Determination of neutralization point for allergic hypersensitivity

1987 ◽  
Vol 76 (04) ◽  
pp. 230-234 ◽  
Author(s):  
Anthony D. Fox
Keyword(s):  
Reliable Method ◽  
Needle Puncture

AbstractThe electronic Vegatest method of determining environmental hypersensitivities (allergies) is fast, accurate, and does not require the use of any needle puncture of the skin of the patient. It provides a relatively reliable method of determining the neutralization point and is well suited to the use of homœopathic medicines.

The Need for Using An Enzymatic Colorimetric Assay in Creatinine Determination of Peritoneal Dialysis Solutions

1990 ◽  
Vol 10 (1) ◽  
pp. 89-92 ◽  
Author(s):  
Liliane Larpent ◽  
Christian Verger
Keyword(s):  
Peritoneal Dialysis ◽  
Reliable Method ◽  
Colorimetric Assay ◽  
Colorimetric Method ◽  
Peritoneal Membrane ◽  
Creatinine Kinetics ◽  
Dialysis Solutions ◽  
Peritoneal Dialysis Solutions ◽  
Enzymatic Test

The fate of the peritoneal membrane on continuous ambulatory peritoneal dialysis (CAPD) is usually evaluated through the modification of its permeability to various solutes as glucose, creatinine, and urea. Therefore, the accuracy of the methods used for measurements of creatinine is of great importance. A particular problem does exist for creatinine determination as it may be influenced by the presence of glucose. We studied a new enzymatic colorimetric method for creatinine determination in peritoneal dialysis solutions which contain high dextrose concentrations. Creatinine was measured in plasma, urine, and dialysate from 18 patients on CAPD and in pure dextrose solutions, with an enzymatic test (Boehringer Mannheim) and with Jaffe's reaction on two different analyzers: Astra (Beckman) and Eris (Merck). Creatinine results were similar with both assays (Jaffe's reaction and enzymatic test) when measured in blood and urine. However the Jaffe's reaction gave higher creatinine results than the enzymatic test (p < 0.001), when assays were performed in peritoneal dialysis solutions and in pure glucose solutions. In addition, it appeared that other components of dialysis solutions, mainly calcium chloride, influenced unpredictably the results of creatinine with the Jaffe's reaction. We conclude that specific enzymatic test is a more accurate and reliable method to evaluate creatinine kinetics through the peritoneal membrane when determined in CAPD solutions.

Urinary gonadotropin measurements by enhanced luminometric assays (LIA) for the evaluation of pubertal development

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
And Demir ◽  
Adem Aydın ◽  
Atilla Büyükgebiz ◽  
Ulf-Håkan Stenman ◽  
Matti Hero
Keyword(s):  
Healthy Subjects ◽  
Reliable Method ◽  
Pubertal Development ◽  
High Sensitivity ◽  
Tanner Stage ◽  
Time Resolved ◽  
Stage 1 ◽  
Sensitive Detection Technique ◽  
Serum And Urine

Abstract Objectives Determination of LH in urine has proved to be a reliable method for evaluation of pubertal development. The human LH assay based on time-resolved immunofluorometric (IFMA) technology (AutoDELFIA, PerkinElmer, Wallac) has been found to be suitable for this purpose thanks to its high sensitivity but other assays have not been evaluated. We have analyzed our data obtained by another potentially sensitive detection technique, enhanced luminometric assay (LIA) with the objective of finding a viable alternative to IFMA since these may not be available in the future. Methods LIA was used to measure LH and FSH in serum and urine samples from 100 healthy subjects of each Tanner stage and both genders, whose pubertal development has been determined. Results Urinary gonodotropin concentrations measured by LIA correlated well with Tanner stage [(r=0.93 for girls, r=0.81 for boys; p<0.01 for LH) and (r=0.81 for girls, r=0.73 for boys; p<0.01 for FSH)]. LIA determinations revealed the increase in U-LH concentrations during the transition from Tanner stage 1–2 in both girls and boys (p<0.001), whereas U-FSH and S-LH were able to detect the increase from Tanner stage 1–2 only in boys or girls, respectively (both p<0.001). Conclusions Measurement of urinary gonadotropin concentrations by LIA may be useful for the evaluation of overall pubertal development and also in the detection of transition from prepuberty to puberty.

Radiographic measurement of anterior talar translation in the ankle: determination of the most reliable method

2005 ◽  
Vol 20 (3) ◽  
pp. 301-306 ◽  
Author(s):  
Bruce D. Beynnon ◽  
Gavin Webb ◽  
Bryan M. Huber ◽  
Charles N. Pappas ◽  
Per Renström ◽  
...  
Keyword(s):  
Reliable Method ◽  
Radiographic Measurement

Determination of Bacillus Calmette-Guerin Concentration Integrated in Delivery Materials for Intravesical Infusion Therapy of Superficial Bladder Cancer

