ABSTRACT
La deficiencia de zinc puede ser un factor mediador en los trastornos del crecimiento fetal en la descendencia de la gestante diabética. Se persiguió como objetivo determinar la influencia de un suplemento con zinc sobre la morfometría externa corporal y craneofacial en fetos de ratas diabéticas con hiperglucemias moderadas. Durante la gestación, ratas diabéticas y controles fueron suplementadas por vía oral con sulfato de zinc (50 mg/kg-pc) o no recibieron tratamiento. Los fetos descendientes del grupo diabético suplementado presentaron niveles similares a los controles en las variables de crecimiento somático determinadas. La suplementación con zinc a ratas diabéticas favoreció el crecimiento intrauterino en los fetos. Los resultados de esta investigación constituyen aportes para dilucidar los requerimientos de zinc que permitan prevenir los trastornos del crecimiento fetal en la descendencia de gestantes diabéticas.
Zinc deficiency may be a mediating factor in fetal growth disorders in the offspring of diabetic pregnant women. The objective was to determine the influence of a zinc supplement on external body and craniofacial morphometry in diabetic rat fetuses with moderate hyperglycemia. During gestation, diabetic and control rats were orally supplemented with zinc sulphate (50 mg/kg bw) or received no treatment. The fetuses descendants of the supplemented diabetic group had levels similar to the control ones in the determined somatic growth variables. Zinc supplementation to diabetic rats favoured intrauterine growth in fetuses. The results of this research constitute a contribution to elucidate zinc requirements that allow preventing fetal growth disorders in the offspring of diabetic pregnant women.
Subject(s)
Diabetes Mellitus, Experimental , Zinc , Fetal Growth RetardationABSTRACT
Aims: To investigate whether bioceramicsealers induce a lower incidence and intensity of postoperative pain compared to other sealers. Materials and Methods: Six electronic databases were searched for studies published up to April 2022, following the PICOS strategy: (P) adult patients undergoing root canal treatment or retreatment; (I) root canal filling using bioceramic sealer; (C) root canal filling using other types of sealers; (O) Primary: postoperative pain incidence and/or intensity; Secondary: number of medication intake; (S) randomizedclinical trials. Risk of bias assessment was performed with the revised Cochrane risk of bias tools for randomized trials (RoB 2). Overall certainty of evidence was assessed through the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) tool. Results: Ten studies were included. Eight studies had a low risk of bias, and two had some concerns risk. Meta-analyses showed no differences regarding postoperative pain intensity and incidence between bioceramic sealers and AH Plus. Number of medication intake seemed to be associated to the preoperative diagnosis. Zinc oxide-eugenol sealer demonstrated an intense postoperative pain compared to bioceramic sealers and AH Plus. GRADE analysis showed a low certainty of evidence for all outcomes. Conclusions: There seem to be no differences between bioceramic sealers and AH Plus regarding postoperative pain intensity and incidence. Number of medication intake seem to be associated to the preoperative diagnosis. Zinc oxide-eugenol evoked a more pronounced postoperative pain.
ABSTRACT
Background & objectives: During the COVID-19 pandemic, the death rate was reportedly 5-8 fold lower in India which is densely populated as compared to less populated western countries. The aim of this study was to investigate whether dietary habits were associated with the variations in COVID-19 severity and deaths between western and Indian population at the nutrigenomics level. Methods: In this study nutrigenomics approach was applied. Blood transcriptome of severe COVID-19 patients from three western countries (showing high fatality) and two datasets from Indian patients were used. Gene set enrichment analyses were performed for pathways, metabolites, nutrients, etc., and compared for western and Indian samples to identify the food- and nutrient-related factors, which may be associated with COVID-19 severity. Data on the daily consumption of twelve key food componentsacross four countries were collected and a correlation between nutrigenomics analyses and per capita daily dietary intake was investigated. Results: Distinct dietary habits of Indians were observed, which may be associated with low death rate from COVID-19. Increased consumption of red meat, dairy products and processed foods by western populations may increase the severity and death rate by activating cytokine storm-related pathways, intussusceptive angiogenesis, hypercapnia and enhancing blood glucose levels due to high contents of sphingolipids, palmitic acid and byproducts such as CO2 and lipopolysaccharide (LPS). Palmitic acid also induces ACE2 expression and increases the infection rate. Coffee and alcohol that are highly consumed in western countries may increase the severity and death rates from COVID-19 by deregulating blood iron, zinc and triglyceride levels. The components of Indian diets maintain high iron and zinc concentrations in blood and rich fibre in their foods may prevent CO2 and LPS-mediated COVID-19 severity. Regular consumption of tea by Indians maintains high high-density lipoprotein (HDL) and low triglyceride in blood as catechins in tea act as natural atorvastatin. Importantly, regular consumption of turmeric in daily food by Indians maintains strong immunity and curcumin in turmeric may prevent pathways and mechanisms associated with SARS-CoV-2 infection and COVID-19 severity and lowered the death rate. Interpretation & conclusions: Our results suggest that Indian food components suppress cytokine storm and various other severity related pathways of COVID-19 and may have a role in lowering severity and death rates from COVID-19 in India as compared to western populations. However, large multi-centered case?control studies are required to support our current findings.
