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1.
World J Radiol ; 16(8): 371-374, 2024 Aug 28.
Article in English | MEDLINE | ID: mdl-39239240

ABSTRACT

Radiologists play a key role in establishing an early and accurate diagnosis, especially for rare diseases. Mahvash disease (OMIM 619290) is an autosomal recessive hereditary disease caused by inactivating mutations of the glucagon receptor and its main clinical consequences are pancreatic neuroendocrine tumors and in some cases, porto-sinusoidal vascular disease and portal hypertension. Untreated Mahvash disease can be lethal. The diagnosis of Mahvash disease has almost always been delayed in the past due to radiologists' unawareness of or unfamiliarity with the unique imaging features of Mahvash disease which are moderately to enormously enlarge pancreas with preserved pancreas contour and parenchyma without vascular involvement or lymphadenopathy. These features help differentiate Mahvash disease from other etiologies of diffusely enlarged pancreas such as diffuse pancreatic ductal carcinoma, diffuse pancreatic lymphoma, and autoimmune pancreatitis. Invoking Mahvash disease in the differential diagnosis of an enlarged pancreas has recently been shown to facilitate early diagnosis. To prevent missing the diagnosis of this significant disease, I sincerely ask radiologists to consider Mahvash disease in their differential diagnoses of diffusely enlarged pancreas.

2.
Cell Mol Biol Lett ; 29(1): 120, 2024 Sep 08.
Article in English | MEDLINE | ID: mdl-39245718

ABSTRACT

Glucokinase (GCK), a key enzyme in glucose metabolism, plays a central role in glucose sensing and insulin secretion in pancreatic ß-cells, as well as glycogen synthesis in the liver. Mutations in the GCK gene have been associated with various monogenic diabetes (MD) disorders, including permanent neonatal diabetes mellitus (PNDM) and maturity-onset diabetes of the young (MODY), highlighting its importance in maintaining glucose homeostasis. Additionally, GCK gain-of-function mutations lead to a rare congenital form of hyperinsulinism known as hyperinsulinemic hypoglycemia (HH), characterized by increased enzymatic activity and increased glucose sensitivity in pancreatic ß-cells. This review offers a comprehensive exploration of the critical role played by the GCK gene in diabetes development, shedding light on its expression patterns, regulatory mechanisms, and diverse forms of associated monogenic disorders. Structural and mechanistic insights into GCK's involvement in glucose metabolism are discussed, emphasizing its significance in insulin secretion and glycogen synthesis. Animal models have provided valuable insights into the physiological consequences of GCK mutations, although challenges remain in accurately recapitulating human disease phenotypes. In addition, the potential of human pluripotent stem cell (hPSC) technology in overcoming current model limitations is discussed, offering a promising avenue for studying GCK-related diseases at the molecular level. Ultimately, a deeper understanding of GCK's multifaceted role in glucose metabolism and its dysregulation in disease states holds implications for developing targeted therapeutic interventions for diabetes and related disorders.


Subject(s)
Glucokinase , Humans , Glucokinase/metabolism , Glucokinase/genetics , Animals , Mutation/genetics , Diabetes Mellitus/genetics , Diabetes Mellitus/metabolism , Diabetes Mellitus, Type 2/genetics , Diabetes Mellitus, Type 2/metabolism , Glucose/metabolism , Insulin-Secreting Cells/metabolism , Insulin-Secreting Cells/pathology
3.
Ann Gastroenterol Surg ; 8(5): 860-867, 2024 Sep.
Article in English | MEDLINE | ID: mdl-39229551

ABSTRACT

Aim: Pancreatic reconstruction after pancreaticoduodenectomy (PD) that leaves a small remnant pancreas is often difficult. Pancreatic fistula is a major complication after PD, and fistulas are rare in patients with hard pancreas. However, the clinical impact of non-reconstructed small remnant after PD with hard pancreas is unknown. Methods: We included all patients who underwent PD for pancreatic tumor without pancreatic reconstruction in two institutions supervised by one surgeon between January 2004 and March 2021. Their short- or long-term outcome after surgery was retrospectively analyzed. Results: PD was performed in 774 patients, of whom 16 patients were without reconstruction (2.1%) with negative margins at the pancreatic stump. Pancreatic transection was performed above or to the left of the superior mesenteric artery, with a median remnant pancreas length of 3.7 cm (range, 1.3-10.0). A major complication (≥ Clavien-Dindo Grade IIIa) occurred in one patient (6%). Fistula of grade B occurred in one patient (6%). After a median follow-up of 44 months (95%CI, 10.6-77.3), insulin administration was unnecessary in 11 patients. Conclusion: The preservation of a small pancreatic remnant without reconstruction after PD can be performed safely and may enable the keeping of pancreatic endocrine function for some selected patients with hard pancreas.

