Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 29
Filtrar
Más filtros

País/Región como asunto
Tipo del documento
Intervalo de año de publicación
1.
Biol Reprod ; 105(4): 808-821, 2021 10 11.
Artículo en Inglés | MEDLINE | ID: mdl-34159367

RESUMEN

The outbreak of the coronavirus disease 2019 (COVID-19) has created havoc on the socio-economic aspect of the world. With billions of lives being affected by this wrecking pandemic, global fertility services were also not left untouched by its impact. The possibility of sexual transmission of SARS-CoV-2 virus, its impact on male and female fertility, pregnancy, its potential teratogenic effect, and handling of gametes in the clinical laboratories were major concerns among reproductive medicine specialists, which led down all the reproductive health services, including IUI, IVF/ICSI in most of the countries. Even the people did not intend to conceive during the pandemic crisis and were hesitant to avail such services. Discrete evidence regarding the pathophysiology of COVID-19 infection and its impact on the human reproductive system is not very clear. In this review article, we intend to incorporate all the evidence related to the COVID-19 infection and its impact on human reproduction available to date. It is our responsibility to provide rightful information and to keep our patients familiar with the existing lack of clear evidence. In this COVID-19 era, it is important that the fertility management be prioritized in sub-fertile couples with diminished fertility reserve and high-risk conditions, like malignancies, that may affect their long-term fertility prospects.


Asunto(s)
COVID-19/complicaciones , Genitales , Infertilidad/etiología , Pandemias , Medicina Reproductiva/tendencias , Fenómenos Fisiológicos Reproductivos , Técnicas Reproductivas Asistidas/tendencias , Animales , Femenino , Preservación de la Fertilidad , Humanos , Infertilidad/terapia , Masculino , Embarazo
2.
Appl Microbiol Biotechnol ; 105(24): 9047-9067, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-34821965

RESUMEN

The rise in multi-drug resistant bacteria and the inability to develop novel antibacterial agents limits our arsenal against infectious diseases. Antibiotic resistance is a global issue requiring an immediate solution, including the development of new antibiotic molecules and other alternative modes of therapy. This article highlights the mechanism of bacteriophage treatment that makes it a real solution for multidrug-resistant infectious diseases. Several case reports identified phage therapy as a potential solution to the emerging challenge of multi-drug resistance. Bacteriophages, unlike antibiotics, have special features, such as host specificity and do not impact other commensals. A new outlook has also arisen with recent advancements in the understanding of phage immunobiology, where phages are repurposed against both bacterial and viral infections. Thus, the potential possibility of phages in COVID-19 patients with secondary bacterial infections has been briefly elucidated. However, significant obstacles that need to be addressed are to design better clinical studies that may contribute to the widespread use of bacteriophage therapy against multi-drug resistant pathogens. In conclusion, antibacterial agents can be used with bacteriophages, i.e. bacteriophage-antibiotic combination therapy, or they can be administered alone in cases when antibiotics are ineffective.Key points• AMR, a consequence of antibiotic generated menace globally, has led to the resurgence of phage therapy as an effective and sustainable solution without any side effects and high specificity against refractory MDR bacterial infections.• Bacteriophages have fewer adverse reactions and can thus be used as monotherapy as well as in conjunction with antibiotics.• In the context of the COVID-19 pandemic, phage therapy may be a viable option.


Asunto(s)
Bacteriófagos , COVID-19 , Antibacterianos/uso terapéutico , Humanos , Pandemias , Estudios Prospectivos , SARS-CoV-2
3.
J Infect Dev Ctries ; 18(1): 27-33, 2024 Jan 31.
Artículo en Inglés | MEDLINE | ID: mdl-38377088

RESUMEN

INTRODUCTION: Coronavirus disease 2019 (COVID-19) has infected millions of people globally. Many recent studies have suggested that the ABO blood type may contribute to COVID-19 infection immunopathogenesis. We aimed to determine the proportional distribution of COVID-19 infection among ABO blood types. METHODOLOGY: This retrospective research was conducted in the city of Jodhpur (Rajasthan), India. The research involved 1140 COVID-19 patients, whose medical records were available in blood banks. The data was evaluated statistically using IBM SPSS 26. RESULTS: The proportion of blood group B among infected patients was highest (37.36%). Among all the cases, blood group A had the highest odds ratio of 1.062 (CI 95%, 0.92-1.21, p = 0.412). All versus one blood group analysis also showed that blood group A (odds ratio = 1.062 [CI 95%, 0.92-1.22] p = 0.412) was more likely to be infected with COVID-19 than the remaining blood groups. In the year 2021, blood group B had the highest risk of COVID-19 infection (odds ratio = 1.138). CONCLUSIONS: Based on our findings, the blood groups A and B are more likely to be infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The overall average age for COVID-19 infection was lower, and the number of incidences in female patients was higher in 2021, relative to 2020. We found no evident relationship between COVID-19 vulnerabilities and blood group. A summary of the research is presented in Supplementary Figure 1.


