Results: In 2002, 16 patients from 5 families were

diagno

Results: In 2002, 16 patients from 5 families were

diagnosed clinically with MEN1. Twenty MEN1-associated endocrinopathies had been diagnosed and 21 surgical procedures had been performed. By the end of 2008, 45 patients from 15 families had been identified, with 83 endocrinopathies diagnosed and 50 surgical procedures performed. Ninety-four known relatives are awaiting screening for MEN1.

Conclusion: The successful selleck chemical identification of patients with MEN1 has resulted in an exponential increase in the number of patients attending the clinic. As relatives undergo screening, the diagnosis of MEN is likely to increase. The ever increasing numbers of patients requiring screening, surveillance and treatment has implications in the planning of future service provision.”
“Voxel based morphometry (VBM) is a widely used technique for studying the structure of the brain. Direct comparisons between the results obtained using VBM and the underlying histology are limited, however. To circumvent the problems inherent in comparing VBM data in vivo with tissue samples that must generally be obtained postmortem, we chose to consider GABA(A) receptors, measured using F-18-flumazenil PET (18F-FMZ-PET), as non-invasive neural markers

to be compared with VBM data. Consistent with previous cortical thickness findings, GABAA receptor binding potential (BPND) was found to correlate positively across regions with grey matter (GM) density. These findings confirm that there is a general positive relationship Selleck Forskolin between MRI-based GM density measures and GABA(A) receptor BPND on a region-by-region basis (i.e., regions with more GM tend to also have higher BPND). (c) 2013 IBRO. Published by Elsevier Ltd. All rights reserved.”
“The present study examined whether status epilepticus Everolimus (SE) induced by LiCI-pilocarpine in immature rats (postnatal day [P]12) interferes with normal development; leads to progressive epileptogenesis, or cognitive decline and to pathology similar to that seen in human temporal lobe

epilepsy. We correlated the extent of pathologic changes with the severity of functional alterations or epilepsy. SE-induced changes were compared with those of rats with SE induced at P25. Animals of both ages were exposed to a battery of behavioral tests for up to 3 months after SE. Rats with SE at P12 showed mild retardation of psychomotor development and delayed habituation, whereas rats with SE at P25 showed no habituation. Assessment in adulthood using the Morris water maze test revealed that SE at both P12 and P25 led to cognitive impairment and that the severity of the impairment increased with age. A handling test revealed increased aggression in rats with SE at P25, but not in rats with SE at P12. Epilepsy was diagnosed with continuous video-electroencephalographic (EEG) monitoring for up to 7 d. P25 rats were monitored at 5 months after SE and seizures were detected in 83.3% of animals.

To that end we have successfully expressed the hydrosoluble ecto-

To that end we have successfully expressed the hydrosoluble ecto-domain of bovine CD38 (bCD38; residues 32-278), and corresponding glycosylation mutants, in the methylotrophic

yeast Pichia pastoris. The secreted proteins were purified to homogeneity by affinity chromatography on immobilized Cibacron blue. We found by site-directed mutagenesis and mass spectrometry that bCD38 was a monoglycosylated P5091 protein at Asn-201. The expression yield of the deglycosylated mutants was not significantly affected, indicating that glycosylation at Asn-201 was not required for a proper processing and secretion of this protein by A pastoris. Significant alterations in the kinetic parameters of NAD(+) were observed for the deglycosylated mutants. The thermo-stability of the recombinant enzyme was also influenced by mutation at position 201. Interestingly both parameters were dependent on the nature of the mutant and a stable deglycosylated mutant N201D of bCD38 could be produced that can be further used for structural studies. (C) 2009 Elsevier Inc. All rights reserved.”
“Recent in vivo studies have shown that erythropoietin (EPO) offers strong protection against brain edema. However, the intracellular and molecular mechanisms

behind this beneficial check details effect have not been specified. The aim of this study was to determine whether human erythropoietin (rhEPO) reduces the astrocytic swelling created by oxygen-glucose deprivation followed by reoxygenation (OGD/Reox) in vitro and whether this effect can be mediated through the modulation of aquaporin4 (AQP4) expression in the plasma

