Measurement and analysis of 90Y radioactivity in urine of patients treated with 90Y resin microspheres / 中华放射医学与防护杂志

Objective:To evaluate 90Y activity concentration in renal excretions during the first 48 hours after being treated with 90Y resin microspheres seleceive internal radiation therapy(SIRI) and to provide advice on the management of patient excreta after surgery. Methods:After surgery, urine excreted from 3 patients during 0-24 h and 24-48 h was collected respectively, and the 90Y activity concentration in urine was tested and analyzed. Results:90Y radioctivity in the urine excreted from 3 patients after surgery was (1 266±258)kBq/GBq during 0-24 h and (140±106) kBq/GBq during 24-48 h, respectively, and 90Y activity concentration were (640±113) kBq/L during 0-24 h and (53±12) kBq/L during 24-48 h. Conclusions:90Y radioactivity in patient′s urine excreted at 1 d was about 10 times higher than that at 2 d. After surgery, patients can accelerate the reduction of free 90Y activity by increasing excretion. Urine excreted by the patients during hospitalization should be handled in accordance with the requirements of the national standard HJ 1188-2021 Radiation protection and safety requirements for nuclear medicine.

Un modelo de estudio de la función tubular renal que no depende de la colección de orina de 24 horas / A model of study of renal tubular function that does not depend on the 24-hour urine collection

Introducción: El ensayo de muestras matutinas de orina pudiera mejorar el estudio de la función tubular en niños y adolescentes. Objetivo: Describir las tubulopatías diagnosticadas en niños y adolescentes después del ensayo de muestras matutinas de orina. Métodos: Se completó un estudio retrospectivo y analítico en el Laboratorio de Estudio de la Función Renal, Servicio de Laboratorio Clínico, Hospital Pediátrico Docente "Juan Manuel Márquez", con 70 informes de la función tubular hechos en muestras matutinas de orina de 56 probandos (varones: 50,0 por ciento; edad promedio: 4,3 ± 5,5 años; edades < 12 meses: 41,1 por ciento) atendidos entre 2015-2019 (ambos inclusive) que contenían los valores del filtrado glomerular, la excreción urinaria absoluta y fraccional de las sustancias de interés, la brecha aniónica, la presión parcial de los gases, y la acidez titulable, el pH, la densidad y la osmolaridad de los fluidos pertinentes. Los resultados obtenidos se integraron dentro de las construcciones de caso de varias tubulopatías. Resultados: La función tubular estaba conservada en el 41,1 por ciento de los probandos. La inmadurez tubular explicó los hallazgos en otros dos niños. La hipercalciuria idiopática (16,0 por ciento), la diabetes insípida de causa nefrogénica (8,9 por ciento) y la insuficiencia renal aguda (5,3 por ciento) fueron los hallazgos más frecuentes. En 14 de los probandos se diagnosticaron 10 tubulopatías que recorrieron el raquitismo carencial, la hipofosfatasia, la enfermedad de Leigh, el síndrome de Bartter, la enfermedad de Dent y la acidosis tubular I, II y IV. Conclusiones: El estudio tubular en muestras matutinas de orina permite el diagnóstico de importantes tubulopatías en las edades pediátricas(AU)

Introduction: The morning urine sample assay may improve the study of tubular function in children and adolescents. Objective: Describe the tubulopathies diagnosed in children and adolescents after the trial of morning urine samples. Methods: A retrospective and analytical study was completed at the Renal Function´s Study Laboratory, in the Clinical Laboratory Service at "Juan Manuel Marquez" Teaching Pediatric Hospital, with 70 reports of tubular function made in morning urine samples of 56 testees (males: 50.0 percent; average age: 4.3 ± to 5.5 years; ages< 12 months: 41.1 percent) attended from 2015 to 2019 (both inclusive) containing glomerular filtration values, absolute and fractional urinary excretion of substances of interest, anionic gap, partial gas pressure, and titrable acidity, pH, density and osmolarity of relevant fluids. The results obtained were integrated into the case constructions of various tubulopathies. Results: Tubular function was preserved in 41.1 percent of the testees. Tubular immaturity explained the findings in two other children. Idiopathic hypercalciuria (16.0 percent), nephrogenic diabetes insipidus (8.9 percent) and acute renal failure (5.3 percent) were the most frequent findings. In 14 of the testees, 10 tubulopathies were diagnosed were through deficiency rickets, hypophosphatasia, Leigh's disease, Bartter syndrome, Dent disease and tubular acidosis I, II and IV.. Conclusions: The tubular study with morning urine samples allows the diagnosis of important tubulopathies in the pediatric ages(AU)

