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Choi, E.,Petersen, C.P.,Lapierre, L.A.,Williams, J.A.,Weis, V.G.,Goldenring, J.R.,Nam, K.T. American Association of Pathologists and Bacteriol 2015 The American journal of pathology Vol.185 No.8
Doublecortin-like kinase 1 (Dclk1) is considered a reliable marker for tuft cells in the gastrointestinal tract. We investigated the dynamic changes of tuft cells associated with mouse models of oxyntic atrophy and metaplasia in the stomach. Increases in the numbers of Dclk1-positive tuft cells were observed in several models of parietal cell loss. However, the expanded population of Dclk1-expressing cells showed a morphologically distinct structure in apical microvilli and acetylated microtubules, which was not seen in the tuft cells present in the normal gastric mucosa. These microvillar sensory cells (MVSCs) showed no evidence of proliferation. The expansion of the MVSCs induced by oxyntic atrophy was reversible after the return of parietal cells. More important, expansion of MVSCs after induced parietal cell loss was not observed in Gast<SUP>-/-</SUP> mice. Although the Dclk1-expressing cells in the normal gastric mucosa were in part derived from Lrig1-expressing stem cells, the Lrig1-lineaged cells did not produce the expanded Dclk1-expressing cells associated with oxyntic atrophy. These studies indicate that loss of parietal cells leads to the reversible emergence of a novel Dclk1-expressing sensory cell population in the gastric mucosa.
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( James E. Feng ),( Afshin A. Anoushiravani ),( Jessica S. Morton ),( William Petersen ),( Vivek Singh ),( Ran Schwarzkopf ),( William Macaulay ) 대한슬관절학회 2022 대한슬관절학회지 Vol.34 No.-
Purpose: A better understanding of total knee arthroplasty (TKA) candidate expectations within the perioperative setting will enable clinicians to promote patient-centered practices, optimize recovery times, and enhance quality metrics. In the current study, TKA candidates were surveyed pre- and postoperatively to elucidate the relationship between patient expectations and length of stay (LOS). Material and methods: This is a prospective study of patients undergoing TKA between December 2017 and August 2018. Patients were electronically administered surveys regarding their discharge plan 10 days pre-/postoperatively. All patients were categorized into three cohorts based on their LOS: 1, 2, and 3+ days. The effect of preoperative discharge education on patient postoperative satisfaction was evaluated. Results: In total, 221 TKAs were included, of which 83 were discharged on postoperative day (POD) 1, 96 on POD-2, and 42 POD-3+. Female gender, increasing body mass index (BMI), and surgical time correlated with increased LOS. Preoperative discussions regarding LOS occurred in 84.62% (187/221) of patients but did correlate with differences in LOS. However, patients discharged on POD-1 were more inclined to same-day surgery preoperatively. Patients discharged on POD-3+ were found to be more uncomfortable regarding their discharge during the preoperative phase. Multivariable regressions demonstrated that preoperative discharge discussion was positively correlated with home discharge. Conclusion: Physician-driven discussion regarding patient discharge did not alter patient satisfaction or length of stay but did correlate with improved odds of home discharge. These findings underscore the importance of patient education, shared decision-making, and managing patient expectations.
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( Yeonjung Ha ),( Mohamed A. Mohamed Ali ),( Molly M. Petersen ),( William S. Harmsen ),( Terry M. Therneau ),( Han Chu Lee ),( Baek-yeol Ryoo ),( Sally Bampoh ),( Kenneth A. Valles ),( Mohamad Mady ) 대한간학회 2020 춘·추계 학술대회 (KASL) Vol.2020 No.1
Aims: The ability of the pretreatment lymphocyte to monocyte ratio (LMR) to predict outcomes of patients with hepatocellular carcinoma (HCC) receiving sorafenib is not conclusively determined. Methods: We retrospectively studied patients treated with sorafenib for HCC in two tertiary referral centres in Asia and North America. Primary endpoints were overall survival (OS) and progression-free survival (PFS). Predictive factors for the outcomes were determined by Cox proportional hazards models. A risk-assessment tool was developed. Results: Compared to the North America cohort, the Asia cohort was more heavily pretreated (72.1% vs. 35.2%; P<0.001), had higher hepatitis B virus infection (87.6% vs. 5.6%; P<0.001), and more distant metastases (83.2% vs. 25.4%; P<0.001). Lower monocyte count in the Asia cohort (median, 462.7 vs. 600.0/μL; P=0.023) resulted in a higher LMR (median, 2.6 vs. 1.8; P<0.001). High LMR was associated with a significantly higher OS (hazard ratio [HR], 0.88; 95% confidence interval [CI], 0.81-0.97; P=0.007). This was confirmed in a sensitivity analysis including patients treated in Asia only (HR, 0.89; 95% CI, 0.81-0.97; P=0.010). An OS nomogram was constructed with following variables selected in the multivariate Cox model: LMR, treatment location, previous treatment, performance status, AFP, lymph node metastasis, and Child-Pugh score. The concordance score was 0.71 (95% CI, 0.69-0.73). LMR did not predict PFS. Conclusions: Pretreatment LMR predicts OS in HCC patients treated with sorafenib. Our OS nomogram, incorporating LMR, can be offered to clinicians to improve their ability to assess prognosis, strengthen the prognosis-based decision making, and inform patients in the clinic.
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Gabriella F. Bulman,Ronik S. Bhangoo,Todd A. DeWees,Molly M. Petersen,Cameron S. Thorpe,William W. Wong,Jean Claude M. Rwigema,Thomas B. Daniels,Sameer R. Keole,Steven E. Schild,Carlos E. Vargas 대한방사선종양학회 2021 Radiation Oncology Journal Vol.39 No.2
Purpose: To analyze rectal dose and changes in quality of life (QOL) measured with the Expanded Prostate and Cancer Index Composite (EPIC) bowel domain in patients being treated for prostate cancer with curative-intent proton beam therapy (PBT) within a large single-institution prospective registry. Materials and Methods: Data was collected from 243 patients with localized prostate cancer treated with PBT from 2016 to 2018. The EPIC survey was administered at baseline, end-of-treatment, 3, 6, and 12 months, then annually. Dose-volume histogram (DVH) parameters for the rectum were computed, and rectal dose was analyzed using BED (α/β = 3), EQD2Gy, and total dose. Repeated measures mixed models were implemented to determine the effect of patient, clinical, and treatment factors (including DVH) on patient-reported bowel symptom burden (EPIC-Bowel). Results: Treatment overall resulted in changes in EPIC-Bowel scores (baseline score = 93.7), most notably at end-of-treatment (90.6) and 12 months (89.7). However, they returned to baseline at 36 months (92.9). On multivariate modeling, rectal BED D25 (Gy) ≥23% was significantly associated with decline in QOL scores measuring bother (p < 0.01; 4.06 points different). Conclusion: Rectal doses, specifically BED D25 (Gy) ≥23%, are significantly associated with decline in bowel bother-related QOL in patients undergoing definitive radiotherapy for localized prostate cancer. This study demonstrates BED as an independent predictor of bowel QOL across dose fractionations of PBT.
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