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BACKGROUND: Biofortification represents a promising and sustainable strategy for mitigating global nutrient deficiencies. However, its successful implementation poses significant challenges. Among staple crops, wheat emerges as a prime candidate to address these nutritional gaps. Wheat biofortification offers a robust approach to enhance wheat cultivars by elevating the micronutrient levels in grains, addressing one of the most crucial global concerns in the present era. MAIN TEXT: Biofortification is a promising, but complex avenue, with numerous limitations and challenges to face. Notably, micronutrients such as iron (Fe), zinc (Zn), selenium (Se), and copper (Cu) can significantly impact human health. Improving Fe, Zn, Se, and Cu contents in wheat could be therefore relevant to combat malnutrition. In this review, particular emphasis has been placed on understanding the extent of genetic variability of micronutrients in diverse Triticum species, along with their associated mechanisms of uptake, translocation, accumulation and different classical to advanced approaches for wheat biofortification. CONCLUSIONS: By delving into micronutrient variability in Triticum species and their associated mechanisms, this review underscores the potential for targeted wheat biofortification. By integrating various approaches, from conventional breeding to modern biotechnological interventions, the path is paved towards enhancing the nutritional value of this vital crop, promising a brighter and healthier future for global food security and human well-being.
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Biofortificação , Desnutrição , Micronutrientes , Triticum , Triticum/metabolismo , Triticum/genética , Micronutrientes/metabolismo , Desnutrição/metabolismo , Produtos Agrícolas/genética , Produtos Agrícolas/metabolismo , Zinco/metabolismo , Valor NutritivoRESUMO
BACKGROUND AND OBJECTIVES: ABO-incompatible transplantations allow patients to receive timely transplants. Isoagglutinin titration to ascertain levels of incompatible antibodies in the recipient is important in determining patient selection and transplant survivability. To find out the prevalent trends in India, the largest, first of its kind survey was carried out among the transplant centers regarding their practices in isoagglutinin titration. METHODS: The survey was drafted by a working group of Transfusion and Transplant Immunology specialists from six different centers. Data was obtained via the use of an online questionnaire. RESULTS: Results were categorized into four categories, Hospital information, Titration methodology, Role of transfusion specialists and cut-off titers. Most centers had a well-established solid-organ transplant program with considerable number of ABO-incompatible transplantations. Most centers performed isoagglutinin titration in Transfusion Medicine department. Column Agglutination Technique (CAT) was the most common method, using EDTA blood samples and freshly-prepared in-house pooled cells. Most centers had a turn-around time of less than 12 h. While the policy for ascertaining baseline and threshold titers is well-defined in ABO-incompatible renal transplants, variations from center to center still exist for ABO-incompatible liver transplants. Most centers required a Transfusion Medicine consultation for the patients before such transplants. CONCLUSION: With increasing ABO-incompatible kidney and liver transplants across the country, the role of Transfusion medicine specialists has become vital in pre-conditioning regimes enabling the viability and success of such transplants. This was a unique survey that provided a snapshot of current trends and practices of isoagglutinin titration for ABO-incompatible transplants in India.
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Transplante de Rim , Transplante de Fígado , Transplante de Órgãos , Humanos , Incompatibilidade de Grupos Sanguíneos , Transplante de Rim/métodos , Rim , Sistema ABO de Grupos SanguíneosRESUMO
INTRODUCTION: Anti-D detection and titration plays a major role in RhD negative antenatal cases both, for monitoring maternal as well as fetal status as well as initiation of early therapeutic interventions, such as intra-uterine transfusions (IUT) to improve maternal as well as fetal morbidity and mortality and reduce the adverse effects of haemolytic disease of fetus and newborn (HDFN). We conducted a survey focusing on the policies and procedures of anti-D detection and titration among major tertiary care centres across India. METHODOLOGY: The survey was drafted by a working group of transfusion medicine and immunohematology specialists from six different centres in India. Data were obtained via the use of an online questionnaire. RESULTS: Results were categorised into four categories, Hospital information, immuno-haematological testing methodology, clinical significance of anti-D testing and the role of transfusion medicine specialists. The survey highlighted the modalities as well as the methodologies of anti-D detection and titration in antenatal women across different major tertiary care centres in India. CONCLUSION: This survey provided a unique snapshot of the prevalent methodologies being employed by major tertiary care centres across the country for detection and titration of anti-D levels as well as the important role it plays in the therapy of affected antenatal women to minimise adverse effects on the fetus.
