scholarly journals Features of local and systemic production of pro-inflammatory, chemoattractant mediators and vascular growth factors in high-risk corneal transplants.

2021 ◽  
pp. 20-28
Author(s):  
V. Neroev ◽  
N. Balatskaya ◽  
E. Chentsova ◽  
I. Kulikova ◽  
H. Shamkhalova
Keyword(s):  
Growth Factors ◽  
Graft Rejection ◽  
Adaptive Immune Response ◽  
Control Group ◽  
Rejection Reaction ◽  
Vascular Growth ◽  
Adaptive Immune ◽  
Healthy Donors ◽  
Corneal Transplants ◽  
High Concentrations

Purpose: to study the composition and content of proinflammatory cytokines, chemoattractant mediators, vascular growth factors in blood serum (SB) and lacrimal fluid (LF) in patients with KPHR. Materials and methods. A total of 106 patients with postinflammatory corneal spots and turbid transplant were examined. The control group consisted of 20 practically healthy donors. Cytokines: IL-2, IL-18, MCP-1 / CCL2, MIP-1β / CCL4, RANTES / CCL5, Eotaxin / CCL11, IP-10 / CXCL10, SDF-1α / CXCL12, VEGF-A, VEGF-D, PIGF-1, HGF / SF. Results. The study of the levels of systemic production of immunomodiators in the groups of patients revealed significant changes in the concentrations of MCP-1 / CCL2, RANTES / CCL5, Eotaxin / CCL11, IP-10 / CXCL10, SDF-1α / CXCL12, as well as angiogenic factors VEGF-A and HGF / SF compared to controls. In the group of primary KPHR in the presence of vascularization, an increase in the production of IL-18, RANTES / CCL5, Eotaxin / CCL11 was observed. 1 / CCL2, VEGF-A, PIGF-1 and HGF / SF (p<0.05). Graft vascularization in repeated (2 and higher) corneal transplants (group II) was associated with significant increases in SC IL-2, PIGF-1, and HGF/SF (p<0.05). Analysis of cytokine content in the LF of patients with repeated KPHR and vascularized graft showed a statistically significant increase in IP-10 / CXCL10, MIP-1β / CCL4, SDF-1α / CXCL12, and VEGF-A. A retrospective analysis of the content of cytokines in the SB, depending on the outcomes of keratoplasty, showed a significant increase in the concentration of 7 out of 11 studied cytokines in patients of the KPHR group with various complications in the postoperative period, including those with a developed graft rejection reaction. Conclusions. It has been shown that the formation of vascularized corneal spots is associated with a significant increase in systemic production of IL-18, an increase in the concentration of chemokines with angiogenic activity RANTES / CCL5 and Eotaxin / CCL11 in the blood of patients with KPHR. During vascularization of the graft with repeated KPHR in the SB and LF, a unidirectional increase in the levels of IL-2, MCP-1 / CCL2, growth of VEGF-A and HGF / SF is observed. A factor in the development of graft rejection is the initially high concentrations in the SB of patients with KPHR IL-2, IL-18, chemokines RANTES / CCL5, MIP1β / CCL4, VEGF-A, PLGF, HGF / SF (p<0.05), indicating about the activation of pathological angiogenesis against the background of inflammation and an activated adaptive immune response.

Exercise training restores the endothelial response to vascular growth factors in patients with stable coronary artery disease

2011 ◽  
Vol 19 (3) ◽  
pp. 412-418 ◽  
Author(s):  
Ephraim B Beck ◽  
Sandra Erbs ◽  
Sven Möbius-Winkler ◽  
Volker Adams ◽  
Felix J Woitek ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Growth Factors ◽  
Coronary Artery ◽  
Exercise Training ◽  
Control Group ◽  
Serum Concentrations ◽  
Vascular Growth ◽  
Endothelial Response ◽  
Artery Disease ◽  
And Control

Objective: Exercise training partially corrects endothelial dysfunction in patients with coronary artery disease (CAD). Growth factors like vascular endothelial growth factor (VEGF) as well as erythropoietin (EPO) are known to modulate the bioavailability of nitric oxide and, thereby, contribute to the maintenance of a normal vascular tone. The aim of the present study was to determine the impact of 4 weeks of exercise training on circulating growth factors and to elucidate their involvement in the training-induced changes in vasomotion in patients with CAD. Methods and results: A total of 39 patients were enrolled (training group: n = 20; control group: n = 19). At start of study and after 4 weeks, average peak flow velocity (APV) of the left internal mammary artery (LIMA) in response to acetylcholine was measured invasively in the treatment and control groups. Serum concentrations of VEGF and EPO were determined by enzyme-linked immunosorbent assay. After exercise training, LIMA APV in response to acetylcholine was increased by 93% (from 69 ± 17% at start of study to 133 ± 16% at 4 weeks, p < 0.01 vs. start of study and control). At start of study, there was no association between any of the vascular growth factors and endothelial function. However, after exercise training a close correlation was apparent between the acetylcholine-induced change in APV and EPO ( r = 0.69, p < 0.01) and VEGF ( r = 0.76, p < 0.01) serum concentrations. In the control group, these correlations were not evident and there was no change in endothelial function either. Conclusion: Exercise training improves agonist-mediated endothelium-dependent vasodilatation in CAD, partially through a restoration of the endothelial response to EPO and VEGF.

