Mitochondrial DNA (mt DNA) and the non-recombining region of the Y chromosome are passed down, unaltered, from generation to generation, matrilineally and patrilineally, respectively. Therefore, the Y-chromosome DNA and mtDNA are known as lineage markers, and they play important roles in studies based on human migration and evolutionary history. Y-chromosome DNA is used in forensic analysis to identify individuals involved in cases of sexual assault. In this paper, we review the methods of statistical evaluation of lineage markers used in forensic identification. We also review the combined approach of autosomal and lineage marker evidence.
DNA ; DNA, Mitochondrial ; Human Migration ; Y Chromosome

The management of skin and soft tissue defects on the buttock, perineum and lower abdomen has been improved through the development of myocutaneous flap. However, sacrifice of the deep muscles causes some problems such as intraoperative bleeding and functional disabilities of donor sites. And we can not also control the volume of the flap for the skin reliability of myocutaneous flaps. To overcome these disadvantages, we tried perforator-based myocutaneous island flaps for the reconstruction of the sacral, ischial sores or deep wounds of the perineum and lower abdomen. During the dissection of the flap, we could control the volume and shape of the flap exactly depending on the perforators. Clinically, total of 14 cases were treated with 10 parasacral perforator-based myocutaneous island flaps and 4 perforator-based extended myocutaneous island flaps. Parasacral flap is based on the parasacral perforators along the lateral sacral border and, the degree of containing muscles can be easily decided according to the depth of wound. In the cases of the extended myocutaneous flaps, we could design the perforator-based skin flap on the tip of myocutaneous island flap and appropriate volume of skin falp was obtained with the wide arc of rotation. Finally, the donor defect could be closed primarily and there was no significant sequela. There perforator-based myocutaneous island flaps require no significant sacrifice of the muscles and can be easily dissected and applied with the appropriate volumes for the reconstruction of the defect on the buttocks, perineum and lower abdomen.
Abdomen ; Buttocks ; Hemorrhage ; Humans ; Muscles ; Myocutaneous Flap ; Perineum ; Skin ; Surgical Flaps ; Tissue Donors ; Wounds and Injuries*

The reconstruction of pressure sore is often complicated problem due to underlying disease and general condition of the patients. Sometimes, it is too radical to use the muscle or musculocutaneous flap for the patients who has severe systemic disease and can not withstand the lengthy operation or the patients who already recovered from paraplegic condition and has no risk recurrence. To get over these problems, we recently have used the parasacral perforator-based island skin flaps for the sacral pressure sores. This flap is based on the axial pattern perforators originating from the internal pudendal artery and lateral sacarl artery. We performed this operation for 11 sacral sores with reasonable results. There was no significant complication, and duration of operation was relatively short and blood loss was a little. We concluded that this flap was useful for the patient with sacral pressure sore who could be categorized nontraumatic nonparaplegic group(NTNP group) or nontraumatic paraplegic group(NTP group). But this island flap has drawback, which is elimination of sensory nerve within the flap.
Arteries ; Humans ; Myocutaneous Flap ; Pressure Ulcer* ; Recurrence ; Skin*

BACKGROUND: Nitric Oxide (NO) has been discovered to be an important endothelium-derived relaxing factor. The exogenous inhaled NO may diffuse from the alveoli to pulmonary vascular smooth muscle and produce pulmonary vasodilation, but any NO that diffuses into blood will be inactivated before it can produce systemic effects. To examine the effects of NO on pulmonary and systemic hemodynamics, NO was inhaled by experimental dogs in an attempt to reduce the increase in pulmonary artery pressure (PAP) and pulmonary vascular resistance (PVR) induced by hypoxia in dogs. METHODS: Eight mongrel dogs were studied while inhaling 1)50% O2 (baseline), 2)12% O2 in N2 (hypoxia), 3)followed by the same hypoxic gas mixture of O2 and N2 containing 20, 40 and 80 ppm of NO, respectively. RESULTS: Breathing at FIO2 0.12 nearly doubled the pulmonary vascular resistance from 173 56dyn sec cm-5 to 407 139dyn sec cm-5 and significantly increased the mean pulmonary artery pressure from 16 3mmHg to 22 4mmHg. After adding 20~80 ppm NO to the inspired gas while maintaining the FIO2 at 0.12, the mean pulmonary artery pressure decreased (p<0.05) to the level when breathing oxygen at FIO2 0.5 while the PaO2 and PaCO2 were unchanged. The pulmonary vascular resistance decreased significantly and the right ventricular stroke work index returned to a level similar to breathing at FIO2 0.5 by addition of NO into the breathing circuit. Pulmonary hypertension resumed within 3~5 minutes of ceasing NO inhalation. In none of our studies did inhaling NO produce systemic hypotension and elevate methemoglobin levels. CONCLUSIONS: Inhalation of 20~80 ppm NO selectively induced pulmonary vasodilation and reversed hypoxic pulmonary vasoconstriction without causing systemic vasodilation and bronchodilation. Methemoglobin and NO2 were within normal limit during the study.
Animals ; Anoxia ; Dogs ; Endothelium-Dependent Relaxing Factors ; Hemodynamics* ; Hypertension, Pulmonary ; Hypotension ; Inhalation* ; Methemoglobin ; Muscle, Smooth, Vascular ; Nitric Oxide* ; Oxygen ; Pulmonary Artery ; Respiration ; Stroke ; Vascular Resistance ; Vasoconstriction* ; Vasodilation

