240 results on '"Anu Jacob"'
Search Results
2. Schmidt's Syndrome: An Uncommon Cause of Spontaneous Hypoglycemia
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George Sarin Zacharia, Anu Jacob, and Binu Mary Bose
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Schmidt's syndrome ,APS-2 ,polyendocrine syndrome ,Addison's disease ,hypoglycemia ,hypothyroidism ,Medicine - Abstract
Schmidt's syndrome, or autoimmune polyendocrine syndrome type 2 (APS-2), is an uncommon disorder characterized by the co-occurrence of autoimmune thyroiditis and adrenalitis. APS-2 is defined as a combination of Addison's disease, autoimmune thyroid disease, and/or type 1 diabetes mellitus. It is an autosomal dominantly inherited polygenic disorder with incomplete penetrance; the candidate genes include but are not limited to HLA-DR3, HLA-DR4, CTLA-4, PTPN22, and CD25-IL-2. Autoimmune thyroiditis, often Hashimoto's disease, results in hypothyroidism. Primary adrenal failure results in enhanced secretion of adrenocorticotrophic hormone melanocyte and co-secretion of melanocyte-stimulating hormone, contributing to hyperpigmentation. Mineralocorticoid deficiency results in salt wasting, fatigue and cramps, postural hypotension, and hyperkalemia. Cortisol, an insulin counter-regulatory hormone, plays a pivotal role in maintaining euglycemia; deficiency predisposes to the development of hypoglycemia. We here report a rare presentation of Schmidt's syndrome as hypoinsulinemic hypoglycemia in a middle-aged male patient. Management includes treatment of acute hypoglycemic episodes with glucose or glucagon, long-term glucocorticoids and mineralocorticoids for adrenal insufficiency, and thyroid hormone supplements for hypothyroidism. This case report and brief overview aim to contribute to the scientific understanding of Schmidt's syndrome/APS-2. Additionally, here we briefly outline the diagnostic challenges in hypoglycemia evaluation, including the utilization of Whipple's triad and the gold standard supervised 72-hour fast and evaluation for primary adrenal and thyroid insufficiencies.
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- 2024
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3. Multicentre Observational Study of Treatment Satisfaction with Cladribine Tablets in the Management of Relapsing Multiple Sclerosis in the Arabian Gulf: The CLUE Study
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Jihad Inshasi, Samar Farouk, Ahmed Shatila, Ali Hassan, Miklos Szolics, Mona Thakre, Deeb Kayed, Derk Krieger, Abubaker Almadani, Taoufik Alsaadi, Beatrice Benedetti, Victoria Mifsud, Anu Jacob, Shatha Sayegh, Amir Boshra, and Raed Alroughani
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Multiple sclerosis ,Cladribine tablets ,Patient-reported outcomes ,Disease-modifying therapy ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Introduction Inconvenient administration and side effects of some disease-modifying therapies (DMTs) for relapsing multiple sclerosis (RMS) can deter adherence. We evaluated treatment satisfaction with cladribine tablets (CladT) for RMS in the Arabian Gulf. Methods This was a non-interventional, multicentre, prospective observational study in non-pregnant/lactating adults (aged ≥ 18 years) with RMS eligible for 1st treatment with CladT (EU labelling). The primary outcome was overall treatment satisfaction at 6 months (Treatment Satisfaction Questionnaire for Medication [TSQM]-14, v. 1.4), Global Satisfaction subscale. Secondary endpoints were TSQM-14 scores for convenience, satisfaction with side effects and satisfaction with effectiveness. Patients provided written informed consent. Results Of 63 patients screened, 58 received CladT and 55 completed the study. Mean age was 33 ± 9 years; mean weight 73 ± 17 kg; 31% male/69% female; mostly from the United Arab Emirates (52%) or Kuwait (30%). All had RMS (mean 0.9 ± 1.1 relapses in the past year), mean Expanded Disability Status Scale (EDSS) 1.4 ± 1.2; 36% were DMT-naïve. Mean [95% CI] score was high for overall treatment satisfaction (77.8 [73.0–82.6]), ease of use (87.4 [83.7–91.0]), tolerability (94.2 [91.0–97.3]) and effectiveness (76.2 [71.6–80.7]). Scores were similar irrespective of DMT history, age, gender, relapse history or EDSS. No relapses or serious treatment-emergent adverse events (TEAE) occurred. Two severe TEAE occurred (fatigue, headache) and 16% reported lymphopenia (two cases of grade 3 lymphopenia). Absolute lymphocyte counts at baseline and 6 months were 2.2 ± 0.8 × 109/L and 1.3 ± 0.3 × 109/L, respectively. Conclusions Treatment satisfaction, ease of use, tolerability and patient-perceived effectiveness for CladT were high, irrespective of baseline demographics, disease characteristics and prior treatment.
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- 2023
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4. Recent Advances in using Lipomyces starkeyi for the Production of Single-Cell Oil
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Anu Jacob and Jissin Mathew
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lipid ,lipomyces starkeyi ,oleaginous microbes ,single-cell oil ,Microbiology ,QR1-502 - Abstract
The clean energy demand and limited fossil fuel reserves require an alternate source that is sustainable and eco-friendly. This demand for clean energy steered the introduction of biofuels such as bioethanol and biodiesel. The third-generation biodiesel is promising as it surpasses the difficulties associated with food security and land usage. The third-generation biodiesel comprises biodiesel derived from oil produced by oleaginous microbes. The term oleaginous refers to microbes with the ability to accumulate lipids to about 20% of the biomass and is found in the form of triacylglycerols. Yeasts can be grown easily on a commercial scale and are amenable to modifications to increase single-cell oil (SCO) productivity. The oleaginous yeast L. starkeyi is a potential lipid producer that can accumulate up to 70% of SCO of its cell dry weight under optimum conditions. Compared to other oleaginous organisms, it can be grown on a wide range of feedstock and a good part of the lipid produced can be converted to biodiesel. This review presents the recent advances in single-cell oil production from L starkeyi and strategies to increase lipid production are analyzed.
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- 2023
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5. Schistosomiasis: An Uncommon Cause of Colonic Polyposis
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George Sarin Zacharia, Sreekanth K Menon, Anu Jacob, Meera Jayakumar Umadevi, and Junu Rajan
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bilharziasis ,colonic polyps ,schistosomiasis ,Medicine ,Nursing ,RT1-120 - Abstract
Schistosomiasis is a parasitic infection caused by the trematodes of the Schistosoma genus. It is one of the neglected tropical diseases, contributing significantly to health-care costs, morbidity, and mortality in the developing world. The resultant disease is broadly classified as urogenital and gastrointestinal schistosomiasis. Intestinal schistosomiasis manifests as altered bowel habits, tenesmus, rectal bleeding, and or abdominal pain. Mucosal lesions include erythema, nodularity, and inflammatory polyps of the colon. Colonic polyps are mucosal lesions, benign or malignant, sporadic or inherited, and have been in the limelight for many years owing to their malignant potential. Inflammatory lesions in schistosomiasis can morphologically resemble neoplastic polyps and pose a diagnostic dilemma. We here report a rare case of intestinal schistosomiasis masquerading as colonic polyps, diagnosed on biopsy and effectively treated with praziquantel.
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- 2023
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6. Health utilities and costs for neuromyelitis optica spectrum disorder
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Dyfrig A. Hughes, Siobhan Bourke, Angela Jones, Rikesh Bhatt, Saif Huda, Kerry Mutch, and Anu Jacob
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Neuromyelitis optica spectrum disorder ,Carers ,Cost of illness ,EQ-5D ,Utility ,Medicine - Abstract
Abstract Background Neuromyelitis optica spectrum disorder (NMOSD) is a rare, neurological disease that places a significant burden on patients, their carers, and healthcare systems. Objectives To estimate patient and carer health utilities and costs of NMOSD within the UK setting. Methods Patients with NMOSD and their carers, recruited via a regional specialist treatment centre, completed a postal questionnaire that included a resource use measure, the EuroQoL (EQ)-5D-5L, EQ-5D-VAS, Vision and Quality of Life Index (VisQoL), Carer Experience Survey (CES) and the Expanded Disability Status Scale (EDSS). The questionnaire asked about respondents’ use of health and community care services, non-medical costs, informal care and work capacity. Data were analysed descriptively. Uncertainties in costs and utilities were assessed using bootstrap analysis. Results 117 patients and 74 informal carers responded to the survey. Patients’ mean EQ-5D-5L and VisQoL health utilities (95% central range) were 0.54 (− 0.29, 1.00) and 0.79 (0.11, 0.99), respectively. EQ-5D-5L utility decreased with increasing EDSS score bandings, from 0.80 (0.75, 0.85) for EDSS ≤ 4.0, to 0.20 (− 0.29, 0.56) for EDSS 8.0 to 9.5. Mean, 3-month total costs were £5623 (£2096, £12,156), but ranged from £562 (£381, £812) to £32,717 (£2888, £98,568) for these EDSS bandings. Carer-reported EQ-5D-5L utility and CES index scores were 0.85 (0.82, 0.89) and 57.67 (52.69, 62.66). Mean, 3-month costs of informal care were £13,150 to £24,560. Conclusions NMOSD has significant impacts on health utilities and NHS and carer costs. These data can be used as inputs to cost-effectiveness analyses of new medicines for NMOSD.
