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Longitudinal outcomes of obeticholic acid therapy in ursodiol-nonresponsive primary biliary cholangitis: Stratifying the impact of add-on fibrates in real-world practice. Aliment Pharmacol Ther 2024; 59:1604-1615. [PMID: 38690746 DOI: 10.1111/apt.18004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/06/2024] [Accepted: 04/07/2024] [Indexed: 05/03/2024]
Abstract
BACKGROUND Suboptimal response to ursodeoxycholic acid occurs in 40% of primary biliary cholangitis (PBC) patients, affecting survival. Achieving a deep response (normalisation of alkaline phosphatase [ALP] and bilirubin ≤0.6 upper limit of normal) improves survival. Yet, the long-term effectiveness of second-line treatments remains uncertain. AIMS To evaluate the long-term effectiveness of obeticholic acid (OCA) ± fibrates. Focusing on biochemical response (ALP ≤1.67 times the upper limit of normal, with a decrease of at least 15% from baseline and normal bilirubin levels), normalisation of ALP, deep response and biochemical remission (deep response plus aminotransferase normalisation). METHODS We conducted a longitudinal, observational, multicentre study involving ursodeoxyccholic acid non-responsive PBC patients (Paris-II criteria) from Spain and Portugal who received OCA ± fibrates. RESULTS Of 255 patients, median follow-up was 35.1 months (IQR: 20.2-53). The biochemical response in the whole cohort was 47.2%, 61.4% and 68.6% at 12, 24 and 36 months. GLOBE-PBC and 5-year UK-PBC scores improved (p < 0.001). Triple therapy (ursodeoxycholic acid plus OCA plus fibrates) had significantly higher response rates than dual therapy (p = 0.001), including ALP normalisation, deep response and biochemical remission (p < 0.001). In multivariate analysis, triple therapy remained independently associated with biochemical response (p = 0.024), alkaline phosphatase normalisation, deep response and biochemical remission (p < 0.001). Adverse effects occurred in 41.2% of cases, leading to 18.8% discontinuing OCA. Out of 55 patients with cirrhosis, 12 developed decompensation. All with baseline portal hypertension. CONCLUSION Triple therapy was superior in achieving therapeutic goals in UDCA-nonresponsive PBC. Decompensation was linked to pre-existing portal hypertension.
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Advancing ocular safety research: A comprehensive examination of benzocaine acute exposure without animal testing. Toxicol Lett 2024; 394:138-145. [PMID: 38458340 DOI: 10.1016/j.toxlet.2024.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 03/01/2024] [Accepted: 03/05/2024] [Indexed: 03/10/2024]
Abstract
Benzocaine is a widely employed local anaesthetic; however, there is a notable dearth of preclinical and clinical evidence regarding its safety in ophthalmological products. To address this, a comprehensive strategy incorporating in silico and in vitro methodologies was proposed for assessing benzocaine's ocular toxicity without animal testing. To collect the in silico evidence, the QSAR Toolbox (v4.5) was used. A single exposure to two benzocaine concentrations (2% and 20%) was evaluated by in vitro methods. Hen's Egg Chorioallantoic Membrane Test (HET-CAM) was performed to evaluate the effects on the conjunctiva. To study corneal integrity, Short Time Exposure test (STE) and Bovine Corneal Opacity and Permeability (BCOP) assay, followed by histopathological analysis, were carried out. Results from both in silico and in vitro methodologies categorize benzocaine as non-irritating. The histopathological analysis further affirms the safety of using benzocaine in eye drops, as no alterations were observed in evaluated corneal strata. This research proposes a useful combined strategy to provide evidence on the safety of local anaesthetics and particularly show that 2% and 20% benzocaine solutions do not induce eye irritation or corneal damage, supporting the potential use of benzocaine in the development of ophthalmic anesthetic products.
