, Morin E, Vangronsveld J, Martin F, Colpaert JV. Comparative genomics and expression levels of hydrophobins from eight mycorrhizal genomes. Mycorrhiza 2017; 27:383-396. [PMID: 28066872 DOI: 10.1007/s00572-016-0758-4] [Citation(s) in RCA: 10] [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: 10/03/2016] [Accepted: 12/22/2016] [Indexed: 06/06/2023]
Abstract
Hydrophobins are small secreted proteins that are present as several gene copies in most fungal genomes. Their properties are now well understood: they are amphiphilic and assemble at hydrophilic/hydrophobic interfaces. However, their physiological functions remain largely unexplored, especially within mycorrhizal fungi. In this study, we identified hydrophobin genes and analysed their distribution in eight mycorrhizal genomes. We then measured their expression levels in three different biological conditions (mycorrhizal tissue vs. free-living mycelium, organic vs. mineral growth medium and aerial vs. submerged growth). Results confirmed that the size of the hydrophobin repertoire increased in the terminal orders of the fungal evolutionary tree. Reconciliation analysis predicted that in 41% of the cases, hydrophobins evolved from duplication events. Whatever the treatment and the fungal species, the pattern of expression of hydrophobins followed a reciprocal function, with one gene much more expressed than others from the same repertoire. These most-expressed hydrophobin genes were also among the most expressed of the whole genome, which suggests that they play a role as structural proteins. The fine-tuning of the expression of hydrophobin genes in each condition appeared complex because it differed considerably between species, in a way that could not be explained by simple ecological traits. Hydrophobin gene regulation in mycorrhizal tissue as compared with free-living mycelium, however, was significantly associated with a calculated high exposure of hydrophilic residues.
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Affiliation(s)
- F Rineau
- Centre for Environmental Sciences, Environmental Biology group, UHasselt, Hasselt, Belgium.
| | - H Lmalem
- Centre for Environmental Sciences, Environmental Biology group, UHasselt, Hasselt, Belgium
| | - D Ahren
- Department of Biology, Microbial Ecology Group, Lund University, Ecology Building, 223 62, Lund, SE, Sweden
| | - F Shah
- Department of food and environmental sciences, University of Helsinki, Helsinki, Finland
| | - T Johansson
- Department of Biology, Microbial Ecology Group, Lund University, Ecology Building, 223 62, Lund, SE, Sweden
| | - L Coninx
- Centre for Environmental Sciences, Environmental Biology group, UHasselt, Hasselt, Belgium
| | - J Ruytinx
- Centre for Environmental Sciences, Environmental Biology group, UHasselt, Hasselt, Belgium
| | - H Nguyen
- Centre for Environmental Sciences, Environmental Biology group, UHasselt, Hasselt, Belgium
| | - I Grigoriev
- US Department of Energy Joint Genome Institute (JGI), Walnut Creek, CA, USA
| | - A Kuo
- US Department of Energy Joint Genome Institute (JGI), Walnut Creek, CA, USA
| | - A Kohler
- Laboratory of Excellence Advanced Research on the Biology of Tree and Forest Ecosystems (ARBRE), Institut National de la Recherche Agronomique (INRA), UMR 1136, Champenoux, France
- Laboratory of Excellence ARBRE, University of Lorraine, UMR 1136, Champenoux, France
| | - E Morin
- Laboratory of Excellence Advanced Research on the Biology of Tree and Forest Ecosystems (ARBRE), Institut National de la Recherche Agronomique (INRA), UMR 1136, Champenoux, France
- Laboratory of Excellence ARBRE, University of Lorraine, UMR 1136, Champenoux, France
| | - J Vangronsveld
- Centre for Environmental Sciences, Environmental Biology group, UHasselt, Hasselt, Belgium
| | - F Martin
- Laboratory of Excellence Advanced Research on the Biology of Tree and Forest Ecosystems (ARBRE), Institut National de la Recherche Agronomique (INRA), UMR 1136, Champenoux, France
- Laboratory of Excellence ARBRE, University of Lorraine, UMR 1136, Champenoux, France
| | - J V Colpaert
- Centre for Environmental Sciences, Environmental Biology group, UHasselt, Hasselt, Belgium
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28
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Shah I, Shah F. Non-tuberculous mycobacterial empyema in an immunocompetent child. Int J Infect Dis 2016. [DOI: 10.1016/j.ijid.2016.02.876] [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: 10/22/2022] Open
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29
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Abstract
