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Boudaoud N, Line A, Pons M, Lefebvre F, Bouche Pillon MA, Francois C, Poli Merol ML. [Secondary megaureter: A rare complication of Deflux ® endoscopic management of vesicoureteral reflux in children]. Arch Pediatr 2017; 24:249-253. [PMID: 28161229 DOI: 10.1016/j.arcped.2016.12.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 12/05/2016] [Indexed: 11/27/2022]
Abstract
Endoscopic management is the gold standard for symptomatic low-grade vesicoureteral reflux (VUR) in children. Deflux® (hyaluronic acid/dextranomer) injection is highly effective and has very few complications. We report on two cases of secondary megaureter after Deflux® injections. In the first case, a boy presented with Grade 4 VUR. He received a bilateral Deflux® injection with a total of three syringes. The postoperative ultrasound was normal. However, a check-up ultrasound 3 years later showed a significant ureteropyelocalyceal dilatation, with stasis and decreased renal function on scintigraphy, the reason why antireflux surgery (Cohen procedure) was performed. In the second case, a girl diagnosed with bilateral VUR at birth received bilateral injections with one syringe on each side at the age of 12 months. One month later, the ultrasound showed a dilation of the distal ureters (diameter of the right ureter, up to 10mm; left ureter, up to 6.7mm). The child underwent surgery 8 months later (Cohen procedure) because of iterative pyelonephritis and persistent ureter dilatation. Only one previous case has been described in the literature. In our experience, this complication has occurred only twice in 452 injections (4‰). In conclusion, endoscopic treatment with hyaluronic acid/dextranomer injection is a minimally invasive procedure that improves the situation in cases of VUR. It has few complications. Other than failure, there is a low risk of secondary expansion requiring, in our opinion, ultrasound verification over the long term.
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Affiliation(s)
- N Boudaoud
- Chirurgie pédiatrique, American Memorial Hospital, CHU de Reims, 47, rue Cognacq-Jay, 51100 Reims, France.
| | - A Line
- Chirurgie pédiatrique, American Memorial Hospital, CHU de Reims, 47, rue Cognacq-Jay, 51100 Reims, France
| | - M Pons
- Chirurgie pédiatrique, American Memorial Hospital, CHU de Reims, 47, rue Cognacq-Jay, 51100 Reims, France
| | - F Lefebvre
- Chirurgie pédiatrique, American Memorial Hospital, CHU de Reims, 47, rue Cognacq-Jay, 51100 Reims, France
| | - M A Bouche Pillon
- Chirurgie pédiatrique, American Memorial Hospital, CHU de Reims, 47, rue Cognacq-Jay, 51100 Reims, France
| | - C Francois
- Chirurgie pédiatrique, American Memorial Hospital, CHU de Reims, 47, rue Cognacq-Jay, 51100 Reims, France; Chirurgie plastique reconstructrice et esthétique, hôpital Maison-Blanche, CHU de Reims, 45, rue Cognacq-Jay, 51100 Reims, France
| | - M L Poli Merol
- Chirurgie pédiatrique, American Memorial Hospital, CHU de Reims, 47, rue Cognacq-Jay, 51100 Reims, France
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Abols A, Ducena K, Andrejeva D, Sadovska L, Zandberga E, Vilmanis J, Narbuts Z, Tars J, Eglitis J, Pirags V, Line A. Trefoil factor 3 is required for differentiation of thyroid follicular cells and acts as a context-dependent tumor suppressor. Neoplasma 2015; 62:914-24. [PMID: 26458316 DOI: 10.4149/neo_2015_111] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Trefoil factor 3 (TFF3) is overexpressed in a variety of solid epithelial cancers, where it has been shown to promote migration, invasion, proliferation, survival and angiogenesis. On the contrary, in the majority of thyroid tumors, it is downregulated, yet its role in the development of thyroid cancer remains unknown. Here we show that TFF3 exhibits strong cytoplasmic staining of normal thyroid follicular cells and colloid and the staining is increased in hyperfunctioning thyroid nodules, while it is decreased in all thyroid cancers of follicular cell origin. By meta-analysis of gene expression datasets, we found that in the thyroid cancer, conversely to the breast cancer, the expression of TFF3 mRNA was downregulated by estrogen signaling and confirmed this by treating thyroid cancer cells with estradiol. Forced expression of TFF3 in anaplastic thyroid cancer cells resulted in decreased cell proliferation, clonal spheroid formation and entry into the S phase. Furthermore, it induced acquisition of epithelial-like cell morphology and expression of the differentiation markers of thyroid follicular cells and transcription factors implicated in the thyroid morphogenesis and function. Taken together, this study provides the first evidence that TFF3 may act as a tumor suppressor or an oncogene depending on the cellular context.
