Результаты поиска

UMIB Summit 2015

Аннотация не предоставлена источником. Откройте карточку для перехода к публикации.

Circadian clock and cancer.

Circadian rhythms play a critical role in regulating physiological and behavioral processes, such as the sleep-wake cycle, hormone secretion, and metabolism. These rhythms are controlled by endogenous biological clocks, which are synchronized with environmental cues, primarily the light-dark cycle. Notably, disruption or reprogramming of circadian rhythms is closely associated with cancer initiation, progression, and treatment response. At the molecular level, the dysregulation of core clock genes can disturb normal cellular rhythms, leading to aberrant cell proliferation, impaired DNA repair,

The Glucocorticoid Receptor: Isoforms, Functions, and Contribution to Glucocorticoid Sensitivity.

Glucocorticoids exert pleiotropic effects on all tissues to regulate cellular and metabolic homeostasis. Synthetic forms are used therapeutically in a wide range of conditions for their anti-inflammatory benefits, at the cost of dose and duration-dependent side effects. Significant variability occurs between tissues, disease states, and individuals with regard to both the beneficial and deleterious effects. The glucocorticoid receptor (GR) is the site of action for these hormones and a vast body of work has been conducted understanding its function. Traditionally, it was thought that the anti-

Tumor microenvironment signaling and therapeutics in cancer progression.

Tumor development and metastasis are facilitated by the complex interactions between cancer cells and their microenvironment, which comprises stromal cells and extracellular matrix (ECM) components, among other factors. Stromal cells can adopt new phenotypes to promote tumor cell invasion. A deep understanding of the signaling pathways involved in cell-to-cell and cell-to-ECM interactions is needed to design effective intervention strategies that might interrupt these interactions. In this review, we describe the tumor microenvironment (TME) components and associated therapeutics. We discuss t

Cost-effectiveness of preventative therapies for postmenopausal women with osteopenia.

BackgroundLimited data are available regarding the cost-effectiveness of preventative therapies for postmenopausal women with osteopenia. The objective of the present study was to evaluate the cost-effectiveness of raloxifene, alendronate and conservative care in this population.MethodsWe developed a microsimulation model to assess the incremental cost and effectiveness of raloxifene and alendronate relative to conservative care. We assumed a societal perspective and a lifetime time horizon. We examined clinical scenarios involving postmenopausal women from 55 to 75 years of age with bone mine

Совпадение в полном тексте источника
… The selective estrogen receptor modulator (SERM) raloxifene is indicated for the prevention and treatment of osteoporosis and is also associated with multiple extra-skeletal effects[ 11 ]. … The role of selective estrogen receptor modulators (SERMs) in postmenopausal health. Ann NY Acad Sci. 2003;997:373–377. doi: 10.1196/annals.1290.040. …

Wnt/β-catenin signaling pathway: proteins' roles in osteoporosis and cancer diseases and the regulatory effects of natural compounds on osteoporosis.

Osteoblasts are mainly derived from mesenchymal stem cells in the bone marrow. These stem cells can differentiate into osteoblasts, which have the functions of secreting bone matrix, promoting bone formation, and participating in bone remodeling. The abnormality of osteoblasts can cause a variety of bone-related diseases, including osteoporosis, delayed fracture healing, and skeletal deformities. In recent years, with the side effects caused by the application of PTH drugs, biphosphonate drugs, and calmodulin drugs, people have carried out more in-depth research on the mechanism of osteoblast

Critical considerations in the administration of antineoplastic therapy for patients with malignant solid tumors undergoing hemodialysis.

Patients with chronic kidney disease exhibit a higher risk of developing malignancies, and among those with end-stage renal disease (ESRD) on dialysis, approximately 7% are diagnosed with new-onset tumors within five years. Patients with ESRD who are receiving antineoplastic treatment exhibit a significantly higher incidence and greater severity of adverse effects associated with antineoplastic agents compared to individuals with normal renal function. This complexity involves multiple factors, including the therapy options and dose adjustment of antineoplastic agents, drug-related toxicities,

Совпадение в полном тексте источника
… Selective estrogen receptor modulator Tamoxifen and Anastrozole are mainly excreted in feces and only 9%-14% in the urine. The plasma concentrations of the two drugs were similar in hemodialysis patients compared to non-hemodialysis patients. … Thus, dose adjustments are not required for the use of selective estrogen receptor modulators in patients undergoing hemodialysis ( 23 , 110 , 111 ). …

Bone Marrow Adipocytes, Adipocytokines, and Breast Cancer Cells: Novel Implications in Bone Metastasis of Breast Cancer.

