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ABSTRACT: To investigate the relationships between respiratory function and osteoporosis, 132 premenopausal and 98 postmenopausal women were evaluated.
Bone mineral density (BMD) was measured with dual-energy X-ray absorptiometry. Pulmonary function and anthropometric parameters were measured using a spirometer and a body composition analyzer.
Lumbar spine and proximal femur BMDs in postmenopausal women with forced expiratory volume in 1s (FEV1) > or = 92.0% averaged 0.83 +/- 0.12 g/cm2 and 0.67 +/- 0.11 g/cm2, which were significantly above the values (0.76 +/- 0.14 g/cm2 and 0.61 +/- 0.12 g/cm2, P < 0.05) in those with FEV1 <92.0%. The prevalences of osteoporosis at lumbar spine and proximal femur were 59.2 and 46.9% in the postmenopausal women with peak expiratory flow rate (PEFR) <5.12 l/s, significantly higher than those of osteoporosis at the corresponding sites in the women with > or = 5.12 l/s (36.7 and 20.4%, P < 0.05). Lumbar spine and proximal femur BMDs were positively correlated with FEV1 (r = 0.28, P < 0.05; r = 0.31, P < 0.05) and PEFR (r = 0.35, P < 0.05; r = 0.23, P < 0.05) in postmenopausal women; however, no significant correlations were observed in premenopausal women.
Pulmonary function seems to be more closely associated with BMD in postmenopausal women than in premenopausal women. Poor respiratory function may be an indicator of postmenopausal women at increased risk of osteoporosis.
Maturitas 07/2004; 48(3):253-8. · 2.77 Impact Factor
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ABSTRACT: We investigated whether hypercholesterolemia influenced the values of mean corpuscular volume (MCV) and erythrocyte sedimentation rate (ESR).
A total of 463 nonanemic elderly persons were evaluated regarding red cell indices, ESR, and ESR-related parameters, such as fibrinogen, albumin, and C-reactive protein (CRP).
There were no significant differences in MCV between elderly men with and without hypercholesterolemia (>/=240 mg/dl) nor between the subjects with a marked increase of serum cholesterol concentrations (>/=260 mg/dl) and with severely lowered cholesterol concentrations (<155 mg/dl). ESR in elderly men with hypercholesterolemia averaged 12.3+/-6.8 mm/h, which were significantly higher than in those without hypercholesterolemia (6.0+/-4.7 mm/h, p<0.01). ESR averaged threefold higher in the elderly men with serum cholesterol concentration >/=260 mg/dl versus those with serum cholesterol concentrations <155 mg/dl, although no significant differences were observed in fibrinogen, albumin, and CRP values between the two groups. Serum cholesterol concentrations were higher in elderly men with ESR>/=15.0 mm/h (248.9+/-43.5 mg/dl), compared to those with ESR<2.0 mm/h (199.5+/-31.7 mg/dl, p<0.01). Serum cholesterol concentrations showed no associations with red cell indices but correlated significantly with ESR in elderly men (r=0.24, p<0.01) and postmenopausal women (r=0.21, p<0.01).
Hypercholesterolemia does not appear to influence MCV but significantly accelerates ESR, especially in elderly men.
Clinica Chimica Acta 04/2004; 341(1-2):117-21. · 2.54 Impact Factor
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ABSTRACT: The effectiveness of As2O3 treatment was studied in 3 carcinoma cell lines, LoVo, OVCAR-3, and PA-1, and in cancer cells obtained from ascites fluids of 8 patients with carcinomatosis peritonei. LoVo, OVCAR-3, and PA-1 cell lines, and cancer cells from the patients were cultured in As2O3 gradient media; As2O3 sensitivity was evaluated by trypan blue dye exclusion and by morphologic examination after Wright staining. PA-1 was the most sensitive cell line to As2O3; OVCAR-3 and LoVo were resistant to As2O3. Cancer cells from 2 of 8 patients were sensitive to As2O3. The in vivo tumoricidal effect of As2O3 (100 microg/day, i.p.) was studied in 30 BALB/c nude mice following i.p. implantation of PA-1 tumor cells. The 17 As2O3-injected mice died of extensive intratumoral hemorrhage, necrosis, and hemorrhagic ascites within 48 hr after initial treatment. In 10 As2O3-untreated tumor-bearing control mice, only focal intratumoral hemorrhage and necrosis were noted. In summary, solid tumor cell lines and cancer cells from patients showed various As2O3 sensitivities in vitro, and As2O3 had a marked tumoricidal effect on PA-1 cells in vivo. These results suggest that As2O3 treatment might possibly be beneficial in patients with carcinomatosis peritonei who are resistant to conventional therapy and whose tumors show in vitro sensitivity to As2O3. However, to minimize the life-threatening tumor lysis effect, it would be better to administer As2O3 after removal of the peritoneal tumor masses.