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Abols A, Ducena K, Zayakin P, Silina K, Kalnina Z, Sadovska L, Tars J, Vilmanis J, Narbuts Z, Eglitis J, Pirags V, Line A. Survey of autoantibody responses against tumor-associated antigens in thyroid cancer. Cancer Biomark 2014; 14:361-9. [DOI: 10.3233/cbm-140413] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- A. Abols
- Latvian Biomedical Research and Study Centre, Riga, Latvia
- University of Latvia, Riga, Latvia
| | | | - P. Zayakin
- Latvian Biomedical Research and Study Centre, Riga, Latvia
| | - K. Silina
- Latvian Biomedical Research and Study Centre, Riga, Latvia
| | - Z. Kalnina
- Latvian Biomedical Research and Study Centre, Riga, Latvia
| | | | - J. Tars
- Latvian Oncology Center, Riga Eastern Clinical University Hospital, Riga, Latvia
| | - J. Vilmanis
- Pauls Stradins University Hospital, Riga, Latvia
| | - Z. Narbuts
- Pauls Stradins University Hospital, Riga, Latvia
| | - J. Eglitis
- Latvian Oncology Center, Riga Eastern Clinical University Hospital, Riga, Latvia
| | - V. Pirags
- University of Latvia, Riga, Latvia
- Pauls Stradins University Hospital, Riga, Latvia
| | - A. Line
- Latvian Biomedical Research and Study Centre, Riga, Latvia
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Kalnina Z, Meistere I, Zayakin P, Silina K, Pismennaja A, Leja M, Line A. 963: Potential of tumour-associated autoantibodies as biomarkers for gastric cancer detection. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)50855-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kalnina Z, Zayakin P, Silina K, Meistere I, Ivanova L, Stengrevics A, Leja M, Wex T, Malfertheiner P, Line A. 146 Identification of novel tumour-associated autoantibody signatures in gastric cancer. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)70954-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Line A, Silina K, Ivanova L, Kalnina Z, Zayakin P, Meistere I, Endzelins E, Stengrevics A. 306 Identification of novel cancer-testis antigens by studying humoral response against cancer. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)71110-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Kalnina Z, Silina K, Bruvere R, Gabruseva N, Stengrevics A, Barnikol-Watanabe S, Leja M, Line A. Molecular characterisation and expression analysis of SEREX-defined antigen NUCB2 in gastric epithelium, gastritis and gastric cancer. Eur J Histochem 2009; 53:7-18. [PMID: 19351608 DOI: 10.4081/ejh.2009.7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
NUCB2 is an EF-hand Ca2+ binding protein that has been implicated in various physiological processes like calcium homeostasis, hypothalamic regulation of feeding and TNF receptor shedding. In our previous study we identified NUCB2 as a potential tumour antigen eliciting autoantibody responses in 5.4% of gastric cancer patients but not in the healthy individuals.The current study aimed to elucidate the molecular mechanism underlying NUCB2 immunogenicity and to gain an insight into the physiological functions of NUCB2 in the stomach. mRNA expression analysis demonstrated that NUCB2 is ubiquitously expressed in normal tissues, including lymphoid tissues, and downregulated in gastric tumours when compared with the adjacent relatively normal stomach tissues.The search for molecular alterations resulted in the identification of novel mRNA variants transcribed from an alternative promoter and expressed predominantly in gastric cancers. Western blot analysis demonstrated that the protein levels correspond to mRNA levels and revealed that NUCB2 is phosphorylated in gastric mucosa. Furthermore, a 55 kDa isoform,generated presumably by yet an unidentified post-translational modification was detected in gastric tumours and AGS gastric cancer cells but was absent in the relatively normal gastric mucosa and thereby might have served as a trigger for the immune response against NUCB2. Staining of stomach tissue microarray with anti-NUCB2 antibody revealed that it is expressed in the secretory granules of chief cells and in the cytoplasm of parietal cells in the functioning gastric glands which are lost in atrophic glands and tumour cells. Hence we propose that NUCB2 may be implicated in gastric secretion by establishing an agonist-releasable Ca2+ store in ER or Golgi apparatus, signalling via heterotrimeric Galpha proteins and/or mediating the exocytosis of the secretory granules.
