Platelets stimulated with thrombin release an inhibitor of plasminogen activator (PAl). which has been shown previously to be neutralized by activated protein C (APC). The requirements for optimal neutralization of PAl activity were investigated. The releasate of gel-filtered human platelets stimulated with thrombin served as a source of PAl. When 6 x i08 platelets/mi were incubated with thromb...

In eighty-three patients with confirmed deep vein thrombosis, the fibrinolytic system was studied before and after a 1 0-minute venous occlusion. Blood was collected at least 3 months after the last acute episode. and PAl-i antigen and activity. as well as tissue-type plasminogen activator (t-PA) antigen. urokinase-type plasminogen activator (uPA) antigen. and fibrinolytic activity were measure...

The influence of maturing and ripening on phenylalanine ammonia-lyase (PAL) activity and anthocyanin accumulation was examined using bagged, non-bagged and shaded ‘Jonathan’ (Malus domestica) apples. Bagged fruit were covered with paper bags from mid-June at an early stage of fruit growth. Shaded apples were insulated from sunlight by newspaper at the beginning of colouring (middle September). ...

Pharmacological evidence implicates trans-cinnamic acid as a feedback modulator of the expression and enzymatic activity of the first enzyme in the phenylpropanoid pathway, L-phenylalanine ammonia-lyase (PAL). To test this hypothesis independently of methods that utilize potentially non-specific inhibitors, we generated transgenic tobacco lines with altered activity levels of the second enzyme ...

Lignin is one of the major characteristics of plant secondary cell wall that provides structural rigidity for the cells and tissues and hydrophobicity to tracheary elements. Internode tissues of Aeluropus littoralis as a halophyte grass were sampled at different developmental stages (from the first to the fifth internodes ) and under different NaCl concentrations. The influences of NaCl and int...

Phenylalanine ammonia lyase (PAL) and p-coumarate 3-hydroxylase (C3H) are key enzymes in the phenylpropanoid pathway. The relative expression of PAL and C3H was evaluated in mango fruit cultivar 'Ataulfo' in four ripening stages (RS1, RS2, RS3, and RS4) by quantitative polymerase chain reaction. In addition, enzyme activity of PAL and C3H was determined in mango fruits during ripening. The PAL ...

Adequate energy intake in adolescent athletes is considered important. Total energy expenditure (TEE) can be calculated from resting energy expenditure (REE) and physical activity level (PAL). However, validated PAL recommendations are available for adult athletes only. Purpose was to comprise physical activity data in adolescent athletes and to establish PAL recommendations for this population...

Peer assisted learning (PAL) is a common feature of medical education. Understanding of PAL has been based on processes and outcomes in controlled settings, such as clinical skills labs. PAL in the clinical setting, a complex learning environment, requires fresh evaluation. Socio-cultural theory is proposed as a means to understand educational interventions in ways that are practical and meanin...

Background and Objective: Type 2 Diabetes Mellitus (T2DM) is among the epidemic metabolic chronic diseases that attenuates physiological functions, including hematopoiesis and immune responses, developing a higher risk of COVID-19 incidence. This study purposed to study the association of physical activity level (PAL) with the COVID-19 incidence in patients with T2DM. Materials and Methods: Al...