membrane (PM) and phosphorylation of the mitogen-activated protein kinase pathway (MAPK) pathway. Our results showed that OGD/Reox produced increase in cell volume, morphological swelling, and mitochondrial swelling. These changes were associated with the up-regulation of Adenylyl cyclase AQP4 in PM and the over-activation of MAPK. Silencing AQP4 expression using small interfering ribonucleic acid for AQP4 was found to block astrocytic swelling. Inhibition of the over-activation of MAPK mitigated the PM AQP4 overabundance and cellular swelling. As expected, treatment with rhEPO significantly reduced the OGD/Reox-induced increase in cell volume, morphological swelling, and mitochondrial swelling as well as the up-regulation of AQP4 in PM. In addition, cultures treated with the neutralizing anti-EPO antibody worsened the PM AQP4 abundance and cellular swelling, abolishing the protective effects mediated by rhEPO treatment. Furthermore, the over-activation of these MAPK after OGD/Reox was attenuated by rhEPO treatment significantly. In conclusion, our data strongly suggest that rhEPO can protect astrocytes from swelling caused by ischemia and reperfusion-like injury.

Using MS, we found that the wild-type (WT) and mutant pilins were

Using MS, we found that the wild-type (WT) and mutant pilins were glycosylated between amino acids 67 and 75. Analyses by quantitative MS and high-pH anion exchange chromatography (HPAEC) revealed that the glycan in WT pilin is composed of xylose and fucose, whereas an additional sugar, rhamnose,

was found in the glycan of sll0899::Cm(r) Our findings suggest that an alteration in the O-linked glycan of pilin is responsible for the loss of pilus-mediated motility find more in sll0899::Cm(r).”
“BACKGROUND

Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis is a severe condition encompassing two major syndromes: granulomatosis with polyangiitis (formerly known as Wegener’s granulomatosis) and microscopic polyangiitis. Its cause is unknown, and there is debate about whether it is a single disease entity and what role ANCA plays in its pathogenesis. We investigated its genetic basis.

METHODS

A genomewide association study was performed in a discovery cohort of 1233 U. K. patients with ANCA-associated vasculitis

and 5884 controls and was replicated in 1454 Northern European case patients and 1666 controls. Quality control, population stratification, and statistical analyses were performed according to standard criteria.

RESULTS

We found both major-histocompatibility-complex (MHC) and non-MHC associations with ANCA-associated selleck products vasculitis and also that granulomatosis with polyangiitis and microscopic polyangiitis were genetically distinct. The strongest genetic associations were with the antigenic specificity of ANCA, not with the clinical syndrome. Anti-proteinase 3 ANCA was associated Ceramide glucosyltransferase with HLA-DP and the genes encoding alpha(1)-antitrypsin (SERPINA1) and proteinase 3 (PRTN3) (P = 6.2×10(-89), P = 5.6×10(-12), and P =

2.6×10(-7), respectively). Anti-myeloperoxidase ANCA was associated with HLA-DQ (P = 2.1×10(-8)).

CONCLUSIONS

This study confirms that the pathogenesis of ANCA-associated vasculitis has a genetic component, shows genetic distinctions between granulomatosis with polyangiitis and microscopic polyangiitis that are associated with ANCA specificity, and suggests that the response against the autoantigen proteinase 3 is a central pathogenic feature of proteinase 3 ANCA-associated vasculitis. These data provide preliminary support for the concept that proteinase 3 ANCA-associated vasculitis and myeloperoxidase ANCA-associated vasculitis are distinct autoimmune syndromes. (Funded by the British Heart Foundation and others.)”
“Background: Several standard venous assessment tools have been used as independent determinants of venous disease severity, but correlation between these instruments as a global venous screening tool has not been tested. The scope of this study is to assess the validity of Venous Clinical Severity Scoring (VCSS) and its integration with other venous assessment tools as a global venous screening instrument.

Point mutations were introduced into the frameshift signal of an

Point mutations were introduced into the frameshift signal of an infectious RSV clone, and virus replication was monitored following transfection and subsequent infection of susceptible cells. The introduced mutations were designed to generate a range of frameshifting efficiencies, yet with minimal impact on encoded amino acids. Our results reveal that point