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Effectiveness and safety of obeticholic acid in a Southern European multicentre cohort of patients with primary biliary cholangitis and suboptimal response to ursodeoxycholic acid. Aliment Pharmacol Ther 2021; 53:519-530. [PMID: 33314220 DOI: 10.1111/apt.16181] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/02/2020] [Accepted: 11/10/2020] [Indexed: 12/09/2022]
Abstract
BACKGROUND Obeticholic acid (OCA) was recently approved as the only on-label alternative for patients with primary biliary cholangitis (PBC) with intolerance or suboptimal response to ursodeoxycholic acid (UDCA). However, few data are available outside clinical trials. AIM To assess the effectiveness and safety of OCA in a real-world cohort of patients with non-effective UDCA therapy. METHODS Open-label, prospective, real-world, multicentre study, enrolling consecutive patients who did not meet Paris II criteria, from 18 institutions in Spain and Portugal. Effectiveness was assessed by the changes in GLOBE and UK-PBC scores from baseline. POISE and Paris II criteria were evaluated after 12 months of OCA . Liver fibrosis was evaluated by FIB-4 and AST to platelet ratio index (APRI). RESULTS One hundred and twenty patients were eligible, median time since PBC diagnosis 9.3 (4.0-13.8) years, 21.7% had cirrhosis, and 26.7% received had previous or concomitant treatment with fibrates. Seventy-eight patients completed at least 1 year of OCA. The Globe-PBC score decreased to 0.17 (95% CI 0.05 to 0.28; P = 0.005) and the UK-PBC score decreased to 0.81 (95% CI -0.19 to 1.80; P = 0.11). There was a significant decrease in alkaline phosphatase of 81.3 U/L (95% CI 42.5 to 120; P < 0.001), ALT 22.1 U/L (95% CI 10.4 to 33.8; P < 0.001) and bilirubin 0.12 mg/dL (95% CI 0 to 0.24; P = 0.044). FIB-4 and APRI remained stable. According to the POISE criteria, 29.5% (23 out of 78) achieved response. The adverse events rate was 35%; 11.67% discontinued (8.3% due to pruritus). CONCLUSIONS This study supports data from phase III trials with significant improvement of PBC-Globe continuous prognostic marker score among OCA-treated patients with good tolerability.
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Cellular automata model for human articular chondrocytes migration, proliferation and cell death: An in vitro validation. In Silico Biol 2019; 12:83-93. [PMID: 26756921 DOI: 10.3233/isb-150466] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Articular cartilage is characterized by low cell density of only one cell type, chondrocytes, and has limited self-healing properties. When articular cartilage is affected by traumatic injuries, a therapeutic strategy such as autologous chondrocyte implantation is usually proposed for its treatment. This approach requires in vitro chondrocyte expansion to yield high cell number for cell transplantation. To improve the efficiency of this procedure, it is necessary to assess cell dynamics such as migration, proliferation and cell death during culture. Computational models such as cellular automata can be used to simulate cell dynamics in order to enhance the result of cell culture procedures. This methodology has been implemented for several cell types; however, an experimental validation is required for each one. For this reason, in this research a cellular automata model, based on random-walk theory, was devised in order to predict articular chondrocyte behavior in monolayer culture during cell expansion. Results demonstrated that the cellular automata model corresponded to cell dynamics and computed-accurate quantitative results. Moreover, it was possible to observe that cell dynamics depend on weighted probabilities derived from experimental data and cell behavior varies according to the cell culture period. Thus, depending on whether cells were just seeded or proliferated exponentially, culture time probabilities differed in percentages in the CA model. Furthermore, in the experimental assessment a decreased chondrocyte proliferation was observed along with increased passage number. This approach is expected to having other uses as in enhancing articular cartilage therapies based on tissue engineering and regenerative medicine.
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Growth plate stress distribution implications during bone development: a simple framework computational approach. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2015; 118:59-68. [PMID: 25453383 DOI: 10.1016/j.cmpb.2014.10.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 09/22/2014] [Accepted: 10/08/2014] [Indexed: 06/04/2023]
Abstract
Mechanical stimuli play a significant role in the process of long bone development as evidenced by clinical observations and in vivo studies. Up to now approaches to understand stimuli characteristics have been limited to the first stages of epiphyseal development. Furthermore, growth plate mechanical behavior has not been widely studied. In order to better understand mechanical influences on bone growth, we used Carter and Wong biomechanical approximation to analyze growth plate mechanical behavior, and explore stress patterns for different morphological stages of the growth plate. To the best of our knowledge this work is the first attempt to study stress distribution on growth plate during different possible stages of bone development, from gestation to adolescence. Stress distribution analysis on the epiphysis and growth plate was performed using axisymmetric (3D) finite element analysis in a simplified generic epiphyseal geometry using a linear elastic model as the first approximation. We took into account different growth plate locations, morphologies and widths, as well as different epiphyseal developmental stages. We found stress distribution during bone development established osteogenic index patterns that seem to influence locally epiphyseal structures growth and coincide with growth plate histological arrangement.
