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1.
Leuk Lymphoma ; : 1-8, 2024 Apr 16.
Artículo en Inglés | MEDLINE | ID: mdl-38625039

RESUMEN

There is limited knowledge regarding the prevalence of geriatric impairments and frailty among patients with multiple myeloma (MM) in a real-world setting. This study evaluated the distribution of frailty profiles among 116 patients with newly diagnosed or relapsed MM, using four common frailty scales. The proportion of patients classified as frail varied significantly, ranging from 15.5% to 56.9%, due to differences in how frailty was operationalized between each frailty measure. Functional, cognitive, and mobility impairments were common overall and irrespective of performance status. Analyses between frailty and treatment selection (dose reduction and doublet vs. triplet therapy) demonstrated significant differences in non-steroid MM drug dose reductions between frail vs. non-frail patients, as scored by the International Myeloma Working Group (IMWG) Frailty Index and Simplified Frailty Score (p < .05). A standardized approach to frailty assessment that is practical in application, and beneficial in guiding treatment selection and minimizing treatment related toxicity is necessary to provide optimal tailored care.

2.
J Geriatr Oncol ; 15(3): 101735, 2024 04.
Artículo en Inglés | MEDLINE | ID: mdl-38460399

RESUMEN

INTRODUCTION: Many of the newer treatments for adults with newly-diagnosed and relapsed multiple myeloma (MM) are orally administered. Adherence is a challenge, and little is known about strategies to optimize adherence. MATERIALS AND METHODS: Forty-seven patients initiating orally-administered anti-myeloma therapy were enrolled and randomized in a pilot study to receive either standard of care teaching or the Multinational Association of Supportive Care in Cancer Oral agent Teaching Tool (MOATT), a structured teaching tool. Adherence was measured electronically with a Medication Event Monitoring System (MEMS) cap. Optimal adherence was defined as an adherence rate of ≥90% over the six months study duration. Patients completed surveys regarding cancer therapy satisfaction and self-efficacy for medication management at one month and six months following the initiation of treatment in both arms. RESULTS: The mean adherence of patients over six months was 86.9%; 43.9% of the cohort were classified as non-adherent using the 90% threshold of adherence. Mean adherence was similar among standard of care teaching (87.9%) versus the MOATT intervention tool (85.6%) as was cancer therapy satisfaction and self-efficacy for medication management. DISCUSSION: In our pilot, the MOATT tool was not found to be feasible or acceptable. There were no preliminary differences noted between standard of care teaching versus the structured MOATT teaching tool with regards to overall adherence rates, cancer therapy satisfaction, or self-efficacy in medication management. Overall adherence rates were suboptimal in our study. Future research should work to identify aspects of educational interventions which are effective, and investigate different strategies which can be used to supplement patient education and potentially optimize medication adherence in patients with MM.


Asunto(s)
Mieloma Múltiple , Humanos , Mieloma Múltiple/tratamiento farmacológico , Proyectos Piloto , Cumplimiento de la Medicación , Encuestas y Cuestionarios , Administración Oral
3.
Lancet Reg Health Southeast Asia ; 23: 100287, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38404519

RESUMEN

Progress in promoting mental health, preventing mental illness, and improving care for people affected by mental illness is unlikely to occur if efforts remain separated from existing public health programs and the principles of public health action. Experts met recently to discuss integrating public health and mental health strategies in the south and east of Asia, especially in low- and middle-income countries. Areas of research identified as high priority were: 1) integrating mental health into perinatal care; 2) providing culturally-adjusted support for carers of people with mental and physical disorders; 3) using digital health technologies for mental health care in areas with limited resources and 4) building local research capacity. Selection of these areas was informed by their relative novelty in the region, ease of implementation, likely widespread benefit, and potential low costs. In this article, we summarise available evidence, highlight gaps and call for collaborations with research centres, leaders and persons with lived experience within and beyond the region.

