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1.
Pediatr Res ; 95(7): 1851-1859, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38280952

RESUMEN

BACKGROUND: Tilts can induce alterations in cerebral hemodynamics in healthy neonates, but prior studies have only examined systemic parameters or used small tilt angles (<90°). The healthy neonatal population, however, are commonly subjected to large tilt angles (≥90°). We sought to characterize the cerebrovascular response to a 90° tilt in healthy term neonates. METHODS: We performed a secondary descriptive analysis on 44 healthy term neonates. We measured cerebral oxygen saturation (rcSO2), oxygen saturation (SpO2), heart rate (HR), breathing rate (BR), and cerebral fractional tissue oxygen extraction (cFTOE) over three consecutive 90° tilts. These parameters were measured for 2-min while neonates were in a supine (0°) position and 2-min while tilted to a sitting (90°) position. We measured oscillometric mean blood pressure (MBP) at the start of each tilt. RESULTS: rcSO2 and BR decreased significantly in the sitting position, whereas cFTOE, SpO2, and MBP increased significantly in the sitting position. We detected a significant position-by-time interaction for all physiological parameters. CONCLUSION: A 90° tilt induces a decline in rcSO2 and an increase in cFTOE in healthy term neonates. Understanding the normal cerebrovascular response to a 90° tilt in healthy neonates will help clinicians to recognize abnormal responses in high-risk infant populations. IMPACT: Healthy term neonates (≤14 days old) had decreased cerebral oxygen saturation (~1.1%) and increased cerebral oxygen extraction (~0.01) following a 90° tilt. We detected a significant position-by-time interaction with all physiological parameters measured, suggesting the effect of position varied across consecutive tilts. No prior study has characterized the cerebral oxygen saturation response to a 90° tilt in healthy term neonates.


Asunto(s)
Circulación Cerebrovascular , Frecuencia Cardíaca , Saturación de Oxígeno , Humanos , Recién Nacido , Circulación Cerebrovascular/fisiología , Masculino , Femenino , Presión Sanguínea , Oxígeno/metabolismo , Posición Supina , Postura , Hemodinámica , Frecuencia Respiratoria , Voluntarios Sanos , Encéfalo/metabolismo
2.
Br J Cancer ; 122(9): 1288-1297, 2020 04.
Artículo en Inglés | MEDLINE | ID: mdl-32147668

RESUMEN

BACKGROUND: Previous studies suggested that mdivi-1 (mitochondrial division inhibitor), a putative inhibitor of dynamin-related protein (DRP1), decreased cancer cell proliferation through inducing mitochondrial fusion and altering oxygen consumption. However, the metabolic reprogramming underlying the DRP1 inhibition is still unclear in cancer cells. METHODS: To better understand the metabolic effect of DRP1 inhibition, [U-13C]glucose isotope tracing was employed to assess mdivi-1 effects in several cancer cell lines, DRP1-WT (wild-type) and DRP1-KO (knockout) H460 lung cancer cells and mouse embryonic fibroblasts (MEFs). RESULTS: Mitochondrial staining confirmed that mdivi-1 treatment and DRP1 deficiency induced mitochondrial fusion. Surprisingly, metabolic isotope tracing found that mdivi-1 decreased mitochondrial oxidative metabolism in the lung cancer cell lines H460, A549 and the colon cancer cell line HCT116. [U-13C]glucose tracing studies also showed that the TCA cycle intermediates had significantly lower enrichment in mdivi-1-treated cells. In comparison, DRP1-WT and DRP1-KO H460 cells had similar oxidative metabolism, which was decreased by mdivi-1 treatment. Furthermore, mdivi-1-mediated effects on oxidative metabolism were independent of mitochondrial fusion. CONCLUSIONS: Our data suggest that, in cancer cells, mdivi-1, a putative inhibitor of DRP1, decreases oxidative metabolism to impair cell proliferation.


