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Vala J, Pereira C, Costa‐Lopes R. Is the attribution of cultural differences to minorities an expression of racial prejudice? INTERNATIONAL JOURNAL OF PSYCHOLOGY 2009; 44:20-8. [DOI: 10.1080/00207590802057837] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Valero A, Pereira C, Loureiro C, Martínez-Cócera C, Murio C, Rico P, Palomino R, Dávila I. Interrelationship between skin sensitization, rhinitis, and asthma in patients with allergic rhinitis: a study of Spain and Portugal. J Investig Allergol Clin Immunol 2009; 19:167-172. [PMID: 19610258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
Abstract
OBJECTIVE Allergic rhinitis can determine the presence and type of asthma. The main aim of this study was to evaluate the link between allergic rhinitis, asthma, and skin test sensitization in patients with allergic rhinitis. METHODS Patients with allergic rhinitis, aged 10 to 50 years, were consecutively enrolled at different allergy centers in Spain and Portugal. All the patients underwent skin prick tests with a panel of 20 biologically standardized aeroallergens. Allergic rhinitis was classified according to etiology and the Allergic Rhinitis and its Impact on Asthma guidelines and asthma was classified according to the Global Initiative for Asthma guidelines. RESULTS A total of 3225 patients, with a mean age of 27 years, were evaluated. House dust mites and grass and olive tree pollens were the most common aeroallergens. The mean (SD) number of positive skin tests per patient was 6.5 (4), the mean wheal size was 42.3 (28) mm2, and the mean atopy index was 6.5 (2). Forty-nine percent of the patients had concomitant asthma. Asthma severity was associated with a longer time since onset (P < .04) and allergic rhinitis severity (P < .001). Patients with concomitant asthma had a significantly higher number of aeroallergens and sensitization intensity than those without asthma (P < .001). CONCLUSIONS In this broad population sample, the presence and type of asthma was influenced by skin sensitization and both time since onset and severity of allergic rhinitis.
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Loureiro G, Tavares B, Pereira C, Lundberg M, Chieira C. Occupational allergy to fungal lipase in the pharmaceutical industry. J Investig Allergol Clin Immunol 2009; 19:242-244. [PMID: 19610273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
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Machado D, Tavares B, Loureiro G, Conde B, Cemlyn-Jones J, Calado G, Sousa N, Chieira C, Pereira C. Body mass index and airway hyper-responsiveness in individuals without respiratory disease. Eur Ann Allergy Clin Immunol 2008; 40:130-137. [PMID: 19227648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
BACKGROUND Overweight and obesity are major health issues in Western societies. They are related with a higher risk of different co-morbidities but their relationship with airway hyperresponsiveness (AHR) is still under discussion. Nevertheless, they are related to higher severity in asthma and other respiratory diseases. The aim of the study was to analyze the AHR in individuals with normal lung function without respiratory disorders, according to body mass index (BMI) calculation. METHODS We performed clinical observation and basal lung function tests (LFT) in 595 consecutive individuals in order to exclude respiratory disease. 377 individuals fulfilled the criteria of normal values according international guidelines. They were submitted to standardized treadmill exercise test followed by bronchodilator test. FVC, FEV1, FEF 25/75, RV and Raw were obtained at different conditions according to BMI groups (I: lean; II: normal; III: overweight; IV obese). RESULTS 55.2% of the sample was overweight or obese, and a signficant relationship was found with female gender and older ages (p=0.0046 and p<0.0001 respectively). The positive response to exercise test or bronchodilator beta2 agonists was not significantly frequent compared with the other groups. In obese individuals the exercise markedly reduced basal Raw and increased FEF 25/75. Lean individuals showed higher basal values of RV that was reduced upon exercise. Response to 12 agonists showed no differences according to weight biotypes. CONCLUSION BMI hampers lung function in normal individuals, and seems not to be related to AHR. Regular exercise should be encouraged in overweight and obese individuals, since it increases their bronchial permeability as shown in lower frequency of positive exercise tests. The same is advisable for lean individuals for different reasons. Their increased basal RV and Raw improve upon exercise. Despite overweight and obesity are being related to a low-grade of basal systemic inflammation, there was no association with a higher basal bronchial hyperresponsiveness in these individuals.
