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Costa CS, Santos GSD, Pavese R, Souza LAL. PERFIL DOS DOADORES DE PLAQUETAS POR AFÉRESE ATIVOS NO HEMOCENTRO DE CURITIBA. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Pratas N, Salvador D, Costa CS. Gallstone ileus caused by a gallstone impacted at a cecum neoplasm - A case report. Int J Surg Case Rep 2020; 77:107-110. [PMID: 33160167 PMCID: PMC7649433 DOI: 10.1016/j.ijscr.2020.10.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 10/27/2020] [Accepted: 10/27/2020] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Gallstone ileus is an infrequent complication of biliary disease that produces a mechanical intestinal obstruction. It is caused by a gallstone passing through a bilio-digestive communication, usually a cholecystoduodenal fistula. The presence of neoplasms can decrease the bowel lumen size and may cause the gallstone to impact at the narrowing site. CASE SUMMARY In this report, we present a unique case of gallstone ileus due to a gallstone impacted in a cecum tumor, causing obstruction at the level of the ileocecal valve. The patient needed an urgent right hemicolectomy to solve both his problems. The gallbladder and the enterobiliary fistula remained in situ. DISCUSSION The clinical presentation is not always straightforward and sometimes the diagnosis is only made by imaging, mostly resorting to an abdominal CT. The mainstay of management is surgical relief of the gastrointestinal obstruction, with the surgical method being based on what is found intra-operatively and according to the patient general condition. CONCLUSION Although a rare disease, gallstone ileus should be suspected in elderly patients with intestinal obstruction and a previous history of biliary problems, keeping in mind that other conditions may be present and can alter the surgical treatment of choice.
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Affiliation(s)
- N Pratas
- Department of General Surgery, North Alentejo Local Unit E.P.E., Portugal.
| | - D Salvador
- Department of General Surgery, North Alentejo Local Unit E.P.E., Portugal
| | - C S Costa
- Department of General Surgery, North Alentejo Local Unit E.P.E., Portugal
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Costa CS, Pratas N, Capote H. Massive gastric dilation caused by gastric outlet obstruction in the setting of peptic ulcer disease-A case report. Int J Surg Case Rep 2020; 70:64-67. [PMID: 32413770 PMCID: PMC7226640 DOI: 10.1016/j.ijscr.2020.04.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 03/23/2020] [Accepted: 04/02/2020] [Indexed: 01/15/2023] Open
Abstract
Gastric Outlet Obstruction is the least frequent complication of Peptic Ulcer disease. We present a case of massive gastric dilation due to gastric outlet obstruction, that needed emergency surgery due to perforation. We present a case of massive gastric dilation due to gastric outlet obstruction, that needed emergency surgery.
Background The prevalence of Peptic Ulcer Disease has decreased as did its elective surgical treatment, however its complications continue to occur. Gastric Outlet Obstruction is the least frequent complication of Peptic Ulcer disease. Case summary In this report, we present a case of massive gastric dilation due to gastric outlet obstruction, that needed emergency surgery due to perforation. A subtotal gastrectomy with a Billroth II reconstruction was performed. Discussion Usually non-operative management is tried first, with medical therapy and endoscopic dilation. Emergent surgery is rarely needed, but in this patient, despite trying to optimize his condition first, the ulcer perforation precipitated surgical management. Conclusion Although Gastric Outlet Obstruction is the least frequent complication of Peptic Ulcer Disease and usually non-operative treatment is tried first, surgery may be necessary.
