To Estimate Total and Direct Bilirubin in Serum

2018 ◽  
pp. 97-101
Author(s):  
Vijay Kumar ◽  
Kiran Dip Gill
Keyword(s):  
Direct Bilirubin

scholarly journals Measurement and clinical usefulness of bilirubin in liver disease

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Armando Raúl Guerra Ruiz ◽  
Javier Crespo ◽  
Rosa Maria López Martínez ◽  
Paula Iruzubieta ◽  
Gregori Casals Mercadal ◽  
...  
Keyword(s):  
Bile Ducts ◽  
High Performance ◽  
Liver Lesion ◽  
Cell Number ◽  
Direct Bilirubin ◽  
Liver Uptake ◽  
Biochemical Alterations ◽  
Indirect Bilirubin ◽  
Impaired Liver ◽  
Direct Spectrophotometry

Abstract Elevated plasma bilirubin levels are a frequent clinical finding. It can be secondary to alterations in any stage of its metabolism: (a) excess bilirubin production (i.e., pathologic hemolysis); (b) impaired liver uptake, with elevation of indirect bilirubin; (c) impaired conjugation, prompted by a defect in the UDP-glucuronosyltransferase; and (d) bile clearance defect, with elevation of direct bilirubin secondary to defects in clearance proteins, or inability of the bile to reach the small bowel through bile ducts. A liver lesion of any cause reduces hepatocyte cell number and may impair the uptake of indirect bilirubin from plasma and diminish direct bilirubin transport and clearance through the bile ducts. Various analytical methods are currently available for measuring bilirubin and its metabolites in serum, urine and feces. Serum bilirubin is determined by (1) diazo transfer reaction, currently, the gold-standard; (2) high-performance liquid chromatography (HPLC); (3) oxidative, enzymatic, and chemical methods; (4) direct spectrophotometry; and (5) transcutaneous methods. Although bilirubin is a well-established marker of liver function, it does not always identify a lesion in this organ. Therefore, for accurate diagnosis, alterations in bilirubin concentrations should be assessed in relation to patient anamnesis, the degree of the alteration, and the pattern of concurrent biochemical alterations.

A “one-minute” direct bilirubin determination using the Abbott ABA-100 bichromatic analyser

1982 ◽  
Vol 15 (2) ◽  
pp. 113-115 ◽  
Author(s):  
Samuel Y. Chu ◽  
Agnes Kaczmareck ◽  
V.E. Turkington
Keyword(s):  
Direct Bilirubin

Effects of bilirubin configurational photoisomers on the measurement of direct bilirubin by the vanadate oxidation method

2021 ◽  
pp. 000456322199906
Author(s):  
Shohei Kawamoto ◽  
Kosuke Koyano ◽  
Miyo Ozaki ◽  
Takeshi Arai ◽  
Takashi Iwase ◽  
...  
Keyword(s):  
High Performance ◽  
Total Bilirubin ◽  
Critical Factor ◽  
Chemical Oxidation ◽  
Direct Bilirubin ◽  
Serum Samples ◽  
Structural Isomers ◽  
Extreme Caution ◽  
Light Emitting ◽  
Oxidation Method

Background Direct-reacting bilirubin concentrations measured using vanadate chemical oxidation method do not exactly match the conjugated bilirubin concentration. One of the causes is the effect of bilirubin photoisomers. However, the quantitative evaluation of the effects of these photoisomers has not been sufficiently conducted. In particular, the influence of bilirubin configurational isomers on direct bilirubin is the most critical factor. Methods Sixteen residual serum samples were used. For quantitative analysis based on the change in direct bilirubin and bilirubin configurational isomer, samples were irradiated via blue light-emitting diodes to suppress the production of bilirubin structural isomers. Total bilirubin and direct bilirubin concentrations were measured using the vanadate chemical oxidation method. Concentrations of 4Z,15Z-bilirubin IXα and its photoisomers were measured using high-performance liquid chromatography. The sum of 4Z,15E-bilirubin IXα and 4E,15Z-bilirubin IXα was notated as bilirubin configurational isomer, and the differences between the measured values of the irradiated and non-irradiated samples were calculated and notated as ΔDB and ΔBCI. Results In non-irradiated and irradiated samples, total bilirubin and direct bilirubin concentrations were 10.73 mg/dL with significant a decrease to 10.60 mg/dL and 0.69 mg/dL with a significant increase to 0.78 mg/dL, while bilirubin configurational isomer values were 1.00 mg/dL and 1.52 mg/dL, respectively. The linear regression equation revealed a significant positive correlation of Y = 0.187X−0.006 between ΔDB (Y) and ΔBCI (X). Conclusion Applying the vanadate chemical oxidation method affected approximately 19% of the bilirubin configurational isomer concentration for direct bilirubin. Extreme caution is necessary when interpreting the measured values of samples indicative of unconjugated hyperbilirubinaemia.

