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World Journal of Gastroenterology Jun 2024Coronavirus disease 2019 (COVID-19), caused by the highly pathogenic severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), primarily impacts the respiratory... (Review)
Review
Coronavirus disease 2019 (COVID-19), caused by the highly pathogenic severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), primarily impacts the respiratory tract and can lead to severe outcomes such as acute respiratory distress syndrome, multiple organ failure, and death. Despite extensive studies on the pathogenicity of SARS-CoV-2, its impact on the hepatobiliary system remains unclear. While liver injury is commonly indicated by reduced albumin and elevated bilirubin and transaminase levels, the exact source of this damage is not fully understood. Proposed mechanisms for injury include direct cytotoxicity, collateral damage from inflammation, drug-induced liver injury, and ischemia/hypoxia. However, evidence often relies on blood tests with liver enzyme abnormalities. In this comprehensive review, we focused solely on the different histopathological manifestations of liver injury in COVID-19 patients, drawing from liver biopsies, complete autopsies, and liver analyses. We present evidence of the direct impact of SARS-CoV-2 on the liver, substantiated by observations of viral entry mechanisms and the actual presence of viral particles in liver samples resulting in a variety of cellular changes, including mitochondrial swelling, endoplasmic reticulum dilatation, and hepatocyte apoptosis. Additionally, we describe the diverse liver pathology observed during COVID-19 infection, encompassing necrosis, steatosis, cholestasis, and lobular inflammation. We also discuss the emergence of long-term complications, notably COVID-19-related secondary sclerosing cholangitis. Recognizing the histopathological liver changes occurring during COVID-19 infection is pivotal for improving patient recovery and guiding decision-making.
Topics: Humans; COVID-19; Liver; SARS-CoV-2; Liver Diseases; Hepatocytes
PubMed: 38947288
DOI: 10.3748/wjg.v30.i22.2866 -
Surgery Open Science Aug 2024A grading system was developed for computerized tomography (CT) scans evaluating patients with suspected small bowel obstruction (SBO). We hypothesized that patients...
BACKGROUND
A grading system was developed for computerized tomography (CT) scans evaluating patients with suspected small bowel obstruction (SBO). We hypothesized that patients with a higher grade of suspected SBO on CT scan would be more likely to require surgical intervention.
METHODS
Retrospective chart review of patients who presented to the Emergency Room (ER) who had a CT of the abdomen and pelvis for suspected SBO. Patients were divided into 5 groups: Grade 1 (SBO unlikely), Grade 2 (probable partial or early SBO), Grade 3 (probable high grade SBO), Grade 4 (SBO with changes concerning for ischemia) and Not Graded.
RESULTS
The CT scans of 655 patients were graded. Of the 22 patients with a grade 1 SBO, only 1 went for surgery (4.5 %). For grade 2 patients, 23 out of 299 had an operation (7.7 %), for grade 3 it was 84 out of 299 (28.1 %) and for grade 4 SBO, 25 out of 35 patients (71.4 %) had surgery. The value is <0.00001. The three most common intraoperative findings were SBO obstruction from adhesions alone (48 % of cases), followed by incarcerated hernias (12 %) and ischemic bowel (9 %). Only 8 cases out of 133 operations (6 % of total) had no findings at time of surgery other than dilated bowel.
CONCLUSIONS
The CT grading scale for SBO developed at our institution shows excellent correlation between grade and going for surgery, with few negative results, and can be a useful tool among other factors for general surgeons when deciding whether or not to operate on a patient with suspected SBO.
PubMed: 38946861
DOI: 10.1016/j.sopen.2024.05.016 -
World Journal of Gastrointestinal... Jun 2024Incomplete congenital duodenal obstruction (ICDO) is caused by a congenitally perforated duodenal web (CPDW). Currently, only six cases of balloon dilatation of the PDW...
BACKGROUND
Incomplete congenital duodenal obstruction (ICDO) is caused by a congenitally perforated duodenal web (CPDW). Currently, only six cases of balloon dilatation of the PDW in newborns have been described.
