Preparation and anti-cancer activity of transferrin/folic acid double-targeted graphene oxide drug delivery system

In this study, a transferrin/folic acid double-targeting graphene oxide drug delivery system loaded with doxorubicin was designed. Graphene oxide was prepared by ultrasound improved Hummers method and was modified with Pluronic F68, folic acid, and transferrin to decrease its toxicity and to allow dual-targeting. The results show that the double target drug delivery system (TFGP*DOX) has good and controllable drug delivery performance with no toxicity. Moreover, TFGP*DOX has a better inhibitory effect on SMMC-7721 cells than does a single target drug delivery system (FGP*DOX). The results of drug release analysis and cell inhibition studies showed that TFGP*DOX has a good sustained release function that can reduce the drug release rate in blood circulation over time and improve the local drug concentration in or near a targeted tumor. Therefore, the drug loading system (TFGP*DOX) has potential application value in the treatment of hepatocellular carcinoma.

Lung Resection for Trauma: A Propensity Score Adjusted Analysis Comparing Wedge Resection, Lobectomy, and Pneumonectomy

The resection of lung parenchyma for thoracic trauma is uncommon. Different surgical procedures with a wide range of complexities have been described depending on the severity of trauma and the presence of associated injuries. The aim of this study was to analyze outcomes of wedge resection, lobectomy, and pneumonectomy. Data for this study were obtained from an eight-year retrospective National Trauma Data Bank study (2007–2015). Adult patients who sustained severe chest trauma (Abbreviated Injury Scale > 3) that required any type of lung resection were included. Propensity score (PS) analysis was adopted. Overall, 3107 patients were included. Wedge resection was performed in 54.3 per cent, lobectomy in 38.2 per cent, and pneumonectomy in 7.5 per cent of patients. Longer in-hospital length of stay ( P = 0.01), ICU length of stay ( P = 0.002), and mechanical ventilation days ( P = 0.038) were found in case of major resections. The overall morbidity and mortality were 32 per cent and 27.5 per cent, respectively. A stepwise increase in mortality occurred when comparing wedge (20.3%), lobectomy (30.8%), and pneumonectomy (63.4%) ( P < 0.001). After PS analysis, lobectomy and pneumonectomy were associated with higher mortality compared with wedge resection (odds ratio [OR] 1.42; 95% confidence interval 1.26–1.71 and OR 4.16; 95% confidence interval 2.84–6.07, respectively). Similarly, after PS analysis, lobectomy and pneumonectomy were associated with higher overall complications compared with wedge resection (OR 1.21 and OR 1.56, respectively). Comparable results were found in the subgroup analysis of patients with isolated lung injury. After PS matching, lobectomy and pneumonectomy were associated with significantly higher morbidity and mortality compared with nonanatomical wedge resection.

Centralization impact and cost-saving study in a Moroccan hospital’s centralized unit of chemotherapy preparation

Purpose

The purpose of this study was to assess the cost saved and the amount of drug wasted when compounding anticancer drugs in the centralized unit for chemotherapy preparation. A secondary objective was to estimate the centralization impact of activities related to the preparation of chemotherapies.

Methods

This was a two-month, single-centre, prospective study conducted at the National Oncology Institute in Rabat. The cost saved and the amount of drug wasted were calculated using a standardized data collection sheet (the prescribed dose, the amount of drug deployed, the amount remaining after compounding, the amount of drug saved and the drug wastage). The centralization impact was calculated using the amount of drug wasted in the centralized unit for chemotherapy preparation and a theoretical amount of drug wasted without centralization of preparation.

Results

During the study period, the total amount of drug saved was 249,959.5 mg (7.2% of drug used), which represented 96,657 USD. The amount of drug wasted was 89,290.5 mg or 42275.5 USD. The drug waste per dilution and per drug was 6.4 mg [1.6-16.1]. While the potential savings over one year (580,000 USD) reached 13.9% of the cytostatic drugs budget for 2018, the potential drug waste cost reached 6.1%. The centralization impact is estimated at an average of 79.5% ± 13.7% waste reduction.

