1
|
Gomez R, Galasso M, Romero R, Mazor M, Sorokin Y, Gonçalves L, Treadwell M. Ultrasonographic examination of the uterine cervix is better than cervical digital examination as a predictor of the likelihood of premature delivery in patients with preterm labor and intact membranes. Am J Obstet Gynecol 1994; 171:956-64. [PMID: 7943109 DOI: 10.1016/0002-9378(94)90014-0] [Citation(s) in RCA: 164] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
OBJECTIVE The purpose of this study was to compare the diagnostic performance of ultrasonographic and digital examination of the cervix in the prediction of preterm delivery in patients presenting with preterm labor and intact membranes. STUDY DESIGN Endovaginal ultrasonography was performed in 59 patients admitted with preterm labor (20 to 35 weeks) and cervical dilatation of < 3 cm. Cervical parameters evaluated included endocervical length, the presence of funneling, funnel length, funnel width, cervical index ([Funnel length + 1]/Endocervical length), and cervical dilatation and effacement as determined by digital examination. Outcome variables were the occurrence of preterm delivery (< 36 weeks) and the admission-to-delivery interval. RESULTS The prevalence of preterm delivery was 37.3% (22/59). Receiver-operator characteristic curve and logistic regression analyses indicated a significant relationship between the occurrence of preterm delivery and ultrasonographic cervical parameters (p < 0.005 for each) but not with the results of digital examination of the cervix. Survival analysis demonstrated a shorter admission-to-delivery interval for patients with an abnormal cervical index or endocervical length (p < 0.005 for each). CONCLUSIONS Endovaginal ultrasonographic examination of the uterine cervix is more accurate than digital examination of the cervix in the assessment of the risk for preterm delivery in patients with preterm labor and intact membranes.
Collapse
|
Clinical Trial |
31 |
164 |
2
|
Collares-Pereira M, Couceiro S, Franca I, Kurtenbach K, Schäfer SM, Vitorino L, Gonçalves L, Baptista S, Vieira ML, Cunha C. First isolation of Borrelia lusitaniae from a human patient. J Clin Microbiol 2004; 42:1316-8. [PMID: 15004107 PMCID: PMC356816 DOI: 10.1128/jcm.42.3.1316-1318.2004] [Citation(s) in RCA: 148] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The first human isolate of Borrelia lusitaniae recovered from a Portuguese patient with suspected Lyme borreliosis is described. This isolate, from a chronic skin lesion, is also the first human isolate of Borrelia in Portugal. Different phenotypic and molecular methods are used to characterize it.
Collapse
|
Research Support, Non-U.S. Gov't |
21 |
148 |
3
|
Saraiva F, Matos V, Gonçalves L, Antunes M, Providência LA. Complications of endomyocardial biopsy in heart transplant patients: a retrospective study of 2117 consecutive procedures. Transplant Proc 2011; 43:1908-12. [PMID: 21693299 DOI: 10.1016/j.transproceed.2011.03.010] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Accepted: 03/01/2011] [Indexed: 12/16/2022]
Abstract
BACKGROUND Endomyocardial biopsy (EMB) remains the gold standard for the diagnosis of graft rejection after heart transplantation (HT). Our purpose was to evaluate the rate of complications of this invasive procedure. METHODS This was a retrospective study of 175 patients, who were transplanted between November 2003 and October 2010 and survived more than 1 month after surgery. We evaluated the number of inconclusive EMB and described the incidence, nature, and subsequent management of several complications associated with this procedure. RESULTS Over a period of approximately 7 years, we performed 2217 EMB yielding 4972 specimens, namely, an average of 2.3 fragments per procedure. The majority of EMBs (95.3%) were performed by the femoral approach. Only 12 EMB (0.57%) were inconclusive. The overall complication rate was 0.71%. During puncture, one patient experienced a vasovagal reaction and another one, a femoral artery false aneurysm. During the biopsy, there was one case of cardiac perforation with tamponade, two cases of supraventricular tachycardia, and three atrioventricular conduction abnormalities. In 19 patients, histological analysis revealed chordal tissue, but only two patients developed mild tricuspid regurgitation. We observed five cases of coronary artery fistulae. The clinical outcomes were favorable in all cases. CONCLUSION EMB proved to be a suitable, safe method to monitor rejection after HT.