Annals of clinical and laboratory science 02/2004; 34(3):271-6. · 0.96 Impact Factor
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ABSTRACT: To investigate the association between respiratory function and basal metabolic rate (BMR), pulmonary function indices and BMR were measured in 251 elderly persons using a spirometer and a body composition analyzer. Forced vital capacity (FVC) and forced expiratory volume in one second (FEV1) were more strongly correlated with BMR (r = 0.48 and r = 0.43, p < 0.01) than with lean body mass (r = 0.36 and r = 0.35, p < 0.01) and waist-to-hip ratio (r = -0.29 and r = -0.32, p < 0.01) in elderly men. FVC and FEV1 in elderly men with BMR > or = 1390 kcal/day averaged 4.05 +/- 0.56 L and 3.19 +/- 0.45 L, which were significantly above the values (3.54 +/- 0.51 L and 2.80 +/- 0.42 L, p < 0.01) in men with BMR < 1390 kcal/ day. Prevalences of the subjects with elevated FVC or FEV1 were significantly higher in the group of men with BMR > or = 1390 kcal/day than in those with BMR < 1390 kcal/day (66.0% and 68.0% vs 28.3% and 33.9%, p < 0.01). No significant differences were observed between the postmenopausal women with BMR > or = 1135 kcal/day and those with BMR < 1135 kcal/day. In summary, respiratory function is more closely associated with BMR in elderly persons, compared to lean body mass, waist-to-hip ratio, or body fat mass, and these associations are stronger in men than in women.
Annals of clinical and laboratory science 02/2004; 34(1):99-102. · 0.96 Impact Factor
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ABSTRACT: To investigate the relationships of tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL), anthropometric variables, and lipid parameters, we measured serum TRAIL concentrations, body mass index (BMI), total body fat (TBF), and serum lipid profiles in 207 healthy adults. There were no significant differences in serum TRAIL concentrations between men and women, nor between elderly persons and middle-aged subjects. However, men with TBF 16.4 kg (75th per centile) exhibited significantly higher serum TRAIL concentrations than those with TBF 11.2 kg (25th per centile) (69.7 +/- 15.1 pg/ml vs 50.2 +/- 14.3 pg/ml, p < 0.05). Serum TRAIL concentration averaged 76.2 +/- 16.1 pg/ml in women with low-density lipoprotein cholesterol (LDL-C) 165 mg/dl (75th per centile), which was significantly above the values (53.1 +/- 12.9 pg/ml, p < 0.05) in those with LDL-C 117 mg/dl (25th per centile), although no differences were observed on the basis of TBF (75th percentile vs 25th percentile). Serum TRAIL concentrations correlated significantlywithTBF (r = 0.31, p < 0.05) and lean body mass (r = -0.26, p <0.05) in men and LDL-C (r = 0.32, p < 0.05) and total cholesterol (r = 0.21, p < 0.05) in women. In conclusion, serum TRAIL concentrations are associated with serum lipid levels and body adiposity in healthy adults, but are unrelated to a subject's age or gender.