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Affiliation(s)
- C S Costa
- Department of General Surgery, North Alentejo Local Unit E.P.E., Portugal.
| | - N Pratas
- Department of General Surgery, North Alentejo Local Unit E.P.E., Portugal
| | - H Capote
- Department of General Surgery, North Alentejo Local Unit E.P.E., Portugal
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Barreto C, Vilela DAR, Houri BF, Lara LB, Torres ACD, Silva ASG, Castro Filho RPL, Costa CS, Martins NRS. New Isospora and Host Species in Brazilian Passerines. Braz J Poult Sci 2020. [DOI: 10.1590/1806-9061-2019-1070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- C Barreto
- Instituto Brasileiro de Meio Ambiente e Recursos Naturais Renováveis, Brazil
| | - DAR Vilela
- Instituto Brasileiro de Meio Ambiente e Recursos Naturais Renováveis, Brazil
| | - BF Houri
- Faculdade de Ciências Médicas de Minas Gerais, Brazil
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Costa CS, Rauber F, Leffa PS, Sangalli CN, Campagnolo PDB, Vitolo MR. Ultra-processed food consumption and its effects on anthropometric and glucose profile: A longitudinal study during childhood. Nutr Metab Cardiovasc Dis 2019; 29:177-184. [PMID: 30660687 DOI: 10.1016/j.numecd.2018.11.003] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 11/11/2018] [Accepted: 11/12/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND AIMS Obesity and insulin resistance development are related to known risk factors (such as diet) that begin in childhood. Among dietary factors, the consumption of ultra-processed foods has received attention. The present study investigated the association between ultra-processed foods consumption at preschool age and changes in anthropometric measurements from preschool to school age and glucose profile at school age. METHODS AND RESULTS The present study was a follow-up of a randomized controlled trial, conducted with 307 children of low socioeconomic status from São Leopoldo, Brazil. At ages 4 and 8 years, children's anthropometric assessments were collected from preschool to school age including body-mass index (BMI) for-age, waist circumference (WC), waist-to-height ratio (WHtR) and skinfold. At the age 8 years, blood tests were performed to measure glucose profile. Dietary data were collected through 24-h recalls and the children's ultra-processed food intake was assessed. Linear regression analysis was used to assess the relationship between ultra-processed food consumption and the outcomes. The percentage of daily energy provided by ultra-processed foods was 41.8 ± 8.7 (753.8 ± 191.0 kcal) at preschool age and 47.8 ± 8.9 (753.8 ± 191.0 kcal) at school age, on average. The adjusted linear regression analyses showed that ultra-processed food consumption at preschool age was a predictor of an increase in delta WC from preschool to school age (β = 0.07; 95%CI 0.01-0.14; P = 0.030), but not for glucose metabolism. CONCLUSION Our data suggest that early ultra-processed food consumption played a role in increasing abdominal obesity in children. These results reinforce the importance of effective strategies to prevent the excessive consumption of ultra-processed foods, especially in early ages.
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Affiliation(s)
- C S Costa
- Graduate Program in Health Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre, RS, Brazil.
| | - F Rauber
- Center for Epidemiological Research in Nutrition and Health, University of Sao Paulo, SP, Brazil
| | - P S Leffa
- Graduate Program in Health Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre, RS, Brazil
| | - C N Sangalli
- Graduate Program in Health Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre, RS, Brazil
| | - P D B Campagnolo
- School of Health, Universidade do Vale do Rio dos Sinos, Sao Leopoldo, RS, Brazil
| | - M R Vitolo
- Graduate Program in Paediatrics, Attention to Children and Adolescent Health, Brazil
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Torres ACD, Costa CS, Pinto PN, Santos HA, Amarante AF, Gómez SYM, Resende M, Martins NRS. An Outbreak of Intestinal Obstruction by Ascaridia Galli in Broilers in Minas Gerais. Braz J Poult Sci 2019. [DOI: 10.1590/1806-9061-2019-1072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- ACD Torres
- Universidade Federal de Minas Gerais, Brazil
| | - CS Costa
- Universidade Federal de Minas Gerais, Brazil
| | - PN Pinto
- Universidade Federal de Minas Gerais, Brazil
| | - HA Santos
- Universidade Federal de Minas Gerais, Brazil
| | - AF Amarante
- Universidade Estadual Paulista “Júlio de Mesquita Filho”, Brazil
| | - SYM Gómez
- Universidade Federal de Minas Gerais, Brazil
| | - M Resende
- Universidade Federal de Minas Gerais, Brazil