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- 2022
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7. Valorization of Agro-industrial Discards in Fermentation for the Production of Cellulase Enzyme
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Aparna Dinil and Anu Jacob
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banana pseudostem ,cellulase ,jackfruit waste ,solid-state fermentation ,Microbiology ,QR1-502 - Abstract
Cellulases are commercially important enzymes with application in various industries such as biofuel, detergent, food processing, brewery, pulp and paper. To make its production cost-effective, a preferred method is to use solid-state fermentation and with use of inexpensive substrates. Solid-state fermentation is an alternative culturing method and yields higher enzymes compared to submerged fermentation. In the current study, Aspergillus niger was isolated and further developed as inoculum for solid-state fermentation. Agroindustrial discards like banana pseudostem, jackfruit waste were used as the substrates. The substrates were pretreated by acid and were characterized by FTIR analysis to confirm the presence of cellulosic content. Different concentrations of the substrates were attempted for fermentation and the yield of the enzyme was compared. The solid-state fermentation was stable for enzyme production as well as microbial growth. The cellulase activity per gram of the substrate (U/g) was obtained maximum for jackfruit waste-based media (17±1.1 U/g). Both the lignocellulosic substrates were potential substrates for the production of cellulase enzyme. With further optimization and scale-up, this could be a cheap and sustainable process. This study has validated agro-industrial waste’s bioconversion into value-added products that have a remarkable environmental and economic advantage.
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- 2022
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8. Comparison of IVIg and TPE efficacy in the treatment of neurological disorders: a systematic literature review
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Ashwin A. Pinto, Jerome De Seze, Anu Jacob, Stephen Reddel, Anna Yudina, and Kevin Tan
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Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Background: Intravenous immunoglobulin (IVIg) and therapeutic plasma exchange (TPE) are among the main immunotherapies for neurological disorders. Their benefit is greatest in immune-mediated conditions, but their distinct efficacy cannot be simply explained. Objectives: This review aimed to systematically identify studies comparing the efficacy of TPE and IVIg treatments for selected autoimmune neurological disorders and identify optimal therapies for each condition. Data Sources and Methods: PubMed, MEDLINE and Embase databases were searched for original publications from 1990 to 2021. Additional publications were identified via expert recommendations. Conference abstracts older than 2017, review articles and articles without information on TPE and IVIg comparison in title and abstract were excluded. Risks of bias were descriptively addressed, without a meta-analysis. Results: Forty-four studies were included on Guillain–Barré syndrome (20 studies – 12 adult, 5 paediatric, 3 all ages), myasthenia gravis (11 studies –8 adult, 3 paediatric), chronic immune–mediated polyradiculoneuropathy (3 studies –1 adult, 2 paediatric), encephalitis (1 study in adults), neuromyelitis optica spectrum disorders (5 studies –2 adult, 3 all ages) and other conditions (4 studies – all ages). TPE and IVIg were mostly similarly efficacious, measured by clinical outcomes and disease severity scores. Some studies recommended IVIg as easy to administer. TPE procedures, however, have been simplified and the safety has been improved. TPE is currently recommended for management of neuromyelitis optica spectrum disorder relapses and some myasthenia gravis subtypes, in which rapid removal of autoantibodies is crucial. Conclusion: Despite some limitations (e.g. the low evidence levels), this review provides an extensive 30-year-long overview of treatments for various conditions. Both IVIg and TPE are usually comparably efficacious options for autoimmune neurological disorders, with few exceptions. Treatment choices should be patient-tailored and based on available clinical resources. Better designed studies are needed to provide higher-level quality of evidence regarding clinical efficacy of TPE and IVIg treatments.
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- 2023
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9. No strong HLA association with MOG antibody disease in the UK population
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Melissa Grant‐Peters, Giordani Rodrigues Dos Passos, Hing‐Yuen Yeung, Anu Jacob, Saif Huda, Maria Isabel Leite, Calliope A. Dendrou, and Jacqueline Palace
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Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Improvements in assays for detecting serum antibodies against myelin oligodendrocyte glycoprotein (MOG) have led to the appreciation of MOG‐antibody‐associated disease (MOGAD) as a novel disorder. However, much remains unknown about its etiology. We performed human leukocyte antigen (HLA) analysis in 82 MOGAD patients of European ancestry in the UK population. No HLA class II associations were observed, thus questioning the mechanism of anti‐MOG antibody generation. A weak protective association of HLA‐C*03:04 was observed (OR = 0.26, 95% CI = 0.10‐0.71, pc = 0.013), suggesting a need for continued efforts to better understand MOGAD genetics and pathophysiology.
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- 2021
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10. Common variable immunodeficiency with granulomatous-lymphocytic interstitial lung disease and preceding neurological involvement: a case-report
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Jake E. Cowen, James Stevenson, Madhusudan Paravasthu, James Darroch, Anu Jacob, Salaheddin Tueger, John R. Gosney, Anneliese Simons, Lisa G. Spencer, and Eoin P. Judge
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Common variable immunodeficiency ,Granulomatous-lymphocytic interstitial lung disease ,Sarcoidosis ,Diseases of the respiratory system ,RC705-779 - Abstract
Abstract Background Common variable immunodeficiency (CVID) is a group of heterogeneous primary immunodeficiencies characterised by a dysregulated and impaired immune response. In addition to an increased susceptibility to infection, it is also associated with noninfectious autoimmune and lymphoproliferative complications. CVID is rarely associated with neurological complications. Pulmonary involvement is more common, and patients can develop an interstitial lung disease known as granulomatous-lymphocytic interstitial lung disease (GLILD). Case presentation A 50-year-old Caucasian female with a history of Evans syndrome (idiopathic thrombocytopaenic purpura and autoimmune haemolytic anaemia) and hypogammaglobulinaemia initially presented to the neurology clinic with marked cerebellar ataxia and headaches. Following extensive investigation (which included brain biopsy), she was diagnosed with neuro-sarcoidosis and her symptoms resolved following treatment with immunosuppressive therapy. Over the following 10 years, she was extensively investigated for recurrent pulmonary infections and abnormal radiological findings, which included pulmonary nodules, infiltrates and splenomegaly. Subsequently, she was referred to an immunology clinic, where immunoglobulin replacement treatment was started for what was ultimately considered to be CVID. Shortly afterwards, evaluation of her clinical, radiological and histological findings at a specialist interstitial lung disease clinic led to a diagnosis of GLILD. Conclusion CVID is a condition which should be suspected in patients with immunodeficiency and recurrent infections. Concomitant autoimmune disorders such as haemolytic anaemia and immune thrombocytopenia may further support the diagnosis. As illustrated in this case, there is a rare association between CVID and inflammatory involvement of the neurological system. Respiratory physicians should also suspect CVID with associated GLILD in patients with apparent pulmonary granulomatous disease and recurrent infections. In addition, this case also highlights the challenge of diagnosing CVID and its associated features, and how the definitive exclusion of other pathologies such as malignancy, mycobacterial infection and lymphoma is required as part of this diagnostic process.
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- 2020
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11. Predictors of relapse in MOG antibody associated disease: a cohort study
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Saif Huda, Anu Jacob, Rachel Kneen, David Hunt, Mark Woodhall, Patrick Waters, Venkatraman Karthikeayan, Daniel Whittam, Patricia Kelly, Kerry Mutch, Richard Jackson, Katy Murray, and Sam Linaker
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Medicine - Abstract
Objective To identify factors predictive of relapse risk and disability in myelin oligodendrocyte glycoprotein associated disease (MOGAD).Setting Patients were seen by the neuromyelitis optica spectrum disorders (NMOSD) service in Liverpool, UK, a national referral centre for adult patients with MOGAD, NMOSD and related conditions.Participants Patients with MOGAD=76 from England, Northern Ireland and Scotland were included in this cohort study.Results Relapsing disease was observed in 55% (42/76) of cases. Steroid treatment >1 month (OR 0.2, 95% CI 0.05 to 0.80; p=0.022), transverse myelitis (TM) at first attack (OR 0.03, 95% CI 0.004 to 0.23; p=0.001) and male sex (OR 0.16, 95% CI 0.04 to 0.68; p=0.014) were associated with monophasic disease (area under the curve=0.85). Male sex (HR 0.46, 95% CI 0.24 to 0.89; p=0.011) and TM at disease onset (HR 0.42, 95% CI 0.22 to 0.82; p=0.011) were also associated with an increased latency to first relapse. 45% (32/71) of patients became MOG-antibody negative and in relapsing patients negative seroconversion was associated with a lower relapse risk (relative risk 0.11 95% CI 0.05 to 0.26; p
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- 2021
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12. Cohort profile: a collaborative multicentre study of retinal optical coherence tomography in 539 patients with neuromyelitis optica spectrum disorders (CROCTINO)
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Saif Huda, Ho Jin Kim, Anu Jacob, Joachim Havla, Adriana Roca-Fernández, Philipp Albrecht, Jacqueline Palace, Maria Isabel Leite, Friedemann Paul, Alexander U Brandt, Srilakshmi M Sharma, Su-Kyung Jung, Jae-Won Hyun, Frederike Cosima Oertel, Claudia Chien, Romain Marignier, Nasrin Asgari, Elena H Martinez-Lapiscina, Orhan Aktas, Letizia Leocani, Svenja Specovius, Hanna G Zimmermann, Charlotte Bereuter, Lawrence J Cook, Marco Aurélio Lana Peixoto, Mariana Andrade Fontenelle, Alejandro Rubio Diaz, Fereshte Ashtari, Rahele Kafieh, Alireza Dehghani, Mohsen Pourazizi, Lekha Pandit, Anitha Dcunha, Marius Ringelstein, Eugene May, Caryl Tongco, Marco Pisa, Marta Radaelli, Hadas Stiebel-Kalish, Mark Hellmann, Itay Lotan, Sasitorn Siritho, Jérôme de Seze, Thomas Senger, Caroline Tilikete, Alvaro Cobo Calvo, Denis Bernardi Bichuetti, Ivan Maynart Tavares, Kerstin Soelberg, Ayse Altintas, Rengin Yildirim, Uygur Tanriverdi, Zoe Rimler, Allyson Reid, Yang Mao-Draayer, Ibis Soto de Castillo, Michael R Yeaman, and Terry J Smith
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Medicine - Abstract
Purpose Optical coherence tomography (OCT) captures retinal damage in neuromyelitis optica spectrum disorders (NMOSD). Previous studies investigating OCT in NMOSD have been limited by the rareness and heterogeneity of the disease. The goal of this study was to establish an image repository platform, which will facilitate neuroimaging studies in NMOSD. Here we summarise the profile of the Collaborative OCT in NMOSD repository as the initial effort in establishing this platform. This repository should prove invaluable for studies using OCT to investigate NMOSD.Participants The current cohort includes data from 539 patients with NMOSD and 114 healthy controls. These were collected at 22 participating centres from North and South America, Asia and Europe. The dataset consists of demographic details, diagnosis, antibody status, clinical disability, visual function, history of optic neuritis and other NMOSD defining attacks, and OCT source data from three different OCT devices.Findings to date The cohort informs similar demographic and clinical characteristics as those of previously published NMOSD cohorts. The image repository platform and centre network continue to be available for future prospective neuroimaging studies in NMOSD. For the conduct of the study, we have refined OCT image quality criteria and developed a cross-device intraretinal segmentation pipeline.Future plans We are pursuing several scientific projects based on the repository, such as analysing retinal layer thickness measurements, in this cohort in an attempt to identify differences between distinct disease phenotypes, demographics and ethnicities. The dataset will be available for further projects to interested, qualified parties, such as those using specialised image analysis or artificial intelligence applications.
