Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 765
Filter
1.
Int. j. morphol ; 42(2): 530-537, abr. 2024. ilus, tab
Article in English | LILACS | ID: biblio-1558130

ABSTRACT

SUMMARY: Even though morphometric and mineral studies related to the guinea pig (Cavia porcellus) skull have been carried out, this study is the first attempt to evaluate all developmental stages of male and female guinea pigs. This study aims to this study is to create 3D modeling of CT images obtained from the skulls of male and female guinea pigs during the developmental period (prepuberty and the period between puberty and adulthood) and following periods (young adulthood and old adulthood), to analyze some biometric bone data such as volume, surface area and length, and to assess the developmental analysis of the mineral matter change in their skulls. The CT-scanned skulls were transferred to 3D Slicer (5.0.2), which is used for 3D modeling. The surface area and volume were calculated by measuring the measurement points on the models. In addition, the XRF device was used to show elemental ratio changes during different developmental stages. According to metric measurements, a gradual increase was observed during the life period. The metric measurements of the skull bone had a higher measurement value in male guinea pigs than in their female counterparts. While Ca/P ratio increased up to the third group and partially decreased in the fourth group in males, it gradually increased from the first group to the fourth group in females. This study revealed that puberty, adulthood and sex were effective in the physical and chemical characterization of skull bone structure in guinea pigs.


Aunque se han realizado estudios morfométricos y de minerales relacionados con el cráneo del cobayo (Cavia porcellus), esta investigación es el primer intento de evaluar las etapas de desarrollo de cobayos machos y hembras. El objetivo de este estudio fue crear un modelado 3D de imágenes de tomografía computarizada obtenidas de los cráneos de cobayos machos y hembras durante el período de desarrollo (prepubertad y el período entre la pubertad y la edad adulta) y los períodos siguientes (edad adulta joven y edad adulta mayor), para analizar algunos datos biométricos de los huesos, como el volumen, la superficie y la longitud, y además, analizar el cambio de materia mineral en sus cráneos durante el desarrollo. Los cráneos escaneados se transfirieron a 3D Slicer (5.0.2), que se utiliza para el modelado 3D. El área de superficie y el volumen se calcularon midiendo los puntos de medición en los modelos. Además, se utilizó el dispositivo XRF para mostrar los cambios en las proporciones elementales durante diferentes etapas de desarrollo. Según mediciones métricas, se observó un aumento gradual durante el período de vida. Las medidas métricas del hueso del cráneo tuvieron un valor de medición más alto en los cobayos machos que en las hembras. Mientras que la relación Ca/P aumentó hasta el tercer grupo y disminuyó parcialmente en el cuarto grupo en los machos y aumentó gradualmente del primer grupo al cuarto grupo en las hembras. Este estudio reveló que la pubertad, la edad adulta y el sexo fueron efectivos en la caracterización física y química de la estructura ósea del cráneo en cobayos.


Subject(s)
Animals , Male , Female , Guinea Pigs , Skull/chemistry , Skull/diagnostic imaging , Tomography, X-Ray Computed , Imaging, Three-Dimensional , Skull/anatomy & histology , Spectrometry, X-Ray Emission , Minerals/analysis
2.
Diaeta (B. Aires) ; 41: 48-64, ago. 2023. graf
Article in Spanish | LILACS, UNISALUD, BINACIS | ID: biblio-1528522

ABSTRACT

Resumen Introducción: recientemente, se ha evidenciado gran desarrollo de variados productos destinados a la población vegetariana/vegana. Sin embargo, su valor nutricional no ha sido estudiado en profundidad. El objetivo del presente estudio fue evaluar aporte potencial (AP) y porcentaje de cobertura de requerimientos diarios (%RD) de hierro, calcio y zinc de alimentos dirigidos a poblaciones adolescente y adulta vegetariana/vegana. Materiales y método: se analizaron cinco medallones (4 comerciales, 1 casero) y once bebidas (9 comerciales, 4 de ellas c/jugo frutal y 2 caseras) elaborados con materias primas vegetales. Se estableció el AP de Fe, Ca y Zn en los productos considerando su contenido y dializabilidad porcentual (D%). Se calculó, para una porción de alimento, el porcentaje de cobertura del requerimiento diario de estos minerales. Resultados: el contenido de los minerales en los medallones fue: [Fe] 1,64-4,21 mg%; [Ca] 104-213 mg% y [Zn] 0,53-3,57 mg%; en las bebidas se observó: [Fe] 0,24-2,39 mg%; [Ca] 71-214 mg% y [Zn] 0,18-0,79 mg%. La D% en medallones fue: Fe 7,3-11,9; Ca 10,2-18,2 y Zn 17,0-21,4 y para las bebidas, Fe 5,2-32,8; Ca 6,4-35,7 y Zn 5,9-33,9. El %RD para adolescentes, considerando una porción de medallones fue: Fe mujeres 3,0-9,0%; hombres 5,0-16%; Ca 0,7-6,8% y Zn 1,5-3,9% y para adultos fue: Fe mujeres 3,0-10%; hombres 7,0-20%; Ca 0,6-5,8% y Zn 2,0-5,1%. Al considerar las bebidas, el %RD para adolescentes fue: Fe mujeres 2,0-28%; hombres 4,0-53%; Ca 0,4-22% y Zn 1,3-9,5%. Para adultos fue: Fe mujeres 2,0-31%; hombres 5,0-64%; Ca 0,3-19% y Zn 1,8-12%. Conclusiones: en los medallones se observó bajo %RD para los minerales estudiados. Las bebidas con agregado de jugos de naranja o manzana aportaron cantidades significativas de hierro. El %RD para zinc y calcio de los dieciséis alimentos fue bajo (ambos grupos estudiados). Consecuentemente, para cubrir los requerimientos de estos minerales habría que combinar adecuadamente los alimentos que se consumen.


