scholarly journals Effect of UVA1 on hypertrophic scarring in the rabbit ear model

2020 ◽  
Vol 40 (1) ◽  
Author(s):  
Tong Zhang ◽  
Zhiming Shen ◽  
Jie Zheng ◽  
Rui Jiang
Keyword(s):  
New Zealand ◽  
Rabbit Model ◽  
Tissue Growth ◽  
Control Group ◽  
High Dose ◽  
Hypertrophic Scarring ◽  
Dermal Thickness ◽  
New Zealand White Rabbits ◽  
Uva1 Phototherapy ◽  
The Impact

Abstract Hypertrophic scars (HTSs) are common and cause functional and psychological morbidity. UVA1 (340–400 nm) phototherapy has been previously shown to be effective in the treatment of localized scleroderma, systemic sclerosis, and POEMS syndrome with minimal side effects, all of which are presented as collagen fibrils hyperplasia that is common with scarring in skin histology. In the present study, we aimed to investigate the impact of UVA1 on the protein expression of TGF-β signal pathway and myofibroblasts in a rabbit model of cutaneous scarring. Full-thickness skin wounds (2 cm × 5 cm in diameter) were made in New Zealand white rabbits to establish the hypertrophic scarring model. New Zealand white rabbits were divided into two treatment groups (n=30 wounds per group with an equal number of controls): medium-dose of UVA1 phototherapy group: 60 J/cm2; high-dose of UVA1 phototherapy group: 110 J/cm2. Left ears were used for treatment and the right ones were used for control. Treatment was administered five times weekly for 6 weeks. Treated and untreated control wounds were harvested at various time points and examined by histologic examination, immunohistochemical assessment, and ultrastructural evaluation. The results showed that UVA1 phototherapy caused a significant reduction in dermal thickness by histological features, whereas the scar index was descended significantly in both medium- and high-dose UVA1 groups compared with the control group. Examination of immunohistochemistry also revealed a marked suppression of tissue growth factor-β (TGF-β) (both medium- and high-dose), α smooth muscle actin (α-SMA) (only high-dose), and tissue inhibitor of metalloproteinase 1 (TIMP-1) (only high-dose), and apparent increase in matrix metalloproteinases (MMP-1) (both medium- and high-dose) compared with the control. The ultrastructural evaluation showed the collagen fibers’ diameter had shrunk, and that fibroblastic cytoplasm was not affluent and in a quiescent stage. These findings of the present study suggested that administration of UVA1 irradiation is effective to improve the experimental HTS model and raises a possibility of the therapeutic approach of UVA1 in the scar. Although not directly examined in the present study, MMP inhibition is hypothesized to be responsible for this effect. However, early UVA1 treatment could not prevent the formation of scar model.

scholarly journals A metabolic profiling analysis of degenerative intervertebral disc disease in a rabbit model via GC/TOF-MS

2019 ◽  
Author(s):  
Xiaolin Wu ◽  
Hongfei Xiang ◽  
Guoqing Zhang ◽  
Yougu Hu ◽  
yan wang ◽  
...  
Keyword(s):  
New Zealand ◽  
Intervertebral Disc ◽  
Disc Degeneration ◽  
Intervertebral Disc Degeneration ◽  
Rabbit Model ◽  
Intervertebral Discs ◽  
Control Group ◽  
Model Group ◽  
New Zealand White Rabbits ◽  
Tof Ms

Abstract Background: To establish an analytical method for studying intervertebral disc metabolomics based on gas chromatography/time-of-flight mass spectrometry (GC/TOF-MS). Methods: To establish a rabbit model of intervertebral disc degeneration, the intervertebral discs of six New Zealand white rabbits were punctured. GC/TOF-MS was applied to analyze degenerated discs of the six model group animals and six similar New Zealand white rabbits considered as the control group. Pattern recognition and nonparametric test analyses were utilized to evaluate the data as well as screen for and identify significant biomarkers. Metabolites and metabolic pathways relevant to associated pathological processes were studied. Results: We established a rabbit model of intervertebral disc degeneration and an orthogonal partial least squares-discriminant analysis (OPLS-DA) disease-distinguishing model of intervertebral disc degeneration for contrast against the typical physiological state of intervertebral discs. Expression of six metabolites in degenerated and normal intervertebral discs of New Zealand white rabbits was evaluated. Levels of four metabolites expressed in the model group were significantly higher than in the control group, while two other metabolites were expressed at significantly lower levels in the model group as compared to the control group. Conclusions: This paper demonstrates that metabolic profiling of both degenerated and normal intervertebral rabbit discs is a feasible method of metabolomic analysis. Via in-depth filtering of characteristic metabolites, we found a high correlation between metabolic variations and intervertebral disc degeneration. Further studies on endogenous metabolites and pathways involved in intervertebral disc degeneration will provide a better understanding of associated molecular mechanisms and lay foundations for effective clinical treatment.