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- 2020
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13. Pediatric NMOSD: A Review and Position Statement on Approach to Work-Up and Diagnosis
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Silvia Tenembaum, E. Ann Yeh, The Guthy-Jackson Foundation International Clinical Consortium (GJCF-ICC), Hesham Abboud, Raed Alroughani, Ayse Altintas, Lilyana Amezcua, Metha Apiwattanakul, Nasrin Asgari, Brenda Banwell, Jeffrey Bennett, Denis Bichuetti, Terrence F. Blaschke, James Bowen, Alexey Boyko, Alexander Brandt, Simon Broadley, Wolfgang Brück, Edgar Carnero Contentti, Robert Carruthers, Tanuja Chitnis, Jeffrey Cohen, Guillermo Delgado-García,, Irena Dujmovic Basuroski, Nikos Evangelou, Kazuo Fujihara, Andrew Goodman, Benjamin Greenberg, May Han, Joachim Havla, Kerstin Hellwig, Jyh Yung Hor, Raffaele Iorio, Anu Jacob, Sven Jarius, Jorge Andres Jimenez Arango, Ilana Katz Sand, Kim Ho Jin, Kim Sung Min, Dorlan Kimbrough, Najib Kissani, Eric Klawiter, Ingo Kleiter, Marco Lana-Peixoto, Maria Isabel Leite, Michael Levy, Yaou Liu, Fred Lublin, Youssoufa Maiga, Yang Mao-Draayer, Romain Marignier, Sara Mariotto, Marcelo Matiello, Esther Melamed, Callene Momtazee, Ichiro Nakashima, Jayne Ness, Celia Oreja-Guevara, Jacqueline Palace, Lekha Pandit, Friedemann Paul, Sarah Planchon Pope, Pröbstel Anne-Katrin, Peiqing Qian, Chao Quan, Pavle Repovic, Claire Riley, Marius Ringelstein, Dalia Rotstein, Charité Klemens Ruprecht, Sá Maria José, Albert Saiz, Douglas Sato, Eslam Shosha, Nancy Sicotte, Sasitorn Siritho, Aksel Siva, Terry J. Smith, de Castillo Ibis Soto, Silva Tenembaum, Leticia Tornes, Pablo Villoslada, Dean Wingerchuk, Jens Wüfel, Bassem Yamout, Michael R. Yeaman, and Scott Zamvil
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pediatric ,neuroinflammation ,NMOSD ,MOG ,treatment ,diagnosis ,Pediatrics ,RJ1-570 - Abstract
Neuromyelitis Optica Spectrum Disorder (NMOSD) is an inflammatory demyelinating disease of the central nervous system (CNS) primarily affecting the optic nerves and spinal cord, but also involving other regions of the CNS including the area postrema, periaqueductal gray matter, and hypothalamus. Knowledge related to pediatric manifestations of NMOSD has grown in recent years, particularly in light of newer information regarding the importance of not only antibodies to aquaporin 4 (AQP4-IgG) but also myelin oligodendrocyte glycoprotein (MOG-IgG) in children manifesting clinically with this syndrome. In this review, we describe the current state of the knowledge related to clinical manifestations, diagnosis, and chronic therapies for children with NMOSD, with emphasis on literature that has been published in the last 5 years. Following the review, we propose recommendations for the assessment/follow up clinical care, and treatment of this population.
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- 2020
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14. Epidemiology of Neuromyelitis Optica Spectrum Disorder and Its Prevalence and Incidence Worldwide
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Jyh Yung Hor, Nasrin Asgari, Ichiro Nakashima, Simon A. Broadley, M. Isabel Leite, Najib Kissani, Anu Jacob, Romain Marignier, Brian G. Weinshenker, Friedemann Paul, Sean J. Pittock, Jacqueline Palace, Dean M. Wingerchuk, Jacinta M. Behne, Michael R. Yeaman, and Kazuo Fujihara
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neuromyelitis optica spectrum disorder ,NMOSD ,AQP4 ,MOG ,prevalence ,incidence ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Neuromyelitis optica spectrum disorder (NMOSD) is an uncommon inflammatory disease of the central nervous system, manifesting clinically as optic neuritis, myelitis, and certain brain and brainstem syndromes. Cases clinically diagnosed as NMOSD may include aquaporin 4 (AQP4)-antibody-seropositive autoimmune astrocytopathic disease, myelin oligodendrocyte glycoprotein (MOG)-antibody-seropositive inflammatory demyelinating disease, and double-seronegative disease. AQP4-antibody disease has a high female-to-male ratio (up to 9:1), and its mean age at onset of ~40 years is later than that seen in multiple sclerosis. For MOG-antibody disease, its gender ratio is closer to 1:1, and it is more common in children than in adults. Its clinical phenotypes differ but overlap with those of AQP4-antibody disease and include acute disseminated encephalomyelitis, brainstem and cerebral cortical encephalitis, as well as optic neuritis and myelitis. Double-seronegative disease requires further research and clarification. Population-based studies over the past two decades report the prevalence and incidence of NMOSD in different populations worldwide. One relevant finding is the varying prevalence observed in different racial groups. Consistently, the prevalence of NMOSD among Whites is ~1/100,000 population, with an annual incidence of
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- 2020
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15. Delayed onset of severe chronic pain in CASPR2 autoantibody–associated Morvan syndrome in a former UK swine abattoir worker
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Andreas Goebel, Austen Peter Moore, and Anu Jacob
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Anesthesiology ,RD78.3-87.3 - Abstract
Abstract. Introduction:. Autoantibody-mediated autoimmunity directed against targets within the voltage-gated potassium channel complex (VGKCC autoantibodies) has been implicated in causing neuropathic pain. Methods:. We report the case of a 76-year-old, United Kingdom male who was diagnosed with contactin-associated protein 2 (CASPR2) autoantibody–associated Morvan syndrome, a rare neurological condition. Results:. He had previously worked in a swine abattoir; exposure to aerosol within swine abattoirs has been reported to elicit an immune response resulting in the production of these autoantibodies; however, unusually, his manifestations emerged with several years' latency. Although this patient's Morvan syndrome–associated seizures were well-controlled with antiepileptic drugs, his neuropathic pain and painful muscle fasciculations did not respond to pharmacological interventions. He refused pain management program treatment, but high-dose immunoglobulin treatment or treatment with rituximab, reported to be sometimes effective in this group, was not initiated because of concerns regarding his general frailty. Discussion and Conclusion:. This case highlights issues around the identification and treatment of rare patients with chronic pain who have voltage-gated potassium channel complex autoantibodies; it also emphasizes the possibility that former swine abattoir workers might be at risk of developing neuropathic pain even years after their vocational exposure.
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- 2018
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16. Facial Onset Sensory and Motor Neuronopathy: Further Evidence for a TDP-43 Proteinopathy
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Besa Ziso, Tim L. Williams, R. Jon L. Walters, Stephan R. Jaiser, Johannes Attems, Udo C. Wieshmann, A.J. Larner, and Anu Jacob
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Facial onset sensory and motor neuronopathy ,Motor neurone disease ,TDP-43 proteinopathy ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Three patients with the clinical and investigation features of facial onset sensory and motor neuronopathy (FOSMN) syndrome are presented, one of whom came to a post-mortem examination. This showed TDP-43-positive inclusions in the bulbar and spinal motor neurones as well as in the trigeminal nerve nuclei, consistent with a neurodegenerative pathogenesis. These data support the idea that at least some FOSMN cases fall within the spectrum of the TDP-43 proteinopathies, and represent a focal form of this pathology.