Conclusion

The outcome of our study showed that the grouping of prescriptions in centralized unit for chemotherapy preparation could result in significant savings on the amount of drugs deployed. The centralization of cytostatic preparations is of economic interest.

Application of photodynamic therapy drugs for management of glioma

Human gliomas are one of the most prevalent and challenging-to-treat adult brain tumors, and thus result in high morbidity and mortality rates worldwide. Current research and treatments of gliomas include surgery associated with conventional chemotherapy, use of biologicals, radiotherapy, and medical device applications. The selected treatment options are often guided by the category and aggressiveness of this deadly disease and the patient’s conditions. However, the effectiveness of these approaches is still limited due to poor drug efficacy (including delivery to desired sites), undesirable side effects, and high costs associated with therapies. In addition, the degree of leakiness of the blood–brain barrier (BBB) that regulates trafficking of molecules in and out of the brain also modulates accumulation of adequate drug levels to tumor sites. Active research is being pursued to overcome these limitations to obtain a superior therapeutic index and enhanced patient survival. One area of development in this direction focuses on the localized application of photodynamic therapy (PDT) drugs to cure brain cancers. PDT molecules potentially utilize multiple pathways based on their ability to generate reactive oxygen species (ROS) upon photoactivation by a suitable light source. In this communication, we have attempted to provide a brief overview of PDT and cancer, photoactivation pathways, mechanism of tumor destruction, effect of PDT on tumor cell viability, immune activation, various research attempted by applying PDT in combination with novel strategies to treat glioma, role of BBB and clinical status of PDT therapy for glioma treatment.

Mitochondria-targeted porphyrin-based photosensitizers containing triphenylphosphonium cations showing efficient in vitro photodynamic therapy effects

Subcellular organelle-targeted photosensitizers have recently reported to be effective photodynamic therapy (PDT) agents. In this work, three porphyrin-derived photosensitizers, containing one, two or four triphenylphosphonium targeting groups, were synthesized and characterized by NMR, HRMS, UV-vis and fluorescence spectroscopy. These photosensitizers showed similar photophysical properties to classical porphyrins and exhibited excellent [Formula: see text]O[Formula: see text] quantum yields in acetonitrile. Subcellular colocalization indicated that all three photosensitizers specifically stain the mitochondria of HeLa cells. Photosensitizer mito-dp, containing two triphenylphosphonium cations was found to be the most uptaken by cells and exhibited the best PDT effect with an effective phototoxicity (IC[Formula: see text] (light) [Formula: see text] 12.4 nM), suggestive of a higher practicable potential of mitochondria-targeted PDT agents in cancer therapy.

Hypodermoclysis as a Strategy for Patients With End-of-Life Cancer in Home Care Settings

Background:

The increase in the elderly population associated with a higher incidence of cancer strongly endorses palliative care (PC). Hypodermoclysis (HDC) is a feasible technique for drugs and fluids delivery at the home care setting.

Objectives:

To assess the use and benefits of HDC in patients with end-of-life cancer assisted by a single home-based palliative care program (HPCP) in Belo Horizonte, Brazil.

Methods:

This was a retrospective study that analyzed medical charts from patients with end-of-life cancer who were assisted by an HPCP in a 1-year period of time.

Results:

A total of 333 patients, 81.7% with advanced cancer, were included. The most frequent symptoms were fatigue (44.4%) and pain (43.2%). Hypodermoclysis was used in 77.5% of the patients for the administration of fluids or medicines. Continuous palliative sedation was applied to 70.5% of patients. The place of death was home for 90.2% of the patients.

Conclusion:

Receiving home care assistance with palliative intention may decrease the need for dying patients with cancer to visit emergency units, as their symptoms were well controlled. Hypodermoclysis was a safe and effective alternative for hydration and drug delivery when provided and supervised by an experienced team. The place of death is a reliable indicator of the quality of death, and, in this study, the HPCP allowed patients to die at home with their families. It is essential for PC professionals to understand the impact of HDC use at home care setting for patients with end-of-life cancer allowing the increase of quality of death indicators.

