scholarly journals Malaria Parasite Density Estimated with White Blood Cells Count Reference Value Agrees with Density Estimated with Absolute in Children Less Than 5 Years in Central Ghana

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Dennis Adu-Gyasi ◽  
Kwaku Poku Asante ◽  
Sam Newton ◽  
Sabastina Amoako ◽  
David Dosoo ◽  
...  
Keyword(s):  
Reference Values ◽  
Parasite Density ◽  
Blood Cells ◽  
Malaria Parasite ◽  
Geometric Mean ◽  
White Blood Cells ◽  
Laboratory Data ◽  
Age Groups ◽  
Reference Value ◽  
The Difference

Introduction. The estimation of malaria parasite density using a microscope heavily relies on White Blood Cells (WBCs) counts. An assumed WBCs count of 8000/µL has been accepted as reasonably accurate in estimating malaria parasite densities due to the challenge to accurately determine WBCs count. Method. The study used 4944 pieces of laboratory data of consented participants of age group less than 5 years. The study compared parasite densities of absolute WBCs, assumed WBCs, and the WBCs reference values in Central Ghana. Ethical approvals were given by three ethics committees. Results. The mean (±SD) WBCs and geometric mean parasite density (GMPD) were 10500/µL (±4.1) and 10644/µL (95% CI 9986/µL to 11346/µL), respectively. The difference in the GMPD compared using absolute WBCs and densities of assumed WBCs was significantly lower. The difference in GMPD obtained with an assumed WBCs count and that of the WBCs reference values for the study area, 10400/µL and 9200/µL for children in different age groups, were not significant. Discussion. Significant errors could result when assumed WBCs count is used to estimate malaria parasite density in children. GMPD generated with WBCs reference values statistically agreed with density from the absolute WBCs. When obtaining absolute WBC is not possible, the reference value can be used to estimate parasite density.

scholarly journals Changes in Haematological Parameters in Plasmodium falciparum Infected Malaria Patients in an Urban Slum of Lagos, Nigeria

2020 ◽  
pp. 20-29
Author(s):  
U. O. Ozojiofor ◽  
O. O. Bankole ◽  
N. Anene ◽  
A. U. Hassan ◽  
S. A. Emaleku
Keyword(s):  
Red Blood Cells ◽  
Parasite Density ◽  
Blood Cells ◽  
Malaria Parasite ◽  
Human Subjects ◽  
White Blood Cells ◽  
Urban Slum ◽  
Haematological Parameters ◽  
Distribution Width ◽  
The Mean

The present study was carried to determine the changes in haematological parameters in P. falciparum infected patients in Ajeromi Ifelodun area of Lagos, Nigeria. Seventy (70) human subjects comprising of 50 P. falciparum malarial infected and 20 non-infected (control) subjects between 10-60 years were selected for this study. RDT test and microscopy were carried out to ascertain the presence of P. falciparum. They were grouped based on age criteria and level of parasitaemia. This work was carried out in the Department of Biochemistry, Nigeria Institute for Medical Research Laboratory, Yaba, Lagos, Nigeria between August 2016 and January 2017. Blood samples were collected for the determination of P. falciparum, level of parasitaemia and haematological parameters. Haematological parameters were determined using a Coulter A-T Pierce haematology analyzer (Beckman Coulter, Inc. Fullerton, CA, USA), P. falciparum was determined by rapid diagnostic test (RDT) and Microscopy. There was a significant increase in the mean level of total white blood cells (WBC) and red blood cells distribution width (RDW), and a significant decrease in the mean level of haematocrit (HCT), haemoglobin (HGB), red blood cells (RBC), and platelets (PLT) in the malaria infected patients than in the controls (p<0.05). There was also a higher malaria parasite density among malaria infected patients for ages above 20 and a lower malaria parasite density for ages below 20 in this study. The findings of this study show that infection with P. falciparum produces changes in haematological parameters in those infected and tested positive for malaria. The most commonly affected parameters are haemoglobin, haematocrit, white blood cells and platelet count.