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- 2015
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17. A multicentre randomiSed controlled TRial of IntraVEnous immunoglobulin compared with standard therapy for the treatment of transverse myelitis in adults and children (STRIVE)
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Michael Absoud, Peter Brex, Olga Ciccarelli, Onyinye Diribe, Gavin Giovannoni, Jennifer Hellier, Rosemary Howe, Rachel Holland, Joanna Kelly, Paul McCrone, Caroline Murphy, Jackie Palace, Andrew Pickles, Michael Pike, Neil Robertson, Anu Jacob, and Ming Lim
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aquaporin 4 ,asia impairment scale ,autoimmune disease ,demyelinating ,immunotherapy ,intravenous immunoglobulin ,neuromyelitis optica ,plasma exchange ,randomised controlled trial ,spinal cord injury ,health-care economics ,Medical technology ,R855-855.5 - Abstract
Background: Transverse myelitis (TM) is an immune-mediated disorder of the spinal cord that affects adults and children and that causes motor, sensory and autonomic dysfunction. There is a prolonged recovery phase, which may continue for many years. Neuromyelitis optica (NMO) is an uncommon relapsing inflammatory central nervous system condition in which TM can be the first presenting symptom. As TM and NMO affect many patients in the prime of their working life, the disorder can impose a significant demand on health resources. There are currently no robust controlled trials in children or adults to inform the optimal treatment of TM. However, treatment with intravenous immunoglobulin (IVIG) is being effectively used in the management of a range of neurological conditions. Although other interventions such as plasma exchange (PLEX) in addition to intravenous (IV) methylprednisolone therapy can be beneficial in TM, PLEX is costly and technically challenging to deliver in the acute setting. IVIG is more readily accessible and less costly. Objective: To evaluate whether additional and early treatment with IVIG is of extra benefit in TM compared with standard therapy with IV steroids. Design: A multicentre, single-blind, parallel-group randomised controlled trial of IVIG compared with standard therapy for the treatment of TM in adults and children. Participants: Patients aged ≥ 1 year diagnosed with either acute first-onset TM or first presentation of NMO. Target recruitment was 170 participants (85 participants per arm). Interventions: Participants were randomised 1 : 1 to treatment with IV methylprednisolone only or treatment with IV methylprednisolone plus 2 g/kg of IVIG in divided doses within 5 days of the first commencement of steroid therapy. Main outcome measures: Primary outcome measure – American Spinal Injury Association (ASIA) Impairment Scale at 6 months post randomisation, with a good outcome defined by a two-grade change. Secondary and tertiary outcome measures – ASIA motor and sensory scales, Expanded Disability Status Scale, health outcome, quality of life, Client Service Receipt Inventory and International Spinal Cord Injury Pain, Bladder and Bowel Basic Data Sets. Results: In total, 26 participants were screened and two were randomised into the study. With the limited sample size, treatment effect could not be determined. However, we identified barriers to accrual that included strict inclusion criteria, the short enrolment window, challenges associated with the use of the ASIA Impairment Scale as an outcome measure and estimation of the incidence of TM. Conclusions: The study did not reach the end point and the effect of IVIG in TM/NMO could not be determined. Investigators should be aware of the potential challenges associated with carrying out a rare disease trial with a short enrolment window. The study question is one that still necessitates investigation. Preliminary work to ameliorate the effect of the barriers encountered in this study is vital. Trial registration: EudraCT 2014-002335-34, ClinicalTrials.gov NCT02398994 and Current Controlled Trials ISRCTN12127581. Funding: This project was funded by the NIHR Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 21, No. 31. See the NIHR Journals Library website for further project information. Funding was also received from Biotest AG, Germany (supply of IVIG) and the Transverse Myelitis Society (excess research cost to facilitate study initiation).
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- 2017
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18. Urinary bladder leiomyosarcoma following radiotherapy in a patient with bilateral retinoblastoma: A case report
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Siddalingeshwar C Doddamani, Suresh Bhat, and Anu Jacob
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Bladder tumor ,leiomyosarcoma ,retinoblastoma ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Retinoblastoma patients have excellent survival following primary treatment by enucleation, radiotherapy or chemotherapy. Patients receiving chemotherapy or radiotherapy may develop second malignancies years later due to DNA damage or genetic mutations. Urinary bladder leiomyosarcoma is one among them and most such cases have been reported after chemotherapy. We report the third case occurring after isolated radiotherapy.
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- 2015
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19. N-methyl D-aspartate receptor encephalitis: A new addition to the spectrum of autoimmune encephalitis
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Boby Varkey Maramattom and Anu Jacob
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Autoimmune encephalopathy ,autoimmune encephalitis ,limbic encephalitis ,N-methyl D-aspartate receptor encephalitis ,paraneoplastic encephalitis ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
A large proportion of "encephalitis" is caused by unknown agents. Of late, a new category of disorders, "autoimmune encephalitis," has been described, which present with features similar to viral encephalitides. A well-delineated and common entity among this group is the recently described anti-NMDAR encephalitis (NMDARE). Although this entity was initially described in young women harboring ovarian teratomas, it is now characterised as well in children and men. Approximately 60% of the patients have an underlying tumor, usually an ovarian teratoma. In 40% of the patients, no cause can be found (idiopathic NMDARE). NMDARE typically presents with psychiatric features followed by altered level of consciousness, severe dysautonomia, hyperkinetic movement disorders, seizures and central hypoventilation. Orofacial dyskinesias resulting in lip and tongue mutilation are quite common. Seizures, are common and may be difficult to treat. The disease can be confirmed by serum and cerebrospinal fluid anti-NMDAR antibodies. Titers of these antibodies can also guide response to treatment. Tumor removal is necessary if identified, followed by immunological treatment. Intravenous methylprednisolone and immunoglobulins aim to suppress/modulate immune response while plasma exchange attempts to remove antibodies and other inflammatory cytokines. Rituximab and cyclophosphamide aim to suppress antibody production. Recovery is slow and often with neurological deficits if treatment is delayed. With many distinctive clinical features, a specific antibody that aids diagnosis, and early effective treatment with commonly available drugs leading to good outcomes, NMDARE is a diagnosis that should be considered early in any case of "unexplained encephalitis."
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- 2011
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20. Knowledge of general population regarding organ donation in a selected rural community of Ernakulam District
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Kachappillil, Anu Jacob, Thankachan, Anjaly, George, Annie K., and Mathew, Betty
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- 2021
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21. Health problems among Elderly - A community based survey in a rural area of Ernakulam district
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Kachappillil, Anu Jacob
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- 2021
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22. The level of Memory Impairment among elderly in a rural community of Ernakulam District
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George, Dhanya and Kachappillil, Anu Jacob
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- 2020
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23. Prevalence and Risk factors of Malnutrition among Elderly-A Cross Sectional Study
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Sophia, Ninu, Kachappillil, Anu Jacob, Jose, Ashitha, Reji, Bibiya P, Varghese, Bincy, Saju, Bini, and Chacko, Blessymol
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- 2019
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24. Functional Status of Elderly in a Rural community at Ernakulam District
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Kachappillil, Anu Jacob, Sophia, Ninu, Saji, Anjitha, Sebastian, Angel, Boban, Amitha, Thankachan, Aleena, and Varghese, Ancy
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- 2019
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25. Knowledge of Staff nurses regarding Legal aspects of patient care
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Shenai, N A Sheela, Joseph, Jisha, and Kachappillil, Anu Jacob
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- 2019
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26. Diagnostic value of intereye difference metrics for optic neuritis in aquaporin-4 antibody seropositive neuromyelitis optica spectrum disorders
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Frederike Cosima Oertel, Hanna G Zimmermann, Seyedamirhosein Motamedi, Claudia Chien, Orhan Aktas, Philipp Albrecht, Marius Ringelstein, Anitha Dcunha, Lekha Pandit, Elena H Martinez-Lapiscina, Bernardo Sanchez-Dalmau, Pablo Villoslada, Jacqueline Palace, Adriana Roca-Fernández, Maria Isabel Leite, Srilakshmi M Sharma, Letizia Leocani, Marco Pisa, Marta Radaelli, Marco Aurélio Lana-Peixoto, Mariana Andrade Fontenelle, Joachim Havla, Fereshteh Ashtari, Rahele Kafieh, Alireza Dehghani, Mohsen Pourazizi, Romain Marignier, Alvaro Cobo-Calvo, Nasrin Asgari, Anu Jacob, Saif Huda, Yang Mao-Draayer, Ari J Green, Rachel Kenney, Michael R Yeaman, Terry J Smith, Lawrence Cook, Alexander U Brandt, Friedemann Paul, Axel Petzold, Neurology, Ophthalmology, APH - Mental Health, APH - Methodology, and Amsterdam Neuroscience - Neuroinfection & -inflammation
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Psychiatry and Mental health ,Surgery ,Neurology (clinical) ,Function and Dysfunction of the Nervous System - Abstract
BackgroundThe novel optic neuritis (ON) diagnostic criteria include intereye differences (IED) of optical coherence tomography (OCT) parameters. IED has proven valuable for ON diagnosis in multiple sclerosis but has not been evaluated in aquaporin-4 antibody seropositive neuromyelitis optica spectrum disorders (AQP4+NMOSD). We evaluated the diagnostic accuracy of intereye absolute (IEAD) and percentage difference (IEPD) in AQP4+NMOSD after unilateral ON >6 months before OCT as compared with healthy controls (HC).MethodsTwenty-eight AQP4+NMOSD after unilateral ON (NMOSD-ON), 62 HC and 45 AQP4+NMOSD without ON history (NMOSD-NON) were recruited by 13 centres as part of the international Collaborative Retrospective Study on retinal OCT in Neuromyelitis Optica study. Mean thickness of peripapillary retinal nerve fibre layer (pRNFL) and macular ganglion cell and inner plexiform layer (GCIPL) were quantified by Spectralis spectral domain OCT. Threshold values of the ON diagnostic criteria (pRNFL: IEAD 5 µm, IEPD 5%; GCIPL: IEAD: 4 µm, IEPD: 4%) were evaluated using receiver operating characteristics and area under the curve (AUC) metrics.ResultsThe discriminative power was high for NMOSD-ON versus HC for IEAD (pRNFL: AUC 0.95, specificity 82%, sensitivity 86%; GCIPL: AUC 0.93, specificity 98%, sensitivity 75%) and IEPD (pRNFL: AUC 0.96, specificity 87%, sensitivity 89%; GCIPL: AUC 0.94, specificity 96%, sensitivity 82%). The discriminative power was high/moderate for NMOSD-ON versus NMOSD-NON for IEAD (pRNFL: AUC 0.92, specificity 77%, sensitivity 86%; GCIP: AUC 0.87, specificity 85%, sensitivity 75%) and for IEPD (pRNFL: AUC 0.94, specificity 82%, sensitivity 89%; GCIP: AUC 0.88, specificity 82%, sensitivity 82%).ConclusionsResults support the validation of the IED metrics as OCT parameters of the novel diagnostic ON criteria in AQP4+NMOSD.
