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International Journal of Molecular... Jun 2024Leptin regulates lipid metabolism, maximizing insulin sensitivity; however, peripheral leptin resistance is not fully understood, and its contribution to metabolic...
Leptin regulates lipid metabolism, maximizing insulin sensitivity; however, peripheral leptin resistance is not fully understood, and its contribution to metabolic dysfunction-associated steatotic liver disease (MASLD) is unclear. This study evaluated the contribution of the leptin axis to MASLD in humans. Forty-three participants, mostly female (86.04%), who underwent cholecystectomy were biopsied. Of the participants, 24 were healthy controls, 8 had MASLD, and 11 had metabolic dysfunction-associated steatohepatitis (MASH). Clinical and biochemical data and the gene expression of leptin, leptin receptor (), suppressor of cytokine signaling 3 (), sterol regulatory element-binding transcription factor 1 (), stearoyl-CoA desaturase-1 (), and patatin-like phospholipase domain-containing protein 2 (), were determined from liver and adipose tissue. Higher serum leptin and levels in the omental adipose tissue (OAT) and liver with MASH were found. In the liver, was positively correlated with leptin expression in adipose tissue, and was correlated with . In OAT, was correlated with insulin resistance and transaminase enzymes ( < 0.05 for all. In conclusion, we evidenced the correlation between the peripheral leptin resistance axis in OAT-liver crosstalk and the complications of MASLD in humans.
Topics: Humans; Leptin; Female; Male; Liver; Middle Aged; Omentum; Adipose Tissue; Adult; Fatty Liver; Receptors, Leptin; Suppressor of Cytokine Signaling 3 Protein; Insulin Resistance; Sterol Regulatory Element Binding Protein 1; Stearoyl-CoA Desaturase
PubMed: 38928125
DOI: 10.3390/ijms25126420 -
Cancers Jun 2024The "vein definition" for locally advanced pancreatic ductal adenocarcinoma (LA PDAC) assumes portal-to-superior mesenteric vein (PV/SMV) unreconstructability due to...
The "vein definition" for locally advanced pancreatic ductal adenocarcinoma (LA PDAC) assumes portal-to-superior mesenteric vein (PV/SMV) unreconstructability due to tumor involvement or occlusion. Radical pancreatectomies with SMV resection without PV/SMV reconstruction are scarcely discussed in the literature. Retrospective analysis of 19 radical pancreatectomies for "low" LA PDAC with SMV and all its tributaries resection without PV/SMV reconstruction has shown zero mortality; overall morbidity-56%; Dindo-Clavien-3-10.5%; R0-rate-82%; mean operative procedure time-355 ± 154 min; mean blood loss-330 ± 170 mL; delayed gastric emptying-25%; and clinically relevant postoperative pancreatic fistula-8%. In three cases, surgery was associated with superior mesenteric (n2) and common hepatic artery (n1) resection. Surgery was completed without vein reconstruction (n13) and with inferior mesenteric-to-splenic anastomosis (n6). There were no cases of liver, gastric, or intestinal ischemia. A specific complication of the SMV resection without reconstruction was 2-3 days-long intestinal edema (48%). Median overall survival was 25 months, and median progression-free survival was 18 months. All the relapses, except two, were distant. The possibility of successful SMV resection without PV/SMV reconstruction can be predicted before surgery by CT-based reconstructions. The mandatory anatomical conditions for the procedure were as follows: (1) preserved SMV-SV confluence; (2) occluded SMV for any reason (tumor or thrombus); (3) well-developed inferior mesenteric vein collaterals with dilated intestinal veins; (4) no right-sided vein collaterals; and (5) no varices in the upper abdomen. Conclusion: "Low" LA PDACs involving SMV with all its tributaries can be radically and safely resected in highly and specifically selected cases without PV/SMV reconstruction with an acceptable survival rate.
