1
|
Vicioni-Marques F, Carvalho MR, Raposo F, de Paula-Silva FWG, de Queiroz AM, Leal SC, Manton DJ, de Carvalho FK. Association of dental hypersensitivity and anxiety in children with molar-incisor hypomineralisation (MIH). Eur Arch Paediatr Dent 2023:10.1007/s40368-023-00803-4. [PMID: 37199855 DOI: 10.1007/s40368-023-00803-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 05/05/2023] [Indexed: 05/19/2023]
Abstract
AIM The objective of this study was to investigate whether dental hypersensitivity and dental fear were linked to the presence and severity of MIH. METHODS For this cross-sectional study, 1830 students between the ages of 6 and 12 years were recruited from four randomly selected schools. The Children's Fear Survey Schedule-Dental Subscale questionnaire was used to assess dental anxiety and fear. The children's self-reported dental hypersensitivity resulting from MIH was evaluated using the Wong-Baker Facial Scale and the Visual Analog Scale (VAS). RESULTS MIH was correlated with tooth hypersensitivity, particularly in severe cases. Dental fear was present in 17.4% of the children with MIH, but it was not associated with dental hypersensitivity, gender, or age. CONCLUSION No association was found between dental fear and dental hypersensitivity in children with MIH.
Collapse
Affiliation(s)
- F Vicioni-Marques
- Department of Pediatric Dentistry, University of São Paulo at School of Dentistry of Ribeirao Preto, Ribeirao Preto, Brazil
| | - M R Carvalho
- Department of Pediatric Dentistry, University of São Paulo at School of Dentistry of Ribeirao Preto, Ribeirao Preto, Brazil
| | - F Raposo
- Department of Pediatric Dentistry, University of Brasilia, Federal District, Brasilia, Brazil
| | - F W G de Paula-Silva
- Department of Pediatric Dentistry, University of São Paulo at School of Dentistry of Ribeirao Preto, Ribeirao Preto, Brazil
| | - A M de Queiroz
- Department of Pediatric Dentistry, University of São Paulo at School of Dentistry of Ribeirao Preto, Ribeirao Preto, Brazil
| | - S C Leal
- Department of Pediatric Dentistry, University of Brasilia, Federal District, Brasilia, Brazil
| | - D J Manton
- University of Groningen, UMCG, Centre for Dentistry and Oral Hygiene, Groningen, The Netherlands
| | - F K de Carvalho
- Department of Pediatric Dentistry, University of São Paulo at School of Dentistry of Ribeirao Preto, Ribeirao Preto, Brazil.
| |
Collapse
|
2
|
Carvalho MSN, Carvalho MR, Santos JAO, Barbosa ND, Melo LC, Costa FHM, Carvalho JPF, Messias HBG, Fonseca SA, Souza MA, Ferreira-Júnior GC, Lima RF, Costa JG, Cavalcanti MGS, Matos-Rocha TJ. Epidemiological, clinical and laboratory aspects of Angiostrongylus cantonensis infection: an integrative review. BRAZ J BIOL 2022; 82:e262109. [PMID: 36169525 DOI: 10.1590/1519-6984.262109] [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] [Received: 03/15/2022] [Accepted: 08/02/2022] [Indexed: 11/22/2022] Open
Abstract
This integrative literature review study analyzes the findings of the last 5 years of the parasite Angiostrongylus cantonensis. It is known that this nematode is found in the pulmonary arteries of rats, where it remains as a definitive host. From mice, the cycle spreads to animals, such as snails, which in contact with humans can trigger the disease. In humans, the parasite causes several neurological, abdominal manifestations and mainly meningitis. Based on the review of studies, its epidemiology shows worldwide distribution, although there are endemic cases for this parasite, such as asian countries. Laboratory findings generally showed altered CSF with turbidity, increased protein and eosinophilia, which generated meningeal signs in the patient, moreover MRI exams showed multiple alterations. Rare findings of the nematode in the eyeball, lung and signs of peritoneal inflammation were reported, which requires further studies to understand the whole pathophysiology. Finally, conservative treatment based on anthelmintics and anti-inflammatories brought good responses, although there are reports of deaths, which demonstrates the importance in the prevention and therapy of this disease.