4.
Sci Rep ; 14(1): 886, 2024 01 09.
Artículo en Inglés | MEDLINE | ID: mdl-38195846

RESUMEN

Drought stress is a worldwide threat to the productivity of crops, especially in arid and semi-arid zones of the world. In the present study, the effect of selenium (Se) seed priming on the yield of quinoa under normal and drought conditions was investigated. A pot trial was executed to enhance the drought tolerance in quinoa by Se seed priming (0, 3, 6, and 9 mg Se L-1). The plants were exposed to water stress at three different growth stages of quinoa, viz. multiple leaf, flowering, and seed filling. It was noticed that drought significantly affected the yield components of quinoa, however, Se priming improved the drought tolerance potential and yield of quinoa by maintaining the plant water status. Se priming significantly increased main panicle length (20.29%), main panicle weight (26.43%), and thousand grain weight (15.41%) as well as the gas exchange parameters (transpiration rate (29.74%), stomatal conductance (35.29%), and photosynthetic rate (28.79%), total phenolics (29.36%), leaf chlorophyll contents (35.97%), water relations (leaf relative water contents (14.55%), osmotic potential (10.32%), water potential (38.35%), and turgor potential (31.37%), and economic yield (35.99%) under drought stress. Moreover, Se priming markedly improved grain quality parameters i.e., phosphorus, potassium, and protein contents by 21.28%, 18.92%, and 15.04%, respectively. The principal component analysis connected the various study scales and showed the ability of physio-biochemical factors to describe yield fluctuations in response to Se seed priming under drought conditions. In conclusion, a drought at the seed-filling stage has a far more deleterious impact among other critical growth stages and seed priming with Se (6 mg L-1) was found more effective in alleviating the detrimental effects of drought on the grain yield of quinoa.


Asunto(s)
Chenopodium quinoa , Selenio , Selenio/farmacología , Sequías , Semillas , Grano Comestible
5.
Materials (Basel) ; 16(23)2023 Nov 29.
Artículo en Inglés | MEDLINE | ID: mdl-38068154

RESUMEN

In many electronic applications, the dielectric and structural properties of reinforced composites are vital. In this research work, the influence of fiber proportion on the properties of a silica fiber/epoxy (SFE) composite was investigated. The structure, morphology, dielectric constant and loss factor, mechanical properties, and thermal stability were determined. The increase of wt.% of silica fiber (SiO2 (f)) x = 30 to 90, reduced the dielectric constant (εr) and dielectric loss (δ) of the SFE composite from their original values to 18.9% and 48.5%, lowering local charge displacement towards the applied electric field. The SFE composite showed higher mechanical properties with the increase in SiO2 (f), x = 30 to 80, the tensile strength (UTS) was raised from 91.6 MPa to 155.7 MPa, the compression strength (UCS) was increased from 261.1 MPa to 409.6 MPa and the flexural strength was enhanced from 192.3 MPa to 311.9 MPa. Upon further addition of SiO2 (f) to the composite, i.e., x = 90, the mechanical properties were reduced a little, but the dielectric properties were not changed. Increasing SiO2 (f) improved the thermal stability as weight loss was found to be 69% (x = 30) and 24% (x = 90), and average moisture absorption was found to be 1.1 to 1.8%. A silica fiber/epoxy composite, for microelectronics, can be made from a low-cost fiber, and its dielectric properties as well as its mechanical and thermal stability can be tuned or improved by varying fiber fractions.