Abstract Introduction: recently, there has been great development of various products aimed at the vegetarian/vegan population. However, its nutritional value has not been studied in depth. The objective of this study was to evaluate potential intake (PI) and percentage of coverage of daily requirements (% RD) of iron, calcium and zinc from foods aimed at adolescent and adult vegetarian/vegan populations Materials and method: five medallions (4 commercial, 1 homemade) and eleven beverages (9 commercial, 4 of them with fruit juice and 2 homemade) made with vegetable raw materials were analyzed. The PI of Fe, Ca and Zn was established in the products considering their content and percentage dialyzability (D%). It was calculated, for a portion of food, the percentage of coverage of the daily requirement of these minerals. Results: the mineral content in the medallions was: [Fe] 1.64-4.21 mg%; [Ca] 104-213 mg% and [Zn] 0.53-3.57 mg%; in beverages it was observed: [Fe] 0.24-2.39 mg%; [Ca] 71-214 mg% and [Zn] 0.18-0.79 mg%. The D% in medallions was: Fe 7,3-11,9; Ca 10.2-18.2 and Zn 17.0-21.4 and for beverages, Fe 5.2-32.8; Ca 6.4-35.7 and Zn 5.9-33.9. The %RD for adolescents, considering a portion of medallions was: Fe women 3.0-9.0%; men 5.0-16%; Ca 0.7-6.8% and Zn 1.5-3.9% and for adults it was: Fe women 3.0-10%; men 7.0-20%; Ca 0.6-5.8% and Zn 2.0-5.1%. When considering beverages, the %RD for adolescents was: Fe women 2.0-28%; men 4.0-53%; Ca 0.4-22% and Zn 1.3-9.5%. For adults it was: Fe women 2.0-31%; men 5.0-64%; Ca 0.3-19% and Zn 1.8-12%. Conclusions: in the medallions, low % RD was observed for the minerals studied. Drinks with added orange or apple juices provided significant amounts of iron. The %RD for zinc and calcium of the sixteen foods was low (both groups studied). Consequently, to meet the requirements of these minerals, it would be necessary to properly combine the foods consumed.


Subject(s)
Food, Organic , Vegetarians , Minerals
3.
Zhongguo Zhong Yao Za Zhi ; (24): 625-635, 2023.
Article in Chinese | WPRIM | ID: wpr-970531

ABSTRACT

This study explored the feasibility of mineral element content and ratios of nitrogen isotopes to discriminate the cultivation mode of Dendrobium nobile in order to provide theoretical support for the discrimination of the cultivation mode of D. nobile. The content of 11 mineral elements(N, K, Ca, P, Mg, Na, Fe, Cu, Zn, Mn, and B) and nitrogen isotope ratios in D. nobile and its substrate samples in three cultivation methods(greenhouse cultivation, tree-attached cultivation, and stone-attached cultivation) were determined. According to the analysis of variance, principal component analysis, and stepwise discriminant analysis, the samples of different cultivation types were classified. The results showed that the nitrogen isotope ratios and the content of elements except for Zn were significantly different among different cultivation types of D. nobile(P<0.05). The results of correlation analysis showed that the nitrogen isotope ratios, mineral element content, and effective component content in D. nobile were correlated with the nitrogen isotope ratio and mineral element content in the corresponding substrate samples to varying degrees. Principal component analysis can preliminarily classify the samples of D. nobile, but some samples overlapped. Through stepwise discriminant analysis, six indicators, including δ~(15)N, K, Cu, P, Na, and Ca, were screened out, which could be used to establish the discriminant model of D. nobile cultivation methods, and the overall correct discrimination rates after back-substitution test, cross-check, and external validation were all 100%. Therefore, nitrogen isotope ratios and mineral element fingerprints combined with multivariate statistical analysis could effectively discriminate the cultivation types of D. nobile. The results of this study provide a new method for the identification of the cultivation type and production area of D. nobile and an experimental basis for the quality evaluation and quality control of D. nobile.


Subject(s)
Dendrobium , Minerals , Discriminant Analysis , Multivariate Analysis , Nitrogen Isotopes
4.
Article in Chinese | WPRIM | ID: wpr-970759

ABSTRACT

The existing dentin bonding systems based on acid-etching technique lead to the loss of both extrafibrillar and intrafibrillar minerals from dentin collagen, causing excessive demineralization. Because resin monomers can not infiltrate the intrafibrillar spaces of demineralized collagen matrix, degradation of exposed collagen and resin hydrolysis subsequently occur within the hybrid layer, which seriously jeopardizing the longevity of resin-dentin bonding. Collagen extrafibrillar demineralization can effectively avoid the structural defects within the resin-dentin interface caused by acid-etching technique and improve the durability of resin-dentin bonding, by preserving intrafibrillar minerals and selectively demineralizing extrafibrillar dentin. The mechanism and research progress of collagen extrafibrillar demineralization in dentin bonding are reviewed in the paper.


