LAM KID

[Genetic possibilities in osteology]

ÁRVAI Kristóf1, KÓSA János Pál1

MARCH 30, 2013

LAM KID - 2013;3(01)

AFFILIATIONS

  1. Semmelweis Egyetem, I. Sz. Belgyógyászati Klinika, PentaCore Laboratórium

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[Osteoporosis is a metabolic bone diseasecharacterised by decreased bone mass andimpaired bone turnover, which leads to anincreased risk of fractures and significantmorbidity and mortality. Its social and pub-lic health impact and the importance of itsearly and accurate diagnosis are indis-putable. The aim of timely and efficienttherapy is to improve bone quality as wellas to prevent the dreaded complications ofbone fractures. In clinical practice, labora-tory diagnosis of biochemical bone mark-ers are particularly important for therapeu-tic monitoring. In this article, reviewing lit-erature data, we discuss bone-specificmarkers from the clinician’s perspective,and highlight their importance in everydayclinical practice. ]

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[Increasing evidence suggests an important role of gender in the incidence, progression and different therapeutic possibilities of several diseases. Recent data demonstrated gender associated differences in the development and progression of chronic renal diseases. Present work reviews sexual dimorphism in different chronic renal diseases, summarizes underlying pathophysiological processes and therapeutic possibilities focusing on the role of gender. New evidences may present the base of gender based therapies in the future.]

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[Background and purpose - Neurodegenerative diseases eg. ischemic stroke causes lifelong disabilities in cognitive functions and movement, furthermore high frequency of death. Antiapoptotic, or growth factor gene targeting to cortical structures could be a useful tool for neuroprotection in ischemic brain diseases. In present study we examined the feasibility of the gene therapy of the cortex and hippocampus via transfecting brain with recombinant adenovirus containing LacZ reporter gene in normal and postischemic condition. Since translation of proteins can be inhibited following ischemia by the phosphorylation of ribosomal subunit eIF2α, phosphor-eIF2α immunohystochemistry were performed. Methods - Our adenovirus vector was introduced via the cisterna magna into control and postischemic gerbil brain. After 48 hours of transfection the brains were examined for X-gal staining. LacZ expressing cells showed blue colour. Five min. transient global ischemia was induced by clipping the vertebral and carotid arteries of gerbil. Phosphor-eIF2α immunohystochemistry were performed following 48 hours of ischemia. Results - Administration of adenoviral vector resulted in transfection of hippocampal CA1, CA2, CA3 cell layers while gyrus dentatus remained untransfected. Cortical pyramidal cell layers were also transfected. In postischemic brain the lack of LacZ gene expression were detected in the CA1 and CA2 layer of hippocampus. Ischemia caused eIF2α phosphorylation in hippocampal CA1, CA2, CA3 and most neuronal layers in the cortex. Conclusion - Introducing adenovirus vector via the cisterna magna may results in effective gene therapy of cortex and hippocampus. To develop effective gene therapy in postischemic hippocampal CA1 and CA2 cell layers needs further investigation. eIF2α phosphorylation probably doesn’t interfere with transgene expression.]