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1.
No previous study has investigated the full range of complete blood count (CBC) parameters in small-for-gestational-age (SGA) newborns. The main aim of this study was to compare CBC and peripheral smear parameters in term, healthy SGA neonates and appropriate-for-gestational-age (AGA) neonates, and to establish CBC reference values for full-term SGA newborns. One hundred thirty-two healthy, term newborns (73 SGA and 59 AGA) were included. On day 1, we obtained 109 samples and on day 7 we obtained 77 samples. A CBC and peripheral smear were analyzed for each sample collected and group data were compared. We observed higher mean values for normoblast count, hemoglobin, hematocrit, and red blood cell (RBC) count in the SGA babies than in the AGA babies on day 1. The mean corpuscular hemoglobin and mean corpuscular hemoglobin concentration values for the SGA babies were decreased because of the relatively high RBC count and relatively high mean corpuscular volume we observed in this group. Of the SGA newborns, 21.9% had neutropenia and 4.7% had absolute neutrophil counts lower than 1500/microl on day 1. On both day 1 and day 7, the SGA newborns had higher mean absolute metamyelocyte counts and higher mean I : T (immature : total neutrophil ratio) values than the AGA group. The SGA babies had a lower mean absolute lymphocyte count on day 7 than the AGA group. We detected thrombocytopenia in almost one-third of the 64 SGA newborns tested on day 1. In summary, our study clearly demonstrates that CBC parameters for healthy, full-term, SGA newborns are different from those of healthy, term AGA newborns. This is the first study that has documented different mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration, metamyelocyte counts, lymphocyte counts, and I : T in SGA babies compared with AGA babies.  相似文献   

2.
The normal capillary and venous hematologic values for neonates have not been defined clearly. It is well known that capillary blood has higher hemoglobin (Hb) and hematocrit (Hct) values than venous blood. In a recent study, we reported differences between capillary and venous complete blood counts (CBC) in healthy term neonates on day 1 of life. The aim of this study was to extend our previous investigation. Term neonates (n=141) were stratified into four groups by days of postnatal age: group 2 (day 7, n=38), group 3 (day 14, n=35), group 4 (day 21, n=32) and, group 5 (day 28, n=36). Data from our previous study were included in the statistical analysis as group 1 (day 1, n=95). A CBC and differential count were carried out on each capillary and venous sample drawn simultaneously. Within each group, the mean and standard deviation for each parameter in capillary and venous blood were calculated and then compared using the paired sample t-test. In all groups, the capillary blood samples had higher Hb, Hct, red blood cell (RBC), white blood cell (WBC), and lymphocyte counts. In each group, venous platelet counts were significantly higher than the corresponding capillary values. There was also a trend toward higher venous mean corpuscular volume, higher capillary polymorphonuclear leukocyte (PML) count and mean platelet volume in all groups. In both capillary and venous blood, Hb, Hct, RBC, MCV values and WBC, lymphocyte, PML counts decreased and platelet counts increased steadily during neonatal period. This study reveals that CBC parameters and differential counts may differ depending on the blood sampling used. The findings underline the importance of considering the sample source when using hematologic reference ranges for healthy or septic neonates. When interpreting results, the term 'peripheral blood' should be replaced with 'capillary blood' or 'venous blood' so that an accurate assessment can be made.  相似文献   

3.
The BC-3200 automated hematology analyzer was evaluated and compared with the Beckman-Coulter AcT (Ac.T diff 2) 3-part differential hematology analyzer. The BC-3200 was evaluated according to guidelines published by the International Committee for Standardization in Hematology (ICSH), Clinical and Laboratory Standards Institute (CLSI), and Department of Food and Drug Administration (FDA). The results demonstrated no background, minimal carryover (<0.5%), and excellent linearity for hemoglobin (Hb) level, white blood cell (WBC), red blood cell (RBC), and platelet (PLT) counts (>0.998). Precision was generally acceptable for all complete blood count (CBC) parameters; coefficients of variation (CVs) were within the manufacturer's claims and CVs of CBC parameters, including WBC, RBC and PLT counts, Hb and mean corpuscular volume, were <6%. Correlation between the BC-3200 and Ac.T diff 2 was excellent (r > 0.98) for all major CBC parameters (WBC, RBC, and PLT counts and Hb). We conclude that the overall performance of the BC-3200 is excellent and compares well with that of the Coulter Ac.T diff 2.  相似文献   

