171 results match your criteria: "Lovelace Biomedical Research Institute.[Affiliation]"

Evaluation of mechanisms of action of EEG neurofeedback (EEG-nf) using simultaneous fMRI is highly desirable to ensure its effective application for clinical rehabilitation and therapy. Counterbalancing training runs with active neurofeedback and sham (neuro)feedback for each participant is a promising approach to demonstrate specificity of training effects to the active neurofeedback. We report the first study in which EEG-nf procedure is both evaluated using simultaneous fMRI and controlled via the counterbalanced active-sham study design.

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Dietary Pattern, Sputum DNA Methylation, and Lung Health: An Epidemiological Study in People Who Ever Smoked.

Chest

November 2024

Comprehensive Cancer Center, University of New Mexico, Albuquerque, NM; Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM; Lung Cancer Program, Lovelace Biomedical Research Institute, Albuquerque, NM. Electronic address:

Background: We previously identified a panel of sputum DNA methylation that predicts lung aging and risk for lung cancer.

Research Question: Can the sputum methylation panel be used as a readout to derive a dietary pattern beneficial for lung health? Is this dietary pattern associated with various subjective and objective lung health phenotypes? Does this relationship vary among people who currently smoke (current smokers) vs previously smoked (former smokers)?

Study Design And Methods: Using the Lovelace Smoker Cohort (LSC), we employed the LASSO (least absolute shrinkage and selection operator) regularized Poisson regression to define a dietary pattern for sputum. Associations of the dietary pattern with objective and subjective lung health measurements were examined using generalized linear and Cox models in the LSC and the Prostate, Lung, Colorectal, and Ovarian (PLCO) Cancer Screening trial.

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is an Apicomplexan parasite that infects erythrocytes and causes the tick-transmitted infection, babesiosis. can cause a wide variety of clinical manifestations ranging from asymptomatic to severe infection and death. Some risk factors for severe disease are well-defined, an immune compromised state, age greater than 50, and asplenia.

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Intravenous bolus (IVb) injection of fentanyl induces an immediate apnea, but the characteristics of the apnea and relevant mechanism remain unclear. Here, we tested whether IVb injection of fentanyl induced an immediate central and upper airway obstructive apnea associated with chest wall rigidity via activating vagal C-fibers (VCFs) and vagal afferent opioid receptors (ORs). Cardiorespiratory and electromyography of external and internal intercostal, thyroarytenoid, and superior pharyngeal constrictor muscles (EMG, EMG, EMG and EMG) responses to IVb injection of fentanyl were recorded in anesthetized and spontaneously breathing rats with or without bilateral perivagal capsaicin treatment or intravagal microinjection of naloxone.

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Article Synopsis
  • - Gap junctions are channels that allow communication between adjacent cells, but their role in brain tumors, particularly glioblastoma multiforme (GBM), is not well understood.
  • - Research shows that the protein Connexin 43 (Cx43) and the polyamine spermine are co-expressed in human GBM samples, implying they might work together in tumor development and integration into surrounding neural networks.
  • - The study utilized various microscopy techniques to demonstrate that Cx43 and spermine localize in specific regions of GBM, indicating that they may facilitate gap junction activity, which could enable tumor cells to share metabolic products with neighboring cells.
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  • Sepsis is a severe condition marked by inflammation and blood vessel dysfunction, leading to high hospital mortality rates, and new methods are needed to combat it.
  • Research has shown that using drag-reducing polymers (DRPs) can enhance blood flow and oxygen delivery in the body, providing protection to brain cells in traumatic situations.
  • In experiments with mice, DRPs improved microcirculation and oxygen supply, reducing harmful effects of sepsis compared to a control group that only received saline, indicating their potential as a treatment strategy for sepsis-related complications.
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Endothelial dysfunction featuring insufficient endothelial nitric oxide synthase (eNOS) and accompanying nitric oxide (NO) deficiency is implicated in the pathogenesis of cardiovascular diseases. Restoring endothelial NO represents a promising approach to treating cerebrovascular diseases, including stroke. Low-power near-infrared (NIR) light shows diverse beneficial effects, broadly defined as photobiomodulation (PBM).

