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1.
Osteoporos Int ; 34(11): 1881-1891, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37418151

RESUMO

Realising the benefits of systematic secondary fracture prevention requires supporting local sites to get started and becoming effective. We here describe the development, implementation and impact of a regional fracture liaison service (FLS) mentorship programme in Latin America that led to 64 FLS getting started and coverage of 17,205 patients. INTRODUCTION: Despite treatments and service models to deliver effective secondary fracture prevention, most patients are left untreated after a fragility fracture. To improve the capability to get FLS started and more effective, we describe the development, implementation and evaluation of an international programme to develop national communities of FLS mentors as part of the Capture the Fracture Partnership in Latin America. METHODS: The IOF regional team and the University of Oxford developed the curriculum and associated resources for training mentors in setting up FLS, service improvement and mentorship. Mentors were selected during a preparatory meeting, trained using live online sessions followed by regular mentor-led post-training meetings. The programme was evaluated using a pre-training needs assessment and post-training evaluation based on Moore's outcomes. RESULTS: The mentorship programme was initiated in Mexico, Brazil, Colombia and Argentina. The mentors were multidisciplinary, including orthopaedic surgery, rehabilitation, rheumatology, endocrinology, geriatrics, gynaecology and internal medicine. There was 100% participation in training sessions and reported satisfaction with the training. Since the initiation of the training programme, 22 FLS have been set up in Mexico, 30 in Brazil, 3 in Colombia and 9 in Argentina, in comparison with two in Chile and none in any other LATAM countries that were not involved in the mentorship programme. This equates to approximately 17,025 additional patients identified from 2019 to 2021 after initiation of mentorship. The mentors have engaged with 58 FLS for service development. Post-training activities include two published national best practice guidelines and other country-specific resources for FLS in the local language. CONCLUSION: Despite the COVID pandemic, the mentorship pillar of the Capture the Fracture Partnership has developed a community of FLS mentors with measurable improvement in national FLS provision. The programme is a potentially scalable platform to develop communities of mentors in other countries.


Assuntos
COVID-19 , Fraturas por Osteoporose , Humanos , Fraturas por Osteoporose/prevenção & controle , Mentores , América Latina , México , Prevenção Secundária
2.
Musculoskelet Surg ; 106(1): 15-19, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32399677

RESUMO

PURPOSE: Treatment of acromioclavicular joint (ACJ) dislocation is not encoded uniquely. Type I and II injuries are usually treated conservatively, while types IV, V and VI surgically. Controversy still exists over the treatment of type III injuries. In the operative approach, there is no agreement on the best surgical technique. Our purpose is to compare the mini-open and arthroscopic approach focusing on the evaluation of the anatomical precision of the coracoid drilling. METHODS: This is a controlled laboratory study. Ten fresh-frozen cadaveric shoulders were randomly assigned to the two techniques in order to compare them. We performed essential surgical gestures to drill the tunnel using MINAR® System (mini-open) and Dog-Bone® (ARTHREX, arthroscopic). The anatomical specimens were then subjected to CT-scan investigation. We statistically evaluated the precision of these two techniques analyzing DICOM files using two parameters. Parameter 1 evaluates the tunnel entry area on the superior side of the coracoid. Parameter 2 describes the orientation of the tunnel. RESULTS: There are no statistically significant differences (95% confidence level) between arthroscopic and mini-open approach about the precision in the location of the coracoid hole, regarding the entry area (p = 1.00) and the orientation (p = 0.196). CONCLUSION: The evidences collected enable the orthopedic surgeon to choose equally between the two techniques in the treatment of AC joint dislocation toward precision.