AIM
To present our experience of balloon dilatation of a perforated duodenal membrane in newborns with ICDO.
METHODS
Five newborns who underwent balloon dilatation of the CPDW along a preinstalled guidewire between 2021 and 2023 were included. Nineteen newborns diagnosed with ICDO who underwent laparotomy were included in the control group.
RESULTS
In all cases, good anatomical and clinical results were obtained. In three cases, a follow-up study was conducted after 1 year. The average time to start enteral feeding per os was significantly earlier in the study group (4.4 d) than in the laparotomic group (21.2 days; < 0.0001). The time spent by patients in the intensive care unit and hospital after balloon dilatation was also significantly shorter. We determined the selection criteria for possible and effective CPDW balloon dilatation in newborns as follows: (1) Presence of dynamic radiographic signs of the passage of a radiopaque substance beyond the zone of narrowing or radiographic signs of pneumatisation of the duodenum and small bowel distal to the web; (2) presence of endoscopic signs of CPDW; (3) successful cannulation with a guidewire performed parallel to the endoscope, with holes in the congenital duodenal web; and (4) successful positioning of the balloon performed along a freestanding guidewire on the web.
CONCLUSION
Strictly following selection criteria for newborns with ICDO caused by CPDW ensures that endoscopic balloon dilatation using a pre-installed guidewire is safe and effective and shows good 1-year follow-up results.
PubMed: 38946850
DOI: 10.4253/wjge.v16.i6.343 -
Case Reports in Women's Health Jun 2024Pain after vaginal prolapse repair surgery with mesh is generally attributed to the mesh fixation, particularly to mesh erosion, dislocation or the development of...
Pain after vaginal prolapse repair surgery with mesh is generally attributed to the mesh fixation, particularly to mesh erosion, dislocation or the development of hematoma. However, once all the causes have been excluded, the urinary system, bladder and ureters should be accurately examined by means of endovaginal ultrasound. This report concerns the case of a 72-year-old woman who had undergone mesh-supported prolapse surgery 3 months prior, with no other relevant diseases, who visited the emergency department complaining of dull, right-sided colic pain. The endovaginal ultrasound examination revealed a prevesical ureteral calculus on the right side with consequent dilatation of the proximal ureter. Computed tomography of the abdomen and pelvis confirmed the calculus in the distal right ureter and revealed a right renal lower pole calculus. The patient underwent treatment via an operative ureterorenoscopy with removal of stones and placement of a double-J-stent. Two months later, a second ureterorenoscopy was performed with double-J-stent removal and concomitant stone extraction. It appears that no similar cases have been reported in the literature. This is why, during the urogynecological postoperative follow-up, it is of paramount importance to examine the entire urogenital system with endovaginal ultrasound. This case report highlights how, through a simple, non-invasive, radiation-free examination, like ultrasound, most of the post-operative complications of vaginal prolapse repair surgery using mesh, including urolithiasis, can be excluded.
PubMed: 38946844
DOI: 10.1016/j.crwh.2024.e00627 -
International Journal of Cardiology.... Aug 2024Dilated cardiomyopathy (DCM) is distinguished by left ventricle (LV) dilation accompanied by systolic dysfunction. However, some studies suggested also a high prevalence...
BACKGROUND
Dilated cardiomyopathy (DCM) is distinguished by left ventricle (LV) dilation accompanied by systolic dysfunction. However, some studies suggested also a high prevalence of LV diastolic dysfunction (LVDD), similar to a general cohort of heart failure (HF) with reduced ejection fraction (LVEF). The bulk of evidence, mostly arising from basic studies, suggests a causative link between cardiac fibrosis (CF) and LVDD. However, still, there remains a scarcity of data on LVDD and CF. Therefore, the aim of the study was to investigate the association between CF and LVDD in DCM patients.
METHODS
The study population was composed of 102 DCM patients. Replacement CF was evaluated qualitatively (late gadolinium enhancement - LGE) and quantitively (LGE extent); interstitial cardiac fibrosis was assessed via extracellular volume (ECV). Based on echocardiography patients were divided into normal and elevated left atrial pressure (nLAP, eLAP) groups.