Collapse
Affiliation(s)
- M S N Carvalho
- Universidade Estadual de Ciências da Saúde de Alagoas, Maceió, AL, Brasil
| | - M R Carvalho
- Universidade Estadual de Ciências da Saúde de Alagoas, Maceió, AL, Brasil
| | - J A O Santos
- Universidade Estadual de Ciências da Saúde de Alagoas, Maceió, AL, Brasil
| | - N D Barbosa
- Universidade Estadual de Ciências da Saúde de Alagoas, Maceió, AL, Brasil
| | - L C Melo
- Universidade Estadual de Ciências da Saúde de Alagoas, Maceió, AL, Brasil
| | - F H M Costa
- Universidade Estadual de Ciências da Saúde de Alagoas, Maceió, AL, Brasil
| | - J P F Carvalho
- Universidade Estadual de Ciências da Saúde de Alagoas, Maceió, AL, Brasil
| | | | - S A Fonseca
- Centro Universitário Cesmac, Alagoas, AL, Brasil
| | - M A Souza
- Centro Universitário Cesmac, Alagoas, AL, Brasil
| | - G C Ferreira-Júnior
- Instituto Federal de Educação, Ciência e Tecnologia do Acre, Xapuri, AC, Brasil
| | - R F Lima
- Secretaria de Saúde do Distrito Federal, Brasília, DF, Brasil
| | - J G Costa
- Empresa Brasileira de Pesquisa Agropecuária, Centro de Pesquisa Agropecuária dos Tabuleiros Costeiros, Rio Largo, AL, Brasil
| | | | - T J Matos-Rocha
- Universidade Estadual de Ciências da Saúde de Alagoas, Maceió, AL, Brasil.,Centro Universitário Cesmac, Alagoas, AL, Brasil
| |
Collapse
|
3
|
Oliveira IM, Carvalho MR, Fernandes DC, Abreu CM, Maia FR, Pereira H, Caballero D, Kundu SC, Reis RL, Oliveira JM. Modulation of inflammation by anti-TNF α mAb-dendrimer nanoparticles loaded in tyramine-modified gellan gum hydrogels in a cartilage-on-a-chip model. J Mater Chem B 2021; 9:4211-4218. [PMID: 33998627 DOI: 10.1039/d1tb00802a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Rheumatoid arthritis (RA) is an autoimmune and chronic inflammatory disease characterized by joint inflammation. Since the inflammatory condition plays an important role in the disease process, it is important to develop and test new therapeutic approaches that specifically target and treat joint inflammation. In this study, a human 3D inflammatory cartilage-on-a-chip model was established to test the therapeutic efficacy of anti-TNFα mAb-CS/PAMAM dendrimer NPs loaded-Tyramine-Gellan Gum in the treatment of inflammation. The results showed that the proposed therapeutic approach applied to the human monocyte cell line (THP-1) and human chondrogenic primary cells (hCH) cell-based inflammation system revealed an anti-inflammatory capacity that increased over 14 days. It was also possible to observe that Coll type II was highly expressed by inflamed hCH upon the culture with anti-TNF α mAb-CS/PAMAM dendrimer NPs, indicating that the hCH cells were able maintain their biological function. The developed preclinical model allowed us to provide more robust data on the potential therapeutic effect of anti-TNF α mAb-CS/PAMAM dendrimer NPs loaded-Ty-GG hydrogel in a physiologically relevant model.
Collapse
Affiliation(s)
- I M Oliveira
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal. and ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - M R Carvalho
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal. and ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - D C Fernandes
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal. and ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - C M Abreu
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal. and ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - F R Maia
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal. and ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - H Pereira
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal. and ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal and Orthopedic Department, Povoa de Varzim - Vila do Conde Hospital Centre, Portugal and Ripoll & De Prado Sport Clinic, Spain
| | - D Caballero
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal. and ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - S C Kundu
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal. and ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - R L Reis
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal. and ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - J M Oliveira
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal. and ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| |
Collapse
|
4
|
King K, Ticiani E, Sprícigo JFW, Carvalho MR, Mion B, Bertolini M, Contreras GA, Ribeiro ES. Dynamics of lipid droplets in the endometrium and fatty acids and oxylipins in the uterine lumen, blood, and milk of lactating cows during diestrus. J Dairy Sci 2021; 104:3676-3692. [PMID: 33455794 DOI: 10.3168/jds.2020-19196] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 10/19/2020] [Indexed: 12/20/2022]
Abstract
Our objective was to investigate the lipid content of uterus, blood plasma, and milk at early, mid, and late diestrus. Lactating cows (n = 30) had the estrous cycle and ovulation synchronized by administration of exogenous hormones. Cows were blocked by parity and assigned randomly to receive transcervical uterine flushing and biopsy on d 5 (early diestrus), 10 (mid diestrus) or 15 (late diestrus) of the estrous cycle. Flushing and endometrial biopsy were performed in the uterine horn ipsilateral to the corpus luteum. The recovered flushing was used for analyses of lipid composition by liquid chromatography-tandem mass spectrometry and the biopsy was used for investigation of lipid droplet abundance in endometrial cryosections using a neutral lipid fluorescent dye. In addition, blood and milk samples were collected from all cows on d 5, 10, and 15. All blood samples were used to measure the concentration of progesterone in plasma, and all milk samples were used to determine milk composition. Subsamples of blood plasma and milk were also used to evaluate the composition of fatty acids and oxylipins using the same methodology used for uterine flushing samples. The abundance of lipid droplets in the endometrium increased 1.9-fold from d 5 to 10, and 2-fold from d 10 to 15. Concentration of long-chain fatty acids and oxylipins in uterine flushing were, on average, 2.2 and 2.5 times greater in samples collected on d 15 compared with those collected on d 5 and 10. These differences were not observed in blood and milk, suggesting that accumulation of fatty acids and oxylipins in the uterus is regulated locally. In addition to concentration, the profile of individual fatty acids and oxylipins in uterine lumen changed substantially during diestrus. The main categories with increased abundance at late diestrus were mono- and polyunsaturated fatty acids, and oxylipins derived from arachidonic acid, dihomo-γ-linolenic acid, and docosahexaenoic acid. In conclusion, fatty acids and oxylipins accumulate in the uterine lumen during diestrus and might work as a mechanism to supply these lipids to the developing conceptus at late diestrus, when the onset of elongation occurs and substantial synthesis of biomass and cell signaling by lipid mediators are required.
Collapse
Affiliation(s)
- K King
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada, N1G 2W1
| | - E Ticiani
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada, N1G 2W1; Animal Sciences Research Program, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil, 91540-000
| | - J F W Sprícigo
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada, N1G 2W1
| | - M R Carvalho
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada, N1G 2W1
| | - B Mion
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada, N1G 2W1
| | - M Bertolini
- Animal Sciences Research Program, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil, 91540-000
| | - G A Contreras
- Department of Large Animal Clinical Sciences, Michigan State University, East Lansing, 48824
| | - E S Ribeiro
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada, N1G 2W1.
