Improving cuff-less continuous blood pressure estimation with linear regression analysis

In this work, the authors investigate the cuff-less estimation of continuous BP through pulse transit time (PTT) and heart rate (HR) using regression techniques, which is intended as a first step towards continuous BP estimation with a low error, according to AAMI guidelines. Hypertension (the 'silent killer') is one of the main risk factors for cardiovascular diseases (CVDs), which are the main cause of death worldwide. Its continuous monitoring can offer a valid tool for patient care, as blood pressure (BP) is a significant indicator of health and, using it together with other parameters, such as heart and breath rates, could strongly improve prevention of CVDs. The novelties introduced in this work are represented by the implementation of pre-processing and by the innovative method for features research and features processing to continuously monitor blood pressure in a non-invasive way. Currently, invasive methods are the only reliable methods for continuous monitoring, while non-invasive techniques measure the values every few minutes. The proposed approach can be considered the first step for the integration of these types of algorithms on wearable devices, in particular on those developed for the SINTEC project

Pharmacological Blockade of Serotonin 5-HT7 Receptor Reverses Working Memory Deficits in Rats by Normalizing Cortical Glutamate Neurotransmission

The role of 5-HT7 receptor has been demonstrated in various animal models of mood disorders; however its function in cognition remains largely speculative. This study evaluates the effects of SB-269970, a selective 5-HT7 antagonist, in a translational model of working memory deficit and investigates whether it modulates cortical glutamate and/or dopamine neurotransmission in rats. The effect of SB-269970 was evaluated in the delayed non-matching to position task alone or in combination with MK-801, a non-competitive NMDA receptor antagonist, and, in separate experiments, with scopolamine, a non-selective muscarinic antagonist. SB-269970 (10 mg/kg) significantly reversed the deficits induced by MK-801 (0.1 mg/kg) but augmented the deficit induced by scopolamine (0.06 mg/kg). The ability of SB-269970 to modulate MK-801-induced glutamate and dopamine extracellular levels was separately evaluated using biosensor technology and microdialysis in the prefrontal cortex of freely moving rats. SB-269970 normalized MK-801 -induced glutamate but not dopamine extracellular levels in the prefrontal cortex. Rat plasma and brain concentrations of MK-801 were not affected by co-administration of SB-269970, arguing for a pharmacodynamic rather than a pharmacokinetic mechanism. These results indicate that 5-HT7 receptor antagonists might reverse cognitive deficits associated with NMDA receptor hypofunction by selectively normalizing glutamatergic neurotransmission

Self-administration of methohexital, midazolam and ethanol: effects on the pituitary–adrenal axis in rhesus monkeys

There is disagreement in the literature with respect to how drugs of abuse affect the functioning of the hypothalamic–pituitary–adrenal (HPA) axis, and whether these changes in endocrine function may be related to the rewarding effects of these drugs.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/46363/1/213_2004_Article_1986.pd

Endoscopic sinus surgery associated with rhinoseptoplasty: A case-control study

Objective: To examine the difference between outcomes in the administration of concurrent endoscopic sinus surgery (ESS), septoplasty (SP), and rhinoplasty (RP) and concurrent ESS and SP in 1 single surgical session. Methods: Patients who underwent concurrent ESS and SP from September 2004 to July 2015 were identified. Furthermore, patients among them who underwent functional primary RP were selected. Subjects who had been administered concurrent ESS, SP, and RP (primary RP) were matched for sex, age, sinonasal surgical procedures for treatment of chronic rhinosinusitis with patients underwent concurrent ESS and SP, used as control subjects. A literature review was performed to find previous articles describing results of concurrent procedures among ESS, SP, and RP. Results: Twenty subjects, who underwent concurrent ESS, SP, and RP, were compared with a matched control group made of 20 patients who underwent concurrent ESS and SP, evaluating different postoperative outcomes (postoperative complications, postoperative improvement of respiratory symptoms, persistence of chronic rhinosinusitis symptoms 6 months to 1 year postoperative, need of revision surgery, satisfaction of the patient). Obtained P values showed that there was no statistically significant difference (P > 0.05) as regards the different outcomes, except for postoperative complications, increased because of the invasiveness proper of RP (P < 0.05). Conclusions: Therefore, execution of concurrent ESS, SP, and RP seems to be safe and effective, and additional RP does not modify postoperative outcomes of concurrent ESS and SP except for a little increase of postoperative complications, even if most of them had low impact on result of procedures

Time spent in therapy: how to measure the burden of disease for cystic fibrosis

Methods: Screening was undertaken in 2016 and 2018, using the PHQ9 and the GAD7, with reasons for non-participation identified. Lung function (LF), prescribed MH medication, contacts with the CF psychologist and the use of external MH care were documented. Results: 119/157 adult patients participated in MH screening (once n= 36; twice n= 83). Reasons for non-participation were varied: refusal, other needs, missed at clinic visit, transplantation, learning difficulties, psychiatric problems. 33/157 patients were prescribed MH medication: anxiolytics (8); antidepressants (AD)(8); sleep medication (4); combination sleep/AD (12); other (1). The prescribing doctors were: CF physician (19), psychiatrist (8), and GP (6). Of these, 8 patients did not participate in MH screening; 25 consulted the CF psychologist more than 3 times a year, 7 also had an external therapist (4 had screened \u2018no symptoms\u2019). Between 2016 \u202

The positive allosteric modulator at mGlu2 receptors, LY487379, reverses the effects of chronic stress-induced behavioral maladaptation and synaptic dysfunction in the adulthood

Chronic stress induces maladaptive neural responses in several brain areas including hippocampus. It has been demonstrated that chronic stress exposure induced a downregulation of the putative presynaptic type 2 metabotropic glutamate (mGlu2) receptors, which would reduce the negative feedback role exerted by these receptors. The reduced availability of these receptors would enhance glutamate overflow in the hippocampus, supporting the hypothesis that hippocampal glutamatergic neurotransmission plays a key etiopathological determinant in stress-induced neuropsychiatric disorders. Since modulation of glutamatergic neurotransmission has been shown to represent an interesting pharmacological tool to treat psychiatric disorders, in the present study we have investigated the effects of the mGlu2 receptor positive allosteric modulator (PAM) LY487379. The rational bases of our study were: (a) chronic restraint stress (CRS) application in C57/BALB6 mouse induced a loss of resilience at the behavioral, biochemical, and electrophysiological level; (b) a superimposed familiar stressor (restraint) but not unfamiliar (i.e., forced swim stress) completely reversed the effects of CRS. Using the CRS model, in the present study we have investigated the effects of LY487379, an mGlu2 PAM, as well as a superimposed familiar stressor (acute restraint stress-ARS), on the immobility time at the tail suspension test and electrophysiological profile of glutamatergic transmission in the dentate gyrus (DG)