ABSTRACT
Aims@#Edible coatings developed from biodegradable materials such as starch and zinc oxide nanoparticles (ZnO-NPS) are efficient antimicrobials that could be used as a food additive to reduce the bacterial load on the food surface. Therefore, this study was aimed to examine the effect of chemical and green synthesized ZnO-NPS with different concentrations on the survival of Escherichia coli and Staphylococcus aureus in fish fillets during chilling storage at 4 ± 1°C.@*Methodology and results@#ZnO-NPS were chemically prepared by mixing zinc acetate dihydrate with sodium hydroxide. Lavandula officinalis was used for the green synthesis of ZnO-NPS. The sterile biodegradable coating containing 2 and 5% of both chemically and green synthesized ZnO-NPS were made using starch, gelatin, xanthan gum and glycerol. Different bacterial cocktail strains of both E. coli and S. aureus were inoculated onto Tilapia fillet samples. The coating solution with different antimicrobials was aseptically spread in Tilapia fillets and examined periodically within two days intervals for the survival of S. aureus and E. coli during chilling at 4 ± 1 °C. Both chemically and plantsynthesized ZnO-NPS reduced the growth of both S. aureus and E. coli by about 3.7 log10 CFU/cm2 of Tilapia fillet. The incorporation of L. officinalis increased the antibacterial activity of ZnO-NPS. Staphylococcus aureus was more sensitive than E. coli for both chemically and plant-synthesized ZnO-NPS. Moreover, zinc oxide biodegradable coating extended the shelf-life of chilled Tilapia fillets by about 4 days.@*Conclusion, significance and impact of study@#The results of the current study demonstrated the incorporation of L. officinalis into ZnO-NPS biodegradable coating which may be promising in reducing microbial growth on food surfaces.
Subject(s)
Seafood , Zinc Oxide , Staphylococcus aureus , Escherichia coliABSTRACT
OBJECTIVE To investigate the efficacy and safety of different doses of zinc in the treatment of diarrhea in children， and to provide a reference for clinical safe and rational drug use. METHODS Retrieved from PubMed， Cochrane Library， Embase database， randomized controlled trials about zinc （zinc group） versus placebo or conventional treatment （control group） in the treatment of diarrhea in children were collected from the inception to October 2022. Then， the quality of the included literature was evaluated by the Cochrane Handbook 6.0， and meta-analysis and sensitivity analysis were performed by RevMan 5.3 software. RESULTS Finally， 25 RCTs were included， with a total of 8 618 children. The results of meta-analysis showed that in terms of duration of diarrhea， in zinc ＜20 mg group， the zinc group was significantly shorter than the control group [SMD＝ －0.39， 95%CI（－0.71， －0.08）， P＝0.01]， but in subgroups of ＜6 months old， there was no significant difference between the two groups [SMD＝0.01， 95%CI（－0.10， 0.11）， P＝0.88]. In zinc 20 mg group， the zinc group was significantly shorter than the control group [SMD＝－0.52， 95%CI（－0.80， －0.23）， P＝0.000 3]. In zinc ＞20 mg group， the zinc group was significantly shorter than the control group [SMD＝－0.83， 95%CI（－1.39， －0.27）， P＝0.004]. In zinc ＞10 mg （age ≤12 months） or zinc ＞ 20 mg （age ＞12 months） group （short for “constant dose group”）， the zinc group was significantly shorter than the control group [SMD＝－0.16， 95%CI（－0.27， －0.06）， P＝ 0.003]. In the aspect of diarrhea rate after 7 days of treatment，there was no significant difference in the diarrhea rate after 7 E-mail：lihuiying@etyy.cn days of treatment between the zinc group and the control group： in zinc ＜20 mg group[OR＝1.28，95%CI （0.96，1.70），P＝0.09]， in zinc 20 mg group [OR＝0.40， 95%CI （0.15，1.01），P＝ 0.05]， in constant dose group [OR＝0.64， 95%CI （0.28， 1.44）， P＝0.28]. In terms of vomiting rate， in zinc ＜20 mg group， the vomiting rate of zinc group was significantly higher than that of the control group [OR＝2.13， 95%CI （1.68， 2.70）， P＜0.001]； in constant dose group， vomiting rate of zinc group was significantly higher than that of the control group [OR＝1.84， 95%CI （1.44， 2.34）， P＜0.001]. CONCLUSIONS Zinc can significantly shorten the duration of diarrhea in children（6 months and above）， but low doses can increase the risk of vomiting， which should be taken attention in clinical.
ABSTRACT
@#Traditional titanium implants do not completely meet the clinical requirements because they are bioinert. The surface of titanium implants, modified by strontium ions, can enhance osseointegration and reduce peri-implantitis. In this paper, the biological properties of titanium implant surfaces modified by strontium ions were reviewed. Strontium ions can be coated on the implant surface by hydrothermal treatment, electrochemical deposition, phosphate chemical conversion, flame-spraying, supramolecular self-assembly, magnetron sputtering, laser deposition and alkali etching. Implant surfaces modified by strontium ions can not only promote osteogenesis and early osseointegration but also inhibit bacterial growth and reduce postoperative infections. Even better osseointegration and antibacterial effects can be achieved when strontium ions are incorporated with other elements, such as silver, zinc, gallium, and calcium. However, most of the studies on the use of strontium ion-modified titanium implants are animal experiments and in vitro experiments, and the observation time is short compared with the actual service life of the implants. Thus, the conclusions obtained may be different from the actual clinical application, and the long-term effects need to be studied. In addition, the osteogenic effects of various modification methods also need to be compared. Future research can focus on the following points: ① to find efficient modification methods that can be widely used in the clinic; ②to study how to control the concentration of strontium ions near the implant to exert their biological function and reduce their toxic side effects; and ③ to conduct long-term follow-up clinical trials to observe their osteogenic and antibacterial effects.
ABSTRACT
As confusion mounts over RNA isoforms involved in phenotypic plasticity, aberrant CpG methylation-mediated disruption of alternative splicing is increasingly recognized as a driver of intratumor heterogeneity (ITH). Protease serine 3 (PRSS3), possessing four splice variants (PRSS3-SVs; PRSS3-V1-V4), is an indispensable trypsin that shows paradoxical effects on cancer development. Here, we found that PRSS3 transcripts and their isoforms were divergently expressed in lung cancer, exhibiting opposing functions and clinical outcomes, namely, oncogenic PRSS3-V1 and PRSS3-V2 versus tumor-suppressive PRSS3-V3, by targeting different downstream genes. We identified an intragenic CpG island (iCpGI) in PRSS3. Hypermethylation of iCpGI was mediated by UHRF1/DNMT1 complex interference with the binding of myeloid zinc finger 1 (MZF1) to regulate PRSS3 transcription. The garlic-derived compound diallyl trisulfide cooperated with 5-aza-2'-deoxycytidine to exert antitumor effects in lung adenocarcinoma cells through site-specific iCpGI demethylation specifically allowing MZF1 to upregulate PRSS3-V3 expression. Epigenetic silencing of PRSS3-V3 via iCpGI methylation (iCpGIm) in BALF and tumor tissues was associated with early clinical progression in patients with lung cancer but not in those with squamous cell carcinoma or inflammatory disease. Thus, UHRF1/DNMT1-MZF1 axis-modulated site-specific iCpGIm regulates divergent expression of PRSS3-SVs, conferring nongenetic functional ITH, with implications for early detection of lung cancer and targeted therapies.