scholarly journals Efficacy of Dietary Supplementation with Capsicum Annum L on Performance, Hematology, Blood Biochemistry and Hepatic Antioxidant Status of Growing Rabbits

Animals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2045
Author(s):  
Hamada Elwan ◽  
Mostafa Abdelhakeam ◽  
Sally El-Shafei ◽  
Atef Abd El-Rahman ◽  
Zienhom Ismail ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
New Zealand ◽  
Dietary Supplementation ◽  
Basal Diet ◽  
Control Group ◽  
Spectrometric Analysis ◽  
Hot Pepper ◽  
Wide Range ◽  
New Zealand White Rabbits ◽  
Physiological And Biochemical

Animals fed with a high amount of a wide range of antioxidants in their diet are significantly protected against oxidative stress. Powerful antioxidant substances such as vitamin E, vitamin C, and carotenoids are present naturally in red-hot pepper (RHP). This study hypothesized that using RHP may provide protection against oxidative stress and enhance animal physiological responses. Thus, this study aimed to investigate the effect of feeding New Zealand white rabbits with RHP-supplemented diets on their physiological and biochemical responses. New Zealand White rabbits (age = 6 weeks, n = 48) were split equally into three groups (n = 16 in each group). One group was fed a basal diet only (control group), with the other two groups fed a basal diet along with 1 and 2% RHP. Mass spectrometric analysis for the RHP methanolic extract showed some phenolic compounds, such as p-coumaric, sinapinic acids, vanillic, and luteolin, as well as catechin and its isomers. Hepatic antioxidant enzymes (SOD, GSH, GSH-Px, and CAT) were significantly elevated (p < 0.05) by feeding rabbits diets supplemented with 1 or 2% RHP. The addition of RHP significantly enhanced immune-responses; phagocytic activity, chemotaxis, TIg, IgG, IgM, and IgA increased when growing rabbits were fed RHP compared with the control group. In conclusion, dietary supplementation of 1 or 2% RHP may play a role as an enhancer of growth and immune response in growing rabbits.

Effects of a Curriculum-Integrated Dance Program on Children’s Physical Activity

2020 ◽  
Vol 17 (11) ◽  
pp. 1179-1183
Author(s):  
Geeta Sharma ◽  
Tom Stewart ◽  
Scott Duncan
Keyword(s):  
Physical Activity ◽  
New Zealand ◽  
Control Group ◽  
Control Groups ◽  
Intervention Effects ◽  
Future Studies ◽  
School Time ◽  
And Control ◽  
The Impact ◽  
Children’S Physical Activity

Background: Curriculum-integrated dance programs are a promising but relatively under-researched strategy for increasing children’s physical activity (PA). The aim of this study was to determine the impact of a curriculum-integrated dance program on children’s PA. Methods: A total of 134 primary children aged 7–9 years from 4 New Zealand schools were assigned to either a dance group (n = 78) or a control group (n = 56). The dance group participated in a 6-week curriculum-integrated dance program during school time. Although the dance program focused on curricular learning, fitness and coordination were embedded in the dance sessions. Intensity of PA varied according to the focus of each dance session. PA was measured at baseline and postintervention using a waist-mounted ActiGraph GT3X+ accelerometer for 8 consecutive days. Results: There were no significant intervention effects on PA levels between the dance and control groups postintervention. Conclusion: Dance-embedded learning did not increase overall levels of PA in this study. Future studies may consider assessing longer term effects of a dance-based intervention, or programs that place more focus on PA promotion.

