1.A Study on Mineral Changes on the Weathering Human Hair after Burial using EDX.
Won Kyu KIM ; Jeong Lae KIM ; Yong Seok NAM ; Yun Teak SHIM ; Kyu Sung HWANG
Korean Journal of Legal Medicine 2013;37(3):134-138
This study was undertaken to investigate mineral changes in weathered scalp hair after burial. EDX (energy dispersive X-ray spectroscopy) analysis was performed to measure the presence of minerals on the hair surface. Twelve scalp hairs, buried for 5-40 years, were chosen from deceased individuals buried in tombs in Soha-Ri, Kyonggi-Do, and other regions in Korea. Three normal hairs were used as the control group. EDX data showed that carbon, oxygen, and sulfur were detected in hair collected from all three burial grounds. In contrast, calcium was only detected in hair collected from tombs in Soha-ri. The amounts of calcium and sulfur were found to decrease with time for hair collected from tombs in Soha-ri. Similar results were observed with sodium for hair collected from other regions. These results show region specific mineral detection and a decrease in the concentration of minerals with time. Consequently, it is suggested that changes in minerals concentration in weathered hair could be used as basic data in the field of forensic medicine.
Burial
;
Calcium
;
Carbon
;
Forensic Medicine
;
Forensic Sciences
;
Hair
;
Humans
;
Korea
;
Minerals
;
Oxygen
;
Scalp
;
Sodium
;
Spectrometry, X-Ray Emission
;
Sulfur
;
Weather
2.Outcome of Surgical Angioplasty for Isolated Coronary Ostial Stenosis.
Keon Sik MOON ; Yun Joong KIM ; Jae Sung KIM ; Suk Keun HONG ; Hweung Kon HWANG
Korean Circulation Journal 1999;29(1):46-54
BACKGROUND: Although surgical angioplasty for isolated coronary ostial stenosis is assumend as an alternative approach to CABG, the clinical features of isolated coronary ostial stenosis, postoperative complications and follow-up angiographic results would have not been well studied. METHODS: We retrospectively studied 24 patients (female : male = 20 : 4, mean age 50.0 +/- 12.3 yr) who underwent surgical angioplasty for isolated coronary ostial stenosis using patch ( 22 fresh autologous pericardium, 2 saphenous vein) during the period of March 1990 through February 1998. Repeat coronary angiography (16 patients) and echocardiography (24 patients) were performed. Aortic regurgitation was evaluated semiquantitatively (Grade I - Grade IV). RESULTS: There were 3 deaths after surgical angioplasty. One death was due to acute coronary dissection perioperatively, the second due to low cardiac output syndrome 2 weeks post-surgery, and the third due to traumatic panperitonitis 10 months post-procedure. Angina recurred in 4 patients and the remaning 18 patients were symptom-free. Repeat angiography (19.3 +/- 20.7 Mo) showed widely patent ostium with excellent run-off except 2 patients (1 distal patch stenosis, 1 ostial restenosis in Takayasu's arteritis). The third symptomatic patient was proven to have coronary spasm by ergonovine test. AR increased in the fourth patient (Grade II -> III) with patent ostium. CONCLUSION: Surgical angioplasty may be feasible and alternative operative method to CABG for isolated coronary ostial stenosis. It should however be noted that postop AR can develop and/or increase. Further investigation is needed to evaluate the clinical significance of the AR.
Angiography
;
Angioplasty*
;
Aortic Valve Insufficiency
;
Cardiac Output, Low
;
Constriction, Pathologic*
;
Coronary Angiography
;
Coronary Artery Disease
;
Echocardiography
;
Ergonovine
;
Follow-Up Studies
;
Humans
;
Male
;
Pericardium
;
Postoperative Complications
;
Retrospective Studies
;
Spasm
3.In Vitro Effect of Liposome-mediated Combined p16 and p53 Gene Transfer to the Human Glioblastoma Cell Lines.
