Background: Ferritin is used to detect iron overload in patients with chronic red blood cell transfusions. Although ferritin reflects the amount of iron storage in the body, it may increase nonspecifically in inflammation and infection. This study analyzed the cause of increased ferritin and the association with a red blood cell (RBC) transfusion. Methods: The medical records of patients who visited the authors' hospital from January to December 2017 and underwent a ferritin test were reviewed retrospectively. Hyperferritinemia was defined as a ferritin level more than 1,000 ng/mL. The causes of hyperferritinemia were investigated by examining the laboratory findings and medical records. Results: The results revealed 417 cases of hyperferritinemia in 238 patients during the period. The most common diseases were hematologic malignancies from 125 cases (30.0%) in 31 patients and infectious diseases were the second most common. Iron overload was suspected in 119 cases in 33 patients, and 12 patients (76 cases) were transfused with more than 8 units of RBC for 1 year before the test. Conclusion: In hyperferritinemia, the rate of iron overload is high considering the underlying diseases and chronic RBC transfusion. To determine iron storage status accurately, it will be helpful to measure the C-reactive protein (CRP) and iron saturation in the ferritin test. Careful attention should be paid to habitual iron formulations and frequent transfusions due to the possibility of iron overload.
Song, Jihyeo;Lee, Koeun;Song, Je Seon;Kim, Seong-Oh;Lee, Jaeho;Choi, Hyung-jun
Journal of the korean academy of Pediatric Dentistry
/
v.46
no.2
/
pp.200-208
/
2019
The purpose of this study was to analyze the dental consultation of pediatric inpatients to the department of pediatric dentistry in Yonsei University Severance Hospital, and to investigate the change in patterns. In 2017, 268 pediatric patients (384 cases) admitted to the Severance Hospital were referred to the department of pediatric dentistry. The mean age was 6.6 years, and most of the patients were referred from the Department of Pediatric Hematology Oncology and Rehabilitation Medicine. The chief complaints were as follows: oral examination (31%), dental caries (20%), oral pain (10%), tooth mobility (10%), pre-operative evaluation (9%) and others (20%). 41% of the patients received only oral examination without treatment. Dental caries were the most frequent dental diagnosis of the patients. 28% (111 cases) of patients received operative treatments, 22 cases were treated under general anesthesia. Oral health is closely related to systemic diseases, especially for hospitalized patients. Dental consultations should be encouraged for prevention and early appropriate treatments. For this purpose, it is necessary to establish a referral system and perform dental treatment under general anesthesia.
Purpose: The purpose of this study is to investigate a satisfaction survey of untact education and platforms that can be used for untact education to provide recommendations on future development of Education of Persons Conducting Clinical Trials. Methods: Online survey was distributed among students who have taken Untact Education of Persons Conducting Clinical Trials. The result was separated according to topic and descriptive statistics was used for analysis. The satisfaction survey used 10-point scale. Results: Of the 1,720 students who received the survey, 1,347 (78.3%) responded to the lecture satisfaction survey. The satisfaction level for broadcasting program (Kakao TV), an untact educational platform for the education of clinical trial workers at Kyung Hee University Medical Center, was relatively high with 8.09±1.99 points. Average score respondents recommending Kyung Hee University Untact Education of Persons Conducting Clinical Trials was 8.03±1.83 and customer recommendation score (Net Promotor Score) was 27.1%. Satisfaction level of the preferred training time was divided into weekday-morning (8-11 AM) (8.16±1.75), weekday-afternoon (12-4 PM) (7.73±2.07), weekday-evening (5-9 PM) (7.78±2.22), and weekend-morning (9-11 AM) real-time untact education (8.48±1.76) and analyzed. There was a noticeable difference between weekend-morning and weekday-afternoon (p<0.0001) and weekend-morning and weekday-evening (p=0.0001) real-time untact education. When asked about conducting education after COVID-19 pandemic ends, 79.2% (1,012 of 1,279) of the respondents answered that they prefer real-time untact education while 20.8 % (266 of 1,279) preferred face-to-face education. Conclusion: Online education, without time and space constraint, is expected to be the mainstream market in Korea for Education of Persons Conducting Clinical. Kyung Hee University Untact Education of Persons Conducting Clinical has achieved above average satisfaction using Kakao TV. Kyung Hee University Real-time Untact Education of Persons Conducting Clinical Net Promotor Score is 27.1%, which is above industry average, communication with trainees should be considered to improve Net Promotor Score.