mutations leading to a 3-fold decrease in frameshifting efficiency noticeably reduce virus replication and that further reduction is severely inhibitory. In contrast, a 3-fold stimulation of frameshifting is well tolerated. These observations suggest that small-molecule inhibitors of frameshifting are likely to have potential as agents for antiviral intervention. During the course of this work, we were Selleckchem SHP099 able to confirm, for the Cyclopamine molecular weight first time in vivo, that the RSV stimulatory RNA is indeed an RNA pseudoknot but that the pseudoknot per se is not absolutely required for virus viability.”
“In the eating disorders (ED) comorbid depression is common and clinical experience suggests that it is partly related to starvation. Starvation affects thyroid hormone status and thyroid hypofunction is in turn associated with depressed mood. We have therefore investigated the possibility that thyroid hormones and starvation are associated with mood in ED. Two-hundred and thirty-nine adolescent girls were examined at presentation of an ED. Analyses

of thyroid hormones, documentation of weight and weight changes, self-reports of depressive symptomatology and clinical diagnoses of ED and depression were used in the analyses. Of the 239 girls 100 were diagnosed with depression. The girls with and without depression did not differ in age, weight, height, body mass index (BMI), weight loss or duration of disease. Plasma free thyroxine Amylase concentrations were lower in depressed girls (11.9 +/- 1.7 versus 12.8 +/- 1.9 pmol/L; p < 0.01).

Plasma triodothyronine and thyroid-stimulating hormone concentrations did not differ between groups. In a logistic regression analysis the odds ratio for depression was 41.1 (95% confidence interval 4.18-405; p = 0.001) for a 10 pmol/L change of plasma free thyroxine after correction for BMI, weight loss, duration of disease, rate of weight loss, plasma triodothyronine and an interaction between BMI and plasma free thyroxine. BMI did not predict depression. Low circulating thyroxine concentrations may provide a link between starvation and depression in adolescent girls with ED. (C) 2010 Elsevier Ltd. All rights reserved.”
“Phosphatidylinositol-4-kinase III alpha (PI4KIII alpha) is an essential host cell factor for hepatitis C virus (HCV) replication. An N-terminally truncated 130-kDa form was used to reconstitute an in vitro biochemical lipid kinase assay that was optimized for small-molecule compound screening and identified potent and specific inhibitors.

This outbreak highlights the importance of preventing raw-produce

This outbreak highlights the importance of preventing raw-produce contamination.”
“Since its discovery, human parvovirus B19

(B19V), now termed erythrovirus, has been associated with many clinical situations (neurological and myocardium infections, persistent B19V DNAemia) in addition to the prototype clinical manifestations, i.e., erythema infectiosum and erythroblastopenia crisis. In 2002, the use of new molecular tools led to the characterization of three different genotypes of human B19 erythrovirus. Although the genomic organization is conserved, the geographic distribution of the different genotypes varies worldwide, and the nucleotidic divergences can impact the molecular diagnosis of B19 virus infection. The cell cycle of the buy MRT67307 virus remains partially unresolved; however, recent studies have shed light on the mechanism of cell entry and the interactions of B19V proteins with apoptosis pathways.”
“BACKGROUND

The risk of cardiovascular events among patients with

atrial fibrillation is high. We evaluated whether irbesartan, an angiotensin-receptor blocker, would reduce this risk.

METHODS

We randomly assigned patients with a history of risk factors for stroke and a systolic blood pressure of at least 110 mm Hg to receive either irbesartan at a target dose of 300 mg once daily or double-blind placebo. These patients were already enrolled in one of two trials (of clopidogrel plus aspirin versus aspirin alone or versus oral anticoagulants). The first coprimary outcome was stroke, myocardial infarction, or death from vascular causes; the second was this Smad inhibitor composite outcome plus hospitalization for heart failure.

RESULTS

A LY294002 total of 9016 patients were enrolled and followed for a mean of 4.1 years. The mean reduction in systolic blood pressure was 2.9 mm Hg greater in the irbesartan group than in the placebo group, and the mean reduction in

diastolic blood pressure was 1.9 mm Hg greater. The first coprimary outcome occurred at a rate of 5.4% per 100 person-years in both groups (hazard ratio with irbesartan, 0.99; 95% confidence interval [CI], 0.91 to 1.08; P = 0.85). The second coprimary outcome occurred at a rate of 7.3% per 100 person-years among patients receiving irbesartan and 7.7% per 100 person-years among patients receiving placebo (hazard ratio, 0.94; 95% CI, 0.87 to 1.02; P = 0.12). The rates of first hospitalization for heart failure (a prespecified secondary outcome) were 2.7% per 100 person-years among patients receiving irbesartan and 3.2% per 100 person-years among patients receiving placebo (hazard ratio, 0.86; 95% CI, 0.76 to 0.98). Among patients who were in sinus rhythm at baseline, there was no benefit of irbesartan in preventing hospitalization for atrial fibrillation or atrial fibrillation recorded on 12-lead electrocardiography, nor was there a benefit in a subgroup that underwent transtelephonic monitoring.

