scholarly journals Caractéristiques morpho-pédologiques et potentialités agricoles de sols développés sur roches dolomitiques dans le bassin de Taoudéni au Burkina Faso

2020 ◽  
Vol 14 (6) ◽  
pp. 2333-2351
Author(s):  
Fidèle Kabore ◽  
Edmond Hien ◽  
Tockville B. Mare ◽  
Korodjouma Ouattara ◽  
Prosper N. Zombre

Dans l’Ouest du Burkina Faso ont été identifiés des sols développés sur des dolomies. L’absence d’étude pédologique antérieure dans la région, traitant de l’implication géochimique des roches dolomitiques sur les propriétés de ces sols, a conduit à la réalisation d’une étude morpho-pédologique. Celle-ci avait pour objectif d’évaluer l’impact des carbonates sur les caractéristiques morphologiques, physiques, chimiques et hydriques des sols en vue d’en dégager les potentialités. Cette prospection menée à partir de trois transects, partant chacun des trois principales collines dolomitiques de la région (Diounkan, Souroukoudinga et Samendéni) indique l’existence d’argiles de type 2/1. Ces argiles interviennent positivement dans la structuration des sols, la rétention de l’eau et des nutriments grâce à leur CEC élevée comprise entre 11 et 20 cmol(+).kg-1. On note, par ailleurs, un déséquilibre cationique entre Ca2+et Mg2+, car le ratio Ca2+/Mg2+>1 dans l’horizon organo-minéral, devient < 1 en profondeur, traduisant ainsi un excès de Mg2+ à ce niveau. Les rapports Mg2+/K+ et Ca2+/K+ parfois > 50 et le ratio K+/CEC < 0,05, indiquent une carence en K+. Par conséquent, le potassium pourrait constituer, avec le phosphore (< 5 mg.kg-1), les principaux facteurs limitant la productivité des sols. L’utilisation durable de ces sols exige un choix judicieux des types de cultures et un mode de fertilisation organo-minérale pour compenser les carences. Mots clés: Argiles, cations, antagonisme potassium-magnésium, fertilité du sol, roches dolomitiques. English Title: Morpho-pedological characteristics and agricultural potentialities of soils developed on dolomitic rocks in the Taoudeni basin in Burkina FasoIn western of Burkina Faso, soils developed on dolostones have been identified. Lack of previous soil study in the region, dealing with the geochemical implication of dolomitic rocks on the properties of these soils, led to the realization of a morpho-pedological study. The purpose of this study was to assess the impact of carbonates on the morphological, physical, chemical and water characteristics of the soils in order to identify their potential. This prospecting carried out starting from three transects, starting each from the three main dolomitic hills of the region (Diounkan, Souroukoudinga and Samendeni) indicates the existence of type 2/1 clays. These clays play a positive role in the structuring of soils, the retention of water and nutrients thanks to their high CEC between 11 and 20 cmol(+)kg-1. There is also a cationic imbalance between Ca2+ and Mg2+, because Ca2+/Mg2+ > 1 ratio in the organo-mineral horizon becomes < 1 from the median horizon, thus reflecting an excess of Mg2+ at this level. The Mg2+/K+ and Ca2+/K+ ratios sometimes > 50 and the K+/CEC ratio < 0.05 indicate a deficiency of K+. Consequently, potassium could constitute with phosphorus (<5 mg.kg-1) the main factors limiting the productivity of these soils. The sustainable use of these soils requires a judicious choice of crop types and an organo-mineral fertilization method to compensate for the deficiencies. Keywords: Clay, cations, potassium-magnesium antagonism, soil fertility, dolostones.

Diabetes ◽  
2018 ◽  
Vol 67 (Supplement 1) ◽  
pp. 1612-P
Author(s):  
NADIRA SULTANA KAKOLY ◽  
ARUL EARNEST ◽  
HELENA TEEDE ◽  
LISA MORAN ◽  
DEBORAH LOXTON ◽  
...  

Author(s):  
Larisa Dmitrievna Popovich ◽  
Svetlana Valentinovna Svetlichnaya ◽  
Aleksandr Alekseevich Moiseev

Diabetes – a disease in which the effect of the treatment substantially depends on the patient. Known a study showed that the use of glucometers with the technology of three-color display of test results facilitates self-monitoring of blood sugar and leads to a decrease in glycated hemoglobin (HbAlc). Purpose of the study: to modeling the impact of using of a glucometer with a color-coded display on the clinical outcomes of diabetes mellitus and calculating, the potential economic benefits of reducing the hospitalization rate of patients with diabetes. Material and methods. Based on data from two studies (O. Schnell et al. and M. Baxter et al.) simulation of the reduction in the number of complications with the use of a glucometer with a color indication. In a study by O. Schnell et al. a decrease of HbA1c by 0.69 percent is shown when using the considered type of glucometers, which was the basis of the model. Results. In the model, the use of a glucometer with a color-coded display for type 1 diabetes led to a decrease in the total number of complications by 9.2 thousand over 5 years per a cohort of 40 thousand patients with different initial levels of HbA1c. In a cohort of 40 thousand patients with type 2 diabetes, the simulated number of prevented complications was 1.7 thousand over 5 years. When extrapolating these data to all patients with diabetes included in the federal register of diabetes mellitus (FRD), the number of prevented complications was 55.4 thousand cases for type 1 diabetes and 67.1 thousand cases for type 2 diabetes. The possible economic effect from the use of the device by all patients with a diagnosis of diabetes, which are included in the FRD, estimated at 1.5 billion rubles for a cohort of patients with type 1 diabetes and 5.3 billion rubles for patients with type 2 diabetes. Conclusion. Improving the effectiveness of self-monitoring, which is the result of the use of glucometers with color indicators, can potentially significantly reduce the incidence of complications in diabetes and thereby provide significant economic benefits to society.