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Immunophenotypic alterations of bone marrow myeloid cell compartments in multiple myeloma patients predict for myelodysplasia-associated cytogenetic alterations. Leukemia 2014; 28:1747-50. [PMID: 24625552 DOI: 10.1038/leu.2014.103] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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FLAGIDA-lite is an effective regimen for patients between 70 and 80 years with acute myeloid leukemia or refractory anemia with excess blasts-2 and is feasible as outpatient treatment. Am J Hematol 2012; 87:42-4. [PMID: 22015963 DOI: 10.1002/ajh.22192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Accepted: 09/13/2011] [Indexed: 11/10/2022]
Abstract
We investigated a FLAGIDA-lite protocol (fludarabine 40 mg/m(2)/d orally days 1-5, cytarabine 20 mg/m(2)/d subcutaneously days 1-5, G-CSF 300 μg/d subcutaneously days 1-5, and idarrubicin 15 mg/m(2)/d orally days 1-3) in 38 consecutive patients older than 70 years of age with acute myeloid leukemia (32 patients) or refractory anemia with excess blasts-2 (six patients) and no prior therapy. Seventy-nine percent had intermediate/unfavorable karyotype and 79% had a high comorbidity. Overall response was 55% [complete response (CR) 47%] and 37% were refractory. CR rate was 52% in patients between 71 and 79 years of age and 38% in patients 80 years or older. The 4-week induction mortality was 16% (8% in patients between 70 and 79 years of age and 32% in patients 80 years or older). Overall survival (OS) at 3 years was 22% (31.3% in patients between 70 and 79 years and 15.4% in patients 80 years or older). Relapse-free survival (RFS) at 3 years was 15%. A total of 65 cycles (47 as induction and 18 as consolidation) were administered, 46 of them (70%) in an outpatient setting. In summary, this FLAGIDA-lite protocol is an effective and well-tolerated option for patients between the ages of 70 and 79 years with acute myeloid leukemia or refractory anemia with excess blasts-2 and is usually feasible as outpatient treatment, but is not beneficial for most patients 80 years or older.
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[Effect of pentoxifylline on survival, cardiac function and both portal and systemic hemodynamics in advanced alcoholic cirrhosis--a randomized double-blind placebo-controlled trial]. REVISTA ESPANOLA DE ENFERMEDADES DIGESTIVAS 2009; 100:481-9. [PMID: 18942901 DOI: 10.4321/s1130-01082008000800007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To assess the effect of pentoxiphylline (a potent inhibitor of tumor necrosis factor alpha) on survival, on systemic and portal hemodynamics, and on cardiac function in patients with alcoholic cirrhosis. DESIGN A randomized double-blind placebo-controlled trial. SETTING A single center using parallel groups of patients to compare pentoxiphylline with placebo. PATIENTS We recruited 24 patients with alcoholic cirrhosis (8 Child-Pugh B and 16 Child-Pugh C). INTERVENTIONS Patients were randomly assigned to receive pentoxiphylline (400 mg tid; n = 12) or placebo (n = 12) over a 4-week period. OUTCOME MEASURES The primary outcome was to extend short-term and long-term survival. Secondary outcomes included hemodynamic benefits (improvement in cardiac function and/or systemic vascular resistance index, or decrease in portal pressure). RESULTS Portal pressure and cardiac function remained unchanged and there were no significant differences in short-term or long-term survival between treatment and placebo groups. The group on pentoxiphylline increased systemic vascular resistance and decreased cardiac indices (from 1,721 +/- 567 to 2,082 +/- 622 dyn.sec(-1) cm(-5) m(-2) and from 4.17 +/- 1.4 to 3.4 +/- 0.9 l.m(-2), p = 0.05). CONCLUSIONS Although pentoxiphylline seems to provide some short-term hemodynamic benefits in patients with advanced alcoholic cirrhosis, this drug has no effect on survival or portal pressure in these patients.