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OBJECTIVE@#To investigate the relationship between trace elements in synovial fluid and cartilage and severity of knee osteoarthritis (KOA).@*METHODS@#Patients with KOA who underwent knee arthrocentesis or total knee arthroplasty (TKA) were recruited based on inclusion criteria between June 2021 and December 2021. Synovial fluid samples were obtained during knee arthrocentesis and TKA, and participants were divided into the mild group (grading Ⅰ/Ⅱ) and the severe group (grading Ⅲ/Ⅳ) according to the Kellgren-Lawrence grading (K-L grading). Cartilage samples with different degrees of wear were collected during the TKA from the same patient and were divided into mild wear (0-1 point) and severe wear (2-4 points) groups based on the Pelletier score. The contents of copper (Cu), zinc (Zn), and manganese (Mn) in synovial fluid and cartilage were evaluated by inductively coupled plasma mass spectrometry, and the differences between groups were compared.@*RESULTS@#A total of 33 synovial fluid samples were collected, including 19 specimens from 14 patients who underwent knee arthrocentesis of mild group, with 5 bilateral sides knee arthrocentesis in them, and 14 specimens from 14 TKA patients of severe group. The patients were significantly younger in the mild group than in the severe group ( P<0.05), but there was no significant difference in gender or body mass index between the two groups ( P>0.05). Nineteen pairs of cartilage samples with mild and severe wear were collected from severe KOA patients (K-L grading Ⅲ and Ⅳ), including 9 males and 10 females, with an average age of 70.4 years (range, 58-80 years). The body mass index ranged from 21.2 to 30.7 kg/m 2, with an average of 25.6 kg/m 2. The content of Zn in synovial fluid and cartilage from KOA patients was the highest, followed by Cu, and Mn was the lowest. The Cu content in synovial fluid was significantly higher in the severe group than in the mild group ( P<0.05), and in the severe wear group than in the mild wear group ( P<0.05). There was no significant difference in Zn and Mn content between the two groups ( P>0.05).@*CONCLUSION@#The Cu content increases with the severity of cartilage wear in patients with KOA.
Subject(s)
Male , Female , Humans , Aged , Osteoarthritis, Knee/surgery , Synovial Fluid , Trace Elements , Knee Joint/surgery , Cartilage, Articular , ZincABSTRACT
Znic (Zn) alloys with good cytocompatibility and suitable degradation rate have been a kind of biodegradable metal with great potential for clinical applications. This paper summarizes the biological role of degradable Zn alloy as bone implant materials, discusses the mechanical properties of different Zn alloys and their advantages and disadvantages as bone implant materials, and analyzes the influence of different processing strategies (such as alloying and additive manufacturing) on the mechanical properties of Zn alloys. This paper provides systematic design approaches for biodegradable Zn alloys as bone implant materials in terms of the material selection, product processing, structural topology optimization, and assesses their application prospects with a view to better serve the clinic.
Subject(s)
Orthopedics , Zinc , Alloys , Dental Materials , Prostheses and ImplantsABSTRACT
Abstract Zinc is an essential micronutrient that is required for optimum plant growth. It is present in soil in insoluble forms. Bacterial solubilization of soil unavailable form of Zn into available form, is an emerging approach to alleviate the Zn deficiency for plants and human beings. Zinc solubilizing bacteria (ZSB) could be a substitute for chemical Zn fertilizer. The present study aimed to isolate and characterize bacterial species from the contaminated soil and evaluate their Zn solubilizing potential. Zn resistant bacteria were isolated and evaluated for their MIC against Zn. Among the 13 isolated bacterial strains ZSB13 showed maximum MIC value upto 30mM/L. The bacterial strain with the highest resistance against Zn was selected for further analysis. Molecular characterization of ZSB13 was performed by 16S rRNA gene amplification which confirmed it as Pseudomonas oleovorans. Zn solubilization was determined through plate assay and broth medium. Four insoluble salts (zinc oxide (ZnO), zinc carbonate (ZnCO3), zinc sulphite (ZnS) and zinc phosphate (Zn3(PO4)2) were used for solubilization assay. Our results shows 11 mm clear halo zone on agar plates amended with ZnO. Likewise, ZSB13 showed significant release of Zn in broth amended with ZnCO3 (17 and 16.8 ppm) and ZnO (18.2 ppm). Furthermore, Zn resistance genes czcD was also enriched in ZSB13. In our study, bacterial strain comprising Zn solubilization potential has been isolated that could be further used for the growth enhancement of crops.