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Araújo A, Parente B, Sotto-Mayor R, Teixeira E, Almodôvar T, Barata F, Queiroga H, Pereira C, Pereira H, Negreiro F, Silva C. An economic analysis of erlotinib, docetaxel, pemetrexed and best supportive care as second or third line treatment of non-small cell lung cancer. REVISTA PORTUGUESA DE PNEUMOLOGIA 2008; 14:803-827. [PMID: 19023496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
Abstract
AIM Evaluate costs and benefits of erlotinib as 2nd or 3rd line treatment of advanced or metastatic nonsmall cell lung cancer (NSCLC) versus docetaxel, pemetrexed and best supportive care. MATERIALS AND METHODS Cost-minimisation and cost-utility analysis were performed. Time horizon of two years. Portuguese National Health System (NHS) perspective was applied. Survival and time to progression were obtained from three clinical trials. Base-case analysis: 2nd or 3rd line patients with advanced or metastatic NSCLC. Quality Adjusted Life Years (QALYs) were obtained from a UK study. Resource consumption was estimated by a Portuguese panel of experts. Costs were calculated according to official Portuguese databases (updated to 2008). Only direct health costs were applied. Annual discount rate: 5%. Sensitivity analysis included different subpopulations, a three year time horizon and a probabilistic analysis. RESULTS The cost per patient was lower with erlotinib (26,478 euro) than docetaxel (29,262 euro) or pemetrexed (32,762 euro) and higher than best supportive care (16,112 euro). QALYs per patient were higher with erlotinib (0.250) than docetaxel (0.225), pemetrexed (0.241) or best supportive care (0.186). Erlotinib was dominant in the cost-utility analysis, with a lower cost and a higher efficacy than docetaxel and pemetrexed. The sensitivity analysis confirmed the robustness of the base-case analysis results. CONCLUSIONS The use of erlotinib instead of docetaxel or pemetrexed could contribute to annual savings for the NHS (substitution rates: 5%-65%) ranging from 135,046 euro-1,755,602 euro (docetaxel replacement) and 291,801 euro-3,793,409 euro (pemetrexed replacement), with a gain in terms of QALYs.
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Araújo A, Parente B, Sotto-Mayor R, Teixeira E, Almodôvar T, Barata F, Queiroga H, Pereira C, Pereira H, Negreiro F, Silva C. Avaliação económica do erlotinib, docetaxel, pemetrexedo e tratamento de suporte no tratamento de segunda ou terceira linhas de doentes com cancro do pulmão de não pequenas células. REVISTA PORTUGUESA DE PNEUMOLOGIA 2008. [DOI: 10.1016/s0873-2159(15)30288-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Bettencourt A, Pereira C, Carvalho L, Carvalho C, Patto JV, Bastos M, Silva AM, Barros R, Vasconcelos C, Paiva P, Costa L, Costa PP, Mendonça D, Correia J, Silva BM. New insights of HLA class I association to Behçet's disease in Portuguese patients. ACTA ACUST UNITED AC 2008; 72:379-82. [PMID: 18627572 DOI: 10.1111/j.1399-0039.2008.01087.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Human leukocyte antigen (HLA)-B*51 is a well-known genetic factor associated with Behçet's disease (BD). To analyse the influence of HLA-B*51 and other HLA class I alleles in BD susceptibility in a Portuguese population and its association with disease severity, we studied 78 BD patients and 208 healthy controls. The patients were classified into two severity groups as described by Gul et al. As expected, a higher frequency of HLA-B*51 was found. The frequency of HLA-Cw*16 alleles was significantly higher in patients. Regarding severity, HLA-B*27 frequency was higher in the severe group compared with controls and with the mild group. Thus, HLA-B*51 and HLA-Cw*16 seem to confer susceptibility to BD in this patients. HLA-B*27 may be important as a prognostic factor.