scholarly journals EVALUATING THE ROLE OF IL-2 AND IL-6 IN PATIENTS WITH BURNS USING ELISA TECHNIQUE

2019 ◽  
Vol 1 (2) ◽  
pp. 85-89
Keyword(s):  
Immune Response ◽  
Age Groups ◽  
Adaptive Immune Response ◽  
Control Group ◽  
Serum Samples ◽  
Adaptive Immune ◽  
Significant Difference ◽  
Elisa Technique ◽  
Male Patients

Introduction: Burns are common medical infections that examined in hospitals. Cytokines are produced by innate immune response; cytokines determine the type of adaptive immune response. This study aims to screen and evaluate the role of IL-2 and IL-6 levels in the serum of patients who have suffered from burns by ELISA technique. Methods: Seventy serum samples were collected from burned patients in Baghdad city hospitals and tested by ELISA technique to detect IL-2 and IL-6 levels. Results: Shows great differences in IL-2 level of male patients (30.16 pg/ml) compared to males control group by an average of (29.66 pg/ml). While IL-6 shows significant differences in female patients with range (63.39 pg/ml) and male (66.47 pg/ml) compared to females control group (2.48 pg/ml) and males (22.80 pg/ml). Moreover cytokines shows significant differences between the three age groups of burned patients in comparison with the control group. In conclusion the result of present study showed significant difference in level of some cytokines IL-2,IL-6 for patients with burns. Conclusion: the result of present study showed significant difference in level of some cytokines IL-2, IL-6 for patients with burns.

Intrachannel versus Interchannel Application of Angiogenic Factors in Transmyocardial Laser Revascularization

Swiss Surgery ◽  
2001 ◽  
Vol 7 (3) ◽  
pp. 116-120 ◽  
Author(s):  
Mueller ◽  
Tevaearai ◽  
Genton ◽  
Chaubert ◽  
von Segesser
Keyword(s):  
Growth Factors ◽  
Histological Analysis ◽  
Control Group ◽  
Bovine Bone ◽  
Angiogenic Growth Factors ◽  
Vascular Growth ◽  
Laser Injury ◽  
Transmyocardial Laser Revascularization ◽  
Group 2 ◽  
Group 1

Background and Objective: Theoretically myocardial angiogenesis of laser injury can be further enhanced by the addition of angiogenic growth factors. The influence of the way of administration of these factors on vascular growth around the channels is still unclear. Materials and Methods: 18 pigs (mean weight 72 +/- 5.2 kg) were randomized to either triads of transmyocardial laser revascularization (TMLR) channels (group 1, n = 6) or isolated channels (group 2, n = 6), or a control group (n = 6). The animals had injections of bovine bone derived growth factor mixture either in the center of the triads in group 1 or within the channels themselves in group 2. Animals were sacrificed one month later for histological analysis. Results: The vascular densities of myocardial areas within the triads of group 1 and around the channels in group 2 were significantly larger than in the control group: 15.2 +/- 3.7/mm2 and 14.2 +/- 3.5/mm2 respectively vs 5.3 +/- 1.6/mm2(p < 0.001 for both differences). Differences of densities between group 1 and 2 were not statistically significant (p = 0.6).

scholarly journals Evaluation of the Effect of Probiotic Administration on Gene Expression in Goat Blood

2017 ◽  
Vol 7 (1) ◽  
pp. 88 ◽  
Author(s):  
Kingsley Ekwemalor ◽  
Emmanuel Asiamah ◽  
Bertha Osei ◽  
Hamid Ismail ◽  
Mulumebet Worku
Keyword(s):  
Immune Response ◽  
Wnt Signaling ◽  
Signaling Pathway ◽  
Wnt Signaling Pathway ◽  
Adaptive Immune Response ◽  
Control Group ◽  
Sterile Water ◽  
Adaptive Immune ◽  
Expression Of Genes ◽  
Probiotic Treatment

