1
|
Aravinth SP, Rajendran S, Li Y, Wu M, Yi Wong AH, Schwarz H. Epstein-Barr virus-encoded LMP1 induces ectopic CD137 expression on Hodgkin and Reed-Sternberg cells via the PI3K-AKT-mTOR pathway. Leuk Lymphoma 2019; 60:2697-2704. [PMID: 31058559 DOI: 10.1080/10428194.2019.1607330] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
CD137 is a potent co-stimulatory molecule on activated T cells, and its ligand (CD137L) is expressed on antigen presenting cells (APC). Ectopic expression of CD137 has been identified on Hodgkin Reed-Sternberg (HRS) cells, the malignant cells in Hodgkin Lymphoma (HL), and CD137 on HRS cells was found to support growth of HRS cells and escape from immune surveillance. HRS cells are mostly derived from B cells, which poses the question of how B cells acquire ectopic CD137 expression during the transformation process. HL is associated with Epstein-Barr virus (EBV) infection. We show that the EBV latent membrane protein 1 (LMP1) induces expression of CD137 in HRS cell lines. In a HL tissue microarray, 96% of the CD137-positive HL cases stained positive for LMP1. LMP1 utilizes the PI3K-AKT-mTOR pathway for inducing CD137 expression. These findings support the role of EBV in HL pathogenesis.
Collapse
Affiliation(s)
- Sneha Priya Aravinth
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,NUS Immunology Programme, Life Sciences Institute, National University of Singapore, Singapore, Singapore
| | - Sakthi Rajendran
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,NUS Immunology Programme, Life Sciences Institute, National University of Singapore, Singapore, Singapore
| | - Yating Li
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,NUS Immunology Programme, Life Sciences Institute, National University of Singapore, Singapore, Singapore
| | - Meihui Wu
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,NUS Immunology Programme, Life Sciences Institute, National University of Singapore, Singapore, Singapore
| | - Anna Hiu Yi Wong
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,NUS Immunology Programme, Life Sciences Institute, National University of Singapore, Singapore, Singapore
| | - Herbert Schwarz
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,NUS Immunology Programme, Life Sciences Institute, National University of Singapore, Singapore, Singapore
| |
Collapse
|
2
|
Yuki N, Chan AC, Wong AHY, Inoue T, Yokai M, Kurihara T, Devaux JJ, Wilder-Smith E. Acute painful autoimmune neuropathy: A variant of Guillain-Barré syndrome. Muscle Nerve 2017; 57:320-324. [PMID: 28667708 DOI: 10.1002/mus.25738] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/25/2017] [Indexed: 02/02/2023]
Abstract
INTRODUCTION We present a painful small-fiber neuropathy variant of Guillain-Barré syndrome characterized by antecedent infectious symptoms, hyporeflexia, and albuminocytologic dissociation. METHODS Two patients received intravenous immunoglobulin, one corticosteroids. RESULTS The patients subsequently improved. Immunoglobulin G (IgG) antibodies in their acute phase sera strongly bound to murine small nerve fibers, and the binding disappeared during the convalescent phase. Serum transfer to a murine nociceptive model induced transient alteration in thermal pain responses. DISCUSSION Our case series suggest that an acute transient immune response can be directed against small nerve fibers, and that patients so affected can exhibit features of Guillain-Barré syndrome. Muscle Nerve 57: 320-324, 2018.