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Pereira C, Silva R, Saraiva L, Johansson B, Sousa M, Côrte-Real M. Mitochondria-dependent apoptosis in yeast. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2008; 1783:1286-302. [DOI: 10.1016/j.bbamcr.2008.03.010] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2007] [Revised: 03/05/2008] [Accepted: 03/13/2008] [Indexed: 12/18/2022]
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Jeschke M, Sandmann G, Pereira C, Herndon DN. 043
The Structure and Composition of Liposomes can Affect Skin Regeneration, Morphology, and Growth Factor Expression in Acute Wounds. Wound Repair Regen 2008. [DOI: 10.1111/j.1067-1927.2005.130215aq.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Pereira C, Herndon D, Jeschke M. 024
NonViral Gene Transfer of Keratinocyte Growth Factor in a Murine Wound. Wound Repair Regen 2008. [DOI: 10.1111/j.1067-1927.2005.130215x.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Shaaban H, Pereira C, Williams R, Lees VC. The effect of elbow position on the range of supination and pronation of the forearm. J Hand Surg Eur Vol 2008; 33:3-8. [PMID: 18332013 DOI: 10.1177/1753193407087862] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A kinematic study was performed to examine the influence of elbow position on the range of supination and pronation of the forearm. The ranges of supination and pronation were measured in 50 volunteers (25 men and 25 women) using a custom-designed jig which constrained unwanted and confounding movements of the limb. Measurements were taken with the elbow in full extension, 45 degrees flexion, 90 degrees flexion and full flexion. The data showed a reciprocal relationship between the range of supination and the range of pronation of the forearm which depended on the degree of elbow flexion. As the elbow is flexed, the maximum angle of supination increases while the maximum angle of pronation decreases (p<0.001). The converse is true as the elbow is extended (p<0.001).
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Clarke E, Pereira C, Chaney R, Woodside S, Eaves AC, Damen J. Toxicity testing using hematopoietic stem cell assays. Regen Med 2008; 2:947-56. [PMID: 18034632 DOI: 10.2217/17460751.2.6.947] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
For over 40 years, in vitro assays have been used to understand the complex system of hematopoiesis. Now, several of these assays are undergoing resurgence as scientists in academia and industry are discovering how these assays can be utilized in drug discovery and development. These assays use primary cells from various hematopoietic tissues in multiple species to provide high content information. While conditions in the human body cannot be completely reproduced in vitro, hematopoietic colony-forming cell assays are proving to be a clinically relevant tool to evaluate potential toxic effects of new compounds. The ability to use these assays as a replacement of, or in conjunction with, high-throughput screening assays and high priced in vivo assays can improve the success of the decision-making process, saving time and costs during drug development.
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Pereira C, Cumbi A, Malalane R, Vaz F, McCord C, Bacci A, Bergström S. Meeting the need for emergency obstetric care in Mozambique: work performance and histories of medical doctors and assistant medical officers trained for surgery. BJOG 2007; 114:1530-3. [PMID: 17877775 DOI: 10.1111/j.1471-0528.2007.01489.x] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Nonphysicians in Mozambique have been performing major surgery for more than 20 years, with documented outcomes equivalent to those of specialists. The purpose of this study was to make an inventory of all government hospitals so as to document obstetric surgery performed by 'técnicos de cirurgia' (TCs) and to elucidate their retention at district level. DESIGN Cross-sectional study of surgical procedures during 2002; longitudinal study of TCs and doctors graduating in 1987, 1988 and 1996. SETTING All 34 hospitals with an operating theatre in Mozambique. POPULATION Records of 12,178 major surgical obstetric operations were examined, and 59 medical officers and 34 TCs were interviewed. METHODS Analysis of all surgical registers during 2002 in all government rural, provincial, general and central hospitals in Mozambique. TCs and doctors who had graduated in the specified years were traced and interviewed; health ministry records were reviewed to confirm assignments. MAIN OUTCOME MEASURES Proportion of major obstetric surgeries performed by TCs. Proportion of TCs and medical doctors still at rural/district level at 7 years after graduation. RESULTS Major obstetric surgery is conducted by nonphysicians in 57% of the 12,178 operations scrutinised. In district hospitals, they conducted 92% of 3246 operations. Retention of TCs and medical doctors at district hospital level differed markedly: after 7 years, 88% of the TCs remained in post compared with none of the medical doctors. CONCLUSION Nonphysicians, trained in surgery, do most of the emergency obstetric surgery in Mozambique, and almost all of that performed in district hospitals. Nonphysicians, compared with physicians, stay longer in rural areas. After 7 years, around 90% of nonphysicians are still working in district hospitals, while almost no physicians remain there.