Subject(s)
Humans , Collagen , Dental Bonding , Dentin/chemistry , Dentin-Bonding Agents/chemistry , Materials Testing , Minerals , Resin Cements/chemistry , Tooth Demineralization
5.
Beijing Da Xue Xue Bao ; (6): 82-87, 2023.
Article in Chinese | WPRIM | ID: wpr-971277

ABSTRACT

OBJECTIVE@#To investigate the effects of novel bioactive glasses (BG) including PSC with high phosphorus component and FBG with fluorine-doped element on promoting remineralization of artificial dentin caries.@*METHODS@#(1) BGs were used in this study as follows: PSC (10.8%P2O5-54.2%SiO2-35.0%CaO, mol.%) were synthesized using phytic acid as the phosphorus precursor through sol-gel method. FBG (6.1%P2O5-37.0%SiO2-53.9%CaO-3.0%CaF2, mol.%) and 45S5(6.0%P2O5-45.0%SiO2-24.5%CaO-24.5%Na2O, mol.%) were synthesized by traditional melt method. (2) The above BGs were soaked in simulated body fluid (SBF) for 24 hours. Then X-ray diffraction (XRD) was used to analyze the formation of hydroxyapatite (HA) crystals. (3) Prepared 1 mm thick dentin slices were soaked in 17% ethylene diamine tetraacetic acid (EDTA) for 1 week to demineralize the dentin. Then the dentin slices treated by BG were soaked in SBF for 1 week. Field emission scanning electron micro-scopy (FE-SEM) was used to observe the surface morphology of the dentin slices. (4) Four cavities were prepared to 1 mm depth in each 2 mm thick dentin slice, then were treated with lactic acid for 2 weeks to form the artificial dentin caries. Wax, mineral trioxide aggregate (MTA), PSC and FBG were used to fill four cavities as blank control group, MTA group, PSC group and FBG group respectively. Then the spe-cimens were soaked in SBF for 4 weeks. The changes of depth and density of demineralized dentin were analyzed using Micro-CT before filling and after 2 and 4 weeks filling.@*RESULTS@#(1) PSC and FBG promoted mineral formation on the surfaces of the demineralized dentin. And the speed was faster and crystallinity was higher in PSC group than the FBG and 45S5 groups. (2) The increased mineral density of artificial dentin caries in PSC group were (185.98 ± 55.66) mg/cm3 and (213.64 ± 36.01) mg/cm3 2 and 4 weeks after filling respectively, which were significantly higher than the control group [(20.38 ± 7.55) mg/cm3, P=0.006; (36.46 ± 10.79) mg/cm3, P=0.001]. At meanwhile, PSC group was also higher than MTA group [(57.29 ± 10.09) mg/cm3; (111.02 ± 22.06) mg/cm3], and it had statistical difference (P=0.015; P=0.006). The depth of remineralized dentin in PSC group were (40.0 ± 16.9) μm and (54.5 ± 17.8) μm 2 and 4 weeks respectively, which were also statistically different from the control group (P =0.010;P=0.001). There were no statistical differences between the control group and MTA group. The above effects of FBG group were between PSC and MTA.@*CONCLUSION@#PSC has advantages in the speed, quality and depth of mineral deposition in the demineralized layer of artificial dentin caries. It would be expected to be an ideal material to promote the remineralization of dentin caries.


Subject(s)
Dentin , Silicon Dioxide/pharmacology , Dental Caries Susceptibility , Minerals/pharmacology , Phosphorus/pharmacology , Tooth Remineralization/methods
7.
Pesqui. bras. odontopediatria clín. integr ; 23: e220105, 2023. tab, graf
Article in English | LILACS, BBO | ID: biblio-1521288

ABSTRACT

ABSTRACT Objective: To evaluate the mineral density of enamel and dentin tissues of healthy individuals using threedimensional cone-beam computed tomography. Material and Methods: CBCT images of 15 healthy individuals, previously obtained for various reasons, were used in this study. In HU measurements, mineral density measurements were made from three different regions of enamel and three different regions of dentin, and the values obtained were compared. Enamel and dentin mineralization density measurements were measured from six regions, namely the crown cutting edge, buccal middle and cervical region for enamel, and the crown cutting edge, cervical region and root apex for dentin. In the comparisons of groups, the parametric One-Way ANOVA variance analysis method was applied. In the paired comparisons between the groups, the Tukey HSD test was applied as the multiple comparison post hoc test. A value of p<0.05 was accepted as statistically significant. Results: Mineralization density of tooth enamel and dentin tissues was quantitatively different in the maxilla and mandible in anterior and posterior teeth. Conclusion: In all the teeth, there were statistically significant decreases in the mineral density values of enamel and dentin tissue from occlusal towards the cemento-enamel junction. Statistically significant decreases were observed in the mineral density values of enamel and dentin tissue from the anterior region towards the posterior region in the teeth in both the upper and lower jaws.


Subject(s)
Diagnostic Imaging , Dentin-Bonding Agents , Dental Enamel , Minerals , Analysis of Variance
8.
Arch. latinoam. nutr ; Arch. latinoam. nutr;72(3): 185-195, sept. 2022. tab
Article in English | LILACS, LIVECS | ID: biblio-1399261

ABSTRACT

Introduction: Rice is a staple food in Costa Rica representing almost 24 % of the total calorie intake in the diet. Consumers have become more quality conscious about the rice consumed, so producers need to focus on the quality of rice along with production. Objective: The aim of this study was to investigate the physicochemical profile and consumer preference of five Costa Rican rice varieties: Palmar 18, Basmatico, Chin Chin, INTA-Miravalles, and CR- 5272. Materials and methods: Proximate analysis, amylose, and mineral content were performed in the raw grain. Two different sessions were performed (n=120 each) to evaluate consumer preference measurements using the John Brown R-Index (RJB) index. The first sensory panel selected the best cooking preparation and the second, the preferred rice variety. Instrumental color measurements (L*, C*, hº, DE) were applied to the cooked rice varieties (76-96ºC for 38 min). Results: Regarding the physicochemical characterization, INTAMiravalles showed the highest protein content (8.2%), while Basmatico and Chin Chin, the lowest. Four varieties presented high amylose content (AC) and INTA-Miravalles reported an intermediate AC. The mineral content varied among varieties. INTA-Miravalles showed the highest N, followed by Palmar 18. The cooking preparation from the regulatory agency was preferred by consumers. The consumers' preference of the varieties ranked from high to low: Basmatico>Chin Chin=CR5772>Palmar 18=INTA-Miravalles. Conclusions: This study suggests that consumer preference for cooked rice was influenced by physicochemical characteristics such as protein, AC, mineral content, and aromatic attributes. Consumer acceptance is an important factor to consider when new varieties are developed. The water-to-rice ratio during cooking played an important role in cooked rice sensory quality(AU)


