Marcus Allen

ORCID: 0000-0002-2611-209X
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About
Contact & Profiles
Research Areas
  • Ion channel regulation and function
  • Infant Development and Preterm Care
  • Neuroscience and Neuropharmacology Research
  • Estrogen and related hormone effects
  • Lipid Membrane Structure and Behavior
  • Cancer, Stress, Anesthesia, and Immune Response
  • Cerebral Palsy and Movement Disorders
  • Neonatal and fetal brain pathology
  • Family and Disability Support Research
  • Neonatal Respiratory Health Research
  • Receptor Mechanisms and Signaling
  • Corneal surgery and disorders
  • Telomeres, Telomerase, and Senescence
  • Neurobiology and Insect Physiology Research
  • Fetal and Pediatric Neurological Disorders
  • Stress Responses and Cortisol
  • Mast cells and histamine
  • Corneal Surgery and Treatments
  • Nitric Oxide and Endothelin Effects
  • Olfactory and Sensory Function Studies
  • Wound Healing and Treatments
  • Diet and metabolism studies
  • Neuropeptides and Animal Physiology
  • Epigenetics and DNA Methylation
  • Nicotinic Acetylcholine Receptors Study

University of Brighton
2014-2023

University of Pittsburgh
2019-2022

Virginia Department of Health
2018-2019

Johns Hopkins University
1986-2015

Johns Hopkins Medicine
2001-2015

University of Kent
2007-2009

Great Ormond Street Hospital
2005

University College London
1983-2005

Queen's Medical Centre
1998

University of Sussex
1997

Legislatively mandated programs for early intervention on behalf of handicapped infants often stipulate the inclusion physical therapy as a major component treatment cerebral palsy. To evaluate effects therapy, we randomly assigned 48 (12 to 19 months age) with mild severe spastic diplegia receive either 12 (Group A) or 6 preceded by infant stimulation B). The infant-stimulation program included motor, sensory, language, and cognitive activities increasing complexity. Masked outcome...

10.1056/nejm198803313181302 article EN New England Journal of Medicine 1988-03-31

Psychological stress increases the circulating levels of hormones cortisol and norepinephrine (NE). Chronic exposure to elevated has been linked a reduced response chemotherapy through induction DNA damage. We hypothesize that hormone signalling may induce damage production reactive oxygen species (ROS)/reactive nitrogen (RNS) interference in repair processes, promoting tumourigenesis. Breast cancer cell lines were incubated with physiological NE presence absence receptor antagonists...

10.1186/s13058-017-0823-8 article EN cc-by Breast Cancer Research 2017-03-24

The immune system plays an important role in controlling epithelial ovarian cancer (EOC). EOC is considered to be a "cold tumour," tumour that has not triggered strong response by the system. However, infiltrating lymphocytes (TILs) and expression of programmed cell death ligand (PD-L1) are used as prognostic indicators EOC. Immunotherapy such PD-(L)1 inhibitors have shown limited benefit Since affected behavioural stress beta-adrenergic signalling pathway, this study aimed explore impact...

10.1016/j.bbi.2023.02.011 article EN cc-by Brain Behavior and Immunity 2023-02-14

Primary cultures of ovine pituitary cells were used to characterize the effects estradiol on number GnRH receptors. Number receptors was determined by specific binding a saturating dose radioiodinated analog. Estradiol stimulated an increase in that dose-dependent and had time course similar observed vivo. at concentrations from 0.4 40 nM increased (p < 0.05) relative controls. Numbers 8 24 h after addition estradiol, with maximum occurring 12 h. Actinomycin D (10 μg/ml) cycloheximide (25...

10.1095/biolreprod43.6.1032 article EN Biology of Reproduction 1990-12-01

The innate immune system acts as the body’s frontline defense, detecting and responding to pathogenic threats with remarkable precision. Central this defense are inflammatory markers, including cytokines, chemokines, acute-phase proteins, cellular mediators. These markers not only recognize infections damage but also orchestrate cell recruitment signal activation of adaptive immunity. Key cytokines such TNF-α, IL-1, IL-6 play dual roles in promoting inflammation restoring homeostasis....

