scholarly journals Exploring the optimal dose of low ionizing radiation to enhance immune function: a rabbit model

2021 ◽  
Vol 49 (8) ◽  
pp. 030006052110150
Author(s):  
Yuhong Zhang ◽  
Hongyan Ren ◽  
Yifan Zheng ◽  
Qiang Yang ◽  
Miao Li ◽  
...  

Primary liver cancer is one of the most common malignant tumors in China. Currently, immunotherapy for liver cancer is a research hotspot. Experimental studies and epidemiological investigations have confirmed the antineoplastic activity of low ionizing radiation. The aim of this study was to explore the optimal dose of low ionizing radiation to enhance immune function. Twenty-five New Zealand rabbits were randomly divided into five groups (n = 5 each): experimental group 1 (25 mGy), experimental group 2 (50 mGy), experimental group 3 (75 mGy), experimental group 4 (100 mGy), and the control group (0 mGy). VX-2 tumor tissue was injected into rabbits using a high-frequency B-ultrasound probe (3.5 MHz). Rabbits were irradiated, and on day 4 after irradiation, blood was collected from each rabbit. Blood chemistry, interleukin (IL)-4, interferon (IFN)-γ, immunoglobulin (Ig)G, and IgM levels were assessed. On day 15 after irradiation, macrophage phagocytic function was assessed. The rabbits were sacrificed, and the spleen was removed and weighed to calculate its spleen index. Each parameter was highest in the experimental group 3 (75 mGy). Thus, we suspect the optimal low ionizing radiation dose to improve immune function may be 75 mGy.

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Yichi Zhang ◽  
Shuai Zhao ◽  
Han Ding ◽  
Xiaoling Song ◽  
Huijie Miao ◽  
...  

The objective of this study was to analyze the application of proportional hazard mathematical model (PHMM) in Hepatitis B Virus (HBV) infection analysis of interventional liver cancer patients treated with entecavir, so as to provide data support for clinical diagnosis and treatment. Based on the survival analysis, the treatment factor x was undertaken as an independent variable to perform linear regression. The regression model took the hazard rate function as the dependent variable to establish an exponential regression equation to construct a PHMM. 136 patients with primary liver cancer receiving interventional chemoembolization combined with the drug (entecavir) were selected as the experimental group, who were in the computer gene expression omnibus (GEO). 87 patients with primary liver cancer who underwent interventional chemoembolization therapy without antiviral treatment were taken as the control group. The PHMM was adopted for comprehensive analysis. In addition, the factors affecting the virological response to antiviral therapy were analyzed using the multiple logistic regression. The results revealed that HBV deoxyribonucleic acid (DNA) negative conversion rate, Hepatitis B e-Antigen (HBeAg) negative conversion rate, and HBeAg serological conversion rate in the experimental group were much higher than those in the control group ( P < 0.05 ). HBV DNA level and proportion of HBsAg <100 IU/mL in the experimental group were much lower than those in the control group ( P < 0.05 ). The virological breakthrough rate and incidence of adverse events at week 24 in the experimental group were greatly lower than those in the control group ( P < 0.05 ). The adverse virological response of patient was positively correlated with HBV DNA load and HBeAg status and negatively correlated with alanine aminotransferase (ALT) level ( P < 0.05 ). Therefore, entecavir can significantly inhibit HBV DNA replication in patients with liver cancer, showing high antiviral effect. High baseline HBV DNA load, positive HBeAg, and low baseline alanine aminotransferase levels were independent risk factors for adverse virology response to entecavir antiviral therapy, which provided a reference for the selection of antiviral drugs for HBV infection.


