ORIGINAL_ARTICLE
Attempts and outcomes of liquisolid technology: An updated chronological compilation of innovative ideas and adjuvants in the field
It has been observed that most of the chemical entities have high lipophilicity and poor aqueous solubility, which result in poor bioavailability. In order to improve the bioavailability, the release behavior of such drugs should be improved. Although there are numerous techniques to handle solubility related issue, but they are expensive due to involvement of complicated equipments, advanced manufacturing operations that includes multiple and tedious steps. The liquisolid technology or powder solution technology is a promising technique for modifying the release characteristics of active pharmaceutical ingredients. As the liquisolid technology uses similar production processes as followed to develop a conventional tablet, but this technology to improve the release rate of poorly water soluble drugs is simple and cost effective The core concept of the technique involves, liquids such as solution/dispersion of poorly soluble drugs in a non-volatile solvent that is transformed into free flowing and desirable compression characteristics. To develop a fast-release liquisolid formulation, high amount of liquid vehicle is required while more effective tableting excipients with high liquid adsorption are needed to reduce the weight of the tablet. Simultaneously, this technology also has the capability to sustain the drug release and allow the development of sustained release formulation with desirable release kinetics. The present work deals with the chronological compilation and briefing of all the reported researches which involved the concept of underlined technology by the use of common as well as novel excipients to modify the release behavior of therapeutically active compounds.
http://pbr.mazums.ac.ir/article-1-141-en.pdf
2017-01-16
1
21
10.18869/acadpub.pbr.2.4.1
Liquisolid technology
non-volatile solvent
carrier material
coating material
dissolution enhancement
liquisolid compact
sustained release
Vijay
Sharma
1
Department of Pharmaceutics, Rajiv Academy for Pharmacy, N.H. #2, Delhi – Mathura Road, P.O. Chattikara, Mathura, Uttar Pradesh – 281001, India
AUTHOR
Kamla
Pathak
2
Department of Pharmaceutics, Pharmacy College Saifai, UPRIMS;R, Saifai, Etawah, Uttar Pradesh, India
AUTHOR
ORIGINAL_ARTICLE
Identification of BKCa channel openers by molecular field alignment and patent data-driven analysis
In this work, we present the first comprehensive molecular field analysis of patent structures on how the chemical structure of drugs impacts the biological binding. This task was formulated as searching for drug structures to reveal shared effects of substitutions across a common scaffold and the chemical features that may be responsible. We used the SureChEMBL patent database, which provides search of the patent literature using keyword-based functionality, as a query engine. The extraction of data of the BKCa channel openers and aligning them for molecular field similarity with newly designed structures did provide a probable validation method with accurate values. Therefore, in an attempt to increase the true positives, we report a procedure that functions on a multiple analyses modeled on molecular field similarity and common sub-structural search with consensus scoring and high confidence values to obtain greater accuracy during conventional virtual screening.