| | - NRS Martins
- Universidade Federal de Minas Gerais, Brazil
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Torres ACD, Marin SY, Costa CS, Martins NRS. An Overview on Marek’s Disease Virus Evolution and Evidence for Increased Virulence in Brazil. Braz J Poult Sci 2019. [DOI: 10.1590/1806-9061-2018-0870] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- ACD Torres
- Universidade Federal de Minas Gerais, Brazil
| | - SY Marin
- Universidade Federal de Minas Gerais, Brazil
| | - CS Costa
- Universidade Federal de Minas Gerais, Brazil
| | - NRS Martins
- Universidade Federal de Minas Gerais, Brazil
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Gomez GE, D'vries RF, Lionello DF, Aguirre-Díaz LM, Spinosa M, Costa CS, Fuertes MC, Pizarro RA, Kaczmarek AM, Ellena J, Rozes L, Iglesias M, Van Deun R, Sanchez C, Monge MA, Soler-Illia GJAA. Exploring physical and chemical properties in new multifunctional indium-, bismuth-, and zinc-based 1D and 2D coordination polymers. Dalton Trans 2018; 47:1808-1818. [PMID: 29322149 DOI: 10.1039/c7dt04287f] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Main group element coordination polymers (MGE-CPs) are important compounds for the development of multifunctional materials. However, there has been a shortage of studies regarding their structural, optical, catalytic, mechanical, and antibacterial properties. This work presents an exhaustive study of a set of crystalline MGE-CPs obtained from bismuth and indium metals and iminodiacetate, 1,2,4,5-benzenetetracarboxylate, and 2,2'-bipyridine as building blocks. An in-depth topological analysis of the networks was carried out. Additionally, nanoindentation studies were performed on two representative low-dimensional compounds in order to find the relationships between their structural features and their intrinsic mechanical properties (hardness and elasticity). The solid-state photoluminescence (SSPL) properties were also studied in terms of excitation, emission, lifetimes values, and CIE chromaticites. Moreover, the heterogeneous catalytic activities of the compounds were evaluated with the cyanosilylation reaction using a set of carbonylic substrates under solvent-free conditions. Finally, the inhibitory effect of the Bi-CPs on the growth of microorganisms such as Escherichia coli, Salmonella enterica serovar Typhimurium, and Pseudomonas aeruginosa, which are associated with relevant infectious diseases, is reported.
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Affiliation(s)
- G E Gomez
- Gerencia de Química, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, Av. Gral. Paz 1499, 1650 San Martin, Buenos Aires, Argentina.
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Barichello T, Generoso JS, Silvestre C, Costa CS, Carrodore MM, Cipriano AL, Michelon CM, Petronilho F, Dal-Pizzol F, Vilela MC, Teixeira AL. Circulating concentrations, cerebral output of the CINC-1 and blood–brain barrier disruption in Wistar rats after pneumococcal meningitis induction. Eur J Clin Microbiol Infect Dis 2012; 31:2005-9. [PMID: 22302624 DOI: 10.1007/s10096-011-1533-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Accepted: 12/16/2011] [Indexed: 11/27/2022]
Abstract
Pneumococcal meningitis is a severe infectious illness of the central nervous system (CNS), with high rates of lethality and morbidity, being that the microorganism and the host's inflammatory response are responsible for cerebral complications. Moreover, the blood–brain barrier (BBB) itself secretes cytokines and, because of the bipolar nature of the BBB, these substances can be secreted into either the CNS compartment or in the blood, so patients with acute bacterial meningitis frequently develop sepsis. Therefore, the aim of this study was to evaluate the cytokine/chemokine levels in different vessels and the BBB integrity after pneumococcal meningitis induction. Wistar rats were infected with Streptococcus pneumoniae, and the BBB integrity was investigated using Evan's blue dye. Also, blood from the carotid artery and jugular vein was collected in order to perform tumour necrosis factor-alpha (TNF-α), interleukin-1 beta (IL-1β), interleukin-6 (IL-60 and cytokine-induced neutrophil chemoattractant-1 (CINC-1) analyses by enzyme-linked immunosorbent assay (ELISA). CINC-1 levels were increased at 6 h in the arterial plasma and at 3 and 6 h in the jugular plasma. We observed BBB breakdown between 12 and 24 h in the hippocampus and at 12 and 18 h in the cortex after pneumococcal meningitis induction. The increase of CINC-1 occurred prior to the BBB breakdown. CINC-1 is a neutrophil chemoattractant and it may be related to early events in the pneumococcal meningitis pathophysiology.
