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1.
Artigo em Inglês | MEDLINE | ID: mdl-39323344

RESUMO

INTRODUCTION: Dengue fever is prevalent in tropical nations, especially India. Leucopenia and thrombocytopenia are distinctive features of acute dengue fever that revert to normal levels after the patient's recovery. Dengue fever is associated with numerous unusual clinical manifestations of different body systems. Additionally, the emergence of severe thrombocytosis following thrombocytopenia is extremely rare. Based on our extensive knowledge, only three cases similar to this have been documented in the literature. CASE REPORT: Here, we present a case of a 36-year-old healthy man who had acute dengue and subsequently developed severe reactive thrombocytosis. The patient was treated conservatively and discharged. Subsequently, he developed thrombocytosis. Aspirin was given for a short period to alleviate any potential repercussions. CONCLUSION: Thrombocytosis, a rare consequence of dengue infection, is usually asymptomatic. Nevertheless, ongoing monitoring of dengue patients is required to avoid complications.

2.
Healthcare (Basel) ; 12(17)2024 Aug 24.
Artigo em Inglês | MEDLINE | ID: mdl-39273716

RESUMO

This study aimed to determine COVID-19 recovery time and identify predictors among hospitalized patients in the Dhanusha District of Madhesh Province, Nepal. This hospital-based longitudinal study involved 507 COVID-19 patients admitted to three distinct medical facilities for therapeutic intervention between April and October 2021. Data were collected for patient demography, symptoms, vital signs, oxygen saturation levels, temperatures, heart rates, respiratory rates, blood pressure measurements, and other health-related conditions. Kaplan-Meier survival curves estimated the recovery time, and a Cox proportional hazard model was used to identify the predictors of recovery time. For the total participants, mean age was 51.1 (SD = 14.9) years, 68.0% were males. Of the total patients, 49.5% recovered, and 16.8% died. The median for patient recovery was 26 days (95% CI: 25.1-26.7). Patients with severe or critical conditions were less likely to recover compared to those with milder conditions (hazard ratio (HR) = 0.34, 95% CI: 0.15-0.79; p = 0.012). In addition, an increase in oxygen saturation was associated with an elevated likelihood of recovery (HR = 1.09, 95% CI = 1.01-1.17, p = 0.018). This study underscores the need for early admission to hospital and emphasizes the targeted interventions in severe cases. Additionally, the results highlight the importance of optimizing oxygen levels in COVID-19 patient care.

3.
Int J Mycobacteriol ; 13(3): 299-306, 2024 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-39277893

RESUMO

BACKGROUND: Tuberculous meningitis (TBM) is a challenging condition to diagnose, and current laboratory methods have limitations, especially in developing countries. This study evaluated the diagnostic utility of the Lancet consensus scoring (LCS) system in suspected TBM cases at a tertiary care center in India. METHODS: The clinical manifestations of 75 patients with suspected TBM were prospectively evaluated using the LCS system, which categorizes cases as "definite" (laboratory confirmed), "probable" (>10 points without imaging or > 12 points with imaging), and "possible" (6-9 points without imaging or 6-11 points with imaging). The sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of the LCS system were compared to GeneXpert and mycobacterial growth indicator tube (MGIT) liquid culture, which are considered the gold standard tests. RESULTS: Out of 75 recruited cases, 11 were confirmed as definite TBM cases. The LCS system correctly identified 8 of these as "probable" and 3 as "possible" cases. Compared to GeneXpert, the LCS system had a specificity of 100%, sensitivity of 54.55%, NPV of 92.7%, and PPV of 100%. Compared to MGIT liquid culture, the LCS system had a specificity of 100%, sensitivity of 81.82%, NPV of 96.97%, and PPV of 100%. The diagnostic accuracy was higher for MGIT liquid culture (97.33%) than GeneXpert (93.33%). CONCLUSION: The LCS system is a practical and easily applicable tool that can aid the diagnosis of suspected TBM cases, particularly in resource-limited settings. Despite some limitations, the LCS system demonstrated good diagnostic performance, suggesting its potential utility in improving TBM diagnosis and management.