Correlation of biomarkers and bone mineral density for osteoporosis in post-menopausal women

Background: Osteoporosis is a metabolic bone disorder characterised by a low bone mass and microarchitectural deterioration of bone tissue followed by enhanced bone fragility and a consequent rise in fracture risk. Aim of the study is to correlate the biomarkers and bone mineral density in postmenopausal osteoporosis.Methods: This is a prospective study done in the department of obstetrics and gynaecology, Narayana medical College and Hospital, Nellore for a period of 2 years (October 2016-October 2018). This study was designed to assess the correlation between bone mineral density (BMD) and various biochemical markers.Results: The mean age of the present study is 60.51±9.35 years. There is a significant correlation found between age, serum phosphorus, urinary OHPr and bone mineral density. The mean BMI of the present study is 24.75±4.25 kg/m2. There is a significant correlation observed between BMI, serum ionized calcium, urinary OHPr and bone mineral density. There exists a significant correlation between BMD and urinary OHPr. It is found that in menopausal women spine and hip are the major sites affected by osteoporosis. The early changes are found in lumbar spine compared to hip. In the present study with increase in BMI there is increase in BMD signifying obesity is a protective factor for osteoporosis leaving aside all it’s ill effects. Urinary hydroxyproline a marker of resorption is found to have a negative correlation with BMD.Conclusions: BMD measurements using DEXA are not readily available in India. Biochemical markers of bone remodelling are useful tools in assessment of osteoporosis and are safe, inexpensive, easily performed. In the present study an attempt is made to correlate biochemical markers and BMD so as to detect osteoporosis even before the changes being evident on imaging studies.

Dietary potassium intake and renal handling, and their impact on the cardiovascular health of normotensive Afro-Caribbeans / Ingesta dietética de potasio y manejo renal, y su impacto en la salud cardiovascular de los normotensos Afrocaribeños

OBJECTIVE: Recent nutritional profiles of dietary intake have indicated a shift from the ancient diet to the Western diet. The ancient diet provided high potassium and low sodium intake, which in turn led to sodium conservation and potassium excretion. This change in the dietary intake is expected to affect potassium and sodium handling in the kidneys. Numerous studies have been done to emphasize the importance of sodium handling by the kidneys and its impact on cardiovascular health . This study will investigate potassium intake and handling, and its impact on the cardiovascular health of a sample of normotensive Afro-Caribbeans by the possible modulation of the renin angiotensin aldosterone system (RAAS). METHODS: A sample of 51 normotensive Afro-Caribbean participants was recruited for the study. Participants were observed over a two-day period in which they were given a 24-hour ambulatory blood pressure monitor and a container to collect blood pressure data and a 24-hour urine sample. Anthropometric measurements were noted. Urinary electrolytes and supine plasma renin activity (PRA) were determined from the 24-hour urine collection and a blood sample. Dietary potassium intake was estimated based on dietary intake observations, and calculated based on the urinary potassium excretion. SPSS version 19 was used to analyse the data to make inferences. RESULTS: The daily potassium intake was observed to be 2.95 g/day and measured intake from the urinary potassium was between 4.95 and 7.32 g/day. Urinary potassium excretion was 3.66 (± 1.40) g/day. The urinary potassium excretion in the Afro-Caribbean sample in Barbados was higher than the other population samples. The averaged PRA of the participants (supine) was 0.778 (± 1.072) ng/mL/hour. The averaged nocturnal systolic blood pressure dip of the participants was 5.97 (± 4.324) %. There was no significant correlation between urinary potassium excretion, blood pressure, nocturnal systolic blood pressure dip and PRA. CONCLUSIONS: The Afro-Caribbean sample has an inadequate daily potassium intake based on the observed intake and recommended values, with a high urinary excretion of the electrolyte compared to other values in the literature. This high potassium excretion could have been partly due to low plasma renin activity levels in the study participants. As a possible consequence, an increase in the nocturnal peripheral resistance is a likely cause for the diminished systolic dip. The lack of correlations between dietary potassium excretion and the blood pressure parameters does not allow any firm inference of the electrolyte's handling and its impact on cardiovascular health in the normotensive Afro-Caribbean participants. However, further research is needed to get a more accurate daily potassium intake value, and a more statistically robust sample to assess whether potassium handling and blood pressure would be affected by a change in potassium intake.

