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1.
JAMA Oncol ; 6(1): 125-132, 2020 Jan 01.
Article in English | MEDLINE | ID: mdl-31580386

ABSTRACT

Importance: Genomes of metastatic pancreatic cancers frequently contain intrachromosomal aberrations, indicating a DNA repair deficiency associated with sensitivity to DNA damaging agents, such as platinum. Objective: To determine response rate following treatment with nab-paclitaxel plus gemcitabine plus platinum-based cisplatin for patients with metastatic pancreatic ductal adenocarcinoma (PDA). Design, Setting, and Participants: This was a single-arm, open-label, phase 1b/2 clinical trial of nab-paclitaxel plus gemcitabine plus cisplatin treatment in which 25 patients with previously untreated metastatic PDA were enrolled. The trial was conducted from December 2013 to July 2016 at 3 US sites, with the last patient receiving study treatment at the end of October 2016, and the study closing January 2018. Interventions: Patients were treated with nab-paclitaxel plus gemcitabine plus various doses of cisplatin, 25 mg/m2, 37.5 mg/m2, and 50 mg/m2, on days 1 and 8 of a 21-day cycle. Main Outcomes and Measures: Primary end point was complete response rate as assessed by Response Evaluation Criteria in Solid Tumors, version 1.1 (RECIST), and levels of carbohydrate antigen 19-9 (or in nonexpressers, carbohydrate antigen 125 or carcinoembryonic antigen). Efficacy analysis included evaluable patients (those who received at least 1 dose of study treatment and had at least 1 postbaseline tumor assessment). Results: Of 25 patients enrolled in the study, the median (range) age was 65.0 (47.0-79.0) years, 14 (56%) were men, and most (24) were white (96%). The maximum tolerable dose of cisplatin was 25 mg/m2. The most common treatment-related adverse events grade 3 or higher were thrombocytopenia (17 patients [68%]), anemia (8 patients [32%]), and neutropenia (6 patients [24%]). Fatal events occurred for 3 patients (12%); 2 were related to study participation. A median (range) of 8 (1-15) cycles was completed. The RECIST responses in 24 evaluable patients included 2 complete responses (8%), which was below the primary end point of 25%, 15 partial responses (62%), 4 stable disease (17%), and 3 progressive disease (12%), with median overall survival of 16.4 (95% CI, 10.2-25.3) months; 16 patients (64%) were alive at 1 year, 10 (40%) at 2 years, 4 (16%) at 3 years, and 1 (4%) at 4 plus years. Overall survival ranged from 36 to 59 months. Median progression-free survival was 10.1 (95% CI, 6.0-12.5) months. Thus, the overall response rate was 71%, and the disease control rate was 88%. Conclusions and Relevance: This triple drug regimen showed substantial clinical activity in this small study. Although the primary end point was not reached, the high overall response rate, disease control rate, and median survival time among patients with advanced PDA treated with this combination are encouraging. The regimen is being studied in patients with PDA in the neoadjuvant setting and in patients with advanced biliary cancers. Trial Registration: ClinicalTrials.gov identifier: NCT01893801.

2.
Osteoporos Int ; 30(5): 1111-1115, 2019 May.
Article in English | MEDLINE | ID: mdl-30613866

ABSTRACT

At denosumab discontinuation, an antiresorptive agent is indicated to reduce the high bone turnover, the rapid bone loss, and the risk of spontaneous vertebral fractures. We report two cases of postmenopausal women, previously exposed to bisphosphonates, treated with alendronate at denosumab discontinuation. Alendronate was ineffective to avoid spontaneous clinical vertebral fractures. They presented three and nine spontaneous vertebral fractures 8 and 12 months after denosumab discontinuation, respectively. Ineffectiveness of alendronate was attributed to insufficient control of the rebound as assessed by B-crosslaps measures in the first case, and partially to the high risk of fractures in the later. In both situations, the increased fracture risk may have favoured these new fractures. It is urgent to define effective therapeutic strategies to avoid spontaneous vertebral fractures after denosumab discontinuation.


Subject(s)
Alendronate/therapeutic use , Bone Density Conservation Agents/therapeutic use , Denosumab/therapeutic use , Osteoporotic Fractures/prevention & control , Spinal Fractures/prevention & control , Aged , Alendronate/administration & dosage , Bone Density Conservation Agents/administration & dosage , Denosumab/administration & dosage , Drug Administration Schedule , Drug Substitution , Female , Humans , Magnetic Resonance Imaging , Osteoporosis, Postmenopausal/drug therapy , Osteoporotic Fractures/diagnostic imaging , Radiography , Spinal Fractures/diagnostic imaging , Treatment Failure
3.
Life Sci ; 213: 214-225, 2018 Nov 15.
Article in English | MEDLINE | ID: mdl-30343127

