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1.
Artigo em Inglês | MEDLINE | ID: mdl-38769052

RESUMO

AIMS: The study aims are to present the Italian adaptation of the Abbreviated Clinical Structured Interview for DSM-5 Attenuated Psychosis Syndrome (Mini-SIPS) and illustrate its implementation in a clinical setting. METHODS: The Mini-SIPS was developed from the original extended version as a tool designed to identify, within the clinical high risk (CHR) framework, the DSM-5 Attenuated Psychosis Syndrome (APS) and to be implemented in clinical settings. The Mini-SIPS was translated in Italian by a Yale-certified SIPS trainer, then back-translated in English by a trained psychologist, then approved by the Mini-SIPS authors. Since September 2021, the adapted Italian version of the Mini-SIPS has been implemented at the First Episode Psychosis (FEP) Program in Ferrara, Italy. RESULTS: The Italian version of Mini-SIPS was successfully administered to 15 individuals subsequently referred to the First Episode Psychosis service in Ferrara. Within this sample, the tool has proven to be both an effective and efficient tool for the identification of CHR and FEP, and a valid instrument to help with the differential diagnosis. It also performed as a valuable guide for retrieving information about psychiatric history, to date the onset of APS and/or full-blown psychosis, to track the progression from CHR to psychosis or to symptoms resolution and to describe patients' pathways to care. CONCLUSION: The Mini-SIPS is an efficient and easy-to-use interview to identify the early stages of psychosis and established psychosis in clinical contexts. The Italian adaptation of this interview could be effectively implemented in other Italian FEP Programs as a screening and monitoring tool. Formal validation of the instrument is needed to assessed validity and reliability in the diagnosis of the CHR and FEP.

2.
ACS Nano ; 18(19): 12427-12452, 2024 May 14.
Artigo em Inglês | MEDLINE | ID: mdl-38687909

RESUMO

Light-driven modulation of neuronal activity at high spatial-temporal resolution is becoming of high interest in neuroscience. In addition to optogenetics, nongenetic membrane-targeted nanomachines that alter the electrical state of the neuronal membranes are in demand. Here, we engineered and characterized a photoswitchable conjugated compound (BV-1) that spontaneously partitions into the neuronal membrane and undergoes a charge transfer upon light stimulation. The activity of primary neurons is not affected in the dark, whereas millisecond light pulses of cyan light induce a progressive decrease in membrane resistance and an increase in inward current matched to a progressive depolarization and action potential firing. We found that illumination of BV-1 induces oxidation of membrane phospholipids, which is necessary for the electrophysiological effects and is associated with decreased membrane tension and increased membrane fluidity. Time-resolved atomic force microscopy and molecular dynamics simulations performed on planar lipid bilayers revealed that the underlying mechanism is a light-driven formation of pore-like structures across the plasma membrane. Such a phenomenon decreases membrane resistance and increases permeability to monovalent cations, namely, Na+, mimicking the effects of antifungal polyenes. The same effect on membrane resistance was also observed in nonexcitable cells. When sustained light stimulations are applied, neuronal swelling and death occur. The light-controlled pore-forming properties of BV-1 allow performing "on-demand" light-induced membrane poration to rapidly shift from cell-attached to perforated whole-cell patch-clamp configuration. Administration of BV-1 to ex vivo retinal explants or in vivo primary visual cortex elicited neuronal firing in response to short trains of light stimuli, followed by activity silencing upon prolonged light stimulations. BV-1 represents a versatile molecular nanomachine whose properties can be exploited to induce either photostimulation or space-specific cell death, depending on the pattern and duration of light stimulation.


Assuntos
Neurônios , Neurônios/efeitos dos fármacos , Neurônios/metabolismo , Animais , Membrana Celular/metabolismo , Membrana Celular/química , Luz , Bicamadas Lipídicas/química , Simulação de Dinâmica Molecular , Ratos , Camundongos , Optogenética
3.
Diagnostics (Basel) ; 14(8)2024 Apr 09.
Artigo em Inglês | MEDLINE | ID: mdl-38667431

RESUMO

The measurement of partial pressures of oxygen (O2) and carbon dioxide (CO2) is fundamental for evaluating a patient's conditions in clinical practice. There are many ways to retrieve O2/CO2 partial pressures and concentrations. Arterial blood gas (ABG) analysis is the gold standard technique for such a purpose, but it is invasive, intermittent, and potentially painful. Among all the alternative methods for gas monitoring, non-invasive transcutaneous O2 and CO2 monitoring has been emerging since the 1970s, being able to overcome the main drawbacks of ABG analysis. Clark and Severinghaus electrodes enabled the breakthrough for transcutaneous O2 and CO2 monitoring, respectively, and in the last twenty years, many innovations have been introduced as alternatives to overcome their limitations. This review reports the most recent solutions for transcutaneous O2 and CO2 monitoring, with a particular consideration for wearable measurement systems. Luminescence-based electronic paramagnetic resonance and photoacoustic sensors are investigated. Optical sensors appear to be the most promising, giving fast and accurate measurements without the need for frequent calibrations and being suitable for integration into wearable measurement systems.

