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1.
Huan Jing Ke Xue ; 45(2): 1150-1160, 2024 Feb 08.
Artigo em Chinês | MEDLINE | ID: mdl-38471952

RESUMO

In order to evaluate the feasibility of using Burkholderia sp. Y4 as a cadmium (Cd)-reducing bacterial agent in contaminated wheat fields, the changes in the rhizosphere soil microbial community and Cd available state, as well as the content and transport characteristics of Cd in the wheat root, basal node, internode, and grain under the treatment of strain Y4 were tested using microbial high-throughput sequencing, step-by-step extraction, subcellular distribution, and occurrence analyses. The results showed that root application of strain Y4 significantly reduced the root and grain Cd content of wheat by 7.7% and 30.3%, respectively, compared with that in the control treatment. The Cd content and Cd transfer factor results in wheat vegetative organs showed that strain Y4 reduced the Cd transfer factor from basal node to internode by 79.3%, and Cd content in the wheat internode stem also decreased by 50.9%. The study of Cd occurrence morphology showed that strain Y4 treatment increased the proportion of residual Cd in roots and basal ganglia, decreased the contents of inorganic and water-soluble Cd in roots, and increased the content of residual Cd in basal ganglia. Further examination of the subcellular distribution of Cd showed that the Cd content in root cell walls and basal ganglia cell fluid increased by 21.3% and 98.2%, respectively, indicating that the Cd fixation ability of root cell walls and basal ganglia cell fluid was improved by the strain Y4 treatment. In the rhizosphere soil, it was found that the microbial community structure was changed by strain Y4 application. Under the Y4 treatment, the relative abundance of Burkholderia increased from 9.6% to 11.5%, whereas that of Acidobacteriota decreased. Additionally, the relative abundance of Gemmatimonadales, Pseudomonadales, and Chitinophagales were also increased by strain Y4 treatment. At the same time, the application of strain Y4 increased the pH value of rhizosphere soil by 8.3%. The contents of exchangeable Cd, carbonate-bound Cd, and iron-manganese oxide-bound Cd in the soil decreased by 44.4%, 21.7%, and 15.9%, respectively, whereas the proportion of residual Cd reached 53.6%. Root application of strain Y4 increased the contents of nitrate nitrogen and ammonium nitrogen in the soil by 22.0% and 21.4%, respectively, and the contents of alkaline nitrogen also increased to a certain extent. In conclusion, the root application of strain Y4 not only improved soil nitrogen availability but also inhibited Cd transport and accumulation from contaminated soil to wheat grains in a "two-stage" manner by reducing Cd availability in rhizosphere soil and improving Cd interception and fixation capacity of wheat roots and basal nodes. Therefore, Burkholderia Y4 has application potential as a Cd-reducing and growth-promoting agent in wheat.


Assuntos
Burkholderia , Compostos Férricos , Poluentes do Solo , Cádmio/análise , Triticum , Burkholderia/fisiologia , Fator de Transferência , Solo/química , Nitrogênio/análise , Poluentes do Solo/análise
2.
Appl Radiat Isot ; 204: 111136, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38064806

RESUMO

The transfer factor (TF) of naturally occurring radioactivity between soil and olive mill pomace (OMP) was calculated in this study. Nine samples were collected from three locations in north Jordan. The study focused on calculating the 226Ra, 232Th, 40K, and 137Cs activity concentrations in both soil and OMP samples using high-purity germanium (HPGe) gamma-ray spectrometry. The average activity levels in the soil samples were determined to be 24.0±10.1, 31.3±9.1, 323.7±68.4, and 1.0±0.4 (Bqkg-1), respectively. In the OMP samples, the average activity levels of 226Ra, 232Th, and 40K were 6.7±1.8, 3.2±1.2, and 185.5±56.6 (Bqkg-1), respectively, while no trace of 137Cs was detected. The activity concentrations of 226Ra, 232Th, and 40K in the soils and OMP samples are within the average worldwide ranges. The calculated values of the TF geometric mean (geometric standard deviation) for 226Ra, 232Th, and 40K were determined to be 0.35 (0.2), 0.11 (0.05), and 0.59 (0.19), respectively. This research offers valuable information about the behavior and movement of radionuclides in the environment.


