1.A ruptured aneurysmal subarachnoid hemorrhage and vasospasm initially manifesting as acute ischemic stroke: a case report
Joongwon PARK ; Wonseok JEON ; Junho CHOI ; Chulho KIM
Journal of Neurocritical Care 2024;17(2):75-78
Background:
Most aneurysmal subarachnoid hemorrhages (SAHs) are accompanied by focal neurological deficits caused by a thunderclap headache. The neurological symptoms of aneurysmal SAH rarely present as vasospasm-induced cerebral ischemia.Case Report: A 51-year-old male presented to the emergency department with weakness in the left upper and lower limbs combined with dysarthria, which developed on the day of admission. An initial brain computed tomography scan revealed no clear signs of hemorrhage. However, the patient’s age (51 years) and history of thunderclap headache prompted further evaluation. Finally, the patient was diagnosed with vasospasm-induced ischemic stroke, caused by a ruptured cerebral aneurysm.
Conclusion
For patients with abrupt focal neurological deficits and severe thunderclap headaches, further consideration of aneurysmal rupture and the resulting vasospasm-induced cerebral ischemia may prevent the worst complications of stroke due to misdiagnosis.
2.A ruptured aneurysmal subarachnoid hemorrhage and vasospasm initially manifesting as acute ischemic stroke: a case report
Joongwon PARK ; Wonseok JEON ; Junho CHOI ; Chulho KIM
Journal of Neurocritical Care 2024;17(2):75-78
Background:
Most aneurysmal subarachnoid hemorrhages (SAHs) are accompanied by focal neurological deficits caused by a thunderclap headache. The neurological symptoms of aneurysmal SAH rarely present as vasospasm-induced cerebral ischemia.Case Report: A 51-year-old male presented to the emergency department with weakness in the left upper and lower limbs combined with dysarthria, which developed on the day of admission. An initial brain computed tomography scan revealed no clear signs of hemorrhage. However, the patient’s age (51 years) and history of thunderclap headache prompted further evaluation. Finally, the patient was diagnosed with vasospasm-induced ischemic stroke, caused by a ruptured cerebral aneurysm.
Conclusion
For patients with abrupt focal neurological deficits and severe thunderclap headaches, further consideration of aneurysmal rupture and the resulting vasospasm-induced cerebral ischemia may prevent the worst complications of stroke due to misdiagnosis.
3.A ruptured aneurysmal subarachnoid hemorrhage and vasospasm initially manifesting as acute ischemic stroke: a case report
Joongwon PARK ; Wonseok JEON ; Junho CHOI ; Chulho KIM
Journal of Neurocritical Care 2024;17(2):75-78
Background:
Most aneurysmal subarachnoid hemorrhages (SAHs) are accompanied by focal neurological deficits caused by a thunderclap headache. The neurological symptoms of aneurysmal SAH rarely present as vasospasm-induced cerebral ischemia.Case Report: A 51-year-old male presented to the emergency department with weakness in the left upper and lower limbs combined with dysarthria, which developed on the day of admission. An initial brain computed tomography scan revealed no clear signs of hemorrhage. However, the patient’s age (51 years) and history of thunderclap headache prompted further evaluation. Finally, the patient was diagnosed with vasospasm-induced ischemic stroke, caused by a ruptured cerebral aneurysm.
Conclusion
For patients with abrupt focal neurological deficits and severe thunderclap headaches, further consideration of aneurysmal rupture and the resulting vasospasm-induced cerebral ischemia may prevent the worst complications of stroke due to misdiagnosis.
4.Long-Term Outcome of Free Rectus Abdominis Musculocutaneous Flap for General Soft-Tissue Reconstruction.
