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PubMed Journals Articles About "Prior Exposure Thymidine Analogues Didanosine Associated With Long" RSS

13:31 EDT 18th March 2019 | BioPortfolio

Prior Exposure Thymidine Analogues Didanosine Associated With Long PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Prior Exposure Thymidine Analogues Didanosine Associated With Long articles that have been published worldwide.

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Showing "Prior exposure thymidine analogues didanosine associated with long" PubMed Articles 1–25 of 21,000+

Prior exposure to thymidine analogues and didanosine is associated with long-lasting alterations in adipose tissue distribution and cardiovascular risk factors.

Thymidine analogues (TA) and didanosine (ddI) have been associated with redistribution of body fat from subcutaneous (SAT) to visceral (VAT) adipose tissue, which, in turn, is a risk factor for cardiovascular disease (CVD). We explored differences in adipose tissue distribution between people living with HIV (PLWH) with prior exposure to TA and/or ddI, without exposure, and uninfected controls and the association with CVD risk factors.


Identification of 1,2,4-triazoles as new thymidine phosphorylase inhibitors: Future anti-tumor drugs.

Thymidine phosphorylase (TP) is over expressed in several solid tumors and its inhibition can offer unique target suitable for drug discovery in cancer. A series of 1,2,4-triazoles 3a-3l has been synthesized in good yields and subsequently inhibitory potential of synthesized triazoles 3a-3l against thymidine phosphorylase enzyme was evaluated. Out of these twelve analogs five analogues 3b, 3c, 3f, 3l and 3l exhibited a good inhibitory potential against thymidine phosphorylase. Inhibitory potential in term o...

Influence of lanreotide on uptake of Ga-DOTATATE in patients with neuroendocrine tumours: a prospective intra-patient evaluation.

Somatostatin receptor imaging with PET is the standard of care for patients with a neuroendocrine tumour (NET). Since therapy and imaging with somatostatin analogues utilize the same receptor, current guidelines recommend withdrawing long-acting somatostatin analogues for 3-4 weeks prior to somatostatin receptor PET imaging. The aim of this study is to prospectively assess the effect of lanreotide use on the uptake of Ga-DOTATATE intra-individually 1 day prior to and 1 day post injection of lanreotide.


Pharmacokinetics and immune reconstitution following discontinuation of thiopurine analogues: Implications for drug withdrawal strategies.

Thiopurine analogues discontinuation is common prior to live vaccines, during infection or when de-escalating therapy. Data regarding clearance of active metabolites and immune re-constitution is scant.

Prenatal exposure to bisphenol A analogues on female reproductive functions in mice.

This study was performed to examine whether prenatal exposure to bisphenol (BP) A analogues, BPE and BPS, negatively impacts female reproductive functions and follicular development using mice as a model. CD-1 mice were orally exposed to control treatment (corn oil), BPA, BPE or BPS (0.5, 20 or 50 µg/kg/day) from gestational day 11 (the presence of vaginal plug = 1) to birth. Exposure to BPA, BPE and BPS accelerated the onset of puberty and exhibited abnormal estrous cyclicity, especially with lower doses....

Long-term effects of disaster on depressive symptoms: Type of exposure matters.

Natural disasters have the potential to change the lives of older people, yet most studies rely on small convenience samples, few include assessments of people prior to the disaster, and only a handful examine the effects of different types of exposure.

Evaluation of Prenatal Exposure to Bisphenol Analogues on Development and Long-Term Health of the Mammary Gland in Female Mice.

Continued efforts to phase out bisphenol A (BPA) from consumer products have been met with the challenges of finding safer alternatives.

Dexamethasone pretreatment impairs the thymidylate synthase inhibition mediated flare in thymidine salvage pathway activity in non-small cell lung cancer.

Successful inhibition of thymidylate synthase (TS) by pemetrexed, a TS inhibitor, results in a reproducible transient burst or "flare" in thymidine salvage pathway activity at 2 hrs. of therapy which can be measurable with FLT-PET ([18F]fluorothymidine-positron emission tomography) in non-small cell lung cancer (NSCLC). Routine administration of dexamethasone with pemetrexed-based therapy could potentially confound this imaging approach since dexamethasone is known to inhibit expression of thymidine kinase ...

