1.Cutaneous Metastasis of Breast Cancer Showing Diffuse Purpuric Macules and Patches
Hyun-Wook KIM ; Won-Oh KIM ; Young-Wook RYOO ; Sung-Ae KIM
Korean Journal of Dermatology 2021;59(2):140-143
Cutaneous and subcutaneous metastases from the neoplasm of visceral organs are uncommon and have been estimated to occur in only 0.7%∼9% of patients. Among these cases, breast cancer is the most frequently observed malignancy. The incidence of cutaneous metastasis of breast cancer is 23.9%. The most common clinical manifestation of cutaneous metastasis of breast cancer is non-fixed painless erythematous nodules on the anterior chest. However, cutaneous metastasis of breast cancer shows a wide range of clinical manifestations and can mimic benign dermatologic lesions such as erythema annulare centrifugum, contact dermatitis, cellulitis, and erysipelas. We report a 52-year-old woman who presented with diffuse purpuric macules and patches on the right trunk. Finally, based on the clinical and pathologic findings, a diagnosis of cutaneous metastasis of breast cancer was made, and the patient expired 1 year later.
2.Stem Cell Therapy for Neurodegenerative Diseases.
Jong Zin YEE ; Ki Wook OH ; Seung Hyun KIM
Hanyang Medical Reviews 2015;35(4):229-235
Neurodegenerative diseases are the hereditary and sporadic conditions which are characterized by progressive neuronal degeneration. Neurodegenerative diseases are emerging as the leading cause of death, disabilities, and a socioeconomic burden due to an increase in life expectancy. There are many neurodegenerative diseases including Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, Huntington's disease, and multiple sclerosis, but we have no effective treatments or cures to halt the progression of any of these diseases. Stem cell-based therapy has become the alternative option to treat neurodegenerative diseases. There are several types of stem cells utilized; embryonic stem cells, induced pluripotent stem cells, and adult stem cell (mesenchymal stem cells and neural progenitor cells). In this review, we summarize recent advances in the treatments and the limitations of various stem cell technologies. Especially, we focus on clinical trials of stem cell therapies for major neurodegenerative diseases.
Adult Stem Cells
;
Alzheimer Disease
;
Amyotrophic Lateral Sclerosis
;
Cause of Death
;
Cell Transplantation
;
Embryonic Stem Cells
;
Huntington Disease
;
Induced Pluripotent Stem Cells
;
Life Expectancy
;
Multiple Sclerosis
;
Neurodegenerative Diseases*
;
Neurons
;
Parkinson Disease
;
Stem Cells*
3.Angiokeratoma Circumscriptum: Successful Treatment with the Flashlamp Pulsed Tunable Dye Laser.
Sang Wook SON ; Seung Hyun HONG ; Gil Ju YI ; Hae Jun SONG ; Chil Hwan OH
Korean Journal of Dermatology 1998;36(1):152-155
Angiokeratoma circumscriptum is present at birth or early childhood and is an uncommon dermatosis characterized by papules and small nodules that may coalesce to form plaques. Histopathologically, there are varying degrees of hyperkeratosis, papillomatosis, and irregular acanthosis. In the papillary dermis, greatly dilated capillaries are observed, The acanthotic epidermis encircles the vascular spaces(blood cysts) where, occasionally, organized thrombi may be found. The use of pulsed-dye lasers to treat cutaneous vascular lesions is based on the theory of selective photothermolysis. We report a case of an angiokeratoma circumscriptum in an 48-year-old woman for whom the flashlamp pulsed tunable dye laser proved to be a highly successful means of treatment.
Angiokeratoma*
;
Capillaries
;
Dermis
;
Epidermis
;
Female
;
Humans
;
Lasers, Dye*
;
Middle Aged
;
Papilloma
;
Parturition
;
Skin Diseases
4.Colocalization of GABA and Glycine within the Neurons of the Rat Retina.