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Long-term reversal of hypocholesterolaemia in patients with chronic hepatitis C is related to sustained viral response and viral genotype. Aliment Pharmacol Ther 2006; 24:507-12. [PMID: 16886916 DOI: 10.1111/j.1365-2036.2006.03000.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Genotype-3 of hepatitis C virus (HCV) has been associated with serum lipid changes (reversible with sustained viral response) and liver steatosis. AIM To characterize the relationships among hepatic steatosis, cholesterol and sustained viral response in these patients. METHODS Patients (n = 215) with chronic hepatitis C (157 with genotype-1 of HCV) had age, body mass index, gender, alcohol intake, glycaemia, serum lipids, transaminases, grade and stage (METAVIR and Scheuer), degree of liver steatosis, sustained viral response, insulinaemia, leptinaemia, beta-hydroxybutyrate and glycerol measured, and were compared with 32 hepatitis B virus (HBV)-infected subjects. RESULTS Genotype-3 of HCV patients had age-adjusted hypocholesterolaemia and more frequent hepatic steatosis (P < 0.001). Steatosis was inversely correlated with serum cholesterol (P < 0.01) and directly with viral load (P < 0.03). In patients with genotype-3 of HCV and sustained viral response, serum cholesterol increased from 138 (95% CI: 120-151) to 180 mg/dL (95% CI: 171-199) 12 months after treatment conclusion (P < 0.0001). By contrast, cholesterol values were unchanged in genotype-3 of HCV non-responders and in patients with genotype-1 of HCV regardless of response. Rising cholesterol in sustained viral response did not parallel the changes in beta-hydroxybutyrate. CONCLUSIONS Besides causing hepatic steatosis, genotype-3 specifically decreases serum cholesterol. This interference with the metabolic lipid pathway is related to viral load, is reversed with sustained viral response, and seems unrelated to mitochondrial dysfunction.
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Abstract
Alcohol consumption, age at infection, and male gender have been identified as risk factors for faster fibrosis progression in patients with chronic hepatitis C (CHC). Yet the influence of liver steatosis, light to moderate alcohol consumption, or iron overload on this progression remains controversial. To analyze the effect of individual risk factors and their interaction on fibrosis progression in a group of patients with CHC and a definite date of infection, we studied 133 consecutive untreated patients. Covariates included were age, body mass index (BMI), gender, age at infection, alcohol intake, serum lipids, glycemia, serum ALT, AST, GGT, iron, and ferritin, grade and stage (METAVIR and Scheuer), and hepatic stainable iron (Perl's stain). The rate of fibrosis progression was inferred from the METAVIR score. By logistic regression analysis, hepatic steatosis (odds ratio [OR], 3.035; 95% confidence interval [CI], 1.16-7.93), serum ferritin levels higher than 290 ng/ml (OR, 5.5; 1.6-18.65), and light to moderate ethanol intake (1-50 g/day) (OR, 5.22; 1.5-17.67) were independently associated with faster fibrosis progression. There was no effect of interaction between these variables on the rate of fibrosis progression. Liver steatosis, serum ferritin levels, and light to moderate alcohol intake are associated with faster fibrosis progression in chronic hepatitis C. Combination of these factors did not further accelerate this progression. The impact of modification of these factors on progression should be tested in longitudinal studies.
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Abstract
BACKGROUND Endocannabinoids may participate in the homeostasis of arterial pressure. Recently, anandamide, the most extensively studied endocannabinoid, has been proposed as a key mediator in the peripheral arterial vasodilation of cirrhosis. OBJECTIVES To determine if circulating levels of anandamide are related to the extent of the peripheral arterial vasodilation, the severity of portal hypertension and the degree of liver and renal dysfunction of patients with cirrhosis. METHODS Plasma levels of anandamide and several systemic, portal and renal hemodynamic parameters were determined in 18 patients with cirrhosis and eight healthy subjects (control group). RESULTS Plasma levels of anandamide were elevated in patients compared to the control group (P<0.05), nevertheless, no differences between patients with ascites and well-compensated patients were found. There was no correlation between anandamide concentration and arterial pressure, cardiac output and systemic vascular resistance, Child-Pugh's score, portal pressure, renal vascular resistance, plasma renin activity or plasma aldosterone concentration. CONCLUSIONS Circulating levels of anandamide are increased in cirrhotic patients. However, this elevation was unrelated to the extent of arterial vasodilation, the severity of portal hypertension or the degree of hepatic and renal dysfunction. Although a local hormonal action cannot be excluded, our results do not support a relevant contribution of this system in the hemodynamic disturbance of cirrhosis.