Resumo O zinco é um micronutriente essencial necessário para o crescimento ideal das plantas. Ele está presente no solo em formas insolúveis. A solubilização bacteriana da forma indisponível de Zn no solo para a forma disponível é uma abordagem emergente para aliviar a deficiência de Zn em plantas e seres humanos. Bactérias solubilizadoras de zinco (ZSB) podem ser um substituto para fertilizantes químicos de Zn. O presente estudo teve como objetivo isolar e caracterizar espécies bacterianas de solo contaminado e avaliar seu potencial de solubilização de Zn. Bactérias resistentes ao Zn foram isoladas e avaliadas quanto ao seu MIC contra o Zn. Entre as 13 cepas bacterianas isoladas, ZSB13 apresentou valor máximo de MIC de até 30 mM/L. A cepa bacteriana com maior resistência ao Zn foi selecionada para análise posterior. A caracterização molecular de ZSB13 foi realizada por amplificação do gene 16S rRNA que o confirmou como Pseudomonas oleovorans. A solubilização do Zn foi determinada através de ensaio em placa e meio caldo. Quatro sais insolúveis (óxido de zinco (ZnO), carbonato de zinco (ZnCO3), sulfito de zinco (ZnS) e fosfato de zinco (Zn3 (PO4) 2) foram usados para o ensaio de solubilização. Nossos resultados mostram uma zona de halo clara de 11 mm em placas de ágar corrigidas com ZnO. Da mesma forma, ZSB13 mostrou liberação significativa de Zn em caldo alterado com ZnCO3 (17 e 16,8 ppm) e ZnO (18,2 ppm). Além disso, os genes de resistência ao Zn czcD também foram enriquecidos em ZSB13. Em nosso estudo, a cepa bacteriana compreendendo potencial de solubilização de Zn foi isolada e poderia ser usada posteriormente para o aumento do crescimento de safras.
Subject(s)
Humans , Soil Pollutants , Pseudomonas oleovorans , Soil , Soil Microbiology , Zinc , RNA, Ribosomal, 16S/geneticsABSTRACT
Abstract Cisplatin (CP) is used to treat various tumors. A main restriction of cisplatin is nephrotoxicity. This study aimed to evaluate the protective effects of ZnONPs on cisplatin-induced oxidative stress and rat kidney tissue damage. Eighty adult male Wistar rats (250g-270g) were divided into ten groups: Control (CON), Sham (SH), Bulk ZnO (BZnO), Chemical ZnONPs (ChZnONPs), Green ZnONPs (GrZnONPs), Cisplatin (CP), Cisplatin+BulkZnO (CP+BZnO), Cisplatin+Green ZnONPs (CP+GrZnONPs), Cisplatin+Chemical ZnONPs (CP+ChZnONPs), Cisplatin+Explant (CP+EX). CP was i.p administered 5mg/kg/week and BZnO, ChZnONPs and GrZnONPs were i.p administered at a dose of 5mg/kg/day. After 30 days of the treatment, the expression of apoptosis/anti apoptosis related genes oxidant/antioxidant factors and histological changes in the were studied. The CP-treated group showed a decrease in body weight, while the Co-administration of ZGNPs to CP-treated rats showed a significant increase compared to the CP group. The results showed that the increased mRNA level of bax, MDA and the decreased mRNA level of bcl2, SOD and CAT activities in kidney of CP group were improved when animals were treated with ZnO NPs. Our results showed that GrZnONPs, ChZnONPs and BZnO had the potential to protect against oxidative stress and cisplatin-induced neurotoxicity that this protective effect was more evident in GrZnONPs.
Subject(s)
Animals , Male , Rats , Zinc Oxide/adverse effects , Oxidative Stress , Nanoparticles/classification , Kidney/abnormalities , HistologyABSTRACT
Aim: To evaluate the resistance of the union between a glass fiber post and radicular dentine after cleaning the root with 17% EDTA and filling with different endodontic cements. Methods: Forty uniradicular bovine incisors were removed to obtain root lengths of 18 mm. Endodontic treatment was performed on all roots using different filling cements (zinc oxide and eugenol-based, OZE; cement based on epoxy resin, AH) and cleaning solutions (saline, SA or EDTA), which made it possible to obtain four groups: OZESA, OZEEDTA, AHSA and AHEDTA. Subsequently, 12 mm of filling material was removed from the roots, and they were prepared to receive fiber posts luted with resin cement. To execute the mechanical cycles (2x106 cycles, 90 N, 4 Hz), coronal reconstruction was performed with a silicon matrix. The roots were then sliced (2-mm thick) to perform the push-out test. The results were analyzed using analysis of variance (one factor and two factors) and Tukey's test (α=0,05). Results: Bond strength (Mpa) was significantly higher for OZEEDTA (9,18) and AHEDTA (8,70) than for OZESA (6,06) AHSA (8,7). OZEEDTA also presented the highest values in the cervical region (15,18) but was significantly lower in the apical region (2,99). However, AHEDTA had a homogeneous bond strength in all thirds. Conclusion: Regardless of the endodontic cement used, EDTA was used as an irrigating solution, culminating in a higher bond strength between the glass fiber post and dentin
Subject(s)
Animals , Cattle , Zinc Oxide-Eugenol Cement , Efficacy , Edetic Acid , Tooth, Nonvital , EndodonticsABSTRACT
A toxina botulínica é produzida naturalmente pela bactéria anaeróbia gram- positiva Clostridium botulinum, sendo considerada uma neurotoxina com efeitos capazes de reduzir atividades do sistema nervoso parassimpático, principalmente em relação as desordens de movimentos. A alta efetividade e o resultado do efeito de bloqueio na contração da musculatura facial justificam sua aplicação regular na estética, atuando no tratamento e prevenção das rugas e linhas de expressão. Entretanto, para a ação da toxina botulínica é necessário que o Zinco (Zn) exerça a ação no bloqueio da contração muscular através do mecanismo da clivagem no receptor SNAP-25. O objetivo deste trabalho é investigar a correlação do mecanismo de ação da toxina botulínica no bloqueio da contração muscular associado com a suplementação via oral de cápsulas de zinco e fitase, para comprovar a efetividade na durabilidade de bloqueio muscular com TBA. A pesquisa foi realizada através da aplicação de um questionário aleatório para participantes da pesquisa que fazem aplicação de TBA na musculatura facial de ambos os gêneros, com idade acima de 18 anos e que realizam a suplementação prévia de Zn e Fitase para aumentar a durabilidade do efeito da neurotoxina. Em relação aos resultados encontrados observou-se uma mudança significativa na duração do efeito da TBA quando associado a suplementação prévia de Zn e fitase. Dos 44 participantes da pesquisa 22,7% responderam que ficaram satisfeitos com os efeitos da TBA sem suplementação prévia, enquanto 93,2% afirmaram no questionário uma duração maior do bloqueio muscular quando suplementaram previamente com Zn e Fitase. Conclui-se que a suplementação de Zn e fitase previamente a aplicação da TBA tem resultado positivo na durabilidade do bloqueio da contração da musculatura facial, o que desperta grande interesse na área da estética aplicada, sugerindo novas terapias complementares que possam assegurar a satisfação dos pacientes que são adeptos a este procedimento estético.
