Intestinal Ameboma Involving the Jejunum: First Case Reported in Medical Literature

Liquid biopsy: An arsenal for tumour screening and early diagnosis

At the moment, there are a huge number of risk factors for the development of a tumor process in the ovaries. One of the fundamental niches that allow us to suspect the presence of an imbalance in the body, and the presence of neoplasms is laboratory diagnostics. The purpose of our work was to evaluate changes in laboratory blood tests as a predictor of the development of oncological tumor process in the ovaries in patients of reproductive age (18-40 years). The collection and processing of laboratory data of 168 outpatient and inpatient medical histories of patients of reproductive age, operated on the basis of the Department of oncogynecology of the sbuz SOKOD for tumors and ovarian tumours from 2012 to 2015. Statistical analysis was performed using the statistical package SPSS21, license number 20130626-3 (An IBM Company; USA) and Microsoft Excel (Microsoft; USA). To achieve this goal, the patients were divided into groups according to the who morphological classification of 2013. A study of clinical blood analysis and biochemical blood analysis at the preoperative and early postoperative stages of treatment was conducted. The CA-125 titer was evaluated in two stages: as a qualitative and quantitative indicator. A study was also conducted for the presence of a genetic mutation in the BRCA 1 and 2 genes by taking a blood sample. In conclusion, we can conclude that on the basis of laboratory data it is impossible to conduct a differential diagnosis between tumors and tumor-like formations of the ovaries. When evaluating changes in General clinical blood tests, no significant changes were detected. Our work in a group of patients of reproductive age revealed the absence of mutations in the BRCA 1 and 2 genes. There was a significant increase in the tumor marker of the CA-125 titer (p = 0.015) in a group of patients with tumors and ovarian tumours aged 18–40 years.

Langerhans cells (LCs) play important roles in cell-mediated immune reactions, as well as in the pathogenesis of periapical lesions. The aim of this study is to evaluate the role of LCs in the proliferative epithelium of radicular cysts (RCs) and the release of the proinflammatory cytokine tumor necrosis factor α (TNF-α) associated with epithelial thickness. Thirty cases of RCs and 30 cases of residual RCs were randomly selected. Morphologic analysis was performed to evaluate the association between the inflammatory infiltrate, cystic epithelial thickness and lesion size, in addition to immunohistochemical assessment of CD1a, CD68, and TNF-α. The highest macrophage percentages and TNF-α scores were found in RCs (P=0.038 and 0.017, respectively). The largest number of LCs was observed in RCs (P=0.021), especially those exhibiting atrophic epithelium (P=0.05). In addition, LCs were positively correlated with the number of macrophages in both RCs and residual RCs (P=0.033 and 0.002, respectively). In contrast to LCs, the largest number of macrophages was detected in cases with an intense inflammatory infiltrate (P=0.022). In addition, the highest TNF-α scores were associated with an intense inflammatory infiltrate (P=0.024) when analyzed in the capsule of RCs (P=0.017). In conclusion, LCs participate in defense mechanisms and were present in all cases evaluated. Along with macrophages, these cells release proinflammatory cytokines such as TNF-α, which is responsible for inducing the continued proliferation of cystic epithelium.

Early diagnosis of acoustic tumors plays an important role in minimizing the disorder caused by operation and in the aspect of rehabilitation. It can be said that the otorhinolaryngologists' mission is to make an early diagnosis of acoustic tumors. A present, however, unfortunately, acoustic tumors are only rarely detected at the stage where the affected area is confined to the internal auditory meatus, i. e, so-called “ear tumor”. In many cases of early acoustic tumors, there are no abnormal objective findings except perceptive deafness and a reduced or extinct response on caloric nystagmus examination. On many occasions, neuro-otolbgical examination does not lead to a definite diagnosis of acoustic tumor but only suggests its presence. Therefore, we cannot but resort to diagnostic imaging in order to confirm the presence or absence of a tumor. As a next step, CT is performed following plain roentogenography, pluridirectional tomography, etc. Conventional CT where the limits of the detectable image in the diameter of the tumor have been considered to be 1.5-2cm is, however, not helpful for early diagnosis. For this reason, we have been troubled with a gap between what the functional test results indicate and CT-findings. We are now equipped with CT (from the Review of metrizamide cisternograms produced by GE CT/T) which seems to adequately fill such a gap and be useful for early diagnosis of acoustic tumors. We believe that CT-scan will reveal a greater number of cases of “ear tumor”.