| |
Collapse
|
5
|
Pascottini OB, Van Schyndel SJ, Spricigo JFW, Carvalho MR, Mion B, Ribeiro ES, LeBlanc SJ. Effect of anti-inflammatory treatment on systemic inflammation, immune function, and endometrial health in postpartum dairy cows. Sci Rep 2020; 10:5236. [PMID: 32251312 PMCID: PMC7090035 DOI: 10.1038/s41598-020-62103-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 03/06/2020] [Indexed: 01/05/2023] Open
Abstract
Systemic inflammation (SI) is increasingly studied in several species because it may be central in many metabolic disturbances and be a risk factor for clinical disease. This proof-of-concept study evaluated the effects of the anti-inflammatory drug meloxicam on markers of SI and energy metabolism, polymorphonuclear neutrophil (PMN) function, and endometritis in clinically healthy postpartum dairy cows. Cows received meloxicam (0.5 mg/kg of body weight; n = 20) once daily for 4 days (10-13 days postpartum) or were untreated (n = 22). Blood samples were collected -7, 1, 3, 5, 7, 10, 11, 12, 13, 14, 18, 21, 28, and 35 days relative to calving to measure serum concentrations of metabolic and inflammatory markers. Function of peripheral blood PMN were evaluated at 5, 10, 14, and 21, and proportion of PMN in endometrial cytology were performed at 5, 10, 14, 21, 28 and 35 days postpartum. Meloxicam decreased serum haptoglobin from the second until the last day of treatment, and improved indicators of energy metabolism (lesser β-hydroxybutyrate and greater insulin-like growth factor-1 during treatment, and greater glucose at the end of treatment than control cows). This improved PMN function at 14 days postpartum, but the endometrial inflammatory status was not affected.
Collapse
Affiliation(s)
- O Bogado Pascottini
- Department of Population Medicine, University of Guelph, Guelph, Ontario, N1G 2W1, Canada.
| | - S J Van Schyndel
- Department of Population Medicine, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
| | - J F W Spricigo
- Department of Animal Biosciences, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - M R Carvalho
- Department of Animal Biosciences, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - B Mion
- Department of Animal Biosciences, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - E S Ribeiro
- Department of Animal Biosciences, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - S J LeBlanc
- Department of Population Medicine, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
| |
Collapse
|
6
|
Abstract
Cancer nanotechnology is a prolific field of research, where nanotools are employed to diagnose and treat cancer with unprecedented precision. Targeted drug delivery is fundamental for more efficient cancer treatments. For this, nanoparticles have been extensively used during the past few years in order to improve the specificity, selectivity and controlled release of drug delivery. It holds potential in minimizing systemic toxicity through the development of functionalized particles for targeted treatment. Among all the type of nanoparticles, dendrimers display several advantages, which make them ideal candidates for improved and targeted drug delivery in cancer research. Dendrimers can transport large amounts of drug into specific areas. In addition, they can be employed for monitoring the progress of the treatment process, with an unprecedented theranostic capability. Special emphasis is given to colorectal cancer and to the preferred employed strategies for producing drug-loaded/functionalized NPs for cancer therapy in the past few years.
Collapse
Affiliation(s)
- M R Carvalho
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal. and ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal and The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Guimarães, Portugal
| | - R L Reis
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal. and ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal and The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Guimarães, Portugal
| | - J M Oliveira
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal. and ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal and The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Guimarães, Portugal
| |
Collapse
|
7
|
Carvalho MR, Aboujaoude C, Peñagaricano F, Santos JEP, DeVries TJ, McBride BW, Ribeiro ES. Associations between maternal characteristics and health, survival, and performance of dairy heifers from birth through first lactation. J Dairy Sci 2020; 103:823-839. [PMID: 31677831 PMCID: PMC7094727 DOI: 10.3168/jds.2019-17083] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Accepted: 09/10/2019] [Indexed: 01/08/2023]
Abstract
The objective of this study was to investigate whether health, survival, and performance of dairy heifers from birth through first lactation are associated with parity and health status of their dams. Holstein heifers (n = 1,811) derived from artificial insemination were categorized as (1) daughters of primiparous cows that, consequently, were nonlactating heifers during gestation (Prim-NoL; n = 787); (2) daughters of multiparous cows that did not have any clinical diseases in the previous lactation (Mult-NoCD; n = 638); and (3) daughters of multiparous cows that had at least one clinical disease in the previous lactation (Mult-CD; n = 386). Clinical diseases of the multiparous dams included retained placenta, metritis, mastitis, lameness, and digestive and respiratory problems. Data collected for evaluation of daughters included genotypic and phenotypic characteristics at birth, morbidity, reproductive performance, and culling from birth through 305 d in milk of first lactation. Orthogonal contrasts were used to evaluate the effect of the parity of the dam (Prim-NoL vs. Mult-NoCD + Mult-CD) and the effect of clinical disease occurrence in the previous lactation among multiparous dams (Mult-NoCD vs. Mult-CD). Compared with daughters of multiparous cows, daughters of Prim-NoL were lighter at birth (36 vs. 41 kg), had greater genetic merit for production traits (e.g., genomic estimated breeding value for milk yield: 875 vs. 746 kg), were less likely to leave the herd (17 vs. 28%) and to lose pregnancy as a heifer (9 vs. 14%), calved earlier (703 vs. 711 d old), were less likely to have clinical diseases as a first lactation cow (30 vs. 37%), and had reduced performance in the first lactation when considering their genetic merit (e.g., 305-d yield of energy-corrected milk: 11,270 vs. 11,539 kg). Compared with daughters of Mult-NoCD, daughters of Mult-CD were less likely to have digestive problems as a heifer (17 vs. 27%) and clinical disease as a first lactation cow (32 vs. 42%), but were also more likely to leave the herd as a heifer (32 vs. 25%) even though genetic merit for production traits were similar (e.g., genomic estimated breeding value for milk: 744 vs. 749 kg). In conclusion, both parity and health status of the dam in the previous lactation were associated with morbidity, survival, and performance of their daughters from birth through 305 d in milk of the first lactation and might represent factors affecting developmental programming of dairy heifers in utero.