Luminescent ultralong microfiber prepared via supramolecular self-assembly of lanthanide and thymidine in water.

Luminescent materials are of great potential for many fields such as fluorescent sensing and medical imaging. Herein, the construction of lanthanide based luminescent ultralong microfibers through supramolecular self-assembly (SSA) is reported. Nucleosides (thymidine in particular), the building blocks of nucleic acids, are developed as new ligands to mediate the formation of luminescent microfibers in water. The length of microfibers from thymidine/lanthanide (Eu and Tb) SSA systems is in centimeter scale....

Ten-year off-treatment responses to nucleos(t)ide analogues in chronic hepatitis B patients: varying with pretreatment HBeAg status.

To evaluate the long-term durability of nucleos(t)ide analogues (NAs)' efficacy and to explore related factors for virological relapse in a younger cohort of chronic hepatitis B (CHB).

Tetrodotoxin and its analogues profile in nemertean species from the sea of Japan.

For the first time search for tetrodotoxin (TTX) and its analogues in the extracts of nemerteans using HPLC-MS/MS was performed. TTX analogues were detected in two nemertean species in addition to TTX: 7 analogues were detected in the extract of Cephalothrix simula, 3 analogues - in the extract 11-norTTX of Kulikovia manchenkoi. Presence of 5-deoxyTTX, 11-deoxyTTX, 5,6,11-trideoxyTTX and -6(R)-ol in nemerteans was shown for the first time.

Long-term treatment with acylated analogues of apelin-13 amide ameliorates diabetes and improves lipid profile of high-fat fed mice.

Previous studies have shown that modified apelin analogues exhibited enzyme resistance in plasma and improved circulating half-life compared to apelin-13. This study investigated the antidiabetic effects of chronic administration of stable long acting fatty acid modified apelin analogues, namely, (Lys8GluPAL)apelin-13 amide and pGlu(Lys8GluPAL)apelin-13 amide, in high-fat fed obese-diabetic mice. Male NIH Swiss mice (groups n = 8) were maintained either on a high-fat diet (45% fat) from 8 to 28 weeks old, o...

Kinetics Mechanism and Regulation of Native Human Hepatic Thymidine Phosphorylase.

Thymidine phosphorylase (TP; EC 2.4.2.4) catalyzes the reversible phosphorolysis of thymidine, deoxyuridine, and their analogues to their respective nucleobases and 2-deoxy-α-d-ribose-1-phosphate (dRib-1-P ). TP is a key enzyme in the pyrimidine salvage pathways. Activity of the enzyme is crucial in angiogenesis, cancer chemotherapy, radiotherapy, and tumor imaging, Nevertheless, a complete set of kinetic parameters has never been reported for any human TP. This study describes the kinetic mechanism and re...

Phthalate exposure during pregnancy and long-term weight gain in women.

Phthalates are known endocrine disruptors and peroxisome proliferator-activated receptor (PPAR) activators, potentially capable of promoting an obesogenic effect. Pregnant women are especially vulnerable to phthalate exposure due to physiological and metabolic changes during pregnancy, including those related to the metabolism of xenobiotics. Phthalate exposure during pregnancy has been associated with early gestational weight gain, however, its effect on long-term weight gain remains unclear. The aim of th...

Long-term exposure to low concentrations of air pollutants and hospitalisation for respiratory diseases: A prospective cohort study in Australia.

Short- and long-term spatiotemporal variation in exposure to air pollution is associated with respiratory morbidity in areas with moderate-to-high level of air pollution, but very few studies have examined whether these associations also exist in areas with low level exposure.

Long-term neuropsychiatric morbidity in children exposed prenatally to preeclampsia.

There are contradicting findings in the current literature regarding the association between in-utero exposure to preeclampsia and the long-term neuropsychiatric health of the offspring. The objective of this study is to assess whether prenatal exposure to preeclampsia increases the risk of long-term neuropsychiatric morbidity.

Developmental outcomes after gestational antidepressant treatment with sertraline and its discontinuation in an animal model of maternal depression.