4.
Front Physiol ; 14: 1186475, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37670771

RESUMO

In teleosts, two PepT1-type (Slc15a1) transporters, i.e., PepT1a and PepT1b, are expressed at the intestinal level. They translocate charged di/tripeptides with different efficiency, which depends on the position of the charged amino acid in the peptide and the external pH. The relation between the position of the charged amino acid and the capability of transporting the dipeptide was investigated in the zebrafish and Atlantic salmon PepT1-type transporters. Using selected charged (at physiological pH) dipeptides: i.e., the negatively charged Asp-Gly and Gly-Asp, and the positively charged Lys-Gly and Gly-Lys and Lys-Met and Met-Lys, transport currents and kinetic parameters were collected. The neutral dipeptide Gly-Gln was used as a reference substrate. Atlantic salmon PepT1a and PepT1b transport currents were similar in the presence of Asp-Gly and Gly-Asp, while zebrafish PepT1a elicited currents strongly dependent on the position of Asp in the dipeptide and zebrafish PepT1b elicited small transport currents. For Lys- and Met-containing dipeptides smaller currents compared to Gly-Gln were observed in PepT1a-type transporters. In general, for zebrafish PepT1a the currents elicited by all tested substrates slightly increased with membrane potential and pH. For Atlantic salmon PepT1a, the transport current increased with negative potential but only in the presence of Met-containing dipeptides and in a pH-dependent way. Conversely, large currents were shown for PepT1b for all tested substrates but Gly-Lys in Atlantic salmon. This shows that in Atlantic salmon PepT1b for Lys-containing substrates the position of the charged dipeptides carrying the Lys residue defines the current amplitudes, with larger currents observed for Lys in the N-terminal position. Our results add information on the ability of PepT1 to transport charged amino acids and show species-specificity in the kinetic behavior of PepT1-type proteins. They also suggest the importance of the proximity of the substrate binding site of residues such as LysPepT1a/GlnPepT1b for recognition and specificity of the charged dipeptide and point out the role of the comparative approach that exploits the natural protein variants to understand the structure and functions of membrane transporters.

5.
J Physiol ; 600(10): 2377-2400, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35413133

RESUMO

The high-affinity/low-capacity system Slc15a2 (PepT2) is responsible for the reuptake of di/tripeptides from the renal proximal tubule, but it also operates in many other tissues and organs. Information regarding PepT2 in teleost fish is limited and, to date, functional data are available from the zebrafish (Danio rerio) only. Here, we report the identification of two slc15a2 genes in the Atlantic salmon (Salmo salar) genome, namely slc15a2a and slc15a2b. The two encoded PepT2 proteins share 87% identity and resemble both structurally and functionally the canonical vertebrate PepT2 system. The mRNA tissue distribution analyses reveal a widespread distribution of slc15a2a transcripts, being more abundant in the brain and gills, while slc15a2b transcripts are mainly expressed in the kidney and the distal part of the gastrointestinal tract. The function of the two transporters was investigated by heterologous expression in Xenopus laevis oocytes and two-electrode voltage-clamp recordings of transport and presteady-state currents. Both PepT2a and PepT2b in the presence of Gly-Gln elicit pH-dependent and Na+ independent inward currents. The biophysical and kinetic analysis of the recorded currents defined the transport properties, confirming that the two Atlantic salmon PepT2 proteins behave as high-affinity/low-capacity transporters. The recent structures and the previous kinetic schemes of rat and human PepT2 qualitatively account for the characteristics of the two Atlantic salmon proteins. This study is the first to report on the functional expression of two PepT2-type transporters that operate in the same vertebrate organism as a result of (a) gene duplication process(es). KEY POINTS: Two slc15a2-type genes, slc15a2a and slc15a2b coding for PepT2-type peptide transporters were found in the Atlantic salmon. slc15a2a transcripts, widely distributed in the fish tissues, are abundant in the brain and gills, while slc15a2b transcripts are mainly expressed in the kidney and distal gastrointestinal tract. Amino acids involved in vertebrate Slc15 transport function are conserved in PepT2a and PepT2b proteins. Detailed kinetic analysis indicates that both PepT2a and PepT2b operate as high-affinity transporters. The kinetic schemes and structures proposed for the mammalian models of PepT2 are suitable to explain the function of the two Atlantic salmon transporters.


