scholarly journals Preparation and Assessment of Antimicrobial Property of Resin Based Composites Impregnated with Proanthocyanidin and Titanium Dioxide

2021 ◽  
Vol 30 (04) ◽  
pp. 243-249
Author(s):  
Mumtaz ul Islam ◽  
◽  
Sardar Muhammad ◽  
Fazal Ghani

OBJECTIVE: To synthesize three experimental resin based composites (RBCs) out of a commercial preperation (Control) by impregnating into each a fixed weight (0.01%) of titanium dioxide (TiO2) and three different weight % (0.01, 0.02 and 0.03) of proanthocyanidin (PA) and to compare antibacterial property, from the zones of inhibition of streptococcus mutans (S. mutans), of the specimen restorations made in the experimental and control RBCs. METHODOLOGY: In the first phase, Streptococcus mutans were isolated and identified from the oral cavity of patients and identified on the basis of morphogenic appearance of colonies and confirmed through catalase test and microscopic examination. Isolates were then incubated and cultured for sensitivity. Specimens for control and experimental RBCs were made through a metallic mold having 2mm thickness and 5mm diameter for all the 4 groups. Specimen restorations made in the commercial as supplied RBC acted as the control (Group A). Specimen restorations in the Group B, C, and D were made in each of the experimental RBCs modified with 0.01% proanthocyanidin (PA) and 0.01% titanium dioxide (TiO2), 0.02% PA and 0.01% TiO2 and 0.03% PA and 0.01% TiO2. The antimicrobial property of all the specimen restorations in all the groups was evaluated by Bauer-Kirby (Disc Diffusion) method through the formation of zones of inhibition of S. mutans colonies on blood agar plates. Data were computed using SPSS version 21 for descriptive statistics and analyzed using one-way ANOVA with p value 0.05 taken as significant. RESULTS: The range of the zone of inhibition for specimen RBC restorations (N= 12) containing PA and TiO2 was 0.00 for Group A, 10-12mm for Group B, 12-14mm for Group C and 9-10mm for Group D. The mean inhibition zone for the experimental restoration specimens was 11±2mm for Group B, 12.7±1mm for Group C and 9.7±1mm for Group D compared to no inhibition zones (0.00 mm) with the control RBC Group A. The order of the inhibition zones from maximum to minimum was Group C > Group B > Group D > Group A. The differences between the mean values for the control and the experimental RBC restoration specimens were significant (p < 0.000). The specimen restorations in the Group D appeared under cured and could impact on their mechanical properties. CONCLUSION: Irrespective of the mentioned concentrations, impregnating PA and TiO2 rendered the RBC antimicrobial. RBC restorations made with the experimental RBC with 0.02% PA and 0.01% TiO2 proved relatively more effective in terms of antimicrobial effect. KEY WORDS: dental materials, resin based dental restorations, antibacterial resin based composite, proanthocyanidin, titanium dioxide.

2020 ◽  
Author(s):  
Obeagu Emmanuel Ifeanyi

The hematological features of Gongronema latifolium, aqueous leaves extract was evaluated using standard methods. After 10 days of consecutive infusions into 9 experimental animals (rabbits). The rabbits were monitored and the following parameters determined; hemoglobin (HB), PCV, Platelet, WBC, Differential White Blood Cell. The Rabbits were grouped into 4, one consisting of control (group A), group B was fed with 0.5 mg/kg, group C with 1.0 mg/kg, and Group D with 1.5mg/kg of the aqueous extract of Gongronemalatifolium. The mean values obtained for hemoglobin estimation for the control group is 5.9 ± 4.1 g/dl, 9.1 ± 2.9 g/dl for group B 10.2 ± 1.8 g/dl for group C and 12.8 ± 0.1 g/dl for group D with no significant increase on the PCV estimation, the mean value for the control (group A) is 17.7 ± 12.3%, 27.3 ± 8.7% for group B, group C (30.6 ± 5.4%) and D (28.4 ± 0.3) show increase that statistically significant (p > 0.01). the platelet counts of group C (600 ± 0 x 109/L) and D(600 ± 0 x 109/L) show significant increase (p > 0.01) when compared with the control (600 ± 00). But the platelet value of group B (550 ± 50 x 109/L) shows no difference. No significant changes were observed in the White Blood Counts of the test groups B (3.5 ± 0.5 x 109/L), C (1.9 + 2.1 x 109/L) and D(3.6 ± 0.4) when compared with the control group (2.9 ± 1.9). The values obtained from the differential White Blood Counts (Neutrophils, Lymphocytes, Eosinophils and Monocytes) were not significant. Therefore, Gongronemalatifolium, when properly taken as a nutritional diet, causes beneficial changes on hemoglobin, packed cell volumes and platelet counts of consumers.


