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Jung-Joon Sung

Seoul National University · Medicine

About the Lab

Professor Jung-Joon Sung's research lab focuses on understanding the pathophysiological mechanisms and clinical biomarkers in neurodegenerative diseases, particularly amyotrophic lateral sclerosis (ALS). The lab investigates systemic inflammatory markers such as the neutrophil-to-lymphocyte ratio (NLR), metabolic alterations like hypolipidemia, and the impact of hypoxia—both chronic intermittent and sustained—on disease progression in ALS models. Additionally, the lab explores electrophysiological and respiratory biomarkers, such as SIMUNIX and capnography, to improve early diagnosis and management of ALS. Their work bridges preclinical models with clinical applications to enhance patient outcomes.

ALSneutrophil-to-lymphocyte ratiohypoxiahypolipidemiacapnography

Research Overview

Papers
262
Total Citations
2,838
Papers (5y)
70
Primary Field
Medicine

Research Output Trend

Figures are computed from collected data and may differ slightly.

Publications per year (5y)
70total
2022
2023
2024
2025
2026
Citations per year (5y)
346total
20222023202420252026

Selected Papers

15
1
Article|67 citations·2020
High neutrophil-to-lymphocyte ratio predicts short survival duration in amyotrophic lateral sclerosis
Seok‐Jin Choi, Yoon‐Ho Hong, Sung‐Min Kim, Je-Young Shin, Young Ju Suh, Jung‐Joon Sung
SJR Q1Scientific ReportsOA

The present study aimed to investigate the prognostic importance of the neutrophil-to-lymphocyte ratio (NLR) in patients with amyotrophic lateral sclerosis (ALS). Among 322 patients diagnosed as having definite, probable, or possible ALS at a single tertiary hospital, 194 patients were included in the final analysis. Patients were divided into three groups (T1, T2, and T3) according to the tertile of their NLR. Survival rate was significantly lower in T3 compared to the other groups (log-rank te

NeurologyMedicine
2
Article|63 citations·2013
Potential Effect of S-Nitrosylated Protein Disulfide Isomerase on Mutant SOD1 Aggregation and Neuronal Cell Death in Amyotrophic Lateral Sclerosis
Gye Sun Jeon, Tomohiro Nakamura, Jeong-Seon Lee, Won-Jun Choi, Suk‐Won Ahn, Kwang‐Woo Lee, Jung‐Joon Sung, Stuart A. Lipton
SJR Q1Molecular Neurobiology
NeurologyMedicine
3
Article|63 citations·2011
Amyotrophic Lateral Sclerosis Is Associated with Hypolipidemia at the Presymptomatic Stage in Mice
Sung-Min Kim, Sung-Min Kim, Heejaung Kim, Jee-Eun Kim, Kyung Seok Park, Jung‐Joon Sung, Seung Hyun Kim, Seung Hyun Kim, Kwang Woo Lee
SJR Q1PLoS ONEOA

OBJECTIVE: To demonstrate that hypolipidemia is a typical feature of the mouse model of amyotrophic lateral sclerosis (ALS) and to assess the association between hypolipidemia and disease stage, dietary intake, and sex. METHODS: We compared daily dietary intake, body weight, and serumlipid and glucose levels in ALS mice and wild-type controls at different stages of the disease. FINDINGS: Total cholesterol low-density lipoprotein (LDL) and LDL/high-density lipoprotein (HDL) ratio were significant

NeurologyMedicine
4
Article|61 citations·2013
Intermittent Hypoxia Can Aggravate Motor Neuronal Loss and Cognitive Dysfunction in ALS Mice
Sung‐Min Kim, Sung-Min Kim, Heejaung Kim, Jeong-Seon Lee, Kyung Seok Park, Gye Sun Jeon, Jeeheun Shon, Suk-Won Ahn, Seung Hyun Kim, Seung Hyun Kim, Kyung Min Lee, Jung‐Joon Sung
SJR Q1PLoS ONEOA

