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3.
Ann Surg Oncol ; 31(5): 3249-3260, 2024 May.
Article in English | MEDLINE | ID: mdl-38294612

ABSTRACT

BACKGROUND: Despite existing society guidelines, management of pancreatic (PanNEN) and small bowel (SBNEN) neuroendocrine neoplasms remains inconsistent. The purpose of this study was to identify patient- and/or disease-specific characteristics associated with increased odds of being offered surgery for PanNEN and SBNEN. PATIENTS AND METHODS: The Surveillance, Epidemiology, and End Results (SEER) Program database and the National Cancer Database (NCDB) were queried for patients with PanNEN/SBNEN. Demographic and pathologic data were compared between patients who were offered surgery and those who were not. Multivariate logistic regression was performed to identify factors independently associated with being offered surgery. RESULTS: In SEER, there were 3641 patients with PanNEN (54.7% were offered surgery) and 5720 with SBNEN (86.0% were offered surgery). On multivariate analysis of SEER, non-white race was associated with decreased odds of surgery offer for SBNEN [odds ratio (OR) 0.58, p < 0.001], but not PanNEN (p = 0.187). In NCDB, there were 28,483 patients with PanNEN (57.5% were offered surgery) and 42,675 with SBNEN (86.9% were offered surgery). On multivariate analysis of NCDB, non-white race was also associated with decreased odds of surgery offer for SBNEN (OR 0.61, p < 0.001) but not PanNEN (p = 0.414). CONCLUSIONS: This study's findings suggest that, in addition to previously reported disparities in surgical resection and surgery refusal rates, racial/ethnic disparities also exist earlier in the course of treatment, with non-white patients being less likely to be offered surgery for SBNEN but not for PanNEN; this is potentially due to discrepancies in rates of referral to academic centers for pancreas and small bowel malignancies.


Subject(s)
Duodenal Neoplasms , Neuroendocrine Tumors , Pancreatic Neoplasms , Humans , White People , SEER Program , Pancreatic Neoplasms/pathology , Neuroendocrine Tumors/surgery , Pancreas/pathology
4.
Med Educ ; 58(2): 172-173, 2024 02.
Article in English | MEDLINE | ID: mdl-37973610
5.
HPB (Oxford) ; 25(12): 1545-1554, 2023 Dec.
Article in English | MEDLINE | ID: mdl-37626007

ABSTRACT

BACKGROUND: The impact of neighborhood deprivation on outcomes in patients with pancreatic ductal adenocarcinoma (PDAC) is not well-described and represents an area to improve disparities. METHODS: We retrospectively queried our prospectively maintained database of patients with PDAC (2014-2022). Patients were grouped by Area Deprivation Index (ADI) and rural-urban commuting area (RUCA) codes. Cox proportional hazards models and logistic regressions were used to investigate effect on overall survival (OS) and adjuvant therapy administration. RESULTS: 536 patients were included. High ADI patients (more disadvantaged, n = 184) were more likely to identify as non-Hispanic Black (17.9% vs. 4.8%, p < 0.01) and were more likely to be from rural areas (49.5% vs. 18.5%, p < 0.01). High ADI was independently associated with decreased OS (HR (95% CI): 1.31 (1.01-1.69), p = 0.04). Urban high ADI patients were 3.5 times more likely to receive adjuvant therapy than rural high ADI patients (OR [95% CI]: 3.48 [1.26-9.61], p = 0.02). CONCLUSION: Patients from the most disadvantaged neighborhoods have decreased OS. Access to adjuvant therapy likely contributes to this disparity in rural areas. Investigation into sources of this OS disparity and identification of barriers to adjuvant therapy will be crucial to improve outcomes in underserved patients with PDAC.