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Affiliation(s)
- T Barichello
- Laboratório de Microbiologia Experimental and Instituto Nacional de Ciência e Tecnologia Translacional em Medicina (INCT-TM), Programa de Pós-Graduação em Ciências da Saúde (PPGCS), Unidade Acadêmica de Ciências da Saúde (UNASAU), Universidade do Extremo Sul Catarinense, SC, Brazil.
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Severino FE, Brandalise M, Costa CS, Wilcken SRS, Maluf MP, Gonçalves W, Maia IG. CaPrx, a Coffea arabica gene encoding a putative class III peroxidase induced by root-knot nematode infection. Plant Sci 2012; 191-192:35-42. [PMID: 22682563 DOI: 10.1016/j.plantsci.2012.04.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Revised: 04/18/2012] [Accepted: 04/21/2012] [Indexed: 06/01/2023]
Abstract
Class III peroxidases (Prxs) are enzymes involved in a multitude of physiological and stress-related processes in plants. Here, we report on the characterization of a putative peroxidase-encoding gene from Coffea arabica (CaPrx) that is expressed in early stages of root-knot nematode (RKN) infection. CaPrx showed enhanced expression in coffee roots inoculated with RKN (at 12 h post-inoculation), but no significant difference in expression was observed between susceptible and resistant plants. Assays using transgenic tobacco plants harboring a promoter-β-glucuronidase (GUS) fusion revealed that the CaPrx promoter was exclusively active in the galls induced by RKN. In cross sections of galls, GUS staining was predominantly localized in giant cells. Up-regulation of GUS expression in roots of transgenic plants following RKN inoculation was observed within 16 h. Moreover, no increase in GUS expression after treatment with jasmonic acid was detected. Altogether, these results point to a putative role of this peroxidase in the general coffee response to RKN infection.
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Affiliation(s)
- Fábio E Severino
- UNESP, Instituto de Biociências, Departamento de Genética, Botucatu, SP, Brazil
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Clara AI, Costa CS, Silva J, Marques JC, Moura C, André S, Luís A, Bento S, Opinião A, Rodrigues P, Machado P, Fragoso S, Santos S, Vaz F. P2-13-11: Follow Up of BRCA1/2 Carriers: The Spectrum of Cancer Diagnoses in Healthy at Risk Individuals (HTR), and in Cancer Survivors (CS). Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p2-13-11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction and Objective: Data from long term follow up of BRCA1/2 carriers is scarce and is mainly related to BRCA1 women. Our multidisciplinary program targets both women and men for counselling towards BRCA1/2 screening and inclusion in clinical follow up. In here we review all cancer diagnoses observed in our BRCA1/2 cohort during follow up.
Methods: Review of individual records of BRCA1/2 carriers registered from January 2000 to December 2010. Follow up was calculated since BRCA1/2 post-test counselling until the last visit to the Clinic. All new cancer diagnoses and preventive surgeries were registered.
Results: Two-hundred and fifty nine BRCA1/2 carriers (206 females and 53 males) were diagnosed with BRCA1/2 mutations (42 BRCA1 and 217 BRCA2). Medium follow up for all population is 25 months (1-98). At the date of initial BRCA1/2 diagnosis 99 women and 14 men were CS.
