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Céline Renoux, Marc Romana, Philippe Joly, Séverine Ferdinand, Camille Faes, Nathalie Lemonne, Sarah Skinner, Nathalie Garnier, Maryse Etienne-Julan, Yves Bertrand, Marie Petras, Giovanna Cannas, Lydia Divialle-Doumdo, Elie Nader, Daniela Cuzzubbo, Yann Lamarre, Alexandra Gauthier, Xavier Waltz, Kamila Kebaili, Cyril Martin, Arnaud Hot, Marie-Dominique Hardy-Dessources, Vincent Pialoux, Philippe Connes
OBJECTIVES: Blood rheology plays a key role in the pathophysiology of sickle cell anaemia (SS) and sickle cell haemoglobin C disease (SC), but its evolution over the lifespan is unknown. MATERIALS AND METHODS: Blood viscosity, red blood cell (RBC) deformability and aggregation, foetal haemoglobin (HbF) and haematocrit were measured in 114 healthy individuals (AA), 267 SS (161 children + 106 adults) and 138 SC (74 children + 64 adults) patients. RESULTS: Our results showed that 1) RBC deformability is at its maximal value during the early years of life in SS and SC populations, mainly because HbF level is also at its peak, 2) during childhood and adulthood, hydroxycarbamide treatment, HbF level and gender modulated RBC deformability in SS patients, independently of age, 3) blood viscosity is higher in older SS and SC patients compared to younger ones and 4) haematocrit decreases as SS patients age...
2016: PloS One
Kizzy-Clara Cita, Laurent Brureau, Nathalie Lemonne, Marie Billaud, Philippe Connes, Séverine Ferdinand, Benoit Tressières, Vanessa Tarer, Maryse Etienne-Julan, Pascal Blanchet, Jacques Elion, Marc Romana
OBJECTIVES: To investigate the association between priapism in men with sickle cell anemia (SCA) and hemorheological and hemolytical parameters. MATERIALS AND METHODS: Fifty-eight men with SCA (median age: 38 years) were included; 28 who had experienced priapism at least once during their life (priapism group) and 30 who never experienced this complication (control group). Twenty-two patients were treated with hydroxycarbamide, 11 in each group. All patients were at steady state at the time of inclusion...
2016: PloS One
Xueping Yu, Yijuan Zheng, Yong Deng, Julan Li, Ruyi Guo, Milong Su, Desong Ming, Zhenzhong Lin, Jiming Zhang, Zhijun Su
CD4 T helper (Th) cells are reported to be essential for initiating and maintaining an effective immune response to hepatitis B virus (HBV) infection. Th9 cells are a new subset of CD4 Th cells that produce interleukin (IL)-9 and IL-10. The present study aimed to investigate the percentage of Th9 cells relative to the number of CD4 cells in peripheral blood. We also measured serum IL-9 and IL-10 levels in different stages of HBV infection and their relationship with progress and prognosis of liver disease. Whole blood samples from 111 patients with HBV infection, including 39 chronic hepatitis B (CHB), 25 HBV-liver cirrhosis (HBV-LC), 21 acute-on-chronic liver failure (ACLF) patients, and 26 healthy controls were collected...
April 2016: Medicine (Baltimore)
Kizzy-Clara Cita, Séverine Ferdinand, Philippe Connes, Laura Brudey, Benoit Tressières, Maryse Etienne-Julan, Nathalie Lemonne, Vanessa Tarer, Jacques Elion, Marc Romana
A recent study suggested that adenosine signaling pathway could promote hemolysis in patients with sickle cell anemia (SCA). This signaling pathway involves several gene coding enzymes for which variants have been described. In this study, we analyzed the genotype-phenotype relationships between functional polymorphisms or polymorphisms associated with altered expression of adenosine pathway genes, namely adenosine deaminase (ada; rs73598374), adenosine A2b receptor (adora2b; rs7208480), adenylyl cyclase6 (adcy6; rs3730071, rs3730070, rs7300155), and hemolytic rate in SCA patients...