http://pbr.mazums.ac.ir/article-1-140-en.pdf
2017-01-15
22
29
10.18869/acadpub.pbr.2.4.22
BKCa channel
molecular field alignment
sureChEMBL
chemical curation
Yaseen
Gigani
1
School of Biosciences, Apeejay Stya University, Gurgaon, India
AUTHOR
Swati
Gupta
2
School of Pharmaceutical Sciences, Apeejay Stya University, Gurgaon, India
AUTHOR
Andrew
Lynn
3
School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi, India
AUTHOR
Kamlesh
Asotra
4
School of Biosciences, Apeejay Stya University, Gurgaon, India
AUTHOR
ORIGINAL_ARTICLE
Evaluation of prophylactic antibiotic administration in general surgery division of a teaching hospital in north of Iran
Surgical site infections are one of the most important post-surgery complications. Antimicrobial prophylaxis has been used routinely in surgeries to reduce infection incidence. However, inappropriate selection of antimicrobial agents or dosing can develop antimicrobial resistance, serious adverse reactions and prolong hospitalization. Current study aimed to examine prophylactic antibiotic prescription in surgeries in a teaching hospital in Sari, Mazandaran and evaluate level of adherence to the international guidelines. Between January 2015 to May 2015, 104 patients in general surgery ward were selected and enrolled in the study. The prophylactic antibiotics, dosage, timing and duration of administration were collected by reviewing patients’ records and compared to the existing guidelines. Prophylactic antibiotic was given to 85.5% of patients. Prescribed antibiotics were cefazolin (46.1%), metronidazole (24%), ceftriaxone (12.5%), ciprofloxacin (1.9%) and vancomycin (0.96%). Most of the patients (62.9%) received an inappropriate and delayed timing. Proper antibiotic dosage was seen in 45.2% of patients. All patients received post-operative prophylactic antibiotic. Main antibiotics include cefazolin (41.3%), metronidazole (33.7%), ceftriaxone (31.7%) and clindamycin (20.2%). Only 10 (21.9%) patients received cefazolin or vancomycin for a total duration of 48 hours or less. Surgical wound infection occurred in 17 (16.3%) patients during hospital stay. Adherence to antimicrobial prophylaxis guidelines was completely achieved in 14.4% of cases. Results of this study signified that adherence to existing guidelines was poor and the most common mistakes were over usage, inappropriate dosage and choosing of antibiotics.
http://pbr.mazums.ac.ir/article-1-142-en.pdf
2017-01-22
30
37
10.18869/acadpub.pbr.2.4.30
Antimicrobial prophylaxis
general surgery
guideline
Paniz
Yousefi
1
Student Research Committee, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
AUTHOR
Mahila
Monajati
2
Resident of Clinical Pharmacy, Pharmaceutical Research Center, Mazandaran University of Medical Sciences, Sari, Iran
AUTHOR
Ebrahim
Salehifar
3
Board certified Clinical Pharmacist, Gastrointestinal Cancer Research Center, Mazandaran University of Medical Sciences, Sari, Iran
AUTHOR
ORIGINAL_ARTICLE
In-vitro inhibitory effect of ethanolic and methanolic extract of Scrophulari astriata on Candida spp.
Candida species are the most common cause of opportunistic fungal infection worldwide. Due to increasing resistance of fungi against conventional drugs, as well as their side effects, alternative natural products have become a renewed interest. In the current study, the anti-Candida activities of Scrophularia striata extract were examined. In this experimental study, microdilution assay and well diffusion test were used to determine invitro anti-fungal effects of ethanolic and methanolic extract of Scrophulari astriata on four species of Candida including Candida albicans ATCC 1167, ATCC 1677, tropicalis, and glabrata. The results showed that 100 mg/ml methanolic extract has more anticandida activity than ethanolic extract. Diameter of inhibiting growth environment for ethanol extract was 37 mm, and MIC and MFC were 2.1 and 41.5 mm/ml. Results show that ethanolic and methanolic extract of Scrophularia striata have anti-fungal activities. Therefore results of this study suggest this extract is a promising anti-fungal agent, and future experiments will interest for performing in vivo study.