2014 ◽  
Vol 42 (4) ◽  
Author(s):  
Maria Angelica Zoppi ◽  
Ambra Iuculano ◽  
Giovanni Monni

AbstractWe investigated the umbilical vein volume flow (UVVF) at 11–14 weeks in monochorionic-diamniotic (MCDA) twins, focusing on the occurrence of complications. We considered 87 MCDA pregnancies. We used “E-flow” to detect the umbilical vein and measured the mean velocities and diameters of veins, also calculating the UVVF. Pregnancies were divided into four groups: a (twin-to-twin transfusion, TTTS); b (selective intrauterine growth restriction, sIUGR); c (discordance of fluid, DF); and d (with “normal” outcome). The main outcome of the study was the assessment of the difference of UVVF between twin 1 and twin 2 (larger and smaller twin). In eight of eight pairs of group a and seven of seven pairs of group b, the UVVF of fetuses 1 were significantly different than fetuses 2 (P<0.05). The UVVFs of fetuses 2 of group a were significantly lower in respect to the UVVFs of fetuses 2 of group d (P<0.05). We provide evidence of an important difference in UVVF in pairs that successively developed TTTS or sIUGR. The smaller fetuses of group a (TTTS) showed a lower venous return than fetuses 2 of group d (normal). First-trimester UVVF is lower in fetuses with a smaller crown-rump length in twin pairs at risk of TTTS or IUGR.


2020 ◽  
Author(s):  
Ben Xu ◽  
Yi-ji Peng ◽  
Guo-Zhong Ma ◽  
Qian Zhang

Abstract Background: To introduce a novel “three-port” trocar placement technique for laparoscopic radical prostatectomy (LRP) in prostate cancer (PCa) patients.Methods: We retrospectively reviewed 300 patients with PCa who received surgical treatment between November 2010 and June 2015 at our institution. They were divided into group A: three-port LRP, group B: conventional four-five port LRP, group C: open RP (ORP) and group D: robotic-assisted RP (RARP). A learning curve was analyzed by dividing patients of group A into the early and late stages.Results: All groups were comparable with regard to the preoperative characteristics except for the relatively smaller prostate volume in group A. The three-port LRP operations were performed successfully with only 8 cases conversion to the conventional LRP. None of any severe complications or conversion to ORP occurred. In group A, the mean operative time (OT) duration was 113.8min, the mean estimated blood loss (EBL) was 94.2ml, the mean drainage days was 4.0d, the mean hospitalization was 5.1d, and 27.8% of the prostate specimen margins (PSM) were positive. The differences of OT, EBL, drainage days, hospitalization and transfusion in group A were statistically significant among the majority of the other groups (p<0.05). After undergoing the early stages of a learning curve analysis in three-port LRP, the EBL was obviously decreased.Conclusions: Three-port LRP is a novel technique that exhibits superior intraoperative advantages to the conventional LRP. Due to its less OT, EBL, drainage days, hospitalization and transfusion with a shorter learning curve, it should be recommended and popularized in the clinical practice!


2013 ◽  
Vol 2 (2) ◽  
pp. 8-12
Author(s):  
Rubina Qasim ◽  
Humaira Naushaba ◽  
Md Enayet Ullah ◽  
Hasna Hena ◽  
Hosna Ara Perven