4.
Capillary Hb concentration on the first day of life was registered in 201 infants with weight appropriate for gestational age (AGA) and in 99 infants small for gestational age (SGA). In both groups Hb increased towards term (P < 0.01), while the SGA infants reached higher Hb concentration at term (21.5 ± 1.9 g/dl; mean ± SD) than the AGA infants (17.9 ± 1.5 g/dl) (P < 0.001). The cord serum erythro-poietin (EP) level increased towards term equally in both groups. Delivery did not seem to influence the EP level as same values were obtained in cord serum from infants delivered by elective cesarean section as after uncomplicated vaginal delivery. No correlation was found between cord serum EP and first day capillary PCV. Postnatally a rapid fall in the EP level occurred. In healthy adults no serum EP activity was detected. It is suggested that increasing hypoxia, rapid growth, and shift from hepatic to myeloid erythropoiesis may be related to the increasing Hb concentration and serum EP level towards term. Improvement of oxygenation during air breathing may cause the decreasing serum EP level after birth.  相似文献   

5.
Body mass index (BMI), the prevalent indicator of obesity, is not easily grasped by patients nor physicians. Waist circumference (WC) is correlated to obesity, is better understood and has a stronger relationship to the metabolic syndrome. We compiled WC, complete blood count (CBC) parameters as well as other pertinent data of 6766 25–55‐year‐old US volunteers sampled in the US National Health and Nutrition Examination Survey, in the years 2005–2010. To determine reference intervals of typical US patients visiting their clinician, we used minimal exclusion criteria. We compiled hemoglobin, red blood cell count, hematocrit, mean corpuscular volume (MCV), mean corpuscular hemoglobin concentration, mean cell hemoglobin (MCH), red cell distribution width (RDW), platelet count, mean platelet volume, and counts of white blood cells (WBC), neutrophils, lymphocytes, monocytes, eosinophils, and basophils. In addition, we also compiled serum C reactive protein and serum iron. The three major US races were studied and reference interval diagrams were constructed for each CBC parameter plotted against WC. WBC count, RDW, lymphocyte, neutrophil, and red blood cell count increase with WC. Conversely, serum iron and MCH and MCV decrease. These relationships may be related to insulin resistance and chronic activation of the immune system and the resulting low‐grade inflammatory state. WC is a strong predictor for many CBC parameters, suggesting that WC should be taken into account when evaluating blood count results. Clinicians who take care of obese patients should be aware of altered hematology and investigate and treat accordingly. Am. J. Hematol. 89:671–677, 2014. © 2014 Wiley Periodicals, Inc.  相似文献   

6.
We evaluated assays of the same fresh blood samples with six different types of reference automated hematology analyzers developed by the following manufacturers: Beckman Coulter, Sysmex, Bayer, Abbott, Nihon Kohden and Horiba. Fresh whole blood samples treated with dipotassium ethylenediaminetetraacetic acid (EDTA K2) were collected from three healthy adult volunteers. The complete blood counts (CBC) including red blood cell count (RBC), hemoglobin (Hgb), hematocrit (Hct), mean corpuscular volume (MCV), white blood cell count (WBC), platelet count (Plt), reticulocyte percentage (Ret) and leukocyte differential counts including % neutrophils (Neu), % lymphocytes (Lym) and % monocytes (Mon) were surveyed with a reference automated hematology analyzer from each manufacturer. The process from sampling to analysis was performed according to procedures in hospital clinical laboratories. RBC, Hgb, Hct and MCV exhibited allowable differences within 5% of mean value among all instruments. Large differences greater than 10% of mean value in WBC, Neu and Lym between Horiba and other manufacturers, and in Plt between Nihon Kohden and other manufacturers, were observed. Ret and Mon exhibited large differences over 10% of mean value among almost all of the instruments tested. This survey suggests that all parameters exhibiting differences greater than 10% of mean value among instruments should be improved for clinical use to ensure good external quality control in blood cell counting and leukocyte differential counting using automated instruments.  相似文献   