6% and 84 8%, respectively, in chicken embryo fibroblast (CEF) ce

6% and 84.8%, respectively, in chicken embryo fibroblast (CEF) cells, while only pS(M641) significantly

decreased CPE, compared to the control group. These results indicated that the M gene 641 and 827 sites represent potential antiviral therapy targets, and RNAi targeting of the M gene could not only represent an effective treatment in Newcastle disease but also aid selleck inhibitor as a method for studying the replication of NDV. (C) 2010 Elsevier B.V. All rights reserved.”
“Mitochondrial dysfunction has been proposed to play a role in the pathogenesis of Parkinson s disease (PD) Supportive of this hypothesis several genetic variants that regulate mitochondrial function and homeostasis have been described to alter PD susceptibility A recent report demonstrated association of a single nucleotide polymorphism in the mitochondrial translation initiation factor 3 (MTIF3) gene with PD risk The protein encoded by this nuclear gene is essential for initiation complex formation on the mitochondrial 55S ribosome and regulates translation of proteins within the mitochondria Changes in the function or expression of the MTIF3 protein may result in altered mitochondrial function ATP FRAX597 production or formation of reactive oxygen

species thereby affecting susceptibility to PD We examined the association of rs7669 with sporadic PD in three Caucasian case control series (n = 2434) A significant association was observed in the largest series (Norwegian n = 1650) when comparing CC vs CT/TT genotypes with the Irish and US series having a similar but non-significant trend The combined series also revealed an association with risk of PD (P = 0 01) supporting the possible involvement of this gene in PD etiology Published by Elsevier Ireland Ltd”
“Thanks to new technologies which enable rapid and unbiased screening for viral nucleic acids in clinical specimens, an impressive number of previously unknown viruses have recently been discovered. Two research groups independently identified a novel negative-strand RNA virus, now designated avian bornavirus (ABV), in parrots with proventricular dilatation disease (PDD), a severe lymphoplasmacytic ganglioneuritis of the

gastrointestinal tract of psittacine birds that is frequently accompanied by encephalomyelitis. Since its discovery, ABV has been PI3K inhibitor detected worldwide in many captive parrots and in one canary with PDD. ABV induced a PDD-like disease in experimentally infected cockatiels, strongly suggesting that ABV is highly pathogenic in psittacine birds. Until the discovery of ABV, the Bornaviridae family consisted of a single species, classical Borna disease virus (BDV), which is the causative agent of a progressive neurological disorder that affects primarily horses, sheep, and some other farm animals in central Europe. Although ABV and BDV share many biological features, there exist several interesting differences, which are discussed in this review.

As gadolinium enhanced magnetic resonance imaging is an important

As gadolinium enhanced magnetic resonance imaging is an important tool in

selleck compound the diagnosis and surveillance of urological diseases, the severe consequences of nephrogenic systemic fibrosis demand that practicing urologists understand and know its history and treatment strategies.

Conclusions: This review provides clarification of the gadolinium based contrast agent characteristics, tissue interactions that lead to the development of nephrogenic systemic fibrosis, prevention possibilities and available treatment options.”
“Animal studies point to a role of estrogen in explaining gender differences in striatal dopaminergic functioning, but evidence from human studies is still lacking. Given that dopamine is crucial for controlling and organizing

goal-directed behavior, estrogen may have a specific impact on cognitive control functions, such as the inhibition of prepotent responses. We compared the efficiency of inhibitory control (as measured by the stop-signal task) GSK621 in young women across the three phases of their menstrual cycle (salivary estradiol and progesterone concentrations were assessed) and in young men. Women were less efficient in inhibiting prepotent responses in their follicular phase, which is associated with higher estradiol levels and with higher dopamine turnover rates, than in their luteal or menstruation phase. Likewise, women showed less efficient inhibitory control than men in their follicular phase but not in their luteal or menstruation phase. Our results are consistent with models assuming that the over-supply

of striatal dopamine in the follicular phase weakens inhibitory pathways, Cyclooxygenase (COX) thus leading to enhanced competition between responses. We conclude that gender differences in response inhibition are variable and state dependent but not structural. (C) 2010 IBRO. Published by Elsevier Ltd. All rights reserved.”
“Purpose: We hypothesized that from 1999 to 2008 patient and tumor selection criteria, perioperative outcomes, complications and renal function outcomes may have evolved significantly in 800 laparoscopic partial nephrectomies.