PubMed: 38927939
DOI: 10.3390/cancers16122234 -
Bioengineering (Basel, Switzerland) May 2024The umbilical or L3 vertebral body level is often used for body fat quantification using computed tomography. To explore the feasibility of using clinically acquired...
The umbilical or L3 vertebral body level is often used for body fat quantification using computed tomography. To explore the feasibility of using clinically acquired pelvic magnetic resonance imaging (MRI) for visceral fat measurement, we examined the correlation of visceral fat parameters at the umbilical and L5 vertebral body levels. We retrospectively analyzed T2-weighted half-Fourier acquisition single-shot turbo spin echo (HASTE) MR axial images from Crohn's disease patients who underwent MRI enterography of the abdomen and pelvis over a three-year period. We determined the area/volume of subcutaneous and visceral fat from the umbilical and L5 levels and calculated the visceral fat ratio (VFR = visceral fat/subcutaneous fat) and visceral fat index (VFI = visceral fat/total fat). Statistical analyses involved correlation analysis between both levels, inter-rater analysis between two investigators, and inter-platform analysis between two image-analysis platforms. Correlational analysis of 32 patients yielded significant associations for VFI (r = 0.85; < 0.0001) and VFR (r = 0.74; < 0.0001). Intraclass coefficients for VFI and VFR were 0.846 and 0.875 (good agreement) between investigators and 0.831 and 0.728 (good and moderate agreement) between platforms. Our study suggests that the L5 level on clinically acquired pelvic MRIs may serve as a reference point for visceral fat quantification.
PubMed: 38927764
DOI: 10.3390/bioengineering11060528 -
Biology May 2024The swimming performance of cultured finfish species is typically studied under steady flow conditions. However, flow conditions are mostly unsteady, for instance, as...
The swimming performance of cultured finfish species is typically studied under steady flow conditions. However, flow conditions are mostly unsteady, for instance, as experienced in sea pens in exposed sea areas. Using a Loligo swim tunnel, we investigated the effects of swimming in steady and unsteady flows at increasing swimming speeds on post-smolt Atlantic salmon. Oxygen consumption (MO), locomotory behaviour, and overall dynamic body acceleration (ODBA), as determined with implanted acoustic sensor tags, were compared between both flow conditions. Results were obtained for mean swimming speeds of 0.2 to 0.8 m.s under both flow conditions. Sensor tags that were implanted in the abdominal cavity had no significant effects on MO and locomotory parameters. The MO of fish swimming in unsteady flows was significantly higher (15-53%) than when swimming in steady flows ( < 0.05). Significant interaction effects of ODBA with flow conditions and swimming speed were found. ODBA was strongly and positively correlated with swimming speed and MO in unsteady flow (R = 0.94 and R = 0.93, respectively) and in steady flow (R = 0.91 and R = 0.82, respectively). ODBA predicts MO well over the investigated range of swimming speeds in both flow conditions. In an unsteady flow condition, ODBA increased twice as fast with MO compared with steady flow conditions ( < 0.05). From these results, we can conclude that (1) swimming in unsteady flow is energetically more costly for post-smolt Atlantic salmon than swimming in steady flow, as indicated by higher MO, and (2) ODBA can be used to estimate the oxygen consumption of post-smolt Atlantic salmon in unsteady flow in swim tunnels.
PubMed: 38927273
DOI: 10.3390/biology13060393 -
BMC Medical Imaging Jun 2024To assess the improvement of image quality and diagnostic acceptance of thinner slice iodine maps enabled by deep learning image reconstruction (DLIR) in abdominal...
Deep learning image reconstruction generates thinner slice iodine maps with improved image quality to increase diagnostic acceptance and lesion conspicuity: a prospective study on abdominal dual-energy CT.
BACKGROUND
To assess the improvement of image quality and diagnostic acceptance of thinner slice iodine maps enabled by deep learning image reconstruction (DLIR) in abdominal dual-energy CT (DECT).