2011 ◽  
Vol 7 (3) ◽  
pp. 185-189 ◽  
Author(s):  
Richdeep S. Gill ◽  
Arya M. Sharma ◽  
David P. Al-Adra ◽  
Daniel W. Birch ◽  
Shahzeer Karmali

2019 ◽  
Vol 15 (3) ◽  
pp. 172-173 ◽  
Author(s):  
Valdemar Grill ◽  
Bjørn O. Åsvold

Latent Autoimmune Diabetes in the Adult, LADA has been investigated less than “classical” type 1 and type 2 diabetes and the criteria for and the relevance of a LADA diagnosis has been challenged. Despite the absence of a genetic background that is exclusive to LADA, this form of diabetes displays phenotypic characteristics that distinguish it from other forms of diabetes. LADA is heterogeneous in terms of the impact of autoimmunity and lifestyle factors, something that poses problems as to therapy and follow-up perhaps particularly in those with marginal positivity. Yet, there appears to be clear clinical utility in classifying individuals as LADA.


Author(s):  
Lenin Pazmino ◽  
Wilmer Esparza ◽  
Arian Ramón Aladro-Gonzalvo ◽  
Edgar León

More minutes of physical activity (PA) accumulated during a day are associated with a lower risk of diabetes mellitus type 2. However, it is less known if distinct dimensions of PA can produce a different protective effect in the prevention of prediabetes. The aim of this study was to analyze the impact of work and recreational PA on prediabetes among U.S. adults during the period 2015–2016 using the National Health and Nutrition Examination Survey (NHANES) database. Individuals (n = 4481) with hemoglobin A1c (HbA1c) test values of 5.7% to 6.4% were included. A logistic regression multivariate-adjusted analysis was conducted to estimate the association between the odds ratios (ORs) and 95% confidence intervals (CIs) of prediabetes, with work and recreational PA. The prevalence of prediabetes among U.S. adults was lower in physically active individuals both at work (~24%) and recreational (~21%) physical activities compared to individuals who were not physically active (27 to 30%). Individuals lacking practice of recreational PA had a high risk of prediabetes (OR = 1.26, 95% CI: 1.080 to 1.466). PA may be a protective factor for prediabetes conditions depending on gender, age, ethnic group, waist circumference, and thyroid disease.


2021 ◽  
Vol 9 (1) ◽  
pp. e001413
Author(s):  
Jonathan Yap ◽  
Kamalesh Anbalakan ◽  
Wan Ting Tay ◽  
Daniel Ting ◽  
Carol Yim Cheung ◽  
...  

IntroductionDiabetes mellitus is a growing public health epidemic in Asia. We examined the impact of type 2 diabetes, glycemic control and microvascular complications on mortality and cardiovascular outcomes in a multiethnic population-based cohort of Asians without prior cardiovascular disease.Research design and methodsThis was a prospective population-based cohort study in Singapore comprising participants from the three major Asian ethnic groups: Chinese, Malays and Indians, with baseline examination in 2004–2011. Participants with type 1 diabetes and those with cardiovascular disease at baseline were excluded. Type 2 diabetes, Hemoglobin A1c (HbA1c) levels and presence of microvascular complications (diabetic retinopathy and nephropathy) were defined at baseline. The primary outcome was all-cause mortality and major adverse cardiovascular events (MACEs), defined as a composite of cardiovascular mortality, myocardial infarction, stroke and revascularization, collected using a national registry.ResultsA total of 8541 subjects were included, of which 1890 had type 2 diabetes at baseline. Subjects were followed for a median of 6.4 (IQR 4.8–8.8) years. Diabetes was a significant predictor of mortality (adjusted HR 1.74, 95% CI 1.45 to 2.08, p<0.001) and MACE (adjusted HR 1.64, 95% CI 1.39 to 1.93, p<0.001). In those with diabetes, higher HbA1c levels were associated with increased MACE rates (adjusted HR (per 1% increase) 1.18, 95% CI 1.11 to 1.26, p<0.001) but not mortality (p=0.115). Subjects with two microvascular complications had significantly higher mortality and MACE compared with those with only either microvascular complication (adjusted p<0.05) and no microvascular complication (adjusted p<0.05).ConclusionDiabetes is a significant predictor of mortality and cardiovascular morbidity in Asian patients without prior cardiovascular disease. Among patients with type 2 diabetes, poorer glycemic control was associated with increased MACE but not mortality rates. Greater burden of microvascular complications identified a subset of patients with poorer outcomes.


