OBJECTIVES: To determine the impact of cigarette prices on the decision to initiate and quit smoking by taking into account the interdependence of smoking and other behavioral risk factors. METHODS: The study population consisted of 3,000 male Koreans aged > or =20. A survey by telephone interview was undertaken to collect information on cigarette price, smoking and other behavioral risk factors. A two-part model was used to examine separately the effect of price on the decision to be a smoker, and on the amount of cigarettes smoked. RESULTS: The overall price elasticity of cigarettes was estimated at -0.66, with a price elasticity of -0.02 for smoking participation and -0.64 for the amount of cigarettes consumed by smokers. The inclusion of other behavioral risk factors reduced the estimated price elasticity for smoking participation substantially, but had no effect on the conditional price elasticity for the quantity of cigarettes smoked. CONCLUSIONS: From the public health and financial perspectives, an increase in cigarette price would significantly reduce smoking prevalence as well as cigarette consumption by smokers in Korea.
Adult ; *Costs and Cost Analysis ; Health Behavior ; Humans ; Korea/epidemiology ; Male ; Middle Aged ; Risk Factors ; Smoking/*economics/*prevention & control ; Social Environment ; Socioeconomic Factors ; *Tobacco

To examine the protection of retinal cell death by glutamate antagonists in vivo, this study was carried out in pressure-induced ischemia model. Firstly, we observed that ischemia resulted in the similar retinaldamage to the injuries caused by NMAD and Kainate toxicity. Secondly, the retinal cell death caused by ischemia was prevented by MK801 and CNQX, glutamate antagonists for NMDA and Kainate excitotoxicity, respectively at 24hr after ischemia. MK801 was shown to prevent the cell death in ganglion cell layer and CNQX in inner unclear layer. In addition, the combination of CNQX and MK801 protected the retina neuronal cell from ischemic injury better than when they were applied separately. The partial protection of retinal cell death by glutamate antagonists in ischemia model indicates that glutamate eoxicity as well as other cell death mechanism such as apoptosis mediates ischemia induced retinal cell death. Thus, cell death by other mechanism must be also blocked in order to prevent retinal cell death, completely.
6-Cyano-7-nitroquinoxaline-2,3-dione* ; Apoptosis ; Cell Death ; Dizocilpine Maleate* ; Excitatory Amino Acid Antagonists ; Ganglion Cysts ; Glutamic Acid ; Ischemia* ; Kainic Acid* ; N-Methylaspartate* ; Neurons ; Retina ; Retinaldehyde*

In order to elucidate in vivo neuronal cell death in the retina, and involvement of NF-kappa B in this process, we studied the degeneration of retinal ganglion cells (RGCs) and the activation of NF-kappa B after transection of the optic nerve of adult rat at 5 mm from the eyeball. The morphology of dying ganglion cells in the retinal ganglion cell layer was observed by light and electron microscopy, the activation of NF-kappa B was investigated immunohistochemically. Seven and 14 days post-axotomy, dying cells contained pyknotic nuclei. The death of retinal ganglion cells involved apoptosis, activation of NF-kappa B (p50 and p65) was prominent in a time dependent manner. We observed axotomy-induced NF-kappa B activation, which may mediate apoptosis of retinal ganglion cells.
Animal ; Apoptosis/physiology ; Axotomy ; Immunohistochemistry ; Male ; Microscopy, Electron ; NF-kappa B/biosynthesis* ; Optic Nerve/surgery ; Rats ; Rats, Sprague-Dawley ; Retinal Ganglion Cells/ultrastructure ; Retinal Ganglion Cells/pathology* ; Retinal Ganglion Cells/metabolism ; Substances: NF-kappa B

Symptomatic epidural varix presenting with radiculopathy is extremely rare. The most common misdiagnosis is reported as a sequestrated prolapsed nucleus pulposus in the preoperative evaluation. The method of evaluating enhanced MRI studies improved the efficacy of discovery and treatment of this condition. We experienced 6 cases of epidural varices that were diagnosed with T1 fat suppressed post-gadolinium enhanced MRI studies and we present the operative findings.
Diagnostic Errors ; Magnetic Resonance Imaging* ; Radiculopathy ; Varicose Veins*

