Correction of the body state with low-intensity laser irradiation in modeling adrenal toxemia in rats

Author(s):  
А.В. Дерюгина ◽  
Н.В. Жемарина ◽  
М.Н. Иващенко ◽  
А.Г. Самоделкин ◽  
П.С. Игнатьев ◽  
...  

Срыв адаптационных возможностей организма может стать патогенетической основой различных заболеваний. Длительный выброс адреналина в кровь вызывает кататоксические эффекты, что делает актуальным поиск эффективных средств и методов коррекции гиперадреналинемии. Цель работы - изучение влияния низкоинтенсивного лазерного излучения (НИЛИ) на электрофоретическую подвижность эритроцитов, процессы липопероксидации и структуру надпочечников при адреналовой токсемии у крыс. Методика. Адреналовую токсемию моделировали внутрибрюшинным введением адреналина-гидрохлорида (0,1 мг/кг). Животным 1-й группы вводили только адреналин, животных 2-й - через 30 мин после введения адреналина облучали НИЛИ, крысы 3-й группы получали только воздействие НИЛИ, контролем служили интактные животные (4-я группа). Воздействие НИЛИ проводилось на затылочную область в течение 10 мин. В качестве источника излучения применяли аппарат лазерный терапевтический «Успех» (ГП «Восход»), основанный на низкоинтенсивном импульсном излучении (длина волны - 0,89±0,05 мкм, частота импульсов 415 Гц, плотность средней мощности излучения - 193 мкВт/см2, площадь облучаемой поверхности 20 см2). Забор крови производили через 1 ч, 24 ч и 1 нед после начала эксперимента. Определяли уровень малонового диальдегида по реакции с тиабарбитуровой кислотой; электрофоретическую подвижность эритроцитов изучали методом микроэлектрофореза. Структуру надпочечников изучали морфологическими методами. Результаты. Показано, что НИЛИ на фоне адреналина (2-я группа) через 1 нед нивелировало снижение электрофоретической подвижности эритроцитов, восстанавливало уровень малонового диальдегида до значений интактной группы. Морфологическая картина надпочечников в этой группе не отличалась от таковой у интактных животных, тогда как при действии адреналина (1-я группа) не происходило восстановления исследуемых показателей до физиологической нормы. Заключение. Полученные в ходе эксперимента данные свидетельствуют о корригирующем действии низкоинтенсивного лазерного излучения при адреналовой токсемии у животных. Механизм действия низкоинтенсивного лазерного излучения, вероятно, носит системный характер и связан с воздействием на стресс-реализующие системы организма. Maladaptation results in the third stage of stress, exhaustion, and, thus, may underlie many diseases. Prolonged release of epinephrine into blood exerts catatoxic effects; therefore, searching for effective methods for correction of hyperadrenalinemia is relevant. Presently, low-intensity laser therapy (LILT) is commonly used in medicine. However, the introduction of LILT to clinical practice is largely empirical. The aim of this study was to analyze the effect of LILT on electrokinetic potential of red blood cells (RBC), lipid peroxidation (LPO), and the morphology of adrenal glands in adrenal toxemia in rats. Methods. Adrenal toxemia was modeled by intraperitoneal administration of epinephrine hydrochloride (0.1 mg/kg) to rats. Animals of group 1 received epinephrine alone; animals of group 2 received LILT 30 min prior to epinephrine administration; rats of group 3 received LILT alone; and intact rats of group 4 were used as control. Blood was withdrawn at one hour, 24 h, and one week of the experiment onset. The RBC zeta potential, which characterizes the morpho-functional state of membranes, was determined by measuring the effect of low-intensity laser therapy on RBC electrophoretic mobility using microelectrophoresis. LPO as an indicator of cell membrane injury was determined by concentration of malonic dialdehyde (MDA). The structure of adrenal glands was studied histologically. Results. LILT combined with epinephrine (group 2) alleviated the decrease in RBC electrophoretic mobility and restored the MDA level to values of the intact group at one week. Morphological structure of adrenal glands in group 2 did not differ from that in control whereas epinephrine (group 1) did not restore the study parameters to physiologically normal values. Conclusion. The study showed that LILT exerted a correcting effect in experimental adrenal toxemia. The mechanism of this effect is likely systemic and related with the effect on stress systems of the body.