Background : Ovarian diseases and infertility are the very common health problems among the female population. Alteration in the volume of the ovary occurs throughout the reproductive life which may predispose to ovarian diseases such as cyst, polycystic ovary and ovarian carcinoma. Moreover, the reduction in ovarian volume leading to decrease the fertility of a women also. So the present study is designed to assess the volume of the ovary in Bangladeshi women in different age groups which will provide a complete and standarize the data in Bangladeshi population and also compare the data with other countries. It will provide resourcefull information which may further determine the ovarian reserve and reproductive age of female for improving the accurate diagnosis and management of ovarian diseases as well as infertility problems. Study design: Cross sectional and analytical type of study. Materials: The present study was performed on 65 cadaveric ovaries of both side in Bangladeshi female age ranging from 5 years to 65 years. Methods: The samples were divided into four different age groups. They were group A or prepubertal group (5-12years), group B or reproductive group (13-45 years), group C or perimenopausal group (46-51years) and group D or postmenopausal group (52-65years). Results: The mean (±SD) volumes were 2.84 + 0.22 milliliter and 2.83±0.24 milliliter in group A, 8.64 + 0.89 milliliter and 8.61± 0.89 milliliter in group B, 6.85 + 0.79 milliliter and 6.84±0.76 milliliter in group C and 2.62 + 0. 52 milliliter and 2.61± 0.50 milliliter in group D in the right & left ovaries respectively. The highest mean volume was observed in group B and lowest mean volume was in group D in both ovaries. Statistically highly significant difference (P<0.001) were found when group A was compared with group B & C, group B was compared with group C & D and group C was compared with group D. But when group A was compared with group D, it was not significant (P<0.50).The mean difference in volumes of right and left ovary between group A, group B, group C and group D were statistically not significant. Conclusion: In this study, volume of the ovary does not vary in between right and left ovary in any age group. DOI: http://dx.doi.org/10.3329/updcj.v2i2.15482 Update Dent. Coll. j: 2012; 2 (2): 08-12


2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Shan Chen ◽  
Yu-Tong Jin ◽  
Zheng-Yang Zhu ◽  
Ling-Tao Wu ◽  
Ping Yang ◽  
...  

Objective. To investigate the site of action of sinapine thiocyanate (ST), following acupoint herbal patching (AHP). Methods. Twenty Wistar rats were randomized into five groups (groups A, B, C, D, and E), and all groups received the same AHP in vivo. Skin samples were excised at 2 h, 4 h, 6 h, 10 h, and 26 h after AHP administration from group A to group E separately and the concentrations of ST in the skin were determined using a liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS) method. A pharmacokinetic profile of ST following AHP was performed at the same time in a group of five Wistar rats to detect plasma levels at the same time intervals. Results. The mean ± SD ST concentrations (ng/ml) at 2 h (group A), 4 h (group B), 6 h (group C), 10 h (group D), and 26 h (group E) after AHP administration were 250.01±61.99, 61.01±30.41, 40.12±26.94, 78.66±59.43, and 19.55±18.95, respectively. No ST was detected in rats’ plasma samples at the same time points. Conclusions. The site of action of ST following AHP is in the skin.


Mediscope ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 1-6
Author(s):  
Dilruba Siddiqua ◽  
Abu Sadat Mohammad Nurunnabi ◽  
Fatema Johora ◽  
Hasna Hena ◽  
Sunjida Shahriah ◽  
...  

Background: The human adrenal gland shows a distinct proportion of two histological zones, named the cortex and the medulla, from outer inwards, in its histological appearance with differences in its cellular components and functions. Objective: The present study aims to see the variation in the proportion of the cortex and the medulla of the adrenal glands with age in a Bangladeshi population. Methods: A cross-sectional, descriptive study was done in the Department of Anatomy, Dhaka Medical College, Dhaka, from July 2008 to June 2009, based on collection of 140 postmortem human adrenal glands from 70 unclaimed dead bodies, in the Department of Forensic Medicine, Dhaka Medical College, Dhaka. The samples were divided into four age-groups including A (11-20 years), B (21-30 years), C (31-40 years) & D (41-60 years). Histological slides were prepared by using routine haematoxylin and eosin stain (H & E). Five best prepared slides from each group were examined under light compound microscope with low magnification. The thickness of adrenal cortex and medulla were measured by using ocular and stage micrometer and then converted into percentage volume. Results: The mean volume of the right adrenal cortex were found 83.64±3.71% in group A, 83.90±1.75% in group B, 83.74±5.78% in group C, 84.80±3.82% in group D, while the mean volume of the corresponding medulla were found 18.16±3.23% in group A, 15.70±2.71% in group B, 16.26±3.97% in group C, 16.20±4.04% in group D. The mean volume of the left adrenal cortex were found 84.64±3.49%, 84.90±1.75%, 84.20±3.40%, 85.44±2.66% in group A, B, C and D respectively, while the mean volume of the corresponding medulla were found 17.26±3.84%, 17.00±2.37%, 16.00±3.20% and 14.36±2.33% in group A, B, C and D respectively. The differences among the groups were not statistically significant. Conclusion: No difference was found in the proportion of the cortex and the medulla of adrenal gland in different age-groups. Mediscope Vol. 8, No. 1: January 2021, Page 1-6


2000 ◽  
Vol 93 (5) ◽  
pp. 766-773 ◽  
Author(s):  
Seung-Chyul Hong ◽  
Kwan-Soo Kang ◽  
Dae Won Seo ◽  
Seung Bong Hong ◽  
Munhyang Lee ◽  
...  

