Effect of Photofunctionalization with 6 W or 85 W UVC on the Degree of Wettability of RBM Titanium in Relation to the Irradiation Time

Photoactivation with ultraviolet C light can reverse the effects derived from biological ageing by restoring a hydrophilic surface. Ten titanium discs were randomly divided into three groups: a control group, a 6 W group, and an 85 W group. A drop of double-distilled, deionized, and sterile 10 µL water was applied to each of the discs. Each disc was immediately photographed in a standardized and perpendicular manner. Measurements were taken based on the irradiation time (15, 30, 60, and 120 min). UVC irradiation improved the control values in both groups. There was no difference in its effect between the 6 W group and the other groups during the first 30 min. However, after 60 min and up to 120 min, 85 W had a significantly stronger effect. The contact angles with the 85 W ultraviolet light source at 60 and 120 min were 19.43° and 31.41°, respectively, whereas the contact angles for the 6 W UVC source were 73.8° and 61.45°. Power proved to be the most important factor, and the best hydrophilicity result was obtained with a power of 85 W for 60 min at a wavelength of 254 nm.

Download Full-text

Ultraviolet A and Ultraviolet C Light-Induced Reduction of Surface Hydrocarbons on Titanium Implants

European Journal of Dentistry ◽

10.1055/s-0039-1688741 ◽

2019 ◽

Vol 13 (01) ◽

pp. 114-118 ◽

Cited By ~ 2

Author(s):

Zaheer Naauman ◽

Zainul Ahmad Bin Rajion ◽

Shahbaz Maliha ◽

Pauzi Hariy ◽

Q. Saeed Muhammad ◽

...

Keyword(s):

Photoelectron Spectroscopy ◽

Titanium Implant ◽

Treated Group ◽

Atomic Ratio ◽

Titanium Implants ◽

Control Group ◽

Uva Irradiation ◽

Peak Intensity ◽

Ultraviolet C ◽

Group A

Abstract Objective The carbon, titanium, and oxygen levels on titanium implant surfaces with or without ultraviolet (UV) pretreatment were evaluated at different wavelengths through X-ray photoelectron spectroscopy (XPS). Materials and Methods This interventional experimental study was conducted on nine Dio UFII implants with hybrid sandblasted and acid-etched (SLA) surface treatments, divided equally into three groups. Control group A samples were not given UV irradiation, while groups B and C samples were given UVA (382 nm, 25 mWcm2) and UVC (260 nm, 15 mWcm2) irradiation, respectively. The atomic ratio of carbon, titanium, and oxygen was compared through XPS. Results Mean carbon-to-titanium ratio and C1 peaks considerably increased in Group A compared to those in experimental Groups B and C. The intensity of Ti2p and O1s peaks was more pronounced for group C compared to that for groups A and B. Conclusions Although the decrease in surface hydrocarbons was the same in both UV-treated groups, the peak intensity of oxygen increased in the UVC-treated group. Thus, it can be concluded that compared with UVA irradiation, UVC irradiation has the potential to induce more hydrophilicity on SLA-coated implants.

Download Full-text

Differential Acquisition, Extinction, and Reinstatement of Conditioned Suppression in Mice

Quarterly Journal of Experimental Psychology ◽

10.1080/17470210701515785 ◽

2007 ◽

Vol 60 (10) ◽

pp. 1313-1320 ◽

Cited By ~ 8

Author(s):

Trinette Dirikx ◽

Tom Beckers ◽

Clara Muyls ◽

Paul Eelen ◽

Debora Vansteenwegen ◽

...

Keyword(s):

Conditioned Stimulus ◽

Unconditioned Stimulus ◽

Conditioned Suppression ◽

Conditioned Fear ◽

The Other ◽

Control Group ◽

Selective Suppression ◽

Differential Acquisition ◽

Group A ◽

Conditioned Responding

In animals, the reappearance of conditioned fear responses after extinction has been primarily investigated using single-cue conditioning paradigms. However, a differential paradigm can overcome several of the disadvantages associated with a single-cue procedure. In the present study, the reinstatement phenomenon was assessed in mice using a differential conditioned suppression paradigm. In a first phase, one conditioned stimulus (CS +) was consistently paired with an unconditioned stimulus (US; footshock) while another CS (CS–) was not, resulting in selective suppression of previously trained instrumental behaviour during the CS +. After the extinction phase, half of the animals (reinstatement group) were presented with unsignalled USs, while the other half were not (control group). A differential return of conditioned responding was observed in the reinstatement group, but not in the control group. The implications of these findings for future conditioning research are discussed.