Assuntos
Olea , Monitoramento de Radiação , Radioatividade , Poluentes Radioativos do Solo , Fator de Transferência/análise , Poluentes Radioativos do Solo/análise , Monitoramento de Radiação/métodos , Radioisótopos de Césio/análise , Espectrometria gama , Solo/química
3.
Appl Radiat Isot ; 205: 111170, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38160568

RESUMO

The levels of naturally occurring radionuclides in soil, grass, and milk were measured in this study in order to calculate the transfer factor of radionuclides from soil to grass and grass to milk obtained from Erbil governorate in Iraq. High efficiency gamma spectrometry used for the measurement. It has been determined that the mean activity concentrations of 232Th, 226Ra, and 40K are 3.08, 8.37, and 253 BqKg-1 in soil, 0.5, 0.39, and 203.05 BqKg-1, in grass, and 0.29, 0.084, and 29.69 BqL-1, in milk, respectively. For soil to grass, the transfer factor values for 232Th, 226Ra, and 40K were found to be 0.18, 0.052, and 0.84, respectively, for soil to grass. For grass to milk, the transfer factor values for 232Th, 226Ra, and 40K were found to be 0.45, 0.166, and 0.11 dayL-1, respectively. The average transfer factor for 232Th, 226Ra, and 40K in all samples were lower than the world average value.


Assuntos
Monitoramento de Radiação , Radioatividade , Poluentes Radioativos do Solo , Animais , Solo/química , Poaceae/química , Fator de Transferência/análise , Leite/química , Iraque , Monitoramento de Radiação/métodos , Poluentes Radioativos do Solo/análise , Radioisótopos/análise
4.
Molecules ; 28(24)2023 Dec 05.
Artigo em Inglês | MEDLINE | ID: mdl-38138452

RESUMO

Repeated exposure to pathogens leads to evolutionary selection of adaptive traits. Many species transfer immunological memory to their offspring to counteract future immune challenges. Transfer factors such as those found in the colostrum are among the many mechanisms where transfer of immunologic memory from one generation to the next can be achieved for an enhanced immune response. Here, a library of 100 plants with high protein contents was screened to find plant-based proteins that behave like a transfer factor moiety to boost human immunity. Aqueous extracts from candidate plants were tested in a human peripheral blood mononuclear cell (PBMC) cytotoxicity assay using human cancerous lymphoblast cells-with K562 cells as a target and natural killer cells as an effector. Plant extracts that caused PBMCs to exhibit enhanced killing beyond the capability of the colostrum-based transfer factor were considered hits. Primary screening yielded an 11% hit rate. The protein contents of these hits were tested via a Bradford assay and Coomassie-stained SDS-PAGE, where three extracts were confirmed to have high protein contents. Plants with high protein contents underwent C18 column fractionation using methanol gradients followed by membrane ultrafiltration to isolate protein fractions with molecular weights of <3 kDa, 3-30 kDa, and >30 kDa. It was found that the 3-30 kDa and >30 kDa fractions had high activity in the PBMC cytotoxicity assay. The 3-30 kDa ultrafiltrates from the top two hits, seeds from Raphanus sativus and Brassica juncea, were then selected for protein identification by mass spectrometry. The majority of the proteins in the fractions were found to be seed storage proteins, with a low abundance of proteins involved in plant defense and stress response. These findings suggest that Raphanus sativus or Brassica juncea extracts could be considered for further characterization and immune functional exploration with a possibility of supplemental use to bolster recipients' immune response.


Assuntos
Proteínas de Plantas , Raphanus , Humanos , Proteínas de Plantas/farmacologia , Proteínas de Plantas/metabolismo , Leucócitos Mononucleares/metabolismo , Fator de Transferência , Plantas/metabolismo , Mostardeira/metabolismo
5.
J Environ Radioact ; 270: 107309, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37837830

RESUMO

A German dataset with soil-plant transfer factors for radiocaesium including many co-variables was analysed and prepared for the application of the Random Forest (RF) algorithm using the R libraries 'party', and 'caret'. A RF predictive model for soil-plant transfer factor was created based on 10 co-variables. These are, for example, taxonomic plant family, plant part, soil type and the exchangeable potassium concentration in the soil. The RF model results were compared with the results of two (semi-)mechanistic models. Of the more than 3000 entries in the original dataset, only about 1200 could be used, as this was the largest complete dataset with the largest number of co-variables available. The obtained RF predictive model can reproduce the experimental observations better than the two (semi)-mechanistic models, which are based on many assumptions and fixed parameter values. Model performance was quantified using the metrics of Root Mean Square Error (rmse) and Mean Absolute Error (mae). The RF model was able to reproduce the variability of the data by up to 6 orders of magnitude. The categorical co-predictors, especially taxonomic plant family and plant part, have a greater influence than the numerical co-predictors, such as pH and exchangeable soil potassium concentration. This feasibility study shows that RF is a promising tool to obtain predictive models for transfer factors. However, to build a widely applicable predictive model, a dataset is needed that contains at least thousands of entries for transfer factors and for the most important co-variables and considers a large parameter space.