Serum Free Light Chain (FLC) Measurement in Multiple Myeloma (MM) Patients (pts) Correlate with Known Monoclonal Paraprotein, Disease Stage and Therapy Response.

Blood ◽  
2004 ◽  
Vol 104 (11) ◽  
pp. 4907-4907 ◽  
Author(s):  
Monika Engelhardt ◽  
Daniel Räpple ◽  
Andreas Weis ◽  
Emanuel Bisse ◽  
Gabriele Ihorst
Keyword(s):  
Early Detection ◽  
Therapy Response ◽  
Clinical History ◽  
Serum Levels ◽  
Disease Stage ◽  
Control Group ◽  
High Dose ◽  
Normal Range ◽  
Monitoring Therapy ◽  
The Impact

Abstract So far, data based on small patient (pt) population suggest that the measurement of serum FLC from MM pts undergoing high-dose chemotherapy (HDCT) with stem cell transplantation (SCT) may be a sensitive marker for monitoring therapy success and for early detection of relapse. For further evaluation of the impact of FLCs on the assessment of treatment efficacy of standard- (ST) and HDCT with SCT, we performed a prospective analysis on serial serum specimens from 86 MM and 9 control pts. Measurement of FLC concentration was performed with the commercially available Freelite™ kit (Binding Site). For statistical analysis, pts’ clinical history, age at diagnosis, sex, current state of disease, karyotype and serum parameters, such as ß2-microglobulin, calcium levels and serum creatinine were evaluated. In the control group (NHL=6, AML=1, non-hematological disease=2), median concentrations of kappa(k)- and lambda(l)- FLC were 9.8 mg/l and 12.8 mg/l, respectively, corresponding to reference intervals for healthy individuals with normal kappa(k)/lambda(l)-ratios. In MM, 40 (46.5%) pts displayed kappa(k)-FLC levels above the upper range of 19mg/l, 26 (30%) had lambda(l)-FLC levels above the upper range of 26 mg/l and 9 pts (10.4%) had both elevated kappa(k)- and lambda(l)-FLC serum levels. An abnormal kappa(k)/lambda(l)-ratio was observed in 45 (52,3%) MM pts. Pts with a known kappa(k)-paraprotein (n=58) had a median FLC kappa(k)-concentration of 38 mg/l, but lambda(l)-FLC within the normal range. For pts with a known lambda(l)-paraprotein (n=27), reciprocal findings (76.4 mg/l for lambda(l)- vs kappa(k)-FLC in the normal range) were observed. Pts with responsive disease (CR, PR and SD) had both kappa(k)- and lambda(l)- FLC levels within the normal range, whereas newly diagnosed pts (ED) and those with PD had kappa(k)- FLC levels approx. 3-times the normal range, with lambda(l)- FLC levels at the upper limit of normal. Pts receiving ST as compared with HDCT had higher FLC levels. This is also observed in pts with amyloidosis, renal impairment or PD. Our results suggest that serum FLC assay allows monitoring of the therapy response and early detection of relapse. Determination of FLCs is also important, when evaluating new therapeutic substances, and for detection of prognostic patterns for better risk-based stratification of treatment.

scholarly journals BAG S53P4 putty as bone graft substitute – a rabbit model

2017 ◽  
Vol 3 (1) ◽  
Author(s):  
Ilkka Saarenpää ◽  
Patricia Stoor ◽  
Janek Frantzén
Keyword(s):  
Bone Formation ◽  
Bone Regeneration ◽  
Proximal Tibia ◽  
Rabbit Model ◽  
Bone Graft Substitute ◽  
Control Group ◽  
The Novel ◽  
Bone Augmentation ◽  
New Bone Formation ◽  
New Zealand White Rabbits

