scholarly journals Epidermal growth factor (EGF) promotes bone healing in surgically induced osteonecrosis of the femoral head (ONFH)

2018 ◽  
Vol 18 (4) ◽  
pp. 352-360 ◽  
Author(s):  
Ozgur Basal ◽  
Tolga Atay ◽  
İbrahim Metin Ciris ◽  
Yakup Barbaros Baykal
Keyword(s):  
Growth Factor ◽  
Femoral Head ◽  
Epidermal Growth Factor ◽  
Bone Healing ◽  
Control Group ◽  
Vascular Density ◽  
Sham Control ◽  
Significant Difference ◽  
Epidermal Growth ◽  
Surgically Induced

Angiogenic effects of epidermal growth factor (EGF), a potent mitogen, have been demonstrated previously. Moreover, different in vitro studies showed that EGF affects processes associated with bone healing, such as osteoblast differentiation and bone resorption. The aim of this study was to investigate the effect of combined core decompression (CD) and recombinant human EGF (rhEGF) treatment on early-stage osteonecrosis of the femoral head (ONFH) surgically induced in rats. ONFH was induced by dissecting the cervical periosteum and placing a ligature tightly around the femoral neck. Thirty rats were assigned to one of the following groups (n = 10 each group): sham-operated control, CD, and CD+rhEGF group. rhEGF was injected intraosseously into infarcted areas 2 weeks after the surgery. Preservation of femoral head architecture was assessed at 8 weeks post treatment by radiographic and histomorphological analyses. Osteopontin (OPN) and cluster of differentiation 31 (CD31) were detected by immunochemistry, as indicators of bone remodeling and vascular density, respectively. Inter- and intra-group (non-operated left and operated right femur) differences in radiographic and histomorphological results were analyzed. The femoral head area and sphericity were more preserved in CD+rhEGF compared to CD and sham-control group. CD31 levels were significantly different between the three groups, and were higher in CD+rhEGF compared to CD group. OPN levels were increased in CD and CD+rhEGF groups compared to sham control, but with no significant difference between CD and CD+rhEGF groups. Overall, our results indicate that EGF promotes bone formation and microvascularization in ONFH and thus positively affects the preservation of femoral head during healing.

scholarly journals Therapeutic Effect of Epidermal Growth Factor Combined With Nano Silver Dressing on Diabetic Foot Patients

2021 ◽  
Vol 12 ◽  
Author(s):  
Kaihua Zhang ◽  
Yiran Li ◽  
Jiarui He ◽  
Jiasheng Xu ◽  
Yanhua Wan ◽  
...  
Keyword(s):  
Wound Healing ◽  
Growth Factor ◽  
Epidermal Growth Factor ◽  
Diabetic Foot ◽  
Factor Group ◽  
Saline Control ◽  
Control Group ◽  
Nano Silver ◽  
Significant Difference ◽  
Epidermal Growth

Objective: To investigate the clinical efficacy of epidermal growth factor combined with nano silver dressing in the treatment of diabetic foot wounds.Methods: A total of 160 patients with diabetic foot ulcers admitted to the Second Affiliated Hospital of Nanchang University from 2015-06 to 2018-06 were selected to participate in the experiment. A randomized table method was used to randomly divide 160 patients into 4 groups: 40 in the epidermal growth factor group, 40 in the nano-silver dressing group, 40 in the combined group, and 40 in the saline control group (normal saline). The healing stage of the wound surface and the growth degree of granulation tissue were graded. Each group was given a dressing change every other day, and the time required for wound repairing to each healing stage was observed. After 2 and 4 weeks of treatment, the wound exudate was collected for bacterial culture.Results: There was no significant difference in the time between the four groups of patients reaching the effective phase of treatment (level 1). Compared with the control group, the epidermal growth factor group and the combined group achieved a shorter time for wound repairing to healing stages 2 and 3, and the difference was significant (p < 0.05). The combined group had a shorter wound repairing time than the epidermal growth factor group (p < 0.05). Compared with the control group, the positive rate of bacteria in the combined group and the silver nanoparticles group was significantly lower after 2 and 4 weeks of treatment.Conclusion: There is no significant difference in wound healing between the four groups during the clinically effective period. After this period, the combined use of recombinant epidermis Growth factors and nano-silver dressings have a significant effect on promoting wound healing and can effectively prevent infection.

scholarly journals Epidermal growth factor as a potential prognostic and predictive biomarker of response to platinum-based chemotherapy