May 2016: Blood Cells, Molecules & Diseases
Jung Hyun Kim, Chun Mae Dong, Julan Kim, Cheul Min An, Hae Ja Baek, Hee Jeong Kong
Heat shock protein (HSP) 70, the highly conserved stress protein families, plays important roles in protecting cells against heat and other stresses in most animal species. In the present study, we identified and characterized four Hsp70 (RuHSP4, RuHSC70, RuHSP12A, RuGRP78) family proteins based on the expressed sequence tag (EST) analysis of the Korean rose bitterling R. uyekii cDNA library. The deduced RuHSP70 family has high amino acid identities of 72-99% with those of other species. Phylogenetic analysis revealed that RuHsp70 family clustered with fish groups (HSP4, HSC70, HSP12A, GRP78) proteins...
September 2015: Balsaeng'gwa Saengsig
Jennifer Knight-Madden, Marc Romana, Rinaldo Villaescusa, Marvin Reid, Maryse Etienne-Julan, Laurence Boutin, Gisèle Elana, Narcisse Elenga, Gillian Wheeler, Ketty Lee, Rosa Nieves, Althea Jones Lecointe, Marie-Laure Lalanne-Mistrih, Gylna Loko, Lisiane Keclard-Christophe, Marie-Dominique Hardy-Dessources
Sickle cell disease (SCD) is a significant problem in the Caribbean, where many individuals have African and Asian forebears. However, reliable prevalence data and specific health care programs for SCD are often missing in this region. Closer collaboration between Caribbean territories initiated in 2006 to set up strategies to promote better equity in the health care system for SCD patients led to the formation of CAREST: the Caribbean Network of Researchers on Sickle Cell Disease and Thalassemia. We present the effectiveness of collaborations established by CAREST to promote SCD newborn screening programs and early childhood care, to facilitate health worker training and approaches for prevention and treatment of SCD complications, and to carry out inter-Caribbean research studies...
May 2016: American Journal of Public Health
Julan Liao, Masayuki Okuyama, Keigo Ishihara, Yoshinori Yamori, Shigeo Iki, Takayoshi Tagami, Haruhide Mori, Seiya Chiba, Atsuo Kimura
The recombinant AglB produced by Pichia pastoris exhibited substrate inhibition behavior for the hydrolysis of p-nitrophenyl α-galactoside, whereas it hydrolyzed the natural substrates, including galactomanno-oligosaccharides and raffinose family oligosaccharides, according to the Michaelian kinetics. These contrasting kinetic behaviors can be attributed to the difference in the dissociation constant of second substrate from the enzyme and/or to the ability of the leaving group of the substrates. The enzyme displays the grater kcat/Km values for hydrolysis of the branched α-galactoside in galactomanno-oligosaccharides than that of raffinose and stachyose...
September 2016: Bioscience, Biotechnology, and Biochemistry
Hyun Kook Cho, Julan Kim, Ji Young Moon, Bo-Hye Nam, Young-Ok Kim, Woo-Jin Kim, Jung Youn Park, Cheul Min An, Jaehun Cheong, Hee Jeong Kong
The most fatal viral pathogen in olive flounder Paralichthys olivaceus, is viral hemorrhagic septicemia virus, which afflicts over 48 species of freshwater and marine fish. Here, we performed gene expression profiling on transcripts isolated from VHSV-infected olive flounder livers using a 13 K cDNA microarray chip. A total of 1832 and 1647 genes were upregulated and down-regulated over two-fold, respectively, after infection. A variety of immune-related genes showing significant changes in gene expression were identified in upregulated genes through gene ontology annotation...
February 2016: Fish & Shellfish Immunology
Keyne Charlot, Marc Romana, Berenike Moeckesch, Stéphane Jumet, Xavier Waltz, Lydia Divialle-Doumdo, Marie-Dominique Hardy-Dessources, Marie Petras, Benoît Tressières, Vanessa Tarer, Olivier Hue, Maryse Etienne-Julan, Sophie Antoine-Jonville, Philippe Connes
Vascular resistance and tissue perfusion may be both affected by impaired vascular function and increased blood viscosity. Little is known about the effects of vascular function on the occurrence of painful vaso-occlusive crises (VOC) in children with sickle cell anemia (SCA). The aim of the present study was to determine which side of the balance (blood viscosity or vascular function) is the most deleterious in SCA and increases the risk for frequent hospitalized VOC. Microvascular function, microcirculatory oxygenation and blood viscosity were determined in a group of 22 SCA children/adolescents at steady state and a group of 13 healthy children/adolescents...
