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1.
Anim Biotechnol ; 34(9): 5168-5172, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37071509

RESUMO

The present study was conducted to assess the effect of exposure to heat stress on the HSP70 gene expression pattern ex vivo in chickens. The adult healthy birds (n = 15) grouped into three replicates of n = 5 each were used to isolate peripheral blood mononuclear cells (PBMCs). The PBMCs were subjected to heat stress at 42 °C for 1 h, and cells without heat stress (NHS) were taken as control. The cells were seeded in 24 well plates and incubated in a humidified incubator at 37 °C under 5% CO2 for recovery. HSP70 expression kinetics were evaluated at 0, 2, 4, 6, and 8 h of the recovery period. Compared with NHS, the expression pattern of HSP70 was upregulated gradually from 0 to 4 h with peak (p < 0.05) expression recorded at 4 h of recovery time. mRNA expression of HSP70 escalated in a time-dependent manner from 0 to 4 h of heat exposure and thereafter exhibited a gradually decreasing pattern till 8 h of the recovery period. The findings from this study highlight the protective role of HSP70 against the deleterious effects of heat stress in chicken PBMCs. Further, the study demonstrates the possible use of PBMCs as a cellular system in assessing the heat stress effect in chickens ex vivo.


Assuntos
Galinhas , Proteínas de Choque Térmico HSP70 , Animais , Proteínas de Choque Térmico HSP70/genética , Proteínas de Choque Térmico HSP70/metabolismo , Galinhas/genética , Galinhas/metabolismo , Leucócitos Mononucleares , Temperatura Alta , Resposta ao Choque Térmico/genética , Expressão Gênica
2.
J Liposome Res ; 33(3): 268-282, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-36594184

RESUMO

The emerging drug resistance to the approved first-line drug therapy leads to clinical failure in cancer. Drug repurposing studies lead to the identification of many old drugs to be used for cancer treatment. Combining the repurposed drugs (niclosamide) with first-line therapy agents like erlotinib HCl showed improved efficacy by inhibiting erlotinib HCl acquired resistance. But there is a need to develop a sensitive, accurate, and excellent analytical method and drug delivery system for successfully delivering drug combinations. In the current study, an HPLC method was developed and validated for the simultaneous estimation of niclosamide and erlotinib HCl. The retention time of niclosamide and erlotinib hydrochloride was 6.48 and 7.65 min at 333 nm. The developed method was rapid and sensitive to separating the two drugs with reasonable accuracy, precision, robustness, and ruggedness. A Plackett-Burman (PBD) screening design was used to identify the critical parameters affecting liposomal formulation development using particle size, size distribution, zeta potential, and entrapment efficiency as the response. Lipid concentration, drug concentration, hydration temperature, and media volume were critical parameters affecting the particle size, polydispersity index (PDI), ZP, and %EE of the liposomes. The optimized NCM-ERL liposomes showed the particle size (126.05 ± 2.1), PDI (0.498 ± 0.1), ZP (-16.2 ± 0.3), and %EE of NCM and ERL (50.04 ± 2.8 and 05.42 ± 1.3). In vitro release studies indicated the controlled release of the drugs loaded liposomes (87.06 ± 9.93% and 42.33 ± 0.89% in 24 h).


Assuntos
Lipossomos , Niclosamida , Cloridrato de Erlotinib/farmacologia , Cromatografia Líquida de Alta Pressão , Liberação Controlada de Fármacos , Tamanho da Partícula
3.
BMC Bioinformatics ; 19(Suppl 8): 212, 2018 06 13.
Artigo em Inglês | MEDLINE | ID: mdl-29897321