Assuntos
Articulação Acromioclavicular , Luxações Articulares , Luxação do Ombro , Articulação Acromioclavicular/lesões , Articulação Acromioclavicular/cirurgia , Artroscopia/métodos , Cadáver , Humanos , Luxações Articulares/cirurgia , Luxação do Ombro/cirurgia
3.
Sci Rep ; 11(1): 4017, 2021 02 17.
Artigo em Inglês | MEDLINE | ID: mdl-33597633

RESUMO

The paper presents the results of the analysis of the geo-chemo-mechanical data gathered through an innovative multidisciplinary investigation campaign in the Mar Piccolo basin, a heavily polluted marine bay aside the town of Taranto (Southern Italy). The basin is part of an area declared at high environmental risk by the Italian government. The cutting-edge approach to the environmental characterization of the site was promoted by the Special Commissioner for urgent measures of reclamation, environmental improvements and redevelopment of Taranto and involved experts from several research fields, who cooperated to gather a new insight into the origin, distribution, mobility and fate of the contaminants within the basin. The investigation campaign was designed to implement advanced research methodologies and testing strategies. Differently from traditional investigation campaigns, aimed solely at the assessment of the contamination state within sediments lying in the top layers, the new campaign provided an interpretation of the geo-chemo-mechanical properties and state of the sediments forming the deposit at the seafloor. The integrated, multidisciplinary and holistic approach, that considered geotechnical engineering, electrical and electronical engineering, geological, sedimentological, mineralogical, hydraulic engineering, hydrological, chemical, geochemical, biological fields, supported a comprehensive understanding of the influence of the contamination on the hydro-mechanical properties of the sediments, which need to be accounted for in the selection and design of the risk mitigation measures. The findings of the research represent the input ingredients of the conceptual model of the site, premise to model the evolutionary contamination scenarios within the basin, of guidance for the environmental risk management. The study testifies the importance of the cooperative approach among researchers of different fields to fulfil the interpretation of complex polluted eco-systems.

4.
J Biol Regul Homeost Agents ; 34(4 Suppl. 3): 419-429. Congress of the Italian Orthopaedic Research Society, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33261305

RESUMO

Postoperative rehabilitation after simultaneous anterior cruciate ligament reconstruction and opening wedge high tibial osteotomy is a complex concept. Different osteotomy techniques, extremely selected patients, high expectations in returning to previous sport activities, and the different individual physical profile and performances make traditional chronological criteria impractical and unfeasible. This study presents a novel rehabilitation in which functional objective criteria are considered the key factors for standardizing a 4-step protocol. Each step is "individualized", based on the patient's response to the healing processes and to the different training phases, allowing for a safe return to sports competitions. This definitively implies a strict collaboration between patient, surgeon, physician and physiotherapists, as well as thorough and detailed patient education. Due to the high versatility of these new rehabilitation concepts, the application of the "individualized" steps described in this study may be broadened to include different sports medicine knee injuries that may benefit from a specific, detailed and carefully patient-centered rehabilitation project.


Assuntos
Lesões do Ligamento Cruzado Anterior , Reconstrução do Ligamento Cruzado Anterior , Tíbia/cirurgia , Ligamento Cruzado Anterior/cirurgia , Lesões do Ligamento Cruzado Anterior/cirurgia , Humanos , Osteotomia , Resultado do Tratamento
5.
J Biol Regul Homeost Agents ; 34(4 Suppl. 3): 393-404. Congress of the Italian Orthopaedic Research Society, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33261303

RESUMO

The popularity of unicompartmental knee arthroplasty (UKA) continues to grow among orthopaedic surgeons and robotic surgery may be helpful in obtaining a precise placement of the prosthetic components, thanks to the meticulous intra-operative computer study for simulating the prosthetic positioning. This may lead to longer implant survivorship as well as a reduction in intermediate and long-term prosthetic complications, despite the initial greater costs than those of manual UKA. In this preliminary study, from January 2017 and October 2017, 18 patients underwent UKA with MAKO robotic system assistance and 10 patients received UKA with NAVIO robotic system assistance. The two groups were homogeneous by age, BMI, degree of osteoarthritis involvement, and postoperative program. Patients were followed both clinically (Numeric Rating Scale NRS and Knee Injury Osteoarthritis Outcome Scores KOOS) and radiographically. At the end term follow up (2 years), no significant difference was observed for NRS and KOOS as well as for clinical parameters as an active range of motion. A significant discrepancy was detected regarding the duration of the surgery and time of using the robotic system, that appeared to be longer in the NAVIO group than that of MAKO group, likely due to the specific technical aspects that characterize these two different robotic systems. The main finding of this study is that favorable clinical and radiographical results may be obtained using a robotic approach (MAKO or NAVIO) for UKA positioning at a short follow up. Due to the lack of significant clinical differences observed between the two groups of patients at end term follow up, the "concept" of a robotic approach, more than a specific patented system, may be considered the key element for improving UKA technique and it is likely that in the near future the choice of a single specific robotic system will still be a "surgeon's preference". The results of the study add scientific evidence regarding the effective improvement of UKA results using different robotic approaches. They also show possible economic sustainability of this therapeutic strategy related to the optimal patients' performance obtained at short term follow up, suggesting that the robotic assistance may really become a key element for better long-term survivorship of unicompartmental knee arthroplasty.