4.
Can J Diabetes ; 2024 Sep 03.
Article in English | MEDLINE | ID: mdl-39236999

ABSTRACT

BACKGROUND: Closed-loop insulin delivery has the potential to offer women with type 1 diabetes a break from intense diabetes self-care efforts during postpartum. AIMS: To explore the views and opinions of hybrid closed-loop users and their partners in the first 24 weeks postpartum. METHODS: This qualitative study was embedded in a controlled study of women with type 1 diabetes randomized to (MiniMed™ 670G/770G) closed-loop insulin delivery or sensor augmented pump use 1-11 weeks 6 days postpartum, with all on closed-loop from 12 to 24 weeks postpartum. Semi-structured interviews were conducted with 16 study participants and their partners at 12 and 24 weeks postpartum. Thematic analyses were used to examine participants' and partners' experiences. RESULTS: Participants' positive perceptions of the closed-loop use related to reduced hypoglycemia, in contrast to previous experiences with nonautomated insulin delivery. These were balanced against frustrations with the system allowing blood glucose levels to be above what they desired. Closed-loop use did not influence infant feeding choice. Yet, infant feeding and care impacted participants' diabetes management. Partners expressed uncertainty about the closed-loop taking away control from participants who were highly skilled with diabetes self-management. CONCLUSIONS: Participants reported that the closed-loop resulted in less time spent in hypoglycemia; compared to previously used nonautomated insulin delivery. Yet, participants desired greater understanding into the workings of the closed-loop algorithm. This study provides potential users with realistic expectations about the user experience with the MiniMed™ 670G/770G closed-loop in the postpartum period.

5.
Surg Clin North Am ; 104(5): 1095-1111, 2024 Oct.
Article in English | MEDLINE | ID: mdl-39237166

ABSTRACT

This article presents updates in the surgical management of non-functional sporadic pancreas neuroendocrine tumors NET, including considerations for assessment of biologic behavior to support decision-making, indications for surgery, and surgical approaches tailored to the unique nature of neuroendocrine tumors.


Subject(s)
Neuroendocrine Tumors , Pancreatectomy , Pancreatic Neoplasms , Humans , Pancreatic Neoplasms/surgery , Pancreatic Neoplasms/therapy , Pancreatic Neoplasms/diagnosis , Pancreatectomy/methods , Neuroendocrine Tumors/surgery , Neuroendocrine Tumors/therapy , Neuroendocrine Tumors/diagnosis
6.
Surg Clin North Am ; 104(5): 1007-1016, 2024 Oct.
Article in English | MEDLINE | ID: mdl-39237160

ABSTRACT

Pancreatic adenocarcinoma remains a deadly disease with 5 year overall survival of 10% among all stages. Standard of care for resectable disease remains surgical resection and adjuvant systemic therapy, but paradigms for borderline resectable and unresectable cases remain more nuanced. Radiation has been explored in the neoadjuvant, adjuvant, and definitive settings in a variety of randomized and non-randomized trials with mixed results. There is strong evidence to support the use of neoadjuvant radiation for borderline resectable pancreatic cancer. Utilization of radiation in the adjuvant setting remains unclear while the results of radiation therapy oncology group (RTOG) 0848 are pending.


Subject(s)
Adenocarcinoma , Pancreatic Neoplasms , Radiotherapy , Pancreatic Neoplasms/pathology , Pancreatic Neoplasms/radiotherapy , Pancreatic Neoplasms/surgery , Adenocarcinoma/pathology , Adenocarcinoma/radiotherapy , Adenocarcinoma/surgery , Neoadjuvant Therapy , Radiotherapy/standards , Radiotherapy/trends , Radiotherapy, Adjuvant , Humans
7.
Surg Clin North Am ; 104(5): 951-964, 2024 Oct.
Article in English | MEDLINE | ID: mdl-39237170

ABSTRACT

Pancreatic ductal adenocarcinoma (PDAC) continues to remain one of the leading causes of cancer-related death. Unlike other malignancies where universal screening is recommended, the same cannot be said for PDAC. The purpose of this study is to review which patients are at high risk of developing PDAC and therefore candidates for screening, methods/frequency of screening, and risk for these groups of patients.