Cocrystallization of 5-fluorouracil and l-phenylalanine: the first zwitterionic cocrystal of 5-fluorouracil with amino acid exhibiting perfect in vitro/vivo pharmaceutical properties

The first zwitterionic cocrystal of 5-fluorouracil with amino acid has been prepared and its structure and in vitro/vivo properties have been systematically studied.

Prediagnostic dietary intakes of vitamin A and β-carotene are associated with hepatocellular-carcinoma survival

Vitamin A and its precursor (β-carotene) have been linked with cancer incidence and mortality.

Recent advances of nanomedicines for liver cancer therapy

This review highlights recent advancements in nanomedicines for liver cancer therapy.

Design, synthesis, and anti-proliferative evaluation of 1H-1,2,3-triazole grafted tetrahydro-β-carboline-chalcone/ferrocenylchalcone conjugates in estrogen responsive and triple negative breast cancer cells

A series of 1H-1,2,3 triazole grafted tetrahydro-β-carboline-chalcone/ferrocenylchalcone conjugates were synthesized and in vitro evaluated against estrogen responsive (MCF-7) and triple negative (MDA-MB-231) breast cancer cells.

Synthesis and antiproliferative activity of benzimidazole-based, trinuclear neutral cyclometallated and cationic, N^N-chelated ruthenium(ii) complexes

A series of 2-phenyl and 2-pyridyl tris-benzimidazole ligands was reacted with the [Ru(p-cymene)Cl₂]₂ dimer to yield the corresponding neutral cyclometallated and cationic trinuclear organoruthenium(ii) complexes.

Recent progress of therapeutic peptide based nanomaterials: from synthesis and self-assembly to cancer treatment

This review has described the synthesis, self-assembly and the anti-cancer application of therapeutic peptides and their conjugates, particularly polymer–peptide conjugates (PPCs).

Synthesis of the first 2-hydroxyanthraquinone substituted cyclotriphosphazenes and their cytotoxic properties

New 2-hydroxyanthraquinone based cyclotriphosphazenes were prepared and their cytotoxic effects were investigated in MCF-7 (breast cancer), MCF-12A (normal breast epithelium), DLD-1 (colon cancer), and CD-18Co (normal colon epithelium) cell lines.

Advances in local and systemic drug delivery systems for post-surgical cancer treatment

Graphical representation of local and systemic drug delivery systems.

Synthetic copolymer conjugates of docetaxel and in vitro assessment of anticancer efficacy

Docetaxel (DTX) is a widely used chemotherapy drug that is associated with numerous side effects and limited bioavailability. We show synthetic copolymer conjugates of docetaxel with drug loading up to 20% and assess their efficacy in MCF-7 cells.

Responsive agarose hydrogel incorporated with natural humic acid and MnO2nanoparticles for effective relief of tumor hypoxia and enhanced photo-induced tumor therapy

In spite of widespread applications of nano-photosensitizers, poor tumor penetration and severe hypoxia in the tumor microenvironment (TME) always result in an undesirable therapeutic outcome of photodynamic therapy (PDT).

A jaboticaba extract prevents prostatic damage associated with aging and high-fat diet intake

Jaboticaba extract prevented the prostatic lesion development in aging and/or overweight mice, mainly interfering in cell proliferation, hormonal and angiogenesis pathways.

Octahedral copper(ii)-diimine complexes of triethylenetetramine: effect of stereochemical fluxionality and ligand hydrophobicity on CuII/CuIredox, DNA binding and cleavage, cytotoxicity and apoptosis-inducing ability

Stereochemical fluxionality of octahedral [Cu(trien)(diimine)]²⁺complexes determines the Cu^II/Cu^Iredox potential, DNA binding affinity, ROS generation, cytotoxicity and apoptosis-inducing ability.