7.
Combined deficiencies of iron and cobalamin are common. The aims of this study were to investigate the significance of the parameters of the complete blood count (CBC) in differentiating microcytic anemia due to pure iron deficiency anemia (IDA) from anemia due to combined deficiencies of vitamin B(12) and iron (IDA-B12). The study was carried out with 122 patients (100 female) who had microcytic red blood cell indices with IDA-B12 and 105 patients (95 female) with IDA. Group IDA-B12 patients had decreased hemoglobin levels, mean corpuscular volumes, mean corpuscular hemoglobin (MCH) levels, and MCH concentrations but had increased platelet counts (PLT). Using these parameters, we developed a PLT/MCH ratio parameter that has high values when IDA is accompanied by cobalamin deficiency. The cutoff value of >12.00, with a 74.6% sensitivity and a 41.9% specificity, appears to be the most convenient value for screening. We advise measuring the levels of cobalamin in patients with IDA associated with a high PLT/MCH ratio.  相似文献   

8.
Basal plasma GH levels and the GH responses to an injection of 1 microgram/kg 1-44(NH2) GHRH were determined on day 3 postnatally in 5 small gestational age (SGA) twin newborns and their appropriate gestational age (AGA) co-twins, and in 10 SGA singleton newborns and 6 AGA singleton newborns. The mean basal plasma GH level was higher in the SGA than in the AGA infants but the difference was significant only for singleton newborns (p less than 0.01). The mean peak plasma GH level was markedly increased in SGA compared to AGA infants (p less than 0.05 for twins, p less than 0.01 for singletons). Twelve SGA infants re-tested at 1 month had lower basal and peak plasma GH levels (p less than 0.001 and p less than 0.01). In 21 SGA and 17 AGA infants, serum IGF-I, measured by RIA between 12 and 96 hours after birth, was significantly higher in SGA than in AGA (p less than 0.001). These results suggest that, whatever the mechanism, functional hypersomatotropism is present at day 3 in SGA infants. This hypersomatotropism may participate in the early catch-up growth process.  相似文献   

9.
Preeclampsia is a condition that might severely impact the health of mothers and their newborns. The aim of this investigation is to examine hematological parameters in mothers with preeclampsia and umbilical cord blood. Eighty preecalmptic mothers were recruited in the study. In addition, eighty normal pregnant mothers served as controls. Hematological parameters that include hemoglobin (Hb), red blood cell count (RBC), red cell distribution width (RDW), packed cell volume (PCV), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), white blood cell counts (WBC), platelet counts, mean platelet volume (MPV) and Platelet large cell ratio (PLCR) were examined. Results showed a strong association between preeclampsia and low birth weight, premature/cesarean delivery and proteinuria (P < 0.001). Hb and neutrophils were significantly lower (P < 0.01), whereas RDW, PCV, MCV, MCH, MCHC and lymphocytes were significantly higher than normal ones (P < 0.01). When cord blood of preeclamptic mothers were compared with that of normal ones, similar findings were observed. In addition, results showed significant and positive correlations between preeclamptic mothers and their newborn in Hb (r2 = 0.075, P < 0.05), PCV (r2 = 0.084, P < 0.01), MCV (r2 = 0.077, P < 0.05), MCHC (r2 = 0.115, P < 0.01), RBC (r2 = 0.086, P < 0.01) and retics (r2 = 0.306, P < 0.01). In conclusion, changes in several hematological parameters associated with preeclampsia were correlated in affected mothers and their newborns. Such biomarkers can be used to predict pregnancy outcomes in women with preeclampsia.  相似文献   

