Lammatory response are key determinants of the severity of the exacerbation [17]. The various types of inflammatory infiltrates in the lungs of AECOPD patients also suggest that diversely causative factors can trigger the development of AECOPD. Therefore, our findings may provide a new basis for the clinical management of AECOPD and study of the pathogenic mechanisms of AECOPD.ConclusionIn this study, we employed sputum inflammatory cells and other inflammatory mediators to classify AECOPD patients into four groups. We found that AECOPD patients in individual groups had unique clinical characteristics and inflammatory mediator profile as well as microbial infection. Furthermore, AECOPD patients in the different groups displayed various responses to the standard therapies and different inflammatory status at a stable stage. Therefore, this inflammatory phenotype classification is not only useful for the management of AECOPD patients, but also valuable for investigating the pathogenesis of AECOPD. We recognised that our study had limitations of small sample size at only a few time points and lack of functional examination of inflammatory cells. Thus, further continual studies on the pathogenesis of AECOPD and the function of inflammatory cells of a bigger population are warranted.Author ContributionsConceived and designed the 16985061 experiments: JZ PGG. Performed the experiments: PG JZ XH YH KW PGG. Analyzed the data: PG JZ XH YH KW PGG. Contributed Gracillin web reagents/materials/analysis tools: PG JZ XH YH KW PGG. Wrote the paper: PG JZ XH PGG.Sputum Cellular Phenotypes in AECOPD
Timing, duration, and depth of sleep are controlled by the interaction of the time of day (circadian control) and by the duration of prior wakefulness (homeostatic control) [1,2,3]. Sleep homeostasis is expressed via electroencephalogram (EEG) slow wave activity (SWA) during non-rapid eye movement (NREM) sleep. SWA in NREM sleep is used as a parameter of sleep pressure, need for sleep, or sleepiness [2]. Recently SWA has been well documented to have an important role in synaptic plasticity [4,5,6]. It has also been demonstrated that metabolic function, including adenosine regulation, is critically involved 23148522 in sleep homeostasis [7,8,9]. It has been reported that peroxisome proliferator-activated receptors (PPARs) and AMP-activated protein kinase (AMPK) play key roles in the regulation of sleep homeostasis [10,11]. PPARs are transcription factors belonging to the nuclear receptor family, and are closely IQ1 web related to the regulation of lipid metabolism [12,13,14]. AMPK acts as an efficient sensor of cellular energy states regulating glucose and lipid metabolism [15,16,17]. AMPK activity is altered in response to the intracellular AMP/ATP ratio. The activation of PPARs by treatment with bezafibrate, a PPAR pan-agonist, augments SWA in NREM sleep [10]. In addition to PPARs, AMPK activity also changes SWA without affecting sleep duration [11].In addition, sleep deprivation (SD) activates AMPK [11,18,19], while intracerebroventricular (i.c.v.) administration of 5-aminoimidazole-4-carboxamide riboside (AICAR), an activator of AMPK, augments SWA during NREM sleep, whereas compound C, an inhibitor of AMPK, suppresses SWA [11]. The nutritional state during the gestation and/or lactation period influences fetal growth and development. Low birth weight (LBW) induced by maternal undernutrition is reported to be a crucial risk factor for metabolic disease such as obesity, diabetes, or cardiovascular.Lammatory response are key determinants of the severity of the exacerbation [17]. The various types of inflammatory infiltrates in the lungs of AECOPD patients also suggest that diversely causative factors can trigger the development of AECOPD. Therefore, our findings may provide a new basis for the clinical management of AECOPD and study of the pathogenic mechanisms of AECOPD.ConclusionIn this study, we employed sputum inflammatory cells and other inflammatory mediators to classify AECOPD patients into four groups. We found that AECOPD patients in individual groups had unique clinical characteristics and inflammatory mediator profile as well as microbial infection. Furthermore, AECOPD patients in the different groups displayed various responses to the standard therapies and different inflammatory status at a stable stage. Therefore, this inflammatory phenotype classification is not only useful for the management of AECOPD patients, but also valuable for investigating the pathogenesis of AECOPD. We recognised that our study had limitations of small sample size at only a few time points and lack of functional examination of inflammatory cells. Thus, further continual studies on the pathogenesis of AECOPD and the function of inflammatory cells of a bigger population are warranted.Author ContributionsConceived and designed the 16985061 experiments: JZ PGG. Performed the experiments: PG JZ XH YH KW PGG. Analyzed the data: PG JZ XH YH KW PGG. Contributed reagents/materials/analysis tools: PG JZ XH YH KW PGG. Wrote the paper: PG JZ XH PGG.Sputum Cellular Phenotypes in AECOPD
Timing, duration, and depth of sleep are controlled by the interaction of the time of day (circadian control) and by the duration of prior wakefulness (homeostatic control) [1,2,3]. Sleep homeostasis is expressed via electroencephalogram (EEG) slow wave activity (SWA) during non-rapid eye movement (NREM) sleep. SWA in NREM sleep is used as a parameter of sleep pressure, need for sleep, or sleepiness [2]. Recently SWA has been well documented to have an important role in synaptic plasticity [4,5,6]. It has also been demonstrated that metabolic function, including adenosine regulation, is critically involved 23148522 in sleep homeostasis [7,8,9]. It has been reported that peroxisome proliferator-activated receptors (PPARs) and AMP-activated protein kinase (AMPK) play key roles in the regulation of sleep homeostasis [10,11]. PPARs are transcription factors belonging to the nuclear receptor family, and are closely related to the regulation of lipid metabolism [12,13,14]. AMPK acts as an efficient sensor of cellular energy states regulating glucose and lipid metabolism [15,16,17]. AMPK activity is altered in response to the intracellular AMP/ATP ratio. The activation of PPARs by treatment with bezafibrate, a PPAR pan-agonist, augments SWA in NREM sleep [10]. In addition to PPARs, AMPK activity also changes SWA without affecting sleep duration [11].In addition, sleep deprivation (SD) activates AMPK [11,18,19], while intracerebroventricular (i.c.v.) administration of 5-aminoimidazole-4-carboxamide riboside (AICAR), an activator of AMPK, augments SWA during NREM sleep, whereas compound C, an inhibitor of AMPK, suppresses SWA [11]. The nutritional state during the gestation and/or lactation period influences fetal growth and development. Low birth weight (LBW) induced by maternal undernutrition is reported to be a crucial risk factor for metabolic disease such as obesity, diabetes, or cardiovascular.
