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1.
BMC Womens Health ; 24(1): 231, 2024 Apr 10.
Artículo en Inglés | MEDLINE | ID: mdl-38600481

RESUMEN

BACKGROUND: Early childbearing disrupts girls' otherwise healthy growth into adulthood and adversely affects their education, livelihood, and health. Individual, sociocultural, economic, environmental, and health service-related factors contribute to childbearing among young females. In India, caste affects health outcomes despite several affirmative policies aimed at improving the health and welfare of the backward castes/tribes. However, there is a dearth of empirical evidence about the impact of caste on early childbearing, more specifically, regarding the trajectory of inter-caste disparities in early childbearing. METHOD: This study used data from all five rounds of the National Family Health Survey (NFHS) in India to assess the association between caste and early childbearing over the last three decades. All women aged 20-24 [NFHS-1 (n = 17,218), NFHS-2 (n = 15,973), NFHS-3 (n = 22,807), NFHS-4 (n = 122,955) and NFHS-5 (n = 118,700)] were considered to create a pooled data set (n = 297,653) for analysis. Bivariate analysis and binary logistic regression were conducted using Stata (v17). ArcMap (v10.8) presented the caste-wise prevalence of early childbearing among the states and Union Territories (UTs). RESULTS: Many women continue to have early childbearing despite a considerable reduction over the last three decades from 47% in 1992-93 to 15% in 2019-21. Compared to NFHS-1, the odds of early childbearing increased by 15% in NFHS-2 and, after that, declined by 42% in NFHS-3 and 64% in NFHS-4 and NFHS-5. The inter-caste disparity in early childbearing persists, albeit with a narrowing gap, with the Scheduled castes (SC) remaining the most vulnerable group. Adjusting the effects of socio-demographic and economic characteristics, SC women had significantly higher odds of early childbearing (OR = 1.07, CI = 1.04-1.11) than those from the General caste. CONCLUSION: To decrease early childbirth, a focus on adolescent marriage prevention and increasing contraceptive use among young SC women is necessary. Strengthening ongoing programs and policies targeting educational and economic empowerment of the socially weaker castes/tribes will help in reducing early childbearing. Efforts to prevent early childbearing will accelerate the achievement of the Sustainable Development Goals (SDGs)-especially those related to health, poverty, nutrition, education, and general wellbeing, in addition to protecting women's reproductive rights.


Asunto(s)
Pobreza , Clase Social , Adolescente , Femenino , Humanos , Escolaridad , Estado de Salud , India/epidemiología , Factores Socioeconómicos
2.
Biodemography Soc Biol ; : 1-12, 2024 Apr 18.
Artículo en Inglés | MEDLINE | ID: mdl-38634682

RESUMEN

Minimum acceptable diet (MAD) that combines minimum dietary diversity (MDD) and minimum meal frequency (MMF) is one of the eight core indicators for assessing infant and young child feeding (IYCF) practices for children aged 6-23 months. With low MAD, young children and infants are more susceptible to undernutrition. The study assesses the prevalence and predictors of MAD among tribal children aged 6-23 months in India. Descriptive, bivariate, and multivariate analyzes were performed on data from 6326 tribal children of the National Family Health Survey (2019-21). Stata was used for the analyzes, with a 5% significance level. Only 12% of tribal children were fed with a MAD, while 24% had MDD and 34% MMF. Children aged 18-23 months had a three times higher chance of MAD than their 6-8 months counterparts. Children receiving Integrated Child Development Services (ICDS), children of mothers with ten or more years of schooling, children whose mothers were exposed to mass media, and whose mothers had 4+ antenatal care visits in their last pregnancy had a higher likelihood of MAD. The study concludes that MAD among tribal children aged 6-23 months is unsatisfactory and varies significantly by socio-demographic characteristics, suggesting targeted intervention.