RESUMO

BACKGROUND: Social media is a useful platform to share health-related information due to its vast reach. This makes it a good candidate for public-health monitoring tasks, specifically for pharmacovigilance. We study the problem of extraction of Adverse-Drug-Reaction (ADR) mentions from social media, particularly from Twitter. Medical information extraction from social media is challenging, mainly due to short and highly informal nature of text, as compared to more technical and formal medical reports. METHODS: Current methods in ADR mention extraction rely on supervised learning methods, which suffer from labeled data scarcity problem. The state-of-the-art method uses deep neural networks, specifically a class of Recurrent Neural Network (RNN) which is Long-Short-Term-Memory network (LSTM). Deep neural networks, due to their large number of free parameters rely heavily on large annotated corpora for learning the end task. But in the real-world, it is hard to get large labeled data, mainly due to the heavy cost associated with the manual annotation. RESULTS: To this end, we propose a novel semi-supervised learning based RNN model, which can leverage unlabeled data also present in abundance on social media. Through experiments we demonstrate the effectiveness of our method, achieving state-of-the-art performance in ADR mention extraction. CONCLUSION: In this study, we tackle the problem of labeled data scarcity for Adverse Drug Reaction mention extraction from social media and propose a novel semi-supervised learning based method which can leverage large unlabeled corpus available in abundance on the web. Through empirical study, we demonstrate that our proposed method outperforms fully supervised learning based baseline which relies on large manually annotated corpus for a good performance.


Assuntos
Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/patologia , Armazenamento e Recuperação da Informação , Redes Neurais de Computação , Aprendizado de Máquina Supervisionado , Bases de Dados como Assunto , Humanos , Mídias Sociais
4.
Anim Biotechnol ; 28(4): 248-252, 2017 Oct 02.
Artigo em Inglês | MEDLINE | ID: mdl-28060576

RESUMO

Bovine herpesvirus-1 (BoHV-1) is an important viral pathogen causing significant economic losses to the cattle industry. Glycoprotein E-deleted marker vaccines form the basis for BoHV-1 control programs widely, wherein detection and differentiation of wild-type and gE-deleted vaccine strains is of crucial importance for proper disease management. In the present study, we report an EvaGreen-based multiplex real-time polymerase chain reaction (EGRT-PCR) assay for rapid differentiation of wild-type and glycoprotein E-deleted strains of BoHV-1. The EGRT-PCR assay could simultaneously detect two viral genes (glycoprotein B and E) and an internal positive control gene (bovine growth hormone- bGH), in a single-tube reaction. The analytical sensitivity of the EGRT-PCR assay was as little as 10 copies of the BoHV-1 DNA per reaction. The modified real-time PCR assay could successfully differentiate wild-type and gE-deleted BoHV-1 strains based on gene specific melting temperatures (Tm) peaks. Our results have shown that the EGRT-PCR developed in this study might prove to be a promising tool in disease management by enabling rapid differentiation of wild-type and gE-deleted strains of BoHV-1.


Assuntos
Herpesvirus Bovino 1 , Reação em Cadeia da Polimerase Multiplex/métodos , Reação em Cadeia da Polimerase em Tempo Real/métodos , Proteínas Virais , Animais , Bovinos , Doenças dos Bovinos/virologia , Infecções por Herpesviridae/veterinária , Infecções por Herpesviridae/virologia , Herpesvirus Bovino 1/classificação , Herpesvirus Bovino 1/genética , Modelos Lineares , Sensibilidade e Especificidade , Proteínas Virais/classificação , Proteínas Virais/genética
5.
J Therm Biol ; 65: 69-75, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28343578

RESUMO

Stress is the result of an organism's interaction with environmental challenges. Regulations of gene expression including translation modulations are critical for adaptation and survival under stress. Untranslated regions (UTRs) of the transcripts play significant roles in translation regulation and continue to raise many intriguing questions in our understanding of cellular stress physiology. IRES (Internal ribosome entry site) and uORF (upstream open reading frame) mediated alternative translation initiations are emerging as unique mechanisms. Recent studies have revealed novel means of mRNAs stabilization in stress granules and their reversible modifications. Differential regulation of select transcripts is possible by the interplay between the adenine/uridine-rich elements (AREs) in 3'UTR with their binding proteins (AUBP) and by microRNA-mediated effects. Coordination of these various mechanisms control translation and thereby enables appropriate responses to environmental stress. In this review, we focus on the role of sequence signatures both at 5' and 3'UTRs in translation reprogramming during cellular stress responses.