Accumulating discoveries highlight the importance of interaction between marrow stromal cells and cancer cells for bone metastasis. Bone is the most common metastatic site of breast cancer and bone marrow adipocytes (BMAs) are the most abundant component of the bone marrow microenvironment. BMAs are unique in their origin and location, and recently they are found to serve as an endocrine organ that secretes adipokines, cytokines, chemokines, and growth factors. It is reasonable to speculate that BMAs contribute to the modification of bone metastatic microenvironment and affecting metastatic br

Heterogeneous tissue-specific macrophages orchestrate metastatic organotropism of breast cancer: implications for promising therapeutics.

Compelling evidences have manifested that breast cancer cells prefer to metastasize to certain distant organs, including brain, lung, bone and liver. According to the canonical "seed and soil" theory, this prominent biological behavior, termed as metastatic organotropism, involves intricate interactions between breast cancer cells (the "seeds") and specific residents in the tumor microenvironment (the "soil"), initiating from pre-metastatic niche formation to metastatic outgrowth. Recently, multifaceted heterogeneity of tissue-specific macrophages (TSMs) and their roles played in organotropic

Alcohol Consumption and Autoimmune Diseases.

Alcohol is the second-most misused substance after tobacco. It has been identified as a causal factor in more than 200 diseases and 5.3% of all deaths and is associated with significant behavioral, social, and economic difficulties. As alcohol consumption may modulate the immune system's regulatory mechanisms to avoid attacking the body's tissues, it has been proven to play a dichotomic role in autoimmune diseases (ADs) based on the quantity of consumption. In this review, we report updated evidence on the role of alcohol in ADs, with a focus on alcohol addiction and the human biological immun

Screening the Active Phytochemicals From Eclipta prostrata and Unraveling Their Molecular Insight Into Human Malignancies.

Current drugs against multiple human malignancies are limited, and developing new treatment strategies is improbable within a short time. So, considering the current situation, phytochemicals could be a viable option for developing chemotherapeutic agents for managing numerous types of malignancies. Therefore, we aimed to locate all phytochemicals of Eclipta prostrata and unravel their chemotherapeutic mechanisms and strategies individually. We defined 25 active compounds based on their anticancer activities after filtering through IMPPAT and literature search, and these compounds have chemoth

Obesity and cancer.

Weight, weight gain, and obesity account for approximately 20% of all cancer cases. Evidence on the relation of each to cancer is summarized, including esophageal, thyroid, colon, renal, liver, melanoma, multiple myeloma, rectum, gallbladder, leukemia, lymphoma, and prostate in men; and postmenopausal breast and endometrium in women. Different mechanisms drive etiologic pathways for these cancers. Weight loss, particularly among postmenopausal women, reduces risk for breast cancer. Among cancer patients, data are less robust, but we note a long history of poor outcomes after breast cancer amon

Совпадение в полном тексте источника
… When the action of estrogens is interrupted by estrogen receptor modulators in randomized controlled trials, breast cancer incidence is approximately 50% lower [ 11 , 12 ]. …

Cancer-Related Alopecia Risk and Treatment.

Opinion statementCancer-related alopecia (CRA) presents a significant challenge for many patients undergoing cancer treatment, often affecting their psychological well-being and sense of identity. In my opinion, the optimal management of CRA requires a proactive, personalized approach that prioritizes both prevention and regrowth, while taking into account the type of cancer therapy, patient goals, and overall clinical context. For patients receiving chemotherapy, especially taxane- or anthracycline-based regimens, scalp cooling should be offered as a first-line preventative option whenever fe

Совпадение в полном тексте источника
… receptor modulators (tamoxifen), Aromatase inhibitors (anastrozole) | Breast, prostate, ovarian, endometrial [ 15 , 16 ] | ~ 25% [ 16 ] | Gradual, diffuse hair thinning of the frontal and bitemporal scalp Complete baldness rare Resembles androgenetic alopecia [ 16 ] CDK 4/6 Inhibitors Palbociclib, ribociclib … Selective estrogen receptor modulators such as tamoxifen has been reported to have the highest incidence of alopecia at 25.4%, followed by aromatase inhibitors such as anastrozole at 25%. …

Drugs and Epigenetic Molecular Functions. A Pharmacological Data Scientometric Analysis.