3.
Indian J Anaesth ; 68(4): 366-373, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38586260

RESUMEN

Background and Aims: We compared classical (medial) and modified (lateral) thoracolumbar interfascial plane block (TLIP) with only general anaesthesia (GA) using multimodal analgesia in patients undergoing lumbar disc surgeries. Methods: In this study, 100 patients aged 18-70 years were randomised to Group cTLIP (conventional TLIP block with 20 mL of 0.25% ropivacaine with GA), Group mTLIP (modified TLIP block with 20 mL of 0.25% ropivacaine with GA), and Group C (only GA using multimodal analgesia). The primary outcome was to assess the total peri-operative opioid consumption in the first 24 h. The secondary outcomes were to assess pain score upon arriving in the post-anaesthesia care unit, time to first analgesic need after surgery, post-operative opioid consumption in 24 h, and incidence of nausea and vomiting. Results: The total peri-operative opioid consumption in Group cTLIP (507.58 (258.55) µg) and Group mTLIP (491.67 (165.39) µg) was significantly lower than that in Group C (1225.4 (237.03) µg); (P < 0.001). However, it was comparable between groups cTLIP and mTLIP (P = 0.767). Pain score was comparable in groups cTLIP and mTLIP. It was significantly lower than Group C (P = 0.001). Rescue analgesia was needed in all (100%) patients of Group C but in only 15.2% of patients of the cTLIP and mTLIP groups. No patient in groups cTLIP and mTLIP complained of nausea and vomiting in the first 24 h, whereas it was significantly higher (61.8%) in Group C (P = 0.001). Conclusion: The analgesic effect of the modified TLIP block was not superior to the conventional TLIP block. Both techniques provided the same intra-operative and post-operative analgesia for lumbar disc surgeries.

4.
ACS Appl Bio Mater ; 7(4): 2346-2353, 2024 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-38556982

RESUMEN

In this study, we designed and synthesized metalloporphyrin derivatives (with Ni and Zn) specifically intended for the fluorescence detection of nicotine in aqueous solutions. Our results showcased a notable selectivity for nicotine over other naturally occurring food toxins, exhibiting an exceptional sensitivity with a limit of detection as low as 7.2 nM. Through mechanistic investigations (1H NMR, FT-IR, etc.), we elucidated the binding mechanism, revealing the specific interaction between the pyridine ring of nicotine and the metal center, while the N atom pyrrolidine unit engaged in the hydrogen bonding with the side chain of the porphyrin ring. Notably, we observed that the nature of the metal center dictated the extent of interaction with nicotine; particularly, Zn-porphyrin demonstrated a superior response compared to Ni-porphyrin. Furthermore, we performed the quantitative estimation of nicotine in commercially available tobacco products. Additionally, we conducted the antibacterial (Staphylococcus aureus and Escherichia coli) and antifungal (Candida albicans) activities of the porphyrin derivatives.


Asunto(s)
Metaloporfirinas , Porfirinas , Metaloporfirinas/farmacología , Nicotina/farmacología , Espectroscopía Infrarroja por Transformada de Fourier , Antibacterianos/farmacología , Antibacterianos/química , Metales , Porfirinas/farmacología , Porfirinas/química , Escherichia coli
5.
Langmuir ; 40(12): 6163-6171, 2024 Mar 26.
Artículo en Inglés | MEDLINE | ID: mdl-38478712

RESUMEN

Here, we investigated the optical properties of biocompatible supramolecular assemblies formed through electrostatic interactions between anionic fluorescent dyes and biogenic polymers. The dynamic equilibrium between the monomeric form (fluorescent) and aggregates (nonfluorescent) of dye molecules is responsible for the stimuli-responsive behavior of these polymer composites, which can respond to changes in pH, temperature, and ionic strength. Furthermore, we employed supramolecular assemblies for the purpose of turn-on fluorescence sensing of adenosine triphosphate (ATP) at physiological pH. Notably, no interference was observed even in the presence of well-known competing analytes such as pyrophosphate. In addition to its outstanding selectivity, the present system can detect ATP at concentrations as low as 4.8 nM. The superior detection capabilities are achieved through multiple interactions with biogenic polymers, involving the adenine ring, ribose unit (through hydrogen bonding), and phosphate groups (via charge pairing) of ATP. Given the remarkable sensitivity to ATP, we have applied the present system for the detection of a dephosphorylating enzyme, alkaline phosphatase.


