Effects Of Antihistamines Research Articles

Comprehensive Analysis of Allerkhand Tablet: A Novel Ayurvedic Herbal Formulation helps to regulates the Allergic Conditions

The increasing interest in alternative and complementary therapies has spotlighted Ayurveda, an ancient system of medicine, for its holistic approach in managing allergies. Ayurvedic treatments for allergy typically focus on restoring balance of the Vitiated Doshas. This may involve dietary corrections, lifestyle changes, and the use of herbal remedies and rejuvenation therapies. Curcumin, the active component of turmeric, has been extensively studied for its anti-inflammatory, antioxidant, and immunomodulatory properties, which can be beneficial in managing allergic conditions. The current study was conducted for a scientific evaluation of Allerkhand tablet, an Ayurvedic patent medicine used to treat allergy and boost immunity. Allerkhand, a poly-herbal tablet formulation with Curcuma longa as the main ingredient and 18 other constituents, serves to improve immunity by combining anti-allergic and anti-histaminic effects. The product was subjected to qualitative phytochemical HPTLC, HPLC, and anti-microbial studies. Phytochemical analysis of Allerkhand in aqueous and methanolic extracts revealed the presence of 13 and 8 common compounds, respectively. According to HPTLC and HPLC analysis, sufficient quantity of curcuminoids are present in tablets. Significant antimicrobial zones were found against six bacterial strains. These findings support the traditional use of Allerkhand tablets as a natural remedy in regulating allergic conditions.

Eosinophilic cationic protein and D-Dimer are potential biomarkers to predict response to antihistamines but not to omalizumab in chronic spontaneous urticaria

ABSTRACT Introduction: Biomarkers that could reliably anticipate the effectiveness of antihistamines and omalizumab in treating chronic spontaneous urticaria (CSU) have not been conclusively identified. Our objective was to examine how eosinophilic cationic protein (ECP), tryptase, D-dimer, and total Immunoglobulin E (IgE) impact the response to antihistamine and omalizumab treatments in individuals with CSU. Methods: In this cross-sectional retrospective study, CSU patients that had undergone treatment with either antihistamines or omalizumab for a minimum of 12 weeks between 2015 and 2021 at an Allergy and Immunology Department were analyzed. Several demographic and laboratory parameters including eosinophil counts, mean platelet volüme (MPV), sedimentation, C-reactive protein (CRP), antinuclear antibodies (ANA) and Anti-thyroperoxidase (Anti-TPO) and total IgE, tryptase, ECP and D-dimer were retrived from patient files. The association of these biomarkers with Urticaria Control Test (UCT) and the effect of these biomarkers on treatment response were evaluated. Treatment response was assessed using the UCT, with a score of UCT ≥ 12 indicating a responder and UCT < 12 indicating a non responder. Results: The patients in the omalizumab group were older, had a longer disease duration and had worse urticaria control (lower baseline UCT scores). 421 patients were treated with antihistamines and 88 patients were treated with omalizumab. ECP was found to be inversely correlated with baseline UCT (p < 0.001 r=−0.268). ECP and D-dimer levels of non-responder patients in the antihistamine group were significantly higher than in responder patients (ECP: 49 ng/mL vs 28.1 ng/mL, p < 0.001) (D-dimer: 0.60 mg/L vs 0.30 mg/L, p < 0.001), while there were no significant difference in terms of tryptase and total IgE. These four biomarkers were similar, in omalizumab responders and non responders. Conclusion: In this study with CSU, we looked at predictors of responses to treatments. ECP can serve as a marker of poor urticaria control and may predict antihistamine refractoriness along with D-dimer.

Flemingia Strobilifera– An Updated Review on its Pharmacognostic and Pharmacological Properties

