22 results on '"Lopes IA"'
Search Results
2. FREQUÊNCIA E ATIVAÇÃO DE CÉLULAS CITOTÓXICAS ANTITUMORAIS SÃO BIOMARCADORES DE RESPOSTA E REMISSÃO LIVRE DE TRATAMENTO NA LEUCEMIA MIELOIDE CRÔNICA
- Author
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Binelli, LS, primary, Palma, LC, additional, Garcia, CAB, additional, Marani, LO, additional, Medeiros, M, additional, Lopes, IA, additional, Scheucher, PS, additional, Schiavinato, JL, additional, Traina, F, additional, Garibaldi, PMM, additional, Castro, FA, additional, Bassan, VL, additional, Duarte, GO, additional, Pagnano, KBB, additional, and Figueired-Pontes, LL, additional
- Published
- 2023
- Full Text
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3. EXPOSIÇÃO À MEDULA ÓSSEA JAK2V617F LEVA À DISFUNÇÃO DE CÉLULAS NK NORMAIS
- Author
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Lopes, IA, primary, Garcia, CAB, additional, Medeiros, M, additional, Costa, AFO, additional, Binelli, LS, additional, Schivianato, JL, additional, Scheucher, PS, additional, Palma, PVB, additional, Silva, CLA, additional, and Figueired-Pontes, LL, additional
- Published
- 2023
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4. IMBALANCED ACTIVATING AND INHIBITORY RECEPTORS ON CD56DIM NATURAL KILLER CELLS PREDICTS POOR OUTCOMES IN ACUTE MYELOID LEUKEMIA
- Author
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Costa, AFO, primary, Kuznetsova, V, additional, Marani, LO, additional, Lopes, IA, additional, Binelli, LS, additional, Scheucher, PS, additional, Schiavinato, JL, additional, Madeira, MIA, additional, Pagnano, KBB, additional, Duarte, BK, additional, Glória, ABF, additional, Rego, EM, additional, Traina, F, additional, Welner, R, additional, and Figueiredo-Pontes, LL, additional
- Published
- 2022
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5. ANTIVIRAL RESPONSE OF NATURAL KILLER CELLS IN EARLY STAGE OF COVID-19 PATIENTS
- Author
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Lopes, IA, primary, Marani, LO, additional, Costa, AFO, additional, Binelli, LS, additional, Monteiro, CMLB, additional, Tomazini, V, additional, Terra, POC, additional, Rós, FA, additional, Kashima, S, additional, Fonseca, BAL, additional, Santis, GC, additional, and Pontes, LLF, additional
- Published
- 2021
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6. NATURAL KILLER CELLS PHENOTYPE CORRELATES WITH TYROSINE KINASE INHIBITORS TREATMENT RESPONSE IN CHRONIC MYELOID LEUKEMIA PATIENTS
- Author
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Binelli, LS, primary, Costa, AFO, additional, Marani, LO, additional, Lopes, IA, additional, Traina, F, additional, Palma, LC, additional, Garibaldi, PMM, additional, and Figueiredo-Pontes, LL, additional
- Published
- 2021
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7. Associação entre haplotipo e mutação 985AG no Locus MCAD (Desidrogenase dos Acil-CoA de Cadeia Média) em Portugal
- Author
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Leandro, P, Lopes, IA, Tavares de Almeida, I, and Repositório da Universidade de Lisboa
- Abstract
Made available in DSpace on 2015-12-30T10:18:46Z (GMT). No. of bitstreams: 0 Previous issue date: 2002