Download Full-text

Effects of Vanadium Inhalation and Sweetened Beverage Ingestion in Mice: Morphological and Biochemical Changes in the Liver

International Journal of Toxicology ◽

10.1177/10915818211030858 ◽

2021 ◽

pp. 109158182110308

Author(s):

María Eugenia Cervantes-Valencia ◽

Adriana González-Villalva ◽

Gumaro Cano-Gutiérrez ◽

Juan Carlos Albarrán-Alonso ◽

Teresa Imelda Fortoul

Keyword(s):

Oxidative Stress ◽

Sucrose Solution ◽

Liver Function Tests ◽

Biochemical Changes ◽

The Other ◽

Control Group ◽

Sweetened Beverage ◽

Sweetened Beverages ◽

Group 4 ◽

Group A

The aim of this report was to evaluate the morphological and biochemical changes in the liver by the inhalation of vanadium and consumption of sweetened beverages in a subchronic murine model. Forty CD-1 male mice were randomly divided into four groups: control, vanadium (V), sucrose 30% (S), and vanadium–sucrose (V + S). V was inhaled (1.4 mg/m3) for 1h, twice/week; 30% sucrose solution was given orally ad libitum. Blood samples were obtained for AST, ALT, and LDH determination. Liver samples were processed for histological and oxidative stress immunohistochemical evaluation with 4-hydroxynonenal at weeks 4 and 8 of exposure. Regarding liver function tests, a statistically significant increase ( P < 0.05) was observed in groups V, S, and V + S at weeks 4 and 8 compared to the control group. A greater number of hepatocytes with meganuclei and binuclei were observed in V and V + S at week 8 compared to the other groups. Steatosis and regenerative changes were more extensive in the eighth week V + S group. 4-Hydroxynonenal immunoreactivity increased in the V + S group at both exposure times compared to the other groups; however, the increment was more evident in the V + S group at week 4 compared to the V + S group at week 8. An increase in De Ritis ratio (>1) was noticed in experimental groups at weeks 4 and 8. Findings demonstrate that in the liver, V, S, and V + S induced oxidative stress and regenerative changes that increased with the length of exposure. Results support possible potentiation of liver damage in areas with high air pollution and high-sweetened beverage consumption.

Download Full-text

Daily Intake of Probiotics with High IFN-γ/IL-10 Ratio Increases the Cytotoxicity of Human Natural Killer Cells: A Personalized Probiotic Approach

Journal of Immunology Research ◽

10.1155/2014/721505 ◽

2014 ◽

Vol 2014 ◽

pp. 1-7

Author(s):

Yu-Hsuan Ho ◽

Yu-Chiu Lu ◽

Hung-Cheng Chang ◽

Shin-Yi Lee ◽

Min-Fen Tsai ◽

...

Keyword(s):

Daily Intake ◽

The Other ◽

Control Group ◽

Nk Activity ◽

Effective Agent ◽

Human Natural Killer Cells ◽

Group A ◽

Ifn Γ ◽

Nk Cytotoxicity ◽

And Control

A personalized probiotic microfluidic chip system has been established and used to screen the probiotics which had the highest value of IFN-γ/IL-10 or IL-10/IFN-γamong six probiotics, includingL. paracaseiBRAP01,L. acidophilusAD300,B. longumBA100,E. faeciumBR0085,L. rhamnosusAD500, andL. reuteriBR101. One hundred volunteers were included and their PBMCs were collected and stimulated by the six probiotics. People who belonged to the IFN-γgroup took the probiotics that exerted the highest ratio of IFN-γ/IL-10 and vice versa in IL-10 group. A significant increase in NK cytotoxicity of 69 volunteers in the IFN-γgroup was observed compared to the IL-10 group (n=21) and control group (n=10). The result also showed thatL. paracaseiBRAP01 andL. acidophilusAD300 were the two dominant inducers in IFN-γgroup which yielded higher value of IFN-γ/IL-10 than the other 4 probiotics, whileL. reuteriBR101 was the most effective agent on the ratio of IL-10/IFN-γin the IL-10 group. Our finding highlighted the concept of personalized probiotics and also provided a good foundation to investigate the probiotics with NK activity.