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Kruk ME, Pereira C, Vaz F, Bergström S, Galea S. Economic evaluation of surgically trained assistant medical officers in performing major obstetric surgery in Mozambique. BJOG 2007; 114:1253-60. [PMID: 17877677 DOI: 10.1111/j.1471-0528.2007.01443.x] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To compare the training and deployment costs and surgical productivity of surgically trained assistant medical officers (técnicos de cirurgia) and specialist physicians (surgeons and obstetrician/gynaecologists) in Mozambique in order to inform health human resource planning in a developing country with low availability of obstetric care and severe physician shortages. Técnicos de cirurgia have been previously shown to have quality of care outcomes comparable to physicians. DESIGN Economic evaluation of costs and productivity of surgically trained assistant medical officers and specialist physicians. SETTING Hospitals and health science training institutions in Mozambique. POPULATION Surgically trained assistants, medical officers, surgeons and obstetrician/gynaecologists in Mozambique. METHODS The costs of training and deploying the two cadres of health workers were derived from a review of budgets, annual expenditure reports, enrolment registers, and accounting statements from training institutions and interviews with directors and administrators. Productivity estimates were based on a hospital survey of physicians and técnicos de cirurgia. MAIN OUTCOME MEASURES Cost per major obstetric surgical procedure over 30 years in 2006 US dollars. RESULTS The 30-year cost per major obstetric surgery was $38.9 for técnicos de cirurgia and $144.1 for surgeons and obstetrician/gynaecologists. Doubling the salaries of técnicos de cirurgia resulted in a smaller but still substantial difference in cost per surgery between the groups ($60.3 versus $144.1 per procedure). One-way sensitivity analysis to test the impact of varying other inputs did not substantially change the magnitude of the cost advantage of técnicos de cirurgia. CONCLUSION Training more mid-level health workers in surgery can be part of the response to the health worker shortage, which today threatens the achievement of the health Millennium Development Goals in developing countries.
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Sailler L, Pereira C, Bagheri A, Uro-Coste E, Roussel B, Roussel H, Adoue D, Fournie B, Laroche M, Zabraniecki L, Cintas P, Arlet P, Lapeyre-Mestre M, Montastruc JL, Arlet-Suau E. Increased exposure to statins in patients developing chronic muscle diseases: a 2-year retrospective study. Ann Rheum Dis 2007; 67:614-9. [PMID: 17768174 DOI: 10.1136/ard.2007.075523] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE Case reports have suggested that lipid-lowering drugs (LLDs), especially statins, could induce or reveal chronic muscle diseases. We conducted a study to evaluate the association between chronic muscle diseases and prior exposure to LLDs. METHOD This was a retrospective study of chronic primary muscle disease cases newly diagnosed at the Toulouse University Hospitals between January 2003 and December 2004 among patients living in the Midi-Pyrénées area, France. All patients remained symptomatic for more than 1 year after drug withdrawal, or required drugs for inflammatory myopathy. Data on the patient's exposure to LLDs and to other drugs were compared with that of matched controls (5/1) selected through the Midi-Pyrénées Health Insurance System database. RESULTS A total of 37 patients were included in the study. Of those, 21 (56.8%) suffered from dermatomyositis (DM) or polymyositis (PM), 12 (32.4%) from genetic myopathy, and 4 (10.8%) from an unclassified disease. The prevalence of exposure to statins was 40.5% in patients and 20% in controls (odds ratio (OR) 2.73, 95% confidence interval (CI) 1.21-6.14; p<0.01). There was a significant positive interaction between statins and proton pump inhibitors exposure (weighted OR 3.3, 95% CI 1.37-7.54; p = 0.02). Statin exposure rate was 47.6% among patients with DM/PM (OR 3.86, 95% CI 1.30-11.57; p<0.01). There was no difference between patients and controls for exposure to fibrates. CONCLUSION Patients who developed chronic muscle diseases after the age of 50, including DM/PM, had a higher than expected frequency of prior exposure to statins. Further studies are needed to confirm this association and the role of proton pump inhibitors.
