1.IgG elution method using glycine acid EDTA: comparison to chloroquine method.
Seon Ho LEE ; Young Chul OH ; Ki Hong KIM ; Kyou Sup HAN ; Bok Yun HAN ; Sang In KIM
Korean Journal of Blood Transfusion 1993;4(1):61-66
No abstract available.
Chloroquine*
;
Edetic Acid*
;
Glycine*
;
Immunoglobulin G*
2.The Influence of Anticoagulants and Time of Measurements on D-Dimer Determinations.
The Korean Journal of Laboratory Medicine 2004;24(1):7-10
BACKGROUND: We evaluated the effects of anticoagulants used in blood sampling and time of mesurements after blood collection on D-dimer determinations. METHODS: A total of 32 samples of sodium citrated plasma, and 23 samples each of serum and ethylene diamine tetraacetic acid (EDTA) plasma, were studied. D-dimer was measured by enzyme linked fluorescent assay using a VIDAS analyzer. RESULTS: The mean+/-SD (median) of D-dimer titers in citrated plasma, serum, and EDTA plasma samples immediately after blood collection were 282.7+/-201.1 (224.6) microgram/L, 255.1+/-206.8 (197.3) microgram/L, and 313.3+/-230.8 (246.4) microgram/L respectively. The results obtained for the three different sample groups were well correlated. While the upper limit of the reference range for D-dimer for citrated plasma has been set at 500 microgram/L, the cut-off values for serum and EDTA plasma were 400 microgram/L (100%sensitivity and specificity), and 585 microgram/L (100% sensitivity and 94.7% specificity), respectively CONCLUSIONS: In addition to citrated plasma, both serum and EDTA plasma can be used for D-dimer assay. A delay in the time of measurements after blood collection does not influence the results significantly.
Anticoagulants*
;
Edetic Acid
;
Plasma
;
Reference Values
;
Sodium
3.Pitfalls in clinical genetics.
Hui-Lin CHIN ; Denise Li Meng GOH
Singapore medical journal 2023;64(1):53-58
With the increasing availability of genetic tests, more doctors are offering and ordering such tests for their patients. Ordering a genetic test appears to be a simple process of filling in paperwork, drawing 3 mL of blood in an ethylenediaminetetraacetic acid tube and receiving a test report. This is identical to sending off a full blood count. However, it is far more complex than that. There are many potential pitfalls, as shown by the increasing number of complaints and lawsuits filed against doctors and allied health staff. Furthermore, clinical genetics involves more than just ordering tests; in fact, focusing on genetic tests alone is a potential pitfall. In this review, we discuss the common pitfalls in clinical genetics and how doctors can avoid these pitfalls to ensure patient safety and to safeguard their practice.
Humans
;
Edetic Acid
;
Fenbendazole
;
Patient Safety
;
Physicians
4.Effect of acidic solutions on the microhardness of dentin and set OrthoMTA and their cytotoxicity on murine macrophage.
Soram OH ; Hiran PERINPANAYAGAM ; Yoon LEE ; Jae Won KUM ; Yeon Jee YOO ; Sang Min LIM ; Seok Woo CHANG ; Won Jun SHON ; Woocheol LEE ; Seung Ho BAEK ; Kee Yeon KUM
Restorative Dentistry & Endodontics 2016;41(1):12-21
OBJECTIVES: To evaluate the effects of three acids on the microhardness of set mineral trioxide aggregate (MTA) and root dentin, and cytotoxicity on murine macrophage. MATERIALS AND METHODS: OrthoMTA (BioMTA) was mixed and packed into the human root dentin blocks of 1.5 mm diameter and 5 mm height. Four groups, each of ten roots, were exposed to 10% citric acid (CA), 5% glycolic acid (GA), 17% ethylenediaminetetraacetic acid (EDTA), and saline for five minutes after setting of the OrthoMTA. Vickers surface microhardness of set MTA and dentin was measured before and after exposure to solutions, and compared between groups using one-way ANOVA with Tukey test. The microhardness value of each group was analyzed using student t test. Acid-treated OrthoMTA and dentin was examined by scanning electron microscope (SEM). Cell viability of tested solutions was assessed using WST-8 assay and murine macrophage. RESULTS: Three test solutions reduced microhardness of dentin. 17% EDTA demonstrated severe dentinal erosion, significantly reduced the dentinal microhardness compared to 10% CA (p = 0.034) or 5% GA (p = 0.006). 10% CA or 5% GA significantly reduced the surface microhardness of set MTA compared to 17% EDTA and saline (p < 0.001). Acid-treated OrthoMTA demonstrated microporous structure with destruction of globular crystal. EDTA exhibited significantly more cellular toxicity than the other acidic solutions at diluted concentrations (0.2, 0.5, 1.0%). CONCLUSIONS: Tested acidic solutions reduced microhardness of root dentin. Five minute's application of 10% CA and 5% GA significantly reduced the microhardness of set OrthoMTA with lower cellular cytotoxicity compared to 17% EDTA.