Assuntos
Artroplastia do Joelho , Prótese do Joelho , Procedimentos Cirúrgicos Robóticos , Seguimentos , Humanos , Articulação do Joelho/diagnóstico por imagem , Articulação do Joelho/cirurgia , Osteoartrite do Joelho/diagnóstico por imagem , Osteoartrite do Joelho/cirurgia , Resultado do Tratamento
6.
Sci Total Environ ; 648: 153-163, 2019 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-30114586

RESUMO

Seafood is recognized as a healthy food choice due to high contents of essential nutrients, including polyunsaturated fatty acids (PUFAs) of the n-3 family. However, seafood is often contaminated by toxic compounds, which have adverse effects on human health. The aim of this study was to provide information about the percentage of edible part, condition index and the benefit and risk for human consumers health associated to the consumption of eight bivalve species (Flexopecten glaber, Mimachlamys varia, Modiolus barbatus, Mytilus galloprovincialis, Ostrea edulis, Ruditapes philippinarum, Solen marginatus and Venus verrucosa) of high commercial value, purchased from Taranto local fish markets. High percentage of edibility and condition index were found in all analysed species. The relatively high protein content, low levels of lipid and high percentage of healthy n-3 PUFAs make M. varia, O. edulis, S. marginatus, M. galloprovincialis, M. barbatus more suitable for benefit to consumers. Provisional tolerable weekly intake and hazard index calculated on the basis of trace metals in edible tissues, indicated specific recommendations for a responsible daily consumption of shellfish. For the most part of studied species, the estimated balance between beneficial and risk for consumers recommend a daily portion (RDP) lesser of 60 g/person/day than M. galloprovincialis, O. edulis and R. philippinarum (≥60 g/person/day). Careful risk-benefit considerations should promote seafood consumption while minimizing exposure to toxic contaminants.


Assuntos
Arsênio/análise , Ácidos Graxos/análise , Contaminação de Alimentos/análise , Metais Pesados/análise , Frutos do Mar , Poluentes Químicos da Água/análise , Animais , Bivalves/química , Composição Corporal , Humanos , Itália , Medição de Risco , Especificidade da Espécie
7.
Exp Toxicol Pathol ; 2017 May 25.
Artigo em Inglês | MEDLINE | ID: mdl-28552628

RESUMO

The aim of the present study is to determine if Ahr ligands as PCB-126, a dioxin-like, might contribute to inhibition of the tumor suppressor p53 by promoting its degradation through proteasome-ubiquitin system (UPS). The findings show, in the presence of PCB-126, a significant increase of p53 immunoreactivity in fish compared to the control. Subsequently, there is a decrease of p53 immunoreactivity at 24h which is maintained even at 72h. At the same time there is a slight decrease of ubiquitin immunoreactivity to 12h compared to the control and a marked decrease to 24 and 72h. The induction of ubiquitin expression is resulted very marked in the control and preserved at 12h. It's very important to underline as in our study we demonstrate a marked decrease of ubiquitin and p53 immunoreactivity at 24h and 72h. AHR activation, by ligands as PCB-126, increases p53 ubiquitation inhibiting its expression, in addition it decreases the free ubiquitin promoting disruption of Ub homeostasis; this is the first report that establishes a relationship between AhR, increases p53 ubiquitation, and reduction of free ubiquitin. Our result emphasize the need to deeply the role of this receptor in UPS regulation as potential therapeutic target for cancer treatment.