1970 ◽  
Vol 1 (2) ◽  
Author(s):  
Haibin Ding

Objective: To analyze the effects of Chinese herbal medicine combined with transcatheter arterial chemoembolization (TACE) on liver function in patients with primary hepatocellularCarcinoma (HCC). Methods: 122 patients with primary hepatocellular carcinoma admitted in our hospital from March 2014 to October 2016 were divided into experimental group and control group according to the digital table. The number of each group was the same. The patients in the control group were treated by transcatheter arterial chemoembolization. The experimental group was treated with traditional Chinese medicine on the basis of the control group. SPSS20.0 statistical software for statistical analysis of two groups of patients with short-term effect, follow-up of one year primary liver cancer recurrence rate, before and after treatment WBC count, liver function (alanine aminotransferase), alpha-fetoprotein and Karnofsky index parameters. Results: ①The total effective rate of the experimental group was significantly higher than that of the control group (P <0.05); ②The relapse rate of theexperimental group was significantly lower than that of the control group (P <0.05); ③ Before the treatment, the patients in the two groups had significantly higher recurrence rate than those in the control group (P <0.05). After treatment, the white blood cell count, liver function and alpha-fetoprotein levels in the experimental group were significantly better than those in thecontrol group (P <0.05), but no significant difference was found between the two groups (P<0.05). ④ The Karnofsky score of the experimental group was significantly higher than that of the control group (P<0.05). Conclusion: Chinese medicine combined with transcatheter arterial chemoembolization in patients with primary liver cancer in the application value is relatively high.


2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Xiujie Wang ◽  
Lin Liu ◽  
Na Ma ◽  
Xinxin Zhao

This study was to explore the application value of computed tomography (CT) images processed by intelligent algorithm denoising in the evaluation of humanized nursing in postoperative neuroendocrine hormone changes in patients with primary liver cancer (PLC). In this study, a simple-structured recursive residual coding and decoding (RRCD) algorithm was constructed on the basis of residual network, which can effectively remove artifacts and noise in CT images and can also restore image details and lesion features well. In addition, 60 postoperative patients with primary liver cancer were collected and divided into routine nursing control group (30 cases) and humanized nursing experimental group (30 cases). After a period of nursing, CT images based on intelligent algorithms were evaluated by determining the hormone content. The results showed that the focal necrosis rate (FNR) of the experimental group was 6%. The adrenocorticotropic hormone (ACTH) levels of 6 and 15 days after admission (T3 and T4) were 41.25 ± 3.81 pg/mL and 19.55 ± 1.72 pg/mL, respectively. The cortisol levels of days 6, 15, and 30 after admission (T3, T4, and T5) were 424.86 ± 16.82 nmol/L, 277.98 ± 14.36 nmol/L, and 241.53 ± 13.27 nmol/L, respectively. Estradiol levels were 53.48 ± 11.19 pg/mL, 41.64 ± 9.28 pg/mL, and 30.59 ± 8.16 pg/mL, respectively. Testosterone levels were 2.18 ± 1.14 ng/mL, 1.78 ± 1.03 ng/mL, and 1.42 ± 0.69 ng/mL, respectively. Self-Rating Anxiety Scale (SAS) scores were 40.24 ± 5.81 points, 36.55 ± 5.02 points, and 32.53 ± 4.8 points, respectively. There were 24 cases, 27 cases, 23 cases, and 21 patients who followed no smoking and drinking, taking medication on time, diet control, and self-monitoring. The scores of physical function, self-cognition, emotional function, and social function were 62.59 ± 6.82 points, 69.26 ± 8.14 points, 73.89 ± 6.35 points, and 66.88 ± 7.04 points, which were better than those of the control group in all aspects ( P < 0.05 ). In short, the humanized nursing course can enhance the compliance of the patients after the surgery, improve the quality of life, and inhibit the anxiety and depression of the patients, so it showed a positive effect on the neuroendocrine hormones and the prognosis of the patients.