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Imunoglobulina rho(D) , Humanos , Índia , Feminino , Gravidez , Inquéritos e Questionários , Imunoglobulina rho(D)/sangue , Isoanticorpos/sangue , Centros de Atenção Terciária , Eritroblastose Fetal/sangue , Eritroblastose Fetal/terapia , Eritroblastose Fetal/diagnóstico , Recém-NascidoRESUMO
BACKGROUND: Several autoimmune disorders have been reported to be related with COVID infection. In continuation to these autoimmune phenomenon, autoimmune hemolytic anaemia (AIHA) also has been noted in COVID infected patients. The aim of the study was to find out the prevalence of red cell alloimmunization, ABO discrepancy and positive direct antiglobulin test (DAT) results in COVID infected patients hospitalised in a tertiary care centre in North India. METHODOLOGY: This was a retrospective observational study done from July 2020 to June 2021. All symptomatic patients admitted to ICU tested positive for SARS CoV-2 whose blood samples were received in the immunohematology laboratory of department of Transfusion Medicine for determination of blood group and issue of packed red cells, and found to have positive antibody screen, blood group discrepancy and positive DAT results, were included in the study. RESULTS: A total of 10,568 tests were run, out of which 4437 were for determination of blood group, 5842 were for antibody screen and 289 were for direct antiglobulin test. Included in this study were 146 patients who either had blood group discrepancy, or had a positive antibody screen or had a positive DAT. Out of 115 positive antibody screen, 66 patients had only alloantibodies, 44 patients had only autoantibodies while only 5 patients had both auto as well as alloantibodies. Total number of positive DAT cases was 50 (50/289 = 17.3 %). There were 26 ABO discrepancies (26/4437 =0.58 %) found. CONCLUSION: Our results also indicate that there is rise in rate of alloimmunization and DAT positivity among COVID patients.
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Anemia Hemolítica Autoimune , Antígenos de Grupos Sanguíneos , COVID-19 , Humanos , Isoanticorpos , Anemia Hemolítica Autoimune/epidemiologia , Eritrócitos , Teste de Coombs/métodosRESUMO
BACKGROUND: Therapeutic apheresis procedures are becoming an increasingly integral part of modern medical practice, be it as a part of therapy or pre-conditioning regimes for solid organ transplants. In our center, we follow the American Society for Apheresis (ASFA) guidelines for categorizing these procedures. However, lack of a centralized registry for therapeutic apheresis in India, lack of consolidated data as well as a resource-constrained setting prevent it from being utilized to its full potential. STUDY DESIGN AND METHODS: This study was a retrospective analysis of therapeutic plasma exchange (TPE) procedures performed from January 2015 to October 2022 in the Department of Transfusion Medicine at a large tertiary care hospital in North India. All consecutive TPE procedures were included. Overall and specialty-wise scoring for all patients was performed. Mean scores were calculated. RESULTS: A total of 1434 procedures were performed during the study duration of 7 years. These procedures were performed for 284 different patients. Majority of the procedures were referred from nephrology (895 of 1434, 62.4%), followed by neurology, gastroenterology, and liver transplant teams, hematology, critical care, rheumatology, pediatrics, and internal medicine. Complete response, partial response, and no-response were observed in 1077 (75.1%), 201 (14%), and 156 (10.9%) procedures respectively. Only 14 procedures reported adverse effects. DISCUSSION: Increasing effectiveness of TPE in a number of procedures and a variety of indications has broadened its scope, while the small number of adverse events, when supervised by trained Transfusion Medicine physicians has made TPE a more viable and safer alternative to other treatment modalities.
