نتایج جستجو برای: mest

تعداد نتایج: 482  

Journal: :Traditiones 2023

Prizadevanja za boljšo prihodnost niso vezana na določene lokacije, a so najopaznejša prav v mestih kot osrednjih žariščih moči. Ta si prizadevajo, da bi zadovoljila potrebe (rastočega) prebivalstva z načrtovanjem razvoja infrastrukture in dejavnosti, ki vplivajo kakovost življenja. Prispevek izpostavlja teme, se izbranih slovenskih pokazale osrednje njihovo prihodnost. Take raziskave zapolnjuj...

Journal: :Development 1998
Y Obata T Kaneko-Ishino T Koide Y Takai T Ueda I Domeki T Shiroishi F Ishino T Kono

Parthenogenetic embryos, which contained one genome from a neonate-derived non-growing oocyte and the other from a fully grown oocyte, developed to day 13.5 of gestation in mice, 3 days longer than previously recorded for parthenogenetic development. To investigate the hypothesis that disruption of primary imprinting during oocyte growth leads to the modified expression of imprinted genes and t...

2006
Ying Xiong Yan-Qin Yu Kenji Fujimoto Ying-Shing Chan Jufang He

The intrinsic electrophysiological properties of medial geniculate body (MGB) neurons and their responses to noise bursts/pure tones were examined in the pentobarbital anesthetized guinea pig through intracellular recording. Discharge rate was calculated in the absence of acoustic stimuli over varied membrane potentials which were changed by intracellular injection of current or through automat...

Journal: :Mechanisms of Development 2005
Shunsuke Suzuki Marilyn B. Renfree Andrew J. Pask Geoffrey Shaw Shin Kobayashi Takashi Kohda Tomoko Kaneko-Ishino Fumitoshi Ishino

Genomic imprinting is widespread amongst mammals, but has not yet been found in birds. To gain a broader understanding of the origin and significance of imprinting, we have characterized three genes, from three separate imprinted clusters in eutherian mammals in the developing fetus and placenta of an Australian marsupial, the tammar wallaby Macropus eugenii. Imprinted gene orthologues of human...

Journal: :Biology of reproduction 2009
Steve R Bischoff Shengdar Tsai Nicholas Hardison Alison A Motsinger-Reif Brad A Freking Dan Nonneman Gary Rohrer Jorge A Piedrahita

To increase our understanding of imprinted genes in swine, we carried out a comprehensive analysis of this gene family using two complementary approaches: expression and phenotypic profiling of parthenogenetic fetuses, and analysis of imprinting by pyrosequencing. The parthenote placenta and fetus were smaller than those of controls but had no obvious morphological differences at Day 28 of gest...

Journal: :Revista espanola de cirugia ortopedica y traumatologia 2014
P Tornero-Esteban J A Hoyas E Villafuertes I Garcia-Bullón E Moro B Fernández-Gutiérrez F Marco

OBJECTIVE MiRNAs act as gene silencers that are involved in the regulation of essential cell functions. miR-335 is involved in regulating cell differentiation processes in progenitor cells. Mesenchymal stem cells (MSCs) are progenitor cells of chondrocytes and osteoblasts responsible for homeostatic maintenance of cartilage and bone. The aim of this study was to determine a possible relationshi...

Journal: :BioTechniques 2003
P Couvert K Poirier A Carrié C Chalas P Jouannet C Beldjord T Bienvenu J Chelly A Kerjean

The bisulfite genomic sequencing method is one of the most widely used techniques for methylation analysis in heterogeneous unbiased PCR, amplifying for both methylated and unmethylated alleles simultaneously. However, it requires labor-intensive and time-consuming cloning and sequencing steps. In the current study, we used a denaturing high-performance liquid chromatography (DHPLC) procedure i...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2008
Julian C Lui Gabriela P Finkielstain Kevin M Barnes Jeffrey Baron

In mammals, somatic growth is rapid in early postnatal life but decelerates with age and eventually halts, thus determining the adult body size of the species. This growth deceleration, which reflects declining proliferation, occurs simultaneously in multiple organs yet appears not to be coordinated by a systemic mechanism. We, therefore, hypothesized that growth deceleration results from a gro...

Journal: :Cancer research 1999
I S Pedersen P A Dervan D Broderick M Harrison N Miller E Delany D O'Shea P Costello A McGoldrick G Keating B Tobin T Gorey A McCann

The human PEG1 gene is a newly identified imprinted gene on 7q32. Genetic aberrations of this chromosomal region are often detected in invasive breast carcinomas. In this study, we show monoallelic PEG1 expression in normal breast tissue, indicating the presence of a functional imprint, and more importantly, we demonstrate loss of imprinting (LOI) in all of seven informative invasive breast car...

Journal: :Human reproduction 2007
A Sato E Otsu H Negishi T Utsunomiya T Arima

BACKGROUND There is an increased incidence of rare imprinting disorders associated with assisted reproduction technologies (ARTs). The sex-specific epigenetic modifications that are imposed during gametogenesis act as a primary imprint to distinguish maternal and paternal alleles. The most likely candidate for the gametic mark is DNA methylation. However, the timing of DNA methylation acquisiti...

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