Collapse
Affiliation(s)
- Nobuhiro Yuki
- Department of Medicine, Yong Loo Lin School of Medicine, National University Singapore, 1E Kent Ridge Road, Singapore, 119228.,Department of Physiology, Yong Loo Lin School of Medicine, National University Singapore, Singapore
| | - Amanda C Chan
- Department of Neurology, National University Hospital Systems, Singapore
| | - Anna Hiu Yi Wong
- Department of Medicine, Yong Loo Lin School of Medicine, National University Singapore, 1E Kent Ridge Road, Singapore, 119228
| | - Takayuki Inoue
- Department of Medicine, Yong Loo Lin School of Medicine, National University Singapore, 1E Kent Ridge Road, Singapore, 119228
| | - Masafumi Yokai
- Department of Pharmacology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Takashi Kurihara
- Department of Pharmacology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - JérôMe J Devaux
- Aix-Marseille Université, CNRS, CRN2M-UMR 7286, Marseille, France
| | - Einar Wilder-Smith
- Department of Medicine, Yong Loo Lin School of Medicine, National University Singapore, 1E Kent Ridge Road, Singapore, 119228.,Department of Neurology, National University Hospital Systems, Singapore.,Department of Neurology, Kantonsspital Luzern, Switzerland
| |
Collapse
|
3
|
Wong AHY, Kokubun N, Fukami Y, Miyaji K, Yuki N. Chronic inflammatory demyelinating polyneuropathy with membranous nephropathy. J Peripher Nerv Syst 2016; 20:63-6. [PMID: 25977098 DOI: 10.1111/jns.12113] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 04/12/2015] [Accepted: 04/17/2015] [Indexed: 12/29/2022]
Affiliation(s)
- Anna Hiu Yi Wong
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Norito Kokubun
- Department of Neurology, Dokkyo Medical University, Tochigi, Japan
| | - Yuki Fukami
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Kazuki Miyaji
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Nobuhiro Yuki
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Brain & Mind Research Institute, University of Sydney, Sydney, Sydney, New South Wales, Australia
| |
Collapse
|
4
|
Wong AHY, Fukami Y, Sudo M, Kokubun N, Hamada S, Yuki N. Sialylated IgG-Fc: a novel biomarker of chronic inflammatory demyelinating polyneuropathy. J Neurol Neurosurg Psychiatry 2016; 87:275-9. [PMID: 25814494 DOI: 10.1136/jnnp-2014-309964] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 03/02/2015] [Indexed: 12/21/2022]
Abstract
OBJECTIVE Sialylation in Fc portion of IgG plays a crucial role in the pathogenesis of autoimmune diseases and the working mechanism of intravenous immunoglobulin (IVIG). We aim to test whether IgG-Fc sialylation is a biomarker of disease activity for chronic inflammatory demyelinating polyneuropathy (CIDP). METHODS By using specific lectins for sialylation, galactosylation and agalactosylation, lectin-enzyme assay and lectin blotting with pretreatment of IgG degradating enzyme of Streptococcus pyogenes were performed to compare the glycosylation levels of serum IgG-Fc (1) between patients of untreated CIDP (n=107) and normal control subjects (n=27), (2) among patients with untreated CIDP of different clinical severities and (3) before and after IVIG treatment of patients with CIDP (n=12). RESULTS Sialylation and galactosylation of IgG-Fc were significantly reduced in patients with CIDP than normal control subjects (p=0.003 and 0.033, respectively), whereas agalactosylation was increased in CIDP (p=0.21). Ratios of sialylated/agalactosylated IgG-Fc levels were significantly reduced in CIDP (p<0.001) and inversely related to disease severity (p=0.044). After IVIG treatment, levels of sialylated IgG-Fc significantly increased (p=0.003). CONCLUSIONS Sialylation of IgG-Fc is reduced in CIDP. Its level correlated with clinical severity and increased after IVIG treatment. Sialylated as well as ratio of sialylated/agalactosylated IgG-Fc could be new measures to monitor the disease severity and treatment status in CIDP.