Background: Our health care system greatly benefits from the use of old medical techniques. In Ayurvedic medicine to improve manhood, Flemingia strobilifera (Lam.) is utilized as an herb. The Fabaceae family, which includes Flemingia strobilifera (Palas), is widely cultivated throughout India. There are more than forty species of Flemingia throughout the globe; out of which 15 species of this genus are in India. Objective: To learn more details about this plant and various species of Flemingia, specifically the chemical makeup of the plant, its species, and/or its elements, traditional and medical uses for the plant. This review article also focuses on the origin, history, classification, phytochemistry, morphology, microscopy, and pharmacological aspects. Methods: A detailed and extensive literature survey through research findings, review articles, Google sources, database etc was done to explore the aspect of Flemingia species for its various physical, chemical, pharmacological, phytochemistry and related fields. Results: Our findings report that several representatives of this genus have been employed as vermifuges and remedies for fever, diarrhea, indigestion in traditional medicine. The plant's anthelmintic, anticancer, antirheumatic, antiinflammatory, antioxidant and antihistaminic effects are well documented. According to literature reports, the chemical constituents of this genus' are flavonoids, glycosides, chalcones, epoxy chromenes, and pterocarpans. Rural and ethnic people regularly use this plant to treat a range of diseases. Conclusion: Research on Flemingia strobilifera has a bright future thanks to its strong natural origin. The uniqueness and usefulness of Flemingia strobilifera was obscured. In future, many more potential of Flemingia could be investigated in combination with other herbs.

The Effect of In Vitro Digestion on the Anti-allergic, Anti-Inflammatory and Antioxidant Properties of Purple Rice and Purple Barley Phenolic Extracts in Caco-2 and RBL-2H3 Cells

Gastrointestinal diseases are associated with increased oxidative stress and inflammation. Pigmented cereal polyphenols are believed to have therapeutic potential. However, the impact of digestion on their bioactivity has not been fully elucidated. This study investigated the impact of digestion on the ability of purple rice extract (PRx) and purple barley (PBx) to alleviate oxidative stress-induced intestinal epithelial cell death and allergic inflammation. The study used a human colon adenocarcinoma (Caco-2) cell line to simulate intestinal oxidative stress for 4 h using 1 mM hydrogen peroxide. To evaluate the protective effects of digested and undigested cereal extracts, cells were first pre-treated with varying concentrations (50, 100, 200, and 500 μg/ml) of both purple rice (PRx) and purple barley (PBx) extracts. A rat basophilic leukemia (RBL-2H3) cell line was used to investigate the ability of the extracts to prevent calcium ionophore-induced histamine and cytokine release. The results demonstrated that both digested and undigested phenolic extracts prevented oxidative stress-induced cell death in Caco-2 cells and reduced Interleukin (IL)-8 secretion. PRx showed greater cytoprotective effects than PBx. Both digested and undigested extracts showed a time-dependent antihistamine effect, with the greatest inhibitory effects observed after 2 h and 4 h of treatment with PRx. Additionally, the extracts significantly attenuated the release of several cytokines including IL-2, IL-4, IL-13, monocyte chemoattractant protein-1, interferon-gamma, and tumour necrosis factor-alpha. Overall, the study demonstrates that both digested and undigested pigmented rice and barley extracts are potential sources of polyphenols which may promote intestinal health and alleviate allergic inflammation.

Natural products for the treatment of allergic rhinitis: focus on cellular signaling pathways and pharmacological targets.

Allergic rhinitis is an inflammatory disease dependent on immunoglobulin E and causes inflammation of the nasal mucosa, leading to decreased quality of life for affected patients. Since common treatments, including corticosteroids and antihistamines, have temporary therapeutic effects and numerous side effects, investigating natural compounds effective in improving allergic rhinitis with low complications and high efficacy can be significant and necessary. This study aims to present a comprehensive and critical evaluation of the effect of natural compounds in improving allergic rhinitis. Studies were identified through systematic searches of ScienceDirect, PubMed, Scopus, and Web of Sciences databases. Eligibility checks were conducted based on predefined selection criteria. Forty-six articles were included in this study. Phytochemicals, including flavonoids, alkaloids, terpenoids, and other compounds showed significant anti-inflammatory and antihistaminic effects. These compounds alleviate allergic rhinitis symptoms by inhibiting inflammatory mediators, oxidative stress, apoptosis, and key signaling pathways such as MAPK/NFκB and TLR4/MyD88/NF-κB. Phytochemicals exhibit anti-inflammatory and antioxidant properties, making them.

Preventive effects of first-generation antihistamine on emergence agitation or delirium: a systematic review.

