Masses of the tongue and floor of the mouth: findings on magnetic resonance imaging

The purpose of this study was to determine the value of MR imaging for the demonstration of masses in the tongue and floor of the mouth. Nine patients were prospectively examined with MR imaging after physical examination. Imaging protocol included T2 and contrast-enhanced and non-contrast-enhanced T1-weighted turbo spin-echo sequences, and the findings were compared with surgical and histopathological results. Histopathological examination revealed four squamous cell carcinomas, one adenoid cystic carcinoma, two tongue abscesses, and one chronic inflammatory change. The other case was diagnosed as hemangioma depending on clinical and imaging findings alone. In cases with squamous cell carcinoma, staging was done on the basis of MR imaging findings, and was found to be T4 in two cases, T3 in one case, and T2 in another. The primary role of MR imaging of the tongue and oropharynx is not to make a tissue diagnosis. Multiple deep biopsies are mandatory for the differentiation of other inflammatory and neoplastic lesions. Magnetic resonance imaging produces coronal and sagittal image planes to assess the volume and spread of the lesion and helps the surgeon determine the direction in which the biopsy should be performed. Received: 4 October 1999; Revised: 31 January 2000; Accepted: 6 April 2000     

Discriminating performance of macular ganglion cell-inner plexiform layer thicknesses at different stages of glaucoma

AIM: To determine the discriminating performance of the macular ganglion cell-inner plexiform layer (GC-IPL) parameters between all the consecutive stages of glaucoma (from healthy to moderate-to-severe glaucoma), and to compare it with the discriminating performances of the peripapillary retinal nerve fiber layer (RNFL) parameters and optic nerve head (ONH) parameters. METHODS: Totally 147 eyes (40 healthy, 40 glaucoma suspects, 40 early glaucoma, and 27 moderate-to-severe glaucoma) of 133 subjects were included. Optical coherence tomography (OCT) was obtained using Cirrus HD-OCT 5000. The diagnostic performances of GC-IPL, RNFL, and ONH parameters were evaluated by determining the area under the curve (AUC) of the receiver operating characteristics. RESULTS: All GC-IPL parameters discriminated glaucoma suspect patients from subjects with healthy eyes and moderate-to-severe glaucoma from early glaucoma patients (P<0.017, for all). Also, minimum, inferotemporal and inferonasal GC-IPL parameters discriminated early glaucoma patients from glaucoma suspects, whereas no RNFL or ONH parameter could discriminate between the two. The best parameters to discriminate glaucoma suspects from subjects with healthy eyes were superonasal GC-IPL, superior RNFL and average c/d ratio (AUC=0.746, 0.810 and 0.746, respectively). Discriminating performances of all the parameters for early glaucoma vs glaucoma suspect comparison were lower than that of the other consecutive group comparisons, with the best GC-IPL parameters being minimum and inferotemporal (AUC=0.669 and 0.662, respectively). Moreover, minimum GC-IPL, average RNFL, and rim area (AUC=0.900, 0.858, 0.768, respectively) were the best parameters for discriminating moderate-to-severe glaucoma patients from early glaucoma patients. CONCLUSION: GC-IPL parameters can discriminate glaucoma suspect patients from subjects with healthy eyes, and also all the consecutive stages of glaucoma from each other (from glaucoma suspect to moderate-to-severe glaucoma). Further, the discriminating performance of GC-IPL thicknesses is comparable to that.     

Investigation of the apoptotic effect of curcumin in human leukemia HL-60 cells by using flow cytometry

Curcumin (diferuloylmethane), the major yellow pigment isolated from the turmeric (Curcuma longa), has received much attention due to several biological properties. Curcumin exhibits a variety of pharmacological effects including antitumor, anti-inflammatory, and anti-infectious activities. In the present study, the effects of curcumin on apoptosis in the acute promyelocytic human leukemia (HL-60) cells was evaluated. Cytotoxic effects of curcumin on HL-60 cells were determined by MTT. HL-60 cells underwent apoptosis on treatment with curcumin, as indicated by increased annexin V-binding capacity and caspase-3 activation with flow cytometric analysis. Concentrations of 15, 20, and 40?μM curcumin significantly reduced cell proliferations. When HL-60 cells were treated with 10, 15, 20, and 40?μM concentration of curcumin, apoptotic rates were determined as 1.2, 81.1, 84.5, and 88.6%, respectively. On the incubations with the concentrations of curcumin, caspase-3 expressions (+) were found to be elevated by 8.5, 18.6, 91.2, and 92.4%, respectively. It was shown that curcumin had significant cytotoxic and apoptotic effects on HL-60 cells. It was suggested that curcumin may have a potential therapeutic role for human leukemia.     

Obesity and Dysmetabolic Factors among Deceased COVID-19 Adults under 65 Years of Age in Italy: A Retrospective Case-Control Study

Background: Italy has witnessed high levels of COVID-19 deaths, mainly at the elderly age. We assessed the comorbidity and the biochemical profiles of consecutive patients ≤65 years of age to identify a potential risk profile for death. Methods: We retrospectively analyzed clinical data from consecutive hospitalized-for-COVID-19 patients ≤65 years, who were died (593 patients) or discharged (912 patients) during February–December 2020. Multivariate logistic regression identified the mortality risk factors. Results: Overweight (adjusted odds ratio (adjOR) 5.53, 95% CI 2.07–14.76), obesity (adjOR 8.58, CI 3.30–22.29), dyslipidemia (adjOR 10.02, 95% CI 1.06–94.22), heart disease (adjOR 17.68, 95% CI 3.80–82.18), cancer (adjOR 13.28, 95% CI 4.25–41.51) and male sex (adjOR 5.24, 95% CI 2.30–11.94) were associated with death risk in the youngest population. In the older population (46-65 years of age), the overweight and obesity were also associated with the death risk, however at a lower extent: the adjORs varyied from 1.49 to 2.36 for overweight patients and from 3.00 to 4.07 for obese patients. Diabetes was independently associated with death only in these older patients. Conclusion: Overweight, obesity and dyslipidemia had a pivotal role in increasing young individuals’ death risk. Their presence should be carefully evaluated for prevention and/or prompt management of SARS-CoV2 infection in such high-risk patients to avoid the worst outcomes.     