Asunto(s)
Adenosina Trifosfato , Polímeros , Polímeros/química , Colorantes Fluorescentes/química , Fosfatasa Alcalina , Pruebas de Enzimas
6.
Immunopharmacol Immunotoxicol ; : 1-11, 2024 Mar 25.
Artículo en Inglés | MEDLINE | ID: mdl-38478467

RESUMEN

Rheumatoid arthritis (RA) is a persistent autoimmune condition characterized by ongoing inflammation primarily affecting the synovial joint. This inflammation typically arises from an increase in immune cells such as neutrophils, macrophages, and T cells (TC). TC is recognized as a major player in RA pathogenesis. The involvement of HLA-DRB1 and PTPN-2 among RA patients confirms the TC involvement in RA. Metabolism of TC is maintained by various other factors like cytokines, mitochondrial proteins & other metabolites. Different TC subtypes utilize different metabolic pathways like glycolysis, oxidative phosphorylation and fatty acid oxidation for their activation from naive TC (T0). Although all subsets of TC are not deleterious for synovium, some subsets of TC are involved in joint repair using their anti-inflammatory properties. Hence artificially reprogramming of TC subset by interfering with their metabolic status poised a hope in future to design new molecules against RA.

7.
Biomed Phys Eng Express ; 10(3)2024 Apr 04.
Artículo en Inglés | MEDLINE | ID: mdl-38316022

RESUMEN

AIM OF THE STUDY: This research endeavours to optimize cardiac anomaly detection by introducing a method focused on selecting the most effective Daubechis wavelet families. The principal aim is to differentiate between cardiac states that are normal and abnormal by utilizing longer electrocardiogram (ECG) signal events based on the Apnea ECG dataset. Apnea ECG is often used to detect sleep apnea, a sleep disorder characterized by repeated interruptions in breathing during sleep. By using machine learning methods, such as Principal Component Analysis (PCA) and different classifiers, the goal is to improve the precision of cardiac irregularity identification. Used method. To extract important statistical and sub-band information from lengthy ECG signal episodes, the study uses a novel method that combines discrete wavelet transform with Principal Component Analysis (PCA) for dimension reduction. The methodology focuses on successfully categorizing ECG signals by utilizing several classifiers, including multilayer perceptron (MLP) neural network, Ensemble Subspace K-Nearest Neighbour(KNN), and Ensemble Bagged Trees, together with varied Daubechis wavelet families (db2, db3, db4, db5, db6). Brief Description of Results. The results emphasize the importance of the chosen Daubechis wavelet family, db5, and its superiority in ECG representation. The method distinguishes normal and abnormal ECG signals well on the Physionet Apnea ECG database. The Neural Network-based method accurately recognizes 100% of healthy signals and 97.8% of problematic ones with 98.6% accuracy. FINDINGS: The Ensemble Subspace K-Nearest Neighbour (KNN) and Ensemble Bagged Trees methods got 87.1% accuracy and 0.89 and 0.87 AOC curve values on this dataset, showing that the method works. Precision values of 0.96, 0.86, and 0.86 for MLP Neural Network, KNN Subspace, and Ensemble Bagged Trees confirm their robustness. These findings suggest wavelet families and machine learning can improve cardiac abnormality detection and categorization.


Asunto(s)
Algoritmos , Síndromes de la Apnea del Sueño , Humanos , Análisis de Ondículas , Síndromes de la Apnea del Sueño/diagnóstico , Redes Neurales de la Computación , Electrocardiografía/métodos
8.
J Org Chem ; 89(4): 2182-2189, 2024 Feb 16.
Artículo en Inglés | MEDLINE | ID: mdl-38326283

RESUMEN

Terminal alkynes undergo a CO-free aminocarbonylation reaction mediated by thiuram disulfides. Thiuram disulfide acts as the source of the carbamoyl group in the amidation of terminal alkynes in the presence of copper-based reagent and catalyst. A series of alkynyl amides has been prepared with several structural variations following the current one-pot two-step protocol. The reaction proceeds through a mixed disulfide intermediate, which has been isolated and characterized by single-crystal XRD analysis.