Collapse
Affiliation(s)
- M R Carvalho
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada, N1G 2W1
| | - C Aboujaoude
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada, N1G 2W1
| | - F Peñagaricano
- Department of Animal Sciences, University of Florida, Gainesville 32611
| | - J E P Santos
- Department of Animal Sciences, University of Florida, Gainesville 32611
| | - T J DeVries
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada, N1G 2W1
| | - B W McBride
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada, N1G 2W1
| | - E S Ribeiro
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada, N1G 2W1.
| |
Collapse
|
8
|
Pascottini OB, Carvalho MR, Van Schyndel SJ, Ticiani E, Spricigo JW, Mamedova LK, Ribeiro ES, LeBlanc SJ. Feed restriction to induce and meloxicam to mitigate potential systemic inflammation in dairy cows before calving. J Dairy Sci 2019; 102:9285-9297. [PMID: 31400891 DOI: 10.3168/jds.2019-16558] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 06/12/2019] [Indexed: 01/06/2023]
Abstract
Most dairy cows experience a transient decrease in feed intake in the 1 to 2 wk before calving, which has been associated with systemic inflammation (SI), indicated by increased blood haptoglobin (Hp) concentration. We aimed to characterize the association between prepartum decrease in feed intake and the onset of SI and, if present, the ability of meloxicam (MEL), a non-steroidal anti-inflammatory drug, to mitigate SI. Holstein cows (n = 45) were assigned to control (n = 13), feed restriction (FR) untreated (FR-U; n = 15), and FR treated with MEL (FR-T; n = 17) groups. Daily feed intake was measured from -22 d from expected parturition until 35 d postpartum. Control cows were fed ad libitum, whereas FR-U and FR-T cows were reduced to 60% of their average intake for 4 consecutive days (-15 to -12 d from expected calving). The FR-T cows received MEL (0.5 mg/kg of body weight) once daily for 4 consecutive days (-13 to -10 d from expected calving). Blood samples were collected -22, -15, -14, -13, -12, -10, -7, -5, -3, 0, 1, 3, 5, 7, 15, 22, and 35 d relative to calving to measure serum concentrations of total calcium, total protein, albumin, globulin, cholesterol, urea, glucose, gamma-glutamyl transferase, aspartate aminotransferase, glutamate dehydrogenase, β-hydroxybutyrate, nonesterified fatty acids, Hp, and insulin-like growth factor-1. Serum concentrations of lipopolysaccharide-binding protein were measured -22, -15, -14, -13, -12, and -10 d from expected calving. Simplified glucose tolerance tests were performed on -15, -12, -5, 1, and 5 d relative to calving. Mixed linear regression models were used to assess the effects of FR and MEL on each metabolite. The interaction between treatment group and blood sampling day was forced into each model. All models accounted for body condition score, parity, and the cow as a random effect. Nonesterified fatty acids concentrations in both the FR-U and FR-T groups significantly increased from the second until the last day of FR. Feed restriction increased urea concentrations compared with the control group on -14 d but decreased urea concentrations on -10 d from expected calving. Control cows had greater β-hydroxybutyrate concentrations compared with FR cows on 15, 21, and 35 d postpartum. For all other metabolites, no differences were found. This model of FR produced substantial fat mobilization but based on serum Hp and lipopolysaccharide-binding protein concentrations did not generate measurable SI; therefore, we were unable to evaluate the ability of MEL to mitigate SI.
Collapse
Affiliation(s)
- O Bogado Pascottini
- Department of Population Medicine, University of Guelph, Guelph, ON N1G 2W1, Canada.
| | - M R Carvalho
- Department of Animal Biosciences, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - S J Van Schyndel
- Department of Population Medicine, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - E Ticiani
- Department of Animal Biosciences, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - J W Spricigo
- Department of Animal Biosciences, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - L K Mamedova
- Department of Animal Sciences and Industry, Kansas State University, Manhattan 66506
| | - E S Ribeiro
- Department of Animal Biosciences, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - S J LeBlanc
- Department of Population Medicine, University of Guelph, Guelph, ON N1G 2W1, Canada
| |
Collapse
|
9
|
de Andrade P, Galo OA, Carvalho MR, Lopes CD, Carneiro ZA, Sesti-Costa R, de Melo EB, Silva JS, Carvalho I. 1,2,3-Triazole-based analogue of benznidazole displays remarkable activity against Trypanosoma cruzi. Bioorg Med Chem 2015; 23:6815-26. [PMID: 26476667 DOI: 10.1016/j.bmc.2015.10.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 09/25/2015] [Accepted: 10/05/2015] [Indexed: 01/29/2023]
Abstract
The current treatment of Chagas disease is based on the use of two drugs, nifurtimox and benznidazole, which present limited efficacy in the chronic stage of the disease and toxic side effects. Although some progress has been made in the development of new drugs to treat this disease, the discovery of novel compounds is urgently required. In this work we report the synthesis and biological evaluation of 1,2,3-triazole-based analogues of benznidazole. A small series of 27 compounds was successfully synthesized via microwave-assisted copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) and ruthenium-catalyzed azide-alkyne cycloaddition (RuAAC) from N-benzyl-2-azidoacetamide (1) and a set of commercial terminal alkynes. Analogues 24 (IC50 40 μM) and 28 (IC50 50 μM) showed comparable activities to benznidazole (IC50 34 μM) against trypomastigote form and analogue 15 (IC50 7 μM) was found to be the most active. Regarding the cytotoxicity assessment of the series, most compounds were not cytotoxic. This work shows that the designed strategy is efficiently capable of generating novel benzindazole analogues and reveals one analogue is more active than benznidazole.