Collapse
|
Journal Article |
14 |
77 |
4
|
Quintero RA, Romero R, Reich H, Gonçalves L, Johnson MP, Carreño C, Evans MI. In utero percutaneous umbilical cord ligation in the management of complicated monochorionic multiple gestations. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 1996; 8:16-22. [PMID: 8843613 DOI: 10.1046/j.1469-0705.1996.08010016.x] [Citation(s) in RCA: 75] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The study was designed to report our experience with in utero percutaneous umbilical cord ligation for selective feticide in pre-viable, abnormal, monochorionic multiple gestations. The selection criteria prior to offering percutaneous umbilical cord ligation included normal anatomy in the other fetus(es), normal karyotype and polyhydramnios, or uterine contractions. The procedure was performed under combined endoscopic and sonographic guidance. Fifteen patients were referred for evaluation and possible treatment. Two patients were excluded because of misdiagnosis. The mean gestational age at the time of the procedure was 21 weeks (range 16-25 weeks). There were ten acardiac twins, one discordant twin with acrania, and two cases of twin-twin transfusion syndrome with a hydropic twin. Percutaneous umbilical cord ligation was accomplished in 11/13 (84%) cases. An average of 8.5 weeks (range 0-18.5 weeks) was gained after percutaneous umbilical cord ligation, and five of 11 patients delivered at or after 30 weeks. Seven of 11 patients undergoing ligation procedures had living children. Premature rupture of membranes occurred within 3 weeks in 4/13 (30%) of cases. In utero fetal demise remote from the procedure occurred in three ligated patients undergoing ligation, in two of which intraoperative bleeding occurred. One fetus with cystic fibrosis died in the newborn period. Percutaneous umbilical cord ligation is an evolving alternative technique for the management of abnormal monochorionic multiple gestations. The advantages of percutaneous umbilical cord ligation over other approaches include complete extravascular interruption of the blood flow in all vessels of the cord. This may prevent postmortem feto-fetal hemorrhage or possible embolic phenomena that may result in death of the normal twin, as seen with intravascular techniques. Percutaneous umbilical cord ligation prior to spontaneous death of a co-twin may also avert the neurological and other complications that may occur in the surviving twin. Technological advances should decrease the observed complications and improve the success rate of the procedure.
Collapse
|
|
29 |
75 |
5
|
Lazarous DF, Shou M, Stiber JA, Hodge E, Thirumurti V, Gonçalves L, Unger EF. Adenoviral-mediated gene transfer induces sustained pericardial VEGF expression in dogs: effect on myocardial angiogenesis. Cardiovasc Res 1999; 44:294-302. [PMID: 10690306 DOI: 10.1016/s0008-6363(99)00203-5] [Citation(s) in RCA: 72] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE Angiogenic peptides like VEGF (vascular endothelial growth factor) and bFGF (basic fibroblast growth factor) have entered clinical trials for coronary artery disease. Attempts are being made to devise clinically relevant means of delivery and to effect site-specific delivery of these peptides to the cardiac tissue, in order to limit systemic side-effects. We characterized the response of the pericardium to delivery of a replication-deficient adenovirus carrying the cDNA for AdCMV.VEGF165, and assessed the effect of pericardial VEGF165 on myocardial collateral development in a canine model of progressive coronary occlusion. METHODS Ameroid constrictors were placed on the proximal left circumflex coronary artery of mongrel dogs. Ten days later, 6 x 10(9) pfu AdCMV.VEGF165 (n = 9). AdRSV.beta-gal (n = 9), or saline (n = 7) were injected through an indwelling pericardial catheter. Transfection efficiency was assessed by X-gal staining. Pericardial and serum VEGF levels were measured serially by ELISA. Maximal myocardial collateral perfusion was quantified with radiolabeled or fluorescent microspheres 28 days after treatment. RESULTS In AdRSV.beta-gal-treated dogs, there was extensive beta-gal staining in the pericardium and epicardium, with minimal beta-gal staining in the mid-myocardium and endocardium. Pericardial delivery of AdCMV.VEGF165 resulted in sustained (8-14 day) pericardial transgene expression, with VEGF levels peaking 3 days after infection (> 200 ng/ml) and decreasing thereafter. There was no detectable increase in serum VEGF levels. Maximal collateral perfusion, a principal correlate of collateral development and angiogenesis, was equivalent in all groups. CONCLUSION Adenoviral-mediated gene transfer is capable of inducing sustained VEGF165 expression in the pericardium; however, locally targeted pericardial VEGF delivery failed to improve myocardial collateral perfusion in this model.