The effects of first-generation antihistamines in preventing postoperative emergence agitation or delirium are unclear. Determining the postoperative effects of first-generation antihistamines may provide important insights into the management of patient safety. Therefore, we performed a systematic review of randomized controlled trials (RCTs) evaluating the efficacy and safety of postoperative first-generation antihistamines. Patients who used first-generation antihistamines in the intensive care unit or operating room were included. Primary outcomes were assessed postoperative emergence agitation or delirium with binary and continuous variables. The secondary outcome was any adverse event. Nine studies were included. The frequency of postoperative emergence agitation, measured using binary variables, tended to be lower in patients receiving chlorpheniramine or diphenhydramine than those receiving saline. However, evaluation using the Richmond Agitation-Sedation Scale as a continuous variable revealed that only chlorpheniramine was effective at lowering postoperative emergence agitation. Only one study assessed delirium but found no benefit of first-generation antihistamines. Adverse events for first-generation antihistamines did not differ from that of other drugs. Our results provide limited evidence that some first-generation antihistamines may prevent postoperative emergence agitation and are safe. To further verify this possibility, new RCTs with clear and universal assessment criteria for postoperative emergence agitation or delirium should be conducted.

Intranasal Versus Oral Treatments for Allergic Rhinitis: A Systematic Review With Meta-Analysis

BackgroundTreatments for allergic rhinitis include intranasal or oral medications. ObjectiveTo perform a systematic review with meta-analysis comparing the effectiveness of intranasal corticosteroids or antihistamines versus oral antihistamines or leukotriene receptor antagonists in improving allergic rhinitis symptoms and quality of life. MethodsWe searched four bibliographic databases and three clinical trial datasets for randomised controlled trials (i) assessing patients ≥12 years old with seasonal or perennial allergic rhinitis, and (ii) comparing intranasal corticosteroids or antihistamines versus oral antihistamines or leukotriene receptor antagonists. We performed a meta-analysis of the Total Nasal Symptom Score (TNSS), Total Ocular Symptom Score (TOSS), Rhinoconjunctivitis Quality of Life Questionnaire (RQLQ), development of adverse events, and withdrawals due to adverse events. Certainty of evidence was assessed using GRADE. ResultsWe included 35 studies, most of which assessed patients with seasonal allergic rhinitis and displayed an unclear risk of bias. Superiority of intranasal treatments was found for all assessed outcomes. Intranasal corticosteroids were more effective than oral antihistamines at improving the TNSS (MD=-0.86; 95%CI=-1.21;-0.51; I2=70%), TOSS (MD=-0.36; 95%CI=-0.56;-0.17; I2=0%) and RQLQ (MD=-0.88; 95%CI=-1.15;-0.61; I2=0%), being mostly associated with clinically meaningful improvements. Superiority of intranasal corticosteroids at improving the TNSS was also found against oral leukotriene receptor antagonists (MD=-1.05; 95%CI=-1.33;-0.77). Intranasal antihistamines were more effective than oral antihistamines at improving the TNSS (MD=-0.47; 95%CI=-0.81;-0.14; I2=0%) and RQLQ (MD=-0.31; 95%CI=-0.56;-0.06; I2=0%). ConclusionsRandomized controlled trials suggest that intranasal treatments are more effective than oral treatments at improving symptoms and quality of life in seasonal allergic rhinitis.

Antihistamine and COVID-19 outcomes in outpatients.

The World Health Organization declared the coronavirus disease 2019 (COVID-19) pandemic on March 11, 2020. Since then, researchers have been investigating the efficacy and side effects of its medication, up until now. From the viewpoint of Persian medicine, some medications such as antihistamines may cause retention of secretions and lead to exacerbation and spread of the disease in the body. There are studies with conflicting results regarding the effectiveness of antihistamines in COVID-19. Systematic reviews found a lack of data on beneficial effect of antihistamine-decongestant-analgesic combinations for the common cold and a limited short-term effect of antihistamines on severity of overall symptoms. This prospective cohort study was designed to investigate the relationship between the use of antihistamines and the severity of COVID-19 symptoms. Three hundred patients with a diagnosis of COVID-19 participated in the study in Shiraz, Iran from December 4, 2021 until January 24, 2022. The interviews were conducted via phone call by a single interviewer. Patients were followed weekly for 4 weeks. We collected information by using a data collection form, containing demographic information, underlying disease, COVID-19 symptoms, treatment methods, medications, and a list of antihistamines and herbs that might have been used. Generalized estimating equations were applied to assess the relationship between the severity of COVID-19 and the use of antihistamines, taking into account potential confounding factors such as time and herbal consumption. The difference in the severity of COVID-19 disease in antihistamine users compared to nonusers was not significant in 4 weeks despite the higher baseline severity in nonusers. The comparison of two groups of antihistamine users and nonusers showed that there was a significant difference (p = 0.001) regarding the use of herbal medicines.