Introducción: el arroz es un alimento básico de consumo en Costa Rica que representa casi el 24% de la ingesta total de calorías en la dieta. Los consumidores se han vuelto más conscientes de la calidad del arroz que consumen, por lo que los productores deben enfocar esfuerzos en la calidad y producción del arroz. Objetivo: El objetivo de este estudio fue investigar el perfil fisicoquímico y la preferencia del consumidor de cinco variedades de arroz de Costa Rica: Palmar 18, Basmatico, Chin Chin, INTA-Miravalles y CR-5272. Materiales y métodos: Se realizó el análisis proximal, contenido de amilosa (CA) y de minerales en el grano crudo y color instrumental en el arroz cocido. Se realizaron dos mediciones de preferencia de los consumidores (n=120) utilizando el índice R de James Brown (RJB). En la primera se seleccionó el mejor método de preparación y en la segunda, la variedad de arroz preferido. El color instrumental (L*, C*, hº, DE) se midió a las variedades de arroz cocinado (76-96ºC por 38 min). Resultados: Miravalles mostró el mayor contenido en proteínas (8,2%), mientras que Basmatico y Chin Chin, el menor. Cuatro variedades presentaron un alto CA y el INTAMiravalles reportó un CA intermedio. El contenido mineral varió entre las variedades. INTA-Miravalles mostró el mayor contenido de nitrógeno, seguido de Palmar 18. El método de cocción del ente regulador fue el preferido por los consumidores. La preferencia de los consumidores por las variedades de mayor a menor fue: Basmatico > Chin Chin = CR5772 > Palmar 18 = INTA-Miravalles. Conclusiones: La preferencia de los consumidores por el arroz cocido se vio influenciada por características fisicoquímicas como proteína, CA, minerales y atributos aromáticos. La aceptación de los consumidores es un factor importante cuando se desarrollan nuevas variedades. La relación agua/ arroz durante la cocción desempeñó un papel importante en la calidad del arroz cocido(AU)


Subject(s)
Humans , Adolescent , Adult , Middle Aged , Aged , Young Adult , Oryza/chemistry , Consumer Behavior , Eating , Smell , Color , Costa Rica , Food Handling , Amylose/analysis , Minerals/analysis
9.
Rev. Soc. Argent. Diabetes ; 56(2): 63-80, mayo - ago. 2022. ilus
Article in Spanish | LILACS, BINACIS | ID: biblio-1395868

ABSTRACT

En el paciente con diabetes mellitus (DM) y enfermedad renal crónica (ERC), las alteraciones electrolíticas y metabólicas constituyen un verdadero desafío. En noviembre de 2021, el Comité de Nefropatía de la Sociedad Argentina de Diabetes realizó una jornada científica con el objetivo de actualizar las alteraciones hidroelectrolíticas y del metabolismo óseo mineral, y las consideraciones dietarias en ERC y DM.


In patients with diabetes mellitus (DM) and chronic kidney disease (CKD), electrolyte and metabolic alterations constitute a real challenge. In November 2021, the Nephropathy Committee of the Argentine Diabetes Society held a scientific conference with the aim of updating hydroelectrolytic and mineral bone metabolism disorders, and dietary considerations in CKD and DM.


Subject(s)
Diabetes Mellitus , Electrolytes , Renal Insufficiency, Chronic , Kidney Diseases , Minerals
10.
Rev. méd. Chile ; 150(5): 597-602, mayo 2022. tab, graf
Article in Spanish | LILACS | ID: biblio-1409855

ABSTRACT

BACKGROUND: A secondary cause can be found in up to one third of women with osteoporosis, potentially modifying their therapeutic approach. AIM: To determine the prevalence of secondary causes and risk factors for decreased bone mineral density (BMD) and osteoporosis. Material and Methods: We included postmenopausal women with a diagnosis of osteoporosis or low BMD who consulted for the first time in an endocrinology clinic between October 2018 and March 2020. A complete medical history, physical examination and a standardized laboratory assessment to identify secondary causes were performed. RESULTS: During the study period, 114 women were evaluated, 30 of them with low BMD and 84 with osteoporosis. After obtaining a medical history and a structured laboratory screening, at least one secondary cause was found in 50% of patients with osteoporosis and in 67% of those with low BMD. Most patients with no identified secondary cause had at least one risk factor for fragility fractures. Conclusions: A structured evaluation that includes medical history and standardized laboratory study in postmenopausal women with osteoporosis or low BMD, is a valuable tool to identify secondary causes of osteoporosis.