Wook Hyun SON ; Soo Ja OH ; In Bum KIM ; Myung Hoon CHUN ; Jin Woong JUNG
Korean Journal of Anatomy 1997;30(6):695-704
The role of GABA or glycine as an inhibitory neurotransmitter is well established, and GABAergic or glycinergic neurons appear to play an important role in the mammalian retinas. It has been reported that certain amacrine, bipolar, displaced amacrine and ganglion cells are consistently labeled with anti-GABA or anti-glycine antisera in the mammalian retinae so far, and it has been suggested that colocalization of GABA and glycine within the retinal neurons could be common in the mammalian retina by recent immunecytochemical and electrophysiological studies. This study was conducted to localize GABAergic and glycinergic neurons and to define whether GABA and glycine are colocalized within same retinal neurons of the rat retina by immunocytochemical method using anti-GABA and anti-glycine antisera. The results were as follows : 1. GABAergic neurons of the rat retina were amacrine, interplexiform, bipolar, displaced amacrine and ganglion cells, and processes of GABAergic neurons formed dense networks with distinct two bands in the inner plexiform layer. 2. Glycinergic neurons were amacrine, bipolar, displaced amacrine and ganglion cells,and their processes were evenly distributed as dense networks through whole inner plexiform layer. 3. 28.5% of GABA immunoreactive amacrine cells and 9.8% of GABA immunoreactive bipolar cells located in the inner nuclear layer,and 11.9% of labeled neurons located in the ganglion cell layer showed glycine immunoreactivity in the rat retina. These results demonstrate that GABA and glycine, major inhibitory neurotransmitters, are colocalized within certain amacrine and displaced amacrine cells, and a few bipolar cells, and that neurons synthesizing and utilizing both GABA and glycine as their neurotransmitters may play an unique role in the visual processing in the rat retina.
Amacrine Cells
;
Animals
;
GABAergic Neurons
;
gamma-Aminobutyric Acid*
;
Ganglion Cysts
;
Glycine*
;
Immune Sera
;
Neurons*
;
Neurotransmitter Agents
;
Rats*
;
Retina*
;
Retinal Neurons
5.Evolving Diagnostic Criteria in Amyotrophic Lateral Sclerosis and Its Differential Diagnosis
Korean Journal of Neuromuscular Disorders 2023;15(1):18-23
Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease characterized by the degeneration of upper motor neurons in the brainstem and spinal cord and lower motor neurons. ALS was first described by Jean-Martin Charcot in 1874 based on clinical features and postmortem examinations. In 1990, the first diagnostic criteria for ALS were developed based on clinical features. Subsequently, three additional diagnostic criteria were published. In this article, we introduce the clinical features, diagnostic criteria, and diseases that need to be differentiated in ALS.
6.A Case of Cerebral Infarction in a Child with Acute Lymphoblastic Leukemia Developed during Chemotherapy with E coli Asparaginase.
Ji Hyun OH ; Hyun Sang CHO ; Sang Wook HAN ; Chong Young PARK
Korean Journal of Pediatric Hematology-Oncology 2000;7(2):305-309
E. coli L-asparaginase treatment during induction therapy in acute lymphoblastic leukemia is known to be rarely complicated by thromboembolic events. It causes deficiencies of antithrombin III, plasminogen, fibrinogen, factor IX, XI, protein C and protein S. We recently experienced a case of infarction during induction therapy in a 9-year-old child diagnosed with ALL. After the four dose of L-asparaginase, she had a generalized tonic- clonic seizure and MRI of the head showed both occipital infarction. She had gross recovery of the neurological impairment in 4 days. We report this case with brief review of literature.
Antithrombin III
;
Asparaginase*
;
Cerebral Infarction*
;
Child*
;
Drug Therapy*
;
Escherichia coli*
;
Factor IX
;
Fibrinogen
;
Head
;
Humans
;
Infarction
;
Magnetic Resonance Imaging
;
Plasminogen
;
Precursor Cell Lymphoblastic Leukemia-Lymphoma*
;
Protein C
;
Protein S
;
Seizures
7.Clinical Assessment of Direct Antiglobulin Test Positive Serologic Findings in Hospital Patients.