Subject(s)
Carcinoma, Pancreatic Ductal , Early Detection of Cancer , Pancreatic Neoplasms , Humans , Pancreatic Neoplasms/diagnosis , Early Detection of Cancer/methods , Carcinoma, Pancreatic Ductal/diagnosis , Risk Factors , Mass Screening/methods , Risk Assessment/methods
8.
Surg Clin North Am ; 104(5): 1083-1093, 2024 Oct.
Article in English | MEDLINE | ID: mdl-39237165

ABSTRACT

Minimally invasive procedures minimize trauma to the human body while maintaining satisfactory therapeutic results. Minimally invasive pancreas surgery (MIPS) was introduced in 1994, but questions regarding its efficacy compared to an open approach were widespread. MIPS is associated with several perioperative advantages while maintaining oncological standards when performed by surgeons with a robust training regimen and frequent practice. Future research should focus on addressing learning curve discrepancies while identifying factors associated with shortening the time needed to attain technical proficiency.


Subject(s)
Minimally Invasive Surgical Procedures , Pancreatectomy , Humans , Minimally Invasive Surgical Procedures/methods , Pancreatectomy/methods , Pancreatic Neoplasms/surgery , Laparoscopy/methods , Robotic Surgical Procedures/methods , Pancreas/surgery , Learning Curve
9.
Surg Clin North Am ; 104(5): 1113-1120, 2024 Oct.
Article in English | MEDLINE | ID: mdl-39237167

ABSTRACT

Grade C pancreatic fistulas are associated with severe morbidity and a significant risk of mortality. High-risk pancreatic anastomoses can be predicted to allow best practice fistula mitigation techniques. In these high-risk glands, any deviation from a stable postoperative clinical course should prompt early computed tomography and aggressive, percutaneous drainage of the operative bed. If salvage surgery is necessary, drainage of the operative bed and/or external diversion of pancreatic juice via stenting while completion pancreatectomy should be avoided. Senior mentorship in the perioperative period offers an opportunity to decrease this complication even in early career surgeons.


Subject(s)
Pancreatic Fistula , Humans , Pancreatic Fistula/etiology , Pancreatic Fistula/prevention & control , Pancreatic Fistula/diagnosis , Pancreatectomy/methods , Drainage/methods , Postoperative Complications/etiology , Anastomosis, Surgical/methods
10.
Biofabrication ; 2024 Sep 10.
Article in English | MEDLINE | ID: mdl-39255833

ABSTRACT

The transplantation of islet beta cells offers an alternative to heterotopic islet transplantation for treating type 1 diabetes mellitus (T1DM). However, the use of systemic immunosuppressive drugs in islet transplantation poses significant risks to the body. To address this issue, we constructed an encapsulated hybrid scaffold loaded with islet beta cells. This article focuses on the preparation of the encapsulated structure using 3D printing, which incorporates porcine pancreas decellularized extracellular matrix (dECM) to the core scaffold. The improved decellularization method successfully preserved a substantial proportion of protein (such as Collagen I and Laminins) architecture and glycosaminoglycans in the dECM hydrogel, while effectively removing most of the DNA. The inclusion of dECM enhanced the physical and chemical properties of the scaffold, resulting in a porosity of 83.62±1.09% and a tensile stress of 1.85±0.16 MPa. In teams of biological activity, dECM demonstrated enhanced proliferation, differentiation, and expression of transcription factors such as Ki67, PDX1, and NKX6.1, leading to improved insulin secretion function in MIN-6 pancreatic beta cells. In the glucose-stimulated insulin secretion (GSIS) experiment on day 21, the maximum insulin secretion from the encapsulated structure reached 1.96±0.08 mIU/mL, representing a 44% increase compared to the control group. Furthermore, conventional capsule scaffolds leaverage the compatibility of natural biomaterials with macrophages to mitigate immune rejection. Here, incorporating curcumin into the capsule scaffold significantly reduced the secretion of pro-inflammatory cytokine (IL-1ß, IL-6, TNF-α, IFN-γ) secretion by RAW264.7 macrophages and T cells in T1DM mice. This approach protected pancreatic islet cells against immune cell infiltration mediated by inflammatory factors and prevented insulitis. Overall, the encapsulated scaffold developed in this study shows promise as a natural platform for clinical treatment of T1DM.