Cell Survival
;
Citric Acid
;
Dentin*
;
Edetic Acid
;
Humans
;
Macrophages*
;
Pemetrexed
5.Effect of acidic solutions on the microhardness of dentin and set OrthoMTA and their cytotoxicity on murine macrophage.
Soram OH ; Hiran PERINPANAYAGAM ; Yoon LEE ; Jae Won KUM ; Yeon Jee YOO ; Sang Min LIM ; Seok Woo CHANG ; Won Jun SHON ; Woocheol LEE ; Seung Ho BAEK ; Kee Yeon KUM
Restorative Dentistry & Endodontics 2016;41(1):12-21
OBJECTIVES: To evaluate the effects of three acids on the microhardness of set mineral trioxide aggregate (MTA) and root dentin, and cytotoxicity on murine macrophage. MATERIALS AND METHODS: OrthoMTA (BioMTA) was mixed and packed into the human root dentin blocks of 1.5 mm diameter and 5 mm height. Four groups, each of ten roots, were exposed to 10% citric acid (CA), 5% glycolic acid (GA), 17% ethylenediaminetetraacetic acid (EDTA), and saline for five minutes after setting of the OrthoMTA. Vickers surface microhardness of set MTA and dentin was measured before and after exposure to solutions, and compared between groups using one-way ANOVA with Tukey test. The microhardness value of each group was analyzed using student t test. Acid-treated OrthoMTA and dentin was examined by scanning electron microscope (SEM). Cell viability of tested solutions was assessed using WST-8 assay and murine macrophage. RESULTS: Three test solutions reduced microhardness of dentin. 17% EDTA demonstrated severe dentinal erosion, significantly reduced the dentinal microhardness compared to 10% CA (p = 0.034) or 5% GA (p = 0.006). 10% CA or 5% GA significantly reduced the surface microhardness of set MTA compared to 17% EDTA and saline (p < 0.001). Acid-treated OrthoMTA demonstrated microporous structure with destruction of globular crystal. EDTA exhibited significantly more cellular toxicity than the other acidic solutions at diluted concentrations (0.2, 0.5, 1.0%). CONCLUSIONS: Tested acidic solutions reduced microhardness of root dentin. Five minute's application of 10% CA and 5% GA significantly reduced the microhardness of set OrthoMTA with lower cellular cytotoxicity compared to 17% EDTA.
Cell Survival
;
Citric Acid
;
Dentin*
;
Edetic Acid
;
Humans
;
Macrophages*
;
Pemetrexed
6.Effects of citrate pyridoxal 5'-phosphate-TRIS(CPT) antivoagulant on spurious low platelet counts caused by EDTA.
Hee Jung KANG ; Woon Heung SONG ; Han Ik CHO ; Sang In KIM
Korean Journal of Hematology 1991;26(1):47-50
No abstract available.
Blood Platelets*
;
Citric Acid*
;
Edetic Acid*
;
Platelet Count*
;
Pyridoxal*
7.The effects of EDTA and pulsed Nd:YAG laser on apical leakage of canal obturation.
Jin Soo KWON ; Hee Joo LEE ; Bock HUR
Journal of Korean Academy of Conservative Dentistry 2003;28(1):50-56
The purpose of this study was to evaluate the effects of EDTA and pulsed Nd:YAG laser on apical leakage of canal obturation. Forty-eight single-rooted teeth were used in this study. The teeth were instrumented up to a size 40 K-file and irrigated with 2.5% NaOCl between each file size. And the teeth were divided into 4 groups. In group A, the root canals were irrigated with a final flush of 5ml 2.5% NaOCl as a control group. The teeth in group B were irrigated with a final flush of 5ml 17% EDTA. The teeth in group C and D were irradiated by pulsed Nd:YAG laser(laser parameters were set at 1W, 100mJ, 10Hz, and 2W, 100mJ, 20Hz respectively). The results were as follows: 1. Apical leakage was observed in 50% of samples in group A, 30% of samples in group B, 20% of samples in group C, and 10% of samples in group D. 2. The teeth in group B had less leakage than group A, but there was no statistically significant differences(p>0.05). 3. The teeth in group C, D had less leakage than group A, and there was statistically significant differences(p<0.05). 4. The teeth in group C, D had less leakage than group B, but there was no statistically significant differences(p>0.05). 5. There was no significant differences in apical leakage between group C and group D(p>0.05).
Dental Pulp Cavity
;
Edetic Acid*
;
Smear Layer
;
Tooth
8.Type and treatment of toxic mushroom poisoning in Korea.