ABSTRACT

AIMS: Cardiovascular diseases such as hypertension, thrombosis and atherosclerosis are responses to mechanical forces applied to the endothelium. Endothelial cells respond to hemodynamic mechanical forces such as cellular mechanical stretching. We investigated the expression of glycosaminoglycans, proteoglycans and other extracellular matrix molecules in endothelial cells subjected to various mechanical stimuli. MAIN METHODS: Endothelial cells were subjected to mechanical stretch in a vacuum system FlexCell™ to 5% (physiological condition) and 15% (pathological condition), for 4 h or 24 h. Culture plates not subjected to strain were used as controls. Subsequently, ECs were subjected to immunofluorescence, real-time PCR, PCR array, glycosaminoglycans biosynthesis using metabolic radiolabeling with 35S-sulfate and cell behavior assays (adhesion, migration and capillary tube formation). KEY FINDINGS: Mechanical stretch induced changes in endothelial cell morphology. Pathological consequences of mechanical stretch included inhibited migration in 2-fold and capillary-like tube formation in 2-fold, when compared to physiological condition after 4 h of ECs exposure; it also reduced total sulfated glycosaminoglycans synthesis thereabout 1.5-fold. Pathological mechanical stretch conditions induced higher expression after 24 h of ECs exposure to mechanical stretch of syndecan-4 (3.5-fold), perlecan (9.1-fold), decorin (5.7-fold), adhesive proteins as fibronectin (5.6-fold) and collagen III α1 (2.2-fold) and growth factors, including VEGF-A (7.3-fold) and TGFß-1 (14.6-fold) and TGFß-3 (4.3-fold). SIGNIFICANCE: Exposure of endothelial cells to mechanical stretch influenced remodeling of the extracellular matrix as well as cell-matrix interactions. These studies improve understanding of how vascular biology is affected by mechanical forces and how these molecules behave in cardiovascular diseases.


Subject(s)
Biomechanical Phenomena/physiology , Endothelial Cells/metabolism , Extracellular Matrix/physiology , Animals , Cell Shape , Cells, Cultured , Collagen/metabolism , Collagen Type III/metabolism , Decorin/metabolism , Endothelial Cells/physiology , Extracellular Matrix Proteins/metabolism , Fibronectins/metabolism , Glycosaminoglycans/metabolism , RNA, Messenger/metabolism , Rabbits , Stress, Mechanical
4.
Osteoporos Int ; 28(3): 909-915, 2017 03.
Article in English | MEDLINE | ID: mdl-27900426

ABSTRACT

We evaluated the influence of degenerative disease and fractured vertebra on lumbar spine bone mineral density (BMD) and trabecular bone score (TBS) in 1500 women aged 50-80 years. TBS was not affected by a degenerative disease. While BMD increases after 62.5 years, TBS continues to decline. TBS should play a leading role in lumbar spine evaluation. INTRODUCTION: After menopause, lumbar spine (LS) BMD and TBS values decrease. Degenerative disease (DD) increases with age and affect LS BMD. The aim of this study was to measure changes in LS BMD and TBS in women 50 to 80 years old, taking into account the impact of fractured vertebrae and DD. METHODS: LS BMD, TBS, and vertebral fracture assessment were evaluated in the OsteoLaus cohort (1500 women, 50-80 years old). The exams were analyzed following ISCD guidelines to identify vertebrae with fractures or DD (Vex). RESULTS: 1443 women were enrolled: mean age 66.7 ± 11.7 years, BMI 25.7 ± 4.4. LS BMD and TBS were weakly correlated (r2 = 0.16). The correlation (Vex excluded) between age and BMD was +0.03, between age and TBS -0.34. According to age group, LS BMD was 1.2 to 3.2% higher before excluding Vex (p < 0.001). TBS had an insignificant change of <1% after excluding Vex. LS BMD (Vex) decreased by 4.6% between 52.5 and 62.5 years, and increased by 2.6% between 62.5 and 77.5 years. TBS (Vex excluded) values decreased steadily with age with an overall loss of 8.99% between 52.5 and 77.5 years. Spine TBS, femoral neck, and total hip BMD gradually decreased with age, reaching one SD between the oldest and youngest group. CONCLUSIONS: TBS is not affected by DD. While BMD increases after 62.5 years, TBS continues to decline. For lumbar spine evaluation, in view of its independence from DD, TBS should play a leading role in the diagnosis in complement to BMD.