Subject(s)
Humans , Male , Osteoporosis/etiology , Osteoporosis/epidemiology , Fractures, Bone/complications , Fractures, Bone/epidemiology , Bone Density , Postmenopause , Minerals
11.
Rev. med. vet. zoot ; 69(1): 63-74, ene.-abr. 2022. tab, graf
Article in English | LILACS, COLNAL | ID: biblio-1389168

ABSTRACT

ABSTRACT In this study we evaluated the inclusion of chemical silage from red tilapia viscera (Oreochromis sp.) in diets for ISA Brown line laying hens (Gallus gallus domesticus) and its influence on nutritional parameters and egg quality. A total of 56 16-week-old laying hens were randomly divided into two groups (one per diet), which in turn were subdivided into 7 groups, each with 4 birds. Eggs were collected during the first 13 weeks of laying. During this period the egg quality parameters were evaluated until week 11; the bromatological characterization of the egg was carried out in the 2nd and 4th week of laying. The results indicated that the inclusion of chemical silage in 17,18% dry matter does not result in statistically significant differences in egg quality parameters or in their bromatological composition, with respect to the control. This led to the conclusion that chemical silage can be used as an alternative to protein inputs such as fish meal and soybean cake in the diet of laying hens, without modifying the quality of the final product.


RESUMEN En este trabajo se evaluó la inclusion de ensilado químico de vísceras de tilapia roja (Oreochromis sp.) en dietas para gallinas ponedoras (Gallus gallus domesticus) de la raza Isa-Brown, y su influencia sobre parámetros nutricionales y la calidad del huevo. Se utilizó un total de 56 gallinas ponedoras de 16 semanas de edad divididas al azar en dos grupos (uno por dieta), los cuales a su vez se subdividieron en 7 grupos de 4 aves cada uno. Se les recolectó huevos durante las primeras 13 semanas de postura. Durante este periodo se realizó la evaluación de los parámetros de calidad del huevo hasta la semana 11. La caracterización bromatológica del huevo se realizo en las semanas 2 y 4, luego de haber sido puestos. Los resultados indicaron que la inclusion de ensilado químico en un 17,18% materia seca, no genera diferencias estadísticamente significativas (p < 0,05) en los parámetros de calidad del huevo ni en su composición bromatológica, con respecto al control. Esto permitió concluir que el ensilado químico puede ser usado como alternativa a insumos proteicos como harina de pescado y torta de soya en la alimentación de gallinas ponedoras, sin modificar la calidad del producto final.


Subject(s)
Animals , Silage , Chickens , Tilapia , Eggs , Food Analysis , Fish Proteins, Dietary , Birds , Viscera , Microbiological Techniques , Minerals
12.
Biosci. j. (Online) ; 38: e38016, Jan.-Dec. 2022. tab, graf
Article in English | LILACS | ID: biblio-1391692

ABSTRACT

Potato is a plant that has high nutrient demand during its cycle. Given the concern with the environment, due to the large amount of synthetic mineral fertilizer used in the crops, the objective of this work was to evaluate the efficiency of organomineral fertilizers in the cultivation of potato, cultivar Ágata, under cerrado conditions. The experimental design was in subdivided plots, consisted of four doses of organomineral fertilizer, corresponding to 40, 60, 80, 100 and 120% of the mineral fertilizer dose in the organomineral source (2800 kg ha-1 of formulated 3-32-6) and the subplots consisted of four collection seasons (61, 74, 89 and 110 days after planting) and four repetitions. Organomineral fertilizer with 40% of the recommended dose for potato cultivation provides higher yield of tubers in the Especial potato class and higher accumulation of total dry mass, in addition to providing satisfactory productivity for the tubers of higher commercial value. The use of organomineral fertilizers promotes the same behavior as mineral fertilizers, not interfering with potato development.


Subject(s)
Solanum tuberosum , Nutrients , Organic Matter , Fertilizers , Minerals
13.
Chinese Journal of Stomatology ; (12): 307-313, 2022.
Article in Chinese | WPRIM | ID: wpr-935868

ABSTRACT

Dental enamel biomimetic mineralization is a process to form the enamel-like mineral structures, which possess unique microstructure and exceptional physic-chemical properties, by mimicking the mechanism of natural enamel formation and biomineralization. Varieties of techniques such as molecular mimetic synthesis and molecular self-assembling were used to accomplish the microenvironment and molecular conditions similar to that of natural tooth enamel within human body. Early remineralization and biomineralization is the future of restoration for enamel defect, research on such products have huge potential in clinical applications, with speedy advancement in recent two decades. This review summarizes the major advances in researches on enamel biomimetic mineralization in recent years.


Subject(s)
Humans , Biomimetics , Dental Enamel , Minerals
14.
Chin. j. integr. med ; Chin. j. integr. med;(12): 531-537, 2022.
Article in English | WPRIM | ID: wpr-928963

ABSTRACT

OBJECTIVE@#To evaluate the effect of Shilajit, a medicine of Ayurveda, on the serum changes in cytokines and adipokines caused by non-alcoholic fatty liver disease (NAFLD).@*METHODS@#After establishing fatty liver models by feeding a high-fat diet (HFD) for 12 weeks, 35 Wistar male rats were randomly divided into 5 groups, including control (standard diet), Veh (HFD + vehicle), high-dose Shilajit [H-Sh, HFD + 250 mg/(kg·d) Shilajit], low-dose Shilajit [L-Sh, HFD + 150 mg/(kg·d) Shilajit], and pioglitazone [HFD + 10 mg/(kg·d) pioglitazone] groups, 7 rats in each group. After 2-week of gavage administration, serum levels of glucose, insulin, interleukin 1beta (IL-1β), IL-6, IL-10, tumor necrosis factor-alpha (TNF-α), adiponectin, and resistin were measured, and insulin resistance index (HOMA-IR) was calculated.@*RESULTS@#After NAFLD induction, the serum level of IL-10 significantly increased and serum IL-1β, TNF-α levels significantly decreased by injection of both doses of Shilajit and pioglitazone (P<0.05). Increases in serum glucose level and homeostasis model of HOMA-IR were reduced by L-Sh and H-Sh treatment in NAFLD rats (P<0.05). Both doses of Shilajit increased adiponectin and decreased serum resistin levels (P<0.05).@*CONCLUSION@#The probable protective role of Shilajit in NAFLD model rats may be via modulating the serum levels of IL-1β, TNF-α, IL-10, adipokine and resistin, and reducing of HOMA-IR.