Collapse
Affiliation(s)
- Peterson de Andrade
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. Café s/n, Ribeirão Preto, SP 14040-930, Brazil
| | - Oswaldo A Galo
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. Café s/n, Ribeirão Preto, SP 14040-930, Brazil
| | - Marcelo R Carvalho
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. Café s/n, Ribeirão Preto, SP 14040-930, Brazil
| | - Carla D Lopes
- Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, SP 14049-900, Brazil
| | - Zumira A Carneiro
- Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, SP 14049-900, Brazil
| | - Renata Sesti-Costa
- Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, SP 14049-900, Brazil
| | - Eduardo Borges de Melo
- School of Pharmacy, Western Parana State University, Rua Universitária, 2069, Cascavel, PR 85819-110, Brazil
| | - João S Silva
- Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, SP 14049-900, Brazil
| | - Ivone Carvalho
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. Café s/n, Ribeirão Preto, SP 14040-930, Brazil.
| |
Collapse
|
10
|
Junqueira GG, Carvalho MR, Andrade PD, Lopes CD, Carneiro ZA, Sesti-Costa R, Silva JS, Carvalho I. Synthesis andin vitroEvaluation of Novel Galactosyl-triazolo-benzenesulfonamides AgainstTrypanosoma cruzi. J BRAZIL CHEM SOC 2014. [DOI: 10.5935/0103-5053.20140158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
11
|
Lima FS, Bisinotto RS, Ribeiro ES, Greco LF, Ayres H, Favoreto MG, Carvalho MR, Galvão KN, Santos JEP. Effects of 1 or 2 treatments with prostaglandin F₂α on subclinical endometritis and fertility in lactating dairy cows inseminated by timed artificial insemination. J Dairy Sci 2013; 96:6480-8. [PMID: 23910554 DOI: 10.3168/jds.2013-6850] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 06/10/2013] [Indexed: 11/19/2022]
Abstract
The objectives of the current study were to investigate the efficacy of PGF₂α as a therapy to reduce the prevalence of subclinical endometritis and improve pregnancy per artificial insemination (P/AI) in cows subjected to a timed artificial insemination (AI) program. A total of 1,342 lactating Holstein dairy cows were allocated randomly at 25 ± 3 d in milk (DIM) to remain as untreated controls (control, n=454) or to receive a single PGF₂α treatment at 39 ± 3 DIM (1PGF, n=474) or 2 treatments with PGF(α at 25 ± 3 and 39 ± 3 DIM (2PGF, n=414). All cows were enrolled in the double Ovsynch program at 48 ± 3 DIM and were inseminated at 75 ± 3 DIM. A subset of 357 cows had uterine samples collected for cytological examination at 25 ± 3, 32 ± 3, and 46 ± 3 DIM to determine the percentage of polymorphonuclear leukocytes (PMNL). Subclinical endometritis was defined by the presence of ≥ 5% PMNL. Vaginal discharge score was evaluated at 25 ± 3 DIM and used to define the prevalence of purulent vaginal discharge. Body condition score was assessed at 25 ± 3 DIM. Pregnancy was diagnosed 32 d after AI and reconfirmed 28 d later. At 32 ± 3 DIM, the prevalence of subclinical endometritis was reduced by treatment with PGF₂α at 25 ± 3 DIM in 2PGF (control=23.5% vs. 1PGF=28.3% vs. 2PGF=16.7%); however, this benefit disappeared at 46 ± 3 DIM, and 14% of the cows remained with subclinical endometritis. One or 2 treatments with PGF₂α did not influence P/AI on d 32 or 60 after timed AI, which averaged 39.9 and 35.2%. Similarly, treatment with PGF₂α had no effect on pregnancy loss between 32 and 60 d of gestation (11.9%). Cows diagnosed with both purulent vaginal discharge and subclinical endometritis had the lowest P/AI and the highest pregnancy loss compared with those diagnosed with only 1 of the 2 diseases or compared with cows having no diagnosis of uterine diseases. Interestingly, subclinical endometritis depressed P/AI and increased pregnancy loss only when it persisted until 46 DIM. On d 32 after AI, cows not diagnosed with subclinical endometritis and those that resolved subclinical endometritis by 46 DIM had greater P/AI than those that remained with subclinical endometritis at 46 DIM (45.4 and 40.0 vs. 25.0%, respectively). Similar to P/AI, cows not diagnosed with subclinical endometritis and those that resolved subclinical endometritis by 46 DIM had less pregnancy loss than those with subclinical endometritis at 46 DIM (9.6 and 13.5 vs. 43.9%, respectively). One or 2 treatments with PGF₂α before initiation of the timed AI program were unable to improve uterine health, P/AI, and maintenance of pregnancy in lactating dairy cows. Cows diagnosed with both purulent vaginal discharge and subclinical endometritis had the greatest depressions in measures of fertility at first AI, particularly when subclinical endometritis persisted in the early postpartum period.
Collapse
Affiliation(s)
- F S Lima
- Department of Animal Sciences, University of Florida, Gainesville 32611
| | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Abstract
In trypanosomatids, the spliced leader RNA, or SL RNA, donates its 5' 39 nucleotides to mature nuclear mRNAs in a process termed trans-splicing. We have previously characterized the SL RNA gene from Trypanosoma cruzi and identified its transcription promoter, including a 14 nt proximal sequence element, or PSE, that binds a putative transcription factor and activates transcription of the gene. Herein, we describe establishment of a yeast one-hybrid system using the 14 nt PSE as bait, and use this system to select T. cruzi cDNAs encoding a putative transcription factor that activates transcription of the SL RNA gene. The cDNA was selected from a normalized library and encodes an approximately 45 kDa putative PSE promoter-binding protein, PPB1. PPB1 in vitro translated or overexpressed in and isolated from transformed E. coli, showed PSE-specific binding activity by electrophoretic mobility shift assays. Finally, overexpression of PPB1 in T. cruzi led to increased expression of the SL RNA gene as well as reporter genes in episomal constructs under the control of the SL RNA gene promoter. These observations suggest that PPB1 is a transcription factor that plays an important role in SL RNA gene expression.
