Cyril Enault^*

Revue Internationale de Géomatique, Vol.33, pp. 77-92, 2024, DOI:10.32604/rig.2024.046591

Abstract La théorie égocentrée est aujourd’hui bien connue des éthologues et des psychologues mais moins diffusée chez les géographes car elle reste encore à l’état de théorie abstraite. Ce papier se propose dans un premier temps de rendre opérationnel cette approche dans le cadre de travaux géographiques à l’échelle de l’individu. Puis, elle envisage d’établir le lien entre l’échelle individu et l’échelle de la ville avec comme objectif de produire des cartes déformées de la ville. More > Graphic Abstract

ASPASIA MANTA¹, SPYRIDON KAZANAS², STEFANOS KARAMAROUDIS³, HELEN GOGAS², DIMITRIOS C. ZIOGAS^2,*

Oncology Research, Vol.30, No.5, pp. 211-219, 2022, DOI:10.32604/or.2022.026913

Abstract Epigenetic mechanisms, such as DNA methylation and histone modifications (e.g., acetylation and deacetylation), are strongly implicated in the carcinogenesis of various malignancies. During transcription, the expression and functionality of coding gene products are altered following the histone acetylation and deacetylation. These processes are regulated by histone acetyltransferases (HATs) and histone deacetylases (HDACs), respectively. HDAC inhibitors (HDACis) have been developed as promising therapeutic agents, to limit exposure to traditional and toxic chemotherapies and offer more alternatives for some specific malignant diseases with limited options. Mechanistically, these agents affect many intracellular pathways, including cell cycle arrest, apoptosis and differentiation, and their mechanism… More >

Fang Dong¹, Qian Fan², Xinguo Su^3,*, Lanting Zeng^4,*

Phyton-International Journal of Experimental Botany, Vol.92, No.2, pp. 383-398, 2023, DOI:10.32604/phyton.2022.023185

Abstract Aroma (volatile) compounds play important ecological functions in plants, and also contribute to the quality of plant-derived foods. Moreover, chiral aroma compounds affect their functions in plants and lead to different flavor quality properties. Formations of chiral aroma compounds are due to the presence of enzymes producing these compounds in plants, which are generally involved in the final biosynthetic step of the aroma compounds. Here, we review recent progress in research on the plant-derived enzymes producing chiral aroma compounds, and their changes in response to environmental factors. The chiral aroma enzymes that have been reported produce (R)-linalool, (S)-linalool, (R)-limonene, and… More >

Igor Mokryk^1,2,*, Vitaly Demyanchuk^1,2, Volodymyr Vashkeba², Ilya Nechay¹, Borys Todurov^1,2

Congenital Heart Disease, Vol.17, No.6, pp. 641-646, 2022, DOI:10.32604/chd.2022.025096

Abstract Congenital heart disease (CHD) is one of the risk factors for developing infective endocarditis (IE). Right-sided IE occurs in 5%–10% of endocarditis cases, and pulmonary valve (PV) is involved in less than 2% of such patients. Literature data are few, and optimal treatment methods, indications for surgery, and types of operative techniques are still under debate. We present an adult patient with a rare combination of the ventricular septal defect (VSD) and PV IE who underwent surgical treatment. Neocuspidization with autologous pericardium was utilized for the reconstruction of his PV. We discuss details of this novel surgical technique. More > Graphic Abstract

RéMY GAUTHIER^1,*, HéLèNE FOLLET², ANA-MARIA TRUNFIO-SFARGHIU³, DELPHINE FARLAY², NINA ATTIK^4,5, SYLVAIN MEILLE¹, JéRôME CHEVALIER¹, DAVID MITTON⁶

BIOCELL, Vol.46, No.10, pp. 2209-2216, 2022, DOI:10.32604/biocell.2022.022290

Abstract To develop durable bone healing strategies through improved control of bone repair, it is of critical importance to understand the mechanisms of bone mechanical integrity when in contact with biomaterials and implants. Bone mechanical integrity is defined here as the adaptation of structural properties of remodeled bone in regard to an applied mechanical loading. Accordingly, the authors present why future investigations in bone repair and regeneration should emphasize on the matrix surrounding the osteocytes. Osteocytes are mechanosensitive cells considered as the orchestrators of bone remodeling, which is the biological process involved in bone homeostasis. These bone cells are trapped in… More >