Botulinum toxin is produced naturally by the anaerobic gram-positive bacterium Clostridium botulinum, being considered a neurotoxin with effects capable of reducing activities of the parasympathetic nervous system, mainly in relation to movement disorders. The high effectiveness and the result of the blocking effect in the contraction of the facial musculature justify its regular application in aesthetics, acting in the treatment and prevention of wrinkles and lines of expression. However, for the action of botulinum toxin it is necessary that Zinc (Zn) exerts the action in blocking muscle contraction through the cleavage mechanism in the SNAP-25 receptor. The objective of this work is to investigate the correlation of the mechanism of action of botulinum toxin in the blocking of muscle contraction associated with oral supplementation of zinc capsules and phytase, to prove the effectiveness in the durability of muscle block with TBA.The research was carried out by applying a random questionnaire to research participants who apply TBA in the facial musculature of both genders, aged over 18 years and who perform the previous Zn and Fitase supplementation to increase the durability of the effect of neurotoxin. In relation to the results found, a significant change in the duration of the effect of TBA was observed when associated with previous Zn and phytase supplementation. Of the 44 participants in the survey, 22.7% responded that they were satisfied with the effects of ABR without prior supplementation, while 93.2% stated in the questionnaire a longer duration of muscle block when they had previously supplemented with Zn and Fitase. It is concluded that the Zn and phytase supplementation prior to the application of the TBA has positive result in the durability of the blockage of the contraction of the facial musculature, which arouses great interest in the area of applied aesthetics, suggesting new complementary therapies that can ensure the satisfaction of patients who are adherents to this aesthetic procedure.
La toxina botulínica es producida naturalmente por la bacteria anaeróbica Gram-positiva Clostridium botulinum y se considera una neurotoxina con efectos capaces de reducir las actividades del sistema nervioso parasiinfático, principalmente en relación con los trastornos del movimiento. La alta eficacia y el resultado del efecto bloqueante sobre la contracción de los músculos faciales justifican su aplicación regular en estética, actuando en el tratamiento y prevención de arrugas y líneas de expresión. Mientras tanto, para la acción de la toxina botulínica, es necesario que Zinc (Zn) ejerza la acción de bloqueo de la contracción muscular por el mecanismo de escisión del receptor SNAP-25. El objetivo de este trabajo es investigar la correlación del mecanismo de acción de la toxina botulínica en el bloqueo de la contracción muscular asociada a la suplementación oral de cápsulas de zinc y fitasa, para probar la eficacia de la durabilidad del bloqueo muscular con TBA. La investigación se realizó aplicando un cuestionario aleatorio a los participantes en la investigación que aplican TBA a los músculos faciales de ambos géneros mayores de 18 años y que realizan el suplemento previo de Zn y Fitase para aumentar la durabilidad del efecto neurotoxina. En relación con los resultados hallados, se observó un cambio significativo en la duración del efecto del TBA cuando se asoció con el suplemento de Zn y fitasa. De los 44 participantes en la investigación, el 22,7% respondió que estaban satisfechos con los efectos de la TBA sin suplementos previos, mientras que el 93,2% declaró en el cuestionario una larga duración del bloqueo muscular cuando se les había suplementado previamente con Zn y Fitase. Se concluye que la suplementación con Zn y fitasa previa a la aplicación del TBA ha producido un resultado positivo en la durabilidad del bloqueo de contracción muscular facial, que despierta gran interés en el área de estética aplicada, sugiriendo nuevas terapias complementarias que puedan garantizar la satisfacción de los pacientes que son adeptivos a este procedimiento estético.
ABSTRACT
A toxina botulínica é produzida naturalmente pela bactéria anaeróbia gram- positiva Clostridium botulinum, sendo considerada uma neurotoxina com efeitos capazes de reduzir atividades do sistema nervoso parassimpático, principalmente em relação as desordens de movimentos. A alta efetividade e o resultado do efeito de bloqueio na contração da musculatura facial justificam sua aplicação regular na estética, atuando no tratamento e prevenção das rugas e linhas de expressão. Entretanto, para a ação da toxina botulínica é necessário que o Zinco (Zn) exerça a ação no bloqueio da contração muscular através do mecanismo da clivagem no receptor SNAP-25. O objetivo deste trabalho é investigar a correlação do mecanismo de ação da toxina botulínica no bloqueio da contração muscular associado com a suplementação via oral de cápsulas de zinco e fitase, para comprovar a efetividade na durabilidade de bloqueio muscular com TBA. A pesquisa foi realizada através da aplicação de um questionário aleatório para participantes da pesquisa que fazem aplicação de TBA na musculatura facial de ambos os gêneros, com idade acima de 18 anos e que realizam a suplementação prévia de Zn e Fitase para aumentar a durabilidade do efeito da neurotoxina. Em relação aos resultados encontrados observou-se uma mudança significativa na duração do efeito da TBA quando associado a suplementação prévia de Zn e fitase. Dos 44 participantes da pesquisa 22,7% responderam que ficaram satisfeitos com os efeitos da TBA sem suplementação prévia, enquanto 93,2% afirmaram no questionário uma duração maior do bloqueio muscular quando suplementaram previamente com Zn e Fitase. Conclui-se que a suplementação de Zn e fitase previamente a aplicação da TBA tem resultado positivo na durabilidade do bloqueio da contração da musculatura facial, o que desperta grande interesse na área da estética aplicada, sugerindo novas terapias complementares que possam assegurar a satisfação dos pacientes que são adeptos a este procedimento estético.