Assuntos
Monitoramento de Radiação , Poluentes Radioativos do Solo , Solo , Poluentes Radioativos do Solo/análise , Fator de Transferência , Algoritmo Florestas Aleatórias , Estudos de Viabilidade , Plantas , Potássio/análise
6.
Sci Rep ; 13(1): 14162, 2023 08 29.
Artigo em Inglês | MEDLINE | ID: mdl-37644128

RESUMO

The aggregated transfer factor (Tag) is commonly used to represent the actual transfer of radiocesium from soil to wild edible plants, but the values have shown substantial variation since the Fukushima nuclear accident. To elucidate the factors causing this variation, we investigated the effects of spatial scale and vertical 137Cs distribution in the soil on the variation of Tag-137Cs values for one of the most severely contaminated wild edible plants, Eleutherococcus sciadophylloides Franch. et Sav. (Koshiabura). The variation in Tag-137Cs values was not reduced by direct measurement of 137Cs deposition in soil samples from the Koshiabura habitat, as a substitute for using spatially averaged airborne survey data at the administrative district scale. The 137Cs activity concentration in Koshiabura buds showed a significant positive correlation with the 137Cs inventories only in the organic horizon of soil from the Koshiabura habitat. The ratio of 137Cs inventories in the organic horizon to the total 137Cs deposition in soil exhibited substantial variation, especially in broad-leaved deciduous forests that Koshiabura primarily inhabits. This variation may be the cause of the wide range of Tag-137Cs values observed in Koshiabura buds when calculated from the total 137Cs deposition in soil.


Assuntos
Araliaceae , Eleutherococcus , Fator de Transferência , Plantas Comestíveis , Solo
7.
Sci Total Environ ; 899: 165467, 2023 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-37454838

RESUMO

Ceasium-137 and 90Sr are major artificial radionuclides that have been released into the environment. Soil-to-plant transfer of radionuclides is an important route to food contamination. The radionuclide activity concentrations in crops must be quantitatively predicted for estimating the internal radiation doses from food ingestion. In this study, soil and potato samples were collected from three study sites contaminated with different sources of 137Cs and 90Sr: Aomori Prefecture (global fallout) and two accidental release areas (Fukushima Prefecture and the Chornobyl exclusion zone). The 137Cs activity concentrations in the soil and potato samples widely ranged from 1.0 to 250,000 and from 0.048 to 200,000 Bq kg-1 dry weight, respectively. The soil-to-potato transfer factor of 137Cs also ranged widely (0.0015-1.1) and decreased with increasing concentration of exchangeable K. Meanwhile, the activity concentrations of 90Sr in the soil and potato samples were 0.50-64,000 and 0.027-18,000 Bq kg-1 dry weight respectively, and the soil-to-potato transfer factor of 90Sr was 0.023-0.74, decreasing with increasing concentration of exchangeable Ca. The specific activity ratios of 137Cs/Cs and 90Sr/Sr in the exchangeable fraction were similar to those in potatoes, with a factor of 3 in the ±95 % confidence intervals over six orders of magnitude and a factor of 2 in the ±95 % confidence intervals over five orders of magnitude, respectively. According to the data, the accuracy of predicting the activity concentrations of 137Cs and 90Sr in potatoes can be improved by applying the specific activity ratios of 137Cs/Cs and 90Sr/Sr in the exchangeable fraction. This approach accounts for variable factors such as the effects of K and Ca fertilization and soil characteristics. It also emphasizes the benefit of determining the stable Cs and Sr concentrations in potatoes and other crops prior to possible future contamination.


Assuntos
Acidente Nuclear de Chernobyl , Acidente Nuclear de Fukushima , Monitoramento de Radiação , Poluentes Radioativos do Solo , Solanum tuberosum , Solo , Fator de Transferência , Poluentes Radioativos do Solo/análise , Radioisótopos de Césio/análise
8.
Medicine (Baltimore) ; 102(27): e34186, 2023 Jul 07.
Artigo em Inglês | MEDLINE | ID: mdl-37417619