Chang Hyun KIM ; Jeong Taik KWON ; Byung Kook MIN ; Sung Nam HWANG ; Do Yun HWANG ; Duck Young CHOI
Journal of Korean Neurosurgical Society 2002;31(2):152-160
OBJECTIVE: To overcome the limitations of the single gene transfer, the authors present the results of wild-type p16 and p53 combined genes transfer in vitro to the U251MG and U373MG cell lines using cationic liposome as a vector. METHODS: To compare the therapeutic effect of the combined p16 and p53 genes transfer with the single p16 and p53 gene transfer, full length of wild-type human p16 and p53 gene, and combined p16-p53 genes were transferred in vitro to the U251MG and U373MG cell lines using cationic liposome as a vector. As the U251MG and U373MG cell lines are devoid of p16 and p53 genes, the therapeutic effect of the three groups of gene transfer could be evaluated by the growth suppression or percentage of the viable cells. Reverse transcription polymerase chain reaction(RT-PCR), flow cytometry, and electron microscopy(EM) were used for evaluation of the growth suppression or apoptosis of the tumor cells. RESULTS: p16 gene, p53 gene and the combined p16-p53 genes were effectively transferred to the cell lines using cationic liposome as a vector resulting in dramatic decrease of the viable tumor cells in comparison to the control group(p=0.004). The cytotoxic effect of the gene transfer in the U251MG cell line was the most significant in the combined p16-p53 group. However, in the U373MG cell line p53 single gene transfer group showed more significant effect than the combined gene transfer group. Apoptosis was confirmed by EM in the combined p16-p53 genes group. The G1 phase arrest effect, confirmed by the flow cytometry was more prevalent in the p16 gene transfer group than the other groups. CONCLUSION: Cationic liposome-mediated transfer of combined p16-p53 genes to the human glioblastoma cell lines is proven effective. However, the therapeutic effect of the combined p16-p53 genes transfer was not consistently superior to the single p16 or p53 gene transfer.
Apoptosis
;
Cell Line*
;
Flow Cytometry
;
G1 Phase
;
Genes, p16
;
Genes, p53*
;
Glioblastoma*
;
Humans*
;
Liposomes
;
Reverse Transcription
4.Clinical Outcome of Cranial Neuropathy in Patients with Pituitary Apoplexy.
Hyun Jin WOO ; Jeong Hyun HWANG ; Sung Kyoo HWANG ; Yun Mook PARK
Journal of Korean Neurosurgical Society 2010;48(3):213-218
OBJECTIVE: Pituitary apoplexy (PA) is described as a clinical syndrome characterized by sudden headache, vomiting, visual impairment, and meningismus caused by rapid enlargement of a pituitary adenoma. We retrospectively analyzed the clinical presentation and surgical outcome in PA presenting with cranial neuropathy. METHODS: Twelve cases (3.3%) of PA were retrospectively reviewed among 359 patients diagnosed with pituitary adenoma. The study included 6 males and 6 females. Mean age of patients was 49.0 years, with a range of 16 to 74 years. Follow-up duration ranged from 3 to 20 months, with an average of 12 months. All patients were submitted to surgery, using the transsphenoidal approach (TSA). RESULTS: Symptoms included abrupt headache (11/12), decreased visual acuity (12/12), visual field defect (11/12), and cranial nerve palsy of the third (5/12) and sixth (2/12). Mean height of the mass was 29.0 mm (range 15-46). Duration between the ictus and operation ranged from 1 to 15 days (mean 7.0). The symptom duration before operation and the recovery period of cranial neuropathy correlated significantly (p = 0.0286). TSA resulted in improvement of decreased visual acuity in 91.6%, visual field defect in 54.5%, and cranial neuropathy in 100% at 3 months after surgery. CONCLUSION: PA is a rare event, complicating 3.3% in our series. Even in blindness following pituitary apoplexy cases, improvement of cranial neuropathy is possible if adequate management is initiated in time. Surgical decompression must be considered as soon as possible in cases with severe visual impairment or cranial neuropathy.
Blindness
;
Cranial Nerve Diseases
;
Decompression, Surgical
;
Female
;
Follow-Up Studies
;
Headache
;
Humans
;
Male
;
Meningism
;
Pituitary Apoplexy
;
Pituitary Neoplasms
;
Retrospective Studies
;
Vision Disorders
;
Visual Acuity
;
Visual Fields
;
Vomiting
5.Revision of Nutrition Quotient for Korean adults: NQ-2021
Sung-Min YOOK ; Young-Suk LIM ; Jung-Sug LEE ; Ki-Nam KIM ; Hyo-Jeong HWANG ; Sehyug KWON ; Ji-Yun HWANG ; Hye-Young KIM
Journal of Nutrition and Health 2022;55(2):278-295
Purpose:
This study was undertaken to revise and update the Nutrition Quotient (NQ) for Korean adults, a tool used to evaluate dietary quality and behavior.