In the recent years, there has been a growing interest in monitoring heavy metal contamination of spices/herbs. Spices and herbs are sources of many bioactive compounds that can improve the tastes of food as well as influence digestion and metabolism processes. In the present study, the levels of some essential and toxic elements such as iron (Fe), zinc (Zn), copper (Cu), chromium (Cr), manganese (Mn), cobalt (Co), nickel (Ni), lead (Pb), and cadmium (Cd), present in common spices/herbs that were purchased from the local market in Saudi Arabia, were analyzed by atomic absorption spectroscopy after digestion with nitric acid/hydrogen peroxide mixture. Samples from the following spices/herbs were used: turmeric, cloves, black pepper, red pepper, cumin, legume, cinnamon, abazir, white pepper, ginger, and coriander. The concentration ranges for the studied elements were found as 48.8-231, 4.7-19.4, 2.5-10.5, below detection level (BDL)-1.0, 8.8-490, 1.0-2.6, and BDL-3.7 µg g(-1) for Fe, Zn, Cu, Cr, Mn, Ni, and Pb, respectively, while Cd and Co levels were below the detection limit. Consumers of these spices/herbs would not be exposed to any risk associated with the daily intake of 10 g of spices per day as far as metals Fe, Zn, Cu, Cr, Mn, Ni, and Pb are concerned.
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Affiliation(s)
- Z S Seddigi
- Department of Chemistry, College of Applied Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
| | - G A Kandhro
- Department of Chemistry, Faculty of Sciences, Erciyes University, Kayseri, Turkey National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, Pakistan Department of Basic Sciences, Mathematics and Humanities, Dawood University of Engineering and Technology, Karachi, Pakistan
| | - F Shah
- Department of Chemistry, Faculty of Sciences, Erciyes University, Kayseri, Turkey National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, Pakistan
| | - E Danish
- Department of Chemistry, College of Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mustafa Soylak
- Department of Chemistry, Faculty of Sciences, Erciyes University, Kayseri, Turkey
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Foo SH, Shah F, Chaganti S, Stevens A, Scarisbrick JJ. Unmasking mycosis fungoides/Sézary syndrome from preceding or co-existing benign inflammatory dermatoses requiring systemic therapies: patients frequently present with advanced disease and have an aggressive clinical course. Br J Dermatol 2016; 174:901-4. [PMID: 26479768 DOI: 10.1111/bjd.14238] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- S H Foo
- Department of Dermatology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, U.K
| | - F Shah
- Department of Dermatology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, U.K
| | - S Chaganti
- Department of Haematology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, U.K
| | - A Stevens
- Department of Oncology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, U.K
| | - J J Scarisbrick
- Department of Dermatology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, U.K
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31
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Shah F, Berggren D, Holmlund T, Levring Jäghagen E, Stål P. Unique expression of cytoskeletal proteins in human soft palate muscles. J Anat 2015; 228:487-94. [PMID: 26597319 DOI: 10.1111/joa.12417] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/15/2015] [Indexed: 11/27/2022] Open
Abstract
The human oropharyngeal muscles have a unique anatomy with diverse and intricate functions. To investigate if this specialization is also reflected in the cytoarchitecture of muscle fibers, intermediate filament proteins and the dystrophin-associated protein complex have been analyzed in two human palate muscles, musculus uvula (UV) and musculus palatopharyngeus (PP), with immunohistochenmical and morphological techniques. Human limb muscles were used as reference. The findings show that the soft palate muscle fibers have a cytoskeletal architecture that differs from the limb muscles. While all limb muscles showed immunoreaction for a panel of antibodies directed against different domains of cytoskeletal proteins desmin and dystrophin, a subpopulation of palate muscle fibers lacked or had a faint immunoreaction for desmin (UV 11.7% and PP 9.8%) and the C-terminal of the dystrophin molecule (UV 4.2% and PP 6.4%). The vast majority of these fibers expressed slow contractile protein myosin heavy chain I. Furthermore, an unusual staining pattern was also observed in these fibers for β-dystroglycan, caveolin-3 and neuronal nitric oxide synthase nNOS, which are all membrane-linking proteins associated with the dystrophin C-terminus. While the immunoreaction for nNOS was generally weak or absent, β-dystroglycan and caveolin-3 showed a stronger immunostaining. The absence or a low expression of cytoskeletal proteins otherwise considered ubiquitous and important for integration and contraction of muscle cells indicate a unique cytoarchitecture designed to meet the intricate demands of the upper airway muscles. It can be concluded that a subgroup of muscle fibers in the human soft palate appears to have special biomechanical properties, and their unique cytoarchitecture must be taken into account while assessing function and pathology in oropharyngeal muscles.