6.
Clin Med Res ; 21(3): 159-162, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-37985168

RESUMEN

Epiploic appendagitis is a rare cause of acute lower abdominal pain. Epiploic appendices are fat-filled serosal outpouchings of the cecum and sigmoid colon. Primary epiploic appendagitis (PEA) is characterized by epiploic inflammation caused by torsion of the appendage leading to ischemia or thrombosis of the appendage draining vein. Secondary epiploic appendagitis occurs in association with other inflammatory conditions of the abdomen or pelvis, most commonly diverticulitis. PEA is an important clinical mimicker of more severe causes of acute abdominal pain, such as diverticulitis, appendicitis, or gynaecological causes. The ease of access to computed tomography (CT), the diagnostic test of choice, has resulted in increased recognition of PEA. The classic CT findings of PEA are an ovoid mass measuring between 1.5 and 3.5 cm surrounded by a hyperattenuating/hyperdense ring with a centrally located hyperdense area. It is important to diagnose PEA as it is self-limiting and the correct diagnosis can prevent unnecessary hospital admission, antibiotic use, or even surgical intervention. We present a case of a 65-year-old male with a history of diverticulitis, presenting with left lower quadrant abdominal pain who was diagnosed with PEA based on CT and successfully managed with conservative treatment.


Asunto(s)
Abdomen Agudo , Colitis Isquémica , Enfermedades del Tejido Conjuntivo , Diverticulitis , Masculino , Humanos , Anciano , Diagnóstico Diferencial , Dolor Abdominal/diagnóstico por imagen , Dolor Abdominal/etiología , Abdomen Agudo/diagnóstico , Abdomen Agudo/etiología , Diverticulitis/diagnóstico , Diverticulitis/diagnóstico por imagen , Colitis Isquémica/complicaciones , Colitis Isquémica/diagnóstico , Enfermedades del Tejido Conjuntivo/complicaciones , Enfermedades del Tejido Conjuntivo/diagnóstico
7.
Sci Rep ; 13(1): 16916, 2023 10 07.
Artículo en Inglés | MEDLINE | ID: mdl-37805552

RESUMEN

Cereal/legume intercropping is becoming a popular production strategy for higher crop yields and net profits with reduced inputs and environmental impact. However, the effects of different spatial arrangements on the growth, grain yield, nitrogen uptake, and land-use advantage of wheat/soybean relay intercropping are still unclear, particularly under arid irrigated conditions. Therefore, in a three-year field study from 2018 to 2021, soybean was relay intercropped with wheat in different crop configurations (0.9 m, narrow strips; 1.8 m, medium strips; and 2.7 m, wide strips), and the results of intercropping systems were compared with their sole systems. Results revealed that intercrops with wide strips outperformed the narrow and medium strips, when the objective was to obtain higher total leaf area, dry matter, nitrogen uptake, and grain yield on a given land area due to reduced interspecific competition between intercrops. Specifically, at maturity, wide strips increased the dry matter accumulation (37% and 58%) and its distribution in roots (37% and 55%), straw (40% and 61%), and grains (30% and 46%) of wheat and soybean, respectively, compared to narrow strips. This enhanced dry matter in wide strips improved the soybean's competitive ability (by 17%) but reduced the wheat's competitive ability (by 12%) compared with narrow strips. Noticeably, all intercropping systems accumulated a significantly higher amount of nitrogen than sole systems, revealing that wheat/soybean relay intercropping requires fewer anthropogenic inputs (nitrogen) and exerts less pressure on the ecosystem than sole systems. Overall, in wide strips, intercropped wheat and soybean achieved 62% and 71% of sole wheat and soybean yield, respectively, which increased the greater total system yield (by 19%), total land equivalent ratio (by 24%), and net profit (by 34%) of wide strips compared to narrow strips. Our study, therefore, implies that the growth parameters, grain yields, nutrient accumulation, and land-use advantage of intercrop species could be improved with the proper spatial arrangement in cereal/legume intercropping systems.