Annals of clinical and laboratory science 01/2004; 34(4):400-4. · 0.96 Impact Factor
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ABSTRACT: To investigate whether any significant differences exist in the prevalence of osteoporosis in relation to ABO blood groups, 227 postmenopausal women were evaluated for bone mineral density (BMD), body composition, and anthropometric variables. There were no significant differences in age, anthropometric parameters, or body composition between women with O blood type and those with non-O blood types. However, lumbar spine and proximal femur BMDs in subjects with blood type O averaged 0.87+/-0.13 g/cm2 and 0.76+/-0.12 g/cm2, respectively, which were significantly above the values in those with non-O blood types (0.72+/-0.11 g/cm2 and 0.61+/-0.09 g/cm2, p<0.05, respectively). Among the ABO blood groups, the women with blood type AB showed the lowest BMDs (0.71+/-0.10 g/cm2 and 0.59+/-0.09 g/cm2) in the lumbar spine and proximal femur. The prevalences of osteoporosis in the proximal femur and lumbar spine averaged 2.3- and 1.7-fold higher in women with blood type AB than in those with blood type O. Thus, ABO blood group status seems to have a significant relationship to the prevalence of osteoporosis in postmenopausal women.
Annals of clinical and laboratory science 01/2004; 34(2):150-3. · 0.96 Impact Factor
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ABSTRACT: To investigate the value of Tc-99m ciprofloxacin imaging in the differential diagnosis of chronic bacterial prostatitis.
The study included 4 normal subjects as the negative controls, 2 patients with acute prostatitis or cystourethritis as the positive controls and 59 patients diagnosed as chronic bacterial prostatitis or chronic pelvic pain syndrome by traditional laboratory tests. In every subject, the single photon emission computerized tomography images were obtained 3 h after intravenous injection of Tc-99m Ciprofloxacin. The results of the imaging were compared with those of laboratory tests.
On the images, negative uptake was observed in all normal subjects, while strong hot uptake, in the whole prostate of acute prostatitis patients and in the whole urethra of acute cystourethritis patients. In 13 (68%) of 19 patients categorized as chronic bacterial prostatitis by standard laboratory tests, hot uptake with less intensity than that of acute prostatitis was observed in the prostate area around the prostatic urethra. Negative uptake in the prostate was observed in 6 of 19 patients (32%) categorized as chronic bacterial prostatitis. Interestingly, hot uptake in the prostate was exhibited in 28 (70%) of the 40 patients categorized as chronic pelvic pain syndrome.
Tc-99m ciprofloxacin imaging is helpful in the differential diagnosis of prostatitis syndrome.
Asian Journal of Andrology 10/2003; 5(3):179-83. · 1.52 Impact Factor
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ABSTRACT: This study investigated the relationships of bone mineral density (BMD) with body composition, basal metabolic rate (BMR), and fat distribution.
We measured body mass index (BMI), anthropometrics, and BMD in 345 postmenopausal women and 224 elderly men. Total body fat (TBF), fat distribution, and BMR were assessed using a body composition analyzer. Lumbar spine and proximal femur BMDs were measured with dual-energy X-ray absorptiometry.
Lumbar spine BMD was more strongly correlated with BMR (r=0.51, p<0.01) than with lean body mass (r=0.39, p<0.01) and waist hip ratio (r=-0.28, p<0.01) in postmenopausal women. The mean values of BMR in osteoporotic women were significantly lower than those for non-osteoporotic women (p<0.01). The prevalences of osteoporosis at the sites of lumbar spine and proximal femur were 32.1% and 23.3% in the women with BMR<1230 kcal, which were significantly higher than those of osteoporosis (5.4% and 7.7%) at the corresponding sites in the women with BMR> or =1230 kcal (p<0.01). In elderly men, the incidence of osteoporosis at the proximal femur was 29.5% in the subjects with BMR<1390 kcal, significantly higher than that (2.2%) in the subjects with BMR> or =1390 kcal (p<0.01).
BMR is more closely associated with bone density in elderly persons, at least as compared to TBF, BMI, or lean body mass.
Clinica Chimica Acta 07/2003; 333(1):79-84. · 2.54 Impact Factor
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ABSTRACT: To investigate the associations of body mass index (BMI) and total body fat (TBF) vs. blood lipid concentrations, we measured six anthropometric parameters, body fat mass, and serum lipid profiles in 1529 apparently healthy adults.
TBF was assessed using a body fat analyzer. Serum concentrations of triglyceride, total cholesterol, and low- or high-density lipoprotein cholesterol (LDL-C or HDL-C) were determined by standard enzymatic procedures.