Assuntos
Salmo salar , Simportadores , Animais , Cinética , Mamíferos/metabolismo , Oócitos/metabolismo , Ratos , Salmo salar/genética , Salmo salar/metabolismo , Simportadores/genética , Simportadores/metabolismo , Peixe-Zebra/genética
6.
Neurochem Res ; 47(1): 111-126, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34304372

RESUMO

To the SLC6 family belong 20 human transporters that utilize the sodium electrochemical gradient to move biogenic amines, osmolytes, amino acids and related compounds into cells. They are classified into two functional groups, the Neurotransmitter transporters (NTT) and Nutrient amino acid transporters (NAT). Here we summarize how since their first cloning in 1998, the insect (Lepidopteran) Orthologs of the SLC6 family transporters have represented very important tools for investigating functional-structural relationships, mechanism of transport, ion and pH dependence and substate interaction of the mammalian (and human) counterparts.


Assuntos
Proteínas de Transporte , Proteínas de Membrana , Sistemas de Transporte de Aminoácidos/metabolismo , Animais , Proteínas de Transporte/metabolismo , Humanos , Proteínas de Insetos/química , Proteínas de Insetos/genética , Proteínas de Insetos/metabolismo , Mamíferos/metabolismo , Proteínas de Membrana/metabolismo , Relação Estrutura-Atividade
7.
SLAS Discov ; 26(6): 798-810, 2021 07.
Artigo em Inglês | MEDLINE | ID: mdl-33825579

RESUMO

Membrane proteins are involved in different physiological functions and are the target of pharmaceutical and abuse drugs. Xenopus laevis oocytes provide a powerful heterologous expression system for functional studies of these proteins. Typical experiments investigate transport using electrophysiology and radiolabeled uptake. A two-electrode voltage clamp is suitable only for electrogenic proteins, and uptake measurements require the existence of radiolabeled substrates and adequate laboratory facilities.Recently, Dictyostelium discoideum Nramp1 and NrampB were characterized using multidisciplinary approaches. NrampB showed no measurable electrogenic activity, and it was investigated in Xenopus oocytes by acquiring confocal images of the quenching of injected fluorophore calcein.This method is adequate to measure the variation in emitted fluorescence, and thus transporter activity indirectly, but requires long experimental procedures to collect statistically consistent data. Considering that optimal expression of heterologous proteins lasts for 48-72 h, a slow acquiring process requires the use of more than one batch of oocytes to complete the experiments. Here, a novel approach to measure substrate uptake is reported. Upon injection of a fluorophore, oocytes were incubated with the substrate and the transport activity measured, evaluating fluorescence quenching in a microplate reader. The technique permits the testing of tens of oocytes in different experimental conditions simultaneously, and thus the collection of significant statistical data for each batch, saving time and animals.The method was tested with different metal transporters (SLC11), DMT1, DdNramp1, and DdNrampB, and verified with the peptide transporter PepT1 (SLC15). Comparison with traditional methods (uptake, two-electrode voltage clamp) and with quenching images acquired by fluorescence microscopy confirmed its efficacy.


Assuntos
Fenômenos Eletrofisiológicos , Proteínas de Membrana Transportadoras/metabolismo , Técnicas de Patch-Clamp/métodos , Animais , Transporte Biológico , Proteínas de Transporte de Cátions/metabolismo , Proteínas de Transporte de Cátions/fisiologia , Dictyostelium/metabolismo , Feminino , Fluoresceínas/farmacocinética , Corantes Fluorescentes/farmacocinética , Potenciais da Membrana , Microscopia de Fluorescência , Oócitos/química , Oócitos/metabolismo , Xenopus laevis
8.
Ann Ist Super Sanita ; 57(1): 7-17, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33797399

RESUMO

BACKGROUND: During epidemics, health care workers (HCWs) are particularly exposed to the risk of secondary trauma. If not effectively addressed, the consequences of such psychological distress can progress to more severe conditions. METHODS: A systematic search of several databases on the effect of SARS, MERS, and COVID-19 epidemics on the mental health of HCWs was performed according to both the Cochrane Handbook for Systematic Reviews of Interventions and the WHO Rapid Review Guide for Health Policy and Systems Research. RESULTS: The 77 reviewed studies highlighted that work organization and individual characteristics can add to mental health risk. Providing adequate training to prevent infection and prepare HCWs to handle the epidemic, strengthening team work to improve organization, and ensuring appropriate protective equipment is available can help prevent risk of psychiatric illness. CONCLUSIONS: Monitoring and addressing through tailored interventions the mental health consequences of pandemics in HCWs is necessary.


