1.Postural management of airway obstruction secondary to Pierre Robin Sequence.
Chun Yiing WONG ; Suzina Shiekh AB HAMID ; Hazama MOHAMAD ; Irfan MOHAMAD
Brunei International Medical Journal 2011;7(4):225-228
Pierre Robin Sequence commonly presents with upper airway obstruction secondary to craniofacial anomalies and can be managed with several treatment modalities. In mild cases, non-invasive postural management is a good treatment option. Prone position has been established as the posture of choice to reduce potential upper airway obstruction. We report a case of Pierre Robin Sequence with airway obstruction that did not respond to prone position but responded to supine position with slight tilting of the head.
2.Argemone mexicana extract alleviates gastrointestinal disorders by stimulating muscarinic receptors and blocking voltage-gated L-type calcium channels
Iqbal RABIA ; Hamid IRFAN ; Janbaz Hussain KHALID ; Akhtar Furqan MUHAMMAD ; Saleem AMMARA ; Sharif ALI ; Peerzada SOHAIB ; Akhtar BUSHRA ; Sohail KASHIF ; Ali SAJID
Asian Pacific Journal of Tropical Biomedicine 2021;11(5):214-221
Objective: To investigate the pharmacological potential of Argemone mexicana in treating constipation and emesis by using in vitro and in vivo models.Methods: The spasmogenic and spasmolytic effects were evaluated on isolated rabbit jejunum fragments loaded in a tissue organ bath. The response was recorded with an isotonic transducer attached with Power Lab Data Acquisition System. The laxative and antiemetic activities were assessed in BALB-c mice and poultry chicks challenged with carbamylcholine and copper sulphate stimulated emesis, respectively. Results: The total phenolic and total flavonoids contents of the extract were (267.75 ± 5.77) mg GAE/g and (73.86 ± 6.01) mg QE/g, respectively. Argemone mexicana extract exerted spasmogenic effect on isolated rabbit jejunum segments with an EC50 value of 0.016 mg/mL, which was blocked by atropine (0.3 μM). Argemone mexicana extract exerted spasmolytic effect in atropine treated jejunum fragments with an EC50 value of 2.185 mg/mL. Furthermore, Argemone mexicana extract relaxed potassium (80 mM)-induced contractions (EC50: 9.07 mg/mL), similar to a standard drug verapamil. The calcium channel blocker activity was confirmed by a rightward shift of concentration-response curve of calcium in the presence of Argemone mexicana extract (1-5 mg/mL) and verapamil (0.1-1 μM). In addition, the extract increased the distance travelled by a charcoal in the gastrointestinal tract and exhibited antiemetic effect on copper sulphate induced emesis in chicks. Conclusions: Argemone mexicana shows cholinergic agonist and calcium channel blocker activities, as well as antiemetic effect. It may be used as a potential agent for treating gastrointestinal disorders.
3. Anti-obesity effect and UHPLC-QTOF-MS/MS based metabolite profiling of Solanum nigrum leaf extract
Zain AABIDEEN ; Muhammad MUMTAZ ; Muhammad RAZA ; Muhammad NADEEM ; Muhammad Tayyab AKHTAR ; Hamid MUKHTAR ; Ahmad IRFAN ; Ahmad IRFAN ; Syed RAZA ; Yee LING
Asian Pacific Journal of Tropical Biomedicine 2022;12(4):164-174
Objective: To evaluate the antioxidant potential and pancreatic lipase inhibitory action of optimized hydroethanolic extracts of Solanum nigrum. Methods: Optimized extraction for maximum recovery of metabolites was performed using a combination of freeze-drying and ultrasonication followed by determination of antioxidant and antiobesity properties. The ultra-high performance liquid chromatography equipped with mass spectrometry was used to analyze metabolite profiling of Solanum nigrum. Computational studies were performed using molecular docking and electrostatic potential analysis for individual compounds. The hypolipidemic potential of the most potent extract was assessed in the obese mice fed on fat rich diet. Results: The 80% hydroethanolic extract exhibited the highest extract yield, total phenolic contents, total flavonoid contents along with the strongest 2,2-diphenyl-1-picrylhydrazyl scavenging activity, total antioxidant power, and pancreatic lipase inhibitory properties. The 80% hydroethanolic extract not only regulated the lipid profile of obese mice but also restricted the weight gain in the liver, kidney, and heart. The 80% hydroethanolic extract also reduced alanine transaminase and aspartate transaminase concentrations in serum. The effects of plant extract at 300 mg/kg body weight were quite comparable with the standard drug orlistat. Conclusions: Solanum nigrum is proved as an excellent and potent source of secondary metabolites that might be responsible for obesity mitigation.
4. Argemone mexicana extract alleviates gastrointestinal disorders by stimulating muscarinic receptors and blocking voltage-gated L-type calcium channels
Rabia IQBAL ; Sohaib PEERZADA ; Sajid ALI ; Irfan HAMID ; Khalid Hussain JANBAZ ; Muhammad Furqan AKHTAR ; Ammara SALEEM ; Ali SHARIF ; Bushra AKHTAR ; Kashif SOHAIL
Asian Pacific Journal of Tropical Biomedicine 2021;11(5):214-221
Objective: To investigate the pharmacological potential of Argemone mexicana in treating constipation and emesis by using in vitro and in vivo models. Methods: The spasmogenic and spasmolytic effects were evaluated on isolated rabbit jejunum fragments loaded in a tissue organ bath. The response was recorded with an isotonic transducer attached with Power Lab Data Acquisition System. The laxative and antiemetic activities were assessed in BALB-c mice and poultry chicks challenged with carbamylcholine and copper sulphate stimulated emesis, respectively. Results: The total phenolic and total flavonoids contents of the extract were (267.75 ± 5.77) mg GAE/g and (73.86 ± 6.01) mg QE/g, respectively. Argemone mexicana extract exerted spasmogenic effect on isolated rabbit jejunum segments with an EC50 value of 0.016 mg/mL, which was blocked by atropine (0.3 μM). Argemone mexicana extract exerted spasmolytic effect in atropine treated jejunum fragments with an EC50 value of 2.185 mg/mL. Furthermore, Argemone mexicana extract relaxed potassium (80 mM)-induced contractions (EC50: 9.07 mg/mL), similar to a standard drug verapamil. The calcium channel blocker activity was confirmed by a rightward shift of concentration-response curve of calcium in the presence of Argemone mexicana extract (1-5 mg/mL) and verapamil (0.1-1 μM). In addition, the extract increased the distance travelled by a charcoal in the gastrointestinal tract and exhibited antiemetic effect on copper sulphate induced emesis in chicks. Conclusions: Argemone mexicana shows cholinergic agonist and calcium channel blocker activities, as well as antiemetic effect. It may be used as a potential agent for treating gastrointestinal disorders.