RESULTS
42 % of patients had eLAP. They displayed higher troponin and NT-proBNP. Both groups did not differ in terms of LGE presence and extent; however, eLAP patients had larger ECV: 30.1 ± 5.6 % vs. 27.8 ± 3.9 %, p = 0.03. Moreover, ECV itself was found to be an independent predictor of LVDD (OR = 0.901; 95 %CI 0.810-0.999; p = 0.047; normalised for LVEF and RVOT diameter).
CONCLUSIONS
More than two-in-five DCM patients had at least moderate LVDD. The mere presence or extent of replacement cardiac fibrosis is similar in patients with nLAP and eLAP. On the other hand, interstitial cardiac fibrosis is more pronounced in those with a higher grade of LVDD. ECV was found to be an independent predictor of LVDD in DCM.
PubMed: 38946711
DOI: 10.1016/j.ijcha.2024.101426 -
ESC Heart Failure Jul 2024
PubMed: 38946583
DOI: 10.1002/ehf2.14924 -
Facial Plastic Surgery & Aesthetic... Jul 2024The demand for less invasive nasal procedures has been increasing, highlighting a gap in research on alternatives beyond fillers. This review explores the potential of...
The demand for less invasive nasal procedures has been increasing, highlighting a gap in research on alternatives beyond fillers. This review explores the potential of neuromodulators and energy-based devices for nonsurgical rhinoplasty. Both botulinum toxin and energy-based devices used independently or alongside fillers have been studied for nasal shape adjustments. Neuromodulator injection of the depressor septi nasi can reduce nasal tip droop, which can reduce the appearance of a plunged nose. Treatment of the dilator naris can minimize alar flaring, giving the appearance of a thinner nasal tip. These methods primarily reported patient-reported outcomes. Energy-based devices have been used to address nasal skin quality and shape contouring, including resurfacing devices for rhinophyma with improvement in both physician and patient-reported outcomes. The 1470 nm laser achieved nasal reshaping after two sessions. Radiofrequency microneedling was notable for volumetric reduction in the nose (excluding nasal tip), confirmed by 3D imaging, lasting about 12 months. The use of neuromodulators and energy-based devices may offer promising results for nasal reshaping. However, there is a need for further comparison studies using both objective measures such as 3D photography and physician and patient-reported outcomes, prior to establishing best practices for these techniques.
PubMed: 38946551
DOI: 10.1089/fpsam.2023.0316 -
Ultrastructural Pathology Jul 2024Sepsis denotes a serious high mortality concern. The study was designed to evaluate the effect of mesenchymal stem cell exosomes (MSC-exosomes) on the evolution of the...
The potential therapeutic effects of exosomes derived from bone marrow mesenchymal stem cells on ileum injury of a rat sepsis model (histological and immunohistochemical study).
Sepsis denotes a serious high mortality concern. The study was designed to evaluate the effect of mesenchymal stem cell exosomes (MSC-exosomes) on the evolution of the animal model of sepsis. In this study, 36 rats were distributed into three groups, (I) controls, (II) LPS-treated, and (III) LPS+MSC-EVs. Sepsis was simulated by administering E. coli-LPS to the laboratory animals. Group III was given MSC-exosomes four hours after the LPS injection. Forty-eight hours later rats were sacrificed. Ileum samples were excised, and processed for the histological assessment, immunohistochemical identification of CD44, and inducible nitric oxide synthase (iNOS). Ileum homogenate was used to estimate tumor necrosis factor α (TNF α) besides Cyclooxygenase-2 (COX 2). PCR was used for the detection of interleukin 1α (IL‑1α), and interleukin 17 (IL‑17). Statistical and morphometrical analysis was done. The LPS-treated group showed increased TNF-α, IL‑1α, IL‑17, and decreased COX 2. LPS administration led to cytoplasmic vacuolization of enterocytes, an increase in the vasculature, and cellular infiltrations invaded the lamina propria. There was a significant rise in goblet cells and the proportion of collagen fibers. Ultrastructurally, the enterocytes displayed nuclear irregularity, rough endoplasmic reticulum (rER) dilatation, and increased mitochondria number. Sepsis induces a significant increase in iNOS and a decrease in CD44 immune expressions. LPS+MSC-EVs group restored normal ileum structure and revealed a significant elevation in CD44 and a reduction in iNOS immunoreactions. LPS-sepsis induced an obvious ileum inflammatory deterioration ameliorated by MSC-exosomes, mostly through their antioxidant, anti-inflammatory, and anti-apoptotic properties.