The objective of this study was to assess the molecular impact of probiotic administration on genes involved in homeostasis and immunity in goat blood. Following initial screening for infection, one-week post weaning, female SpanishXBoer goats were drenched daily with the recommended doses of FASTtrak microbial pack (Conklin Company Inc., Shakopee, MN) in 10 mL sterile water over an 8-week period. The control group were given sterile water. Blood samples were collected weekly. Total RNA was isolated from blood collected at the beginning of the study (week 0) and at the end of the study (week 8) using Tri-reagent and then reverse-transcribed to cDNA using the Ambion-Retroscript kit. Quantification of genes was performed in the CFX96TM Biorad Real-Time PCR detection system with the addition of the dye SYBR green. The cow Wingless (Wnt) signaling pathway, Human Innate & Adaptive Immune Responses and the Cow Inflammatory Cytokine & Receptors RT² Profiler™ PCR Arrays (QIAGEN, Valencia, CA) were used to profile the expression of 84 genes involved in each pathway. Probiotic treatment had no effect on body weight, body condition, fecal egg count and RNA concentration (p>0.05). Packed cell volume and FAMACHA scores were significantly improved by probiotic administration. Results from RT-PCR showed increased expression of genes in innate and adaptive immune response, cytokine and Wnt pathways in response to probiotics. Probiotics induced the expression of 32 genes involved in innate and adaptive immune response inflammatory cytokines, and 48 genes involved in the Wnt signaling pathway. This study provides evidence for a systematic effect of oral probiotic administration on expression of genes involved in immunity and homeostasis in goat blood.

The Toxicity of Castor Beans and its Treatment with Doxycycline in Local Rabbits

2018 ◽  
Vol 9 (2) ◽  
Author(s):  
Nael Mohammed Sarheed ◽  
Osamah Faisal Kokas ◽  
Doaa Abd Alabas Muhammed Ridh
Keyword(s):  
Castor Bean ◽  
The Body ◽  
Control Group ◽  
High Concentration ◽  
Biochemical Tests ◽  
Doxycycline Treatment ◽  
High Concentrations ◽  
Physiological Tests ◽  
Animal House ◽  
Physiological And Biochemical

The plant of castor is widely spread in the Iraqi land, and characterized with containing ricin toxin, which has a very serious effects, and because the seeds of this plant scattered in the agricultural soil and rivers water, which increases the exposure of humans and animals to these beans. Objective: This experiment was designed to study the effect of high concentration of castor bean powder in some physiological and biochemical parameters and changes in some tissues of the body, as well as trying to use doxycycline to reduce the effects of ingestion of these seeds. Materials and Methods: In the experiment, 24 local rabbits were raised and fed in the Animal House of the Faculty of Medicine / Al-Muthanna University, then divided into four groups and treated for three weeks (21 days), Control group: treated with normal saline solution (0.9) orally throughout the experiment, G1: was treated orally with a concentration of 25 mg / kg of castor bean powder daily during the experiment, G2 : orally treated 25 mg / kg of castor bean and 25 mg / kg of doxycycline, G3: orally treated 25 mg / kg of castor powder with 50 mg / kg of doxycycline daily throughout the trial period. Results: The results of the experiment showed significant changes (P less than 0.05) in all physiological and biochemical blood tests when compared with control group. There was a significant decrease in PCV, Hb, RBC, T.protein and body weights, while demonstrated a significant increase in WBC, Urea, Creatinine, ALT, AST and ALP, with distortions in liver and kidney of animals that treated with Castor beans. In contrast, the treatment with doxycycline and caster beans showed significant improvement reflected by a normal proportion in physiological tests and biochemical tests with improvement in the tissues when compared to control group. Conclusions: It can be concluded from this study that castor bean has high toxic and pathogenic effects that may be dangerous to the life of the organism. Therefore, it is advisable to be cautious of these pills and avoid exposure to them, also recommended to take high concentrations of doxycycline treatment when infected with castor bean poisoning.

Is Alzheimer disease a failure of mobilizing immune defense? Lessons from cognitively fit oldest-old

2019 ◽  
Vol 21 (1) ◽  
pp. 7-19 ◽  
Keyword(s):  
Alzheimer Disease ◽  
Cognitive Aging ◽  
Oldest Old ◽  
Adaptive Immune Response ◽  
Effector T Cells ◽  
Immune Defense ◽  
Supporting Evidence ◽  
Therapeutic Approaches ◽  
Related Data ◽  
Adaptive Immune

Multifaceted evidence supports the hypothesis that inflammatory-immune mechanisms contribute to Alzheimer disease (AD) neuropathology and genetic association of several immune specific genes (TREM2, CR1, and CD33) suggests that maladaptive immune responses may be pivotal drivers of AD pathogenesis. We reviewed microglia-related data from postmortem AD studies and examined supporting evidence from AD animal models to answer the following questions: i) What is the temporal sequence of immune activation in AD progression and what is its impact on cognition? ii) Are there discordant, "primed", microglia responses in AD vs successful cognitive aging? iii) Does central nervous system (CNS) repair in aging depend on recruitment of the elements of cellular adaptive immune response such as effector T cells, and can the recruitment of systemic immune cells ameliorate AD neuropathology? iv) How effective are the immune-system-based therapeutic approaches currently employed for the treatment of AD?

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