Collapse
|
|
26 |
72 |
6
|
Park DS, Kozaki T, Tiwari SK, Moreira M, Khalilnezhad A, Torta F, Olivié N, Thiam CH, Liani O, Silvin A, Phoo WW, Gao L, Triebl A, Tham WK, Gonçalves L, Kong WT, Raman S, Zhang XM, Dunsmore G, Dutertre CA, Lee S, Ong JM, Balachander A, Khalilnezhad S, Lum J, Duan K, Lim ZM, Tan L, Low I, Utami KH, Yeo XY, Di Tommaso S, Dupuy JW, Varga B, Karadottir RT, Madathummal MC, Bonne I, Malleret B, Binte ZY, Wei Da N, Tan Y, Wong WJ, Zhang J, Chen J, Sobota RM, Howland SW, Ng LG, Saltel F, Castel D, Grill J, Minard V, Albani S, Chan JKY, Thion MS, Jung SY, Wenk MR, Pouladi MA, Pasqualini C, Angeli V, Cexus ONF, Ginhoux F. iPS-cell-derived microglia promote brain organoid maturation via cholesterol transfer. Nature 2023; 623:397-405. [PMID: 37914940 DOI: 10.1038/s41586-023-06713-1] [Citation(s) in RCA: 67] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 10/04/2023] [Indexed: 11/03/2023]
Abstract
Microglia are specialized brain-resident macrophages that arise from primitive macrophages colonizing the embryonic brain1. Microglia contribute to multiple aspects of brain development, but their precise roles in the early human brain remain poorly understood owing to limited access to relevant tissues2-6. The generation of brain organoids from human induced pluripotent stem cells recapitulates some key features of human embryonic brain development7-10. However, current approaches do not incorporate microglia or address their role in organoid maturation11-21. Here we generated microglia-sufficient brain organoids by coculturing brain organoids with primitive-like macrophages generated from the same human induced pluripotent stem cells (iMac)22. In organoid cocultures, iMac differentiated into cells with microglia-like phenotypes and functions (iMicro) and modulated neuronal progenitor cell (NPC) differentiation, limiting NPC proliferation and promoting axonogenesis. Mechanistically, iMicro contained high levels of PLIN2+ lipid droplets that exported cholesterol and its esters, which were taken up by NPCs in the organoids. We also detected PLIN2+ lipid droplet-loaded microglia in mouse and human embryonic brains. Overall, our approach substantially advances current human brain organoid approaches by incorporating microglial cells, as illustrated by the discovery of a key pathway of lipid-mediated crosstalk between microglia and NPCs that leads to improved neurogenesis.
Collapse
|
|
2 |
67 |
7
|
Quintero RA, Reich H, Romero R, Johnson MP, Gonçalves L, Evans MI. In utero endoscopic devascularization of a large chorioangioma. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 1996; 8:48-52. [PMID: 8843620 DOI: 10.1046/j.1469-0705.1996.08010048.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Clinically significant chorioangiomas, i.e. those greater than 4 cm in diameter, are associated with an overall fetal loss rate of approximately 40%. Maternal complications may also be present. Most patients diagnosed with chorioangiomas have been managed expectantly. A patient with a large chorioangioma was referred to our institution, with a fetus that was hydropic and showed sonographic signs of over heart failure. Fetal anemia, marked erythropoiesis and hypoalbuminemia were documented on cordocentesis. The blood supply to the mass consisted of an artery and a vein of 9 mm in diameter. The vascular supply to the tumor was ablated via operative fetoscopy by suture ligation of the arterial supply, after subchorionic dissection of the vessel. The remaining blood supply was electrocoagulated with bipolar cautery. Although the procedure was technically successful, the fetus died on the 3rd postoperative day. This case illustrates ablation of the blood supply of placental chorioangiomas as a potential management alternative for those patients with large chorioangiomas. Early identification and treatment may result in a successful outcome.