Assuntos
Mycobacterium tuberculosis , Sensibilidade e Especificidade , Centros de Atenção Terciária , Tuberculose Meníngea , Humanos , Tuberculose Meníngea/diagnóstico , Tuberculose Meníngea/microbiologia , Índia , Feminino , Masculino , Adulto , Estudos Prospectivos , Pessoa de Meia-Idade , Mycobacterium tuberculosis/isolamento & purificação , Mycobacterium tuberculosis/genética , Adulto Jovem , Adolescente , Valor Preditivo dos Testes , Consenso , Idoso
4.
Int J Surg Case Rep ; 124: 110236, 2024 Sep 03.
Artigo em Inglês | MEDLINE | ID: mdl-39341159

RESUMO

INTRODUCTION: Rectal foreign bodies (FB), as a cause of surgical emergency are on the rise. The management is usually uneventful but delays in presentation are associated with complications and morbidity. Psychiatric illnesses account for a vast majority of FB insertion cases which is usually overlooked. CASE PRESENTATION: 56 year male with alleged history of insertion of a discarded bottle of insecticide into his rectum 6 weeks ago. He presented late, in sepsis due to lack of family support and social taboo, in sepsis. The foreign body was extracted by trans-anal approach with no evidence of bowel injury on laparoscopy. Psychiatry consultation revealed alcohol-induced psychosis which was managed. CLINICAL DISCUSSION: Insertion of foreign bodies voluntarily for sexual gratification is common, apart from some accidental cases. There is delay in seeking medical attention, complicated by many social factors. Multiple approaches to management are in practice. Psychiatric component is linked in part to the primary act, delayed presentation and recurrence. CONCLUSION: Foreign body insertion into anatomical orifices is on the rise. Management can be complicated by body of interest, patient and social factors. Psychiatric history, evaluation and corresponding management is a must for all cases. Social awareness can help reduce incidence and the delay in seeking medical care.

5.
Mol Biol Rep ; 51(1): 896, 2024 Aug 08.
Artigo em Inglês | MEDLINE | ID: mdl-39115550

RESUMO

CRISPR-based (Clustered regularly interspaced short palindromic repeats-based) technologies have revolutionized molecular biology and diagnostics, offering unprecedented precision and versatility. However, challenges remain, such as high costs, demanding technical expertise, and limited quantification capabilities. To overcome these limitations, innovative microfluidic platforms are emerging as powerful tools for enhancing CRISPR diagnostics. This review explores the exciting intersection of CRISPR and microfluidics, highlighting their potential to revolutionize healthcare diagnostics. By integrating CRISPR's specificity with microfluidics' miniaturization and automation, researchers are developing more sensitive and portable diagnostic tools for a range of diseases. These microfluidic devices streamline sample processing, improve diagnostic performance, and enable point-of-care applications, allowing for rapid and accurate detection of pathogens, genetic disorders, and other health conditions. The review discusses various CRISPR/Cas systems, including Cas9, Cas12, and Cas13, and their integration with microfluidic platforms. It also examines the advantages and limitations of these systems, highlighting their potential for detecting DNA and RNA biomarkers. The review also explores the key challenges in developing and implementing CRISPR-driven microfluidic diagnostics, such as ensuring robustness, minimizing cross-contamination, and achieving robust quantification. Finally, it highlights potential future directions for this rapidly evolving field, emphasizing the transformative potential of these technologies for personalized medicine and global health.


Assuntos
Sistemas CRISPR-Cas , Microfluídica , Sistemas CRISPR-Cas/genética , Humanos , Microfluídica/métodos , Patologia Molecular/métodos , Repetições Palindrômicas Curtas Agrupadas e Regularmente Espaçadas/genética , Técnicas de Diagnóstico Molecular/métodos , Edição de Genes/métodos , Dispositivos Lab-On-A-Chip
6.
Heliyon ; 10(15): e35360, 2024 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-39166048

