Browsing by Author "Colgate, Cameron"

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    Chondroitin sulfate supplementation improves clinical outcomes in a murine model of necrotizing enterocolitis
    (Wiley, 2023) Manohar, Krishna; Hosfield, Brian D.; Mesfin, Fikir M.; Colgate, Cameron; Shelley, William Christopher; Liu, Jianyun; Zeng, Lifan; Brokaw, John P.; Markel, Troy A.; Surgery, School of Medicine
    Necrotizing enterocolitis (NEC) continues to be a devastating disease in preterm neonates and has a paucity of medical management options. Chondroitin sulfate (CS) is a naturally occurring glycosaminoglycan (GAG) in human breast milk (HM) and has been shown to reduce inflammation. We hypothesized that supplementation with CS in an experimental NEC model would alter microbial diversity, favorably alter the cytokine profile, and (like other sulfur compounds) improve outcomes in experimental NEC via the eNOS pathway. NEC was induced in 5-day-old pups. Six groups were studied (n = 9-15/group): (1) WT breastfed and (2) Formula fed controls, (3) WT NEC, (4) WT NEC + CS, (5) eNOS KO (knockout) NEC, and (6) eNOS KO NEC + CS. Pups were monitored for clinical sickness score and weights. On postnatal day 9, the pups were killed. Stool was collected from rectum and microbiome analysis was done with 16 s rRNA sequencing. Intestinal segments were examined histologically using a well-established injury scoring system and segments were homogenized and analyzed for cytokine profile. Data were analyzed using GraphPad Prism with p < 0.05 considered significant. CS supplementation in formula improved experimental NEC outcomes when compared to NEC alone. CS supplementation resulted in similar improvement in NEC in both the WT and eNOS KO mice. CS supplementation did not result in microbial changes when compared to NEC alone. Our data suggest that although CS supplementation improved outcomes in NEC, this protection is not conferred via the eNOS pathway or alteration of microbial diversity. CS therapy in NEC does improve the intestinal cytokine profile and further experiments will explore the mechanistic role of CS in altering immune pathways in this disease.
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    Novel Preoperative Patient-centered Surgical Wellness Program Impacts Length of Stay Following Pancreatectomy
    (International Institute of Anticancer Research, 2021-04) Soufi, Mazhar; Deperalta, Danielle K.; Simpson, Rachel; Flick, Katelyn; Yip-Schneider, Michele T.; Schmidt, Christian M., II; Kilbane, Molly; Colgate, Cameron; Kelley, Kristen E.; Wooden, William; Ceppa, Eugene P.; House, Michael; Zyromski, Nicholas; Nakeeb, Atilla; Schmidt, C. Max; Surgery, School of Medicine
    Background/Aim: We created a novel, preoperative wellness program (WP) that promotes recovery. This study assessed its impact on patient outcomes after pancreatectomy. Patients and Methods: Pancreatoduodenectomies (PD) and distal pancreatectomies (DP) performed from 2015 to 2018 were reviewed using our institutional NSQIP database. Patients in the WP had their medical conditions optimized and were provided with the following: chlorhexidine, topical mupirocin, incentive spirometer, and immune-nutrition supplements. Results: Out of a total of 669 pancreatectomy patients (411 PD, 258 DP), 308 were enrolled in the WP (188 PD, 120 DP). In the PD subgroup, on multivariable analysis (MVA), the WP patients had shorter lengths of hospital stay (LOS) (12 vs. 10 days, p<0.001). On MVA, WP patients had less post-op transfusion (20 vs. 10%, p=0.027). For the combined groups on MVA, LOS continued to be significant (OR=0.89, 95%CI=0.82-0.97, p<0.007). Conclusion: A preoperative patient centered WP may reduce the length of stay.
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    Pediatric Complicated Appendicitis During the COVID-19 Pandemic: A National Perspective
    (Elsevier, 2021-11) Hafezi, Niloufar; Pecoraro, Anthony; Landman, Matthew P.; Colgate, Cameron; Rescorla, Frederick J.; Pediatrics, School of Medicine
    Introduction: The COVID-19 pandemic has changed the public’s perception of safety in accessing healthcare across common surgical emergencies, including acute appendicitis in children. Here, we aim to determine whether the COVID-19 pandemic is associated with poorer appendicitis outcomes and predict that there are higher complicated appendicitis (CA) rates during this time. Methods: A retrospective cohort study was conducted in patients younger than 19 years with a new diagnosis of acute appendicitis. Rates of CA were compared in the pre- (3/1/2019-5/31/2019) and post-COVID (3/1/2020-5/31/2020) timeframes using the Pediatric Health Information System national database. The primary end point of interest was CA rates. Secondary end point of interest was hospital length of stay. A p value < 0.05 was significant. Results: Nationally, 6,212 patients had acute appendicitis pre-COVID compared with 5,372 post-COVID. The CA rate post-COVID was 33%, which was significantly higher than 30% CA rate pre-COVID, and the rate of uncomplicated appendicitis post-COVID was lower (p < 0.001). An overall increase in hospital length of stay nationally was observed for all patients treated post-COVID (p < 0.001), as well as in those with CA (p < 0.001). Conclusion: The COVID-19 pandemic is directly associated with higher disease burden in pediatric acute appendicitis. The healthcare system must understand its role in alleviating public fear in seeking healthcare for patients and their families to encourage timely medical care.