http://pbr.mazums.ac.ir/article-1-144-en.pdf
2017-01-31
38
43
10.18869/acadpub.pbr.2.4.38
Scrophulariastriata
Candida
ehanolic extract
methanolic extract
Mandana
Ahmadi
1
Research and Development Department, Sinafaravar pharmaceutical Company, Najaf abad, Isfahan, Iran
AUTHOR
Hossein
Mahdavi
2
Research and Development Department, Sinafaravar pharmaceutical Company, Najaf abad, Isfahan, Iran
AUTHOR
Mahboobeh
Madani
3
Department of Microbiology, Falavarjan Branch,Islamic Azad University, Isfahan, Iran
AUTHOR
Zohreh
Hadadi
4
Research and Development Department, Sinafaravar pharmaceutical Company, Najaf abad, Isfahan, Iran
AUTHOR
ORIGINAL_ARTICLE
Triethylenetetramine reduces some blood parameters in alloxan-induced diabetes mellitus in New Zealand white rabbit: evidence for histopathologic effects
This study aimed to assess whether the triethylenetetramine (TETA) is impressed the plasma level of homocysteine (Hcy), total sialic acid (TSA) and cardiac troponin I (cTnI) as cardiovascular diseases risk factors, cystatin c (Cys c) and glucose along with histopathologic changes in alloxan induced diabetes mellitus in rabbit. Twenty number New Zealand white rabbits were assigned for this study. After induction of diabetes mellitus, TETA was orally administrated with different doses (10, 20, 40 mg/kg/day, A, B, C groups respectively) for 6 months daily and group D (as positive control) not received TETA. In the following, above parameters, insulin and glucose were measured in the all groups. Furthermore, histopathologic evaluation was carried out for aorta, kidney and pancreas in the all ones. Amounts of plasma cTnI, Hcy, TSA, Cys c and glucose concentrations decreased significantly (P < 0.01) in group C (40 mg/kg/day) compared with group D (positive control). In respect of insulin, normalizing of insulin occurred in group C (40 mg/kg/day) compared with group D (positive control). It is worth mentioning that during increasing of TETA dose, those levels decreased. In terms of histopathology, ameliorative and restoring effect of TETA on pancreatic beta-cells, glomeruli, renal tubules and aorta was determined in this study. The results suggested that TETA administration plays substantial role in tremendous alleviation of forenamed parameters and amelioration of beta-cells, renal glomeruli and tubules. Hence, TETA in the dose 40 mg/kg/day may utilize in the part of human diabetes mellitus management including cardiovascular, renal diseases and glucose normalizing.
http://pbr.mazums.ac.ir/article-1-145-en.pdf
2017-02-05
44
51
10.18869/acadpub.pbr.2.4.44
Triethylenetetramine
diabetes mellitus
cardiovascular biomarkers
cystatin c
histopathology
Reza
Golam Mohebbi
1
Graduate of Veterinary Medicine, Islamic Azad University, Urmia Branch, Urmia, Iran
AUTHOR
Kaveh
Azimzadeh
2
Department of Clinical Sciences, Veterinary Faculty, Urmia Branch, Islamic Azad University, Urmia, Iran
AUTHOR
Amir
Amniattalab
3
Department of Pathobiology, Veterinary Faculty, Urmia Branch, Islamic Azad University, Urmia, Iran
AUTHOR
ORIGINAL_ARTICLE
Modulatory effect of Calendula officinalis on altered antioxidant status and renal parameters in diabetic rats
Calendula officinalis (Family Compositae) flowers are recognized as safe substance for food use by Food and Drug Administration. Present study was aimed to determine the modulatory effect of floral extracts of C. officinalis administrations on mean blood glucose (MBG), per cent glycosylated hemoglobin (HbA1c), lipid profile [(total cholesterol (TC), triglycerides (TG), low and high density lipoproteins (LDL, HDL)], antioxidant and renal parameters in streptozotocin (STZ) induced diabetic rats. Increased (P < 0.05) levels of MBG and HbA1c fraction indicate the induction of diabetes in rats. Enhanced (P < 0.05) TC, TG, LDL, total oxidant status (TOS), oxidative stress index (OSI), malondialdehyde (MDA) levels, and renal indices were observed in blood of diabetic rats. However, levels of HDL, protein profile, total antioxidant status (TAS), glutathione (GSH), total thiols (TTH) and activities of catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx), glutathione-s-transferase (GST) and glucose-6-phosphate dehydrogenase (G6PDH) were significantly reduced in diabetic rats. Repeated administrations of ethanolic floral extract of C. officinalis reduced the enhanced levels of MBG, HbA1c and TC while restored OSI, TTH, GSH, CAT, SOD, GST and MDA levels; it also increased activities of G6PDH and GPx in diabetic rats compared to untreated diabetic rats. Hypoglycemic, hypolipidemic, restored antioxidant level, and reduced altered renal functions by the floral extract of C. officinalis in diabetic rats. Further, the modulatory effect was better in aqueous as compared to ethanolic floral extract of C. officinalis.
