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intravenous drug use

Panteleimon D Mavroudis, Helen E Hermes, Donato Teutonico, Thomas G Preuss, Sebastian Schneckener
The environmental fates of pharmaceuticals and the effects of crop protection products on non-target species are subjects that are undergoing intense review. Since measuring the concentrations and effects of xenobiotics on all affected species under all conceivable scenarios is not feasible, standard laboratory animals such as rabbits are tested, and the observed adverse effects are translated to focal species for environmental risk assessments. In that respect, mathematical modelling is becoming increasingly important for evaluating the consequences of pesticides in untested scenarios...
2018: PloS One
Timothy M Rawson, Esmita Charani, Luke Sp Moore, Mark Gilchrist, Pantelis Georgiou, William Hope, Alison H Holmes
BackgroundC-reactive protein (CRP) pharmacodynamic (PD) models have the potential to provide adjunctive methods for predicting the individual exposure-response to antimicrobial therapy. We investigated CRP PD linked to a vancomycin pharmacokinetics (PK) model using routinely collected data from non-critical care adults in secondary care.MethodsPatients receiving intermittent intravenous vancomycin therapy in secondary care were identified. A two-compartment vancomycin PK model was linked to a previously described PD model describing CRP response...
March 20, 2018: Therapeutic Drug Monitoring
A O Kibitov, L P Babicheva, N A Chuprova, A V Shchurina, R A Romashkin
AIM: To reveal objective factors predicting the readiness of inpatient drug treatment patients to undergo a rehabilitation program. MATERIAL AND METHODS: In a retrospective comparative study, drug-dependent individuals (n=199, 16.6% females, 83.4% men, 91.5% opioid-dependent) were studied. After conducting motivational activities based on cognitive-behavioral psychotherapy, the premorbid, anamnestic, clinical, socio-demographic characteristics of patients were studied as possible predictors of readiness for rehabilitation using binary logistic regression...
2018: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
Paolo Adravanti, Eleonora Di Salvo, Giuseppe Calafiore, Sebastiano Vasta, Aldo Ampollini, Michele Attilio Rosa
Background: Studies on the use of tranexamic acid (TXA) to improve clinical outcomes after joint arthroplasty have reported contrasting results between intravenous (IV) TXA alone and combined IV and intraarticular (IA) administration. We compared the effectiveness of the 2 methods in providing higher postoperative hemoglobin (Hb) levels in patients undergoing primary total knee arthroplasty (TKA). Methods: A total of 100 TKA patients were randomly assigned to receive either IV TXA alone (group 1) or combined IV and topical IA TXA (group 2)...
March 2018: Arthroplasty Today
Hao Chan, Hsuan-Shun Huang, Der-Shan Sun, Chung-Jen Lee, Te-Sheng Lien, Hsin-Hou Chang
Mechanisms underlying cold-induced immunosuppression remain unclear. Here we found that cold exposure leads to transient receptor potential melastatin 8 (TRPM8)-dependent, renin-angiotensin-aldosterone system (RAAS)-mediated hypertension, which subsequently induces small molecule and fluid extravasation, increases plasma Ig levels, and elicits immunosuppression. An effect is similar to the clinically-used immunosuppressive treatments of intravenous immunoglobulin (IVIg) against various inflammatory diseases, such as immune thrombocytopenia (ITP)...
February 27, 2018: Oncotarget
Kimberly N Means, Amanda E Gentry, Tammy T Nguyen
Introduction: Atrial fibrillation (AF) is a common diagnosis of patients presenting to the emergency department (ED). Intravenous (IV) diltiazem bolus is often the initial drug of choice for acute management of AF with rapid ventricular response (RVR). The route of diltiazem after the initial IV loading dose may influence the disposition of the patient from the ED. However, no studies exist comparing oral (PO) immediate release and IV continuous infusion diltiazem in the emergency setting...
March 2018: Western Journal of Emergency Medicine
Aria Mahtabfar, Hamoon Eshraghi, Melroy D'Souza, William Berrigan, Kathleen Casey
Background: Infectious endocarditis (IE) typically occurs in the setting of intravenous drug use, prosthetic heart valves, or rheumatic heart disease. However, there are a few reports of IE occurring in the setting of immunosuppression secondary to cancer and/or chemotherapy. Here, we present a case of a cancer patient who developed anterior spinal artery (ASA) syndrome secondary to a septic embolus from IE. Case Presentation: A 78-year-old male with a history of gastroesophageal cancer treated with chemotherapy and radiation presented to the hospital after a fall at home...