Asunto(s)
COVID-19 , SARS-CoV-2 , Humanos , Femenino , COVID-19/epidemiología , Estudios Retrospectivos , Sistema del Grupo Sanguíneo ABO , India/epidemiología
4.
Appl Biochem Biotechnol ; 195(9): 5568-5582, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-35666381

RESUMEN

Urinary tract infections (UTIs) are among the most prevalent bacterial infections worldwide, with 11% of the global population getting infected every year. These infections are largely attributed to quorum sensing (QS)-dependent ability of pathogens to form biofilms in the urinary tract. Antimicrobial resistance is increasing, and the use of antimicrobial medicines in the future is yet uncertain. The desert medicinal plants have great potential to treat several diseases as per the available ethnobotanical database. Some of these plants have been used in folklore medicines to treat urinary tract infections also. There are many bioactive compounds derived from these desert medicinal plants that have been documented to possess antimicrobial as well as antibiofilm activity against uropathogens. The minimum biofilm inhibitory concentration (MBIC) of these plant extracts have been reported in the range of 31.5-250 µg/mL. The rising prevalence of drug-resistant diseases necessitates standardised modern analytical technologies to detect and isolate novel bioactive compounds from medicinal plants. This review seeks to combine the studies of desert plants with antimicrobial and anti-quorum sensing properties, supporting their sustainable use in treatment of urinary tract infections.


Asunto(s)
Antiinfecciosos , Plantas Medicinales , Infecciones Urinarias , Biopelículas , Percepción de Quorum , Extractos Vegetales/farmacología , Extractos Vegetales/uso terapéutico , Antiinfecciosos/farmacología , Infecciones Urinarias/tratamiento farmacológico , Antibacterianos/farmacología
5.
Future Microbiol ; 18: 323-334, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-37140267

RESUMEN

Background: The present study evaluates the efficacy of bacteriophage therapy for urinary tract infection (UTI) in rats. Methods: UTI was established by inoculating Escherichia coli (100 µl) at a concentration of 1.5 × 108 CFU/ml per urethra via a cannula in different groups of rats. For treatment, phage cocktails (200 µl) were administered at varying concentrations of 1 × 108 PFU/ml, 1 × 107 PFU/ml and 1 × 106 PFU/ml. Results: The two doses of phage cocktail at the first two concentrations resulted in the cure of UTI. However, the lowest concentration of the phage cocktail warranted more doses to eradicate the causative bacteria. Conclusion: The quantity, frequency and safety of doses could be optimized in a rodent model using the urethral route.


Antimicrobial resistance is primarily caused by antibiotic overuse and misuse, which results in a decline in the ability of antibiotics to treat infections. Urinary tract infections (UTIs) are common but difficult to treat, as they are frequently caused by multidrug-resistant bacteria. Escherichia coli is a common cause of UTIs. Bacteriophages are a potentially viable alternative for the treatment of bacterial infections, and despite the numerous benefits of using phages as antibacterial therapeutics, there are surprisingly few original research articles based on clinical trials, specifically against UTIs. In this study, the efficiency of a customized bacteriophage cocktail for the treatment of UTIs, with varied doses administered directly into the urinary bladder of rats, was evaluated. At higher concentrations, UTIs were completely eradicated after two doses of the bacteriophage cocktail. However, at lower concentrations, additional doses were required to eradicate the infection. Phage therapy appears to have therapeutic potential, and this study indicates the potential frequency of dosages at appropriate concentrations. Phage therapy was both effective and safe.


Asunto(s)
Bacteriófagos , Infecciones por Escherichia coli , Terapia de Fagos , Infecciones Urinarias , Escherichia coli Uropatógena , Ratas , Animales , Infecciones por Escherichia coli/microbiología , Infecciones Urinarias/tratamiento farmacológico , Antibacterianos/farmacología
6.
Indian J Radiol Imaging ; 33(1): 98-100, 2023 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-36855726