Selective serotonin reuptake inhibitors (SSRIs) are commonly prescribed to women before or during pregnancy to manage their depressive symptoms. However, there is still little knowledge regarding the long-term development effects of SSRI exposure for the fetus or the effects of discontinuing SSRI treatment during pregnancy. This study utilized a translational animal model of maternal depression (based on giving high levels of corticosterone (CORT, 40mg/kg, s.c.) or vehicle (Oil) for 21 days prior to concept...

Time-dependent AI-Modeling of the anticancer efficacy of synthesized gallic acid analogues.

Main objective of this study is mapping of the anticancer efficacy of synthesized gallic acid analogues using modeling and artificial intelligence (AI) over a large range of concentrations and exposure times to explore the underline mechanisms of drug action and draw careful inferences regarding drug response heterogeneity.

Long-term exposure to fine particulate matter and tachycardia and heart rate: Results from 10 million reproductive-age adults in China.

Epidemiological evidence of the association of long-term ambient fine particulate matter (aerodynamic diameter ≤2.5 μm; PM) exposure with resting heart rate is limited. We explored the association of long-term (3-year average) ambient PM exposure with tachycardia and resting heart rate.

Lamin B receptor (LBR) is involved in the induction of cellular senescence in human cells.

Cellular senescence is a phenomenon of irreversible growth arrest in mammalian somatic cells in culture. Various stresses induce cellular senescence and indeed, we have found that excess thymidine effectively induces cellular senescence in human cells. Further, many reports indicate the implication of chromatin proteins in cellular senescence. Here we analysed the role of lamin B receptor (LBR), a nuclear envelope protein that regulates heterochromatin organization, in cellular senescence induced by excess ...

Long-term residential exposure to PM, PM, black carbon, NO, and ozone and mortality in a Danish cohort.

Air pollutants such as NO and PM have consistently been linked to mortality, but only few previous studies have addressed associations with long-term exposure to black carbon (BC) and ozone (O). We investigated the association between PM, PM, BC, NO, and O and mortality in a Danish cohort of 49,564 individuals who were followed up from enrollment in 1993-1997 through 2015. Residential address history from 1979 onwards was combined with air pollution exposure obtained by the state-of-the-art, validated, THOR...

Effects of gemfibrozil on sex hormones and reproduction related performances of Oryzias latipes following long-term (155 d) and short-term (21 d) exposure.

Gemfibrozil, a lipid-regulating pharmaceutical, has been widely used for treating dyslipidemia in humans and detected frequently in freshwater environments. Since plasma cholesterol is a precursor of steroid hormones, the use of gemfibrozil may influence the sex hormone balances. However, its endocrine toxicity following long-term exposure is not well understood. The purpose of the present study is to investigate the effects of gemfibrozil on sex hormones and reproductive outcomes in a freshwater fish, foll...

Pre-surgical medical treatment, a major prognostic factor for long-term remission in acromegaly.

To determine whether pre-surgical medical treatment (PSMT) using long-acting Somatostatin analogues in acromegaly may improve long-term surgical outcome and to determine decision making criteria.

Red-Tuning of Channelrhodopsin Spectrum Using Long-Conjugated Retinal Analogues.

As optogenetic studies become more popular, a demand for red-shifted channelrhodopsin is increasing, because blue-green light is highly scattered or absorbed by animal tissues. In this study, we developed a red-shifted channelrhodopsin by elongating the conjugated double bond system of the native chromophore, all-trans-retinal (ATR1). Analogues of ATR1 and ATR2 (3,4-didehydro-retinal) in which an extra C=C bond is inserted at different positions (C6-C7, C10-C11, and C14-C15 positions) were synthesized, and ...

Imatinib treatments have long-term impact on placentation and embryo survival.

Imatinib is an oral chemotherapeutic used primarily to treat chronic myeloid leukemia (CML) and gastrointestinal stromal tumors (GIST). The potential effects of cancer treatments on a patient's future fertility  are a major concern affecting the quality of life for cancer survivors. The effects of imatinib on future fertility are unknown. It is teratogenic. Therefore, patients are advised to stop treatment before pregnancy. Unfortunately, CML and GIST have high rates of recurrence in the absence of the dru...


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