Subject(s)
Bone Density/physiology , Cancellous Bone/physiopathology , Lumbar Vertebrae/physiopathology , Osteoporosis, Postmenopausal/physiopathology , Spinal Diseases/physiopathology , Absorptiometry, Photon , Age Distribution , Aged , Aged, 80 and over , Cohort Studies , Female , Femur Neck/physiopathology , Humans , Middle Aged , Osteoporosis, Postmenopausal/diagnosis , Osteoporotic Fractures/diagnosis , Osteoporotic Fractures/physiopathology , Spinal Fractures/physiopathology
5.
Article in English | MEDLINE | ID: mdl-27424517

ABSTRACT

BACKGROUND: The role of gastroesophageal reflux in chronic laryngeal symptoms is difficult to establish. The aim of this study was to characterize pharyngeal and esophageal pH-impedance reflux patterns in a group of patients with suspected laryngopharyngeal reflux and to determine predictive factors of response to proton pump inhibitors. METHODS: Patients with chronic pharyngolaryngeal symptoms were evaluated with a symptom score questionnaire, laryngoscopy, and 24-hour pharyngeal and esophageal pH-impedance monitoring at baseline and after 8-week treatment with esomeprazole 40 mg b.i.d. Response to treatment was defined by a diminution of more than 50% of the score for the primary symptom. Reflux patterns and baseline impedance values were compared to those obtained in 46 healthy subjects. KEY RESULTS: Twenty-four patients were included (17 women, median age 54 years), all previously refractory to antisecretory therapy. Symptom scores were 46 (32-62) and 40 (27-76) off and on therapy, respectively (P=.1). There was no significant difference between patients and controls for pH-impedance reflux parameters and baseline values off and on therapy in distal and proximal esophagus and in the pharynx. Median numbers of pharyngeal reflux were 0 and 0 off and on therapy, respectively. Only two patients were responders to treatment, both with excessive distal reflux but no pharyngeal reflux. Only one patient had abnormal pharyngeal reflux but did not respond to proton pump inhibitors. CONCLUSIONS: Patients with suspected laryngopharyngeal reflux refractory to therapy do not exhibit abnormal pharyngeal or esophageal pH-impedance reflux. In these patients, laryngopharyngeal reflux is unlikely.


Subject(s)
Electric Impedance , Esophageal pH Monitoring/methods , Esophagus/physiopathology , Laryngopharyngeal Reflux/physiopathology , Pharynx/physiopathology , Proton Pump Inhibitors/therapeutic use , Adult , Aged , Drug Resistance/drug effects , Drug Resistance/physiology , Esophagus/drug effects , Female , Humans , Laryngopharyngeal Reflux/diagnosis , Laryngopharyngeal Reflux/drug therapy , Male , Middle Aged , Monitoring, Ambulatory/methods , Pharynx/drug effects , Prospective Studies , Treatment Outcome
6.
Osteoporos Int ; 27(5): 1923-5, 2016 May.
Article in English | MEDLINE | ID: mdl-26510845

ABSTRACT

Osteoporosis treatments are usually given for a limited period of time in order to balance benefits and risks. We report three cases of postmenopausal women without any previous fragility fracture who presented severe spontaneous vertebral fractures after denosumab discontinuation. We think that the occurrence of these fractures could be explained by the severe rebound effect observed after denosumab discontinuation and that a consensus regarding the end of treatment with denosumab has to be defined.


Subject(s)
Bone Density Conservation Agents/administration & dosage , Denosumab/administration & dosage , Fractures, Spontaneous/etiology , Osteoporotic Fractures/etiology , Spinal Fractures/etiology , Aged , Bone Density Conservation Agents/therapeutic use , Denosumab/therapeutic use , Drug Administration Schedule , Female , Fractures, Spontaneous/prevention & control , Humans , Middle Aged , Osteoporosis, Postmenopausal/complications , Osteoporosis, Postmenopausal/drug therapy , Osteoporotic Fractures/prevention & control , Spinal Fractures/prevention & control , Withholding Treatment
7.
Mycotoxin Res ; 31(4): 191-201, 2015 Nov.
Article in English | MEDLINE | ID: mdl-26412448

ABSTRACT

Plastic mulching (PM) is widely used in modern agriculture because of its advantageous effects on soil temperature and water conservation, factors which strongly influence the microbiology of the soil. The aim of this study was to assess the effect of PM on mycotoxin occurrence in relation with mycobiome abundance/diversity and soil physicochemical properties. Soil samples were collected from green (GA) and white asparagus (WA) crops, the last under PM. Both crops were cultivated in a ridge-furrow-ridge system without irrigation. Samples were analyzed for mycotoxin occurrence via liquid chromatography coupled to high-resolution mass spectrometry (LC-HRMS). Total colony-forming unit was indicative of mycobiome abundance, and analysis of mycobiome diversity was performed by internal transcribed spacer (ITS) sequencing. PM avoided the drop of soil temperature in winter and allowed higher soil temperature in early spring compared to non-covered soil. Moreover, the use of PM provided controlled conditions for water content in soil. This was enough to generate a dissimilar mycotoxin occurrence and mycobiome diversity/abundance in covered and non-covered soil. Mycotoxin soil contamination was confirmed for deoxynivalenol (DON), range LOD to 32.1 ng/g (LOD = 1.1 ng/g). The DON values were higher under PM (average 16.9 ± 10.1 ng/g) than in non-covered soil (9.1 ± 7.9 ng/g); however, this difference was not statically significant (p = 0.09). Mycobiome analysis showed a fungal compartment up to fivefold higher in soil under PM compared to GA. The diversity of the mycobiome varied between crops and also along the soil column, with an important dominance of Fusarium species at the root zone in covered soils.