2013 ◽  
Vol 655-657 ◽  
pp. 1917-1922 ◽  
Author(s):  
Cheng Ge Wu ◽  
Kang Ning Sun ◽  
Ai Min Li ◽  
Xiao Ning Sun
Keyword(s):  
Bladder Cancer ◽  
Reliable Method ◽  
Superficial Bladder Cancer ◽  
The Other ◽  
Infusion Therapy ◽  
Bacillus Calmette Guerin ◽  
Experiment Study ◽  
Characteristic Peak ◽  
Integrated Delivery

Purpose: To assess determination of Bacillus Calmette-Guerin(BCG) concentration integrated in delivery materials for intravesical infusion therapy of superficial bladder cancer. Material and Methods: The standard BCG solution was prepared and divided into two groups. One group was measured by spectrophotometer direct, the other group was determined by using enzyme mark instrument after the solution had cultured. The preliminary experiment study on BCG integrated delivery materials was finished by XTT method. Results: The wavelength of the characteristic peak changes with the variety of the concentration measured by spectrophotometer direct. The concentration of BCG which was embeded in integrated delivery materials for intravesical infusion therapy of superficial bladder cancer was linear with absorbance at 450nm by XTT method in the selected range. Conclusions: It is an incorrect way to measure BCG concentration like determining other solutions by the spectrophotometer immediately and direct. It is the simple, rapid and reliable method by XTT method to study on the performance of the BCG concentration integrated in delivery materials for Intravesical infusion therapy of superficial bladder cancer.

Reliable Method for the Determination of Food Additive by Capillary Electrophoresis Using a Microvolume of Foodstuffs

2011 ◽  
Vol 361-363 ◽  
pp. 1486-1489
Author(s):  
Qian Xiang ◽  
Ying Gao
Keyword(s):  
Capillary Electrophoresis ◽  
Reliable Method ◽  
Lower Cost ◽  
Limit Of Detection ◽  
Food Additive ◽  
Fast Method ◽  
Optimum Conditions ◽  
Applied Potential ◽  
Minimal Sample

A fast method for the separation and determination of the food additive propyl gallate has been established by using capillary electrophoresis. The effects of several factors such as the applied potential and detection running buffer were investigated in order to obtain the optimum conditions, and the assay results were satisfactory. The limit of detection for the analyte was 10-6 mol/L. This approach has remarkable advantages with respect to other methodologies involving separations and electrochemical detection including minimal sample consumption, higher analysis speed and lower cost. In order to demonstrate the capabilitiy of the method, the determination of additive in a commercial food sample is also presented.

scholarly journals Isolation of Mucorales from biological environment and identification of Rhizopus among the isolates using PCRRFLP

2019 ◽  
Vol 21 (2) ◽  
pp. 98-103
Author(s):  
Mahboobeh Madani ◽  
Mohammadali Zia
Keyword(s):  
Reliable Method ◽  
Enzymatic Digestion ◽  
Accurate Diagnosis ◽  
Molecular Methods ◽  
Clinical Samples ◽  
Molecular Approaches ◽  
Pcr Products ◽  
Microscopic Studies ◽  
Biological Environment

Background and aims: Mucorales are fungi belonging to the category of Zygomycetes, found much in nature. Culture-based methods for clinical samples are often negative, difficult and time-consuming and mainly identify isolates to the genus level, and sometimes only as Mucorales. Therefore, applying fast and accurate diagnosis methods such as molecular approaches seems necessary. This study aims at isolating Mucorales for determination of Rhizopus genus between the isolates using molecular methods. Methods: In this descriptive observational study, a total of 500 samples were collected from air and different surfaces and inoculated on Sabouraud Dextrose Agar supplemented with chloramphenicol. Then, the fungi belonging to Mucorales were identified and their pure culture was provided. DNA extraction was done using extraction kit and the chloroform method. After amplification, the samples belonging to Mucorales were identified by observing 830 bp bands. For enzymatic digestion, enzyme BmgB1 was applied for identification of Rhizopus species by formation of 593 and 235 bp segments. Results: One hundred pure colonies belonging to Mucorales were identified using molecular methods and after enzymatic digestion, 21 isolates were determined as Rhizopus species. The sequencing of PCR products and macroscopic and microscopic studies confirmed the existence of R. stolonifera, R. oryzae and R. caespitosus in the samples. Conclusion: Generally, developing a reliable method for determining Zygomycete species can be a useful tool for better understanding of the epidemiology of mucoromycosis.

A reliable method for spectrophotometric determination of glycine betaine in cell suspension and other systems

2016 ◽  
Vol 498 ◽  
pp. 47-52 ◽  
Author(s):  
Ma Guadalupe Valadez-Bustos ◽  
Gerardo Armando Aguado-Santacruz ◽  
Axel Tiessen-Favier ◽  
Alejandrina Robledo-Paz ◽  
Abel Muñoz-Orozco ◽  
...  
Keyword(s):  
Cell Suspension ◽  
Spectrophotometric Determination ◽  
Glycine Betaine ◽  
Reliable Method

A simple and reliable method for the determination of cellular RNA content

1991 ◽  
Vol 5 (1) ◽  
pp. 39-42 ◽  
Author(s):  
S. Benthin ◽  
J. Nielsen ◽  
J. Villadsen
Keyword(s):  
Reliable Method ◽  
Rna Content
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