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Introduction: Immunological processes play an important role in recurrent spontaneous abortion(RSA). According to studies, T lymphocytes and natural killer cells(NK cells) are two effective cell groups in RSA. The aim of this study was to study the percentage and absolute number of natural killer(NK) cells in women with RSA of unknown etiology. Methods: A total of 24 women with history of recu...
ززمینه و هدف: سلولهای کشنده طبیعی (NK Cell) بخشی از ایمنی ذاتی بدن هستند که تعداد آن‌ها در مقابله با بسیاری از بیماری‌ها و در فرآیند تشخیص و تغییرات آن‌ها اهمیت زیادی دارد. ارتباط بین فاکتور‌های روانی، اجتماعی با وضعیت ایمنی فرد از مطالعاتی است که در حیطه سایکونوروایمونولوژی انجام می‌شود. مطالعه حاضر به بررسی تعداد سلولهای NK موجود در خون محیطی جانبازان شیمیایی تنفسی، و ارتباط آن با سلامت ر...
Introduction: Immunological processes are most important in recurrent spontaneous abortion(RSA). According to studies T lymphocytes and natural killer cells(NK cells) are two effective cell groups in RSA. The aim of this study was to investigate the percentage and absolute number of natural killer(NK) cells in women with RSA with unknown etiology. Methods: 24 Women with a history of recurrent ...
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Introduction: Recurrent spontaneous abortion (RSA) is defined as three or more consecutive miscarriages, which affects 0.8 to 1% of pregnant women. Despite several well-established etiologic factors, the cause of RSA cannot be determined in almost 60% of the cases. It has been postulated that a part of these repeated pregnancy losses might be due to immune causes. Material and Methods: In the ...
In our studies of high altitude physiology we have found an oxygen-carbon dioxide diagram a very great aid to accurate thinking. It has been useful in so many different problems that we consider it worth while to describe it in this paper so that it can be made available to others. 1. Breathing pure oxygen. In this diagram the alveolar tensions of carbon dioxide are plotted as ordinates against...
background: multiple sclerosis (ms) and neuromyelitis optica (nmo) are inflammatory and demyelinating diseases of the central nervous system (cns). nk cells are supposed to play an important role in the pathophysiology of ms, but their role in the nmo remains unknown. the aim of this study was to compare the prevalence of different subpopulations of nk cells in the patients with ms and nmo and ...
Injury data were obtained from the U.S. Army Safety Center for the occupants of U.S. Army aircraft who were both wearing aviator helmets and involved in duty-related aircraft accidents, for the period beginning on 1 January 1972 and ending 1 January 1983. The injury data were correlated with the physical condition of the involved helmets, examined by the authors under an Aviation Life Support E...
Aircrew fatigue is a major contributor to operational errors in civil and military aviation. Objective detection of pilot fatigue is thus critical to prevent aviation catastrophes. Previous work has linked fatigue to changes in oculomotor dynamics, but few studies have studied this relationship in critical safety environments. Here we measured the eye movements of US Marine Corps combat helicop...
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