Collapse
Affiliation(s)
- L M Wen
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond 23298-0678, USA
| | | | | | | | | |
Collapse
|
13
|
Vercesi AM, Carvalho MR, Aguiar MJ, Pena SD. Prevalence of Prader-Willi and Angelman syndromes among mentally retarded boys in Brazil. J Med Genet 1999; 36:498. [PMID: 10874644 PMCID: PMC1734381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
|
14
|
Carvalho MR, Sgarbieri VC. Relative importance of phytohemagglutinin (lectin) and trypsin-chymotrypsin inhibitor on bean (Phaseolus vulgaris L) protein absorption and utilization by the rat. J Nutr Sci Vitaminol (Tokyo) 1998; 44:685-96. [PMID: 9919488 DOI: 10.3177/jnsv.44.685] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [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: 11/27/2022]
Abstract
The main objective of this work was to perform a comparative study of the antinutritional and/or toxic properties of phytohemagglutinin and trypsin-chymotrypsin inhibitor extracted from the seed of a commercial cultivar of edible bean used in Brazil. Bean proteins were extracted in acidic salt solution and fractionated by dialysis and centrifugation, then freeze-dried. The total freeze-dried bean extract and the globulin or albumin protein fraction were resuspended in distilled water and heated (100 degrees C, 30 min) for inactivation of hemagglutinin. Diets were prepared with unheated bean protein fractions and heated ones (100% trypsin inhibitor activity, but 0% phytohemagglutinin activity). As a result, the inhibition of growth and poor dietary protein utilization were observed in rats fed diets containing unheated bean protein fractions, but not in rats fed diets containing heated fractions. It was thus assumed that phytohemagglutinin is the main antinutritional and toxic factor that in dry bean (Phaseolus) protein and that trypsin inhibitor (Bowman-Birk type) did not interfere with rat growth.
Collapse
Affiliation(s)
- M R Carvalho
- Instituto de Tecnologia de Alimentos, Campinas, SP, Brasil
| | | |
Collapse
|
15
|
Abstract
A putative promoter element responsible for transcription of the spliced leader (SL) gene of Trypanosoma cruzi was identified by overlapping deletion and linker scanning analyses of the upstream flanking sequences using the bacterial chloramphenicol acetyltransferase (CAT) gene as a reporter in transient transfections of cultured epimastigotes. Deletion or substitution of a proximal sequence element (PSE) between positions -53 and -40 relative to the transcription start point eliminated CAT gene expression. Comparison of SL genes from several strains of T. cruzi revealed two alternative sequence patterns for the putative SL PSE, both composed of a short run of purines followed by a run of pyrimidines. Moreover, an examination of these sequences supports the subdivision of T. cruzi isolates into two divergent groups. Double-stranded oligonucleotides containing the sequence of the PSE exhibited specific gel mobility shifts after incubation with T. cruzi nuclear extracts, suggesting that a transcription factor binds this site. Finally, experiments designed to increase the level of CAT expression from the SL promoter suggest that it is not a strong promoter in cultured T. cruzi epimastigotes.
Collapse
Affiliation(s)
- L R Nunes
- Department of Microbiology and Immunology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond 23298-0678, USA
| | | | | | | |
Collapse
|
16
|
Meindl A, Dry K, Herrmann K, Manson F, Ciccodicola A, Edgar A, Carvalho MR, Achatz H, Hellebrand H, Lennon A, Migliaccio C, Porter K, Zrenner E, Bird A, Jay M, Lorenz B, Wittwer B, D'Urso M, Meitinger T, Wright A. A gene (RPGR) with homology to the RCC1 guanine nucleotide exchange factor is mutated in X-linked retinitis pigmentosa (RP3). Nat Genet 1996; 13:35-42. [PMID: 8673101 DOI: 10.1038/ng0596-35] [Citation(s) in RCA: 324] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
X-linked retinitis pigmentosa (xlRP) is a severe progressive retinal degeneration which affects about 1 in 25,000 of the population. The most common form of xlRP, RP3, has been localised to the interval between CYBB and OTC in Xp21.1 by linkage analysis and deletion mapping. Identification of microdeletions within this region has now led to the positional cloning of a gene, RPGR, that spans 60 kg of genomic DNA and is ubiquitously expressed. The predicted 90 kD protein contains in its N-terminal half a tandem repeat structure highly similar to RCC1 (regulator of chromosome condensation), suggesting an interaction with a small GTPase. The C-terminal half contains a domain, rich in acidic residues, and ends in a potential isoprenylation anchorage site. The two intragenic deletions, two nonsense and three missense mutations within conserved domains provide evidence that RPGR (retinitis pigmentosa GTPase regulator) is the RP3 gene.
Collapse
Affiliation(s)
- A Meindl
- Abteilung Pädiatrische Genetik, Kinderpoliklinik der Universität München, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Meindl A, Carvalho MR, Herrmann K, Lorenz B, Achatz H, Lorenz B, Apfelstedt-Sylla E, Wittwer B, Ross M, Meitinger T. A gene (SRPX) encoding a sushi-repeat-containing protein is deleted in patients with X-linked retinitis pigmentosa. Hum Mol Genet 1995; 4:2339-46. [PMID: 8634708 DOI: 10.1093/hmg/4.12.2339] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.3] [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: 02/01/2023] Open
Abstract
X-linked retinitis pigmentosa (XLRP) is characterized by retinal degeneration with night blindness and progressive reduction of the visual fields. By linkage and deletion analysis a gene locus (RP3) has been mapped to the short arm of the X chromosome between the genes CYBB and OTC. Analysis of transcript in this region has revealed a gene which is abundantly expressed in human retina and encodes a putative membrane protein with significant homologies to short consensus repeat (SCR/sushi) domains known from selections and complement proteins. The gene termed SRPX (sushi-repeat-containing protein, x chromosome) is deleted in an RP patient who also suffers from chronic granulomatous disease and McLeod syndrome. A 75 kb deletion removing exon 1 of the gene was also found in two brothers of a second XLRP family. However, no further functionally significant mutations were detected by SSCP screening of all 10 exons in 34 unrelated XLRP patients nor by full length RT-PCR sequencing in two RP3 families. The role of this highly conserved retinal gene in the pathogenesis of RP therefore remains to be determined.
