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https://www.readbyqxmd.com/read/29790738/design-and-development-of-polysaccharide-doxorubicin-peptide-bioconjugates-for-dual-synergistic-effects-of-integrin-targeted-and-cell-penetrating-peptides-for-cancer-chemotherapy
#1
Alexandra A P Mansur, Sandhra Maria Carvalho, Zelia Ines Portela Lobato, Maria de Fátima Leite, Armando da Silva Cunha, Herman S Mansur
Polymer-drug conjugation is an attractive approach for target delivering insoluble and highly toxic drugs to tumor sites to overcome the side-effects caused by cancer chemotherapy. In this study we designed and synthesized novel polymer-drug-peptide conjugates for improved specificity on targeting cancer cells. Chemically modified polysaccharide, carboxymethylcellulose (CMC), was conjugated with doxorubicin (DOX) anticancer drug by amide bonds and dually biofunctionalized with integrin-target receptor tripeptide (RGD) and L-arginine (R) as cell-penetrating amino acid for synergistic targeting and enhancing internalization by cancer cells...
May 23, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29785287/lymph-node-dissection-during-sublobar-resection-why-when-and-how
#2
REVIEW
Pascal-Alexandre Thomas
Appropriate lymph node (LN) assessment is a hallmark of surgical quality of curative intent operations for non-small cell lung cancer (NSCLC). Even in the era of extensive pre-treatment work-up including routine PET-scanning and brain imaging, and selective invasive LN evaluation, unexpected LN metastases are found at surgery in more than 10% of patients with a cT1aN0 tumor. Systematic lymphadenectomy minimizes the risk of leaving tumor-LN behind and thus the risk of an incomplete resection, and provides the most truthful pTNM, which is decisive in directing adjuvant chemotherapy...
April 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29785266/atypical-teratoid-rhabdoid-tumor-in-a-65-year-old-man-presenting-with-disseminated-leptomeningeal-disease-a-case-report-and-review-of-the-literature
#3
Marc-Alain Babi, Peter Fecci, Matthew Luedke, Olinda Pineda, Yasmin Ali O'Keefe
Central nervous system atypical teratoid rhabdoid tumors are very rare aggressive tumor of childhood, primarily occurring at age of less than 3 years old. The prognosis of these tumors is very poor, with a reported median survival of 6-12 months in most cases. Treatment typically consists of aggressive chemotherapy and radiotherapy. We present the case of a 65-year-old man who presented with progressive encephalopathy and change in personality over 3 months period. The patient had further accelerated decline over 3 weeks...
2018: SAGE Open Medical Case Reports
https://www.readbyqxmd.com/read/29781194/paraneoplastic-autoimmune-encephalitis-associated-with-pleomorphic-lung-carcinoma-an-autopsy-case-report
#4
Takashi Ando, Yoji Goto, Kazuo Mano, Fumio Nomura, Masako Kurashige, Masafumi Ito, Maya Mimuro, Yasushi Iwasaki, Masahisa Katsuno, Mari Yoshida
A 64-year-old man was admitted with acute onset disturbed consciousness. Cerebrospinal fluid analysis revealed pleocytosis and elevated protein, with negative cultures and PCR. Serum antibodies for autoimmune encephalitis were also negative. Brain magnetic resonance imaging (MRI) was unremarkable, but whole-body CT scan showed a tumor in the left lower lung lobe. Bronchial brush cytology demonstrated clusters of malignant cells, and 18 F-fluorodeoxyglucose positron emission tomography showed multiple lesions and increased uptake in the lung tumor...
May 20, 2018: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/29780941/unilateral-paraneoplastic-optic-disc-edema-and-retinal-periphlebitis-in-pineal-germinoma
#5
Gunay Uludag, Aslihan Onay, Sumru Onal
Purpose: To describe a unilateral ocular paraneoplastic syndrome in pineal germinoma. Observations: A 24-year-old male presented with diplopia, excessive thirst, and frequent urination. Cranial MRI showed a mass in pineal gland. Dorsal midbrain syndrome signs were present. Examination showed optic disc edema and segmental retinal periphlebitis in right and normal fundus in left eye. Rheumatologic work-up was negative. Brain biopsy confirmed pineal germinoma. Retinal findings were attributed to paraneoplastic syndrome...
