Feeding Frequency Affects Cultured Rat Pituitary Cells in Low Gravity

In this report, we describe the results of a rat pituitary cell culture experiment done on STS-65 in which the effect of cell feeding on the release of the six anterior pituitary hormones was studied. We found complex microgravity related interactions between the frequency of cell feeding and the quantity and quality (i.e. biological activity) of some of the six hormones released in flight. Analyses of growth hormone (GH) released from cells into culture media on different mission days using gel filtration and ion exchange chromatography yielded qualitatively similar results between ground and flight samples. Lack of cell feeding resulted in extensive cell clumping in flight (but not ground) cultures. Vigorous fibroblast growth occurred in both ground and flight cultures fed 4 times. These results are interpreted within the context of autocrine and or paracrine feedback interactions. Finally the payload specialist successfully prepared a fresh trypsin solution in microgravity, detached the cells from their surface and reinserted them back into the culture chamber. These cells reattached and continued to release hormone in microgravity. In summary, this experiment shows that pituitary cells are microgravity sensitive and that coupled operations routinely associated with laboratory cel1 culture can also be accomplished in low gravity

Bioprocessing in Microgravity: Applications of Continuous Flow Electrophoresis to Rat Anterior Pituitary Particles

In this report we describe the results of a continuous flow electrophoresis (CFE) experiment done on STS-65 in which we tested the idea that intracellular growth hormone (GH) particles contained in a cell lysate prepared from cultured rat anterior pituitary cells in microgravity might have different electrophoretic mobilities from those in a synchronous ground control cell lysate. Collectively, the results suggested that CFE processing in microgravity was better than on earth; more samples could be processed at a time (6 x) and more variant forms of GH molecules could be resolved as well. We had also hoped to carry out a pituitary cell CFE experiment, but failure of the hardware required that the actual cell electrophoresis trials be done on earth shortly after Shuttle landing. Data from these experiments showed that space-flown cells possessed a higher electrophoretic mobility than ground control cells, thereby offering evidence for the idea that exposure of cultured cells to microgravity can change their net surface charge-density especially when the cells are fed. Collectively, the results from this pituitary cell experiment document the advantage of using coupled cell culture and CFE techniques in the microgravity environment

Cost-minimization analysis of oral versus intravenous antibiotic treatment for Klebsiella pneumoniae liver abscess

A cost-minimization analysis was conducted for Klebsiella pneumoniae liver abscess (KLA) patients enrolled in a randomized controlled trial which found oral ciprofloxacin to be non-inferior to intravenous (IV) ceftriaxone in terms of clinical outcomes. Healthcare service utilization and cost data were obtained from medical records and estimated from self-reported patient surveys in a non-inferiority trial of oral ciprofloxacin versus IV ceftriaxone administered to 152 hospitalized adults with KLA in Singapore between November 2013 and October 2017. Total costs were evaluated by category and payer, and compared between oral and IV antibiotic groups over the trial period of 12 weeks. Among the subset of 139 patients for whom cost data were collected, average total cost over 12 weeks was $16,378 (95$14,620-$18,136) for the oral ciprofloxacin group and$20,569 (95% CI, $18,296-$22,842) for the IV ceftriaxone group, largely driven by lower average outpatient costs, as the average number of outpatient visits was halved for the oral ciprofloxacin group. There were no other statistically significant differences, either in inpatient costs or in other informal healthcare costs. Oral ciprofloxacin is less costly than IV ceftriaxone in the treatment of Klebsiella liver abscess, largely driven by reduced outpatient service costs.Trial registration: ClinicalTrials.gov Identifier NCT01723150 (7/11/2012)

Determinación de serogrupos circulantes de Dichelobacter nodosus en majadas con diagnóstico clínico de pietín en Uruguay: resultados preliminares.