RESUMO

α-Na0.5Mn0.93O2@Na0.91MnO2 (NaMnO) and K0.48Mn1.94O5@Na0.91MnO2 (KNaMnO) nanocomposites have been synthesized using solid-state reaction method. FESEM results convey the formation of column-shaped morphology. FTIR exhibited a shift in the vibration frequency upon potassium loading. Cyclic voltammetric curves are scanned (0 V-0.8 V) at different scan rates (5 mV/s to 100 mV/s) in 1M KOH electrolyte. Galvanostatic charge-discharge characteristics, for different current densities, have shown non-linear or pseudocapacitive characteristics of the prepared electrodes. High specific capacitance of ∼361 F/g and ∼143 F/g, at a current density of 1A/g, has been achieved for KNaMnO and NaMnO samples, respectively. KNaMnO sample exhibited higher capacitive retention (116 %), up to 2000 cycles, and obeys lower series resistance, charge transfer resistance, and Warburg impedance parameters, thus, convey higher efficiency of this compound for supercapacitor applications.

7.
Orphanet J Rare Dis ; 19(1): 295, 2024 Aug 13.
Artigo em Inglês | MEDLINE | ID: mdl-39138584

RESUMO

BACKGROUND: Rare disorders comprise of ~ 7500 different conditions affecting multiple systems. Diagnosis of rare diseases is complex due to dearth of specialized medical professionals, testing labs and limited therapeutic options. There is scarcity of data on the prevalence of rare diseases in different populations. India being home to a large population comprising of 4600 population groups, of which several thousand are endogamous, is likely to have a high burden of rare diseases. The present study provides a retrospective overview of a cohort of patients with rare genetic diseases identified at a tertiary genetic test centre in India. RESULTS: Overall, 3294 patients with 305 rare diseases were identified in the present study cohort. These were categorized into 14 disease groups based on the major organ/ organ system affected. Highest number of rare diseases (D = 149/305, 48.9%) were identified in the neuromuscular and neurodevelopmental (NMND) group followed by inborn errors of metabolism (IEM) (D = 47/305; 15.4%). Majority patients in the present cohort (N = 1992, 61%) were diagnosed under IEM group, of which Gaucher disease constituted maximum cases (N = 224, 11.2%). Under the NMND group, Duchenne muscular dystrophy (N = 291/885, 32.9%), trinucleotide repeat expansion disorders (N = 242/885; 27.3%) and spinal muscular atrophy (N = 141/885, 15.9%) were the most common. Majority cases of ß-thalassemia (N = 120/149, 80.5%) and cystic fibrosis (N = 74/75, 98.7%) under the haematological and pulmonary groups were observed, respectively. Founder variants were identified for Tay-Sachs disease and mucopolysaccharidosis IVA diseases. Recurrent variants for Gaucher disease (GBA:c.1448T > C), ß-thalassemia (HBB:c.92.+5G > C), non-syndromic hearing loss (GJB2:c.71G > A), albinism (TYR:c.832 C > T), congenital adrenal hyperplasia (CYP21A2:c.29-13 C > G) and progressive pseudo rheumatoid dysplasia (CCN6:c.298T > A) were observed in the present study. CONCLUSION: The present retrospective study of rare disease patients diagnosed at a tertiary genetic test centre provides first insight into the distribution of rare genetic diseases across the country. This information will likely aid in drafting future health policies, including newborn screening programs, development of target specific panel for affordable diagnosis of rare diseases and eventually build a platform for devising novel treatment strategies for rare diseases.


Assuntos
Doenças Raras , Humanos , Índia/epidemiologia , Doenças Raras/genética , Estudos Retrospectivos , Masculino , Feminino , Centros de Atenção Terciária , Criança , Adulto , Adolescente , Pré-Escolar , Adulto Jovem , Lactente
8.
Arch Med Res ; 55(6): 103037, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-38981342

RESUMO

Human life and health have interacted reciprocally with the surrounding environment and animal fauna for ages. This relationship is evident in developing nations, where human life depends more on the animal population for food, transportation, clothing, draft power, and fuel sources, among others. This inseparable link is a potent source of public health issues, especially in outbreaks of zoonotic diseases transmitted from animals to humans. Zoonotic diseases are referred to as diseases that are naturally transmitted between vertebrate animals and humans. Among the globally emerging diseases in the last decade, 75% are of animal origin, most of which are life-threatening. Since most of them are caused by potent new pathogens capable of long-distance transmission, the impact is widespread and has serious public health and economic consequences. Various other factors also contribute to the transmission, spread, and outbreak of zoonotic diseases, among which industrialization-led globalization followed by ecological disruption and climate change play a critical role. In this regard, all the possible strategies, including advances in rapid and confirmatory disease diagnosis and surveillance/monitoring, immunization/vaccination, therapeutic approaches, appropriate prevention and control measures to be adapted, and awareness programs, need to be adopted collaboratively among different health sectors in medical, veterinary, and concerned departments to implement the necessary interventions for the effective restriction, minimization, and timely control of zoonotic threats. The present review focuses on the current scenario of zoonotic diseases and their counteracting approaches to safeguard their health impact on humans.