Interactions of drugs with the classical epigenetic mechanism of DNA methylation or histone modification are increasingly being elucidated mechanistically and used to develop novel classes of epigenetic therapeutics. A data science approach is used to synthesize current knowledge on the pharmacological implications of epigenetic regulation of gene expression. Computer-aided knowledge discovery for epigenetic implications of current approved or investigational drugs was performed by querying information from multiple publicly available gold-standard sources to (i) identify enzymes involved in c

Management of Bone Health Considerations in Patients with Cancer.

Background: Older adults with cancer are surviving longer due to earlier detection and more effective treatments for advanced stages. This population is at an elevated risk of osteoporosis due to age-related changes in bone density as well as the impact of cancer and cancer treatments on the skeletal system. Main Body: Cancer treatments are associated with increased bone loss and fracture risk via a variety of mechanisms. International guidelines recommend screening for cancer treatment-induced bone loss and provide treatment algorithms for pharmacological agents for those on hormonal therapy.

Совпадение в полном тексте источника
… Hormonal therapy consists of two main drug classes: estrogen receptor modulators (tamoxifen) and aromatase inhibitors (anastrozole, letrozole and exemestane) [ 22 ]. …

Alkylating anticancer agents and their relations to microRNAs.

Alkylating agents represent an important class of anticancer drugs. The occurrence and emergence of tumor resistance to the treatment with alkylating agents denotes a severe problem in the clinics. A detailed understanding of the mechanisms of activity of alkylating drugs is essential in order to overcome drug resistance. In particular, the role of non-coding microRNAs concerning alkylating drug activity and resistance in various cancers is highlighted in this review. Both synthetic and natural alkylating agents, which are approved for cancer therapy, are discussed concerning their interplay w

Нейростероиды и неврологические расстройства.

Нейростероиды играют важную роль в качестве эндогенных нейромодуляторов, которые производятся на местном уровне в центральной нервной системе и быстро изменяют взрываемость нейронов и активацию микроглиальных клеток и астроцитов. Здесь мы рассматриваем механизмы синтеза, метаболизма и действия нейростероидов в центральной нервной системе. Нейростероиды могут играть различные роли в центральной нервной системе в физиологических условиях, связывая их с мембранными ионными каналами и рецепторами, такими, как рецепторы гамма-аминобутирной кислоты типа А, рецепторы Nметил-D-асортатных рецепторов, к

Molecular mechanisms of the preventable causes of cancer in the United States.

Annually, there are 1.6 million new cases of cancer and nearly 600,000 cancer deaths in the United States alone. The public health burden associated with these numbers has motivated enormous research efforts into understanding the root causes of cancer. These efforts have led to the recognition that between 40% and 45% of cancers are associated with preventable risk factors and, importantly, have identified specific molecular mechanisms by which these exposures modify human physiology to induce or promote cancer. The increasingly refined knowledge of these mechanisms, which we summarize here,

Совпадение в полном тексте источника
… These include the selective estrogen receptor modulators (SERMs) tamoxifen and raloxifene and aromatase inhibitors such as anastrozole, letrozole, and exemestane ( Cummings et al. 1999 ; Powles et al. 2007 ; Vogel et al. 2009 ; Cuzick et al. 2011 ; Litton et al. 2012 ; Reimers et al. 2015 ). …

Prominent Role of Histone Modifications in the Regulation of Tumor Metastasis.

Tumor aggressiveness and progression is highly dependent on the process of metastasis, regulated by the coordinated interplay of genetic and epigenetic mechanisms. Metastasis involves several steps of epithelial to mesenchymal transition (EMT), anoikis resistance, intra- and extravasation, and new tissue colonization. EMT is considered as the most critical process allowing cancer cells to switch their epithelial characteristics and acquire mesenchymal properties. Emerging evidence demonstrates that epigenetics mechanisms, DNA methylation, histone modifications, and non-coding RNAs participate

The genetic architecture of bone metastases: unveiling the role of epigenetic and genetic modifications in drug resistance.

Bone metastases represent frequent and severe complications in various cancers, notably impacting prognosis and quality of life. This review article delves into the genetic and epigenetic mechanisms underpinning drug resistance in bone metastases, a key challenge in effective cancer treatment. The development of drug resistance in cancer can manifest as either intrinsic or acquired, with genetic heterogeneity playing a pivotal role. Intrinsic resistance is often due to pre-existing mutations, while acquired resistance evolves through genetic and epigenetic alterations during treatment. These a