Object. Surgical treatment of cortical dysplasia (CD) together with intractable seizures is challenging because both visualization and localization of the lesion are difficult, correlation with seizure foci requires comprehensive study, and the surgical outcomes reported thus far are unsatisfactory. The authors report their experience in the surgical treatment of CD classified according to a surgical point of view.Methods. The definition of CD used in this study was a dysplastic lesion visible on magnetic resonance (MR) images or a lesion that, although not visible on MR images, was diagnosed as moderate-to-severe dysplasia by using pathological analysis. During the last 4.5 years, the authors treated 36 patients with intractable epilepsy accompanied by CD. They divided the 36 cases of CD into four characteristic groups: Group A, diffuse bilateral hemispheric dysplasia; Group B, diffuse lobar dysplasia; Group C, focal dysplasia; and Group D, a moderate to severe degree of CD with a normal appearance on MR images. All but one patient in Group C were monitored in the epilepsy monitoring unit by using subdural electrodes for seizure localization and functional mapping.The incidence of CD among a cohort of 291 patients who had undergone epilepsy surgery at the authors' center during the study period was 12.4%. The mean age of the 36 patients was 21.3 years and the mean age at seizure onset was 8.5 years. The mean follow-up period was 26 months. Twenty-six patients (72.2%) belonged to Engel Class I or II (20 and six, respectively). There were five cases in Group A, nine in Group B, nine in Group C, and 13 in Group D. Patients in Groups A and B were significantly younger at seizure onset and had significantly poorer surgical outcomes compared with patients in Groups C and D (p < 0.05). If outcome is compared on the basis of the extent of removal of CD, patients in whom CD was completely removed had significantly better outcomes than those in whom CD was only partially removed (p < 0.001).Conclusions. The authors conclude that intractable epilepsy accompanied by CD can be treated surgically using comprehensive preoperative approaches. Deliberate resective procedures aimed at complete removal of dysplastic tissue ensure excellent seizure control without permanent neurological deficit.


2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
E Schroeder ◽  
B Bihin ◽  
M Buche ◽  
P.H Eucher ◽  
J Felix ◽  
...  

Abstract   To assess the long-term outcome of patients with an enlarged ascending thoracic aorta (ATA), a retrospective study was performed. Methods Inclusion criteria: ATA diameter of 38 mm or more by ETT (813 consecutive cases). Inclusion period: 1.1.2003–31.12.2016. Results At baseline, the mean diameter of the ATA was 42±3 mm, the mean Z-score was 2.7±0.8. In the subgroup of patients with 2 ETT examinations (and no surgical cure of the ATA), the mean diameter was 41.9±4.8 mm, the mean Z-score 2.4±1.1 after a mean follow-up of 6 years. During the follow-up, 52 patients had an intervention on the ATA, 26 patients were operated within the first 3 months after the diagnostic echocardiogram. 26 patients were operated during FU. In the 791 remaining patients (without early intervention), the event rate (death, intervention on the ATA) were assessed by the competing risk model. In the group of patients with a baseline ATA diameter of less than 41 mm (Group A: n=254), the cumulative incidence of death at 5 and 10 y was 34% and 61%; in the group of patients with an ATA diameter of 41–42 mm (Group B: n=238) the incidence was 34% and 61% respectively, in the group of patients with an ATA diameter of 43–44 mm (Group C: n=147), the incidence was 32% and 58%, in the group of patients with a diameter of 45 and more (Group D: n=150), the incidence was 31.1% and 61% (NS). The cumulative incidence of surgical interventions on the ATA at 5 and 10 years was 0.4% and 1% in group A, 1.3 and 1.8% in group B, 0.7 and 1.4% in group C and 9.8 and 12.9% in group D (p&lt;0.05). Similar results were observed in patients according to the Z-scores. In the group of patients (221) with a Z-score &gt;3, the incidence of intervention at 5 and 10 y was respectively 7.6% and 10.7% (p=0.01). Conclusions – The mean diameter of the enlarged ATA remained nearly unchanged over a period of 6 years. – No impact of the enlarged ATA on survival was observed. – Only patients with an ATA diameter of 45 mm and more (or a Z-score of 3 and more) needed an intervention on the ATA at a rate of ± 10% at 10 y after the initial echocardiographic diagnosis. Funding Acknowledgement Type of funding source: None