9.
ACS Appl Mater Interfaces ; 16(2): 2940-2953, 2024 Jan 17.
Artículo en Inglés | MEDLINE | ID: mdl-38176105

RESUMEN

The diverse nature of optoelectronic properties of few-layer or monolayer MoS2 is generally dominated by A and B excitons. Occasionally, strong Coulombic interactions within the 2D monolayer led to the creation of hydrogen-like Rydberg states of excitons in MoS2 similar to other 2D monolayers. In this paper, a simple process is used to convert trilayer MoS2 films to a monolayer by introducing H2 gas during chemical vapor deposition. Remarkably, alongside the usual A, B excitons, and A- trion, the appearance of the Rydberg states is evidenced by photoluminescence spectra even at room temperature; also, there is an increase in their areal percentage with an increase in H2 content. The s-type excited Rydberg states up to the fourth order (n = 5) and third order (n = 4) of A and B excitons, respectively, have been probed from the photoluminescence spectra at 93 K. Unprecedentedly, the first-order derivative of room-temperature photocurrent spectrum reveals the Rydberg states concurrently and elaboratively. Furthermore, the large-area MoS2 films exhibit photoresponse in a broad UV to visible region with excellent photosensitivity (∼102) toward both UV and visible lights. Not only does this provide a profound understanding of the excitonic Rydberg states but also highlights the considerable potential of large-area monolayer MoS2 overcoming the difficulty of tiny flake-related 2D device endeavors.

10.
J Chem Theory Comput ; 20(1): 323-332, 2024 Jan 09.
Artículo en Inglés | MEDLINE | ID: mdl-38153836

RESUMEN

Vibronic coupling has a dramatic influence over a large number of molecular processes, ranging from photochemistry to spin relaxation and electronic transport. The simulation of vibronic coupling with multireference wave function methods has been largely applied to organic compounds, and only early efforts are available for open-shell systems such as transition metal and lanthanide complexes. In this work, we derive a numerical strategy to differentiate the molecular electronic Hamiltonian in the context of multireference ab initio methods and inclusive of spin-orbit coupling effects. We then provide a formulation of open quantum system dynamics able to predict the time evolution of the electron density matrix under the influence of a Markovian phonon bath up to fourth-order perturbation theory. We apply our method to Co(II) and Dy(III) molecular complexes exhibiting long spin relaxation times and successfully validate our strategy against the use of an effective spin Hamiltonian. Our study sheds light on the nature of vibronic coupling, the importance of electronic excited states in spin relaxation, and the need for high-level computational chemistry to quantify it.

11.
Cell Mol Neurobiol ; 44(1): 9, 2023 Dec 20.
Artículo en Inglés | MEDLINE | ID: mdl-38123863

RESUMEN

Lipid droplets (LDs) are subcellular organelles secreted from the endoplasmic reticulum (ER) that play a major role in lipid homeostasis. Recent research elucidates additional roles of LDs in cellular bioenergetics and innate immunity. LDs activate signaling cascades for interferon response and secretion of pro-inflammatory cytokines. Since balanced lipid homeostasis is critical for neuronal health, LDs play a crucial role in neurodegenerative diseases. RNA viruses enhance the secretion of LDs to support various phases of their life cycle in neurons which further leads to neurodegeneration. Targeting the excess LD formation in the brain could give us a new arsenal of antiviral therapeutics against neuroviruses. Liposomes are a suitable drug delivery system that could be used for drug delivery in the brain by crossing the Blood-Brain Barrier. Utilizing this, various pharmacological inhibitors and non-coding RNAs can be delivered that could inhibit the biogenesis of LDs or reduce their sizes, reversing the excess lipid-related imbalance in neurons. Liposome-Mediated Antiviral Drug Delivery Across Blood-Brain Barrier. Developing effective antiviral drug is challenging and it doubles against neuroviruses that needs delivery across the Blood-Brain Barrier (BBB). Lipid Droplets (LDs) are interesting targets for developing antivirals, hence targeting LD formation by drugs delivered using Liposomes can be game changers.


Asunto(s)
Gotas Lipídicas , Liposomas , Liposomas/metabolismo , Gotas Lipídicas/metabolismo , Barrera Hematoencefálica , Metabolismo de los Lípidos/genética , Sistemas de Liberación de Medicamentos , Antivirales/farmacología , Antivirales/metabolismo , Lípidos
12.
Heliyon ; 9(11): e21223, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-38027995

RESUMEN

In this work, general formulas of degree-based and neighborhood degree sum-based topological indices for a 2D lattice of H-Naphtalenic nanotubes and pent-heptagonal nanosheets are determined. As an example, six neighborhood degree sum-based topological indices are computed using the obtained formula. Furthermore, the extremal cases of these nanostructures with a fixed number of blocks are characterized for a given degree-based or neighborhood degree sum-based topological index. Also a visual comparison of these indices is shown. Additionally, it is demonstrated how beneficial the indices are for representing structure-property relationships.