This study was performed to investigate the effects of very low calorie diet (VLCD) using newly meal replacements that contain the wild grass extracts based on Samul-tang ingredients on weight reduction and health in the obese adult women (BMI > or = 25 kg/m2) for four weeks. Seventy five women participated in this experiment. Subjects were randomly classified three groups: 1) General Diet group (GD group, n = 25) consumed 3 regular meals within 600 kcal/day, 2) Meal replacements group (MR group, n = 25) consumed 1 regular meal and 2 meal replacements within 600 kcal/ day, 3) Herbal Meal replacements group (HMR group, n = 25) consumed 1 regular meal and 2 meal replacements within 600 kcal/day. Anthropometric measurements, body composition, biochemical measurements and body symptoms were assessed before (the initial) and after (the 4th week) the study. Anthropometry measurements such as weight, waist and hip circumference, and BMI and body composition such as body fat percent, fat mass significantly decreased in all groups after diet intervention. Anthropometric measurements and body composition of the HMR group significantly more than those of GD and MR groups. Serum Total cholesterol was significantly decreased in all groups. However, there was no significant difference among three groups during the experimental period. HMR group had significantly less felt a pain than GD and MR groups in body symptoms such as anemia, powerlessness, vomiting, constipation and dryness of skin during the experimental period. Therefore, very low calorie diet (VLCD) using meal replacements that contain the wild grass extracts based on Samul-tang ingredients was very effective on weight reduction and health in the obese adult women.
Adipose Tissue ; Adult* ; Anemia ; Anthropometry ; Body Composition ; Caloric Restriction* ; Cholesterol ; Constipation ; Diet ; Female ; Hip ; Humans ; Meals* ; Poaceae ; Skin ; Vomiting ; Weight Loss*

This study was performed to investigate the effects of very low calorie diet (VLCD) using meal replacements that contain the wild grass extracts based on Samul-tang ingredients on psychological factors and quality of life in the obese women (BMI > or = 25 kg/m2) for four weeks. Seventy five women (20 < or = age < 26) participated in this experiment. Subjects were randomly classified three groups: 1) General diet group (GD group, n = 27) consumed 3 regular meals within 600 kcal/day 2) Meal replacements group (MR group, n = 27) consumed 1 regular meal and 2 meal replacements within 600 kcal/day 3) Herbal Meal replacements group (HMR group, n = 27) consumed 1 regular meal and 2 meal replacements within 600 kcal/day. Physical factors (weight, BMI, fat(%)) of the HMR group significantly decreased more than those of GD and MR groups. Moreover, binge eating habit and environmental factors (surrounding support, emotional reaction, expression of opinion) of the HMR group significantly decreased more than those of GD and MR groups. Psychological factor and quality of life were no significant differences among three groups during the experimental period, because both were significantly decreased in all groups after 4 weeks. Therefore, very low calorie diet using meal replacements that contain the wild grass extracts based on Samul-tang ingredients for 4 weeks was effective on improvement of psychological factor and quality of life as well as weight reduction in the obese premenopausal women.
Bulimia ; Caloric Restriction* ; Diet ; Female ; Humans ; Meals* ; Poaceae ; Psychology* ; Quality of Life* ; Weight Loss

Long QT syndrome (LQTS) is characterized by the prolongation of the QT interval in ECG and manifests predisposition to life threatening arrhythmia which often leads to sudden cardiac death. We encountered a 3-generation family with 5 affected family members in which LQTS was inherited in autosomal dominant manner. The LQTS is considered an ion channel disorder in which the type and location of the genetic mutation determines to a large extent the expression of the clinical syndrome. Upon screening of the genomic sequences of cardiac potassium ion channel genes, we found a single nucleotide C deletion mutation in the exon 3 of KCNH2 gene that co-segregates with the LQTS in this family. This mutation presumably resulted in a frameshift mutation, P151fs+15X. This study added a new genetic cause to the pool of mutations that lead to defected potassium ion channels in the heart.
Adolescent ; Adult ; Aged ; Aged, 80 and over ; Asian Continental Ancestry Group/*genetics ; DNA Mutational Analysis ; Ether-A-Go-Go Potassium Channels/*genetics ; Exons ; Female ; Frameshift Mutation ; Genotype ; Humans ; Long QT Syndrome/*diagnosis/genetics ; Male ; Middle Aged ; Pedigree ; Republic of Korea ; Sequence Deletion