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Allam N, Frank JE, Pereira C, Tomaz C. Sustained attention in cranial dystonia patients treated with botulinum toxin. Acta Neurol Scand 2007; 116:196-200. [PMID: 17714334 DOI: 10.1111/j.1600-0404.2007.00862.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Primary cranial dystonia (PCD) is related to a functional disorder in basal ganglia usually accompanied by impaired executive function. AIM To investigate symptom relief and neurocognitive change in response to treatment with botulinum toxin (BTX) in a group of patients with PCD. METHODS We assessed nine patients with PCD and nine age- and educationally matched healthy individuals using tests of memory, sustained attention, span of auditory attention, and perceptual flexibility. RESULTS Despite well-preserved intellectual skills relative to controls, we identified a sustained attention deficit in patients with PCD. After BTX treatment, there was an increase in the scores of the concentration endurance test (sustained attention) and the values did not differ significantly from control group patients' scores. CONCLUSION The results support the view that executive dysfunction in PCD is secondary to the disrupting effects of the symptoms. Treatment with BTX alleviates the symptoms and, consequently, improves sustained attention.
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Pereira C, Tavares B, Carrapatoso I, Loureiro G, Faria E, Machado D, Chieira C. Low-dose intravenous gammaglobulin in the treatment of severe autoimmune urticaria. Eur Ann Allergy Clin Immunol 2007; 39:237-242. [PMID: 18237000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
BACKGROUND An autoimmune pathogenic mechanism is implicated in about one-third of patients with chronic urticaria (CU), involving circulating functional autoantibodies to either the high affinity IgE receptor (LgG1/IgG3 anti-FcARI) or to IgE, with histamine releasing activity. New therapeutic approaches had been developed for patients with severe or unresponsive to treatment symptoms, including the use of intravenous immunoglobulins (IVIG) as immunomodulators. AIM To assess the efficacy of IVIG treatment in patients with evidence of autoimmune CU. METHODS A group of 29 patients (F = 20, M = 9) with the diagnosis of autoimmune CU were selected from the outpatient department. All the patients showed daily symptoms of urticaria and/or angioedema, with unsatisfactory response to conventional therapy and a positive intradermal autologous serum test (AST). They were submitted to low dose of IVIG treatment each 4 weeks (0.15 g/kg), for a minimum of 6 months and a maximum of 51 months. They were evaluated for clinical scores, need of oral medication and AST results, before and after treatment. RESULTS A clinical improvement was observed in 26 patients, with reduction of urticaria or angioedema complaints (p < 0.0001) and decreasing need for oral antihistamine medication (p = 0.002). 3 patients drop-out the treatment: one depending of severe adverse event and the other 2 with no response after the 5th treatment. 19:26 patients achieved complete remission of symptoms. A reduction of histamine-releasing activity was found in the majority of the patients, documented by the decrea, se of reactivity in AST at the end of the treatment (p = 0.002). 20 patients remained without symptoms during 12 months after. the active treatment, and the other 6 only reported non-severe complaints. CONCLUSION IVIG is an effective therapeutic option in patients suffering from severe CU refractory to conventional treatment, in which autoimmune mechanism is involved. The efficacy persists for at least 12 months after treatment. However, the number of infusions needed to achieve clinical control, showed great range between patients.