Assuntos
Zoonoses , Animais , Humanos , Zoonoses/prevenção & controle , Zoonoses/epidemiologia , Zoonoses/diagnóstico , Zoonoses/transmissão , Saúde Pública
9.
Am J Trop Med Hyg ; 111(3): 606-609, 2024 Sep 04.
Artigo em Inglês | MEDLINE | ID: mdl-38955192

RESUMO

Dengue continues to pose a global health challenge, particularly in tropical and subtropical areas. Dengue can impact various organs, including the central nervous system, and can cause various neurological symptoms, although stroke is an uncommon complication. Among strokes, ischemic stroke is very uncommon in dengue. A 27-year-old unmarried female was referred to our institution with 8 days of fever and myalgia, 5 days of vomiting, and 3 days of altered sensorium. Small-sized bilateral pupils reacted slowly to light. Chest auscultation revealed diffuse coarse crepitation. Poor general condition and labored breathing led to intensive care unit transfer and intubation. Her contrast-enhanced brain magnetic resonance image showed chronic pontine infarction. She was diagnosed with dengue fever (NS1Ag positive) complicated by bilateral pontine infarction. After a long course of illness, she was finally discharged to home in good recovery status. Clinicians need to be aware of the uncommon dengue presentation of stroke. Treatment is supportive with variable outcomes.


Assuntos
Dengue , AVC Isquêmico , Humanos , Feminino , Adulto , Dengue/complicações , AVC Isquêmico/diagnóstico por imagem , AVC Isquêmico/virologia , Imageamento por Ressonância Magnética , Vírus da Dengue
10.
Am J Trop Med Hyg ; 111(1): 59-63, 2024 Jul 03.
Artigo em Inglês | MEDLINE | ID: mdl-38834057

RESUMO

Post-kala-azar dermal leishmaniasis (PKDL) is widely prevalent in the endemic regions of India, but its treatment remains unsatisfactory. The WHO recommends a 12-week treatment with oral miltefosine, but its ocular toxicities are a serious concern. The late 1980s and early 1990s saw the use of sodium stibogluconate and amphotericin B (AmB) for a brief period. Both drugs had frequent adverse events and were expensive, and the duration of treatments was unacceptably long. This retrospective study evaluated, analyzed, and reported the outcomes of PKDL patients treated with a shorter course of AmB, the most effective antileishmanial drug. The hospital records of PKDL patients treated with AmB by 30 alternate-day infusions over 60 days (instead of conventional 60-80 infusions over 100-120 days) between September 2010 and August 2016 were reviewed. Only patients with confirmed parasitological diagnosis were included. Their records were studied for treatment-related adverse events, end-of-treatment parasitological status, and 12-month follow-up results. One hundred two patients were eligible for this study between September 2010 and August 2016. After therapy, 92/102 (90.2%) patients improved; 3 (2.9%) had to cease treatment owing to severe adverse effects, and one died of severe diarrhea unrelated to AmB. Six (5.9%) patients withdrew consent before the treatment was complete. At the 12-month evaluation, 89/102 (87.3%) patients attained a final cure. A 30-infusion regimen of AmB remains highly effective in PKDL. Without a shorter, safer, and more economical regimen for the treatment of PKDL, it should be used until a better regimen is available.