2018: Case Reports in Medicine
Li Liu, Mingxing Miao, Yang Chen, Zhongjian Wang, Binbin Sun, Xiaodong Liu
This study investigated alterations in the function and expression of P-glycoprotein (P-GP), breast cancer resistance protein (BCRP), and multidrug resistance-associated protein 2 (MRP2) at the blood-brain barrier (BBB) of acute liver failure (ALF) mice and its clinical significance. ALF mice were developed using intraperitoneal injection of thioacetamide. P-GP, BCRP, and MRP2 functions were determined by measuring the ratios of brain-to-plasma concentration of rhodamine 123, prazosin, and dinitrophenyl- S -glutathione, respectively...
2018: Frontiers in Pharmacology
Stephanie C Cajigas-Loyola, Ricky L Miller, Bradley Spieler, Gregory Carbonella
Background: Mycotic aneurysms arising from the pulmonary arteries are rare; only a few cases have been reported. Staphylococcus and Streptococcus species are the most common causative pathogens. Mycotic aneurysms are seldom clinically apparent unless as a sequela of adverse procedural complications. They carry high morbidity and mortality if not treated expeditiously. Case Report: We present the case of a 37-year-old male with bacteremia and bronchopneumonia associated with a pulmonary artery mycotic aneurysm...
2018: Ochsner Journal
Emilie Bahne, Andreas Brønden, Tina Vilsbøll, Filip Krag Knop
Metformin is an oral anti-hyperglycaemic drug used as first-line treatment of Type 2 diabetes. It is more effective when administered orally than when administered intravenously, and metformin formulations, which prolong the time residing in the gut are the most potent. This indicates that the intestine plays an essential role in metformin's mode of action. Metformin also increases plasma concentrations of the glucose-lowering gut incretin hormone glucagon-like peptide-1 (GLP-1). This metformin-induced GLP-1 increment may constitute an important link between the gut and the glucose-lowering effect of metformin...
March 19, 2018: Ugeskrift for Laeger
Qin Wang, Luisette Delva, Paul H Weinreb, Robert B Pepinsky, Danielle Graham, Elvana Veizaj, Anne E Cheung, Weiping Chen, Ivan Nestorov, Ellen Rohde, Robin Caputo, Geoffrey M Kuesters, Tonika Bohnert, Liang-Shang Gan
BACKGROUND: Many studies have focused on the challenges of small molecule uptake across the blood-brain barrier, whereas few in-depth studies have assessed the challenges with the uptake of antibodies into the central nervous system (CNS). In drug development, cerebrospinal fluid (CSF) sampling is routinely used as a surrogate for assessing CNS drug exposure and biomarker levels. In this report, we have studied the kinetic correlation between CSF and serum drug concentration-time profiles for five humanized monoclonal antibodies in rats and cynomolgus monkeys and analyzed factors that affect their CSF exposure...
March 20, 2018: Fluids and Barriers of the CNS
Candy S Hwang, Lauren C Smith, Yoshihiro Natori, Beverly Ellis, Bin Zhou, Kim D Janda
The sharp increase in overdose deaths involving illicit opioid use has been declared a national crisis in the United States. This growing number of overdose deaths can in part be attributed to the increased frequency of fentanyl contamination in the US heroin supply. To combat this growing trend, we designed a vaccine containing a mixture of heroin and fentanyl hapten-conjugates as a proof-of-concept immunotherapy targeting a combination of these drugs. Rodents immunized with the admixture vaccine showed drug retention in serum and reduced distribution in the brain after administration of an intravenous bolus of heroin co-administered with fentanyl (10% w/w)...
March 20, 2018: ACS Chemical Neuroscience
Wasim Khasawneh, Salar Bani Hani
Medication errors remain among the major problems seen in hospitals. Such errors can relate to the prescription, dispensation, or administration of drugs. Human factors account for most of these mistakes, but other factors such as infusion pump programming defects should always be considered. Worldwide, medication errors have been reported to affect 2-30% of patients, depending on the institution. Intravenous lipid emulsion (ILE) infusion is frequently used as part of total parenteral nutrition in patients of all ages with feeding and gastrointestinal issues...
March 19, 2018: Drug Safety—Case Reports
Kavitha Ranganathan, Eric Simon, Jeremy Lynn, Alicia Snider, Yu Zhang, Noah Nelson, Alexis Donneys, Jose Rodriguez, Lauren Buchman, Dawn Reyna, Elke Lipka, Steven R Buchman
PURPOSE: Amifostine (AMF), a radioprotectant, is FDA-approved for intravenous administration in cancer patients receiving radiation therapy (XRT). Unfortunately, it remains clinically underutilized due to adverse side effects. The purpose of this study is to define the pharmacokinetic profile of an oral AMF formulation potentially capable of reducing side effects and increasing clinical feasibility. METHODS: Calvarial osteoblasts were radiated under three conditions: no drug, AMF, and WR-1065 (active metabolite)...