Female population: Eighty-eight female CS had been previously diagnosed with breast cancer (18 bilateral cases), 18 with ovarian cancer, and 1 with biliary tract cancer. Preventive surgeries in the CS female population were: bilateral adnexectomy (33 pts) and prophylactic contralateral mastectomy (10 pts). In this CS female population, new cancers, during follow up were: Contralateral breast cancer (4 cases), peritoneal cancer (2 cases in pts with previous prophylactic surgery) and skin non-melanoma cancers (2 cases). In female HTR, 23 preventive bilateral adnexectomies and 20 bilateral mastectomies were performed. Cancer diagnoses during follow up were: breast (11), peritoneum (1 in a pt with previous prophylactic surgery), gastric (1) and M3 leukemia (1). Global failure of prophylactic adnexectomy, so far (CS+HTR): 3/56 (5%).
Male population: The medium age for male CS is 73 yrs and for male HTR is 52 yrs. Male CS had mostly been previously diagnosed with BC (12; 4 bilateral) and prostate cancer (4). Other previous cancers: gastric (2), skin (2: 1Melanoma, 1 non-Melanoma), colorectal (1). One BRCA2 man with gynecomastia and prostate cancer was submitted to reduction mastectomy, as a preventive surgery. During follow up, we diagnosed second and third cancers in male CS: breast (2), prostate (6) and gastric (1). Only 1 male HTR was diagnosed with cancer: skin non-melanoma.
Conclusion: The proportion of second and third cancer diagnoses in the male BRCA2 CS population is higher than in the female BRCA1/2 CS population. Small numbers and the availability of preventive surgery for women influence this observation. No data from preventive mastectomy exists for males (we have one case). The low frequency of cancer in male HTR may be due to younger age and other unknown modifier factors. Longer follow is needed.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P2-13-11.
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Affiliation(s)
- AI Clara
- 1Instituto Portuguěs de Oncologia, Lisbon, Portugal
| | - CS Costa
- 1Instituto Portuguěs de Oncologia, Lisbon, Portugal
| | - J Silva
- 1Instituto Portuguěs de Oncologia, Lisbon, Portugal
| | - JC Marques
- 1Instituto Portuguěs de Oncologia, Lisbon, Portugal
| | - C Moura
- 1Instituto Portuguěs de Oncologia, Lisbon, Portugal
| | - S André
- 1Instituto Portuguěs de Oncologia, Lisbon, Portugal
| | - A Luís
- 1Instituto Portuguěs de Oncologia, Lisbon, Portugal
| | - S Bento
- 1Instituto Portuguěs de Oncologia, Lisbon, Portugal
| | - A Opinião
- 1Instituto Portuguěs de Oncologia, Lisbon, Portugal
| | - P Rodrigues
- 1Instituto Portuguěs de Oncologia, Lisbon, Portugal
| | - P Machado
- 1Instituto Portuguěs de Oncologia, Lisbon, Portugal
| | - S Fragoso
- 1Instituto Portuguěs de Oncologia, Lisbon, Portugal
| | - S Santos
- 1Instituto Portuguěs de Oncologia, Lisbon, Portugal
| | - F Vaz
- 1Instituto Portuguěs de Oncologia, Lisbon, Portugal
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Costa CS, Antón DN. Role of the ftsA1p promoter in the resistance of mucoid mutants of Salmonella enterica to mecillinam: characterization of a new type of mucoid mutant. FEMS Microbiol Lett 2001; 200:201-5. [PMID: 11425476 DOI: 10.1111/j.1574-6968.2001.tb10716.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Mucoid mutants of Salmonella enterica serovar Typhimurium isolated by resistance to mecillinam include lon (27%) and rcsC (8%) mutants but the most frequent class (65%) is affected in a new gene (mucM) located at centisome 76. mucM cells are shorter than mucM+ cells and rcsB mutations normalize size and response to mecillinam. Expression of ftsA1p, the ftsA-ftsZ promoter submitted to RcsB stimulation, is greatly increased in mucM mutants, and this expression is dependent on RcsB and ftsA1p. It is proposed that the mucM product interferes with RcsB activation. Mucoidy results from the activation of cps genes and mecillinam resistance from ftsA-ftsZ overexpression, both traits caused by the increased activity of the RcsB effector. The same mechanism seems to be responsible for the resistance of mucoid rcsC mutants to mecillinam but the resistance of lon mutants is not dependent on RcsB and so responds to a different cause.