Subject(s)
Carcinoma, Pancreatic Ductal , Pancreatic Neoplasms , Humans , Retrospective Studies , Pancreatic Neoplasms/drug therapy , Carcinoma, Pancreatic Ductal/drug therapy , Combined Modality Therapy , Pancreatic Neoplasms
6.
J Am Coll Surg ; 237(3): 558-567, 2023 09 01.
Article in English | MEDLINE | ID: mdl-37204138

ABSTRACT

BACKGROUND: The preoperative period is an important target for interventions (eg Surgical Prehabilitation and Readiness [SPAR]) that can improve postoperative outcomes for older patients with comorbidities. STUDY DESIGN: To determine whether a preoperative multidisciplinary prehabilitation program (SPAR) reduces postoperative 30-day mortality and the need for non-home discharge in high-risk surgical patients, surgical patients enrolled in a prehabilitation program targeting physical activity, pulmonary function, nutrition, and mindfulness were compared with historical control patients from 1 institution's American College of Surgeons (ACS) NSQIP database. SPAR patients were propensity score-matched 1:3 to pre-SPAR NSQIP patients, and their outcomes were compared. The ACS NSQIP Surgical Risk Calculator was used to compare observed-to-expected ratios for postoperative outcomes. RESULTS: A total of 246 patients were enrolled in SPAR. A 6-month compliance audit revealed that overall patient adherence to the SPAR program was 89%. At the time of analysis, 118 SPAR patients underwent surgery with 30 days of follow-up. Compared with pre-SPAR NSQIP patients (n = 4,028), SPAR patients were significantly older with worse functional status and more comorbidities. Compared with propensity score-matched pre-SPAR NSQIP patients, SPAR patients had significantly decreased 30-day mortality (0% vs 4.1%, p = 0.036) and decreased need for discharge to postacute care facilities (6.5% vs 15.9%, p = 0.014). Similarly, SPAR patients exhibited decreased observed 30-day mortality (observed-to-expected ratio 0.41) and need for discharge to a facility (observed-to-expected ratio 0.56) compared with their expected outcomes using the ACS NSQIP Surgical Risk Calculator. CONCLUSIONS: The SPAR program is safe and feasible and may reduce postoperative mortality and the need for discharge to postacute care facilities in high-risk surgical patients.


Subject(s)
Patient Discharge , Postoperative Complications , Humans , Risk Assessment , Postoperative Complications/epidemiology , Postoperative Complications/prevention & control , Preoperative Exercise , Retrospective Studies , Quality Improvement
7.
J Surg Res ; 287: 149-159, 2023 07.
Article in English | MEDLINE | ID: mdl-36933546

ABSTRACT

INTRODUCTION: Due to the COVID-19 pandemic, the recruitment cycle for the 2021 Match was performed virtually. This Association for Surgical Education (ASE)-sponsored survey set out to study applicants' ability to assess the factors contributing to fit through video interviews. METHODS: An IRB-approved, online, anonymous survey was distributed to surgical applicants at a single academic institution and through the ASE clerkship director distribution list between the rank order list certification deadline and Match Day. Applicants used 5-point Likert-type scales to rate factors for importance to fit and their ease of assessment through video interviewing. A variety of recruitment activities were also rated by applicants for their perceived helpfulness in assessment of fit. RESULTS: One hundred and eighty-three applicants responded to the survey. The three most important factors for applicant fit were how much the program cared, how satisfied residents seem with their program, and how well residents get along. Resident rapport, diversity of the patient population, and quality of the facilities were hardest to assess through video interviews. In general, diversity-related factors were more important to female and non-White applicants, but not more difficult to assess. Interview day and resident-only virtual panels were the most helpful recruitment activities, while virtual campus tours, faculty-only panels, and a program's social media were the least helpful. CONCLUSIONS: This study provides valuable insight into the limitations of virtual recruitment for surgical applicants' perception of fit. These findings and the recommendations herein should be taken into consideration by residency program leadership to ensure successful recruitment of diverse residency classes.