scholarly journals Malaria Parasite Density Estimation using Actual and Assumed White Blood Cells Count in Children in Eastern Sudan

2015 ◽  
Vol 62 (2) ◽  
pp. 171-175 ◽  
Author(s):  
Jalal A. Bilal ◽  
Gasim I. Gasim ◽  
Amani H. Karsani ◽  
Leana M. Elbashir ◽  
Ishag Adam
Keyword(s):  
Density Estimation ◽  
Parasite Density ◽  
Blood Cells ◽  
Malaria Parasite ◽  
White Blood Cells ◽  
Eastern Sudan

Hematological condition of breeding bulls after a long winter period of operation in the conditions of the Udmurt Republic

2022 ◽  
pp. 67-73
Author(s):  
A. Abilov ◽  
A. Azhmyakov ◽  
I. Novgorodova ◽  
N. Bogolyubova
Keyword(s):  
Red Blood Cells ◽  
Reference Values ◽  
Blood Cells ◽  
Hematological Parameters ◽  
White Blood Cells ◽  
Winter Period ◽  
Black And White ◽  
Significant Difference ◽  
White Breed ◽  
Udmurt Republic

Purpose: to study hematological parameters of blood in bulls-producers of dairy breeds on the day of semen collection in the Udmurt Republic after a long winter period of operation, depending on the breeds, age and place of selection.Materials and methods. The work was performed at the Federal Research Center for Animal Husbandry named after Academy Member L. K. Ernst on the basis of AO "Udmurtplem" of the Udmurt Republic in the period from 2020 to 2021 on dairy bulls (n=20) aged 15-69 months, including a purebred Holstein breed of domestic selection (n=6), a Holstein black-and-white breed of European selection (the Netherlands, n=6), a black-and-white breed with blood transfusion on Holsteins on at the level of 94-98% (n=8). The content of white blood cells, red blood cells, hemoglobin and hematocrit, depending on age and breed, was studied on the ABC VET hematological analyzer on the day of taking the seed.Results. It was found that on average, in 20 bulls aged 15-69 months, the level of white blood cells was at the level of reference values of 8.8±0.25 x 109/l, red blood cells 10.3 x 1012/l, which is 50% more than the reference values. The concentration of hemoglobin is 128.0±2.92 g/l, hematocrit is on average 54.3%, with a norm of 24-46%. Breeding bulls at a reliable level, differing in age, showed that some animals had high indicators for red blood cells of 10.3±0.26 x 102, for hematocrit of 54.3% against 24-46% of reference values. Also, according to hematological indicators, there was a tendency to increase the concentration of hemoglobin and hematocrit in European-bred bulls.Conclusion. The study of the variability in hematological parameters depending on the selection showed that there is no significant difference in leukocytes and all indicators are at the level of reference values, and in erythrocytes more than 50% than the highest indicators. The highest hemoglobin values were at the level of 141-156 g/l instead of 128 g/l according to the highest reference values. Hematocrit also showed high max values in all groups in comparison with the reference values of 59-66% versus 46% in the norm. It is necessary when analyzing hematological blood parameters in addition to the average statistical indicators (M+m) also, monitor the variability (min-max) in order to obtain more objective information.

The approximate formulas predicting personal somatic telomere length using patient blood test data

2019 ◽  
Vol 97 (11) ◽  
pp. 1090-1093
Author(s):  
Toyoki Maeda ◽  
Takahiko Horiuchi ◽  
Naoki Makino
Keyword(s):  
Telomere Length ◽  
Test Data ◽  
Blood Cells ◽  
Blood Test ◽  
White Blood Cells ◽  
Laboratory Data ◽  
Biological Aging ◽  
Differential Prediction ◽  
Test Items ◽  
Peripheral Leukocytes