OBJETIVO: Los perfiles nutricionales recientes de ingesta dietética han indicado un cambio de la dieta antigua a la dieta occidental. La dieta antigua ofrecía un consumo alto de potasio frente a un consumo bajo de sodio, lo que a su vez llevaba a la conservación del sodio y a la excreción del potasio. Se espera que este cambio en la ingesta dietética afecte el manejo del potasio y el sodio en los riñones. Se han realizado numerosos estudios con el fin de enfatizar la importancia del manejo del sodio por los riñones y su impacto en la salud cardiovascular. Este estudio investigará la ingesta y manejo del potasio, y su impacto en la salud cardiovascular de una muestra de normotensos afrocaribeños mediante la posible modulación del sistema renina-angiotensina-aldosterona (SRAA). MÉTODOS: Una muestra de 51 participantes normotensos afrocaribeños fue reclutada para el estudio. Los participantes fueron puestos bajo observación por un período de dos días, en los que recibieron un monitor ambulatorio para registrar la presión arterial por 24 horas, y un recipiente para recoger los datos de la presión arterial, y una muestra de orina de 24 horas. Se observaron las mediciones antropométricas. Los electrolitos urinarios y la actividad de renina plasmática (ARP) en posición supina, se determinaron a partir de la orina de 24 horas y una muestra de sangre. La ingesta dietética de potasio fue estimada en base a las observaciones hechas de la ingesta dietética, y se calculó a partir de la excreción del potasio urinario. La versión 19 del SPSS fue utilizada para analizar los datos y hacer inferencias. RESULTADOS: Se observó una ingestión diaria de potasio de 2.95 g/día, y la ingestión medida a partir del potasio urinario estuvo entre 4.95 y 7,32 g/día. La excreción del potasio urinario fue 3.66 (± 1.40) g/día. La excreción del potasio urinario en la muestra afrocaribeña en Barbados fue mayor que en las otras poblaciones. La actividad ARP promedio (supina) de los participantes fue 0.778 (± 1.072) ng/mL/hora. La caída nocturna promedio de la presión arterial sistólica de los participantes fue (± 4.324) 5.97%. No hubo ninguna correlación significativa entre la excreción del potasio urinario, la presión arterial, la caída nocturna de la presión arterial sistólica, y la actividad ARP. CONCLUSIONES: Partiendo de la base del consumo observado y los valores recomendados, la muestra afrocaribeña presenta una ingesta diaria inadecuada de potasio, con una alta excreción urinaria de electrólito, en comparación con otros valores en la literatura. Esta elevada excreción de potasio podría haberse debido en parte a niveles bajos de actividad de renina plasmática en los participantes del estudio. Una posible consecuencia es el aumento de la resistencia periférica nocturna como causa probable del descenso sistólico. La falta de correlación entre los parámetros de la presión arterial y la excreción de potasio dietético no permite ninguna inferencia sólida del manejo del electrólito y su impacto sobre la salud cardiovascular en los normotensos afrocaribeños participantes. Sin embargo, es necesario investigar más a fin de obtener un valor más exacto de la ingesta diaria de potasio y una muestra estadísticamente más sólida para evaluar si el manejo del potasio y la presión arterial podrían ser afectados por un cambio en la ingesta de potasio.

Determination of pinocembrin in human urine by LC-MS/MS and research on urinary excretion / 中国药学杂志

OBJECTIVE: To develop a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for determination of pinocembrin in human urine, and to investigate its urinary excretory after intravenous drip administration of pinocembrin in healthy volunteers.

Determination of ecabet and bismuth in human urine and study on their urinary excretion profiles / 中国药学杂志

OBJECTIVE: To establish an HPLC-MS method for the determination of ecabet and a HG-AFS method for the determination of bismuth, and to investigate their urinary excretion profiles after oral administration of ecabet bismuth suspension in healthy volunteers. METHODS: Urine samples were precipitated, acidized, and separated on an Hanbon ODS-2 column with methanol-20 mmol·L-1 ammonium (55:45) as a mobile phase. Electrospray ionization source and negative ion mode for MS were used. A sensitive hydride generation atomic fluorescence spectrophotometry (HG-AFS) method for the determination of bismuth was also developed and validated. Urine samples were digested using wet digestion method. Ten healthy volunteers were given single oral dose of 800 mg ecabet bismuth suspension. RESULTS: The calibration curve in urine was linear in the range of 20.44-30660 ng·mL-1 for ecabet and 0.3-40 ng·mL-1 for bismuth, respectively. The average recoveries were more than 92.8% and 92.0%, respectively. After the volunteers took the suspensions, the average urinary excretion rates of ecabet and bismuth were highest at 0-2 h and the average cumulative excretion percentages of ecabet and bismuth in urine within 72 h were (0.9±0.6)% and (0.02±0.01)%, respectively. CONCLUSION: The methods are suitable for the determination of ecabet and bismuth in human urine and for the investigation on their urinary excretion profiles. Copyright 2012 by the Chinese Pharmaceutical Association.