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Affiliation(s)
- Farhan Shah
- Department of Integrative Medical Biology, Laboratory of Muscle Biology, Umeå University, Umeå, Sweden
| | - Diana Berggren
- Department of Clinical Sciences, Otolaryngology, Umeå University, Umeå, Sweden
| | - Thorbjörn Holmlund
- Department of Clinical Sciences, Otolaryngology, Umeå University, Umeå, Sweden
| | - Eva Levring Jäghagen
- Department of Odontology, Oral and Maxillofacial Radiology, Umeå University, Umeå, Sweden
| | - Per Stål
- Department of Integrative Medical Biology, Laboratory of Muscle Biology, Umeå University, Umeå, Sweden
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Wernham A, Shah F, Amel-Kashipaz R, Cobbold M, Scarisbrick J. Stage I mycosis fungoides: frequent association with a favourable prognosis but disease progression and disease-specific mortality may occur. Br J Dermatol 2015; 173:1295-7. [DOI: 10.1111/bjd.13939] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- A.G. Wernham
- Department of Dermatology; University Hospitals Birmingham NHS Foundation Trust; Edgbaston Birmingham B15 2TH U.K
| | - F. Shah
- Department of Dermatology; University Hospitals Birmingham NHS Foundation Trust; Edgbaston Birmingham B15 2TH U.K
| | - R. Amel-Kashipaz
- Department of Haematology; University Hospitals Birmingham NHS Foundation Trust; Edgbaston Birmingham B15 2TH U.K
| | - M. Cobbold
- Department of Immunology; University Hospitals Birmingham NHS Foundation Trust; Edgbaston Birmingham B15 2TH U.K
| | - J. Scarisbrick
- Department of Dermatology; University Hospitals Birmingham NHS Foundation Trust; Edgbaston Birmingham B15 2TH U.K
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Zór K, Heiskanen A, Caviglia C, Vergani M, Landini E, Shah F, Carminati M, Martínez-Serrano A, Moreno TR, Kokaia M, Benayahu D, Keresztes Z, Papkovsky D, Wollenberger U, Svendsen WE, Dimaki M, Ferrari G, Raiteri R, Sampietro M, Dufva M, Emnéus J. A compact multifunctional microfluidic platform for exploring cellular dynamics in real-time using electrochemical detection. RSC Adv 2014. [DOI: 10.1039/c4ra12632g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Dopamine detection from PC12 cell populations and monitoring of yeast redox metabolism demonstrate the multifunctionality of the compact microfluidic cell culture and electrochemical analysis platform with in-built fluid handling and detection unit.