10.59298/inosras/2025/13.1.3540000 article EN INOSR APPLIED SCIENCES 2025-02-12

Type 1 diabetes mellitus (T1DM) is a chronic condition requiring effective management strategies to achieve glycemic stability and enhance quality of life (QoL). Adolescents with T1DM face unique challenges due physiological psychosocial factors, making dietary interventions crucial for optimizing outcomes. This review compared the effects low-carbohydrate diet (LCD) versus standard intake (SDI) on variability QoL among adolescents over three months. Using narrative methodology, article...

10.59298/inosras/2025/13.1.610000 article EN INOSR APPLIED SCIENCES 2025-02-12

Objective: Our hypothesis was that the degree of antenatally diagnosed cerebral ventriculomegaly is related to aneuploidy, perinatal mortality and long-term neurological morbidity. Methods: Ninety-one cases identified from 1 June 1994 July 1999 were examined for prenatal, intrapartum neonatal complications. Pediatric follow-up reviewed infants with birth up as long 4 years. Minor morbidity defined a score 70-80 on clinical adaptive test/clinical linguistic auditory milestone scale included...

10.1080/jmf.10.4.258.263 article EN The Journal of Maternal-Fetal & Neonatal Medicine 2001-01-01

Our hypothesis was that the degree of antenatally diagnosed cerebral ventriculomegaly is related to aneuploidy, perinatal mortality and long-term neurological morbidity.Ninety-one cases identified from 1 June 1994 July 1999 were examined for prenatal, intrapartum neonatal complications. Pediatric follow-up reviewed infants with birth up as long 4 years. Minor morbidity defined a score 70-80 on clinical adaptive test/clinical linguistic auditory milestone scale included mild motor or language...

10.1080/714052753 article EN The Journal of Maternal-Fetal & Neonatal Medicine 2001-08-01

The roll-out of the Pfizer-BioNTech BNT162b2 COVID-19 vaccine has brought many logistical challenges, such as absence comprehensive stability data leading to strict handling instructions during dilution and administration. Accidental mishandling therefore presents challenging clinical dilemmas, which often led providers err on side caution discard mishandled vials rather than risk administering ineffective vaccine. This study aims answer key questions about vaccine's allow for a more...

10.1136/bmjos-2021-100203 article EN BMJ Open Science 2021-09-01

BK channels regulate vascular tone by hyperpolarizing smooth muscle in response to fluctuating calcium concentrations. Oestrogen has been reported lower blood pressure increasing channel open probability through direct binding the regulatory β1-subunit(s) associated with channel. The present investigation demonstrates that 17β-oestradiol activates complex burst duration of openings. A subconductance state was observed 25% recordings following addition and could reflect uncoupling between...

10.1080/09687860600802803 article EN Molecular Membrane Biology 2006-01-01

The human cornea is a tri-laminar structure composed of several cell types with substantial mitotic potential. Age-related changes in the are associated declining visual acuity and onset overt age-related corneal diseases. Corneal transplantation commonly used to restore vision patients damaged or diseased corneas. However, supply donor tissue limited, thus there considerable interest development tissue-engineered alternatives. A major obstacle these approaches short replicative lifespan...

10.1111/j.1474-9726.2011.00776.x article EN Aging Cell 2011-12-01

Background: Current literature supporting treatment strategies for osteochondritis dissecans (OCD) has limited prognostic utility. Presently, there is no gold standard an OCD "healing" outcome. Accurate and reliable determination of the healed status on basis radiographs would be valuable to provide a guide evidence-based OCD. The purpose this study was determine interrater intrarater reliability radiographic assessment lesion healing in knee. Methods: A hospital database identified 39...

10.1097/bpo.0b013e31825fa80f article EN Journal of Pediatric Orthopaedics 2012-09-01

Abstract Objective There is substantial evidence demonstrating that transferring patients between care providers a high-risk area for medicines management. This study aimed to investigate the effect of sending patients’ hospital discharge letters their nominated community pharmacists on number discrepancies patient’s general practitioner (GP) records and letter self-described medication regime letter. Methods In randomised, controlled trial, 33 participants in two groups, control...

10.1111/ijpp.12364 article EN International Journal of Pharmacy Practice 2017-03-27

Sodium ion transport across a phospholipid bilayer has been demonstrated by new class of transmembrane channel mimetic compounds in which the filtering effect calixarene coupled to membrane penetrating qualities commercial surfactant.

10.1039/b707194a article EN Chemical Communications 2007-01-01
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