Excreción urinaria de isoflavonas en adultos mayores de 65 años que consumen un alimento funcional / Urinary isoflavone excretion in adults older than 65 years consuming a functional food

Functional foods (FF) are aimed to exert beneficial health effects. The isoflavones daidzein and genistein are bioactive phytoestrogens that may act as functional food ingredients. This study measured urinary excretion of these isoflavones contained in a powdered novel FF oriented to the elderly population, ready to consume as such or included into culinary preparations. The ingredients containing isoflavones were soybean flour, soybean protein (Glycine max L) and red clover extract (Trifolium pratense L). The study involved 30 volunteers of both sexes, 60 to 75 years old, who consumed 50 g of FF (n=16) or placebo food without isoflavones (n=14). The 24-hour urinary excretion of genistein and daidzein were determined before and after the intake of the mentioned foods by HPLC with diode array detector. The 24-h urinary concentration of genistein was 2.06+1.41 ppm and the daidzein concentration was 8.80 +/- 4.55 ppm. None of the individuals in the placebo group exhibited detectable amounts of isoflavones in urine. The study demonstrates that both phytoestrogens contained in the FF are bioavailable, first step to confirm their ability to exert bioactive effects. The study opens the possibility to verify the effects of both isoflavones to reduce risk factors of non transmissible chronically diseases.

Los alimentos funcionales (AF) ejercen efectos beneficiosos en la salud. Las isoflavonas daidzeína y genisteína son fitoestrógenos bioactivos que pueden actuar como ingredientes alimentarios funcionales. En este trabajo se evalúa la excreción urinaria de 24 horas de estas isoflavonas contenidas en un nuevo AF en polvo, de preparación instantánea, para ser consumido solo o incorporado en preparaciones, especialmente orientado a adultos mayores. Los ingredientes aportadores de isoflavonas son harina de soya, proteína de soya (Glycine max L.) y extracto de trébol rojo (Trifoliumpratense L.). El estudio se realizó en 30 voluntarios seleccionados de ambos sexos, de 60 a 75 años, divididos aleatoriamente en dos grupos, que consumieron una porción de 50 g de alimento funcional (n=16) o alimento placebo sin ingredientes aportadores de isoflavonas (n=14). La excreción urinaria de daidzeína y genisteína se determinó en la orina de 24 horas antes de la ingesta y posterior a la ingestión del alimento, y fueron cuantificadas por HPLC con detector de arreglo de diodo. La concentración urinaria de genisteína fue 2,06 +/- 1,41 ppm y la de daidzeína fue 8,80 +/- 4,55 ppm. En el grupo placebo las isoflavonas no fueron detectadas en la orina. El estudio muestra que las isoflavonas ingeridas a través del AF son biodisponibles, primer paso para poner en evidencia su carácter bioactivo. El trabajo abre la posibilidad de verificar los efectos de las isoflavonas contenidas en estos AF sobre la disminución del riesgo de enfermedades crónicas no transmisibles.

Pharmacokinetics, urinary excretion and dosage regimen of levofloxacin following a single intramuscular administration in cross bred calves

The pharmacokinetics and urinary excretion following single intramuscular administration of levofloxacin at a dose of 4 mg/kg was investigated in seven male cross bred calves. Appreciable plasma concentration of levofloxacin (0.38 +/- 0.06 microgram/ml) was detected at 1 min after injection and the peak plasma level of 3.07 +/- 0.08 microgram/ml was observed at 1 h. The drug level above MIC(90) in plasma was detected up to 12 h after administration. Rapid absorption of the drug was also evident by the high value of the absorption rate constant (2.14 +/- 0.24 /h). The overall systemic bioavailability of levofloxacin, after intramuscular administration, was 56.6 +/- 12.4%. The high value of AUC (7.66 +/- 0.72 mg.h/ml) reflected the vast area of body covered by drug concentration. Extensive distribution of the drug into various body fluids and tissues was noted by the high value of Vd(area) (1.02 +/- 0.05 l/kg). The high ratio of AUC/MIC (76.6 +/- 7.25) obtained in this study indicated excellent clinical and bacteriological efficacy of levofloxacin in calves. The elimination half-life and MRT were 3.67 +/- 0.4 h and 5.57 +/- 0.51 h, respectively. The total body clearance (Cl(B)) was 204.9 +/- 22.6 ml/kg/h. On the basis of the pharmacokinetic parameters, a suitable intramuscular dosage regimen for levofloxacin in calves would be 1.5 mg/kg repeated at 12 h intervals.