Download Full-text

Evaluation of hematological findings in children with Down syndrome

International Journal of Contemporary Pediatrics ◽

10.18203/2349-3291.ijcp20183506 ◽

2018 ◽

Vol 5 (5) ◽

pp. 1724

Author(s):

Hakan Sarbay

Keyword(s):

Down Syndrome ◽

Acute Leukemia ◽

Myelodysplastic Syndrome ◽

The Other ◽

Control Group ◽

Healthy Children ◽

Hematological Disorders ◽

Children With Down Syndrome ◽

Significant Difference ◽

Group A

Background: Various hematological disorders and malignancies may be encountered with Down syndrome. In this article, hematological findings of children with Down syndrome were investigated.Methods: The hematological results of 106 Down syndrome children aged 3 months to 17 years were assessed retrospectively. The results were compared with a patient group consisting of non-DS and healthy children with a similar age range.Results: When compared with the control group, a significant difference was found between the frequencies of neutropenia, monocytosis, macrocytosis and anisocytosis. No significant difference was detected between the patients with macrocytosis and those without macrocytosis when the relation of macrocytosis with other hematological disorders was examined. On the other hand, the comparison between the groups with and without macrocytosis showed that the prevalence of acute leukemia was significantly higher in patients with Down syndrome.Conclusions: DS children with macrocytosis should be more closely monitored for myelodysplastic syndrome and acute leukemia.

Download Full-text

Association of Nasal Polyposis with Bronchial Asthma

Bangladesh Journal of Otorhinolaryngology ◽

10.3329/bjo.v23i1.45106 ◽

2020 ◽

Vol 23 (1) ◽

pp. 11-18

Author(s):

Md Anamul Haque ◽

Md Kamrul Hasan Tarafder ◽

ABM Luthful Kabir ◽

Mohammad Harun Or Rashid ◽

Dhiman Pramanik ◽

...

Keyword(s):

Bronchial Asthma ◽

Eosinophil Count ◽

Nasal Polyposis ◽

The Other ◽

Control Group ◽

Case Group ◽

College Hospital ◽

Other Hand ◽

Group A ◽

Group B

Objective: To find out association between Nasal polyposis and bronchial asthma. Methods: This was a cross sectional study which was carried out in the departments of Otolaryngology and Head-Neck surgery of Bangabondhu Sheikh Mujib Medical University and Dhaka Medical College Hospital during the period of February 2014 to July 2014. A Total 230 patients were selected according to selection criteria among which 30 subjects had nasal polyposis (designated as group A or cases) and 200 subjects had no nasal polyposis (designated as group B or control group). Results: In group (A), asthma was found in 30.0% cases. On the other hand, asthma was found in 2.5% of control group (B). The association of nasal polyposis with bronchial asthma was highly significant (p<.05). In both group 40.0% patients were within the 38-47 year’s age group. In case group, 80.0% patients had any sorts of allergic history on the other hand, only 15.0% patients had allergic history in control group. High eosinophil count was found 66.7% patients suffering from nasal polyposis with bronchial asthma and in comparison to patients suffering from nasal polyposis without bronchial asthma had high eosinophil count 42.85%. In group A High IgE level was found 66.7% patients suffering from nasal polyposis with bronchial asthma, on the other hand, 42.85% had IgE level among patients suffering from nasal polyposis without bronchial asthma. Conclusion: Patients with nasal polyposis and asthma are significantly associated. Both serum IgE and total circulating eosinophil count are significant associated with nasal polyposis and bronchial asthma. Bangladesh J Otorhinolaryngol; April 2017; 23(1): 11-18

Download Full-text

Effects of discriminate and indiscriminate use of enrofloxcin on hematological parameters

GSC Advanced Research and Reviews ◽

10.30574/gscarr.2021.7.1.0064 ◽

2021 ◽

Vol 7 (1) ◽

pp. 09-015

Author(s):

