scholarly journals RING N METHYLATION; A MAJOR ROUTE OF HISTAMINE METABOLISM

1956 ◽  
Vol 221 (1) ◽  
pp. 307-313
Author(s):  
Richard W. Schayer ◽  
S.A. Karjala ◽  
K. Jane Davis ◽  
Rosa L. Smiley
Keyword(s):  
Histamine Metabolism ◽  
Major Route

Histamine metabolism disorder in pathogenesis of chronic pelvic pain in patients with external genital endometriosis

2017 ◽  
pp. 56-60
Author(s):  
М.Р. Оразов ◽  
В.Е. Радзинский ◽  
М.Б. Хамошина ◽  
Е.Н. Носенко ◽  
Э.С. Токаева ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Pelvic Pain ◽  
Peripheral Blood ◽  
Chronic Pelvic Pain ◽  
Pain Syndrome ◽  
Histamine Level ◽  
Life Assessment ◽  
Assay Method ◽  
Histamine Metabolism

Цель исследования - изучение особенностей обмена гистамина при хронической тазовой боли у пациенток с наружным генитальным эндометриозом. Методика. В сыворотке крови 100 пациенток методом высокоточного (в нг/мл) иммуноферментного твердофазного анализа определяли концентрацию гистамина. Использованы реактивы «Histamine ЕLISA», аппарат BAE-1000 Гистамин (Labor Diagnostika Nord - LDN, Германия). Оценка выраженности болевого синдрома осуществлялась по шкале ВАШ, оценка качества жизни - на основании опросника для оценки качества жизни при эндометриозе (EHR-30), оценка тревожности - опросника Спилбергера-Ханина. Результаты. Показано статистически значимое повышение уровня гистамина у пациенток с высокой интенсивностью болевого синдрома. Женщины с наружным генитальным эндометриозом, сопровождающимся интенсивным болевым синдромом в 100% случаев обнаруживали высокие уровни ситуативной и личностной тревожности, тогда как, лишь у 40% женщин (n = 16) контрольной группы выявлен умеренный уровень тревожности. Депрессивные расстройства выявлены у 58,3% женщин с хронической тазовой болью (n = 35), из них основную часть (n = 20) составили женщины с выраженной степенью болевого синдрома по ВАШ. Заключение. Психоэмоциональное состояние женщин с тазовой болью, ассоциированной с наружным генитальным эндометриозом, характеризуется высокими уровнями депрессивных и тревожных расстройств, значительным снижением уровня качества жизни. Выявлена прямая связь между интенсивностью болевого синдрома и уровнем гистамина в периферической крови пациенток с наружным генитальным эндометриозом. Objective. To study features of histamine metabolism in patients with chronic pelvic pain associated with external genital endometriosis. Methods. For quantitative assessment of histamine level in peripheral blood was taken from 100 patients which than was centrifuged. In blood serum histamine concentration was determined by enzyme-linked immunosorbent assay method with reagents «Histamine ЕLISA» on the machine BAE-1000 Histamine (Labor Diagnostika Nord - LDN, Hermany). A pain syndrome was assessed by Visual Analog Scale (VAS), quality of life assessment - by Endometriosis Health Profile Questionnaire (EHR-30), level of anxiety was determined by Spielberger-Khanin questionnaire. The results. Showed statistically higher histamine level in patients with severe pain according to VAS. After assessment of results obtained from Spielberger-Khanin questionnaire 100% experimental group’s women with external genital endometriosis (n = 60) were noted to be have high level of state and trait anxiety, then 40% women of control group (n = 16) have moderate level of anxiety. The incidence of depression in women with chronic pelvic pain was 58.3% (n = 35) and the main part (n = 20) were women with severe stage of pelvic pain according to VAS. Conclusions. Psycho emotional condition of women with external genital endometriosis associated pelvic pain characterized by higher depression and anxiety levels, with significant decrease quality of life. Direct relationship also was found between pain syndrome intensity and histamine level in peripheral blood in patients with external genital endometriosis.

The effects of contaminated sediments of the Blesbok Spruit near Witbank on water quality and the toxicity thereof to Daphnia pulex

1999 ◽  
Vol 39 (10-11) ◽  
pp. 173-176 ◽  
Author(s):  
Liesl Hill ◽  
Sebastian Jooste
Keyword(s):  
Surface Water ◽  
Mine Drainage ◽  
Interstitial Water ◽  
Stream Water ◽  
Daphnia Pulex ◽  
Contaminated Sediments ◽  
Toxicity Tests ◽  
Major Route ◽  
Acute Toxicity Tests ◽  
Route Of Exposure

With the increasing focus on environmental issues, the objective of this study is to evaluate the potential impact of contaminated sediments of the Blesbok Spruit near Witbank - which receives acid mine drainage (AMD) inter alia - on biota. Direct transfer of chemicals from sediments to organisms is considered to be a major route of exposure for many species, and therefore focusing attention on sediment contamination and highlighting the fact that sediments are an important resource. Acute toxicity tests were performed on Daphnia pulex using both extracted sediment interstitial water and surface water. Chemical analyses were also performed on the sediment, interstitial water and surface water samples. The toxicity results suggest that metal toxicity adds significantly to the toxicity of the stream water which is enhanced by the effect of pH. The pH of the stream and interstitial water was consistently below 4.5.