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0252646
Author(s):  
Margot Geens ◽  
Sofie Stappers ◽  
Heleen Konings ◽  
Benedicte Y. De Winter ◽  
Pol Specenier ◽  
...  
Keyword(s):  
Lymph Node ◽  
Growth Factor ◽  
Lymph Node Metastasis ◽  
Epidermal Growth Factor ◽  
Healthy Volunteers ◽  
Control Group ◽  
Node Metastasis ◽  
Oncological Patients ◽  
Platinum Based Chemotherapy ◽  
Epidermal Growth

In this study, we investigated serum epidermal growth factor (EGF) in an oncological population of head- and neck and pulmonary neoplasms and whether serum EGF could serve as a prognostic marker of survival and as a predictive marker for treatment response to platinum-based chemotherapy. A total of 59 oncological patients and a control group of age- and sex-matched healthy volunteers were included in this study. Pre-treatment serum EGF from both groups was determined. Patient’s and tumour characteristics and mortality were recorded during a 5-year follow up period. Baseline serum EGF significantly differed between the oncological patients and the healthy volunteers (p<0.001). Serum EGF was associated with lymph node metastasis (p = 0.004) but not with sex (p = 0.753), age (p = 1.00), TNM stage (p = 0.191) or tumour size (p = 0.077). Neither serum EGF (p = 0.81) nor age (p = 0.55) showed an effect on the patient’s survival. Tumour location was significantly associated with overall 5-year survival (p = 0.003). The predictive capacity of serum EGF of response to chemotherapy was limited (AUC = 0.606), a sensitivity of 80% and a specificity of 56% was observed resulting in a likelihood ratio of a positive and negative test equal to 1.81 and 0.36, respectively. In conclusion, serum EGF levels are 5.5 times higher in an oncological population compared to a control group. Within the oncological population, low serum EGF values are associated with the presence of lymph node metastasis. Further investigation is necessary to determine if the serum EGF levels could serve as a diagnostic biomarker.

The effect of epidermal growth factor on liver lipid peroxidation and glutathione levels in lobectomized rats

1992 ◽  
Vol 70 (3-4) ◽  
pp. 259-262 ◽  
Author(s):  
Nahide Gokcora ◽  
Sadi Gundogdu ◽  
Aysel Aricioglu ◽  
Deniz Erbas ◽  
Osman Durmus ◽  
...  
Keyword(s):  
Lipid Peroxidation ◽  
Growth Factor ◽  
Epidermal Growth Factor ◽  
Liver Lipid ◽  
Lipid Peroxide ◽  
Submaxillary Gland ◽  
Control Group ◽  
Key Factor ◽  
Male Wistar Rats ◽  
Epidermal Growth

Epidermal growth factor (EGF) is a growth-promoting polypeptide which is found in highest levels in male mice in the submaxillary gland. It may also be a key factor in regeneration of the liver. We performed experiments with 18 male Wistar rats, divided into three groups. Hepatic left lobectomy (%30) was performed on the first group of rats. This group received an intraperitoneal injection of EGF for 7 days. The second group was the control group into which normal saline was injected for 7 days. The third group was sham-operated. On days 5 and 7 tomographic studies of liver were performed. On day 7 EGF levels, lipid peroxidation, and glutathione in liver were measured in all of the rats. While serum EGF levels did not show any significant change, the levels of lipid peroxide were decreased and glutathione was increased. Tomographic measurements indicated that administration of EGF increased the amount of regeneration.Key words: epidermal growth factor, liver lobectomy, lipid peroxide, glutathione, radioimmunoassay.

PSX-B-13 Effect of epidermal growth factor and prolactin on the quality of bovine oocytes aging in vitro

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 327-327
Author(s):  
Ekaterina Shedova ◽  
Galina Singina ◽  
Irina Y Lebedeva ◽  
Aleksandr Lopukhov
Keyword(s):  
Growth Factor ◽  
Epidermal Growth Factor ◽  
Control Group ◽  
Tunel Staining ◽  
Apoptosis Resistance ◽  
Prolonged Culture ◽  
Epidermal Growth ◽  
Bovine Oocytes