Assuntos
Anfotericina B , Antiprotozoários , Ácido Desoxicólico , Combinação de Medicamentos , Leishmaniose Cutânea , Leishmaniose Visceral , Humanos , Anfotericina B/uso terapêutico , Anfotericina B/administração & dosagem , Anfotericina B/efeitos adversos , Masculino , Índia/epidemiologia , Leishmaniose Visceral/tratamento farmacológico , Feminino , Antiprotozoários/uso terapêutico , Antiprotozoários/efeitos adversos , Antiprotozoários/administração & dosagem , Adulto , Ácido Desoxicólico/uso terapêutico , Ácido Desoxicólico/administração & dosagem , Ácido Desoxicólico/efeitos adversos , Estudos Retrospectivos , Leishmaniose Cutânea/tratamento farmacológico , Pessoa de Meia-Idade , Adolescente , Adulto Jovem , Criança , Resultado do Tratamento , Idoso
11.
J Bacteriol ; 206(7): e0011924, 2024 07 25.
Artigo em Inglês | MEDLINE | ID: mdl-38837341

RESUMO

RsgA (small ribosomal subunit, 30S, GTPase), a late-stage biogenesis factor, releases RbfA from 30S-RbfA complex. Escherichia coli ΔrsgA (deleted for rsgA) shows a slow growth phenotype and an increased accumulation of 17S rRNA (precursor of 16S rRNA) and the ribosomal subunits. Here, we show that the rescue of the ΔrsgA strain by multicopy infB (IF2) is enhanced by simultaneous overexpression of initiator tRNA (i-tRNA), suggesting a role of initiation complex formation in growth rescue. The synergistic effect of IF2/i-tRNA is accompanied by increased processing of 17S rRNA (to 16S), and protection of the 16S rRNA 3'-minor domain. Importantly, we show that an IF2-binding anticonvulsant drug, lamotrigine (Ltg), also rescues the ΔrsgA strain growth. The rescue is accompanied by increased processing of 17S rRNA, protection of the 3'-minor domain of 16S rRNA, and increased 70S ribosomes in polysome profiles. However, Ltg becomes inhibitory to the ΔrsgA strain whose growth was already rescued by an L83R mutation in rbfA. Interestingly, like wild-type infB, overproduction of LtgRinfB alleles (having indel mutations in their domain II) also rescues the ΔrsgA strain (independent of Ltg). Our observations suggest the dual role of IF2 in rescuing the ΔrsgA strain. First, together with i-tRNA, IF2 facilitates the final steps of processing of 17S rRNA. Second, a conformer of IF2 functionally compensates for RsgA, albeit poorly, during 30S biogenesis. IMPORTANCE: RsgA is a late-stage ribosome biogenesis factor. Earlier, infB (IF2) was isolated as a multicopy suppressor of the Escherichia coli ΔrsgA strain. How IF2 rescued the strain growth remained unclear. This study reveals that (i) the multicopy infB-mediated growth rescue of E. coli ΔrsgA and the processing of 17S precursor to 16S rRNA in the strain are enhanced upon simultaneous overexpression of initiator tRNA and (ii) a conformer of IF2, whose occurrence increases when IF2 is overproduced or when E. coli ΔrsgA is treated with Ltg (an anticonvulsant drug that binds to domain II of IF2), compensates for the function of RsgA. Thus, this study reveals yet another role of IF2 in ribosome biogenesis.


Assuntos
Proteínas de Escherichia coli , Escherichia coli , Lamotrigina , Ribossomos , Proteínas de Escherichia coli/genética , Proteínas de Escherichia coli/metabolismo , Escherichia coli/genética , Escherichia coli/metabolismo , Escherichia coli/efeitos dos fármacos , Lamotrigina/farmacologia , Ribossomos/metabolismo , Fator de Iniciação 2 em Procariotos/metabolismo , Fator de Iniciação 2 em Procariotos/genética , RNA Ribossômico 16S/genética , Proteínas Ribossômicas/genética , Proteínas Ribossômicas/metabolismo , Regulação Bacteriana da Expressão Gênica , RNA de Transferência de Metionina/metabolismo , RNA de Transferência de Metionina/genética , Triazinas/farmacologia , Triazinas/metabolismo , Proteínas de Ligação a RNA/genética , Proteínas de Ligação a RNA/metabolismo , GTP Fosfo-Hidrolases
12.
Org Lett ; 26(24): 5069-5073, 2024 Jun 21.
Artigo em Inglês | MEDLINE | ID: mdl-38847514