Subject(s)
COVID-19 , Internship and Residency , Humans , Female , Pandemics , Interpersonal Relations , Personnel Selection , Surveys and Questionnaires
8.
HPB (Oxford) ; 25(1): 91-99, 2023 01.
Article in English | MEDLINE | ID: mdl-36272956

ABSTRACT

BACKGROUND: Decreased preoperative physical fitness and low physical activity have been associated with preoperative functional reserve and surgical complications. We sought to evaluate daily step count as a measure of physical activity and its relationship with post-pancreatectomy outcomes. METHODS: Patients undergoing pancreatectomy were given a remote telemonitoring device to measure their preoperative levels of physical activity. Patient activity, demographics, and perioperative outcomes were collected and compared in univariate and multivariate logistic regression analysis. RESULTS: 73 patients were included. 45 (61.6%) patients developed complications, with 17 (23.3%) of those patients developing severe complications. These patients walked 3437.8 (SD 1976.7) average daily steps, compared to 5918.8 (SD 2851.1) in patients without severe complications (p < 0.001). In logistic regression analysis, patients who walked less than 4274.5 steps had significantly higher odds of severe complications (OR = 7.5 (CI 2.1, 26.8), p = 0.002). CONCLUSION: Average daily steps below 4274.5 before surgery are associated with severe complications after pancreatectomy. Preoperative physical activity levels may represent a modifiable target for prehabilitation protocols.


Subject(s)
Pancreatectomy , Postoperative Complications , Humans , Pancreatectomy/adverse effects , Risk Factors , Postoperative Complications/etiology
9.
Cureus ; 14(11): e31703, 2022 Nov.
Article in English | MEDLINE | ID: mdl-36561587

ABSTRACT

PURPOSE: Residency recruitment events and interviews are widely considered an integral component of the residency match experience. Due to the COVID-19 pandemic, residency recruitment and interviewing throughout the 2020-2021 academic year were performed virtually, which created challenges for applicants' ability to discern "fit" to a program. Given this change, it is reasonable to suspect that applicants would be less able to discern program fit. Therefore, this study evaluated how virtual interviews impacted pediatric residency applicants' ability to assess factors contributing to fit and subsequently how applicants assessed their self-perceived fit to their top-ranked programs. METHODS: An online, anonymous survey was distributed to all residency applicants who applied to any specialty at our large academic institution. The survey utilized a 5-point Likert-type scale to evaluate qualities of fit as well as the applicants' self-perceived ability to assess these qualities through a virtual platform. RESULTS: 1,840 surveys were distributed, of which 473 residency applicants responded (25.7% response rate). Among these responses, 81 were pediatric applicants (27.6%). Factors deemed most important in determining fit included how well the residents get along with one another (98.8%), how much the program appeared to care about its trainees (97.5%), and how satisfied residents were with their program (97.5%). Qualities deemed most difficult for applicants to discern included the quality of facilities (18.6%), patient diversity (29.4%), and how well the residents got along with one another (30.2%). When compared to all other residency applicants, pediatric applicants placed more value on whether a program was family-friendly (p = 0.015), the quality of the facilities (p = 0.009), and the on-call system (p = 0.038). CONCLUSION: This study highlights factors that influence pediatric applicants' perception of fit into a program. Unfortunately, many factors deemed most important for pediatric applicants were also among the most difficult to assess virtually. These include resident camaraderie, whether a program cares about its residents, and overall resident satisfaction. Taken together, these findings and the recommendations presented should be considered by all residency program leaders to ensure the successful recruitment of a pediatric residency class.

10.
BMJ Case Rep ; 15(12)2022 Dec 22.
Article in English | MEDLINE | ID: mdl-36549753

ABSTRACT

Pancreatic acinar cell carcinoma is a rare type of pancreatic malignancy, which can be confused with pancreatic neuroendocrine neoplasm. Here, we describe a woman in her 80s who presented with abdominal pain and bilateral lower extremity panniculitis. She underwent surgery for a presumed diagnosis of neuroendocrine tumour with PTEN and PRKAR1A alterations; 19 months, later, a recurrence of her pancreatic malignancy was discovered. The patient underwent repeat resection and this time immunohistochemical staining confirmed the diagnosis of acinar cell carcinoma. Staining for acinar cell carcinoma should be prompted based on clinical suspicion in context of PTEN or PRKAR1A mutation when appropriate.