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  • The study aimed to explore how eye tracking (ET) metrics relate to brain tissue oxygen levels in patients with moderate COVID-19 pneumonia.
  • Conducted on 92 patients around 34 years old, it measured eye movement reactivity using mobile technology while assessing cerebral oxygenation through specialized equipment.
  • Results showed a correlation between eye movement responses and oxygen saturation in the brain, indicating that oxygen levels significantly impact eye coordination during COVID-19 pneumonia.*
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An early event in the pathology of traumatic brain injury (TBI) is a reduction in cerebral blood flow (CBF), which exacerbates secondary injury development and inhibits brain recovery. The endogenous cannabinoid system signalling (eCBs) might be critical in TBI recovery due to modulating synaptic activity and exerting neuroprotective and anti-inflammatory effects. In the brain, eCBs predominantly occur at cannabinoid receptor type 1 via the eCB 2-arachidonoylglycerol (2-AG).

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Article Synopsis
  • The evaluation methods for assessing the injured brain have progressed significantly since 1960, when Lundberg first introduced intracranial pressure (ICP) measurement.
  • Building on this, later research examined cerebral blood flow (CBF) and critical cerebral perfusion pressure (CPP) to better understand brain autoregulation and its limitations, particularly when mean arterial pressure (MAP) decreases.
  • Recent advancements such as induced pressure reactivity (iPRx) and continuous multimodal monitoring have improved the identification of optimal CPP for patients with traumatic brain injury, but challenges remain regarding understanding the mechanisms behind CBF autoregulation loss due to increased ICP.
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  • The study aimed to evaluate the occurrence of posttraumatic cerebral ischaemia (PTCI) and monitor intracranial pressure (ICP) during the transportation of patients with severe traumatic brain injuries (TBI).
  • It included 153 TBI patients, with findings showing that all displayed signs of PTCI, and that roughly 38% had ischaemia affecting both brain hemispheres.
  • The results indicated that ICP significantly increased during transportation, particularly during vertical movement, with an average rise from 19.9 mm Hg to 26.1 mm Hg.
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  • The study aimed to examine how net water uptake (NWU) relates to cerebral oxygenation in patients experiencing posttraumatic ischaemia (PTI) after moderate traumatic brain injury (moTBI).
  • It involved 72 patients, aged 18 to 65, with data collected using perfusion computed tomography and cerebral tissue oxygen saturation measurements.
  • The results showed that oxygen saturation in the affected area was lower than on the opposite side, and a significant correlation was found between oxygen saturation and NWU when there were no frontal lobe injuries.
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Article Synopsis
  • Edwin M. Nemoto reflects on his 50 years with ISOTT, highlighting the advancements in technologies like microelectrodes and near-infrared spectroscopy that have improved measurements of tissue oxygenation and metabolism.
  • He cherishes the collaborations and scientific exchanges with notable researchers worldwide, considering these relationships as the most significant aspect of his experience.
  • The text discusses the role of microvascular shunts in various organs that can worsen conditions like tissue injury and edema, describing how a specific drag-reducing polymer enhances blood flow and improves endothelial function by altering red blood cell dynamics.
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Background/objectives: α-1 antitrypsin (AAT) deficiency is an inherited, genetic condition characterized by reduced serum levels of AAT and increased risk of developing emphysema and liver disease. AAT is normally synthesized primarily in the liver, but muscle-targeting with a recombinant adeno-associated virus (rAAV) vector for α-1 antitrypsin (AAT) gene therapy has been used to minimize liver exposure to the virus and hepatotoxicity. Clinical trials of direct intramuscular (IM) administration of rAAV1-hAAT have demonstrated its overall safety and transgene expression for 5 years.

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Ribonucleic acid (RNA) extraction and purification play pivotal roles in molecular biology and cell and gene therapy, where the quality and integrity of RNA are critical for downstream applications. Automated high-throughput systems have gained interest due to their potential for scalability and reduced labor requirements compared to manual methods. However, ensuring high-throughput capabilities, reproducibility, and reliability while maintaining RNA yield and purity remains challenging.

