Research Progress on Leucine-Rich Alpha-2 Glycoprotein 1: A Review

Leucine-rich alpha⁃2 glycoprotein 1 (LRG1) is an important member of the leucine-rich repetitive sequence protein family. LRG1 was mainly involved in normal physiological activities of the nervous system, such as synapse formation, synapse growth, the development of nerve processes, neurotransmitter transfer and release, and cell adhesion molecules or ligand-binding proteins. Also, LRG1 affected the development of respiratory diseases, hematological diseases, endocrine diseases, tumor diseases, eye diseases, cardiovascular diseases, rheumatic immune diseases, infectious diseases, etc. LRG1 was a newly discovered important upstream signaling molecule of transforming growth factor⁃β (TGF⁃β) that affected various pathological processes through the TGF⁃β signaling pathway. However, research on LRG1 and its involvement in the occurrence and development of diseases was still in its infancy and the current studies were mainly focused on proteomic detection and basic animal experimental reports. We could reasonably predict that LRG1 might act as a new direction and strategy for the treatment of many diseases.

Red Blood Cell Classification Based on Attention Residual Feature Pyramid Network

Clinically, red blood cell abnormalities are closely related to tumor diseases, red blood cell diseases, internal medicine, and other diseases. Red blood cell classification is the key to detecting red blood cell abnormalities. Traditional red blood cell classification is done manually by doctors, which requires a lot of manpower produces subjective results. This paper proposes an Attention-based Residual Feature Pyramid Network (ARFPN) to classify 14 types of red blood cells to assist the diagnosis of related diseases. The model performs classification directly on the entire red blood cell image. Meanwhile, a spatial attention mechanism and channel attention mechanism are combined with residual units to improve the expression of category-related features and achieve accurate extraction of features. Besides, the RoI align method is used to reduce the loss of spatial symmetry and improve classification accuracy. Five hundred and eighty eight red blood cell images are used to train and verify the effectiveness of the proposed method. The Channel Attention Residual Feature Pyramid Network (C-ARFPN) model achieves an mAP of 86%; the Channel and Spatial Attention Residual Feature Pyramid Network (CS-ARFPN) model achieves an mAP of 86.9%. The experimental results indicate that our method can classify more red blood cell types and better adapt to the needs of doctors, thus reducing the doctor's time and improving the diagnosis efficiency.

The use of digital technologies in the diagnosis of tumor diseases at the pre-medical stage

Aim. To improve the effectiveness of tumors and risk factors detection in reducing time costs at the pre-medical stage using a robotic complex. Methods. To achieve this goal, the previously created robotic complex with a program for self-questioning, taking into account gender, has been improved. A portable USB microscope was built into the complexs housing to transmit images of pathological changes of visible localizations to the touch screen. The survey and examinations were conducted by clinical residents and students of the case-control type in 1638 patients at the Novgorod Regional Clinical Oncological Dispensary (in 20192021) as part of the Doors Open Days. The average age of patients was 54.68.9 years, including 703 men and 935 women. Descriptive statistics methods of Statistica 6.0 software were used. Qualitative characteristics showed as absolute number and the relative value in percentage (%). The differences were considered statistically significant at p 0.05. Results. The use of the complex allowed us to suspect cancer risk factors in 9.031.3% patients, of which 31.081.8%, or 2.82.1% (p=0.017) of the total patients with the further examination was able to confirm oncology-related findings. Patients complained of discomfort in the stomach (59 people) underwent a breath test built into the program of the complex, according to the results of which helicobacteriosis was detected in 29 patients. In 17 patients with fibrogastroscopy, intestinal metaplasia was subsequently established, in 4 gastric ulcers, 3 of which had malignancy. Conclusion. The use of a robotic complex-2 saves the time of a doctor of a lean polyclinic and improves the effectiveness of identifying cancer risk factors and early-stage cancer.

Medicinal methods for the treatment of malignant tumors

Medicinal methods for the treatment of tumor diseases have been intensively developed only in the last 10-15 years and are not well known to a wide circle of doctors, therefore the publication of this book is timely and necessary.

Concept and performance evaluation of two 3 GHz buncher units optimizing the dose rate of a novel preclinical proton minibeam irradiation facility

To demonstrate the large potential of proton minibeam radiotherapy (pMBRT) as a new method to treat tumor diseases, a preclinical proton minibeam radiation facility was designed. It is based on a tandem Van-de-Graaff accelerator providing a 16 MeV proton beam and a 3 GHz linac post-accelerator (designs: AVO-ADAM S.A, Geneva, Switzerland and ENEA, Frascati, Italy). To enhance the transmission of the tandem beam through the post-accelerator by a factor of 3, two drift tube buncher units were designed and constructed: A brazed 5-gap structure (adapted SCDTL tank of the TOP-IMPLART project (ENEA)) and a non-brazed low budget 4-gap structure. Both are made of copper. The performance of the two differently manufactured units was evaluated using a 16 MeV tandem accelerator beam and a Q3D magnetic spectrograph. Both buncher units achieve the required summed voltage amplitude of 42 kV and amplitude stability at a power feed of less than 800 W.

