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https://www.readbyqxmd.com/read/28748061/host-molecular-factors-and-viral-genotypes-in-the-mother-to-child-hiv-1-transmission-in-sub-saharan-africa
#1
REVIEW
Linda Chapdeleine M Mouafo, Béatrice Dambaya, Nicole N Ngoufack, Céline N Nkenfou
Maternal viral load and immune status, timing and route of delivery, viral subtype, and host genetics are known to influence the transmission, acquisition and disease progression of human immunodeficiency virus-1 (HIV-1) infection. This review summarizes the findings from published works on host molecular factors and virus genotypes affecting mother to child transmission (MTCT) in Africa and identifies the gaps that need to be addressed in future research. Articles in PubMed, Google and AIDSearch and relevant conference abstracts publications were searched...
June 23, 2017: Journal of Public Health in Africa
https://www.readbyqxmd.com/read/28724746/therapeutic-targeting-tumor-progression-locus-2-tpl2-activating-transcription-factor-4-atf4-chemokine-stromal-cell-derived-factor-%C3%AE-sdf1%C3%AE-axis-suppresses-diabetic-retinopathy
#2
De-Wei Lai, Keng-Hung Lin, Wayne Huey-Herng Sheu, Maw-Rong Lee, Chung-Yu Chen, Wen-Jane Lee, Yi-Wen Hung, Chin-Chang Shen, Tsung-Ju Chung, Shing-Hwa Liu, Meei-Ling Sheu
Rationale: Diabetic retinopathy is characterized by vasopermeability, vascular leakage, inflammation, blood-retinal barrier breakdown, capillary degeneration and neovascularization. However, the mechanisms underlying the association between diabetes and progression retinopathy remain unclear. Objective: Tumor progression locus 2 (TPL2), a serine-threonine protein kinase, exerts a pathological effect on vascular angiogenesis. This study investigated the role of N(ε)-(carboxymethyl)lysine (CML), a major advanced glycation end products, and the involved TPL2-related molecular signals in diabetic retinopathy using models of in vitro and in vivo and human samples...
July 19, 2017: Circulation Research
https://www.readbyqxmd.com/read/28688831/local-chemical-sympathectomy-of-rat-bone-marrow-and-its-effect-on-marrow-cell-composition
#3
P Dubový, I Klusáková, L Kučera, J Osičková, J Chovancová, T Loja, J Mayer, M Doubek, M Joukal
Existing experimental studies of the effect of sympathetic nerve fibers on bone marrow cells are based on the systemic administration of neurotoxic 6-hydroxydopamine. The method of global chemical sympathectomy has some serious disadvantages and could lead to questionable results. We describe a new method of local chemical sympathectomy of rat femoral bone marrow using guanethidine (Ismelin) delivery using an osmotic mini pump. Local guanethidine treatment for 14days led to complete elimination of sympathetic fibers in femoral bone marrow in contrast to bone marrow of contralateral or naïve femurs...
September 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28688148/adipose-derived-mesenchymal-stem-cells-therapy-for-acute-kidney-injury-induced-by-ischemia-reperfusion-in-a-rat-model
#4
Jian-Bo Zhang, Xiao-Qiao Wang, Guo-Lin Lu, Huan-Sen Huang, Shi-Yuan Xu
Acute kidney injury (AKI) represents a group of complicated syndromes with a high mortality rate. The administration of adipose-derived mesenchymal stem cells (ADMSCs) has been tested as a possible treatment method for AKI. The long-term evaluation of AKI induced by ischemia/reperfusion (IR) and the probable renal protection of ADMSCs are limited. In this study we have established a rat AKI model induced by IR and investigated the possible protective effects of ADMSCs. Adult Sprague-Dawley (SD) rats were divided into three groups (n=6/each group)...
July 8, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28686658/a-hypoxia-response-element-in-the-vegfa-promoter-is-required-for-basal-vegfa-expression-in-skin-and-for-optimal-granulation-tissue-formation-during-wound-healing-in-mice
#5
Domenic Ciarlillo, Christophe Celeste, Peter Carmeliet, Derek Boerboom, Christine Theoret
Hypoxia in skin wounds is thought to contribute to healing through the induction of hypoxia inducible factor-1 (HIF-1). Although HIF-1 can regulate the expression of vascular endothelial growth factor A (Vegfa), whether hypoxia and HIF-1 are required to induce Vegfa expression in the context of wound healing is unknown. To test this hypothesis, we evaluated Vegfa expression and wound healing in mutant mice that lack a functional HIF-1 binding site in the Vegfa promoter. Full-thickness excisional wounds were made using a biopsy punch, left to heal by second intention, and granulation tissue isolated on a time course during healing...