June 2018: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29775808/phase-ii-study-of-maintenance-pembrolizumab-in-patients-with-extensive-stage-small-cell-lung-cancer-sclc
#6
Shirish M Gadgeel, Nathan A Pennell, Mary Jo Fidler, Balazs Halmos, Philip Bonomi, James Stevenson, Bryan Schneider, Ammar Sukari, Jaclyn Ventimiglia, Wei Chen, Cathy Galasso, Antoinette Wozniak, Julie Boerner, Gregory P Kalemkerian
PURPOSE: To assess the efficacy of maintenance pembrolizumab in extensive-stage small cell lung cancer (SCLC) patients, after treatment with platinum/etoposide. PATIENTS AND METHODS: Extensive-stage SCLC patients with a response or stable disease following induction chemotherapy were eligible. Pembrolizumab at a dose of 200 mg IV every 3 weeks was initiated within 8 weeks of the last cycle of chemotherapy. The primary endpoint of the study was progression-free survival (PFS) from study registration, with overall survival (OS) as a key secondary endpoint...
May 15, 2018: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/29775807/fir-efficacy-safety-and-biomarker-analysis-of-a-phase-ii-open-label-study-of-atezolizumab-in-pd-l1-selected-patients-with-non-small-cell-lung-cancer
#7
David R Spigel, Jamie E Chaft, Scott Gettinger, Bo H Chao, Luc Dirix, Peter Schmid, Laura Q M Chow, Rodney J Hicks, Larry Leon, Jill Fredrickson, Marcin Kowanetz, Alan Sandler, Roel Funke, Naiyer A Rizvi
INTRODUCTION: The FIR phase II study (NCT01846416) evaluated the efficacy and safety of anti-programmed death-ligand 1 (PD-L1) atezolizumab in advanced non-small-cell lung cancer (NSCLC) selected by tumor cell (TC) or tumor-infiltrating immune cell (IC) PD-L1 expression. METHODS: Patients with PD-L1 TC2/3 (PD-L1 staining on ≥5% of TC) or IC2/3 tumors (PD-L1 staining on ≥5% of IC; determined by SP142 PD-L1 immunohistochemistry assay) with paired fresh and archival histology samples were recruited into Cohort 1 (chemotherapy-naïve/>6 months between adjuvant chemotherapy and recurrence), Cohort 2 (≥ second-line without brain metastases), or Cohort 3 (≥ second-line with treated brain metastases)...
May 15, 2018: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/29774132/natural-products-a-hope-for-glioblastoma-patients
#8
REVIEW
Raghupathy Vengoji, Muzafar A Macha, Surinder K Batra, Nicole A Shonka
Glioblastoma (GBM) is one of the most aggressive malignant tumors with an overall dismal survival averaging one year despite multimodality therapeutic interventions including surgery, radiotherapy and concomitant and adjuvant chemotherapy. Few drugs are FDA approved for GBM, and the addition of temozolomide (TMZ) to standard therapy increases the median survival by only 2.5 months. Targeted therapy appeared promising in in vitro monolayer cultures, but disappointed in preclinical and clinical trials, partly due to the poor penetration of drugs through the blood brain barrier (BBB)...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29772621/-a-case-of-choroidal-and-brain-metastases-from-castration-resistant-prostate-cancer
#9
Shuko Yoneyama, Takahiko Watanabe, Tatsuaki Onuki, Kazuro Yabuki, Kotaro Suzuki
Choroidal and central nervous system metastases from prostate cancer are extremely rare. We report a case of choroidal and brain metastases from castration-resistant prostate cancer (CRPC). A 75-year-old male patient with metastatic CRPC presented with a 1-week history of a decrease in visual acuity in his left eye. An ophthalmoscopic examination revealed a choroidal tumor, 4 disc diameters across with serious retinal detachment. He was diagnosed with metastatic choroidal tumor from examination and patient's background...
April 2018: Hinyokika Kiyo. Acta Urologica Japonica
https://www.readbyqxmd.com/read/29771176/potential-use-of-cxcl12-cxcr4-and-sonic-hedgehog-pathways-as-therapeutic-targets-in-medulloblastoma
#10
Marla Karine Amarante, Glauco Akelinghton Freire Vitiello, Marcos Henrique Rosa, Igor Alves Mancilla, Maria Angelica Ehara Watanabe
Medulloblastoma (MB) is the most common malignant brain tumor occurring in children, and although high long-term survival rates have been reached with current therapeutic protocols, several neurological injuries are still observed among survivors. It has been shown that the development of MB is highly dependent on the microenvironment surrounding it and that the CXCL12 chemokine and its receptor, CXCR4 and the Sonic Hedgehog (SHH) pathway are crucial for cerebellar development, coordinating proliferation and migration of embryonic cells and malfunctions in these axes can lead to MB development...