AbstractBioactive glass (BAG) S53P4 granules represent a bone augmentation biomaterial for the surgical treatment of bony defects, even in challenging conditions such as osteomyelitis. The aim of this eight-week rabbit implantation study was to evaluate the biocompatibility and bone regeneration performance of a BAG S53P4 putty formulation following its implantation into the proximal tibia bone of twenty-eight New Zealand white rabbits. BAG S53P4 putty was compared to BAG S53P4 granules (0.5-0.8 mm) to evaluate whether the synthetic putty binder influences the bone regeneration of the osteostimulative granules. The putty formulation facilitates clinical use because of its mouldability, injectability and ease of mixing with autograft. Implantation of putty and granules into proximal tibia defects resulted in good osseointegration of the two groups. Both biomaterials were biocompatible, showed high new bone formation, high vascularization and periosteal growth. No signs of disturbed bone formation were observed due to the PEG-glycerol binder in the BAG S53P4 putty. Instead, intramedullary ossification and stromal cell reaction were more advanced in the putty group compared to the control group (p = 0.001 and p < 0.001). In conclusion, the novel mouldable BAG S53P4 putty showed reliable bone regeneration in bony defects without adverse tissue or cell reactions.

scholarly journals Model of a critical size defect in the New Zealand White rabbit’s tibia

2016 ◽  
Vol 15 (1) ◽  
Author(s):  
Che Nor Zarida Che Seman ◽  
Zamzuri Zakaria ◽  
Mohamed Azril Mohamed Amin ◽  
Mohd Shukrimi Awang ◽  
Nazri Mohd Yusof ◽  
...  
Keyword(s):  
New Zealand ◽  
Critical Size ◽  
Zealand White Rabbit ◽  
Control Group ◽  
Critical Size Defect ◽  
New Zealand White Rabbit ◽  
Surgical Suture ◽  
Study Results ◽  
Rabbit Tibia ◽  
New Zealand White Rabbits

Introduction: Critical size defects (CSD) in the long bones of New Zealand White rabbit (Oryctolagus cuniculus) have been used for years as an experimental model for investigation of the effectiveness of a new bone substitute materials. There are varieties of protocols available in the literature. This technical note attempts to present an alternative surgical technique of a CSD in the New Zealand white rabbit tibia. Methods: Thirty-nine New Zealand White rabbits were used in this study. A CSD of approximately 4.5 mm (width) X 9.0 mm (length) was surgically drilled at the proximal tibial metaphysis, approximately 1 cm from the knee joint. The surrounding of soft tissue was repositioned and sutured layer by layer with bio absorbable surgical suture. Povidone soaked gauze and bandage were used as a dressing. There is no control group used in this study. Results: This alternative method created good CSD with less bleeding from the muscle observed. No mortality on other surgical complications were observed within 6 weeks, 12 weeks and 24 weeks following surgery. Conclusions: A simple and safe method for performing critical size defect was demonstrated and recommended as an approach for surgery on New Zealand White rabbits.

scholarly journals An effect of single high dose of vitamin D3 on the risk of nosocomial infections, hospitalization time and mortality in hospitalized elderly population. A preliminary report

2020 ◽  
Vol 2 (2) ◽  
pp. 1-5
Author(s):  
Dorota Leszczyńska ◽  
Agata Tuszyńska ◽  
Magdalena Zgliczyńska ◽  
Wojciech Zgliczyński ◽  
Waldemar Misiorowski
Keyword(s):  
Clostridium Difficile ◽  
Clostridium Difficile Infection ◽  
Vitamin D3 ◽  
Nosocomial Infections ◽  
Control Group ◽  
High Dose ◽  
Single High Dose ◽  
Hospital Acquired Infections ◽  
Hospital Acquired ◽  
The Impact

Introduction: Observational studies indicate a significant impact of serum 25(OH)D concentration on incidence of hospital-acquired infections. However, we did not find any interventional study assessing the effect of vitamin D3 administration at the admission on the course of further hospitalization in internal medicine departments. Objective of the paper: Investigation of the impact of one-time high-dose vitamin D3 administration in elderly patients on the day of urgent admission to the hospital, on hospital-acquired infections. Materials and methods: A randomized, two-arms, open pilot study in 97 adults aged 60-100. A study group was given a single dose of 60,000 IU vitamin D3 and a control group was not subject to any intervention. Serum 25(OH)D and calcium were measured at the baseline and after 7 days. Results: 77.32% of studied patients were vitamin deficient, and among those, in 28.87% severe vitamin D deficiency was found. After single administration of 60,000 IU of vitamin D3, only 4 patients achieved recommended serum 25(OH)D concentration. The highest increase in serum 25(OH)D was observed in patients with severe deficiency. Numbers of observed nosocomial infections such as flu, hospital-acquired pneumonia or Klebsiella pneumoniae MBL+ infection did not differ significantly between study and control group, however there was a trend close to significance for lower incidence of Clostridium difficile infection in the vitamin D3 group. Conclusions: Preliminary results of the presented research indicate possible protective effect of single high dose of vitamin D3 against Clostridium difficile infection during hospitalization. Further research on larger group of patients, using higher dose of vitamin D3 is necessary.