Serum lipid concentrations were more strongly correlated with TBF than with BMI or waist circumference in both men and women. The mean concentrations of total cholesterol in the subjects with high fatness (TBF>95th percentile) were significantly higher than those for the subjects with low fatness (TBF<5th percentile; p<0.01), but no significant differences were observed in serum lipid levels between overweights (BMI>95th percentile) and underweights (BMI<5th percentile). The incidence of hypercholesterolemia was significantly higher in the subjects with high fatness (TBF>95th percentile) than the corresponding overweight subjects (BMI>95th percentile; p<0.01).
TBF is more strongly associated with serum lipid concentrations in adults, at least as compared to BMI.
Clinica Chimica Acta 04/2003; 329(1-2):83-7. · 2.54 Impact Factor
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ABSTRACT: This study investigated the associations between serum transferrin receptor (sTfR) concentrations and erythropoietic activities during 3 stages of iron deficiency in humans. Serum iron markers, fluorescent intensity of reticulocytes, and sTfR concentrations were measured in 227 prepubescent children, age 9 to 12 yr. Reticulocyte subpopulations were analyzed by flow cytometry and sTfR concentrations were measured by enzyme immunoassay. Mean values of middle-fluorescence reticulocytes (MFR), reticulocyte maturity index (RMI), and sTfR concentrations were significantly higher in iron-deficiency anemia subjects than in healthy controls. Reticulocyte subpopulations increased gradually, as body iron status diminished; the mean values of MFR and RMI in subjects with serum ferritin concentrations < 4.0 microg/L were 3-fold higher than those in healthy controls (p < 0.01). Correlation coefficients of MFR and RMI vs log ferritin values (r = 0.43 and r = 0.42) were higher than those of MFR and RMI vs sTfR concentrations (r = 0.24 and r = 0.27) in iron-deficiency anemia subjects. In summary, iron deficiency leads to increased production of immature reticulocytes. Erythropoietic activity is more closely associated with log ferritin values than with sTfR concentrations in iron-deficiency anemia.
Annals of clinical and laboratory science 01/2003; 33(3):279-84. · 0.96 Impact Factor
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ABSTRACT: To investigate the effects of storage temperature on the responsiveness to agonists of human platelets prepared from stored blood, we measured the aggregability and acid-base status of platelets from 96 healthy subjects before and after storage of whole blood at 4 degrees C and room temperature (RT) up to 48 hr. After 24 hr storage at 4 degrees C, there were no significant differences in agonist-induced platelet aggregability, compared to fresh specimens. When blood was kept at RT for 24 hr, all of the platelet samples showed non-responsiveness (< 20% aggregability) to epinephrine and 70% (67/96) revealed impaired responsiveness (20 to 60% aggregability) to adenosine diphosphate (ADP); there were no samples that showed impaired- or non-responsiveness to collagen or ristocetin. Among the 67 samples that showed impaired responsiveness to ADP after RT storage, 62 (93%) exhibited the loss of a secondary wave of aggregation in response to ADP. After storage of blood at RT for 48 hr (pH 6.81 +/- 0.06), mean values of maximal platelet aggregability to epinephrine, ADP, collagen, and ristocetin were 8%, 16%, 19%, and 70%, which were significantly lower than the corresponding mean values after storage of blood at 4 degrees C for 48 hr (pH 7.04 +/- 0.04) (ie, 66%, 69%, 102%, and 91%, p < 0.01). In summary, refrigerated storage of human blood improves the stability of platelet responsiveness to agonists. Storage at RT causes platelet non-responsiveness to epinephrine and disturbs the release reaction of endogenous ADP.