Jungheum PARK ; Daegu SON ; Joongwon SONG
Archives of Reconstructive Microsurgery 2015;24(1):7-12
PURPOSE: The rectus abdominis musculocutaneous (RAM) flap has contributed to the efficient reconstruction of soft tissue defects. The flap has the advantage of easy dissection, minimal donor site morbidity, and the constant vascular anatomy with long pedicle. Authors used the free RAM flap to reconstruct multi-located soft tissue defects while still considering functionality and aesthetics. We present the long-term outcomes and versatility of free RAM flaps. MATERIALS AND METHODS: From 1994 to 2004, all patients who underwent soft tissue reconstruction with free RAM flap were reviewed retrospectively. The site of the reconstruction, vessels of anastomosis, type of RAM flap, and outcomes, including flap success rate, hospital stay after flap transfer, conduction of secondary procedure, flap complications, and donor-site complications were analyzed. RESULTS: Twenty-one patients underwent 24 free RAM flaps in site of breast, face, upper extremity and lower extremity. Mean follow-up period was 36.1 months (range, 3~156 months). The overall success rate was 92% with only a loss of 2 flaps. Minor complications related to transferred flaps were necrosis of 2 partial flaps, hematoma formation in 3 cases, and a wound infection in 1 case. Donor site morbidity was not observed. Debulking surgery was performed in 4 patients, and scar revision was performed in 3 patients. CONCLUSION: Free RAM flap is a workhorse flap for general soft-tissue reconstruction with minimal donor site morbidity with aesthetically good results. Thus, the free RAM flaps are versatile, and sturdy for any sites of soft-tissue where reconstruction could be performed.
Breast
;
Cicatrix
;
Esthetics
;
Follow-Up Studies
;
Free Tissue Flaps
;
Hematoma
;
Humans
;
Length of Stay
;
Lower Extremity
;
Myocutaneous Flap*
;
Necrosis
;
Reconstructive Surgical Procedures
;
Rectus Abdominis*
;
Retrospective Studies
;
Tissue Donors
;
Treatment Outcome
;
Upper Extremity
;
Wound Infection
5.Relevance of vacA Genotypes of Helicobacter pylori to cagA Status and Its Clinical Outcome.
Sill Moo PARK ; Joongwon PARK ; Jae Gyu KIM ; Byung Chul YOO
The Korean Journal of Internal Medicine 2001;16(1):8-13
BACKGROUND: Determination of vacA mosaicism may be important because specific Helicobacter pylori vacA genotype can be used to predict different clinical outcome. The aim of this study was to assess the relationship of vacA genotypes of Helicobacter pylori to cagA status and its development of peptic ulcer diseases in Korean patients. METHODS: Gastric biopsy specimens were obtained from 53 patients with gastric ulcer(GU), 57 with duodenal ulcer (DU) and 26 with chronic gastritis(CG) patients; all patients were infected with Helicobacter pylori. Bacterial mRNAs in the gastric mucosa were amplified by RT-PCR, using synthetic oligonucleotide primers specific for the vacA and the cagA gene. Patients with vacA s1 subtype were further examined to determine whether they had s1a or s1b subtype. RESULTS: There was no correlation in frequency of vacA s1 and/or s1a genotype between CG and either GU or DU, as the vacA s1 and s1a/m1 were present in the majority of strains independent of clinical status(s1 ; 100.0% versus 94.3 % or 93.0 % and s1a/m1 ; 76.9% versus 62.3% or 64.9%, res pectively). Likewise, there was no difference in the prevalence of the cagA gene between CG and either GU or DU patients (92.3% versus 90.6% or 98.2%, respectively). In addition, the cagA-negative status did not predict the presence of vacA s2 genotype. CONCLUSION: These results strongly suggest that either cagA or vacA s1 and/or s1a is not proved to be a useful marker to distinguish disease-specific Helicobacter pylori strains for the development of peptic ulcer diseases in Korean patients.
Adolescence
;
Adult
;
Aged
;
Aged, 80 and over
;
Bacterial Proteins/analysis*
;
Base Sequence
;
Biopsy, Needle
;
Chi-Square Distribution
;
Chronic Disease
;
Duodenal Ulcer/pathology
;
Duodenal Ulcer/genetics
;
Female
;
Gastritis/pathology
;
Gastritis/genetics
;
Genotype
;
Helicobacter Infections/pathology
;
Helicobacter Infections/genetics*
;
Helicobacter pylori/genetics*
;
Human
;
Korea
;
Male
;
Middle Age
;
Molecular Sequence Data
;
Peptic Ulcer/pathology
;
Peptic Ulcer/genetics*
;
Polymerase Chain Reaction
;
Probability
;
Prognosis
;
Sensitivity and Specificity
;
Stomach Ulcer/pathology
;
Stomach Ulcer/genetics
;
Support, Non-U.S. Gov't
;
Tissue Culture
6.Expression of Mucosal Cyto-Chemokine mRNAs in Patients with Helicobacter pylori Infection.