scholarly journals Evaluation of anti-ulcer activity of 4-hydrooxy benzalydehide against NSAIDs induced ulcers in rats

2021 ◽  
Vol 9 (5) ◽  
pp. 1412
Author(s):  
Rupali V. Jadhav ◽  
V. K. Redasani ◽  
Shankar B. Kalbhare ◽  
Karishma Yadav ◽  
Aryan Langeh ◽  
...  
Keyword(s):  
Low Dose ◽  
Positive Control ◽  
Gastric Volume ◽  
Control Group ◽  
High Dose ◽  
Antiulcer Activity ◽  
Ulcer Index ◽  
Pylorus Ligation ◽  
The Impact ◽  
Intermediate Dose

Background: The aim of this study was to evaluate antiulcer activity of 4-hydroxybenzaldehyde against NSAIDs induced ulcer in rats based differences in its morphology, distance with other external landmarks and also to sigmoid and transverse sinuses.Methods: The antiulcer activity of 4-HBD was evaluated using pylorus ligation-aspirin induced ulcer method. Animals of this models were treated with 4-HBD (50mg/kg, 100mg/kg and 150mg/kg).Results: It has been observed that 4-HBD at low dose (50mg/kg), intermediate dose (100mg/kg) and high dose (150mg/kg) showed significant increase in pH, significant decrease in gastric volume, significant decrease in ulcer index and significant decrease in total acidity.Conclusions: The impact of 4-HBD therapy with intermediate (100mg/kg, p.o.) dose was observed to be similar with the positive control group.  

scholarly journals Effects of monosodium glutamate on testicular structural and functional alterations induced by quinine therapy in rat: An experimental study

2021 ◽  
Author(s):  
Davoud Kianifard ◽  
Seyyed Maysam Mousavi Shoar ◽  
Morteza Fallah Karkan ◽  
Ahmed Aly
Keyword(s):  
Reproductive System ◽  
Monosodium Glutamate ◽  
Serum Testosterone ◽  
Testicular Tissue ◽  
Male Reproductive System ◽  
Control Group ◽  
High Dose ◽  
Sperm Analysis ◽  
High Doses ◽  
The Impact

Background: Quinine (QU) as an anti-malarial drug induces alterations in testicular tissue. Toxic effects of monosodium glutamate (MSG) on the male reproductive system have been recognized. Objective: To investigate the impact of MSG administration on the intensity of gonadotoxicity of QU. Materials and Methods: Sixty eight-wk old Wistar rats weighing 180-200 gr were divided into six groups (n = 10/each): the first group as a control; the second and third groups received low and high doses of MSG (2 & 4 gr/kg i.p.), respectively, for 28 days; the fourth group received QU for seven days (25 mg/kg); and in the fifth and sixth groups, QU was gavaged following the MSG administration (MSG + QU) from day 22 to day 28. Serum testosterone and malondialdehyde (MDA) levels were measured. Testes samples were prepared for tissue MDA levels, histomorphometry, and immunohistochemistry of p53. Sperm analysis was performed on cauda epididymis. Results: Serum and tissue MDA levels were increased in treated groups compared to the control group. This increment was higher in the MSG + QU groups. The testosterone levels were reduced significantly (p < 0.0001) in all treated groups. In addition, histomorphometric indices and tubular epithelium population were reduced significantly (p < 0.0001) in QU, MSG + QU, and consequently in high-dose MSG, QU, MSG + QU groups. All spermatogenic indices were reduced in the treated groups, particularly in the MSG + QU groups. Sperm motility and viability indices were reduced significantly (p = 0.003) in the MSG + QU groups. Finally, the overexpression of p53 was observed in the MSG + QU groups. Conclusion: The administration of MSG before and during QU therapy may intensify testicular tissue alterations. Key words: Male reproductive system, Monosodium glutamate, Quinine hydrochloride, Rat.

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