Asunto(s)
Agricultura , Grano Comestible , Agricultura/métodos , Glycine max , Triticum , Nitrógeno , Ecosistema , Productos Agrícolas , Zea mays
8.
Cancer Cell Int ; 23(1): 236, 2023 Oct 11.
Artículo en Inglés | MEDLINE | ID: mdl-37821962

RESUMEN

BACKGROUND: Breast cancer (BC) is the most common malignancy with very high incidence and relatively high mortality in women. The PIK3CA gene plays a pivotal role in the pathogenicity of breast cancer. Despite this, the mutational status of all exons except exons 9 and 20 still remains unknown. METHODS: This study uses the whole exome sequencing (WES) based approach to identify somatic PIK3CA mutations in Indian BC cohorts. The resultant hotspot mutations were validated by droplet digital PCR (ddPCR). Further, molecular dynamics (MD) simulation was applied to elucidate the conformational and functional effects of hotspot position on PIK3CA protein. RESULTS: In our cohort, PIK3CA showed a 44.4% somatic mutation rate and was among the top mutated genes. The mutations of PIK3CA were confined in Exons 5, 9, 11, 18, and 20, whereas the maximum number of mutations lies within exons 9 and 20. A total of 9 variants were found in our study, of which 2 were novel mutations observed on exons 9 (p.H554L) and 11 (p.S629P). However, H1047R was the hotspot mutation at exon 20 (20%). In tumor tissues, there was a considerable difference between copy number of wild-type and H1047R mutant was detected by ddPCR. Significant structural and conformational changes were observed during MD simulation, induced due to point mutation at H1047R/L position. CONCLUSIONS: The current study provides a comprehensive view of novel as well as reported single nucleotide variants (SNVs) in PIK3CA gene associated with Indian breast cancer cases. The mutation status of H1047R/L could serve as a prognostic value in terms of selecting targeted therapy in BC.

9.
Polymers (Basel) ; 15(20)2023 Oct 18.
Artículo en Inglés | MEDLINE | ID: mdl-37896377

RESUMEN

Polymer matrix wave transparent composites are used in a variety of high-speed communication applications. One of the applications of these involves making protective enclosures for antennas of microwave towers, air vehicles, weather radars, and underwater communication devices. Material performance, structural, thermal, and mechanical degradation are matters of concern as advanced wireless communication needs robust materials for radomes that can withstand mechanical and thermal stresses. These polymer composite radomes are installed externally on antennas and are exposed directly to ambient as well as severe conditions. In this research, epoxy resin was reinforced with a small amount of quartz fibers to yield an improved composite radome material compared to a pure epoxy composite with better thermal and mechanical properties. FTIR spectra, SEM morphology, dielectric constant (Ɛr) and dielectric loss (δ), thermal degradation (weight loss), and mechanical properties were determined. Compared to pure epoxy, the lowest values of Ɛr and δ were 3.26 and 0.021 with 30 wt.% quartz fibers in the composite, while 40% less weight loss was observed which shows its better thermal stability. The mechanical characteristics encompassing tensile and bending strength were improved by 42.8% and 48.3%. In high-speed communication applications, compared to a pure epoxy composite, adding only a small quantity of quartz fiber can improve the composite material's dielectric performance, durability, and thermal and mechanical strength.