Description of invariant NKT cells.

Recently discovered subpopulations belonging to cell groups called “invariant” NKT, also referred to as type I NKT or classical NKT cells, appear to have a unique impact on the tumor microenvironment. Considering the characteristics of secreted cytokines, production of chemokines and the capability of cell cytotoxic activity, these cells have a significant function in being immune to bacteria, parasites, viruses, autoimmune and tumor diseases. The profile of secreted cytokine is probably decisive in reference to the distinct functions of the subpopulation, some of them exhibit immunosuppressive activity inhibiting an anticancer immune response, and the other stimulate the organisms for eradicating the tumor. Currently, it has been discovered six fundamental, functionally distinct subpopulations of iNKT cells (NKT1, NKT2, NKT10, NKT17, NKTreg, NKTFH).

Differentiated approach to radical surgical treatment of elderly patients with tumor diseases of the pancreatoduodenal zone

BACKGROUND: In recent years, there has been a widespread increase in the incidence of tumors of the pancreatoduodenal zone, especially noticeable in the older age group. A decrease in the incidence of postoperative complications and mortality after pancreatoduodenal resection made it possible to expand the indications for surgical treatment of elderly and senile patients. AIM: Improvement of the immediate results of pancreatoduodenal resection in the treatment of elderly and senile patients suffering from tumor diseases of the pancreatoduodenal zone. MATERIALS AND METHODS: Pancreatoduodenal resection was performed in 61 elderly and senile patients with tumors of the pancreatoduodenal zone. The main group consisted of 32 patients, whose treatment was carried out in accordance with the developed algorithm for choosing a method for forming a pancreatodigestive anastomosis based on a scale for assessing the risk of developing pancreatic fistulas. The comparison group consisted of 29 patients in whom the method of forming a pancreatodigestive anastomosis was carried out in accordance with the preferences of the operator without taking into account the risk of developing a pancreatic fistula. RESULTS: In the main group, compared with the control group, pylorus-saving interventions were performed significantly more often 27 (84.4%) and 14 (48.3%) (p 0.01). There was also a decrease in the frequency of performing pancreaticojejunostomy 16 (50%) and 22 (75.9%) (p 0.05), due to the use of reservoir terminolateral pancreatojejunostomy 8 (25%) and 0, respectively (p 0.01). Postoperative complications were observed in 14 (43.8%) of the study group and in 21 (72.4%) patients of the comparison group (p 0.05). There was also a decrease in the incidence of postoperative pancreatic fistulas from 8 (27.6%) to 2 (6.2%) (p 0.05) in the study group. Repeated surgery was required in 5 (15.6%) patients of the main group and 11 (37.9%) in the comparison group (p 0.05). The lethal outcome was recorded in 3 (9.4%) patients of the main group and in 7 (24.1%) in the comparison group (p 0.05). CONCLUSIONS: The results of performing pancreatoduodenal resection in the treatment of elderly and senile patients can be comparable with the results of treatment of the general population. The use of the developed algorithm made it possible to reliably reduce the incidence of complications from 72.4 to 43.8% (p 0.05), postoperative pancreatic fistulas from 27.6 to 6.2% (p 0.05), as well as the frequency of repeated interventions. from 37.9 to 15.6 % (p 0.05). In addition, a downward trend in mortality was achieved from 24.1% to 9.4%.

Diagnosis of neoplastic diseases of reproductive system in context of healthcare system modernization: need for integrated approach

The relevance of the problem of screening of tumor diseases of reproductive organs is caused by high rates of incidence of tendencies to rejuvenation, unsatisfactory results of therapy. In Russia, indicators of active detection of acute respiratory disease, diagnosis in the preinvasive and early stages remain low, adversely affecting the quality and life expectancy of the patient and her reproductive function. The purpose of the study: on the basis of the analysis of literature sources to establish the reasons for the ineffectiveness of screening of tumorous diseases of the reproductive organs. The results of the bibliographic analysis of modern screening principles and methods have shown that the main reasons for unsatisfactory screening and early diagnosis of tumor diseases of reproductive organs should be considered low scoring coverage rates, inconsistency of the legislative base, inconsistency of the start time, end of examination and screening interval, lack of a single information base with the possibility of fiing and archiving results of the survey, violation of the logistics of data exchange conducted research, expressed the dissonance of diagnostic capabilities in different regions, lack of an integrated approach and a single screening program nationwide. One of the possible solutions to decide this problem should be a solution to the implementation of a comprehensive diagnostic survey with a simultaneous assessment of the condition of all organs of the reproductive system, including the mammary glands, in order to timely identify the tumor diseases of reproductive organs with the formation of risk groups for tumor pathology and to correct tactic of reference.

Modern Methods of Early Detection of Endometrial Cancer on the Example of “Pipelle” Urogenital Probe

Today, at a time when cancer is developing rapidly, a number of scientific studies are being conducted worldwide in the field of early detection, prevention and treatment of the disease. A number of new methods are being recommended by experts to put into practice, which is convenient, effective, rapid, uncomplicated and painless methods of early detection of tumor diseases especially uterine cancer in women.