RESUMEN

Aim To determine the effectiveness of the first trimester Samrakshan protocol for the identification of pregnant women at high risk for preterm pre-eclampsia (PE). Methods Samrakshan uses a protocol that integrates routine first-trimester ultrasound assessment at 11 to 14 gestation weeks with the measurement of mean arterial blood pressure and mean uterine artery pulsatility index assessment to determine a customized risk for preterm PE and fetal growth restriction. Based on the risk assessment, pregnant women are classified as high or low risk. Results The protocol had a high specificity (90.4%, 95% CI: 89.4%, 91.2%) and negative predictive value (98.1%, 95% CI: 97.6%, 99%) for preterm PE. The odds ratio and positive likelihood ratio for preterm PE were 16.7 (95% CI: 12.3, 22.6) and 6.64 (95% CI: 5.77, 7.63), respectively. Conclusions The positive likelihood ratio and odds ratios indicate that pregnant women identified as high risk for preterm PE using the first-trimester protocol of Samrakshan are significantly more likely to develop preterm PE than low-risk women.

7.
Physiol Mol Biol Plants ; 18(2): 185-90, 2012 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-23573056

RESUMEN

Standardization of biomass production in different vessels and bioreactor using explants and media for growth, total phenolic content and antioxidant capacity of shoot culture of Bacopa monnieri is described. Maximum number of shoots per explant, higher explants response irrespective of the type of explants, and higher shoot length was obtained on MS medium containing BAP (2.5 mg l(-1)) and IAA (0.01 mg l(-1)) with 3 % sucrose. This medium was selected by varying BAP concentration and recorded optimal for shoot culture on gelled medium. The condition of 0.5 cm explant size and 20 explant/40 ml (1 explant/2 ml) was optimal for high explant response, number of shoots per explant regenerated and shoots length. Among the different vessels used, maximum growth index was achieved in Growtek bioreactor (10.0) followed by magenta box (9.16), industrial glass jar (7.7) and conical flask (7.2). The cultures grown in conical flask (100 ml) were used as control. The total phenolic content and antioxidant capacity of in vitro grown plants was higher to that recorded for in vivo material. Among in vitro regenerated plants, the activity was maximal in the tissues grown in 250 ml conical flask. The most critical function for vessels is to support the optimum profusion (growing area for maximum growth) of shoots and for B. monnieri, Growtek bioreactor supported 1980 shoots l(-1) medium as compared to control (938 shoots l(-1)). Growtek bioreactor was considered effective system to produce B. monnieri biomass in culture without loss of antioxidant properties.

8.
BMC Chem ; 16(1): 61, 2022 Aug 17.
Artículo en Inglés | MEDLINE | ID: mdl-35978438

RESUMEN

INTRODUCTION: Aurora-A kinase is associated with the Aurora kinase family which has been considered a striking anticancer target for the treatment of human cancers. OBJECTIVE: To design, synthesize, anticancer evaluation, and docking studies of novel 2-(1-isonicotinoyl-3-phenyl-1H-pyrazol-4-yl)-3-phenylthiazolidin-4-one derivatives as Aurora-A Kinase inhibitors. METHOD: A total of 21 Pyrazole derivatives P (1-21) were synthesized by using the Vilsmeier Haack reagent which was characterized by FT-IR, 1H NMR, 13C NMR, and Mass spectroscopy. The synthesized derivatives were evaluated for their potential in vitro anticancer activity by MTT assay and Aurora-A kinase inhibition assay. RESULTS: The cytotoxicity assay (MTT assay) showed that compound P-6 exhibited potent cytotoxicity (IC50 = 0.37-0.44 µM) against two cancer (HCT 116 and MCF-7) cell lines, which were comparable to the standard compound, VX-680. Compound P-6 also showed inhibition of Aurora-A kinase with an IC50 value of 0.11 ± 0.03 µM. A Docking study was done to compound P-6 and P-20 into the active site of Aurora A kinase, in order to get the probable binding model for further study. CONCLUSION: A series of 21 novel pyrazole derivatives P(1-21) were designed, synthesized, in vitro anticancer evaluation, and docking studies for Aurora A kinase inhibition. The results established that P-6 is a prospective aspirant for the development of anticancer agents targeting Aurora-A kinase.