Subject(s)
Agriculture/methods , Biodiversity , Fungi/isolation & purification , Liliaceae/growth & development , Mycotoxins/analysis , Soil Microbiology , Soil/chemistry , Chromatography, Liquid , Cluster Analysis , DNA, Fungal/chemistry , DNA, Fungal/genetics , DNA, Ribosomal Spacer/chemistry , DNA, Ribosomal Spacer/genetics , Fungi/classification , Mass Spectrometry , Molecular Sequence Data , Phylogeny , Plastics , Sequence Analysis, DNA
8.
Rev Med Suisse ; 11(466): 663-7, 2015 Mar 18.
Article in French | MEDLINE | ID: mdl-25962228

ABSTRACT

Pseudoarthrosis is defined as a non healing fracture 9 months after trauma and without radiological progression within the last three months. Osteoporotic fractures have a greater risk of chirurgical complications. The question of giving a medical treatment in the purpose of accelerating fracture healing is an increasing concern. There are data showing that with teriparatide (bone anabolic treatment derived from the parathyroid hormone) bone healing and functional status are improved, with or without surgery, in the case of either typical or atypical fractures. The risks of this treatment are low but health insurance agreement is needed in this indication. We report our experience with the use of this molecule, out of the official indication, in complex situations of non healing fractures.


Subject(s)
Bone Density Conservation Agents/therapeutic use , Fracture Healing/drug effects , Pseudarthrosis/drug therapy , Teriparatide/therapeutic use , Adult , Aged , Aged, 80 and over , Female , Fractures, Bone/drug therapy , Fractures, Bone/pathology , Humans , Male , Middle Aged , Osteoporotic Fractures/drug therapy , Osteoporotic Fractures/pathology , Pseudarthrosis/pathology
9.
J Food Prot ; 77(4): 647-52, 2014 Apr.
Article in English | MEDLINE | ID: mdl-24680079

ABSTRACT

Growth and mycotoxin biosynthesis of the ochratoxin-producing fungal strains Aspergillus carbonarius, Aspergillus steynii, Penicillium verrucosum, and Penicillium nordium were analyzed on standard laboratory growth medium supplemented with different amounts of coumarin, an organic compound of the benzopyrone class. Neither the growth nor the phenotypic morphology of the filamentous fungi analyzed was affected by using coumarin concentrations equivalent to 2.5 to 25 µg/ml of medium. In contrast, the ochratoxin biosynthesis was strongly inhibited in both strains of the Aspergillus species and nearly completely inhibited in both Penicillium strains at coumarin concentrations above 8.75 µg/ml. Analyzing the transcriptional activity of the otapksPN polyketide synthase gene in P. nordicum using real-time PCR revealed a strong concentration-dependent decrease in gene expression. Taken together, the data show that ochratoxin biosynthesis in representative strains of the genera Aspergillus and Penicillium could be effectively inhibited by coumarin in a concentration-dependent manner. It could be suggested that the molecular background behind this inhibition is some kind of feedback response mechanism, based on the structural similarity of coumarin to the benzopyrone moiety of the ochratoxin molecule.


Subject(s)
Antifungal Agents/pharmacology , Aspergillus/drug effects , Coumarins/pharmacology , Food Preservation/methods , Ochratoxins/biosynthesis , Penicillium/drug effects , Aspergillus/metabolism , Dose-Response Relationship, Drug , Food Microbiology , Ochratoxins/antagonists & inhibitors , Penicillium/metabolism
10.
Int J Food Microbiol ; 166(3): 407-12, 2013 Sep 16.
Article in English | MEDLINE | ID: mdl-24036489

ABSTRACT

Seven different commercial fungicides (Aliette, Rovral, Cantus, Ortiva, Luna Experience, Fenomenal and Mancozeb) were tested for their ability to inhibit the growth of the fungal species Penicillium nordicum, Penicillium verrucosum, Verticillium dahliae and Cladosporium sp. In case of the mycotoxigenic strains P. nordicum and P. verrucosum, the biosynthesis of the mycotoxins ochratoxin and citrinin was determined. Interestingly individual fungicides were only able to inhibit the growth of the analyzed fungi to some extent. In case of P. verrucosum the fungicide "Rovral", an iprodion belonging to the substance class of imidazoles, led to a decrease in the growth rate but to a strong induction of mycotoxin biosynthesis as has been described earlier for the strobilurins. Consequently before using a given fungicide to protect crops and enhance storage life, the applicability of this chemical compound should be tested not only for its ability to inhibit fungal growth but also for its effect on level of secondary metabolite biosynthesis.