Superficial non-ampullary duodenal epithelial tumor (SNADET) is defined as a sporadic tumor that is confined to the mucosa or submucosa that does not arise from Vater's papilla, and it includes adenoma and adenocarcinoma. Recent developments in endoscopic technology, such as high-resolution endoscopy and image-enhanced endoscopy, may increase the chances of detecting SNADET lesions. However, because SNADET is rare, little is known about its preoperative endoscopic diagnosis. The use of endoscopic resection for SNADET, which has no risk of metastasis, is increasing, but the incidence of complications, such as perforation, is significantly higher than in any other part of the digestive tract. A preoperative diagnosis is required to distinguish between lesions that should be followed up and those that require treatment. Retrospective studies have revealed certain endoscopic findings that suggest malignancy. In recent years, several new imaging modalities have been developed and explored for real-time diagnosis of these lesion types. Establishing an endoscopic diagnostic tool to differentiate between adenoma and adenocarcinoma in SNADET lesions is required to select the most appropriate treatment. This review describes the current state of knowledge about preoperative endoscopic diagnosis of SNADETs, such as duodenal adenoma and duodenal adenocarcinoma. Newer endoscopic techniques, including magnifying endoscopy, may help to guide these diagnostics, but their additional advantages remain unclear, and further studies are required to clarify these issues.

The cellular signaling and regulatory role of protein phosphatase in tumor diagnosis: Upstream miRNAs of PTEN

To identify factors that are associated with the emergence of nonepileptic seizures (NES) after resective epilepsy surgery. Twenty-two patients with medically refractory epilepsy in whom NESs were documented by EEG after resective surgery were compared with a larger series of epilepsy surgery patients on demographic, neurologic, and psychiatric variables. NES tended to become apparent in the first few months after surgery. Patients who developed NESs did not differ from other epilepsy surgery patients in terms of age, IQ, or preoperative psychiatric diagnoses. However, surgical NES patients' neurologic problems and seizures began later in life, the NES group included a larger proportion of female subjects and patients with right hemisphere surgery, and NES patients were more likely to develop non-NES psychiatric problems after surgery. The heterogeneous collection of behaviors subsumed under the label NESs are determined by multiple factors. Several variables were found to be specifically associated with the development of NES after resective epilepsy surgery: A disproportionate number of postsurgical NES patients are female, they have primary neurologic dysfunction in the right hemisphere, and their epileptic seizures often began after adolescence. We propose that at least one group of patients with somatoform tendencies develop NESs as part of the psychiatric instability that occurs often in the few months after resective surgery.

An accurate preoperative diagnosis of parotid tumors is essential for the selection and planning of surgical treatment. Various modern cross-sectional imaging and cytologic investigations can support the differential diagnosis of parotid tumors. The aim of this study was to achieve a comprehensive and updated review of modern imaging and cytologic investigations used in parotid tumor diagnosis, based on the latest literature data. This literature review could serve as a guide for clinicians in selecting different types of investigations for the preoperative differential diagnosis of parotid tumors. Magnetic resonance imaging (MRI) with its dynamic and advanced sequences is the first-line imaging investigation used in differentiating parotid tumors. Computed tomography (CT) and positron emission tomography (PET)-CT provide limited indications in differentiating parotid tumors. Fine needle aspiration biopsy and core needle biopsy can contribute with satisfactory results to the cytological diagnosis of parotid tumors. Dynamic MRI with its dynamic contrast-enhanced and diffusion-weighted sequences provides the best accuracy for the preoperative differential diagnosis of parotid tumors. CT allows the best evaluation of bone invasion, being useful when MRI cannot be performed, and PET-CT has value in the follow-up of cancer patients. The dual cytological and imaging approach is the safest method for an accurate differential diagnosis of parotid tumors.