2021 ◽  
pp. 1-24
Author(s):  
Julian Xie ◽  
Ashley Price ◽  
Neal Curran ◽  
Truls Østbye

Abstract Objective: To evaluate a Produce Prescription Programme’s utilisation, and its effects on healthy food purchasing and diabetes control among participants with type 2 diabetes. Design: Prospective cohort study using participants’ electronic health records (EHR) and food transaction data. Participants were categorized as “Frequent Spenders” and “Sometimes Spenders” based on utilisation frequency. Multivariate regressions assessed utilisation predictors; and programme effects on fruit/vegetable purchasing (spending, expenditure share, variety) and on diabetes-related outcomes (HbA1c, BMI, blood pressure). Setting: Patients enrolled by clinics in Durham, North Carolina, USA. Participants received $40 monthly for fruits and vegetables at a grocery store chain. Subjects: 699 food-insecure participants (353 with diabetes). Results: Being female and older was associated with higher programme utilisation; hospitalisations were negatively associated with programme utilisation. Frequent Spender status was associated with $8.77 more in fruit/vegetable spending (p < 0.001), 3.3% increase in expenditure share (p = 0.007), and variety increase of 2.52 fruits and vegetables (p < 0.001). For $10 of Produce Prescription Dollars spent, there was an $8.00 increase in fruit/vegetable spending (p < 0.001), 4.1% increase in expenditure share, and variety increase of 2.3 fruits/vegetables (p < 0.001). For the 353 participants with diabetes, there were no statistically significant relationships between programme utilisation and diabetes control. Conclusions: Programme utilisation was associated with healthier food purchasing, but the relatively short study period and modest intervention prevent making conclusions about health outcomes. Produce Prescription Programmes can increase healthy food purchasing among food-insecure people, which may improve chronic disease care.


2020 ◽  
Author(s):  
Björg Ásbjörnsdóttir ◽  
Marianne Vestgaard ◽  
Nicoline C. Do ◽  
Lene Ringholm ◽  
Lise L.T. Andersen ◽  
...  

Diabetologia ◽  
2021 ◽  
Author(s):  
David Z. I. Cherney ◽  
◽  
Bernard Charbonnel ◽  
Francesco Cosentino ◽  
Samuel Dagogo-Jack ◽  
...  

Abstract Aims/hypothesis In previous work, we reported the HR for the risk (95% CI) of the secondary kidney composite endpoint (time to first event of doubling of serum creatinine from baseline, renal dialysis/transplant or renal death) with ertugliflozin compared with placebo as 0.81 (0.63, 1.04). The effect of ertugliflozin on exploratory kidney-related outcomes was evaluated using data from the eValuation of ERTugliflozin effIcacy and Safety CardioVascular outcomes (VERTIS CV) trial (NCT01986881). Methods Individuals with type 2 diabetes mellitus and established atherosclerotic CVD were randomised to receive ertugliflozin 5 mg or 15 mg (observations from both doses were pooled), or matching placebo, added on to existing treatment. The kidney composite outcome in VERTIS CV (reported previously) was time to first event of doubling of serum creatinine from baseline, renal dialysis/transplant or renal death. The pre-specified exploratory composite outcome replaced doubling of serum creatinine with sustained 40% decrease from baseline in eGFR. In addition, the impact of ertugliflozin on urinary albumin/creatinine ratio (UACR) and eGFR over time was assessed. Results A total of 8246 individuals were randomised and followed for a mean of 3.5 years. The exploratory kidney composite outcome of sustained 40% reduction from baseline in eGFR, chronic kidney dialysis/transplant or renal death occurred at a lower event rate (events per 1000 person-years) in the ertugliflozin group than with the placebo group (6.0 vs 9.0); the HR (95% CI) was 0.66 (0.50, 0.88). At 60 months, in the ertugliflozin group, placebo-corrected changes from baseline (95% CIs) in UACR and eGFR were −16.2% (−23.9, −7.6) and 2.6 ml min−1 [1.73 m]−2 (1.5, 3.6), respectively. Ertugliflozin was associated with a consistent decrease in UACR and attenuation of eGFR decline across subgroups, with a suggested larger effect observed in the macroalbuminuria and Kidney Disease: Improving Global Outcomes in Chronic Kidney Disease (KDIGO CKD) high/very high-risk subgroups. Conclusions/interpretation Among individuals with type 2 diabetes and atherosclerotic CVD, ertugliflozin reduced the risk for the pre-specified exploratory composite renal endpoint and was associated with preservation of eGFR and reduced UACR. Trial registration ClinicalTrials.gov NCT01986881 Graphical abstract


Sign in / Sign up

Export Citation Format

Share Document