|Year : 2022 | Volume
| Issue : 2 | Page : 203-206
Guillain-barre syndrome and antibodies to arboviruses (Dengue, Chikungunya and Japanese Encephalitis): A prospective study of 95 patients form a tertiary care centre in Southern India
Hariswar Pari1, S Deepak Amalnath1, Rahul Dhodapkar2
1 Department of Medicine, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
2 Department of Microbiology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
|Date of Submission||26-Jun-2021|
|Date of Acceptance||06-Aug-2021|
|Date of Web Publication||22-Oct-2021|
S Deepak Amalnath
Department of Medicine, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry - 605 006
Source of Support: None, Conflict of Interest: None
| Abstract|| |
Objective: The aim of this study was to detect the presence of IgM antibodies against dengue (DEN), chikungunya (CHIK) and Japanese encephalitis (JE) in the serum and CSF of patients with Guillaine-Barre syndrome (GBS). Methods: GBS patients (>12 years of age) were included after informed consent. Data on history, clinical manifestations, treatment details, and outcome were collected. Serum and CSF were tested for IgM antibodies against DEN, CHIK, and JE. Results: From April 2018 to December 2019, 95 patients were included in this study. Anti-arboviral IgM antibodies were detected in 30 patients (31.5%) (CSF 11, serum 13, both CSF and serum 6). Serum IgM antibody was present in 19 patients (JE 8, DEN 5, CHIK 2, more than 1 virus 4). Of the 66 patients who underwent CSF studies, antibodies were present in 17 (CHIK 14, DEN 1, more than 1 virus 2). Antibody positivity did not affect the outcome of GBS. Conclusion: One-third of the GBS patients had evidence of recent infection by arboviruses. This suggests that DEN, CHIK, and JE could be the inciting event for GBS in endemic regions.
Keywords: Arboviruses, Chikungunya, Dengue, Guillain-Barre syndrome, Japanese Encephalitis
|How to cite this article:|
Pari H, Amalnath S D, Dhodapkar R. Guillain-barre syndrome and antibodies to arboviruses (Dengue, Chikungunya and Japanese Encephalitis): A prospective study of 95 patients form a tertiary care centre in Southern India. Ann Indian Acad Neurol 2022;25:203-6
|How to cite this URL:|
Pari H, Amalnath S D, Dhodapkar R. Guillain-barre syndrome and antibodies to arboviruses (Dengue, Chikungunya and Japanese Encephalitis): A prospective study of 95 patients form a tertiary care centre in Southern India. Ann Indian Acad Neurol [serial online] 2022 [cited 2022 Aug 8];25:203-6. Available from: https://www.annalsofian.org/text.asp?2022/25/2/203/328987
| Introduction|| |
Guillaine-Barre syndrome is an immune-mediated polyradiculoneuropathy that classically presents with areflexic ascending paralysis, sometimes causing respiratory muscle weakness. Following an infection, the antibodies against the pathogen cross react with the gangliosides on the myelin leading to demyelination (rarely axonal damage). The organisms that cause the initial infection include Campylobacter jejuni, influenza, HIV, and recently Zika.
Arboviruses are viruses that are transmitted by insects. The important ones include dengue, chikungunya, Japanese encephalitis, and Zika. Though JE is an important cause of encephalitis and neurological complications have been reported with DEN and CHIK, their role in triggering GBS has not been well documented. Zika has been implicated in GBS by studies from French Polynesia and South America. However subsequent studies in South America showed that the Zika outbreak occurred along with DEN and CHIK coinfections and that co-existing CHIK infection increased the risk of GBS due to Zika.
Since GBS is an immune-mediated condition, the virus may not be detected at the onset of GBS, except Zika which can be detected in the urine. Hence, detection of IgM antibodies, especially in the CSF, has been taken as evidence to show that the arbovirus is triggering GBS.