RESUMO

We have demonstrated a Pd(0)-catalyzed Heck/C(sp3)-H activation cascade for the synthesis of spirocyclopropyl oxindoles in high yields from easily accessible ortho-bromoacrylamides. The formation of spirocyclopropyl oxindole is guided by an unconventional four-membered palladacycle through C(sp3)-H activation. The reaction exhibits a wide range of substrate scope and operates efficiently with a mere 0.5 mol % of Pd-catalyst. In addition, the use of microwave conditions facilitates rapid completion of the reaction. Furthermore, this spirocyclopropanation strategy can be coupled with [3 + 2] cycloaddition to produce spiropyrrolidine oxindoles, offering a valuable approach for the preparation of alkaloids such as (±)-horsfiline and (±)-coerulescine.

13.
J Res Adolesc ; 34(2): 327-338, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38708916

RESUMO

The social identity development of adolescents in marginalized communities across the globe holds paramount significance in determining the overall well-being of its future population. Focusing on one such community, the Kodavas, an Indigenous community in South India, this study aims to understand the shifting configurations of social identity based on the changing sociocultural structure and its implications on identity perception among the adolescents belonging to the Kodava community in Kodagu district in Karnataka, India. This study used a qualitative research design to develop an analytical framework of social identity formation and its transitions in the context of the Kodavas. Data were collected from 188 adolescents (47% boys, 53% girls) between 13 and 17 years (M age = 15 years), in the form of essay writing. The findings based on thematic analysis highlight the core traditional elements of Kodava identity, factors influencing the transition in identity, and its reflection in the contemporary period.


Assuntos
Identificação Social , Humanos , Índia/etnologia , Adolescente , Masculino , Feminino , Pesquisa Qualitativa , Povos Indígenas/psicologia , Autoimagem
14.
Pharm Nanotechnol ; 2024 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-38757163

RESUMO

Transdermal drug delivery is an attractive and patient-friendly route for administering therapeutic agents. However, the skin's natural barrier, the stratum corneum, restricts the passage of many drugs, limiting their effectiveness. To overcome this challenge, researchers have developed various nanocarriers to enhance drug penetration through the skin. Transethosomes, a novel and promising drug delivery system, have emerged as an innovative solution for improving transdermal drug delivery. Transethosomes are a hybrid of two established nanocarriers: ethosomes and transfersomes. Ethosomes are lipid-based vesicles that can accommodate lipophilic and hydrophilic drugs, while transfersomes are deformable lipid vesicles designed to enhance skin penetration. Transethosomes combine the advantages of both systems, making them ideal candidates for efficient transdermal drug delivery. They are composed of phospholipids, ethanol, and water and exhibit high flexibility, enabling them to squeeze through the tight junctions of the stratum corneum. This abstract reviews the key characteristics of transethosomes, including their composition, preparation methods, mechanisms of action, characterization parameters, and prospects. Moreover, the recent advancements and applications of transethosomes in delivering various therapeutic agents, such as analgesics, anti-inflammatories, hormones, and skincare products, are explored. The enhanced skin penetration capabilities of transethosomes can potentially reduce systemic side effects and improve patient compliance, making them a valuable tool in the field of transdermal drug delivery. In conclusion, transethosomes represent a promising platform for overcoming the challenges of transdermal drug delivery. Their unique properties enable efficient drug permeation through the skin, offering a more controlled and effective means of administering a wide range of pharmaceutical and cosmetic products. This abstract highlights the potential of transethosomes as a valuable addition to the field of transdermal drug delivery and paves the way for further research and development in this area.

15.
Mitochondrion ; 76: 101876, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38599301

RESUMO

Ribosome biogenesis, involving processing/assembly of rRNAs and r-proteins is a vital process. In Saccharomyces cerevisiae mitochondria, ribosomal small subunit comprises 15S rRNA (15S). While the 15S 5'-end processing uses Ccm1p and Pet127p, the mechanisms of the 3'-end processing remain unclear. We reveal involvement of Rmd9p in safeguarding/processing 15S 3'-end. Rmd9p deficiency results in a cleavage at a position 183 nucleotides upstream of 15S 3'-end, and in the loss of the 3'-minor domain. Rmd9p binds to the sequences in the 3'-end region of 15S, and a genetic interaction between rmd9 and dss1 indicates that Rmd9p regulates/limits mtEXO activity during the 3'-end spacer processing.