Asunto(s)
Dinaminas/genética , Mitocondrias/efectos de los fármacos , Estrés Oxidativo/efectos de los fármacos , Quinazolinonas/farmacología , Células A549 , Animales , Isótopos de Carbono/química , Isótopos de Carbono/farmacología , Proliferación Celular/efectos de los fármacos , Neoplasias del Colon/tratamiento farmacológico , Neoplasias del Colon/genética , Neoplasias del Colon/patología , Dinaminas/antagonistas & inhibidores , Técnicas de Inactivación de Genes , Glucosa/química , Glucosa/farmacología , Células HCT116 , Humanos , Neoplasias Pulmonares/tratamiento farmacológico , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/patología , Ratones , Mitocondrias/metabolismo , Dinámicas Mitocondriales/efectos de los fármacos , Consumo de Oxígeno/efectos de los fármacos
3.
Laryngoscope ; 134(8): 3695-3697, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38545634

RESUMEN

OBJECTIVE: Anastomotic complications after tracheal resection/cricotracheal resection (TR/CTR), such as granulation tissue formation, can lead to severe morbidity. The off-label use of nebulized ciprofloxacin-dexamethasone (Ciprodex) for granulation tissue prophylaxis has anecdotally been used after TR/CTR, especially in pediatric patients. However, its use in the adult population, and its safety and side effect profile post-TR/CTR has not been reported. This study aims to characterize the incidence of adverse side effects associated with nebulized Ciprodex in post-TR/CTR patients. METHODS: A retrospective review of all patients who underwent TR/CTR from June 2015 to July 2023 was performed. The use of nebulized Ciprodex (1 mL ciprofloxacin-dexamethasone 0.3%-0.1% otic suspension in 4 mL normal saline) while inpatient was evaluated. Potential side effects were defined as oral thrush, ageusia, arthralgia, and allergic reaction, and were recorded for all patients. RESULTS: Seventy-three patients underwent TR/CTR from June 2015 to July 2023. Of these, 53 (72.6%) had documented Ciprodex administration during their postoperative course. One (1.9%) patient reported at least one side effect, including one instance of skin rash (1.9%) and one instance of allergic reaction (1.9%). There were no other side effects attributed to Ciprodex use. CONCLUSIONS: The incidence of side effects related to the use of nebulized Ciprodex is felt to be minimal in post-TR/CTR. Although Ciprodex may have the potential to treat granulation tissue in the airway, further studies are needed to verify its efficacy and safety. LEVEL OF EVIDENCE: 4 Laryngoscope, 134:3695-3697, 2024.


Asunto(s)
Ciprofloxacina , Dexametasona , Nebulizadores y Vaporizadores , Complicaciones Posoperatorias , Tráquea , Humanos , Estudios Retrospectivos , Masculino , Femenino , Persona de Mediana Edad , Dexametasona/administración & dosificación , Dexametasona/efectos adversos , Ciprofloxacina/administración & dosificación , Ciprofloxacina/efectos adversos , Complicaciones Posoperatorias/prevención & control , Complicaciones Posoperatorias/epidemiología , Complicaciones Posoperatorias/etiología , Adulto , Tráquea/cirugía , Anciano , Combinación de Medicamentos , Uso Fuera de lo Indicado , Administración por Inhalación , Cuidados Posoperatorios/métodos , Adulto Joven
4.
A A Pract ; 18(7): e01811, 2024 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-38976513

RESUMEN

While Title VI of the Civil Rights Act of 1964 mandates use of interpreters for patients with limited English proficiency, significant disparities persist in intensive postsurgical care. We present the case of a 60-year-old Vietnamese-speaking man with a Type A aortic dissection requiring postoperative mechanical ventilation and stroke care. Despite use of a remote video interpreter, our language-discordant nursing and physician providers faced challenges in managing agitation and delirium and assessing neurological function. This case highlights the need for adequate interpretation equipment, linguistic diversity among providers, and interventions to promote and enable consistent certified and professional medical interpreter use.