2017: PloS One
https://www.readbyqxmd.com/read/28650670/the-sdf1-a-g-gene-variant-a-susceptibility-variant-for-myocardial-infarction
#6
Yaser Mansoori, Abdolreza Daraei, Zahra Zendebad, Farzan Madadizadeh, Behnam Mansoori, Mohammad Mehdi Naghizadeh, Farzaneh Darbeheshti
BACKGROUND: Although environmental factors play an important role in susceptibility to myocardial infarction (MI), genetic determinants also provide a significant contribution. This study aimed to determine whether or not MI susceptibility is influenced by SDF1-rs1801157A/G and HHEX-rs1111875 A/G polymorphisms in an Iranian population. METHODS: A total of 120 patients with MI and 120 healthy controls were enrolled. Blood samples were collected from all the participants for genomic DNA extraction and testing...
June 26, 2017: Genetic Testing and Molecular Biomarkers
https://www.readbyqxmd.com/read/28621237/role-of-cxcr4-and-sdf1-as-prognostic-factors-for-survival-and-the-association-with-clinicopathology-in-colorectal-cancer-a-systematic-meta-analysis
#7
Yao-Ping Li, Jing Pang, Sheng Gao, Peng-Yu Bai, Wen-da Wang, Pengzhou Kong, Yongping Cui
C-X-C chemokine receptor type 4 and stromal cell-derived factor-1 were proven to play important roles in several types of cancer and in many biological processes connected with tumor growth, invasion, angiogenesis, and metastasis. However, the clinical significance of C-X-C chemokine receptor type 4 and stromal cell-derived factor-1 expression in colorectal cancer remains inaccurate. The purpose of this systematic meta-analysis is to investigate the role of C-X-C chemokine receptor type 4 and stromal cell-derived factor-1 as prognostic factors for survival and the association between C-X-C chemokine receptor type 4/ stromal cell-derived factor-1 and clinicopathology in colorectal cancer...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28618253/hypoxia-inducible-factor-1%C3%AE-signaling-promotes-repair-of-the-alveolar-epithelium-after-acute-lung-injury
#8
Jazalle McClendon, Nicole L Jansing, Elizabeth F Redente, Aneta Gandjeva, Yoko Ito, Sean P Colgan, Aftab Ahmad, David W H Riches, Harold A Chapman, Robert J Mason, Rubin M Tuder, Rachel L Zemans
During the acute respiratory distress syndrome, epithelial cells, primarily alveolar type (AT) I cells, die and slough off, resulting in enhanced permeability. ATII cells proliferate and spread onto the denuded basement membrane to reseal the barrier. Repair of the alveolar epithelium is critical for clinical recovery; however, mechanisms underlying ATII cell proliferation and spreading are not well understood. We hypothesized that hypoxia-inducible factor (HIF)1α promotes proliferation and spreading of ATII cells during repair after lung injury...
August 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28571570/immunological-and-virological-characterization-of-hiv-1-viremia-controllers-in-the-north-region-of-brazil
#9
Samara Tatielle M Gomes, Érica R Gomes, Mike B Dos Santos, Sandra S Lima, Maria Alice F Queiroz, Luiz Fernando A Machado, Izaura M V Cayres-Vallinoto, Antonio Carlos R Vallinoto, Marluísa de O Guimarães Ishak, Ricardo Ishak
BACKGROUND: A rare phenotype of clinical non-progressors to AIDS is not well understood and the new protocol for universal treatment, may block the understanding of viral control thus it is crucial to define this controversial group. METHODS: A cohort of 30 persons followed a criteria for viremia control groups 1 (VC1; n = 2) and 2 (VC2; n = 7) and non-viral controllers (NC; n = 21) including number of years of diagnosis, LTCD4(+), LTCD8(+) counts, plasma viral load and the absence of ART; 241 uninfected control persons were matched to age and sex...