A comprehensive analysis of subclass-specific IgG glycosylation in colorectal cancer progression by nanoLC-MS/MS

Colorectal cancer is associated with changed IgG glycosylation, but the alteration in specific subclasses of IgG is unknown.

Interaction energies between two antiandrogenic and one androgenic agonist receptor in the presence of a T877A mutation in prostate cancer: a quantum chemistry analysis

We provide a detailed picture of the interactions between the androgen receptor T877A mutation and three different compounds used in the treatment of prostate cancer.

Antitumor effects of novel nickel–hydrazone complexes in lung cancer cells

Two novel nickel(ii) complexes [NiL^I]·CH₃CN (1·CH₃CN) and [Ni(H₂L^II)(NCS)₂]·0.5H₂O (2·0.5H₂O) were fabricated and in in vitro experiments they both showed the dose dependent cytotoxicity and killed A549 lung cancer cells via an apoptotic pathway.

Methotrexate–Mn2+ based nanoscale coordination polymers as a theranostic nanoplatform for MRI guided chemotherapy

Methotrexate–Mn²⁺ based NCPs with uniform size and easy fabrication exhibited good MRI and excellent antitumor effects as a novel theranostic nanoplatform.

Synthesis of hydrophobically modified berberine derivatives with high anticancer activity through modulation of the MAPK pathway

Linoleic acid-modified berberine derivative induces apoptosis of A549 cells and affects the expression of proteins associated with the MAPK pathway.

Frequency and histological-cytological correlation of premalignant and malignant changes in the cervix in women of different ages

Introduction: Cervical cancer is the fourth most common and accounts for about 6.6% of all cancers in women. Aim: The aim was to determine the frequency of premalignant and malignant changes in the cervix, to examine the histological-cytological correlation of premalignant and malignant changes in the cervix and the correlation of the women's age with the stage of cervical disease. Material and Methods: A retrospective study analyzed 186 cervical biopsy specimens and cervical smears (Papanicolau test) at the Institute of Pathology of the Faculty of Medicine in Pristina, based in Kosovska Mitrovica, over a three-year period from 2016 to 2018. Results: Of the 186 subjects, 62 had mild premalignant changes of type LSIL, 22 HSIL, and as many as 20 (10.75%) cervical cancer. There was a statistically significant positive association between histological and cytological findings (r = 0.854; p <0.001). There was a statistically significant difference in the age of the subjects with regard to histological findings (F = 11,327; p <0.001). Subjects with HSIL were significantly older than those diagnosed with cervicitis chronica (p = 0.029). Subjects diagnosed with planocellular carcinoma were significantly older than women with cervicitis chronica (p <0.001) and LSIL (p <0.001). Conclusion: There is an increasing trend of cervical cancer in Northern Kosovo and in the Serbian enclaves in central Kosovo and Metohija. Subjects with cervical cancer were significantly older than subjects with mild premalignant cervical changes. There is a significant histologic-cytological correlation of cervical findings, so we believe that more massive cervical screening, especially in younger women, could reduce the incidence of premalignant and malignant diseases of the cervix.

Molecular and nanoengineering approaches towards activatable cancer immunotherapy

This review summarizes the development of activatable immunotherapeutic nanoagents that activate antitumor immunity only in response to internal or external stimuli, which potentially enhance patient response rates while reducing immune-related adverse events during cancer immunotherapy.

Zinc oxide nanoparticles for therapeutic purposes in cancer medicine

Zinc oxide nanoparticles are characterized by a good biocompatibility while providing a versatile potential as innovative therapeutic agents in cancer medicine.

The Wonderful World of Poo: The Turdome and Beyond

Defecate: it is something we all do, it is something we joke about, yet for many in real life it is a subject that is taboo. However, it is now being realised that faeces are a veritable scientific goldmine, have many potential uses, and may even save your life! In this article I will review the history behind the use of faecal material and look at some of its emerging playing fields, in particular its role in medical diagnosis. I will discuss faecal proteomics and other omics technologies (Proteogenomics: The Omics Pipeline), including studies on the microbiome, in order to understand, diagnose, and treat gastrointestinal tract pathologies and other diseases, and show how these technologies will play a role in the move towards personalized medicine.