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Remoção de Componentes Sanguíneos , Troca Plasmática , Humanos , Criança , Troca Plasmática/métodos , Estudos Retrospectivos , Remoção de Componentes Sanguíneos/métodos , Plasmaferese , Indução de RemissãoRESUMO
An alga belongs to the multi-pertinent group which can add to a significant sector of environment. They show a prevailing gathering of microorganisms for bioremediation due to their significant capacity to inactivate toxic heavy metals. It can easily absorb or neutralize the toxicity of heavy metals from water and soil through phytoremediation. Biosorption is a promising innovation that focuses on novel, modest, and exceptionally successful materials to apply in phytoremediation technology. Furthermore, algal biomass can be used for biofuel generation after phytoremediation using thermochemical or biological transformation processes. The algal components get affected by heavy metals during phytoremediation, but with the help of different techniques, these are yield efficient. The extreme lipid and mineral substances of microalgae have been proven helpful for biofuel manufacturing and worth extra products. Biofuels produced are bio-oil, biodiesel, bioethanol, biogas, etc. The reuse capability of algae can be utilized toward ecological manageability and economic facility. In this review article, the reuse and recycling of algal biomass for biofuel production have been represented. This novel technique has numerous benefits and produces eco-friendly and economically beneficial products.
This article explains how algal biomass left over after phytoremediation can be reused and recycled to produce biofuel. It is a novel technique that is cost-effective, demands less time for biofuel production as it does not include cultivation and harvesting time, and produces products that are economically and environmentally beneficial for society.
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Metais Pesados , Microalgas , Biomassa , Biocombustíveis , Biodegradação Ambiental , PlantasRESUMO
Rice is an ideal crop for improvement of nitrogen use efficiency (NUE), especially with urea, its predominant fertilizer. There is a paucity of studies on rice genotypes contrasting for NUE. We compared low urea-responsive transcriptomes of contrasting rice genotypes, namely Nidhi (low NUE) and Panvel1 (high NUE). Transcriptomes of whole plants grown with media containing normal (15 mM) and low urea (1.5 mM) revealed 1497 and 2819 differentially expressed genes (DEGs) in Nidhi and Panvel1, respectively, of which 271 were common. Though 1226 DEGs were genotype-specific in Nidhi and 2548 in Panvel1, there was far higher commonality in underlying processes. High NUE is associated with the urea-responsive regulation of other nutrient transporters, miRNAs, transcription factors (TFs) and better photosynthesis, water use efficiency and post-translational modifications. Many of their genes co-localized to NUE-QTLs on chromosomes 1, 3 and 9. A field evaluation under different doses of urea revealed better agronomic performance including grain yield, transport/uptake efficiencies and NUE of Panvel1. Comparison of our urea-based transcriptomes with our previous nitrate-based transcriptomes revealed many common processes despite large differences in their expression profiles. Our model proposes that differential involvement of transporters and TFs, among others, contributes to better urea uptake, translocation, utilization, flower development and yield for high NUE.
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Nitrogênio , Oryza , Nitrogênio/metabolismo , Oryza/genética , Oryza/metabolismo , Ureia/farmacologia , Ureia/metabolismo , Genótipo , GenomaRESUMO
OBJECTIVE: To evaluate the efficacy of immersive VR (IVR) and non-immersive VR (NIVR) distraction on perceived pain during intraoral injections in children undergoing dental procedures. The objective was to introduce 3-dimensional nature of virtual reality during the provoking phase of dental treatment as a means of distraction in children. STUDY DESIGN: A total of 200 children were selected for the study, 100 for IVR group and 100 for NIVR group. After randomization, children were introduced to Oculus Go Standalone equipment; MCDAS (f), VAS, WBFRS and the treatment procedure using tell show do technique. Group I children were introduced to oculus go standalone headset with hand held controller to play temple run or roller coaster game while in group II, children watched cartoon movies of their choice. Pre-operative & post-operative MCDAS scores were obtained using MCDAS (f) questionnaire in local language. Post-operatively, VAS and WBFRS scores were also obtained. The data was analyzed using independent t-test and chi-square analysis. RESULTS: Pre-operatively, the mean MCDAS scores were similar in both the groups viz. Group-I (29.20 ± 3.197) and Group-II (29.09 ± 3.803) and is statistically not significant. Post-operatively, the mean MCDAS scores were higher in non-immersive group (20.72 ± 2.822) as compared to immersive group (10.99 ± 2.227). VAS score was higher in non-immersive group (2.72 ± 0.99) as compared to immersive group (0.75 ± 0.88). WBFRS scores were higher in non-immersive group (2.78 ± 1.097) as compared to immersive group (0.82 ± 1.104). CONCLUSION: Three-dimensional virtual reality was found to be an effective means of distraction in children undergoing dental procedures and especially during the provoking phase. The significant difference obtained clearly indicates irrespective of immersiveness of virtual reality, anxiety had been decreased and on comparison the pain perception to intraoral injection is less in immersive virtual reality environment. Immersive VR distraction technique can serve as an adjunct to traditional behavior management strategies already available to the pediatric dentist.