10.
Biomedicines ; 11(9)2023 Aug 23.
Artículo en Inglés | MEDLINE | ID: mdl-37760791

RESUMEN

Green synthesis of metallic nanoparticles is an auspicious method of preparing nanoparticles using plant extracts that have lesser toxicity to animal cells and the host. In the present work, we analyzed the antibacterial activity of Citrullus colocynthis and Psidium guajava-mediated silver nanoparticles (Cc-AgNPs and Pg-AgNPs, respectively) against Aeromonas hydrophila (A. hydrophila) in an in vivo assay employing Labeo rohita (L. rohita). L. rohita were divided into six groups for both Cc-AgNPs and Pg-AgNPs treatments separately: Control, A. hydrophila infected, A. hydrophila + Ampicillin, A. hydrophila + Cc/Pg-AgNPs (25 µg/L), A. hydrophila + Cc/Pg-AgNPs (50 µg/L), and A. hydrophila + Cc/Pg-AgNPs (75 µg/L). Changes in different bio-indicators such as hematological, histological, oxidative stress, and cytokine analysis were observed. Interestingly, the infected fish treated with both types of AgNPs (Cc-AgNPs and Pg-AgNPs) exhibited a higher survival rate than the untreated infected fish and demonstrated signs of recovery from the infection, providing a compelling indication of the positive impact of phytosynthesized AgNPs. Disruptions in hematological and histological parameters were found in the infected fish. Both Cc-AgNPs and Pg-AgNPs showed recovery on the hematological and histological parameters. Analysis of oxidative stress and cytokine markers also revealed provoking evidence of the positive impact of Cc-AgNPs and Pg-AgNPs treatment against disease progression in the infected fish. The major finding of the study was that the higher concentrations of the nanoparticles (50 µg/L in the case of Cc-AgNPs and 75 µg/L in the case of Pg-AgNPs) were more effective in fighting against disease. In conclusion, our work presents novel insights for the use of green-synthesized AgNPs as economic and innocuous antibacterial candidates in aquaculture.

11.
Int J Mol Sci ; 24(15)2023 Aug 03.
Artículo en Inglés | MEDLINE | ID: mdl-37569767

RESUMEN

Microbes are the most significant ubiquitous pathogens that cause serious infections in freshwater fish, leading to tremendous economic losses. The present study was designed to investigate the extent of changes in cytokine expression, hemato-biochemical parameters, and tissue histology of Cirrhinus mrigala (C. mrigala) challenged with Pseudomonas aeruginosa (P. aeruginosa) and Fusarium oxysporum (F. oxysporum). Fish were divided into three major groups: control, P. aeruginosa-challenged, and F. oxysporum-challenged. The infection in both challenge assays was allowed to progress until 7 days post infection. Upregulated expression of TNF-α and IL-1ß was found in blood, gills, livers, and kidneys of the challenged fish. Significant differences were noted in hematological parameters of challenged fish. Alanine aminotransferase, aspartate aminotransferase, and alkaline aminotransferase levels also showed significant differences in infected and control groups. An increase in serum albumin and globulin and a decrease in total protein were noted in infected groups as compared to the control group. Severe histological alterations were noted in gill, liver, and kidney tissues of the infected groups as compared to control. The order of histological alteration index for P. aeruginosa challenge was liver > kidney > gills, and for F. oxysporum challenge it was kidney > liver > gills. These changes in fish infected by P. aeruginosa and F. oxysporum can be used as an effective and subtle index to monitor the physiological and pathological conditions of fish.

12.
Front Cardiovasc Med ; 10: 1009411, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37441708

RESUMEN

Generally, cardiac masses are initially suspected on routine echocardiography. Cardiac magnetic resonance (CMR) imaging is further performed to differentiate tumors from pseudo-tumors and to characterize the cardiac masses based on their appearance on T1/T2-weighted images, detection of perfusion and demonstration of gadolinium-based contrast agent uptake on early and late gadolinium enhancement images. Further evaluation of cardiac masses by CMR is critical because unnecessary surgery can be avoided by better tissue characterization. Different cardiac tissues have different T1 and T2 relaxation times, principally owing to different internal biochemical environments surrounding the protons. In CMR, the signal intensity from a particular tissue depends on its T1 and T2 relaxation times and its proton density. CMR uses this principle to differentiate between various tissue types by weighting images based on their T1 or T2 relaxation times. Generally, tumor cells are larger, edematous, and have associated inflammatory reactions. Higher free water content of the neoplastic cells and other changes in tissue composition lead to prolonged T1/T2 relaxation times and thus an inherent contrast between tumors and normal tissue exists. Overall, these biochemical changes create an environment where different cardiac masses produce different signal intensity on their T1- weighted and T2- weighted images that help to discriminate between them. In this review article, we have provided a detailed description of the core CMR imaging protocol for evaluation of cardiac masses. We have also discussed the basic features of benign cardiac tumors as well as the role of CMR in evaluation and further tissue characterization of these tumors.