METHODS
This study prospectively included 104 participants with 136 lesions. Four series of iodine maps were generated based on portal-venous scans of contrast-enhanced abdominal DECT: 5-mm and 1.25-mm using adaptive statistical iterative reconstruction-V (Asir-V) with 50% blending (AV-50), and 1.25-mm using DLIR with medium (DLIR-M), and high strength (DLIR-H). The iodine concentrations (IC) and their standard deviations of nine anatomical sites were measured, and the corresponding coefficient of variations (CV) were calculated. Noise-power-spectrum (NPS) and edge-rise-slope (ERS) were measured. Five radiologists rated image quality in terms of image noise, contrast, sharpness, texture, and small structure visibility, and evaluated overall diagnostic acceptability of images and lesion conspicuity.
RESULTS
The four reconstructions maintained the IC values unchanged in nine anatomical sites (all p > 0.999). Compared to 1.25-mm AV-50, 1.25-mm DLIR-M and DLIR-H significantly reduced CV values (all p < 0.001) and presented lower noise and noise peak (both p < 0.001). Compared to 5-mm AV-50, 1.25-mm images had higher ERS (all p < 0.001). The difference of the peak and average spatial frequency among the four reconstructions was relatively small but statistically significant (both p < 0.001). The 1.25-mm DLIR-M images were rated higher than the 5-mm and 1.25-mm AV-50 images for diagnostic acceptability and lesion conspicuity (all P < 0.001).
CONCLUSIONS
DLIR may facilitate the thinner slice thickness iodine maps in abdominal DECT for improvement of image quality, diagnostic acceptability, and lesion conspicuity.
Topics: Humans; Deep Learning; Prospective Studies; Female; Male; Middle Aged; Contrast Media; Aged; Tomography, X-Ray Computed; Radiographic Image Interpretation, Computer-Assisted; Radiography, Abdominal; Radiography, Dual-Energy Scanned Projection; Adult; Iodine; Aged, 80 and over
PubMed: 38926711
DOI: 10.1186/s12880-024-01334-0 -
World Journal of Emergency Surgery :... Jun 2024Monitoring Intraabdominal Pressure (IAP) is essential in critical care, as elevated IAP can lead to severe complications, including Abdominal Compartment Syndrome (ACS)....
BACKGROUND
Monitoring Intraabdominal Pressure (IAP) is essential in critical care, as elevated IAP can lead to severe complications, including Abdominal Compartment Syndrome (ACS). Advances in technology, such as digital capsules, have opened new avenues for measuring IAP non-invasively. This study assesses the feasibility and effectiveness of using a capsular device for IAP measurement in an animal model.
METHOD
In our controlled experiment, we anesthetized pigs and simulated elevated IAP conditions by infusing CO2 into the peritoneal cavity. We compared IAP measurements obtained from three different methods: an intravesical catheter (IAP), a capsular device (IAP), and a direct peritoneal catheter (IAP). The data from these methods were analyzed to evaluate agreement and accuracy.
RESULTS
The capsular sensor (IAP) provided continuous and accurate detection of IAP over 144 h, with a total of 53,065,487 measurement triplets recorded. The correlation coefficient (R²) between IAP and IAP was excellent at 0.9241, demonstrating high agreement. Similarly, IAP and IAP showed strong correlation with an R² of 0.9168.
CONCLUSION
The use of capsular sensors for continuous and accurate assessment of IAP marks a significant advancement in the field of critical care monitoring. The high correlation between measurements from different locations and methods underscores the potential of capsular devices to transform clinical practices by providing reliable, non-invasive IAP monitoring.
Topics: Animals; Swine; Intra-Abdominal Hypertension; Feasibility Studies; Monitoring, Physiologic; Pressure; Abdominal Cavity; Reproducibility of Results; Disease Models, Animal
PubMed: 38926694
DOI: 10.1186/s13017-024-00553-8 -
Veterinary Sciences Jun 2024A one-year-old female miniature goat was presented to an emergency service after calving a dead goatling. Physical and ultrasonographic examination revealed the presence...