January 2016: Blood Cells, Molecules & Diseases
Julan Kim, Ji Young Moon, Woo-Jin Kim, Dong-Gyun Kim, Bo-Hye Nam, Young-Ok Kim, Jung Youn Park, Cheul Min An, Hee Jeong Kong
Thioredoxin is a multifunctional antioxidant enzyme that belongs to the reductase family. In this study, we cloned and characterized thioredoxin 1 cDNA from the Korean rose bitterling Rhodeus uyekii (RuTrx). The full-length RuTrx cDNA consists of 674 bp with a 324 nt open reading frame (ORF) encoding a 107 aa protein. The deduced RuTrx amino acid sequence indicated a characteristic redox active site, (31)WCGPC(35). Pairwise alignment revealed RuTrx amino acid identity (55.1%-83.2%) with orthologs from various species of mammalia, amphibia, fish and bird...
2015: International Journal of Molecular Sciences
Nathalie Lemonne, Keyne Charlot, Xavier Waltz, Samir K Ballas, Yann Lamarre, Ketty Lee, Régine Hierso, Catherine Connes, Maryse Etienne-Julan, Marc Romana, Philippe Connes
No abstract text is available yet for this article.
October 2015: Haematologica
Hee Jeong Kong, Il Kyu Lee, Julan Kim, Woo-Jin Kim, Hyung Soo Kim, Wang Sik Cho, Dong-Wook Kim, Jung Youn Park, Cheul Min An
The potential impact of natural and synthetic estrogens on aquatic ecosystems has become a subject of great interest in recent years. One synthetic estrogen, 17-alpha-ethinylestradiol (EE2), is present in municipal sewage discharges and causes gonad alterations in various fish species. To understand the possible damage caused by EE2, male Rhodeus uyekii were exposed to 100 ng/L EE2 for 7 days. RNA-Seq was performed to assess the effects of EE2 on gene expression in hepatic and skin tissues. The analysis revealed that EE2 induced the expression of various genes, including sex hormone genes, anti-Mullerian hormone, vitellogenin, and estrogen receptor alpha; cancer genes, breast cancer anti-estrogen resistance protein 3, caveolin 2, and Smad2; and apoptotic genes, p53, Bcl-2, TNF-α, and WDR36...
December 2015: Marine Genomics
Anne Landais, Nathalie Lemonne, Maryse Etienne-Julan
No abstract text is available yet for this article.
July 2015: Journal of Clinical Neurology
Keyne Charlot, Berenike Moeckesch, Stéphane Jumet, Marc Romana, Xavier Waltz, Lydia Divialle-Doumdo, Marie-Dominique Hardy-Dessources, Marie Petras, Benoît Tressières, Aurélien Pichon, Vanessa Tarer, Olivier Hue, Maryse Etienne-Julan, Sophie Antoine-Jonville, Philippe Connes
BACKGROUND: Autonomic nervous system (ANS) activity has been suggested to modulate the clinical severity of sickle cell anemia (SCA) by increasing the risk for vaso-occlusive events. Regular physical activity (PA) is known to improve ANS activity and health status in several cardiovascular and metabolic diseases. Whether regular PA improves the health status of SCA patients remains unknown. PROCEDURE: Twenty-two patients with SCA and 15 healthy (AA) children/adolescents participated to the study...
November 2015: Pediatric Blood & Cancer
Xueping Yu, Ruyi Guo, Desong Ming, Yong Deng, Milong Su, Chengzu Lin, Julan Li, Zhenzhong Lin, Zhijun Su
The transforming growth factor β1/interleukin-31 (TGF-β1/IL-31) pathway plays an important role in the process of cell injury and inflammation. The purpose of this work was to explore the role of the TGF-β1/IL-31 pathway in the cytopathic process of hepatitis B virus (HBV)-related acute-on-chronic liver failure (ACLF). The quantitative serum levels of TGF-β1, IL-9, IL-10, IL-17, IL-22, IL-23, IL-31, IL-33, and IL-35 were analyzed among chronic hepatitis B (CHB) patients (n = 17), ACLF patients (n = 18), and normal control (NC) subjects (n = 18)...