Chung Hyun NAHM ; Oh Hun KWON ; Hyun Ok KIM ; Jong Wook LEE ; Seon Ho LEE ; Quehn PARK
Korean Journal of Blood Transfusion 1995;6(1):35-44
The direct antiglobulin test (DAT) is used in investigating autoimmune hemolytic anemia, drug-induced antibodies, hemolytic diseases of newborn and alloimmune reactions to recently transfused red cells. We performed 3,033 DATs in our blood bank from 1985 to 1992. When using a polyspecific antihuman globulin reagent, the DAT was positive in 7.2% of all cases tested. In further studies using monospecific anti-IgG and anti-C3d reagents, three patterns of reactivity were founded: in 37% of cases, red cells are coated with IgG alone; in 18% of cases, the red cells are coated with both IgG and complement; and in 45% of cases only with complement. We evaluated clinical significance of DAT positive results with the 227 patients' medical records which can be available for reviewing among the positive DAT patients. The male to female ratio of DAT positive patient was 1:2 and 41% of cases were belong to the 20-30 years old age group. The most common underlying disorders were systemic lupus erythematosus (29.5%), idiopathic (10.1%), hematologic malignancy (8.8%), and liver disease (6.2%). Patients with warm reactive autoantibodies account for 60.4% of all DAT positive cases. Cold reactive autoantibodies were demonstrated in 11%, and the mixed-types were 2.6%. Drug-induced DAT positive findings were observed in 15.4% and the DAT positve caused with transfusion associated alloantibodies were 7.5%. IgG warm-reactive autoagglutinins were more commonly detected in patients with autoimmune hemolytic anemia and drug induced hemolysis. Definite hemolysis was present in 37% of all DAT positive patients and especially in all patients with mixed type autoagglutinin. Drugs caused a positive DAT were cephalosporin, penicillin, isoniazid, and rifampicin.
Anemia, Hemolytic, Autoimmune
;
Antibodies
;
Autoantibodies
;
Blood Banks
;
Complement System Proteins
;
Coombs Test*
;
Female
;
Hematologic Neoplasms
;
Hemolysis
;
Humans
;
Immunoglobulin G
;
Indicators and Reagents
;
Infant, Newborn
;
Isoantibodies
;
Isoniazid
;
Liver Diseases
;
Lupus Erythematosus, Systemic
;
Male
;
Medical Records
;
Penicillins
;
Rifampin
8.An Influence of Modified Robicsek Sternal Wiring after Median Sternotomy on the Postoperative Sternal Wound Infection.
Won Ho CHANG ; Wook Youm DONG ; Hyun KIM ; Hong Chul OH ; Jung Wook HAN ; Hyun Jo KIM
The Korean Journal of Thoracic and Cardiovascular Surgery 2009;42(6):763-769
BACKGROUND: In the majority of cases, sternal instability and wound infection concomitantly present after a cardiac operation following conventional median sternotomy, and these complications have a major influence on the postoperative course. The aim of this study is to compare the results of the different sternal wiring techniques on sternal infection. MATERIAL AND METHOD: Between April 2004 and December 2008, 157 adult patients underwent cardiac operation through a median sternotomy. 86 patients who had undergone standard peristernal wiring were included in group A, whereas 71 patients who had undergone modified Robicsek sternal wiring were included in group B. The incidences of sternal wound complications in the two groups were assessed. RESULT: The mean age of the group B patients was older than that of the group A patients (61+/-10 years vs 57+/-13 years). The incidence of preoperative left ventricular dysfunction (ejection fraction <30%), chronic obstructive pulmonary disease, renal failure requiring dialysis and diabetes mellitus were significantly higher in Group B, whereas the other perioperative risk factors for infection were not significantly different between the two groups. Two patients in group A experienced superficial wound infection, whereas 4 patients in group B displayed superficial wound infection, but the difference was not statistically significant (p=0.255). Yet poststernotomy deep sternal wound infection appeared in 6 patients of group A, whereas none of the patients in group B displayed this malady. CONCLUSION: The modified Robicsek sternal wiring technique showed greater sternal stability even for the patient with a high risk for infection, and the technique caused a lower incidence of deep sternal wound infection.