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Percepção da Dor , Realidade Virtual , Criança , Humanos , Dor , Manejo da Dor , Medição da DorRESUMO
Grain traits are important agronomic attributes with the market value as well as milling yield of bread wheat. In the present study, quantitative trait loci (QTL) regulating grain traits in wheat were identified. Data for grain area size (GAS), grain width (GWid), factor form density (FFD), grain length-width ratio (GLWR), thousand grain weight (TGW), grain perimeter length (GPL) and grain length (GL) were recorded on a recombinant inbred line derived from the cross of NW1014 × HUW468 at Meerut and Varanasi locations. A linkage map of 55 simple sequence repeat markers for 8 wheat chromosomes was used for QTL analysis by Composite interval mapping. Eighteen QTLs distributed on 8 chromosomes were identified for seven grain traits. Of these, five QTLs for GLWR were found on chromosomes 1A, 6A, 2B, and 7B, three QTLs for GPL were located on chromosomes 4A, 5A and 7B and three QTLs for GAS were mapped on 5D and 7D. Two QTLs were identified on chromosomes 4A and 5A for GL and two QTLs for GWid were identified on chromosomes 7D and 6A. Similarly, two QTLs for FFD were found on chromosomes 1A and 5D. A solitary QTL for TGW was identified on chromosome 2B. For several traits, QTLs were also co-localized on chromosomes 2B, 4A, 5A, 6A, 5D, 7B and 7D. The QTLs detected in the present study may be validated for specific crosses and then used for marker-assisted selection to improve grain quality in bread wheat.
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The quorum sensing (QS) phenomenon regulates a myriad of pathogenic traits in the biofilm forming fish pathogen, Aeromonas hydrophila. Blocking the QS mechanism of A. hydrophila is a novel strategy to prevent disease in fish. This study evaluated the effect of tannic acid, a QS inhibitor, on A. hydrophila-associated QS regulated phenomena. A streaking assay with Chromobacterium violaceum (CVO26) reported the presence of N-acyl homoserine lactone (AHL) in A. hydrophila, which was confirmed by HPLC and GC-MS analysis. Tannic acid-treated A. hydrophila showed a considerable reduction in violacein production, blood haemolysis activity and the pattern of swarming motility. Biofilm formation was significantly reduced (p < 0.001) (up to 95%), after tannic acid treatment for 48 h. Analysis by qRT-PCR revealed significant downregulation (p < 0.001) of AhyI and AhyR transcripts in A. hydrophila after tannic acid treatment. Co-stimulation of Catla catla with A. hydrophila and tannic acid attenuated pathogen-induced skin haemorrhages and increased the relative survival rate up to 86.6%. The study provides a mechanistic basis of tannic acid as a QS blocker and indicates its therapeutic potential against A. hydrophila-induced pathogenesis.
