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Calcium signaling in endothelial and vascular smooth muscle cells: sex differences and the influence of estrogens and androgens (2024)
Journal Article
Asunción-Alvarez, D., Palacios, J., Ybañez-Julca, R. O., Rodriguez-Silva, C. N., Nwokocha, C., Cifuentes, F., & Greensmith, D. J. (2024). Calcium signaling in endothelial and vascular smooth muscle cells: sex differences and the influence of estrogens and androgens. American journal of physiology. Heart and circulatory physiology, 326(4), H950-H970. https://doi.org/10.1152/ajpheart.00600.2023

Calcium signaling in vascular endothelial cells (ECs) and smooth muscle cells (VSMCs) is essential for the regulation of vascular tone. However, the changes to intracellular Ca2+ concentrations are often influenced by sex differences. Furthermore, a... Read More about Calcium signaling in endothelial and vascular smooth muscle cells: sex differences and the influence of estrogens and androgens.

Boswellia carterii oleoresin extracts induce caspase-mediated apoptosis and G 1 cell cycle arrest in human leukaemia subtypes (2023)
Journal Article
Jones, M. A., Borun, A., & Greensmith, D. J. (2023). Boswellia carterii oleoresin extracts induce caspase-mediated apoptosis and G 1 cell cycle arrest in human leukaemia subtypes. Frontiers in Pharmacology, 14, 1282239. https://doi.org/10.3389/fphar.2023.1282239

Background: Leukemias are a common cancer in adults and children. While existing treatments are effective, they are associated with severe side-effects compounded by the emergence of drug resistance. This necessitates the need to develop new drugs an... Read More about Boswellia carterii oleoresin extracts induce caspase-mediated apoptosis and G 1 cell cycle arrest in human leukaemia subtypes.

The role of interleukin-10 in coronary artery disease (2023)
Thesis
Samphire-Noden, B. (2023). The role of interleukin-10 in coronary artery disease. (Thesis). University of Salford

Coronary artery disease (CAD) is a leading cause of mortality and morbidity worldwide, accounting for 66,000 deaths annually in the UK. Atherosclerosis is the underlying pathophysiological mechanism which drives CAD progression, producing an inflamma... Read More about The role of interleukin-10 in coronary artery disease.

The effects of anthracyclines on calcium handling and contractility in sheep ventricular myocytes; role of oxidative stress (2023)
Thesis
Foster, A. (2023). The effects of anthracyclines on calcium handling and contractility in sheep ventricular myocytes; role of oxidative stress. (Thesis). University of Salford

Anthracyclines such as doxorubicin (DOX) and daunorubicin (DAUN) are effective chemotherapeutics and contribute to improved cancer survival rates in children and adults. However, anthracyclines exhibit acute and chronic cardiotoxicity which can produ... Read More about The effects of anthracyclines on calcium handling and contractility in sheep ventricular myocytes; role of oxidative stress.

Characterisation of inflammatory mediators in ischaemic heart disease (2022)
Thesis
Borun, A. Characterisation of inflammatory mediators in ischaemic heart disease. (Dissertation). University of Salford

Coronary artery disease (CAD) is one of the most common causes of death in general population. In the UK it accounts for 64000 deaths annually and there are currently 2.3 million people living with CAD. Persistent inflammation of myocardium is believ... Read More about Characterisation of inflammatory mediators in ischaemic heart disease.

The role of serum biomarkers and oxidative stress in Ischemic Heart Disease (2022)
Thesis
Riley, C. The role of serum biomarkers and oxidative stress in Ischemic Heart Disease. (Dissertation). University of Salford

Ischemic heart disease also referred to as coronary artery disease (CAD) is a leading cause of death worldwide. The primary pathological mechanism underlying CAD is atherosclerosis, an inflammatory process associated with an accumulation of lipids an... Read More about The role of serum biomarkers and oxidative stress in Ischemic Heart Disease.

A hydroalcoholic extract of Senecio nutans SCh. Bip (Asteraceae); its effects on cardiac function and chemical characterization (2022)
Journal Article
Palacios, J., Paredes, A., Cifuentes, F., Catalan, M., Garcia-Villalon, A., Borquez, J., …Greensmith, D. (2023). A hydroalcoholic extract of Senecio nutans SCh. Bip (Asteraceae); its effects on cardiac function and chemical characterization. Journal of Ethnopharmacology, 300, https://doi.org/10.1016/j.jep.2022.115747

Ethnopharmacology relevance The plant Senecio nutans SCh. Bip. is used by Andean communities to treat altitude sickness. Recent evidence suggests it may produce vasodilation and negative cardiac inotropy, though the cellular mechanisms have not been... Read More about A hydroalcoholic extract of Senecio nutans SCh. Bip (Asteraceae); its effects on cardiac function and chemical characterization.