11.
J Magn Reson Imaging ; 2024 Sep 11.
Article in English | MEDLINE | ID: mdl-39257290

ABSTRACT

BACKGROUND: The pancreas plays a central role in type 2 diabetes mellitus (T2DM), and its blood flow is usually associated with insulin release demand. PURPOSE: To noninvasively assess pancreatic blood flow (PBF) changes and modulation in people with different glucose tolerance following a glucose challenge using ASL MRI. STUDY TYPE: Prospective. SUBJECTS: Fourteen prediabetes, 22 T2DM, and 40 normal. FIELD STRENGTH/SEQUENCE: Pseudo-continuous ASL with a turbo gradient spin echo sequence at 3.0 T. ASSESSMENT: All normal and subjects (diagnosed by oral glucose tolerance test) underwent ASL after fasting for at least 6 hours. The normal and prediabetes groups additionally had ASL scans at 5, 10, 15, 20, and 25 minutes following oral glucose (50 mL, 5%). PBF maps were generated from the ASL data and measured at body and tail. The ability of baseline PBF (BL-PBF) of body, tail (BL-PBFtail), and their average to determine abnormal glucose tolerance and stage was assessed. STATISTICAL TESTS: ANOVA, Mann-Whitney U test, Kruskal-Wallis H test, paired sample t-test, intra-class correlation coefficient, repeated measures ANOVA, correlation analysis, receiver operating characteristic analysis, and logistic regression analysis. A P value <0.05 was considered significant. RESULTS: There were significant differences in BL-PBF among the three groups. The prediabetes group exhibited significantly lower PBF than the normal group at all time points; Both groups showed similar changing trends in PBF (peaking at the 15th minute and subsequently declining). The BL-PBFtail had the highest diagnostic performance when evaluating abnormal glucose tolerance or stage (area under the curves = 0.800, 0.584, respectively) and was an independent risk factor for glucose tolerance status. DATA CONCLUSION: ASL can noninvasively assess changes in PBF among individuals with varying glucose tolerance and in response to glucose challenge, which could be linked to insulin release demand and might help characterize changes in pancreatic endocrine function. EVIDENCE LEVEL: 2 TECHNICAL EFFICACY: Stage 1.

12.
J Surg Oncol ; 2024 Sep 11.
Article in English | MEDLINE | ID: mdl-39257300

ABSTRACT

BACKGROUND: Proton pump inhibitors (PPIs) negatively impact fluoropyrimidine-based chemotherapy efficacy in colorectal cancer. This study assessed PPI impact on major pathologic response (mPR) rates of pancreatic adenocarcinoma (PDAC) patients receiving fluoropyrimidine-based chemotherapy. METHODS: An institutional retrospective review of resected PDAC patients receiving neoadjuvant fluoropyrimidine-based chemotherapy (98% FOLFIRINOX) from 2011 to 2021 was conducted. Outcomes were stratified by use or nonuse of PPIs within 6 months of neoadjuvant chemotherapy initiation. Primary outcome was mPR defined as complete or near complete response. RESULTS: Among 540 patients included, the median age was 64 (IQR: 60-70) years, 297 (55%) were male, and 202 (37%) were PPI users. 170 (31%) patients had mPR with similar rates among PPI users and nonusers (29% vs. 33%, p = 0.38). No difference in mPR was seen between PPI users and nonusers receiving chemoradiation (35% vs. 36%, p = 0.89) or ≥8 cycles of NAC (33% vs. 36%, p = 0.55). Median OS for PPI users was 30.9 versus 31.7 months for nonusers (p = 0.62). On multivariable analysis, PPI therapy was not associated with decreased survival. CONCLUSION: PPI usage did not significantly influence mPR or OS following neoadjuvant fluoropyrimidine-based chemotherapy in resected PDAC patients. Further analysis of all patients, not just those who underwent resection, is required.