- Published
- 2002
8. Evaluation of the Nasopalatine Canal of Patients With and Without Cleft Lip and Palate in CBCT Exams.
- Author
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Lopes IA, Chicrala GM, Soares MQS, and Capelozza ALA
- Subjects
- Humans, Retrospective Studies, Cross-Sectional Studies, Cone-Beam Computed Tomography methods, Maxilla diagnostic imaging, Cleft Lip diagnostic imaging, Spiral Cone-Beam Computed Tomography, Cleft Palate diagnostic imaging
- Abstract
Objective: To identify and compare the morphology and dimensions of the nasopalatine canal (NPC) of individuals with and without cleft lip and palate using Conical Beam Computed Tomography (CBCT) images and to relate the results to the type of cleft and tooth absences in the region., Setting: This is a cross-sectional, analytical study with a retrospective sample., Patients, Participants: 100 CBCT exams from patients with cleft lip and palate and 100 CBCT exams from patients without cleft lip and palate were used., Interventions: The NPC was evaluated for its morphology and measurements in the coronal, sagittal, and axial reformatting of CBCT exams., Results: It was obtained as a result that in the group of patients with a cleft, the shapes of funnel, banana, and needle of the NPC were more frequent than in the control group. Patients with cleft lip and palate had significantly a larger nasopalatine foramen and a larger NPC diameter, besides a significantly shorter NPC, compared to controls. In both groups, edentulous patients had less anterior maxillary bone thickness, when compared to patients with maxillary anterior teeth. Patients with clefts had a bone thickness buccal to the NPC less than in the control group., Conclusions: This study confirms the anatomical variability of NPC in patients with cleft lip and palate. This finding reinforces the need for thorough surgical planning of the anterior region of the maxilla, in CBCT exams, by the dentist., Competing Interests: Declaration of Conflicting InterestsThe authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
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- 2024
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9. Effects of photobiomodulation therapy (PBMT) on the management of pain intensity and disability in plantar fasciitis: systematic review and meta-analysis.
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Ferlito JV, Silva CF, Almeida JC, da Silva Lopes IA, da Silva Almeida R, Leal-Junior ECP, and De Marchi T
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- Adult, Humans, Pain Measurement, Pain drug therapy, Fasciitis, Plantar radiotherapy, Low-Level Light Therapy, Extracorporeal Shockwave Therapy
- Abstract
To review the effects of photobiomodulation therapy (PBMT) on pain intensity and disability in people with plantar fasciitis (PF) when compared with control conditions, other interventions, and adjunct therapies. Systematic searches were conducted in five database randomized controlled trials (RCT). We only included randomized controlled trials (RCTs) in adults with PF that compared PBMT to placebo, as well as RCTs that compared PBMT to other interventions; and as an adjunct to other therapies. The methodological quality and certainty were assessed through PEDro Scale and GRADE approach, respectively. The data of comparison were pooled and a meta-analysis was conducted when possible. Nineteen RCTs involving 1089 participants were included in this review. PBMT alone (MD = - 22.02 [- 35.21 to - 8.83]) or with exercise (MD = - 21.84 [- 26.14 to - 17.54]) improved pain intensity in short-term treatment. PBMT was superior to (extracorporeal shock wave therapy) EWST for relief of pain (MD = - 20.94 [- 32.74 to - 9.13]). In the follow-up, PBMT plus exercise had a superior to exercise therapy alone (MD = - 18.42 [- 26.48 to - 10.36]). PBMT may be superior to (ultrasound therapeutic) UST in medium- and long-term follow-ups for disability, but can be not clinically relevant. There is uncertainty that PBMT is capable of promoting improvement in disability. PBMT when used with adjuvant therapy does not enhance outcomes of interest. PBMT improves pain intensity with or without exercise. PBMT has been shown to be superior to ESWT for pain relief, but not superior to other interventions for pain intensity and disability. The evidence does not support PBMT as an adjunct to other electrotherapeutic modalities., (© 2023. The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature.)
- Published
- 2023
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10. Therapeutic lying: Brazilian speech and language therapists' point of view about a controversial communication strategy employed in the care for people with dementia.