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Affiliation(s)
- C S Costa
- Departamento de Radiobiología, Comisión Nacional de Energía Atómica, Avda. General Paz 1499, 1650, San Martín, Argentina
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Abstract
BACKGROUND AND OBJECTIVES Surgical resection of lung metastases is an established therapy for a large number of primary tumors, but there is some controversy about prognostic factors for long-term survival. METHODS From 1968 to 1996, we performed a retrospective review of a series of 85 patients (100 operations) that have been operated for resection of lung metastases. The Kaplan-Meier method was used to estimate the probabilities of survival, the log-rank test for the univariate analysis of prognostic factors for survival, and the Cox model in the subsequent multivariate analysis. RESULTS The operative mortality was 4% and the morbidity 18%. The mean follow-up after lung resection was 22.13 months (1-146). The actuarial 5-year survival rate was 29.2%. By univariate analysis, the following factors were associated with survival after resection: location and histology of the primary tumor, greatest dimension of the largest metastasis, radicality of the resection, involvement of the resection margins, and use of adjuvant therapy (P < 0.05). After multivariate analysis, only the dimension of the metastases and involvement of surgical margins have been found to be independently associated with survival. CONCLUSIONS Surgical excision is a safe and effective therapy for lung metastases from a large number of primary tumors, provided a complete resection is feasible.
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Affiliation(s)
- N Abecasis
- Department of Surgery, Instituto Portugues de Oncologia Francisco Gentil-Centro de Lisboa, Lisboa, Portugal.
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Costa CS, Antón DN. Conditional lethality of cell shape mutations of Salmonella typhimurium: rodA and mre mutants are lethal on solid but not in liquid medium. Curr Microbiol 1999; 38:137-42. [PMID: 9922463 DOI: 10.1007/pl00006777] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Round-cell (rodA, mre, divD) derivatives of a conditional alaS mutant of Salmonella typhimurium were studied under conditions allowing expression of tolerance to lethal cell shape mutations (41 degrees C), and under nontolerant conditions (30 degrees C). The rodA22::Tn10d(Kan) derivative grew normally (OD650 nm) in LB-broth at 30 degrees C; however, doubling of total cell count took much longer (130 min) than at 41 degrees C (57 min). Although the cells were able to divide in LB-broth at 30 degrees C, viable count on LB-agar at 30 degrees C was 10(3)-fold lower than on LB-agar at 41 degrees C. Phase-contrast microscopy of rodA cells incubated under different conditions showed that their size increased on LB-soft agar at 30 degrees C, but they failed to divide and finally lysed. In contrast, division occurred in LB-broth at 30 degrees C and also in LB-broth and LB-soft agar at 41 degrees C. The mre-17::Tn10d(Kan) derivative acted like the rodA strain whereas the divD135::Tn10d(Kan) mutant behaved normally both at 30 degrees C and 41 degrees C. It is concluded that rodA and mre mutations delay cell division, but are lethal only on solid medium. Mutations conferring tolerance to "lethal" rodA and mre mutations improve division performance both in liquid and solid media.