Md. Mominul Islam Bhuiyan ◽

Md. Shafiqul Islam ◽

Md. Rakibul Hasan ◽

Kazi Rafiqul Isla

Keyword(s):

Packed Cell Volume ◽

Hematological Parameters ◽

The Other ◽

Control Group ◽

Blood Parameter ◽

Withdrawal Period ◽

Significant Difference ◽

Group A ◽

Group B ◽

Control Group Group

Hematological indication is an important finding for pathophysiology analysis of biological science. This study was designed with the aim to investigate the effects of residual antibiotics on hematological parameters of broiler following discriminate and indiscriminate use. 18 broiler DOC (Cobb-500) were reared up to 31 days. On day 16, they were randomly divided into 3 groups, namely Group–A (Control group), Group-B (Discriminate group) and Group-C (Indiscriminate group). Each group contains 6 birds. The discriminate and indiscriminate group was treated with antibiotic, enrofloxacin. In Group-B withdrawal period was followed and treatment was stopped before 7 days of sacrifice. On the other hand, withdrawal period was not maintained in indiscriminate group and the antibiotic treatment was continued until the day of sacrifice. The Total erythrocyte count (million/mm3) of control, discriminate, and indiscriminate groups were 3.15±0.047, 2.66±0.091, and 2.90±0.11 respectively. The Hb (gm%) of control, discriminate, and indiscriminate groups were 8.17±0.07, 7.37±0.09, and 7.28±0.07 respectively. The Packed Cell Volume (%) of control, discriminate, and indiscriminate group were 24.17±0.48, 23.17±0.48, and 22.33±0.67 respectively. There was no significant difference on blood parameter found among the groups. Therefore, discriminate and indiscriminate use of enrofloxacin has no bad effect on hematological parameters of broiler.

Download Full-text

Effects of peroral supplementation of different forms of zinc on the ruminal mucosa of goat kids – a morphometric study

Acta Veterinaria Brno ◽

10.2754/avb201382040399 ◽

2013 ◽

Vol 82 (4) ◽

pp. 399-403 ◽

Cited By ~ 5

Author(s):

Julius Černík ◽

Leoš Pavlata ◽

Alena Pechová ◽

Ľubica Mišurová ◽

Olga Jokverová ◽

...

Keyword(s):

Zinc Supplementation ◽

Experimental Period ◽

The Other ◽

Morphometric Study ◽

Control Group ◽

Group A ◽

Group B ◽

Group D

The aim of the study was to identify the effect of supplementation of various forms of zinc on the ruminal mucosa and dimensions of ruminal papillae in 6-month-old goat kids. The experimental period lasted from weaning to slaughter (4 months). All 20 kids divided into four groups of five animals, were fed with the same feeding dose, which was different only in the quantity and form of zinc. Control group was without additional zinc supplementation (group A), the other groups were supplemented with zinc in the form of ZnO (group B), zinc in the form of chelate (group C) and zinc in the form of lactate (group D). Samples for histopathological and morphometric examination were collected after the slaughter of all animals from the bottom of saccus ruminis ventralis everytime from the same place. Significant differences were reported within the comparison of the length of ruminal papillae between groups B and C (P = 0.026) and B and D (P = 0.040), within the comparison of the width of ruminal papillae between groups A and D (P = 0.020) and within the comparison of the intensity of keratinisation of the mucosa of ruminal papillae between groups A and B (P = 0.034), A and C (P = 0.038) and A and D (P = 0.001). Histopathological and morphometric examination of ruminal mucosa indicated that the ruminal papillae of kids supplemented with zinc in the form of ZnO (group B) were better developed compared to the other groups. This result indicates better utilisation of the supplemented zinc in the form of ZnO.