Collapse
Affiliation(s)
- Anna Hiu Yi Wong
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Yuki Fukami
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Makoto Sudo
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Norito Kokubun
- Department of Neurology, Dokkyo Medical University, Tochigi, Japan
| | - Shinsuke Hamada
- Department of Neurology, Hokuyukai Neurological Hospital, Sapporo, Japan
| | - Nobuhiro Yuki
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| |
Collapse
|
5
|
Devaux JJ, Miura Y, Fukami Y, Inoue T, Manso C, Belghazi M, Sekiguchi K, Kokubun N, Ichikawa H, Wong AHY, Yuki N. Neurofascin-155 IgG4 in chronic inflammatory demyelinating polyneuropathy. Neurology 2016; 86:800-7. [PMID: 26843559 DOI: 10.1212/wnl.0000000000002418] [Citation(s) in RCA: 179] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 10/01/2015] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE We report the clinical and serologic features of Japanese patients with chronic inflammatory demyelinating polyneuropathy (CIDP) displaying anti-neurofascin-155 (NF155) immunoglobulin G4 (IgG4) antibodies. METHODS In sera from 533 patients with CIDP, anti-NF155 IgG4 antibodies were detected by ELISA. Binding of IgG antibodies to central and peripheral nerves was tested. RESULTS Anti-NF155 IgG4 antibodies were identified in 38 patients (7%) with CIDP, but not in disease controls or normal participants. These patients were younger at onset as compared to 100 anti-NF155-negative patients with CIDP. Twenty-eight patients (74%) presented with sensory ataxia, 16 (42%) showed tremor, 5 (13%) presented with cerebellar ataxia associated with nystagmus, 3 (8%) had demyelinating lesions in the CNS, and 20 of 25 (80%) had poor response to IV immunoglobulin. The clinical features of the antibody-positive patients were statistically more frequent as compared to negative patients with CIDP (n = 100). Anti-NF155 IgG antibodies targeted similarly central and peripheral paranodes. CONCLUSION Anti-NF155 IgG4 antibodies were associated with a subgroup of patients with CIDP showing a younger age at onset, ataxia, tremor, CNS demyelination, and a poor response to IV immunoglobulin. The autoantibodies may serve as a biomarker to improve patients' diagnosis and guide treatments.
Collapse
Affiliation(s)
- Jérôme J Devaux
- From Aix-Marseille Université (J.J.D., C.M., M.B.), CNRS, CRN2M-UMR 7286, Marseille, France; Departments of Medicine (Y.M., Y.F., T.I., A.H.Y.W., N.Y.) and Physiology (N.Y.), Yong Loo Lin School of Medicine, National University of Singapore; Brain and Mind Centre (N.Y.), University of Sydney, Australia; Division of Neurology (K.S.), Kobe University Graduate School of Medicine; Department of Neurology (N.K.), Dokkyo Medical University, Tochigi; and Department of Neurology (H.I.), Brain Nerve Center, Showa University Fujigaoka Hospital, Tokyo, Japan
| | - Yumako Miura
- From Aix-Marseille Université (J.J.D., C.M., M.B.), CNRS, CRN2M-UMR 7286, Marseille, France; Departments of Medicine (Y.M., Y.F., T.I., A.H.Y.W., N.Y.) and Physiology (N.Y.), Yong Loo Lin School of Medicine, National University of Singapore; Brain and Mind Centre (N.Y.), University of Sydney, Australia; Division of Neurology (K.S.), Kobe University Graduate School of Medicine; Department of Neurology (N.K.), Dokkyo Medical University, Tochigi; and Department of Neurology (H.I.), Brain Nerve Center, Showa University Fujigaoka Hospital, Tokyo, Japan
| | - Yuki Fukami
- From Aix-Marseille Université (J.J.D., C.M., M.B.), CNRS, CRN2M-UMR 7286, Marseille, France; Departments of Medicine (Y.M., Y.F., T.I., A.H.Y.W., N.Y.) and Physiology (N.Y.), Yong Loo Lin School of Medicine, National University of Singapore; Brain and Mind Centre (N.Y.), University of Sydney, Australia; Division of Neurology (K.S.), Kobe University Graduate School of Medicine; Department of Neurology (N.K.), Dokkyo Medical University, Tochigi; and Department of Neurology (H.I.), Brain Nerve Center, Showa University Fujigaoka Hospital, Tokyo, Japan
| | - Takayuki Inoue