Adult
;
Diabetes Mellitus
;
Dialysis
;
Humans
;
Incidence
;
Pulmonary Disease, Chronic Obstructive
;
Renal Insufficiency
;
Risk Factors
;
Sternotomy
;
Sternum
;
Ventricular Dysfunction, Left
;
Wound Infection
9.Elevated Serum Leptin Receptor and Insulin-like Growth Factor-1 Levels and High Levels of Leptin Receptor Expression in Acanthosis Nigricans Patients: Serologic and Histopathologic Analyses
Won-Oh KIM ; Hyun-Wook KIM ; Hyun-Jae JOE ; Young-Wook RYOO ; Hye-Ra JUNG ; Sung-Ae KIM
Korean Journal of Dermatology 2020;58(8):530-536
Background:
Acanthosis nigricans is characterized by a velvety thickening of the epidermis accompanied by different degrees of hyperpigmentation, and known to be linked to obesity and insulin resistance.
Objective:
We aimed to analyze obesity-related factors in acanthosis nigricans patients and to evaluate the correlations between acanthosis nigricans and various factors.
Methods:
From January 2004 to February 2015, 27 acanthosis nigricans patients participated in this study. Blood samples were collected from a control group of seven overweight people and from the seven acanthosis nigricans patients, and they were analyzed for different obesity-related factors. Skin samples were collected from the 23 acanthosis nigricans patients and from 11 patients with epidermal nevi, and immunohistochemistry was performed to detect the presence of adiponectin receptor 1, adiponectin receptor 2, and the leptin receptor.
Results:
The median serum leptin level in the acanthosis nigricans patients (13 ng/mL) was significantly higher than that in the overweight control individuals (8.9 ng/mL) (p=0.021). The acanthosis nigricans patients had significantly higher levels of insulin-like growth factor-1 in their serum samples (p=0.017). The immunohistochemical analysis determined that the skin from the acanthosis nigricans patients stained significantly more intensely for the leptin receptor compared with that seen in the skin from the patients with epidermal nevi (p=0.002).
Conclusion
In conclusion, this study’s findings suggest that the levels of leptin and insulin-like growth factor-1 in the serum, and the expression of the leptin receptor in the skin are elevated with acanthosis nigricans.
10.Depression and Caregiving Burden in Families of Patients with Amyotrophic Lateral Sclerosis.
Juyeon OH ; Ji Won AN ; Ki Wook OH ; Seong Il OH ; Jung A KIM ; Seung Hyun KIM ; Jeong Seop LEE
Journal of Korean Academy of Nursing 2015;45(2):202-210
PURPOSE: The purpose of this study was to describe depression, caregiving burden and the correlation of the two variables in the families of patients with amyotrophic lateral sclerosis (ALS) and to clarify factors predicting caregiving burden. METHODS: A descriptive and cross-sectional study was conducted with 139 family members who provided care to patients with ALS. The characteristics of patients and families, Korean-Beck Depression Inventory (K-BDI), Korean version of Zarit Burden Interview (K-ZBI) and Korean-Amyotrophic Lateral Sclerosis Functional Rating Scale - Revised (K-ALSFRS-R) were used as study measures. RESULTS: The mean score for K-BDI was 19.39 out of 63 suggesting sub-clinical depression and 38.2% of the family members exhibited depression. The mean score for K-ZBI was 66.03 out of 88. The predictors for K-ZBI were K-BDI, age of family member, length of time spent per day in caring, relationship to patient and K-ALSFRS-R. CONCLUSION: The results of this study suggest that levels of depression and caregiving burden are high among family members caring for patients with ALS. As depression is associated with caregiving burden, screening and emotional supports should be provided to reduce the burden of care for these family. Support programs to alleviate the care burden are also needed, considering family demographics, time per day in caring giving and K-ALSFRS-R.
Adult
;
Aged
;
Amyotrophic Lateral Sclerosis/pathology
;
Caregivers/*psychology
;
Cross-Sectional Studies
;
Depression/etiology/*psychology
;
Family
;
Female
;
Humans
;
Male
;
Middle Aged
;
Psychiatric Status Rating Scales
;
Quality of Life
;
Surveys and Questionnaires