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Affiliation(s)
- Zane Kalnina
- Latvian Biomedical Research and Study Centre, Riga, Latvia.
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Kalnina Z, Silina K, Bruvere R, Gabruseva N, Stengrevics A, Barnikol-Watanabe S, Leja M, Line A. Molecular characterisation and expression analysis of SEREX-defined antigen NUCB2 in gastric epithelium, gastritis and gastric cancer. Eur J Histochem 2009; 53:e2. [PMID: 30256860 PMCID: PMC3167273 DOI: 10.4081/ejh.2009.e2] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [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] [Accepted: 10/24/2008] [Indexed: 11/23/2022] Open
Abstract
NUCB2 is an EF-hand Ca2+ binding protein that has been implicated in various physiological processes like calcium homeostasis, hypothalamic regulation of feeding and TNF receptor shedding. In our previous study we identified NUCB2 as a potential tumour antigen eliciting autoantibody responses in 5.4% of gastric cancer patients but not in the healthy individuals. The current study aimed to elucidate the molecular mechanism underlying NUCB2 immunogenicity and to gain an insight into the physiological functions of NUCB2 in the stomach. mRNA expression analysis demonstrated that NUCB2 is ubiquitously expressed in normal tissues, including lymphoid tissues, and downregulated in gastric tumours when compared with the adjacent relatively normal stomach tissues. The search for molecular alterations resulted in the identification of novel mRNA variants transcribed from an alternative promoter and expressed predominantly in gastric cancers. Western blot analysis demonstrated that the protein levels correspond to mRNA levels and revealed that NUCB2 is phosphorylated in gastric mucosa. Furthermore, a 55 kDa isoform, generated presumably by yet an unidentified post-translational modification was detected in gastric tumours and AGS gastric cancer cells but was absent in the relatively normal gastric mucosa and thereby might have served as a trigger for the immune response against NUCB2. Staining of stomach tissue microarray with anti-NUCB2 antibody revealed that it is expressed in the secretory granules of chief cells and in the cytoplasm of parietal cells in the functioning gastric glands which are lost in atrophic glands and tumour cells. Hence we propose that NUCB2 may be implicated in gastric secretion by establishing an agonist-releasable Ca2+ store in ER or Golgi apparatus, signalling via heterotrimeric Gα proteins and/or mediating the exocytosis of the secretory granules.
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Affiliation(s)
- Z Kalnina
- Latvian Biomedical Research and Study Centre, Riga, Latvia
| | - K Silina
- Latvian Biomedical Research and Study Centre, Riga, Latvia
| | - R Bruvere
- Latvian Biomedical Research and Study Centre, Riga, Latvia
| | - N Gabruseva
- Latvian Biomedical Research and Study Centre, Riga, Latvia
| | | | - S Barnikol-Watanabe
- Department of Immunochemistry, Max Planck Institute for Experimental Medicine, Göttingen, Germany
| | - M Leja
- Faculty of Medicine, University of Latvia, Riga, Latvia
| | - A Line
- Latvian Biomedical Research and Study Centre, Riga, Latvia
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Silina K, Kalnina Z, Meistere I, Zayakin P, Abols A, Rivosh A, Line A. Analyses of novel tumour antigens as targets for cancer immunotherapy. European Journal of Cancer Supplements 2008. [DOI: 10.1016/s1359-6349(08)71822-6] [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] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kalnina Z, Meistere I, Silina K, Zayakin P, Rivosh A, Abols A, Line A. 7007 POSTER Development of antigen microarray for systematic analyses of humoral responses in melanoma patients. EJC Suppl 2007. [DOI: 10.1016/s1359-6349(07)71461-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Ahmadi KR, Lanchbury JS, Reed P, Chiano M, Thompson D, Galley M, Line A, Lank E, Wong HJ, Strachan D, Spector TD. Novel association suggests multiple independent QTLs within chromosome 5q21-33 region control variation in total humans IgE levels. Genes Immun 2003; 4:289-97. [PMID: 12761566 DOI: 10.1038/sj.gene.6363968] [Citation(s) in RCA: 10] [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: 11/09/2022]
