Epigenetic regulation of spatiotemporal gene expression in ontogenesis is determined by programmed species-specific activations of retroelements in successive cell divisions. Evolutionary selection of this genome control mechanism is aimed at achieving a mature state, after which unprogrammed activation of retroelements occurs, which expression products stimulate interferon response, aseptic inflammation and aging-associated diseases development, such as atherosclerosis. Interferon in atherosclerosis stimulates pro-inflammatory macrophage phenotype, which contributes to pathological immune response, foam cell formation and atherosclerosis progression. Activation of retroelements occurs under the influence of viral infections, which role in atherosclerosis development has been proven, which confirms my hypothesis. Dysfunctional foam macrophages produce HERV-K102, which stimulates innate immunity, HERV-K HML2 expression correlates with macrophage immune activation and interferon response. Data were obtained on association with atherosclerosis of microRNAs derived from retroelements, which are involved in the disease pathogenesis due to their influence on cholesterol metabolism (miR-498, -520d), immune processes (miR-1257, -28, -2909), activation of DNMT1 (miR-1264) and EZH2 (miR-630), gene expression in endothelial cells (10 specific miRNAs), vascular smooth muscle cells (14 specific miRNAs) and macrophages (miR-320b, -326, -378, -384), contributing to pathological phenotype of these cells. In atherosclerosis microRNAs derived from retroelements interact with circular RNAs (miR-495, -576, -579, -630, -633, -637, -942) and long non-coding RNAs (miR-326, -4731, -495, - 616, -641, -664a) the key sources of which are retroelements. Role of ANRIL, NEAT1, PAPIA, MAARS, VINAS, H19, AK136714, MIAT, and interaction of Alu elements with ANRIL and NEAT1, identified in atherosclerosis development. The data obtained can become the basis for targeted effect on retroelements activation in atherosclerosis using microRNAs.
| Attachment | Size |
|---|---|
| 449.97 KB |
The focus of this review is on the study of aberrant metabolism in brain cells in Parkinson's disease. Parkinson's disease is the second most prevalent neurodegenerative disorder, characterized by the aggregation of the pathological protein α-synuclein, loss of dopaminergic neurons in the compact part of the substantia nigra, leading to a combination of motor and non-motor symptoms. While the hallmark motor symptoms of PD are well-documented, emerging research sheds light on intricate metabolic changes occurring at the cellular level, providing new insights into the pathophysiology of the disease. Studying the role of endogenous small molecules in protein-metabolite intermolecular interactions, conformational rearrangements of protein molecules, especially membrane receptors and transporters in regulating blood-brain barrier permeability, modulation of signaling transduction processes in neuroinflammation and neurodegeneration, remains pertinent.
| Attachment | Size |
|---|---|
| 1.89 MB |
Injury to the proximal part of the equine suspensory ligament (SL), called proximal suspensory desmitis (PSD), commonly causes lameness in horses. PSD is extremely difficult to manage and treat, with present methods often unable to achieve full recovery, especially in chronic cases. The present study was the first to use gene therapy to restore moderate and severe injuries of the proximal suspensory ligament in horses. Plasmid DNA encoding species specific bone morphogenetic protein 2 (bmp2) and vascular endothelial growth factor (vegf164) was injected into the site of proximal suspensory ligament injury, followed by box rest and a controlled exercise program. Clinical observations and ultrasound imaging were used to evaluate effectiveness over a period of 12 months. No negative side effects were observed. Clinical improvements were observed, especially in the forelimb affected horses, by day 30. In horses with chronic hindlimb PSD, few clinical improvements were reported. Echogenicity and the fiber alignment scoring improved but no concomitant changes to cross section area, dorsopalmar thickness or lateromedial width of the proximal suspensory ligament were observed. The transfer of bmp2 and vegf164 genes into the equine PSL exhibited beneficial effects in horses with acute or subacute forms of lesions, primarily in the forelimb.