Assuntos
Epidemias , Pessoal de Saúde/psicologia , Transtornos Mentais/epidemiologia , Doenças Profissionais/epidemiologia , Doenças Profissionais/psicologia , COVID-19 , Humanos , Transtornos Mentais/terapia , Doenças Profissionais/terapia , Fatores de Risco
10.
Am J Physiol Cell Physiol ; 318(1): C191-C204, 2020 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-31664857

RESUMO

Peptide transporter 1 (PepT1) mediates the uptake of dietary di-/tripeptides in vertebrates. However, in teleost fish gut, more than one PepT1-type transporter might operate, because of teleost-specific whole gen(om)e duplication event(s) that occurred during evolution. Here, we describe a novel teleost di-/tripeptide transporter, i.e., the Atlantic salmon (Salmo salar) peptide transporter 1a [PepT1a; or solute carrier family 15 member 1a (Slc15a1a)], which is a paralog (77% similarity and 64% identity at the amino acid level) of the well-described Atlantic salmon peptide transporter 1b [PepT1b, alias PepT1; or solute carrier family 15 member 1b (Slc15a1b)]. Comparative analysis and evolutionary relationships of gene/protein sequences were conducted after ad hoc database mining. Tissue mRNA expression analysis was performed by quantitative real-time PCR, whereas transport function analysis was accomplished by heterologous expression in Xenopus laevis oocytes and two-electrode voltage-clamp measurements. Atlantic salmon pept1a is highly expressed in the proximal intestine (pyloric ceca ≈ anterior midgut > midgut >> posterior midgut), in the same gut regions as pept1b but notably ~5-fold less abundant. Like PepT1b, Atlantic salmon PepT1a is a low-affinity/high-capacity system. Functional analysis showed electrogenic, Na+-independent/pH-dependent transport and apparent substrate affinity (K0.5) values for Gly-Gln of 1.593 mmol/L at pH 7.6 and 0.076 mmol/L at pH 6.5. In summary, we show that a piscine PepT1a-type transporter is functional. Defining the role of Atlantic salmon PepT1a in the gut will help to understand the evolutionary and functional relationships among peptide transporters. Its functional characterization will contribute to elucidate the relevance of peptide transporters in Atlantic salmon nutritional physiology.


Assuntos
Dipeptídeos/metabolismo , Proteínas de Peixes/metabolismo , Absorção Intestinal , Transportador 1 de Peptídeos/metabolismo , Salmo salar/metabolismo , Animais , Evolução Molecular , Proteínas de Peixes/química , Proteínas de Peixes/genética , Regulação da Expressão Gênica , Concentração de Íons de Hidrogênio , Cinética , Transportador 1 de Peptídeos/química , Transportador 1 de Peptídeos/genética , Filogenia , Salmo salar/genética , Xenopus laevis
11.
Front Oncol ; 9: 110, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30895166

RESUMO

Pediatric nasopharyngeal carcinoma is a rare malignancy strongly associated with Epstein-Barr virus infection. Patients typically present with non-specific symptoms of epistaxis or serous otitis from eustachian tube obstruction and therefore diagnosis is often delayed. We present a case of a previously healthy 17 year old female who initially complained of migraines which was resistant to oral medication. Symptoms progressed and she saw a dental surgeon for concern of a dental infection and was prescribed antibiotics with no relief. Her symptoms continued to progress until an otolaryngologist visualized a large mass along the floor of the left nasal cavity. Subsequent imaging showed a large mass in the posterior left nasal cavity and biopsy was consistent with nasopharyngeal carcinoma.

12.
Early Interv Psychiatry ; 13(4): 1011-1017, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-30672134

RESUMO

AIM: To report on the development of an early intervention service in Modena, Italy, with information relevant to the first 4 years of implementation. METHODS: The 2-year service was offered to people aged 18-35 with psychotic manifestations, within 2 years from psychosis onset/or naïve to antipsychotics, by teams placed within community mental health Centres, according to a "specialist within generalist" model. Treatment included pharmacological consultation, psychoeducation and social inclusion programs. Health of the Nation Outcome Scale was administered at baseline and every 6 months. RESULTS: One hundred cases accepted the treatment from 1 March 2013 to 31 December 2016. Of these, 71% were male with a median age of 23. Ninety percent were diagnosed with non-affective psychosis, yielding an estimated treated incidence of 19.1/105 . General practitioners (GPs)represented the most frequent referrers to the program (38%), followed by referrals from acute general and psychiatric hospital units (22%) and self-referrals (14%). Meaningful clinical improvement was observed, 6 months after enrolment. CONCLUSIONS: An early intervention service for psychosis was successfully implemented within existing community outpatient services. GPs represented the main referrals, providing some validation of the "specialist within generalist" model of care. A promising clinical improvement and trend of reduction in duration of untreated psychosis was found, supporting the variety of early detection efforts in the community. The high median age and lack of information about pathways to care underline possible barriers to access for younger patients. These findings will inform refinement of treatments and service models for the Region.