BACKGROUND: Patients with ALS may be exposed to variable degrees of chronic intermittent hypoxia. However, all previous experimental studies on the effects of hypoxia in ALS have only used a sustained hypoxia model and it is possible that chronic intermittent hypoxia exerts effects via a different molecular mechanism from that of sustained hypoxia. No study has yet shown that hypoxia (either chronic intermittent or sustained) can affect the loss of motor neurons or cognitive function in an in vi

NeurologyMedicine
5
Article|58 citations·2011
Brain abnormalities in neuromyelitis optica
Jee‐Eun Kim, Sung‐Min Kim, Suk-Won Ahn, Byung Chan Lim, Jong‐Hee Chae, Yoon‐Ho Hong, Kyung Seok Park, Jung‐Joon Sung, Kwang Woo Lee
SJR Q1Journal of the Neurological Sciences
Pathology and Forensic MedicineMedicine
6
Article|40 citations·2015
Split-hand phenomenon in amyotrophic lateral sclerosis: A motor unit number index study
Dong‐Gun Kim, Yoon‐Ho Hong, Je-Young Shin, Kee Hong Park, Sung-Yeon Sohn, Kwang Woo Lee, Kyung Seok Park, Jung‐Joon Sung
SJR Q1Muscle & Nerve

SIMUNIX and SICMAP were useful in differentiating ALS patients from healthy controls. SIMUNIX appears to be a better electrophysiological marker than SICMAP for the split-hand sign of ALS. Muscle Nerve 53: 885-888, 2016.

NeurologyMedicine
7
Article|39 citations·2012
The neuroprotective effect of the GSK-3β inhibitor and influence on the extrinsic apoptosis in the ALS transgenic mice
Suk-Won Ahn, Jee‐Eun Kim, Kyung Seok Park, Won-Jun Choi, Yoon‐Ho Hong, Sung‐Min Kim, Seung Hyun Kim, Kwang Woo Lee, Jung‐Joon Sung
SJR Q1Journal of the Neurological Sciences
NeurologyMedicine
8
Article|39 citations·2011
Capnography for Assessing Nocturnal Hypoventilation and Predicting Compliance with Subsequent Noninvasive Ventilation in Patients with ALS
Sungmin Kim, Kyung Seok Park, Hyunwoo Nam, Suk-Won Ahn, Su‐Hyun Kim, Jung‐Joon Sung, Kwang Woo Lee
SJR Q1PLoS ONEOA

Capnography is an efficient tool for assessing nocturnal hypoventilation and predicting good compliance with subsequent NIV treatment of ALS patients, and may prove useful as an adjunctive tool for assessing the need for NIV treatment in these patients.

Endocrine and Autonomic SystemsNeuroscience
9
Article|32 citations·2006
Pyruvate slows disease progression in a G93A SOD1 mutant transgenic mouse model
Jongha Park, Yoon‐Ho Hong, Hyun‐Jung Kim, Sung‐Min Kim, Min-Jeong Kim, Kyung‐Seok Park, Jung‐Joon Sung, Kwang‐Woo Lee
SJR Q2Neuroscience Letters
NeurologyMedicine
10
Article|27 citations·2013
Factors Associated With the Time to Next Attack in Neuromyelitis Optica: Accelerated Failure Time Models With Random Effects
Sung-Min Kim, Jun‐Woo Park, Sun Hee Kim, Suyeon Park, Jee Young Kim, Jung‐Joon Sung, Kyung Seok Park, Kwang Woo Lee
SJR Q1PLoS ONEOA

The time to next attack in NMO can increase naturally in the later stages of the disease as the number of cumulative attacks increases. Nevertheless, both combined azathioprine treatment with continued oral prednisolone and rituximab treatment were also associated with a longer time to next attack, independently of the natural disease course of NMO.

