Publications by authors named "Ramon Ramirez"

Background: The differentiation between primary and metastatic salivary gland neoplasms (SGNs) helps in determining appropriate management strategies, including the need for additional diagnostic tests, surveillance, or aggressive treatment. The purpose of this study was to identify and quantify the immature and mature dendritic cells (DCs) in metastatic and no metastatic SGNs and determine its association with clinicopathological findings.

Material And Methods: Cross-sectional, observational, and descriptive study that includes 33 malignant salivary gland neoplasms [MSGN (6, 18.

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Functional recovery after peripheral nerve injuries is critically dependent on axonal regeneration. Several autonomous and non-cell autonomous processes regulate axonal regeneration, including the activation of a growth-associated transcriptional program in neurons and the reprogramming of differentiated Schwann cells (dSCs) into repair SCs (rSCs), triggering the secretion of neurotrophic factors and the activation of an inflammatory response. Repair Schwann cells also release pro-regenerative extracellular vesicles (EVs), but is still unknown whether EV secretion is regulated non-cell autonomously by the regenerating neuron.

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Context: Limited research reveals that the use of different soft tissue mobilization techniques increases tissue mobility in different regions of the body.

Objective: The purpose of this study was to determine whether there is a difference between administering instrument-assisted soft tissue mobilization (IASTM) and therapeutic cupping (TC) on hamstring tightness.

Design: Subjects attended one session wherein treatment and leg order were randomized before attending the session.

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There is growing evidence that physical exercise (PE) may boost cognitive performance. However, criteria regarding PE intensity, duration, and frequency are still being studied. We hypothesize that high PE intensities have effects on inhibitory control.

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There is a noticeable underrepresentation of minorities in clinical trials and registries in pulmonary arterial hypertension (PAH). Prior studies evaluating the association between Hispanic ethnicity and clinical outcomes in patients with PAH have not assessed the socioeconomic profile of Hispanic individuals or the significance of social determinants of health in clinical outcomes. To determine the association between Hispanic ethnicity, social determinants of health, and clinical outcomes in PAH.

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Pulmonary arterial hypertension secondary to drugs and toxins is an important subgroup of group 1 pulmonary hypertension associated with significant morbidity and mortality. Many drugs and toxins have emerged as risk factors for pulmonary arterial hypertension, which include anorexigens, illicit agents, and several US Food and Drug Administration-approved therapeutic medications. Drugs and toxins are classified as possible or definite risk factors for pulmonary arterial hypertension.

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Purpose Of Review: Methamphetamine is a highly addictive drug originally developed for the treatment of neuropsychiatric disorders. At present, the epidemic rise of illicit methamphetamine use has increased the number of patients living with medical complications. Our group has recently identified a definite association between methamphetamine use and pulmonary arterial hypertension (PAH), a life-threatening disease characterized by occlusive vasculopathy and progressive right heart failure.

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The infectious salmon anemia virus (ISAV) is an aquatic pathogen that is a member of the Orthomyxoviridae family with lethal hemorrhagic potential. Although it affects other species of salmonid fish, ISAV only causes disease in Atlantic salmon (Salmo salar) specimens in sea water. In spite of the fact that the virus has been described as enveloped with icosahedral symmetry, viral like particles with anomalous morphology have been observed in field samples, this we have not been able to recover then in adequate quantities for full demonstration.

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The connection between stimulants and pulmonary arterial hypertension (PAH) was first made apparent in the 1960s during an outbreak associated with anorexigen (amphetamine-like appetite suppressants) use. Since then, a total of 16 drugs and toxins have been linked to PAH (ie, drug and toxin-associated PAH [DT-APAH]), including illicit stimulants like methamphetamine. Recently, basic science research and novel genomic studies have started to shed light on possible pathologic and genetic mechanisms implicated in disease development, namely loss of function variants in genes involved in drug detoxification.

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Piscirickettsia salmonis is a facultative intracellular bacterium that causes the disease called "salmon rickettsial syndrome". Attempts to control this disease have been unsuccessful, because existing vaccines have not achieved the expected effectiveness and the antibiotics used fail to completely eradicate the pathogen. This is in part the product of lack of scientific information that still lacks on the mechanisms used by this bacterium to overcome infected-cell responses and survive to induce a productive infection in macrophages.

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Piscirickettsia salmonis is an aggressive fish pathogen that causes Piscirickettsiosis, a systemic disease that threatens the sustainability of salmon production in Chile. To date, the infection strategies of this bacterium are poorly characterized, a Dot/Icm Type IV Secretion System homolog for intracellular multiplication and survival in macrophages is suggested. Since an invading pathogen and its host develop a complex interaction in which the pathogen strives to survive and replicate, while the host tries to eliminate infected cells and the invading pathogen, we decided to evaluate how the bacterium enters macrophages, its preferred target in vivo, and to follow its fate while struggling with its host using actin cytoskeleton as a molecular marker.

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Unlabelled: Infectious salmon anemia (ISA) is a severe disease that affects farmed Atlantic salmon (Salmo salar), causing outbreaks in seawater in most salmon-producing countries worldwide, with particular aggressiveness in southern Chile. The etiological agent of this disease is a virus belonging to the Orthomyxoviridae family, named infectious salmon anemia virus (ISAV). Although it has been suggested that this virus can be vertically transmitted, even in freshwater, there is a lack of compelling experimental evidence to confirm this.

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Piscirickettsia salmonis is a bacterial fish pathogen seriously threatening the sustainability of the Chilean salmon industry. The biology and life cycle of this bacterium is not completely understood and there are no reports explaining how it survives or persists in marine environments. This work provides descriptive data of P.

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We assessed the costs and effectiveness of rapid HIV testing services provided to transgender communities in New York City and San Francisco from April 2005 to December 2006. Program costs were estimated based on service provider's perspective and included the costs attributable to staff time, incentives, transportation, test kits, office space, equipment, supplies, and utilities. The average annual numbers of persons tested were 195 and 106 persons and numbers notified of new HIV diagnoses were 35 (18.

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Objectives: This article describes the demographic and behavioral characteristics, human immunodeficiency virus (HIV) testing history, and results of HIV testing of transgender (TG) people recruited for rapid HIV testing by community-based organizations (CBOs) in three cities.

Methods: CBOs in Miami Beach, Florida, New York City, and San Francisco offered TG people rapid HIV testing and prevention services, and conducted a brief survey. Participants were recruited in outreach settings using various strategies.

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Background: Oral metastatic tumours are uncommon and account for approximately 1% of malignant oral neoplasms.

Results: If the cases where the oral location is in the jawbone, with secondary invasion to the oral soft tissue, are excluded, only 10 cases of gingival metastasis from hepatocellular carcinoma (HCC) have been previously reported in the literature. The clinicopathologic features of an HCC with gingival metastasis are reported.

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