| Attachment | Size |
|---|---|
| 1.15 MB |
Heavy metals, due to their ability to bioaccumulate and are highly toxic even in low concentrations, are the most dangerous environmental pollutants, especially in industrialized countries. The purpose of the study was to evaluate the degree of cadmium accumulation, as well as the expression of the Mt1a and Mt2a genes, in the kidneys of rats using two experimental models of subchronic intoxication with cadmium chloride. A total of 80 adult white outbred rats of both sexes were equally distributed into four groups: a control group (negative control), group 1 (0.001 mg/kg/day CdCl2), group 2 (0.01 mg/kg/day CdCl2), 3rd group (0.1 mg/kg/day CdCl2). After three months of exposure, 10 animals (5 males and 5 females) were randomly selected from each group and euthanized, followed by kidney samples for cadmium analysis and gene expression assessment. The remaining animals (n = 40) were left for an additional 30 days without treatment, before being sacrificed to collect tissue. The results showed that 1 month after cadmium withdrawal, the processes of redistribution of the metal in the body are still ongoing, which is expressed in a greater accumulation of cadmium in the kidneys. We also recorded an increase in the Mt1a gene expression and a decrease in the Mt2a gene expression in the kidneys of animals that went through the remission stage compared to animals without it. These data suggest that even after Cd withdrawal, there may be long-term negative effects on the kidneys.
| Attachment | Size |
|---|---|
| 719.38 KB |
Obesity is recognized as a multifactorial health condition characterized by excess body fat accumulation. Orlistat is a well-known effective anti-obesity therapeutic drug, however, like many other medications on the market, it has certain unpleasant side effects. Medical herbs have recently acquired popularity in the treatment of obesity. The current project's intention was to evaluate the effect of treatment with Artemisia annua extract (AAE) to ameliorate hepato-renal dysfunction in obese rats. 40 male Sprague Dawley (SD) rats were divided into 4 groups (n = 10). The 1st group (Gp1) served as a negative control, and Gp2 was used as a positive control and given a high-fat diet (HFD) for a period of 12 weeks. For a period of 8 weeks, Gp3 and Gp4 received HFD and daily treatments of orlistat (30 mg/kg) or AAE (150 mg/kg), respectively. Hematological, biochemical, and histopathological parameters were determined. The results demonstrated that obese rats, Gp2, had hepato-renal impairment. Moreover, hepato-renal dysfunctions were exacerbated when orlistat was administered to obese rats of Gp3. In contrast, AAE-treated obese rats, Gp4, have shown alleviated hematological changes and resulted in considerable improvements in hepato-renal function. Taken together, AAE administration demonstrated potential ameliorative effects against hepato-renal dysfunctions in obese rats when compared to treatment with orlistat.
| Attachment | Size |
|---|---|
| 3.26 MB |
Herniated (prolapsed) discs HD is a multifactor disease that afflicts around 9% of the global population and occurs when the nucleus pulposus NP bulges and pushes on the ruptured annulus fibrosus AF, releasing substances that may irritate the surrounding nerves and cause inflammation that leads to extensive histopathological and immunological changes. The aim of this study is to demonstrate the etiological role of IL-10, IL-17 levels, CD4+, and CD68 in the pathogenesis of herniated disc in Iraqi patients. The immunohistochemical analysis was performed on 30 excised HD specimens taken during endoscopic discectomy, and stored in the fixative solution (formalin 10%). Cytokines (IL-10 and IL-17) were measured by using their Enzyme-Linked Immunosorbent Assay ELISA kits, in sera of 40 patients who were diagnosed with HDs as a case group, in addition to 20 healthy as a control group. The results revealed that the CD4+ expression was negative in 70% of the HD samples, while only 8 HD samples were negative for CD68 expression. On the other hand, results of ELISA analysis recorded high levels of IL-10 with low levels of IL-17 in HD patients sera compared with control sera. According to the above it can concluded that immunohistochemical analysis of HD tissues showed infiltration of CD4+ and CD68. Also compared to controls high levels of IL-10 in HD samples combined with low levels of IL-17.