Collapse
|
Case Reports |
29 |
59 |
8
|
Pinto J, Sousa CA, Gil V, Ferreira C, Gonçalves L, Lopes D, Petrarca V, Charlwood JD, do Rosário VE. Malaria in São Tomé and Príncipe: parasite prevalences and vector densities. Acta Trop 2000; 76:185-93. [PMID: 10936578 DOI: 10.1016/s0001-706x(00)00100-5] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A cross-sectional survey was carried out in 16 localities on the island of São Tomé and three on the island of Príncipe, at the end of the rainy season of 1997, to determine malaria prevalence and vector densities. Blood samples from 664 inhabitants of all ages were examined by optical microscopy (OM) and PCR. Mosquito collections were made by outdoor landing captures from 21:00-23:00 h. Great differences were found between OM and PCR readings. OM had a sensitivity of 66%, a specificity of 79% and failed to reveal any mixed-infections. Overall prevalence, determined by PCR, was higher in São Tomé (53%) than in Príncipe (35%). It was highest in children below 16 years-old. All four human Plasmodium species occurred in São Tomé but P. ovale was not detected in Príncipe. The human population was largely asymptomatic. Bednet users had lower prevalence than did non-users. The FOREST form of Anopheles gambiae s.s., identified by PCR and cytogenetics, was the only vector on the islands. The sporozoite rate in São Tomé, assessed by ELISA, was 0.5%. Parasite prevalence and vector densities were positively correlated in São Tomé, where malaria transmission must occur predominantly in the more populated coastal areas.
Collapse
|
|
25 |
46 |
9
|
Maia C, Rolão N, Nunes M, Gonçalves L, Campino L. Infectivity of five different types of macrophages by Leishmania infantum. Acta Trop 2007; 103:150-5. [PMID: 17626776 DOI: 10.1016/j.actatropica.2007.06.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2007] [Revised: 05/22/2007] [Accepted: 06/01/2007] [Indexed: 11/18/2022]
Abstract
Leishmania are intracellular parasites that multiply as the amastigote form in the macrophages of their vertebrate hosts. Since vaccines against leishmaniases are still under development, the control of these diseases relies on prompt diagnosis and chemotherapy in infected humans as well as in dogs, which are the main reservoir of Leishmania infantum, in Mediterranean countries. To establish the macrophage type to be used as an in vitro model for antileishmanial chemotherapeutic studies, we analysed the susceptibility of human peripheral blood derived macrophages, macrophages derived from mouse bone marrow, mouse peritoneal macrophages and macrophages differentiated from cell lines U-937 and DH82 to infection by two L. infantum strains, one obtained from a human leishmanial infection and other from a canine infection. Both strains displayed comparable behaviour in their capacity of infecting the different macrophage types. Human peripheral blood macrophages and DH82 cells were less infectable by both strains. U-937, mouse peritoneal macrophages and mouse bone marrow derived macrophages are the most active cells to phagocytose the parasites. However, U-937 cell line appears to be the most useful as Leishmania infection model providing an unlimited source of homogeneous host cells with reproducibility of the results, is less time consuming, less expensive and tolerate high doses of first line drugs for human and canine visceral leishmaniasis treatment.
Collapse
|
|
18 |
42 |
10
|
Cohen J, Ghezzi F, Gonçalves L, Fuentes JD, Paulyson KJ, Sherer DM. Prenatal sonographic diagnosis of Treacher Collins syndrome: a case and review of the literature. Am J Perinatol 1995; 12:416-9. [PMID: 8579653 DOI: 10.1055/s-2007-994511] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
We report the prenatal ultrasonographic diagnosis of a fetus with mandibulofacial dysostosis (Treacher Collins syndrome). Sonographic findings included: polyhydramnios, microcephaly, abnormal fetal facial features (slanting forehead, microphthalmos, micrognathia), and abnormal fetal swallowing. A review of the current literature pertaining to prenatal diagnosis of this condition is presented.
Collapse
|
Case Reports |
30 |
37 |
11
|
Heinricher MM, Neubert MJ, Martenson ME, Gonçalves L. Prostaglandin E2 in the medial preoptic area produces hyperalgesia and activates pain-modulating circuitry in the rostral ventromedial medulla. Neuroscience 2004; 128:389-98. [PMID: 15350650 DOI: 10.1016/j.neuroscience.2004.06.050] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/28/2004] [Indexed: 11/22/2022]
Abstract
Prostaglandin E2 (PGE2) produced in the medial preoptic region (MPO) in response to immune signals is generally accepted to play a major role in triggering the illness response, a complex of physiological and behavioral changes induced by infection or injury. Hyperalgesia is now thought to be an important component of the illness response, yet the specific mechanisms through which the MPO acts to facilitate nociception have not been established. However, the MPO does project to the rostral ventromedial medulla (RVM), a region with a well-documented role in pain modulation, both directly and indirectly via the periaqueductal gray. To test whether PGE2 in the MPO produces thermal hyperalgesia by recruiting nociceptive modulating neurons in the RVM, we recorded the effects of focal application of PGE2 in the MPO on paw withdrawal latency and activity of identified nociceptive modulating neurons in the RVM of lightly anesthetized rats. Microinjection of a sub-pyrogenic dose of PGE2 (50 fg in 200 nl) into the MPO produced thermal hyperalgesia, as measured by a significant decrease in paw withdrawal latency. In animals displaying behavioral hyperalgesia, the PGE2 microinjection activated on-cells, RVM neurons thought to facilitate nociception, and suppressed the firing of off-cells, RVM neurons believed to have an inhibitory effect on nociception. A large body of evidence has implicated prostaglandins in the MPO in generation of the illness response, especially fever. The present study indicates that the MPO also contributes to the hyperalgesic component of the illness response, most likely by recruiting the nociceptive modulating circuitry of the RVM.