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Affiliation(s)
- K. Zór
- Department of Micro- and Nanotechnology
- Technical University of Denmark
- DK-2800 Kgs. Lyngby, Denmark
| | - A. Heiskanen
- Department of Micro- and Nanotechnology
- Technical University of Denmark
- DK-2800 Kgs. Lyngby, Denmark
| | - C. Caviglia
- Department of Micro- and Nanotechnology
- Technical University of Denmark
- DK-2800 Kgs. Lyngby, Denmark
| | - M. Vergani
- Dipartimento di Elettronica
- Informazione e Bioingegneria
- Politecnico di Milano
- Milan, Italy
| | - E. Landini
- Department of Informatics, Bioengineering, Robotics, and System Engineering
- University of Genova
- Genova, Italy
| | - F. Shah
- Department of Micro- and Nanotechnology
- Technical University of Denmark
- DK-2800 Kgs. Lyngby, Denmark
| | - M. Carminati
- Dipartimento di Elettronica
- Informazione e Bioingegneria
- Politecnico di Milano
- Milan, Italy
| | - A. Martínez-Serrano
- Department of Molecular Biology and Center of Molecular Biology “Severo Ochoa”
- University Autónoma de Madrid
- Madrid, Spain
| | - T. Ramos Moreno
- Department of Molecular Biology and Center of Molecular Biology “Severo Ochoa”
- University Autónoma de Madrid
- Madrid, Spain
- Wallenberg Neuroscience Center
- Lund University
| | - M. Kokaia
- Wallenberg Neuroscience Center
- Lund University
- Lund, Sweden
| | - D. Benayahu
- Department of Cell and Developmental Biology
- Tel Aviv University
- Ramat Aviv, Israel
| | - Zs. Keresztes
- Research Center for Natural Sciences
- Hungarian Academy of Sciences
- Budapest, Hungary
| | - D. Papkovsky
- Department of Biochemistry and Cell Biology
- University College Cork
- Cork, Ireland
| | - U. Wollenberger
- Department of Molecular Enzymology
- University of Potsdam
- Potsdam (Golm), Germany
| | - W. E. Svendsen
- Department of Micro- and Nanotechnology
- Technical University of Denmark
- DK-2800 Kgs. Lyngby, Denmark
| | - M. Dimaki
- Department of Micro- and Nanotechnology
- Technical University of Denmark
- DK-2800 Kgs. Lyngby, Denmark
| | - G. Ferrari
- Dipartimento di Elettronica
- Informazione e Bioingegneria
- Politecnico di Milano
- Milan, Italy
| | - R. Raiteri
- Department of Informatics, Bioengineering, Robotics, and System Engineering
- University of Genova
- Genova, Italy
| | - M. Sampietro
- Dipartimento di Elettronica
- Informazione e Bioingegneria
- Politecnico di Milano
- Milan, Italy
| | - M. Dufva
- Department of Micro- and Nanotechnology
- Technical University of Denmark
- DK-2800 Kgs. Lyngby, Denmark
| | - J. Emnéus
- Department of Micro- and Nanotechnology
- Technical University of Denmark
- DK-2800 Kgs. Lyngby, Denmark
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Rineau F, Shah F, Smits MM, Persson P, Johansson T, Carleer R, Troein C, Tunlid A. Carbon availability triggers the decomposition of plant litter and assimilation of nitrogen by an ectomycorrhizal fungus. ISME J 2013; 7:2010-22. [PMID: 23788332 PMCID: PMC3965319 DOI: 10.1038/ismej.2013.91] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 04/19/2013] [Accepted: 04/23/2013] [Indexed: 11/17/2022]
Abstract
The majority of nitrogen in forest soils is found in organic matter-protein complexes. Ectomycorrhizal fungi (EMF) are thought to have a key role in decomposing and mobilizing nitrogen from such complexes. However, little is known about the mechanisms governing these processes, how they are regulated by the carbon in the host plant and the availability of more easily available forms of nitrogen sources. Here we used spectroscopic analyses and transcriptome profiling to examine how the presence or absence of glucose and/or ammonium regulates decomposition of litter material and nitrogen mobilization by the ectomycorrhizal fungus Paxillus involutus. We found that the assimilation of nitrogen and the decomposition of the litter material are triggered by the addition of glucose. Glucose addition also resulted in upregulation of the expression of genes encoding enzymes involved in oxidative degradation of polysaccharides and polyphenols, peptidases, nitrogen transporters and enzymes in pathways of the nitrogen and carbon metabolism. In contrast, the addition of ammonium to organic matter had relatively minor effects on the expression of transcripts and the decomposition of litter material, occurring only when glucose was present. On the basis of spectroscopic analyses, three major types of chemical modifications of the litter material were observed, each correlated with the expression of specific sets of genes encoding extracellular enzymes. Our data suggest that the expression of the decomposition and nitrogen assimilation processes of EMF can be tightly regulated by the host carbon supply and that the availability of inorganic nitrogen as such has limited effects on saprotrophic activities.