- From Aix-Marseille Université (J.J.D., C.M., M.B.), CNRS, CRN2M-UMR 7286, Marseille, France; Departments of Medicine (Y.M., Y.F., T.I., A.H.Y.W., N.Y.) and Physiology (N.Y.), Yong Loo Lin School of Medicine, National University of Singapore; Brain and Mind Centre (N.Y.), University of Sydney, Australia; Division of Neurology (K.S.), Kobe University Graduate School of Medicine; Department of Neurology (N.K.), Dokkyo Medical University, Tochigi; and Department of Neurology (H.I.), Brain Nerve Center, Showa University Fujigaoka Hospital, Tokyo, Japan
| | - Constance Manso
- From Aix-Marseille Université (J.J.D., C.M., M.B.), CNRS, CRN2M-UMR 7286, Marseille, France; Departments of Medicine (Y.M., Y.F., T.I., A.H.Y.W., N.Y.) and Physiology (N.Y.), Yong Loo Lin School of Medicine, National University of Singapore; Brain and Mind Centre (N.Y.), University of Sydney, Australia; Division of Neurology (K.S.), Kobe University Graduate School of Medicine; Department of Neurology (N.K.), Dokkyo Medical University, Tochigi; and Department of Neurology (H.I.), Brain Nerve Center, Showa University Fujigaoka Hospital, Tokyo, Japan
| | - Maya Belghazi
- From Aix-Marseille Université (J.J.D., C.M., M.B.), CNRS, CRN2M-UMR 7286, Marseille, France; Departments of Medicine (Y.M., Y.F., T.I., A.H.Y.W., N.Y.) and Physiology (N.Y.), Yong Loo Lin School of Medicine, National University of Singapore; Brain and Mind Centre (N.Y.), University of Sydney, Australia; Division of Neurology (K.S.), Kobe University Graduate School of Medicine; Department of Neurology (N.K.), Dokkyo Medical University, Tochigi; and Department of Neurology (H.I.), Brain Nerve Center, Showa University Fujigaoka Hospital, Tokyo, Japan
| | - Kenji Sekiguchi
- From Aix-Marseille Université (J.J.D., C.M., M.B.), CNRS, CRN2M-UMR 7286, Marseille, France; Departments of Medicine (Y.M., Y.F., T.I., A.H.Y.W., N.Y.) and Physiology (N.Y.), Yong Loo Lin School of Medicine, National University of Singapore; Brain and Mind Centre (N.Y.), University of Sydney, Australia; Division of Neurology (K.S.), Kobe University Graduate School of Medicine; Department of Neurology (N.K.), Dokkyo Medical University, Tochigi; and Department of Neurology (H.I.), Brain Nerve Center, Showa University Fujigaoka Hospital, Tokyo, Japan
| | - Norito Kokubun
- From Aix-Marseille Université (J.J.D., C.M., M.B.), CNRS, CRN2M-UMR 7286, Marseille, France; Departments of Medicine (Y.M., Y.F., T.I., A.H.Y.W., N.Y.) and Physiology (N.Y.), Yong Loo Lin School of Medicine, National University of Singapore; Brain and Mind Centre (N.Y.), University of Sydney, Australia; Division of Neurology (K.S.), Kobe University Graduate School of Medicine; Department of Neurology (N.K.), Dokkyo Medical University, Tochigi; and Department of Neurology (H.I.), Brain Nerve Center, Showa University Fujigaoka Hospital, Tokyo, Japan
| | - Hiroo Ichikawa
- From Aix-Marseille Université (J.J.D., C.M., M.B.), CNRS, CRN2M-UMR 7286, Marseille, France; Departments of Medicine (Y.M., Y.F., T.I., A.H.Y.W., N.Y.) and Physiology (N.Y.), Yong Loo Lin School of Medicine, National University of Singapore; Brain and Mind Centre (N.Y.), University of Sydney, Australia; Division of Neurology (K.S.), Kobe University Graduate School of Medicine; Department of Neurology (N.K.), Dokkyo Medical University, Tochigi; and Department of Neurology (H.I.), Brain Nerve Center, Showa University Fujigaoka Hospital, Tokyo, Japan
| | - Anna Hiu Yi Wong
- From Aix-Marseille Université (J.J.D., C.M., M.B.), CNRS, CRN2M-UMR 7286, Marseille, France; Departments of Medicine (Y.M., Y.F., T.I., A.H.Y.W., N.Y.) and Physiology (N.Y.), Yong Loo Lin School of Medicine, National University of Singapore; Brain and Mind Centre (N.Y.), University of Sydney, Australia; Division of Neurology (K.S.), Kobe University Graduate School of Medicine; Department of Neurology (N.K.), Dokkyo Medical University, Tochigi; and Department of Neurology (H.I.), Brain Nerve Center, Showa University Fujigaoka Hospital, Tokyo, Japan
| | - Nobuhiro Yuki
- From Aix-Marseille Université (J.J.D., C.M., M.B.), CNRS, CRN2M-UMR 7286, Marseille, France; Departments of Medicine (Y.M., Y.F., T.I., A.H.Y.W., N.Y.) and Physiology (N.Y.), Yong Loo Lin School of Medicine, National University of Singapore; Brain and Mind Centre (N.Y.), University of Sydney, Australia; Division of Neurology (K.S.), Kobe University Graduate School of Medicine; Department of Neurology (N.K.), Dokkyo Medical University, Tochigi; and Department of Neurology (H.I.), Brain Nerve Center, Showa University Fujigaoka Hospital, Tokyo, Japan.