Biological aging underlies lifestyle-related diseases. It can be assessed by measuring personal somatic cell telomere length. However, measuring the telomere length is laborious, and its clinical surrogate parameters have not been developed. This study analyzed the correlation between telomere length in peripheral leukocytes and laboratory data to select test items relating closely to biological aging. We established formulas from these clinical data to predict the personal telomere length. The subjects were patients having visited Kyushu University Beppu Hospital from 2012 to 2015. Two hundred and thirty-two patients were enrolled. The blood data were collected and telomere lengths were measured by Southern blotting method. The patients showed significant correlations between the telomere length and several blood test data with a sex-related difference. Candidate formulas are as follows: Predicted telomere length (kb) in men = 8.59 − 0.037 × Age (years) + 0.024 × Hemoglobin (g/dL); Predicted telomere length (kb) in women = 4.83 − 0.019 × Age (years) + 0.23 × Albumin (g/dL) + 0.0001 × White blood cells (/mm3) + 0.0020 × Red blood cells (× 104/mm3) + 0.0032 × Total cholesterol (mg/dL). Thus, the derived formulas allow for the accurate differential prediction of telomeric length in male and female patients.

scholarly journals Hippuric acid in urine: reference values

2002 ◽  
Vol 36 (6) ◽  
pp. 723-727 ◽  
Author(s):  
Maria Elisa PB Siqueira ◽  
Maria José N Paiva
Keyword(s):  
Standard Deviation ◽  
Confidence Interval ◽  
Reference Values ◽  
Hippuric Acid ◽  
Smoking Habit ◽  
Age Groups ◽  
Reference Value ◽  
Good Health ◽  
Southeastern Brazil ◽  
The Impact

OBJECTIVE: To establish reference values for hippuric acid (HA) excreted in the urine, and to evaluate the impact of age, gender, alcohol, and tobacco, on these levels in a population nonexposed to toluene. METHODS: Reference values for hippuric acid in urine were determined in 115 toluene nonexposed healthy volunteers, from Alfenas city, Southeastern Brazil. A questionnaire was applied to each volunteer and data on occupational and personal habits were collected. Biochemical and hematological analyses were used to confirm the volunteers' good health condition. Reference values were expressed in g HA/g urine creatinine, as mean ± standard deviation (x ± SD), median, 95% confidence interval (95%CI), 95th percentile, and upper reference value (URV, mean +2 SD). RESULTS: Reference values of hippuric acid in urine were: mean ± standard deviation =0.18±0.10; median =0.15; 95% confidence interval =0.16±0.20; 95th percentile = 0.36 and upper reference value (URV, mean +2 SD) =0.38. Statistically significant differences in urinary HA (Wilcoxon - Mann/Whitney, p<0.05) were observed for different genders and age groups. Alcohol ingestion and smoking habit did not significantly affect the results. CONCLUSIONS: The reference values of hippuric acid in urine can be used in biomonitoring programs of workers occupationally exposed to toluene, especially in the southern region of the state of Minas Gerais. Age and gender may affect the HA reference values.

scholarly journals Cerebrospinal Fluid Total Protein Reference Intervals Derived from 20 Years of Patient Data

2017 ◽  
Vol 63 (12) ◽  
pp. 1856-1865 ◽  
Author(s):  
Christopher R McCudden ◽  
John Brooks ◽  
Priya Figurado ◽  
Pierre R Bourque
Keyword(s):  
Cerebrospinal Fluid ◽  
Quantile Regression ◽  
Total Protein ◽  
Blood Cells ◽  
White Blood Cells ◽  
Age Groups ◽  
Reference Intervals ◽  
Patient Data ◽  
Age Dependence ◽  
Data Set