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Affiliation(s)
- F Rineau
- Environmental Biology Group, Centre for Environmental Sciences, Hasselt University, Agoralaan, Diepenbeek, Belgium
| | - F Shah
- Department of Biology, Microbial Ecology Group, Ecology Building, Lund, Sweden
| | - M M Smits
- Environmental Biology Group, Centre for Environmental Sciences, Hasselt University, Agoralaan, Diepenbeek, Belgium
| | - P Persson
- Department of Chemistry, Umeå University, Umeå, Sweden
| | - T Johansson
- Department of Biology, Microbial Ecology Group, Ecology Building, Lund, Sweden
| | - R Carleer
- Applied and Analytical Chemistry, Hasselt University, Agoralaan, Diepenbeek, Belgium
| | - C Troein
- Department of Astronomy and Theoretical Physics, Lund University, Lund, Sweden
| | - A Tunlid
- Department of Biology, Microbial Ecology Group, Ecology Building, Lund, Sweden
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Kolachi N, Kazi T, Khan S, Wadhwa S, Baig J, Afridi H, Shah A, Shah F. Multivariate optimization of cloud point extraction procedure for zinc determination in aqueous extracts of medicinal plants by flame atomic absorption spectrometry. Food Chem Toxicol 2011; 49:2548-56. [DOI: 10.1016/j.fct.2011.06.065] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Revised: 05/23/2011] [Accepted: 06/10/2011] [Indexed: 11/29/2022]
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Tarumi T, Shah F, Tanaka H, Haley AP. Association between central elastic artery stiffness and cerebral perfusion in deep subcortical gray and white matter. Am J Hypertens 2011; 24:1108-13. [PMID: 21654859 DOI: 10.1038/ajh.2011.101] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Central elastic artery stiffness can increase vascular resistance and induce hypertrophic remodeling of cerebral arterioles and, in turn, may increase the risk of cerebral hypoperfusion. In this study, we examined whether central artery stiffness was directly associated with cerebral perfusion. METHODS Thirty-five adults (15 men and 20 women; 49 ± 7 years) were studied. Central artery stiffness was determined by carotid-femoral pulse wave velocity (cfPWV). Regional cerebral perfusion in deep subcortical white and gray matter was measured using arterial spin labeling (ASL). RESULTS Participants were divided into two groups created by a median split of pooled subjects (median cfPWV = 1,090 cm/s). The group with high cfPWV showed significantly lower cerebral perfusion in frontal (29.9 ± 3.6 vs. 50.7 ± 3.7 ml/100 g/min, P = 0.001) and parietal (33.4 ± 6.0 vs. 57.5 ± 5.7 ml/100 g/min, P < 0.01) white matter and hippocampus (44.4 ± 4.4 vs. 60.1 ± 6.1 ml/100 g/min, P = 0.04) than the low cfPWV group. Simple correlation analysis revealed that cfPWV is significantly associated with cerebral perfusion in frontal (r = -0.64, P < 0.001) and parietal (r = -0.36, P = 0.03) white matter. Multiple linear regression analysis further indicated that 11% of the variability in frontal white matter perfusion (ΔR(2) = 0.11, P = 0.03) is explained by cfPWV (β = -0.54, P = 0.03), independent of age, sex, race, heart rate, blood pressure, and cardiovascular medication. CONCLUSIONS Central elastic artery stiffness is inversely and significantly associated with cerebral perfusion in deep subcortical frontal white matter, independent of potential confounding factors.