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Depression is a common consequence of traumatic brain injury. Separately, spontaneous depression-arising without brain injury-has been linked to abnormal responses in motivational neural circuitry to the anticipation or receipt of rewards. It is unknown if post-injury and spontaneously occurring depression share similar phenotypic profiles.

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Protein biomarkers are associated with mortality in cardiovascular disease, but their effect on predicting respiratory and all-cause mortality is not clear. We tested whether a protein risk score (protRS) can improve prediction of all-cause mortality over clinical risk factors in smokers. We utilized smoking-enriched (COPDGene, LSC, SPIROMICS) and general population-based (MESA) cohorts with SomaScan proteomic and mortality data.

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Since their discovery in 1953, research on human adenoviruses (HAdVs) has had diverse foci, resulted in groundbreaking discoveries, such as gene splicing, and generated powerful oncolytic constructs and expression vectors for vaccine development and gene therapy. In contrast, virologists working in this field have made relatively little progress toward the prevention and treatment of the wide spectrum of HAdV-associated diseases. The understanding of species-specific features of viral pathogenesis, or of the mechanisms underlying the establishment of latency and reactivation, is still limited.

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Cardiorespiratory failure induced by inhalation of aerosolized fentanyl in anesthetized rats.

Respir Physiol Neurobiol

September 2024

Department of Physiology, Lovelace Biomedical Research Institute, Albuquerque, NM 87108, United States. Electronic address:

Intravenous rapid injection of fentanyl causes respiratory depression (severe apneas), leading to sudden death, which constitutes the deadliest drug reaction among overdoses of synthetic opioids. Here we asked whether acute inhalation of overdose fentanyl would also result in similar respiratory failure and death. The anesthetized and spontaneously breathing rats with tracheal cannulation were exposed to aerosolized fentanyl at 100 mg/m (FNT) or 30 mg/m (FNT) for 10 min.

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Background: The purpose of this study was to investigate the relationship between blood-brain barrier (BBB) permeability and cognitive functioning in healthy older adults and individuals with neurodegenerative diseases.

Methods And Results: A total of 124 participants with Alzheimer disease, cerebrovascular disease, or a mix Alzheimer's and cerebrovascular diseases and 55 controlparticipants underwent magnetic resonance imaging and neuropsychological testing. BBB permeability was measured with dynamic contrast-enhanced magnetic resonance imaging and white matter injury was measured using a quantitative diffusion-tensor imaging marker of white matter injury.

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Transmembrane protein TMEM230, regulator of metalloproteins and motor proteins in gliomas and gliosis.

Adv Protein Chem Struct Biol

July 2024

Institute of Biomedical Technologies, National Research Council, Milan, Italy; Associazione Fondazione Renato Dulbecco, Milano, Italy. Electronic address:

Glial cells provide physical and chemical support and protection for neurons and for the extracellular compartments of neural tissue through secretion of soluble factors, insoluble scaffolds, and vesicles. Additionally, glial cells have regenerative capacity by remodeling their physical microenvironment and changing physiological properties of diverse cell types in their proximity. Various types of aberrant glial and macrophage cells are associated with human diseases, disorders, and malignancy.

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Rationale: Early natural menopause (early-M; <45 years of age) increases the risk of lung morbidities and mortalities in smokers. However, it is largely unknown whether early-M due to surgery demonstrates similar effects and whether menopausal hormone therapy (MHT) is protective against lung diseases.

Objectives: To assess the associations of early-M and MHT with lung morbidities and mortalities using the prospective Prostate, Lung, Colorectal and Ovarian (PLCO) trial.

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Background: Pediatric allogeneic hematopoietic cell transplant (allo-HCT) recipients are at risk for morbidity and mortality from human adenovirus (HAdV). HAdV can be detected in an asymptomatic state, referred to as infection or with signs or symptoms of illness, referred to as disease. Standardized case definitions are needed to distinguish infection from disease and allow for consistent reporting in both observational cohort studies and therapeutic clinical trials.

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