Assuntos
Regiões 3' não Traduzidas , Regiões 5' não Traduzidas , Biossíntese de Proteínas , Animais , Regulação da Expressão Gênica , Humanos , Sítios Internos de Entrada Ribossomal , RNA Mensageiro/genética , Estresse Fisiológico
6.
J Biomed Sci ; 22: 15, 2015 Feb 18.
Artigo em Inglês | MEDLINE | ID: mdl-25889635

RESUMO

BACKGROUND: Novel pentacycloundecane (PCU)-lactone-CO-EAIS peptide inhibitors were designed, synthesized, and evaluated against wild-type C-South African (C-SA) HIV-1 protease. Three compounds are reported herein, two of which displayed IC50 values of less than 1.00 µM. A comparative MM-PB(GB)SA binding free energy of solvation values of PCU-lactam and lactone models and their enantiomers as well as the PCU-lactam-NH-EAIS and lactone-CO-EAIS peptide inhibitors and their corresponding diastereomers complexed with South African HIV protease (C-SA) was performed. This will enable us to rationalize the considerable difference between inhibitory concentration (IC50) of PCU-lactam-NH-EAIS and PCU-lactone-CO-EAIS peptides. RESULTS: The PCU-lactam model exhibited more negative calculated binding free energies of solvation than the PCU-lactone model. The same trend was observed for the PCU-peptide inhibitors, which correspond to the experimental activities for the PCU-lactam-NH-EAIS peptide (IC50 = 0.076 µM) and the PCU-lactone-CO-EAIS peptide inhibitors (IC50 = 0.850 µM). Furthermore, a density functional theory (DFT) study on the natural atomic charges of the nitrogen and oxygen atoms of the three PCU-lactam, PCU-lactim and PCU-lactone models were performed using natural bond orbital (NBO) analysis. Electrostatic potential maps were also used to visualize the electron density around electron-rich regions. The asymmetry parameter (η) and quadrupole coupling constant (χ) values of the nitrogen and oxygen nuclei of the model compounds were calculated at the same level of theory. Electronic molecular properties including polarizability and electric dipole moments were also calculated and compared. The Gibbs theoretical free solvation energies of solvation (∆Gsolv) were also considered. CONCLUSIONS: A general trend is observed that the lactam species appears to have a larger negative charge distribution around the heteroatoms, larger quadrupole constant, dipole moment and better solvation energy, in comparison to the PCU-lactone model. It can be argued that these characteristics will ensure better eletronic interaction between the lactam and the receptor, corresponding to the observed HIV protease activities in terms of experimental IC50 data.


Assuntos
Aminocaproatos/farmacologia , Infecções por HIV/tratamento farmacológico , Inibidores da Protease de HIV/farmacologia , HIV-1/efeitos dos fármacos , Lactamas/farmacologia , Lactonas/farmacologia , Peptídeos/química
7.
Anim Biotechnol ; 26(4): 268-72, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26158457

RESUMO

Bovine herpesvirus-1 (BoHV-1) is an important viral pathogen affecting cattle and causing numerous reproductive disorders leading to significant economic losses to the cattle industry. The control programs for BoHV-1 are widely based on the use of glycoprotein E-deleted marker vaccines, wherein detection and differentiation of wild-type and gE-deleted vaccine strains is of crucial importance for proper disease management. In this study, we report rapid and simple loop-mediated isothermal amplification (LAMP) assays for detection and differentiation of gE-deleted BoHV-1 from wild-type virus under isothermal conditions. The assays could be completed in 90 mintes, including viral DNA isolation, target amplification and visual interpretation of results with naked eye. The analytical sensitivity of the assays was 10 times higher than conventional PCR and could detect as little as 100 fg of viral DNA per reaction. The applicability of LAMP for detection of BoHV-1 in bovine semen was assessed by testing semen samples collected from breeding bulls and compared with TaqMan real-time PCR (as gold standard). The LAMP assays had diagnostic specificity of 100%. The diagnostic sensitivity was 88.2% and 83.3% for gB- and gE-LAMP, respectively, when compared with TaqMan real-time PCR. Our results have shown that the LAMP method developed in this study is a potential tool for rapid, sensitive, specific, cost-effective, and user-friendly detection and differentiation of wild type BoHV-1 from gE-deleted marker vaccine.