Annals of clinical and laboratory science 01/2003; 33(1):79-85. · 0.96 Impact Factor
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ABSTRACT: Erythropoietic activities and immature reticulocyte production were investigated in a total of 157 patients (81 men, 76 women, median age = 42 yr, range = 23 to 65 yr) with acute lymphoid leukemia (ALL, n = 31), acute myeloid leukemia (AML, n = 39), or non-Hodgkin's lymphoma (NHL, n = 87), based on assays of the hemogram, red cell indices, reticulocyte subpopulations, and intramedullary erythroid precursors. There were no significant differences in red blood cell (RBC) counts, blood hemoglobin levels, or erythroid precursors between ALL and AML patients. Reticulocytes in AML patients averaged 1.7 +/- 0.8%, which was higher than in patients with ALL (0.8 +/- 0.3%, p <0.01); the proportion of high-fluorescence reticulocytes (HFR) averaged 4-fold higher in AML versus ALL (p <0.01) and the reticulocyte maturity index (RMI) was higher in AML (20.8 +/- 8.3%) versus ALL (12.4 +/- 6.5%, p <0.01). The RMI was higher in NHL patients with bone marrow (BM) involvement (15.6 +/- 9.4%), compared to those without BM involvement (4.3 +/- 2.1%, p <0.01). The proportion of HFR averaged 11-fold higher in NHL with BM involvement versus NHL without BM involvement. In summary, erythropoietic activity is significantly more active in patients with AML compared to ALL and in patients with NHL with BM involvement, compared to NHL without BM involvement.
Annals of clinical and laboratory science 01/2003; 33(4):407-10. · 0.96 Impact Factor
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Pum Soo Kim,
Jong Wook Lee, Soo Hwan Pai,
Young Bae Kim,
Jin Kyoung Cho,
Jin Woo Lee,
Seok Jeong,
Don Haeng Lee,
Hyung Gil Kim,
Kye Sook Kwon,
Hyeon Geun Cho,
Yong Woon Shin,
Young Soo Kim
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ABSTRACT: Invasive techniques for diagnosis of Helicobacter pylori (H. pylori) infection require an endoscopic examination which is expensive and inconvenient and may cause complications. Stool cultures for H. pylori or a direct detection of H. pylori antigen in stools by PCR are expensive, tedious, and have a low sensitivity. We recently used an enzyme immunoassay (EIA) to detect H. pylori antigen in stool specimens. A total of 41 patients were seen at Inha University Hospital, Inchon, Korea between September and October 1998. There were 26 men and 15 women who had an average age of 37.6 years which ranged from 5 to 71 years in the present study. All of these patients came to the hospital complaining of an upper abdominal discomfort and were subjected to endoscopy and biopsies. Fifteen had a gastric ulcer, 13 had a duodenal ulcer, 1 had an early gastric cancer, and there were 12 chronic gastritis patients as shown by endoscopy. The biopsy specimens were examined by histology, CLO test, and cultures and these results were used as gold standards. Stool specimens were tested for the H. pylori antigen by EIA. A dual wavelength cut-off of 0.100 that was recommended by the manufacturer gave a good performance (87.1% sensitivity, 100% specificity, 100% positive predictive value, 71.4% negative predictive value, and a 90.2% efficiency). But the adjusted cut-off value using the receiver operating characteristic curve improved the performance of the test (using the cut-off value of 0.024, the sensitivity, specificity, PPV, NPV, and efficiency were 100%, 90.0%, 96.9%, 100%, and 97.6% respectively). Re-evaluation of the cut-off value may be needed for Korean patients. This technique is non-invasive, rapid, easy-to-use, and shows good performance characteristics for diagnosis of H. pylori infections. Therefore, this technique may be a substitute for gastric endoscopy especially in children and some patients who are unable to tolerate an endoscopic examination and it may be substituted for a serologic test in epidemiological research.
Yonsei Medical Journal 03/2002; 43(1):7-13. · 1.14 Impact Factor
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Haematologia 02/2002; 32(4):483-6.
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ABSTRACT: To investigate the effects of high temperature on hematologic parameters of human blood, we assessed complete blood cell counts, red cell indices, and platelet aggregability in 72 adult blood samples after exposure to varying degrees of temperature. There were no significant differences in erythrocyte counts, hemoglobin concentration, or mean corpuscular hemoglobin (MCH) between pre- and post-treated groups when blood samples were treated at 50 degrees C for 5 min. Under the same conditions, however, mean corpuscular volume (MCV) and hematocrit became significantly higher in the post-treated group (p <0.01). A dramatic increase was observed in the numbers of platelets and eosinophils measured by electronic counter: the mean numbers of platelets and eosinophils in the post-treated group (2,978.2 x 109/L and 5.58 x 10(9)/L) were significantly higher than those for the pre-treated group (246.6 x 10(9)/L and 0.15 x 10(9)/L, p < 0.01). Platelet clumps of varying size were seen in EDTA-anticoagulated blood after exposure to 46 degrees C for 90 sec; however, these clumps were not detected in citrate-, heparinized-, or washed EDTA-anticoagulated blood. Platelet aggregability to various agonists was profoundly decreased after treating the blood at 43 degrees C for 5 min. In summary, this study shows that critical changes of hematologic parameters occur when blood is exposed to 50 degrees C, and that the anticoagulating property of EDTA is altered upon exposure to high temperature.
