Development and Validation of UPLC-MS/MS Method for Rapid Simultaneous Determination of Levothyroxine and Liothyronine in Human Serum

A simple ultra-high performance liquid chromatography coupled with tandem mass spectrometry (UPLC-MS/MS) method was developed and fully validated to simultaneously determine levothyroxine (LT4) and liothyronine (LT3) in human serum. Sample preparation was done through protein precipitation with acetonitrile. HyPURITY C18 column was selected to achieve rapid separation for LT4 and LT3 within 4 min. Electrospray ionization (ESI) under multiple reaction monitoring (MRM) was used to monitor the ion transitions for LT4 (m/z 777.54→731.52), LT3 (m/z 651.64→ 605.65) and internal standard LT4-D3 (m/z 780.53 →734.19), operating in the positive ion mode. The method was proved to be accurate (82.35% to 113.56%) and precise (0.73% to 8.28%) over concentration range of 50.37 ng/ml – 300.13 ng/ml for LT4 and 0.5 ng/ml – 50.37 ng/ml for LT3. The validated method could be applied for pharmacokinetic study or bioequivalence testing of combination products of LT4 and LT3. Keywords: Levothyroxine; Liothyronine; Ultra Performance Liquid Chromatographic; Mass Spectrometry; Human Seru

Role of Anti-Viral Drugs in Combating SARS-CoV-2

Viruses are the eventual assertion of parasitism, they not only take nutriments from the host cell, apart from that they direct its metabolic machinery to amalgamate novel virus particle and to diminish the ability of flu viruses to reproduce in an individual antiviral drugs are used. When used as directed, antiviral drugs may help to lessen the duration of flu symptoms and may reduce the severity of common flu symptoms. Antiviral drugs are the class of drugs which comes under the antimicrobials, and that also accommodates the larger group i.e. of antibiotics. They are broad-spectrum in nature and can be effective against a wide range of viruses. They can be used as a single drug as well as in combination of drugs. Antiviral drugs are dissimilar from the antibiotics, they do not demolish their target pathogen ideally they obstruct development of pathogen. To the greatest extent antiviral drugs currently accessible are delineate to deal with herpes viruses, covid-19, HIV, the hepatitis b and c viruses herpes simplex, small pox, picornavirus and influenza a and b viruses etc. Scientists are searching to drag out the range of antiviral to the other families of pathogens. They mainly act by inhibiting the attachment of viruses on cells, prevent genetic reproduction of virus, prevent viral protein production and vital for production of virus. The emanation of antiviral is generally the outcome about an appreciably expanded skills or proficiency of the generative, microscopic and atomic activity of organisms, allowing biomedical analyst to acknowledge the structure, mechanism of action and activity of viruses, significant progress within the procedure for come across the current drugs. Coronavirus 2019 (COVID 19) is highly infectious disease triggered by SARS-CoV-2 (severe acute respiratory syndrome) coronavirus 2 causing nearly 2.9 million deaths worldwide. With the emergence of SARS-CoV-2, the repurposing of antiviral drugs has come into picture

Ageratum conyzoides L. and Its Secondary Metabolites in the Management of Different Fungal Pathogens

Ageratum conyzoides L. (Family—Asteraceae) is an annual aromatic invasive herb, mainly distributed over the tropical and subtropical regions of the world. It owns a reputed history of indigenous remedial uses, including as a wound dressing, an antimicrobial, and mouthwash as well as in treatment of dysentery, diarrhea, skin diseases, etc. In this review, the core idea is to present the antifungal potential of the selected medicinal plant and its secondary metabolites against different fungal pathogens. Additionally, toxicological studies (safety profile) conducted on the amazing plant A. conyzoides L. are discussed for the possible clinical development of this medicinal herb. Articles available from 2000 to 2020 were reviewed in detail to exhibit recent appraisals of the antifungal properties of A. conyzoides. Efforts were aimed at delivering evidences for the medicinal application of A. conyzoides by using globally recognized scientific search engines and databases so that an efficient approach for filling the lacunae in the research and development of antifungal drugs can be adopted. After analyzing the literature, it can be reported that the selected medicinal plant effectively suppressed the growth of numerous fungal species, such as Aspergillus, Alternaria, Candida, Fusarium, Phytophthora, and Pythium, owing to the presence of various secondary metabolites, particularly chromenes, terpenoids, flavonoids and coumarins. The possible mechanism of action of different secondary metabolites of the plant against fungal pathogens is also discussed briefly. However, it was found that only a few studies have been performed to demonstrate the plant’s dosage and safety profile in humans. Considered all together, A. conyzoides extract and its constituents may act as a promising biosource for the development of effective antifungal formulations for clinical use. However, in order to establish safety and efficacy, additional scientific research is required to explore chronic toxicological effects of ageratum, to determine the probability of interactions when used with different herbs, and to identify safe dosage. The particulars presented here not only bridge this gap but also furnish future research strategies for the investigators in microbiology, ethno-pharmacology, and drug discoveryS