| |
Collapse
|
6
|
Fukami Y, Wong AHY, Funakoshi K, Safri AY, Shahrizaila N, Yuki N. Anti-GQ1b antibody syndrome: anti-ganglioside complex reactivity determines clinical spectrum. Eur J Neurol 2015; 23:320-6. [PMID: 26176883 DOI: 10.1111/ene.12769] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 04/27/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND PURPOSE Anti-GQ1b antibodies have been found in patients with Miller Fisher syndrome as well as its related conditions. Our aim was to identify the mechanism by which autoantibodies produce various clinical presentations in 'anti-GQ1b antibody syndrome'. METHODS Immunoglobulin G antibodies to ganglioside complex (GSC) of GQ1b or GT1a with GM1, GD1a, GD1b or GT1b were tested in sera from patients with anti-GQ1b (n = 708) or anti-GT1a (n = 696) IgG antibodies. Optical densities of the single anti-GQ1b or anti-GT1a antibodies were used as reference (100%), and those of anti-GSC antibodies were expressed in percentages to reference. The relationships between anti-GSC antibody reactivity and the corresponding clinical features were assessed by multivariate logistic regression analysis. RESULTS Ophthalmoplegia and hypersomnolence were significantly associated with complex-attenuated anti-GQ1b and anti-GT1a antibodies. Ataxia was associated with GD1b- and GT1b-enhanced anti-GQ1b antibodies or GM1-enhanced anti-GT1a antibodies. Bulbar palsy was associated with GT1b-enhanced anti-GQ1b antibodies. Neck weakness was associated with GD1a-enhanced anti-GQ1b antibodies. Arm weakness was associated with GD1b-enhanced anti-GQ1b and GD1a-enhanced anti-GT1a antibodies. Leg weakness was associated with GD1a-enhanced anti-GQ1b and anti-GT1a antibodies. CONCLUSIONS Differences in fine specificity of anti-GQ1b antibodies are associated with clinical features, possibly due to the different expression of gangliosides in different parts of the nervous system.
Collapse
Affiliation(s)
- Y Fukami
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - A H Y Wong
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - K Funakoshi
- Department of Neurology, Dokkyo Medical University, Tochigi, Japan
| | - A Y Safri
- Department of Neurology, University of Indonesia, Jakarta, Indonesia
| | - N Shahrizaila
- Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - N Yuki
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| |
Collapse
|
7
|
Wong AHY, Yuki N. Guillain-Barré syndrome: advances in pathogenic understanding and diagnostic improvements. Expert Opin Orphan Drugs 2015. [DOI: 10.1517/21678707.2015.1043266] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
8
|
Wong AHY, Umapathi T, Nishimoto Y, Wang YZ, Chan YC, Yuki N. Cytoalbuminologic dissociation in Asian patients with Guillain-Barré and Miller Fisher syndromes. J Peripher Nerv Syst 2015; 20:47-51. [DOI: 10.1111/jns.12104] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Revised: 01/21/2015] [Accepted: 01/22/2015] [Indexed: 11/27/2022]
Affiliation(s)
| | | | | | - Yu Zhong Wang
- Department of Neurology; Affiliated Hospital of Jining Medical College; Shandong People's Republic of China
| | - Yee Cheun Chan
- Division of Neurology, University Medicine Cluster; National University Hospital; Singapore
| | - Nobuhiro Yuki
- Departments of Medicine and Physiology, Yong Loo Lin School of Medicine; National University of Singapore; Singapore
| |
Collapse
|
9
|
Miura Y, Devaux JJ, Fukami Y, Manso C, Belghazi M, Wong AHY, Yuki N. Contactin 1 IgG4 associates to chronic inflammatory demyelinating polyneuropathy with sensory ataxia. Brain 2015; 138:1484-91. [PMID: 25808373 DOI: 10.1093/brain/awv054] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [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: 12/15/2014] [Accepted: 01/10/2015] [Indexed: 11/12/2022] Open
Abstract