Abstract BACKGROUND Reference intervals are vital for interpretation of laboratory results. Many existing reference intervals for cerebrospinal fluid total protein (CSF-TP) are derived from old literature because of the invasive nature of sampling. The objective of this study was to determine reference intervals for CSF-TP using available patient data. METHODS Twenty years of hospital database information was mined for previously reported CSF-TP results. Associated demographic, laboratory, and clinical diagnosis (International Classification of Diseases 9/10 codes) details were extracted. CSF-TP results included 3 different analytical platforms: the Siemens Vista 1500, Beckman Lx20, and Roche Hitachi 917. From an initial data set of 19591 samples, the following exclusion criteria were applied: incomplete data, white blood cells (WBCs) &gt;5 × 106/L, red blood cells (RBCs) &gt;50 × 106/L, and glucose &lt;2.5 mmol/L. Patient charts were reviewed in detail to exclude 60 different conditions for which increases in CSF-TP would be expected. A total of 6068 samples were included; 63% of the samples were from females. Continuous reference intervals were determined using quantile regression. Age- and sex-partitioned intervals were established using the quantile regression equation and splitting age-groups into 5-year bins. RESULTS CSF-TP showed a marked age dependence, and males had significantly higher CSF-TP than females across all ages. CSF-TP results from the 3 different instruments and manufacturers showed small (approximately 0.04 g/L), but statistically significant, differences. CSF-TP showed weak, but again statistically significant, correlation with WBC and RBC but was independent of serum total protein and creatinine. CONCLUSIONS The age dependence of CSF-TP supports that age-partitioned reference intervals will be more accurate than a single cutoff, particularly in patients with advancing age.

scholarly journals Need for Local Laboratory Reference Values in Recruitment into Studies of Emerging Infectious Diseases: Insight from Participant Screening for an Ebola Vaccine Trial in a Rural African Setting

Proceedings ◽  
2020 ◽  
Vol 45 (1) ◽  
pp. 8
Author(s):  
David Ishola ◽  
Bailah Leigh ◽  
Emma Hancox ◽  
Hannah Hafezi ◽  
Dickens Kowuor ◽  
...  
Keyword(s):  
Clinical Trials ◽  
Reference Values ◽  
Blood Cells ◽  
Clinical Care ◽  
White Blood Cells ◽  
Vaccine Trial ◽  
Sub Saharan Africa ◽  
Laboratory Screening ◽  
Laboratory Reference ◽  
Local Laboratory

Introduction: The EBOVAC-Salone trial of a candidate Ebola two-dose vaccine regimen (Ad.ZEBOV/MVA-BN-Filo) was conducted in a research-naïve setting in rural northern Sierra Leone, where no local laboratory reference values (LRV) had been established. In the first stage (n = 43) of the trial, laboratory screening was based on internationally-derived protocol LRV (PLRV). For postrecruitment participant care, LRV derived from a West African population (WALRV) were used. We assessed what difference using WALRV rather than PLRV for screening might have made to the eligibility of volunteers. METHODS: We reviewed the laboratory screening results of study volunteers. Red blood cells (RBC), white blood cells (WBC), platelets (PTT), haemoglobin, haematocrit, creatinine, and alanine (ALT) and aspartate (AST) transaminases were measured. Overall and for each parameter, we compared the actually eligible proportion of volunteers using PLRV with the potentially eligible proportion using WALRV. Results: Of 102 (82 males, 20 females) volunteers, overall 55 (53.9% males) met PLRV eligibility criteria for inclusion, compared with 91 (89.2% males) who were within WALRV normal limits (p < 0.0001). Thus, 36 volunteers who failed laboratory screening using PLRV (76.6% of screening failures) might have been eligible if WALRV had been applied. Parameters with significant effect were haemoglobin (33 ineligible by PLRV, vs. 2 ineligible by WALRV; p < 0.0001); RBC (27 vs. 1; p < 0.0001); and PTT (18 vs. 6; p = 0.0093). Levels of creatinine and ALT did not present any differences. Discussion: Use of WALRV in eligibility assessment would potentially have led to considerable differences in the baseline laboratory characteristics of enrolled volunteers. Clinical trials are increasingly common and crucial in emerging infectious disease research. Our findings underscore the importance of locally-derived LRV in clinical trials in sub-Saharan Africa, to avoid excluding potentially eligible study volunteers, and to better support routine clinical care and safety assessments. Appropriately designed studies are needed in each region to establish local LRV.