BackgroundDiagnosis of chronic intestinal inflammation, which characterizes inflammatory bowel disease (IBD), along with prediction of disease state is hindered by the availability of predictive serum biomarker. Serum biomarkers predictive of disease state will improve trials for therapeutic intervention, and disease monitoring, particularly in genetically susceptible individuals. Chronic inflammation during IBD is considered distinct from infectious intestinal inflammation thereby requiring biomarkers to provide differential diagnosis. To address whether differential serum biomarkers could be identified in murine models of colitis, immunological profiles from both chronic spontaneous and acute infectious colitis were compared and predictive serum biomarkers identified via multivariate modeling.Methodology/Principal FindingsDiscriminatory multivariate modeling of 23 cytokines plus chlorotyrosine and nitrotyrosine (protein adducts from reactive nitrogen species and hypochlorite) in serum and tissue from two murine models of colitis was performed to identify disease-associated biomarkers. Acute C. rodentium-induced colitis in C57BL/6J mice and chronic spontaneous Helicobacter-dependent colitis in TLR4−/− x IL-10−/− mice were utilized for evaluation. Colon profiles of both colitis models were nearly identical with chemokines, neutrophil- and Th17-related factors highly associated with intestinal disease. In acute colitis, discriminatory disease-associated serum factors were not those identified in the colon. In contrast, the discriminatory predictive serum factors for chronic colitis were neutrophil- and Th17-related factors (KC, IL-12/23p40, IL-17, G-CSF, and chlorotyrosine) that were also elevated in colon tissue. Chronic colitis serum biomarkers were specific to chronic colitis as they were not discriminatory for acute colitis.Conclusions/SignificanceImmunological profiling revealed strikingly similar colon profiles, yet distinctly different serum profiles for acute and chronic colitis. Neutrophil- and Th17-related factors were identified as predictive serum biomarkers of chronic colitis, but not acute colitis, despite their presence in colitic tissue of both diseases thereby demonstrating the utility of mathematical modeling for identifying disease-associated serum biomarkers.

As a class of oligosaccharide chain-containing proteins, glycoproteins are of great value in screening and early diagnosis of malignant tumors and other major diseases. Herein, we report a universal boronate affinity-based electrochemical aptasensor for point-of-care glycoprotein detection. Aptasensing of glycoproteins involves the specific recognition and capture of target glycoproteins by end-tethered nucleic acid aptamers and the site-specific labeling of ferrocene tags via the phenylboronic acid (PBA)-based boronate affinity interactions because the cis-diol sites of oligosaccharide chains on glycoproteins can selectively react with the PBA receptor groups to form cyclic phenylborates in aqueous basic media. Due to the presence of hundreds to thousands of cis-diol sites on a glycoprotein, a large number of ferrocene tags can be recruited for the signal-on aptasensing of glycoproteins at a low-abundance level, eliminating the need for extra amplification strategies. As a result, the boronate affinity-based electrochemical aptasensor is highly sensitive and selective for glycoprotein detection and tolerant to the false-positive results. The detection limit for α-fetoprotein (AFP) is 0.037 ng/mL, with a linear response ranging from 0.1 to 100 ng/mL. In addition to the merits of simple operation, short assay time, and low detection cost, the aptasensor is applicable to the detection of glycoproteins in serum samples and the point-of-care detection using disposable flexible electrodes. Overall, this work provides a universal and promising platform for the point-of-care detection of glycoproteins, holding great potential in screening and early diagnosis of glycoprotein-related malignant tumors and other major diseases.

Air meatography

Pseudomyxoma Originating from the Interatrial Septum in a Heart Transplant Patient

Most tissues may become significantly stiffer than their normal states when there are lesions inside. The tissue's modulus can then act as an identification parameter for clinic diagnosis of tumors or fibrosis, which leads to elastography. This study introduces a novel elastography method that can be used for modulus imaging of superficial organs. This method is based on the scanning contact-resonance of a unimorph piezoelectric cantilever. The cantilever vibrates in its bending mode with the tip pressed tightly on the sample. The contact resonance frequency of the cantilever-sample system is tracked at each scanning point, from which the sample's modulus can be derived based on a beam dynamic model and a contact mechanics model. Scanning is performed by a three-dimensional motorized stage and the whole system is controlled by a homemade software program based on LabVIEW. Testing on in vitro beef tissues indicates that the fat and the muscle can be easily distinguished using this system, and the accuracy of the modulus measurement can be comparable with that of nanoindentation. Imaging on homemade gelatin phantoms shows that the depth information of the abnormalities can be qualitatively obtained by varying the pressing force. The detection limit of this elastography method is specially examined both experimentally and numerically. Results show that it can detect the typical lesions in superficial organs with the depth of several centimeters. The lateral resolution of this elastography method∕system is better than 0.5 mm, and could be further enhanced by using more scanning points. The proposed elastography system can be regarded as a sensitive palpation robot, which may be very promising in early diagnosis of tumors in superficial organs such as breast and thyroid.