GBS following DEN, CHIK, and JE are mostly restricted to case reports/series or small retrospective studies. Though India has a high burden of arboviral infections, we could not find any study that looked into the association of arboviruses and GBS. Hence this study was carried out to determine the presence of IgM anti-arboviral antibodies in GBS patients.
| Materials and Methods|| |
This was a prospective study done from April 2018 to December 2019 in the department of medicine, at a tertiary care center in southern India. Institute ethics committee approval was obtained. All consecutive patients (>12 years), diagnosed as GBS (as per Brighton Criteria) were included. Those who were treated elsewhere and referred were excluded.
Data on demographic profile, symptoms, clinical findings, treatment details, and outcome at discharge were collected. Using Hadden criteria, patients were classified as AIDP, AMAN, AMSAN or Miller Fisher variants. CSF was analyzed for albumin cytological disassociation. Ethics approval obtained on 29/6/19.
Testing for arboviruses
Centrifuged serum and CSF were stored at -20 to -80 C. The following kits were used to detect IgM antibodies: IgM Capture ELISA (NIV, Pune, India) for DEN and CHIK, IgM Capture ELISA (MAC ELISA; InBios) for JE.
The independent variables analyzed were antiDEN positivity, antiCHIK positivity, antiJE positivity in serum or CSF, and type of GBS. The outcome variable was the presence or absence of a poor outcome. All the variables were analyzed by Fisher's exact test of statistical significance using the statistical package for the social sciences (SPSS) software, version 19.0 (IBM).
| Results|| |
A total of 95 patients (males-60, females- 35) were included in this study. The cases were evenly distributed across the year except for 2 peaks - January 2019 (n = 10) and September 2019 (n = 14).
45 (47%) patients gave history of infection preceding GBS (acute gastroenteritis-19, fever-19). No one had a confirmed diagnosis of recent arboviral infections.
Ascending type of motor weakness was the most common manifestation. Facial nerve involvement was present in 27 patients. The clinical and laboratory features are summarized in [Table 1].
Albumin cytological dissociation was present in 57 of the 66 patients (87%) who underwent lumbar puncture. Of the 87 patients who underwent NCS, 33 were classified as AIDP (38%).
Plasmapheresis was done in 47 patients, IVIg was given in 27 patients, and 10 patients received both Plasmapheresis and IVIg. The remaining 11 improved spontaneously. 26 patients required mechanical ventilation. 2 patients died and 8 patients had poor outcome (Modified Hughes score 3 and more) at the end of 3 months [Table 2].
Antibodies to arboviruses [Table 3]
IgM antibodies were detected in the serum and/or CSF in 30 patients (31.5%) (CSF -11, serum-13, both CSF and serum -6). 6 patients had antibodies to more than 1 virus (serum-4 patients and 2 in CSF). In the serum, anti JE was the most common, while anti-CHIK was most common in CSF.
Anti CHIK IgM was positive in 19 (serum -3, CSF- 16), anti-DEN IgM in 12 (serum- 9, CSF-3) and anti JE IgM in 12 (serum -11, CSF- 1)
19 serum samples were positive to anti-arboviral antibodies (JE-8, DEN-5, CHIK-2, DEN and JE-3, DEN and CHIK-1). Similarly, 17 CSF samples were positive for antibodies (CHIK-14, DEN-1, DEN and CHIK-1, DEN, CHIK and JE- 1)
6 patients had antibodies in serum and CSF. All 6 CSF were positive for CHIK while in the serum, JE – 4, CHIK -1 and DEN-1.
Clinical features of antibody-positive patients [Table 4]
Axonal pattern was more common than demyelination (20 and 8 respectively). 9 patients needed mechanical ventilation. There was no difference in the outcome as compared to those who tested negative for antibodies. There was no mortality in antibody-positive group.
| Discussion|| |
Even though DEN and CHIK have been responsible for large outbreaks in south Asia and South America, it was ZIKA that had revived interest in the neurological complications of arboviruses especially GBS. The first report of Zika causing GBS was from French Polynesia followed by South American countries. However, the Zika outbreaks of south America were later found to be associated with coexisting DEN and CHIK outbreaks, suggesting that GBS might not be only due to Zika but also to DEN and CHIK.
