Perioperative Changes in Serum Transaminases Levels Predicts Long-Term Survival Following Liver Resection of Hepatocellular Carcinoma.

Background: We sought to define whether and how hepatic ischemia/reperfusion (I/R) as manifested by perioperative aspartate aminotransferase (AST) and alanine aminotransaminase (ALT) levels impact long-term outcomes after curative-intent resection of hepatocellular carcinoma (HCC).

Patients And Methods: Intrasplenic injection of HCC cells was used to establish a murine model of HCC recurrence with versus without I/R injury. Patients who underwent curative resection for HCC were identified from a multi-institutional derivative cohort (DC) and separate external validation (VC) cohort.

Dysfunctional mechanotransduction regulates the progression of PIK3CA-driven vascular malformations.

Somatic activating mutations in are common drivers of vascular and lymphatic malformations. Despite common biophysical signatures of tissues susceptible to lesion formation, including compliant extracellular matrix and low rates of perfusion, lesions vary in clinical presentation from localized cystic dilatation to diffuse and infiltrative vascular dysplasia. The mechanisms driving the differences in disease severity and variability in clinical presentation and the role of the biophysical microenvironment in potentiating progression are poorly understood.

Perioperative Changes in Serum Transaminase Levels: Impact on Postoperative Morbidity Following Liver Resection of Hepatocellular Carcinoma.

Objectives: To define how dynamic changes in pre- versus post-operative serum aspartate aminotransferase (AST) and alanine aminotransaminase (ALT) levels may impact postoperative morbidity after curative-intent resection of hepatocellular carcinoma (HCC).

Background: Hepatic ischemia/reperfusion can occur at the time of liver resection and may be associated with adverse outcomes following liver resection.

Methods: Patients who underwent curative resection for HCC between 2010-2020 were identified from an international multi-institutional database.

Donor-Derived Engineered Microvessels for Cardiovascular Risk Stratification of Patients with Kidney Failure.

Cardiovascular disease is the cause of death in ≈50% of hemodialysis patients. Accumulation of uremic solutes in systemic circulation is thought to be a key driver of the endothelial dysfunction that underlies elevated cardiovascular events. A challenge in understanding the mechanisms relating chronic kidney disease to cardiovascular disease is the lack of in vitro models that allow screening of the effects of the uremic environment on the endothelium.

A facile fluid pressure system reveals differential cellular response to interstitial pressure gradients and flow.

Interstitial fluid pressure gradients and interstitial flow have been shown to drive morphogenic processes that shape tissues and influence progression of diseases including cancer. The advent of porous media microfluidic approaches has enabled investigation of the cellular response to interstitial flow, but questions remain as to the critical biophysical and biochemical signals imparted by interstitial fluid pressure gradients and resulting flow on resident cells and extracellular matrix (ECM). Here, we introduce a low-cost method to maintain physiological interstitial fluid pressures that is built from commonly accessible laboratory equipment, including a laser pointer, camera, Arduino board, and a commercially available linear actuator.

Advances in nucleic acid amplification techniques (NAATs): COVID-19 point-of-care diagnostics as an example.

Achieving superhigh sensitivity is the ultimate goal for bio-detection in modern analytical science and life science. Among variable signal amplification strategies, nucleic acid amplification technologies are revolutionizing the field of bio-detection, providing greater possibilities in novel diagnosis achieving high efficiency, specificity, and cost-effectiveness. Nucleic acid amplification techniques (NAATs), such as Polymerase Chain Reaction (PCR), Rolling Circle Amplification (RCA), Loop-Mediated Isothermal Amplification (LAMP), Recombinase Polymerase Amplification (RPA), CRISPR-related amplification, and others are dominating methods employed in research and clinical settings.

[Expressions of aromatase protein and sex hormone receptor in endometrial lesions].

Objective: To investigate the expression of aromatase protein, estrogen receptor (ER), progesterone receptor (PR) and nuclear antigen associated with cell proliferation Ki67 in endometrial diseases and their clinical significance in diagnosis and endocrine therapy of endometrial diseases.

Method: Expressions of aromatase, ER, PR and Ki-67 were detected with immunohistochemistry technic (streptavidin-peroxidase-biotin, SP) in 148 cases including 30 of endometrial hyperplasia, 30 of atypical proliferation and 88 of endometrial adenocarcinoma as observational group and 15 cases of proliferative endometrium and 15 cases of secretory endometrium as control group.

Results: Expression of aromatase protein and ER, PR, Ki67 in endometrial hyperplasia, atypical proliferation had no significant difference comparing with the proliferative endometrium group (P > 0.

[Study of tissue morphology and vascular endothelial growth factor and matrix metalloproteinase-9 gene expressions in nude mouse endometriosis model].

Objective: To establish an experimental endometriosis model using nude mouse as a xenographic host for relative biological behavior study of endometriosis.

Methods: Nude mice of experimental group were implanted with the late secretory endometrium of patients with endometriosis (n = 24) or without endometriosis (n = 24) into pelvic and abdominal cavities. Nude mice of control group (n = 3) were implanted with the greater omentum.