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Rajaratnam R, Mann C, Balasubramaniam P, Marsden JR, Taibjee SM, Shah F, Lim R, Papini R, Moiemen N, Lewis H. Toxic epidermal necrolysis: retrospective analysis of 21 consecutive cases managed at a tertiary centre. Clin Exp Dermatol 2010; 35:853-62. [DOI: 10.1111/j.1365-2230.2010.03826.x] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Clarke SA, Skinner R, Guest J, Darbyshire P, Cooper J, Shah F, Roberts I, Eiser C. Health-related quality of life and financial impact of caring for a child with Thalassaemia Major in the UK. Child Care Health Dev 2010; 36:118-22. [PMID: 19961496 DOI: 10.1111/j.1365-2214.2009.01043.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [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] [Indexed: 12/01/2022]
Abstract
BACKGROUND Thalassaemia Major (TM) is a serious condition characterized by life-long dependence on blood transfusions and chelation therapy. Our aim was to determine health-related quality of life (HRQOL) in children with TM living in the UK, and the impact of caring for a child receiving National Health Service treatment on family finances. METHODS This was a cross-sectional assessment of HRQOL in children (n= 22) with TM aged 8-18 years. Children were recruited from three UK Paediatric Haematology and Bone Marrow Transplant centres. Mothers completed measures of their child's HRQOL [PedsQL 4.0 (Measurement Model for the Pediatric Quality of Life Inventory, James W. Varni PhD, PedMetrics, Quantifying the Qualitative SM, Copyright 1998-2009)] and behaviour (Strengths and Difficulties questionnaire), and the impact of caring for the child on family finances. RESULTS Child behaviour was within the normal range but child HRQOL was significantly lower than population norms. Family financial concerns associated with TM were associated with poorer child HRQOL (P= 0.020). CONCLUSIONS Thalassaemia Major poses a considerable challenge to child HRQOL, well documented in areas of the world where TM is prevalent. Despite the availability of National Health Service care and financial benefits our study suggests a similar burden in the UK.
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Affiliation(s)
- S A Clarke
- Department of Psychology, University of Sheffield, Sheffield S102TP, UK.
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Kanabrocki EL, Ryan MD, Hermida RC, Ayala DE, Scott GS, Murray D, Bremner WF, Third JLHC, Johnson MC, Foley S, Van Cauteren J, Shah F, Shirazi P, Nemchausky BA, Hooper DC. Altered Circadian Relationship Between Serum Nitric Oxide, Carbon Dioxide, and Uric Acid in Multiple Sclerosis. Chronobiol Int 2009; 21:739-58. [PMID: 15470965 DOI: 10.1081/cbi-200025981] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [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: 11/03/2022]
Abstract
The free radical nitric oxide (NO*) is involved in a variety of diverse biological processes from acting as a vasodilator in the cardiovascular system to being the rate-limiting component in the production of peroxynitrite (ONOO-), a contributor to neurodegenerative disorders such as multiple sclerosis (MS). Uric acid (UA), the end product of purine metabolism in humans and a selective inhibitor of toxic reactions attributed to radicals formed by the interaction of ONOO- and CO2, is generally low in MS patients. We investigated the relationship between serum ONOO-, CO2, and UA in MS patients and normal controls by comparing the circadian characteristics of the NO* metabolites nitrite/ nitrate (NO), CO2, and UA. In this preliminary study, we found the functional relationship ascribed to the circadian timing of the peak and trough levels of NO, CO2, and UA in healthy subjects to be clearly altered in MS patients. These findings suggest that alterations in the temporal relationship between the 24h pattern in serum ONOO- formation and UA may either contribute to or reflect the disease processes in MS.
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Affiliation(s)
- E L Kanabrocki
- VA Hospital, Nuclear Medicine Service 115, Hines, Illinois 60141, USA.