A one-year-old female miniature goat was presented to an emergency service after calving a dead goatling. Physical and ultrasonographic examination revealed the presence of a viable fetus; therefore, the goat was submitted to an emergency cesarean section. In the postoperative period, the animal had septic peritonitis caused by and . Both bacterial strains showed contrasting antimicrobial resistance profiles. Laparohysterectomy and abdominal cavity lavage were performed, but, once the animal had adhesions and necrotic lesions in abdominal organs, euthanasia was executed. A post-mortem examination revealed fibrino-necrotic septic peritonitis secondary to uterine rupture. To the authors' knowledge, this is the first detailed report of polymicrobial septic peritonitis in a miniature goat and the first report of septic peritonitis caused by and .
PubMed: 38922015
DOI: 10.3390/vetsci11060268 -
Plastic and Reconstructive Surgery.... Jun 2024Preoperative vascular imaging has become standard practice in the planning of microsurgical breast reconstruction. Currently, translating perforator locations from...
Preoperative vascular imaging has become standard practice in the planning of microsurgical breast reconstruction. Currently, translating perforator locations from radiological findings to a patient's abdomen is often not easy or intuitive. Techniques using three-dimensional printing or patient-specific guides have been introduced to superimpose anatomy onto the abdomen for reference. Augmented and mixed reality is currently actively investigated for perforator mapping by superimposing virtual models directly onto the patient. Most techniques have found only limited adoption due to complexity and price. Additionally, a critical step is aligning virtual models to patients. We propose repurposing suture packaging as an image tracking marker. Tracking markers allow quick and easy alignment of virtual models to the individual patient's anatomy. Current techniques are often complicated or expensive and limit intraoperative use of augmented reality models. Suture packs are sterile, readily available, and can be used to align abdominal models on the patients. Using an iPad, the augmented reality models automatically align in the correct position by using a suture pack as a tracking marker. Given the ubiquity of iPads, the combination of these devices with readily available suture packs will predictably lower the barrier to entry and utilization of this technology. Here, our workflow is presented along with its intraoperative utilization. Additionally, we investigated the accuracy of this technology.
PubMed: 38919516
DOI: 10.1097/GOX.0000000000005933 -
Journal of Anaesthesiology, Clinical... 2024
PubMed: 38919440
DOI: 10.4103/joacp.joacp_393_22 -
Cureus May 2024Splenic cysts are extremely rare entities that typically result from prior abdominal trauma, infections, and degenerative diseases. They are divided into two categories:...
Splenic cysts are extremely rare entities that typically result from prior abdominal trauma, infections, and degenerative diseases. They are divided into two categories: true cysts with epithelial lining, and false pseudocysts without epithelial lining, which is more common than true cysts. We describe here a case of a non-traumatic splenic pseudocyst in a healthy 29-year-old male patient, who presented with left upper quadrant abdominal pain. Physical examination revealed scaphoid abdomen and left hypochondrium fullness. The spleen was uniformly enlarged, smooth, and firm, with mild tenderness. Laboratory testing was normal. An abdominal CT scan showed a huge unilocular non-enhancing cyst occupying the upper part of the spleen, measuring around 16 × 18.5 × 20 cm. The patient was managed with cyst aspiration and partial cystectomy. The histopathological examination findings are consistent with splenic pseudocyst. A one-year follow-up period revealed no complications or recurrence. Spleen cysts are rare in clinical practice, posing challenges in diagnosis and treatment. Surgical options include partial or total splenectomy, cyst aspiration, percutaneous drainage, partial cystectomy, and marsupialization. The choice depends on the cyst's size, splenic coverage, and relation to the hilum. Recently, spleen-preserving approaches have been favored to avoid life-threatening sepsis. Non-traumatic splenic pseudocysts present significant diagnostic dilemmas, requiring histopathological examination for definitive diagnosis. Spleen-preserving management is highly recommended to reduce the risk of life-threatening sepsis.
PubMed: 38919238
DOI: 10.7759/cureus.61110