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Lopes IA, Alves EV, and Beber BC
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- Humans, Brazil, Cross-Sectional Studies, Speech, Language Therapy methods, Communication, Speech Therapy methods, Dementia complications, Dementia therapy
- Abstract
Purpose: The objective of this research was to obtain the speech and language therapists' point of view about the use of therapeutic lying as a communication strategy in dementia care., Methods: The present research was a quantitative, qualitative, and descriptive cross-sectional study. Data was collected through an online survey with multiple choices and open answer questions., Results: The quantitative results indicated that the majority of the speech and language therapists have already used therapeutic lying as a communicative strategy and wish to learn more about it, considering the technique as relatively valid, ethical and adequate. The qualitative results indicated the reasons for the usage of the technique: to reassure the patient in case of agitation; to encourage engagement in therapy; to avoid stress-related to memory loss; to manage difficulty or refusal to eat; to manage difficulty or refusal for drug treatment; to prevent patients from leaving the building; to manage delirium, confusion and/or paranoia; to ensure safety; and for use when other strategies do not work., Conclusion: The majority of speech and language therapists use therapeutic lying in their clinical practice, taking into consideration the best interest of the person with dementia, although professionals recognize their lack of knowledge on the subject. They have considered the communication strategy as relatively ethical, valid and adequate. The article calls attention to the necessity of education and guidelines for speech and language therapists in the use of therapeutic lying among people with dementia.
- Published
- 2022
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11. Targeting aging mechanisms: pharmacological perspectives.
- Author
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Moskalev A, Guvatova Z, Lopes IA, Beckett CW, Kennedy BK, De Magalhaes JP, and Makarov AA
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- Aged, Animals, Humans, Signal Transduction, Aging genetics, Longevity
- Abstract
Geroprotectors slow down aging and promote healthy longevity in model animals. Although hundreds of compounds have been shown to extend the life of laboratory model organisms, clinical studies on potential geroprotectors are exceedingly rare, especially in healthy elders. This review aims to classify potential geroprotectors based on the mechanisms by which they influence aging. These pharmacological interventions can be classified into the following groups: those that prevent oxidation; proteostasis regulators; suppressors of genomic instability; epigenetic drugs; those that preserve mitochondrial function; inhibitors of aging-associated signaling pathways; hormetins; senolytics/senostatics; anti-inflammatory drugs; antifibrotic agents; neurotrophic factors; factors preventing the impairment of barrier function; immunomodulators; and prebiotics, metabiotics, and enterosorbents., Competing Interests: Declaration of interests J.P.M. is CSO of Centaura, a company that aims to prevent and reverse aging, an advisor for the Longevity Vision Fund, NOVOS, and YouthBio, as well as the founder of Magellan Science Ltd, a company providing consulting services in longevity science. The other authors declare no conflicts of interest., (Copyright © 2022 Elsevier Ltd. All rights reserved.)
- Published
- 2022
- Full Text
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12. Study Between Panoramic Radiography and Cone Beam-Computed Tomography in the Diagnosis of Ameloblastoma, Odontogenic Keratocyst, and Dentigerous Cyst.
- Author
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Cardoso LB, Lopes IA, Ikuta CRS, and Capelozza ALA
- Subjects
- Adolescent, Adult, Ameloblastoma pathology, Child, Cone-Beam Computed Tomography, Dentigerous Cyst pathology, Female, Humans, Male, Odontogenic Tumors pathology, Radiography, Panoramic, Young Adult, Ameloblastoma diagnostic imaging, Dentigerous Cyst diagnostic imaging, Odontogenic Tumors diagnostic imaging
- Abstract
Objective: To determine how the diagnosis may or may not be influenced by cone-beam computed tomography (CBCT), comparing the diagnostic hypotheses obtained using images of panoramic radiographs and CBCT in cases of ameloblastoma, odontogenic keratocyst, and dentigerous cyst., Study Design: Five cases were selected for each lesion. Panoramic radiographs and CBCT scans were analyzed by 15 dentists for the formulation of the diagnostic hypotheses. Two observers performed the analyses and measurement of qualitative and quantitative features of the lesions evaluated in the CBCT., Results: There was no statistically significant difference in correct diagnostic average between panoramic radiography and CBCT, but there was a significant difference in correct diagnostic average in the diagnosis of ameloblastoma using CBCT compared to panoramic radiography. Master's and PhD-level observers had greater correct diagnostic average in the diagnosis of odontogenic keratocyst using panoramic radiograph compared to specialists, with a significant difference., Conclusion: Cone-beam computed tomography images revealed that the ameloblastomas were greater in size and expansion compared to the odontogenic keratocyst and the dentigerous cysts. Ameloblastomas showed a higher incidence of multiloculated aspects compared to odontogenic keratocyst and dentigerous cysts. There were no differences between quantitative and qualitative features of odontogenic keratocyst and dentigerous cysts.