9.
J Med Case Rep ; 16(1): 482, 2022 Dec 28.
Artículo en Inglés | MEDLINE | ID: mdl-36575475

RESUMEN

BACKGROUND: Fetal midgut volvulus is an uncommon yet potentially life-threatening condition. Prenatal diagnosis may pose a challenge, due to the paucity of specific signs and symptoms. Timely prenatal diagnosis of this condition is imperative to prevent fetal mortality and morbidity. CASE PRESENTATION: We present a rare case report of fetal midgut volvulus, malrotation, and intestinal obstruction at 32 weeks of gestation in a 31-year-old multigravida Indian patient who presented with decreased fetal movements. Fetal ultrasound revealed midgut volvulus with proximal bowel obstruction and polyhydramnios. The patient underwent emergency surgery, which revealed intestinal malrotation and confirmed the diagnosis of midgut volvulus. Untwisting of the volvulus was done followed by Ladd's procedure. Follow-up postoperative ultrasound was unremarkable. CONCLUSIONS: Delay in the diagnosis of fetal midgut volvulus leads to poor fetal and maternal outcomes. Hence, it is vital for radiologists, sonologists, and obstetricians to be aware of this condition while performing fetal sonography. Prompt diagnosis and surgical intervention are vital to reduce the morbidity and mortality associated with this condition.


Asunto(s)
Obstrucción Intestinal , Vólvulo Intestinal , Embarazo , Femenino , Humanos , Adulto , Vólvulo Intestinal/diagnóstico por imagen , Vólvulo Intestinal/cirugía , Vólvulo Intestinal/complicaciones , Diagnóstico Prenatal , Obstrucción Intestinal/etiología , Ultrasonografía Prenatal/efectos adversos , Feto
10.
Front Microbiol ; 13: 965053, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36016776

RESUMEN

Urinary tract infection (UTI) is a common infectious disease that affects men and women. It is a significant health concern due to multidrug-resistant (MDR) organisms. Therefore, it is necessary to have a current understanding of the antibiotic susceptibility (AS) pattern of uropathogens to manage UTI effectively. Since the bacterial pathogen causing UTI and its AS vary with time and place, the prevailing AS pattern of the causative agents are essential for empirical antibiotic therapy. This study aims to determine the prevalence and AS of uropathogens isolated from UTI patients in the eastern part of Northern India. The study was carried out between November 2018 and December 2019. Clean catch midstream urine samples were collected and processed using standard guidelines for microbiological procedures. Positive microbiological cultures were found in 333 of the 427 patients, where 287 were gram-negative bacteria (GNB), and 46 were gram-positive bacteria (GPB). Females had a higher prevalence of UTI (60.7%) than males (39.3%) (p = 0.00024). The most susceptible age group in females was 18-50 years as compared to males, whereas at the age of 51-80 years and >80 years males were more susceptible than females (p = 0.053). The most prevalent pathogen identified were Escherichia coli (55.0%), followed by Proteus sp. (6.9%), Klebsiella pneumoniae (6.6%), Pseudomonas aeruginosa (6.3%), of which 96.0% were MDR bacteria. The susceptibility pattern of our study also revealed that amikacin, gentamycin and imipenem were the most effective drugs against GNB. In contrast, nitrofurantoin, vancomycin, and chloramphenicol were the most effective drugs against GPB. According tothe findings, MDR pathogens are very much prevalent. Since UTI is one of the most frequent bacterial diseases, proper management necessitates extensive investigation and implementation of antibiotic policy based on AS patterns for a particular region.

11.
Plants (Basel) ; 11(2)2022 Jan 11.
Artículo en Inglés | MEDLINE | ID: mdl-35050071

RESUMEN

Rice-wheat (RW) rotation is the largest agriculture production system in South Asia with a multifaceted role in maintaining the livelihood of people. The customary practices and indiscriminate use of synthetic fertilizers have culminated in the decline of its productivity and profitability during the past two decades, thus affecting the sustainability of wheat. Safe Rock® Minerals (SRM) is a multi-nutrient rich natural rock mineral with great potential to manage soil degradation, reducing the input of fertilizers, improving soil fertility, and plant health. Thus, a field trial was conducted at the research farm of ICAR-Indian Agricultural Research Institute, New Delhi from 2016 to 2018 to evaluate the impact of Safe Rock® Minerals (SRM) on biometric parameters, productivity, quality, and nutrient uptake by conventional wheat and System of Wheat Intensification (SWI) in the wheat-rice cropping system. The results indicate that SWI performed better in terms of growth, yield, and quality parameters than conventional wheat. Among nutrient management practices; the highest growth, yield, and yield attributes of wheat were achieved with the use of SRM application 250 kg ha-1 + 100% Recommended Dose of Fertilizer (RDF). SRM application also increased grain protein content significantly. In conclusion, the integrated use of SRM with organic manures can serve as an eco-friendly approach for sustainable wheat production.