8.
Musculoskelet Surg ; 100(3): 187-191, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-27287544

RESUMO

INTRODUCTION: Acromioclavicular joint (ACJ) dislocation is a common injury that can result from sports activities. The surgical technique for the treatment of Type III and Type IV injuries, according to the Rockwood classification, remains controversial. The purpose of the study was to determine the functional outcome after minimally invasive and arthroscopic surgery. The mini-open surgery was done with MINAR® system, whereas the arthroscopic technique was done with Dog BoneTM Button. STUDY DESIGN: Retrospective Cohort study. METHODS: We reviewed 31 who were surgically treated for acute acromioclavicular dislocation Type III and Type IV (2012-2015). We excluded subjects with chronic dislocation or other injury. We selected 16 patients (average age 37).  Half of the sample patients were treated with mini-open surgery with the MINAR® system, and the other half of the patients were treated with the Dog Bone arthroscopic technique. The Constant Shoulder Score, the Oxford Shoulder Score, the Simple Shoulder Test and the Subjective Patient Outcome for Return to Sports (SPORTS) score were used to assess functional outcome of the treated shoulder. RESULTS: Mean follow-up was 13 months (range 6-27 months). The mean Constant Shoulder Score was 91.10 (range 82.76-96.66), Oxford Shoulder Score was 46.19 (range 42.00-48.00), the Simple Shoulder Test was 10.50 (range 9.00-12.00), and the SPORTS score was 7.88 (range 3-10). There is a statistically significant difference between the sample operated with the mini-open surgery and the group operated with arthroscopic technique. The probability of return to their sport, according to the results of the SPORTS score, was significantly higher for patients treated with the MINAR® system (p < 0.001). However, the objective parameter of Constant scale is statistically better in patients operated by arthroscopic technique (p < 0.05; p < 0.001). CONCLUSION: Restoration of ACJ anatomy is the key to a successful therapy. The surgical technique should be personalized. The miny-open surgery and also the arthroscopic surgery are adequate with good clinical results. However, according to the SPORTS score, the patients treated with mini-open surgery returned to their sport with less pain and better performance than those belonging to the other group.


Assuntos
Articulação Acromioclavicular/lesões , Artroscopia , Luxações Articulares/cirurgia , Volta ao Esporte , Adulto , Artroscopia/métodos , Feminino , Seguimentos , Humanos , Luxações Articulares/diagnóstico , Masculino , Pessoa de Meia-Idade , Procedimentos Cirúrgicos Minimamente Invasivos/métodos , Estudos Retrospectivos , Índices de Gravidade do Trauma , Resultado do Tratamento
9.
Ecotoxicol Environ Saf ; 122: 116-25, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26232038

RESUMO

Polycyclic aromatic hydrocarbons (PAHs) can accumulate in the food chain, due to their lipophilic properties. Fish can accumulate contaminants including PAHs and frequent consumption of such contaminated fish can pose risk to human health. The aim of this study was to clarify if acute exposure of sea bream (Sparus aurata, a fish species of great economic importance in the Atlantic and Mediterranean areas) to a PAH, benzo[a]pyrene (B[a]P), at a dose that can induce CYP1A and pathological changes in fish gills, liver and muscle, can induce accumulation in muscle. We investigated the cytotoxic effects (as changes in cell viability, DNA laddering and glutathione content) of in vitro exposure of human peripheral blood mononuclear cells (PBMCs) to organic extracts obtained from muscle of sea breams previously exposed via water to B[a]P (2mg/l, for 12, 24 and 72 h). At this level of exposure, B[a]P caused morphological changes, inflammatory response and CYP1A induction not only in sea bream gills and liver but also in muscle; furthermore, in fish muscle we observed a substantial B[a]P accumulation, which may be associated with the increased CYP1A activity in liver and especially in muscle. However, when PBMCs were exposed to organic extracts obtained from sea bream muscle contaminated with B[a]P, a toxic, although modest effect was revealed, consisting in a significant decrease in cell glutathione levels without alterations in cell viability and DNA laddering. This suggests that consumption of sea breams from B[a]P contaminated waters might represent a risk for human health.