Assuntos
Herpesvirus Bovino 1/genética , Técnicas de Amplificação de Ácido Nucleico/métodos , Técnicas de Amplificação de Ácido Nucleico/veterinária , Vacinas Marcadoras/genética , Virologia/métodos , Animais , Bovinos , Masculino , Sêmen/virologia
8.
Arch Virol ; 159(4): 641-8, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24122110

RESUMO

Bovine herpesvirus 1 (BoHV-1) is the most common viral pathogen found in bovine semen, causing numerous reproductive disorders leading to economic losses to the cattle industry. For rapid detection of BoHV-1 in bovine semen, in this study, we applied a loop-mediated isothermal amplification (LAMP) assay. The assay could be completed within 90 min, including total DNA isolation, target amplification, and visual interpretation of positive or negative results with the naked eye. The assay detected as little as 10 fg of BoHV-1 DNA per reaction. The analytical sensitivity of the assay was 0.2 TCID50 BoHV-1 per reaction, which was 100 times more sensitive than conventional PCR and comparable to TaqMan real-time PCR. The applicability of the assay was assessed by analysing 118 semen samples collected from breeding bulls. On comparison with TaqMan real-time PCR, the LAMP assay had a diagnostic sensitivity of 97 %, specificity of 100 %, and accuracy of 99.2 % for detection of BoHV-1 in bovine semen. The LAMP assay developed in this study is a rapid, sensitive, and cost-effective alternative for detection of BoHV-1 in bovine semen.


Assuntos
Doenças dos Bovinos/virologia , Infecções por Herpesviridae/veterinária , Herpesvirus Bovino 1/isolamento & purificação , Técnicas de Diagnóstico Molecular/métodos , Técnicas de Amplificação de Ácido Nucleico/métodos , Sêmen/virologia , Medicina Veterinária/métodos , Animais , Bovinos , Infecções por Herpesviridae/virologia , Herpesvirus Bovino 1/genética , Sensibilidade e Especificidade , Fatores de Tempo
9.
Indian J Physiol Pharmacol ; 58(1): 56-60, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25464678

RESUMO

Central nervous system (CNS) dysfunction is an important consequence of thyroid deficiency. Cranial nerves are frequently affected in hypothyroid process. On routine nerve conduction studies, symptomatic peripheral and cranial neuropathy can be detected, however, diagnosing subclinical cranial neuropathy pose the major problem. Blink reflex (BR), has been shown to be an effective method for revealing subclinical involvement of cranial nerves in generalized neuropathies. The present study was undertaken to evaluate the efficacy of BR as a method for early diagnosis of subclinical cranial neuropathy in hypothyroid patients with or without overt peripheral polyneuropathy. A case control study was conducted on 150 subjects aged 18 years and above (100 controls, 50 cases). A routine nerve conduction study and BR evaluation was done in all the subjects. We found abnormal BR response in 50% of hypothyroid patients studied. In hypothyroid patient without polyneuropathy R1 latency was significantly prolonged (P < 0.05 Vs control). Ipsilateral and contralateral R2 latencies were significantly prolonged in hypothyroid cases with or without polyneuropathy on bilateral stimulation. Magnitude of prolongation was greater in with polyneuropathy group. In conclusion, study suggests that BR is a useful non-invasive method for the detection of clinically silent cranial nerve compromise in hypothyroid patients.


Assuntos
Piscadela/fisiologia , Hipotireoidismo/fisiopatologia , Polineuropatias/fisiopatologia , Reflexo/fisiologia , Adulto , Estudos de Casos e Controles , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
10.
JNMA J Nepal Med Assoc ; 62(269): 37-39, 2024 Jan 02.
Artigo em Inglês | MEDLINE | ID: mdl-38410014