Co-creation and empowerment: pathways to better student engagement (2021)
Other
Namvar, S., Greensmith, D., & Nirmalan, N. (2021). Co-creation and empowerment: pathways to better student engagement. THE Campus

Progression and employability are at the forefront of current conversations in higher education, with much effort invested in developing complex interventions to improve graduate outcomes. Pedagogy research indicates that factors such as a sense of b... Read More about Co-creation and empowerment: pathways to better student engagement.

The chemotherapeutic potential of Boswellia carterii oleoresins (2021)
Thesis
Jones, M. The chemotherapeutic potential of Boswellia carterii oleoresins. (Thesis). University of Salford

Cancer is a leading cause of death worldwide. Though effective treatments are available and reduce mortality, issues such as debilitating side-effects and drug resistance necessitate a need to develop alternatives. Natural products are a key and dive... Read More about The chemotherapeutic potential of Boswellia carterii oleoresins.

SPARC 2019 Fake news & home truths : Salford postgraduate annual research conference book of abstracts (2019)
Book
Aarons, T., Abduljawad, S. A. S., Aboelkheir, A., Addis, M. C., Adeboye, O., Adeniyi, I. A., …Yusup, N. H. (2019). E. M. Barnes, D. Greensmith, M. Griffiths, U. Hurley, T. Ireland, C. Starbuck, …D. Whitnall (Eds.), SPARC 2019 Fake news & home truths : Salford postgraduate annual research conference book of abstracts. Salford, UK: University of Salford

Welcome to the Book of Abstracts for the 2019 SPARC conference. This year we not only celebrate the work of our PGRs but also our first ever Doctoral School Best Supervisor awards, which makes this year’s conference extra special. Once again we have... Read More about SPARC 2019 Fake news & home truths : Salford postgraduate annual research conference book of abstracts.

Systolic [Ca2+ ]i regulates diastolic levels in rat ventricular myocytes (2017)
Journal Article
Sankaranarayanan, R., Kistamas, K., Greensmith, D., Venetucci, L., & Eisner, D. (2017). Systolic [Ca2+ ]i regulates diastolic levels in rat ventricular myocytes. Journal of Physiology, 595(16), 5545-5555. https://doi.org/10.1113/JP274366

[Ca2+]i must be low enough in diastole so that the ventricle is relaxed and can refill with blood. Interference with this will impair relaxation. The factors responsible for regulation of diastolic [Ca2+]i, in particular the relative roles of the sar... Read More about Systolic [Ca2+ ]i regulates diastolic levels in rat ventricular myocytes.

Disulfide-activated protein kinase G Iα regulates cardiac diastolic relaxation and fine-tunes the Frank–Starling response (2016)
Journal Article
Scotcher, J., Prysyazhna, O., Boguslavskyi, A., Kistamas, K., Hadgraft, N., Martin, E., …Eaton, P. (2016). Disulfide-activated protein kinase G Iα regulates cardiac diastolic relaxation and fine-tunes the Frank–Starling response. Nature communications, 7, 13187. https://doi.org/10.1038/ncomms13187

The Frank–Starling mechanism allows the amount of blood entering the heart from the veins to be precisely matched with the amount pumped out to the arterial circulation. As the heart fills with blood during diastole, the myocardium is stretched and o... Read More about Disulfide-activated protein kinase G Iα regulates cardiac diastolic relaxation and fine-tunes the Frank–Starling response.

Biphasic decay of the Ca transient results from increased sarcoplasmic reticulum Ca leak (2015)
Journal Article
Sankaranarayanan, R., Li, Y., Greensmith, D., Eisner, D., & Venetucci, L. (2016). Biphasic decay of the Ca transient results from increased sarcoplasmic reticulum Ca leak. Journal of Physiology, 594(3), 611-623. https://doi.org/10.1113/JP271473

In heart failure, a reduction in Ca transient amplitude and contractile dysfunction can by caused by Ca leak through the sarcoplasmic reticulum (SR) Ca channel (ryanodine receptor, RyR) and/or decreased activity of the SR Ca ATPase (SERCA). We have c... Read More about Biphasic decay of the Ca transient results from increased sarcoplasmic reticulum Ca leak.