Evolution, mechanism of action, and clinical applications of three generations of Antihistamines

Introduction. This review investigates the evolution, mechanisms of action, and clinical applications of three generations of antihistamines. Materials and methods: To identify relevant studies, an extensive search was performed across multiple databases, including PubMed, MEDLINE, Web of Science, and Scopus, using a strategic combination of keywords and MeSH terms. The selection process yielded relevant scientific literature sources published between 1985 and 2023. Results and discussion: the study demonstrated that the initial step in the creation and development of antihistamines involved analysing the mechanisms of anaphylaxis and allergy. This analysis led to the discovery of histamine as a mediator of allergic reactions and subsequently to the synthesis of substances with antihistamine effects, resulting in the gradual discovery of three generations of antihistamines. These drugs are designed to block H1-histamine receptors to eliminate allergic manifestations. Due to their non-selective antihistamine activity, first-generation drugs have many side effects, primarily sedation, in addition to their intended therapeutic effects. Second- and third-generation drugs are selective for peripheral H1 receptors and have significantly fewer side effects. The third generation of drugs, as active metabolites of the second generation, demonstrate the highest efficacy and safety profile. First-generation medicines are used for emergency care in acute allergic reactions and to reduce local allergy manifestations, whereas second and third generations are used to treat symptoms of seasonal and chronic allergic rhinitis. Conclusions: The significance of the study lies in the potential application of its results in the clinical practice of allergists.

Towards full recovery with lurasidone: effective doses in the treatment of agitation, affective, positive, and cognitive symptoms in schizophrenia and of dual psychosis.

The management of schizophrenia necessitates a comprehensive treatment paradigm that considers individual patient nuances and the efficacy of lurasidone in addressing schizophrenia symptoms, particularly at elevated dosages. Numerous randomized trials have affirmed the efficacy of lurasidone across various dimensions of schizophrenia, demonstrating marked enhancements in positive, negative and cognitive symptoms compared to a placebo. In addition, lurasidone exhibits potential in ameliorating agitation amongst acutely ill patients, showcasing greater efficacy at higher doses. However, despite the favourable outcomes observed with higher lurasidone doses, routine clinical practice often opts for lower doses, potentially limiting its maximal therapeutic impact. Furthermore, lurasidone also shows efficacy in reducing post-psychotic depression in dual psychosis. Moreover, practical insights into lurasidone usage encompass swift dose escalation within a 1-5-day span and recommended combination strategies with other medications such as benzodiazepines for insomnia or agitation, beta-blockers for akathisia, and antihistamines or antimuscarinic drugs for patients transitioning rapidly from antipsychotics with substantial antihistamine and/or anticholinergic effects. Finally, a series of clinical cases is presented, highlighting benefits of lurasidone in terms of cognitive function, functional recovery and other therapeutic aspects for the management of schizophrenia.

The add-on effect of an intranasal antihistamine with an intranasal corticosteroid in Japanese cedar pollinosis

The add-on effect of an intranasal antihistamine with an intranasal corticosteroid in Japanese cedar pollinosis

Research Progress in Chemical Synthesis and Biosynthesis of Bioactive Imidazole Alkaloids

Abstract: The imidazole ring is a five membered ring with a simple chemical structure and is widely present in natural products. Due to its unique chemical structure, it is beneficial for the imidazole ring to bind with other functional groups, thus exhibiting a wide range of biological activities. The synthesis of imidazole derivatives often involves the Debus method, Michael addition method, and the use of existing materials to synthesize target compounds through one-pot synthesis. Imidazole compounds have numerous medicinal properties and physiological activities, including antioxidant, antibacterial, anti-inflammatory, antihistamine, hypoglycemic, antiviral, antihypertensive and anticancer effects. In addition to its medicinal chemical significance, imidazole also has industrial applications such as corrosion inhibitors, flame retardants, photography, and electronics. The synthesis and activity research of imidazole and its derivatives have good development prospects. This article reviews the chemical synthesis and biosynthesis of imidazole derivatives, as well as their biological activities.