Annals of clinical and laboratory science 02/2002; 32(4):393-8. · 0.96 Impact Factor
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ABSTRACT: To investigate the changes in nitric oxide (NO) production during and after normal pregnancy and in pregnancies complicated by preeclampsia, we measured serum nitrates and nitrites (NOx) concentrations and serum iron markers in 347 subjects. Serum NOx concentrations were determined after reduction of nitrates to nitrites using the Griess reaction. Serum iron and serum ferritin were assayed using an automatic chemical analyzer and a chemiluminescence method. Serum NOx concentrations were significantly higher in the first trimester (117.3 +/- 31.4 microM) than in nonpregnant women (23.8 +/- 7.1 microM). High NOx concentrations persisted throughout normal pregnancy, irrespective of serum ferritin concentrations, and returned to nonpregnant levels by 9-12 wk postpartum. Mean NOx concentrations in preeclamptic women were 43.1 +/- 12.7 microM, which were significantly lower than those in the gestation age-matched normal pregnant women (249.7 +/- 51.3 microM). In summary, NO production increases with advancing gestation during normal pregnancy and decreases in preeclampsia, regardless of serum ferritin concentrations. Elevated NOx concentrations during pregnancy return to normal within 12 wk after delivery.
Annals of clinical and laboratory science 02/2002; 32(3):257-63. · 0.96 Impact Factor
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Yonggoo Kim,
Dong Chan Jin,
Eun Jung Lee,
Duck Hyun Lee,
Hyun Hee Chung,
Myungshin Kim,
Jihyang Lim,
Ahwon Lee,
Kyo Young Lee,
Chang Suk Kang,
Kyungja Han, Soo Hwan Pai
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ABSTRACT: We quantified the formed elements of urine sediment using newly designed plastic centrifuge tubes with top and bottom openings and a 0.5 ml sized bottom ball (YZ tube). This design minimizes the adherence of formed elements that occurs on the glass surface of conventional tubes. The numbers of white blood cells (WBC) and red blood cells (RBC) using glass tubes did not differ from those observed using YZ tubes. However, the YZ tube method detected renal casts more frequently than the conventional glass tube method; the detection rate for renal casts in normal urine samples was 21.4% vs 2.9%, in samples from hospitalized patients it was 47.5% vs 10.2%, and from patients with kidney disease it was 88.9% vs. 44.4%. Especially, the YZ tube method detected more hyaline casts in all types of samples. The correlation between the glass tube and YZ tube methods was good for WBC (r=0.996), RBC (r=0.964), and epithelial cell count (r=0.939), but the correlation was weak for casts (r=0.511 for hyaline casts; r=0.359 for other casts). In conclusion, the YZ tube method of urine sediment analyses is an easy and accurate quantitative method; it is recommended as the method of choice for detecting and quantifying pathological casts in urine. (received
Annals of clinical and laboratory science 02/2002; 32(1):55-60. · 0.96 Impact Factor
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ABSTRACT: To investigate the relationships between obesity and serum lipid concentrations, we measured eight anthropometric parameters, body mass index (BMI), total body fat (TBF), and serum lipid profiles in 790 apparently healthy adolescents. TBF was assessed using a body fat analyzer. Serum concentrations of triglyceride, total cholesterol, and low- or high-density lipoprotein-cholesterol (LDL-C or HDL-C) were determined by standard enzymatic procedures. There were no significant differences in serum lipid concentrations between obese adolescents (BMI > or = 95th percentile) and lean adolescents (BMI < 5th percentile), nor between overweights (BMI > 25 kg/m2) and underweights (BMI < 19 kg/m2). However, serum lipid concentrations were significantly higher in males with TBF > 37% (TBF > 95th percentile) than in males with TBF < 6% (TBF < 5th percentile; p < 0.01). Serum lipid concentrations were more strongly correlated with TBF than with BMI. Correlation coefficients between serum lipid concentrations and TBF were higher in males than in females for cholesterol (r = 0.37 vs 0.23), triglycerides (r = 0.29 vs 0.27), HDL-C (r = -0.34 vs 0.12), and LDL-C (r = 0.24 vs 0.15). In short, compared to BMI, TBF reflects serum lipid concentrations more closely. During adolescence, the association between TBF and serum lipid concentrations is stronger in males than in females.
