Search results for "mIRs"
showing 10 items of 65 documents
Kurzemes un Zemgales hercogistes landtāgā skatīto jautājumu analīze (1682-1698)
2018
Pētījums veltīts maz pētītam jautājumam Latvijas vēsturē Kurzemes un Zemgales hercoga Frīdriha Kazimira valdīšanas laikam, jo 17. gadsimta nogales hercogistes vēstures pētniecība palikusi hercoga Jēkaba valdīšanas laika un 18. gadsimta sākuma cīņas par varu hercogistē ēnā. Pētījuma mērķis ir caur hercogistes landtāgu lēmumiem analizēt aktualitātes un problēmas laika periodā no 1682. gada līdz 1698. gadam. Pētījuma izstrādes laikā tika iegūta informācija par aktuāliem jautājumiem hercogistē saistībā ar baznīcu, zemnieku dzīves regulējumu, ekonomiku un tirdzniecību un ārpolitiku. Landtāgu lēmumu analīze atklāja būtisku visas hercogistes pastāvēšanas laika posma iezīmi – hercoga un muižniecība…
”Verba volant, scripta manent: LU Juridiskās fakultātes sākotne”: izstādes plakāti
2019
Latīņu teiciens "Verba volant, scripta manent" vēsta, ka teiktais izgaist, bet rakstītais paliek. Ar izstādi LU Bibliotēka sveic LU Juridisko fakultāti simtgadē. Juridiskās fakultātes saknes ir saistītas ar Latvijas Augstskolas, vēlāk – Latvijas Universitātes, dibināšanu, kad tika izveidota Ekonomiski juridiskā jeb Juridiski ekonomiskā fakultāte, kas sastāvēja no Tautsaimniecības nodaļas un Tiesību zinātņu nodaļas. Vēlāk tā ieguva Tautsaimniecības un tiesībzinātņu fakultātes nosaukumu. Izstādē akcentēti konkrētu mācībspēku ieguldījumu fakultātes veidošanā un nozares zinātniskās domas attīstībā.
Zvaigžņotā Debess: 2013/14, Ziema (222)
2013
Latvijas Universitāte
Roles of EGFR and KRAS and their downstream signaling pathways in pancreatic cancer and pancreatic cancer stem cells
2015
Pancreatic cancer is currently the fourth most common cancer, is increasing in incidence and soon will be the second leading cause of cancer death in the USA. This is a deadly malignancy with an incidence that approximates the mortality with 44,000 new cases and 36,000 deaths each year. Surgery, although only modestly successful, is the only curative option. However, due the locally aggressive nature and early metastasis, surgery can be performed on less than 20% of patients. Cytotoxic chemotherapy is palliative, has significant toxicity and improves survival very little. Thus new treatment paradigms are needed desperately. Due to the extremely high frequency of KRAS gene mutations (>90%) d…
Sensitivity of pancreatic cancer cells to chemotherapeutic drugs, signal transduction inhibitors and nutraceuticals can be regulated by WT-TP53
2020
Abstract Pancreatic ductal adenocarcinoma (PDAC) is a highly metastatic malignancy. Approximately 85% of pancreatic cancers are classified as PDACs. The survival of PDAC patients is very poor and only 5–10% of patients survive 5 years after diagnosis. Mutations at the KRAS and TP53 gene are frequently observed in PDAC patients. The PANC-28 cell line lacks wild-type (WT) TP53. In the following study, we have investigated the effects of restoration of WT TP53 activity on the sensitivity of PANC-28 pancreatic cancer cells to various drugs which are used to treat PDAC patients as well as other cancer patients. In addition, we have examined the effects of signal transduction inhibitors which tar…
miR-20b and miR-451a Are Involved in Gastric Carcinogenesis through the PI3K/AKT/mTOR Signaling Pathway: Data from Gastric Cancer Patients, Cell Line…
2020