Therapeutic effect of an Ayurvedic drug in the management of Respiratory Allergic Disorders in children - A comprehensive review

Background: Respiratory allergic disorders (RAD) are the most common allergy symptom seen in children. Respiratory allergies are primarily caused by hyper responsiveness of the respiratory mucosa, which results in histamine release and mast cell activation. In Ayurvedic words, this could be viewed as an abnormality of the body's immune system or Ojus induced by disrupted Vata, Kapha, and Pitta. The prevalence of respiratory allergies in school-aged children in India varies widely, ranging from 5-20%. Methods: This study was completed by gathering the knowledge from classical Ayurvedic literature, research articles, guidelines and PubMed and MedLine databases. Results and Discussion: Dashmoola Katutrayadi drug is mentioned in Sahastra Yogam under Swasa Kasahara Kashaya have Shwas-Kasahar, anti-inflammatory, anti-histaminic and anti-asthmatic effects individually and in combinations. Conclusion: Present review reveals that these drugs have potential to alleviate the severity and frequency of RAD and can be used for the management of the same.

Treatment with Antihistamines and the Risk of Liver Cancer in Patients with Viral Hepatitis: A Multi-Center Cohort Study.

Background: The effects of antihistamines on cancer risk and prognosis have been inconsistent across cancers. The aim of this multi-center cohort study was to investigate the association between antihistamine use and the risk of liver cancer in individuals with viral hepatitis. Methods: This multi-center cohort study included individuals diagnosed with hepatitis B or hepatitis C between January 2008 and March 2022. For antihistamine-treated patients, the index date was the date of antihistamine prescription, and for non-users, it was the date of hepatitis diagnosis. Participants were followed for five years, with the primary outcome of interest being new-onset liver cancer. The incidence rate and the adjusted hazard ratio (aHR) along with its 95% confidence interval (CI) of the outcome were calculated. Subgroup analyses were conducted, stratified by types of viral hepatitis including hepatitis C and hepatitis B. An additional validation study was performed. Results: The study included a total of 7748 patients with viral hepatitis. The incidence rate was 12.58 per 1000 person-years in patients with viral hepatitis on antihistamines, compared to 3.88 per 1000 person-years in those without antihistamine use. After adjusting for factors including age, sex, body mass index (BMI), comorbidities, laboratory data of liver function tests, comedications, and the use of antiviral therapies, the risk of new-onset liver cancer was significantly higher in patients on antihistamines (aHR = 1.83, 95% CI, 1.28-2.60). In patients with hepatitis C, the incidence rate in the antihistamine group was 15.73 per 1000 person-years, while non-users had a rate of 4.79 per 1000 person-years. Patients with hepatitis C on antihistamines had a significantly higher risk of developing liver cancer (aHR = 3.24, 95% CI, 2.16-4.86). Conclusions: This multi-center cohort study reported an increased risk of liver cancer in patients with hepatitis B or hepatitis C treated with antihistamines. Long-term follow-up studies are warranted to validate the findings.

Ameliorative potential of galangin in murine model of ovalbumin-induced allergic rhinitis: a role of PI3K-PKB pathway.

To examine the potential of galangin in a mouse model of ovalbumin (OVA)-induced allergic rhinitis (AR), as chronic AR, induced by immunoglobulin-E (IgE), leads to histamine release and nasal inflammation, and although galangin exhibits antiasthmatic and anti-inflammatory potential, its effect on AR is yet to be investigated. 126 BALB/c mice. AR induction involved sensitizing female mice with OVA (5%, 500 µL, IP) for 14 days. Post OVA challenge, the mice were divided into 7 groups (n = 18/group), including normal, AR control, montelukast (10 mg/kg), galangin (5, 10, and 20 mg/kg), and per se (galangin [20 mg/kg] treatment. Various outcomes were evaluated, including nasal symptoms, histopathology, biochemistry, and nasal lavage fluid inflammatory cytokines and signaling pathways in nasal mucosal to assess galangin potential in AR. In AR mice, galangin (10 and 20 mg/kg) significantly (P < .05) reduced sneezing, rubbing, and nasal discharge post-OVA challenge. Galangin treatment attenuated (P < .05) elevated serum histamine, β-hexosaminidase, IgE, and Immunoglobulin G1 levels in AR control mice. Additionally, galangin significantly (P < .05) decreased OVA-induced alterations in IL-4, IL-6, IL-13, and interferon-γ levels in nasal lavage fluid compared to AR control mice. Western blot analysis demonstrated that galangin lowered OVA-induced AR by significantly (P < .05) downregulating the phosphorylated protein kinase B and mammalian target of rapamycin-protein expressions while markedly (P < .05) upregulating the glycogen synthase kinase-3β protein expressions in nasal mucosal. Galangin also significantly ameliorated (P < .05) the OVA-induced histological aberrations in the nasal mucosa, reflected by reduced eosinophil infiltration, hyperplasia, and edema. Galangin exhibits antihistaminic and anti-inflammatory effects in AR mice by regulating IgE-mediated histamine and inflammatory release and modulating the phosphatidylinositol 3-kinase/Ak strain transforming/mammalian target of rapamycin pathways.