Effects of Short-Term Supplementation of Carnitine on Plasma and Urinary Carnitine and Plasma Lipid Levels of Healthy Male Adults

This study was conducted to evaluate changes in plasma concentration and urinary excretion of carnitine, as well as plasma lipid level and fatty acid composition, caused by short term supplementation of carnitine in humans. Ten healthy male subjects (21.2 +/- 0.5 years old) received oral carnitine supplementation (4 g/day) as tablets for two weeks. Fasting blood and random urine samples were collected from each subject both prior to and at the end of carnitine supplemention program. Following the 2 weeks of carnitine supplementation, plasma total carnitine (TCNE) concentration increased 20% (85.1 +/- 7.4 vs 67.3 +/- 9.1 micro mol/1, p>0.05), while urinary excretion of total carnitine increased ten times compared to the value measured prior to the supplementation (3051 +/- 692 vs 278 +/- 90.1 micro mol/g creatinine, p<0.01). Non-esterified carnitine (NEC) comprised from 71 to 88% of TCNE in plasma, and from 32 to 40% of TCNE excreted in the urine. Two weeks of carnitine supplementation in healthy adults significantly elevated plasma level of acid soluble acylcarnitine (ASAC) which is esterified mostly with short chain fatty acids (21.6 +/- 1.6 micro mol/l) compared to the value measured prior to the supplementation (6.4 +/- 0.8 micro mol/l) (p<0.05). Carnitine supplementation significantly increased plasma HDL-cholesterol level (p<0.05), and decreased the atherogenic index (p<0.05), but failed to cause any significant change in plasma levels of total cholesterol, triglyceride, and free fatty acids. Plasma triglyceride and phospholipid fatty acid compositions were not significaly affected as well by the oral supplementation of carnitine in subjects with normal range of blood lipid levels.

Relation Dietary and Urinary Na, K, and Ca Level to Blood Pressure in Elderly People in Rural Area

It has been considered that high Na intake, and low Ca/K intake are related to the incidence of hypertension. In this preliminary study, dietary Na, K, and Ca intake and their urinary excretion in rural area in Kyungpook province were measured to recognize the relationship between those blood pressure-related minerals and blood pressure regulation in elderly people in rural area of South Korea. Sixty eight subjects (male 39, female 29) aged over 60 were randomly selected in rural area in South Korea. Blood pressure and soup saltness were measured, and dietary intake using 24 hours recall and urinary excretion of Na, K and Ca were measured. Depending on the blood pressure level, the data were analyzed using non-parametric ANOVA of Kruskal Wallis analysis on the basis of categorizing of one of four blood pressure groups, such as normal, high normal, hypertension I and hypertension II. Mean systolic (124.2+/-15.1 mmHg) and diastolic (79.0+/-10.2 mmHg) blood pressures were within the normal range. Soup saltiness and systolic pressure was positively correlated (p<0.05). Even without statistical significance, dietary Na intake was higher in the upper systolic blood pressure groups then in the lower ones, which suggested higher Na intake caused the increase of blood pressure. No consistency was shown between the urinary concentration of Na, K, Ca level and blood pressure level, respectively. From the results of this study, it is assumed that high Na intake might be related to the incidence of hypertension. Further study with large sample size is needed to supplement the limitation of this preliminary study.

COMPARISON OF NUTRIENT INTAKE, AND RATIOS OF CREATININE, BODY MASS INDEX AND BASAL METABOLIC RATE TO MINERAL (Na, K, Ca, Mg, Zn, Fe, Cu) EXCRETION IN 24-HOUR URINE BETWEEN MALE UNIVERSITY STUDENTS WITH FEW EXERCISE AND MALE UNIVERSITY DISTANCE RUNNERS / 体力科学