Subject(s)
Animals , Male , Rats , Adiponectin , Cytokines , Diet, High-Fat , Glucose , Insulin Resistance , Interleukin-10 , Liver , Minerals , Non-alcoholic Fatty Liver Disease/pathology , Pioglitazone/therapeutic use , Rats, Wistar , Resins, Plant , Resistin/therapeutic use , Tumor Necrosis Factor-alpha
15.
Article in English | WPRIM | ID: wpr-929134

ABSTRACT

Inflammation-associated proteinase functions are key determinants of inflammatory stromal tissues deconstruction. As a specialized inflammatory pathological process, dental internal resorption (IR) includes both soft and hard tissues deconstruction within the dentin-pulp complex, which has been one of the main reasons for inflammatory tooth loss. Mechanisms of inflammatory matrix degradation and tissue resorption in IR are largely unclear. In this study, we used a combination of Cre-loxP reporter, flow cytometry, cell transplantation, and enzyme activities assay to mechanistically investigate the role of regenerative cells, odontoblasts (ODs), in inflammatory mineral resorption and matrices degradation. We report that inflamed ODs have strong capabilities of matrix degradation and tissue resorption. Traditionally, ODs are regarded as hard-tissue regenerative cells; however, our data unexpectedly present ODs as a crucial population that participates in IR-associated tissue deconstruction. Specifically, we uncovered that nuclear factor-kappa b (NF-κB) signaling orchestrated Tumor necrosis factor α (TNF-α)-induced matrix metalloproteinases (Mmps) and Cathepsin K (Ctsk) functions in ODs to enhance matrix degradation and tissue resorption. Furthermore, TNF-α increases Rankl/Opg ratio in ODs via NF-κB signaling by impairing Opg expression but increasing Rankl level, which utterly makes ODs cell line 17IIA11 (A11) become Trap+ and Ctsk+ multinucleated cells to perform resorptive actions. Blocking of NF-κB signaling significantly rescues matrix degradation and resorptive functions of inflamed ODs via repressing vital inflammatory proteinases Mmps and Ctsk. Utterly, via utilizing NF-κB specific small molecule inhibitors we satisfactorily attenuated inflammatory ODs-associated human dental IR in vivo. Our data reveal the underlying mechanisms of inflammatory matrix degradation and resorption via proteinase activities in IR-related pathological conditions.


Subject(s)
Humans , Matrix Metalloproteinases/metabolism , Minerals/metabolism , NF-kappa B/metabolism , Odontoblasts/metabolism , Osteoclasts/metabolism , RANK Ligand/metabolism , Tumor Necrosis Factor-alpha/metabolism
16.
Zhongguo Zhong Yao Za Zhi ; (24): 880-888, 2022.
Article in Chinese | WPRIM | ID: wpr-928005

ABSTRACT

To clarify the content characteristics of mineral elements in different Artemisia argyi germplasm resources and their relationship with the quality properties of Artemisiae Argyi Folium, this study measured the content of 10 mineral elements including nitrogen(N), phosphorus(P), potassium(K), calcium(Ca), magnesium(Mg), aluminum(Al), manganese(Mn), iron(Fe), copper(Cu), and zinc(Zn) in 100 Artemisia argyi germplasm samples. Besides, their relationship with the quality properties of Artemisiae Argyi Folium was explored by correlation analysis, path analysis, and cluster analysis. The results demonstrated that the variation coefficient of the 10 mineral elements in Artemisiae Argyi Folium ranged from 12.23% to 64.38%, and the genetic diversity index from 0.97 to 3.09. The genetic diversities of N, P, and Zn were obvious. As revealed by the correlation analysis, N, P, and K showed strong positive correlations with each other. Except that Mg and Al were negatively correlated, Ca, Mg, Al, Mn, Fe, Cu, and Zn were positively correlated. The correlation analysis of mineral elements with the quality properties of Artemisiae Argyi Folium proved the significant correlations of 17 pairs of characters. According to the path analysis, P, K, Ca, and Mn greatly affected the yield of Artemisiae Argyi Folium, P, K, and Mg the output rate of moxa, N, P, and K the content of total volatile oil, P and K the content of eucalyptol, and P, K, and Ca the content of eupatilin. The 100 germplasm samples were clustered into three groups. Specifically, in cluster Ⅰ, the enrichment capacity of P, K, and Mg elements was strong, and the comprehensive properties of mineral elements were better, implying good development potential. Ca, Mn, Fe, and Zn elements in cluster Ⅱ and N and Al in cluster Ⅲ displayed strong enrichment capacities. This study has provided new ideas for resource evaluation and variety breeding of A. argyi and also reference for fertilizer application.