Lee, Won Jong;Park, Seong Hyun;Park, Jun Hee;Oh, Seong Hwan;Lee, Dongjun
Journal of Life Science
/
v.32
no.6
/
pp.468-475
/
2022
The functional distinction between stem and progenitor cells is well established in several tissues, particularly in the blood. There, hematopoietic stem cells preserve their self-renewal potential and reconstitution ability in the bone marrow niche. Bone marrow represents a unique setting in which to examine how stroma influences tissue function. It was the setting in which the experimental definition of a niche was first provided in mammalian stem cell biology and where clear evidence for non-cell-autonomous oncogenesis was first defined. The relationship between bone and blood is ancient as all animals since the divergence of fish that have bones and blood, make blood in their bones. This long coevolution engendered complex interrelationships, including the first proposed and first experimentally defined niche for stem cells in mammals. Multiple bone marrow stromal cell types serve as regulators of hematopoiesis, and the dysfunction of some causes myelodysplasia and leukemia. However, no comprehensive atlas of stromal subpopulations exists. Therefore, we think these data point to something of importance, such as how the needs and challenges of the organism become translated down to distinct cell types that critically govern specific functions within tissues and do so at the level of a single molecule. We think this will be of broad interest to those focusing on systems biology and the physiology of organisms, particularly those seeking a molecular basis for understanding cell and tissue behavior. We summarized the current and emerging concepts of hematopoietic stem cells and bone marrow niche.
Lee, Sun Ju;Kang, Su Jin;Maeng, Chi Hoon;Shin, Yoo Jin;Yoo, Soyoung
The Journal of KAIRB
/
v.4
no.2
/
pp.36-41
/
2022
Purpose: The purpose of this study is to evaluate how university hospital Institutional Review Boards (IRBs) in Korea classify risk when reviewing clinical trial protocols. Methods: IRB experts (IRB chairman, vice chairman, IRB administrator) in the university hospitals obtaining a Human research protection program (HRPP) or IRB accreditation in Korea were asked to fill out the Google Survey from September 1, 2020 to October 10, 2020. Result: Among the 23 responder hospitals, 8 were accredited by the American Association for Human Research Protection Program (AAHRPP) and 8 were accredited by the HRPP of Ministry of Food and Drug Safety (MFDS). Seven were accredited by Forum for Ethical Review Committees in Asia and the Western Pacific or Korea National Institution for Bioethics Policy. Thirteen of 23 hospitals (56.5%) had 4 levels (less than minimal, low, moderate, high risk), 4 hospitals had 3 levels (less than, slightly over, over than minimal risk), 1 hospital had 5 levels (4 levels plus required data safety monitoring board), and 1 hospital had 2 levels (less than, over than minimal risk) risk classification system. Thirteen of 23 hospitals (56.5%) had difficulty classifying the risk levels of research protocols. Fourteen hospitals (60.9%) responded that different standards among hospitals for risk level determination associated with clinical trials will affect the subject protection. Six hospitals (26.1%) responded that it will not. Three hospitals (13.0%) responded that it will affect the beginning of the clinical trial. To resolve differences in standards between hospitals, 14 hospitals (60.9%) responded that either the Korean Association of IRB or MFDS needs to provide a guideline for risk level determination in clinical trials: 5 hospitals (21.7%) responded education for IRB members and researchers is needed; 3 hospitals (13.0%) responded that difference among institutions needs to be acknowledged; and 1 hospital (4.3%) responded that there needs to be communication among IRB, investigator, and sponsor. Conclusion: After conducting a nationwide survey on how IRB in university hospital determines risk during review of clinical trials, it is reasonable to use 4-level risk classification (less than minimal, low, moderate, high risk); the most utilized method among hospitals. Moreover, personal information and conflict of interest associated with clinical trials have to be considered when reviewing clinical trial protocols.
