The Dynamics of Tectonic Modelling of Some Caves in the Karst Region (Croatia)

Deformational processes resulted in the formation of certain caves in the carbonate rocks of the karst area are analysed. Some of the caves were formed by deformational processes connected to extension of the area, while others were formed by processes that followed compression during structural formation of the Dinarides. In the first case, the caves were infilled by calcite material and/or by debris from the surrounding rocks mixed with terra rossa. The second group is mostly represented by caves forming open spelaeological objects

Jabuka Shoal, a New Location with Igneous Rocks in the Adriatic Sea

Petrographic and XRF analyses of the magmatic rock from Jabuka Shoal, 2300 m west of Jabuka Islet (central Adriatic Sea) revealed that the rock is gabbro. This new location of magmatic rocks in the Adriatic confirms their linear arrangement, and indicates the presence of an important fault line which predisposed the occurrences of magmatic rocks

Gas hydrate on the northern Cascadia margin: regional geophysics and structural framework

Integrated Ocean Drilling Program Expedition 311 is based on extensive site survey data and historic research at the northern Cascadia margin since 1985. This research includes various regional geophysical surveys using a broad spectrum of seismic techniques, coring and logging by the Ocean Drilling Program Leg 146, heat flow measurements, shallow piston coring, and bottom video observations across a cold-vent field, as well as novel controlled-source electromagnetic and seafloor compliance surveying techniques. The wealth of data available allowed construction of structural cross-sections of the margin, development of models for the formation of gas hydrate in an accretionary prism, and estimation of gas hydrate and free gas concentrations. Expedition 311 established for the first time a transect of drill sites across the northern Cascadia margin to study the evolution of gas hydrate formation over the entire gas hydrate stability field of the accretionary complex. This paper reviews the tectonic framework at the northern Cascadia margin and summarizes the scientific studies that led to the drilling objectives of Expedition 311 Cascadia gas hydrate

3D Bioprinted Human Skeletal Muscle Constructs for Muscle Function Restoration

A bioengineered skeletal muscle tissue as an alternative for autologous tissue flaps, which mimics the structural and functional characteristics of the native tissue, is needed for reconstructive surgery. Rapid progress in the cell-based tissue engineering principle has enabled in vitro creation of cellularized muscle-like constructs; however, the current fabrication methods are still limited to build a three-dimensional (3D) muscle construct with a highly viable, organized cellular structure with the potential for a future human trial. Here, we applied 3D bioprinting strategy to fabricate an implantable, bioengineered skeletal muscle tissue composed of human primary muscle progenitor cells (hMPCs). The bioprinted skeletal muscle tissue showed a highly organized multi-layered muscle bundle made by viable, densely packed, and aligned myofiber-like structures. Our in vivo study presented that the bioprinted muscle constructs reached 82% of functional recovery in a rodent model of tibialis anterior (TA) muscle defect at 8 weeks of post-implantation. In addition, histological and immunohistological examinations indicated that the bioprinted muscle constructs were well integrated with host vascular and neural networks. We demonstrated the potential of the use of the 3D bioprinted skeletal muscle with a spatially organized structure that can reconstruct the extensive muscle defects

Investigating porcine parvoviruses genogroup 2 infection using in situ polymerase chain reaction

Abstract Background Porcine parvovirus 2 (PPV2) was detected in swine serum without showing any relationship with disease. The emergence of the virus seemed to be a unique event until other genetically highly similar parvoviruses were identified in China and, later in 2012, the presence of the virus was also described in Europe. PPV2 is widely distributed in pig populations where it is suspected to be involved in respiratory conditions, based on its frequent detection in lung samples. In order to investigate the potential pathogenic involvement of PPV2, 60 dead pigs were examined from two farms. They were necropsied and tested for PPV2 and PCV2 (Porcine circovirus type 2) by PCR; by Brown and Brenn (B&B) staining for bacteria; by immunohistochemistry (IHC) to detect CD3, Swine leukocyte antigen class II DQ (SLAIIDQ), lysozyme, porcine reproductive and respiratory syndrome virus (PRRSV), swine influenza (SIV), Mycoplasma hyopneumoniae (Mhyo); and by in situ hybridization (ISH) to detect ssDNA and dsDNA of PCV2. PPV2 positive samples were subjected to in situ polymerase chain reaction (IS-PCR) including double staining method to detect PPV2 and host cell markers. To calculate statistical difference we used GENMOD or LOGISTIC procedures in Statistical Analysis System (SAS®). Results We found that the PPV2 was localized mostly in lymphocytes in lungs, lymph nodes and liver. Neither CD3 antigen nor lysozyme was expressed by these infected cells. In contrast, low levels of SLAIIDQ were expressed by infected cells, suggesting that PPV2 may have a specific tropism for immature B lymphocytes and/or NK lymphocytes though possibly not T lymphocytes. Conclusion The overall conclusion of this study indicates that PPV2 may contribute to the pathogenesis of pneumonia

Atrial fibrillation in a patient with lung cancer: a case report

Introduction. Cancer remains one of the most common causes of death in the world, second only to cardiovascular diseases. The use of novel chemotherapeutic and targeted agents has significantly improved the prognosis of this group of patients. However, this significantly increased the number of cardiotoxic complications of anticancer therapy, including arrhythmias, in particular atrial fibrillation (AF), which negatively affects the prognosis.Brief description. The purpose of this article was to describe the case of a 64-yearold woman with central right lung lower lobe cancer. Upon admission to the chemotherapy department, the patient was first diagnosed with paroxysmal AF. After chemical cardioversion, the first course of multiagent chemotherapy (MAC) was performed as follows: paclitaxel 280 mg and carboplatin 450 mg, which was complicated by the development of recurrent AF episode. During subsequent MAC courses, arrhythmia episodes regularly occurred. During the next AF episode, the patient was hospitalized at the City Clinical Hospital № 51, where she died despite intensive therapy. Postmortem examination ruled out tumor invasion into the left atrium.Discussion. For the AF development, the patient had prerequisites in the form of a significantly remodeled left atrial myocardium. Chemotherapy agents used as antitumor therapy are characterized by the common development of cardiotoxicity, including variety of arrhythmias. The occurrence of AF episodes coincided with the course of MAC, which suggested its cardiotoxic manifestations. Postmortem examination confirmed the high probability of an association between AF episodes and MAC.Conclusion. The presented case illustrates the difficulties encountered by oncologists and cardiologists in determining the genesis and treatment of complex arrhythmias in cancer patients