Subject(s)
Artemisia/genetics , Iron , Minerals/analysis , Plant Breeding , Plant Leaves/chemistry
17.
Braz. j. biol ; 82: e234018, 2022. tab, graf
Article in English | LILACS, VETINDEX | ID: biblio-1249233

ABSTRACT

Root deformation (RD) caused by errors in the pricking out process are irreversible and very difficult to detect in container-grown seedlings at the time of planting in the field. The objective of this study was to evaluate the effects of RD on leaf gas exchange, growth, biomass allocation and mineral nutrition of G. americana seedlings during the recovery phase after soil flooding. Four-months-old seedlings, with and without RD, were flooded for 42 days and their recovery was evaluated 28 days after soil drainage. There were no significant interactions between RD and soil flooding for all leaf gas exchange, growth and mineral nutrition after soil drainage, with the exception of leaf P concentrations. In plants with no RD, the P concentration in leaves of non-flooded plants was significantly higher than that of plants with RD. Soil flooding and RD did not influence leaf or root N concentrations or whole-plant N content. RD increased the K concentration in the roots, but not in the leaves. Changes in the nutrient concentrations in leaves and roots indicate that RD may affect physiological performance of seedlings after planting in the field.


A deformação da raiz (RD) causada por erros no processo de repicagem é irreversível e difícil de detectar em mudas produzidas em embalagens no momento do plantio no campo. O objetivo deste estudo foi avaliar os efeitos do RD nas trocas gasosas foliares, crescimento, alocação de biomassa e nutrição mineral de mudas de G. americana na fase de recuperação após o alagamento do solo. Mudas com quatro meses de idade, com e sem RD, foram alagadas por 42 dias e a sua recuperação foi avaliada 28 dias após a drenagem do solo. Não houve interação significativa entre RD e alagamento do solo nas trocas gasosas foliares, crescimento e nutrição mineral após a drenagem, com exceção das concentrações de P foliar. Em plantas sem RD, a concentração de P nas folhas de plantas não alagadas foi significativamente maior que a das plantas com RD. O alagamento do solo e a RD não influenciaram as concentrações de N nas folhas e raízes, e no conteúdo de N na planta inteira. A RD aumentou a concentração de K nas raízes, mas não nas folhas. Alterações nas concentrações de nutrientes nas folhas e raízes indicam que a RD pode afetar o desempenho fisiológico das mudas após o plantio no campo.


Subject(s)
Soil , Seedlings , Plant Roots , Plant Leaves , Floods , Minerals
18.
Braz. j. biol ; 82: e236471, 2022. tab, graf
Article in English | LILACS, VETINDEX | ID: biblio-1249254

ABSTRACT

Date fruit is known to be the staple food in the Arab countries. It provides a lot of potential health benefits and can be the essential source of nutrients. The majority of Moroccan varieties are not characterized for their chemical, biochemical and quality properties. The aim of this work was to assess the chemical composition of 17 varieties of Moroccan date fruits (Phoenix dactylifera L.) and to determine their nutritive components. The analysis showed that the dates are rich in sugars (51.80-87.98%), they contain low concentration of proteins (1.09-2.80%) and lipids (0.16-0.39%). The predominant mineral is potassium (1055.26-1604.10 mg/100 g DW). Moreover, they contain high concentrations of malic acid (69.48-495.58 mg/100 g (DW)), oxalic acid (18.47-233.35 mg/100 g DW) and tartaric acid (115.70-484.168 mg/100 g DW). These results suggest that the date fruit are nutritious and can be an excellent source for human nutrition and health benefits.


A fruta da tâmara é conhecida por ser o alimento básico nos países árabes. Oferece muitos benefícios potenciais à saúde e pode ser a fonte essencial de nutrientes. A maioria das variedades marroquinas não se caracteriza por suas propriedades químicas, bioquímicas nem de qualidade. O objetivo deste trabalho foi avaliar a composição química de 17 variedades de frutos de tâmara marroquina (Phoenix dactylifera L.) e determinar seu valor nutritivo. A análise mostrou que as tâmaras são ricas em açúcares (51,80-87,98%) e contêm baixa concentração de proteínas (1,09-2,80%) e lipídios (0,16-0,39%). O mineral predominante é o potássio (1.055,26-1.604,10 mg/100 g DW). Além disso, contêm altas concentrações de ácido málico (69,48-495,58 mg/100 g DW), ácido oxálico (18,47-233,35 mg/100 g DW) e ácido tartárico (115,70-484,168 mg/100 g DW). Esses resultados sugerem que o fruto da tamareira é nutritivo e pode ser uma excelente fonte de nutrição humana e conferir benefícios à saúde.


Subject(s)
Humans , Phoeniceae , Clone Cells/chemistry , Fruit/chemistry , Minerals/analysis , Nutritive Value
19.
Int. j. morphol ; 40(2): 530-539, 2022. ilus, tab
Article in Spanish | LILACS | ID: biblio-1385613

ABSTRACT

RESUMEN: En salmonicultura se utilizan imágenes de rayos X, para evaluar la columna vertebral y las aletas, pero estas no permiten cuantificar los minerales que constituyen el hueso, para esto se utilizan otras técnicas que son destructivas. La Microscopía Electrónica de Barrido de presión variable (VP SEM) acoplada al detector espectroscopia de rayos X de energía dispersiva (EDX) acoplado, nos permite analizar la microestructura y a la vez determinar elementos químicos, porcentaje y distribución presentes en puntos específicos en una muestra. Se utilizaron 5 truchas control y 5 con deformidad mandibular, de agua dulce en etapa de smolt, se analizó la estructura y mineralización del hueso, se eligieron en promedio 6 puntos de cuantificación por región de interés y se analizaron mediante Microscopía Electrónica de Barrido (VP SEM-EDX). Los datos obtenidos muestran porcentaje en masa de Ca promedio en hueso articular de truchas fueron de 8.07 % y de 14.48 % en truchas con deformidad mandibular y control respectivamente y el porcentaje en masa promedio de P es de 4.07 % y 7.60 %, en truchas con deformidad mandibular y control respectivamente. Se identificó además otros elementos presentes en la muestra como Mg, Na, C, O, N, S, F, Zn, Al y Fe, con especial interés en el aumento de carbono en las muestras analizadas con deformidad mandibular y la presencia de aluminio en todas las muestras. La Técnica de VP SEM-EDX, permite evaluar de forma directa, sin destrucción de la muestra y con una preparación mínima de la muestra. En el hueso, la aplicación más frecuente de SEM-EDX es la medición del contenido de Ca y P y la relación que existe entre estos elementos Ca/P, en la muestra. Paralelamente la técnica nos permite la detección de otros microelementos provenientes del agua o de la alimentación y que eventualmente pueden provocar alteraciones en los peces, confirmando la hipótesis que el microanálisis elemental tiene utilidad para la salmonicultura.