Collapse
|
Research Support, U.S. Gov't, P.H.S. |
21 |
28 |
12
|
Silvestre FG, de Castro CS, de Moura JF, Giusta MS, De Maria M, Alvares ESS, Lobato FCF, Assis RA, Gonçalves LA, Gubert IC, Chávez-Olórtegui C, Kalapothakis E. Characterization of the venom from the Brazilian Brown Spider Loxosceles similis Moenkhaus, 1898 (Araneae, Sicariidae). Toxicon 2005; 46:927-36. [PMID: 16289643 DOI: 10.1016/j.toxicon.2005.09.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2005] [Revised: 09/14/2005] [Accepted: 09/22/2005] [Indexed: 11/29/2022]
Abstract
Accidents caused by brown spiders (Loxosceles genus) are frequent in Brazil and are associated with dermonecrotic lesions and, eventually, systemic reactions that may be lethal. The major species implicated with human envenoming have been: L. intermedia, L. gaucho and L. laeta. In this study we characterized the venom from Loxosceles similis, a species of spider normally found inside caves. L. similis venom was characterized by two-dimensional gel electrophoresis and enzymatic activity (dermonecrosis and haemolysis). The lethal dose to mice and the capacity of commercial anti-serum to neutralize this venom were also analysed. The cross-reactivity with anti-venoms against L. intermedia, L. laeta and L. gaucho were studied. Our results showed that this venom was able to induce severe dermonecrotic lesions and showed the presence of the bacteria Clostridium septicum in association with the fangs. In addition, we have cloned the DNA coding for a dermonecrotic protein (LsD1), using the genomic DNA of L. similis. The deduced amino acid sequence showed a toxin of approximately 31.2 kDa with an estimated pI of 7.37 and sequence similar to LiD1, a protein from the dermonecrotic family of Loxosceles intermedia spider venom, a synanthropic species of medical importance.
Collapse
|
Research Support, Non-U.S. Gov't |
20 |
27 |
13
|
Pinto RM, Vicente JJ, Noronha D, Gonçalves L, Gomes DC. Helminth parasites of conventionally maintained laboratory mice. Mem Inst Oswaldo Cruz 1994; 89:33-40. [PMID: 7823817 DOI: 10.1590/s0074-02761994000100007] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
The spectrum of intestinal parasites present in the Swiss Webster, C57B1/6 and DBA/2 mice strains from different animal houses was identified and prevalences compared. Three parasites were observed during the course of this study, namely the cestode Vampirolepis nana (Siebold, 1852) Spasskii, 1954 (= Hymenolepis nana) and the nematodes Aspiculuris tetraptera (Nitzsch, 1821) Schultz, 1924 and Syphacia obvelata (Rudolphi, 1802) Seurat, 1916. The scope of this investigation has been widened to also include morphometric data on the parasites, to further simplify their identification, since the presence of helminths in laboratory animals is regarded as a restricting factor for the proper attainment of experimental protocols.
Collapse
|
|
31 |
23 |
14
|
Gonçalves L, Pinto RM, Vicente JJ, Noronha D, Gomes DC. Helminth parasites of conventionally maintained laboratory mice--II. Inbred strains with an adaptation of the anal swab technique. Mem Inst Oswaldo Cruz 1998; 93:121-6. [PMID: 9698855 DOI: 10.1590/s0074-02761998000100023] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Worm burdens recovered from inbred mice strains, namely C57Bl/6, C57Bl/10, CBA, BALB/c, DBA/2 and C3H/He, conventionally maintained in two institutional animal houses in the State of Rio de Janeiro, RJ, Brazil, were analyzed and compared, regarding their prevalences and mean intensities. Three parasite species were observed: the nematodes Aspiculuris tetraptera, Syphacia obvelata and the cestode Vampirolepis nana. A modification of the anal swab technique is also proposed for the first time as an auxiliary tool for the detection of oxyurid eggs in mice.