Abstract
Asthma is a common, heterogeneous, complex disease accompanied by raised total and specific immunoglobulin-E (IgE) antibody levels. Despite numerous previous reports of linkage and association of asthma, atopy and serum IgE levels to genes within the 5q21-33 region, definitive, replicable results are still not available. We used the classical twin design to (i) estimate the relative contributions of genes and environment to variation in total IgE levels, (ii) assess genetic linkage, and (iii) examine allelic association of 11 microsatellite markers spanning the 5q21-33 region to total IgE. Variation in total IgE level was shown to be highly heritable (65%). Although evidence for linkage of the 11 microsatellites to IgE was not observed, the omnibus test of association, not confounded by population substructure, showed positive association of D5S393 and D5S673 to IgE. Genes in the vicinity of D5S673 include hepatitis A virus receptor (HAVCR-1) and IL-12B. Recently, the mouse orthologue of HAVCR-1, the T-cell membrane family of proteins, have been shown to be in strong association with expression of airway hyperactivity in a mouse model of human asthma and atopy. IL-12B subserves many proinflammatory functions and also induces B cells proliferation.
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Affiliation(s)
- K R Ahmadi
- Twin Research & Genetic Epidemiology Unit, St Thomas' Hospital, and Molecular Immunogenetics Unit, Department of Rheumatology, GKT School of Medicine, King's College London, UK.
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Hall N, Pain A, Berriman M, Churcher C, Harris B, Harris D, Mungall K, Bowman S, Atkin R, Baker S, Barron A, Brooks K, Buckee CO, Burrows C, Cherevach I, Chillingworth C, Chillingworth T, Christodoulou Z, Clark L, Clark R, Corton C, Cronin A, Davies R, Davis P, Dear P, Dearden F, Doggett J, Feltwell T, Goble A, Goodhead I, Gwilliam R, Hamlin N, Hance Z, Harper D, Hauser H, Hornsby T, Holroyd S, Horrocks P, Humphray S, Jagels K, James KD, Johnson D, Kerhornou A, Knights A, Konfortov B, Kyes S, Larke N, Lawson D, Lennard N, Line A, Maddison M, McLean J, Mooney P, Moule S, Murphy L, Oliver K, Ormond D, Price C, Quail MA, Rabbinowitsch E, Rajandream MA, Rutter S, Rutherford KM, Sanders M, Simmonds M, Seeger K, Sharp S, Smith R, Squares R, Squares S, Stevens K, Taylor K, Tivey A, Unwin L, Whitehead S, Woodward J, Sulston JE, Craig A, Newbold C, Barrell BG. Sequence of Plasmodium falciparum chromosomes 1, 3-9 and 13. Nature 2002; 419:527-31. [PMID: 12368867 DOI: 10.1038/nature01095] [Citation(s) in RCA: 128] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2002] [Accepted: 09/02/2002] [Indexed: 02/07/2023]
Abstract
Since the sequencing of the first two chromosomes of the malaria parasite, Plasmodium falciparum, there has been a concerted effort to sequence and assemble the entire genome of this organism. Here we report the sequence of chromosomes 1, 3-9 and 13 of P. falciparum clone 3D7--these chromosomes account for approximately 55% of the total genome. We describe the methods used to map, sequence and annotate these chromosomes. By comparing our assemblies with the optical map, we indicate the completeness of the resulting sequence. During annotation, we assign Gene Ontology terms to the predicted gene products, and observe clustering of some malaria-specific terms to specific chromosomes. We identify a highly conserved sequence element found in the intergenic region of internal var genes that is not associated with their telomeric counterparts.
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Affiliation(s)
- N Hall
- The Wellcome Trust Sanger Institute, The Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SA, UK.
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