Assuntos
Benzo(a)pireno/toxicidade , Contaminação de Alimentos , Dourada , Poluentes Químicos da Água/toxicidade , Animais , Sobrevivência Celular/efeitos dos fármacos , Citocromo P-450 CYP1A1/metabolismo , Brânquias/efeitos dos fármacos , Brânquias/metabolismo , Glutationa/metabolismo , Humanos , Leucócitos Mononucleares/efeitos dos fármacos , Leucócitos Mononucleares/metabolismo , Fígado/efeitos dos fármacos , Fígado/metabolismo , Músculos/efeitos dos fármacos , Músculos/metabolismo , Medição de Risco
10.
Clin Ter ; 163(4): e157-63, 2012 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-23007818

RESUMO

INTRODUCTION: Pelvic fractures are not frequent, yet severe injuries, often associated to other lesions. Well defined diagnostic and therapeutic procedures are lacking, and their economical assessment is inadequate. The goal of this study is to propose the organization of a multidisciplinary center that can develop diagnosis, treatment, and follow up protocols. MATERIALS AND METHODS: 25 patients were treated from August 2008 to July 2010, 5 women and 20 men, average age 34.5 years. Twenty patients had acetabular fractures (8 posterior wall fractures, 2 anterior column fractures and 10 mixed fractures, Judet and Letournel). Five patients suffered from diastasis symphisis pubis (three patients with a CAP type I, and 2 with a CAP type II, Young-Burgess). RESULTS: Average delay between trauma and operation was 15.6 days. Average hospital stay after surgery was 45 days. Five had excellent results, 15 were good, and 4 presented poor results. One patient deceased. Four patients underwent hip arthroplasty 1 year after surgery. DISCUSSION: It was essential to identify the collaborating units. The center aims at a uniform and rapid treatment for patients with lesions which are treated differently depending on the department of hospitalization and on the surgeon's experience. The target is to avoid treatment delays, costs and complications. The DRG evaluation grants the highest value to pelvis surgery. This should be followed by dedicated structures that can become reference centers. CONCLUSION: The results can be improved, but considering this is not well known context both clinically and economically, they can be seen positively.


Assuntos
Logro , Fraturas Ósseas/cirurgia , Procedimentos Ortopédicos , Ossos Pélvicos/lesões , Ossos Pélvicos/cirurgia , Centros Cirúrgicos/organização & administração , Adolescente , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem
11.
Br J Pharmacol ; 160(5): 1185-94, 2010 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-20590611

RESUMO

BACKGROUND AND PURPOSE: Oestrogen loss at menopause is frequently related to poor wound healing. Genistein has been tested in anti-ageing cosmetic preparations with interesting results on skin health. Here, we investigated the effects of the genistein aglycones, given systemically, in an incisional model of wound healing, compared to systemic oestradiol and raloxifene. EXPERIMENTAL APPROACH: Six months after ovariectomy (OVX), rats were randomly assigned to groups of 12 animals each and treated daily with genistein aglycone (1 and 10 mg kg(-1) s.c.), raloxifene hydrochloride (0.05 and 0.5 mg kg(-1) s.c.) or 17-alpha-ethinyl oestradiol (0.003 and 0.03 mg kg(-1) s.c.) for 12 weeks. Untreated OVX and sham OVX rats were used as controls. Then, 14 or 7 days before the end of the experiment, an incisional wound healing procedure was performed and skin specimens were collected to evaluate molecular, histological and functional measurements. KEY RESULTS: Seven and fourteen days after wounding, samples from OVX rats showed a decrease in transforming growth factor-beta1, tissue transglutaminase 2 and vascular endothelial growth factor compared to samples from sham OVX rats. Oestradiol, raloxifene and genistein all significantly modified this decrease, but the lowest genistein dose exerted a greater effect than the other treatments. Moreover, the lowest dose of genistein was the most effective in improving skin healing and wound tensile strength. CONCLUSIONS AND IMPLICATIONS: Genistein aglycone might be an alternative therapy for the management of skin wound healing.