Author(s):  
S. Nikolaev ◽  
L. Andreenko

In modern poultry farming the most urgent tasks are to search for and test new environmentally safe feed and economically justifi ed additives that stimulate productivity, positively aff ect the health of poultry, and consequently increase the livability of livestock and other important zootechnical traits. In order to maintain physiologically normal processes of life, metabolism and increase the level of productivity of poultry it needs mineral components and their chelated compounds. The purpose of this work was to increase the egg productivity of poultry by using the silicon-containing poly additive Nabicat in feeding young hens and laying hens. The researches have been carried out on the poultry cross Highsex Brown under the environments in CJSC “Poultry Farm “Volzhskaya” in the Sredneakhtubinsky area in the Volgograd region. In this paper, The optimal dose of the introduction of the silicon-containing poly additive Nabicat in the diets of young and laying hens of the cross Highsex Brown has been scientifi cally justifi ed and the biological value of using an organic form of silicon has been determined. The positive infl uence of the optimal dose of poly additive on growth, consumption, and digestibility, nutrient metabolism in the poultry body, as well as egg productivity and quality of the resulting egg has been revealed. Thus, the average egg productivity per 1 hen in the control group during the experiment period was 321,3 pcs., and in the 1st, 2nd and 3rd experimental groups it was 322,6 pcs., 325,8 and 325,7 pcs., which was higher than in the control group by 0,40 %, 1,40 and 1,37 %, respectively. The average egg weight in the 1st experimental group exceeded the control by 0,43 g or 0,68 %, in the 2nd experimental group by 1,16 g or 1,84 %, in the 3rd experimental group by 0,81 g or 1,28 %. The economic eff ectiveness of using the organic silicon additive in the composition of Nabicat poly additive in the feeding of laying hens has been proved. The economic eff ect due to the use of diff erent doses of the introduction of silicon-containing poly additive Nabicat in compound feed for laying hens of the 1st experimental group was 141,66 rubles, the 2nd experimental group 962,76 rubles, and the 3rd experimental group 821,89 rubles.


2021 ◽  
pp. 153537022110271
Author(s):  
Yuanyuan Jia ◽  
Liuqin Xie ◽  
Zhenglong Tang ◽  
Dongxiang Wang ◽  
Yun Hu ◽  
...  

After high fractures of the mandibular condyle, the insufficient blood supply to the condyle often leads to poor bone and cartilage repair ability and poor clinical outcome. Parathyroid hormone (PTH) can promote the bone formation and mineralization of mandibular fracture, but its effects on cartilage healing after the free reduction and internal fixation of high fractures of the mandibular condyle are unknown. In this study, a rabbit model of free reduction and internal fixation of high fractures of the mandibular condyle was established, and the effects and mechanisms of PTH on condylar cartilage healing were explored. Forty-eight specific-pathogen-free (SPF) grade rabbits were randomly divided into two groups. In the experimental group, PTH was injected subcutaneously at 20 µg/kg (PTH (1–34)) every other day, and in the control group, PTH was replaced with 1 ml saline. The healing cartilages were assessed at postoperative days 7, 14, 21, and 28. Observation of gross specimens, hematoxylin eosin staining and Safranin O/fast green staining found that every-other-day subcutaneous injection of PTH at 20 µg/kg promoted healing of condylar cartilage and subchondral osteogenesis in the fracture site. Immunohistochemistry and polymerase chain reaction showed that PTH significantly upregulated the chondrogenic genes Sox9 and Col2a1 in the cartilage fracture site within 7–21 postoperative days in the experimental group than those in the control group, while it downregulated the cartilage inflammation gene matrix metalloproteinase-13 and chondrocyte terminal differentiation gene ColX. In summary, exogenous PTH can stimulate the formation of cartilage matrix by triggering Sox9 expression at the early stage of cartilage healing, and it provides a potential therapeutic protocol for high fractures of the mandibular condyle.


2017 ◽  
Vol 45 (9) ◽  
pp. 2019-2027 ◽  
Author(s):  
Dong-Sam Suh ◽  
Jun-Keun Lee ◽  
Ji-Chul Yoo ◽  
Sang-Hun Woo ◽  
Ga-Ram Kim ◽  
...  