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Fatani SH, Naderali EK, Panchiani S, Shah F, Wong C. The effects of dietary obesity on protein expressions of insulin signaling pathway in rat aorta. Drug Discov Ther 2008; 2:254-261. [PMID: 22504637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The deleterious effects of obesity on insulin response in vasculature may be due to changes in various components of insulin signaling pathway. Therefore, this study was designed to investigate effects of dietary-obesity, removal of palatable diet, and fenofibrate treatment on protein expressions of insulin signaling pathway in rat aorta. Adult male Wistar rats were fed either standard chow or a palatable diet (untreated obese animals) for 15 weeks. Another group of rats were fed the palatable diet for 8 weeks followed by standard chow for further 7 weeks, while a further group were fed the palatable diet for 15 weeks and were dosed with fenofibrate (50 mg/kg/day) for the last 7 weeks. Untreated obese animals had significantly higher body weight than other three groups (p < 0.05 for all). There were no significant differences between IR-β, IRS1 and IRS2, Akt, Shc, and ERK1/2 levels in chow-fed and untreated obese animals, while PI 3-kinase level were significantly (p < 0.0001) decreased in untreated obese animals. Chronic removal of palatable diet completely reversed the levels of PI 3-kinase to the normal while, fenofibrate treatment further reduced PI 3-kinase levels. On the other hand, there was a significant (p < 0.05) increase in eNOS in untreated obese animals compared with chow-fed controls. This effect was reversed by removal of palatable diet and fenofibrate treatment. These data suggest that dietary-obesity selectively inhibits PI 3-kinase while, removal of obesity-inducing diet improves PI 3-kinase levels which may have a role in vascular reactivity.
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Affiliation(s)
- S H Fatani
- Neuroendocrine and Obesity Biology Unit, School of Clinical Science, University of Liverpool, Liverpool L69 3GA, UK
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Abstract
We report two patients with lymphomatoid papulosis (LyP), who were initially diagnosed as systemic T-cell lymphoma. The patients presented with recurrent self-healing cutaneous lesions and skin biopsies showed a lymphocytic infiltrate with malignant features. Clinico-pathological correlation of findings was not performed and results of staging investigations were misinterpreted. Consequently, both patients were unnecessarily treated with multi-agent chemotherapy, radiotherapy and stem cell/bone marrow transplants and sustained long-term adverse effects. The clinical and histological features of LyP are described and appropriate management discussed in detail. Factors leading to the unnecessary treatment of both patients are examined and several learning points highlighted such as the importance of a multidisciplinary approach.
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Affiliation(s)
- S Laube
- SpR in Dermatology, Skin Oncology Service, University Hospital Birmingham, Raddlebarn Road, Selly Oak, Birmingham, UK
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Affiliation(s)
- E Ladoyanni
- Department of Dermatology, Selly Oak Hospital and University Hospital Birmingham, Birmingham, UK.
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Kanabrocki EL, Vesely DL, Hermida RC, Ayala DE, Ryan MD, Burden J, Shah F, Friedman NC, Eladasari B, Nemchausky BA, Dawson S, McCormick JB, Alessandrini SM, Hooper DC. Circadian distribution of hematology variables in subjects with multiple sclerosis. Clin Ter 2006; 157:241-7. [PMID: 16900851] [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] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Hematology variables were measured in blood samples obtained every 3h (8/24h) from 10 multiple sclerosis (MS) patients and 34 healthy subjects and analyzed for circadian characteristics using the population multiple-components method. Red blood cell (RBC) and hemoglobin levels as well as hematocrits exhibited circadian rhythms with minimal amplitudes in healthy individuals and insignificant variability in the smaller group of MS patients. In contrast the total white blood cell (WBC) and platelet counts for MS patients and healthy individuals both showed significant circadian characteristics while the mean 24h WBC and platelet levels did not significantly differ between the two groups. When the different WBC subsets were examined independently, statistically significant circadian rhythms were seen for lymphocytes and eosinophils for both MS patients and healthy individuals and for neutrophils only in the latter. Moreover, the 24h mean levels of lymphocytes, basophils, and eosinophils were significantly higher for the healthy controls while those of monocytes were higher for the MS patients. However, of all the variables tested with significant circadian rhythms in both groups of individuals, only those of lymphocyte numbers exhibited different patterns with somewhat higher amplitude in healthy individuals and a peak level occurring over an hour after that of MS patients. These changes may be the reflection of a disturbance in the regulation of patterns of lymphocyte activity and migration in MS patients. In addition, the elevation in circulating monocytes in MS patients is consistent with the inflammatory nature of the disease.