Simple SummaryCanine mammary tumors (CMTs) are the most common neoplasms in female dogs, and their high rate of recurrence and metastasis result in a poor prognosis; therefore, timely and effective diagnosis is essential. In this study, the tumors were identified by histopathology and combined with X-ray and ultrasonography to assess the presence of organ metastases. Changes in certain indicators that suggested multiple direct or paraneoplastic changes associated with tumors were detected/suspected by hematological examination. Enzyme-linked immunosorbent assay (ELISA) revealed that HER-2 serum concentrations were significantly different between healthy dogs and dogs with malignant tumors. mRNA expression of HER-2, E-cadherin, N-cadherin, Vimentin, CEA, CA15-3 and SF were measured in CMT tissues by qPCR. The expression of these tumor markers (except for E-cadherin) in the malignant tumor group was significantly higher than in the benign group and the healthy control group (p < 0.05), however, there were no significant differences between the benign mammary tumor group and the healthy control group (p > 0.05). Measurement of biomarkers in dogs by serological and molecular biological assays represents a milestone in the early diagnosis of tumors, assessment of disease progression and response to chemotherapy.Canine mammary tumors (CMTs) are one of the most common tumors in female dogs, and they are associated with a poor prognosis owing to their high rate of recurrence and metastasis rates, which make their diagnosis especially important in clinical veterinary medicine. In this study, the characteristics of tumors were observed in dogs suffering from CMTs, and clinical diagnosis and histopathology were used to identify tumors. Furthermore, the expression levels of tumor markers for CMTs were analyzed by enzyme-linked immunosorbent assay (ELISA) and quantitative PCR (qPCR). Upon clinical examination, dogs with CMTs displayed a distinct and irregular mass in the mammary gland, and X-ray (Latero-lateral and ventro-dorsal views) and ultrasonography of the abdomen revealed a moderately echogenic mass at the mammary gland with slightly stronger density than the surrounding tissue. A total of 30 tumors were identified by histopathology, 11 benign and 19 malignant. Changes in some indicators in dogs suffering from CMTs and healthy dogs suggested that there were multiple direct or paraneoplastic changes associated with tumors that could be detected/suspected by hematological examination, and ELISA revealed the HER-2 serum concentrations were significantly different between healthy animals and those with malignant tumors. qPCR indicated that tumor markers N-cadherin, Vimentin, HER-2, CEA, CA15-3 and SF were higher in dogs with malignant tumors than healthy dogs, with a low level of E-cadherin in malignant tumors. This study verified that serological tests and molecular biological tests were essential to the early diagnosis, treatment and prognosis of dogs with tumors.

Accurate diagnosis of cancer at an early stage is the key to reduce cancer mortality and improve survival. PET imaging has high sensitivity but low spatial resolution, while CT imaging has good spatial location information. Therefore, the combination of PET and CT imaging can provide complementary advantages to achieve accurate early diagnosis of tumors. However, currently developed PET or CT imaging agents have only a single function. Here, we designed and constructed a self-assembled lipid nanocapsule encapsulated with iodixanol and labeled with self-chelated 64Cu for precise PET/CT imaging of tiny lung tumor. The lipid nanocapsule self-assembled in water using LPPC-Ce6, a conjugate of chlorin e6 (Ce6) and lysophosphatidylcholine (LPPC), to form a bilayer vesicular structure. 64Cu was embedded in the center of the tetrapyrrole ring of Ce6 by natural capture ability for Cu2+ ions. GLT21.T, the aptamer targeting lung cancer, was conjugated to the surface of the lipid nanocapsules. Iodixanol was loaded into the cavity of the lipid nanocapsule (64Cu@LCI-apt). In the nanostructure, the loading of iodixanol was sufficiently high, and the specific activity could be flexibly adjusted according to imaging requirements. The prepared 64Cu@LCI-apt achieves excellent radiolabeling efficiency, stability and effective targeting of lung tumor. In an early orthotopic lung cancer model, 64Cu@LCI-apt demonstrated the capabilities of sensitive PET imaging and enhanced contrast CT imaging to enable efficient high-quality PTE/CT imaging of tiny orthotopic lung tumor with a diameter of 500 μm. 64Cu@LCI-apt has great potential for early, sensitive, and accurate diagnosis of tumors through dual-mode PET/CT imaging.