Subject(s)
Food Microbiology , Fungi/drug effects , Fungicides, Industrial/pharmacology , Gene Expression Regulation, Fungal/drug effects , Mycotoxins/biosynthesis , Food Preservation , Fungi/genetics , Fungi/metabolism , Mycotoxins/genetics
11.
Acta Biomater ; 9(5): 6741-52, 2013 May.
Article in English | MEDLINE | ID: mdl-23333865

ABSTRACT

One procedure to treat stenotic coronary arteries is the percutaneous transluminal coronary angioplasty (PTCA). In recent years, drug-eluting stents (DESs) have demonstrated elaborate ways to improve outcomes of intravascular interventions. To enhance DESs, the idea has evolved to design stents that elute specific small interfering RNA (siRNA) for better vascular wall regeneration. Layer-by-layer (LbL) technology offers the possibility of incorporating siRNA nanoplexes (NPs) to achieve bioactive medical implant coatings. The LbL technique was used to achieve hyaluronic acid/chitosan (HA/Chi) films with incorporated Chi-siRNA NPs. The multilayer growth was monitored by quartz crystal microbalance. The coating on the stents and its thickness were analyzed using fluorescence and scanning electron microscopy. All stents showed a homogeneous coating, and the polyelectrolyte multilayers (PEMs) were not disrupted after ethylene oxide sterilization or expansion. The in vitro uptake of fluorescent-labeled NPs from PEMs in primary human endothelial cells (ECs) was analyzed by flow cytometry for 2, 6 and 9 days. Furthermore, stents coated with HA/Chi and Chi-siRNA NPs were expanded into porcine arteries and showed ex vivo delivery of NPs. The films showed no critical results in terms of hemocompatibility. This study demonstrates that Chi-siRNA NPs can be incorporated into PEMs consisting of HA and Chi. We conclude that the NPs were delivered to ECs under in vitro conditions. Furthermore, under ex vivo conditions, NPs were transferred into porcine artery walls. Due to their good hemocompatibility, they might make an innovative tool for achieving bioactive coatings for coronary stents.


Subject(s)
Biocompatible Materials , Coronary Vessels , RNA, Small Interfering/administration & dosage , Stents , Endothelium, Vascular/cytology , Flow Cytometry , Humans , Microscopy, Electron, Scanning , Microscopy, Fluorescence
12.
Osteoporos Int ; 24(2): 495-500, 2013 Feb.
Article in English | MEDLINE | ID: mdl-22426953

ABSTRACT

SUMMARY: We evaluated the effectiveness of supplementation with high dose of oral vitamin D3 to correct vitamin D insufficiency. We have shown that one or two oral bolus of 300,000 IU of vitamin D3 can correct vitamin D insufficiency in 50% of patients and that the patients who benefited more from supplementation were those with the lowest baseline levels. INTRODUCTION: Adherence with daily oral supplements of vitamin D3 is suboptimal. We evaluated the effectiveness of a single high dose of oral vitamin D3 (300,000 IU) to correct vitamin D insufficiency in a rheumatologic population. METHODS: Over 1 month, 292 patients had levels of 25-OH vitamin D determined. Results were classified as: deficiency <10 ng/ml, insufficiency ≥10 to 30 ng/ml, and normal ≥30 ng/ml. We added a category using the IOM recommended cut-off of 20 ng/ml. Patients with deficient or normal levels were excluded, as well as patients already supplemented with vitamin D3. Selected patients (141) with vitamin D insufficiency (18.5 ng/ml (10.2-29.1) received a prescription for 300,000 IU of oral vitamin D3 and were asked to return after 3 (M3) and 6 months (M6). Patients still insufficient at M3 received a second prescription for 300,000 IU of oral vitamin D3. Relation between changes in 25-OH vitamin D between M3 and M0 and baseline values were assessed. RESULTS: Patients (124) had a blood test at M3. Two (2%) had deficiency (8.1 ng/ml (7.5-8.7)) and 50 (40%) normal results (36.7 ng/ml (30.5-5.5)). Seventy-two (58%) were insufficient (23.6 ng/ml (13.8-29.8)) and received a second prescription for 300,000 IU of oral vitamin D3. Of the 50/124 patients who had normal results at M3 and did not receive a second prescription, 36 (72%) had a test at M6. Seventeen (47%) had normal results (34.8 ng/ml (30.3-42.8)) and 19 (53%) were insufficient (25.6 ng/ml (15.2-29.9)). Of the 72/124 patients who receive a second prescription, 54 (75%) had a test at M6. Twenty-eight (52%) had insufficiency (23.2 ng/ml (12.8-28.7)) and 26 (48%) had normal results (33.8 ng/ml (30.0-43.7)). At M3, 84% patients achieved a 25-OH vitamin D level >20 ng/ml. The lowest the baseline value, the highest the change after 3 months (negative relation with a correlation coefficient r = -0.3, p = 0.0007). CONCLUSIONS: We have shown that one or two oral bolus of 300,000 IU of vitamin D3 can correct vitamin D insufficiency in 50% of patients.