RESUMO

Allergic rhinitis (AR) has considerable impact on the general health of individuals. Therefore, treatment trials should include an evaluation of quality of life. We aimed to determine changes in the quality of life of moderate/severe AR patients treated with standard treatment in addition to dialyzable leukocyte extract (DLE), a peptide-based immunomodulator. In a prospective, non-controlled trial, DLE was added to the standard treatment regimen for patients with moderate/severe AR. DLE was administered orally at 2 mg per day for 5 days, followed by 4 mg per week for 5 weeks, and then 2 mg per week for 5 weeks. The primary endpoints were overall improved Standardized Rhinoconjunctivitis Quality of Life Questionnaire (RQLQ) scores, domain scores, and individual item scores of 0.5 points or higher. Statistical significance was defined as P < .05. Thirty patients (50% female) aged 14 to 60 years old (33.4 ± 11.9) were enrolled in this study. The mean overall basal quality of life score was 3.41 ± 1.22. After 11 weeks, the mean RQLQ score was 1.74 ± 1.09 ( P < .0001; 95% confidence interval [CI], 1.05-2.33), and all the domain scores improved (daily activities P < .001, 95% CI 0.91-2.15, sleep P < .001, 95% CI 0.9-2.26, non-hay fever symptoms P = .001, 95% CI 0.51-1.82, practical problems P < .001, 95% CI 1.55-2.85, nasal symptoms P < .001, 95% CI 1.36-2.67, ocular symptoms P < .001, 95% CI 1.05-2.17, emotional P < .001, 95% CI 1.23-2.55). Each of the 28 individual item scores on the RQLQ showed clinical (minimal important difference [MID] ≥ 0.5) and statistical ( P < .05) improvements. DLE might be a beneficial adjuvant treatment for AR. Our results provide preliminary data for future research. Clinical trials registration ID: NCT02506998.


Assuntos
Conjuntivite , Rinite Alérgica , Adolescente , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem , Estudos Prospectivos , Qualidade de Vida , Rinite Alérgica/tratamento farmacológico , Inquéritos e Questionários , Fator de Transferência
9.
Environ Monit Assess ; 195(5): 579, 2023 Apr 17.
Artigo em Inglês | MEDLINE | ID: mdl-37067680

RESUMO

Bangladesh is a rapidly developing country, which is vulnerable to various types of pollution due to the large-scale industrial and associated human activities that might potentially affect the locally harvested foodstuffs. Therefore, the transfer factor is an essential tool to assess the safety of foodstuffs due to the presence of natural radioactivity in environmental matrix and/or strata. This is a first study of its kind conducted in a well-known region for mango farming in Bangladesh, measuring the uptake of naturally occurring radioactive materials (NORMs) by grass and mango from soil to assess the ingestion doses to humans. The HPGe gamma-ray detector was used to determine the concentrations of NORMs in samples of soil (20), grass (10), and mango (10), which were then used to calculate the transfer factors of soil to grass and soil to mango. Average activity concentrations of 226Ra, 232Th, and 40K in associated soil samples (47.27 ± 4.10, 64.49 ± 4.32, 421.60 ± 28.85) of mango and 226Ra and 232Th in associated soil samples (45.07 ± 3.93, 52.17 ± 3.95) of grass were found to exceed the world average values. The average transfer factors (TFs) for mango were obtained in the order of 40K(0.80) > 226Ra (0.61) > 232Th (0.31), and for grass, it shows the order of 40K (0.78) > 232Th (0.64) > 226Ra (0.56). However, a few values (3 mango samples and 3 grass samples) of the estimated TFs exceeded the recommended limits. Moreover, Bangladesh lacks the transfer factors for most of the food crops; therefore, calculation of TFs in the major agricultural products is required all over Bangladesh, especially the foodstuffs produced near the Rooppur Nuclear Power Plant, which is scheduled to be commissioned in 2023.


Assuntos
Mangifera , Monitoramento de Radiação , Poluentes Radioativos do Solo , Humanos , Solo , Fator de Transferência , Bangladesh , Poaceae , Poluentes Radioativos do Solo/análise , Radioisótopos/análise
10.
J Environ Radioact ; 262: 107149, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-36906962

RESUMO

The soil-to-orange fruit transfer factor of naturally occurring radionuclides was investigated. The temporal evolution of the three identified radionuclides, Ra-226, Th-232, and K-40, concentration was also examined throughout the growth period of the orange fruits until they reached maturity. A mathematical model was developed to predict the soil-to-fruit transfer of these radionuclides during the development of orange fruits. The results were found to agree with the experimental data. The experimental and modeling results revealed that the transfer factor for all radionuclides showed a similar exponential decline with the growth of the fruit and reached its minimum value when the fruit was ripe.