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- 2020
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13. The effect of facilitated tucking position during painful procedure in pain management of preterm infants in neonatal intensive care unit: a systematic review and meta-analysis.
- Author
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Gomes Neto M, da Silva Lopes IA, Araujo ACCLM, Oliveira LS, and Saquetto MB
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- Analgesics, Opioid adverse effects, Humans, Infant, Infant, Newborn, Infant, Premature, Intensive Care Units, Neonatal, Randomized Controlled Trials as Topic, Facilitated Tucking methods, Pain Management methods, Pain, Procedural therapy
- Abstract
We performed a systematic review and meta-analysis to investigate the effects of facilitated tucking position during painful procedure in pain management of preterm infants. We searched MEDLINE, PEDro, SciELO and the Cochrane Library (until June 2019) for randomized controlled trials. An α value ≤ 0.05 was considered significant. Heterogeneity among studies was examined with Cochran's Q and I
2 statistic, in which values greater than 40% were considered indicative of high heterogeneity and random-effects model was chosen. Analyses were performed with Review Manager 5.3. Fifteen studies met the eligibility criteria, including 664 preterm infants. The meta-analyses showed a significant reduction in pain of - 1.02 (95% CI - 1.7 to - 0.4, N = 216) during endotraqueal suctioning for participants in the facilitated tucking position group (FTPG) compared with routine care group. The meta-analyses showed a non-significant difference in pain - 0.3 (95% CI - 2.05 to - 1.4, N = 88) during heel stick for participants in the FTPG compared with oral glucose group. The meta-analyses showed a non-significant difference in pain for participants in the FTPG compared with oral opioid group 0.2 (95% CI - 1.4 to 1.8, N = 140).Conclusion: Facilitated tucking position may improve the pain during painful procedures.What is Known:• Exposure of premature babies to painful procedures is associated with changes in brain development, regardless of other factors.• Facilitated tucking reduces the expression of pain in premature infants.What is New:• Facilitated tucking position was efficient in pain management of preterm infants when compared to routine care.• Facilitated tucking compared to opioid or oral glucose did not achieve a significant reduction in pain intensity.- Published
- 2020
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14. Toxicological evaluation of 3-(4-Chlorophenylselanyl)-1-methyl-1H-indole through the bovine oocyte in vitro maturation model.
- Author
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Paschoal JDF, Lopes IA, Borges MA, Feijó AL, Simões LD, Segatto NV, Campos VF, Seixas F, Casaril AM, Savegnago L, Lenardão EJ, and Collares T
- Subjects
- Animals, Cattle, Cell Survival drug effects, Cells, Cultured, Female, Glutathione metabolism, Oocytes metabolism, Reactive Oxygen Species metabolism, In Vitro Oocyte Maturation Techniques, Indoles toxicity, Oocytes drug effects, Selenium Compounds toxicity
- Abstract
The development of new bioactive molecules based on the molecular hybridization has been widely explored. In line with this, reliable tests should be employed to give information about the toxicology of these new molecules. In this sense, the use of in vitro tests is a valuable tool, especially the in vitro maturation of oocytes (IVM), which is an efficient resource to discover the potential toxicity of synthetic molecules. Thus, the aim of the present study was to evaluate the toxicological effects of the selenium-containing indolyl compound 3-(4-Chlorophenylselanyl)-1-methyl-1H-indole (CMI), on different quality parameters of bovine oocytes through the IVM. Different concentrations of the CMI compound (0, 25, 50, 100, 200 μM) were supplemented during the in vitro maturation process. After, the oocyte maturation rate, glutathione (GSH) levels, reactive oxygen species (ROS) levels, membrane, and mitochondrial integrity were evaluated. The results showed that the lowest concentration of CMI induced the highest GSH production (P < 0.05), an important marker of cytoplasmic quality and maturation. All treatments increased ROS production in relation to non-supplementation (P < 0.05). In addition, oocyte maturation was reduced only with the highest concentration of CMI (P < 0.05). Supplementation with CMI did not impact mitochondrial activity, integrity and cell membrane. To our knowledge, this is the first study that evaluates CMI on the oocyte in vitro maturation process. Importantly, our results did not find any toxic effect of CMI on bovine oocytes. CMI was efficient for cytoplasmic maturation by promoting an increase in the intracellular levels of glutathione., (Copyright © 2019 Elsevier Ltd. All rights reserved.)