Botulinum toxin is produced naturally by the gram-positive anaerobic bacterium Clostridium botulinum, and is considered a neurotoxin with effects capable of reducing activities of the parasympathetic nervous system, especially in relation to movement disorders. The high effectiveness and the result of the blocking effect on the contraction of facial muscles justify its regular application in aesthetics, acting in the treatment and prevention of wrinkles and expression lines. However, for the action of botulinum toxin it is necessary that the Zinc (Zn) exerts the action of blocking muscle contraction through the cleavage mechanism in the SNAP-25 receptor. The objective of this study is to investigate the correlation of the mechanism of action of botulinum toxin in blocking muscle contraction associated with oral supplementation of zinc capsules and phytase, to prove the effectiveness in the durability of muscle blockade with TBA. The research was carried out by applying a randomized questionnaire to research participants who apply TBA to the facial muscles of both genders, over 18 years of age, and who perform prior supplementation of Zn and Phytase to increase the durability of the neurotoxin effect. In relation to the results found it was observed a significant change in the duration of the effect of TBA when associated with prior supplementation of Zn and phytase. Of the 44 research participants 22.7% responded that they were satisfied with the effects of TBA without prior supplementation, while 93.2% stated in the questionnaire a longer duration of muscle blockade when previously supplemented with Zn and Phytase. We conclude that the supplementation of Zn and phytase previously to the application of TBA has a positive result in the durability of the blockade of facial muscle contraction, which arouses great interest in the area of applied esthetics, suggesting new complementary therapies that can ensure the satisfaction of patients who are adept at this esthetic procedure.
La toxina botulínica es producida naturalmente por la bacteria anaeróbica Gram-positiva Clostridium botulinum y se considera una neurotoxina con efectos capaces de reducir las actividades del sistema nervioso parasiinfático, principalmente en relación con los trastornos del movimiento. La alta eficacia y el resultado del efecto bloqueante sobre la contracción de los músculos faciales justifican su aplicación regular en estética, actuando en el tratamiento y prevención de arrugas y líneas de expresión. Mientras tanto, para la acción de la toxina botulínica, es necesario que Zinc (Zn) ejerza la acción de bloqueo de la contracción muscular por el mecanismo de escisión del receptor SNAP-25. El objetivo de este trabajo es investigar la correlación del mecanismo de acción de la toxina botulínica en el bloqueo de la contracción muscular asociada a la suplementación oral de cápsulas de zinc y fitasa, para probar la eficacia de la durabilidad del bloqueo muscular con TBA. La investigación se realizó aplicando un cuestionario aleatorio a los participantes en la investigación que aplican TBA a los músculos faciales de ambos géneros mayores de 18 años y que realizan el suplemento previo de Zn y Fitase para aumentar la durabilidad del efecto neurotoxina. En relación con los resultados hallados, se observó un cambio significativo en la duración del efecto del TBA cuando se asoció con el suplemento de Zn y fitasa. De los 44 participantes en la investigación, el 22,7% respondió que estaban satisfechos con los efectos de la TBA sin suplementos previos, mientras que el 93,2% declaró en el cuestionario una larga duración del bloqueo muscular cuando se les había suplementado previamente con Zn y Fitase. Se concluye que la suplementación con Zn y fitasa previa a la aplicación del TBA ha producido un resultado positivo en la durabilidad del bloqueo de contracción muscular facial, que despierta gran interés en el área de estética aplicada, sugiriendo nuevas terapias complementarias que puedan garantizar la satisfacción de los pacientes que son adeptivos a este procedimiento estético.
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Resumen ANTECEDENTES: Cuando la mujer embarazada tiene déficit de zinc, esta carencia puede ser un factor que contribuya a la aparición de alteraciones en el feto, como las malformaciones congénitas y otros trastornos del desarrollo. OBJETIVO: Identificar los aspectos relevantes del estado actual del conocimiento de las complicaciones de la diabetes en la mujer embarazada y el déficit de zinc en el feto. Además, explicar cuál es la posible consecuencia de la deficiencia del micronutriente, entre otras causas moleculares subyacentes. METODOLOGÍA: Revisión bibliográfica efectuada en las bases de datos de Google, PubMed-Medline y SciELO de artículos publicados en inglés o español del año 2012 al 2022, con los MeSH: Maternal diabetes; Hyperglycemia; Zinc deficiency; Congenital malformations; Epigenetics; con su correspondiente traducción al español. Criterios de selección: artículos originales, estudios prospectivos, de revisión bibliográfica, metanálisis, capítulos de libro y reportes de la Asociación Americana de Diabetes (ADA) y la Asociación Latinoamericana de Diabetes (ALAD). RESULTADOS: Se localizaron 187 artículos de los que se excluyeron 126 no adecuados para el tema de la revisión, duplicados o en idioma diferente al inglés y español. CONCLUSIONES: El análisis bibliográfico evidenció que los trastornos metabólicos provocados por la hiperglucemia de la madre, el déficit de zinc, la alteración de su homeostasis y su interacción con el desequilibrio redox, la inflamación de bajo grado, la activación apoptósica y las modificaciones epigenéticas producen un ambiente intrauterino adverso que condiciona la aparición de malformaciones y otros trastornos del desarrollo en la descendencia.
Abstract BACKGROUND: When pregnant women are deficient in zinc, this deficiency may be a contributing factor to foetal disorders, such as congenital malformations and other developmental disorders. OBJECTIVE: To identify the relevant aspects of the current state of knowledge of the complications of diabetes in pregnant women and zinc deficiency in the foetus. In addition, to explain the possible consequences of micronutrient deficiency, among other underlying molecular causes. METHODOLOGY: Bibliographic review carried out in Google, PubMed-Medline and SciELO databases of articles published in English or Spanish from 2012 to 2022, with the MeSH: Maternal diabetes; Hyperglycemia; Zinc deficiency; Congenital malformations; Epigenetics; with their corresponding translation into Spanish. Selection criteria: original articles, prospective studies, literature reviews, meta-analyses, book chapters and reports of the American Diabetes Association (ADA) and the Latin American Diabetes Association (ALAD). RESULTS: 187 articles were located of which 126 unsuitable for the review topic, duplicates or in language other than English and Spanish were excluded. CONCLUSIONS: The literature review evidenced that metabolic disorders caused by maternal hyperglycemia, zinc deficiency, alteration of its homeostasis and its interaction with redox imbalance, low-grade inflammation, apoptotic activation and epigenetic modifications produce an adverse intrauterine environment that conditions the appearance of malformations and other developmental disorders in the offspring.