This study was carried out to compare the nutrient intake, urinary excretion of mineral (Na, K, Ca, Mg, Zn, Fe, Cu ), and the ratios of creatinine (Cr), body mass index (BMI) and basal metabolic rate (BMR) to the amount of mineral in 24-hour urine between both the male university students with few exercise (non-exercisers) and male university distance runners. The propriety of ratios of Cr, BMI and BMR was also examined in order to estimate intake of mineral for the male university distance runners.<BR>There were no significant differences in the intakes of energy, protein and carbohydrate between the both groups of subjects, and those major nutrients were at reasonable levels for the both groups of subjects. On the other hand, neither the intake levels of VB<SUB>6</SUB>, Ca, Mg, and Cu in the non-exercisers, nor niacin, Mg and Cu in the male university distance runners reached the level of Recommended Dietary Allowance for the Japanese. The intakes of retinol, VB<SUB>1</SUB>, VB<SUB>6</SUB> and Ca were higher in the male university distance runners than in the non-exercisers. The urinary excretion and excretion ratio to intake of Zn, excretion ratio of Na, ratios of Cr, BMI and BMR of Zn, and Cr ratio of Na were higher in the non-exercisers than those in the male university distance runners. So as to achieve the same levels of Cr ratios of Ca and Zn as the non-exercisers, the male university long distance runners should take larger amounts of those minerals than the non-exercisers. It was suggested that the ratio of BMR rather than that of Cr ratio to urinary excretion of mineral would be suitable for the estimation of a desirable intake level of mineral for the male university distance runners.

Diurnal Variation of Urinary Excretion of Protein Metabolites and Electrolytes / 대한임상병리학회지

BACKGROUND: There have been numerous studies to define the diurnal variation of urinary excretions of substances. It is known that this variation is influenced by many factors. This diurnal variation also affects results of quantitative analysis of random urine. The purpose of this study is to evaluate the maximum excretion time of day for representative urinary analytes and to elucidate the most appropriate time for spot urine quantitative analysis. METHODS: The concentrations of following urinary analytes were measured on healthy male and female volunteers at 06, 08, 12, 16 and 24 hours in August 1995, March 1996 and January 1997: protein, amylase, urea nitrogen, creatinine, uric acid, sodium, potassium, chloride, magnesium, calcium and inorganic phosphorus were measured by Hitachi Model 747 automatic analyzer and microalbumin by Beckman Array 360. The statistical analyses of results were performed by one-way ANOVA and multiple comparison for the significance of difference. RESULTS: The excretion of protein, amylase, urea nitrogen, creatinine, sodium, potassium, chloride, magnesium and inorganic phosphorus showed the diurnal variations. The peak excretion time of protein, amylase, urea nitrogen and creatinine was at early morning. However, that of sodium, pota-ssium, chloride, magnesium and inorganic phosphorus was at afternoon. The excretion of urea nitrogen, sodium, chloride and magnesium revealed the seasonal variations. The excretion of urea nitrogen, sodium and chloride was increased during winter. CONCLUSIONS: The morning urine specimen is considered to be the most appropriate for analysing protein and nitrogenous substances and the afternoon specimen is appropriate for electrolytes.

Analysis of Daily Intake and Urinary Excretion of Iodine normal Control and Patient with Thyroid Disease / 대한내분비학회지

Iodine in physiological dosage is necessary for thyroid hormone. But insufficient or excessive intake of iodine could affect on thyroid function. However, little study is available on the current iodine state in Korea. To evaluate the current state of iodine intake and its effects on thyroid function, we measured the iodine intake, urinary excretion and thyroid status in 67 normal controls and 110 patients with thyroid disease from June 1991 to August 1993.The result were as follows; 1) There were no differences in the physical and daily intake of calorie between controls and patients with thyroid disease. 2) The mean daily intake of iodine was 391.4 ug in normal controls, 695.0 ug in patients with simple goiter, 672.0 ug in hypothyroidism, 453.5 ug in hyperthyroidism, and 297.4 ug in thyroid nodule. 3) The mean urinary iodine excretion was 640 ug/L in normal controls, 875 ug/L in patients with hyperthyroidism, 612 ug/L in thyroid nodule, 563 ug/L in hypothyroidism, and 549 ug/L in simple goiter. 4) There was decreasing tendency of the serum T_3, t_4 and significant increase in TSH concentration in subjects who ingest the dietary iodine above 1000 ug/day compared with the subjects who ingest below 150 ug/day(p<0.05). 5) Subjects who live in coastal area had much intake of iodine(1.8-2.5 times)than those of subjects live in inland area.In conculsion, Korean ingested more iodine than Europian and American but fewer than Japanese. Some of the patients with simple goiter and hypothyroidism patients may associated with excessive ingestion of iodine, but further systemized study will be required.