2013 ◽  
Vol 12 (3) ◽  
pp. 282-285
Author(s):  
Dilruba Siddiqua ◽  
Abu Sadat Mohammad Nurunnabi ◽  
Shamim Ara ◽  
Fatema Zohora ◽  
Hasna Hena ◽  
...  

Objective: A Cross-sectional descriptive type of study was done in the Department of Anatomy, Dhaka Medical College, Dhaka, from July 2008 to June 2009, to see the variation in the volume of the adrenal glands with age in Bangladeshi people. Materials & Methods: The study was performed on 140 post mortem human adrenal glands collected from 70 unclaimed dead bodies which were in the morgue under examination in the Department of Forensic Medicine, Dhaka Medical College, Dhaka. The samples were divided into four age-groups including group A (11-20 years), group B (21-30 years), group C (31-40 years) & group D (41-60 years). The length, breadth and thickness of each adrenal gland were measured by using a slide calipers. Then the volume of each adrenal gland was determined by the product of its length, breadth and thickness multiplied by 0.52, according to the prolate ellipsoid formula. Results: The mean volume of the right adrenal glands were found 6.36±0.85 cm3 in group A (11-20 years), 6.49±0.76 cm3 in group B (21-30 years), 6.50±0.80 cm3 in group C (31-40 years), 6.76±0.79 cm3 in group D (41-60 years). The mean volume of the left adrenal glands were found 6.97±1.02 cm3 in group A (11-20 years),6.93 ±0.83 cm3 in group B (21-30 years), 6.65±0.79 cm3 in group C (31- 40 years), 7.09±0.81 cm3 in group D (41-60 years). The differences between the right and left adrenal glands and the difference between age groups were not statistically significant. Bangladesh Journal of Medical Science Vol. 12 No. 03 July ’13 Page 282-285 DOI: http://dx.doi.org/10.3329/bjms.v12i3.15425


2019 ◽  
Vol 10 (1) ◽  
pp. 49-52
Author(s):  
Zubaida Umar Zehri ◽  
Shabih Zehra ◽  
Abdul Lateef Mahesar ◽  
M. Anwar ◽  
Syed Ijaz Hussain Zaidi ◽  
...  

Objective: To evaluate the hepatoprotective effects of Tecomellaundulata stem bark extract on isoniazid induced hepatic damage based on liver enzymes and Liver function test in rat models. Study design and Setting: An experimental study conducted at Department of Pharmacology at Al-Tibri Medical College and Hospital, Isra University Karachi Campus and Dow University of Health Sciences, Karachi. Methodology: Total twenty-four rats were studied. The albino rats that were male, healthy, and weighing 200-250grams were included in this study. Rats were divided into four groups, each group having six rats and treated once daily orally for 30 days. Group A was control group and treated with normal animal diet and water; Group B was Isoniazid treated group and induced by oral administration of Isoniazid (INH) 50mg/kg. Group C was treated with Isoniazid 50mg/kg and Tecomellaundulata bark extract with low dose of 200mg/kg . Group D was treated with Isoniazid 50mg/kg and Tecomellaundulata bark extract with high dose of 400mg/kg . All the animals were weighed before commencement of the study. Liver enzymes were noted after the end of experiment. P value of <0.05 was taken as significant. Results: While comparing the mean values of AST,ALT, ALP and GGT in all four groups group; the statistical significant difference (p<0.001) was found. The mean levels in of total Bilirubin in group A was 0.69 ±0.01, group B 1.04 ±0.04, in group C was 1.15 ±0.39, and in group D was 1.04 ±0.44 with the significant difference (p=0.004). Conclusion: Tecomellaundulata has a protective effect on isoniazid induced toxicity on liver as evidenced by liver function test on rat models.


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