Collapse
Affiliation(s)
- A Meindl
- Abteilung Padiatrische Genetik, Kinderpoliklik der Ludwig-Maximilians- Unversitat Munchen
| | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Schindelhauer D, Achatz H, Strom TM, Ross M, Carvalho MR, Meindl A. Isolation and fine mapping of (CA)n repeats from the Xp11.23 and Xp11.4 region. Hum Mol Genet 1994; 3:1027. [PMID: 7951219 DOI: 10.1093/hmg/3.6.1027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Affiliation(s)
- D Schindelhauer
- Kinderpoliklinik, Universität München, Abteilung Pädiatrische Genetik, Germany
| | | | | | | | | | | |
Collapse
|
19
|
Carvalho MR, Krieger MA, Almeida E, Oelemann W, Shikanai-Yassuda MA, Ferreira AW, Pereira JB, Sáez-Alquézar A, Dorlhiac-Llacer PE, Chamone DF. Chagas' disease diagnosis: evaluation of several tests in blood bank screening. Transfusion 1993; 33:830-4. [PMID: 8236424 DOI: 10.1046/j.1537-2995.1993.331094054620.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 1.9] [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: 01/29/2023]
Abstract
Blood transfusion is one of the principal routes of transmission of Chagas' disease, a major endemic disease in Latin America. Methods for blood screening are not accurate and may yield false results that lead to high social and economic costs. This study compares two methods of diagnosing Chagas' disease (indirect immunofluorescence and hemagglutination) and several enzyme-linked immunosorbent assays (ELISAs) with regard to specificity and sensitivity, by using human sera with known serologic and parasitologic characteristics, as well as samples with discrepant results on conventional serologic tests. An ELISA using recombinant antigens showed no cross-reactivity with sera that were positive for other diseases. All evaluated ELISAs performed well, and their use may lead to a reduction of more than 50 percent in the number of discordant sera. Further improvements are needed in view of the complexity of the serologic diagnosis of Chagas' disease.
Collapse
Affiliation(s)
- M R Carvalho
- Fundação Pró-Sangue Hemocentro de São Paulo, Brazil
| | | | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Sarinho SW, da Silva GA, Magalhães M, Carvalho MR. A study of the importance of the enterotoxigenic E. coli in children with acute diarrhoea in Recife, Brazil. J Trop Pediatr 1993; 39:304-6. [PMID: 8271339 DOI: 10.1093/tropej/39.5.304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Even today acute diarrhoea is a major cause of morbidity and mortality in young children. It is a serious public health problem in less-developed countries, primarily in households whose income is low. As such, it is one of the main causes of death, affecting the undernourished in particular. The potential enteropathogenic agents are distributed universally. However, there is a major difference in the prevalence, according to the areas and the characteristics of the population groups which were studied. In Brazil, since the 1970s, our attention has been drawn to the importance of the classic enteropathogenic strains of E. coli (EPEC) in the aetiology of diarrhoeal diseases, primarily those present in weaned infants in inner city neighbourhoods. On the other hand, Guerrant and co-workers, and Queiroz and co-workers found significant percentages of isolated colonies of enterotoxigenic coli (ETEC) in the stool material of children with symptoms of acute diarrhoea. In rural areas of less-developed countries the incidence of episodes of ETEC provoking diarrhoea is estimated to be between five and ten per person/year. Due to the social and medical gravity of acute diarrhoea, and to the lack of studies dealing with the aetiopathogenic role of the strains of ETEC in our area, we decided to analyse the frequency of isolation of ETEC in children with and without diarrhoea who were attending the out-patient department of the Instituto Materno Infantil de Pernambuco/IMIP.
Collapse
|
21
|
Krieger MA, Almeida E, Oelemann W, Lafaille JJ, Pereira JB, Krieger H, Carvalho MR, Goldenberg S. Use of recombinant antigens for the accurate immunodiagnosis of Chagas' disease. Am J Trop Med Hyg 1992; 46:427-34. [PMID: 1575289 DOI: 10.4269/ajtmh.1992.46.427] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.3] [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: 12/27/2022] Open
Abstract
We tested two Trypanosoma cruzi recombinant antigens in a diagnostic test for Chagas' disease. These antigens were a cytoplasmic repetitive antigen (CRA) and a flagellar repetitive antigen (FRA). The results indicate that the recombinant antigens give better results when used in combination than when used separately, and that the removal of the beta-galactosidase portion of the recombinant fusion proteins increases the specificity of the diagnostic test for Chagas' disease. In addition, a direct enzyme-linked immunosorbent assay (ELISA), which involves the use of peroxidase-labeled antigens to detect the immune-complexes, was developed and compared with a conventional ELISA. The results indicate that the recombinant (CRA+FRA) ELISA is better than the conventional ELISA in the diagnosis of Chagas' disease, providing 100% specificity and sensitivity in all sera tested to date. The recombinant ELISA was compared with conventional serologic tests (hemagglutination and immunofluorescence) for Chagas' disease diagnosis, and the results show that the recombinant ELISA does not give rise to false-positive results that are observed with the two other tests. The use of the recombinant ELISA should be useful in the prevention of transmission of Chagas' disease by blood transfusions.