The Hairless (HR) gene regulates the expression of several target genes as a transcriptional corepressor of nuclear receptors. The hair follicle (HF), a small independent organ of the skin, resides in the epidermis and undergoes regenerative cycling for normal hair formation. HF development requires many genes and signaling pathways to function properly in time and space, one of them being the HR gene. Various mutations of the HR gene have been reported to cause the hair loss phenotype in rodents and humans. In recent studies, it has been suggested that the HR gene is a critical player in the regulation of the hair cycle and, thus, HF development. Furthermore, the HR gene is associated with the Wnt signaling pathway, which regulates roliferation and differentiation of cells and plays an essential role in hair and skin development. In this review, we summarize the mutations responsible for human hair disorders and discuss the roles of the HR gene in HF development.
Epidermis ; Hair ; Hair Follicle ; Humans ; Phenotype ; Receptors, Cytoplasmic and Nuclear ; Rodentia ; Skin ; Wnt Signaling Pathway

During the hair follicle (HF) cycle, HR protein expression is not concordant with the presence of the Hr mRNA transcript, suggesting an elaborate regulation of Hr gene expression. Here we present evidence that the 5′ untranslated region (UTR) of the Hr gene has internal ribosome entry site (IRES) activity and this activity is regulated by the binding of poly (rC) binding protein 2 (PCBP2) to Hr mRNA. Overexpression and knockdown of PCBP2 resulted in a decrease in Hr 5′ UTR IRES activity and an increase in HR protein expression without changing mRNA levels. We also found that this regulation was disrupted in a mutant Hr 5′ UTR that has a mutation responsible for Marie Unna hereditary hypotrichosis (MUHH) in both mice and humans. These findings suggest that Hr mRNA expression is regulated at the post-transcriptional level via IRES-mediated translation control through interaction with PCPB2, but not in MUHH.

OBJECTIVE: The study was designed to ascertain a proper method of early diagnosis and treatment of ectopic pregnancy by analyzing its clinical and epidemiological characteristics. METHODS: The medical records of patients who were diagnosed to ectopic pregnancy at Hallym medical center during the period from January 1, 2000 to December 31, 2007 have been reviewed. RESULTS: The incidence of ectopic pregnancy was 7.3% (1,067) out of 14,519 deliveries. The most frequent age group was 26~30 (29.5%). Risk factors they had were previous histories of abdominal or pelvic surgery (37.0%), artificial abortion (30.8%), pelvic inflammatory disease (12%), and tubal sterilization (9.6%). Most frequent clinical symptoms were amenorrhea (88.7%), lower abdominal pain (81.2%), and vaginal spotting (60.0%). Percentage of patients with hemoglobin level over 10.0 gm/dL was 79% and below 8.0 gm/dL 3.9%. The clinical symptoms of ectopic pregnancy most commonly occurred after 6~8 weeks from last menstrual period (47%). Ectopic gestation was implanted on the fallopian tube in 89%, cornus in 7.2%, ovary in 1.1% and the cervix in 2.7%. Laparosopic surgeries were performed in 755 cases (71.6%) and laparotomies in 273 cases (25.9%) and dilatation and curettages in 26 cases (2.5%). Salpingectomy was performed most frequently (82.4%). Methotrexate (MTX) treatment was successful in 13 cases (1.21%). CONCLUSION: The early diagnosis of ectopic pregnancy is most useful when serum beta-hCG and vaginal sonography are used together. Laparoscopy would be a preferred method because of its short hospitalization period and low complication rate compared with laparotomy in ectopic pregnancy treatment.
Abdominal Pain ; Amenorrhea ; Cervix Uteri ; Cornus ; Curettage ; Dilatation ; Early Diagnosis ; Fallopian Tubes ; Female ; Hemoglobins ; Hospitalization ; Humans ; Incidence ; Laparoscopy ; Laparotomy ; Medical Records ; Methotrexate ; Metrorrhagia ; Ovary ; Pelvic Inflammatory Disease ; Pregnancy ; Pregnancy, Ectopic ; Risk Factors ; Salpingectomy ; Sterilization, Tubal