Subject(s)
Carcinoma, Acinar Cell , Neuroendocrine Tumors , Pancreatic Neoplasms , Panniculitis , Female , Humans , Carcinoma, Acinar Cell/complications , Carcinoma, Acinar Cell/diagnosis , Carcinoma, Acinar Cell/surgery , Panniculitis/diagnosis , Panniculitis/etiology , Panniculitis/pathology , Pancreatic Neoplasms/pathology , Diagnosis, Differential , Neuroendocrine Tumors/diagnosis , PTEN Phosphohydrolase/genetics , Cyclic AMP-Dependent Protein Kinase RIalpha Subunit , Pancreatic Neoplasms
11.
J Surg Educ ; 79(6): e116-e123, 2022.
Article in English | MEDLINE | ID: mdl-36068160

ABSTRACT

OBJECTIVE: The purpose of this study was to characterize the nondiscrimination and diversity, equity, and inclusion (DEI) statements found on the websites of general surgery residency programs, as well as to measure programmatic commitment to diversity through their involvement with special interest surgical societies (SISS). DESIGN: The authors evaluated the relationship between DEI statements and SISS participation, and performed a natural language processing analysis of general surgery residency DEI statements. SETTING: The residency program websites from 319 non-military general surgery residency programs within the United States were analyzed. PARTICIPANTS: This study evaluated the DEI statement and SISS participation in general surgery residency programs. RESULTS: Of the 319 general surgery residency websites reviewed, 127 (39.8%) featured an identifiable statement of nondiscrimination or commitment to diversity. Compared to programs without diversity statements, programs with statements were more likely to be involved with special interest surgical societies (53.5% vs 30.7%, p < 0.001). Natural language processing analysis revealed that the diversity statements of programs with SISS involvement had higher word counts (p = 0.001), higher clout scores (measure of confidence conveyed, p = 0.001), and higher positive tone scores (p = 0.006) compared with the statements of those without special interest society involvement. CONCLUSIONS: In the era of virtual interviewing, applicants are forced to rely heavily on surgery residency websites as their main source of information. Less than 40% of programs participating in the Match in 2022 feature diversity statements on their websites. Programs with some degree of involvement with special interest societies were more likely to have statements that score higher in confidence and positivity in natural language processing analysis, which may potentially reflect a more earnest commitment to diversity, equity, and inclusion. Residency programs should continue to improve the visibility of their DEI efforts to recruit a diverse resident class.


Subject(s)
Internship and Residency , Humans , Societies , Mental Processes
12.
HPB (Oxford) ; 24(7): 1162-1167, 2022 07.
Article in English | MEDLINE | ID: mdl-35012875

ABSTRACT

BACKGROUND: Multimodal analgesia and regional anesthetic blocks, such as transversus abdominis plane (TAP) block, decrease postoperative opiate consumption but their effect on intraoperative opiates is unknown. METHODS: This was a retrospective review of patients undergoing pancreatoduodenectomy between June 2018 and February 2021, in which perioperative data, operative times, and medication administration data were collected. Intraoperative opiate use was calculated in total morphine equivalent doses (MED) for each patient and adjusted for operative time. Univariate analysis and multivariate linear regression were performed to determine factors affecting intraoperative opiate requirements. RESULTS: Of the 169 patients in the study, 51 (30.2%) received pre-surgical TAP blocks and 118 (69.8%) did not. There were no statistically significant differences in intraoperative opiate use with preoperative acetaminophen (p = 0.527), celecoxib (p = 0.553), gabapentin (p = 0.308), intraoperative ketorolac (p = 0.698) or epidural placement (p = 0.086). Minimally invasive surgery had lower intraoperative opiate use compared to open (p = 0.011), as well as pre-surgical TAP block compared to no pre-surgical block (5.24 vs 7.27 MED/hour, p < 0.001). On multivariate linear regression, pre-surgical TAP block (p = 0.001) was independently associated with decreased intraoperative opiate use. CONCLUSION: Preoperative TAP blocks were associated with decreased intraoperative opiate use during pancreatoduodenectomy and should be considered for routine use.