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Aeromonas hydrophila/efeitos dos fármacos , Biofilmes/efeitos dos fármacos , Cyprinidae/microbiologia , Percepção de Quorum/efeitos dos fármacos , Taninos/farmacologia , 4-Butirolactona/análogos & derivados , 4-Butirolactona/metabolismo , Aeromonas hydrophila/genética , Aeromonas hydrophila/patogenicidade , Aeromonas hydrophila/fisiologia , Animais , Proteínas de Bactérias/genética , Chromobacterium/fisiologia , Relação Dose-Resposta a Droga , Regulação para Baixo , Virulência/efeitos dos fármacosRESUMO
Biofilm-forming and acyl homoserine lactone (AHL) synthase-positive Pseudomonas aeruginosa N6P6 was isolated from seawater after selective enrichment with two polycyclic aromatic hydrocarbons (PAHs), viz. phenanthrene and pyrene. AHL synthesis was detected qualitatively using bioreporter strains. This marine bacterium putatively synthesized N-(3-oxododecanoyl)-L-homoserine lactone and N-butyryl-L-homoserine lactone, which were identified by TLC, GC-MS, and HPLC. Two quorum sensing (QS) genes coding for AHL synthase, i.e., lasI and rhlI, were identified in the bacterium. lasI and rhlI gene expression was studied during biofilm mode of growth at different phases using quantitative real-time PCR (qRT-PCR). The expression of lasI increased with increase in biofilm growth. In contrast, the expression of rhlI decreased during log phase of biofilm growth. The changes in lasI/rhlI expression level had significant effects (P<0.05) on biofilm architecture and subsequent PAH degradation rate. Degradation of phenanthrene and pyrene by P. aeruginosa N6P6 was affected by biofilm growth and lasI expression. The respective phenanthrene degradation for 15, 24, 48, and 72 h old biofilm after 7 days was 21.5, 54.2, 85.6, and 85.7%. However, the corresponding pyrene degradation was 15, 18.28, 47.56, and 46.48%, respectively, after 7 days. A significant positive correlation (P<0.05) was observed between lasI expression and PAHs degradation. However, in the presence of tannic acid, a QS inhibitor (QSI), PAHs degradation, biofilm formation, and pyocyanin production reduced significantly which confirmed the pivotal role of QS in biodegradation of PAHs. The findings suggest that AHLs play a pivotal role during biofilm development and subsequent bioremediation of PAHs.
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Biofilmes/crescimento & desenvolvimento , Genes Bacterianos , Hidrocarbonetos Policíclicos Aromáticos/metabolismo , Pseudomonas aeruginosa/genética , Pseudomonas aeruginosa/fisiologia , Percepção de Quorum , Água do Mar/microbiologia , Acil-Butirolactonas/análise , Biotransformação , Cromatografia Líquida de Alta Pressão , Cromatografia em Camada Fina , Cromatografia Gasosa-Espectrometria de Massas , Perfilação da Expressão Gênica , Pseudomonas aeruginosa/isolamento & purificação , Pseudomonas aeruginosa/metabolismo , Reação em Cadeia da Polimerase em Tempo RealRESUMO
Biofilm-forming marine bacterium Paenibacillus lautus NE3B01 was isolated from a mangrove ecosystem, Odisha, India. This isolate formed a swarming type of colony pattern on the solid culture medium with 0.5-2 % agar. Phase contrast microscopy study of a growing colony of P. lautus on solid media and swarming pattern revealed the existence of two phenotypically distinct cells (i.e. cocci and rods) across the colonies. However, in actively growing planktonic culture, only rod-shaped cells were observed. Biofilm growth studies (crystal violet assay) with the isolate showed significant biofilm formation by 6 h, and the detachment phase was observed after 18 h. Biofilm parameters (such as total biomass, roughness coefficient, biofilm thickness, etc.) of 24-h-old P. lautus biofilm were studied by confocal scanning laser microscopy (CSLM). The CSLM study showed that P. lautus formed a biofilm with an average thickness of 14.8 ± 2.6 µm, a high roughness coefficient (0.379 ± 0.103) and surface to bio-volume ratio (4.59 ± 1.12 µm(2)/µm(3)), indicating a highly uneven topography of the biofilm. This also indicates that the 24-h-old biofilm is in dispersal phase. Scanning electron microphotographs of P. lautus also supported the existence of two distinct phenotypes of P. lautus. The current findings suggest that P. lautus has two vegetative phenotypes and to decongest the overcrowded biofilm the bacterium can switch over to motile rods from nonmotile cocci and vice versa.