Chemoreactomic analysis of acyzole in comparison with zinc derivatives of nonsteroidal anti-inflammatory drugs

Background. Nonsteroidal anti-inflammatory drugs (NSAIDs) are characterized by ulcerogenic effects and used for effective and safe pharmacotherapy of inflammation and pain. The zinc-containing drug acyzole is a promising anti-inflammatory drug that potentially does not have this drawback. Objective: to conduct chemoreactomic modeling of the pharmacological effects of acyzole and zinc derivatives of well-known NSAIDs (diclofenac, nimesulide, ketorolac).Material and methods. The analysis of the pharmacological capabilities of NSAIDs was based on a chemoinformatic approach, i.e. comparing the chemical structure of the studied molecules with the structures of millions of other molecules with established molecular pharmacological properties. The analysis procedure was based on the latest machine learning technologies developed in the theory of topological and metric analysis of feature descriptions.Results. It was shown that acyzole might have an anti-inflammatory effect due to its impact on the activity of cytokines and, partly, on the metabolism of prostaglandins and leuktrienes. The central effects of acyzole are comparable to those of zinc-NSAIDs. The analgesic effect of acyzole may be associated with kinin receptors inhibition, and weak antihistamine and antinociceptin effects. Acizol may also exhibit a gastroprotective effect. It was established that acyzole, to a lesser extent than the reference molecules, negatively affected the metabolism of vitamins and microelements.Conclusion. Chemoreactomic profiling of acyzole indicates prospects for its use as an anti-inflammatory drug.

Human IgE-FcεRI chip assay to screen natural products for antipruritic activity

A biochip assay provides high-throughput and multiplexed analysis of biological samples, chemicals, and natural products. Pruritus is itchiness due to several causes, such as allergy, dry skin, pregnancy, liver disease, kidney disease, and thyroid disease. Treatment of pruritus is associated with reduced immunoglobulin (IgE) and FcεRI levels in sera. Treatment of pruritus include corticosteroid creams or ointment. However, they have side effects, so we need a safer treatment using natural products. Here, we developed an assay using protein chip technology to identify natural products with antipruritic activity that inhibit IgE-FcεRI binding. Of the 28 tested natural product extracts, Corni Fructus extract inhibited human IgE-FcεRI binding and also showed anti-histamine effects in MC/9 mast cells. These results suggest that this protein biochip assay system can be used to identify promising natural product extracts for the treatment of pruritus.

Approved therapies and their effects on the main symptoms of urticaria : When symptom control of itchy wheals is not adequate-does updosing help?

International guidelines for the treatment of chronic spontaneous urticaria support the updosing of second-generation antihistamines to four times of the approved dose when adequate symptom control cannot be achieved with the standard dosage. However, this recommendation is primarily based on expert opinions, and there is alack of large, well-designed, double-blind clinical trials. Most the existing trials provide insufficient data, and due to the heterogeneity of the conducted trials on antihistamine effects (definition of control, design, quality, lack of an active comparator, no placebo arm, small sample size, outcomes) and their short duration, comparative analysis is challenging. However, it can be concluded that the use of modern second-generation antihistamines is both effective and safe based on the available data and our own long-term experiences in the specialized outpatient clinic of auniversity dermatology department, even though increased dosages (up to fourfold as per the current international guidelines) may be necessary for symptom control. Another therapeutic option for refractory symptoms in chronic spontaneous urticaria is subcutaneous administration of omalizumab at adosage of 300 mg at 4‑week intervals as avery safe and effective treatment.

