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Koziaeva VV, Alekseeva LM, Uzun MM, Leão P, Sukhacheva MV, Patutina EO, Kolganova TV, Grouzdev DS. Biodiversity of Magnetotactic Bacteria in the Freshwater Lake Beloe Bordukovskoe, Russia. Microbiology (Reading) 2020. [DOI: 10.1134/s002626172003008x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Cardoso Louro H, Fonte Boa A, Lencastre L, Leão P, Vilaça J. Laparoscopic colorectal resection for a giant colonic diverticulum - a video vignette. Colorectal Dis 2019; 21:246-247. [PMID: 30496628 DOI: 10.1111/codi.14505] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 11/26/2018] [Indexed: 02/08/2023]
Affiliation(s)
- H Cardoso Louro
- Surgery Department of Hospital da Luz Arrábida, Vila Nova de Gaia, Portugal.,Surgery Department of Centro Hospitalar Vila Nova de Gaia/Espinho, Vila Nova de Gaia, Portugal
| | - A Fonte Boa
- Surgery Department of Hospital da Luz Arrábida, Vila Nova de Gaia, Portugal.,Anesthesiology Department of Centro Hospitalar Vila Nova de Gaia/Espinho, Vila Nova de Gaia, Portugal
| | - L Lencastre
- Surgery Department of Hospital da Luz Arrábida, Vila Nova de Gaia, Portugal.,Surgery Department of Instituto Português de Oncologia do Porto Francisco Gentil, Porto, Portugal
| | - P Leão
- Surgery Department of Hospital de Braga, Braga, Portugal
| | - J Vilaça
- Surgery Department of Hospital da Luz Arrábida, Vila Nova de Gaia, Portugal
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Pinto JP, Sousa M, Viana C, Goulart A, Nogueira F, Martins S, Figueiredo N, Leão P. TAMIS and ERUS in the treatment of a para-rectal tumor - a video vignette. Colorectal Dis 2018; 20:644-645. [PMID: 29673073 DOI: 10.1111/codi.14222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 03/19/2018] [Indexed: 02/08/2023]
Affiliation(s)
- J P Pinto
- Department of General Surgery, Hospital de Braga, Braga, Portugal
| | - M Sousa
- Department of General Surgery, Hospital de Braga, Braga, Portugal
| | - C Viana
- Department of General Surgery, Hospital de Braga, Braga, Portugal
| | - A Goulart
- Department of General Surgery, Hospital de Braga, Braga, Portugal.,Life and Health Sciences Research Institute, ICVS/3Bs, Universidade do Minho, Braga, Portugal
| | - F Nogueira
- Department of General Surgery, Hospital de Braga, Braga, Portugal
| | - S Martins
- Department of General Surgery, Hospital de Braga, Braga, Portugal.,Life and Health Sciences Research Institute, ICVS/3Bs, Universidade do Minho, Braga, Portugal
| | - N Figueiredo
- Digestive Cancer Unit, Fundação Champalimaud, Champalimaud Clinical Center, Braga, Portugal
| | - P Leão
- Department of General Surgery, Hospital de Braga, Braga, Portugal.,Life and Health Sciences Research Institute, ICVS/3Bs, Universidade do Minho, Braga, Portugal
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Viana C, Cristino H, Veiga C, Leão P. Splenic torsion, a challenging diagnosis: Case report and review of literature. Int J Surg Case Rep 2018; 44:212-216. [PMID: 29529542 PMCID: PMC5928290 DOI: 10.1016/j.ijscr.2018.02.032] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 02/07/2018] [Accepted: 02/22/2018] [Indexed: 12/14/2022] Open
Abstract
INTRODUCTION Wandering spleen is an unusual condition characterized by hypermobility of the spleen. This is a rare clinical entity and it's more common in childhood under 1 year of age and in third decade of life. In this second peak, it's more frequent in females. Clinical manifestations can vary from asymptomatic to abdominal emergency. Treatment is often surgical. PRESENTATION OF CASE We presented a case report of splenic torsion from our hospital and a review of cases described in literature. This is a 40 year-old woman with complaints of upper abdominal pain associated with nausea and vomiting. A marked tenderness and a palpable abdominal mass on left hypochondrium were found as well as a slight increase in inflammatory parameters. A CT was performed and demonstrated findings compatible with splenic torsion. Surgery was performed doing laparoscopic splenectomy; Review of literature was made using the keyword combination: "wandering spleen". The research resulted in 451 articles. DISCUSSION The physical examination and CT are fundamental for diagnosis. Surgery was performed and laparoscopic splenectomy was made because infarcted spleen; about the review of literature, the majority of patients were female and the average age at the time of diagnosis was 25.2 years. 69.5% needed splenectomy and 78.6% of surgeries were laparotomic. CONCLUSION Splenic torsion is a rare but important differential diagnosis in patients presenting with acute abdomen. Diagnosis should be made promptly before development of life-threatening complications. Surgery is often necessary and splenopexy or splenectomy can be done.