Assuntos
Monitoramento de Radiação , Poluentes Radioativos do Solo , Frutas/química , Fator de Transferência , Poluentes Radioativos do Solo/análise , Radioisótopos/análise , Solo
11.
Health Phys ; 124(4): 285-300, 2023 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-36727932

RESUMO

ABSTRACT: Uranium aerosol exposure can be a health risk factor for workers in the nuclear fuel industry. Good knowledge about aerosol dissolution and absorption characteristics in the gastrointestinal tract is imperative for solid dose assessments and risk management. In this study, an in vitro dissolution model of the GI tract was used to experimentally study solubility of size-fractionated aerosols. The aerosols were collected from four major workshops in a nuclear fuel fabrication plant where uranium compounds such as uranium hexafluoride (UF 6 ), uranium dioxide (UO 2 ), ammonium uranyl carbonate, AUC [UO 2 CO 3 ·2(NH 4 ) 2 CO 3 ] and triuranium octoxide (U 3 O 8 ) are present. The alimentary tract transfer factor, f A , was estimated for the aerosols sampled in the study. The transfer factor was derived from the dissolution in the small intestine in combination with data on absorption of soluble uranium. Results from the conversion workshop indicated a f A in line with what is recommended (0.004) by the ICRP for inhalation exposure to Type M materials. Obtained transfer factors, f A , for the powder preparation and pelletizing workshops where UO 2 and U 3 O 8 are handled are lower for inhalation and much lower for ingestion than those recommended by the ICRP for Type M/S materials f A = 0.00029 and 0.00016 vs. 0.0006 and 0.002, respectively. The results for ingestion and inhalation f A indicate that ICRP's conservative recommendation of f A for inhalation exposure is applicable to both ingestion and inhalation of insoluble material in this study. The dissolution- and subsequent absorption-dependence on particle size showed correlation only for one of the workshops (pelletizing). The absence of correlation at the other workshops may be an effect of multiple chemical compounds with different size distribution and/or the reported presence of agglomerated particles at higher cut points having more impact on the dissolution than particle size. The impact on dose coefficients [committed effective dose (CED) per Bq] of using experimental f A vs. using default f A recommended by the ICRP for the uranium compounds of interest for inhalation exposure was not significant for any of the workshops. However, a significant impact on CED for ingestion exposure was observed for all workshops when comparing with CED estimated for insoluble material using ICRP default f A . This indicates that the use of experimentally derived site-specific f A can improve dose assessments. It is essential to acquire site-specific estimates of the dissolution and absorption of uranium aerosols as this provides more realistic and accurate dose- and risk-estimates of worker exposure. In this study, the results indicate that ICRP's recommendations for ingestion of insoluble material might overestimate absorption and that the lower f A found for inhalation could be more realistic for both inhalation and ingestion of insoluble material.


Assuntos
Compostos de Urânio , Urânio , Humanos , Doses de Radiação , Solubilidade , Urânio/análise , Tamanho da Partícula , Fator de Transferência , Aerossóis/análise
12.
J Environ Radioact ; 261: 107144, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-36848768

RESUMO

Soil-to-plant transfer factors (TFs) are of fundamental importance in measuring the environmental impact due to the presence of radioactivity in soil and agricultural crops. The present study thus to measure soil-to-plant TFs of 226Ra, 232Th, and 40K on horticultural plants cultivated on ex-tin mining land in Bangka Belitung islands. There were 21 samples of 15 species and 13 families from 17 locations comprising four vegetables species, five fruits species, three staple foods species, and three others. The TFs were measured in leaves, fruit, cereal, kernel, shoot, or rhizome. The results showed that 238U and 137Cs were almost not found in plants, whereas 226Ra, 232Th, and 40K were measured. In soursop leaf, common pepper leaf, and cassava peel, on 226Ra, the TFs for the non-edible parts, (0.42 ± 0.02; 1.05 ± 0.17; 0.32 ± 0.01 respectively) were significantly higher than soursop fruit, common pepper seed, and cassava root for the edible parts (0.01 ± 0.005; 0.29 ± 0.09; 0.04 ± 0.02 respectively).