Molecular docking of bioactive compounds extracted and purified from selected medicinal plant species against covid-19 proteins and in vitro evaluation

Bioactive compounds are secondary metabolites of plants. They offer diverse pharmacological properties. Peganum harmala is reported to have pharmaceutical effects like insecticidal, antitumor, curing malaria, anti-spasmodic, vasorelaxant, antihistaminic effect. Rosa brunonii has medicinal importance in its flower and fruits effective against different diseases and juice of leaf is reported to be applied externally to cure wounds and cuts. Dryopteris ramosa aqueous leaf extract is used to treat stomach ulcers and stomachaches. Each of these three medicinal plants have been indicated to have anticancer, antiviral, antioxidant, cytotoxic and antifungal effects but efficacy of their bioactive compounds remained unexplored. Study was aimed to explore In-vitro and In-silico anticancer, antiviral, antioxidant, cytotoxic and antifungal effects of bioactive compounds of above three medicinal plants. DPPH and ABTS assay were applied for assessment of antioxidant properties of compounds. Antibacterial properties of compounds were checked by agar well diffusion method. Brine shrimp lethality assay was performed to check cytotoxic effect of compounds. Molecular docking was conducted to investigate the binding efficacy between isolated compounds and targeted proteins. The compound isomangiferrin and tiliroside presented strong antioxidant potential 78.32% (± 0.213) and 77.77% (± 0.211) respectively in DPPH assay while harmaline showed 80.71% (± 0.072) at 200 µg/mL in ABTS assay. The compound harmine, harmaline and PH-HM 17 exhibited highest zone of inhibition 22 mm, 23 mm, 22 mm respectively against Xanthomonas while Irriflophenone-3-C-β- D-glucopyranoside showed maximum zone of inhibition 34 mm against E. coli. The compound isomangiferrin and vasicine contained strong antibacterial activity 32 mm and 22 mm respectively against S. aureus. The compound mangiferrin, astragalin, tiliroside, quercitin-3-O-rhamnoside showed maximum inhibitory zone 32 mm, 26 mm, 24 mm and 22 mm respectively against Klebsiella pneumoniae. Highest cytotoxic effect was observed by compound tiliroside i.e. 95% with LD50 value 73.59 µg/mL. The compound tiliroside showed the best binding mode of interaction to all targeted proteins presenting maximum hydrophobic interactions and hydrogen bonds. The binding affinity of tiliroside was − 17.9, − 14.9, − 14.6, − 13.8, − 12.8 against different proteins 6VAR, 5C5S, IEA3, 2XV7 and 6LUS respectively. Bioactive compounds are significant natural antioxidants, which could help to prevent the progression of various diseases caused by free radicals. Based on molecular docking we have concluded that phytochemicals can have better anticancer and antiviral potential.

Antihistaminic, Antiarthritic, and Antiobesity Activities of Yellow Horn Poppy Natural Products

Background: Yellow horn poppy ( Glaucium flavum, syn. Chelidonium flavum) in the family Papaveraceae, is growing in many geographical areas; it is mostly native to Northern Africa, Western Asia, and Europe. The plant is well known for its different types of alkaloids, including aporphines, protopines, and phenolic compounds. In Eastern Europe, the HCl and HBr salts of glaucine (the common active constituent in G. flavum) have been approved as cough suppressants, in addition to several therapeutic applications in traditional medicine. The natural products of G. flavum varied according to the geographical habitat, the stage of maturity, and the selected plant organ. Materials and Methods: For the first time, the extraction and isolation of natural products (alkaloids and flavonoids) from dried aerial parts of the Libyan population of yellow horn poppy and testing their biological effects, which include antihistaminic, antiarthritic, and antiobesity effects. Results: Alkaloids (glaucine and isoboldine) and flavonoid constituents (quercetin-7- O-rutinoside and rutin) have been isolated, while the biological activity results showed that quercetin-7- O-rutinoside and rutin showed half-maximal inhibitory concentration (IC50) (µg) = 29.7 and 46.6, 26.2 and 61.3, and 58.8 and 50.1 for antihistaminic, antiarthritic, and antiobesity, respectively, compared with those of glaucine and isoboldine effects, IC50 = 77.4 and 159.3, 61.7 and 118.7, and 237.8 and 157.6, respectively. Conclusion: According to the obtained results, the antihistaminic, antiarthritic, and antiobesity effects of the flavonoid compounds were stronger than those of the alkaloidal constituents of yellow horn poppy.