Clinical manifestations of peripheral nervous system involvement in human chronic chagas disease

We conducted a clinical and electromyographical study in patients with Chagas' disease in the indeterminate or chronic stages of the illness. Altogether 841 patients were examined. Only 511 were admitted within the protocol; the remainder patients were rejected because they showed other causes able to damage the nervous system. Fifty two (10.17%) out of the 511 patients showed signs and symptoms of peripheral nervous system involvement in the form of sensory impairment and diminished tendon jerks suggesting the presence of neuropathy. Forty five of them were submitted to a conventional electromyographical examination. Fifteen of mem showed normal results, while the remainder 30 disclosed a reduced interference pattern, being most of the remaining motor unit potentials fragmented or poliphasic, reduced sensory and motor conduction velocities and diminished amplitude of the sensory action potential. The findings suggest that some chagasic patients in the indeterminate or chronic stages of the disease may develop a clinical mild sensory-motor peripheral neuropathy.

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Electromyographycal findings in human chronic Chaga's disease

Arquivos de Neuro-Psiquiatria ◽

10.1590/s0004-282x1978000400004 ◽

1978 ◽

Vol 36 (4) ◽

pp. 316-318 ◽

Cited By ~ 10

Author(s):

M. A. Pagano ◽

G. G. Aristimuño ◽

Susana Basso ◽

A. Colombi ◽

R. E. P. Sica

Keyword(s):

Nervous System ◽

Chagas Disease ◽

Clinical Features ◽

Lower Limbs ◽

System Involvement ◽

Chronic Denervation ◽

Chronic Chagas Disease

An electromyographical investigation of 80 patients with chronic Chagas' disease was made. It was found that 79% of the studied patients had EMG manifestations of old and chronic denervation of the upper and lower limbs without clinical features of nervous system involvement.

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Central and peripheral nervous system involvement by COVID-19: A systematic review of the pathophysiology, clinical manifestations, neuropathology, neuroimaging, electrophysiology, and cerebrospinal fluid findings

10.21203/rs.3.rs-105950/v1 ◽

2020 ◽

Author(s):

Juan I. Guerrero ◽

Luis A. Barragán ◽

Juan D. Martínez ◽

Juan P. Montoya ◽

Alejandra Peña ◽

...

Keyword(s):

Systematic Review ◽

Cerebrospinal Fluid ◽

Nervous System ◽

Peripheral Nervous System ◽

Evidence Synthesis ◽

Clinical Manifestations ◽

Neurological Impairment ◽

Neurological Involvement ◽

Categorical Analysis ◽

System Involvement

Abstract Background: SARS-CoV-2 can affect the human brain and other neurological structures. An increasing number of publications report neurological manifestations in patients with COVID-19. However, no studies have comprehensively reviewed the clinical and paraclinical characteristics of the central and peripheral nervous system's involvement in these patients. This study aimed to describe the features of the central and peripheral nervous system involvement by COVID-19 in terms of pathophysiology, clinical manifestations, neuropathology, neuroimaging, electrophysiology, and cerebrospinal fluid findings.Methods: We conducted a comprehensive systematic review of all the original studies reporting patients with neurological involvement by COVID-19, from December 2019 to June 2020, without language restriction. We excluded studies with animal subjects, studies not related to the nervous system, and opinion articles. Data analysis combined descriptive measures, frequency measures, central tendency measures, and dispersion measures for all studies reporting neurological conditions and abnormal ancillary tests in patients with confirmed COVID-19.Results: A total of 143 observational and descriptive studies reported central and peripheral nervous system involvement by COVID-19 in 10723 patients. Fifty-one studies described pathophysiologic mechanisms of neurological involvement by COVID-19, 119 focused on clinical manifestations, 4 described neuropathology findings, 62 described neuroimaging findings, 28 electrophysiology findings, and 60 studies reported cerebrospinal fluid results. The reviewed studies reflect a significant prevalence of the nervous system's involvement in patients with COVID-19, ranging from 22.5% to 36.4% among different studies, without mortality rates explicitly associated with neurological involvement by SARS-COV-2. We thoroughly describe the clinical and paraclinical characteristics of neurological involvement in these patients. Conclusions: Our evidence synthesis led to a categorical analysis of the central and peripheral involvement by COVID-19 and provided a comprehensive explanation of the reported pathophysiological mechanisms by which SARS-CoV-2 infection may cause neurological impairment. International collaborative efforts and exhaustive neurological registries will enhance the translational knowledge of COVID-19's CNS and PNS involvement and generate strategies for therapeutic decision-making.Registration: This review is registered in PROSPERO (CRD42020193140), July 24, 2020.

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A Sequential Study of the Peripheral Nervous System Involvement in Experimental Chagas' Disease

American Journal of Tropical Medicine and Hygiene ◽

10.4269/ajtmh.1989.41.539 ◽

1989 ◽

Vol 41 (5) ◽

pp. 539-547 ◽

Cited By ~ 23

Author(s):

A. Losavio ◽

R. E. P. Sica ◽

M. C. Jones ◽

O. P. Sanz ◽

G. Mirkin ◽

...