10.
Objectives: To provide reference values for haematological indices in Spanish adolescents according to age and gender. Methods: A cross sectional study conducted in five Spanish cities was performed. Blood was drawn from a representative sample of 581 adolescents with age ranging from 13 to 17–18.5 yr. Age‐ and gender‐specific means, standard deviations and percentiles were determined for the following parameters: total red blood cell counts (RBC), haemoglobin concentration (Hb), haematocrit percentage (Hct), mean corpuscular volume (MCV), mean corpuscular haemoglobin, mean corpuscular haemoglobin concentration, red cell distribution width and total white blood cell (WBC) counts as well as counts and percentage of neutrophils, lymphocytes, monocytes, eosinophils and basophils; platelet count (PLT), mean platelet volume and plateletcrit percentage. Results: Younger male subjects presented lower RBC, Hb, Hct and MCV means that their older counterpart. By contrast these differences were not observed in female subjects. As expected, RBC, Hb and Hct mean values in males were found significantly higher than in girls for all studied age groups. No significant differences were observed in WBC by age and gender. PLT values gradually decreased with age, except for females aged 17–18.5 yr. Conclusion: The present study provides reference data on the distribution of haematological indices of Spanish adolescents. These data can be useful biomarkers of the nutritional status in adolescents.  相似文献   

11.
The Sysmex SE‐9c500 is a new, fully automated haematology analyser, providing a complete blood count (CBC), including a five‐part differential count (DC), with flagging of morphological abnormalities. The SE‐9500 was evaluated according to guidelines published by the International Committee for Standardisation in Haematology (ICSH). The results demonstrated minimal carryover (< 0.01%) and excellent linearity for WBC, RBC, HGB and platelet (PLT) (r > 0.995). Samples were stable with regard to CBC parameters after storage for up to 48 h at room temperature (RT) and 4 °C. Imprecision was generally acceptable for all CBC parameters (CV < 5%). Correlation between the SE‐9500 and reference methods was excellent (r > 0.97) for all the major CBC parameters (WBC, RBC, HGB, PLT). There was minimal interference for WBC, RBC, HGB and PLT at high concentrations of bilirubin (BIL=224 μmol/l) or triglyceride (TG=7.78 mmol/l). SE‐9500 reference values for CBC parameters are presented. Our results indicate that the SE‐9500 is an excellent tool for routine haematological examination.  相似文献   

12.
13.
Erythrocyte parameters in 292 unselected geriatric patients were studied retrospectively. Statistically significant mean decreases compared to the laboratories' normal mean values were found in the red blood cell count (RBC), hemoglobin level, hematocrit, and mean corpuscular hemoglobin concentration; there also was a slight increase in mean corpuscular volume and mean corpuscular hemoglobin. However, when 17 patients with a hemoglobin level less than 10 gm/dl or a hematocrit reading less than 35 percent were excluded, all of the mean values for erythrocyte parameters fell within the normal range. In 71 percent of these 17 patients the etiology of the anemia was documented. Although one cannot definitely exclude a slight change in erythrocyte parameters with aging, it is concluded that the establishment of so-called new geriatric norms is premature, as the population studied included patients with various diseases. Good medical practice dictates continued evaluation and monitoring of patients in whom erythrocyte values are outside the established normal ranges.  相似文献   

14.
CONTEXT: Fetal development is thought to be gender specific for adiposity and circulating insulin and IGF-I but not adipokinemia, as judged by serum visfatin and adiponectin at term birth. We studied the potential relationship between these gender specificities and fetal growth. SETTING: The study was conducted at a university hospital. STUDY POPULATION: Subjects included 96 strictly matched neonates born appropriate for gestational age (AGA; 24 girls, 24 boys) or small for gestational age (SGA; 24 girls, 24 boys). MAIN OUTCOMES: Outcomes included serum insulin, IGF-I, visfatin, total and high-molecular-weight (HMW) adiponectin, osteocalcin at term birth, and neonatal body composition by absorptiometry. RESULTS: Cord insulin and IGF-I levels were higher in girls than boys (P < or = 0.01), in both the AGA and SGA subpopulation. In AGA newborns, fat and lean mass were each gender specific (P < 0.0001), whereas visfatin and total and HMW adiponectin were not. Conversely, in SGA newborns, visfatin and HMW adiponectin were gender specific (higher levels in girls), whereas body adiposity was not. In SGA fetuses, the distribution of adiponectin isoforms was in both genders shifted toward HMW (P < 0.005 vs. AGA). Cord osteocalcin did not differ by either gender or birth weight. CONCLUSION: At term birth, the gender specificity of adiposity and circulating visfatin and HMW adiponectin appeared to depend on prenatal growth, whereas the gender specificity of insulin and IGF-I levels did not. The fetal shift in adiponectin isoforms may contribute to explain why SGA newborns tend to be hypersensitive to insulin.  相似文献   