13.
Microorganisms ; 11(6)2023 May 27.
Artículo en Inglés | MEDLINE | ID: mdl-37374925

RESUMEN

Probiotics play a significant role in aquaculture by improving the growth, health, and survival rate of fish against pathogenic organisms. In the present study, we have evaluated the effects of a Lactobacillus rhamnosus (L. rhamnosus) probiotic on growth performance and disease resistance in Oreochromis niloticus (O. niloticus) fingerlings. Four different concentrations of L. rhamnosus (T1: 0.5 × 1010, T2: 1 × 1010, T3: 1.5 × 1010, and T4: 2 × 1010 CFU/kg feed) were administered to fish over a period of three months. L. rhamnosus treated fish revealed a high growth increment as compared to the control, and the values of macromolecules (amino acids, fatty acids, and carbohydrates) varied significantly among the treated and control groups. Levels of thyroid hormones were noted to be high in the probiotic-treated groups. A challenge assay was performed with Aeromonas hydrophila (A. hydrophila). The optimum calculated concentration of probiotics from the growth assay (1.5 × 1010 CFU/kg feed) was used for the challenge assay. Fish were divided into four groups as follows: control (Con), probiotic-treated (PL), infected (I), and infected + probiotic-treated (I + PL) groups. Significant variations in hematological parameters were observed among control and treated groups. Histopathological changes were recorded in infected fish, while the infected + probiotic-treated group showed less deformations indicating the positive effect of the probiotic supplementation. The survival rate of fish was also better in the probiotic-treated group. Based on these findings, we conclude that probiotic supplementation enhances the growth and improves immunity of O. niloticus. Therefore, we propose that probiotics can be used as promising feed supplements for promoting fish production and disease resistance in aquaculture.

14.
Cureus ; 15(3): e36252, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-37069858

RESUMEN

Herein is a case of a 50-year-old male diagnosed with a non-cirrhotic acute portal vein thrombosis (PVT). Acute PVT is a rare condition usually presenting in cirrhotic patients. This patient had no past medical history of cirrhosis or hypercoagulable status and no past family history of a hypercoagulable disorder. However, the patient, who has been on testosterone replacement therapy (TRT) along with over-the-counter flax seeds (commonly known to contain phytoestrogens), recently underwent an abdominal surgery essentially placing him in a hypercoagulable state which could contribute to the development of acute PVT. This case showed the importance of being aware of possible contributors to hypercoagulable states which can lead to the occurrence of these events.

15.
PLoS One ; 18(4): e0284244, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37053209

RESUMEN

Plant derived compounds have always been an important source of medicines and have received significant attention in recent years due to their diverse pharmacological properties. Millions of plant-based herbal or traditional medicines are used to cure various types of cancers especially due to activation of proliferative genes. The aim of the present study was to characterize the altered and attenuated gene expression of the selected growth factor namely Transforming growth factor Beta -1 (TGFß1) and MYC in human hepatoma-derived (Huh7) liver cancer cell lines in response to extracts of Artemisia absinthium dissolved in selected organic solvents. Ethanolic, methanolic and acetone extract of different plant parts (leaf, stem and flowers) was used to access the antiproliferative activity by MTT (3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium Bromide) assay. Quantitative Real-Time RT-PCR revealed that the transcript levels of TGFß1 are induced in the samples treated with methanolic extract of Artemisia absinthium. Furthermore, reduced expression levels of MYC gene was noticed in cancerous cells suggesting antiproliferative properties of the plant. This study further highlights the resistance profile of various microbes by antimicrobial susceptibility test with plant extracts. In addition, antidiabetic effect of Artemisia absinthium have also shown positive results. Our study elucidates the potentials of Artemisia absinthium as a medicinal plant, and highlights the differential expression of genes involved in its mitogenic and anti-proliferative activity with a brief account of its pharmacological action.