Subject(s)
Cholecalciferol/administration & dosage , Dietary Supplements , Vitamin D Deficiency/drug therapy , Administration, Oral , Adolescent , Adult , Aged , Aged, 80 and over , Calcifediol/blood , Cholecalciferol/therapeutic use , Dose-Response Relationship, Drug , Drug Administration Schedule , Female , Humans , Male , Middle Aged , Treatment Outcome , Vitamin D Deficiency/blood , Young Adult
13.
Klin Monbl Augenheilkd ; 230(1): 64-71, 2013 Jan.
Article in German | MEDLINE | ID: mdl-23011605

ABSTRACT

PURPOSE: The prevalence of diabetes mellitus is increasing worldwide especially in developing countries. Foot ulcerations in patients with diabetic neuropathy have a high impact in the overall amputation rate. In the present study we looked for the severity of diabetic retinopathy in patients with diabetic foot syndrome in a diabetic care unit in a sub-Sahara megacity (Kinshasa, Democratic Republic of Congo). METHOD: Forty-one patients with diabetes-related foot ulcerations (26 male, 15 female, mean age 45.6 years) were enrolled in the study. All patients underwent visual acuity evaluation and slit lamp biomicroscopy. Incidence and stage of retinopathy were evaluated by retinal funduscopy and documented by fundus photography. RESULTS: Twenty-seven eyes showed no signs of diabetic retinopathy. Forty-seven eyes were diagnosed as non-proliferative diabetic retinopathy (16 mild, 16 moderate, 15 severe). Seven eyes showed proliferative diabetic retinopathy. One patient had a unilateral central venous occlusion. In this case the classification of diabetic retinopathy was not possible because of the massive retinal bleedings. CONCLUSION: It was evident that there is a considerable discrepancy between partly extensive foot ulcerations and only mild to moderate diabetic retinopathy in most of the patients. This indicates that neuropathy-induced foot problems and microangiopathy-induced diabetic retinopathy are diabetic complications whose formal pathogenesis is only loosely correlated. Additional risk factors in local African conditions compared to Europe may play a major role in this discrepancy.


Subject(s)
Diabetic Foot/epidemiology , Diabetic Retinopathy/epidemiology , Urban Population/statistics & numerical data , Comorbidity , Democratic Republic of the Congo/epidemiology , Diabetic Foot/diagnosis , Diabetic Retinopathy/diagnosis , Female , Humans , Incidence , Male , Middle Aged , Risk Assessment
14.
Rev Med Suisse ; 8(360): 2066-8, 2070-1, 2012 Oct 31.
Article in French | MEDLINE | ID: mdl-23185928

ABSTRACT

Therapeutic goal of vitamin D: optimal serum level and dose requirements Results of randomized controlled trials and meta-analyses investigating the effect of vitamin D supplementation on falls and fractures are inconsistent. The optimal serum level 25(OH) vitamin D for musculoskeletal and global health is > or = 30 ng/ml (75 nmol/l) for some experts and 20 ng/ml (50 nmol/l) for some others. A daily dose of vitamin D is better than high intermittent doses to reach this goal. High dose once-yearly vitamin D therapy may increase the incidence of fractures and falls. High serum level of vitamin D is probably harmful for the musculoskeletal system and health at large. The optimal benefits for musculoskeletal health are obtained with an 800 UI daily dose and a serum level of near 30 ng/ml (75 nmol/l).


Subject(s)
Vitamin D/administration & dosage , Vitamin D/blood , Fractures, Bone/prevention & control , Humans
15.
Praxis (Bern 1994) ; 101(20): 1325-9, 2012 Oct 03.
Article in French | MEDLINE | ID: mdl-23032499

ABSTRACT

We report two cases of beta-thalassemia-induced osteoporosis. A man and a woman presented an osteoporosis at the densitometry and were treated with bisphoshonate iv. All the studies analysed the efficacity of bisphosphonate, in particular zoledronate seems to be effective. Concerning the pathogenesis, the RANK-RANK-Ligand and OPG play a major role in bone-resorption and seem to be the principal implicated mechanism for the development of osteoporosis in BTM. At the moment there is no study evaluating the efficacity of denosumab in the BTM.