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Affiliation(s)
- E L Kanabrocki
- Department Nuclear Medicine, University of South Florida, Tampa, FL, USA.
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Baron S, Shah F, Eady R, Moss C. ''Transient'' Bullous Disease of the Newborn may be severe. Br J Dermatol 2003. [DOI: 10.1046/j.1365-2133.2003.05524_10.x] [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: 11/20/2022]
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Abstract
Accepted practice has been to design and operate reservoirs to fill with sediment, generating benefits from remaining storage over a finite period of time. The consequences of sedimentation and project abandonment are left to the future. This 'future' has already arrived for many existing reservoirs and most others will eventually experience a similar fate, thereby imposing substantial costs on society. Such costs could be avoided if sedimentation was minimized and dams were allowed to live forever. The fact that the world's inventory of suitable reservoir sites is limited provides an additional reason for encouraging the sustainable management of dams. This paper provides a framework for assessing the economic feasibility of sediment management strategies that would allow the life of dams to be prolonged indefinitely. Even if reduced accumulation or removal of sediment is technically possible, its economic viability is likely to depend on physical, hydrological and financial parameters. The model presented incorporates such factors and allows a characterization of conditions under which sustainable management would be desirable. The empirical implementation of the model draws upon the substantial amount of technical information available. We analyze the sustainability of reservoirs, with a focus on the trade-off between such sustainability and the short to medium term benefits which a reservoir is expected to produce. The results show that, for a very wide range of realistic parameter values, sustainable management of reservoirs is economically more desirable than the prevailing practice of forcing a finite reservoir life through excessive sediment accumulation.
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Affiliation(s)
- A Palmieri
- Rural Development Department, World Bank, Storrs, CT 06269, USA
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Graham W, Brown SM, Shah F, Tonk VS, Kukolich MK. Retinal pigment mosaicism in Pallister-Killian syndrome (mosaic tetrasomy 12p). Arch Ophthalmol 1999; 117:1648-9. [PMID: 10604674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
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Keung YK, Yung C, Wong JW, Shah F, Cobos E, Tonk V. Unusual presentation of multiple myeloma with "jumping translocation" involving 1q21. A case report and review of the literature. Cancer Genet Cytogenet 1998; 106:135-9. [PMID: 9797778 DOI: 10.1016/s0165-4608(97)00316-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We describe a case of multiple myeloma with unusual manifestations consisting of cutaneous xanthomatosis, temporal arteritis, retinal vasculitis with a complex karyotype, and a "jumping translocation" involving 1q21. The literature of cytogenetic studies of multiple myeloma and of jumping translocation is reviewed.
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Affiliation(s)
- Y K Keung
- Division of Oncology/Hematology, Cytogenetic Laboratory, Texas Tech University Health Sciences Center, Lubbock, USA
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Keung YK, Yung C, Wong JW, Shah F, Cobos E. Association of temporal arteritis, retinal vasculitis, and xanthomatosis with multiple myeloma: case report and literature review. Mayo Clin Proc 1998; 73:657-60. [PMID: 9663195 DOI: 10.1016/s0025-6196(11)64890-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Bone pain, anemia, renal failure, and paraproteinemia are common manifestations in patients with multiple myeloma. In this article, we describe an elderly woman with multiple myeloma who had unusual manifestations of cutaneous xanthomatosis, temporal arteritis, and retinal vasculitis. The literature of the dermatologic, ocular, and rheumatologic manifestations of multiple myeloma is reviewed, and the clinical significance of vasculitis in multiple myeloma is discussed.
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Affiliation(s)
- Y K Keung
- Division of Oncology/Hematology, Texas Tech University Health Sciences Center, Lubbock, USA
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