Sill Moo PARK ; Jin Hee KIM ; Yo Han HONG ; Hye Ryung JUNG ; Joongwon PARK ; Jae Gyu KIM ; Bung Chul YOO
The Korean Journal of Internal Medicine 2001;16(4):230-235
BACKGROUND: Helicobacter pylori-induced destruction of the gastroduodenal mucosal barrier is initiated with mucosal infiltration of inflammatory cells. Cytokines and chemokines have been suggested to play important roles in the migration and activation of these inflammatory cells into the mucosa. The present study aimed to investigate expression rates of cyto-chemokine mRNAs using gastric mucosal biopsy specimens. METHODS: In 98 patients infected with Helicobacter pylori, mucosal mRNA expression rates of cytokines (IL-1beta, IL-6, and IL-10), C-C chemokines (macrophage inflammatory protein 1alpha [MIP-1alpha], and macrophage inflammatory protein 1beta [MIP-1beta], monocyte chemotactic and activating factor [MCAF], regulated on activation, normal T cell expressed and presumably secreted [RANTES]) and C-X-C chemokines (IL-8 and growth regulated alpha [GRO-alpha]) were examined using reverse transcription polymerase chain reaction (RT-PCR). RESULTS: The expression rates of mRNA for IL-8, GRO-alpha, MIP-1alpha and RANTES were significantly more increased in H. pylori-positive patients than in H. pylori- negative patients. However, the expressions of IL-1beta, IL-6 and IL-10 mRNA were statistically not different between two groups. After eradication of H. pylori, expressions of mRNA for three cytokines (IL-1beta, IL-6 and IL-10), four C-C chemokines (MIP-1alpha, MIP-1beta, MCAF and RANTES) and two C-X-C chemokines (IL-8 and GRO-alpha) were significantly decreased. CONCLUSION: These results suggest that C-X-C chemokines and some C-C chemokines play important roles in H. pylori-associated peptic ulcer diseases.
Adult
;
Aged
;
Aged, 80 and over
;
Chemokines, CC/metabolism
;
Chemokines, CXC/metabolism
;
Chi-Square Distribution
;
Cytokines/*metabolism
;
Female
;
Gastric Mucosa/*immunology/metabolism
;
Helicobacter Infections/*immunology/metabolism
;
*Helicobacter pylori
;
Human
;
Male
;
Middle Age
;
Prospective Studies
;
RNA, Messenger/metabolism
7.Effects of Late-Passage Small Umbilical Cord–Derived Fast Proliferating Cells on Tenocytes from Degenerative Rotator Cuff Tears under an Interleukin 1β-Induced Tendinopathic Environment
Ah-Young LEE ; Ju-Young PARK ; Sam Joongwon HWANG ; Kwi-Hoon JANG ; Chris Hyunchul JO
Tissue Engineering and Regenerative Medicine 2024;21(8):1217-1231
BACKGROUND:
Tendinopathy is a chronic tendon disease. Mesenchymal stem cells (MSCs), known for their antiinflammatory properties, may lose effectiveness with extensive culturing. Previous research introduced ‘‘small umbilical cord–derived fast proliferating cells’’ (smumf cells), isolated using a novel minimal cube explant method. These cells maintained their MSC characteristics through long-term culture. Thus, the purpose of the present study was to assess the anti-inflammatory effects of late-passage smumf cells at P10 on tenocytes derived from degenerative rotator cuff tears in a tendinopathic environment.
METHODS:
The mRNA expression with respect to aging of MSCs and secretion of growth factors (GFs) by smumf cells at P10 were measured. mRNA and protein synthesis in tenocytes with respect to the tenocyte phenotype, inflammatory cytokines, and matrix- degradation enzymes were measured. The inflammatory signal pathways involving nuclear factor kappa B (NF-jB) and mitogen-activated protein kinase (MAPK) in tenocytes were also investigated. The proliferative response of degenerative tenocytes to co-culture with smumf cells over 7 days in varying IL-1β induced tendinopathic environments was investigated.
RESULTS
smumf cells at P10 showed no signs of aging compared to those at P3. smumf cells at P10, secreting 2,043 pg/ ml of hepatocyte growth factor (HGF), showed a 1.88-fold (p = .002) increase in HGF secretion in a tendinopathic environment. Degenerative tenocytes co-cultured with smumf cells showed significantly increased protein expression levels of collagen type I (Col I) and the Col I/III ratio by 1.46-fold (p < .001) and 1.66-fold (p < .001), respectively. The smumf cells at P10 reduced both mRNA and protein expression levels of matrix metalloproteinases-1, -2, -3, -8, -9, and -13 in tenocytes and attenuated NF-jB (phosphorylated IjBa/IjBa and phosphorylated p65/p65) and MAPK (phosphorylated p38/p38 and phosphorylated JNK/JNK) pathways activated by IL-1β. Removal of IL-1β from the co-culture accelerated the growth of tenocytes by 1.42-fold (p < .001). Removal of IL-1β accelerated tenocyte growth in co-cultures.CONCULSION Late-passage smumf cells exert anti-inflammatory effects on tenocytes derived from degenerative rotator cuff tears under a tendinopathic environment, primarily through the secretion of growth factors (GFs).