Assuntos
Etinilestradiol/administração & dosagem , Genisteína/administração & dosagem , Fitoestrógenos/administração & dosagem , Cloridrato de Raloxifeno/administração & dosagem , Pele/efeitos dos fármacos , Cicatrização/efeitos dos fármacos , Animais , Procedimentos Cirúrgicos Dermatológicos , Modelos Animais de Doenças , Relação Dose-Resposta a Droga , Feminino , Proteínas de Ligação ao GTP/metabolismo , Ovariectomia , Proteína 2 Glutamina gama-Glutamiltransferase , Distribuição Aleatória , Ratos , Ratos Sprague-Dawley , Pele/metabolismo , Pele/patologia , Resistência à Tração/efeitos dos fármacos , Fator de Crescimento Transformador beta1/metabolismo , Transglutaminases/metabolismo , Fator A de Crescimento do Endotélio Vascular/metabolismo
12.
Food Chem Toxicol ; 48(8-9): 2458-63, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-20542073

RESUMO

Vitellogenin (Vtg) is a phospho-lipo-glycoprotein produced by oviparous animals in response to estrogen receptor (ER) binding. The presence of Vtg in juvenile and male fish liver and plasma has been used as biomarker to evaluate levels of environmental contaminants as dioxin and PCBs. Interaction of dioxins and PCBs with aryl hydrocarbon receptor (AhR) may affect reproduction by recruitment of estrogen receptor alpha (ERalpha). The aim of this study was to investigate the effects of PCB-126, a co-planar PCB prototypical AhR agonist, and of PCB-153, a non-coplanar PCB lacking dioxine-like activity, on Vtg expression in young fish (Spaurus aurata) after a 12 or 24h exposure to PCBs as well as 48h following PCBs removal. Vtg expression was evaluated by immunohistochemistry and by Western-blot analysis. Our results showed an increased Vtg expression following PCBs administration, with a maximum level after 12h of exposure to either PCB-126, PCB-153 or a mixture of both PCBs. Following this estrogenic activity, an anti-estrogenic activity was detected after 24h of incubation with PCB-126 (alone or mixed with PCB-153), suggested by a decrease in Vtg expression likely through AhR, as a consequence of a hypothetic defence mechanism to endogenous or exogenous ligands.


Assuntos
Disruptores Endócrinos/farmacologia , Antagonistas de Estrogênios/farmacologia , Estrogênios/biossíntese , Bifenilos Policlorados/farmacologia , Dourada/fisiologia , Animais , Western Blotting , Citocromo P-450 CYP1A1/biossíntese , Receptor alfa de Estrogênio/antagonistas & inibidores , Imuno-Histoquímica , Fígado/efeitos dos fármacos , Fígado/metabolismo , Receptores de Hidrocarboneto Arílico/agonistas , Receptores de Hidrocarboneto Arílico/antagonistas & inibidores , Vitelogeninas/biossíntese
14.
Food Chem Toxicol ; 46(11): 3528-33, 2008 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-18834916

RESUMO

Monensin, a well known ionophore antibiotic, may cause severe damage in neuronal cells by altering Na+/K+-ATPase and Ca2+-ATPase. We investigated whether IRFI-042, a synthetic analogue of vitamin E, may block lipid peroxidation in neuronal cells and protect against monensin neurotoxicity in chicks. Monensin toxicity was induced in chicks by once-daily administration (150 mg/kg by oral gavages), for 8 days. Sham animals received a saline solution and were used as controls. All animals were randomized to receive either IRFI-042 (20 mg/kg) or its vehicle. Survival rate, brain lipid peroxidation, mRNA for neuronal and inducible nitric oxide synthases (nNOS and iNOS) and brain histological evaluations, including immunohistochemical expression of nNOS and iNOS were performed. Monensin administration decreased survival rate, induced behavioural changes, increased brain lipid peroxidation, reduced brain nNOS mRNA and immunostaining and enhanced iNOS mRNA and immunostaining in the brain in chicks. IRFI-042 significantly improved the survival rate and counteracted monensin-induced changes in chick brains. Our data suggest that monensin is responsible of neurotoxicity in chicks by inducing oxidative stress/lipid peroxidation and that IRFI-042 might represent a useful pharmacological approach to protect against the neuronal damage induced by this monovalent carboxylic ionophorous polyether antibiotic.