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Organismos Aquáticos/citologia , Organismos Aquáticos/fisiologia , Biofilmes/crescimento & desenvolvimento , Paenibacillus/citologia , Paenibacillus/fisiologia , Ágar , Organismos Aquáticos/genética , Organismos Aquáticos/isolamento & purificação , Meios de Cultura/química , DNA Bacteriano/química , DNA Bacteriano/genética , Índia , Microscopia Confocal , Microscopia Eletrônica de Varredura , Microscopia de Contraste de Fase , Dados de Sequência Molecular , Paenibacillus/genética , Paenibacillus/isolamento & purificação , Fenótipo , Análise de Sequência de DNARESUMO
BACKGROUND: Cyclical mastalgia, which is characterized by cyclic breast pain associated with the menstrual cycle, is a common condition among premenopausal women. Despite their prevalence, effective treatment options remain limited. Evening primrose oil (EPO) and vitamin E have been proposed as potential therapies for cyclical mastalgia; however, their efficacy remains uncertain, particularly when used in combination. OBJECTIVE: This study aimed to evaluate the efficacy of EPO, vitamin E, and their combination in alleviating breast pain associated with cyclical mastalgia through a randomized controlled trial. METHODS: Premenopausal women (n=126) with cyclical mastalgia were recruited from gynecology clinics and randomized to receive EPO (1000 mg twice daily), vitamin E (400 mg once daily), their combination, or a placebo for six months. Randomization was performed using computer-generated random numbers. Participants were assessed at baseline and monthly intervals for six months. The primary outcome was the change in breast pain severity measured using a validated pain questionnaire such as the short-form McGill Pain Questionnaire. The secondary outcomes included changes in breast pain characteristics, adverse effects, and treatment adherence. RESULTS: A total of 126 participants participated in this study. The combination of EPO and vitamin E demonstrated superior efficacy in reducing breast pain severity compared with individual treatments and placebo (p < 0.001). Participants in the combination group experienced a mean reduction in breast pain severity of 4.5 points on the pain scale, whereas those in the EPO and vitamin E groups experienced reductions of 2.5 and 3.0 points, respectively. Both EPO and vitamin E alone also showed significant improvements compared with placebo (p < 0.05), with mean reductions in breast pain severity of 2.0 and 2.5 points, respectively. Adverse effects were minimal and comparable across the treatment groups. CONCLUSION: Combination therapy with EPO and vitamin E appears to be an effective treatment option for cyclical mastalgia, offering superior pain relief compared with individual treatments and placebo.
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INTRODUCTION: COVID convalescent plasma (CCP) has been used as standard of care in patients all over the world. CCP is plasma collected from recently infected and currently recovered COVID-19 patients, which contains antiviral antibodies that can be used to treat patients with COVID-19. Several studies have shown a shorter hospital stay and lower mortality in patients treated with convalescent plasma in comparison with those not treated with it. OBJECTIVES: This study aims to determine the effect of COVID convalescent plasma (CCP) on the length of hospital stay in symptomatic patients and to determine outcome of the disease in patients who were administered CCP. METHODS: This was a retrospective observational study done at a tertiary health care centre from July 2020 to May 2021, including patients who received CCP during the course of their stay in the hospital. RESULTS: Among 257 participants, the patients with multiple comorbidities who were administered CCP had the longest average length of stay in the hospital which was 15 days, out of which, 92 (35.8%) patients were discharged while 9 (3.5%) patients died. Also, the maximum number of deaths was observed in those patients who had no associated comorbidity, being 11 (4.3%). It was observed that earlier administration of CCP in patients (< 5 days from symptom onset) was associated with a higher number of discharges as compared to deaths. CONCLUSION: Our study indicates that CCP may be efficient in treating COVID-19 patients if given in early course of the disease.
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COVID-19 , Humanos , COVID-19/terapia , SARS-CoV-2 , Tempo de Internação , Centros de Atenção Terciária , Imunização Passiva/efeitos adversos , Soroterapia para COVID-19RESUMO
Bacteria are widespread in nature as they can adapt to any extreme environmental conditions and perform various physiological activities. Marine environments are one of the most adverse environments owing to their varying nature of temperature, pH, salinity, sea surface temperature, currents, precipitation regimes and wind patterns. Due to the constant variation of environmental conditions, the microorganisms present in that environment are more suitably adapted to the adverse conditions, hence, possessing complex characteristic features of adaptation. Therefore, the bacteria isolated from the marine environments are supposed to be better utilized in bioremediation of heavy metals, hydrocarbon and many other recalcitrant compounds and xenobiotics through biofilm formation and production of extracellular polymeric substances. Many marine bacteria have been reported to have bioremediation potential. The advantage of using marine bacteria for bioremediation in situ is the direct use of organisms in any adverse conditions without any genetic manipulation. This review emphasizes the utilization of marine bacteria in the field of bioremediation and understanding the mechanism behind acquiring the characteristic feature of adaptive responses.