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Affiliation(s)
- C S Costa
- Departamento de Radiobiología, Comisión Nacional de Energía Atómica, Avda. del Libertador 8250, 1429 Buenos Aires, Argentina
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Vainzof M, Costa CS, Marie SK, Moreira ES, Reed U, Passos-Bueno MR, Beggs AH, Zatz M. Deficiency of alpha-actinin-3 (ACTN3) occurs in different forms of muscular dystrophy. Neuropediatrics 1997; 28:223-8. [PMID: 9309713 DOI: 10.1055/s-2007-973704] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The alpha-actinins belong to a superfamily of cytoskeletal proteins, and their role in human genetic diseases is still unclear. Therefore, they could be good candidates for muscular dystrophies of unknown etiology. We have analyzed alpha-actinin-3 (ACTN3) in muscle biopsies from a total of 54 patients. A complete deficiency was found in 9 patients: 2/12 with classical merosin-positive congenital MD (CMD), 1/12 with Severe Childhood Autosomal Recessive MD (DLMD), but with a positive IF pattern for the proteins of the sarcoglycan complex: 3/14 with mild limb-girdie MD (1LGMD2A and 2 yet unclassified), 1/10 with sarcoglycanopathies (LGMD2C), and 2/6 with Xp21 Duchenne MD (DMD). Patients within the same family, and with the same disease (DMD, LGMD2A, LGMD2C), were discordant for ACTN3 deficiency. Additionally, no correlation was found with the degree of muscle degeneration, nor with the clinical course. One ACTN3-deficient CMD patient showed no mRNA expression for the muscle ACTN3 gene, but the other ACTN3-deficient patients with different forms of muscular dystrophy showed very low or no mRNA expression as well. These results show that the deficiency of ACTN3 is a secondary effect in these dystrophies.
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Affiliation(s)
- M Vainzof
- Departamento de Neurologia, Eaculdade de Medicina, Universidade de Säo Paulo, Brazil
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de Almeida JC, Bettencourt A, Costa CS, de Almeida JM. [The curative surgery of periampullary tumors. The results of 48 resections]. ACTA MEDICA PORT 1995; 8 Suppl 1:S35-9. [PMID: 7653304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Periampullary tumors form a clinical entity with common symptoms, similar therapeutic options, unsatisfactory resectability rates and unfavorable prognosis. From April 1970 until March 1994, one hundred and twenty-seven patients with periampullary carcinoma were operated by our surgical team. In 48 of these patients, a resection for cure was performed (38%). Resectability rates varied according to the origin of these tumors, i.e., pancreas-20%, ampulla-76%; distal bile duct-71%, periampullary duodenum-88%. Pancreatic tumors showed a different resectability rate from the other periampullary carcinomas (p = 0.04). Forty-two of these patients had a pancreatoduodenectomy and in the remaining 6 cases a total pancreatectomy was performed. Fifteen patients had major post-operative morbidity (31%) and 8 of these cases died in-hospital (17%). Follow-up data was available in 81% of the patients, survival estimates were calculated according to the Kaplan-Meier method and survival comparisons were made with the Log-rank test. Median survival for resected pancreatic carcinoma was 6 months and for resected tumors of the ampulla 37 months. In this group of patients, pancreatic tumors showed a different survival rate from the remaining periampullary tumors (Log-rank-p = 0.002). This work evidences the need to improve management of periampullary tumors, particularly in-hospital mortality and long-term survival. To achieve these goals, patients with periampullary tumors should be treated in specialized centers and research to improve local and systemic control of this disease should be pursued.
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Affiliation(s)
- J C de Almeida
- Clínica Oncológica III, Instituto Português de Oncologia de Francisco Gentil, Lisboa
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de Almeida JC, Bettencourt A, Costa CS, de Almeida JM. Curative surgery for gastric cancer: study of 166 consecutive patients. World J Surg 1994; 18:889-94; discussion 894-5. [PMID: 7846914 DOI: 10.1007/bf00299097] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
From January 1980 to December 1991 we operated on 295 patients with a gastric carcinoma. In 166 cases (56.3%) surgery was performed with curative intent. In 93 patients (56%) a subtotal gastrectomy was performed, and in 73 cases (44%) a total gastrectomy. In all the cases a D-2 type lymphadenectomy was used. The global morbidity rate was 23%, and in-hospital mortality was 3.6%. The morbidity and mortality rates of these two operations were statistically different. Global 5-year survival estimate for the whole series is 61.3%. Univariate and multivariate analysis according to T and N (TNM classification), the number of positive nodes resected, and the relation of positive per resected nodes, revealed statistically different outcomes. This kind of quantitative classification allowed identification of high risk groups irrespective of site of nodal involvement. Tumors classified as intestinal or diffuse type by the Lauren classification had similar survival curves and 5-year survival estimates (p = 0.834). By univariate and multivariate analysis this classification did not reveal a prognostic value in this group of patients. In our opinion, tumor penetration and lymph node involvement are at present the most reliable prognostic factors available.