Histamine Metabolism in Polycythaemia Vera

2009 ◽  
Vol 15 (1) ◽  
pp. 45-57 ◽  
Author(s):  
Jan Westin ◽  
Göran Granerus ◽  
Aleksander Weinfeld ◽  
Hakon Wetterquist
Keyword(s):  
Polycythaemia Vera ◽  
Histamine Metabolism

scholarly journals Optimising the performance of a lab-scale tidal flow reed bed system treating agricultural wastewater

2004 ◽  
Vol 50 (8) ◽  
pp. 65-72 ◽  
Author(s):  
Y.Q. Zhao ◽  
G. Sun ◽  
C. Lafferty ◽  
S.J. Allen
Keyword(s):  
Tidal Flow ◽  
High Strength ◽  
Pollutant Removal ◽  
Inorganic Pollutants ◽  
Operational Conditions ◽  
Agricultural Wastewater ◽  
Major Route ◽  
Reed Bed ◽  
Ammoniacal Nitrogen Removal

A gravel-based tidal flow reed bed system was operated with three different strategies in order to investigate its optimal performance for the treatment of a high strength agricultural wastewater. According to the three strategies, individual reed beds were saturated and unsaturated with the wastewater for different periods while reasonably stable hydraulic and organic loadings were maintained. Experimental results demonstrated that the system produced the highest pollutant removal efficiencies with a relatively short saturated period and long unsaturated period, highlighting the importance of oxygen transfer into reed bed matrices during the treatment. Significant removals of some major organic and inorganic pollutants were achieved under all three operational conditions. Nitrification was not the major route of ammoniacal-nitrogen removal when the system was under high organic loading. Due to the filtration of suspended solids and the accumulation of biomass, gradual clogging of the reed bed matrices took place, which caused concerns over the long-term efficiency of the tidal flow system.

Terminal differentiation is the major route of HSC loss during chronic infection

2016 ◽  
Vol 44 (9) ◽  
pp. S44
Author(s):  
Katherine King ◽  
Katie Matatall ◽  
Siyi Chen ◽  
Mira Jeong ◽  
Deqiang Sun ◽  
...  
Keyword(s):  
Chronic Infection ◽  
Terminal Differentiation ◽  
Major Route

Histamine metabolism is altered in nasal polyposis

2004 ◽  
Vol 53 (0) ◽  
pp. S93-S94
Author(s):  
A. Falus ◽  
A. Hirschberg ◽  
Zs. Darvas ◽  
A. J�k�ti ◽  
H. Schwellberger ◽  
...  
Keyword(s):  
Nasal Polyposis ◽  
Histamine Metabolism

Effects of Guanethidine and Related Compounds on Histamine Excretion

1972 ◽  
Vol 50 (6) ◽  
pp. 539-544 ◽  
Author(s):  
J. LeBlanc ◽  
J. Côté ◽  
F. Doré ◽  
S. Rousseau
Keyword(s):  
Peritoneal Fluid ◽  
Fold Increase ◽  
Female Rats ◽  
Male Rats ◽  
Daily Injection ◽  
Histamine Metabolism ◽  
Methyl Transferase ◽  
Single Intraperitoneal Injection ◽  
Urinary Histamine ◽  
Related Compounds

The basic nature of guanethidine and some of its effects suggested a possible action of this drug on histamine metabolism. A single intraperitoneal injection of guanethidine (10 mg/kg) in male rats was found to double the daily urinary excretion of free histamine; daily injection for three weeks caused a 10-fold increase. In male rats, guanethidine increased the number of mast cells in the peritoneal fluid and, in both peritoneal fluid and mesentery, caused a significant degranulation of these cells; this action was not observed in female rats. This finding may indicate that guanethidine blocks methylation of histamine by inhibiting imidazole methyl transferase since this enzyme is found in male but not in female rats. Bethanidine and reserpine had no effect on histamine excretion. Imidazole was found to be even more potent than guanethidine in causing an increase in urinary histamine. Guanethidine and imidazole neither potentiated nor mimicked the action of histamine on the isolated ileum.

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