13.
Eur J Radiol ; 181: 111715, 2024 Sep 02.
Article in English | MEDLINE | ID: mdl-39241306

ABSTRACT

OBJECTIVES: To assess the prognostic significance of extra-pancreatic organ invasion in patients with resectable pancreatic ductal adenocarcinoma (PDAC) in the pancreas tail. MATERIALS & METHODS: This retrospective study included patients with resectable PDAC in the pancreas tail who received upfront surgery between 2014 and 2020 at a tertiary institution. Preoperative pancreas protocol computed tomography (CT) scans evaluated tumor size, peripancreatic tumor infiltration, suspicious metastatic lymph nodes, and extra-pancreatic organ invasion. The influence of extra-pancreatic organ invasion, detected by CT or postoperative pathology, on pathologic resection margin status was evaluated using logistic regression. The impact on recurrence-free survival (RFS) was analyzed using multivariable Cox proportional hazard models (clinical-CT and clinical-pathologic). RESULTS: The study included 158 patients (mean age, 65 years ± 8.8 standard deviation; 93 men). Extra-pancreatic organ invasion identified by either CT (p = 0.92) or pathology (p = 0.99) was not associated with a positive resection margin. Neither CT (p = 0.42) nor pathological (p = 0.64) extra-pancreatic organ invasion independently correlated with RFS. Independent predictors for RFS included suspicious metastatic lymph node (hazard ratio [HR], 2.05; 95 % confidence interval [CI], 1.08-3.9; p = 0.03) on CT in the clinical-CT model, pathological T stage (HR, 2.97; 95 % confidence interval [CI], 1.39-6.35; p = 0.005 for T2 and HR, 3.78; 95 % CI, 1.64-8.76; p = 0.002 for T3) and adjuvant therapy (HR, 0.62; 95 % confidence interval [CI], 0.42-0.92; p = 0.02) in the clinical-pathologic model. CONCLUSION: Extra-pancreatic organ invasion does not independently influence pathologic resection margin status and RFS in patients with resectable PDAC in the pancreas tail after curative-intent resection; therefore, it should not be considered a high-risk factor.

14.
World J Clin Cases ; 12(25): 5657-5661, 2024 Sep 06.
Article in English | MEDLINE | ID: mdl-39247733

ABSTRACT

This editorial comments on the study by Liu et al investigating pancreatic metastasis of clear cell sarcoma (CCS) published in the World Journal of Clinical Cases. CCS is a rare and aggressive melanocytic tumor, that typically arises from tendons and aponeuroses of the limbs, and metastasizes to the lungs, bones, and brain. However, pancreatic metastasis has rarely been reported, presenting unique diagnostic and therapeutic challenges. Elucidating the clinical characteristics, imaging features, prognostic factors, and treatment outcomes of patients with pancreatic CCS metastasis is crucial. Surgery remains an effective management strategy for CCS. However, the high recurrence rate and low effectiveness of traditional adjuvant treatments necessitate a shift towards more personalized and targeted treatment plans. Research is needed to investigate and validate novel therapeutic approaches specifically tailored to the distinct genetic and molecular characteristics of rare malignancies like CCS. Additionally, the development of late metastases after a long disease-free interval is common in CCS patients. Therefore, routine postoperative surveillance for metastasis using computed tomography, magnetic resonance imaging, bone scans, and positron emission tomography scans is crucial. Moving forward, enhanced collaboration, investigation, and creative thinking among scientists, medical professionals, and legislators are essential to gain a deeper understanding of these rare presentations.

15.
Phys Imaging Radiat Oncol ; 31: 100611, 2024 Jul.
Article in English | MEDLINE | ID: mdl-39253730

ABSTRACT

Background and Purpose: Improved hounsfield-unit accuracy of on-board imaging may lead to direct-to-unit treatment approaches We aimed to demonstrate the feasibility of using only a diagnostic (dx) computed tomography (CT)-defined target pre-plan in an in silico study of simulation-free abdominal stereotactic adaptive radiotherapy (ART). Materials and Methods: Eight patients with abdominal treatment sites (five pancreatic cancer, three oligometastases) were treated using an integrated adaptive O-Ring gantry system. Each patient's target was delineated on a dxCT. The target only pre-plan served primarily to seed the ART process. During the ART session, all structures were delineated. All simulated cases were treated to 50 Gy in 5 fractions to a planning target optimization structure (PTV_OPT) to allow for dose escalation within the planning target volume. Timing of steps during this workflow was recorded. Plan quality was compared between ART treatment plans and a plan created on a CT simulation scan using the traditional planning workflow. Results: The workflow was feasible in all attempts, with organ-at-risk (OAR) constraints met in all fractions despite lack of initial OAR contours. Median absolute difference between the adapted plan and simulation CT plan for the PTV_Opt V95% was 2.0 %. Median absolute difference in the D0.5 cm3 between the adapted plan and simulation CT plan was -0.9 Gy for stomach, 1.2 Gy for duodenum, -5.3 Gy for small bowel, and 0.3 Gy for large bowel. Median end-to-end workflow time was 63 min. Conclusion: The workflow was feasible for a dxCT-defined target-only pre-plan approach to stereotactic abdominal ART.

