1.Tocotrienols-rich diet decreases advanced glycosylation end-products in non-diabetic rats and improves glycemic control in streptozotocin-induced diabetic rats.
W M Wan Nazaimoon ; B A K Khalid
The Malaysian journal of pathology 2002;24(2):77-82
This study determined the effects of palm vitamin E (TRF) diet on the levels of blood glucose, glycated hemoglobin (gHb), serum advanced glycosylation end-products (AGE) and malondialdehyde (MDA) of diabetic Sprague-Dawley rats. The rats received either control (normal rat chow), TRF diet (normal chow fortified with TRF at 1 g/kg) or Vitamin C diet (vitamin E-deficient but contained vitamin C at 45 g/kg). The animals were maintained on the respective diet for 4 weeks, made diabetic with streptozotocin (STZ), then followed-up for a further 8 weeks. At week-4, mean serum AGE levels of rats given TRF diet (0.7 +/- 0.3 units/ml) were significantly lower than those of control or Vitamin C diet rats (p pounds 0.03). The levels increased after STZ and became comparable to the other groups. At week 12, blood glucose (20.9 +/- 6.9 mM) and gHb (10.0 +/- 1.6%) of rats on TRF diet remained significantly low compared to that of control or Vitamin C diet rats (p pounds 0.03). MDA however, was not affected and remained comparable between groups throughout the study. This study showed that TRF may be a useful antioxidant; effectively prevented increase in AGE in normal rats, and caused decrease in blood glucose and gHb in diabetic rats. Further studies are needed to elucidate the mechanisms of action of TRF.
Rattus norvegicus
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Diet
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Protirelin
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control
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Streptozocin
2.Development of an in-house radioimmunoassay for human growth hormone.
W M Wan Nazaimoon ; N Satgunasingam ; B Khalid
The Malaysian journal of pathology 1990;12(1):13-20
A simple and sensitive double-antibody radioimmunoassay for human growth hormone (HGH) was developed, optimised and validated. The anti-hGH sera raised in 2 rabbits were highly specific with low cross-reactions of 0.19% and 0.3% with human placental lactogen and 0.21% and 0.13% with human prolactin. The mean sensitivity of the assay determined from 28 assays was found to be 0.4 +/- 0.2 mIU/L. Mean recovery of added exogenous hGH was 98.8 +/- 6.8%. Linearity studies of samples diluted at 1:2, 1:4 and 1:8 gave values of 101.3 +/- 5.3%, 109.6 +/- 13.4% and 97.3 +/- 13% respectively of those expected. The reproducibility of the assay was good; within assay coefficient of variation for serum samples with GH concentrations of 2.7, 13.6 and 28.2 mU/l ranged from 5.1 to 8.3% while the inter-assay precision varied from 4.9 to 10.3%. The in-house assay showed good correlation (r = 0.96, p less than 0.001) with a commercial HGH RIA kit (Dainabot, Japan). A reference normal adult fasting GH level of less than 7 mIU/l was established from 95 samples assayed by this method.
Somatropin
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assay
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Radioimmunoassay
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L
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Growth hormone measurement
3.Masking of central diabetes insipidus and hypogonadotrophic hypogonadism by germ cell tumour in suprasellar--pineal region.
S H Md Isa ; M Wong ; B A K Khalid
The Medical journal of Malaysia 2006;61(5):630-2
A patient with beta hCG-secreting germ cell carcinoma of the pineal and suprasellar regions presented with hydrocephalus, Parinaud's syndrome, hypopituitarism and polyuria. Central diabetes insipidus was strongly suspected although the water deprivation test was not diagnostic. The polyuria however, responded to ADH analogue when the hypothyroidism and hypocortisolism were treated. Pubertal development was evident and serum testosterone was normal despite the low FSH/LH, suggesting hCG stimulation of Leydig cells. This case illustrates that a beta hCG-germ cell tumour of the suprasellar region causing hypopituitarism can mask the presence of central diabetes insipidus and hypogonadotrophic hypogonadism.