May 17, 2018: Acta Oncologica
https://www.readbyqxmd.com/read/29764516/somatic-mutation-landscape-of-a-meningioma-and-its-pulmonary-metastasis
#11
Yaran Du, Ting Lu, Song Huang, Fangfang Ren, Gang Cui, Jian Chen
BACKGROUND: Extracranial metastasis (ENM) of meningiomas is extremely rare, and typically occurs several years after a primary tumor is diagnosed. However, the genetic changes underlying ENM events have not yet been investigated. CASE PRESENTATION: A 58-year-old male patient was sent to the emergency room of our hospital because of a sudden fall. Magnetic resonance imaging detected a mass at the right frontal sagittal sinus. He underwent tumor resection and recovered well, but post-operative computed tomography revealed three lumps on the right side of his chest...
May 4, 2018: Cancer communications
https://www.readbyqxmd.com/read/29761249/targeting-glioblastoma-derived-pericytes-improves-chemotherapeutic-outcome
#12
REVIEW
Daniel A P Guerra, Ana E Paiva, Isadora F G Sena, Patrick O Azevedo, Walison N Silva, Akiva Mintz, Alexander Birbrair
Glioblastoma is the most common malignant brain cancer in adults, with poor prognosis. The blood-brain barrier limits the arrival of several promising anti-glioblastoma drugs, and restricts the design of efficient therapies. Recently, by using state-of-the-art technologies, including thymidine kinase targeting system in combination with glioblastoma xenograft mouse models, it was revealed that targeting glioblastoma-derived pericytes improves chemotherapy efficiency. Strikingly, ibrutinib treatment enhances chemotherapeutic effectiveness, by targeting pericytes, improving blood-brain barrier permeability, and prolonging survival...
May 14, 2018: Angiogenesis
https://www.readbyqxmd.com/read/29758196/temozolomide-combined-with-pd-1-antibody-therapy-for-mouse-orthotopic-glioma-model
#13
Bailing Dai, Na Qi, Junchao Li, Guilong Zhang
PURPOSE: Temozolomide (TMZ) is the most frequent adjuvant chemotherapy drug in gliomas. PDL1 expresses on various tumors, including gliomas, and anti-PD-1 antibodies have been approved for treating some tumors by FDA. This study was to evaluate the therapeutical potential of combined TMZ with anti-PD-1 antibody therapy for mouse orthotopic glioma model. METHODS: We performed C57BL/6 mouse orthotopic glioma model by stereotactic intracranial implantation of glioma cell line GL261, mice were randomly divided into four groups: (1) control group; (2) TMZ group; (3) anti-PD-1 antibody group; (4) TMZ combined with anti-PD-1 antibody group...
May 11, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29753901/primary-intracranial-leiomyosarcoma-with-intra-tumoral-hemorrhage-case-report-and-review-of-literature
#14
Koichi Torihashi, Chin Masaki, Kazumichi Yoshida, Osamu Narumi, Sen Yamagata
BACKGROUND: Primary intracranial leiomyosarcoma is a very rare occurrence. And primary leiomyosarcoma with intra-tumoral hemorrhage has not been published. We firstly present a case report of a rapidly enlarging primary intracranial leiomyosarcoma with intra-tumoral hemorrhage. CASE DESCRIPTION: A 41-yr old female presented with right hemiparesis and gait disturbance. And she has the brain tumor on frontal lobe. And the tumor was increasing rapidly. Intra-tumoral hemorrhage was suddenly occurred...
May 10, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29749569/postoperative-hypofractionated-stereotactic-brain-radiation-hsrt-for-resected-brain-metastases-improved-local-control-with-higher-bed-10
#15
Aryavarta M S Kumar, Jonathan Miller, Seth A Hoffer, David B Mansur, Michael Coffey, Simon S Lo, Andrew E Sloan, Mitchell Machtay
INTRODUCTION: HSRT directed to large surgical beds in patients with resected brain metastases improves local control while sparing patients the toxicity associated with whole brain radiation. We review our institutional series to determine factors predictive of local failure. METHODS: In a total of 39 consecutive patients with brain metastases treated from August 2011 to August 2016, 43 surgical beds were treated with HSRT in three or five fractions. All treatments were completed on a robotic radiosurgery platform using the 6D Skull tracking system...