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- 2023
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27. Clinical and MRI measures to identify non-acute MOG-antibody disease in adults
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Cortese, Rosa, Battaglini, Marco, Ferran, Prados, Alessia, Bianchi, Lukas, Haider, Anu, Jacob, Jacqueline, Palace, Silvia, Messina, Friedemann, Paul, Jens, Wuerfel, Romain, Marignier, Françoise, Durand-Dubief, Carolina de Medeiros Rimkus, Dagoberto, Callegaro, Douglas Kazutoshi Sato, Massimo, Filippi, Maria Assunta Rocca, Laura, Cacciaguerra, Alex, Rovira, Jaume, Sastre-Garriga, Georgina, Arrambide, Yaou, Liu, Yunyun, Duan, Claudio, Gasperini, Carla, Tortorella, Serena, Ruggieri, Maria Pia Amato, Ulivelli, Monica, Sergiu, Groppa, Matthias, Grothe, Sara, Llufriu, Maria, Sepulveda, Carsten, Lukas, Barbara, Bellenberg, Ruth, Schneider, Piotr, Sowa, Elisabeth, G Celius, Anne-Katrin, Proebstel, Özgür, Yaldizli, Jannis, Müller, Bruno, Stankoff, Benedetta, Bodini, Luca, Carmisciano, Maria Pia Sormani, Frederik, Barkhof, DE STEFANO, Nicola, Olga, Ciccarelli, Cortese, Rosa, Battaglini, Marco, Prados, Ferran, Bianchi, Alessia, Haider, Luka, Jacob, Anu, Palace, Jacqueline, Messina, Silvia, Paul, Friedemann, Wuerfel, Jen, Marignier, Romain, Durand-Dubief, Françoise, de Medeiros Rimkus, Carolina, Callegaro, Dagoberto, Sato, Douglas Kazutoshi, Filippi, Massimo, Rocca, Maria Assunta, Cacciaguerra, Laura, Rovira, Alex, Sastre-Garriga, Jaume, Arrambide, Georgina, Liu, Yaou, Duan, Yunyun, Gasperini, Claudio, Tortorella, Carla, Ruggieri, Serena, Amato, Maria Pia, Ulivelli, Monica, Groppa, Sergiu, Grothe, Matthia, Llufriu, Sara, Sepulveda, Maria, Lukas, Carsten, Bellenberg, Barbara, Schneider, Ruth, Sowa, Piotr, Celius, Elisabeth G, Proebstel, Anne-Katrin, Yaldizli, Özgür, Müller, Janni, Stankoff, Bruno, Bodini, Benedetta, Carmisciano, Luca, Sormani, Maria Pia, Barkhof, Frederik, De Stefano, Nicola, and Ciccarelli, Olga
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aquaporin 4-antibody positive neuromyelitis optica spectrum disorder ,differential diagnosis ,imaging ,multiple sclerosis ,myelin oligodendrocyte glycoprotein antibody-associated disease ,Neurology (clinical) - Abstract
MRI and clinical features of myelin oligodendrocyte glycoprotein (MOG)-antibody disease may overlap with those of other inflammatory demyelinating conditions posing diagnostic challenges, especially in non-acute phases and when serologic testing for MOG antibodies is unavailable or shows uncertain results. We aimed to identify MRI and clinical markers that differentiate non-acute MOG-antibody disease from aquaporin 4 (AQP4)-antibody neuromyelitis optica spectrum disorder and relapsing remitting multiple sclerosis, guiding in the identification of patients with MOG-antibody disease in clinical practice. In this cross-sectional retrospective study, data from 16 MAGNIMS centres were included. Data collection and analyses were conducted from 2019 to 2021. Inclusion criteria were: diagnosis of MOG-antibody disease; AQP4-neuromyelitis optica spectrum disorder and multiple sclerosis; brain and cord MRI at least 6 months from relapse; and Expanded Disability Status Scale (EDSS) score on the day of MRI. Brain white matter T2 lesions, T1-hypointense lesions, cortical and cord lesions were identified. Random forest models were constructed to classify patients as MOG-antibody disease/AQP4-neuromyelitis optica spectrum disorder/multiple sclerosis; a leave one out cross-validation procedure assessed the performance of the models. Based on the best discriminators between diseases, we proposed a guide to target investigations for MOG-antibody disease. One hundred and sixty-two patients with MOG-antibody disease [99 females, mean age: 41 (±14) years, median EDSS: 2 (0–7.5)], 162 with AQP4-neuromyelitis optica spectrum disorder [132 females, mean age: 51 (±14) years, median EDSS: 3.5 (0–8)], 189 with multiple sclerosis (132 females, mean age: 40 (±10) years, median EDSS: 2 (0–8)] and 152 healthy controls (91 females) were studied. In young patients (
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- 2023
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28. Most Opticospinal Demyelination is NMOSD, not MS-A 17-year UK Longitudinal Cohort Study (P5-3.003)
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Mirasol Forcadela, Chiara Rocchi, Jay Panicker, Kerry Mutch, Saif Huda, Anu Jacob, and Shahd Hamid
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- 2023
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29. The absence of antibodies in longitudinally extensive transverse myelitis and the impact on prognosis (P9-5.029)
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Chiara Rocchi, Mirasol Forcadela, Anu Jacob, Shahd Hamid, and Saif Huda
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- 2023
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30. Progressive myelin oligodendrocyte glycoprotein-associated demyelination mimicking leukodystrophy
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Emily Gibbons, Daniel Whittam, Kariem Elhadd, Maneesh Bhojak, Nitika Rathi, Shivaram Avula, Anu Jacob, Michael Griffiths, and Saif Huda
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Aquaporin 4 ,Neurology ,Immunoglobulin G ,Encephalomyelitis, Acute Disseminated ,Neuromyelitis Optica ,Humans ,Female ,Myelin-Oligodendrocyte Glycoprotein ,Neurology (clinical) ,Neoplasm Recurrence, Local ,Autoantibodies ,Retrospective Studies - Abstract
Background: Myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD) may be associated with relapsing disease, but clinical progression independent of relapse activity is rare. Objectives: To report progressive disease in a patient with MOGAD. Methods: A single retrospective case report. Results: At 4 years of age, the patient had a single episode of acute disseminated encephalomyelitis. She remained well until age 17 years but over the next 9 years developed progressive spastic quadriparesis, cognitive and bulbar dysfunction. Brain imaging showed a leukodystrophy-like pattern of white matter abnormality with contrast enhancement at different time points. Myelin oligodendrocyte glycoprotein (MOG)-IgG was repeatedly positive by live cell-based assay. Conclusion: Secondary progression may be a rare presentation of MOG-IgG-associated disease.
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- 2022
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31. Insertion of S2 into Donor–Acceptor Cyclopropanes: Access to Dithiolanes and Their Conversion to Thietane Dioxides
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Anu Jacob, Philip Barkawitz, Peter G. Jones, and Daniel B. Werz
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Organic Chemistry ,Physical and Theoretical Chemistry ,Biochemistry - Published
- 2022
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32. Techniques in scaffold fabrication process for tissue engineering applications: A review
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Abinash Kumar and Anu Jacob
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Plant Science ,Agronomy and Crop Science ,General Biochemistry, Genetics and Molecular Biology ,Food Science - Published
- 2022
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33. Exploring the consequences of lanthanum incorporation on micro-structural, nanoscale morphological and magnetic traits on manganese dioxide nanoparticles
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Sheeba Anu Jacob, R. Ragu, M. Mary Jaculine, A. Daisy, and S. Jerome Das
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Electrical and Electronic Engineering ,Condensed Matter Physics ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials - Published
- 2022
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34. Formal insertion of selenoketenes into donor–acceptor cyclopropanes: mesomeric alkynylselenolates as key starting materials
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Anu Jacob, Peter G. Jones, and Daniel B. Werz
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Organic Chemistry - Abstract
The mesomerism of deprotonated selenoketene to deprotonated alkynylselenol is exploited to formally insert a selenoketene into donor–acceptor cyclopropanes.