Subject(s)
Nerve Block , Opiate Alkaloids , Abdominal Muscles , Analgesics, Opioid/therapeutic use , Humans , Morphine/therapeutic use , Nerve Block/adverse effects , Opiate Alkaloids/therapeutic use , Pain, Postoperative/diagnosis , Pain, Postoperative/etiology , Pain, Postoperative/prevention & control , Pancreaticoduodenectomy/adverse effects
13.
Med Educ ; 56(6): 641-650, 2022 06.
Article in English | MEDLINE | ID: mdl-35014076

ABSTRACT

INTRODUCTION: 'Fit' refers to an applicants' perceived compatibility to a residency programme. A variety of structural, identity-related and relational factors contribute to self-assessments of fit. The 2021 residency recruitment cycle in the USA was performed virtually due to the COVID-19 pandemic. Little is known about how video-interviewing may affect residency applicants' ability to gauge fit. METHODS: A multidisciplinary, anonymous survey was distributed to applicants at a large academic institution between rank order list (ROL) certification deadline and Match Day 2021. Using Likert-type scales, applicants rated factors for importance to 'fit' and their ease of assessment through video-interviewing. Applicants also self-assigned fit scores to the top-ranked programme in their ROL using Likert-type scales with pairs of anchoring statements. RESULTS: Four hundred seventy-three applicants responded to the survey (25.7% response rate). The three most important factors to applicants for assessment of fit (how much the programme seemed to care, how satisfied residents seem with their programme and how well the residents get along) were also the factors with the greatest discrepancy between importance and ease of assessment through video-interviewing. Diversity-related factors were more important to female applicants compared with males and to non-White applicants compared with White applicants. Furthermore, White male applicants self-assigned higher fit scores compared with other demographic groups. CONCLUSION: There is a marked discrepancy between the most important factors to applicants for fit and their ability to assess those factors virtually. Minoritised trainees self-assigned lower fit scores to their top-ranked programme, which should raise concern amongst medical educators and highlights the importance of expanding current diversity, equity and inclusion efforts in academic medicine.


Subject(s)
COVID-19 , Internship and Residency , COVID-19/epidemiology , Female , Humans , Male , Pandemics , Perception , Surveys and Questionnaires
14.
Surgery ; 171(3): 590-597, 2022 03.
Article in English | MEDLINE | ID: mdl-34895772

ABSTRACT

BACKGROUND: Oral examinations are not consistently included in third-year medical student clerkships. When included, they are often unstructured, leaving room for variations in difficulty or scoring. Previous research has demonstrated differences in clinical grade achievement, with underrepresented in medicine students receiving significantly lower grades than White students. METHODS: We designed a structured oral examination for third-year medical students on the surgery clerkship. Students completed 2 oral examination scenarios and were evaluated on their ability to complete a history and diagnostic workup, interpret laboratory and imaging results, and devise a treatment plan. Scores from our examination were compared to previous, unstructured oral examination scores and to student demographics. Students and faculty were surveyed regarding their experience. RESULTS: Third-year medical students demonstrated strong knowledge of multiple surgical diseases. The greatest number of errors occurred in treatment planning (P < .001). Third-year medical students receiving honors clerkship grades achieved higher percentages of correct items on their oral examination. (94.8% vs 90.4%) (P = .02). Evaluation of prior unstructured oral examinations found underrepresented in medicine students received lower scores than White students (P = .04). After implementation of our structured examination, no difference was seen between the scores of underrepresented in medicine and White students (P = .99). CONCLUSION: We implemented a standardized oral examination for third-year medical students on the surgery clerkship with student and faculty satisfaction and demonstrated the ability to determine domains of knowledge weakness. The application of our structured oral examination helped to address nonspecific grading practices and eliminate oral examination grade differences between underrepresented in medicine and White students.