Germ Cells
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Hypogonadism
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Diabetes Insipidus
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MASKED
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Polyuria
4.Evaluation of efficiency of manual polishing over autoglazed and overglazed porcelain and its effect on plaque accumulation.
The Journal of Advanced Prosthodontics 2012;4(4):179-186
PURPOSE: The aim of this study was to evaluate the efficiency of manual polishing over autoglazed and overglazed porcelain and their effect on plaque accumulation. MATERIALS AND METHODS: Thirty-six porcelain discs were fabricated out of which 18 each was subjected for autoglazing and overglazing. Half surface of the discs was left intact; the remaining half was roughened with medium grit diamond bur. Roughened surfaces were repolished by porcelain polishing kits (Shofu, DFS, Eve). All the surfaces were evaluated by the perthometer and SEM. Six discs from each sample were placed in human volunteer's mouth for 72 hours to evaluate the plaque accumulation. Acquired data was subjected to ANOVA comparative evaluation. RESULTS: Roughened surfaces had average roughness value of 2.88+/-0.1935 microm. The repolished surfaces by porcelain correction kits Shofu, DFS and Eve, average roughness value reduced to 0.6250+/-0.1036, 0.9192+/-0.0953, 0.9017+/-0.1305 respectively. Autoglazed and overglazed surfaces showed the mean roughness value (Ra) of 0.4217+/-0.0685, 0.3450+/-0.0729. SEM study showed the improved surfaces when subjected for polishing. Plaque accumulation percentage was the highest on roughened surface (93.83+/-6.2552%), followed by porcelain discs polished by commercial kits. Autoglazed surfaces found to be the best surfaces with the least plaque accumulation (0.5237+/-0.4209%). CONCLUSION: All the polishing kits used in the study reduced the average roughness by approximately 77%. Corrected porcelain surfaces should ideally be reglazed, alternatively, polish the surfaces before final cementation.
Cementation
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Dental Porcelain
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Diamond
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Humans
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Mouth
6.Effect of alginate chemical disinfection on bacterial count over gypsum cast.
Satheesh B HARALUR ; Omir S AL-DOWAH ; Naif S GANA ; Abdullah AL-HYTHAM
The Journal of Advanced Prosthodontics 2012;4(2):84-88
PURPOSE: To evaluate the efficacy of sodium hypochlorite (1 : 10) and iodophor disinfectants on alginate impressions along with their effect on the survived bacterium count on the gypsum cast. MATERIALS AND METHODS: Four alginate impression on each dentate patients were made, of which Group I were not washed or disinfected, Group II impressions were merely washed with water, Group III were disinfected by spraying with sodium hypochlorite (1 : 10), Group IV were disinfected with iodophor (1 : 213). Gypsum cast (type III) were made from all the impression. Impressions and gypsum cast were swabbed in mid palatal region for bacterial culture. Bacterial colony counting done after 3 days of incubation at 37degrees C in blood agar media. The data obtained was analyzed by one way ANOVA test at a significant difference level of 0.05. RESULTS: Group I and Group II showed significantly more bacteria compared to Group III and Group IV. Bacterial colonies on the alginate impression and gypsum cast in group disinfected with Sodium hypochlorite (1 : 10) were 0.18, 0.82 respectively compared to group treated with iodophor (1 : 213). There was an increase in bacterial count on dental cast compared to source alginate impressions. CONCLUSION: Sodium hypochlorite (1 : 10) was found to be better disinfectant for alginate impression. There was an indication of increase in number of bacteria from alginate impression to making of dental cast. Additional gypsum cast disinfectant procedures need to be encouraged to completely eliminate cross infection to dental laboratory.
Agar
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Alginates
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Bacteria
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Bacterial Load
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Calcium Sulfate
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Cross Infection
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Disinfectants
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Disinfection
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Glucuronic Acid
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Hexuronic Acids
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Humans
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Infection Control
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Laboratories, Dental
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Sodium Hypochlorite
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Water
7.Characteristics of newly-formed cementum following Emdogain application.