Background: Failure of rotator cuff healing is a common complication despite the rapid development of surgical repair techniques for the torn rotator cuff. Purpose: To verify the effect of atelocollagen on tendon-to-bone healing in the rabbit supraspinatus tendon compared with conventional cuff repair. Study Design: Controlled laboratory study. Methods: A tear of the supraspinatus tendon was created and repaired in 46 New Zealand White rabbits. They were then randomly allocated into 2 groups (23 rabbits per group; 15 for histological and 8 for biomechanical test). In the experimental group, patch-type atelocollagen was implanted between bone and tendon during repair; in the control group, the torn tendon was repaired without atelocollagen. Each opposite shoulder served as a sham (tendon was exposed only). Histological evaluation was performed at 4, 8, and 12 weeks. Biomechanical tensile strength was tested 12 weeks after surgery. Results: Histological evaluation scores of the experimental group (4.0 ± 1.0) were significantly superior to those of the control group (7.7 ± 2.7) at 12 weeks ( P = .005). The load to failure was significantly higher in the experimental group (51.4 ± 3.9 N) than in the control group (36.4 ± 5.9 N) ( P = .001). Conclusion: Histological and biomechanical studies demonstrated better results in the experimental group using atelocollagen in a rabbit model of the supraspinatus tendon tear. Clinical Relevance: Atelocollagen patch could be used in the cuff repair site to enhance healing.


Author(s):  
Yu. G. Kropyvka ◽  
V. S. Bomko ◽  
S. Y. Kropyvka

The article deals with the results of research on the economic efficiency of the use of mixed ligand complexes of Zinc, Manganese and Cobalt in the feeding rations of highlyproductive cows of Ukrainian Red-Spotted Dairy breed in the first 100 days of lactation. The research was performed on five groups (one control and four experimental) of analogous cows in the conditions of ALC “Terezyne” Bila Tserkva district of Kyiv region. The control was the optimal dose of mixed ligand complexes of Zinc, Manganese and Cobalt, which was previously established with a concentration of 1 kg of dry matter (DM) of the feed mixture (FM), mg: Zinc – 60.8; Manganese – 60.8 and Cobalt – 0.78. For the 2nd experimental group, the concentration of these trace elements was increased by 10 %, and in the 3rd, 4th and 5th experimental groups – on the contrary, the concentration of Zinc, Manganese and Cobalt in 1 kg of DM of feed mixture was reduced by 10 %, 20 and 30 %, respectively, compared with the control. The best results on milk yield of natural and basic fat content were got from cows of the 4th experimental group, where the concentration of Zinc, Manganese and Cobalt due to their mixed ligand complexes in 1 kg of DM of feed mixture was, mg: Zinc – 48.6; Manganese – 48.6; Cobalt – 0.62. The cost of products got from experimental cows ranged from UAH 12702.3 up to UAH 13783.7 and it was the highest in the 4th experimental group. It was set up that for cows of Ukrainian Red-Spotted Dairy breed in the first 100 days of lactation the most economically advantageous was the dose of mixed ligand complexes, in which the concentration of Zinc and Manganese was 48.6 mg, and Cobalt – 0.62 mg/kg DM, which allowed to obtain a profit of 14.37 % more than in the control group. Doses of mixed ligand complexes with a concentration of Zinc and Manganese – 66.9 mg; 54.7 and 42.6 mg, and Cobalt – 0.86 mg; 0.7 and 0.55 mg/kg CF gave a much lower economic effect. Additional profit in the 2nd experimental group amounted to UAH 66.8 or 1.34 %; in the 3rd – UAH 95.6 or 1.92 % and in the 5th – UAH 561.6 or 11.28 %, compared with the control group.


2011 ◽  
Vol 51 (No. 4) ◽  
pp. 157-162
Author(s):  
M. Domaćinović ◽  
Z. Steiner ◽  
Đ. Senčić ◽  
Z. Antunovic ◽  
P. Mijić

In order to reach better production and financial results of pork production different technological ways of pig fattening are researched. The purpose of this paper is to show separate results of polyenzyme application and the results of the use of heat-treated cereals in pig fattening as well as the results of their combined application. Pigs fattened on a diet with polyenzyme preparation and heat-treated cereals, either separately or combined, were characterised by an insignificantly higher growth rate and their feed intake per kilogram of weight gain was low compared to pigs fed standard mixtures (control group). In statistical terms, the relative portion of muscle tissue in pork carcass was significantly lower in experimental group 3 fed the mixture with heat-treated cereals than in the other groups. The absolute portion of muscle tissue in pork carcass was statistically more important in experimental group 2 (45.15 kg) receiving the mixture of enzyme additive and heat-treated cereals, and the least important in experimental group 3 (40.92 kg) fed heat-treated cereals. During pig fattening the income for experimental groups was higher than for the control group because of better production results. Average values covering variable expenses show the increase only in the third experimental group in the second fattening period compared to the control group, but these differences were of no statistical importance. &nbsp;