May 10, 2018: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29749540/personalized-regulation-of-glioblastoma-cancer-stem-cells-based-on-biomedical-technologies-from-theory-to-experiment-review
#16
Igor Bryukhovetskiy, Arina Ponomarenko, Irina Lyakhova, Sergey Zaitsev, Yulia Zayats, Maria Korneyko, Marina Eliseikina, Polina Mischenko, Valerie Shevchenko, Hari Shanker Sharma, Aruna Sharma, Yuri Khotimchenko
Glioblastoma multiforme (GBM) is one of the most aggressive brain tumors. GBM represents >50% of primary tumors of the nervous system and ~20% of intracranial neoplasms. Standard treatment involves surgery, radiation and chemotherapy. However, the prognosis of GBM is usually poor, with a median survival of 15 months. Resistance of GBM to treatment can be explained by the presence of cancer stem cells (CSCs) among the GBM cell population. At present, there are no effective therapeutic strategies for the elimination of CSCs...
May 10, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29742885/malignant-brain-tumours-in-children-present-and-future-perspectives
#17
REVIEW
James T Rutka
In contrast to many of the malignant tumors that occur in the central nervous system in adults, the management, responses to therapy, and future perspectives of children with malignant lesions of the brain hold considerable promise. Within the past 5 years, remarkable progress has been made with our understanding of the basic biology of the molecular genetics of several pediatric malignant brain tumors including medulloblastoma, ependymoma, atypical teratoid rhabdoid tumour, and high grade glioma/diffuse intrinsic pontine glioma...
May 2018: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/29742883/tandem-high-dose-chemotherapy-and-autologous-stem-cell-transplantation-in-children-with-brain-tumors-review-of-single-center-experience
#18
REVIEW
Ki Woong Sung, Do Hoon Lim, Hyung Jin Shin
The prognosis of brain tumors in children has improved for last a few decades. However, the prognosis remains dismal in patients with recurrent brain tumors. The outcome for infants and young children in whom the use of radiotherapy (RT) is very limited because of unacceptable long-term adverse effect of RT remains poor. The prognosis is also not satisfactory when a large residual tumor remains after surgery or when leptomeningeal seeding is present at diagnosis. In this context, a strategy using high-dose chemotherapy and autologous stem cell transplantation (HDCT/auto-SCT) has been explored to improve the prognosis of recurrent or high-risk brain tumors...
May 2018: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/29742881/medulloblastoma-in-the-molecular-era
#19
REVIEW
Claudia Miranda Kuzan-Fischer, Kyle Juraschka, Michael D Taylor
Medulloblastoma is the most common malignant brain tumor of childhood and remains a major cause of cancer related mortality in children. Significant scientific advancements have transformed the understanding of medulloblastoma, leading to the recognition of four distinct clinical and molecular subgroups, namely wingless (WNT), sonic hedgehog, group 3, and group 4. Subgroup classification combined with the recognition of subgroup specific molecular alterations has also led to major changes in risk stratification of medulloblastoma patients and these changes have begun to alter clinical trial design, in which the newly recognized subgroups are being incorporated as individualized treatment arms...
May 2018: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/29740437/targeting-and-therapy-of-glioblastoma-in-a-mouse-model-using-exosomes-derived-from-natural-killer-cells
#20
Liya Zhu, Ji Min Oh, Prakash Gangadaran, Senthilkumar Kalimuthu, Se Hwan Baek, Shin Young Jeong, Sang-Woo Lee, Jaetae Lee, Byeong-Cheol Ahn
Objective: Glioblastoma is a highly aggressive primary brain tumor that is resistant to radiotherapy and chemotherapy. Natural killer (NK) cells have been used to treat incurable cancers. Recent studies have investigated the effectiveness of NK-cell-derived exosomes (NK-Exo) for treating incurable cancers such as melanoma, leukemia, and neuroblastoma; however, NK-Exo have not been used to treat glioblastoma. In the present study, we investigated the antitumor effects of NK-Exo against aggressive glioblastoma both in vitro and in vivo and determined the tumor-targeting ability of NK-Exo by performing fluorescence imaging...
2018: Frontiers in Immunology
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