Collapse
|
Comparative Study |
27 |
17 |
15
|
Cameselle-Teijeiro J, Alberte-Lista L, Chiarelli S, Buriticá C, Gonçalves L, González-Cámpora R, Nogales FF. CD10 is a characteristic marker of tumours forming morules with biotin-rich, optically clear nuclei that occur in different organs. Histopathology 2008; 52:389-92. [DOI: 10.1111/j.1365-2559.2007.02911.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
|
17 |
17 |
16
|
Pinto GM, Gonçalves L, Gonçalves H, Graça F, Quental A, Fonseca I, Monteiro A. A case of lymphomatoid papulosis and Hodgkin's disease. J Am Acad Dermatol 1989; 21:1051-6. [PMID: 2681291 DOI: 10.1016/s0190-9622(89)70294-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Lymphomatoid papulosis is a unique paradoxic entity characterized by recurrent self-healing papulonodular lesions with histologic features of malignancy. Usually the disease has a protracted benign course; however, it can be associated with or evolve to a lymphoproliferative disorder. Thus "lymphoma-associated papulosis" represents the malignant end of a wide spectrum. We describe a case of a patient with lymphomatoid papulosis who developed Hodgkin's disease 8 years after the onset of skin lesions. Systemic chemotherapy achieved complete remission of Hodgkin's disease, but recurrent papulonodular lesions continued to form in the subsequent 18 months.
Collapse
|
Case Reports |
36 |
14 |
17
|
Pinto RM, Gonçalves L, Noronha D, Gomes DC. Worm burdens in outbred and inbred laboratory rats with morphometric data on Syphacia muris (Yamaguti, 1935) Yamaguti, 1941 (Nematoda, Oxyuroidea). Mem Inst Oswaldo Cruz 2001; 96:133-6. [PMID: 11285485 DOI: 10.1590/s0074-02762001000100016] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
Syphacia muris worm burdens were evaluated in the rat Rattus norvegicus of the strains Wistar (outbred), Low/M and AM/2/Torr (inbred), maintained conventionally in institutional animal houses in Brazil. Morphometrics and illustration data for S. muris recovered from Brazilian laboratory rats are provided for the first time since its proposition in 1935.
Collapse
|
|
24 |
13 |
18
|
Galvão-Teles A, Gonçalves L, Carvalho H, Monteiro E. Alterations of testicular morphology in alcoholic disease. Alcohol Clin Exp Res 1983; 7:144-9. [PMID: 6346916 DOI: 10.1111/j.1530-0277.1983.tb05428.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
Review |
42 |
13 |
19
|
Syrjänen K, Di Bonito L, Gonçalves L, Murjal L, Santamaria M, Mahovlic V, Karakitsos P, Onal B, Schmitt FC. Cervical cancer screening in Mediterranean countries: implications for the future. Cytopathology 2010; 21:359-67. [PMID: 20718841 DOI: 10.1111/j.1365-2303.2010.00795.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Prompted by feedback from the 34th European Congress of Cytology (ECC), the practice of including a special symposium in the programme was continued in the 35th ECC in Lisbon (2009) by arranging a satellite symposium entitled 'Cervical Cancer Screening in the Mediterranean Countries'. Because of the importance to the future of this discipline, it was felt appropriate to summarize the highlights of this symposium here. Cervical cancer prevention strategies in the countries participating in the symposium (Portugal, Spain, Italy, Croatia, Greece and Turkey) appear to be highly variable. As yet, none of these countries can demonstrate a fully implemented national screening programme, but all are in different phases of designing and/or setting up such a programme, which is important. At present, the time-honoured concept of cervical cancer prevention by Pap smear screening is under review, because prophylactic human papillomavirus (HPV) vaccines demonstrate a potential to prevent the vast majority (albeit not all) of cases of cervical cancer in the foreseeable future. Cervical cancer screening is still needed in this emerging era of HPV vaccination, but clearly the existing screening strategies must be modified to provide a cost-effective combination of vaccination and screening. If the currently evaluated new screening strategies, such as HPV testing followed by cytology triage, become a reality, there is the likelihood that the Pap test will have only a secondary role, subordinate to HPV testing. Supporters of this scenario claim that Pap test performance will deteriorate in vaccinated populations. Reduced positive predictive value (PPV), due to lower disease prevalence, is inevitable, however, and this would also affect HPV tests. Any decline in sensitivity and specificity depends on human performance, and as such is avoidable by taking appropriate preventive measures. As clinical cytologists, we should focus attention on minimizing the risk to the Pap test of falling sensitivity because of unfamiliarity with abnormal cells, and also of reduced specificity if the fear of missing significant disease leads to overcalling of benign abnormalities.