Materials and Methods: We retrospectively divided 800 patients who underwent laparoscopic partial nephrectomy for tumor, as done by 1 surgeon, into 3 chronologic eras, including era 1-276 from September 1999 to December 2003, era 2-289 from January 2004 to December 2006 and era 3-235 from January 2007 through November 2008. We evaluated prospectively collected data on tumor characteristics, perioperative outcomes and renal function outcomes.

Results: When comparing eras I to 3, tumors in the most recent era were larger, more commonly 4 cm or greater, and central, and less often peripheral and less than 4 cm (each p value significant). Despite increasing tumor complexity warm ischemia time was shorter (31.9, 31.6 and 14.4 minutes, respectively, p<0.

Older patients preferred pain relief/comfort as a treatment goal,

Older patients preferred pain relief/comfort as a treatment goal, but received fewer prescriptions for opioids. Whereas provider-initiated selleck chemical communication with patients/families was positively associated with severity of illness, patient/family-initiated

communication was associated with patient psychosocial attributes and care perspectives. Satisfaction with care was inversely associated with reports of pain. Symptom distress was positively associated with subsequent opioid prescriptions and hospitalizations.

Conclusions. Our results help to explain the role of patients’ psychosocial attributes, care perspectives, and preferences in subsequent care practices during the early treatment phase for late-stage cancer. Age-related differences in patient wellbeing and care perspectives suggest a role for age-sensitive interventions

in the treatment of advanced cancer patients.”
“Study aims. -The topography of the peaks of tibial.-nerve somatosensory evoked potential (SEP) varies among healthy subjects, most likely because of differences in position and orientation of their cortical generator(s). Therefore, amplitude estimation with a standard one- or two-channel derivation is likely to be inaccurate and might partly cause the low sensitivity of SEP amplitude to pathological selleck chemicals changes. In this study, we investigate whether 128-channel tibiat-nerve SEP recordings can improve amplitude estimation and reduce the coefficient of variation.

Methods. -We recorded tibial-nerve SEPs using a 128-channel. EEG system in 48 healthy subjects aged 20 to 70 years (47 provided analyzable data). We compared P39, N50, and P60 amplitudes obtained with a 128-channel analysis method (based on butterfly plots and spatial topographies) with those obtained using a one-channel conventional configuration and analysis. Scalp and earlobe references were compared.

Results. -Tibial-nerve SEP amplitudes obtained with the 128-channel method were significantly higher as compared clonidine to the one-channel

conventional method. Consequently, the coefficient of variation was lower for the 128-channel method. In addition, in both methods, the N50-peak amptitude was sometimes hard to identify, because of its low amplitude. Besides, in some subjects, the N50 peak, as obtained with the conventional method, rather seemed to be a period between two positivities rather than an activation peak on itself.

Conclusions. -The 128-channel method can measure tibial.-nerve SEP amplitude more accurately and might therefore be more sensitive to pathological changes. Our results indicate that the N50 component is less useful for clinical practice. (c) 2008 Elsevier Masson SAS. All rights reserved.”
“Background. We examined whether questions addressing the effect of pain on day-to-day function add unique information to the standardized verbal descriptor scale for pain severity in nursing homes (NHs).

Methods.

The combination of all times was reflected in the total care time

The combination of all times was reflected in the total care time (TCT) for each procedure. We recorded all physician fees collected for each procedure.

This total fee collected for each procedure was then divided by the TCT to determine the procedure-specific payment per unit time. All similar procedures were grouped together and the average reimbursement per procedure was reported.

Results: Data was collected on all 1103 procedures performed during this period. Insurance carrier distribution was 75% Medicare and 25% private insurance. The average reimbursement was $316/hour for open procedures and $556/hour for endovascular. Higher reimbursing procedures included visceral endovascular procedures ($701/hour) and caval filters ($751/hour). Lower reimbursing procedures included lower extremity bypass ($292/hour), dialysis access ($268/hour) and selleck chemical lower extremity amputations ($223/hour). Striking was the difference between Selleck PSI-7977 payment based on approach for similar conditions. Reimbursement for carotid stent vs carotid endarterectomy was $643/hour vs $383/hour, endovascular abdominal

aortic aneurysm (AAA) repair vs open $593/hour vs $359/hour.