http://pbr.mazums.ac.ir/article-1-149-en.pdf
2017-02-13
52
64
10.18869/acadpub.pbr.2.4.52
Calendula officinalis
malondialdehyde
hypoglycemic
antioxidant
diabetes
Pawan K
Verma
1
Division of Veterinary Pharmacology and Toxicology, Faculty of Veterinary Sciences and Animal Husbandry, SKUAST-J, R S Pura, Jammu, 181102, Jammu & Kashmir, India
AUTHOR
Rajinder
Raina
2
Division of Veterinary Pharmacology and Toxicology, Faculty of Veterinary Sciences and Animal Husbandry, SKUAST-J, R S Pura, Jammu, 181102, Jammu & Kashmir, India
AUTHOR
Mudasir
Sultana
3
Division of Veterinary Pharmacology and Toxicology, Faculty of Veterinary Sciences and Animal Husbandry, SKUAST-J, R S Pura, Jammu, 181102, Jammu & Kashmir, India
AUTHOR
Maninder
Singh
4
Division of Veterinary Public Health and Epidemiology, Faculty of Veterinary Sciences and Animal Husbandry, SKUAST-J, R S Pura, Jammu, 181102, Jammu & Kashmir, India
AUTHOR
ORIGINAL_ARTICLE
Effect of growth conditions and extraction solvents on enhancement of antimicrobial activity of the microalgae Chlorella vulgaris
Regarding increasing rate of drug resistance among microbial pathogens, a global search to find new antimicrobial agents from natural compounds with fewer side effects has been considered by many researchers worldwide. Bioactive compounds with good antimicrobial activity have been isolated from different algae and cyanobacteria. The current study was performed to determine antimicrobial potential and to characterize the effect of algal growth modes (autotrophic, heterotrophic and mixotrophic) and extraction solvents on antimicrobial activity of the microalgae Chlorella vulgaris against four bacterial and one fungal pathogens. C. vulgaris was grown under different growth conditions and the biomass was harvested. Different extracts were prepared using acetone, chloroform and ethyl acetate as extraction solvents and antimicrobial activity of the extracts was investigated against two Gram positive bacteria (Bacillus subtilis and Staphylococcus aureus), two Gram negative bacteria (Escherichia coli and Pseudomonas aeruginosa) and a fungal strain (Candida albicans) using agar well diffusion assay. In addition, Minimal Inhibitory Concentration (MIC) of the extracts were determined. Moreover, the total oil content and lipid productivity of C. vulgaris grown under different modes were determined. The heterotrophic growth resulted in stronger antimicrobial activity compared to the other growth conditions. In addition, the highest antimicrobial activity was observed for chloroform mediated extract and extraction using acetone resulted in minimum antimicrobial activity. Moreover, heterotrophic and mixotrophic growth significantly increased the total lipid content and lipid productivity compared to the autotrophic growth. C. vulgaris exhibited good antimicrobial potential and the antimicrobial efficacy could be influenced by extraction solvents and growth conditions.
http://pbr.mazums.ac.ir/article-1-152-en.pdf
2017-02-18
65
73
10.18869/acadpub.pbr.2.4.65
Antimicrobial activity
Chlorella vulgaris
chloroform extract
microalgae
growth modes
Ahmad
Mashhadinejad
1
Department of Biology, Faculty of Science, University of Guilan, Rasht, Iran
AUTHOR
Hojjatolah
Zamani
2
Department of Biology, Faculty of Science, University of Guilan, Rasht, Iran
AUTHOR
Jannat
Sarmad
3
Department of Biology, Faculty of Science, University of Guilan, Rasht, Iran
AUTHOR