8.Effects of Late-Passage Small Umbilical Cord–Derived Fast Proliferating Cells on Tenocytes from Degenerative Rotator Cuff Tears under an Interleukin 1β-Induced Tendinopathic Environment
Ah-Young LEE ; Ju-Young PARK ; Sam Joongwon HWANG ; Kwi-Hoon JANG ; Chris Hyunchul JO
Tissue Engineering and Regenerative Medicine 2024;21(8):1217-1231
BACKGROUND:
Tendinopathy is a chronic tendon disease. Mesenchymal stem cells (MSCs), known for their antiinflammatory properties, may lose effectiveness with extensive culturing. Previous research introduced ‘‘small umbilical cord–derived fast proliferating cells’’ (smumf cells), isolated using a novel minimal cube explant method. These cells maintained their MSC characteristics through long-term culture. Thus, the purpose of the present study was to assess the anti-inflammatory effects of late-passage smumf cells at P10 on tenocytes derived from degenerative rotator cuff tears in a tendinopathic environment.
METHODS:
The mRNA expression with respect to aging of MSCs and secretion of growth factors (GFs) by smumf cells at P10 were measured. mRNA and protein synthesis in tenocytes with respect to the tenocyte phenotype, inflammatory cytokines, and matrix- degradation enzymes were measured. The inflammatory signal pathways involving nuclear factor kappa B (NF-jB) and mitogen-activated protein kinase (MAPK) in tenocytes were also investigated. The proliferative response of degenerative tenocytes to co-culture with smumf cells over 7 days in varying IL-1β induced tendinopathic environments was investigated.
RESULTS
smumf cells at P10 showed no signs of aging compared to those at P3. smumf cells at P10, secreting 2,043 pg/ ml of hepatocyte growth factor (HGF), showed a 1.88-fold (p = .002) increase in HGF secretion in a tendinopathic environment. Degenerative tenocytes co-cultured with smumf cells showed significantly increased protein expression levels of collagen type I (Col I) and the Col I/III ratio by 1.46-fold (p < .001) and 1.66-fold (p < .001), respectively. The smumf cells at P10 reduced both mRNA and protein expression levels of matrix metalloproteinases-1, -2, -3, -8, -9, and -13 in tenocytes and attenuated NF-jB (phosphorylated IjBa/IjBa and phosphorylated p65/p65) and MAPK (phosphorylated p38/p38 and phosphorylated JNK/JNK) pathways activated by IL-1β. Removal of IL-1β from the co-culture accelerated the growth of tenocytes by 1.42-fold (p < .001). Removal of IL-1β accelerated tenocyte growth in co-cultures.CONCULSION Late-passage smumf cells exert anti-inflammatory effects on tenocytes derived from degenerative rotator cuff tears under a tendinopathic environment, primarily through the secretion of growth factors (GFs).
9.Effects of Late-Passage Small Umbilical Cord–Derived Fast Proliferating Cells on Tenocytes from Degenerative Rotator Cuff Tears under an Interleukin 1β-Induced Tendinopathic Environment
Ah-Young LEE ; Ju-Young PARK ; Sam Joongwon HWANG ; Kwi-Hoon JANG ; Chris Hyunchul JO
Tissue Engineering and Regenerative Medicine 2024;21(8):1217-1231
BACKGROUND:
Tendinopathy is a chronic tendon disease. Mesenchymal stem cells (MSCs), known for their antiinflammatory properties, may lose effectiveness with extensive culturing. Previous research introduced ‘‘small umbilical cord–derived fast proliferating cells’’ (smumf cells), isolated using a novel minimal cube explant method. These cells maintained their MSC characteristics through long-term culture. Thus, the purpose of the present study was to assess the anti-inflammatory effects of late-passage smumf cells at P10 on tenocytes derived from degenerative rotator cuff tears in a tendinopathic environment.