Download Full-text

The Effectiveness of Computer Assisted Instruction in Modifying the Alternative Perception of Geometry Concepts among 7th Grade Students in Jordan

Journal of Educational and Psychological Studies [JEPS] ◽

10.24200/jeps.vol8iss2pp258-271 ◽

2014 ◽

Vol 8 (2) ◽

pp. 258

Author(s):

Ahmed M. Al Duwair ◽

Abdelsalam M. Adili

Keyword(s):

The Other ◽

Computer Assisted Instruction ◽

Control Group ◽

Computer Assisted ◽

Reliable Test ◽

Geometric Concepts ◽

Group A ◽

Assisted Instruction ◽

Academic Year ◽

Experimental Group

This study aimed at investigating the effectiveness of computer assisted instruction in modifying alternative perception of geometry concepts among 7th grade students in Jordan. The subjects of the study consisted of (72) students from Mafraq during the second semester of the academic year 2010/2011, They were already distributed into two groups (36) who were considered as experimental group while the other (36) were considered as the control group. A valid and reliable test to probe the alternative perception in geometric concepts was distributed on the two groups twice, before the treatment and at the end of the experiment. The study revealed the following findings. There were eleven alternative perceptions of geometric concepts among the students; also there were statistical significant differences between the average of the experimental group and the control group in the alternative perception test to the benefit of experimental group students. Furthermore, the percentage of alternative perception of geometry concepts were decreased due to the computer assisted instruction.

Download Full-text

Pengaruh Iradiasi Ultraviolet terhadap Multiplikasi Tunas Aksiler dan Kadar Klorofil Anyelir (Dianthus caryophyllus L.)

Buletin Plasma Nutfah ◽

10.21082/blpn.v21n1.2015.p39-46 ◽

2016 ◽

Vol 21 (1) ◽

pp. 39

Author(s):

Higa Afza ◽

NFN Iriawati

Keyword(s):

Ultraviolet Light ◽

Ultraviolet Irradiation ◽

Irradiation Time ◽

Dianthus Caryophyllus ◽

Variation Method ◽

Axillary Shoot ◽

X Rays ◽

Culture Techniques ◽

Murashige Skoog ◽

Ultraviolet C

Ultraviolet (UV) is one of the lights spectrum that causes plant cell to damage. The use of ultraviolet irradiation in combination with tissue culture techniques has not been widely used in somaclonal variation method for carnation breeding, whereas the source of ultraviolet irradiation is more easily obtained compared to other sources of irradiation such as gamma rays, x-rays and neutron rays. The purpose of this study was to determine effect of ultraviolet irradiation on the multiplication of axillary shoot in carnation. Explants of internode stem of carnation were grown in multiplication medium Murashige Skoog (MS) consisted of 10-7 M NAA and 5.10-6 M BAP. After four times subculture, the culture bottles were exposed to ultraviolet light C with some variation of irradiation time in combination with storage in light or dark. The results showed that ultraviolet light can reduce the number of shoots formed, shoot length and chlorophyll content of carnation. Based on the results obtained, ultraviolet radiation affected the organs of plants that were formed, but did not cause meristem activity to a standstil. AbstrakSinar ultraviolet (UV) merupakan salah satu sinar gelombang pendek yang dapat menyebabkan kerusakan sel tumbuhan. Penggunaan iradiasi ultraviolet yang dikombinasikan dengan teknik kultur jaringan belum banyak digunakan untuk menginduksi keragaman somaklonal dalam pemuliaan anyelir. Padahal sumber iradiasi ultraviolet lebih mudah diperoleh dibanding dengan sumber iradiasi lain, seperti sinar gamma, sinar x, dan sinar neutron. Tujuan penelitian ini ialah mengamati pengaruh iradiasi ultraviolet terhadap multiplikasi tunas aksiler anyelir. Eksplan buku batang anyelir ditanam pada medium multiplikasi, terdiri atas medium Murashige Skoog (MS) ditambah dengan 10-7 M NAA dan 5.10-6 M BAP. Setelah dilakukan empat kali subkultur, botol kultur dipaparkan pada lampu ultraviolet C dengan beberapa variasi lama waktu penyinaran yang dikombinasikan dengan penyimpanan di tempat terang atau gelap. Sinar ultraviolet ternyata dapat menurunkan panjang ruas, jumlah tunas aksiler yang terbentuk dan kadar klorofil anyelir. Hasil penelitian menunjukkan bahwa iradiasi ultraviolet berpengaruh terhadap organ tanaman yang sudah terbentuk, tetapi tidak menghentikan aktivitas jaringan meristem.

Download Full-text