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- 2022
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35. Teaching NeuroImage: Reinhold Hemimedullary Syndrome
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Praveen Kesav, Syed Irteza Hussain, Seby John, Zafar Sajjad, and Anu Jacob
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Resident & Fellow Section ,Neurology (clinical) - Published
- 2023
36. List of contributors
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Mona M. AbouSamra, Rajasekhar Reddy Alavala, K.K. Anagha, Sandeep Arya, A. Kishore Babu, Mona Basha, Biswajit Basu, Sankha Bhattacharya, Arunima Biswas, Roja Rani Budha, Pavan Kumar Chintamaneni, Prashant K. Deshmukh, Jidnesh B. Dharmameher, Prabhanjan S. Giram, S.K. Manirul Islam, Anu Jacob, Pallavi Jain, Goutam Kumar Jena, Rabab Kamel, Kriti Kamwar, Gurpreet Kaur, Jaspreet Kaur, Palki Sahib Kaur, Snimmer Kaur, Prakash N. Kendre, Eknath B. Kole, Ashif KTK, Aditya Kumar, Moumita Kundu, Shilpa R. Mandpe, Bibhash Chandra Mohanta, Mahesh P. More, Swarupananda Mukherjee, Jitendra B. Naik, Anagha R. Nair, Sopan S. Nangare, Roshani Pagar, Tiyas Pal, Chandrakantsing V. Pardeshi, Sagar R. Pardeshi, Rabinarayan Parhi, Dhaivat C. Parikh, Pravin O. Patil, Pritam B. Patil, Tulshidas S. Patil, Bhupendra G. Prajapati, Vipul D. Prajapati, L. Rajeshkumar, Anirudh Pratap Singh Raman, M. Ramesh, GSN Koteswara Rao, Amrita Saha, Suvendu Kumar Sahoo, P. Shailaja, Roopali Sharma, K. Shinomol George, Anoop Singh, Prashant Singh, Sudarshan Singh, Praveen Sivadasu, Sonica Sondhi, N. Vigneshwari, and Khushwant S. Yadav
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- 2023
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37. Ameliorative efficacy of bionanoparticles against neuronal dysfunctions
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K. Shinomol George, Anu Jacob, K.K. Anagha, and Anagha R. Nair
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- 2023
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38. The Role of Plasma Exchange in the Treatment of Refractory Autoimmune Neurological Diseases: a Narrative Review
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Saiju Jacob, Anna Yudina, Anu Jacob, Sarosh R. Irani, and Gordon Mazibrada
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medicine.medical_specialty ,Neurology ,Multiple Sclerosis ,Immunology ,Neuroscience (miscellaneous) ,Disease ,Myasthenia Gravis ,Immunology and Allergy ,Medicine ,Humans ,Chronic Inflammatory Demyelinating Polyradiculoneuropathy ,Pharmacology ,Autoimmune disease ,Autoimmune encephalitis ,Neuromyelitis optica ,Invited Review ,Plasma Exchange ,business.industry ,Multiple sclerosis ,fungi ,Neuromyelitis Optica ,Immunoglobulins, Intravenous ,Polyradiculoneuropathy ,medicine.disease ,Dermatology ,Myasthenia gravis ,Polyradiculoneuropathy, Chronic Inflammatory Demyelinating ,Autoimmune Encephalitis ,business - Abstract
Autoimmune neurological disorders are commonly treated with immunosuppressive therapy. In patients with refractory conditions, standard immunosuppression is often insufficient for complete recovery or to prevent relapses. These patients rely on other treatments to manage their disease. While treatment of refractory cases differs between diseases, intravenous immunoglobulin, plasma exchange (PLEX), and immune-modulating treatments are commonly used. In this review, we focus on five autoimmune neurological disorders that were the themes of the 2018 Midlands Neurological Society meeting on PLEX in refractory neurology: Autoimmune Encephalitis (AE), Multiple Sclerosis (MS), Neuromyelitis Optica Spectrum disorders (NMOSD), Chronic Inflammatory Demyelinating Polyradiculoneuropathy (CIDP) and Myasthenia Gravis (MG). The diagnosis of inflammatory neuropathies is often challenging, and while PLEX can be very effective in refractory autoimmune diseases, its ineffectiveness can be confounded by misdiagnosis. One example is POEMS syndrome (characterized by Polyneuropathy Organomegaly, Endocrinopathy, Myeloma protein, Skin changes), which is often wrongly diagnosed as CIDP; and while CIDP responds well to PLEX, POEMS does not. Accurate diagnosis is therefore essential. Success rates can also differ within ‘one’ disease: e.g. response rates to PLEX are considerably higher in refractory relapsing remitting MS compared to primary or secondary progressive MS. When sufficient efforts are made to correctly pinpoint the diagnosis along with the type and subtype of refractory autoimmune disease, PLEX and other immunotherapies can play a valuable role in the patient management. Graphical abstract
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- 2021
39. Differentiating Multiple Sclerosis From AQP4-Neuromyelitis Optica Spectrum Disorder and MOG-Antibody Disease With Imaging
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Rosa Cortese, Ferran Prados Carrasco, Carmen Tur, Alessia Bianchi, Wallace Brownlee, Floriana De Angelis, Isabel De La Paz, Francesco Grussu, Lukas Haider, Anu Jacob, Baris Kanber, Lise Magnollay, Richard S. Nicholas, Anand Trip, Marios Yiannakas, Ahmed T. Toosy, Yael Hacohen, Frederik Barkhof, Olga Ciccarelli, Radiology and nuclear medicine, Amsterdam Neuroscience - Brain Imaging, Amsterdam Neuroscience - Neuroinfection & -inflammation, CCA - Cancer Treatment and quality of life, CCA - Imaging and biomarkers, Institut Català de la Salut, [Cortese R] Queen Square MS Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, Faculty of Brain Science, University College of London, London, UK. Department of Medicine, Surgery and Neuroscience, University of Siena, Italy. [Prados Carrasco F] Queen Square MS Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, Faculty of Brain Science, University College of London, London, UK. Centre for Medical Imaging Computing, Department of Medical Physics and Biomedical Engineering, University College of London, London, UK. Universitat Oberta de Catalunya, Barcelona, Spain. [Tur C] Queen Square MS Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, Faculty of Brain Science, University College of London, London, UK. Centre d’Esclerosi Múltiple de Catalunya (CEMCAT), Barcelona, Spain. Vall d’Hebron Institut de Recerca (VHIR), Barcelona, Spain. [Bianchi A] Queen Square MS Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, Faculty of Brain Science, University College of London, London, Spain. Universitat Oberta de Catalunya, Barcelona, Spain. [Brownlee W, De Angelis F] Queen Square MS Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, Faculty of Brain Science, University College of London, London, UK. [Grussu F] Queen Square MS Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, Faculty of Brain Science, University College of London, London, UK. Radiomics Group, Vall d’Hebron Institute of Oncology (VHIO), Barcelona, Spain, Vall d'Hebron Barcelona Hospital Campus, and Rosa Cortese, Ferran Prados Carrasco, Carmen Tur, Alessia Bianchi, Wallace Brownlee, Floriana De Angelis, Isabel De La Paz, Francesco Grussu, Lukas Haider, Anu Jacob, Baris Kanber, Lise Magnollay, Richard S Nicholas, Anand Trip, Marios Yiannakas, Ahmed T Toosy, Yael Hacohen, Frederik Barkhof, Olga Ciccarelli
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Sistema nerviós central - Malalties ,Malalties autoimmunitàries ,aminoácidos, péptidos y proteínas::proteínas::glicoproteínas::glicoproteínas de membranas::butirofilinas::glicoproteína mielínica del oligodendrocito [COMPUESTOS QUÍMICOS Y DROGAS] ,Nervous System Diseases::Autoimmune Diseases of the Nervous System::Demyelinating Autoimmune Diseases, CNS::Myelitis, Transverse::Neuromyelitis Optica [DISEASES] ,enfermedades del sistema nervioso::enfermedades autoinmunitarias del sistema nervioso::enfermedades autoinmunes desmielinizantes del SNC::mielitis transversa::neuromielitis óptica [ENFERMEDADES] ,Nervous System Diseases::Autoimmune Diseases of the Nervous System::Demyelinating Autoimmune Diseases, CNS::Multiple Sclerosis [DISEASES] ,Esclerosi múltiple ,Amino Acids, Peptides, and Proteins::Proteins::Glycoproteins::Membrane Glycoproteins::Butyrophilins::Myelin-Oligodendrocyte Glycoprotein [CHEMICALS AND DRUGS] ,Diagnosis::Diagnostic Techniques and Procedures::Diagnostic Imaging::Tomography::Magnetic Resonance Imaging [ANALYTICAL, DIAGNOSTIC AND THERAPEUTIC TECHNIQUES, AND EQUIPMENT] ,enfermedades del sistema nervioso::enfermedades autoinmunitarias del sistema nervioso::enfermedades autoinmunes desmielinizantes del SNC::esclerosis múltiple [ENFERMEDADES] ,Imatgeria per ressonància magnètica ,NA ,diagnóstico::técnicas y procedimientos diagnósticos::diagnóstico por imagen::tomografía::imagen por resonancia magnética [TÉCNICAS Y EQUIPOS ANALÍTICOS, DIAGNÓSTICOS Y TERAPÉUTICOS] ,Neurology (clinical) - Abstract
Background and ObjectivesRelapsing-remitting multiple sclerosis (RRMS), aquaporin-4 antibody–positive neuromyelitis optica spectrum disorder (AQP4-NMOSD), and myelin oligodendrocyte glycoprotein antibody–associated disease (MOGAD) may have overlapping clinical features. There is an unmet need for imaging markers that differentiate between them when serologic testing is unavailable or ambiguous. We assessed whether imaging characteristics typical of MS discriminate RRMS from AQP4-NMOSD and MOGAD, alone and in combination.MethodsAdult, nonacute patients with RRMS, APQ4-NMOSD, and MOGAD and healthy controls were prospectively recruited at the National Hospital for Neurology and Neurosurgery (London, United Kingdom) and the Walton Centre (Liverpool, United Kingdom) between 2014 and 2019. They underwent conventional and advanced brain, cord, and optic nerve MRI and optical coherence tomography (OCT).ResultsA total of 91 consecutive patients (31 RRMS, 30 APQ4-NMOSD, and 30 MOGAD) and 34 healthy controls were recruited. The most accurate measures differentiating RRMS from AQP4-NMOSD were the proportion of lesions with the central vein sign (CVS) (84% vs 33%, accuracy/specificity/sensitivity: 91/88/93%,p< 0.001), followed by cortical lesions (median: 2 [range: 1–14] vs 1 [0–1], accuracy/specificity/sensitivity: 84/90/77%,p= 0.002) and white matter lesions (mean: 39.07 [±25.8] vs 9.5 [±14], accuracy/specificity/sensitivity: 78/84/73%,p= 0.001). The combination of higher proportion of CVS, cortical lesions, and optic nerve magnetization transfer ratio reached the highest accuracy in distinguishing RRMS from AQP4-NMOSD (accuracy/specificity/sensitivity: 95/92/97%,p< 0.001). The most accurate measures favoring RRMS over MOGAD were white matter lesions (39.07 [±25.8] vs 1 [±2.3], accuracy/specificity/sensitivity: 94/94/93%,p= 0.006), followed by cortical lesions (2 [1–14] vs 1 [0–1], accuracy/specificity/sensitivity: 84/97/71%,p= 0.004), and retinal nerve fiber layer thickness (RNFL) (mean: 87.54 [±13.83] vs 75.54 [±20.33], accuracy/specificity/sensitivity: 80/79/81%,p= 0.009). Higher cortical lesion number combined with higher RNFL thickness best differentiated RRMS from MOGAD (accuracy/specificity/sensitivity: 84/92/77%,p< 0.001).DiscussionCortical lesions, CVS, and optic nerve markers achieve a high accuracy in distinguishing RRMS from APQ4-NMOSD and MOGAD. This information may be useful in clinical practice, especially outside the acute phase and when serologic testing is ambiguous or not promptly available.Classification of EvidenceThis study provides Class II evidence that selected conventional and advanced brain, cord, and optic nerve MRI and OCT markers distinguish adult patients with RRMS from AQP4-NMOSD and MOGAD.