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- 2020
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15. Physical properties of films based on pectin and babassu coconut mesocarp.
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Da Silva DC, Lopes IA, Da Silva LJS, Lima MF, Barros Filho AKD, Villa-Vélez HA, and Santana AA
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- Algorithms, Biocompatible Materials chemistry, Mechanical Phenomena, Models, Theoretical, Permeability, Solubility, Spectrum Analysis, Steam, Chemical Phenomena, Cocos chemistry, Glycerol chemistry, Membranes, Artificial, Pectins chemistry
- Abstract
The objective of this research was to study the physical properties, water sorption, thermal and structure of films made from citrus pectin (CP), babassu coconut mesocarp (BCM) and glycerol (G). Seventeen formulations were prepared according to a central compound rotational design combining different proportions of the materials and evaluating the films produced according to their moisture contents, solubility, thicknesses and water vapor permeability. The results showed a direct relationship between the composition of the film and each physical property, providing films with unique mechanical characteristics and barrier properties. In the second phase, the films were reformulated, maintaining the proportions of CP and BCM constant and altering the G content. The results showed films with permeable structures, thus favoring the use of high drying temperatures (up to 70 °C) for the confection of films, without altering their physical and structural properties., (Copyright © 2019 Elsevier B.V. All rights reserved.)
- Published
- 2019
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16. Usefulness of Cone-Bean Computed Tomography Exams to Detect Foramen of Huschke in Diverse Age Group.
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Tucunduva RMA, Lopes IA, Shinohara AL, Lauris JRP, and Rubira-Bullen IRF
- Subjects
- Adolescent, Adult, Age Distribution, Aged, Anatomic Variation, Child, Female, Humans, Male, Middle Aged, Young Adult, Cone-Beam Computed Tomography, Temporal Bone anatomy & histology, Temporal Bone diagnostic imaging
- Abstract
The foramen of Huschke (FH) is present in the early stages of the temporal bone tympanic portion development. The literature shows that FH may persist in adult individuals and several authors acknowledge its clinical importance, reporting being associated with the dissemination of diseases. Some authors believe that FH presents importance in archeology and forensic situations.Considering that the identification of FH by conventional imaging methods is extremely impaired or impossible due to overlapping bone structures and that cone-bean computed tomography presents quality in the evaluation of this structure, the authors conducted this research to determine the FH prevalence and dimensions through the Invivo5 software, and correlated its size with age.The foramen was present in 19 scans (12.7%), 6 (8.8%) were present among male and 13 (15.8%) among female. The χ test was performed, with no statistically significant difference for gender and age. Considering the age, in individuals aged 7 to 18 years, 16.4% of persistent FH was found compared with 10.5% in individuals over 18 years of age. The diameter ranged from 2.58 to 3.28 mm. No correlation was found between size and age (p between 0.25 and 0.88).The authors conclude that the cone-bean computed tomography is an examination that allows the correct evaluation of the FH and, although the persistence of this unusual anatomical variation presents different frequencies in the different populations and age groups, it can have clinical consequences, so that the professionals who work in the area must be aware of its existence.
- Published
- 2019
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17. Study of the frequency and location of incidental findings of the maxillofacial region in different fields of view in CBCT scans.