Assuntos
RNA Ribossômico , Proteínas de Saccharomyces cerevisiae , Saccharomyces cerevisiae , Mitocôndrias/metabolismo , Mitocôndrias/genética , Processamento de Terminações 3' de RNA , Processamento Pós-Transcricional do RNA , RNA Fúngico/metabolismo , RNA Fúngico/genética , RNA Ribossômico/genética , RNA Ribossômico/metabolismo , Saccharomyces cerevisiae/genética , Saccharomyces cerevisiae/metabolismo , Proteínas de Saccharomyces cerevisiae/metabolismo , Proteínas de Saccharomyces cerevisiae/genética
17.
Ther Adv Med Oncol ; 16: 17588359241236442, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38680290

RESUMO

Background: A novel nanosomal paclitaxel lipid suspension (NPLS), free from Cremophor EL (CrEL) and ethanol, was developed to address the solvent-related toxicities associated with conventional paclitaxel formulation. Objective: To evaluate the efficacy and safety of NPLS versus CrEL-based paclitaxel (conventional paclitaxel) in patients with metastatic breast cancer (MBC). Design: A prospective, open-label, randomized, multiple-dose, parallel, phase II/III study. Methods: Adult (18-65 years) female patients with MBC who had previously failed at least one line of chemotherapy were randomized (2:2:1) to NPLS 175 mg/m2 every 3 weeks (Q3W, n = 48, arm A), NPLS 80 mg/m2 every week (QW, n = 45, arm B) without premedication or conventional paclitaxel (Taxol®, manufactured by Bristol-Myers Squibb, Princeton, NJ, USA) 175 mg/m2 Q3W (n = 27, arm C) with premedication. In the extension study, an additional 54 patients were randomized (2:1) to arm A (n = 37) or arm C (n = 17). Results: Pooled data from the primary study and its extension phase included 174 patients. The primary endpoint was the overall response rate (ORR). As per intent-to-treat analysis, ORR was significantly better in the NPLS QW arm as compared to conventional paclitaxel [44.4% (20/45) versus 22.7% (10/44), (p = 0.04)]. An improvement in ORR with NPLS Q3W versus conventional paclitaxel arm [29.4% (25/85) versus 22.7% (10/44)] (p = 0.53) was observed. Disease control rates observed were improved with NPLS Q3W versus conventional paclitaxel Q3W (77.7% versus 72.7%, p = 0.66) and with NPLS QW versus conventional paclitaxel Q3W (84.4% versus 72.7%, p = 0.20), although not significant. A lower incidence of grade III/IV peripheral sensory neuropathy, vomiting, and dyspnea was reported with NPLS Q3W versus conventional paclitaxel Q3W arms. Conclusion: NPLS demonstrated an improved tumor response rate and a favorable safety profile versus conventional paclitaxel. NPLS 80 mg/m2 QW demonstrated a significantly better response versus conventional paclitaxel 175 mg/m2 Q3W. Trial registration: Clinical Trial Registry-India (CTRI), CTRI/2010/091/001344 Registered on: 18 October 2010 (https://ctri.nic.in/Clinicaltrials/pmaindet2.php?EncHid=MjEzNQ==&Enc=&userName=CTRI/2010/091/001344), CTRI/2015/07/006062 Registered on: 31 July 2015 (https://ctri.nic.in/Clinicaltrials/pmaindet2.php?EncHid=MTE2Mjc=&Enc=&userName=CTRI/2015/07/006062).