13.
BMC Pregnancy Childbirth ; 23(1): 674, 2023 Sep 19.
Artículo en Inglés | MEDLINE | ID: mdl-37726663

RESUMEN

BACKGROUND: Pregnancy registration is one of the most critical components of women's reproductive health because it is the gateway to entering the continuum of care services such as antenatal care, institutional delivery, and postnatal care. There is a lack of studies exploring the relationship between pregnancy intention and pregnancy registration, especially in the Indian context. METHOD: This study used the National Family Health Survey-5 (2019-21) data to explore the relationship between birth intention and failure of pregnancy registration. The bivariate and multivariate (binary logistic regression) analysis was carried out. RESULTS: Adjusting the effects of socio-demographic and economic characteristics, compared with women with an intended pregnancy, the odds of failure of pregnancy registration were significantly high among women with a mistimed pregnancy (OR = 1.60, 95% CI = 1.47-1.73) and unwanted pregnancy (OR = 1.38, 95% CI = 1.26-1.52). The study found pregnancy intention as a significant predictor of pregnancy registration. CONCLUSIONS: Results suggest strengthening the interaction of grassroots-level health workers with women, especially those with possibly lower healthcare autonomy and unintended pregnancy. Higher and earlier pregnancy registration will enhance maternal healthcare utilization and reduce adverse health consequences to mothers and children, thus ensuring better maternal and child health.


Asunto(s)
Pueblo Asiatico , Intención , Embarazo , Niño , Humanos , Femenino , India/epidemiología , Salud Infantil , Madres
14.
BMC Womens Health ; 23(1): 418, 2023 08 09.
Artículo en Inglés | MEDLINE | ID: mdl-37553598

RESUMEN

BACKGROUND: Contraceptive use contributes to improved maternal and child health, education, empowerment of women, slow population growth, and economic development. The role of the family in influencing women's health and health-seeking behavior is undergoing significant changes, owing to higher education, media exposure, and numerous government initiatives, in addition to women's enhanced agency across South Asia. Against this backdrop, this study assesses the relationship between women's living arrangements and contraceptive methods used in selected south Asian countries (India, Pakistan, Nepal, and Bangladesh). METHODS: Data of currently married women aged 15-49 from the recent round of Demographic and Health Survey (DHS) of four South Asian countries, i.e., Nepal (2016), Pakistan (2017-18), Bangladesh (2017-18), and India (2019-21) had been used. Bivariate and multinomial logistic regression was performed using Stata with a 5% significance level. RESULTS: Living arrangement of women had a significant association with contraceptive use in South Asia. The Mother-in-law (MIL) influenced the contraceptive method used by the Daughter-in-law (DIL), albeit a country-specific method choice. Modern limiting methods were significantly higher among women living with MIL in India. The use of the modern spacing method was considerably high among women co-residing with husband and/or unmarried child(ren) and MIL in Nepal and India. In Bangladesh, women living with husband and other family member including MIL were more likely to use modern spacing methods.. Women co-residing with the MIL had a higher likelihood of using any traditional contraceptive method in India. CONCLUSIONS: The study suggests family planning program to cover MIL for enhancing their understanding on the benefits of contraceptive use and modifying norms around fertility. Strengthening the interaction between the grassroots level health workers and the MIL, enhancing social network of DIL may help informed choice and enhance the use of modern spacing methods. Women's family planning demands met with modern contraception, and informed contraceptive choices, must also be achieved to reach the 2030 Agenda for Sustainable Development.


Asunto(s)
Servicios de Planificación Familiar , Madres , Niño , Femenino , Humanos , Bangladesh , Nepal , Pakistán , Sur de Asia , Anticoncepción , India , Anticonceptivos , Conducta Anticonceptiva , Países en Desarrollo , Factores Socioeconómicos
15.
Entropy (Basel) ; 25(7)2023 Jul 21.
Artículo en Inglés | MEDLINE | ID: mdl-37510039

RESUMEN

Graph entropy plays an essential role in interpreting the structural information and complexity measure of a network. Let G be a graph of order n. Suppose dG(vi) is degree of the vertex vi for each i=1,2,…,n. Now, the k-th degree-based graph entropy for G is defined as Id,k(G)=-∑i=1ndG(vi)k∑j=1ndG(vj)klogdG(vi)k∑j=1ndG(vj)k, where k is real number. The first-degree-based entropy is generated for k=1, which has been well nurtured in last few years. As ∑j=1ndG(vj)k yields the well-known graph invariant first Zagreb index, the Id,k for k=2 is worthy of investigation. We call this graph entropy as the second-degree-based entropy. The present work aims to investigate the role of Id,2 in structure property modeling of molecules.