12.
Indian J Radiol Imaging ; 32(1): 30-37, 2022 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-35722649

RESUMEN

Aim The aim of the study is to determine improvements in perinatal mortality at the end of the first 2 years from the initiation of the Samrakshan program of the Indian Radiological and Imaging Association. Methods Samrakshan is a screening program of pregnant women that uses trimester-specific risk assessment protocols including maternal demographics, mean arterial pressure, and fetal Doppler studies to classify women as high risk or low risk for preterm preeclampsia (PE) and fetal growth restriction (FGR). Low dose aspirin 150 mg daily once at bedtime was started for pregnant women identified as high risk in the 11-13 6/7 weeks screening. The third-trimester screening focused on the staging of FGR and protocol-based management for childbirth and risk assessment for PE. Outcomes of childbirth including gestational age at delivery, development of PE, and perinatal mortality outcomes were collected. Results Radiologists from 38 districts of 16 states of India participated in the Samrakshan program that screened 2,816 first trimester, 3,267 second trimester, and 3,272 third trimester pregnant women, respectively. At 2 years, preterm PE was identified in 2.76%, preterm births in 19.28%, abnormal Doppler study in 25.76% of third trimester pregnancies, and 75.32% of stage 1 FGR delivered at term. The neonatal mortality rate was 9.86/1,000 live births, perinatal mortality rate was 18.97/1,000 childbirths, and maternal mortality was 58/100,000 live births compared with 29.5, 36, and 113, respectively in 2016. Conclusion Fetal Doppler integrated antenatal ultrasound studies in Samrakshan led to a significant reduction in preterm PE rates, preterm birth rates, and a significant improvement in mean birth weights. Perinatal, neonatal, and maternal mortality rates are significantly better than the targets for 2030 set by the Sustainable Development Goals-3.

13.
Cancer ; 117(11): 2559-68, 2011 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-21484777

RESUMEN

BACKGROUND: Long-term survivors of childhood cancer are at risk for fatigue, sleep problems, and neurocognitive impairment, although the association between these outcomes has not been previously examined. METHODS: Outcomes were evaluated in 1426 survivors from the Childhood Cancer Survivor Study using a validated Neurocognitive Questionnaire. Relative risks for neurocognitive impairment were calculated using demographic and treatment factors, and survivors' report on the Functional Assessment of Chronic Illness Therapy-Fatigue, the Short Form-36 Vitality Scale, the Pittsburgh Sleep Quality Index, and the Epworth Sleepiness Scale. RESULTS: Neurocognitive impairment was identified in >20% of survivors, using sibling-based norms for comparison. Multivariate logistic regression models revealed that fatigue (risk ratio [RR], 1.34; 95% confidence interval [CI], 1.13-1.59), daytime sleepiness (RR, 1.68; 95% CI, 1.55-1.83), poor sleep quality (RR, 1.23; 95% CI, 1.01-1.49), and decreased vitality (RR, 1.75; 95% CI 1.33-2.30) were all associated with impaired task efficiency. Likewise, fatigue (RR, 1.77; 95% CI, 1.23-2.55), sleepiness (RR, 1.38; 95% CI, 1.14-1.67), and decreased vitality (RR, 3.08; 95% CI, 1.98-4.79) were predictive of emotional regulation problems. Diminished organization was associated with increased sleepiness (RR, 1.80; 95% CI, 1.31-2.48) and decreased vitality (RR, 1.90; 95% CI, 1.37-2.63). Impaired memory was associated with poor sleep quality (RR, 1.45; 95% CI, 1.19-1.76), increased sleepiness (RR, 2.05; 95% CI, 1.63-2.58), and decreased vitality (RR, 2.01; 95% CI, 1.42-2.86). The impact of fatigue, sleepiness, sleep quality, and vitality on neurocognitive outcomes was independent of the effects of cranial radiation therapy, steroids and antimetabolite chemotherapy, sex, and current age. CONCLUSIONS: Neurocognitive function in long-term survivors of childhood cancer appears particularly vulnerable to the effects of fatigue and sleep disruption. These findings suggest sleep hygiene should be emphasized among survivors, as it may provide an additional mechanism for intervention to improve neurocognitive outcomes.


Asunto(s)
Disfunción Cognitiva/complicaciones , Fatiga/complicaciones , Neoplasias/complicaciones , Neoplasias/epidemiología , Trastornos del Sueño-Vigilia/complicaciones , Sobrevivientes , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Calidad de Vida , Factores de Riesgo , Hermanos , Encuestas y Cuestionarios , Adulto Joven
14.
J Pediatr Hematol Oncol ; 32(2): 113-8, 2010 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-20098337