Assuntos
Intervenção Médica Precoce , Transtornos Psicóticos/terapia , Adulto , Assistência Ambulatorial/organização & administração , Terapia Combinada , Centros Comunitários de Saúde Mental/organização & administração , Diagnóstico Precoce , Feminino , Implementação de Plano de Saúde/organização & administração , Humanos , Itália , Masculino , Pessoa de Meia-Idade , Transtornos Psicóticos/diagnóstico , Transtornos Psicóticos/psicologia , Encaminhamento e Consulta/organização & administração , Adulto Jovem
13.
Genes Nutr ; 14: 33, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31890051

RESUMO

BACKGROUND: Peptide transporter 1 (PepT1, alias Slc15a1) mediates the uptake of dietary di/tripeptides in all vertebrates. However, in teleost fish, more than one PepT1-type transporter might function, due to specific whole genome duplication event(s) that occurred during their evolution leading to a more complex paralogue gene repertoire than in higher vertebrates (tetrapods). RESULTS: Here, we describe a novel di/tripeptide transporter in the zebrafish (Danio rerio), i.e., the zebrafish peptide transporter 1a (PepT1a; also known as Solute carrier family 15 member a1, Slc15a1a), which is a paralogue (78% similarity, 62% identity at the amino acid level) of the previously described zebrafish peptide transporter 1b (PepT1b, alias PepT1; also known as Solute carrier family 15 member 1b, Slc15a1b). Also, we report a basic analysis of the pept1a (slc15a1a) mRNA expression levels in zebrafish adult tissues/organs and embryonic/early larval developmental stages. As assessed by expression in Xenopus laevis oocytes and two-electrode voltage clamp measurements, zebrafish PepT1a, as PepT1b, is electrogenic, Na+-independent, and pH-dependent and functions as a low-affinity system, with K 0.5 values for Gly-Gln at - 60 mV of 6.92 mmol/L at pH 7.6 and 0.24 mmol/L at pH 6.5 and at - 120 mV of 3.61 mmol/L at pH 7.6 and 0.45 mmol/L at pH 6.5. Zebrafish pept1a mRNA is highly expressed in the intestine and ovary of the adult fish, while its expression in early development undergoes a complex trend over time, with pept1a mRNA being detected 1 and 2 days post-fertilization (dpf), possibly due to its occurrence in the RNA maternal pool, decreasing at 3 dpf (~ 0.5-fold) and increasing above the 1-2 dpf levels at 4 to 7 dpf, with a peak (~ 7-fold) at 6 dpf. CONCLUSIONS: We show that the zebrafish PepT1a-type transporter is functional and co-expressed with pept1b (slc15a1b) in the adult fish intestine. Its expression is also confirmed during the early phases of development when the yolk syncytial layer is present and yolk protein resorption processes are active. While completing the missing information on PepT1-type transporters function in the zebrafish, these results open to future investigations on the similar/differential role(s) of PepT1a/PepT1b in zebrafish and teleost fish physiology.

14.
Int J Ment Health Nurs ; 27(3): 1002-1008, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29197134

RESUMO

Despite the call by the scientific community for a systematic monitoring of physical health in people with psychiatric illnesses, national and international audits have reported poor quality of cardiovascular risk assessments and management in this vulnerable population. Available evidence indicates that in people affected by mental illness, life expectancy is reduced by 10-20 years, mainly due to cardiovascular accidents and metabolic syndrome (MetS)-related diseases. The primary aim of the present study was to evaluate the accuracy of cardiovascular risk monitoring in an outpatient sample of patients taking second-generation antipsychotics. The sample consisted of 200 patients consecutively recruited from two community mental health centres. A clinical chart review was performed on the following laboratory tests: total cholesterol, high- and low-density lipoprotein, serum triglycerides, fasting blood glucose, γ-glutamyl transpeptidase. Blood pressure and waist circumference were measured. A complete cardiovascular risk assessment was available only in 60 patients out of 200 (33.3%). The only variable associated with laboratory tests for MetS was receiving three or more psychotropic medications, which increased fourfold the probability of metabolic screening. In the subsample of patients with full screening, the prevalence of MetS was 33.3%. Our findings suggest that mental health professionals working in community mental health services should incorporate a more systematic assessment of physical health in their practice, and intervene proactively to reduce the significant cardiovascular burden carried by people with several mental illness.