16.
Glob Soc Welf ; : 1-12, 2023 Jun 08.
Artículo en Inglés | MEDLINE | ID: mdl-37361931

RESUMEN

Background: Despite the consistent prevalence of unintended pregnancies in India and its adverse impact on maternal and neonatal mortality, the literature discussing socioeconomic inequality remains scarce. This study aims to assess the change in wealth-related inequalities in unintended pregnancy in India from 2005-2006 to 2019-20 and to quantify the contribution of various factors towards inequality. Methods: The present study analyzed cross-sectional data from the third and fifth rounds of the National Family Health Survey (NFHS). The information on fertility preferences and pregnancy intention of most recent live birth during the five years preceding the survey was collected from eligible women. The concentration index and Wagstaff decomposition were used to analyze wealth-related inequality and the contributing factors. Results: Our results show that the prevalence of unintended pregnancy has declined in 2019-20 to 8% from 22% in 2005-2006. With the increase in education and wealth status, unintended pregnancy decreases significantly. The results of the concentration index depict that unintended pregnancy is more concentrated among the poor than the rich in India, and the individual's wealth status has the highest contribution to unintended pregnancy inequality. Other factors like mothers' BMI, place of residence and education also contribute majorly to the inequality. Conclusions: The study results are critical and increase the need for strategies and policies. Disadvantaged women need education and family planning information, plus access to reproductive health resources. Governments should improve accessibility and quality of care in family planning methods to prevent unsafe abortions, unwanted births, and miscarriages. Further research is needed to investigate the impact of social and economic status on unintended pregnancies.

17.
J Mater Chem B ; 11(18): 4111-4120, 2023 05 10.
Artículo en Inglés | MEDLINE | ID: mdl-37165919

RESUMEN

Polyaromatic amphiphilic probes have been developed, that can be involved in chromogenic detection of Cu+ ions in anionic micelles. A rapid change in solution color from yellow to orange was observed in the presence of Cu+ ions. The detection limit was found at the nanomolar range. To the best of our knowledge, this is the first report of the visible detection of Cu+ ions in aqueous medium using anionic micelles as a stabilizing agent. Interestingly, the compound can also detect Cu+ ions, generated in situ from physiological redox processes. The mechanistic investigation suggests that the probe molecule forms a diamagnetic tetrahedral complex with the Cu+ ion, coordinating through a pyridyl ketone unit. In addition, we have also followed the interaction with Cu+ on a bilayer surface made of anionic phospholipids. Further, a Cu2+-probe ensemble is used to assay the reducing ability of different biogenic thiols depending upon the pKa of their sulfhydryl (-SH) group. This allows us to determine the amount of reducing thiols present in human urine samples. Considering the high sensitivity of the present system, we screened water samples collected from different natural sources for Cu+ ions. Nearly 100% recovery values with considerably small relative standard deviations (<5%) indicate that the present system is indeed suitable for real-life sample analysis. Finally, low-cost, reusable, chemically-modified paper strips have been developed for rapid, on-location detection of Cu+ ions.


Asunto(s)
Surfactantes Pulmonares , Tensoactivos , Humanos , Micelas , Cobre/análisis , Iones , Compuestos de Sulfhidrilo
18.
Org Lett ; 25(21): 3941-3945, 2023 Jun 02.
Artículo en Inglés | MEDLINE | ID: mdl-37205608

RESUMEN

We report the synthesis of bis-benzofulvenes and the studies on their optical and redox properties. Bis-benzofulvenes were achieved through the Pd-catalyzed intramolecular Heck coupling followed by Ni0-mediated C(sp2)-Br dimerization. Low optical and electrochemical energy gaps of 2.05 and 1.68 eV were achieved by tuning the substituent on the exomethylene unit and the aromatic ring. The observed trends in the energy gaps were compared, and the frontier molecular orbitals were visualized using the density functional theory.