RESUMO

Introduction: Obstructive sleep apnea-hypopnea syndrome is a major health public problem, with a possible contribution to cardiovascular disease and obesity. There is evidence of a bidirectional relationship between obesity and obstructive sleep apnea-hypopnea syndrome. There is little to no reporting of obstructive sleep apnea-hypopnea syndrome in rural subjects. The study aimed to find out the prevalence of obstructive sleep apnea hypopnea syndrome among obese patients visiting the outpatient Department of a tertiary care centre. Methods: A descriptive cross-sectional study was conducted among obese individuals who attended a tertiary care centre between 4 June 2018 to 6 August 2018. Ethical approval was obtained from the Institutional Ethics Committee. A convenience sampling method was used. The point estimate was calculated at a 95% Confidence Interval. Results: Among 33 patients, obstructive sleep apnea-hypopnea syndrome was seen in 5 (15.15%) (2.92-27.38, 95% Confidence Interval) patients. Among 33, 3 (60%) were female and 2 (40%) male. Conclusions: The prevalence of obstructive sleep apnea-hypopnea syndrome was similar to other studies done in similar settings. Keywords: obesity; obstructive sleep apnea syndrome; polysomnography; waist circumference.


Assuntos
Pacientes Ambulatoriais , Apneia Obstrutiva do Sono , Humanos , Masculino , Feminino , Estudos Transversais , Centros de Atenção Terciária , Apneia Obstrutiva do Sono/epidemiologia , Obesidade/epidemiologia , Síndrome
11.
Cureus ; 16(1): e51673, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38313916

RESUMO

BACKGROUND: Guillain-Barré syndrome (GBS) is a condition characterized by acute and progressive weakness that impacts the limbs, facial muscles, and bulbar muscles due to acute polyneuro-radiculopathy. Typically, an infection that results in immune-mediated nerve dysfunction is what starts the disease. Patients often encounter paresthesia or discomfort before progressing to muscle weakness, initially in the lower extremities (which may include some proximal components) and subsequently in the upper extremities. The features of polyneuropathy identified during electrophysiology tests, bolstered by evidence of acquired demyelination in the nerve conduction study (NCS), support the clinical diagnosis of GBS. In peripheral neuropathies, NCS often reveals abnormalities in nerve conduction parameters. A specific pattern observed in the sensory nerve conduction study (SNCS), referred to as "sural sparing," signifies that the sural nerve, located near the calf muscles, remains relatively unaffected compared to other sensory nerves. Very few studies have been conducted to investigate improvements in sensory nerve conduction (SNC) parameters before and after intravenous immunoglobulin (IVIG), offering limited clinical correlation for the recovery and prognosis of the disease. The study aimed to observe the NCS parameters of the sensory nerves in both the upper and lower limbs, before and after the infusion of IVIG. METHODOLOGY: This study was an observational investigation conducted in the neurophysiology laboratory of the Physiology Department at a rural medical college in central India. Fifty clinically diagnosed cases of GBS aged between 18 and 60 years were referred from the Department of Medicine to the Physiology Department for conducting the NCS. Basic sociodemographic information, along with clinical history, was collected. Subsequently, the RMS EMG EP Mark-II machine was employed to examine the sensory nerve action potentials (SNAPs), such as amplitude (in mV) and conduction velocity (in ms), of the sensory nerves in both the upper and lower limbs before and after IVIG infusion. The IVIG infusion occurs within one week of clinically diagnosing GBS. Following an initial NCS, a second NCS follow-up study was conducted one week after the IVIG infusion to analyze the changing trend in sensory nerves. RESULTS: Upon analysis, no significant correlation was observed between the pre- and post-IVIG SNAPs of the median and ulnar nerves. However, the sural nerve conduction velocity's p-value of 0.033 demonstrated statistical significance, suggesting that the sural nerve is comparatively spared, confirming sural sparing. However, the SNAP of the sensory nerves in GBS patients showed a significant improvement overall, and only NCS quantified the percentage of improvement. CONCLUSION: According to the study, the NCS of sensory nerves showed a positive change in the parameters examined before and after the infusion of IVIG. This underscores the timely intervention of GBS with IVIG, and conducting the sensory conduction study diligently will enhance knowledge about the recovery period. Additionally, it supports the treating physician in making informed interventions based on the results post-IVIG infusion. This enhancement in the sensory nerves can only be quantified through NCS.