Collapse
Affiliation(s)
- M A Krieger
- Fundacao Oswaldo Cruz, Departamento de Bioquimica e Biologia Molecular, Rio de Janeiro, Brazil
| | | | | | | | | | | | | | | |
Collapse
|
22
|
Carvalho MR, Müller B, Rötzer E, Berninger T, Kommerell G, Blankenagel A, Savontaus ML, Meitinger T, Lorenz B. Leber’s Hereditary Optic Neuroretinopathy and the X-Chromosomal Susceptibility Factor: No Linkage to DXS7. Hum Hered 1992; 42:316-20. [PMID: 1360941 DOI: 10.1159/000154089] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Leber's hereditary optic neuroretinopathy (LHON) was the first human disease for which mitochondrial inheritance was demonstrated. Analysis of genealogies, however, suggests the existence of an interacting X-linked factor, and linkage to DXS7 was recently described. We tested this location in four LHON families, with DXS7 and two flanking markers, OTC and DXS426. We found recombinations with DXS7 in two families and with DXS426 in one. The two point lod scores to DXS7 were negative with all the allele frequencies for the X-linked factor tested (q = 0.5; 0.35; 0.05).
Collapse
Affiliation(s)
- M R Carvalho
- Abteilung für pädiatrische Genetik, Universität München, BRD
| | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Sarinho E, Pontual M, Carvalho MR, da Costa MJ. [Post-vaccination tuberculin response using PPD derived from BCG]. Bol Oficina Sanit Panam 1991; 111:402-5. [PMID: 1837717] [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] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The aim of this study was to compare the biological response obtained with two tuberculin tests--PPD-RT 23 and PPD derived from BCG--among children already vaccinated with the Calmette-Guérin bacillus. Results varied widely, and the differences observed were statistically significant. This shows the need for additional studies to assess the sensitivity, specificity and predictive value of both tests.
Collapse
Affiliation(s)
- E Sarinho
- Universidade Federal de Pernambuco, Departamento Materno-Infantil, Brasil
| | | | | | | |
Collapse
|
24
|
Almeida E, Krieger MA, Carvalho MR, Oelemann W, Goldenberg S. Use of recombinant antigens for the diagnosis of Chagas disease and blood bank screening. Mem Inst Oswaldo Cruz 1990; 85:513-7. [PMID: 2152209 DOI: 10.1590/s0074-02761990000400023] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- E Almeida
- Instituto Oswaldo Cruz, Departamento de Bioquímica e Biologia Molecular, Rio de Janeiro, Brasil
| | | | | | | | | |
Collapse
|
25
|
Mesquita-Guimarães J, Ramos S, Tavares MR, Carvalho MR. A double-blind clinical trial with a lotion containing 5% benzoyl peroxide and 2% miconazole in patients with acne vulgaris. Clin Exp Dermatol 1989; 14:357-60. [PMID: 2532986 DOI: 10.1111/j.1365-2230.1989.tb02584.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The therapeutic efficacy of a lotion containing 5% benzoyl peroxide and 2% miconazole was compared with 5% benzoyl peroxide alone, in a double-blind, randomized, parallel study. Thirty patients with comedonal or inflammatory acne vulgaris were enrolled. The medications were applied once daily during the first week, and then twice daily for the rest of the trial (45 days). In patients with comedonal acne there was no difference in the effect of the two therapies. In patients with inflammatory acne the percentage reduction of the number of lesions on Day 30 was significantly higher in the benzoyl peroxide plus miconazole group (66%) compared to benzoyl peroxide alone (37%). At Day 45 there was a trend favouring the combined therapy but the difference was not significant. There were no significant differences in the adverse reactions reported by the two groups of patients (erythema, itching or moderate exfoliation).
Collapse
|
26
|
de Mendonça JT, Carvalho MR, da Costa RK, Franco Filho E, de Barros ML, Costa GB, Almeida ML, Souza AO. [Endomyocardial fibrosis: surgical treatment]. Arq Bras Cardiol 1989; 52:13-7. [PMID: 2684103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The authors analyse the experience acquired for surgical treatment of endomyocardiofibrosis. Among the 15 patients submitted to the operation, nine had the biventricular form, four had the disease in the right ventricle and two only in the left ventricle. The surgery consisted of endocardioectomy of the ventricles (RV--04,LV--02, bilateral--08) and replacement of the diseased atrioventricular valves (mitral--02, tricuspid--06, mitral and tricuspid--07). In one patient there was severe obstruction of the anterior descending artery and a bypass was done. Three patients had associated rheumatic mitral stenosis. There was one early operative death and three late deaths (respectively 13.34 and 37 months later). Two patients required re-operation. The first one, 33 months later, to replace the mitral valve which had been preserved in the first procedure, and the second, 12 months later, who presented ventricular septal defect secondary to rupture of the weak septum. Of all the patients who underwent surgery, 11 survived and all, except one, have had a good course. The detailed analysis of this series permitted us to conclude that: 1st--the general use of the bidimensional echocardiography in high risk patients, allows early diagnosis in a greater number of them; 2nd, the surgery must be early to avoid cardiac and extracardiac injury due to the disease; 3rd--a low profile valve must be used; 4th--to this moment there have been no signs of recurrence; 5th--surgical treatment appears to improve the course of this terrible disease.
Collapse
|
27
|
de Mendonça JT, Carvalho MR, Costa RK, Franco Filho E. Coarctation of the aorta: a new surgical technique. J Thorac Cardiovasc Surg 1985; 90:445-7. [PMID: 4033183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We developed a new surgical technique to treat coarctation of the aorta. It consists of an aortoplasty in which the left subclavian artery is transected, opened longitudinally, and sutured to the coarctated segment so as to correct the narrowing and also maintain blood flow through the left upper limb.
Collapse
|
28
|
De Mendonça JT, Carvalho MR, Da Costa RK, Franco Filho E. [Aortic coarctation. A new surgical technic]. Arq Bras Cardiol 1985; 44:181-3. [PMID: 4091710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
|