15.
Mitochondrial DNA 5178 C/A (mt5178 C/A), namely NADH dehydrogenase subunit 2 237 Leu/Met, polymorphism is as reported in literature associated with longevity and susceptibility to ischemic heart disease or cerebrovascular disorders in the Japanese population. Previous reports suggested that mt5178A genotype exerts antiatherogenic effects. The aim of this study was to investigate whether mt5178 C/A polymorphism is associated with hematological parameters, such as thrombogenic risk factors for myocardial infarction and stroke, in 321 healthy Japanese men. No significant differences were observed between mt5178 C/A genotypes, but in subjects with body mass index (BMI) of < or = 23, this polymorphism influenced the effects of habitual smoking on hematological parameters. Red blood cell (RBC) counts were significantly lower and mean corpuscular hemoglobin (MCH) levels were significantly higher in smokers with mt5178A than nonsmokers with mt5178A. Platelet counts were significantly higher in smokers with mt5178C than nonsmokers with mt5178C. Cigarette consumption was strongly associated with RBC counts, mean corpuscular volume levels, and MCH levels for men with mt5178A, and was associated with platelet counts for those with mt5178C. Moreover, BMI was significantly positively associated with RBC counts and platelet counts only in men with mt5178A, age was significantly negatively associated with RBC counts only in men with mt5178C. These data suggest that mt5178 C/A polymorphism may influence the effects of cigarette smoking on hematological parameters in healthy BMI < or = 23 Japanese men.  相似文献   

16.
Several lines of evidence have suggested a role of the GH/IGF-I axis in the regulation of hemochrome. Many studies have been carried out in GH deficient children and adults about this topic, reporting predominantly a positive effect of recombinant human GH (rhGH) on red series, with no action on serum leucocytes and platelets counts. The aim of this study was to assess the impact of GH deficiency (GHD) and of rhGH replacement on blood cells count in 17 pre-pubertal children with idiopathic isolated GHD (11 males and 6 females, aged 9.1+/-0.8 yr) and in 18 patients with adult-onset GHD (12 males and 6 females, aged 47.9+/-3.0 yr). Evaluation of absolute and SD score (SDS) values of red blood cells, hemoglobin, hematocrit, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration, platelets and white blood cells was performed at baseline and after 12 months of rhGH treatment (0.045+/-0.001 mg/kg bw/day and 4.2+/-0.5 microg/kg bw/day for children and adults, respectively). At baseline, all patients showed low IGF-I levels. Effectiveness of rhGH therapy was documented by significant increase in height SDS, height velocity and serum IGF-I levels in children. In adults, adequacy of rhGH was demonstrated by significant increase in serum IGF-I and significant decrease in body fat. At baseline, about 25% of patients (4 of 17 children and 4 of 18 adults) showed normochromic normocytic anemia, while the other indices were normal. In 7 of the 8 anemic patients, normal levels of hemoglobin were restored on rhGH, while no change in all the other indices was observed. In conclusion, rhGH therapy at physiological doses has no effect on erythropoiesis in GHD children and adults with normal blood cells count, while in patients with normochromic normocytic anemia rhGH is able to restore normal hemoglobin levels.  相似文献   