Journal of the Korean Medical Association 2015;58(9):818-824
To eat unidentified or misidentified mushrooms taken from the wild can be very dangerous. In the vast majority of toxic mushroom ingestions in Korea, the mushroom was incorrectly identified. In general, poisoning of toxic mushrooms can be classified into seven types according to the toxins that they contain; amatoxin, gyromitrin, coprine, muscarine, ibotenic acid-muscimol, psilocybin-psilocin and gastrointestinal irritants. When clinicians care for a patient who ingested a toxic mushroom, it is very important to identify what kind of mushroom may have caused a patient's illness. But, in clinical practice, accurate botanical identification of the mushroom can be very difficult. Therefore, for estimating the caused mushroom and adequate treatment of poisoning, clinicians should know the type and treatment of toxic mushroom poisoning.
Agaricales*
;
Edetic Acid
;
Humans
;
Irritants
;
Korea*
;
Muscarine
;
Mushroom Poisoning*
;
Poisoning
9.Strutural Change of Root Surface Following CO2 Laser Treatment.
Do Young KIM ; Soo Boo HAN ; Jae Sung KO ; Sung Hyun PARK ; Seung Beom KYE ; Kwang Se HWANG ; Woo Sung KIM
The Journal of the Korean Academy of Periodontology 1997;27(3):469-478
The purpose of this study was to evaluate the structural change of root surface and the occlusion of dentinal tubule following CO2 laser treatment. Seven extracted healthy human premolar werw curetted, sectioned, and four specimens were randomly assigned to each of 6 different treatment groups : 1) untreated EDTA etched control; 2) root plande only; 3) CO2 laser treated with 2W mode 6(10msec/pulse, 20pps) for 1 minute; 4) CO2 laser treated with 2W mode 6(10msec/pulse, 20pps) for 2 minutes; 5) CO2 laser treated with 2W mode 7(20msec/pulse, 20pps) for 1 minute; 6) CO2 laser treated with 2W mode 7(20msec/pulse, 20pps) for 2 minutes. Following the prescribed treatment, the specimens were prepared for SEM evaluation. Results showed that CO2 laser may be effective to occlude dentinal tubules tor dentin sensitivity treatment. The effect of dentinal tubule occlusion was enhanced with increasing the total energy level lased to specimen regardless of lasing mode. The structural changes of root surfaces were restricted to superficies, and these changes included fissuring, charring, crater formation over the smooth lava like texture. The charring and crater formation implying root damage was observed in the case of the longer duration of a pulse. The results of the present study suggests that the pulsed CO2 laser with shorter pulse duration and longer exposure time can be used effectively in order to obtain the optimal dentinal tubule occlusion with minimal root damage.
Bicuspid
;
Dentin
;
Dentin Sensitivity
;
Edetic Acid
;
Humans
;
Lasers, Gas*
;
Trout
10.Effect of dentin pretreatment and curing mode on the microtensile bond strength of self-adhesive resin cements.
Seung Hyun YOUM ; Kyoung Hwa JUNG ; Sung Ae SON ; Yong Hoon KWON ; Jeong Kil PARK
The Journal of Advanced Prosthodontics 2015;7(4):317-322
PURPOSE: The aim was to evaluate the effect of curing mode and different dentin surface pretreatment on microtensile bond strength (microTBS) of self-adhesive resin cements. MATERIALS AND METHODS: Thirty-six extracted human permanent molars were sectioned horizontally exposing flat dentin surface. The teeth were divided into 12 groups (3 teeth/group) according to the dentin surface pretreatment methods (control, 18% EDTA, 10% Polyacrylic acid) and curing mode (self-curing vs. light-curing) of cement. After pretreatment, composite resin blocks were cemented with the following: (a) G-CEM LinkAce; (b) RelyX U200, followed by either self-curing or light-curing. After storage, the teeth were sectioned and microTBS test was performed using a microtensile testing machine. The data was statistically analyzed using one-way ANOVA, Student T-test and Scheffe's post-hoc test at P<.05 level. RESULTS: For G-CEM LinkAce cement groups, polyacrylic acid pretreatment showed the highest microTBS in the self-cured group. In the light-cured group, no significant improvements were observed according to the dentin surface pretreatment. There were no significant differences between curing modes. Both dentin surface pretreatment methods helped to increase the microTBS of RelyX U200 resin cement significantly and degree of pretreatment effect was similar. No significant differences were found regarding curing modes except control groups. In the comparisons of two self-adhesive resin cements, all groups within the same pretreatment and curing mode were significantly different excluding self-cured control groups. CONCLUSION: Selecting RelyX U200 used in this study and application of dentin surface pretreatment with EDTA and polyacrylic acid might be recommended to enhance the bond strength of cement to dentin.
Dentin*
;
Edetic Acid
;
Humans
;
Molar
;
Resin Cements*
;
Tooth