Assuntos
Monitoramento de Radiação , Poluentes Radioativos do Solo , Humanos , Estanho , Solo , Fator de Transferência , Indonésia , Poluentes Radioativos do Solo/análise , Verduras , Mineração
13.
Biol Trace Elem Res ; 201(1): 479-492, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-35182384

RESUMO

Vegetable cultivation areas in the Anadrinia region may have higher than background concentrations of potentially toxic elements (PTEs) from contaminated sources including anthropogenic activity and lithologic composition. The purpose of the present study was to assess PTEs concentrations in soil and vegetables and their impact on human health. In this study, 50 soils and 5 vegetables were sampled from the studied area. PTEs (As, Cd, Co, Cr, Cu, Fe, Hg, Mn, Ni, Pb, and Zn) were measured by inductively coupled plasma optical emission spectroscopy (ICP-OES) after digestion in microwave system. PTEs in soil and vegetables were assessed and compared to international data (Dutch List and WHO/FAO 2011), and their toxicological risk was estimated using transfer factor (TF), estimated daily intake (EDI), and hazard quotients (HQ). The average values of As, Cd, Co, Fe, and Mn in soil were 44.96, 0.324, 16.34, 13,172, and 765.1 mg/kg, and Cr, Ni, and Pb in vegetables were 21.02, 17.11, and 4.982 mg/kg. TF values were less than 1, suggesting low bioaccumulation. EDI values of Cu, Ni, Pb, and Zn were 6.29, 6.23, 2.09, and 16.6 mg/kg, higher than international guidelines. HQ values of Pb, Ni, and Cu were 6.22, 3.66, and 1.72, higher than maximum tolerable value 1 indicating significant health risk. Some of the analyzed elements in soil and vegetable exceeded permissible limits to Dutch List and WHO/FAO 2011, respectively. From a health point of view, this study revealed vegetable contamination, recommends periodic monitoring.


Assuntos
Metais Pesados , Poluentes do Solo , Humanos , Metais Pesados/análise , Verduras/química , Fator de Transferência , Cádmio , Solo/química , Kosovo , Chumbo , Contaminação de Alimentos/análise , Poluentes do Solo/toxicidade , Poluentes do Solo/análise , Medição de Risco/métodos , Monitoramento Ambiental
14.
J Sci Food Agric ; 103(3): 1342-1354, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36151767

RESUMO

BACKGROUND: The aim of this study was to investigate the effects of different doses of chicken spleen transfer factor (TF) on the structure of intestinal epithelial cells in different age groups. One-day-old White Leghorns laying hens were randomly divided into four groups: three groups were administered TF at different dosages (0.10, 0.25 or 1.00 mL) and a fourth group was set as control (administered saline, 1.00 mL). Using hematoxylin and eosin staining, high-throughput sequencing, microbiota analysis, quantitative polymerase reaction and western blotting. RESULTS: We measured the effects of different doses of TF on the following: intestinal mucosal epithelial tissue morphology, intestinal mucosal epithelial barrier-related gene expression profiles, and intestinal epithelial tight junction gene protein levels. The collected data show that TF can improve the absorption of nutrients by increasing villus height and crypt depth, and regulate intestinal flora disorders. Furthermore, we verified that the expression of the claudin and occludin tight junctions between intestinal epithelial cells was increased with TF. this research is very important for focusing on the structure and gene expression of intestinal tissues. CONCLUSION: The results provide a scientific rationale for feeding and nutrition programs for green and healthy farming, as well as technical support to improve the production efficiency of the livestock and poultry breeding industry. © 2022 Society of Chemical Industry.


Assuntos
Galinhas , Fator de Transferência , Animais , Feminino , Fator de Transferência/metabolismo , Fator de Transferência/farmacologia , Galinhas/genética , Baço , Mucosa Intestinal/metabolismo , Células Epiteliais/metabolismo
15.
Paediatr Anaesth ; 33(4): 291-302, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36318604