scholarly journals HISTOLOGY OF BONE LESION AND CORRELATION OF CLINICAL, CLINICAL-LABORATORY DATA AND MORPHOLOGIC INDICES IN DESTRUCTIVE FORM OF OSTEOMYELITIS WITH LATENT COURSE (BRODIE’S ABSCESS)

2018 ◽  
Vol 25 (2) ◽  
pp. 47-55
Author(s):  
V. V. Grigorovskiy ◽  
N. P. Gritsai ◽  
A. S. Gordiy ◽  
O. B. Lyutko ◽  
A. V. Grigorovskaya
Keyword(s):  
Blood Cells ◽  
Clinical Laboratory ◽  
White Blood Cells ◽  
Bone Lesion ◽  
Laboratory Data ◽  
Internal Capsule ◽  
Laboratory Methods ◽  
Brodie’S Abscess ◽  
Low Degree ◽  
Morphological Diagnosis

Urgency. Although the basic pathomorphologic features of bone lesion in destructive form of osteomyelitis with latent clinical course (Brodie’s abscess) are known from the literature, the thorough analytical clinical-morphologic studies have not been yet conducted.Purpose of study: Based on the results of the study to establish correlation dependence between clinical, clinical-laboratory indices and morphologic foci parameters.Material and methods. Fragments of pathologic foci tissues from 25 patients with Brodie’s abscess (31 samples) were the study material. The results of clinical, visualizing and clinical-laboratory methods as well as morphometric semi-quantitative indices characterizing the state of foci tissues were used for the gradationfrequency and correlation analysis.Results. In Brodie’s abscess the bone tissue morphologic changes are presented by spongiosa necrosis and resorption. More often the cases with granulation tissue within the internal capsule of a membrane prevailed. The evidence of exudative inflammation corresponded to the low degree of activity, of a productive one — to high activity. In the majority of cases small sequesters within the capsule tissues were detected. Reliable (p0.05) correlations that corresponded to absolute values of correlation coefficient ra in the range of 0.3 — 0.7 were determined for the following indices: “patient’s age” — “exudative inflammation within the capsule”, “white blood cells” — “pattern of capsule connective tissue”, “white blood cells” — “productive inflammation within the capsule”, “white blood cells” — “presence of sequesters”, “Antistaphylococcal antibodies” — “exudative inflammation within the capsule”.Conclusion. Determined clinical-morphologic correlations could be used to improve both clinical and morphological diagnosis of bone inflammatory lesions.

scholarly journals Pengaruh Konsentrasi IgY Induk yang Berbeda Terhadap Gambaran Darah Anak Ayam Sentul

2019 ◽  
Vol 6 (2) ◽  
pp. 273
Author(s):  
Melly Pratiwi Setyawati ◽  
Niken Ulupi ◽  
Sri Murtini ◽  
Cece Sumantri
Keyword(s):  
Red Blood Cells ◽  
Blood Cells ◽  
White Blood Cells ◽  
T Test ◽  
Blood Picture ◽  
Test Program ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
The Difference