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Affiliation(s)
- C Viana
- Department of General Surgery, de Braga Hospital, Braga, Portugal.
| | - H Cristino
- Department of General Surgery, de Braga Hospital, Braga, Portugal
| | - C Veiga
- Department of General Surgery, de Braga Hospital, Braga, Portugal
| | - P Leão
- Department of General Surgery, de Braga Hospital, Braga, Portugal; Surgical Sciences Research Domain, Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, de Gualtar Campus, 4709-057 Braga, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal
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Silva PA, Goulart A, Sousa M, Rios H, Atallah S, Leão P. Transanal total mesorectal excision with triangle rules: a road map to prevent injuries. Tech Coloproctol 2017; 21:819-820. [DOI: 10.1007/s10151-017-1698-5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 09/19/2017] [Indexed: 11/30/2022]
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Rodrigues AJ, Leão P, Pêgo JM, Cardona D, Carvalho MM, Oliveira M, Costa BM, Carvalho AF, Morgado P, Araújo D, Palha JA, Almeida OFX, Sousa N. Mechanisms of initiation and reversal of drug-seeking behavior induced by prenatal exposure to glucocorticoids. Mol Psychiatry 2012; 17:1295-305. [PMID: 21968930 DOI: 10.1038/mp.2011.126] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Stress and exposure to glucocorticoids (GC) during early life render individuals vulnerable to brain disorders by inducing structural and chemical alterations in specific neural substrates. Here we show that adult rats that had been exposed to in utero GCs (iuGC) display increased preference for opiates and ethanol, and are more responsive to the psychostimulatory actions of morphine. These animals presented prominent changes in the nucleus accumbens (NAcc), a key component of the mesolimbic reward circuitry; specifically, cell numbers and dopamine (DA) levels were significantly reduced, whereas DA receptor 2 (Drd2) mRNA expression levels were markedly upregulated in the NAcc. Interestingly, repeated morphine exposure significantly downregulated Drd2 expression in iuGC-exposed animals, in parallel with increased DNA methylation of the Drd2 gene. Administration of a therapeutic dose of L-dopa reverted the hypodopaminergic state in the NAcc of iuGC animals, normalized Drd2 expression and prevented morphine-induced hypermethylation of the Drd2 promoter. In addition, L-dopa treatment promoted dendritic and synaptic plasticity in the NAcc and, importantly, reversed drug-seeking behavior. These results reveal a new mechanism through which drug-seeking behaviors may emerge and suggest that a brief and simple pharmacological intervention can restrain these behaviors in vulnerable individuals.
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Affiliation(s)
- A J Rodrigues
- Life and Health Sciences Research Institute, School of Health Sciences, University of Minho, Braga, Portugal
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Silva R, Mesquita A, Bessa J, Sousa J, Sotiropoulos I, Leão P, Almeida O, Sousa N. Lithium blocks stress-induced changes in depressive-like behavior and hippocampal cell fate: The role of glycogen-synthase-kinase-3β. Neuroscience 2008; 152:656-69. [DOI: 10.1016/j.neuroscience.2007.12.026] [Citation(s) in RCA: 122] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2007] [Revised: 12/06/2007] [Accepted: 12/12/2007] [Indexed: 02/07/2023]
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Abstract
Elevated glucocorticoids, during pregnancy, alter emotionality and increase propensity to drug abuse later in life, albeit through substrates and mechanisms are largely unknown. In this study, we examined whether antenatal glucocorticoid exposure induces enduring structural changes in the nucleus accumbens (NAcc), an important relay point in the reward limbic circuitry. To this end, rat dams were exposed to the synthetic glucocorticoid dexamethasone (DEX) on days 18 and 19 of gestation, and stereological tools were used to assess the total volume of, and neuronal numbers in, the NAcc, as well as the density of mesencephalic dopaminergic inputs from the ventral tegmental area (VTA) to the NAcc in their adult offspring. Further, we used measures of bromodeoxyuridine incorporation into NAcc cells to examine whether DEX-induced effects on cell proliferation represent another mechanism through which glucocorticoids alter the structure of mesolimbic pathways and might influence addictive behavior. Our studies show that exposure to DEX during late gestation results in significantly reduced volumes and cell numbers in the NAcc. The latter measure correlated strongly with a reduced rate of cell proliferation in DEX-exposed animals. Moreover, the treatment resulted in a decreased number of cells expressing tyrosine hydroxylase in the VTA and an impoverished dopaminergic innervation of the NAcc. These observations, which identify glucocorticoid-sensitive structures and neurochemical targets within the developing "reward pathway," pave way for future studies designed to understand how early life events can predispose individuals for developing drug dependence in adolescent and adult life.
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Affiliation(s)
- P Leão
- Life and Health Sciences Research Institute ICVS, University of Minho, Campus de Gualtar, Braga, Portugal
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