Pathology and Forensic MedicineMedicine
11
Article|27 citations·2020
Dissociated leg muscle atrophy in amyotrophic lateral sclerosis/motor neuron disease: the ‘split-leg’ sign
Young Gi Min, Seok‐Jin Choi, Yoon‐Ho Hong, Sung‐Min Kim, Je-Young Shin, Jung‐Joon Sung
SJR Q1Scientific ReportsOA

Abstract Disproportionate muscle atrophy is a distinct phenomenon in amyotrophic lateral sclerosis (ALS); however, preferentially affected leg muscles remain unknown. We aimed to identify this split-leg phenomenon in ALS and determine its pathophysiology. Patients with ALS (n = 143), progressive muscular atrophy (PMA, n = 36), and age-matched healthy controls (HC, n = 53) were retrospectively identified from our motor neuron disease registry. We analyzed their disease duration, onset region, ALS

NeurologyMedicine
12
Article|27 citations·2011
Cerebrospinal fluid/serum gradient of IgG is associated with disability at acute attacks of neuromyelitis optica
Sung‐Min Kim, Patrick Waters, Angela Vincent, Min Jin Go, Kyung Seok Park, Jung‐Joon Sung, Kwang Woo Lee
SJR Q1Journal of Neurology
Pathology and Forensic MedicineMedicine
13
Article|26 citations·2002
Homocysteine induces oxidative cytotoxicity in Cu,Zn-superoxide dismutase mutant motor neuronal cell
Jung‐Joon Sung, Hyunjung Kim, Smi Choi‐Kwon, Joung-Hee Lee, Manho Kim, Kwang‐Woo Lee
SJR Q3Neuroreport

Mutations in human Cu,Zn-superoxide dismutase (SOD1) cause approximately 20% of familial amyotrophic lateral sclerosis (FALS) cases. The mechanism of late-onset disease manifestation despite the innate mutation has no clear explanation. The relationship between homocysteine (HC) and amyotrophic lateral sclerosis (ALS) has not been investigated, in spite of the similarity in their pathogenesis. We investigated the effect of HC on the motor neuronal cell-line transfected with SOD1 of either wild-t

NeurologyMedicine
14
Article|26 citations·2014
Pattern difference of dissociated hand muscle atrophy in amyotrophic lateral sclerosis and variants
Jee‐Eun Kim, Yoon‐Ho Hong, Joon‐Hyung Lee, Suk‐Won Ahn, Sung‐Min Kim, Kyung‐Seok Park, Jung‐Joon Sung, Kwang‐Woo Lee, Seung‐Yong Seong
SJR Q1Muscle & Nerve

INTRODUCTION: Split hand is considered to be a specific feature of amyotrophic lateral sclerosis (ALS). METHODS: We evaluated the pattern difference of intrinsic hand muscles of upper limb-onset ALS (UL-ALS), upper limb-onset progressive muscular atrophy (UL-PMA), brachial amyotrophic diplegia (BAD), and Hirayama disease (HD) by measuring objective electrophysiological markers. RESULTS: The abductor digiti minimi (ADM)/abductor pollicis brevis (APB) compound muscle action potential (CMAP) amplit

NeurologyMedicine
15
Article|24 citations·2013
Nocturnal Hypoxia in ALS Is Related to Cognitive Dysfunction and Can Occur as Clusters of Desaturations
Suyeon Park, Sung-Min Kim, Sung-Min Kim, Jung‐Joon Sung, Kyungmin Lee, Kyung Seok Park, Sang-Yun Kim, Sang-Yun Kim, Hyunwoo Nam, Kwang Woo Lee
SJR Q1PLoS ONEOA

BACKGROUND: Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease that leads to progressive weakness of the respiratory and limb muscles. Consequently, most patients with ALS exhibit progressive hypoventilation, which worsens during sleep. The aim of this study was to evaluate the relationship between nocturnal hypoxia and cognitive dysfunction and to assess the pattern of nocturnal hypoxia in patients with ALS. METHOD: Twenty-five patients with definite or probable ALS underwent ne

NeurologyMedicine

Research Areas

NeurologyPathology and Forensic MedicineMolecular BiologyAerospace EngineeringCellular and Molecular NeurosciencePhysiology

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