Collapse
|
Review |
15 |
12 |
20
|
Pinto J, Sousa CA, Gil V, Gonçalves L, Lopes D, do Rosário VE, Charlwood JD. Mixed-species malaria infections in the human population of São Tomé island, west Africa. Trans R Soc Trop Med Hyg 2000; 94:256-7. [PMID: 10974992 DOI: 10.1016/s0035-9203(00)90311-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
|
25 |
10 |
21
|
Zegre M, Barros J, Ribeiro IAC, Santos C, Caetano LA, Gonçalves L, Monteiro Resource FJ, Ferraz MP, Bettencourt A. Poly(DL-lactic acid) scaffolds as a bone targeting platform for the co-delivery of antimicrobial agents against S. aureus-C. albicans mixed biofilms. Int J Pharm 2022; 622:121832. [PMID: 35595042 DOI: 10.1016/j.ijpharm.2022.121832] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 05/11/2022] [Accepted: 05/12/2022] [Indexed: 10/18/2022]
Abstract
New strategies for the treatment of polymicrobial bone infections are required. In this study, the co-delivery of two antimicrobials by poly(D,L-lactic acid) (PDLLA) scaffolds was investigated in a polymicrobial biofilm model. PDLLA scaffolds were prepared by solvent casting/particulate leaching methodology, incorporating minocycline and voriconazole as clinically relevant antimicrobial agents. The scaffolds presented a sponge-like appearance, suitable to support cell proliferation and drug release. Single- and dual-species biofilm models of Staphylococcus aureus and Candida albicans were developed and characterized. S. aureus presented a higher ability to form single-species biofilms, compared to C. albicans. Minocycline and voriconazole-loaded PDLLA scaffolds showed activity against S. aureus and C. albicans single- and dual-biofilms. Ultimately, the cytocompatibility/functional activity of PDLLA scaffolds observed in human MG-63 osteosarcoma cells unveil their potential as a next-generation co-delivery system for antimicrobial therapy in bone infections.
Collapse
|
|
3 |
9 |
22
|
Santos AC, de Lima JJ, Botelho MF, Pacheco MF, Sousa P, Bernardo J, Ferreira N, Gonçalves L, Aguiar J, Providência LA, Pauwels EK. Cardiac lymphatic dynamics after ischemia and reperfusion--experimental model. Nucl Med Biol 1998; 25:685-8. [PMID: 9804050 DOI: 10.1016/s0969-8051(98)00037-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
ABSTRACT. The aim of the present study was to investigate the lymphatic cardiac circulation in an experimental model of ischemia plus reperfusion in mongrel dogs (Canis familiaris L). As radiotracer we used 0.2-0.25 ml (111 MBq) of 99mTc-Re2S7 colloid (+/-10 microm), injected subcapsullary below the second diagonal of the descending anterior ligated coronary artery with a special needle. A gamma-camera/Starport + DecStation were used for data acquisition. Four experimental groups with five animals each were established: G I = controls; G II = immediately after acute myocardial infarction (AMI); G III = late infarction (5 days after AMI); G IV = ischemia (90 min) + reperfusion. Four regions of interest (ROIs) were chosen: injection area (ZA), above (ZB), near right (ZD), and far right (ZC) from ZA. Mean disappearance times in ZA and dynamic parameters in the other ROIs were determined from activity/time curves drawn in each area, using homemade software. The results obtained seem to indicate that the methodology is appropriate to a detailed study of lymphatic drainage in pathological situations in animal models.