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Bactérias/metabolismo , Biodegradação Ambiental , Concentração de Íons de Hidrogênio , Biologia Marinha , TemperaturaRESUMO
Anti-Cw antibody is an immunoglobulin against the red cell antigen Cw which is a low frequency red cell antigen that belongs to the Rh antigen system. It is a clinically significant antibody and may cause haemolysis on exposure to antigen positive red cells. Due to its low frequency, it is not included in routine antibody screening panels. A 32 years healthy male donor with no history of transfusion donated whole blood at the department of Transfusion Medicine & Blood Centre of our institute. As a part of routine pre-transfusion testing, the donor's samples were subjected to automated blood grouping and screening for unexpected red cell antibodies using 3 cells panel on solid-phase red-cell adherence (SPRCA) (Galileo Neo, Immucor, Norcross, USA). The antibody screening came out to be positive with a reaction in cell I of the antibody screening panel. Further the antibody was identified as anti Cw in using 16 cells panel, select cells and phenotyping. In the present case, the anti-Cw antibody was found to be reactive at 37 °C and AHG phase which could lead to haemolytic transfusion reaction. The fact that the male donor had no history of transfusion or transplant led us to the conclusion that it was a naturally occurring, but a clinically significant antibody. This case highlights the importance of performing an antibody screening for healthy donors as well and urges transfusion services to procure screening cells which incorporate Cw positive cells.
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Anticorpos , Antígenos de Grupos Sanguíneos , Humanos , Masculino , Transfusão de Sangue , Tipagem e Reações Cruzadas Sanguíneas , EritrócitosRESUMO
An organic acid, salicylic acid, and its derivatives are constituents of various natural products possessing remarkable bioactivity. O-Acetyl salicylate (aspirin) is a well-known life-saving drug. Its peptide derivative salicylamide has also been explored in the designing of peptide-based therapeutic drugs. An organic base, picolylamine has been recently explored for designing diagnostic probes. However, both the acid and base have common features as metal chelating with coordinating metals. Thus, these scaffolds could be used for designing inhibitors of various metalloenzymes. Their characteristic properties encourage us to design peptides containing both scaffolds (salicylic acid and picolylamine) at opposite terminals. So far there is no report available on such conjugated peptides. This report describes the synthesis, conformational analysis, and biochemical assessment of rationally designed N-salicyl-AAn-picolamide peptides. Pleasantly, we have obtained the crystal structures of representative peptides that confirm their roles in conformational changes. Our biological assessment as quorum sensing inhibitors has revealed that their di/tripeptides inhibit quorum sensing of the pathogenic bacterium PA14 strain. Hence, these peptides have promising foldameric and therapeutic values.
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Background: Abnormal uterine bleeding (AUB) is a common problem in reproductive age group and perimenopausal age group being responsible for many outpatient visits. Traditional management of AUB consists of giving mefenamic acid, tranexamic acid, or their combination with progestogens or hormonal intrauterine deviced levonorgestrel intrauterine system (LNG-IUS) for severe or nonresponsive cases. The objective of the current study was to study the efficacy and safety of adding diosmin along with tranexamic acid and mefenamic acid in reducing menstrual blood loss in AUB patients. Materials and Methods: It was a prospective double-blind randomized controlled trial in which 900 mg of diosmin was given once daily along with 500 mg tranexamic acid and 250 mg mefenamic acid during menstruation (Group I-92 patients), or only tranexamic acid and mefenamic acid during menstruation (Group II-92 patients). Results: Mean age, parity, body mass index, and socioeconomic status were similar in the two groups. It was 35.68 years versus 36.78 years, 2.2 versus 2.3, 23.68 kg/m2 versus 24.62 kg/m2 respectively. Mean days of bleeding before this treatment were 6.8 versus 6.6 (P = 0.33) and were 3.5 versus 5.2 (P = 0.02) after treatment. There was a significant reduction in both groups as compared to before treatment (P = 0.021 in Group I, 0.027 in Group II) but the reduction was greater in Group I (P = 0.02). The amount of blood loss was 385 ml versus 390 ml (P = 0.7) before treatment which was significantly reduced in both groups to 68 ml versus 112 ml (P = 0.02 in Group I, 0.03 in Group II) with more decrease in Group I than in Group II (P = 0.01). Mean hemoglobin at beginning of the study was 8.4 versus 8.5 g/dl in Group I and Group II (P = 0.02) and significantly increased in both groups posttreatment to 10.9 and 9.8 g/dl in Group I and Group II (P = 0.012 in Group I, 0.011 in Group II) with increase being more in Group I than Group II (P = 0.03). Pictorial blood assessment chart score was 398 versus 406 (P = 0.35) before treatment and decreased significantly to 86.5 and 110.5 (P = 0.001 in Group I, 0.001 in Group II) with more decrease being in Group I than II (P = 0.01). There was significant decrease in dysmenorrhea with both treatments with no difference in the two groups. Various adverse effects such as nausea, vomiting, abdominal pain, diarrhea, constipation, and headache were equal in the two groups. Conclusion: Both the group's diosmin with tranexamic acid and mefenamic acid (Group I) and tranexamic acid and mefenamic acid (Group II) were efficacious in reducing menstrual blood loss, number of menstrual days and dysmenorrhea with effect being more by addition of diosmin. Adverse effects were equal in both the two groups.