Author(s):  
Rodrigo Antonio Carvalho Andraus ◽  
Luciana Prado Maia ◽  
João Paulo Manfré Dos Santos ◽  
Amanda Rezende Mesquita ◽  
Thaynara Gonzaga Santos ◽  
...  

Introduction: Low intensity laser therapy has been used to accelerate the ulcers healing due to its healing, anti-inflammatory, analgesic and anti-edematous effects. Contaminations by bacteria or fungi on these ulcers commonly happen, constituting a major complication of healing, but there is no consensus about laser therapy bactericidal or fungicidal effect. Objective: To analyze the effects of different times of appliantion using the 808nm and 660nm lasers on cultures of different bacterial species and fungi in vitro. Method: Fifteen Petri plates were prepared, 12 plates containing Gram-positive (3 Staphylococcus aureus plates, 3 Enterococcus plates) and gram negative bacterias (3 Escherichia coli, 3 Klebsiella pneumonia plates) and 3 Petri plates with the fungi Candida albicans. Plates were randomly divided into 3 groups with 5 plates each group. Plates of Group 1 were irradiated with 660 nm laser at nine different points (A, A1, A2/B, B1, B2/C, C1, C2), and points A/B/C reciebed only one application, points A1,B1,C1 received 2 applications and points A2,B2,C2 received 3 applications. Plates from group 2 where irradiated with 660nm also in nine diferente points, following the same criterea of group 1, while plate of group 3 where used as control, without irradiation. Groups 1 and 2 were irradiated with 144 J/cm² dose at point A (irradiation time of 2 minutes and 15 seconds), point B (irradiation time of 1 minute 7 seconds) and at point C (40 seconds). After the irradiations the plates were incubated for 24 hours. The cultures were visually examined to check the presence or not of the inhibition zone. Results: In all the groups, no zone of inhibition nor growth were observed, indicating no bactericidal/fungicidal and/or bactericidal effect, in other words, in all groups and locations with different time exposures (A - 30 mW, B - and C 60 mW - 100 mW) the growth of bacteria and fungi were equal. Conclusion: Low intensity laser therapy (808nm and 660nm) did not produce bactericidal and/or bacteriostatic effects, and even no bio-stimulant effect on the bacteria.


2004 ◽  
Vol 53 (4) ◽  
pp. 76-81
Author(s):  
E. F. Condrina ◽  
G. N. Ponomarenko

This article provides an overview of scientific publications by domestic and foreign authors over the past 10 years, devoted to the problem of using low-intensity laser therapy in the treatment of chronic inflammatory diseases of the uterine appendages; the analysis of indications and contraindications, advantages and disadvantages of using laser radiation with different characteristics in the treatment of chronic salpingo-oophoritis was carried out; the most significant aspects of the influence of laser therapy on the main pathogenetic mechanisms of the development of the inflammatory process of the uterine appendages are highlighted.


2017 ◽  
Vol 174 ◽  
pp. 126-132 ◽  
Author(s):  
Bianca F. Trawitzki ◽  
Lothar Lilge ◽  
Fellipe A.T. de Figueiredo ◽  
Ana Paula Macedo ◽  
João Paulo M. Issa

2004 ◽  
Author(s):  
Sylvia B. Rabelo ◽  
Antonio G. J. B. Villaverde ◽  
Miguel A. C. Salgado ◽  
Milene d. S. Melo ◽  
Renata A. Nicolau ◽  
...  

2011 ◽  
Author(s):  
N. A. Abdel-Raoof ◽  
N. G. Elnhas ◽  
I. M. Elsayed ◽  
Mohamed Abdel Harith

2019 ◽  
Vol 2 (1) ◽  
pp. 29
Author(s):  
FeifyA B. Mahmoud ◽  
WadidaH Abd El-Kader El-Sayed ◽  
AmirA.E Saidi Ahmed ◽  
AmirN W. Mawad ◽  
OsamaF A. Al Balah ◽  
...  

2009 ◽  
Vol 36 (11) ◽  
pp. 2799-2804
Author(s):  
刘承宜 Liu Chengyi ◽  
王艳芳 Wang Yanfang ◽  
朱健 Zhu Jian ◽  
刘颂豪 Liu Songhao

2009 ◽  
Vol 46 (11) ◽  
pp. 73-79
Author(s):  
刘承宜 Liu Chengyi ◽  
蔡庆 Cai Qing ◽  
王艳芳 Wang Yanfang ◽  
朱健 Zhu Jian

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