19.
Biochimie ; 213: 168-175, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37211256

RESUMEN

High mobility group B1 (HMGB1) is an architectural protein that recognizes the DNA damage sites formed by the platinum anticancer drugs. However, the impact of HMGB1 binding on the structural alterations of the platinum drug-treated single dsDNA molecules has remained largely unknown. Herein, the structural alterations induced by the platinum drugs, the mononuclear cisplatin and it's analog the trinuclear BBR3464, have been probed in presence of HMGB1, by atomic force microscopy (AFM) and AFM-based force spectroscopy. It is observed that the drug-induced DNA loop formation enhanced upon HMGB1 binding, most likely as a result of HMGB1-induced increase in DNA conformational flexibility that allowed the drug-binding sites to come close and form double adducts, thereby resulting in enhanced loop formation via inter-helix cross-linking. Since HMGB1 enhances DNA flexibility, the near-reversible structural transitions as observed in the force-extension curves (for 1 h drug treatment), generally occurred at lower forces in presence of HMGB1. The DNA structural integrity was largely lost after 24 h drug treatment as no reversible transition could be observed. The Young's modulus of the dsDNA molecules, as estimated from the force-extension analysis, increased upon drug treatment, due to formation of the drug-induced covalent cross-links and consequent reduction in DNA flexibility. The Young's modulus increased further in presence of HMGB1 due to HMGB1-induced enhancement in DNA flexibility that could ease formation of the drug-induced covalent cross-links. To our knowledge, this is the first report that shows an increase in the stiffness of the platinum drug-treated DNA molecules in presence of HMGB1.


Asunto(s)
Antineoplásicos , Proteína HMGB1 , Platino (Metal)/farmacología , Proteína HMGB1/química , Proteína HMGB1/metabolismo , ADN/química , Cisplatino/farmacología , Antineoplásicos/farmacología , Antineoplásicos/química , Conformación de Ácido Nucleico
20.
Reprod Health ; 20(1): 64, 2023 Apr 27.
Artículo en Inglés | MEDLINE | ID: mdl-37106377

RESUMEN

BACKGROUND: Women's gynecological health needs are not limited to the reproductive years of their life. Women are at risk of hormonal changes, gynecological malignancies, and various genitourinary conditions as they move toward menopause and beyond. Concerns about older women's sexual and reproductive health and rights (SRHR) continue to be taboo in many countries, of little interest to researchers and professionals in the field of healthcare, and a "blind spot" in discussions about policy as a whole. Despite the widespread agreement, the life course approach to addressing SRHR concerns has received minimal attention. The study estimates the prevalence, assesses the correlates, and treatment-seeking of gynecological morbidity (GM) among older adult women aged 45-59 years (N = 18,547) in India. METHOD: The analysis was based on the nationally representative Longitudinal Ageing Study (2016-2017) data that adopted a multistage stratified area probability cluster sampling to select respondents. The outcome variables used in this analysis were 'had any GM' and 'sought treatment for any GM.' Women with any morbidity such as per vaginal bleeding, foul-smelling vaginal discharge, uterus prolapses, mood swings/irritability, fibroid/cyst, and dry vagina causing painful intercourse were considered to have any GM. Of the respondents with GM, who sought a doctor's consultation or treatment were considered 'sought treatment for any GM.' Binary logistic regression was conducted to examine the adjusted effect of socioeconomic and demographic predictors of GM and treatment-seeking. Stata (V 16) was used for statistical analyses with a 5% significance level. RESULTS: Fifteen percent of the women had any GM, and only 41% of them sought treatment. Age, marital status, education, number of pregnancies, hysterectomy, involvement in household decision-making, social group, religion, wealth status, and region were significantly associated with GM. The odds of treatment-seeking were higher among women with 10+ years of schooling (OR 1.66, CI 1.23, 2.23), with hysterectomy (OR 7.36, CI 5.92, 9.14), with five-plus pregnancies (OR 1.25, CI 0.96, 1.64), and those from the richest (OR 1.91, CI 1.40, 2.60) households than their respective counterparts. CONCLUSION: Many older adult women experience GM, and treatment-seeking is inadequate. The GM prevalence and treatment-seeking vary considerably by socioeconomic and demographic characteristics. Results suggest community-level awareness generation and the inclusion of this otherwise ignored group in programs targeting better health and wellbeing of women.


Asunto(s)
Ginecología , Embarazo , Femenino , Humanos , Anciano , Salud de la Mujer , Derechos de la Mujer , Escolaridad , Prevalencia , India/epidemiología
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