Assuntos
Benzofuranos/farmacologia , Encefalopatias/induzido quimicamente , Encefalopatias/prevenção & controle , Encéfalo/efeitos dos fármacos , Peroxidação de Lipídeos/efeitos dos fármacos , Monensin/antagonistas & inibidores , Animais , Encéfalo/enzimologia , Encéfalo/metabolismo , Encéfalo/patologia , Encefalopatias/mortalidade , Galinhas , Imuno-Histoquímica , Masculino , Monensin/toxicidade , Óxido Nítrico Sintase/metabolismo , Óxido Nítrico Sintase Tipo II/metabolismo , RNA/biossíntese , RNA/isolamento & purificação , Distribuição Aleatória , Taxa de Sobrevida
15.
Bone Marrow Transplant ; 41 Suppl 2: S65-70, 2008 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-18545247

RESUMO

GvHD remains a source of significant morbidity and mortality in the setting of allogeneic haematopoietic SCT. Improving outcomes in stem cell transplant recipients requires additional therapeutic modalities for GvHD, especially for patients who fail to respond to initial therapy with steroids. Moreover, while the absence of acute GvHD (aGvHD) is associated with a higher risk of relapse of the underlying malignant disease, severe aGvHD usually induces the occurrence of life-threatening complications such as severe infections. This article summarizes the current state of aGvHD prophylaxis and treatment.


Assuntos
Doença Enxerto-Hospedeiro/tratamento farmacológico , Doença Enxerto-Hospedeiro/prevenção & controle , Imunossupressores/uso terapêutico , Criança , Doença Enxerto-Hospedeiro/classificação , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Humanos , Esteroides/uso terapêutico , Linfócitos T Reguladores , Tacrolimo/uso terapêutico , Transplante Homólogo , Fator de Necrose Tumoral alfa/antagonistas & inibidores
16.
Respir Care Clin N Am ; 11(2): 247-63, 2005 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-15936692

RESUMO

Differences between assist-control pressure and volume ventilation are minimal provided that peak inspiratory flow delivered at early inspiration matches patient demand Ventilation at constant flow and controlled tidal volume allow instantaneous analysis of the patient-ventilator interactions and the mechanical properties of the respiratory system. The cycle-per-cycle variability of peak inspiratory flow, which is permitted in pressure-limited modes, may allow better patient comfort. We do not know if one mode (pressure controlled or volume controlled) is superior to the other in terms of outcomes.


Assuntos
Ventilação Pulmonar/fisiologia , Respiração Artificial/instrumentação , Gasometria , Desenho de Equipamento , Humanos , Mecânica Respiratória/fisiologia , Volume de Ventilação Pulmonar
17.
Environ Monit Assess ; 96(1-3): 191-202, 2004.
Artigo em Inglês | MEDLINE | ID: mdl-15327158

RESUMO

At present, there are no specific studies on the evaluation of environmental toxicological risks in Calabria (south of Italy) and on the presence of contaminants in the fauna of this region. The aim of the present research was to investigate the levels of contamination by OC pesticides and PCBs in some organs and tissues of wild boars (utilized as 'biological indicator') from various areas of Calabria. Quantitative determinations of organochlorines were carried out using GC-ECD and confirmed with GC-MS in 154 samples from wild boars (heart, liver, lung, kidney, muscle tissue and spleen) during the hunting season from 2000 to 2002. The results indicate the low residual levels of DDE in 8 samples and DDT in 4 samples and PCBs residues (Aroclor 1232) below the detection limits were found. Therefore, these results show that the Calabria region is not at contamination risk from organochlorines and moreover is free from health problems for the consumer of boar meat.


Assuntos
Monitoramento Ambiental/métodos , Poluentes Ambientais/análise , Inseticidas/análise , Bifenilos Policlorados/análise , Animais , Poluentes Ambientais/farmacocinética , Cromatografia Gasosa-Espectrometria de Massas , Humanos , Inseticidas/farmacocinética , Itália , Masculino , Bifenilos Policlorados/farmacocinética , Sensibilidade e Especificidade , Sus scrofa , Distribuição Tecidual
18.
Environ Int ; 30(1): 1-6, 2004 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-14664858

RESUMO

The aim of this research was to evaluate the possible contamination by heavy metals of milk from cows bred on various farms in Calabria. The concentrations of heavy metals were determined in 40 samples of bovine milk from the various dairy farms. Each sample, homogenized and powdered, was mineralized in a microwave oven. Quantitative analyses of Cd, Cr, Cu, Pb and Se were performed using an atomic absorption spectrophotometer with graphite furnace; As was analyzed by hot vapor generation technique and Zn with the flame method. As regards toxic heavy metals, highest values are those of As (g.m. 37.90 microg/kg w.w.) and Pb (g.m. 1.32 microg/kg w.w.), while lowest concentrations are those of Cd (g.m. 0.02 microg/kg w.w). With regard to essential metals, Zn (g.m. 2016 microg/kg w.w) and Se (g.m. 13.24 microg/kg w.w.) showed the highest concentrations, followed by Cr (g.m. 2.03 microg/kg w.w.) and Cu (g.m. 1.98 microg/kg w.w.). Further investigations of the levels of heavy metals (As) in a greater number of milk samples from various zones of Calabria are necessary, both to examine this problem from the clinical epidemiological point of view and to identify the possible causes of milk contamination.