PURPOSE: The study was conducted to investigate correlation between professionalism, organizational communication the and patient safety culture of nurses in hemodialysis units and verify factors that affect patient safety culture. METHODS: Data were collected from 109 nurses working in hemodialysis units located in Seoul and Gyeonggi-do. collected data were analyzed using descriptive statistics including t-test, one-way ANOVA, Pearson correlation coefficient and stepwise multiple regression with the SPSS 21.0 program. RESULTS: The Professionalism of participants was significantly correlated with patient safety culture while the Organizational communication was also correlated with patient safety culture. Factors influencing participants' patient safety culture included professionalism, organizational communication, employment history in current hospital, and the number of patients per nurse. These factors explained 57.8% of patient safety culture. CONCLUSION: The research findings suggest that in order to increase the awareness of patient safety culture of nurses in hemodialysis units, strategic efforts are needed to enhance professionalism and organizational communication satisfaction of nurses in hemodialysis units.
Employment ; Gyeonggi-do ; Humans ; Patient Safety ; Professionalism ; Renal Dialysis ; Seoul

Although medical insurance claims data provide an increasingly accessible and widely used source of data for health care research, there are few studies about their sensitivity. This study was conducted to investigate the sensitivity of diagnosed cancers in medical insurance claims data. Every case of Kwangju Cancer Registry registered during 1998-1999 was checked for its status in medical insurance claims. The sensitivity of medical insurance claims was expressed as the proportion of cases who were reported as having cancer among cancer registry cases. The sensitivities of Kwangju and nationwide medical insurance claims data for overall cancer were 87.2% and 92.8%, respectively. For cancer sites, the sensitivity of medical insurance claims data was the highest for breast, followed by thyroid, lymphoma and colorectum, and the lowest for pancreas and kidney. Medical insurance claims data would provide reasonably high sensitivity for the detection of cancer, especially if nationwide medical insurance claims are included. Further studies should examine false positive cases to measure other dimensions of accuracy, such as specificity and predictive value.
Breast ; Gwangju ; Health Services Research ; Insurance* ; Kidney ; Lymphoma ; Pancreas ; Sensitivity and Specificity ; Thyroid Gland

No abstract available.
Foreign Bodies* ; Granuloma, Foreign-Body* ; Lipectomy*

BACKGROUND/AIMS: Fecal calprotectin (FC) is a marker of intraluminal intestinal inflammation. Intestinal inflammation may contribute to the pathophysiology of irritable bowel syndrome (IBS). This study evaluated FC levels in children with IBS and differences in FC levels in children stratified by IBS subtype and healthy controls (HCs).METHODS: A total of 157 children with IBS and 56 HCs aged 4–16 years (119 boys, 94 girls, mean age of 9.48 years) were included in this prospective study. Children with IBS were diagnosed using the Rome III criteria and classified into 4 subtypes: IBS with constipation (IBS-C, n=37), IBS with diarrhea (IBS-D, n=54), IBS with alternating constipation and diarrhea (IBS-M, n=49), and IBS unsubtyped (IBS-U, n=17); postinfectious IBS (PI-IBS) was also considered. The FC concentration in stool samples was analyzed using an enzyme-linked immunosorbent assay. All participants answered a questionnaire regarding several demographic and clinical characteristics.RESULTS: Children with IBS had significantly higher levels of FC than the HCs (88.71 μg/g vs. 17.77 μg/g). Among the 4 IBS subtypes, the FC concentration was highest in children with IBS-D, followed by those with IBS-M, IBS-C, and IBS-U (169.94 μg/g vs. 45.04, 31.22, and 33.52 μg/g, respectively), and these differences were statistically significant. For PI-IBS, 90% of cases were in the IBS-D group.CONCLUSIONS: The FC level was significantly higher in children with IBS than in HCs and differed depending on the IBS subtype, supporting the notion that IBS is a type of low-grade bowel inflammation.
Child ; Constipation ; Diarrhea ; Enzyme-Linked Immunosorbent Assay ; Female ; Humans ; Inflammation ; Irritable Bowel Syndrome ; Leukocyte L1 Antigen Complex ; Prospective Studies

No abstract available.
Child* ; Humans ; Infant* ; Urinary Tract Infections* ; Urinary Tract*

Sudden hearing deterioration may occur in our population, but it is difficult to explain the exact pathophysiology and the cause. Magnetic resonance imaging (MRI) in sudden sensorineural hearing loss (SSNHL) is usually useful to evaluate neural lesions such as acoustic schwannoma and hemorrhage in labyrinth. Recently some cases of SSNHL caused by intralabyrintine hemorrhage were reported by the advance of MRI. In the case of intralabyrintine hemorrhage, MRI showed a hyperintense signal in the labyrinth on the pre-contrast and contrast enhanced T1-weighted image and relatively weak intensity on T2-weighted image. The prognosis SSNHL by intralabyrintine hemorrhage is generally known to be poor. We report a case of sudden deafness with intralabyrintine hemorrhage who has a history of anticoagulant administration, with a review of literature.
Ear, Inner ; Hearing ; Hearing Loss ; Hearing Loss, Sensorineural ; Hearing Loss, Sudden* ; Hemorrhage* ; Magnetic Resonance Imaging ; Neuroma, Acoustic ; Prognosis