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Affiliation(s)
- J C de Almeida
- Department of Surgery, Instituto Português de Oncologia de Francisco Gentil, Centro de Lisboa, Clínica Oncológica III, Lisbon, Portugal
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de Almeida JC, Bettencourt A, Costa CS, de Almeida JM. [Palliative surgery in carcinoma of the stomach. Retrospective study of 112 consecutive cases]. ACTA MEDICA PORT 1993; 6:55-8. [PMID: 7683840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
From January 1980 until October 1991 we operated 112 patients with Gastric cancer in which Surgery was considered palliative by intra-operative criteria or by pathological analysis of the resected specimen. Locally irresectable tumour was found in 24.1% of the cases, peritoneal metastases (mets.) in 21.4%, liver mets. in 17%, lymphatic mets. in 16.1%, and other mets. in 21.4%. Resections were possible in 57 patients (50.8%), with a mortality rate of 10.5%, which was similar to the mortality in the non-resection group (7%) p = 0.2. Median survival for the entire group was 7 months, the non-resection group had a median survival of 4 months, and the resection group of 18 months (p = 6.480 e-0.7). Locally advanced tumors had a better outcome than the metastatic group (p = 0.05), but no difference was observed between patients with liver or peritoneal mets. Patients in stage 3 and 4 of the disease had a different prognosis (p = 0.03), and the resection group within each stage fared better.
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Affiliation(s)
- J C de Almeida
- Departamento de Cirurgia, Instituto Português de Oncologia, Centro de Lisboa
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Costa CS, Antón DN. Round-cell mutants of Salmonella typhimurium produced by transposition mutagenesis: lethality of rodA and mre mutations. Mol Gen Genet 1993; 236:387-94. [PMID: 8382342 DOI: 10.1007/bf00277138] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Thirty-three insertions of transposon Tn10 delta 16 delta 17 into genes involved in the control of rod cell shape were isolated in Salmonella typhimurium by the characteristic glossy appearance of colonies composed of spherical cells. Genetic tests demonstrated that 25 (76%) were insertions in the rodA gene, 7 (21%) were mre mutants, and 1 (3%) was a divD mutant. No insertion in the pbpA gene were found. Insertions in cell shape genes only appeared when strains displaying resistance to mecillinam (not caused by beta-lactamase production) were employed. Neither rodA nor mre insertions could be transduced to wild-type strains but they were normally accepted by mecillinam-resistant derivatives and by cya and crp mutants, which, unlike the corresponding Escherichia coli strains, did not display resistance to mecillinam. On the other hand, the divD insertion could be efficiently transduced to any strain. It is concluded that the rodA, mre, and divD genes are involved in the control of rod cell shape but, in addition, the RodA and Mre products perform some function(s) that is essential for wild-type cells but dispensable for some mecillinam-resistant strains, and for cya and crp mutants.
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Affiliation(s)
- C S Costa
- Departamento de Radiobiología, Comisión Nacional de Energía Atómica, Buenos Aires, Argentina
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Tiriba AC, Miziara AM, Lorenço R, da Costa RB, Costa CS, Pinto GH. [Primary human epidemic encephalitis induced by Arbovirus found at the sea shore south of the State of São Paulo. Clinical study in an emergency hospital]. AMB Rev Assoc Med Bras 1976; 22:415-20. [PMID: 1087985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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