Toward Better Understanding of Pediatric Feeding Disorder: A Proposed Framework for Patient Characterization.

To establish a foundation for methodologically sound research on the epidemiology, assessment, and treatment of pediatric feeding disorder (PFD), a 28-member multidisciplinary panel with equal representation from medicine, nutrition, feeding skill, and psychology from seven national feeding programs convened to develop a case report form (CRF). This process relied upon recent advances in defining PFD, a review of the extant literature, expert consensus regarding best practices, and review of current patient characterization templates at participating institutions. The resultant PFD CRF involves patient characterization in four domains (ie, medical, nutrition, feeding skill, and psychosocial) and identifies the primary features of a feeding disorder based on PFD diagnostic criteria. A corresponding protocol provides guidance for completing the assessment process across the four domains. The PFD CRF promotes a standard procedure to support patient characterization, enhance methodological rigor, and provide a useful clinical tool for providers and researchers working with these disorders.

Immunofluorescence assay for demyelination, remyelination, and proliferation in an acute cuprizone mouse model.

Here, we present a protocol to assess demyelination in the corpus callosum of an acute cuprizone mouse model, which is routinely used to induce demyelination for studying myelin regeneration in the rodent brain. We describe the tracing of neural stem cells via intraperitoneal injection of tamoxifen into adult Gli1CreERT2;Ai9 mice and the induction of demyelination with cuprizone diet. We also detail EdU administration, cryosectioning of the mouse brain, EdU labeling, and immunofluorescence staining to examine proliferation and myelination. For complete details on the use and execution of this protocol, please refer to Radecki et al. (2020).1.

Relative Levels of Gli1 and Gli2 Determine the Response of Ventral Neural Stem Cells to Demyelination.

Enhancing repair of myelin is an important therapeutic goal in many neurological disorders characterized by demyelination. In the healthy adult brain, ventral neural stem cells (vNSCs) in the subventricular zone, marked by GLI1 expression, do not generate oligodendrocytes. However, in response to demyelination, their progeny are recruited to lesions where they differentiate into oligodendrocytes and ablation of GLI1 further enhances remyelination. GLI1 and GLI2 are closely related transcriptional activators but the role of GLI2 in remyelination by vNSCs is not clear. Here, we show that genetic ablation of Gli1 in vNSCs increases GLI2 expression and combined loss of both transcription factors decreases the recruitment and differentiation of their progeny in demyelinated lesions. These results indicate that GLI1 and GLI2 have distinct, non-redundant functions in vNSCs and their relative levels play an essential role in the response to demyelination.

Use of behavioral interventions and parent education to address feeding difficulties in young children with spastic diplegic cerebral palsy.

The purpose of this study was to assess the effectiveness of an intensive day patient pediatric feeding program using oral motor exercises, behavioral interventions, and parental education to increase the oral feeding of children with spastic diplegic cerebral palsy. Eight children between the ages of 18 months to 4.7 years participated in the feeding program for an average of 5.8 weeks. The program consisted of structured oral motor exercises, rewards for reinforcement of appropriate feeding behaviors such as accepting food, chewing, and swallowing, as well as extinction for inappropriate feeding responses. Results show improvement in mealtime skills and behaviors necessary for increasing oral intake. There was improvement in ability to open the mouth for the presentation of the food as well as improved timeliness of swallowing without gagging, expelling or holding food in the mouth. The children were able to tolerate longer meal sessions and consume a greater quantity of food resulting in greater caloric consumption. The children who were tube fed at admission were able to decrease the amount of tube supplementation due to their improved oral intake. Caregivers improved in their ability to feed their children by providing appropriate instructions, prompts and consequences (IPC) during meals.

The mobile army surgical hospital humanitarian assistance mission in Pakistan: the primary care experience.

Military surgical field hospitals are frequently deployed for humanitarian missions. Current Department of Defense doctrine and World Health Organization policy question the appropriateness of their use, because the majority of patients require nonsurgical care. We describe our experiences during the deployment of a mobile army surgical hospital in response to the October 8, 2005, earthquake in Pakistan. More than 20,000 patients received care during a 4-month period. An initially high surgical workload quickly decreased while the volume of primary care patients increased, eventually accounting for 90% of patient visits. Our experience supports deploying primary care-oriented units for humanitarian missions.