Publications by authors named "Ziviani L"

Background: Autotaxin-lysophosphatidic acid (ATX-LPA) signaling has a predominant role in immunological and fibrotic processes, including cancer. Several ATX inhibitors and LPA receptor antagonists have been clinically evaluated, but none in patients with solid tumors. Many cancers are burdened with a high degree of fibrosis and an immune desert phenotype (so-called 'cold' tumors).

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Tobacco heating products (THPs) have reduced emissions of toxicants compared with cigarette smoke, and as they expose user to lower levels than smoking, have for a role to play in tobacco harm reduction. One key concern of Public Health is that new tobacco and nicotine products should not be more addictive than cigarettes. To assess their abuse liability, we determined nicotine pharmacokinetics and subjective effects of two THPs compared with conventional cigarettes and a nicotine replacement therapy (Nicotine inhaler).

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Unlabelled: Stress affects the immune system and intestinal microbiota composition and can lead to imbalance between pro- and anti-inflammatory cytokines or to uncontrolled production of cytokines. The effect of emotional stress on secretory IgA levels also indicates that stress decreases mucosal integrity. Our aim was to evaluate whether a probiotic product (Lactoflorene Plus) can prevent alterations in the immune response associated with self-reported stress and microbiota composition.

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Objective: The goal of this study was to evaluate the sleep quality and daytime sleepiness of patients eligible for liver transplants.

Methods: A cross-sectional prospective study was conducted on liver transplant candidates from a transplant center in the interior of São Paulo State. The Pittsburgh Sleep Quality Index and Epworth Sleepiness Scale questionnaires were applied to obtain demographic and clinical characteristics and to assess sleep quality and daytime sleepiness.

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The objective of the present study was to determine the anxiety and stress levels of liver transplant candidates during the preoperative period. A cross-sectional, prospective study was conducted on 52 liver transplantation candidates seen at a specialized public hospital outpatient clinic in the interior of the state of São Paulo, Brazil. Data were collected from November 2014 to April 2015 using a self-applicable questionnaire for the assessment of anxiety (State-Trait Anxiety Inventory, short version) and stress (Perceived Stress Scale), in addition to sociodemographic and clinic characterization.

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Objective To assess the information needs of family caregivers of candidates on the waiting list for a liver transplant. Methods It is a cross-sectional study conducted in a transplant center in São Paulo State in the period between April and October of 2012. For the assessment of information needed, an instrument submitted to face and content value was used.

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The goal of this study was to assess the effects of anxiety and stress on sleep quality in liver transplantation recipients. A prospective cross-sectional study was performed including 45 recipients enrolled at a liver transplantation program at Ribeirão Preto, State of São Paulo, Brazil. Anxiety and stress were evaluated by using a reduced version of the State-Trait Anxiety Inventory and the Perceived Stress Scale, respectively.

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The pharmacological properties of two NK1 antagonists were studied in comparison with a benzodiazepine during a 7% CO2 challenge in a population of healthy volunteers selected for a high sensitivity to the challenge. In total, 19 healthy subjects, pre-screened for their responsiveness to the 7% CO2 test, took part in the randomised, double-blind, cross-over, incomplete block design study. After receiving treatment or placebo, the volunteers were subjected to three 7% CO2 challenges each for a time of 20 min.

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The incidence of skin cancer after liver transplant ranges from 3% to 16%, considerably higher than that observed in the general population. Skin cancer causes 25% of deaths in patients who have survived more than 3 years after liver transplant. The objective of this study was to identify differences regarding the level of sun exposure, knowledge of potential risk factors, and photoprotection measures among liver transplant candidates and recipients.

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'Information need' is defined as a deficiency of information or skill related to a domain of life that is relevant to the patient. This study's objective was to identify the information needs of candidates on the waiting list for a liver transplant. This is a descriptive study and was conducted at a transplant center in the State of São Paulo-Brazil.

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Objectives: To evaluate the postoperative analgesic efficacy of GW842166, a noncannabinoid CB2 agonist, in patients undergoing third molar tooth extraction.

Methods: This randomized, double-blind, placebo-controlled study compared the analgesic efficacy of single doses of GW842166 (100 or 800 mg) or ibuprofen with placebo in patients undergoing extraction of at least 1 fully or partially impacted third molar tooth. Eligible participants were dosed preoperatively within 1 hour of surgery.