RESUMO

AIM: Hysteresis is reported between plasma concentration and analgesic effect from nonsteroidal anti-inflammatory drugs. It is possible that the temporal delay between plasma and CSF nonsteroidal anti-inflammatory drugs mirrors this hysteresis. The temporal relationship between plasma and CSF concentrations of COX-inhibitors (celecoxib, rofecoxib, valdecoxib) has been described. The purpose of this secondary data analysis was to develop a compartmental model for plasma and CSF disposition of these COX-2 inhibitors. METHODS: Plasma and CSF concentration-time profiles and protein binding data in 10 adult volunteers given oral celecoxib 200 mg, valdecoxib 40 mg and rofecoxib 50 mg were available for study. Nonlinear mixed effects models with a single plasma compartment were used to link a single CSF compartment with a transfer factor and an equilibration rate constant (Keq). To enable predictive modeling in pediatrics, celecoxib pharmacokinetics were standardized using allometry. RESULTS: Movement of all three unbound plasma COX-2 drugs into CSF was characterized by a common equilibration half-time (T1/2 keq) of 0.84 h. Influx was faster than efflux and a transfer scaling factor of 2.01 was required to describe conditions at steady-state. Estimated celecoxib clearance was 49 (95% CI 34-80) L/h/70 kg and the volume of distribution was 346 (95% CI 237-468) L/70 kg. The celecoxib absorption half-time was 0.35 h with a lag time of 0.62 h. Simulations predicted a 70-kg adult given oral celecoxib 200 mg with maintenance 100 mg twice daily would have a mean steady-state total (bound and unbound) plasma concentration of 174 µg L-1 and CSF concentration of 1.1 µg L-1 . A child (e.g., 25 kg, typically 7 years) given oral celecoxib 6 mg kg-1 with maintenance of 3 mg kg-1 twice daily would have 282 and 1.7 µg L-1 mean plasma and CSF concentrations, respectively. CONCLUSIONS: Transfer of unbound COX-2 inhibitors from plasma to CSF compartment can be described with a delayed effect model using an equilibration rate constant to collapse observed hysteresis. An additional transfer factor was required to account for passage across the blood-brain barrier. Use of a target concentration strategy for dose and consequent plasma (total and unbound) and CSF concentration prediction could be used to inform pediatric clinical studies.


Assuntos
Inibidores de Ciclo-Oxigenase 2 , Fator de Transferência , Humanos , Criança , Adulto , Celecoxib , Ciclo-Oxigenase 2 , Anti-Inflamatórios não Esteroides
16.
Biomed Res Int ; 2022: 1220889, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36425335

RESUMO

Background: Plantar warts are a common cutaneous disease of the sole of the foot caused by human papillomavirus. Photodynamic therapy has gained increasing attention in the treatment of plantar warts. Objective: To investigate the effect of photodynamic therapy combined with transfer factor capsules in the treatment of multiple plantar warts. Methods: Sixty-one patients with multiple plantar warts who visited our outpatient department from September 2017 to August 2019 were randomly divided into two groups. Twenty-three patients received photodynamic therapy (treatment group) and thirty-eight received cryotherapy (control group). Both groups also received immune modulator transfer factor capsules. Skin lesion score, numeric rating scale- (NRS-) 10 score, recurrence rate, adverse reactions, and Dermatology Life Quality Index (DLQI) were analyzed in both groups. Results: The mean skin lesion score improved from 13.39 ± 3.88 before treatment to 1.48 ± 2.50 after the last treatment in the treatment group and from 12.47 ± 2.99 before treatment to 4.47 ± 3.67 after the last treatment in the control group. The success rate after 3 months of treatment was 86.96% in the treatment group and 39.47% in the control group. After 3 months of follow-up, the recurrence rate was significantly lower in the treatment group (20%) than in the control group (53.33%). The mean DLQI score at three months after treatment was significantly lower in the treatment group (3.61 ± 1.16) than in the control group (6.31 ± 2.59). Conclusion: Photodynamic therapy combined with immunomodulators significantly increased the cure rate and reduced the recurrence rate of multiple plantar warts compared with traditional cryotherapy combined with immunomodulators.


Assuntos
Fotoquimioterapia , Verrugas , Humanos , Ácido Aminolevulínico/uso terapêutico , Fator de Transferência/uso terapêutico , Cápsulas , Verrugas/tratamento farmacológico
17.
Environ Monit Assess ; 195(1): 31, 2022 Oct 25.
Artigo em Inglês | MEDLINE | ID: mdl-36282356

RESUMO

Industrialization results in production of large volume of wastewaters, and disposing of them become a serious problem. The wastewaters may have range of heavy metals, which have an impact on soil and plant health. The objective was to evaluate the influence of farm yard manure (FYM) and pressmud (PM) applications on Indian mustard growth and chromium (Cr) uptake in tannery effluent irrigated Cr-contaminated soil. Soil was collected from the tannery effluent irrigated fields (chromium contaminated) of Shekhpura village of Kanpur, India. A pot culture experiment was carried out by growing Indian mustard (Brassica juncea) var. RH 749 on the Cr-contaminated soil with application of different levels and combinations of FYM and PM (at 0, 2.5, and 5 g kg-1 each). Biomass yield, Cr uptake, bioconcentration factor (BCF), transfer factor (TF), transfer efficiency (TE), and Cr removal indices were examined. Higher doses of FYM and PM resulted in reduction of Cr concentrations in shoot (6.60 to 2.50 µg g-1) and root (27.27 to 9.43 µg g-1); and absorption in plant tissues and had improved total dry matter yield (14.56 to 30.94 g pot-1). The use of FYM and PM had a substantial (p ≤ 0.05) impact on phytoremediation parameters like BCF (0.128 to 0.045), TE (59.61 to 64.51%), and Cr removal (0.65 to 0.51%). Combined application of FYM (5 g kg-1) and PM (5 g kg-1) had enhanced the dry matter yield of shoot (12.51 to 26.40 g pot-1) and root (2.05 to 4.54 g pot-1) and reduced the Cr uptake (138.54 to 108.79 mg pot-1) than the individual amendment addition of FYM (138.52 to 135.89 mg pot-1) and PM (126.02 to 130.52 mg pot-1). Combined application of FYM (5 g kg-1) and PM (5 g kg-1) could be beneficial for remediation of Cr-contaminated areas for cultivation of crops.