Subject(s)
Clinical Clerkship , Clinical Competence , Education, Medical, Undergraduate , Ethnicity/psychology , General Surgery/education , Racial Groups/psychology , Attitude of Health Personnel , Female , Humans , Male
16.
Am J Surg ; 222(5): 964-968, 2021 Nov.
Article in English | MEDLINE | ID: mdl-33906729

ABSTRACT

BACKGROUND: Pancreaticoduodenectomy (PD) has a high rate of readmission, and racial disparities in care could be an important contributor. METHODS: Patients undergoing PD were prospectively followed, and their complications graded using the Modified Accordion Grading System (MAGS). Patient factors and perioperative outcomes for patients with and without postoperative readmission were compared in univariate and multivariate analysis by severity. RESULTS: 837 patients underwent PD, the overall 90-day readmission rate was 27.5%. Non-white race was independently associated with readmission (OR 1.83, p = 0.007). 51.3% of readmissions were for non-severe complications (MAGS <3). Non-white race was independently associated with MAGS non-severe readmission (OR 2.13, p = 0.006), but not MAGS severe readmission. CONCLUSIONS: Non-white patients are more likely to be readmitted, particularly for non-severe complications. Follow up protocols should be tailored to address race disparities in the rates of readmission as readmission for less severe complications could potentially be avoidable.


Subject(s)
Ambulatory Care , Healthcare Disparities/statistics & numerical data , Hospitals, Urban/statistics & numerical data , Pancreaticoduodenectomy/adverse effects , Patient Readmission/statistics & numerical data , Racial Groups/statistics & numerical data , Tertiary Care Centers/statistics & numerical data , Ambulatory Care/statistics & numerical data , Female , Humans , Male , Middle Aged , Pancreaticoduodenectomy/statistics & numerical data , Risk Factors
17.
Surg Technol Int ; 38: 98-101, 2021 05 20.
Article in English | MEDLINE | ID: mdl-33724433

ABSTRACT

BACKGROUND: Surgery involving the biliary tree is common but has the potential for serious complications. Adjuncts such as intraoperative cholangiogram and, more recently, indocyanine green (ICG) fluorescence cholangiography, have been used to more accurately define the relevant anatomy and decrease the risk of common bile duct injury. The optimal ICG dose is unknown, but the most commonly cited dose in the literature is 2.5 mg. We describe our experience using micro-dosing of ICG as proof-of-concept for its successful use in the identification of biliary structures. METHODS: A video library from a variety of hepatobiliary surgeries which included micro-dosing of ICG was compiled between 2018 and 2020. These videos were retrospectively reviewed and graded for the degree of visualization of biliary structures (complete, partial, none) and the degree of background liver fluorescence (significant, moderate, minimal). RESULTS: Overall, 40 videos were reviewed; 70% were minimally invasive cholecystectomies. Micro-dosing was used in all patients; complete visualization was achieved in 52.5% of the patients, partial visualization in 40%, and no visualization in 7.6%. Eighty percent of patients had minimal to moderate background fluorescence. Despite ICG micro-dosing, 20% of the patients still had significant liver dye uptake. CONCLUSION: ICG cholangiography is an alternative to more invasive means of intraoperative imaging during biliary surgery, but the optimal dose of ICG is unknown. We have used a 0.05 mg micro-dose of ICG to successfully visualize biliary structures and reduce background liver fluorescence. This preliminary report can be used to develop further studies into whether micro-dosing of ICG is associated with improved clinical outcomes.