Khalid AL-HEZAIMI ; Mansour AL-ASKAR ; Abdulaziz AL-RASHEED
International Journal of Oral Science 2011;3(1):21-26
Periodontal regenerative techniques have been proposed; however, the outcomes remain debatable. The present investigation assessed the regenerated cementum following enamel matrix derivative application in dehiscence-type defects. Buccal osseous dehiscences were surgically created on the maxillary cuspid, and the second and fourth premolars in five female beagle dogs. The treatment group (n = 15 sites) received the enamel matrix derived application, whereas the control groups (n = 15) did not. The dogs were sacrificed 4 months following treatment and the specimens were histologically and histometrically examined. The newly formed cementum was uneven in thickness and mineralization, overlapped the old cementum and exhibited functional orientation, cementocyte lacunae and collagen fibril bundles. Most of the histological specimens showed the presence of a gap between the newly formed cementum and the underlying dentin. Control sites did not exhibit any cementum formation. The present study concluded that newly formed cementum is of cellular type and exhibits multiple characteristics.
Animals
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Cementogenesis
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drug effects
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Dental Cementum
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cytology
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drug effects
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surgery
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Dental Enamel Proteins
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pharmacology
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Dogs
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Female
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Random Allocation
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Regeneration
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drug effects
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Surgical Wound Dehiscence
8.Novel Piperine compound AB05 (N-5-(3,4-dimethoxyphenyl) -2E,4E pentadienylpiperidine) inhibits H1N1 influenza virus propagation in vitro
Mohammed, A. ; Velu, A.B. ; Al-Hakami, A.M. ; Meenakshisundaram, B. ; Esther, P. ; Abdelwahid, S.A. ; Irfan, A. ; Prasanna, R. ; Anantharam, D. ; Harish, C.C.
Tropical Biomedicine 2020;37(No.4):1062-1073
Pandemic H1N1 influenza virus respiratory illness has become an inevitable global
health concern. With antigenic drift, it becomes necessary to have drugs over tailor-made
HIN1 vaccine every year. In the current study, we screened many Piperine derivative in
which, N-5-(3,4-dimethoxyphenyl)-2E,4E-pentadienylpiperidine (AB05) and was further studied
for anti-H1N1influenza virus activity and compared with other stains in-vitro on MDCK cell
line. Initial cytotoxic doses of AB05 for the MDCK cell line were > 25µM. The results showed
a dose-dependent reduction of the viral plaque’s in the adsorption assay with EC50 of 0.33 µM.
The mechanism of AB05 was by inhibition of matured viral release as evaluated by the time
of virus addition with incubation of 6-10 hours. With the promising H1N1 virucidal activity of
AB05, we included various strains of human influenza virus to screen AB05 inhibition of
Neuraminidase (NA). The result showed 70% NA inhibition in WSN (H1N1), 90% in H3N2 &
Influenza B and 49% in Tamiflu resistant H1N1). Further our In silco docking studies
substantiated experimental results by showing the difference in binding and cooperation
between H1N1 and N3N2. Together these observations illustrate that Piperine derivative
AB05 is a promising lead molecule which needs further evaluation in animal models.
9.The management of perioperative pain in craniosynostosis repair: a systematic literature review of the current practices and guidelines for the future
Hatan MORTADA ; Raghad ALKHASHAN ; Nawaf ALHINDI ; Haifa B. ALWAILY ; Ghada A. ALSADHAN ; Saad ALROBAIEA ; Khalid ARAB
Maxillofacial Plastic and Reconstructive Surgery 2022;44(1):33-
Background:
Craniosynostosis is a condition characterized by a premature fusion of one or more cranial sutures. The surgical repair of craniosynostosis causes significant pain for the child. A key focus of craniosynostosis repair is developing effective strategies to manage perioperative pain. This study aimed to review perioperative pain control strategies for craniosynostosis repair systematically.