Abstract The evaluation of factors responsible for the protection of the oocytes attained the metaphase-II stage from aging is importance for successful in vitro embryo reproduction. The aim of the present research was to study dose-dependent effects of epidermal growth factor (EGF) and prolactin (PRL) on the quality of bovine oocytes after their aging in vitro. Bovine cumulus-enclosed oocytes (CEOs) were matured in vitro for 20 h in TCM 199 containing 0.2 mM sodium pyruvate, 10% fetal calf serum (FCS), 10 μg/ml FSH and LH. At the end of in vitro maturation, oocytes were transferred to TCM 199 supplemented with 10% FCS (aging medium) and cultured for additional 24 h in the absence (Control) and in presence of EGF (10 and 50 ng/ml) and PRL (20 and 50 ng/ml). After prolonged culture oocytes were used for apoptosis detection (TUNEL staining, n=251) and the state of chromosomes evaluation (Tarkowski’s cytogenetic method, n=359). The data from 3–4 replicates were analyzed by ANOVA. At the end of prolonged culture (24 h) the rate of apoptotic oocytes in the Control group was 47.4±8.5%. EGF at concentration of 10 ng/ml and PRL at both doses decreased this rate to 15.0–22.1% (p &lt; 0.05). Furthermore, PRL (not EGF) reduced the frequency of abnormal chromosome modifications (decondensation, adherence, clumping) at concentrations of 20–50 ng/ml from 58.7±2.1% (Control) to 41.2±1.9 and 45.6±2.7% respectively (p &lt; 0.01). Thus, EGF and PRL is able to maintain the apoptosis resistance of bovine oocytes during their prolonged in vitro culture as well as PRL have the decelerating effect on abnormal modifications of M-II chromosomes. The research was supported by RFBR (17-29-08035) and the Ministry of Science and Higher Education of Russia.

107 PRODUCTION OF EPIDERMAL GROWTH FACTOR BY BOVINE ENDOMETRIAL CELLS AND ITS EFFECTS ON EMBRYONIC INTERFERONT AND PROSTAGLANDIN

2015 ◽  
Vol 27 (1) ◽  
pp. 146 ◽  
Author(s):  
T. J. Acosta ◽  
K. Takatsu
Keyword(s):  
Growth Factor ◽  
Epidermal Growth Factor ◽  
Epithelial Cells ◽  
Stromal Cells ◽  
Pge2 Production ◽  
Bioactive Molecules ◽  
Significant Difference ◽  
Epidermal Growth ◽  
Maternal Recognition Of Pregnancy ◽  
Cells Cultured

A dynamic interaction between bioactive products of the embryo (blastocyst) and the endometrium is crucial for the successful establishment of pregnancy. In ruminants, the principal signal for maternal recognition of pregnancy is interferon-τ (IFNT) secreted by the trophoectoderm between Days 8 and 20 post-fertilization. Epidermal growth factor (EGF) produced by the endometrium acting through EGF receptors (EGFR) present in the blastocyst seems to regulate embryonic production of IFNT. Epidermal growth factor and IFNT have been shown to play crucial roles in controlling luteolytic prostaglandin (PG) F2α (PGF) and luteotropic PGE2 production by bovine endometrium. However, it is unknown how these bioactive molecules regulate uterine function during maternal recognition of pregnancy. To clarify the main source of EGF in bovine endometrium and the mechanisms regulating the interaction between the hatched blastocyst and maternal uterine environment, the production of EGF by cultured endometrial epithelial and stromal cells and the effects of EGF on embryonic IFNT and PG were investigated. In addition, the effects of EGF on PGE2 and PGF production by cultured epithelial or stromal cells were examined. Endometrial epithelial and stromal cells were enzymatically isolated on the day of ovulation, seeded at a density of 100 000 viable cells mL–1, and cultured at 38°C in a humidified atmosphere of 5% CO2 in air. After the cells reached 90% confluence, they were cultured in the presence or absence of EGF (0.1, 1.0, 10, and 100 ng mL–1) for 24 h. Cells cultured in the absence of EGF and their cultured media were collected separately for protein analysis. Hatched bovine blastocysts (Days 8–10) were also cultured and exposed to EGF (1, 10, and 100 ng mL–1) for 24 h. Protein concentrations of EGF and IFNT in the cultured media were determined by commercial enzyme immunoassay kit. Hormonal concentrations were analysed by ANOVA followed by Fisher's protected least-significant difference procedure (PLSD) as a multiple comparison test by StatView (Abacus Concepts Inc., Berkeley, CA, USA). The concentration of EGF in the culture media of epithelial cells cultured in the absence of EGF was significantly (P < 0.05) higher than in the cultured media of endometrial stromal cells. Epidermal growth factor (10 and 100 ng mL–1) increased embryonic production of IFNT and luteotropic PGE2 production but not luteolytic PGF by hatched blastocyst. EGF (100 ng mL–1) increased both PGE2 and PGF production (P < 0.05) by cultured endometrial epithelial and stromal cells. The overall results suggest that endometrial epithelial cells rather than stromal cells are the main source of EGF. Epidermal growth factor produced by epithelial cells stimulates the production of IFNT by bovine trophoblasts. The capacity of conceptus to increase IFNT and luteotropic PGE2 production rather than luteolytic PGF in response to EGF stimulation may be essential for the establishment of pregnancy in cattle.