RESUMEN

Neurobehavioral problems after chemotherapy treatment for pediatric acute lymphoblastic leukemia (ALL) have been a recent focus of investigation. This study extended previous research that suggested oxidative stress as a potential mechanism for chemotherapy-induced central nervous system injury by examining early markers of oxidative stress in relation to subsequent neurobehavioral problems. Oxidized and unoxidized components of phosphatidylcholine (PC) were measured in the cerebrospinal fluid of 87 children with ALL at diagnosis, induction, and consolidation. Behavioral assessments were conducted postconsolidation and at the end of chemotherapy. Results revealed a significant association between physiologic reactivity (high vs. low PC changes from diagnosis) and behavioral outcomes (high vs. low pathology). Elevated oxidized PC fraction change was predictive of increased problems with aggression at the end of therapy as well as postconsolidation adaptability. Furthermore, symptoms of hyperactivity systematically changed over time in relation to both unoxidized PC and oxidized PC fraction reactivity. These findings suggest that symptoms of behavioral problems occur early in the course of chemotherapy and that increases in the cerebrospinal fluid PC markers of oxidative stress during induction and consolidation may help to predict certain future behavioral problems.


Asunto(s)
Antineoplásicos/efectos adversos , Encéfalo/efectos de los fármacos , Conducta Infantil/efectos de los fármacos , Estrés Oxidativo , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamiento farmacológico , Adaptación Psicológica , Adolescente , Niño , Preescolar , Femenino , Humanos , Masculino , Metotrexato/efectos adversos , Oxidación-Reducción , Fosfatidilcolinas/metabolismo , Leucemia-Linfoma Linfoblástico de Células Precursoras/metabolismo , Leucemia-Linfoma Linfoblástico de Células Precursoras/psicología
15.
Drug Deliv ; 27(1): 888-899, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32551978

RESUMEN

The present study was focused on investigating niosomal gels loaded with cholinergic drug; pilocarpine HCl, for prolonged precorneal residence time and improved bioavailability for glaucoma treatment. Pilocarpine HCl niosomes were prepared using various nonionic surfactants (span 20, span 60 and span 80), in the presence of cholesterol in different molar ratios by ether injection method. The selected formulations were incorporated into carbopol 934 and locust bean gum-based gels. TEM analysis confirmed that niosomes formed were spherical in shape and has a definite internal aqueous space with uniform particle size. Formulation F4 composed of span 60 and cholesterol (1:1) gave the highest entrapment (93.26 ± 1.75%) and slower release results after 8 hours (Q8h = 60.35 ± 1.87%) among other formulations. The in-vitro drug permeation studies showed that there was a prolonged release of drug from niosomal gels as compared to niosomes itself. Considering the in-vitro drug release, niosomal gel formulation G2 was the best among the studied formulations. The release data were fitted to an empirical equation, which indicated that the release follows non-Fickian diffusion mechanism. The stability study revealed that incorporation of niosomes in gel increased their stability than the niosome itself. No signs of redness, inflammation, swelling or increased tear production were observed over the study period for tested formulation by Draize's test. The intraocular pressure (IOP) lowering activity of G2 formulation showed relative bioavailability 2.64 times more than bioavailability of marketed Pilopine HS® gel. These results suggest that the niosomal gels containing pilocarpine HCl are promising ocular carriers for glaucoma treatment.


Asunto(s)
Sistemas de Liberación de Medicamentos/métodos , Presión Intraocular/efectos de los fármacos , Liposomas/química , Pilocarpina/administración & dosificación , Pilocarpina/farmacología , Administración Oftálmica , Animales , Química Farmacéutica/métodos , Liberación de Fármacos , Estabilidad de Medicamentos , Glaucoma/tratamiento farmacológico , Hexosas/química , Tamaño de la Partícula , Pilocarpina/farmacocinética , Conejos
16.
Pediatr Blood Cancer ; 53(4): 551-6, 2009 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-19499584

RESUMEN

BACKGROUND: Neurocognitive sequelae following treatment for pediatric acute lymphoblastic leukemia (ALL) has been reported in a significant proportion of survivors, including those treated only with chemotherapy. Early identification of children "at risk" for neurocognitive problems is not yet reliable. Biomarkers of oxidative stress (e.g., oxidated phosphatidylcholine) in cerebral spinal fluid (CSF) have been correlated with intensity of methotrexate (MTX) treatment, suggesting an association with acute central nervous system toxicity. PROCEDURE: This study examined the association between oxidized CSF phospholipids and executive functions throughout chemotherapy. Measures of oxidative stress and executive functions were examined in 88 children newly diagnosed with ALL. The children were followed over 3 years with neurocognitive testing and parent ratings of executive functions. RESULTS: Results demonstrated an association between increased oxidative stress following induction and consolidation and decreased executive function 2 years later. Younger age at diagnosis was associated with both an increase in oxidative stress and in executive dysfunction; younger age was associated with poorer ability to organize materials in one's environment (r(48) = 0.28, P < 0.05) and with greater oxidated phosphatidylcholine in CSF at the end of chemotherapy (r(48) = -0.27, P < 0.05). As such, younger age appears to be the most prominent moderator of neurocognitive decline. CONCLUSIONS: These results link functional changes to CSF biomarkers and underscore the importance of monitoring cognitive development in young children treated for ALL. Children with less advanced central nervous system development may be particularly vulnerable to the effects of chemotherapy.