Changes in methionine metabolism induced by D-galactosamine in isolated rat hepatocytes

We studied several steps of methionine metabolism in isolated rat hepatocytes both with and without the presence of a hepatotoxic agent (D-galactosamine). By use of selective labelling either on methyl or on carboxyl groups, we showed that intracellular methionine is used preferentially for the methylation of phospholipids (42%) and nucleic acids (31%) via S-adenosylmethionine. In the presence of D-galactosamine, the incorporation of L-(14CH3) methionine into macromolecules is significantly inhibited (greater than 50%). This inhibition is associated with a decrease of S-adenosylmethionine and an increase of methionine in the injured cells. These results suggest that hepatotoxicity of galactosamine may be due in part to an inhibition of the methylation of nucleic acids and phospholipids. Consequently, we hypothesize that hypermethioninemia associated with human liver disease could be due, at least partly, to a defect in synthesis and/or utilization of S-adenosylmethionine by hepatocytes.     

Antioxidant,anticholinesterase and tyrosinase inhibition activities,and fatty acids of Crocus mathewii – A forgotten endemic angiosperm of Turkey

Context We report the first ever chemical/biochemical study on Crocus mathewii Kerndorff (Iridaceae) – a Turkish endemic angiosperm. This plant has never been explored for its phytochemistry and bioactivities.

Objective This study explores C. mathewii corm and aerial parts for the chemical and biological properties of hexane, ethyl acetate, methanol and water fractions of the extracts.

Material and methods Plant material (20 g) was extracted by methanol (250?mL?×?5, 3 days each) and fractioned into hexane, ethyl acetate, methanol and water. All fractions were subjected to β-carotene–linoleic acid, DPPH^·, ABTS^·+, CUPRAC, metal chelating and tyrosinase inhibition activities. Hexane fractions were submitted to GC–MS analysis.

Results Ethyl acetate fractions showed excellent IC₅₀ values in DPPH^· (aerial 36.21?±?0.76 and corm 33.87?±?0.02?mg/L) and ABTS^·+ (aerial 33.01?±?0.79 and bulb 27.87?±?0.33?mg/L); higher than the IC₅₀ of the standard α-tocopherol (DPPH 116.25?±?1.97; ABTS 52.64?±?0.37?mg/L), higher than BHA in DPPH (57.31?±?0.25?mg/L), but slightly lower in ABTS (19.86?±?2.73?mg/L). Methanol extract of aerial parts also showed higher activity than α-tocopherol in DPPH (85.56?±?11.51?mg/L) but slightly less (72.90?±?3.66?mg/L) than both the standards in ABTS. Linoleic (aerial 53.9%, corm 43.9%) and palmitic (aerial 22.2%, corm 18%) were found as the major fatty acids.

Discussion and conclusion Some fractions of C. mathewii showed higher antioxidant activities than the standards. There is a need to explore more about this plant.     

Factors Affecting Morbidity and Mortality in Patients Who Underwent Emergency Operation for Incarcerated Abdominal Wall Hernia

Patients with incarcerated abdominal wall hernias (AWHs) are often encountered in emergency care units. Despite advances in anesthesia, antisepsis, antibiotic therapy, and fluid therapy, the morbidity and mortality rates for these patients remain high. Between 2006 and 2011, we retrospectively analyzed the cases of 131 patients who underwent emergency surgery for incarcerated abdominal wall hernias. Of these, there were 70 women (53.4%) and 61 men (46.6%) with an average age of 63.3 ± 17.4 years (range, 17–91 years). Morbidity was observed in 28 patients (21.4%), and the mortality rate was 2.3%. Intestinal resection, presence of concomitant disease, and general anesthesia were the independent variants that affected morbidity of patients with incarcerated abdominal wall hernias.     

Endoscopic retrograde cholangiopancreatography in hepatic alveolar echinococcosis

Background and Aim:  Hepatic alveolar echinococcosis (HAE) involves both the vascular and biliary structures of the liver. Endoscopic retrograde cholangiopancreatography (ERCP) is said to be an alternative for the diagnosis and treatment of biliary complications of HAE. We present here our experience with ERCP in HAE.
Methods:  We followed 13 patients who underwent ERCP for the treatment of biliary complications of HAE in the endoscopy unit of our clinic at Ataturk University School of Medicine, Erzurum between January 2002 and June 2008.
Results:  Eight men and five women were followed up. Mean age was 43.2 (24–64 years). All patients had non-resectable HAE. Indications for ERCP were biliary fistula in seven patients, obstructive jaundice in five patients and cholangitis in one patient. Endoscopic sphincterotomy (ES) was carried out in 12 patients, and in one patient with biliary leakage, a stent was inserted into the right hepatic branch. ERCP findings were dilated common bile duct, irregular narrowing and distortion of the common bile duct and common hepatic duct, communication with the cystic cavity or biliocutaneous fistula and complete disappearance of the biliary tree above the level of the common hepatic duct or hepatic bifurcation. In patients with biliary leakage, biliary drainage decreased only in two patients after ERCP and in patients with obstructive jaundice, the high bilirubin levels decreased in only one patient.
Conclusion:  ERCP showed structural changes of the external biliary tract and ES has a limited effect on these changes and stents can be used in selected cases.