Methods:
The first 31 items of the measurable food behavior checklist were adopted based on considerations of the previous NQ checklist, recent literature reviews, national nutrition policies, and recommendations. A pilot survey was conducted on 100 adults aged 19 to 64 residing in Seoul and Gyeonggi Province from March to April 2021 using a provisional 26-item checklist. Pilot survey data were analyzed using factor analysis and frequency analysis to determine whether checklist items were well organized and responses to questions were well distributed, respectively. As a result, the number of items on the food behavior checklist was reduced to 23 for the nationwide survey, which was administered to 1,000 adults (470 men and 530 women) aged 19 to 64 from May to August 2021. The construct validity of the developed NQ (NQ-2021) was assessed using confirmatory factor analysis, linear structural relations.
Results:
Eighteen items in 3 categories, that is, balance (8 items), moderation (6 items), and practice (4 items), were finally included in NQ-2021 food behavior checklist. ‘Balance’ items addressed the intake frequencies of essential foods, ‘moderation’ items the frequencies of unhealthy food intakes or behaviors, and ‘practice’ items addressed eating behaviors. Items and categories were weighted using standardized path coefficients to calculate NQ-2021 scores.
Conclusion
The updated NQ-2021 appears to be suitable for easily and quickly assessing the diet qualities and behaviors of Korean adults.
6.Conservative approach for anterior crown-root fractured teeth: forced eruption
Ji-Eun KIM ; Sung-Hyeon CHOI ; Hoon-Sang CHANG ; Yun-Chan HWANG ; In-Nam HWANG ; Won-Mann OH
Journal of Dental Rehabilitation and Applied Science 2020;36(1):48-54
In the case of crown-root fracture due to traumatic injury in anterior tooth and the fracture margin is located subgingivally,forced eruption has been proposed for the reconstruction of deficient bone and soft tissue. Forced eruption is one of the easiestorthodontic approaches that can have an acceptable outcome and prognosis, and has a low incidence of relapse. However, using heavy forces or very fast movements can also cause tissue damage or ankylosis. The following case reports present forced eruption as treatment option of crown fracture in maxillary anterior teeth.
7.Changes in force generation by two-finger striking methods: an experimental study
Seon Mi YUN ; Hun KIM ; Kun HWANG ; Sung Gyun JUNG ; Young Joong HWANG
Archives of hand and microsurgery 2024;29(2):65-74
Purpose:
Acute sagittal injury in boxer’s knuckle causes extensor tendon subluxation. We analyzed anatomical measurements for posture-related hand parts and measured the force generated when striking the fingers.
Methods:
In 120 healthy adults (55 males, 65 females), the palm area, finger length, finger length, finger circumference, and wrist circumference were measured. Using a digital force gauge, the force generated by striking with finger flexion (FFF) performed by the middle finger was measured. The forces generated during extension flicking (FEFs) by the index and ring fingers were also measured. The forces exerted by the hand and fingers was measured using a grip force meter. The relationships of measured values with sex and age were statistically analyzed.
Results:
The FFF of the middle finger was 12.9±7.0 N, and the FEFs of the index and ring fingers were 6.8±2.5 N and 5.8±2.3 N, respectively. The grip force was 343.3±134.7 N in the four fingers excluding the thumb, 108.4±41.6 N in the index finger, 110.5±45.4 N in the middle finger, and 83.6±36.5 N in the ring finger. Males had higher FFF for the middle finger (17.9±6.6 N) than females (8.6±3.9 N) (p<0.001), and greater FEFs for the index (8.5±2.0 N) and ring fingers (7.1±2.2 N) compared to females (5.3±1.7 N and 4.7±.8 N, respectively) (p<0.001). Cross-analysis results showed differences by sex and age. The circumference of the index finger exceeded that of the ring finger.
Conclusion
The study findings shed light on the relationship between the forces generated in the process of finger flicking.
8.MR Imaging of Childhood Metachromatic Leukodystrophy.
Yun Sun CHOI ; Jae Young LEE ; Tae Sung KIM ; In One KIM ; Kyung Mo YEON ; Ok Hwa KIM ; Yong Seung HWANG
Journal of the Korean Radiological Society 1995;33(3):433-437
PURPOSE: The purpose of this study was to analyze the characteristic MR findings of childhood metachromatic leukodystrophy. MATERIALS AND METHODS: Five female patients (10--29 months old;mean age, 21.8 months) of biochemically confirmed metachromatic leukodystrophy were included in this study. We evaluated the extent of white matter degeneration, which was shown as high signal intensity on T2-weighted image, and the presence or absence of the enhancement. Result.' All 5 cases showed high signal intensity in periventricular deep white matter and centrum semiovale which were bilateral, symmetric and confluent. Posterior predominace, sparing of subcortical U fibers and immediate periventricular white matter, and the involvement of splenium of corpus callosum were also noted in all cases. There were other manifestations, such as 'tigroid pattern' in centrum semiovale (n=4), the involvement of genu of corpus callosum(n=4), posterior limb of internal capsule(n=4), descending pyramidal tracts (n=3), deep cerebellar white matter(n=1), claustrum(n=2), and diffuse brain atrophy(n=1). In three cases with Gd-infusion, contrast enhancement of the lesion was not seen. CONCLUSION: In childhood metachromatic leukodystrophy, MRI can clearly demonstrate the chracteristic extent of the white matter lesion and other associated findings, facilitating the differential diagnosis from other similar leukodystrophies.