Mediante un proyecto interinstitucional e interdisciplinario, INIA y el SUL junto a otras instituciones identifican serogrupos de las bacterias causantes de pietín, en una búsqueda de nuevas alternativas de control de la principal afección podal ovina de nuestro país

Safety and efficacy of a 5-minute infusion versus the standard 30-minute infusion for antibiotics in an outpatient setting

10.1016/j.ijid.2021.07.018International Journal of Infectious Diseases110160-16

Biliblanket Utilization for Outpatient Treatment of Newborn Jaundice

Hyperbilirubinemia is a common neonatal diagnosis. Biliblankets have the potential to reduce readmission for hyperbilirubinemia. The study purpose was to characterize home biliblanket treatment for hyperbilirubinemia using retrospective medical record review of newborns with total serum bilirubin of 0.1 to 3 mg/dL below inpatient threshold seen at 9 pediatric clinics (N = 359). The main outcomes were whether a biliblanket was used and whether the usage impacted readmissions. Home biliblankets were used for 44% of newborns. Nine percent of newborns were readmitted for hyperbilirubinemia. Four percent of newborns treated with a biliblanket were readmitted compared with 13% of those not treated with a biliblanket (P =.002). Newborns treated with a biliblanket (odds ratio [OR] = 0.16; 95% confidence interval [CI] = 0.06-0.44) and newborns 3 days or older (OR = 0.16; 95% CI = 0.06-0.43) were less likely to be readmitted than newborns not treated with a biliblanket and 2-day-old newborns. We found that home biliblanket use was associated with lower odds of hospital readmission for newborn jaundice.http://deepblue.lib.umich.edu/bitstream/2027.42/175852/2/00099228221136446.pdfPublished versionDescription of 00099228221136446.pdf : Published versio

Determinación de serogrupos circulantes de Dichelobacter nodosusen majadas con diagnóstico clínico de Foot-Rot en ovinos de Uruguay. Resultados Preliminares. [abstract].

Las afecciones podales representan uno de los problemas de salud más importantes de los ovinos. Los animales afectados pierden bienestar y productividad. La principal enfermedad podal es el Foot-rot (Pietín); enfermedad infecto-contagiosa causada por Dichelobacter nodosus. En Uruguay existe escasa información actualizada respecto a cuáles son los serogrupos actuantes de D. nodosus y esto es muy importante para estrategias de control de la enfermedad a través de vacunaciones serogrupo-específicas

FPTA 360: sostenibilidad del ovino en sistemas ganaderos mixtos.

Este artículo presenta los objetivos y avances del nuevo FPTA con foco en ovinos. En base a un enfoque que contempla el sistema predial e integra el conocimiento técnico con la experiencia de los productores, la iniciativa se propone trabajar sobre las principales problemáticas y oportunidades del rubro a nivel de campo

Oral vs intravenous antibiotics for patients with klebsiella pneumoniae liver abscess: A randomized, controlled noninferiority study

Background Klebsiella pneumoniae liver abscess (KLA) is emerging worldwide due to hypermucoviscous strains with a propensity for metastatic infection. Treatment includes drainage and prolonged intravenous antibiotics. We aimed to determine whether oral antibiotics were noninferior to continued intravenous antibiotics for KLA. Methods This noninferiority, parallel group, randomized, clinical trial recruited hospitalized adults with liver abscess and K. pneumoniae isolated from blood or abscess fluid who had received ≤7 days of effective antibiotics at 3 sites in Singapore. Patients were randomized 1:1 to oral (ciprofloxacin) or intravenous (ceftriaxone) antibiotics for 28 days. If day 28 clinical response criteria were not met, further oral antibiotics were prescribed until clinical response was met. The primary endpoint was clinical cure assessed at week 12 and included a composite of absence of fever in the preceding week, C-reactive protein <20 mg/L, and reduction in abscess size. A noninferiority margin of 12% was used. Results Between November 2013 and October 2017, 152 patients (mean age, 58.7 years; 25.7% women) were recruited, following a median 5 days of effective intravenous antibiotics. A total of 106 (69.7%) underwent abscess drainage; 71/74 (95.9%) randomized to oral antibiotics met the primary endpoint compared with 72/78 (92.3%) randomized to intravenous antibiotics (risk difference, 3.6%; 2-sided 95% confidence interval, −4.9% to 12.8%). Effects were consistent in the per-protocol population. Nonfatal serious adverse events occurred in 12/72 (16.7%) in the oral group and 13/77 (16.9%) in the intravenous group. Conclusions Oral antibiotics were noninferior to intravenous antibiotics for the early treatment of KLA