Asunto(s)
Metotrexato/uso terapéutico , Estrés Oxidativo , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamiento farmacológico , Adolescente , Niño , Preescolar , Emociones , Femenino , Humanos , Masculino , Memoria , Leucemia-Linfoma Linfoblástico de Células Precursoras/metabolismo , Leucemia-Linfoma Linfoblástico de Células Precursoras/psicología , Conducta Verbal
17.
J Midlife Health ; 10(2): 70-74, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31391755

RESUMEN

BACKGROUND: Sexual health is the most important aspect of person's well being, self-esteem and quality of life. Sexual pleasure leads to enhanced conjugal relationships and an overall healthy psychological state. There is paucity of data on sexual health of postmenopausal women. AIMS AND OBJECTIVES: To assess the prevalence and determinants of sexual health in postmenopausal women of North India. MATERIALS AND METHODS: The study was conducted over a period of 18 months, from January 2016 to June 2017. Standard FSFI-6 questionnaire and various socio-demographic factors were used to analyse the sexual health of 110 menopausal women. RESULTS: 80.9% postmenopausal women reported sexual dysfunction (SD). We found more sexual dysfunction in postmenopausal women with increasing age and increasing duration of menopause. Satisfied past sexual experience, joint family structure, low socioeconomic and education status were found to be important determinants of sexual health of postmenopausal females. Parity, substance use and past medical and gynaecological history of participants and various partner's factors like medical disorders, substance use and sexual disorders showed no association with sexual health in postmenopausal females. CONCLUSION: Sexuality varies with cultural and social differences across the globe. The prevalence of female sexual dysfunction in our study is much higher because Indian women are suppressed, self conscious, inhibited and hesistant to talk about their sexual problems with health care professionals. Also revalidation of the FSFI tool for Indian population is required. Further studies are needed to evaluate the sexual health in postmenopausal women.

18.
J Pediatr ; 152(1): 101-5, 2008 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-18154909

RESUMEN

OBJECTIVE: To test the hypothesis that 5,10-methylenetetrahydroreductase (MTHFR) polymorphisms can partially explain the individual variation in developing attention-deficit/hyperactivity disorder (ADHD) after acute lymphoblastic leukemia (ALL) therapy. STUDY DESIGN: Parents of 48 survivors of childhood ALL completed a clinical diagnostic process to identify subtypes of ADHD. Genotyping was performed with peripheral blood DNA for MTHFR (C677T and A1298C) polymorphisms. RESULTS: Eleven of the 48 patients (22.9%) had scores consistent with the inattentive symptoms of ADHD. Patients with genotypes related to lower folate levels (11 out of 39; 39.2%) were more likely to have ADHD. The A1298C genotype appeared to be the predominant linkage to the inattentive symptoms, leading to a 7.4-fold increase in diagnosis, compared with a 1.3-fold increase for the C677T genotype. Age at diagnosis and sex were not associated with inattentiveness. CONCLUSIONS: Preliminary data imply a strong relationship between MTHFR polymorphisms and the inattentive symptoms of ADHD in survivors of childhood ALL.


Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad/genética , Metilenotetrahidrofolato Deshidrogenasa (NAD+)/genética , Polimorfismo Genético , Leucemia-Linfoma Linfoblástico de Células Precursoras , Adulto , Antimetabolitos Antineoplásicos/administración & dosificación , Antimetabolitos Antineoplásicos/efectos adversos , Trastorno por Déficit de Atención con Hiperactividad/enzimología , Niño , Femenino , Antagonistas del Ácido Fólico/administración & dosificación , Antagonistas del Ácido Fólico/efectos adversos , Predisposición Genética a la Enfermedad , Genotipo , Humanos , Masculino , Metotrexato/administración & dosificación , Metotrexato/efectos adversos , Metilenotetrahidrofolato Deshidrogenasa (NAD+)/efectos de los fármacos , Padres , Polimorfismo Genético/efectos de los fármacos , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamiento farmacológico , Encuestas y Cuestionarios , Sobrevivientes
19.
Pediatr Blood Cancer ; 51(2): 275-9, 2008 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-18421716