Gastric cancer (GC) is one of the most common and lethal gastrointestinal malignancies worldwide. Many studies have shown that development of GC and other malignancies is mainly driven by alterations of cellular signaling pathways. MicroRNAs (miRNAs) are small noncoding molecules that function as tumor-suppressors or oncogenes, playing an essential role in a variety of fundamental biological processes. In order to understand the functional relevance of miRNA dysregulation, studies analyzing their target genes are of major importance. Here, we chose to analyze two miRNAs, miR-20b and miR-451a, shown to be deregulated in many different malignancies, including GC. Deregulated expression of miR…
Zvaigžņotā Debess: 2010, Rudens (209)
2010
Contents: G.Carevsky, I.Daube. Comet Bennett ; E.Fogels. Srinivasa Ramanujan ; M.Krastiņš. Smallest Planet of the Solar System: a Riddle of Centuries (1st part) ; A.Alksnis, Z.Alksne. Hot Jupiters and Their Retrograde Motion ; V.Karitāns. James Webb Space Telescope. What will it Be? ; K.Salmiņš. GFZ CHAMP Laser Tracking Award to SLR Station Riga ; J.Jansons. Vladimir Afanasjev, Officer of the Baikonur Cosmodrom in the 1970s (concluded) ; J.Limansky. International Year of Astronomy 2009 in Philately. Series EUROPA (2nd sequel) ; J.Dambītis. Centenary of Prominent Latvian Mathematician Ernests Fogels (1910-1985) ; J.Klētnieks. Sketches of History of Astronomy (concluded) ; M.Gills. Public Sun…
Zvaigžņotā Debess: 2010, Vasara (208)
2010
Contents: N.Cimahoviča. Sun’s Researcher in the Far East ; A.Balklavs. A New Hypothesis on Formation of Galaxies ; A.Balklavs. Gravitation and Peculiar Galaxies ; A.Barzdis. First Population Stars and Galaxies ; Z.Alksne, A.Alksnis. Does Giant Planet Orbit Dwarf Star? ; A.Alksnis, Z.Alksne. Epsilon Aurigae Eclipsed by Dark Dust Disk ; M.Ābele, K.Adgere, E.Grabs, L.Osipova, E.Rutkovska, J.Vjaters, V.Veckalns. Latvian Students Take Part in the Project European Student Moon Orbiter ; Announcement on the 3rd International Symposium on Dark-Sky Parks: 6-10 September 2010, Croatia ; J.Jansons. Vladimir Afanasjev – Officer of the Baikonur Cosmodrom in the 1970s ; J.Limansky. The International Year…
Zvaigžņotā Debess: 2016, Vasara (232)
2016
Contents: “ZVAIGŽŅOTĀ DEBESS” FORTY YEARS AGO: A.Balklavs. New Studies and Conclusions on Nucleus of the Galaxy (abridged) ; U.Dzērvītis. Discussion on Planetary System of Barnard’s Star Continues (abridged) ; M.Eliāss. Meeting of Solar Radio Radiation Section (abridged) ; DEVELOPMENTS in SCIENCE: O.Dumbrājs. Neutrino Oscillations: from the Outset to the Nobel Prize ; R.Misa. Conversation with Andris Ambainis on Quantum Computing Science ; DISCOVERIES: F.Gahbauer. First Direct Detection of Gravitational Waves ; I.Pundure. ATLASGAL Survey of Milky Way Completed ; SPACE RESEARCH and EXPLORATION: J.Jaunbergs. The Story of Pluto’s Satellites ; K.Schwartz. Conducting Ice and Magnetic Field of Ur…
Targeting breast cancer initiating cells: advances in breast cancer research and therapy
2014
Over the past 10 years there have been significant advances in our understanding of breast cancer and the important roles that breast cancer initiating cells (CICs) play in the development and resistance of breast cancer. Breast CICs endowed with self-renewing and tumor-initiating capacities are believed to be responsible for the relapses which often occur after various breast cancer therapies. In this review, we will summarize some of the key developments in breast CICs which will include discussion of some of the key genes implicated: estrogen receptor (. ER), HER2, BRCA1, TP53, PIK3CA, RB, P16INK1 and various miRs as well some drugs which are showing promise in targeting CICs. In additio…