Conclusion: This unique study demonstrates a “”real world”" experience of reimbursement per unit time and raises questions as to the validity of the RBRVS process. The disparity between payments for open and endovascular repair of similar conditions are typical of this inequality. These data do

not reflect the intangible time of operative planning, administrative matters, or overhead, and these factors must be considered when interpreting this data. Regardless, this study suggests that capturing detailed financial data is possible and is a more accurate source for future discussions on reimbursement. (J Vasc Surg 2010;52:1094-9.)”
“The non-competitive N-methyl-D-aspartate NMDA receptor antagonist ketamine, a dissociative anesthetic capable of inducing analgesia, is known to have psychotomimetic actions, but the Aldol condensation detailed mechanisms remain unclear because of its complex properties. The present study elucidated neural mechanisms of the effect of ketamine, at doses that exert psychotomimetic effects without anesthetic and analgesic effects, by evaluating cortical synaptic responses vivo. Systemic administration (i.p.) of low (1 and 5 mg/kg), subanesthetic (25 mg/kg) and anesthetic (100 mg/kg) doses of ketamine dose-dependently decreased hippocampal stimulation-evoked potential in the medial prefrontal cortex (mPFC) in freely moving rats. The behavioral analysis assessed by prepulse inhibition (PPI) of acoustic startle response showed that ketamine (5 and 25 mg/kg, i.p.) produced PPI deficit. Thus, the psychotomimetic effects observed in ketamine-treated groups (5 and 25 mg/kg, i.p.) are associated with the induction of synaptic depression in the hippocampus-mPFC neural pathway.

This suggests the

presence of inhibitory

This suggests the

presence of inhibitory DAPT solubility dmso GABAergic modulation of distal brain regions in response to chronic epileptiform activity. (C) 2013 Elsevier Ireland Ltd. All rights reserved.”
“Binding, washing and elution conditions for MEP HyperCel chromatography were examined using two conditioned media (CM) containing monoclonal antibodies (humanized IgG1) and bovine serum albumin (BSA). Monoclonal antibodies derived from mammalian expression system bound to the column without pretreatment, although a majority of contaminating proteins present in the CM also showed binding. Inorganic salts, ethanol and glycerol were ineffective in eluting proteins under the conditions examined, suggesting that electrostatic or hydrophobic interactions are not a major factor for antibody binding to the

MEP resin. Ethylene glycol, 2-propanol, urea and arginine were effective, to varying degrees, in elution of the bound proteins. The bound contaminating proteins and BSA were effectively eluted with ethylene glycol and the bound antibodies were finally eluted with aqueous arginine solutions at neutral pH. MEP showed selectivity toward BSA and hence utility for removing BSA from the samples. Interestingly. Fc-fusion proteins derived from silkworm larvae showed no detectable binding. Serum proteins present in silkworm larvae strongly competed with the Fc-fusion proteins and monoclonal antibody for binding to MEP resin, while the same Fc-fusion proteins can be readily purified in one-step by Protein-A resin, again confirming weak selectivity of the MEP resin. (C) 2009 Elsevier Inc. All rights reserved.”
“In this study, we hypothesized Selleckchem CH5183284 that steady pink noise is able to change the complexity of brain activities into a characteristic level and it might have significant effect on improving sleep stability.

First, we carried out the brain synchronization test in which electroencephalogram (EEG) signals of 6 subjects were recorded. The whole experiment procedure was divided into 5 blocks in the alternative feeding process of 10-min quiet and 10-min noise. After the complexity analysis of fractal dimension,

we found that the complexity of the EEG signals decreased with the introduction of the pink noise exposure, showing the brain waves tended to synchronize with the pink noise induction to reach a PTK6 low level.

For the sleep quality experiment, 40 subjects were recruited the group of nocturnal sleep experiment and 10 participants were chosen for nap test. Each subjects slept for two consecutive experimental periods, of which one is pink noise exposed and the other is quiet. For both nocturnal sleep and nap tests, the results in the noise exposure group showed significant enhancement in the percentage of stable sleep time compared to the control group based on the analysis of electrocardiography (ECG) signal with cardiopulmonary coupling approach.