ABSTRAKPenelitian ini bertujuan untuk menganalisis gambaran sel darah putih dan sel darah merah sebagai indikator ketahanan tubuh pada anak ayam sentul. Penelitian ini menggunakan 20 ekor ayam betina dan 20 ekor ayam jantan yang dikawinkan, masing masing terdiri dari 10 ekor ayam dengan konsentrasi IgY tinggi dan 10 ekor ayam dengan konsentrasi IgY rendah. Berdasarkan hasil perkawinan tersebut diperolah 34 ekor anak ayam yang terdiri dari 17 ekor anak ayam yang berasaldari induk dengan konsentrasi IgY rendah. Parameter yang diamati meliputi gambaran sel darah merah (eritrosit, hematocrit dan indeks eritrosit) dan gambaran sel darah putih (leukosit dan diferensiasinya). Penelitian ini menggunakan rancangan acak lengkap (RAL) dengan 2 perlakuan, semua perlakuan diulang 10 kali. Data yang diperoleh dianalisis menggunakan t-test program SAS.  Hasil penelitian ini menunjukan bahwa perbedaan konsentrasi IgY pada induk tidak mempengaruhi sel darah merah dan sel darah putih. Namun terdapat kecendrungan nilai limfosit yang rendah dan H/L yang tinggi pada anak ayam yang berasal dari induk dengan konsentrasi IgY rendah. Hasil ini mengindikasi bahwa anak ayam yang berasal dari induk dengan konsentrasi IgY rendah lebih rentan terhadap cekaman panas. Kata Kunci: ayam sentul, IgY,  gambaran darah, ketahanan tubuhABSTRACTThis study was to aim the description of white blood cells and red blood cells as indicators of immunity in Sentul chicks. This study used 20 hen chickens and 20 cock-chicken mated, consisting of 10 chickens with high IgY concentration and 10 chickens with low IgY concentrations. Based on the results of mating, 34 chicks were obtained consisting of 17 chicks that were from the hen with low IgY concentration. The parameters observed included the description of red blood cells (erythrocytes, hematocrit and erythrocyte index) and the description of white blood cells (leukocytes and their differentiation). The experiment was conducted as a completely randomized design with 2 treatments, all treatments were repeated 10 times. The data obtained were analyzed using the SAS program t-test. The results of this study indicate that the difference in IgY concentration in the hen did not effect on red blood cells and white blood cells. However, there is a tendency for low lymphocyte values and high H/ L in chicks originating from hens with low IgY concentrations. These results indicate that chicks from hens with low IgY concentrations are more susceptible to heat stress.Keyword: blood picture, IgY, immunity, sentul chicken

scholarly journals Evaluation of Baseline Hematologic Parameters of Steady State Sickle Cell Disease Patients at The Chantal Biya’s Foundation, Yaounde- Cameroon

2019 ◽  
Vol 7 (07) ◽  
Author(s):  
Bih Adelaide ◽  
Ngala Solange Mudih ◽  
Alima Yanda ◽  
Akaba Fergus Ambe ◽  
Jutcha Florent ◽  
...  
Keyword(s):  
Steady State ◽  
Sickle Cell Disease ◽  
Sickle Cell ◽  
Reference Values ◽  
Blood Cells ◽  
Healthy Subjects ◽  
White Blood Cells ◽  
Great Decrease ◽  
Cell Disease ◽  
Mean Values

Introduction Sickle cell disease is a genetic abnormality involving the hemoglobin. Although it is primarily a red blood cell disorder, the white blood cells and platelets are also affected by the mutation. The consequence hemoglobin S causing polymerization of hemoglobin, results in hemolysis and anemia. This study aims to provide baseline hematologic parameters in steady state sickle cell disease patients compared with the reference values of normal healthy subjects used at the Chantal Biya Foundation (CBF), in order to monitor other sicklers in Cameroon. Methodology A comparative analysis of sickle cell hematologic parameters with control hematologic parameters of normal healthy subjects (reference values of healthy subjects used at the Chantal Biya Foundation) was carried out. Results A total of 62 sickle cell disease patients in steady state who complied with the selection criteria were recruited. Of the 62, 29 were females and 33 were males. The age range was from 1 year to 19 years and an average age of 6 ± 4.19 SD. Results from sickle cell patients showed an increase in white blood cells (WBCs), neutrophils and lymphocytes and a great decrease in the mean values of hematocrit Hct. as well as RBC indices, but no great or slight difference in the values of basophils compared with the reference values of normal healthy subjects in the CBF Yaoundé, 2015. Conclusion Sickle cell disease patients in steady state have lower values of red cells parameters, but higher values of white cells and platelets count when compared with the reference values of normal healthy subjects used at the Chantal Biya Foundation.

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