SUMMARY: In salmon farming systems, X-ray images are used to evaluate the spine and fins, but these do not allow quantifying the minerals that make up the bone, for different techniques that are destructive are used. Variable Pressure Scanning Electron Microscopy (VP SEM) coupled to an Energy Dispersive X-ray spectroscopy detector (EDX), allows us to analyze the microstructure and at the same time determine chemical elements, percentages, and distribution present at specific points in a sample. Five control and five jaw deformity trout, from freshwater and in the smolt stage were used. The structure and mineralization of the bone were analyzed, an average six quantification points were chosen per region of interest (ROI) and then they were analyzed by Scanning Electron Microscopy (VP SEM-EDX). The data obtained have shown the average mass percentage of calcium in trout joint bone was 8.07 % and 14.48 % in jaw deformity and control trout, respectively; and the average mass percentage of phosphorus is 4.07 % and 7.60 %, in jaw deformity and control trout, respectively. Other elements present in the sample were also identified, such as magnesium, sodium, carbon, oxygen, nitrogen, sulphur, fluorine, zinc, aluminium, and iron, with special interest the increase of carbon in the analyzed samples with mandibular deformity and the presence of aluminum in all samples. The VP SEM-EDX Technique allows direct evaluation, without destruction of the sample and with minimal sample preparation. In bone, the most frequent application of SEM-EDX is the measurement of the content of calcium (Ca) and phosphorus (P) and the relationship that exists between these elements, calcium/phosphorus (Ca/P), in the sample. At the same time, the technique allows us to detect other microelements from water or food that can eventually cause alterations in fish, confirming the hypothesis that elemental microanalysis is useful for salmon farming.


Subject(s)
Animals , Tooth/chemistry , Oncorhynchus mykiss , Mandible/chemistry , Minerals/analysis , Spectrometry, X-Ray Emission , Tooth/ultrastructure , Microscopy, Electron, Scanning , Mandible/ultrastructure
20.
Rev. ADM ; 78(6): 314-331, nov.-dic. 2021. ilus, tab, graf
Article in Spanish | LILACS | ID: biblio-1354416

ABSTRACT

La dentina se compone de un mineral de fosfato de calcio identificado como dahllita, que se dispone en pequeños cristales de hidroxiapatita carbonatada con dimensiones de 36 × 25 × 4 nm, y por una fase orgánica cuyo principal componente es el colágeno tipo 1 en 90%, que se orienta en forma de malla. Esta conformación corresponde a los dientes permanentes. Dentro de las estructuras, encontramos túbulos dentinarios que miden, aproximadamente, entre 0.5-1 µm de diámetro en la periferia y hasta 3-5 µm cerca de la pulpa. En el presente estudio, realizado en dentina de dientes temporales, el lumen de dichos túbulos es más grande cuando se encuentra cerca de la pulpa dental. Asimismo, se encontraron cambios elementales importantes de acuerdo con las diferentes profundidades en las que se observó, encontrando un aumento en el peso porcentual de carbono cuando se encuentra a mayor profundidad, lo que indica una composición orgánica mayor en la dentina pulpar. En estudios de dientes permanentes esta composición es disminuida y con mayor concentración en la dentina cercana a la unión amelodentinaria. En dentina de dientes temporales se encontraron diferencias en el recuento de túbulos dentinarios por mm2, comparado a la dentina de dientes permanentes, donde el número de túbulos no varía mucho (AU)


Dentin is composed of a calcium phosphate mineral identified as dahllite, which is arranged in small crystals of carbonated hydroxyapatite with dimensions of 36 × 25 × 4 nm, and by an organic phase whose main component is type l collagen in 90%, which is oriented in the form of a mesh. This conformation corresponds to permanent teeth. Within the structures, we find dentin tubules that measure approximately 0.5-1 µm in diameter at the periphery and up to 3-5 µm near the pulp. In the present study, carried out in dentin of primary teeth, the lumen of these tubules is larger when it is close to the dental pulp. Likewise, important elemental changes were found according to the different depths in which it was observed, finding an increase in the percentage weight of carbon when it is at a greater depth, indicating a greater organic composition in the pulp dentin. In studies of permanent teeth, this composition is decreased and with a higher concentration in the dentin near the amelodentinal junction. In dentin of primary teeth, differences were found in the count of dentin tubules per mm2, compared to dentin of permanent teeth, where the number of tubules did not vary much (AU)


Subject(s)
Humans , Tooth, Deciduous , Dentin/ultrastructure , Dentinogenesis , Phosphates , Phosphoric Acids , Acid Etching, Dental , Microscopy, Electron, Scanning , Calcium , Collagen , Durapatite , Dentition, Permanent , Collagen Type I , Minerals
SELECTION OF CITATIONS
SEARCH DETAIL