A Spanish group recently reported that four patients with chronic inflammatory demyelinating polyneuropathy carrying IgG4 autoantibodies against contactin 1 showed aggressive symptom onset and poor response to intravenous immunoglobulin. We aimed to describe the clinical and serological features of Japanese chronic inflammatory demyelinating polyneuropathy patients displaying the anti-contactin 1 antibodies. Thirteen of 533 (2.4%) patients with chronic inflammatory demyelinating polyneuropathy had anti-contactin 1 IgG4 whereas neither patients from disease or normal control subjects did (P = 0.02). Three of 13 (23%) patients showed subacute symptom onset, but all of the patients presented with sensory ataxia. Six of 10 (60%) anti-contactin 1 antibody-positive patients had poor response to intravenous immunoglobulin, whereas 8 of 11 (73%) antibody-positive patients had good response to corticosteroids. Anti-contactin 1 IgG4 antibodies are a possible biomarker to guide treatment option.
Collapse
Affiliation(s)
- Yumako Miura
- 1 Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Jérôme J Devaux
- 2 Aix-Marseille Université, CNRS, CRN2M-UMR 7286, Marseille, France 1 Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Yuki Fukami
- 1 Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Constance Manso
- 2 Aix-Marseille Université, CNRS, CRN2M-UMR 7286, Marseille, France
| | - Maya Belghazi
- 2 Aix-Marseille Université, CNRS, CRN2M-UMR 7286, Marseille, France
| | - Anna Hiu Yi Wong
- 1 Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Nobuhiro Yuki
- 1 Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 3 Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | | |
Collapse
|
10
|
Yi Wong AH, Yuki N. Miller Fisher syndrome is a nodo-paranodopathy, but not a myelinopathy. Future Neurology 2015. [DOI: 10.2217/fnl.14.61] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
ABSTRACT Miller Fisher syndrome, characterized by ophthalmoplegia, ataxia and areflexia, is a variant of Guillain–Barré syndrome. There have been controversies over the electrophysiological studies of Miller Fisher syndrome, as both demyelinating and axonal changes have been reported. In recent years, reversible conduction failure has been reported in patients with Miller Fisher syndrome with the use of serial nerve conduction studies. The similarity between Miller Fisher syndrome and axonal Guillain–Barré syndrome has led to the suggestion of a common autoimmune mechanism at the nodes and paranodes.
Collapse
Affiliation(s)
- Anna Hiu Yi Wong
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Nobuhiro Yuki
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| |
Collapse
|
11
|
Wong AHY, Umapathi T, Shahrizaila N, Chan YC, Kokubun N, Fong MK, Chu YP, Lau PK, Yuki N. The value of comparing mortality of Guillain-Barré syndrome across different regions. J Neurol Sci 2014; 344:60-2. [PMID: 24993467 DOI: 10.1016/j.jns.2014.06.021] [Citation(s) in RCA: 23] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 06/04/2014] [Accepted: 06/11/2014] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To study the clinical profile of Guillain-Barré syndrome (GBS) patients who died in 4 Asian countries in order to understand factors underlying any variation in mortality. METHODS Retrospectively reviewed medical records of GBS patients who died in 7 hospitals from 4 Asian countries between 2001 and 2012. Baseline characteristics, timing and causes of death were recorded. RESULTS A total of 16 out of 261 GBS patients died. The overall mortality rate was 6%, with a range of 0 to 13%. The leading causes of death were respiratory infections, followed by myocardial infarction. The median age of our patients was 77 years. Half of the patients required mechanical ventilation and almost all had significant concomitant illnesses. A disproportionate number of patients in the Hong Kong cohort died (13%). Patients with advanced age, fewer antecedent respiratory infections and need for mechanical ventilation were at most risk. Most deaths occurred during the plateau phase of GBS and on the general ward after having initially received intensive care. CONCLUSIONS There is considerable variability in mortality of GBS among different Asian cohorts. Although the risks factors for mortality were similar to Western cohorts, the timing and site of death differed. This allows specific measures to be implemented to improve GBS care in countries with higher mortality.