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- 2022
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40. Myelin-oligodendrocyte glycoprotein antibody-associated disease
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Axel Petzold, Tobias Derfuss, Bruno Stankoff, Aksel Siva, Maria Pia Amato, Tanuja Chitnis, Alvaro Cobo-Calvo, Romain Marignier, Sandra Vukusic, Nasrin Asgari, Christopher Linington, Edgar Meinl, Emmanuelle Waubant, Marco Capobianco, Patrick Waters, Hans Lassmann, Ingo Kleiter, Anu Jacob, Sean J. Pittock, Mar Tintoré, Friedemann Paul, Brenda Banwell, Kumaran Deiva, Kazuo Fujihara, Jeffrey Bennett, Jacqueline Palace, Krzysztof Selmaj, Olga Ciccarelli, Anthony Traboulsee, Brian G. Weinshenker, Fabienne Brilot, Jérôme De Seze, Maria Isabel Leite, Harry Alexopoulos, Ho Jin Kim, Anne-Katrin Pröbstel, Douglas Kazutoshi Sato, Bernhard Hemmer, Markus Reindl, Yael Hacohen, and Orhan Aktas
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Adult ,Adolescent ,CNS demyelination ,Demyelinating Autoimmune Diseases, CNS ,Disease ,Myelin oligodendrocyte glycoprotein ,Young Adult ,medicine ,Humans ,Immunologic Factors ,Spectrum disorder ,Child ,Pathological ,Autoantibodies ,Neuromyelitis optica ,biology ,business.industry ,Multiple sclerosis ,Middle Aged ,medicine.disease ,Immunology ,biology.protein ,Myelin-Oligodendrocyte Glycoprotein ,Neurology (clinical) ,Antibody ,business ,Biomarkers - Abstract
Myelin-oligodendrocyte glycoprotein antibody-associated disease (MOGAD) is a recently identified autoimmune disorder that presents in both adults and children as CNS demyelination. Although there are clinical phenotypic overlaps between MOGAD, multiple sclerosis, and aquaporin-4 antibody-associated neuromyelitis optica spectrum disorder (NMOSD) cumulative biological, clinical, and pathological evidence discriminates between these conditions. Patients should not be diagnosed with multiple sclerosis or NMOSD if they have anti-MOG antibodies in their serum. However, many questions related to the clinical characterisation of MOGAD and pathogenetic role of MOG antibodies are still unanswered. Furthermore, therapy is mainly based on standard protocols for aquaporin-4 antibody-associated NMOSD and multiple sclerosis, and more evidence is needed regarding how and when to treat patients with MOGAD.
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- 2021
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41. Comparison of Demography, Resource Utilization and Outcomes Between the First and Second Covid-19 Wave in a Teaching Hospital in India
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R Bimal Raj, RV Mookambika, Priya Panicker, V Ravishankar, Anu Jacob, and AD Arun Mohan
- Abstract
Introduction: The novel Coronavirus disease 19 (COVID-19) affected India, predominantly in two time periods – the first wave from March to December 2020, and the second wave began from April 2021 to July 2021. Although the time duration of second wave was shorter than the first, the onslaught of the disease was much more severe during the second wave. Methodology: Demographic, duration of hospitalization, ICU admission, and mortality data of 482 RT-PCR positive COVID-19 individuals were retrospectively analyzed in a teaching hospital in South India. The case file data were compared between the first and second wave. Results: The median age of hospitalisation was 46.2 years and 48.39 years during first and second wave respectively, with male preponderance in second wave. During the second wave, statistically significant difference was found in mean duration of stay (9.04 vs 7.53), mean Spo2 at admission (98.4 vs 96.65), NIV requirement (1.5% vs 8.7%), oxygen requirement(7.4 % vs 13.9%), ICU care, Remedesevir, steroids and enoxaparin. Conclusion: During the second covid wave, significantly higher hospitalisation, intensive care requirements and inpatient mortality was observed. Diabetes and other comorbid conditions had elevated CRP, lymphocytopenia were associated with higher severity and poor outcomes in both waves.
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- 2022
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42. A case series of intracranial dural arteriovenous fistulae mimicking cervical myelitis: a diagnosis not to be missed
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Tom Solomon, Arun Chandran, Mani Puthuran, Emily Gibbons, Anu Jacob, Richard Pullicino, Saif Huda, and Daniel Whittam
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Male ,medicine.medical_specialty ,Cord ,Neurology ,Myelopathy ,DAVF ,Myelitis ,Contrast Media ,Gadolinium ,030218 nuclear medicine & medical imaging ,law.invention ,Intramedullary rod ,03 medical and health sciences ,0302 clinical medicine ,law ,medicine ,Humans ,Cognard type V ,Dural arteriovenous fistula ,Neuroradiology ,Aged ,Retrospective Studies ,Original Communication ,medicine.diagnostic_test ,business.industry ,medicine.disease ,Angiography ,Case note ,Neurology (clinical) ,Radiology ,business ,030217 neurology & neurosurgery - Abstract
Objective To describe the diagnostic features of intracranial dural arteriovenous fistulae (DAVF) presenting with cervical cord or brainstem swelling. Methods Retrospective case note and neuroimaging review of patients with angiographically confirmed DAVF diagnosed during January 2015–June 2020 at a tertiary neuroscience centre (Walton Centre NHS Foundation Trust, Liverpool, UK). Results Six intracranial DAVF causing cervical cord or brainstem oedema (all males aged 60–69 years) and 27 spinal DAVF (88% thoracolumbar) were detected over a 5.5-year period. Significantly more patients with intracranial DAVF received steroids for presumed inflammatory myelitis than those with spinal DAVF (5/6 vs 1/27, p = 0.0001, Fisher’s exact test). Several factors misled the treating clinicians: atypical rostral location of cord oedema (6/6); acute clinical deterioration (4/6); absence (3/6) or failure to recognise (3/6) subtle dilated perimedullary veins on MRI; intramedullary gadolinium enhancement (2/6); and elevated CSF protein (4/5). Acute deterioration followed steroid treatment in 4/5 patients. The following features may suggest DAVF rather than myelitis: older male patients (6/6), symptomatic progression over 4 or more weeks (6/6) and acellular CSF (5/5). Conclusion Intracranial DAVF are uncommon but often misdiagnosed and treated as myelitis, which can cause life-threatening deterioration. Neurologists must recognise suggestive features and consider angiography, especially in older male patients. Dilated perimedullary veins are an important clue to underlying DAVF, but may be invisible or easily missed on routine MRI sequences.
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- 2021
43. (3+2)-Cycloaddition of Donor–Acceptor Cyclopropanes with Thiocyanate: A Facile and Efficient Synthesis of 2-Amino-4,5-dihydrothiophenes
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Ivan A. Andreev, Philip Barkawitz, Anu Jacob, Nina K. Ratmanova, Igor V. Trushkov, and Daniel B. Werz
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Thiocyanate ,010405 organic chemistry ,Chemistry ,Organic Chemistry ,010402 general chemistry ,01 natural sciences ,Combinatorial chemistry ,Cycloaddition ,0104 chemical sciences ,Catalysis ,Lewis acid catalysis ,chemistry.chemical_compound ,Ammonium thiocyanate ,Donor acceptor - Abstract
An easy and efficient route to obtain 2-amino-4,5-dihydrothiophenes is presented. A formal (3+2)-cycloaddition of donor–acceptor cyclopropanes and ammonium thiocyanate catalyzed by Yb(OTf)3 delivers the desired products in good to excellent yields. A broad range of functional groups is tolerated during this process.
