scholarly journals Lymphocyte transformation test: The multiple positive results turned to all negative after influenza infection

2021 ◽  
Vol 9 (9) ◽  
Author(s):  
Makoto Kondo ◽  
Shohei Iida ◽  
Ai Umaoka ◽  
Takehisa Nakanishi ◽  
Yoshiaki Matsushima ◽  
...  
Keyword(s):  
Influenza Infection ◽  
Lymphocyte Transformation ◽  
Lymphocyte Transformation Test ◽  
Positive Results

scholarly journals TO010A NEW IMMUN-TOXICOLOGICAL TEST TO DETECT POLYSULFONE HYPERSENSITIVITY IN HEMODIALYSIS PATIENTS

2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Joachim Beige ◽  
Ralph Wendt ◽  
Despina Rüssmann ◽  
Karl-Peter Ringel
Keyword(s):  
False Negative ◽  
False Negative Rate ◽  
Lymphocyte Transformation ◽  
Clinical Problem ◽  
Lymphocyte Transformation Test ◽  
Laboratory Research ◽  
Humoral Immune ◽  
Before And After ◽  
Positive Results

Abstract Background and Aims Incompatibility of dialysis procedure due to hypersensitivity against dialyzer material which currently is mainly based on polysulfone and derivatives can not be assessed by routine laboratory tests. Although the frequency of such symptoms is suspected to be low (below 2%) such resembles an important clinical problem because dialysis procedures are frequently accompanied by symptoms of non-tolerability with reasons not being entirely clear while circulatory reasons are suspected to play a major role. Method To enlighten the role of polysulfone hypersensitivity, we adapted known standardized material immune-toxicological tests (lymphocyte transformation test, basophil degranulation test) to the specific conditions of dialysis and polysulfone material sensitivity. We developed a method of polysulfone micronisation and measured humoral immune response of isolated patient´s lymphocytes when incubated with polysulfone dispersion. Results 39 samples from 103 patients with suspected polysulfone hypersensitivity showed positive results for type 1 (n=19), type 4 (n=18) or both type (n=2) reactions. There were no significant differences in the level of stimulation measured for DI, SI and lymphogenesis before and after dialysis (average delta -0.4; -0.28; - 1.74, p = 0.71; 0.34; 0.37) and with different dialyzer materials (Tab. 1). Patients with pos. type 4 results (LTT and lymphogenesis) showed highly correlated results in either LTT or lymphogenesis test (Fig. 1, R=0.87, p<0.0001). 8 out of 8 samples from patients with repeated test on different PS showed positive results on either PS. One patient tested positive on PS showed no hypersensitivity with another non-PS (PMMA) material. Conclusion This is the first methodological report showing plausible in-vitro results of patients samples concerning polysulfone intolerance. On the first superficial view, a “false-negative” rate of 60% looks rather disappointing, because all samples derived from patients with suspicion of PS hypersensitivity. However, due to the clinical variability of intolerance symptoms and the high prevalence of any problems after HD initiation, mainly of circulatory origin after initiating extracorporeal circuit, this rate may obviously express the true frequency of isolated PS material hypersensitivity in suspected patients. Alternative pathophysiological pathways of material sensitivity like complement activation, remain to be elucidated and incorporated into a comprehensive future testing panel. Further clinical and laboratory research is needed to define true polysulfone hypersensitivity and to enlighten the field of hypothetic subclinical material incompatibility in patients with impaired dialysis tolerability.

scholarly journals Herbal Medicine and False-Positive Results on Lymphocyte Transformation Test

2002 ◽  
Vol 122 (6) ◽  
pp. 399-402 ◽  
Author(s):  
Naoki MANTANI ◽  
Shinya SAKAI ◽  
Toshiaki KOGURE ◽  
Hirozo GOTO ◽  
Naotoshi SHIBAHARA ◽  
...  
Keyword(s):  
Herbal Medicine ◽  
False Positive ◽  
Lymphocyte Transformation ◽  
Lymphocyte Transformation Test ◽  
Positive Results

scholarly journals Lymphocyte Transformation Test for Medicinal Herbs Yields False-Positive Results for First-Visit Patients

2003 ◽  
Vol 10 (3) ◽  
pp. 479-480 ◽  
Author(s):  
Naoki Mantani ◽  
Toshiaki Kogure ◽  
Jun'ichi Tamura ◽  
Yutaka Shimada ◽  
Katsutoshi Terasawa
Keyword(s):  
Liver Injury ◽  
False Positive ◽  
Lymphocyte Transformation ◽  
Lymphocyte Transformation Test ◽  
Medicinal Herbs ◽  
Kampo Medicine ◽  
Scutellariae Radix ◽  
Positive Results

ABSTRACT We performed lymphocyte transformation tests (LTTs) for toki (angelicae radix) and ogon (scutellariae radix) on first-visit patients who had never taken Kampo medicines. LTTs for both herbs were positive in 12 of 14 patients, suggesting that LTTs for these herbs are unreliable for the diagnosis of Kampo medicine-induced liver injury.

Diagnostic methods for confirming drug-allergy – the lymphocyte transformation test in dermatology

2008 ◽  
Vol 149 (24) ◽  
pp. 1107-1114
Author(s):  
Sarolta Makó ◽  
Réka Lepesi-Benkő ◽  
Márta Marschalkó ◽  
Gyöngyvér Soós ◽  
Sarolta Kárpáti
Keyword(s):  
Drug Allergy ◽  
Lymphocyte Transformation ◽  
Lymphocyte Transformation Test ◽  
Diagnostic Methods

A gyógyszermellékhatások felismerése és a tüneteket kiváltó gyógyszer oki szerepének bizonyítása komoly felkészültséget igényel. E közlemény célja a gyógyszerallergiás reakciók diagnosztikai lehetőségeinek rövid áttekintése és a lymphocytatranszformációs teszt gyógyszer-hiperszenzitivitási reakciókban való bizonyító szerepének bőrgyógyászati szempontok szerinti értékelése. A lymphocytatranszformációs teszt azon a megfigyelésen alapul, hogy a gyógyszerrel való első találkozáskor kialakult antigénspecifikus T-sejtek osztódni kezdenek az antigénnel való in vitro megismételt találkozás után. A szenzibilizációt az osztódó T-sejtekbe történő 3 H-timidin-beépülés mértéke jelzi. A hatóanyag-specifikus T-sejtek szinte mindig részt vesznek a gyógyszerallergiás reakciókban, ezért a vizsgálat előnye, hogy sok gyógyszernél és különböző immunreakciók eseteiben egyaránt jól alkalmazható. Hátránya a munkaigényesség, valamint az, hogy specificitásának és szenzitivitásának bizonyításához hiányoznak a széles körű, nagy beteganyagon elvégzett tanulmányok. Emiatt a teszt nem egyértelműen elfogadott a gyógyszerallergia igazolására. Hiányosságai ellenére azonban, jobb prediktív értékű egyéb vizsgálatok hiányában, a lymphocytatranszformációs tesztnek fontos szerepe van a gyógyszerallergiák diagnosztizálása terén.

Reexamination of the blood lymphocyte transformation test in the diagnosis of chronic beryllium disease

1991 ◽  
Vol 88 (1) ◽  
pp. 54-60 ◽  
Author(s):  
Margaret M. Mroz ◽  
Kathleen Kreiss ◽  
Dennis C. Lezotte ◽  
Priscilla A. Campbell ◽  
Lee S. Newman
Keyword(s):  
Blood Lymphocyte ◽  
Lymphocyte Transformation ◽  
Lymphocyte Transformation Test ◽  
Chronic Beryllium Disease ◽  
Beryllium Disease
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