Asunto(s)
Artemisia absinthium , Artemisia , Neoplasias Hepáticas , Plantas Medicinales , Humanos , Neoplasias Hepáticas/tratamiento farmacológico , Neoplasias Hepáticas/genética , Extractos Vegetales/farmacología , Solventes , Genes myc , Factor de Crecimiento Transformador beta1/metabolismo
16.
Materials (Basel) ; 16(5)2023 Feb 22.
Artículo en Inglés | MEDLINE | ID: mdl-36902904

RESUMEN

For curing of fiber-reinforced epoxy composites, an alternative to thermal heating is the use of microwave energy, which cures quickly and consumes less energy. Employing thermal curing (TC) and microwave (MC) curing methods, we present a comparative study on the functional characteristics of fiber-reinforced composite for microelectronics. The composite prepregs, prepared from commercial silica fiber fabric/epoxy resin, were separately cured via thermal and microwave energy under curing conditions (temperature/time). The dielectric, structural, morphological, thermal, and mechanical properties of composite materials were investigated. Microwave cured composite showed a 1% lower dielectric constant, 21.5% lower dielectric loss factor, and 2.6% lower weight loss, than thermally cured one. Furthermore, the dynamic mechanical analysis (DMA) revealed a 20% increase in the storage and loss modulus along with a 15.5% increase in the glass transition temperature (Tg) of microwave-cured compared to thermally cured composite. The fourier transformation infrared spectroscopy (FTIR) showed similar spectra of both the composites; however, the microwave-cured composite exhibited higher tensile (15.4%), and compression strength (4.3%) than the thermally cured composite. These results illustrate that microwave-cured silica-fiber-reinforced composite exhibit superior electrical performance, thermal stability, and mechanical properties compared to thermally cured silica fiber/epoxy composite in a shorter time and the expense of less energy.

17.
Plant J ; 114(2): 355-370, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36775978

RESUMEN

Phosphorus (P) is a major element required for plant growth and development. To cope with P shortage, plants activate local and long-distance signaling pathways, such as an increase in the production and exudation of strigolactones (SLs). The role of the latter in mitigating P deficiency is, however, still largely unknown. To shed light on this, we studied the transcriptional response to P starvation and replenishment in wild-type rice and a SL mutant, dwarf10 (d10), and upon exogenous application of the synthetic SL GR24. P starvation resulted in major transcriptional alterations, such as the upregulation of P TRANSPORTER, SYG1/PHO81/XPR1 (SPX) and VACUOLAR PHOSPHATE EFFLUX TRANSPORTER. Gene Ontology (GO) analysis of the genes induced by P starvation showed enrichment in phospholipid catabolic process and phosphatase activity. In d10, P deficiency induced upregulation of genes enriched for sesquiterpenoid production, secondary shoot formation and metabolic processes, including lactone biosynthesis. Furthermore, several genes induced by GR24 treatment shared the same GO terms with P starvation-induced genes, such as oxidation reduction, heme binding and oxidoreductase activity, hinting at the role that SLs play in the transcriptional reprogramming upon P starvation. Gene co-expression network analysis uncovered a METHYL TRANSFERASE that displayed co-regulation with known rice SL biosynthetic genes. Functional characterization showed that this gene encodes an enzyme catalyzing the conversion of carlactonoic acid to methyl carlactonoate. Our work provides a valuable resource to further studies on the response of crops to P deficiency and reveals a tool for the discovery of SL biosynthetic genes.