Assuntos
Antipsicóticos/uso terapêutico , Doenças Cardiovasculares/etiologia , Transtornos Mentais/complicações , Medição de Risco , Antipsicóticos/efeitos adversos , Glicemia/análise , Pressão Sanguínea , Colesterol/sangue , Feminino , Humanos , Itália , Lipoproteínas HDL/sangue , Lipoproteínas LDL/sangue , Masculino , Transtornos Mentais/tratamento farmacológico , Síndrome Metabólica/etiologia , Pessoa de Meia-Idade , Pacientes Ambulatoriais , Triglicerídeos/sangue , Circunferência da Cintura , gama-Glutamiltransferase/sangue
15.
Fish Shellfish Immunol ; 71: 136-143, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28986218

RESUMO

Allograft inflammatory factor 1 (AIF-1) is a highly conserved gene involved in inflammation, cloned and characterized in several evolutionary distant animal species. Here, we report the molecular identification, characterization and expression of AIF-1 from the common sea urchin Paracentrotus lividus. In this species, AIF-1 encodes a predicted 151 amino acid protein with high similarity to vertebrate AIF-1 proteins. Immunocytochemical analyses on coelomocytes reveal localization of the AIF-1 protein in amoebocytes (perinuclear cytoplasmic zone) and red sphaerulocytes (inside granules), but not in vibratile cells and colorless sphaerula cells. The significant increase of AIF-1 expression (mRNA and protein) found in the coelomocytes of the sea urchin after Gram + bacterial challenge suggests the involvement of AIF-1 in the inflammatory response. Our analysis on P. lividus AIF-1 contributes to elucidate AIF-1 function along the evolutionary scale and consolidate the key evolutionary position of echinoderms throughout metazoans with respect to the common immune paths.


Assuntos
Proteínas de Ligação ao Cálcio/genética , Proteínas de Ligação ao Cálcio/imunologia , Regulação da Expressão Gênica/imunologia , Imunidade Inata/genética , Paracentrotus/genética , Paracentrotus/imunologia , Sequência de Aminoácidos , Animais , Sequência de Bases , Proteínas de Ligação ao Cálcio/química , Perfilação da Expressão Gênica , Filogenia , Alinhamento de Sequência
16.
J Endourol ; 25(7): 1137-41, 2011 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-21682597

RESUMO

PURPOSE: To compare the safety and efficacy of emergency vs scheduled ureteroscopy with a prospective study that included patients who presented to the emergency department (ED) with renal colic from ureteral stones. PATIENTS AND METHODS: There were 271 consecutive patients who were enrolled in this prospective study. Patients were randomized to emergency ureteroscopy (group A) or delayed ureteroscopy (group B). All patients underwent helical unenhanced CT (HUCT). Stone-free status was defined as the complete absence of residual fragments at 1 week postoperatively, assessed with HUCT, with no need for ancillary interventions after ureteroscopy. RESULTS: Group A included 139 assessable patients. The overall stone-free rate was 93%. Neither location nor size was a significant prognostic factor (P>0.05). Single-session ureteroscopy failed to clear nine ureteral stones. A Double-J stent was placed in 27/139 patients. Group B included 100 assessable patients. Patients in the control group were scheduled for ureteroscopy after their departure from the ED. The overall stone-free rate was 90%. Single-session ureteroscopy failed to clear 10 ureteral stones. A Double-J stent was placed in 80/100 patients. There were no statistical differences with regard to stone diameter and location, complications, and stone-free rate between group A and group B patients. The rate of Double-J stent positioning was significantly higher (P<0.05) in group B patients. CONCLUSIONS: In our experience, emergency ureteroscopy showed equal efficacy and safety compared with the elective procedure. It has the main advantage of providing both immediate relief from pain and stone fragmentation.