17.
We prospectively studied the dose‐dependent effect of transfused stored red blood cells (RBCs) on recipient RBC indices, deformability and cell density in 10 patients administered stored RBCs for blood transfusion during general surgery. There were dose‐dependent decreases in mean corpuscular volume and increases in mean corpuscular haemoglobin concentration after completion of 4‐ and 6‐unit stored RBC transfusions. The amount of dense populations increased proportionately with the amount of stored RBCs transfused. The maximal deformability index value was significantly and dose‐dependently decreased, suggesting that hemodynamic blood flow, especially the microcirculation may be impaired in patients who receive large amounts of stored RBCs.  相似文献   

18.
The hormone erythropoietin (EPO) is responsible for the increased production of red blood cells (RBC) in response to tissue hypoxia. While the role of EPO in hematological development has been established in humans and terrestrial mammals, this relationship has never been examined in marine mammals that rely heavily on stored oxygen to maintain aerobic metabolism while diving. Since blood is the major oxygen storage site in marine mammals, it was hypothesized that EPO may have a significant influence on the development of hematology parameters associated with the expansion of blood oxygen stores during development. To explore this hypothesis, serum EPO concentrations were determined by radioimmunoassay in 235 free-ranging Steller sea lions (Eumetopias jubatus), throughout their Alaskan range. Hematocrit (Hct), hemoglobin (Hb), and red blood cell (RBC) counts were also measured, and mean corpuscular hemoglobin content (MCHC), mean corpuscular volume (MCV), and mean corpuscular hemoglobin (MCV) values determined. Erythropoietin and most hematological parameters varied with age. Hematocrit, Hb, RBC, and MCHC decreased after birth, reached their lowest values at two to three months of age, and then increased to values similar to those of adults by five months of age. Since changes in Hct and Hb account for the majority of the changes in blood oxygen stores and EPO was negatively correlated with both, it appears that EPO may play an important role in blood development of Steller sea lions, similar to previous studies on terrestrial mammals.  相似文献   

19.
Anemia is the most common hematologic manifestation of human immunodeficiency virus (HIV) infection and acquired immunodeficiency syndrome. The causes of HIV-related anemia are multifactorial and include direct and indirect effects of HIV infection. HIV-related anemia generally is due to reduced red blood cell (RBC) production, secondary to a variety of causes, but it may also involve nutritional deficiencies, increased RBC destruction, or a combination of these problems. Evaluation of hemoglobin level, reticulocyte count, bilirubin, and mean corpuscular volume value and review of the peripheral blood smear are necessary for diagnosis. Treatment of HIV-related anemia should address the correctable underlying causes of this disorder, such as modifications of offending medications, nutritional deficiencies, and parvovirus infection. Patients with HIV infection have a blunted erythropoietin response to anemia. Therapeutic modalities for anemia that is not amenable to correction include blood transfusion and recombinant human erythropoietin (epoetin alfa).  相似文献   

20.
Channa punctatus was exposed to four different concentrations of Rutin, Taraxerol and Apigenin. Changes in some hematological parameters of Channa punctatus were assessed to determine the influence of these compounds on test fish. Fish were exposed to sublethal concentrations (80% of LC50 of 24h) of these compounds for one week. Control fish were also administered for one week. Thereafter, blood samples were obtained from the control and experimental fish. Blood was assayed for selected hematological parameters (hematocrit, hemoglobin, red blood cell count, white blood cell count total plasma protein and plasma glucose concentration). The derived hematological indices of mean corpuscular hemoglobin concentration (MCHC), mean corpuscular hemoglobin (MCH) and mean corpuscular volume (MCV) were calculated. Sublethal concentrations of these compounds caused a dose dependent decrease in hemoglobin values coupled with a decrease in hematocrit values and red blood cell counts are an obvious indication of anemia. The total white blood cell counts and the differential white blood cell counts were decreased except for the lymphocytes, where there was a slight increase. Plasma protein and glucose were also lower in exposed fish when compared with control. The hematological indices MCH, MCHC, MCV were also lowered. The result from this study reveals high mortality rate and deleterious consequences on the health of fish subjected to acute exposure of Rutin, Taraxerol and Apigenin and therefore, should not be used directly in aquaculture without having the proper knowledge.  相似文献   

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