Subject(s)
Biliary Tract , Cholecystectomy, Laparoscopic , Biliary Tract/diagnostic imaging , Cholangiography , Coloring Agents , Humans , Indocyanine Green , Retrospective Studies
18.
Surg Endosc ; 33(6): 1938-1943, 2019 06.
Article in English | MEDLINE | ID: mdl-30350099

ABSTRACT

INTRODUCTION: Traditional laparoscopic surgery (TLS) has increasingly been associated with physical muscle strain for the operating surgeon. Robot-assisted laparoscopic surgery (RALS) may offer improved ergonomics. Ergonomics for the surgeon on these two platforms can be compared using surface electromyography (sEMG) to measure muscle activation, and the National Aeronautics and Space Administration Task Load Index (NTLX) survey to assess workload subjectively. METHODS: Subjects were recruited and divided into groups according to level of expertise in traditional laparoscopic (TLS) and robot-assisted laparoscopic surgery (RALS): novice, traditional laparoscopic surgeons (TL surgeons), robot-assisted laparoscopic surgeons (RAL surgeons). Each subject performed three fundamentals of laparoscopic surgery (FLS) tasks in randomized order while sEMG data were obtained from bilateral biceps, triceps, deltoid, and trapezius muscles. After completing all tasks, subjects completed the NTLX survey. sEMG data normalized to the maximum voluntary contraction of each muscle (MVC%), and NTLX data were compared with unpaired t tests and considered significant with a p ≤ 0.05. RESULTS: Muscle activation was higher during TLS compared to RALS in most muscle groups for novices except for the trapezius muscles. Muscle activation scores were also higher for TLS among the groups with more experience, but the differences were less significant. NTLX scores were higher for the TLS platform compared to the RALS platform for novices. DISCUSSION: TLS is associated with higher muscle activation in all muscle groups except for trapezius muscles, suggesting greater strain on the surgeon. Increased trapezius muscle activation on RALS has previously been documented and is likely due to the position of the eye piece. The differences seen in muscle activation diminish with increasing levels of expertise. Experience likely mitigates the ergonomic disadvantage of TLS. NTLX survey data suggest there are subjective benefits to RALS, namely in the perception of temporal demand. Further research to correlate NTLX data and sEMG measurements, and to investigate whether these metrics affect patient outcomes is warranted.


Subject(s)
Clinical Competence , Ergonomics , Laparoscopy , Muscle Contraction/physiology , Robotic Surgical Procedures , Electromyography , Humans , Muscle, Skeletal/physiology , Stress, Physiological/physiology , Surgeons
19.
Cell ; 158(4): 705-721, 2014 Aug 14.
Article in English | MEDLINE | ID: mdl-25126780

ABSTRACT

Acquisition of the intestinal microbiota begins at birth, and a stable microbial community develops from a succession of key organisms. Disruption of the microbiota during maturation by low-dose antibiotic exposure can alter host metabolism and adiposity. We now show that low-dose penicillin (LDP), delivered from birth, induces metabolic alterations and affects ileal expression of genes involved in immunity. LDP that is limited to early life transiently perturbs the microbiota, which is sufficient to induce sustained effects on body composition, indicating that microbiota interactions in infancy may be critical determinants of long-term host metabolic effects. In addition, LDP enhances the effect of high-fat diet induced obesity. The growth promotion phenotype is transferrable to germ-free hosts by LDP-selected microbiota, showing that the altered microbiota, not antibiotics per se, play a causal role. These studies characterize important variables in early-life microbe-host metabolic interaction and identify several taxa consistently linked with metabolic alterations. PAPERCLIP:


Subject(s)
Anti-Bacterial Agents/administration & dosage , Disease Models, Animal , Intestines/microbiology , Microbiota , Obesity/microbiology , Penicillins/administration & dosage , Animals , Bacteria/classification , Bacteria/metabolism , Female , Intestinal Mucosa/metabolism , Male , Mice , Mice, Inbred C57BL , Microbiota/drug effects , Obesity/metabolism
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