WENJUAN XU¹, GUANGMING DAI¹, YIFEI LYU², YINING ZHANG¹, XIAOLIN TU^1,*

BIOCELL, Vol.46, No.4, pp. 1097-1104, 2022, DOI:10.32604/biocell.2022.017505

Abstract This study established a method for isolating large numbers of high-purity osteocytes from high-density bone. Bone fragments derived from mice tibia and femurs were alternately digested with type I collagenase and EDTA nine times, and the digested cells and bone chips (BC) were cultured, digested, and passaged when cells were fully grown. The types of cells obtained were identified by morphology, viable cell counts, alkaline phosphatase staining, and biochemical activity analyses, and specific osteocyte and osteoblast markers were evaluated by quantitative real-time polymerase chain reaction. Our results showed that among the cells obtained from the third digestion (fractions 7–9) of… More >

JIRUI WEN^1,#, WENCHAO WU^2,#, MIN TANG¹, MINGYUE BAO¹, XUELING HE³, XINGHONG YAO¹, LIANG LI^1,*

BIOCELL, Vol.46, No.3, pp. 655-665, 2022, DOI:10.32604/biocell.2022.016915

Abstract To dissect which subset of bone marrow monocyte is the major precursor of osteoclast, 3-month-old rat bone marrow was obtained for single-cell RNA sequencing. A total of 6091 cells were acquired for detailed analysis, with a median number of 1206 genes detected per cell and 17,959 genes detected in total. A total of 19 cell clusters were recognized, with the main lineages identified as B cells, Granulocytes, Monocytes, T cells, Erythrocytes and Macrophages. Monocytes were further divided into classical monocytes and non-classical monocytes. Compared with non-classical monocytes, classical monocytes highly expressed osteoclast differentiation related genes Mitf, Spi1, Fos and Csf1r.… More >

SHUTING GU^1,2,#, JINGYI QIN^3,#, SAINAN GAO¹, ZHEN WANG^1,4, QI MENG^1,4, YAN LI^1,4, BING LU⁵, SONGLIN ZHOU^1,2,*, YUNZHAO XU^1,6,*

BIOCELL, Vol.46, No.3, pp. 689-697, 2022, DOI:10.32604/biocell.2022.016225

Abstract Recently, abnormal expression of KIAA1199 has been detected in Epithelial Ovarian Cancer (EOC). However, the underlined anti-ovarian cancer mechanism of KIAA1199 remains to be enlightened. In our study, we performed to elucidate the effects of KIAA1199 on the advanced biological behavior of EOC cells through activation of the IL-6/STAT3 pathway. Confirmed by immunohistochemistry, KIAA1199 was highly expressed in ovarian borderline and malignant epithelial tumors. A retrospective analysis found that EOC patients with low expression of KIAA1199 had a significantly higher 5-year survival rate than those with high expression. Mechanistically, IL-6 was used to stimulate EOC cells, and the expression of… More >

RAMSHA SHAMS^1,2, NAREN L. BANIK^1,2,3,*, AZIZUL HAQUE^1,*

BIOCELL, Vol.45, No.6, pp. 1453-1457, 2021, DOI:10.32604/biocell.2021.017659

Abstract Spinal Cord Injury (SCI) is a debilitating condition characterized by damage to the spinal cord, resulting in loss of function, mobility, and sensation. Although increasingly prevalent in the US, no FDA-approved therapy exists due to the unfortunate complexity of the condition, and the difficulties of SCI may be furthered by the development of SCI-related complications, such as osteoporosis. SCI demonstrates two crucial stages for consideration: the primary stage and the secondary stage. While the primary stage is suggested to be immediate and irreversible, the secondary stage is proposed as a promising window of opportunity for therapeutic intervention. Enolase, a metabolic… More >

F. Castinetti, A. Barlier, F. Sebag, D. Taieb

Oncologie, Vol.21, No.2, pp. 105-111, 2019, DOI:10.3166/onco-2019-0050

Abstract Pheochromocytoma and paraganglioma are tumors leading to increased morbidity and mortality. Over the last 20 years, several major advances allowed a better characterization of these tumors, either from an imaging or from a genetic viewpoint. This is especially the case for the hereditary characteristics of these tumors, as roughly 20 new genes have been identified. This is why the initial steps of the management of a pheochromocytoma and/or a paraganglioma now require a dedicated tertiary referral center. The aim of this review is to depict the diagnostic steps of these tumors, so as to allow the clinician to determine the… More >