Assuntos
Serviço Hospitalar de Emergência , Testes de Função Renal , Cálculos Ureterais/fisiopatologia , Cálculos Ureterais/cirurgia , Ureteroscopia/métodos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Adulto Jovem
17.
Arthritis Res Ther ; 11(6): R183, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-20003205

RESUMO

INTRODUCTION: Comparison of intra-articular bacterial-derived hyaluronic acid (Hyalubrix) (HA) with local analgesia (mepivacaine) for osteoarthritis (OA) of the hip. METHODS: A pilot prospective, double-blind, 6-month randomized trial of 42 patients with hip OA. HA or mepivacaine was administered twice (once a month) under ultrasound guidance. Efficacy measurements included the Lequesne's algofunctional index, a visual analog scale for pain, concomitant use of analgesia, patient and physician global measurement, and safety. RESULTS: Patients in the HA group exhibited a significantly reduced Lequesne's algofunctional index 3 and 6 months after treatment (P < 0.001) and significantly reduced visual analog scale pain scores 3 and 6 months after treatment (P < 0.05) compared with the local anesthetic group. All primary and secondary measures were significantly improved versus baseline, but other than the above were not different from each other at 3 or 6 months. Adverse effects were minimal. CONCLUSIONS: This comparative study suggests a beneficial effect and safety of intra-articular HA in the management of hip OA. TRIAL REGISTRATION NUMBER: ISRCTN39397064.


Assuntos
Anestésicos Locais/administração & dosagem , Ácido Hialurônico/administração & dosagem , Mepivacaína/administração & dosagem , Osteoartrite do Quadril/tratamento farmacológico , Viscossuplementos/administração & dosagem , Adulto , Idoso , Anestésicos Locais/efeitos adversos , Método Duplo-Cego , Feminino , Humanos , Ácido Hialurônico/efeitos adversos , Injeções Intra-Articulares , Masculino , Mepivacaína/efeitos adversos , Pessoa de Meia-Idade , Osteoartrite do Quadril/complicações , Dor/tratamento farmacológico , Dor/etiologia , Medição da Dor , Projetos Piloto , Viscossuplementos/efeitos adversos
18.
Maturitas ; 59(1): 2-6, 2008 Jan 20.
Artigo em Inglês | MEDLINE | ID: mdl-18063490

RESUMO

OBJECTIVES: The aim of the present study was to evaluate the effects of low doses of hormone replacement therapy (HRT) in normal young postmenopausal women. METHODS: In an open trial healthy, non-obese postmenopausal women received for 2 years a low-dose continuous combined HRT (LD-HRT) containing 1mg estradiol+0.5 mg norethisterone acetate each pill for 28 days, or 0.5 mg of 17beta-estradiol and 0.25 mg of norethisterone acetate (Ultra low dose, Ultra-LD-HRT) along with 1000 mg of calcium per day. Control group consisted of women receiving only 1000 mg of calcium per day, for 2 years. Menopausal symptoms were evaluated by the Green climacteric scale for the first 12 weeks of the study while bleeding profiles, bone mineral density (BMD) and bone turnover were assessed for 24 months. RESULTS: LD-HRT and Ultra-LD-HRT were effective in reducing menopausal clinical symptoms. In the control group, BMD significantly (P<0.05) decreased at the spine (-2.8+/-0.2%), and femoral neck (-2.8+/-0.7%). In LD-HRT treated group BMD showed a significant (P<0.05) increase at the spine (5.2+/-0.7%), and femoral neck (2.8+/-0.4%) after 24 months. In the Ultra-LD-HRT treated women spine and femoral neck BMD showed a significant (P<0.05) increase (2.0+/-0.3 and 1.8+/-0.3%, respectively) after 24 months. In these women treated with LD-HRT and Ultra-LD-HRT the BMD values were significantly (P<0.05) different from those measured in calcium-treated women. CONCLUSIONS: LD-HRT and Ultra-LD-HRT can alleviate subjective symptoms providing an effective protection against the postmenopausal decrease of BMD.


Assuntos
Terapia de Reposição de Estrogênios , Osteoporose Pós-Menopausa/prevenção & controle , Densidade Óssea/efeitos dos fármacos , Conservadores da Densidade Óssea/administração & dosagem , Cálcio da Dieta/administração & dosagem , Anticoncepcionais Orais Sintéticos/administração & dosagem , Relação Dose-Resposta a Droga , Estradiol/administração & dosagem , Estrogênios/administração & dosagem , Feminino , Humanos , Pessoa de Meia-Idade , Noretindrona/administração & dosagem , Noretindrona/análogos & derivados , Acetato de Noretindrona , Pós-Menopausa , Resultado do Tratamento
19.
Eur Urol ; 49(1): 120-6, 2006 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-16310927