Brain
;
Corpus Callosum
;
Diagnosis, Differential
;
Extremities
;
Female
;
Humans
;
Leukodystrophy, Metachromatic*
;
Magnetic Resonance Imaging*
;
Pyramidal Tracts
9.A Case of Renal abscess in Neonate.
Sung Yun CHOI ; Dae Hyun HWANG ; Hye Sun YOON
Journal of the Korean Society of Neonatology 2005;12(2):200-205
The renal abscess is a rare disease in neonate. The clinical findings consist of non- specific symptoms such as fever, lethargy, flank mass and laboratory abnormalities including leukocytosis, elevated CRP, ESR and pyuria. The diagnosis can be made with ultrasonography, CT scan and DMSA. The renal abscess involving corticomedullary region is known to be frequently associated with urologic abnormality and can progress into perirenal abscess which has been reported to have a poor prognosis. The treatments include antibiotic therapy, drainage of abscess and surgical intervention. We report a neonate with bilateral renal abscesses with underlying vesicoureteral reflux grade V which was successfully treated with antibiotic therapy and drainage of abscess.
Abscess*
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Diagnosis
;
Drainage
;
Fever
;
Humans
;
Infant, Newborn*
;
Lethargy
;
Leukocytosis
;
Prognosis
;
Pyuria
;
Rare Diseases
;
Succimer
;
Tomography, X-Ray Computed
;
Ultrasonography
;
Vesico-Ureteral Reflux
10.The Determinant of the Severity Who was Hospitalized with Asthma-like Symptoms in Influenza A (H1N1) Season.
Yoon Ha HWANG ; Sang Yun CHOI ; Sung Won KIM
Pediatric Allergy and Respiratory Disease 2012;22(2):147-153
PURPOSE: The aim of study was to identify the predictors of severe asthma exacerbation with influenza A (H1N1) infection so that intensive care could be initiated immediately. METHODS: Patients were diagnosed influenza A (H1N1), using a real-time reverse transcriptase polymerase chain reaction (RT-PCR) from the nasal aspirates in St. Mary's Medical Center, Busan, Korea, between September, 2009 and February, 2010. Medical records were retrospectively reviewed to collect data. Data were analyzed in two groups by severity of asthma exacerbation. The groups were severe groups and mild-moderate. Statistical analysis was performed by SPSS ver. 12.0. RESULTS: A total of 1,054 children were diagnosed influenza A (H1N1) infection. Of 1,054, 318 (30.1%) were hospitalized. There were 200 boys (62.9%) and median age was 5.0 years (0.1 to 18.0 years). Among hospitalized, 25.2% (80/318) were diagnosed asthma exacerbation. Among 80 patients, 16 (20.0%) were severe group. and 64 (80.0%) were mild-moderate. High leukocyte counts, neutrophil counts, and C-reactive protein (P<0.05) in serum had a greater risk for severe asthma exacerbation. Age, gender, early antiviral medication, gastrointestinal or neurological cosymptoms, allergic family history, sinusitis in water's view, total immunoglobulin E, Dermatophagoides pteronyssinus, Dermatophagoides farinae, mycoplasma coinfection, eosinophil and fever duration (P> or =0.05) were not reliable predictors. CONCLUSION: Among who had influenza A (H1N1) infection with asthma-like symptoms, patients who had not been managed asthma before, had high leukocyte, neutrophil, and C-reactive protein in serum, are likely to progress severe asthma exacerbation.
Asthma
;
C-Reactive Protein
;
Child
;
Coinfection
;
Dermatophagoides farinae
;
Dermatophagoides pteronyssinus
;
Eosinophils
;
Fever
;
Humans
;
Immunoglobulin E
;
Immunoglobulins
;
Influenza A virus
;
Influenza, Human
;
Critical Care
;
Korea
;
Leukocyte Count
;
Leukocytes
;
Medical Records
;
Mycoplasma
;
Neutrophils
;
Retrospective Studies
;
Reverse Transcriptase Polymerase Chain Reaction
;
Seasons
;
Sinusitis