Reactivity of bilirubin photoisomers on the measurement of direct bilirubin using vanadic acid method

2017 ◽  
Vol 55 (2) ◽  
pp. 296-298
Author(s):  
Hitoshi Okada ◽  
Susumu Itoh ◽  
Shohei Kawamoto ◽  
Miyo Ozaki ◽  
Takashi Kusaka
Keyword(s):  
High Performance ◽  
Light Emitting Diode ◽  
Direct Bilirubin ◽  
Acid Oxidation ◽  
Albumin Solution ◽  
Light Emitting ◽  
Oxidation Method ◽  
Before And After ◽  
Vanadic Acid ◽  
Human Serum Albumin Solution

Objective Investigation of the reactivity of fractions of bilirubin photoisomers with the vanadic acid oxidation method. Methods Bilirubin photoisomers were prepared by irradiating a bilirubin/human serum albumin solution with blue light emitting diode. Direct bilirubin and bilirubin fractions were measured using the vanadic acid oxidation method and high-performance liquid chromatography in the sample before and after irradiation. Results Direct bilirubin was increased in the solution containing bilirubin photoisomers. ( EE)-/( EZ) -cyclobilirubin-IXα and ( ZE)-/( EZ)-bilirubin-IXα completely disappeared after the addition of vanadic acid. Conclusion Bilirubin photoisomers reacted as direct bilirubin in the vanadic acid oxidation method.

scholarly journals A mini review on the Lactic Acidosis in goats and its remedial approaches

2020 ◽  
Vol 5 (2) ◽  
pp. 98-103
Author(s):  
Asad Ali Khaskheli ◽  
Muhammad Ibrahim Khaskheli ◽  
Allah Jurio Khaskheli ◽  
Arshad Ali Khaskheli
Keyword(s):  
Alkaline Phosphatase ◽  
Lactic Acidosis ◽  
Sodium Bicarbonate ◽  
Glucose Level ◽  
Magnesium Hydroxide ◽  
Total Bilirubin ◽  
Direct Bilirubin ◽  
Cassia Fistula ◽  
Indirect Bilirubin ◽  
Rumen Ph

The current study was performed in order to investigate the threat of lactic acidosis in goats worldwide and explore the curative strategies. In this regards a detailed review was performed, however obtained facts were found to be much interesting and valuable. It was indicated by researchers that lactic acidosis is the most common problem in goats throughout the worlds. It represents significant economic loss due to direct and indirect effects. It was further stated that goats with lactic acidosis show decreased body temperature up to 98.1±0.89 °F, rumen and intestinal movement 0.23±0.48/m, rumen pH 4.8±0.07, blood pH 7.1±0.08, increased respiration rate 56.14±7.15/m and heart rate, 136.28±4.71/m. Affected goats also show signs of dyspnea, anorexia, inactivity, incoordination and recumbancy. The glucose level remains 190.14±36.49 mg/dl, total bilirubin 0.75±0.04 mg/dl, direct bilirubin 0.27±0.03mg/dl, indirect bilirubin 0.40±0.03 mg/dl, alanine aminotransferase ALT 36.42±3.04 U/l and alkaline phosphatase 420±3.65 U/l. Furthermore, Glucose level, total bilirubin, direct bilirubin, indirect bilirubin, ALT (SGPT) and alkaline phosphatase increase with treatment of Cassia Fistula, serum biochemical changes rapidly return to normal compared to treatment with Sodium bicarbonate or Magnesium hydroxide. The ruminal juices changes are also significantly improved with the treatment. The changes in the ingesta color, odor and consistency and rumen pH return to normal with the use of Cassia Fistula, Sodium bicarbonate and Magnesium hydroxide. In conclusion, Cassia fistula, Sodium bicarbonate and Magnesium hydroxide could be used as valuable strategies against lactic acidosis in goats. These therapies have been proved to be effective for treating the acidosis in goats. 

scholarly journals DOSE-DIFFERENTIATED CORRELATION INTERACTIONS BETWEEN INDICES OF HEMOGLOBIN EXCHANGE IN TURKEYS UNDER THE INFLUENCE OF THE PROBIOTIC FORMULATION VETOM 1.2