Methods:
Guidelines for reporting systematic reviews and meta-analyses were used in the design of this review. In May 2022, the following databases were used to conduct the literature search: MEDLINE, Cochrane, EMBASE, and Google Scholar. A search was performed using MeSH terms “craniosynostosis,” “pain management,” and “cranioplasty.”
Results:
The literature review yielded 718 publications. After applying our inclusion criteria, 17 articles were included, accounting for a total of 893 patients. During the postoperative period, most studies used multimodal analgesia, primarily opioids, and acetaminophen. In the postoperative period, oral ibuprofen was the most commonly used NSAID, rectal codeine, and acetaminophen were the most commonly used weak opioids, and continuous remifentanil infusion was the most commonly used potent opioid.
Conclusion
The authors determined the best pain management options for pediatric patients undergoing cranioplasty by analyzing the most commonly used analgesics. A high-quality clinical trial comparing different types of analgesic combinations would be a valuable addition to the present literature.
10.Asthma-Related Outcomes in Patients Initiating Extrafine Ciclesonide or Fine-Particle Inhaled Corticosteroids.
Dirkje S POSTMA ; Richard DEKHUIJZEN ; Thys VAN DER MOLEN ; Richard J MARTIN ; Wim VAN AALDEREN ; Nicolas ROCHE ; Theresa W GUILBERT ; Elliot ISRAEL ; Daniela VAN EICKELS ; Javaria Mona KHALID ; Ron M C HERINGS ; Jetty A OVERBEEK ; Cristiana MIGLIO ; Victoria THOMAS ; Catherine HUTTON ; Elizabeth V HILLYER ; David B PRICE
Allergy, Asthma & Immunology Research 2017;9(2):116-125
PURPOSE: Extrafine-particle inhaled corticosteroids (ICS) have greater small airway deposition than standard fine-particle ICS. We sought to compare asthma-related outcomes after patients initiated extrafine-particle ciclesonide or fine-particle ICS (fluticasone propionate or non-extrafine beclomethasone). METHODS: This historical, matched cohort study included patients aged 12-60 years prescribed their first ICS as ciclesonide or fine-particle ICS. The 2 cohorts were matched 1:1 for key demographic and clinical characteristics over the baseline year. Co-primary endpoints were 1-year severe exacerbation rates, risk-domain asthma control, and overall asthma control; secondary endpoints included therapy change. RESULTS: Each cohort included 1,244 patients (median age 45 years; 65% women). Patients in the ciclesonide cohort were comparable to those in the fine-particle ICS cohort apart from higher baseline prevalence of hospitalization, gastroesophageal reflux disease, and rhinitis. Median (interquartile range) prescribed doses of ciclesonide and fine-particle ICS were 160 (160-160) µg/day and 500 (250-500) µg/day, respectively (P<0.001). During the outcome year, patients prescribed ciclesonide experienced lower severe exacerbation rates (adjusted rate ratio [95% CI], 0.69 [0.53-0.89]), and higher odds of risk-domain asthma control (adjusted odds ratio [95% CI], 1.62 [1.27-2.06]) and of overall asthma control (2.08 [1.68-2.57]) than those prescribed fine-particle ICS. The odds of therapy change were 0.70 (0.59-0.83) with ciclesonide. CONCLUSIONS: In this matched cohort analysis, we observed that initiation of ICS with ciclesonide was associated with better 1-year asthma outcomes and fewer changes to therapy, despite data suggesting more difficult-to-control asthma. The median prescribed dose of ciclesonide was one-third that of fine-particle ICS.
Adrenal Cortex Hormones*
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Anti-Asthmatic Agents
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Asthma
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Cohort Studies
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Comparative Effectiveness Research
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Diethylpropion
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Disease Progression
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Gastroesophageal Reflux
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Hospitalization
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Humans
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Odds Ratio
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Prevalence
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Rhinitis