June 1, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28535157/a-meta-analysis-of-cxcl12-expression-for-cancer-prognosis
#10
Harsh Samarendra, Keaton Jones, Tatjana Petrinic, Michael A Silva, Srikanth Reddy, Zahir Soonawalla, Alex Gordon-Weeks
BACKGROUND: CXCL12 (SDF1) is reported to promote cancer progression in several preclinical models and this is corroborated by the analysis of human tissue specimens. However, the relationship between CXCL12 expression and cancer survival has not been systematically assessed. METHODS: We conducted a systematic review and meta-analysis of studies that evaluated the association between CXCL12 expression and cancer survival. RESULTS: Thirty-eight studies inclusive of 5807 patients were included in the analysis of overall, recurrence-free or cancer-specific survival, the majority of which were retrospective...
June 27, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28526501/hypoxia-modulates-cell-migration-and-proliferation-in-placenta-derived-mesenchymal-stem-cells
#11
Li Li, Prashant Kumar Jaiswal, Georges Makhoul, Rishi Jurakhan, Kaviyanka Selvasandran, Khalid Ridwan, Renzo Cecere
OBJECTIVES: For more than a decade, stem cells isolated from different tissues have been evaluated in cell therapy. Among them, the human bone marrow-derived mesenchymal stem cells (hBM-MSCs) were investigated extensively in the treatment of myocardial infarction. Recently, the human placenta-derived mesenchymal stem cells (hPD-MSCs), which are readily available from a biological waste, appear to be a viable alternative to hBM-MSCs. METHODS: C-X-C chemokine receptor type 4 (CXCR4) gene expression and localization were detected and validated in hPD-MSCs and hBM-MSCs via polymerase chain reaction and immunofluorescence...
August 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28523566/radial-glia-cells-control-angiogenesis-in-the-developing-cerebral-cortex-through-tgf-%C3%AE-1-signaling
#12
Michele Siqueira, Daniel Francis, Diego Gisbert, Flávia Carvalho Alcantara Gomes, Joice Stipursky
Neuroangiogenesis in the developing central nervous system is controlled by interactions between endothelial cells (ECs) and radial glia (RG) neural stem cells, although RG-derived molecules implicated in these events are not fully known. Here, we investigated the role of RG-secreted TGF-β1, in angiogenesis in the developing cerebral cortex. By isolation of murine microcapillary brain endothelial cells (MBECs), we demonstrate that conditioned medium from RG cultures (RG-CM) promoted MBEC migration and formation of vessel-like structures in vitro, in a TGF-β1-dependent manner...
May 18, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28445650/cxcr4-targeted-and-redox-responsive-dextrin-nanogel-for-metastatic-breast-cancer-therapy
#13
Feiran Zhang, Siman Gong, Jun Wu, Huipeng Li, David Oupicky, Minjie Sun
The unsatisfied results of cancer therapy are caused by many issues and metastasis of cancer cells is one of the major challenge. It has been reported that inhibiting the SDF1/CXCR4 interaction can significantly reduce the metastasis of breast cancer cells to regional lymph nodes and lung. Herein, a nanogel system equipped with the FDA-approved CXCR4 antagonist AMD3100 was developed and evaluated for its combined antimetastatic and tumor targeting effects. Briefly, a bioreducible cross-linked dextrin nanogel (DNG) coated with AMD3100 was designed to possess multiple functions, including CXCR4 chemokine targeting, inhibition of tumor metastasis, and reduction-responsive intracellular release of doxorubicin (DOX) to reduce the cells proliferation...
May 10, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28379992/a-novel-recombinant-antibody-specific-to-full-length-stromal-derived-factor-1-for-potential-application-in-biomarker-studies
#14
Daniel I Bromage, Stasa Taferner, Mahesh Pillai, Derek M Yellon, Sean M Davidson
BACKGROUND: Stromal derived factor-1α (SDF-1α/CXCL12) is a chemokine that is up-regulated in diseases characterised by tissue hypoxia, including myocardial infarction, ischaemic cardiomyopathy and remote ischaemic conditioning (RIC), a technique of cyclical, non-injurious ischaemia applied remote from the heart that protects the heat from lethal ischaemia-reperfusion injury. Accordingly, there is considerable interest in SDF-1α as a potential biomarker of such conditions. However, SDF-1α is rapidly degraded and inactivated by dipeptidyl peptidase 4 and other peptidases, and the kinetics of intact SDF-1α remain unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28358371/cell-based-therapy-using-mir-302-367-expressing-cells-represses-glioblastoma-growth
#15
Mohamed Fareh, Fabien Almairac, Laurent Turchi, Fanny Burel-Vandenbos, Philippe Paquis, Denys Fontaine, Sandra Lacas-Gervais, Marie-Pierre Junier, Hervé Chneiweiss, Thierry Virolle
Glioblastomas are incurable primary brain tumors that affect patients of all ages. The aggressiveness of this cancer has been attributed in part to the persistence of treatment-resistant glioblastoma stem-like cells. We have previously discovered the tumor-suppressor properties of the microRNA cluster miR-302-367, representing a potential treatment for glioblastoma. Here, we attempted to develop a cell-based therapy by taking advantage of the capability of glioma cells to secrete exosomes that enclose small RNA molecules...