The effect of 2,5-di-(tert-butyl)-1,4-benzohydroquinone (TBQ) on intracellular Ca(2+) handling in rat ventricular myocytes (2015)
Journal Article
Miller, L., Greensmith, D., Sankaranarayanan, R., O'Neill, S., & Eisner, D. (2015). The effect of 2,5-di-(tert-butyl)-1,4-benzohydroquinone (TBQ) on intracellular Ca(2+) handling in rat ventricular myocytes. Cell Calcium, 58(2), 208-14. https://doi.org/10.1016/j.ceca.2015.05.002

2,5-Di-(tert-butyl)-1,4-benzohydroquinone (TBQ) is a reversible inhibitor of SERCA, potentially making it a useful tool to study the effects of SERCA inhibition in cardiac cells. However, it is unknown if TBQ also has effects on other components of v... Read More about The effect of 2,5-di-(tert-butyl)-1,4-benzohydroquinone (TBQ) on intracellular Ca(2+) handling in rat ventricular myocytes.

Perturbed atrial calcium handling in an ovine model of heart failure : potential roles for reductions in the L-type calcium current (2014)
Journal Article
Clarke, J., Caldwell, J., Horn, M., Bode, E., Richards, M., Hall, M., …Trafford, A. (2015). Perturbed atrial calcium handling in an ovine model of heart failure : potential roles for reductions in the L-type calcium current. Journal of Molecular and Cellular Cardiology, 79, 169-179. https://doi.org/10.1016/j.yjmcc.2014.11.017

Heart failure (HF) is commonly associated with reduced cardiac output and an increased risk of atrial arrhythmias particularly during β-adrenergic stimulation. The aim of the present study was to determine how HF alters systolic Ca(2+) and the respon... Read More about Perturbed atrial calcium handling in an ovine model of heart failure : potential roles for reductions in the L-type calcium current.

Longstanding complex regional pain syndrome is associated with activating autoantibodies against alpha-1a adrenoceptors (2014)
Journal Article
Dubuis, E., Thompson, V., Leite, M., Blaes, F., Maihöfner, C., Greensmith, D., …Goebel, A. (2014). Longstanding complex regional pain syndrome is associated with activating autoantibodies against alpha-1a adrenoceptors. PAIN, 155(11), 2408-2417. https://doi.org/10.1016/j.pain.2014.09.022

Complex regional pain syndrome (CRPS) is a limb-confined posttraumatic pain syndrome with sympathetic features. The cause is unknown, but the results of a randomized crossover trial on low-dose intravenous immunoglobulins (IVIG) treatment point to a... Read More about Longstanding complex regional pain syndrome is associated with activating autoantibodies against alpha-1a adrenoceptors.

The effects of 2',5'-di(tert-butyl)-1,4-benzohydroquinone (TBQ) on calcium handling in rat ventricular myocytes (2014)
Journal Article
Greensmith, D., Miller, L., & Eisner, D. (2014). The effects of 2',5'-di(tert-butyl)-1,4-benzohydroquinone (TBQ) on calcium handling in rat ventricular myocytes. Proceedings of the Physiological Society (Online), 31, PCA042

2',5'-di(tert-butyl)-1,4-benzohydroquinone (TBQ) is a reversible inhibitor of SERCA, potentially making it a useful tool to study the effects of SERCA inhibition. It has been used in a variety of cell types including ventricular myocytes (1). However... Read More about The effects of 2',5'-di(tert-butyl)-1,4-benzohydroquinone (TBQ) on calcium handling in rat ventricular myocytes.

Direct measurements of SR free Ca reveal the mechanism underlying the transient effects of RyR potentiation under physiological conditions (2014)
Journal Article
Greensmith, D., Galli, G., Trafford, A., & Eisner, D. (2014). Direct measurements of SR free Ca reveal the mechanism underlying the transient effects of RyR potentiation under physiological conditions. Cardiovascular Research, 103(4), 554-563. https://doi.org/10.1093/cvr/cvu158

AIMS: Most of the calcium that activates contraction is released from the sarcoplasmic reticulum (SR) through the ryanodine receptor (RyR). It is controversial whether activators of the RyR produce a maintained increase in the amplitude of the systol... Read More about Direct measurements of SR free Ca reveal the mechanism underlying the transient effects of RyR potentiation under physiological conditions.

Ca analysis : an Excel based program for the analysis of intracellular calcium transients including multiple, simultaneous regression analysis (2013)
Journal Article
Greensmith, D. (2014). Ca analysis : an Excel based program for the analysis of intracellular calcium transients including multiple, simultaneous regression analysis. Computer Methods and Programs in Biomedicine, 113(1), 241-250. https://doi.org/10.1016/j.cmpb.2013.09.004

Here I present an Excel based program for the analysis of intracellular Ca transients recorded using fluorescent indicators. The program can perform all the necessary steps which convert recorded raw voltage changes into meaningful physiological info... Read More about Ca analysis : an Excel based program for the analysis of intracellular calcium transients including multiple, simultaneous regression analysis.