Collapse
Affiliation(s)
- A H Y Wong
- Department of Medicine, Queen Elizabeth Hospital, Hong Kong Special Administrative Region
| | - T Umapathi
- Department of Neurology, National Neuroscience Institute, Singapore
| | - N Shahrizaila
- Division of Neurology, Department of Medicine, University of Malaya, Malaysia
| | - Y C Chan
- Divison of Neurology, University Medicine Cluster, National University Hospital, Singapore
| | - N Kokubun
- Department of Neurology, Dokkyo Medical University, Japan
| | - M K Fong
- Department of Medicine and Geriatrics, Princess Margaret Hospital, Hong Kong Special Administrative Region
| | - Y P Chu
- Department of Medicine and Geriatrics, Princess Margaret Hospital, Hong Kong Special Administrative Region
| | - P K Lau
- Department of Medicine and Geriatrics, Caritas Medical Center, Hong Kong Special Administrative Region
| | - N Yuki
- Departments of Medicine and Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
| |
Collapse
|
12
|
Wong AHY, Wilder-Smith E, Yuki N. Letter corresponding to the article ‘Insights into antibody-associated encephalitis’ by Dr Merwick et al. J Neurol Sci 2014; 341:172. [DOI: 10.1016/j.jns.2014.03.037] [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] [Received: 02/06/2014] [Revised: 03/15/2014] [Accepted: 03/18/2014] [Indexed: 11/28/2022]
|
13
|
Hu XT, Zhang FB, Fan YC, Shu XS, Wong AHY, Zhou W, Shi QL, Tang HM, Fu L, Guan XY, Rha SY, Tao Q, He C. Phospholipase C delta 1 is a novel 3p22.3 tumor suppressor involved in cytoskeleton organization, with its epigenetic silencing correlated with high-stage gastric cancer. Oncogene 2009; 28:2466-75. [PMID: 19448674 DOI: 10.1038/onc.2009.92] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Located at the important tumor suppressor locus, 3p22, PLCD1 encodes an enzyme that mediates regulatory signaling of energy metabolism, calcium homeostasis and intracellular movements. We identified PLCD1 as a downregulated gene in aerodigestive carcinomas through expression profiling and epigenetic characterization. We found that PLCD1 was expressed in all normal adult tissues but low or silenced in 84% (16/19) gastric cancer cell lines, well correlated with its CpG island (CGI) methylation status. Methylation was further detected in 62% (61/98) gastric primary tumors, but none of normal gastric mucosa tissues. PLCD1 methylation was significantly correlated with tumor high stage. Detailed methylation analysis of 37 CpG sites at the PLCD1 CGI by bisulfite genomic sequencing confirmed its methylation. PLCD1 silencing could be reversed by pharmacological demethylation with 5-aza-2'-deoxycytidine, indicating a direct epigenetic silencing. Ectopic expression of PLCD1 in silenced gastric tumor cells dramatically inhibited their clonogenicity and migration, possibly through downregulating MMP7 expression and hampering the reorganization of cytoskeleton through cofilin inactivation by phosphorylation. Thus, epigenetic inactivation of PLCD1 is common and tumor-specific in gastric cancer, and PLCD1 acts as a functional tumor suppressor involved in gastric carcinogenesis.