Assuntos
Monitoramento Ambiental , Poluentes Ambientais/isolamento & purificação , Contaminação de Alimentos , Metais Pesados/isolamento & purificação , Leite/química , Animais , Bovinos , Itália , Leite/normas
19.
Minerva Anestesiol ; 68(6): 537-47, 2002 Jun.
Artigo em Italiano | MEDLINE | ID: mdl-12105410

RESUMO

BACKGROUND: The "bone cement implantation syndrome" is a rare but severe complication observed especially during the insertion of cemented prostheses in hip and knee replacement surgery. Several mechanisms are involved: effects of methylmethacrilate, embolism of fat, air and bone marrow, and release of tissue thromboplastin during acetabular and femoral reaming. Aim of this study was to detect embolic events, right heart impairment, hemodynamic and respiratory changes during hip and knee replacement surgery. DESIGN: Prospective study, between February-May 2001. ENVIRONMENT: Orthopedic Operative room. PATIENTS: Twenty-one patients who underwent total hip or knee arthroplasty under general anesthesia. Patients were divided in methylmethacrylate cemented prostheses groups (CEM, n=10) and totally uncemented prostheses (NON CEM, n=11). DATA COLLECTION: Standard anesthesia monitoring and omniplane TEE were performed. TEE probe was positioned in order to obtain "inflow-outflow" views of right heart. Measurements were obtained after anesthesia induction (T1), during femoral realing (T2) at prostheses insertion (T3), and at the end of surgery (T4). RESULTS: Hemodynamic and respiratory parameters measured in different phases of surgical procedures were not different within groups and between groups. Fourtheen patients had TEE evidence of emboli, and the phenomenon was more evident in CEM group (Z= -347; p<0.001). During prostheses insertion, a slight, not significant increase in right ventricular dimensions was observed in both groups, without any right ventricular wall kinetic abnormality. No difference was observed between groups. No adverse cardiac or cerebrovascular events in intra- and postoperatory period were observed. CONCLUSIONS: In normal patients total hip or knee arthroplasty is associated with embolic phenomena, without any significant change in systemic and right heart hemodynamics. Insertion of cemented prostheses does not modify hemodynamic profile. It remains to be elucidated if the occurrence of emboli has a critical role in patients with cardiorespiratory disease.


Assuntos
Artroplastia de Quadril , Artroplastia do Joelho , Cimentos Ósseos/efeitos adversos , Hemodinâmica/fisiologia , Monitorização Intraoperatória , Mecânica Respiratória/fisiologia , Idoso , Ecocardiografia , Feminino , Humanos , Masculino , Metilmetacrilato/efeitos adversos , Pessoa de Meia-Idade , Estudos Prospectivos
20.
Am J Hum Biol ; 14(3): 289-99, 2002.
Artigo em Inglês | MEDLINE | ID: mdl-12001085

RESUMO

The distribution of 13 genetic markers (AB0, Rh, ACP, ADA, AK, ESD, GLO, PGD, PGMl, SOD, GC, TF, and PI) were studied in a sample from the Alia population of Sicily, Italy. A total of 34 alleles were detected. In comparison with other Sicilian populations, Alia always appeared genetically distinctive, either in terms of overall genetic diversity or for the number of unique alleles present. The results are consistent with previous studies that show no genetic uniformity within the island. More specifically, the data support the genetic divergence of the eastern and western halves of the island and highlight genetic boundaries that run through Sicily and divide it into three distinct areas.


Assuntos
Genética Populacional , Alelos , Frequência do Gene , Marcadores Genéticos , Humanos , Polimorfismo Genético , Sicília
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