Keyword(s):

Nervous System ◽

Peripheral Nervous System ◽

Chagas Disease ◽

System Involvement ◽

Sequential Study

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Central and peripheral nervous system involvement by COVID-19: a systematic review of the pathophysiology, clinical manifestations, neuropathology, neuroimaging, electrophysiology, and cerebrospinal fluid findings

BMC Infectious Diseases ◽

10.1186/s12879-021-06185-6 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Juan I. Guerrero ◽

Luis A. Barragán ◽

Juan D. Martínez ◽

Juan P. Montoya ◽

Alejandra Peña ◽

...

Keyword(s):

Systematic Review ◽

Cerebrospinal Fluid ◽

Nervous System ◽

Peripheral Nervous System ◽

Evidence Synthesis ◽

Clinical Manifestations ◽

Neurological Impairment ◽

Neurological Involvement ◽

Categorical Analysis ◽

System Involvement

Abstract Background SARS-CoV-2 can affect the human brain and other neurological structures. An increasing number of publications report neurological manifestations in patients with COVID-19. However, no studies have comprehensively reviewed the clinical and paraclinical characteristics of the central and peripheral nervous system’s involvement in these patients. This study aimed to describe the features of the central and peripheral nervous system involvement by COVID-19 in terms of pathophysiology, clinical manifestations, neuropathology, neuroimaging, electrophysiology, and cerebrospinal fluid findings. Methods We conducted a comprehensive systematic review of all the original studies reporting patients with neurological involvement by COVID-19, from December 2019 to June 2020, without language restriction. We excluded studies with animal subjects, studies not related to the nervous system, and opinion articles. Data analysis combined descriptive measures, frequency measures, central tendency measures, and dispersion measures for all studies reporting neurological conditions and abnormal ancillary tests in patients with confirmed COVID-19. Results A total of 143 observational and descriptive studies reported central and peripheral nervous system involvement by COVID-19 in 10,723 patients. Fifty-one studies described pathophysiologic mechanisms of neurological involvement by COVID-19, 119 focused on clinical manifestations, 4 described neuropathology findings, 62 described neuroimaging findings, 28 electrophysiology findings, and 60 studies reported cerebrospinal fluid results. The reviewed studies reflect a significant prevalence of the nervous system’s involvement in patients with COVID-19, ranging from 22.5 to 36.4% among different studies, without mortality rates explicitly associated with neurological involvement by SARS-CoV-2. We thoroughly describe the clinical and paraclinical characteristics of neurological involvement in these patients. Conclusions Our evidence synthesis led to a categorical analysis of the central and peripheral neurological involvement by COVID-19 and provided a comprehensive explanation of the reported pathophysiological mechanisms by which SARS-CoV-2 infection may cause neurological impairment. International collaborative efforts and exhaustive neurological registries will enhance the translational knowledge of COVID-19’s central and peripheral neurological involvement and generate therapeutic decision-making strategies. Registration This review was registered in PROSPERO 2020 CRD42020193140 Available from: https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42020193140

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Neurological Problems in COVID-19 Pandemic

Annals of the National Academy of Medical Sciences (India) ◽

10.1055/s-0040-1717833 ◽

2020 ◽

Vol 56 (04) ◽

pp. 191-196

Author(s):

Shiv Kumar Saini ◽

Kuljeet Singh Anand ◽

Abhishek Juneja ◽

Rakesh Kumar Mahajan

Keyword(s):

Nervous System ◽

Peripheral Nervous System ◽

Clinical Manifestations ◽

Neurological Complications ◽

Health Concern ◽

Global Public Health ◽

System Involvement ◽

Organ Systems ◽

Severe Acute Respiratory Infection ◽

Systemic Factors

AbstractCoronavirus disease 2019 (COVID-19) is a potentially severe acute respiratory infection caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). This outbreak, which emerged in Wuhan city, rapidly spread throughout China and has now become a global public health concern. SARS-CoV-2 is a highly pathogenic and transmissible virus. Common clinical manifestations of COVID-19 include fever, dry cough, shortness of breath, muscle ache, headache, and confusion. Currently, there is no confirmed effective therapeutic strategy for COVID-19 because the pathological mechanism is poorly understood. In addition to the respiratory system involvement, recent evidence has shown that SARS-CoV-2 can affect other organ systems including nervous, vascular, digestive, and urinary system. Various neurological complications have also been described in various studies. Nervous system involvement in the case of SARS-CoV-2 is explained by direct neuro invasion, immune mechanism, and other systemic factors. Neurological complications due to SARS-CoV-2 include both central and peripheral nervous system involvement. Central nervous system complications range from mild headache to seizures, encephalitis, myelitis, and acute cerebrovascular accidents. Peripheral nervous system complications range from vague muscle pains to Guillain–Barré syndrome. This article briefly discusses the various neurological and mental health issues related to COVID-19.

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