12.
Artigo em Inglês | MEDLINE | ID: mdl-39056115

RESUMO

Background: The rates and risk factors for wound complications following staged reconstruction after facial lentigo maligna (LM) resection have not been well described. Objectives: (1) To identify the rate and types of wound complications, including infection, graft necrosis, distal flap necrosis, hematoma, superficial epidermolysis, and seroma among patients undergoing staged reconstruction after resection of LM as documented in the surgeon's clinical notes within 30 days of the procedure. (2) To determine a threshold defect size that may predict the development of wound complications. Design and Outcomes: Retrospective review at an academic medical center of patients who underwent staged reconstruction after facial LM resection over a 5-year period. Results: Ninety-eight patients were identified with a mean age of 69.2 ± 13.6 years; 37% of patients were female. The most common defect sites were the cheek (n = 41; 42%) and nose (n = 22; 22%). Twenty-five of 98 patients (26%) demonstrated complications, with the most common being wound infection (36%) and graft necrosis (24%). Those receiving perioperative antibiotics had lower rates of complication (odds ratio [OR]: 0.36; 95% confidence interval [CI]: 0.13,0.96; p = 0.041). Defects greater than 2.7 cm in maximal diameter had the highest sensitivity for predicting complications. Conclusions: Patients undergoing staged reconstruction after facial LM resection have a high rate of wound complication (26%) and defect size > 2.7 cm may be an important risk factor.

13.
Org Biomol Chem ; 11(48): 8294-7, 2013 Dec 28.
Artigo em Inglês | MEDLINE | ID: mdl-24217690

RESUMO

Herein, we report the development of mild, organocatalyzed routes to novel carbapenam derivatives through aldol, Mannich and Michael C-C bond forming reactions.


Assuntos
Antibacterianos/síntese química , beta-Lactamas/síntese química , Aldeídos/química , Antibacterianos/química , Catálise , Estereoisomerismo , beta-Lactamas/química
14.
Arch Virol ; 158(11): 2323-32, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-23754741

RESUMO

Small interfering RNAs (siRNAs) targeting rabies virus (RV) glycoprotein (G) and nucleoprotein (N) genes were evaluated as antiviral agents against rabies virus in vitro in BHK-21 cells. To select effective siRNAs targeting RV-G, a plasmid-based transient co-transfection approach was used. In this, siRNAs were expressed as short hairpin RNAs (shRNAs), and their ability to inhibit RV-G gene expression was evaluated in cells transfected with a plasmid expressing RV-G. The nine different siRNAs designed to target RV-G exhibited varying degrees of knockdown of RV-G gene expression. One siRNA (si-G7) with considerable effect in knockdown of RV-G expression also demonstrated significant inhibition of RV multiplication in BHK-21 cells after in vitro challenge with the RV Pasteur virus-11 (PV-11) strain. A decrease in the number of fluorescent foci in siRNA-treated cells and a reduction (86.8 %) in the release of RV into infected cell culture supernatant indicated the anti-rabies potential of siRNA. Similarly, treatment with one siRNA targeting RV-N resulted in a decrease in the number of fluorescent foci and a reduction (85.9 %) in the release of RV. As a dual gene silencing approach where siRNAs targeting RV-G and RV-N genes were expressed from single construct, the anti-rabies-virus effect was observed as an 87.4 % reduction in the release of RV. These results demonstrate that siRNAs targeting RV-G and N, both in single and dual form, have potential as antiviral agent against rabies.


Assuntos
Antígenos Virais/genética , Antivirais/farmacologia , Inativação Gênica , Glicoproteínas/genética , Proteínas do Nucleocapsídeo/genética , RNA Interferente Pequeno/farmacologia , Vírus da Raiva/efeitos dos fármacos , Proteínas do Envelope Viral/genética , Replicação Viral/efeitos dos fármacos , Animais , Antígenos Virais/metabolismo , Linhagem Celular , Cricetinae , Glicoproteínas/metabolismo , Células HEK293 , Humanos , Proteínas do Nucleocapsídeo/metabolismo , RNA Interferente Pequeno/genética , RNA Interferente Pequeno/metabolismo , Raiva/tratamento farmacológico , Raiva/virologia , Vírus da Raiva/genética , Vírus da Raiva/fisiologia , Proteínas do Envelope Viral/metabolismo
15.
Otolaryngol Clin North Am ; 56(6): 1079-1088, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37353367

RESUMO

Management of maxillofacial trauma is complex and challenging and requires a clear understanding of facial anatomy and function. There are multiple approaches that can be used to access each anatomical region, each with specific indications and complication profiles. Open, "invasive" approaches are being replaced or augmented with minimally invasive and endoscopic approaches when possible. Thorough knowledge of indications, surgical techniques, and potential complications allows surgeons to make appropriate decisions for access and repair of fractures. This article is a comprehensive review of standard and minimally invasive approaches, with description of techniques and pros and cons for their use.