Collapse
Affiliation(s)
- X-T Hu
- Biomedical Research Center, Sir Run Run Shaw Hospital, Zhejiang University and Key Laboratory of Biotherapy of Zhejiang Province, Hangzhou, China
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Ying J, Poon FF, Yu J, Geng H, Wong AHY, Qiu GH, Goh HK, Rha SY, Tian L, Chan ATC, Sung JJY, Tao Q. DLEC1 is a functional 3p22.3 tumour suppressor silenced by promoter CpG methylation in colon and gastric cancers. Br J Cancer 2009; 100:663-9. [PMID: 19156137 PMCID: PMC2653732 DOI: 10.1038/sj.bjc.6604888] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [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] [Indexed: 12/31/2022] Open
Abstract
Promoter CpG methylation of tumour suppressor genes (TSGs) is an epigenetic biomarker for TSG identification and molecular diagnosis. We screened genome wide for novel methylated genes through methylation subtraction of a genetic demethylation model of colon cancer (double knockout of DNMT1 and DNMT3B in HCT116) and identified DLEC1 (Deleted in lung and oesophageal cancer 1), a major 3p22.3 TSG, as one of the methylated targets. We further found that DLEC1 was downregulated or silenced in most colorectal and gastric cell lines due to promoter methylation, whereas broadly expressed in normal tissues including colon and stomach, and unmethylated in expressing cell lines and immortalised normal colon epithelial cells. DLEC1 expression was reactivated through pharmacologic or genetic demethylation, indicating a DNMT1/DNMT3B-mediated methylation silencing. Aberrant methylation was further detected in primary colorectal (10 out of 34, 29%) and gastric tumours (30 out of 89, 34%), but seldom in paired normal colon (0 out of 17) and gastric (1 out of 20, 5%) samples. No correlation between DLEC1 methylation and clinical parameters of gastric cancers was found. Ectopic expression of DLEC1 in silenced HCT116 and MKN45 cells strongly inhibited their clonogenicity. Thus, DLEC1 is a functional tumour suppressor, being frequently silenced by epigenetic mechanism in gastrointestinal tumours.
Collapse
Affiliation(s)
- J Ying
- Department of Clinical Oncology, State Key Laboratory in Oncology in South China, Sir YK Pao Center for Cancer, Hong Kong Cancer Institute, Chinese University of Hong Kong, Shatin, Hong Kong, China.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Ying J, Li H, Cui Y, Wong AHY, Langford C, Tao Q. Epigenetic disruption of two proapoptotic genes MAPK10/JNK3 and PTPN13/FAP-1 in multiple lymphomas and carcinomas through hypermethylation of a common bidirectional promoter. Leukemia 2006; 20:1173-5. [PMID: 16572203 DOI: 10.1038/sj.leu.2404193] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
16
|
Ke L, Wong TWY, Wong AHY, Wong YS, Tam NFY. Negative effects of humic acid addition on phytoremediation of pyrene-contaminated sediments by mangrove seedlings. Chemosphere 2003; 52:1581-1591. [PMID: 12867191 DOI: 10.1016/s0045-6535(03)00498-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Vegetated (with Kandelia candel seedlings) and non-vegetated mangrove microcosms were employed to remove pyrene from contaminated sediments, and the effects of adding 6.7% humic acid (HA) on such removal were investigated. At the end of 6-month treatment, residual pyrene concentrations in surface sediments (0-2 cm) of the contaminated microcosms reduced from an initial 5.82 to 0.63 microg g(-1) dw, and the reduction was less in HA amended microcosms with the residual pyrene concentration remained at 3.12 microg g(-1) dw. The pyrene removal percentages in microcosms with HA amendment were 29% for surface aerobic sediments and 41% for bottom (anaerobic) sediments, while the respective removal percentages in microcosms without HA amendment were 89% (surface sediments) and 53% (bottom sediments). Microcosms planted with K. candel seedlings had a significantly higher pyrene removal when compared to the non-vegetated ones, and the average removal percentages were 70.9% and 61.4%, respectively. However, when humic acid was added, no significant difference was found between vegetated and non-vegetated microcosms in pyrene removal, both had less than 40% removal, probably because plant growth in humic acid amended contaminated microcosms, in terms of total biomass, was reduced by 50%. Roots of K. candel could accumulate pyrene from contaminated microcosms, and pyrene concentrations in roots harvested from microcosms with and without humic acid addition were 6.01 and 3.46 microg g(-1) dw, respectively. These results suggest that the addition of HA to contaminated sediments decreased the mangrove microcosm's ability to remove pyrene as pyrene was more tightly bound to the organic matter and plant growth was reduced.
Collapse
Affiliation(s)
- L Ke
- Department of Biology and Chemistry, Centre for Coastal Pollution and Conservation, City University of Hong Kong, Hong Kong SAR, Kowloon, Hong Kong
| | | | | | | | | |
Collapse
|