March 30, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28352190/sdf1-3-a-polymorphism-is-associated-with-increased-risk-of-hematological-malignancy-a-meta-analysis
#16
Xiaowen Zhang, Yang Fan, Zhijie Li
CXCL12 (also named SDF1), a member of the chemokine family, has been demonstrated to play an important role in the progression of multiple types of hematological malignancy. Several recent studies have shown that SDF1-3'A polymorphism (rs1801157) is associated with susceptibility to hematological malignancy, but published studies' results are disputed. Therefore, we performed a meta-analysis to evaluate the relationship between SDF1-3'A polymorphism and the risk of hematological malignancy based on the existing literature...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28335041/the-cerebellum-and-its-wrapping-meninge-developmental-interplay-between-two-major-structures
#17
Martin Catala
Meninges have long been considered as a protective and supportive tissue for the central nervous system. Nevertheless, new developmental roles are now attributed to them. The meninges that surround the cerebellum come from the cephalic mesoderm. They are essential for the cerebellum to develop normally. They induce and maintain the basal lamina and glia limitans. In the absence of these structures, the external granular cells of the cerebellum migrate aberrantly and penetrate the subarachnoid space. The molecules involved in the recognition between the cerebellar primordium and the basal lamina belong to two groups in humans: dystroglycan and laminin on the one hand, and GPR56 and collagen III on the other...
March 23, 2017: Neuropediatrics
https://www.readbyqxmd.com/read/28253363/mutation-in-cpsf6-cfim68-cleavage-and-polyadenylation-specificity-factor-subunit-6-causes-short-3-utrs-and-disturbs-gene-expression-in-developing-embryos-as-revealed-by-an-analysis-of-primordial-germ-cell-migration-using-the-medaka-mutant-naruto
#18
Takao Sasado, Hisato Kondoh, Makoto Furutani-Seiki, Kiyoshi Naruse
Our previous studies analyzing medaka mutants defective in primordial germ cell (PGC) migration identified cxcr4b and cxcr7, which are both receptors of the chemokine sdf1/cxcl12, as key regulators of PGC migration. Among PGC migration mutants, naruto (nar) is unique in that the mutant phenotype includes gross morphological abnormalities of embryos, suggesting that the mutation affects a broader range of processes. A fine genetic linkage mapping and genome sequencing showed the nar gene encodes Cleavage and Polyadenylation Specificity Factor subunit 6 (CPSF6/CFIm68)...
2017: PloS One
https://www.readbyqxmd.com/read/28236026/downregulation-of-mir-221-3p-contributes-to-il-1%C3%AE-induced-cartilage-degradation-by-directly-targeting-the-sdf1-cxcr4-signaling-pathway
#19
Xin Zheng, Feng-Chao Zhao, Yong Pang, Dong-Ya Li, Sheng-Cheng Yao, Shao-Song Sun, Kai-Jin Guo
Osteoarthritis (OA) is characterized by degradation of chondrocyte extracellular matrix (ECM). Accumulating evidence suggests that microRNAs (miRNAs) are associated with OA, but little is known of their function in chondrocyte ECM degradation. The objective of this study was to investigate the expression and function of miRNAs in OA. miRNA expression profile was determined in OA cartilage tissues and controls, employing Solexa sequencing and reverse transcription quantitative PCR (RT-qPCR). According to a modified Mankin scale, cartilage degradation was evaluated...
February 24, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/28196519/erratum-to-sdf1-in-the-dorsal-corticospinal-tract-promotes-cxcr4-cell-migration-after-spinal-cord-injury
#20
Vicki M Tysseling, Divakar S Mithal, Vibhu Sahni, Derin Birch, Hosung Jung, Richard J Miller, John A Kessler
No abstract text is available yet for this article.
February 14, 2017: Journal of Neuroinflammation
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