- Author
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Lopes IA, Tucunduva RM, Handem RH, and Capelozza AL
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Child, Female, Humans, Male, Middle Aged, Cone-Beam Computed Tomography methods, Incidental Findings, Jaw Diseases diagnostic imaging, Tooth Diseases diagnostic imaging
- Abstract
Objectives: The aim of this study was to identify the type and frequency of incidental findings (IFs) in the maxillofacial region of CBCT scans with different sizes of field of view (FOV), and the clinical relevance of the findings was classified as requirement or not of monitoring, treatment or referral to a specialist., Methods: We analyzed 150 CBCT examinations, divided according to the size of the FOV into 3 groups: 6-cm maxilla, 6-cm mandible and 13-cm maxilla/mandible. The IFs were categorized into six areas: airway, temporomandibular joint (TMJ), bone, lesions of the jaws, teeth and soft-tissue calcifications., Results: The results showed 560 IFs that were found in 92% of the samples studied. A total of 225 IFs were found in examinations of the maxilla group, 99 findings in the mandible group and 236 findings in the maxilla/mandible group. The IFs were most frequent in the tooth zone (27.32%), followed by airways, soft-tissue calcifications, TMJ, bone, lesions of the jaw and other findings. We also found that 43.46% of the IFs did not need treatment or referral to another professional, 28.97% findings required the acquisition of new images for monitoring and 27.55% findings needed treatment or referral., Conclusions: The present study confirmed the high frequency of IFs in CBCT scans. It was concluded that it is necessary to interpret and report the total volume obtained in CBCT examinations and not only the purpose of the examination region.
- Published
- 2017
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18. Study of Genial Tubercles of Craniofacial Anomalies Individuals on Cone Beam Computed Tomography Scans.
- Author
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Lopes IA, Tucunduva RM, Capelozza AL, and Centurion BS
- Subjects
- Adolescent, Adult, Anatomic Variation, Cephalometry methods, Child, Cleft Lip diagnostic imaging, Cleft Palate diagnostic imaging, Glossoptosis diagnostic imaging, Humans, Incisor diagnostic imaging, Mandibulofacial Dysostosis diagnostic imaging, Middle Aged, Pierre Robin Syndrome diagnostic imaging, Retrognathia diagnostic imaging, Young Adult, Cone-Beam Computed Tomography methods, Craniofacial Abnormalities diagnostic imaging, Mandible diagnostic imaging
- Abstract
Purpose: Genial tubercles (GTs) are bony protuberances on the lingual aspect of the mandible symphysis, where genioglossus and geniohyoid muscles are inserted. In the literature, few papers report their real dimensions. Cleft lip and palate are craniofacial anomalies involving the maxilla, but the anatomical structures of the mandible can be altered when these have associated with the cleft, some syndrome. This study aimed to evaluate the GTs of 30 individuals and to make their measurements in cone beam computed tomography examinations., Methods: A sample of 30 individuals, 19 of them with cleft lip and palate, 6 individuals with Treacher Collins syndrome (TCS), and 5 individuals with Pierre Robin sequence, was used. The GTs were evaluated about the amount and the following measurements were performed: A--distance from the apex of the central incisors to GT, B--mandibular thickness in the region of GT, C-GT height, D-GT width, and E--distance from inferior border of mandible to GT., Results: The individuals presented since the absence of GTs to 3. The TCS group had the highest average of the measurements A, D, and E with statistical difference (P = 0.006) (P = 0.011) and (P = 0.017), respectively. The Pierre Robin sequence group had the highest average measurement of B and C, but there was no statistical difference., Conclusions: The difference in the measurements can be explained perhaps because individuals with TCS have glossoptosis and changes on retrognathic mandible, which would affect the position of the GT.
- Published
- 2016
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19. Evaluation of Interforaminal Mandible Region of Individuals With Pierre Robin Sequence and Treacher Collins Syndrome Through the Cone-Beam Computed Tomography.
- Author
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Tucunduva RM, Imada TS, Lopes IA, Rubira-Bullen IR, and de Carvalho IM
- Subjects
- Adolescent, Alveolar Process diagnostic imaging, Anatomic Variation, Female, Humans, Male, Mandible abnormalities, Radiography, Panoramic methods, Retrospective Studies, Cone-Beam Computed Tomography methods, Mandible diagnostic imaging, Mandibulofacial Dysostosis diagnostic imaging, Pierre Robin Syndrome diagnostic imaging
- Abstract
The Pierre Robin sequence (PRS) and the Treacher Collins syndrome (TCS) are conditions that cause significant abnormalities of jaw. This study was conducted in anticipation of evaluating the morphology of interforaminal region and identify the anatomic variations: anterior loop and mandibular incisive canal, in individuals with PRS and TCS by cone-beam computed tomography and compare them with individuals without craniofacial anomalies. By applying the t-test, the results showed no statistically significant difference, allowing to infer that there are no significant differences in interforaminal mandible morphology between groups and indicated that the prevalence and location of the studied anatomic variations are consistent with those described in literature.