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Pereira C, Pinto D, Catarino R, Nogal A, Pereira D, Sousa B, Medeiros R. 5011 ORAL COX-2 polymorphism and susceptibility to gynaecological malignancies: –765C allele confers increased risk for ovarian cancer. EJC Suppl 2007. [DOI: 10.1016/s1359-6349(07)71183-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Tavares B, Pereira C, Rodrigues F, Loureiro G, Chieira C. Goat's milk allergy. Allergol Immunopathol (Madr) 2007; 35:113-6. [PMID: 17594876 DOI: 10.1157/13106780] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
BACKGROUND Goat's milk (GM) allergy not associated with allergy to cow's milk (CM) is a rare disorder. Caseins have been implicated has the major allergens eliciting symptoms. METHODS We report the case of a 27 years-old female patient that experienced two episodes of urticaria related to ingestion of goat's cheese (GC). She tolerated CM, dairy products and sheep cheese. Skin prick tests were performed with GM, CM, bovine casein and alpha -lactalbumin and fresh milk and GC. Serum specific IgE to GM, CM and its fractions, and GM and CM immunobloting assays with inhibition were also evaluated. RESULTS Skin tests were positive to GM and GC and negative to CM. GM immunoblot showed an IgE-binding 14 kDa band that was totally inhibited after serum pre-incubation with GM. CONCLUSIONS Allergens other than casein can be involved in allergy to GM. Even small quantities of protein can elicit symptoms.
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Pereira C, Gil L, Carriço L. Reduction of the 2,4,6-trichloroanisole content in cork stoppers using gamma radiation. Radiat Phys Chem Oxf Engl 1993 2007. [DOI: 10.1016/j.radphyschem.2006.04.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Pereira C, Tavares B, Loureiro G, Lundberg M, Chieira C. Turnip and zucchini: new foods in the latex-fruit syndrome. Allergy 2007; 62:452-3. [PMID: 17362260 DOI: 10.1111/j.1398-9995.2006.01313.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Resende R, Pereira C, Agostinho P, Vieira AP, Malva JO, Oliveira CR. Susceptibility of hippocampal neurons to Abeta peptide toxicity is associated with perturbation of Ca2+ homeostasis. Brain Res 2007; 1143:11-21. [PMID: 17336275 DOI: 10.1016/j.brainres.2007.01.071] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2006] [Revised: 01/03/2007] [Accepted: 01/15/2007] [Indexed: 11/19/2022]
Abstract
Neuritic dystrophy, loss of synapses and neuronal death in the cerebral cortex and hippocampus are hallmarks of Alzheimer's disease. The aim of the present study was to investigate the differential susceptibility of cortical and hippocampal neurons to amyloid-beta (Abeta)-induced toxicity. For that, we have used primary neuronal cultures prepared from rat brain cortex and hippocampus which were treated with the synthetic peptides Abeta25-35 or Abeta1-40. Abeta-induced apoptotic cell death was analyzed by determining caspase-3-like activity. Neuritic dystrophy was evaluated by cobalt staining and MAP2 immunoreactivity. Perturbation of Ca(2+) homeostasis caused by exposure to Abeta was evaluated by determining basal cytosolic calcium levels in the whole neuronal population and by single cell calcium imaging under basal and KCl-depolarization conditions. Finally, levels of GluR2 subunit of glutamate AMPA (alpha-amino-3-hydroxy-5-methylisoxazole-4-proprionate) receptors were quantified by western blotting. Our results demonstrated that hippocampal neurons in culture are more susceptible than cortical neurons to Abeta-induced apoptosis and also that this mechanism involves the perturbation of Ca(2+) homeostasis. Accordingly, the exposure of hippocampal neurons to Abeta peptides decreases the protein levels of the GluR2 subunit of glutamate AMPA receptors that may be associated with a significant rise of cytosolic Ca(2+) concentration, leading to dendritic dystrophy and activation of apoptotic neuronal death.
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Pereira C, Macone F, Lemoigne F. 483 Ventilation à haute fréquence percussive au cours de la prise en charge des détresses respiratoire aiguës hypoxémiantes. Rev Mal Respir 2007. [DOI: 10.1016/s0761-8425(07)72859-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Testa C, Martins F, GonÁalves D, Huttener C, Aguiar O, Oliveira A, Pereira C, Soffiatti N, Ferro R, Zamprogna L. Quality of life (QoL) improvements in 1464 patients (pts) with metastatic breast cancer (MBC) receiving capecitabine (X) in Brazil: implications for oncology nurses. Eur J Oncol Nurs 2006. [DOI: 10.1016/j.ejon.2006.04.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Pereira C, Veiga N, Amaral O, Tavares I. Determinants of Dental Visits in Portuguese Adolescents. Am J Epidemiol 2006. [DOI: 10.1093/aje/163.suppl_11.s15-a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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