Sang-Heum Park;Samel Park;Jin Young Kim;Hyeon Ah Lee;Sang Mi Lee;Tae Hoon Lee;Sang Byung Bae;Sung Hae Chang;Si Hyong Jang;Sung Wan Chun;Jong Ho Moon
The Korean Journal of Medicine
/
v.99
no.2
/
pp.84-95
/
2024
In Harrison's Principles of Internal Medicine, human understanding is emphasized as one of three necessary characteristics that a physician must have. Inflammation, which is caused by inflammatory inducers (inf-ids), is a fundamental feature of disease at the cellular and molecular levels. Inflammation protects the body, but excessive or prolonged inflammation can be damaging and can cause disease. Humans are repeatedly exposed to external and internal environmental factors that generate inf-ids throughout their lives. External environmental factors include microbial and non-microbial inf-ids, as well as stressors that inevitably arise during social interactions. Internal environmental factors include the adaptive physiological response that is present from birth. Inf-ids may also be produced by the four-step habit loop, which consists of a cue (e.g., stressor), emotions, routine act (adaptive response), and a reward. Immune cells in the circulatory system and in tissues may have positive and negative effects in inflammatory responses. However, low-grade inflammation may be difficult to detect. We propose a model of disease development that integrates external and internal environmental factors from the perspective of human understanding.
Park, Eun Ho;Jang, Tae Won;Jang, Li La;Paek, Jong yun;Oak, Chul Ho;Jung, Mann Hong;Jang, Hee Kyung
Tuberculosis and Respiratory Diseases
/
v.62
no.3
/
pp.203-210
/
2007
Background: The incidence of adenocarcinoma of the lung has been increasing worldwide, and it has been generally been accepted to be relatively unrelated to smoking with a female preponderance. The aim of this study was to examine the gender-related pathological and survival differences in patients with an adenocarcinoma of the lung. Material and Method: A retrospective review of the clinical information of patients diagnosed with an adenocarcinoma of the lung at Kosin Medical Center from January 1999 to September 2005 was performed. The patient's demographics (age, gender), smoking history, stage, serum tumor marker, pathology classification, EGFR mutation, K-ras mutation, treatment methods, and survival time were analyzed. Result: Of the 438 patients, 179 (40.9%) were female. The median age at the diagnosis was 58 years for females and 59 years for males. However, 25.8% of women and only 17.7% of men were under 50 years of age (p=0.02). The distribution of the disease stage was similar in both men and women. The bronchioloalveolar carcinoma component was diagnosed more often in women (11.2%) than in men (5.0%). The overall survival rate was higher in women than in men (p=0.01), and women had a superior therapeutic response to a combined treatment of surgery and chemotherapy. Conclusion: This study showed significant genders differences in terms of the smoking history, bronchioloalveolar carcinoma component, overall survival, and survival after combined treatment of surgery and chemotherapy. Therefore, gender differences should be considered when diagnosing and treating adenocarcinomas of the lung.
Purpose : Acute leukemia with hyperleukocytosis (more than $10^5/mm^3$) is at high risk of early sudden death, usually from intracerebral hemorrhage. Emergency cranial irradiation is a relatively simple approach to solve this the problem. We summarized our experience of cranial irradiation in 24 leukemic children who presented with hyperleukocytosis. Methods and Materials : Between 1990 and 1998, 40 children with acute leukemia presenting with hyperleukocytosis were referred for emergency cranial irradiation. Among these patients, 24 children were evaluable. There were 16 boys and eight girls, their ages ranged from 2 to 13 years (median 9.5 years). The initial leukocyte counts ranged $109,910/mm^3\;to\;501,000/mm^3$. Peripheral blood smear was peformed in all patients and noted the morphology of the blast. Introduction of emergency cranial irradiation was determined by the leukocyte counts (more than 100,000/mm) and the existence of the blast in peripheral blood smear. All patients were treated with intravenous hydration with alkaline fluid and oral allopurinol. Cranial irradiation started on the day of diagnosis. With 2 Gy in one fraction in 4 patients, 4 Gy in two fractions in 20 patients. Results : The WBC count had fallen in 19 patients (83%) and no intracerebral hemorrhage occurred after irradiation. There were five cases of early deaths. Four patients died of metabolic complications, and one patient with intracerebral hemorrhage. He died 5 hours after cranial irradiation. No patient had any immediate side effect from cranial irradiation. Conclusion : Our data suggest, that emergency cranial irradiation can be safely chosen and effective in childhood leukemic patients presenting with high leukocyte counts.