In a prospective study from northeast Brazil, of the 148 patients with neurological illness following presumed arboviral infections, 47 patients had GBS. Dual infection with CHIK and ZIka had more severe outcome than mono-infection. Similarly, in a study of 71 of GBS patients, from northern Brazil, Zika was present in 25, CHIK in 8, ZIKA plus CHIK in 14 and DEN in 1. The authors suggested that CHIK too is an important cause of GBS and coinfection with Zika might increase the severity of GBS. However, in a recent study of 97 patients from Mexico, Zika (8) and Dengue (4) were found to have a stronger association with GBS than CHIK (1).
Large nationwide surveys using IgG antibodies have shown high seroprevalence of DEN (48·7%) and CHIK (18·1%) in India and the rates are even higher in southern India (DEN-76·9%, CHIK -43·1%), especially in younger population. Despite such high prevalence, Indian data on the association of GBS and arboviral infections is very scarce.
CHIK and GBS
CHIK has been shown to cause multiple neurological complications, including GBS.
The first large study on neurological complications following CHIK was from the 2006 outbreak in Nagpur, western India. 49 of 300 confirmed CHIK patients developed neurological complications including 14 GBS patients (0.046%). All had AIDP variant and had recovered completely.
In the 2016 outbreak from Delhi, 42 of the 290 patients with confirmed CHIK infection developed neurological complications with 3 cases of GBS (0.01%).
In our study, antibodies to CHIK were present in 19 samples (CSF-16 and serum 3). Interestingly, of the 6 patients had antibodies in both serum and CSF, all 6 CSF were CHIK positive but only 1 serum was CHIK positive. This suggests that CHIK has a stronger association with GBS as compared to DEN and JE. This is similar to the studies from Brazil which have shown that along with ZIKA, CHIK is also an important risk factor for GBS.,,
Dengue and GBS
GBS is an uncommon complication of dengue. Most of the literature is restricted only to case reports/series. In our study 12 patients had IgM antibodies to Dengue (serum -9, CSF-3). In a study from Lucknow out of 26 patients with neurological manifestations due to Dengue, 3 were noted to have GBS. In a study from Malaysia, 19 out of 95 GBS patients had anti-dengue IgM antibody in the serum. Most of the patients had flu or diarrhea prior to GBS and none had established Dengue infection. In our study, none of the patients had documented Dengue or chikungunya, prior to GBS. This may be because most arboviral infections are asymptomatic or have mild nonspecific symptoms.
Japanese Encephalitis and GBS
Literature on GBS following JE is restricted to case reports. In our study, IgM anti-JE was present in 12 patients (11-serum, 1- CSF). In a recent prospective study from China, of 161 patients with JE, 47 were diagnosed to have GBS. All had IgM antibodies in serum and CSF while virus was isolated only in 1 patient. Most of the patients had AMAN/AMSAN on NCS. Uncommonly, the death rate was very high in this cohort (21 of 47, 44.6%). In our study, there was no mortality in the antibody-positive cohort.
Positivity to more than one arbovirus
6 patients had IgM antibodies to more than 1 virus. Also some had antibody to one arbovirus in serum but antibody to another virus in CSF. The following reasons might explain this phenomenon.
- There is a high degree of cross-reactivity among the arboviruses. Plaque Reduction Neutralizing Test (PRNT) is used to identify the specific virus against which the antibodies are produced. But it is cumbersome and not widely available.
- Acute infection by one arbovirus (Zika) can trigger anamnestic response leading to IgM antibodies against another arbovirus (Dengue) in a patient who would have had Dengue infection in the past.
- There can be more than 1 viral infection at the same time especially in highly endemic regions.
| Conclusion|| |
Approximately 30% of the GBS patients had IgM antibodies to DEN/CHIK and/or JE in the serum/CSF. This suggests that arboviral infections could be responsible for a significant number of GBS patients especially in high endemic countries like India.
Antibodies to Zika virus could not be studied due to delay in procuring the kit. CSF analysis was not done in all patients.
Financial support and sponsorship
Intramural grant from the institute (JIPMER).
Conflicts of interest
There are no conflicts of interest.
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[Table 1], [Table 2], [Table 3], [Table 4]