2020 ◽  
pp. 82-91 ◽  
Author(s):  
M. S. Yakovleva ◽  
N. S. Yakovleva ◽  
N. A. Gotovchikov ◽  
S. N. Tishkov ◽  
L. P. Ermakova
Keyword(s):  
Serum Albumin ◽  
Red Blood Cells ◽  
Total Protein ◽  
Blood Cells ◽  
Bacillus Amyloliquefaciens ◽  
Total Bilirubin ◽  
Inverse Correlation ◽  
Direct Bilirubin ◽  
Subsequent Decrease ◽  
Probiotic Preparation

The effect of the probiotic preparation Vetom 1.2 on the basis of Bacillus subtilis VKPM B-10641, Bacillus amyloliquefaciens VKPM B-10642 and Bacillus amyloliquefaciens VKPM B-10643 in different doses on the correlation interactions between the parameters of turkey hemoglobin exchange, blood erythrocytes and blood red blood cells direct and total bilirubin, total protein and serum albumin was studies. Correlations were calculated using Spearman formula, the reliability of correlations was checked by Student. The formulation was used for turkeys once a day for 30 days in doses of 12.5; 25; fifty; 75 and 100 mg / kg body weight. It was found that Vetom 1.2 in minimal doses leads to an inverse correlation between iron and total bilirubin, direct bilirubin, total protein and albumin, an increase in the concentration of the formulation leads to the disappearance of this effect with a gradual subsequent decrease in this indicator. Vetom 1.2 in doses up to 50 mg / kg leads to an inverse correlation between the concentrations of hemoglobin and direct bilirubin, total protein and serum albumin, at a dose of 75 mg / kg there is a direct correlation between these indicators, and at a dose of 100 mg / kg returns a negative correlation. The probiotic preparation Vetom 1.2 leads to a direct dependence of the concentration of bilirubins (total and direct) in serum on the concentrations of hemoglobin and red blood cells when used in most doses, except 75 mg / kg, which reduces the correlation.

Higher direct bilirubin levels during mid-pregnancy are associated with lower risk of gestational diabetes mellitus

Endocrine ◽  
2016 ◽  
Vol 55 (1) ◽  
pp. 165-172 ◽  
Author(s):  
Chaoqun Liu ◽  
Chunrong Zhong ◽  
Xuezhen Zhou ◽  
Renjuan Chen ◽  
Jiangyue Wu ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Gestational Diabetes ◽  
Gestational Diabetes Mellitus ◽  
Lower Risk ◽  
Direct Bilirubin

scholarly journals Fish Oil Monotherapy for Intestinal Failure-Associated Liver Disease on SMOFlipid in the Neonatal Intensive Care Unit

2020 ◽  
Vol 9 (11) ◽  
pp. 3393
Author(s):  
Sanghoon Lee ◽  
Se In Sung ◽  
Hyo Jung Park ◽  
Yun Sil Chang ◽  
Won Soon Park ◽  
...  
Keyword(s):  
Liver Disease ◽  
Birth Weight ◽  
Fish Oil ◽  
Neonatal Intensive Care ◽  
Lipid Emulsion ◽  
Intestinal Failure ◽  
Direct Bilirubin ◽  
Low Birth Weight Infants ◽  
Life Threatening

Intestinal failure-associated liver disease (IFALD) is a life-threatening complication of parenteral nutrition (PN) and is most prevalent in the preterm neonatal population receiving long-term PN. In this study, we report the outcome of our experience with fish oil monotherapy for IFALD in a fish oil-based combination lipid emulsion administered to preterm low birth weight infants. Fasting neonates were administered as PN according to our center’s nutrition protocol. A diagnosis of IFALD was made when the serum direct bilirubin levels were >2.0 mg/dL in two consecutive measurements that were more than one week apart, without evidence of intrinsic causes of liver dysfunction. The management of IFALD was conducted by switching the lipid emulsion from combination lipid emulsion to fish oil monotherapy at 1.0 g/kg/day, infused over 24 h. Fifteen infants met the criteria for IFALD and received fish oil monotherapy. The median gestational age was 27.5 weeks and the median birth weight was 862.5 g. IFALD was successfully reversed in 11 infants (11/15, 73.3%). The median duration of fish oil monotherapy was 39 days. Direct bilirubin values were initially elevated and then steadily declined from the third week of treatment onward. The enteral tolerance increased in varying degrees during the treatment period. The mean weight gain was 26.0 g/day during fish oil monotherapy. Omegaven® (Fresenius Kabi Austria Gmbh, Graz, Austria) at a dose of 1.0 g/kg/day was well tolerated, and no adverse events related to Omegaven use were seen. The reversal of IFALD in preterm infants on combination lipid emulsion containing fish oil was achieved by switching to fish oil monotherapy.