Suh Chang Ok;Loh. John J.K.;Shin Hyun Soo;Lee Hyung Sik;Moon Sun Rock;Seong Jin Sil;Chu Sung Sil;Kim Gwi Eon;Han Eun Kyung;Park Chan Il
Radiation Oncology Journal
/
v.9
no.1
/
pp.37-45
/
1991
In order to assess the effects of radiofrequency-induced local hyperthermia on the normal liver, histopathologic findings and biochemical changes after localized hyperthermia in canine liver were studied. Hyperthermia was externally adminsitered using the Thermotron RF-8 (Yamamoto Vinyter Co., Japan; Capacitive type heating machine) with parallel opposed electrodes. Thirteen dogs were used and allocated into one control group (N=3) and two treatment groups according to the treatment temperature. Group I (N=5) was heated with $42.5\pm0.5^{\circ}C$ 30 minutes, and Group II (N=5) was heated with $45\pm0.5^{\circ}C$ for 15-30 minutes. Samples of liver tissue were obtained through a needle biopsy immediately after hyperthermia and T,14, and 28 days after treatment. Blood samples were obtained before treatment and W, 3,5, 7,14 and 28 days after treatment and examined for SGOT, SGPT and alkaline phosphatase. Although SGOT and SGPT were elevated after hyperthermia in both groups (three of five in each group), there was no liver cell necrosis or hyperthermia related mortality in Group 1. A hydropic swelling of hepatocytes was prominent histologic finding. Hyperthermia with $45^{\circ}C$ for 30 minutes was fatal and showed extensive liver cell necrosis. In conclusion, liverdamage dy heat of $42.5\pm0.5^{\circ}C$ for 30 minutes is reversible, and liver damage by heat of $45\pm0.5^{\circ}C$ for 30 minutes can be fatal or irreversible. However, these results cannot be applied directly to human trial. Therefore, in erder to apply hyperthermic treatment on human liver tumor safely, close obsewation of temperature with proper thermometry is mandatory. Hyperthermic treatment should be confined to the tumor area while sparing a normal liver as much as possible.
Purpose : The purpose of this study was to identify the current status of symptom and pain control in cancer patients treated with chemotherapy. Methods : The study population consisted of 66 cancer patients treated with chemotherapy and the data was collected by chart audit and using questionnaire from 19 clinicians in an university hospital during the period of August 7 to 24, 2001. The degree of symptom, analgesics type, dose, administration route, and pain control method of cancer patients treated with chemotherapy was investigated. The collected data were analyzed by frequency, percent, mean, and SD using SPSS $PC^+$ program. Results : The number of cancer patients treated with chemotherapy was 66, male 35 (53.0%), female was 31 (47.0%). The largest of age group was $61{\sim}69$(34.8%) years old. Most frequent cancer site was stomach 19 case (28.8%), cole-rectal 17 case (25.8%), urinary 11 case (16.7%) in the respective order. The most common stage of cancer was stage 3, 14 case (29.2%). The most frequent duration of diagnosis was under 3 month, 25 (37.9%). The frequent symptom of cancer patients treated with chemotherapy was marasmus ($2.4193{\pm}1.2220$), pain ($1.9333{\pm}1.2194$), sleep disorders ($1.7142{\pm}1.0384$), personality change ($1.5806{\pm}0.8971$) in the respective order. 3) The analgesics used for pai control were narcotic analgesics 66.2% and nonnarcotic analgesics 33.8%. Pain control method were regular basis+as needed 47.4%, as needed 31.6%, regular basis 21.0% in order. Administration route were oral 50.7%, injection 41.8%, patch 7.5% in order. Conclusion : The most frequent symptom of cancer patients treated with chemotherapy were marasmus and pain. The frequent analgesics was narcotic analgesics but 21% of the clinician regularly prescribed analgesics for pain control. Thus this prescription was insufficient for pain control. Administration route that were used more oral or injection than patch. Based on this evidence, it seemed that more active practice and education about evaluation and pain control of cancer patients treated with chemotherapy are needed.
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