Asunto(s)
Delirio , Accidente Cerebrovascular , Humanos , Masculino , Persona de Mediana Edad , Accidente Cerebrovascular/complicaciones , Agitación Psicomotora , Dominio Limitado del Inglés , Complicaciones Posoperatorias , Disección Aórtica/cirugía , Respiración Artificial
5.
Viruses ; 16(6)2024 May 27.
Artículo en Inglés | MEDLINE | ID: mdl-38932145

RESUMEN

Mucosal immunity may contribute to clearing SARS-CoV-2 infection prior to systemic infection, thereby allowing hosts to remain seronegative. We describe the meaningful detection of SARS-CoV-2-specific nasal mucosal antibodies in a group of exposed-household individuals that evaded systemic infection. Between June 2020 and February 2023, nasopharyngeal swab (NPS) and acute and convalescent blood were collected from individuals exposed to a SARS-CoV-2-confirmed household member. Nasal secretory IgA (SIgA) antibodies targeting the SARS-CoV-2 spike protein were measured using a modified ELISA. Of the 36 exposed individuals without SARS-CoV-2 detected by the RT-PCR of NPS specimens and seronegative for SARS-CoV-2-specific IgG at enrollment and convalescence, 13 (36.1%) had positive SARS-CoV-2-specific SIgA levels detected in the nasal mucosa at enrollment. These individuals had significantly higher nasal SIgA (median 0.52 AU/mL) compared with never-exposed, never-infected controls (0.001 AU/mL) and infected-family participants (0.0002 AU/mL) during the acute visit, respectively (both p < 0.001). The nasal SARS-CoV-2-specific SIgA decreased rapidly over two weeks in the exposed seronegative individuals compared to a rise in SIgA in infected-family members. The nasal SARS-CoV-2-specific SIgA may have a protective role in preventing systemic infection.


Asunto(s)
Anticuerpos Neutralizantes , Anticuerpos Antivirales , COVID-19 , Inmunoglobulina A Secretora , Mucosa Nasal , SARS-CoV-2 , Humanos , SARS-CoV-2/inmunología , COVID-19/inmunología , COVID-19/diagnóstico , COVID-19/virología , Inmunoglobulina A Secretora/inmunología , Inmunoglobulina A Secretora/análisis , Masculino , Femenino , Adulto , Anticuerpos Antivirales/sangre , Anticuerpos Antivirales/inmunología , Persona de Mediana Edad , Anticuerpos Neutralizantes/inmunología , Anticuerpos Neutralizantes/sangre , Mucosa Nasal/inmunología , Mucosa Nasal/virología , Glicoproteína de la Espiga del Coronavirus/inmunología , Adulto Joven , Inmunidad Mucosa , Anciano , Inmunoglobulina G/sangre , Inmunoglobulina G/inmunología
6.
Disabil Health J ; 16(1): 101373, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-36156271

RESUMEN

BACKGROUND: Spina bifida (SB) is a condition resulting from the improper closure of the neural tube and vertebral column during fetal development. While patients' life expectancy and quality of life have improved dramatically due to medical advances, children continue to experience health-related issues that often require hospitalizations. OBJECTIVE: The association among sociodemographic and clinical characteristics with potentially preventable hospitalizations (PPH) in children and youth with myelomeningocele type SB was investigated in this cross-sectional study. METHODS: Chart reviews and data extraction were conducted on 108 children and youth, ages 1 month to 21 years, admitted for PPH in a regional children's academic medical center between May 2017 and July 2019. Sociodemographic variables included sex, age, type of insurance and ethnicity. Clinical variables included level of lesion, ambulation status, shunt dependency and selected diagnostic categories. Univariate, bivariate, and multivariate analyses were conducted to identify factors associated with PPH. RESULTS: Factors associated with PPH included being male, ages 5-18 years, low lumbar level lesions, non-ambulatory, with public insurance, Hispanic and shunt dependent. Most hospitalizations (73%) were for neurologic or urologic conditions. Factors independently associated with PPH were ethnicity for urologic conditions, being ambulatory for metabolic conditions, and age for gastroenterology conditions. CONCLUSION: Selected demographic and clinical variables were found to be associated with PPH of children and youth with myelomeningocele-type SB. The most common reasons for PPH were shunt malfunctions and urinary tract infections, consistent with other studies.


Asunto(s)
Personas con Discapacidad , Meningomielocele , Disrafia Espinal , Niño , Adolescente , Humanos , Masculino , Preescolar , Femenino , Meningomielocele/complicaciones , Estudios Transversales , Calidad de Vida , Población Urbana , Disrafia Espinal/complicaciones , Hospitalización , Factores de Riesgo , Hospitales
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