Association of Cutibacterium acnes with human thyroid cancer

IntroductionThe diverse subtypes of thyroid carcinoma have distinct clinical outcomes despite a comparable spectrum of underlying genetic alterations. Beyond genetic alterations, sparse efforts have been made to characterize the microbes associated with thyroid cancer. In this study, we examine the microbial profile of thyroid cancer.MethodsWe sequenced the whole transcriptome of 70 thyroid cancers (40 papillary and 30 anaplastic). Using Infectious Pathogen Detector IPD 2.0, we analysed the relative abundance of 1060 microbes across 70 tumours from patients with thyroid cancer against 118 tumour samples from patients with breast, cervical, colorectal, and tongue cancer.ResultsOur analysis reveals a significant prevalence of Cutibacterium acnes in 58.6% thyroid cancer samples compared to other cancer types (p=0.00038). Immune cell fraction analysis between thyroid cancer samples with high and low Cutibacterium loads identify enrichment of immunosuppressive cells, including Tregs (p=0.015), and other anti-inflammatory cytokines in the tumour microenvironment, suggesting an immune evasion/immunosuppression milieu is associated with the infection. A higher burden of Cutibacterium acnes was also found to be associated with poor survival defining a distinct sub-group of thyroid cancer.ConclusionCutibacterium acnes is associated with immune suppression and poor prognosis in a subpopulation of thyroid cancer. This study may help design novel therapeutic measures involving appropriate antibiotics to manage the disease better

Antianxiety Activity of Methanol Extract of Gelsemium sempervirens (Linn.) Ait.

Background: Despite significant advances in understanding and management of neuropsychiatric disorders during past few decades, anxiety and depression, still remains the leading cause of deaths, primarily for want of effective and safe treatment of these ailments. Approximately, two third of the anxious or depressed patients respond to the currently available treatment but the magnitude of improvement is still disappointingPurpose of Study: The aim of the present study was to investigate the antianxiety activity of Gelsemium sempervirens (Linn.) Ait. Various doses (50,100, 150, 200mg/kg) of plant extracts viz., of petroleum ether, chloroform, methanol and water were administered orally to Swiss Albino Mice before evaluating their behavioural pattern. Diazepam (2.5 mg/kg) was used as standard drug.Result: The methanol extract of G. sempervirens (150 mg/kg) increased the mean time spent, mean number of arms entries in the open arms of elevated plus maze (EPM) and decreased the mean time spent in the closed arms. The locomotor activity of methanol extract was not affected to the same extent as observed for diazepam.Conclusion: The results suggested that methanol extract of G. sempervirens possess anxiolytic effects with no sedative activity when compared to diazepam

Significance of antinuclear antibody in Indian patients with rheumatoid arthritis

This study aimed to understand the differences in disease duration, serological parameters, extra Articular Manifestation and treatment of Indian RA patients depending upon antinuclear antibody (ANA) positivity. This study was planned as a cross-sectional observational study, wherein 184  patients 18 years and above diagnosed as RA and tested for Antinuclear Antibody, who reported for consultation at rheumatology department of Medanta –The Medicity hospital from August 2020 to February 2022  were enrolled in this study. Patient’s demographic data, present complains, extra –articular features, seronegative features, associated medical conditions like CAD, HTN, DM, Tuberculosis, hypothyroidism etc,  family history current and previous  was collected on  the day of consultation with physician. Cross tables were generated and Chi square test was used for testing of association for comparison between groups. The study included 184 patients of RA. ANA positivity rate was 45.1% (n=83). The majority of the patients were female- 155(84.2%). There was no significant association was observed between the study groups in terms of gender, mean age, mean age of onset, and median disease duration.&nbsp

Effect of Extraction Methods on the Antioxidant Potential and Cytotoxicity of the Combined Ethanolic Extracts of <i>Daucus carota</i> L., <i>Beta vulgaris</i> L., <i>Phyllanthus emblica</i> L. and <i>Lycopersicon esculentum</i> against Gastric Adenocarcinoma Cells

Frequent consumption of fruits and vegetables in the daily diet may alleviate the risk of developing chronic diseases. Daucus carota L. (carrot), Beta vulgaris L. (beetroot) Phyllanthus emblica L. (amla), and Lycopersicon esculentum M (tomatoes) are traditionally consumed functional foods that contain a high concentration of antioxidants, ascorbic acid, polyphenols, and numerous phytochemicals. This study assessed how three distinct preparation methods affect the phenolic, flavonoid, carotenoid, and ascorbic acid contents, antioxidant level, and cytotoxicity of the combined fruit extract. The fruit samples were taken in the ratio of carrot (6): beetroot (2): tomato (1.5): amla (0.5) and processed into a lyophilized slurry (LS) extract, lyophilized juice (LJ) extract, and hot-air oven-dried (HAO) extract samples. The sample extracts were assessed for their phytoconstituent concentrations and antioxidant and cytotoxic potential. The total phenolic content in LS, LJ, and HAO extracts was 171.20 ± 0.02, 120.73 ± 0.02, and 72.05 ± 0.01 mg gallic acid equivalent/100 g, respectively and the total flavonoid content was 23.635 ± 0.003, 20.754 ± 0.005, and 18.635 ± 0.005 mg quercetin equivalent/100 g, respectively. Similarly, total ascorbic acid content, carotenoids, and antioxidant potential were higher in the LS and LJ extracts than in HAO. Overall, the LS extract had a substantially higher concentration of phytochemicals and antioxidants, as well as higher cytotoxic potential, compared to the LJ and HAO extracts. The LS extract was tested in the MKN-45 human gastric cancer cell line to demonstrate its effective antioxidant potential and cytotoxicity. Hence, lyophilization (freezing) based techniques are more effective than heat-based techniques in preserving the phytoconstituents and their antioxidant and cytotoxic potential