Topics: Animals; Sepsis; Rats; Ileum; Mesenchymal Stem Cells; Disease Models, Animal; Exosomes; Male; Immunohistochemistry; Rats, Wistar; Nitric Oxide Synthase Type II
PubMed: 38946300
DOI: 10.1080/01913123.2024.2368011 -
Clinics in Liver Disease Aug 2024Portopulmonary hypertension (POPH), hepatopulmonary syndrome, and hepatic hydrothorax constitute significant complications of portal hypertension, with important... (Review)
Review
Portopulmonary hypertension (POPH), hepatopulmonary syndrome, and hepatic hydrothorax constitute significant complications of portal hypertension, with important implications for management and liver transplantation (LT) candidacy. POPH is characterized by obstruction and remodeling of the pulmonary resistance arterial bed. Hepatopulmonary syndrome is the most common pulmonary vascular disorder, characterized by intrapulmonary vascular dilatations causing impaired gas exchange. LT may improve prognosis in select patients with POPH. LT is the only effective treatment of hepatopulmonary syndrome. Hepatic hydrothorax is defined as transudative pleural fluid accumulation that is not explained by primary cardiopulmonary or pleural disease. LT is the definitive cure for hepatic hydrothorax.
Topics: Humans; Hypertension, Portal; Hepatopulmonary Syndrome; Hydrothorax; Hypertension, Pulmonary; Liver Transplantation
PubMed: 38945638
DOI: 10.1016/j.cld.2024.03.005 -
Heart Rhythm Jun 2024Many genetic non-ischemic dilated cardiomyopathies (NICM) cause ventricular tachycardias (VT) originating from scar substrate identified as areas of low electrogram...
BACKGROUND
Many genetic non-ischemic dilated cardiomyopathies (NICM) cause ventricular tachycardias (VT) originating from scar substrate identified as areas of low electrogram voltage. Substrate locations vary and the causes of scar are not well defined.
OBJECTIVE
This study evaluated VT substrate locations in genetic NICM patients undergoing VT ablation to evaluate spatial relationships between specific variants and substrate locations.
METHODS
In this retrospective case series analysis, 32 patients (age 55 +/- 16 years, 94% male, left ventricular ejection fraction 34 +/- 13%) with genetic NICM referred for VT ablation between October 2018 and November 2022 at a single medical center were evaluated. Scar locations were defined as areas of low unipolar/ bipolar voltage.
RESULTS
Of the thirty-two patients evaluated, mutations in TTN (n=11 of 32), LMNA (n=6 of 32), PKP2 (n=5 of 32), MYBPC3 (n=3 of 32), DSP (n=2 of 32), TTR (n=1 of 32), FLNC (n=1 of 32), AGL (n=1 of 32), DES (n=1 of 32), DSG2 (n=1 of 32), were observed. Substrates associated with mutations in TTN were only observed in basal subregions, predominantly anterior (100%), and septal (50%) regions. LMNA mutations were associated with fibrosis in mid inferolateral (60%) and apical inferolateral (60%) regions. Substrate location for individuals with PKP2 mutations were solely observed in the right ventricle, predominantly basal inferolateral regions.
CONCLUSION
Understanding spatial relationships between genetic variants causing NICM and VT substrate locations can help lead to generalizable regions in patients with genetically related NICM presenting in VT which can be investigated during ablation procedures.
PubMed: 38945504
DOI: 10.1016/j.hrthm.2024.06.047