Author(s):  
Ling PANG ◽  
Yunxia WANG ◽  
Yuexin XING ◽  
Chunxia ZHAO

Background: To explore the application effects of whole course high-quality nursing on patients with liver cancer during radiotherapy. Methods: One hundred and five patients with liver cancer who received radiotherapy in Liaocheng People’s Hospital, Liaocheng, China from March 2010 to February 2012 were selected and divided into a control group (42 cases with routine nursing) and an experimental group (63 cases with whole course high-quality nursing). The two groups of patients were observed and compared in terms of clinical data and the Activity of Daily Living (ADL) score before and after nursing (1 course of treatment/6 week). The Self-Rating Anxiety Scale (SAS) and Self-Rating Depression Scale (SDS) were used to evaluate and compare the patients’ anxiety and depression before and after nursing. Adverse reactions during radiotherapy and nursing satisfactory of patients were observed and compared between the two groups. Results: After nursing, the ADL score and the nursing satisfaction in the experimental group was significantly higher than that in the control group (P<0.05). The SDS and SAS scores in the 2 groups before nursing were significantly higher than those after nursing (P<0.05). The total incidence of adverse reactions in the control group was significantly higher than that in the experimental group (P<0.05). Conclusion: Whole course high-quality nursing can improve the negative emotions, quality of life and nursing satisfaction, and reduce adverse reactions of patients with liver cancer during radiotherapy.


2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Xiaoyan Chen ◽  
Fan Zhu ◽  
Bin Wang ◽  
Yu Zhou ◽  
Hao Xiong ◽  
...  

Objective. To investigate the clinical effect of iodine-125 seed implantation combined with chemotherapy in patients with primary liver cancer and the effect on peripheral blood Th1/Th2 cells. Methods. A total of 136 patients with primary liver cancer from April 2017 to June 2018 were selected as subjects and randomly divided into the control group and observation group with 68 cases in each group. The control group was treated with chemotherapy, and the observation group was treated with iodine-125 seed implantation on the basis of the control group. After 3 months of treatment, the curative effect was investigated. Serum tumor markers, peripheral blood Th1/Th2 cells, and side effects and recurrence rate were compared between the two groups. Results. The levels of serum tumor markers in both groups at 3 months after treatment were lower than before treatment ( P < 0.05 ). Three months after treatment, the levels of tumor markers AFP, AFP-L3, and GP73 in the observation group were 14.61 ± 3.49 μg/L, 3.29 ± 0.41 ng/mL, and 51.24 ± 4.51 μg/L, respectively, which were lower than those in the control group, 32.53 ± 4.59 μg/L, 5.63 ± 0.63 ng/mL, and 71.52 ± 6.05 μg/L ( P < 0.05 ). At 3 months after treatment, the level of including interleukin-2 (IL-2) and tumor necrosis factor-α (TNF-α) in Th1 cells of the observation group was higher than that of the control group ( P < 0.05 ), whereas the levels of IL-4, IL-6, and IL-10 in Th2 cells were lower than those in the control group ( P < 0.05 ). There was no statistical significance in the incidence of leukopenia, thrombocytopenia, and gastrointestinal reactions between the two groups ( P > 0.05 ). The recurrence rate of the observation group at 12, 24, and 36 months after treatment was lower than that of the control group ( P < 0.05 ). Conclusion. Iodine-125 seed implantation combined with chemotherapy in patients with primary liver cancer can reduce the level of serum tumor markers, improve the level of peripheral blood Th1/Th2 cells, and reduce the recurrence rate of patients without increasing the incidence of side effects, which is worthy of promoting the application of iodine-125 seed implantation.


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