Assuntos
Metais Pesados , Poluentes do Solo , Mostardeira , Cromo , Poluentes do Solo/análise , Disponibilidade Biológica , Esterco , Águas Residuárias , Fator de Transferência , Monitoramento Ambiental , Solo , Biodegradação Ambiental , Metais Pesados/análise
18.
Int J Mol Sci ; 23(19)2022 Oct 04.
Artigo em Inglês | MEDLINE | ID: mdl-36233073

RESUMO

During the ripening process, the pericarp of chili pepper (Capsicum spp.) fruits accumulates large amounts of carotenoids. Although the carotenoid biosynthesis pathway in the Capsicum genus has been widely studied from different perspectives, the transcriptional regulation of genes encoding carotenoid biosynthetic enzymes has not been elucidated in this fruit. We analyzed RNA-Seq transcriptomic data from the fruits of 12 accessions of Capsicum annuum during the growth, development, and ripening processes using the R package named Salsa. We performed coexpression analyses between the standardized expression of genes encoding carotenoid biosynthetic enzymes (target genes (TGs)) and the genes of all expressed transcription factors (TFs). Additionally, we analyzed the promoter region of each biosynthetic gene to identify putative binding sequences for each selected TF candidate. We selected 83 TFs as putative regulators of the carotenogenic structural genes. From them, putative binding sites in the promoters of the carotenoid-biosynthesis-related structural genes were found for only 54 TFs. These results could guide the search for transcription factors involved in the regulation of the carotenogenic pathway in chili pepper fruits and might facilitate the collection of corresponding experimental evidence to corroborate their participation in the regulation of this biosynthetic pathway in Capsicum spp.


Assuntos
Capsicum , Capsicum/metabolismo , Carotenoides/metabolismo , Frutas/metabolismo , Regulação da Expressão Gênica de Plantas , RNA-Seq , Fatores de Transcrição/genética , Fatores de Transcrição/metabolismo , Fator de Transferência/genética , Fator de Transferência/metabolismo
20.
Nat Commun ; 13(1): 6221, 2022 10 20.
Artigo em Inglês | MEDLINE | ID: mdl-36266270

RESUMO

Rheumatoid arthritis (RA) is an immune-mediated disease affecting diarthrodial joints that remains an unmet medical need despite improved therapy. This limitation likely reflects the diversity of pathogenic pathways in RA, with individual patients demonstrating variable responses to targeted therapies. Better understanding of RA pathogenesis would be aided by a more complete characterization of the disease. To tackle this challenge, we develop and apply a systems biology approach to identify important transcription factors (TFs) in individual RA fibroblast-like synoviocyte (FLS) cell lines by integrating transcriptomic and epigenomic information. Based on the relative importance of the identified TFs, we stratify the RA FLS cell lines into two subtypes with distinct phenotypes and predicted active pathways. We biologically validate these predictions for the top subtype-specific TF RARα and demonstrate differential regulation of TGFß signaling in the two subtypes. This study characterizes clusters of RA cell lines with distinctive TF biology by integrating transcriptomic and epigenomic data, which could pave the way towards a greater understanding of disease heterogeneity.


Assuntos
Artrite Reumatoide , Sinoviócitos , Humanos , Sinoviócitos/metabolismo , Fatores de Transcrição/genética , Fatores de Transcrição/metabolismo , Biologia de Sistemas , Fator de Transferência/metabolismo , Artrite Reumatoide/metabolismo , Fibroblastos/metabolismo , Proliferação de Células/genética , Linhagem Celular , Fator de Crescimento Transformador beta/metabolismo , Células Cultivadas , Membrana Sinovial/metabolismo
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