March 19, 2018: Pharmaceutical Research
Douglas Lobb, Alix Clarke, Hollis Lai
Background: The purpose of this study is to investigate the effects of administration order when a sedative drug (midazolam) and an opioid analgesic drug (fentanyl) is applied for moderate intravenous (IV) sedation in dentistry. Methods: A retrospective chart review was conducted in one dental clinic during its transition from a midazolam-first to a fentanyl-first protocol for dental procedures requiring moderate IV sedation. Physiological parameters, drug administration times, patient recovery times, drug dosages, and patient recall and satisfaction were investigated for differences...
February 2018: Journal of Dental Anesthesia and Pain Medicine
Jingxing Yang, Huilan Su, Wenshe Sun, Jiali Cai, Shiyuan Liu, Yimin Chai, Chunfu Zhang
Tumor combination therapy using nano formulations with multimodal synergistic therapeutic effects shows great potential for complete ablation of tumors. However, targeting tumor metastases with nano structures is a major obstacle for therapy. Therefore, developing a combination therapy system able to target both primary tumors and their metastases at distant sites with synergistic therapy is desirable for the complete eradication of tumors. To this end, a dual chemodrug-loaded theranostic system based on single walled carbon nanohorns (SWNHs) is developed for targeting both primary breast tumors and their lung metastases...
2018: Theranostics
Ken-Ichi Kaneko, Masaaki Tanaka, Akira Ishii, Yumiko Katayama, Takayoshi Nakaoka, Satsuki Irie, Hideki Kawahata, Takashi Yamanaga, Yasuhiro Wada, Takeshi Miyake, Kota Toshimoto, Kazuya Maeda, Yilong Cui, Masaru Enomoto, Etsushi Kawamura, Norifumi Kawada, Joji Kawabe, Susumu Shiomi, Hiroyuki Kusuhara, Yuichi Sugiyama, Yasuyoshi Watanabe
Various positron emission tomography (PET) probes have been developed to assess the in vivo activities of drug transporters in humans, that aid in the prediction of pharmacokinetic properties of drugs and the impact of drug-drug interactions. We developed a new PET probe, [11C ]dehydropravastatin ([11 C]DPV), and demonstrated its usefulness for the quantitative investigation of Oatps/SLCO and Mrp2/ABCC2 in rats. To further analyze the species differences and verify the pharmacokinetic parameters in humans, serial PET scanning of the abdominal region with [11 C]DPV was performed in six healthy volunteers with and without an OATP1Bs and MRP2 inhibitor, rifampicin (600 mg, oral), in a crossover fashion...
March 19, 2018: Drug Metabolism and Disposition: the Biological Fate of Chemicals
Elizabeth A Lakota, Voon Ong, Shawn Flanagan, Christopher M Rubino
Rezafungin (CD101) is a novel echinocandin antifungal agent currently in clinical development for the treatment of candidemia and invasive candidiasis. Rezafungin has potent in vitro activity against Candida albicans and Candida glabrata , including azole- and echinocandin-resistant isolates. The objective of this analysis was to develop a population pharmacokinetic (PK) model to characterize the disposition of rezafungin in plasma following intravenous (IV) administration. Data from two Phase 1 studies, a single-ascending-dose study and a multiple-ascending-dose study, were available...
March 19, 2018: Antimicrobial Agents and Chemotherapy
Xiyou Du, Abdur Rauf Khan, Manfei Fu, JianboJi, Aihua Yu, Guangxi Zhai
Paclitaxel (PTX) belongs to a class of taxane anti-tumor drug used for the clinic treatment of breast cancer, ovarian cancer, non-small-cell lung cancer, and so on. PTX has poor water solubility and oral bioavailability. It is generally administered via intravenous (i.v.) infusion. Traditional PTX injectable preparations contain Cremophor-EL and ethanol to improve its solubility, which would result in adverse reactions like severe hypersensitivity, neutropenia, etc. Adverse reactions can be reduced only by complicated pretreatment with glucocorticoid and antihistamines drugs and followed by PTX slow infusion for three hours, which has brought significant inconvenience to the patients...
March 16, 2018: International Journal of Pharmaceutics
Fang Yuan, Fang Yang, Wen Li, Xiai Yang, Qiong Gao, Lijie Bi, Yongli Jiang, Wen Jiang
OBJECTIVES: To investigate clinical characteristics and outcomes of nonconvulsive status epilepticus (NCSE) after convulsive status epilepticus (CSE) and determine risk factors for unfavorable outcomes. METHODS: We reviewed consecutive patients with NCSE after CSE over eight years in the neurological intensive care unit. Clinical presentations and the Salzburg EEG criteria for NCSE were used to identify patients with NCSE after CSE. Demographics, clinical features, and anti-epileptic treatment responses were collected and analyzed...
March 12, 2018: Epilepsy Research
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