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Red blood cell (RBC) alloimmunization which is the production of antibodies in response to foreign red cell antigen(s) may occur through exposure to cells or tissues from a genetically different member of same species via transfusion, transplantation or pregnancy. It may cause hemolytic disease of fetus and newborn (HDFN). Usually the incidence of HDFN due to irregular erythrocyte antibody is rare in primigravida. Here we report a primigravida pregnant woman who developed multiple alloantibodies and the neonate developed severe HDFN. A 36-year-old primigravida pregnant woman who had no history of significant medical issues except surgery done for severe endometriosis 1â¯year back and she had no history of previous blood transfusion presented to us for delivery. The antibody screening came out to be positive with a reaction in cell I and cell II of the antibody screening panel. Further, a mixture of anti Dâ¯+â¯anti Câ¯+â¯anti E alloantibodies were identified using 16 cells panel, select cells and red cell phenotyping. The neonate developed severe HDFN which was managed with phototherapy, exchange transfusion and IvIg. There was no exposure history for sensitization except bleeding in early 2nd trimester. There was a significant discrepancy among mother, father and neonate Rh phenotype which was resolved with clinical history of Invitro fertilization (IVF) with sperm donation. This index case illustrates the need of antibody screening in primigravida antenatal women specially for Rh D negative high risk cases. It also shows importance of Rh Kell typing in sperm donors for future transfusion support of the child.
Assuntos
Anemia Hemolítica Autoimune , Eritroblastose Fetal , Feminino , Masculino , Gravidez , Humanos , Isoanticorpos , Sêmen , Eritroblastose Fetal/etiologia , Eritroblastose Fetal/terapia , Eritrócitos , Transfusão de Sangue , Anemia Hemolítica Autoimune/complicaçõesRESUMO
This case report highlights the diagnostic dilemma and therapeutic challenges encountered while managing adolescent girls with progressive dysmenorrhoea and management of Robert's uterus. Two girls aged 20 years and 13 years presented with severe progressive dysmenorrhoea. In the first case, laparoscopy revealed juvenile cystic adenomyoma (JCA) of 3 cm × 3 cm on the left side anteroinferior to the round ligament. Laparoscopic resection of the lesion was done, and histopathology revealed features of adenomyosis. In the second case, there was a globular enlargement of the right half of the uterine body with round ligament and adnexa attached to the lesion (Robert's uterus). In view of severe symptoms, complete resection of the lesion and partial resection of hemi-uterus was done, followed by myometrial defect closure. Both cases were initially diagnosed as JCA, and the final diagnosis was made on laparoscopy. Both girls had complete symptomatic relief from the next menstrual cycle and have been under follow-up for 24 months and 18 months, respectively. Due to the rarity of conditions, Robert's uterus and JCA are usually misdiagnosed with each other or with other Mullerian anomalies such as a non-communicating unicornuate uterus. Radiologists and clinicians should be aware of these different pathologies causing similar symptoms. Understanding the pathology, early diagnosis, timely referral and correct surgical procedure are emphasised to improve reproductive outcomes.