Natural polysaccharides with different conformations: extraction, structure and anti-tumor activity

Natural polysaccharides as sustainable polymers are rich sources with good biological safety and various biological functions, which are important research topics in the fields of food and medicine.

Study on chemopreventive effects of raw and roasted β-glucan-rich waxy winter barley using an in vitro human colon digestion model

Fermentation supernatants of barley flakes exhibit chemopreventive effects in LT97 colon adenoma cells without impact of roasting.

Incidence Trends of Lip, Oral Cavity, and Pharyngeal Cancers: Global Burden of Disease 1990–2017

The worldwide incidence trends of the lip, oral cavity, and pharyngeal cancers (LOCPs) need to be updated. This study aims to examine the temporal incidence trends of LOCPs from 1990 to 2017, using the latest Global Burden of Disease (GBD) study data to explore sex, age, and regional differences. GBD incidence data for LOCPs were driven by population cancer registries and were estimated from mortality data. Age-standardized incidence rates (ASIRs) were directly extracted from the 2017 GBD database to calculate the estimated annual percentage change (EAPC) over the study period. Incidence trends are mapped and compared separately by sex (females vs. males), age groups (15–49, 50–69, and 70+ y), regions (21 geographical and 5 sociodemographic regions), and countries. Among 678,900 incident cases of LOCPs notified in 2017, more than half were lip and oral cavity cancers. From 1990 to 2017, the estimated global incidence for nasopharyngeal cancers decreased dramatically (EAPC = −1.52; 95% confidence interval [CI], –1.70 to −1.34), while the incidence for lip and oral cavity cancers (EAPC = 0.26; 95% CI, 0.16–0.37) and other pharyngeal cancers (EAPC = 0.62; 95% CI, 0.54–0.71) increased. Higher ASIRs were observed among males than females across all age groups. However, females had larger EAPC variation when compared to males. Population groups aged 15 to 49 y presented the lowest ASIRs, with larger values of EAPC than those aged 50 to 69 and 70+ y. While high-income countries had higher ASIRs with little EAPC variation, ASIRs varied across low/middle-income regions with larger EAPC variations. South Asia and East Asia had the highest ASIRs and EAPC for lip and oral cavity cancers, respectively. In conclusion, the global incidence of LOCPs has increased among females, those aged 15 to 49 y, and people from low/middle-income countries over the study period, excepting nasopharyngeal cancers, which had a decreasing worldwide trend.

Educación en Colombia para la detección temprana del cáncer de mama

Introducción. El cáncer de mama representa un problema de salud pública cada vez mayor en Colombia. La mayoría de los estudiantes de medicina y de los profesionales de la salud no reciben capacitación para la detección temprana del cáncer de mama. Objetivo. Describir el proceso llevado a cabo por el Instituto Nacional de Cancerología de Colombia, para capacitar a los profesionales de la salud (médicos generales, ginecólogos, médicos familiares y enfermeras) en la detección temprana del cáncer de mama, mediante cursos presenciales y virtuales. Resultados. Con las dos modalidades de cursos, 1.875 profesionales de la salud han sido capacitados, la mayoría de ellos mediante el curso virtual (n=1.294; 73,0 %). Asimismo, los médicos generales han sido los profesionales que más se han certificado mediante alguna de las dos modalidades del curso (n=919; 49,0 %). Los dos cursos generan gran satisfacción en los participantes, con una tasa de certificación del 100 % en la modalidad presencial y del 73,0 % en la virtual. Conclusiones. Es difícil medir el impacto de la capacitación profesional en el diagnóstico precoz del cáncer de mama, porque la mayoría de las regiones de Colombia no tienen registros de cáncer. Es probable que, con un tiempo mayor de seguimiento, se logre medir el impacto real de los cursos en la detección temprana del cáncer de mama y, por ende, en la mortalidad debida a la enfermedad.