Assuntos
Traumatismos Maxilofaciais , Fraturas Cranianas , Humanos , Traumatismos Maxilofaciais/cirurgia , Ossos Faciais/cirurgia , Esqueleto , Fraturas Cranianas/cirurgia
16.
ACS Chem Neurosci ; 2023 Apr 07.
Artigo em Inglês | MEDLINE | ID: mdl-37027804

RESUMO

The tricyclic antidepressant amoxapine (AMX) has been reported for a rapid onset of action compared to other cyclic antidepressants. It has very low solubility and bioavailability due to first-pass metabolism. Therefore, we planned to develop solid lipid nanoparticles (SLNs) of AMX using a single emulsification method to increase its solubility and bioavailability. HPLC and LC-MS/MS methods were developed further to quantify AMX in the formulation, plasma, and brain tissue samples. The formulation was studied for entrapment efficiency, loading, and in vitro drug release. Particle size and ζ potential analyses, AFM, SEM, TEM, DSC, and XRD were used for further characterization. In vivo oral pharmacokinetic and brain pharmacokinetic studies were performed using Wistar rats. The entrapment and loading efficiencies of AMX in SLNs were 85.8 ± 3.42 and 4.5 ± 0.45%, respectively. The developed formulation had a mean particle size of 151.5 ± 7.02 nm and a polydispersity index of 0.40 ± 0.11. DSC and XRD results indicated that AMX was incorporated into the nanocarrier system in an amorphous form. SEM, TEM, and AFM studies of AMX-SLNs confirmed the particles' spherical shape and nanoscale size. AMX solubility increased by approx. 2.67 times compared to the pure drug. The developed LC-MS/MS method was successfully applied to the oral and brain pharmacokinetic study of AMX-loaded SLNs in rats. Oral bioavailability was enhanced 1.6 times compared to the pure drug. The peak plasma concentrations of pure AMX and AMX-SLNs were 617.4 ± 137.4 and 1043.5 ± 150.2 (ng/mL), respectively. AMX-SLNs showed more than 5.8 times brain concentration compared to the pure drug. Based on the findings, it appears that utilizing a solid lipid nanoparticle carrier to transport AMX can be a highly effective delivery method with improved pharmacokinetic properties in the brain. This approach may prove valuable for future antidepressant treatment.

17.
J Chromatogr A ; 1708: 464358, 2023 Oct 11.
Artigo em Inglês | MEDLINE | ID: mdl-37708671

RESUMO

Lakadong turmeric has been outlined for its high content of curcuminoids across the globe. Three significant molecular markers are widely present in turmeric viz, curcumin, desmethoxycurcumin, and bisdemethoxycurcumin, and they are present very high amount in Lakadong turmeric. Curcuminoids have been reported for structural and spectrum similarity of 3 to 4 nm (432, 434, and 436 nm, respectively). Current purification methods are based on recrystallisation where it is difficult to get highly pure material and preparative methods associated with tedious separation with high cost. Lakadong turmeric has not been explored commercially since long time. No reports are available in the literature with highly pure reference materials with in-depth characterization data and purity assessment. Curcumin, desmethoxycurcumin, and bisdemethoxycurcumin were characterized using different analytical techniques viz, UV-Visible Spectroscopy, Fourier Transform Infrared Spectroscopy (FT-IR), Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA), Proton Nuclear Magnetic Resonance (1HNMR), Carbon-13 Nuclear Magnetic Resonance (13CNMR), High-Resolution Mass Spectrometry (HR-MS) and Inductive Coupled Plasma Mass Spectrometry (ICP-MS). Purified 3 markers has shown High-Performance Liquid Chromatography-Diode Array Detector (HPLC-DAD) purity more than 99.5%. DSC the melting peaks of curcumin, desmethoxycurcumin and bisdemethoxycurcumin were observed at 168 °C, 165 °C, and 210 °C, respectively. These plant-based markers have high commercial potential as reference material for routine Quality Assurance and Quality Control (QAQC) in herbal industries.