Collapse
|
|
27 |
9 |
23
|
Lavado JS, Gonçalves D, Gonçalves L, Sendino C, Valente E. General or regional? Exploring patients' anaesthetic preferences and perception of regional anaesthesia. ACTA ACUST UNITED AC 2019; 66:199-205. [PMID: 30635114 DOI: 10.1016/j.redar.2018.12.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 11/21/2018] [Accepted: 12/02/2018] [Indexed: 10/27/2022]
Abstract
INTRODUCTION AND OBJECTIVES Regional anaesthesia (RA) has gained popularity due to its numerous benefits and increasing safety. Yet, often patients refuse this procedure and prefer general anaesthesia (GA). This study aimed to investigate variables (demographic factors, safety perception of GA and RA, patients' fears, anxiety, and knowledge) related to patients' anaesthetic preference. MATERIAL AND METHODS Participants were patients aged 18 years or more proposed to an anaesthesia appointment for preoperative assessment. Patients completed a written questionnaire before meeting the anaesthesiologist. The questionnaire asked about their preferences, fears and perceptions about RA. RESULTS One hundred and 2patients agreed to participate. Mean age was 52.6±13.5 years, 57.8% were female and 44.5% had at least 12 years of education. Given the choice, 54.0% would prefer GA and 20.7% said they would refuse RA if proposed by the anaesthesiologist. Among patients who already experienced neuroaxial anaesthesia, 40.0% said they did not wish to repeat it. Patients who preferred GA over RA perceived GA to be safer than RA and expressed more anxiety towards being awake during surgery and more fear of feeling pain during surgery, of having back pain, and of needle puncture. Results also suggested that patients are unaware of RA's real risks and benefits. CONCLUSIONS Knowing patients' fears is essential for the anaesthesiologist address their patients' needs. Anaesthesiologists should work on improving general population perspective and knowledge about RA.
Collapse
|
|
6 |
6 |
24
|
Vasconcelos S, Marqueze E, Gonçalves L, Lemos L, Araújo L, Fischer FM, Moreno CRC. Morbidity among nursing personnel and its association with working conditions and work organization. ACTA ACUST UNITED AC 2014; 41 Suppl 1:3732-7. [PMID: 22317289 DOI: 10.3233/wor-2012-0087-3732] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
INTRODUCTION Work organization patterns and working conditions experienced by nursing personnel in the hospital settings may be associated to increased morbidity among these health workers. AIM To estimate the prevalence and factors associated with self-reported diseases among nursing personnel at the emergency hospital in Rio Branco/State of Acre, Brazil. METHODS A cross-sectional study was conducted involving 272 participants who answered a questionnaire including sociodemographic characteristics, working conditions, lifestyles, work ability, and a fatigue perception scale. The self-reported diseases in the 12 months prior to data collection were considered the dependent variable. RESULTS A total of 85.7% of the participants reported one or more diseases in the past 12 months. Most prevalent diseases were: musculoskeletal diseases (37.1%), digestive diseases (28.7%), mental disorders (28.3%), work injuries (27.9%), and respiratory diseases (26.8%). The following significant variables remained in the final model: high work demands (OR 2.69), reported fatigue (OR 3.59), night work (OR 6.55) and being a technician or nursing assistant (OR 4.23). CONCLUSIONS Variables related to working conditions and work organization were associated with the occurrence of reported diseases among nursing professionals. Health promotion measures at work require a comprehensive approach including the working conditions and the work organization.
Collapse
|
Research Support, Non-U.S. Gov't |
11 |
5 |
25
|
Restini CBA, Gonçalves L. Nitric Oxide and Related Aspects Underlying Angina. Open Cardiovasc Med J 2017; 11:33-46. [PMID: 28567132 PMCID: PMC5418930 DOI: 10.2174/1874192401711010033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 02/10/2017] [Accepted: 02/27/2017] [Indexed: 01/08/2023] Open
Abstract
Increased number of patients affected by metabolic syndrome (MS) has prompted the necessity of better understanding what is involved in such syndrome. Nevertheless, the establishment of promising therapies depends on the knowledge about the interaction of molecules within MS. In such context, Nitric Oxide (NO) emerges from a bulk of works relating its roles on aspects of MS, including cardiovascular diseases, their symptoms and comorbidities, which are thought to be triggered by similar sources. NO, nitric oxide synthase and enzymatic chains are keys for those disease and symptoms processes. NO has been separately described as part of hypertensive, ischemic and pain signaling. Although there are similar pathways likely shared for generating cardiovascular symptoms such angina, they are barely associated to NO in literature. The present review aims to clarify the patterns of NO alteration in metabolic syndrome directly concerned to cardiovascular symptoms, especially angina.
Collapse
|
Review |
8 |
4 |