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Abstract
OBJECTIVE Mild idiopathic adulthood ductopenia (MIAD) is an asymptomatic chronic cholestatic liver disease characterized by the loss of interlobular bile ducts in <50% of the portal tracts. Although the underlying cause of MIAD is unknown, the host factors may contribute to the patient's susceptibility to the disease. The aim of this work was to investigate the immunogenetics in the pathogenesis of MIAD. METHODS We prospectively studied 22 Caucasian patients with MIAD. Peripheral blood was collected, and HLA-DR typing was performed by polymerase chain reaction with sequence-specific primers followed by sequencing for subtyping. Results were compared with those from 140 age- and sex-matched controls. RESULTS There was no significant association between HLA-DRB1 alleles and the disease, although a trend was found in MIAD patients with the DRB1*1502 allele (five of 44 vs four of 280 in controls; p corrected = 0.055; chi2 = 13.9). Multiple HLA-DRB1 alleles (*04, *11, *15) showed increased frequencies in MIAD patients. Further subtyping revealed a motif (positions 25-32 of the beta1 chain) present in 17 (77.3%) patients, which was significantly associated with MIAD (p = 0.049; chi2 = 3.87). Seven patients (31.8%) and 21 (15%) controls coded for this motif in their two alleles (p = 0.068; chi2 = 3.76). Among MIAD patients, those seven had abnormal ALT levels (p = 0.017) and their gamma-glutamyltransferase and ALT values tended to be more increased. CONCLUSIONS These results provide evidence of an immunogenetic basis of susceptibility to MIAD in Caucasian individuals.
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Influenza virus epidemiological surveillance in Argentina, 1987-1993, with molecular characterization of 1990 and 1993 isolates. Rev Panam Salud Publica 1998; 4:405-10. [PMID: 9924519 DOI: 10.1590/s1020-49891998001200008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
This report describes findings from epidemiological surveillance of influenza virus in two cities in Argentina (Mar del Plata and Córdoba) from 1987 to 1993. It includes information on reporting and serologic characterization of isolated influenza viruses. In addition, determination was made of the nucleotide sequences of the HA1 subunits of five type A (subtype H3) viral strains isolated in the epidemics of 1990 and 1993. The incidence of illness, type of viruses isolated, and H gene sequences were similar to what has been reported from other parts of the world during the same period. The H3 strains isolated in the 1990 and 1993 seasons were somewhat removed in their molecular characteristics from the strains the World Health Organization recommended for vaccines for those years, and appeared closer to the strains recommended for vaccination in subsequent seasons.
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Abstract
Energy Filtered Transmission Electron Microscopy (EFTEM) has been used to study nucleic acids localization in unstained thin sections of virus-infected cells. For this purpose, phosphorus maps (P-maps) have been obtained by applying the N-windows Egerton model for background subtraction from data acquired by a non-dedicated TEM Jeol 1200EXII equipped with a post-column PEELS Gatan 666-9000 and a Gatan Image Filter (GIF-100). To prevent possible errors in the evaluation of elemental maps and thus incorrect nucleic acid localization, we have studied different regions of swine testis (ST) cells with similar local density containing either high concentration of nucleic acids (condensed chromatin and ribosomes) or a very low concentration (mitochondria). Special care was taken to optimize the sample preparation conditions to avoid as much as possible the traditional artifacts derived from this source. Selection of the best set of pre-edge images for background fitting was also considered in order to produce "true P-maps". A new software for interactive processing of images series has been applied to estimate this set. Multivariate Statistical Analysis was used as a filtering tool to separate the "useful information" present in the inelastic image series (characteristic signal) from the "non-useful information" (noise and acquisition artifacts). The reconstitution of the original image series preserving mainly the useful information allowed the computation of P-maps with improved signal-to-noise ratio (SNR). This methodology has been applied to study the RNA content of maturation intermediate coronavirus particles found inside infected cells.
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Intestinal endometriosis as a cause of chronic abdominal pain leading to intestinal obstruction. Am J Gastroenterol 1997; 92:525-6. [PMID: 9068486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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[Large hepatic adenoma in a male patient]. REVISTA ESPANOLA DE ENFERMEDADES DIGESTIVAS : ORGANO OFICIAL DE LA SOCIEDAD ESPANOLA DE PATOLOGIA DIGESTIVA 1997; 89:222-4. [PMID: 9198482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Hepatic adenoma is a benign neoplasm found in women on oral contraceptives over long periods of time. Its incidence in men is lower, associated with androgen on anabolic steroid treatment, diabetes, storage diseases (glycogenosis type I and VI), barbiturates and clomiphene. We report a case of a man with a large hepatic adenoma without previous history of predisposing factors. The treatment was surgical because of the uncertain behaviour of this lesion.
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[Effects of propranolol and hydralazine on the blood pressure and renal function in the uremic patient]. LA PRENSA MEDICA MEXICANA 1977; 42:462-7. [PMID: 351598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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[Effects of furosemide on glomerular filtration, renal blood flow and the cortico-medullary-osmotic gradient in dogs]. ARCHIVOS DEL INSTITUTO DE CARDIOLOGIA DE MEXICO 1971; 41:285-93. [PMID: 5566600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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