scholarly journals Assessment of obesity and hepatic late adverse effects in the Egyptian survivors of pediatric acute lymphoblastic leukemia: single center study

2017 ◽  
Vol 9 (1) ◽  
pp. e2017026 ◽  
Author(s):  
Farida El-Rashedy ◽  
Mahmoud Ahmed El-Hawy ◽  
Sally El Hefnawy ◽  
Mona Mohammed
Keyword(s):  
Hepatitis C ◽  
Acute Lymphoblastic Leukemia ◽  
Adverse Effects ◽  
Liver Enzymes ◽  
Lymphoblastic Leukemia ◽  
Overweight And Obesity ◽  
Direct Bilirubin ◽  
P Value ◽  
Late Adverse Effects ◽  
Pediatric All

BACKGROUND: Childhood acute lymphoblastic leukemia (ALL) with current cure rates reaching 80% emphasizes the necessity to determine treatment related long-term effects. The aim of this study is to estimate the prevalence of overweight, obesity and hepatic late adverse effects in a cohort of ALL survivors treated at the Hematology and Oncology Unit, Pediatrics Department, Menoufia University, Egypt.METHODS: In this case control study, height, weight and body mass index (BMI) were assessed for 35 pediatric ALL survivors and 15 healthy children. These parameters were plotted on the growth and WHO standard deviation charts for both males and females. Overweight and obesity were defined by BMI > 85th and 95th percentile respectively. Laboratory investigations were done in the form of iron profile, liver enzymes, total and direct bilirubin levels, serum urea &creatinine and detection of hepatitis C virus antibodies by ELISA.RESULTS: The weight and BMI were significantly higher in the survivors than controls (P value =0.002 and 0.039 respectively). ALT, total & direct bilirubin, serum ferritin and transferrin saturation were significantly higher in the survivors than the controls (P value = 0.03, 0.036, 0.044, 0.006 and 0.03 respectively). Ten (28.6%) of survivors had hepatitis C antibodies with none (0%) of controls (P value =0.02)CONCLUSIONS: Pediatric ALL survivors are at increased risk of overweight/obesity, hepatic dysfunction in the form of elevated liver enzymes, bilirubin levels and C viral hepatitis. Screening of those survivors for such complications should be considered.Key words: ALL- Survivors – Obesity- Liver.

In Vitro Effects of Light on Serum Bilirubin Subfractions Measured by High-Performance Liquid Chromatography: Comparison with Four Routine Methods

1992 ◽  
Vol 38 (10) ◽  
pp. 2124-2129 ◽  
Author(s):  
H Ihara ◽  
H Nakamura ◽  
Y Aoki ◽  
T Aoki ◽  
M Yoshida
Keyword(s):  
High Performance ◽  
Total Bilirubin ◽  
Serum Bilirubin ◽  
Accurate Determination ◽  
Hplc Method ◽  
Direct Bilirubin ◽  
Spectrometric Method ◽  
Indirect Bilirubin ◽  
In Vitro Effects

Abstract The effects of light on serum bilirubin subfractions in vitro were investigated by HPLC and four routine methods for bilirubin analysis. By HPLC, the rate of photodegradation of unconjugated bilirubin (Bu) was nearly twice that of monoconjugated bilirubin (mBc) and threefold that of diconjugated bilirubin (dBc); delta bilirubin (Bd) was most stable against photoirradiation. In the diazo method, the rate of photodegradation of direct bilirubin was almost the same as that of the sum of mBc, dBc, and Bd determined by the HPLC method. However, the rate of photodegradation of indirect bilirubin was significantly lower (P < 0.001) than that obtained by HPLC, because approximately 30% of the bilirubin photoproducts reacted with the diazo reagent as indirect bilirubin. The rate of photodegradation of total bilirubin determined by the direct spectrometric method was lower than that determined by the diazo method, but equal to that of the total peak areas of HPLC. In the Ektachem method, bilirubin photoproducts affected total bilirubin negligibly, and Bc and Bu positively, so that the value of Bd decreased. In the bilirubin oxidase method, bilirubin photoproducts were oxidized enzymatically by both the total and direct bilirubin reagents. We re-emphasize the importance of shielding serum from light to avoid generating bilirubin photoproducts that interfere with the accurate determination of serum bilirubin subfractions. We also recommend HPLC analysis as a standard method for bilirubin measurement.

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