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Abstract Objective It is well known that female infertility is multifactorial. Therefore, we aimed to compare the effects of thyroid dysfunction, vitamin deficiency, and microelement deficiency in fertile and infertile patients. Materials and Methods Between May 1st, 2017, and April 1st, 2019, we conducted a retrospective case-control study with of 380 infertile and 346 pregnant patients (who normally fertile and able to conceive spontaneously). The fertile patients were selected among those who got pregnant spontaneously without treatment, had a term birth, and did not have systemic or obstetric diseases. The levels of thyroid-stimulating hormone (TSH), triiodothyronine (T3), thyroxine (T4), anti-thyroid peroxidase (anti-TPO), vitamin D, vitamin B12, folic acid, ferritin, and zinc of both groups were compared. Results There was no difference between patients in the infertile and pregnant groups in terms of low normal and high serum T3 and T4 levels (p = 0.938; p > 0.05) respectively, nor in terms of normal and high anti-TPO levels (p = 0.182; p > 0.05) respectively. There was no significant difference regarding patients with low, insufficient, and sufficient vitamin D levels in the infertile and pregnant groups (p = 0.160; p >0.05) respectively. The levels of folic acid, ferritin, and zinc of the infertile group were significantly lower than those of the pregnant group. Conclusion The serum levels of folic acid, ferritin, and zinc in infertile patients presenting to our outpatient clinic were lower than those o the fertile patients.
Resumo Objetivo Sabe-se que a infertilidade feminina é multifatorial. Portanto, nosso objetivo foi comparar os efeitos da disfunção tireoidiana, deficiência de vitaminas e deficiência de microelementos em pacientes férteis e inférteis. Materiais e Métodos Entre 1° de maio de 2017 e 1° de abril de 2019, realizamos um estudo retrospectivo caso-controle com 380 pacientes inférteis e 346 grávidas (normalmente férteis e capazes de conceber espontaneamente). As pacientes férteis foram selecionadas entre aquelas que engravidaram espontaneamente sem tratamento, tiveram parto a termo e não apresentavam doenças sistêmicas ou obstétricas. Os níveis de hormônio estimulante da tireoide (TSH), triiodotironina (T3), tiroxina (T4), antitireoide peroxidase (anti-TPO), vitamina D, vitamina B12, ácido fólico, ferritina e zinco de ambos os grupos foram comparados. Resultados Não houve diferença entre as pacientes dos grupos inférteis e gestantes em relação aos níveis altos de sérumT3 e T4 normais baixos e altos (p = 0,938; p > 0,05), respectivamente nem aos níveis normais e altos de anti-TPO (p = 0,182; p > 0,05), respectivamente. Não houve diferença significativa em relação aos pacientes com níveis baixos, insuficientes e suficientes de vitamina D nos grupos inférteis e gestantes (p = 0,160; p > 0,05), respectivamente. Os níveis de ácido fólico, ferritina e zinco do grupo infértil foram significativamente menores do que os do grupo grávida. Conclusão Os níveis de sérum de ácido fólico, ferritina e zinco nas pacientes inférteis atendidas em nosso ambulatório foram menores do que nas pacientes férteis.
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Humans , Female , Thyroid Hormones , Vitamin B 12 , Vitamin D , Zinc , Ferritins , Folic Acid , Infertility, FemaleABSTRACT
Abstract The antimicrobial activity of metallic nanoparticles (NPs) has been confirmed to fight a broad spectrum of microorganisms, through antimicrobial effects that are amplified when these particles are irradiated with light of the proper wavelength. This is the first study to use phytoconjugated Zinc oxide (ZnO) NPs containing traces of active biomolecules derived from Emblica officinalis (E. officinalis) plant extract in antimicrobial photocatalysis (PCT) during non-surgical periodontal therapy. Objectives This study aimed to evaluate the effects of repeated PCT application in the treatment of periodontitis, using a gel containing bio-hydrothermally synthesized ZnO NPs and visible light as an adjunct to scaling and root planing (SRP). Methodology In total, 16 systemically healthy volunteers with stage 3 grade B generalized periodontitis were recruited for this prospective double blind, randomized placebo-controlled trial. After receiving SRP, the subjects received the following interventions in a split-mouth design at baseline, 1 week and 1 month: Group 1 - Placebo gel + Sham PCT; Group 2 - Nano ZnO gel + Sham PCT; Group 3 - Placebo gel + PCT; and Group 4 - Nano ZnO gel + PCT. The site-specific profile of Porphyromonas gingivalis in the subgingival plaque and clinical parameters (Plaque Index, Gingival Index, Gingival Bleeding Index, Probing pocket Depth and Clinical Attachment Level) were assessed at baseline, 1 month and 3 months. Results All interventions tested caused participants' clinical and microbiological parameters to generally improve after 3 months. Subjects who received the Nano ZnO gel + PCT combination showed a sustained and progressive improvement in their treatment outcomes, a result that presented statistically significant differences from the outcomes obtained through the remaining interventions, at all time points during the study period. Conclusions The repeated application of PCT using bio-hydrothermally synthesized ZnO NPs can effectively complement SRP in the non-surgical treatment of Periodontitis.