METHODS:
The mRNA expression with respect to aging of MSCs and secretion of growth factors (GFs) by smumf cells at P10 were measured. mRNA and protein synthesis in tenocytes with respect to the tenocyte phenotype, inflammatory cytokines, and matrix- degradation enzymes were measured. The inflammatory signal pathways involving nuclear factor kappa B (NF-jB) and mitogen-activated protein kinase (MAPK) in tenocytes were also investigated. The proliferative response of degenerative tenocytes to co-culture with smumf cells over 7 days in varying IL-1β induced tendinopathic environments was investigated.
RESULTS
smumf cells at P10 showed no signs of aging compared to those at P3. smumf cells at P10, secreting 2,043 pg/ ml of hepatocyte growth factor (HGF), showed a 1.88-fold (p = .002) increase in HGF secretion in a tendinopathic environment. Degenerative tenocytes co-cultured with smumf cells showed significantly increased protein expression levels of collagen type I (Col I) and the Col I/III ratio by 1.46-fold (p < .001) and 1.66-fold (p < .001), respectively. The smumf cells at P10 reduced both mRNA and protein expression levels of matrix metalloproteinases-1, -2, -3, -8, -9, and -13 in tenocytes and attenuated NF-jB (phosphorylated IjBa/IjBa and phosphorylated p65/p65) and MAPK (phosphorylated p38/p38 and phosphorylated JNK/JNK) pathways activated by IL-1β. Removal of IL-1β from the co-culture accelerated the growth of tenocytes by 1.42-fold (p < .001). Removal of IL-1β accelerated tenocyte growth in co-cultures.CONCULSION Late-passage smumf cells exert anti-inflammatory effects on tenocytes derived from degenerative rotator cuff tears under a tendinopathic environment, primarily through the secretion of growth factors (GFs).
10.Effects of Late-Passage Small Umbilical Cord–Derived Fast Proliferating Cells on Tenocytes from Degenerative Rotator Cuff Tears under an Interleukin 1β-Induced Tendinopathic Environment
Ah-Young LEE ; Ju-Young PARK ; Sam Joongwon HWANG ; Kwi-Hoon JANG ; Chris Hyunchul JO
Tissue Engineering and Regenerative Medicine 2024;21(8):1217-1231
BACKGROUND:
Tendinopathy is a chronic tendon disease. Mesenchymal stem cells (MSCs), known for their antiinflammatory properties, may lose effectiveness with extensive culturing. Previous research introduced ‘‘small umbilical cord–derived fast proliferating cells’’ (smumf cells), isolated using a novel minimal cube explant method. These cells maintained their MSC characteristics through long-term culture. Thus, the purpose of the present study was to assess the anti-inflammatory effects of late-passage smumf cells at P10 on tenocytes derived from degenerative rotator cuff tears in a tendinopathic environment.
METHODS:
The mRNA expression with respect to aging of MSCs and secretion of growth factors (GFs) by smumf cells at P10 were measured. mRNA and protein synthesis in tenocytes with respect to the tenocyte phenotype, inflammatory cytokines, and matrix- degradation enzymes were measured. The inflammatory signal pathways involving nuclear factor kappa B (NF-jB) and mitogen-activated protein kinase (MAPK) in tenocytes were also investigated. The proliferative response of degenerative tenocytes to co-culture with smumf cells over 7 days in varying IL-1β induced tendinopathic environments was investigated.
RESULTS
smumf cells at P10 showed no signs of aging compared to those at P3. smumf cells at P10, secreting 2,043 pg/ ml of hepatocyte growth factor (HGF), showed a 1.88-fold (p = .002) increase in HGF secretion in a tendinopathic environment. Degenerative tenocytes co-cultured with smumf cells showed significantly increased protein expression levels of collagen type I (Col I) and the Col I/III ratio by 1.46-fold (p < .001) and 1.66-fold (p < .001), respectively. The smumf cells at P10 reduced both mRNA and protein expression levels of matrix metalloproteinases-1, -2, -3, -8, -9, and -13 in tenocytes and attenuated NF-jB (phosphorylated IjBa/IjBa and phosphorylated p65/p65) and MAPK (phosphorylated p38/p38 and phosphorylated JNK/JNK) pathways activated by IL-1β. Removal of IL-1β from the co-culture accelerated the growth of tenocytes by 1.42-fold (p < .001). Removal of IL-1β accelerated tenocyte growth in co-cultures.CONCULSION Late-passage smumf cells exert anti-inflammatory effects on tenocytes derived from degenerative rotator cuff tears under a tendinopathic environment, primarily through the secretion of growth factors (GFs).