17.
Cureus ; 16(8): e66378, 2024 Aug.
Article in English | MEDLINE | ID: mdl-39246884

ABSTRACT

Background and aim Pancreatic endotherapy has been established as a viable and effective modality for the management of pain in chronic pancreatitis (CP). However, its impact on endocrine insufficiency has been rarely reported. In this retrospective study, we aimed to assess the impact of endotherapy on glycemic status and the management of diabetes in these patients. Methods A retrospective review of a prospectively maintained database of patients with CP with pain presenting to the King Edward Memorial Hospital and Seth Gordhandas Sunderdas Medical College, Mumbai, India, from December 2021 to May 2023 was done. Detailed clinical, laboratory, imaging, and treatment data were recorded. Endocrine dysfunction was defined as glycosylated hemoglobin (Hba1C) ≥6.5 g/dl. The status of endocrine function (Hba1C values) before and after endotherapy, as well as the requirement of oral hypoglycemic agent (OHA) and/or insulin, was recorded. Results One hundred forty-one patients underwent endoscopic retrograde cholangiopancreatography for the management of pain (mean age: 35 years, 74.5% males). Prior to endotherapy, pathological endocrine dysfunction was seen in 60 patients (42.5%). The mean HbA1c value was 8.46 g/dl (4.5-16.1g/dl). OHAs alone were used in 13/60 (21.6%), and 34/60 (56.6%) required insulin. A combination of OHA and insulin was required in 13/60 (21.6%) of patients. Post-endotherapy, none of the patients were on a combination of OHAs and insulin; 5/13 (38.4%) patients were on OHAs alone, while 8/13 (61.5%) patients were shifted to insulin. Out of the total 47 patients who required insulin, insulin could be stopped in 15/47 (31.9%) of patients. Patients who demonstrated improvement in endocrine dysfunction had significantly lower HbA1c values (6.38 vs. 8.07 g/dl, p < 0.001), a higher proportion of patients with idiopathic pancreatitis (73.3% vs. 22.2%, p = 0.004), and a lower proportion of patients with concomitant exocrine insufficiency (13.3% vs. 53.3%, p = 0.007). Conclusions One-third of the patients had improvements in endocrine dysfunction. Early ductal intervention in a selected subset of patients with CP may have the potential to improve glycemic status.

18.
BMC Med Inform Decis Mak ; 24(1): 248, 2024 Sep 05.
Article in English | MEDLINE | ID: mdl-39237927

ABSTRACT

PROBLEM: Pancreatic ductal adenocarcinoma (PDAC) is considered a highly lethal cancer due to its advanced stage diagnosis. The five-year survival rate after diagnosis is less than 10%. However, if diagnosed early, the five-year survival rate can reach up to 70%. Early diagnosis of PDAC can aid treatment and improve survival rates by taking necessary precautions. The challenge is to develop a reliable, data privacy-aware machine learning approach that can accurately diagnose pancreatic cancer with biomarkers. AIM: The study aims to diagnose a patient's pancreatic cancer while ensuring the confidentiality of patient records. In addition, the study aims to guide researchers and clinicians in developing innovative methods for diagnosing pancreatic cancer. METHODS: Machine learning, a branch of artificial intelligence, can identify patterns by analyzing large datasets. The study pre-processed a dataset containing urine biomarkers with operations such as filling in missing values, cleaning outliers, and feature selection. The data was encrypted using the Fernet encryption algorithm to ensure confidentiality. Ten separate machine learning models were applied to predict individuals with PDAC. Performance metrics such as F1 score, recall, precision, and accuracy were used in the modeling process. RESULTS: Among the 590 clinical records analyzed, 199 (33.7%) belonged to patients with pancreatic cancer, 208 (35.3%) to patients with non-cancerous pancreatic disorders (such as benign hepatobiliary disease), and 183 (31%) to healthy individuals. The LGBM algorithm showed the highest efficiency by achieving an accuracy of 98.8%. The accuracy of the other algorithms ranged from 98 to 86%. In order to understand which features are more critical and which data the model is based on, the analysis found that the features "plasma_CA19_9", REG1A, TFF1, and LYVE1 have high importance levels. The LIME analysis also analyzed which features of the model are important in the decision-making process. CONCLUSIONS: This research outlines a data privacy-aware machine learning tool for predicting PDAC. The results show that a promising approach can be presented for clinical application. Future research should expand the dataset and focus on validation by applying it to various populations.