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- 2021
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44. Treatment of myelin oligodendrocyte glycoprotein immunoglobulin G–associated disease
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Saif Huda, Sarah Healy, Kariem Elhadd, Michael J. Griffiths, Emily Gibbons, Anu Jacob, and Dan Whittam
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Immunology and Microbiology (miscellaneous) ,biology ,business.industry ,Immunology ,Neuroscience (miscellaneous) ,biology.protein ,Medicine ,Neurology (clinical) ,Disease ,business ,Molecular biology ,Immunoglobulin G ,Myelin oligodendrocyte glycoprotein - Published
- 2021
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45. A study on fat plug myringoplasty for small tympanic membrane perforation
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Kiren T, Elizabeth Anna Samuel, KP Gopakumar, Anu Jacob, and Chethan Kumar
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medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,Perforation (oil well) ,Dehiscence ,Surgery ,Myringoplasty ,medicine.anatomical_structure ,medicine ,Abdomen ,Local anesthesia ,Pure tone audiometry ,Buttocks ,business ,Tympanic Membrane Perforation - Abstract
Introduction: Fat plug myringoplasty is an under-used technique to repair a small central tympanic membrane perforation. It is easy, quick and cost effective way with minimal morbidity. It can be done as an OPD procedure. The fat is readily available from ear lobe, abdomen and buttocks. Fat graft myringoplasty (FGM) is a noninvasive, but underused surgery for perforations of the tympanic membrane. It is also preferable for use in children. Fat tissue has been used as an autogenous material for different surgeries and is known to have a high capacity for resistance. Our study is conducted to evaluate the effectiveness of using fat plug in small central tympanic membrane perforation.Aim: To evaluate the effectiveness of using fat plug in small central tympanic membrane perforation.Materials and Methods: This study was conducted in the ENT department of Sree Mookambika Institute of Medical Sciences, Kulasekharam, Kanyakumari district in a time period from JUNE 2020 to November 2020.The sample size was taken as 30 patients who had presented with complaints of ear discharge, and hearing loss, surgical procedure was done where a fat graft was inserted through the perforation for those patients who fulfilled the inclusion criteria. The study was conducted after obtaining the clearance from Institutional Human Ethical Committee.Study Design: Prospective descriptive study.Results and analysis: 30 patients were included in the study. Age range, 20 to 80 years with a tympanic perforation (size, up to one-quarter of the pars tensa). Out of which 24 % had graft failure due to variety of causes. Success rate was 76% in our study, where as the study conducted by Ringenberg et al. The success rate was 86.5%. Posterior perforations had an overall closure rate of 63%, and in anterior perforations, the overall closure rate was 36%.Conclusion: In conclusion it is simple, safe, quick, economical procedure done under local anesthesia with as success rate as temporalis fascia and minimal or no morbidity and complications. The failure rate in our study was 24% due to infection, detached fat graft and dehiscence due to undersized grafts. Posterior perforations had an overall closure rate of 63%, and in anterior perforations, the overall closure rate was 36%. Pure tone audiometry was used to assess average AB gap pre and post operatively. Postoperatively there was an improvement in hearing compared to preoperative hearing.
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- 2021
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46. A clinical study of etiopathogenesis of epistaxis
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Kingsly S, Elizabeth Anna Samuel, Chetan Kumar, Kiren T, KP Gopakumar, and Anu Jacob
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Deviated nasal septum ,Clinical study ,Plexus ,Pediatrics ,medicine.medical_specialty ,business.industry ,Incidence (epidemiology) ,Etiology ,ENT department ,Medicine ,Young adult ,business ,Dyscrasia - Abstract
Introduction: It is a common clinical condition-encountered by the otorhinolaryngologist. Key clinical areas of epistaxis are the Little’s area and the ‘Woodruff’s plexus. Little’s area lies in the anteroinferior part of septum; a common site of anterior epistaxis in children and young adults [2]. Woodruff s plexus lies just inferior to the posterior end of inferior turbinate; gives rise to posterior, epistaxis in adults [3]. The causes of epistaxis are numerous which can be divided into local and general causes. Common local causes are Trauma, Infections, Foreign bodies, Deviated nasal septum, Neoplasms. General causes are Hypertension, Blood dyscrasias, Chronic liver disorders, Chronic kidney diseases, Overuse of salicylates and anticoagulants.Aim: To study the etiopathogenesis, age and sex distribution of epistaxis.Materials and Methods: This study was conducted in the ENT department of Sree Mookambika Institute of Medical Sciences, Kulasekharam, Kanyakumari district in a time period from January 2020 to September 2020. Fifty patients of both sexes and all age groups presenting with epistaxis are included in this study. The study was conducted after obtaining the clearance from Institutional Human Ethical Committee.Study design: Prospective descriptive study.Results and Analysis: The incidence of epistaxis was 1.2%. It was more common in males. The age incidence was more in the first and second decades and then increased from the fifth decade onwards with almost 48% cases belonging to this category. The seasonal incidence was more during cold, dry, winter months (64%). The commonest etiological factor was trauma (48%), followed by the hypertension (22%). The causes for epistaxis in the first and second decades were trauma, infection and septal abnormalities. Hypertension, trauma and neoplasms accounted for the cases from fourth decade onwards.Conclusion: The conclusions drawn from this study are as follows: Epistaxis is a common clinical condition encountered by the otorhino-laryngologist. It is prevalent in the 1st and 2nd decade and once again the age incidence increases from the 5th decade onwards. It is found to be more common in males than females. It occurs frequently in cold and dry climate. The common causes epistaxis are trauma and hypertention.
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- 2021
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47. A study on chemical cauterisation for small tympanic membrane perforation
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Kingsly, M Erin Jino, Kiren, Gopa Kumar, Anu Jacob, and Chethan Kumar
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medicine.medical_specialty ,Myringoplasty ,Pars tensa ,business.industry ,First line ,Perforation (oil well) ,SEPTAL DEVIATION ,medicine ,Chemical cautery ,business ,Traumatic perforation ,Surgery ,Tympanic Membrane Perforation - Abstract
To study the effectiveness of chemical cautery with patching on chronic tympanic membrane perforations of the pars tensa. Thirty-eight patients with dry tympanic membrane perforations due to inflammatory or traumatic etiology were selected after treating the primary etiological factors like septal deviation and allergic rhinitis. Fifty percentage silver nitrate was used to cauterize the margin and the perforation was covered with thin sterile aluminium foil as a patch. A maximum number of five applications were made, and the patients were followed up for the next 5 years. In this series of 38 patients, highest success was noted among those patients with traumatic perforation, while larger perforations were reduced to small pinhole sizes which were successfully closed by myringoplasty. An overall success rate of 73.75% was achieved. This is a time tested useful method which was popularized by Derlacki (1953), to close small to moderate sized tympanic membrane perforation and should be considered as a first line management in the treatment of tympanic membrane perforation prior to any surgical intervention. Apart from being a simple and economical mode of treatment, it is associated with minimal complications. Though various materials have been used to modify this technique, the principle remains the same and the results obtained in this study is comparable with the previous ones.
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- 2021
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48. Knowledge of general population regarding organ donation in a selected rural community of Ernakulam District
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Betty Mathew, Annie K. George, Anjaly Thankachan, and Anu Jacob Kachappillil
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education.field_of_study ,Geography ,Rural community ,Population ,Organ donation ,education ,Socioeconomics - Published
- 2021
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49. Rituximab abrogates aquaporin-4-specific germinal center activity in patients with neuromyelitis optica spectrum disorders
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Valentina Damato, Jakob Theorell, Adam Al-Diwani, Anne-Kathrin Kienzler, Mateusz Makuch, Bo Sun, Adam Handel, Deniz Akdeniz, Antonio Berretta, Sudarshini Ramanathan, Andrew Fower, Daniel Whittam, Emily Gibbons, Nicholas McGlashan, Edward Green, Saif Huda, Mark Woodhall, Jacqueline Palace, Fintan Sheerin, Patrick Waters, Maria I. Leite, Anu Jacob, and Sarosh R. Irani
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Aquaporin 4 ,Multidisciplinary ,Neuromyelitis Optica ,Humans ,Immunologic Factors ,Lymph Nodes ,Germinal Center ,Rituximab ,Autoantibodies - Abstract
Neuromyelitis optica spectrum disorders (NMOSDs) are caused by immunoglobulin G (IgG) autoantibodies directed against the water channel aquaporin-4 (AQP4). In NMOSDs, discrete clinical relapses lead to disability and are robustly prevented by the anti-CD20 therapeutic rituximab; however, its mechanism of action in autoantibody-mediated disorders remains poorly understood. We hypothesized that AQP4-IgG production in germinal centers (GCs) was a core feature of NMOSDs and could be terminated by rituximab. To investigate this directly, deep cervical lymph node (dCLN) aspirates (n = 36) and blood (n = 406) were studied in a total of 63 NMOSD patients. Clinical relapses were associated with AQP4-IgM generation or shifts in AQP4-IgG subclasses (odds ratio = 6.0; range of 3.3 to 10.8; P < 0.0001), features consistent with GC activity. From seven dCLN aspirates of patients not administered rituximab, AQP4-IgGs were detected alongside specific intranodal synthesis of AQP4-IgG. AQP4-reactive B cells were isolated from unmutated naive and mutated memory populations in both blood and dCLNs. After rituximab administration, fewer clinical relapses (annual relapse rate of 0.79 to 0; P < 0.001) were accompanied by marked reductions in both AQP4-IgG (fourfold; P = 0.004) and intranodal B cells (430-fold; P < 0.0001) from 11 dCLNs. Our findings implicate ongoing GC activity as a rituximab-sensitive driver of AQP4 antibody production. They may explain rituximab’s clinical efficacy in several autoantibody-mediated diseases and highlight the potential value of direct GC measurements across autoimmune conditions.
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- 2022
50. Insertion of S
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Anu, Jacob, Philip, Barkawitz, Peter G, Jones, and Daniel B, Werz
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A facile and efficient route to dithiolanes starting from donor-acceptor cyclopropanes is reported. Potassium
- Published
- 2022
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