Subject(s)
Bone Density Conservation Agents/therapeutic use , Diphosphonates/therapeutic use , Osteoporosis/drug therapy , Osteoporosis/etiology , beta-Thalassemia/complications , beta-Thalassemia/drug therapy , Absorptiometry, Photon , Adult , Antibodies, Monoclonal, Humanized/adverse effects , Antibodies, Monoclonal, Humanized/therapeutic use , Bone Density Conservation Agents/adverse effects , Denosumab , Diphosphonates/adverse effects , Female , Humans , Hypogonadism/complications , Hypogonadism/drug therapy , Imidazoles/adverse effects , Imidazoles/therapeutic use , Infusions, Intravenous , Male , Osteoporosis/diagnosis , Zoledronic Acid , beta-Thalassemia/diagnosis
16.
Praxis (Bern 1994) ; 101(14): 923-8, 2012 Jul 04.
Article in French | MEDLINE | ID: mdl-22763936

ABSTRACT

Pregnancy-associated osteoporosis usually appears during the first pregnancy and does not affect the followings. We report two cases where non-traumatic fractures have been diagnosed shortly after delivery of second pregnancies. Wide investigations could not find a cause of secondary osteoporosis. In the first case we came to the diagnosis of pregnancy-associated osteoporosis and an intravenous treatment of ibandronate has been prescribed. In the second case the bone mineral density (BMD) being almost normal and the localisation of the fracture being atypical, we concluded to a fracture of non-osteoporotic origin, probably due to mechanical stress during pregnancy. No therapy against osteoporosis has been prescribed.


Subject(s)
Breast Feeding , Fractures, Stress/diagnosis , Lumbar Vertebrae , Osteoporotic Fractures/diagnosis , Pregnancy Complications/diagnosis , Pregnancy Trimester, Third , Puerperal Disorders/diagnosis , Spinal Fractures/diagnosis , Absorptiometry, Photon , Adult , Diagnosis, Differential , Female , Humans , Lumbar Vertebrae/pathology , Magnetic Resonance Imaging , Pregnancy , Sacrum/pathology
17.
Rev Med Suisse ; 7(315): 2130, 2132-4, 2136, 2011 Nov 02.
Article in French | MEDLINE | ID: mdl-22187782

ABSTRACT

OsteoLaus is a cohort of 1400 women 50 to 80 years living in Lausanne, Switzerland. Clinical risk factors for osteoporosis, bone ultrasound of the heel, lumbar spine and hip bone mineral density (BMD), assessment of vertebral fracture by DXA, and microarchitecture evaluation by TBS (Trabecular Bone Score) will be recorded. TBS is a new parameter obtained after a re-analysis of a DXA exam. TBS is correlated with parameters of microarchitecture. His reproducibility is good. TBS give an added diagnostic value to BMD, and predict osteoporotic fracture (partially) independently to BMD. The position of TBS in clinical routine in complement to BMD and clinical risk factors will be evaluated in the OsteoLaus cohort.


Subject(s)
Absorptiometry, Photon , Bone Density , Osteoporosis, Postmenopausal/diagnosis , Osteoporotic Fractures/diagnosis , Aged , Aged, 80 and over , Algorithms , Bone Diseases, Metabolic/diagnosis , Cohort Studies , Computer Graphics , Female , Heel/diagnostic imaging , Hip/diagnostic imaging , Humans , Lumbar Vertebrae/diagnostic imaging , Middle Aged , Osteoporosis, Postmenopausal/complications , Osteoporosis, Postmenopausal/diagnostic imaging , Osteoporotic Fractures/etiology , Predictive Value of Tests , Reproducibility of Results , Risk Factors , Sensitivity and Specificity , Switzerland , Ultrasonography
18.
Rev Laryngol Otol Rhinol (Bord) ; 132(2): 103-8, 2011.
Article in French | MEDLINE | ID: mdl-22416490