Subject(s)
Carcinoma, Pancreatic Ductal , Machine Learning , Pancreatic Neoplasms , Humans , Pancreatic Neoplasms/diagnosis , Carcinoma, Pancreatic Ductal/diagnosis , Confidentiality , Biomarkers, Tumor/urine , Male , Female , Middle Aged , Aged
19.
J Xray Sci Technol ; 2024 Sep 03.
Article in English | MEDLINE | ID: mdl-39240616

ABSTRACT

BACKGROUND: Besides the direct impact on the cardiovascular system, hypertension is closely associated with organ damage in the kidneys, liver, and pancreas. Chronic liver and pancreatic damage in hypertensive patients may be detectable via imaging. OBJECTIVE: To explore the correlation between hypertension-related indicators and extracellular volume fraction (ECV) of liver and pancreas measured by iodine maps, and to evaluate corresponding clinical value in chronic damage of liver and pancreas in hypertensive patients. METHODS: A prospective study from June to September 2023 included abdominal patients who underwent contrast-enhanced spectral CT. Normal and various grades of hypertensive blood pressure groups were compared. Upper abdominal iodine maps were constructed, and liver and pancreatic ECVs calculated. Kruskal-Wallis and Spearman analyses evaluated ECV differences and correlations with hypertension indicators. RESULTS: In 300 patients, hypertensive groups showed significantly higher liver and pancreatic ECV than the normotensive group, with ECV rising alongside hypertension severity. ECVliver displayed a stronger correlation with hypertension stages compared to ECVpancreas. Regression analysis identified hypertension severity as an independent predictor for increased ECV. CONCLUSIONS: ECVliver and ECVpancreas positively correlates with hypertension indicators and serves as a potential clinical marker for chronic organ damage due to hypertension, with ECVliver being more strongly associated than ECVpancreas.

20.
Toxicol Mech Methods ; : 1-16, 2024 Sep 08.
Article in English | MEDLINE | ID: mdl-39245987

ABSTRACT

The study aimed to assess the toxic effect of cadmium (Cd) on the exocrine and endocrine functions of pancreas, the changes in pancreatic tissue after Cd withdrawal, and the protective effects of vitamin C (VC) and Nigella sativa (NS) against Cd-induced damage. Rats were assigned to: control, Cd-treated (0.5 mg/kg/d intraperitoneal [IP] injection), VC and Cd-treated (receiving 100 mg/kg/d VC orally and Cd concomitantly), NS and Cd-treated (receiving 20 mg/kg/d NS and Cd, simultaneously), and Cd withdrawal (receiving Cd for 30 d then living free for recovery for other 30 d). Blood samples were collected and post-sacrifice pancreatic specimens were processed for light and electron microscope study. Quantitative analyses of pancreatic collagen area%, pancreatic islet parameters, ß cell density, and insulin immunoexpression were done. Fasting blood glucose was significantly increased in Cd-treated and Cd-withdrawal groups, while co-treatment with VC and NS caused significant reductions (p < 0.05). Cd-induced extensive degenerative changes in pancreatic acini and islets at light and ultrastructure levels. Obvious fibrosis and congestion of blood vessels were noticed. Significant reductions in pancreatic islet number, volume, and surface area and diminished beta cell count and insulin immunoexpression were observed. After withdrawal of Cd, the whole pancreatic tissue still showed a serious impact. Concomitant treatment with VC or NS obviously reduced these degenerative changes and significantly improved pancreatic islet parameters and insulin immunoexpression. VC showed a better amendment than NS, but this difference was statistically insignificant. Therefore, VC and NS could be used as prophylactic agents that lessen Cd consequences on the pancreas.

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