| Attachment | Size |
|---|---|
| 748.85 KB |
Breast cancer (BC) is one of the most common causes of death among women in the world. This study investigated the role of global DNA methylation (5mC) and hypoxia-inducible factor 1 alpha (HIF-1α) levels in BC disease progression. Blood samples were collected from 40 patients with benign breast tumors, 40 patients with malignant breast tumors, and 40 healthy subjects. Patients with malignant breast tumors were divided into two groups: women in stage II (low-level), and patients in stages III and IV (high-level). Genomic DNA was isolated from whole blood samples from the subjects and used for global DNA methylation. Furthermore, the levels of HIF-1α expression were measured. The results showed that the levels of 5mC in patients with BC and benign breast tumors were considerably lower (0.538 ± 0.03 and 0.432 ± 0.04%, respectively), compared to the control (0.619 ± 0.05%). Furthermore, there was a significant (p ≤ 0.05) decrease in levels of 5mC in BC patients at stages III and IV compared to control. However, there were no significant differences between low-level and high-level stages. The HIF-1α levels of patients in both the benign breast tumors and BC were insignificant (923.35 ± 72.42 and 1386.03 ± 102.01pg/ml, respectively), compared to the control (825.5 ± 62.36 pg/ml). Although, BC patients at low levels showed no significant difference in HIF-1α levels compared with patients at high levels. The findings indicated that variations in 5mC levels across different stages and types of breast tumors may serve as a prognostic indicator for the development of BC and also implicated HIF-1α in the development of BC.
| Attachment | Size |
|---|---|
| 542.34 KB |
This study was designed to assess the harmful impact of Duprost on the testes of experimental animals. The animals were divided into 3 categories: control, acute, and chronic; the last two were further divided into subgroups. All acute subgroups were given a lonely oral dosage of 0.5, 0.12, 0.08, and 0.04 mg/kg for 24 hours. The chronic subgroups were given a daily dosage of 0.12, 0.08, 0.04 mg/kg for 42 days. The sections of treated testes of acute and chronic sets showed pathological alterations mainly in dosages (0.12 mg/kg and 0.08 mg/kg). The higher dosages cause cellular depletion, necrosis and lysis of the testicular interstitium, hyperplasia and increased thickness of the interstitium. Moreover, there was marked hypertrophy, marked tubular dilation and deterioration with severe degeneration and necrosis of lining epithelium with a loss of stereocilia in epididymis tissue.
| Attachment | Size |
|---|---|
| 1.66 MB |
Ionising radiation from radiotherapy can cause thyroid disease, autoimmune antibodies, and haematological invasion. Ionising radiation affects the immune system, and surpassing the body's tolerance can damage the hematopoietic system, causing early symptoms and serious consequences. The study used ELISA technique to determine autoantibodies and thyroid hormones in whole blood samples from Iraqi physician in Baghdad city for nuclear medicine which exposed daily to radiotherapy according to their routine job. CBC were also determined using autoanalyzer. A group of healthy control patients was also studied. Blood samples from Iraqi doctors who were routinely exposed to radiation were examined, a statistically significant decrease (P ≤ 0.01) in the serum levels of the Triiodothyronine (T3) and Thyroxine 4 (T4) and a statistically significant elevation (P ≤ 0.01) of Anti-Thyroid peroxidase Ab (Anti-TPO Ab), Anti-Thyroglobulin Ab (anti-Tg Ab), and antinuclear antibody (ANA) serum levels in female were seen in contrast to the healthy control group. Compared to healthy controls, female workers had less RBCs and Hb. For that, it can be concluded that the exposure to radiotherapy is effective in female more than male workers in Baghdad city for nuclear medicine which can be due to the effect of radiation low dose on female autoimmune system.
| Attachment | Size |
|---|---|
| 777.34 KB |
This review analyzes current trends in the development of traditional (open-loop) methods of non-invasive brain stimulation, as well as promising directions for the development of closed-loop methods of adaptive neurostimulation. The main focus is on studies using non-invasive magnetic and electrical stimulation, as well as acoustic and audiovisual stimulation. The possibilities and prospects for using these technologies as a tool in carrying out a wide range of rehabilitation procedures are analyzed. The results of the authors' own research in this direction are presented.
| Attachment | Size |
|---|---|
| 272.87 KB |