scholarly journals Effects of dietary supplementation with epidermal growth factor-expressing Saccharomyces cerevisiae on duodenal development in weaned piglets

2016 ◽  
Vol 115 (9) ◽  
pp. 1509-1520 ◽  
Author(s):  
Shujin Wang ◽  
Chunhua Guo ◽  
Lin Zhou ◽  
Zhendong Zhong ◽  
Wuzheng Zhu ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Growth Factor ◽  
Epidermal Growth Factor ◽  
Digestive Enzymes ◽  
Egf Receptor ◽  
Average Daily Gain ◽  
Dietary Supplementation ◽  
Control Group ◽  
Weaned Piglets ◽  
Epidermal Growth

AbstractThe aim of the present study was to assess the effects of dietary supplementation with epidermal growth factor (EGF)-expressing Saccharomyces cerevisiae on duodenal development in weaned piglets. In total, forty piglets weaned at 21–26 d of age were assigned to one of the five groups that were provided basic diet (control group) or diet supplemented with S. cerevisiae expressing either empty-vector (INVSc1(EV) group), tagged EGF (T-EGF) (INVSc1-TE(−) group), extracellular EGF (EE-EGF) (INVSc1-EE(+) group) or intracellular EGF (IE-EGF) (INVSc1-IE(+) group). All treatments were delivered as 60·00 μg/kg body weight EGF/d. On 0, 7, 14 and 21 d, eight piglets per treatment were sacrificed to analyse the morphology, activities and mRNA expressions of digestive enzymes, as well as Ig levels (IgA, IgM, IgG) in duodenal mucosa. The results showed significant improvement on 7, 14 and 21 d, with respect to average daily gain (P<0·05), mucosa morphology (villus height and crypt depth) (P<0·05), Ig levels (P<0·01), activities and mRNA expressions of digestive enzymes (creatine kinase, alkaline phosphatase, lactate dehydrogenase and sucrase) (P<0·05) and the mRNA expression of EGF-receptor (P<0·01) in NVSc1-TE(−), INVSc1-EE(+) and INVSc1-IE(+) groups compared with control and INVSc1(EV) groups. In addition, a trend was observed in which the INVSc1-IE(+) group showed an improvement in Ig levels (0·05<P<0·10), mRNA expressions of digestive enzymes and EGF-receptor (P<0·05) compared with NVSc1-TE(−) and INVSc1-EE(+) groups. These results indicate that supplementing recombinant EGF-expressing S. cerevisiae to the diet of weaned piglets enhanced duodenal development. Moreover, biological activity (Ig levels, mRNA expressions of digestive enzymes and EGF-receptor) of IE-EGF was better than either EE-EGF or T-EGF.

scholarly journals A comparative study of effect of epidermal growth factor on chronic leg ulcers with anti-septic dressing

2021 ◽  
Author(s):  
Mallikarjuna Reddy M. ◽  
Vijayabhaskarreddy Sirigireddy
Keyword(s):  
Growth Factor ◽  
Epidermal Growth Factor ◽  
Chronic Wounds ◽  
Substantial Reduction ◽  
Test Group ◽  
Control Group ◽  
Medical College ◽  
Group A ◽  
Epidermal Growth ◽  
Healing Wounds

Background: Chronic wounds, particularly non-healing wounds, are one of the most prevalent surgical disorders that a surgeon may see. The characteristic of a chronic wound is that it does not heal despite daily dressings and costly local treatments. Aims of the study to investigate the healing effects of recombinant human epidermal growth factor (hEGF) on non-healing ulcers and to assess the effectiveness, acceptability, and safety of a new epidermal growth factor (EGF) wound dressing.Methods: On 60 patients with chronic non-healing ulcers, a randomized, prospective, and comparative research was conducted in the department of general surgery, SVS medical college and hospital, Mahbubnagar. These 60 patients were separated into two groups, each with fifteen patients. The EGF was applied to group A, whereas normal saline was given to group B.Results: The 60 patients who agreed to participate in the trial were separated into two groups (30 each) that were equal and comparable. Patients who received topical EGF 0.01% gel dressings were assigned to the trial, whereas those who received standard antiseptic wound dressing were assigned to the control group. Six of the fifteen patients in the test group were men, whereas eleven were males and four were females in the control group. When the two groups were compared, the test group had a substantial reduction in ulcer area compared to the control group (p<0.001)Conclusions: EGF is a superior alternative for treating chronic non-healing ulcers because of its cost effectiveness, availability, reduced hospital stay, and simplicity of administration.