Annals of clinical and laboratory science 01/2002; 32(3):271-8. · 0.96 Impact Factor
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Wonbae Lee,
Yonggoo Kim,
Jihyang Lim,
Myungshin Kim,
Eun Jung Lee,
Ahwon Lee,
Kyo Young Lee,
Chang Suk Kang,
So-Young Kim,
Kyungja Han, Soo Hwan Pai
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ABSTRACT: We have developed a new and simple flow cytometric method to detect damaged red blood cells (RBCs) using anti-Hb in hypotonic solution. We studied a total of 200 patients, including 62 patients with schistocytosis, 8 postsplenectomy patients, and 108 healthy controls. Peripheral blood (2 microl) was stained with phycoerythrin-conjugated (PE) antihemoglobin antibody (anti-Hb) in 0.6% (w/v) NaCl solution, and analyzed by flow cytometry omitting the washing step. The proportion of RBCs stained by anti-Hb was 0.55% (SD +/-0.23%) in normal controls and was significantly higher in patients with schistocytosis (2.95+/-2.95%, p <0.001). Six of 108 blood samples from normal controls and 60 of 62 samples from schistocytosis patients showed > or =1.01% stained RBCs (ie, values > mean+2SD of normal controls). The number of schistocytes counted by microscopic examination correlated with the proportion of RBCs stained by anti-Hb (r = 0.637, p <0.001). The proportions of stained RBCs in blood samples with malaria, spherocytosis, and elliptocytosis were also significantly higher than in normal controls. However, the results in postsplenectomy and iron-deficiency anemia (IDA) patients were not significantly different from the normal controls; the number of schistocytes in postsplenectomy patients was not related to the proportion of RBCs stained by anti-Hb. Based on these findings, flow cytometry of damaged RBCs using anti-Hb in hypotonic solution is a simple, sensitive, and accurate method to detect active hemolysis.
Annals of clinical and laboratory science 01/2002; 32(1):37-43. · 0.96 Impact Factor
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ABSTRACT: Background. A few cases relating H. pylori infection to iron-deficiency anemia have been described recently. We investigated the role of H. pylori infection in iron-deficiency anemia in preadolescent children and adolescents.Patients and Methods. We conducted a double-blind, placebo-controlled therapeutic trial in 43 subjects (mean age, 15.4 years) with iron-deficiency anemia. Endoscopy was performed, and biopsy specimens were examined by urease test and histological analysis. Twenty-two of 25 H. pylori–positive patients were assigned randomly to three groups. Group A patients were given oral ferrous sulfate and a 2-week course of bismuth subcitrate, amoxicillin, and metronidazole. Group B patients were given placebo for iron and a 2-week course of triple therapy. Group C patients were given oral ferrous sulfate and a 2-week course of placebo. Iron status was reassessed 4 weeks and 8 weeks after the 2-week regimen ended.Results. Of the 43 subjects with iron-deficiency anemia, 25 (58.1%) had H. pylori in the antrum. Group A and B subjects, who received eradication therapy, showed a significant increase in hemoglobin level as compared with group C subjects at 8 weeks after therapy (p = .0086).Conclusions. Treatment of H. pylori infection was associated with more rapid response to oral iron therapy as compared with the use of iron therapy alone. Such treatment also led to enhanced iron absorption even in those subjects who did not receive oral iron therapy.
Helicobacter 12/2001; 4(2):135 - 139. · 3.15 Impact Factor