ABSTRACT

OBJECTIVE: Sinonasal inverted papilloma is a rare benign tumor with a high recurrence rate and potential malignant transformation. The purpose of this study was to analyze the clinical and radiological aspects and to identify the suitable surgical approaches to be used in developing countries. METHODOLOGY: In 3 years, 7 cases have been analyzed in a retrospective study. Patients presented with unilateral nasal obstruction and epitasis, a whitish unilateral polypoid mass, sinonasal opacity with osteolysis on CT scan or on sinus X-ray. Using these data we adopted the Krouse staging which classifies the disease in four stages and accordingly the appropriate surgical approach was used. The diagnosis was confirmed by histological examination of the biopsied specimen. RESULTS: Average age 48.28 years, predominant sex male. Symptom: unilateral nasal obstruction 5, bilateral nasal obstruction 1, epistaxis 5. The average time-delay before consultation was 73 months. The combined endonasal endoscopic and vestibular was the most commonly used approach (4 cases). The results were satisfying. After a minimal follow up of 2 years, one case of recurrence was detected after 4 years. CONCLUSION: CT scan is an essential tool for the diagnosis and detecting the extension of sinonasal inverted papillomas. Better results were obtained with a surgical approach that combined a vestibular approach and an endonasal endoscopic approach in our region.


Subject(s)
Developing Countries , Nose Neoplasms/surgery , Papilloma, Inverted/surgery , Paranasal Sinus Neoplasms/surgery , Adult , Benin , Biopsy , Delayed Diagnosis , Endoscopy/methods , Female , Humans , Male , Middle Aged , Neoplasm Staging , Nose Neoplasms/diagnosis , Nose Neoplasms/pathology , Papilloma, Inverted/diagnosis , Papilloma, Inverted/pathology , Paranasal Sinus Neoplasms/diagnosis , Paranasal Sinus Neoplasms/pathology , Prognosis , Retrospective Studies , Tomography, X-Ray Computed
19.
Ann Surg Oncol ; 17(4): 1127-34, 2010 Apr.
Article in English | MEDLINE | ID: mdl-20146102

ABSTRACT

OBJECTIVES: To assess management options for ethmoid adenocarcinoma. STUDY DESIGN: Retrospective review over 28 years. PATIENTS AND METHODS: Ninety-five patients were included. Statistical analysis using the Kaplan-Meier method was performed to establish survival rates, and univariate analysis to determine prognostic factors. Independent chi(2) test was used to compare survival rates between T3 and T4a stages operated by transfacial and craniofacial approaches, respectively. RESULTS: Mean age was 64 years, and 76% patients were stage T3 or T4. Three patients had node metastasis, none of whom had distant metastases at time of diagnosis. Eighty-three percent of patients received surgery and adjuvant radiotherapy on tumor bed. Mean follow-up was 5 years. The recurrence and metastasis rate were 31 and 9% at median time of 3 years, respectively. The disease-specific 5- and 10-year survival rates were 78 and 64%, respectively. The disease-free survival rate was 61 and 44%, respectively, at the same time points. Meningo-encephalic (P = 10(-8)), orbit or infratemporal fossae (P = 0.046), and frontal sinus extension (P = 0.02) negatively impacted survival. There was no statistically significant difference in survival rate between T3 and T4a. CONCLUSIONS: Our data suggest that less surgical treatment may be needed than is usually advocated for T1-T4a tumors and that surgery alone may be appropriate for T1-T3 tumors that have been resected with adequate margins in those patients for whom excellent follow-up is anticipated. No neck irradiation is indicated for N0 disease.


Subject(s)
Adenocarcinoma/therapy , Paranasal Sinus Neoplasms/therapy , Adenocarcinoma/mortality , Adenocarcinoma/secondary , Adult , Aged , Aged, 80 and over , Combined Modality Therapy , Ethmoid Sinus , Female , Follow-Up Studies , Humans , Lymphatic Metastasis , Male , Middle Aged , Neoplasm Recurrence, Local/pathology , Neoplasm Recurrence, Local/radiotherapy , Neoplasm Recurrence, Local/surgery , Neoplasm Staging , Paranasal Sinus Neoplasms/mortality , Paranasal Sinus Neoplasms/pathology , Radiotherapy Dosage , Retrospective Studies , Surgical Procedures, Operative , Survival Rate , Treatment Outcome
20.
Neurogastroenterol Motil ; 22(2): 109-12, 2010 Feb.
Article in English | MEDLINE | ID: mdl-20067549

ABSTRACT

Laryngopharyngeal reflux (LPR) is defined by the association of laryngeal symptoms with laryngeal inflammation at laryngoscopy. However, these symptoms are difficult to characterize and the laryngoscopic signs lack specificity. Moreover, to date, the diagnosis of LPR can rely neither on esophageal investigations (endoscopy, pH/impedance monitoring) nor on response to high dose proton pump inhibitors because of a high placebo effect. Therefore, there is a need for the development of new tools which may help to better identify the subgroup of patients with laryngeal symptoms related to supra-esophageal reflux.


Subject(s)
Laryngopharyngeal Reflux/diagnosis , Laryngopharyngeal Reflux/therapy , Esophageal pH Monitoring , Humans , Laryngoscopy
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