Assuntos
Curcumina , Curcuma , Espectroscopia de Infravermelho com Transformada de Fourier , Diarileptanoides , Índia
18.
Mar Biotechnol (NY) ; 25(6): 1057-1075, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37878212

RESUMO

Rohu, Labeo rohita, is one of the most important aquaculture species in the Indian subcontinent. Understanding the molecular-level physiological responses to thermal stress or climate change is essential. In the present work, transcriptome sequencing was carried out in the muscle tissue of the rohu in response to heat stress (35 °C) in comparison with the control (28 °C). A total of 125 Gb of sequence data was generated, and the raw-reads were filtered and trimmed, which resulted in 484 million quality reads. Reference-based assembly of reads was performed using L. rohita genome, and a total of 90.17% of reads were successfully mapped. A total of 37,462 contigs were assembled with an N50 value of 1854. The differential expression analysis revealed a total of 107 differentially expressed genes (DEGs) (15 up-, 37 down-, and 55 neutrally regulated) as compared to the control group (Log2FC > 2, P < 0.05). Gene enrichment analysis of DEGs indicates that transcripts were associated with molecular, biological, and cellular activities. The randomly selected differentially expressed transcripts were validated by RT-qPCR and found consistent expression patterns in line with the RNA-seq data. Several transcripts such as SERPINE1(HSP47), HSP70, HSP90alpha, Rano class II histocompatibility A beta, PGC-1 and ERR-induced regulator, proto-oncogene c-Fos, myozenin2, alpha-crystallin B chain-like protein, angiopoietin-like protein 8, and acetyl-CoA carboxylases have been identified in muscle tissue of rohu that are associated with stress/immunity. This study identified the key biomarker SERPINE1 (HSP47), which showed significant upregulation (~ 2- to threefold) in muscle tissue of rohu exposed to high temperature. This study can pave a path for the identification of stress-responsive biomarkers linked with thermal adaptations in the farmed carps.


Assuntos
Carpas , Cyprinidae , Animais , Transcriptoma , Cyprinidae/genética , RNA-Seq , Genes Reguladores
19.
JAMA ; 317(16): 1684-1685, 2017 04 25.
Artigo em Inglês | MEDLINE | ID: mdl-28444261

Assuntos
Dilatação , Nariz , Humanos
20.
WMJ ; 111(6): 289-92, 2012 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23362706

RESUMO

INTRODUCTION: In this report we discuss the etiology, common locations, diagnostic approach, and treatment of a dermoid cyst. CASE PRESENTATION: A 22-year-old man arrived at the emergency department complaining of submental fullness, an increase in snoring, choking, gagging, and difficulty breathing. The patient was taken to the operating room for a complete resection of a large dermoid cyst that was compressing his airway. DISCUSSION: Dermoid cysts are uncommon head and neck tumors mainly presenting in patients aged 15 to 35. The origin of dermoid cysts is thought to be congenital in most cases, but they can also develop from acquired factors such as trauma or surgical implantation that forces epithelial cells into deep tissues. CONCLUSION: Although benign and often asymptomatic, dermoid cysts may cause other associated symptoms due to compression of structures in the head and neck.


Assuntos
Obstrução das Vias Respiratórias/etiologia , Cisto Dermoide/complicações , Cisto Dermoide/diagnóstico , Neoplasias de Cabeça e Pescoço/complicações , Neoplasias de Cabeça e Pescoço/diagnóstico , Obstrução das Vias Respiratórias/cirurgia , Cisto Dermoide/patologia , Cisto Dermoide/cirurgia , Diagnóstico Diferencial , Neoplasias de Cabeça e Pescoço/patologia , Neoplasias de Cabeça e Pescoço/cirurgia , Humanos , Masculino , Adulto Jovem
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