RESUMO

OBJECTIVE: To demonstrate the safety of the Millin extraperitoneal laparoscopic adenomectomy by comparing the laparoscopic and open approaches. METHODS: From January 2003 to April 2005, patients, with indication of prostatic adenomectomy, were offered the chance to choose between 2 types of procedure: Millin adenomectomy with open or extraperitoneal laparoscopic approach. Forty patients were included in this prospective non-randomised study. The patients were divided into 2 Groups. Group A (20 patients) underwent extraperitoneal laparoscopic adenomectomy, while Group B (20 patients) was treated by open surgery. Pre-operative, peri-operative and post-operative parameters were evaluated. Group A was subdivided in two sub-groups (first ten and last ten) and peri-operative parameters were considered in order to determine the learning curve. RESULTS: In terms of pre-operative parameters considered, the 2 study groups are comparable (p>0.3). As far as peri and post-operative parameters are concerned: mean blood loss for Group A was 411.6+/-419 ml, for Group B 687.5+/-298.6 ml (p=0.004). For all the other parameters no significant statistical differences were recorded (p>0.4). Mean operative time was 107.2+/-34.9 min in Group A, and 95.5+/-22.5 min in Group B. Mean adenoma weight in Group A was: 69,5+/-21.5 g, in Group B: 88.1+/-43.8 g. Mean haemoglobin levels in Group A was: 11.2+/-1.8 g/dl, Group B: 11.6+/-1.2 (10-13.4) g/dl. Mean Analgesic consuming (Tramadol) during the post-operative stay was 385+/-36 mg in Group A, versus 430+/-108 mg in Group B. Mean catheterization time was 6.3+/-3.7 days in Group A, 5.6+/-1.1 days in Group B. The mean hospital stay was 7.8+/-4.1 days in Group A, and 7+/-1.6 days in Group B. One patient (5%) from Group A was re-operated for bleeding and clot retention, whilst in Group B patients did not present complications which required any further intervention. As far as peri-operative and post-operative parameters of the two sub-Groups A (first ten patients and last ten patients) are concerned, the statistical evaluation shows a significant difference only on operative time (p=0.01). The p-value for the other parameters was not significant (p>0.1). CONCLUSIONS: The extraperitoneal laparoscopic adenomectomy is a safe technique presenting results comparable to open surgery with the advantage of significantly lower peri-operative blood loss.


Assuntos
Laparoscopia , Prostatectomia/métodos , Hiperplasia Prostática/cirurgia , Idoso , Humanos , Laparoscopia/métodos , Masculino , Pessoa de Meia-Idade , Peritônio , Estudos Prospectivos
20.
Maturitas ; 50(2): 91-7, 2005 Feb 14.
Artigo em Inglês | MEDLINE | ID: mdl-15653005

RESUMO

Sleep disturbances in peri- and postmenopausal women may result from hormonal changes, vasomotor symptoms, and possibly psychological factors. Hormone replacement therapy (HRT) seems to diminish the disruption of sleep in climacteric women. The aim of this study was to determine the effects of a low dose of conjugated equine estrogens (CE) in combination with different progestins (LD-HRT) and evaluate differences between regimens on sleep in symptomatic postmenopausal women. Postmenopausal women were recruited and assigned to calcium-vitamin (control group) or to LD-HRT with 0.3mg of CE associated with a daily administration at bedtime of a progestin (2.5 mg MPA, CE + MPA, n = 20), or 100 mg natural micronized progesterone (CE + P, n = 20). Subjective symptoms were evaluated by the Greene climacteric scale, and by a visuanalogic graduated scale (0-10) at baseline and after 4, 8, and 12 weeks of study. Greene's scores for the control group were similar to those in LD-HRT group at baseline, and showed no significant modification at all subsequent measurements. Conversely, in LD-HRT group, a significant (P < 0.05) reduction in the scores of all Greene's domains was evident versus corresponding baseline and control group values. Conversely, in LD-HRT group, a significant (P < 0.05) reduction in the scores of all Greene's domains was evident with no difference in the scores of the two treated group. Both CE + MPA and CE + P significantly (P = 0.05) reduced the HF and sleep visuanalogic score in comparison to the control group. The score of sleep was significantly (P = 0.05) lower in the CE + P group in comparison to that measured in the CE + MPA group. No significant correlation between sleep and vasomotor score was found. In conclusion, low estrogen dose may have a value in the treatment of menopausal women in which sleep disturbances may be a symptom of estrogen deprivation. Low-dose estrogen associated with low-dose micronized progesterone may especially benefit women who complain of disturbed sleep.


Assuntos
Terapia de Reposição de Estrogênios , Pós-Menopausa/fisiologia , Transtornos do Sono-Vigília/tratamento farmacológico , Anticoncepcionais Femininos/uso terapêutico , Relação Dose-Resposta a Droga , Estrogênios/uso terapêutico , Estrogênios Conjugados (USP)/uso terapêutico , Feminino , Humanos , Acetato de Medroxiprogesterona/uso terapêutico , Pessoa de Meia-Idade , Progesterona/uso terapêutico , Transtornos do Sono-Vigília/fisiopatologia , Resultado do Tratamento
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