Role of nanosomal paclitaxel lipid suspension (NPLS) in the treatment of patients with metastatic breast cancer (MBC) Why was the study done? Paclitaxel is a commonly used drug for the treatment of breast cancer. Conventional formulation of paclitaxel is known to cause side effects like injection site reactions. A newer formulation named NPLS was developed to overcome the limitations of the conventional paclitaxel. The current study was done to compare the safety and effectiveness of NPLS and conventional paclitaxel in patients with advanced breast cancer. What did the researchers do? The research team conducted a large study in multiple hospitals across India, involving women with advanced breast cancer who had experienced treatment failure with previous chemotherapy. A total of 174 patients were randomly assigned to receive either of the three treatment schedules: (1) NPLS every 3 weeks, (2) NPLS every week, (3) conventional paclitaxel every 3 weeks. What did the researchers find? The results showed that NPLS, in a weekly schedule, led to better tumor response rates compared to conventional paclitaxel given every 3 weeks. Additionally, NPLS demonstrated a favorable safety profile, as compared to conventional paclitaxel. What do the findings mean? These findings suggest that NPLS could be a promising alternative for women with advanced breast cancer. NPLS improved the response to treatment, with a better safety profile compared to conventional paclitaxel.

18.
Methods Mol Biol ; 2761: 529-557, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38427260

RESUMO

Parkinson's disease (PD) is a neurodegenerative condition linked to the deterioration of motor and cognitive performance. It produces degeneration of the dopaminergic neurons along the nigrostriatal pathway in the central nervous system (CNS), which leads to symptoms such as bradykinesias, tremors, rigidity, and postural instability. There are several medications currently approved for the therapy of PD, but a permanent cure for it remains elusive. With the aging population set to increase, a number of PD cases are expected to shoot up in the coming times. Hence, there is a need to look for new molecular targets that could be investigated both preclinically and clinically for PD treatment. Among these, several ion channels and metal ions are being studied for their effects on PD pathology and the functioning of dopaminergic neurons. Ion channels such as N-methyl-D-aspartate (NMDA), γ-aminobutyric acid A (GABAA), voltage-gated calcium channels, potassium channels, HCN channels, Hv1 proton channels, and voltage-gated sodium channels and metal ions such as mercury, zinc, copper, iron, manganese, calcium, and lead showed prominent involvement in PD. Pharmacological agents have been used to target these ion channels and metal ions to prevent or treat PD. Hence, in the present review, we summarize the pathophysiological events linked to PD with an emphasis on the role of ions and ion channels in PD pathology, and pharmacological agents targeting these ion channels have also been listed.


Assuntos
Doença de Parkinson , Humanos , Cálcio/metabolismo , Neurônios Dopaminérgicos/metabolismo , Canais Iônicos/metabolismo , Doença de Parkinson/metabolismo
19.
Mol Cancer ; 23(1): 50, 2024 03 09.
Artigo em Inglês | MEDLINE | ID: mdl-38461268

RESUMO

Despite advancements in treatment protocols, cancer is one of the leading cause of deaths worldwide. Therefore, there is a need to identify newer and personalized therapeutic targets along with screening technologies to combat cancer. With the advent of pan-omics technologies, such as genomics, transcriptomics, proteomics, metabolomics, and lipidomics, the scientific community has witnessed an improved molecular and metabolomic understanding of various diseases, including cancer. In addition, three-dimensional (3-D) disease models have been efficiently utilized for understanding disease pathophysiology and as screening tools in drug discovery. An integrated approach utilizing pan-omics technologies and 3-D in vitro tumor models has led to improved understanding of the intricate network encompassing various signalling pathways and molecular cross-talk in solid tumors. In the present review, we underscore the current trends in omics technologies and highlight their role in understanding genotypic-phenotypic co-relation in cancer with respect to 3-D in vitro tumor models. We further discuss the challenges associated with omics technologies and provide our outlook on the future applications of these technologies in drug discovery and precision medicine for improved management of cancer.


Assuntos
Multiômica , Neoplasias , Humanos , Medicina de Precisão/métodos , Genômica/métodos , Neoplasias/tratamento farmacológico , Neoplasias/genética , Neoplasias/diagnóstico , Metabolômica/métodos , Descoberta de Drogas
20.
J Indian Assoc Pediatr Surg ; 29(1): 75-77, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38405254

RESUMO

Hemangiomas are rare small bowel tumors requiring a high index of suspicion for diagnosis. We present a case of ileal hemangioma in a 3-year-old male presenting with recurrent anemia. The patient was diagnosed with a contrast-enhanced computed tomography abdomen and managed surgically by resection and anastomosis. Histopathologically, it was a solitary ileal cavernous hemangioma with a submucosal infiltrative pattern with serosa involvement and a normal mucosa.

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