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The aim of this study was to describe the frequency and features of delayed alcohol-induced headache (DAIH) among university students. Ninety-five students were administered a headache questionnaire approximately 12 hours after have being exposed to high alcohol intake. Headache was mostly diffuse (44.

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Rationale: Sustained-release (SR) bupropion enhances quit rates of smokers, generally decreases tobacco withdrawal, and in some studies, reduces craving.

Objective: Investigate the effects of SR bupropion on craving and withdrawal during cigarette abstinence.

Methods: Twenty three smokers participated in three 17-day periods composed of 14 out-patient days followed by 3 (72 h) in-patient days.

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We investigated resting EEG and auditory P300 during free smoking and 36 h of enforced smoking abstinence in 12 healthy volunteers. Resting EEG was recorded on 19 scalp leads and auditory P300 was obtained by an oddball paradigm task. Spectral analysis of EEG (absolute and relative power, mean frequency), latency and amplitude of auditory P300 were considered for statistical analysis.

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Rationale: Research on the effects of nicotine abstinence and nicotine replacement has not provided consistent information about the impact of replacement therapies on tobacco withdrawal and craving.

Objective: . This study investigated craving and withdrawal symptoms over a 72-h period of abstinence from cigarettes.

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The neuroprotective activity of GV150526 (3-[2-(Phenylaminocarbonyl)ethenyl]-4,6-dichloroindole-2-carboxylic acid sodium salt), a selective glycine receptor antagonist of the NMDA receptor, has been evaluated by magnetic resonance imaging (MRI) in a rat model of middle cerebral artery occlusion. The aim of the work was to evaluate, using an in vivo method, whether GV150526 was able to reduce the extent of ischemic brain damage when administered both before and after (6 h) middle cerebral artery occlusion. GV150526 was administered at a dose of 3 mg/kg i.

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Objective: To investigate the potential for systemic pharmacodynamic and pharmacokinetic interactions between inhaled salmeterol and fluticasone propionate when repeat doses of the two drugs are given in combination to healthy subjects.

Methods: Twenty-eight healthy subjects received salmeterol 100 microg, salmeterol 100 microg/fluticasone propionate 500 microg and fluticasone propionate 500 microg via a Diskus dry powder inhaler twice daily for 11 days according to a randomised, double-blind, placebo-controlled, crossover design. Subjects in the placebo group also received a single dose of salmeterol 100 microg on the morning of day 10.

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Aims: Lacidipine, a long acting 2, 4-dihydropyridine calcium channel antagonist is frequently administered with cholesterol lowering agents, particularly in elderly populations. The effects of lacidipine on the pharmacokinetics of simvastatin were investigated, since they share the CYP3A4 pathway for metabolism.

Methods: The study was an open, randomised, two-way crossover design, with at least 7 days washout.

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Fluticasone propionate pressurized metered dose inhalers (pMDIs) containing the hydrofluoroalkane (HFA) propellant, HFA 134a, are being developed to replace existing chlorofluorocarbon (CFC) pMDIs. This is part of the ongoing worldwide project to limit the damage to the earth's ozone layer. The in vivo performance and dose proportionality of fluticasone propionate HFA 134a pMDIs was examined for fluticasone propionate doses of 400, 1000 and 2000 microg using the 50, 125 and 250 microg strength pMDIs, respectively.

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The neuroprotective activity of the novel, selective glycine antagonist GV150526 was assessed in the middle artery occlusion (MCAo) model of focal ischemia. Postischemia administration of GV150526 (3 mg/kg i.v.

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Magnetic resonance imaging has proved to be the best technique to visualise the sella and juxtasellar area and it is used successfully to evaluate children with hypopituitarism or other endocraniological disorders in this area. The Authors present two cases of "empty sella syndrome", both characterized by growth hormone deficiency associated with precocious puberty in one case and with delayed puberty in the other one. The Authors stress the importance of magnetic resonance imaging in defining the morphological aspects of the hypothalamo-pituitary region and that empty sella can be associated either with pituitary hypofunction or hyperfunction.

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In the rat, normal blood flow can be restored in the territory of the occluded artery after an arterial occlusion. This event has been attributed to changes in the collateral vessels supplying the territory of the occluded artery. Since only a limited amount of data is available about the plasticity of the microvascular system after a cortical ischemic lesion, in the present study we have evaluated whether the restoration of blood flow to normal levels in the territory of the middle cerebral artery after permanent ischemia is due only to flow through preexisting collateral vessels or also to the development of new microvessels.

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