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Resumo Objetivo Identificar se há diferença na concentração plasmática e eritrocitária de zinco na pessoa idosa com e sem a doença de Alzheimer. Métodos Estudo transversal com grupo comparação, realizado com pessoas idosas com e sem doença de Alzheimer, pareadas por sexo, escolaridade e idade. A concentração de zinco foi medida através de espectrofotometria de absorção atômica em forno grafite. Resultados Total de 102 pessoas, 68 no grupo saudável (NDA-g) e 34 o grupo com doença (DA-g). O grupo DA-g apresentou menores concentrações plasmáticas e maior frequência no primeiro quartil para concentrações intraeritrocitárias de zinco. As concentrações plasmáticas e eritrocitárias não apresentaram correlação com tempo de diagnóstico e a idade em ambos os grupos. Na análise de regressão logística, a concentração plasmática esteve associada à DA-g (OR=0,964; p=0,028). Conclusão Pessoas idosas com doença de Alzheimer apresentam menores concentrações plasmáticas e eritrocitárias de zinco.
Abstract Objective To identify whether there is a difference in plasma and erythrocyte zinc concentration in older adults with and without Alzheimer's disease. Methods Crosssectional study with a comparative group, conducted with older adults with and without Alzheimer's disease, matched by sex, education, and age. Zinc concentration was measured by atomic absorption spectrophotometry in a graphite furnace. Results There were 102 people, 68 in the healthy group (NDA-g) and 34 in the group with disease (AD-g). The AD-g group had lower plasma zinc concentrations and higher frequency in the first quartile for intraerythrocyte zinc concentrations. Plasma and erythrocyte concentrations did not correlate with the time of diagnosis and age in both groups. In the logistic regression analysis, plasma concentration was associated with AD-g (OR=0.964; p=0.028). Conclusion Older people with Alzheimer's disease have lower plasma and erythrocyte zinc concentrations.
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Abstract Leishmaniasis is transmitted by sandfly which carries the intracellular protozoa in their midgut. Among visceral, cutaneous and mucocutaneous leishmaniasis, visceral type that is caused by Leishmania donovani is the most lethal one. Findings of leishmanial structure and species took place in 19th century and was initiated by Donovan. Leishmaniasis is still a major concern of health issues in many endemic countries in Asia, Africa, the Americas, and the Mediterranean region. Worldwide1.5-2 million new cases of cutaneous leishmaniasis and 500,000 cases of visceral leishmaniasis are reported each year. Leishmaniasis is endemic in nearly 90 countries worldwide and close to 12 million new cases of leishmaniasis are reported worldwide annually. Studies on antileishmanial drug development is of major concern as leishmaniasis are the second largest parasitic killer in the world and the available drugs are either toxic or costly. The major surface GP63 protease, also known as Zinc- metalloproteases present on the surface of leishmanial promastigotes, can be targeted for drug development. Protease inhibitors targeting such surface proteases show promising results. Different protease inhibitors have been isolated from marine actinobacteria against many infectious diseases. Metabolites produced by these actinobacteria may have greater importance for the discovery and development of new antileishmanial drugs. Hence, this review discusses the background, current situation, treatment, and protease inhibitors from marine actinobacteria for drug development against GP63 molecules.
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Zinc is an essential micronutrient that is required for optimum plant growth. It is present in soil in insoluble forms. Bacterial solubilization of soil unavailable form of Zn into available form, is an emerging approach to alleviate the Zn deficiency for plants and human beings. Zinc solubilizing bacteria (ZSB) could be a substitute for chemical Zn fertilizer. The present study aimed to isolate and characterize bacterial species from the contaminated soil and evaluate their Zn solubilizing potential. Zn resistant bacteria were isolated and evaluated for their MIC against Zn. Among the 13 isolated bacterial strains ZSB13 showed maximum MIC value upto 30mM/L. The bacterial strain with the highest resistance against Zn was selected for further analysis. Molecular characterization of ZSB13 was performed by 16S rRNA gene amplification which confirmed it as Pseudomonas oleovorans. Zn solubilization was determined through plate assay and broth medium. Four insoluble salts (zinc oxide (ZnO), zinc carbonate (ZnCO3), zinc sulphite (ZnS) and zinc phosphate (Zn3(PO4)2) were used for solubilization assay. Our results shows 11 mm clear halo zone on agar plates amended with ZnO. Likewise, ZSB13 showed significant release of Zn in broth amended with ZnCO3 (17 and 16.8 ppm) and ZnO (18.2 ppm). Furthermore, Zn resistance genes czcD was also enriched in ZSB13. In our study, bacterial strain comprising Zn solubilization potential has been isolated that could be further used for the growth enhancement of crops.
O zinco é um micronutriente essencial necessário para o crescimento ideal das plantas. Ele está presente no solo em formas insolúveis. A solubilização bacteriana da forma indisponível de Zn no solo para a forma disponível é uma abordagem emergente para aliviar a deficiência de Zn em plantas e seres humanos. Bactérias solubilizadoras de zinco (ZSB) podem ser um substituto para fertilizantes químicos de Zn. O presente estudo teve como objetivo isolar e caracterizar espécies bacterianas de solo contaminado e avaliar seu potencial de solubilização de Zn. Bactérias resistentes ao Zn foram isoladas e avaliadas quanto ao seu MIC contra o Zn. Entre as 13 cepas bacterianas isoladas, ZSB13 apresentou valor máximo de MIC de até 30 mM/L. A cepa bacteriana com maior resistência ao Zn foi selecionada para análise posterior. A caracterização molecular de ZSB13 foi realizada por amplificação do gene 16S rRNA que o confirmou como Pseudomonas oleovorans. A solubilização do Zn foi determinada através de ensaio em placa e meio caldo. Quatro sais insolúveis (óxido de zinco (ZnO), carbonato de zinco (ZnCO3), sulfito de zinco (ZnS) e fosfato de zinco (Zn3 (PO4) 2) foram usados para o ensaio de solubilização. Nossos resultados mostram uma zona de halo clara de 11 mm em placas de ágar corrigidas com ZnO. Da mesma forma, ZSB13 mostrou liberação significativa de Zn em caldo alterado com ZnCO3 (17 e 16,8 ppm) e ZnO (18,2 ppm). Além disso, os genes de resistência ao Zn czcD também foram enriquecidos em ZSB13. Em nosso estudo, a cepa bacteriana compreendendo potencial de solubilização de Zn foi isolada e poderia ser usada posteriormente para o aumento do crescimento de safras.