scholarly journals Prognostic Worth of Epidermal Growth Factor Receptor (EGFR) in Patients with Head and Neck Tumors

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Precious Barnes ◽  
F. A. Yeboah ◽  
Jinling Zhu ◽  
Roland Osei Saahene ◽  
Christian Obirikorang ◽  
...  
Keyword(s):  
Epidermal Growth Factor Receptor ◽  
Growth Factor ◽  
Epidermal Growth Factor ◽  
Head And Neck ◽  
Growth Factor Receptor ◽  
Head And Neck Tumors ◽  
Neck Tumors ◽  
Egfr Expression ◽  
Significant Difference ◽  
Epidermal Growth

Introduction. Head and neck tumors (HNT) are tumors that normally occur at the head and neck region of the body. Epidermal growth factor receptor (EGFR) has been found to be highly expressed in breast and other tumors; therefore, there is the need to investigate the level of EGFR expression among patients with head and neck tumors in Ghana. Method. The level of EGFR expression was determined in head and neck tumor and control head and neck tissues with quantitative real-time PCR and immunohistochemistry analysis. Results. The level of EGFR expressions was high in tumor tissues than in the control tissues. There was a significant difference of p value 0.025 among the ages >40 and ≤ 40 when the high and low level of EGFR was compared in the head and neck malignant tumor. The area under the curve for the high expression of EGFR among the malignant head and neck tumors was 0.901 with a specificity of 86.4%. Conclusion. EGFR can serve as a prognostic marker in monitoring patients with HNT as well as a molecular therapeutic target.

scholarly journals Expression of Gallus Epidermal Growth Factor (gEGF) with Food-Grade Lactococcus lactis Expression System and Its Biological Effects on Broiler Chickens

Biomolecules ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 103
Author(s):  
Yu Zhou ◽  
Pinpin Chen ◽  
Shuai Shi ◽  
Xiaowen Li ◽  
Deshi Shi ◽  
...  
Keyword(s):  
Growth Factor ◽  
Epidermal Growth Factor ◽  
Growth Performance ◽  
Lactococcus Lactis ◽  
Broiler Chickens ◽  
Biological Effects ◽  
Expression System ◽  
Control Group ◽  
Fermentation Product ◽  
Epidermal Growth

As a multifunctional polypeptide, epidermal growth factor (EGF) increases growth performance or enhances resistance to diseases in commercial broilers under adverse conditions. In this study, a recombinant Lactococcus lactis was established to produce the secretory form of bioactive gEGF. The results of in vitro testing showed that gEGF promoted the proliferation of chicken embryo fibroblast cells. A total of 63 5-day-old broiler chickens were evenly divided into three groups and treated with either M17 medium (the control group), supernatant of LL-pNZ8149 fermentation product (the P-LL group), or supernatant of LL-pNZ8149-gEGF fermentation product (the gEGF group). In two weeks, many measurements of growth, immunity and the intestines were significantly higher in the gEGF group than those in the control and the P-LL groups. Our study showed that the bioactive gEGF could be expressed with Lactococcus lactis expression system with the potential to enhance growth performance, immune function, and intestinal development in broiler chickens.

EGFRvIII peptide nanocapsules and bevacizumab nanocapsules: a nose-to-brain multitarget approach against glioblastoma

Nanomedicine ◽  
2021 ◽  
Author(s):  
Aline de Cristo Soares Alves ◽  
Vladimir Lavayen ◽  
Amanda de Fraga Dias ◽  
Franciele Aline Bruinsmann ◽  
Juliete Nathali Scholl ◽  
...  
Keyword(s):  
Epidermal Growth Factor Receptor ◽  
Growth Factor ◽  
T Lymphocytes ◽  
Epidermal Growth Factor ◽  
Tumor Size ◽  
Growth Factor Receptor ◽  
Molecular Targets ◽  
Control Group ◽  
Brain Delivery ◽  
Epidermal Growth

Aim: To evaluate the antitumor efficacy of bevacizumab-functionalized nanocapsules in a rat glioblastoma model after the pretreatment with nanocapsules functionalized with a peptide-specific to the epidermal growth factor receptor variant III. Materials & methods: Nanocapsules were prepared, physicochemical characterized and intranasally administered to rats. Parameters such as tumor size, histopathological characteristics and infiltration of CD8+ T lymphocytes were evaluated. Results: The strategy of treatment resulted in a reduction of 87% in the tumor size compared with the control group and a higher infiltration of CD8+ T lymphocytes in tumoral tissue. Conclusion: The block of two different molecular targets using nose-to-brain delivery represents a new and promising approach against glioblastoma.

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