- Published
- 2016
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20. H+-ATPase of crude homogenate of the outer mantle epithelium of Anodonta cygnea.
- Author
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Oliveira PF, Lopes IA, Barrias C, and Rebelo da Costa AM
- Subjects
- Adenosine Triphosphate metabolism, Adenosine Triphosphate pharmacology, Animals, Dose-Response Relationship, Drug, Enzyme Inhibitors pharmacology, Epithelium drug effects, Hydrogen-Ion Concentration, Macrolides pharmacology, Mollusca anatomy & histology, Mollusca drug effects, Nitrates pharmacology, Proton-Translocating ATPases antagonists & inhibitors, Temperature, Cell Extracts chemistry, Epithelium enzymology, Mollusca cytology, Mollusca enzymology, Proton-Translocating ATPases metabolism
- Abstract
The outer mantle epithelium of the freshwater bivalve, Anodonta cygnea, is responsible for the mineralisation of the shell. Under short circuit conditions, it generates a current that is due to the operation of an electrogenic proton pump located in the apical barrier of that epithelium. Bafilomycin A1 and Concanamycin A inhibited the short circuit current. The IC50 and maximum inhibition dose were 0.17 and 0.5 microM for Bafilomycin A1, and 0.7 and 5 microM for Concanamycin A. The present work was undertaken to further characterise V-type ATPase of the outer mantle cells. The V-ATPase enzymatic activity of crude homogenate, measured as the amount of inorganic phosphorous released, due to ATP hydrolysis, in the presence of Na2SO3 (200 mM) was found to be 4.6+/-1.1 micromol Pi/mg protein/h, at 27 degrees C, pH 7.0-7.4 and ATP 4.5-6.0 microM. Bafilomycin A1 and Concanamycin A inhibit the V-ATPase activity with an IC50 of 14 and 8 nmol mg(-1), respectively. Dicyclohexylcarbodiimide (DCCD; 100 mM) and NaNO3 (100 microM) inhibited the V-type ATPase in what it seems a non-specific manner and NEM (100 mM) was unable to do it. Bafilomycin A1 (10 microM) and Concanamycin A (10 microM), inhibited 50-60% of the total activity.
- Published
- 2004
- Full Text
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21. Recruitment maneuver and PEEP response in acute exacerbation of nonspecific interstitial pneumonia.
- Author
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Ferreira JC, Kairalla RA, Borges-Sobrinho JB, de Souza R, Schettino IA, and Carvalho CR
- Subjects
- Adult, Female, Humans, Lung Diseases, Interstitial complications, Respiratory Insufficiency etiology, Lung Diseases, Interstitial therapy, Positive-Pressure Respiration methods, Respiratory Insufficiency therapy
- Published
- 2004
22. [Primary lung neoplasm in a patient with breast cancer: report of a case].
- Author
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Lopes IA, da Silva EA, Meyer EC, Barbas Filho JV, Delmonte V, Barbas CS, and de Carvalho CR
- Subjects
- Adenocarcinoma, Bronchiolo-Alveolar surgery, Aged, Female, Humans, Lung Neoplasms surgery, Mastectomy, Neoplasms, Multiple Primary surgery, Radiography, Solitary Pulmonary Nodule diagnostic imaging, Thoracotomy, Adenocarcinoma, Bronchiolo-Alveolar pathology, Breast Neoplasms surgery, Lung Neoplasms pathology, Neoplasms, Multiple Primary pathology
- Abstract
A pulmonary nodule in a patient with a previous or concomitant diagnosis of extrathoracic malignancy is not always a synonym of metastasis. When dealing with breast cancer this is very important since the pulmonary lesion is usually not related to the primary tumor. We present a white, 69 years old patient, submitted to mastectomy four years earlier, in which a solitary pulmonary nodule was found, and after resection, the histopathologic examination disclosed a intravascular bronchoalveolar tumor. This is a rare lesion, here represented in an unusual way.
- Published
- 1991
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