Asunto(s)
Oryza , Fosfatos , Fosfatos/metabolismo , Oryza/metabolismo , Lactonas/metabolismo , Perfilación de la Expresión Génica , Regulación de la Expresión Génica de las Plantas
18.
Community Ment Health J ; 59(6): 1064-1070, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-36609784

RESUMEN

Suicide is a global phenomenon with about 79% of suicides occurring in low and middle-income countries. This study investigated current trends, demographics, and characteristics of completed suicides based on reports from leading Pakistani Newspapers. This study performed a qualitative analysis of completed suicides in Pakistan's four newspapers from January 1st, 2019, through December 31st, 2020. Data about socio-demographic characteristics, methods of suicide, possible motives, and associated features were analyzed. 2295 suicides were reported in Pakistan during 2019 and 2020. About 61.87% were completed by men, and 38.12% by women. The most suicides occurred in individuals ages < 30 years. The predominant method of suicide in this group was ingestion of poisonous substances. The most commonly reported reasons for suicide were domestic conflicts, financial problems, and failure in love/marriage. By providing insight into characteristics of suicide, this study highlights the need for effective suicide prevention policies and programs to tackle rising rates of suicide in Pakistan.


Asunto(s)
Suicidio , Masculino , Humanos , Femenino , Pakistán/epidemiología , Prevención del Suicidio , Matrimonio , Motivación
19.
Pak J Med Sci ; 39(1): 6-11, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36694742

RESUMEN

Background and Objective: Suicide is a serious, yet preventable global mental health problem for people of all ages and countries. It is the third leading cause of death in 15-19-year-olds. There is paucity of systematic studies and official statistics on child & adolescent suicides in Pakistan. In the absence of other means, newspaper coverage of adolescent suicides may serve as a useful source to understand the phenomena. Our objective was to report pattern of suicide deaths in children and adolescents across Pakistan and to determine the predominant methods of suicide precipitating events and associated factors. Methods: This study used content analysis to analyze newspaper reports of adolescent suicide in four leading newspapers of Pakistan from January 1st, 2019, through December 31st, 2020. Search yielded 289 child and adolescent (ages<18) suicide reports. Data about various sociodemographic characteristics, methods of suicide, possible motives, and associated features (e.g., any suicide notes) was extracted and analyzed. Results: Total 289 suicides in children and adolescents in Pakistan were reported in selected newspapers during two years among both genders (51.5 % boys and 48.5% girls) with high incidence in late adolescence (66%). The predominant method of suicide in this group was ingestion of poisonous substances (50%) followed by hanging (35%) and use of firearms (7%). The behavior usually takes place within or near the adolescent's home environment. The act was often attributed to domestic conflicts including arguments with parents of the deceased and relationship problems. Conclusion: To develop effective suicide prevention strategies for a population, it must be studied within its own socio-cultural context. Study results emphasize adolescent suicide being a reality in Pakistan. There is urgent need for further culture specific research in this area in the country.

20.
Int J Soc Psychiatry ; 69(2): 406-411, 2023 03.
Artículo en Inglés | MEDLINE | ID: mdl-35734801

RESUMEN

BACKGROUND: In Pakistan, there is lack of official suicide data due to associated stigma and socio-cultural factors. Although, suicide incidents are regularly reported in newspapers there are no official suicide reporting guidelines. AIMS: The aim was to study the quality of suicide reporting in Pakistani newspapers and compare it to international media guidelines. METHOD: Newspaper reports on suicide deaths were searched in four Pakistani national newspapers from 1st January 2019 to 31st December 2020. Data was extracted using templates based on World Health Organization and Reporting on Suicide media guidelines. RESULTS: There were total 2,295 suicides reported in 2 years. The word 'suicide' was mentioned in title of 2,113 (92.06%) reports. In 70.37% news articles, motive for suicide was reduced to a single factor. Method was mentioned in 95.6% suicides. Pictures accompanied 103 (4.4%) news reports. Only 13 (0.57%) the news stories recognized the link between substance abuse and suicide. None of the reports provided education to public about suicide or mentioned resources to seek help. CONCLUSIONS: The articles reporting on suicide deaths were regularly featured in Pakistani newspapers with strikingly low level of adherence to suicide reporting guidelines.


Asunto(s)
Suicidio , Humanos , Pakistán , Organización Mundial de la Salud , Estigma Social , Escolaridad , Medios de Comunicación de Masas
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