May 2015: Clinical and Vaccine Immunology: CVI
Desong Ming, Xueping Yu, Ruyi Guo, Yong Deng, Julan Li, Chengzu Lin, Milong Su, Zhenzhong Lin, Zhijun Su
The proinflammatory cytokines transforming growth factor beta 1 (TGF-β1) and interleukin (IL)-31 have been implicated in tissue injury. However, whether TGF-β1/IL-31 are stimulated and elevated in response to liver injury that leads to fibrogenesis in hepatitis B virus-related liver cirrhosis (HBV-LC) remains unclear. To investigate the association between TGF-β1/IL-31 and stages of chronic HBV infection, serum TGF-β1, IL-9, IL-10,IL-17, IL-22, IL-23, IL-31, IL-33, and IL-35 were determined among patients with chronic hepatitis B (CHB; n=19), HBV-LC (n=20), and a normal control population (NC; n=18)...
May 2015: Viral Immunology
Jens Vent-Schmidt, Xavier Waltz, Marc Romana, Marie-Dominique Hardy-Dessources, Nathalie Lemonne, Marie Billaud, Maryse Etienne-Julan, Philippe Connes
We compared the blood thixotropic/shear-thinning properties and the red blood cells' (RBC) rheological properties between a group of patients with sickle cell anaemia (SS) and healthy individuals (AA). Blood thixotropy was determined by measuring blood viscosity with a capillary viscometer using a "loop" protocol: the shear rate started at 1 s-1 and increased progressively to 922 s-1 and then re-decreased to the initial shear rate. Measurements were performed at native haematocrit for the two groups and at 25% and 40% haematocrit for the AA and SS individuals, respectively...
2014: PloS One
Nathalie Lemonne, Marie Billaud, Xavier Waltz, Marc Romana, Régine Hierso, Maryse Etienne-Julan, Philippe Connes
Patients with hemoglobin C disease (CC) usually do not develop severe complications in comparison with individuals with sickle cell anemia (SS) or with sickle cell hemoglobin C disease (SC). The present study compared the hematological, biochemical, hemorheological and clinical characteristics of CC patients to those of SS, SC and healthy individuals (AA). Blood viscosity was measured at 225 s(-1) with a cone plate viscometer. The hematocrit-to-blood viscosity ratio (HVR), i.e. an index of red blood cell (RBC) oxygen transport effectiveness, was calculated...
2016: Clinical Hemorheology and Microcirculation
Marijke Grau, Anaïs Mozar, Keyne Charlot, Yann Lamarre, Linda Weyel, Frank Suhr, Bianca Collins, Stéphane Jumet, Marie-Dominique Hardy-Dessources, Marc Romana, Nathalie Lemonne, Maryse Etienne-Julan, Sophie Antoine-Jonville, Wilhelm Bloch, Philippe Connes
Human red blood cells (RBC) express an active and functional endothelial-like nitric oxide (NO) synthase (RBC-NOS). We report studies on RBC-NOS activity in sickle cell anaemia (SCA), a genetic disease characterized by decreased RBC deformability and vascular dysfunction. Total RBC-NOS content was not significantly different in SCA patients compared to healthy controls; however, using phosphorylated RBC-NOS-Ser(1177) as a marker, RBC-NOS activation was higher in SCA patients as a consequence of the greater activation of Akt (phosphorylated Akt-Ser(473) )...
March 2015: British Journal of Haematology
Keyne Charlot, Xavier Waltz, Mona Hedreville, Stéphane Sinnapah, Nathalie Lemonne, Maryse Etienne-Julan, Valérie Soter, Olivier Hue, Marie-Dominique Hardy-Dessources, Philippe Connes
Oxygen uptake efficiency slope (OUES) and excess post-exercise oxygen consumption (EPOC) are markers of physical fitness in the general population but have never been characterized in sickle cell anemia (SCA) where hematological and hemorheological properties are severely altered. Eight SCA patients and eleven healthy subjects (CONT) performed a submaximal incremental exercise conducted until the first ventilatory threshold (VT1). OUES was calculated from the data collected during the incremental period and EPOC parameters (amplitude [A] and time constant [τ]) were calculated from the data measured during exercise recovery...
2015: Clinical Hemorheology and Microcirculation
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