RESUMEN

BACKGROUND: Combined cisplatin chemotherapy and cranial irradiation for treatment of medulloblastoma in children can cause significant ototoxicity and impair cognitive function and quality of life. We have previously demonstrated the conformal technique of intensity-modulated radiation therapy (IMRT) to reduce ototoxicity, however, it has been suggested that IMRT may increase risk of cognitive deficits compared to conventional radiation therapy (CRT). This study compared the impact of the two treatments on measures of neurocognitive functioning. PROCEDURE: Twenty-five pediatric patients with medulloblastoma were treated either with CRT or IMRT. In addition they received neurocognitive assessments to evaluate long-term functional outcome. Statistical analyses between the two groups were conducted to compare levels and profiles of performance on tests not confounded with hearing loss. RESULTS: When compared to CRT, children treated with IMRT did not perform more poorly on any of the measures. Both groups' mean performance was significantly lower than published norms on several of the measures employed. CONCLUSION: The benefit of reduced ototoxicity with IMRT does not appear to be at the cost of a decline in nonverbal intellectual abilities, visual-spatial skills, processing speed, or fine motor dexterity when compared to CRT in children with medulloblastoma.


Asunto(s)
Neoplasias Cerebelosas/radioterapia , Cognición/efectos de la radiación , Pérdida Auditiva Sensorineural/etiología , Meduloblastoma/radioterapia , Radioterapia de Intensidad Modulada/efectos adversos , Adolescente , Neoplasias Cerebelosas/psicología , Niño , Preescolar , Femenino , Humanos , Masculino , Meduloblastoma/psicología
20.
Artículo en Inglés | MEDLINE | ID: mdl-29697033

RESUMEN

BACKGROUND: The benzimidazole ring is an important pharmacophore in modern drug discovery. Mannich reaction is one of the versatile reaction widely used in organic synthesis. Mannich base derivatives play an important role in medical field with diverse biological actions. OBJECTIVE: A series of N-(benzimidazol-1-ylmethyl)-4-chlorobenzamide derivatives (3a- 3m) were synthesized and evaluated for anti-inflammatory and antimicrobial potential. METHOD: Mannich reaction was used to synthesize N-(benzimidazol-1-ylmethyl)-4- chlorobenzamide analogues. The structures of novel target compounds were elucidated by spectral and analytical techniques and screened for in vivo anti-inflammatory activity and ulcerogenic activity. In addition, the prepared derivatives were also evaluated for in vitro antimicrobial activity against gram negative, gram positive and fungal strains. Further, in silico studies were carried out to define the interaction of the title compounds with COX-2 enzyme and microbial protein. RESULTS: The results revealed that out of thirteen molecules, compound 3a (containing chloromethyl substituent at 2-position of benzimidazole) showed significant antiinflammatory effect at a dose of 100 mg/kg p.o. and the experimental data was statistically significant at p≤0.05 level. Diclofenac sodium was taken as standard drug for antiinflammatory activity. Furthermore, derivative 3e (containing 2-chlorophenyl moiety at 2- position of benzimidazole scaffold) was found to be the most effective antimicrobial compound among the synthesized derivatives. Ciprofloxacin and clotrimazole were used as reference antimicrobial agents. Results from in vivo and in vitro studies of synthesized analogues were found to be in good correlation with in silico study. CONCLUSION: These results designate that N-(Benzimidazol-1-ylmethyl)-4-chlorobenzamide analogues, substituted with halogen functionality, could be used as potential lead for designing more potent anti-inflammatory and antimicrobial agents.


Asunto(s)
Antiinfecciosos , Antiinflamatorios , Bencimidazoles , Edema/tratamiento farmacológico , Animales , Antiinfecciosos/química , Antiinfecciosos/farmacología , Antiinfecciosos/uso terapéutico , Antiinflamatorios/química , Antiinflamatorios/farmacología , Antiinflamatorios/uso terapéutico , Aspergillus niger/efectos de los fármacos , Aspergillus niger/crecimiento & desarrollo , Bacterias/efectos de los fármacos , Bacterias/crecimiento & desarrollo , Bencimidazoles/química , Bencimidazoles/farmacología , Bencimidazoles/uso terapéutico , Candida albicans/efectos de los fármacos , Candida albicans/crecimiento & desarrollo , Carragenina , Edema/inducido químicamente , Femenino , Masculino , Simulación del Acoplamiento Molecular , Ratas Wistar , Pruebas de Toxicidad Aguda
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA