Medicine and Health Sciences Commons^™

Cyclosporine Exacerbates Ketamine Toxicity In Zebrafish: Mechanistic Studies On Drug–Drug Interaction, Bonnie L. Robinson, Melanie Dumas, Syed F. Ali, Merle G. Paule, Qiang Gu, Jyotshna Kanungo

Food and Drug Administration Papers

Cyclosporine A (CsA) is an immunosuppressive drug commonly used in organ transplant patients to prevent allograft rejections. Ketamine is a pediatric anesthetic that noncompetitively inhibits the calcium-permeable N-methyl-^_D-aspartic acid receptors. Adverse drug–drug interaction effects between ketamine and CsA have been reported in mammals and humans. However, the mechanism of such drug–drug interaction is unclear. We have previously reported adverse effects of combination drugs, such as verapamil/ketamine and shown the mechanism through intervention by other drugs in zebrafish embryos. Here, we show that ketamine and CsA in combination produce developmental toxicity even leading to lethality in zebrafish larvae …

Food Safety Traceability, Yimin Wei, Boli Guo, Hongyan Liu, Shuai Wei, Jianrong Zhang

Food and Drug Administration Papers

With globalized economics, it is becoming more frequent to trade food across country and regional borders, which leads to expanding and spreading of all kinds of food safety incidents and hazards. Mad cow disease, foot and mouth disease, avian flu and other zoonotic diseases pose a grave threat to food safety and human health, causing serious economic losses for food industries and causing social panic at the same time. In order to reduce the losses caused by such serious zoonotic diseases, as well as to ensure food safety, many countries have started to implement food safety traceability systems. The European …

Quality By Design: Process Trajectory Development For A Dynamic Pharmaceutical Coprecipitation Process Based On An Integrated Real‐Time Process Monitoring Strategy, Huiquan Wu, Mansoor A. Khan

Food and Drug Administration Papers

Increasing prevalence of poorly water‐soluble drugs in pharmaceutical development provides notable risks of new products demonstrating low and erratic bioavailability. This dissolution‐limited bioavailability may have consequences for safety and efficacy, particularly for drugs delivered by the oral route of administration. Several novel drug delivery technologies have been developed to improve drug solubility, dissolution rates, and bioavailability. Among those are solid dispersion, nanotechnology, supercritical fluid technology, lipid‐based technology, and crystal engineering. Although these strategies are available for enhancing the bioavailability of drugs with low aqueous solubility, the success of these approaches is not yet guaranteed and is greatly dependent on the …

Microbial Ecology Of Fresh Vegetables, J. Zheng, A. De Jesus, S. Sahu, A. E. Hayford, Y. Luo, A. R. Datta, E. W. Brown, R. Bell

Food and Drug Administration Papers

The total consumption of fresh and processed vegetables has exceeded 123 kg per capita in the United States and 118 kg per capita in the European Union (http://www.helgilibrary.com/ indicators/index/vegetable‐consumption‐percapita) in 2009. Changes in lifestyles and consumption trends have prompted the sustained growth of fresh‐cut or minimally processed vegetables that are fresh and ready‐to‐eat (RTE). In 2011, for example, total US fresh‐cut produce sales through both food service and retail channels were estimated to surpass $27 billion (Cook et al., 2012).

Salmonella Inactivation During Extrusion Of An Oat Flour Model Food, Nathan M. Anderson, Susanne E. Keller, Niharika Mishra, Shannon Pickens, Dana Gradl, Tim Hartter, Galen Rokey, Christopher Dohl, Brian Plattner, Stuart Chirtel, Elizabeth M. Grasso-Kelley

Food and Drug Administration Papers

Little research exists on Salmonella inactivation during extrusion processing, yet many outbreaks associated with low water activity foods since 2006 were linked to extruded foods. The aim of this research was to study Salmonella inactivation during extrusion of a model cereal product. Oat flour was inoculated with Salmonella enterica serovar Agona, an outbreak strain isolated from puffed cereals, and processed using a single-screw extruder at a feed rate of 75 kg/h and a screw speed of 500 rpm. Extrudate samples were collected from the barrel outlet in sterile bags and immediately cooled in an ice–water bath. Populations were determined using …

An Overview Of The Role Of Mathematical Models In Implementation Of Quality By Design Paradigm For Drug Development And Manufacture, Sharmista Chatterjee, Christine M.V. Moore, Moheb M. Nasr

Food and Drug Administration Papers

A model is a representation of an underlying physical–chemical phenomenon. In the pharmaceutical industry, mathematical‐based models can be applied at all stages of development, starting with formulation design, continuing through process development and scale‐up, and extending into process monitoring and control of the commercial process. Implementation of models offers many benefits. These include, but are not limited to, (i) enhanced process understanding, (ii) reduction of experimentation cost, and (iii) improvement of productivity and product quality.

Models can be broadly categorized as either qualitative or quantitative. The focus of this chapter is quantitative models. These can be classified into three broad …

Modeling And Statistical Issues Related To Salmonella In Low Water Activity Foods, Sofia M. Santillana Farakos, Michelle Danyluk, Donald Schaffner, Régis Pouillot, Linda J. Harris, Bradley P. Marks

Food and Drug Administration Papers

The presence and survival of Salmonella in low water activity (a_w) foods continues to pose a challenge for the food industry. Peer‐reviewed literature data on prevalence and levels of contamination of Salmonella in low water activity foods in the United States are limited. Available published data include those on: Salmonella contamination on nuts and peanuts (Calhoun et al., 2013), almonds (Danyluk et al., 2007; Bansal et al., 2010), pecans (Brar, Strawn, and Danyluk, 2016), and walnuts (Davidson et al., 2015); prevalence and levels of Salmonella on spices (Van Doren et al., 2013); as …

The Mechanism Of Cirp In Inhibition Of Keratinocytes Growth Arrest And Apoptosis Following Low Dose Uvb Radiation, Yi Liao, Jianguo Feng, Yi Zhang, Liling Tang, Shiyong Wu

Food and Drug Administration Papers

UV induces CIRP expression and subsequent Stat3 activation, but the biological function and mechanism of CIRP and Stat3 in mediating UVB-induced skin carcinogenesis have not been fully elucidated. In this study, we demonstrate that CIRP is elevated in all tested melanoma and non-melanoma skin cancer cell lines; and the expression of CIRP is upregulated in keratinocytes after being irradiated with relatively low dose (<5 mJ/cm²), but not high dose (50 mJ/cm²), UVB acutely and chronically. The increased expression of CIRP, either induced by UVB or through overexpression, leads to resistance of keratinocytes to UVB-induced growth arrest and …

High Throughput Quantification Of Apolipoproteins A-I And B-100 By Isotope Dilution Ms Targeting Fast Trypsin Releasable Peptides Without Reduction And Alkylation, Bryan A. Parks, David M. Schieltz, Michael L. Andrews, Michael S. Gardner, John C. Rees, Christopher A. Toth, Jeffrey I. Jones, Lisa G. Mcwilliams, Zsuzsanna Kuklenyik, James L. Pirkle, John R. Barr

Food and Drug Administration Papers

Purpose: Apolipoprotein A-I (ApoA-I) and apolipoprotein B-100 (ApoB-100) are amphipathic proteins that are strong predictors of cardiovascular disease risk. The traceable calibration of apolipoprotein assays is a persistent challenge, especially for ApoB-100, which cannot be solubilized in purified form.

Experimental design: A simultaneous quantitation method for ApoA-I and ApoB-100 was developed using tryptic digestion without predigestion reduction and alkylation, followed by LC separation coupled with isotope dilution MS analysis. The accuracy of the method was assured by selecting structurally exposed signature peptides, optimal choice of detergent, protein: enzyme ratio, and incubation time. Peptide calibrators were value assigned by isobaric tagging …

Cyclosporine Exacerbates Ketamine Toxicity In Zebrafish: Mechanistic Studies On Drug–Drug Interaction, Bonnie L. Robinson, Melanie Dumas, Syed F. Ali, Merle G. Paule, Qiang Gu, Jyotshna Kanungo

Food and Drug Administration Papers

Cyclosporine A (CsA) is an immunosuppressive drug commonly used in organ transplant patients to prevent allograft rejections. Ketamine is a pediatric anesthetic that noncompetitively inhibits the calcium-permeable N-methyl-D-aspartic acid receptors. Adverse drug–drug interaction effects between ketamine and CsA have been reported in mammals and humans. However, the mechanism of such drug–drug interaction is unclear. We have previously reported adverse effects of combination drugs, such as verapamil/ketamine and shown the mechanism through intervention by other drugs in zebrafish embryos. Here, we show that ketamine and CsA in combination produce developmental toxicity even leading to lethality in zebrafish larvae when exposure began …

Rapid Testing Of Food Matrices For Bacillus Cereus Enterotoxins, Sandra M. Tallent, Jennifer M. Hait, Ann M. Knolhoff, Reginald W. Bennett, Thomas S. Hammack, Timothy R. Croley

Food and Drug Administration Papers

Nine different food products frequently associated with Bacillus cereus outbreaks were chosen as representative matrices to be evaluated with end-point polymerase chain reaction (PCR), enzyme linked immunosorbent assay, lateral flow device and mass spectrometry for detection of enterotoxins associated with human illness. Testing was performed on food portions inoculated with a bacterial strain and incubated at 30C for either 5 h or 24 h. A screening end-point multiplex PCR targeting enterotoxin genes including the emetic toxin and three diarrheal toxins, hemolytic hemolysin BL (Hbl), nonhemoltyic enterotoxin (Nhe), and cytolysin K. Commercially available kits were used to determine the presence/absence of …

Variation In Organ-Specific Pik3ca And Kras Mutant Levels In Normal Human Tissues Correlates With Mutation Prevalence In Corresponding Carcinomas, Barbara L. Parsons, Karen L. Mckim, Meagan B. Myers

Food and Drug Administration Papers

Large-scale sequencing efforts have described the mutational complexity of individual cancers and identified mutations prevalent in different cancers. As a complementary approach, allele specific competitive blocker PCR (ACB-PCR) is being used to quantify levels of hotspot cancer driver mutations (CDMs) with high sensitivity, to elucidate the tissue-specific properties of CDMs, their occurrence as tumor cell subpopulations, and their occurrence in normal tissues. Here we report measurements of PIK3CA H1047R mutant fraction (MF) in normal colonic mucosa, normal lung, colonic adenomas, colonic adenocarcinomas, and lung adenocarcinomas. We report PIK3CA E545K MF measurements in those tissues, as well as in normal breast, …

Cannabinoid Disposition In Oral Fluid After Controlled Smoked, Vaporized, And Oral Cannabis Administration, Madeleine J. Swortwood, Matthew N. Newmeyer, Maria Andersson, Osama A. Abulseoud, Karl B. Scheidweiler, Marilyn A. Huestis

Food and Drug Administration Papers

Oral fluid (OF) is an important matrix for monitoring drugs. Smoking cannabis is common, but vaporization and edible consumption also are popular. OF pharmacokinetics are available for controlled smoked cannabis, but few data exist for vaporized and oral routes. Frequent and occasional cannabis smokers were recruited as participants for four dosing sessions including one active (6.9% Δ⁹-tetrahydrocannabinol, THC) or placebo cannabis-containing brownie, followed by one active or placebo cigarette, or one active or placebo vaporized cannabis dose. Only one active dose was administered per session. OF was collected before and up to 54 (occasional) or 72 (frequent) h …

Recent Analytical Methods For The Analysis Of Sweeteners In Food: A Regulatory Perspective, Romina Shah, Lowri S. De Jager

Food and Drug Administration Papers

Non-nutritive or low calorie sweeteners are commonly used worldwide in the food industry, often in combination in order to limit undesirable tastes. The list of allowable sweeteners varies among countries and it is important for regulatory agencies and food safety laboratories to monitor these highly consumed products to ensure compliance with worldwide regulations. Current analytical methods for confirmation and quantification of sweeteners must allow for confirmation of analyte identity in order to be compatible with today’s standards. Various methods for the determination of non-nutritive sweeteners have been reported in the literature. Th e most common multi-sweetener methods involve high performance …

Detection Of Allergen Markers In Food: Analytical Methods, Girdhari M. Sharma, Sefat E. Khuda, Christine H. Parker, Anne C. Eischeid, Marion Pereira

Food and Drug Administration Papers

Food allergens are proteins that are well tolerated by most, but can cause severe reactions in sensitive individuals. Since there is no cure for food allergy, strict adherence to an allergen-free diet is the only safe choice currently available for allergic consumers. Accurate food labeling can help consumers avoid foods containing an allergenic ingredient. Regulatory agencies have mandated the labeling of major food allergens on packaged foods to help with safe food choices. However, the inadvertent presence of an allergen in food due to cross-contact and labeling error can jeopardize consumer health. Analytical methods are developed for allergen detection and …

Current Analytical Techniques For Food Lipids, Cynthia T. Srigley, Magdi M. Mossoba

Food and Drug Administration Papers

Thee analysis of food lipids presents significant challenges due to the wide variety of sample matrices, large range of total fat contents, and complex compositions of fatty acids. This is chapter reviews conventional analytical techniques for the quantification of total fat and fatty acids in foods and food ingredients, including the gravimetric determination of total fat, the calculation of fat and fatty acids using gas chromatography (GC), and the analysis of proximates content (i.e., fat, protein, carbohydrate, moisture, and ash) by Fourier transform infrared (FTIR) spectroscopy. Current official methods of analysis are evaluated and the use of certified reference materials …

Multiple Imputation To Evaluate The Impact Of An Assay Change In National Surveys, Maya Sternberg

Food and Drug Administration Papers

National health surveys, such as the National Health and Nutrition Examination Survey, are used to monitor trends of nutritional biomarkers. These surveys try to maintain the same biomarker assay over time, but there are a variety of reasons why the assay may change. In these cases, it is important to evaluate the potential impact of a change so that any observed fluctuations in concentrations over time are not confounded by changes in the assay. To this end, a subset of stored specimens previously analyzed with the old assay is retested using the new assay. These paired data are used to …

Antiemetic Use Among Pregnant Women In The United States: The Escalating Use Of Ondansetron, Lockwood G. Taylor, Steven T. Bird, Leyla Sahin, Melissa S. Tassinari, Patty Greene, Marsha E. Reichman, Susan E. Andrade, Katherine Haffenreffer, Sengwee Toh

Food and Drug Administration Papers

Purpose To examine ondansetron use in pregnancy in the context of other antiemetic use among a large insured United States population of women delivering live births.

Methods We assessed ondansetron and other antiemetic use among pregnant women delivering live births between 2001 and 2015 in 15 data partners contributing data to the Mini-Sentinel Distributed Database. We identified live birth pregnancies using a validated algorithm, and all forms of ondansetron and other available antiemetics were identified using National Drug Codes or procedure codes. We assessed the prevalence of antiemetic use by trimester, calendar year, and formulation.

Results In over 2.3 million …

Certain Dyes As Pharmacologically Active Substances In Fish Farming And Other Aquaculture Products, Eric Verdon, Wendy C. Andersen

Food and Drug Administration Papers

The last 40 years have brought enormous changes to the aquaculture industry. The farming of fish and of seafood products has been continuously increasing from 3.9% by weight in 1970 to 36% in 2006 according to theWorld Health Organization (WHO) and Food and Agriculture Organization (FAO) of the United Nations.¹ The global trend of aquaculture development gaining importance in total fish supply has remained uninterrupted. Farmed food fish contributed a record 42.2% of the total 158 million tonnes of fish produced by capture fisheries and aquaculture in 2012 (Figure 9.1). This compares with just 13.4% in 1990 and 25.7% …

Color And Power Doppler Combined With Fetal Intelligent Navigation Echocardiography (Fine) To Evaluate The Fetal Heart, L. Yeo, R. Romero

Food and Drug Administration Papers

Objective To evaluate the performance of color and bidirectional power Doppler ultrasound combined with Fetal Intelligent Navigation Echocardiography (FINE) in examining the fetal heart.

Methods A prospective cohort study was conducted of fetuses in the second and third trimesters with a normal heart or with congenital heart disease (CHD). One or more spatiotemporal image correlation (STIC) volume datasets, combined with color or bidirectional power Doppler (S-flow) imaging, were acquired in the apical four-chamber view. Each successfully obtained STIC volume was evaluated by STICLoop™ to determine its appropriateness before applying the FINE method. Visualization rates for standard fetal echocardiography views using …

The Impact Of The Boxed Warning On The Duration Of Use For Depot Medroxprogesterone Acetate, Efe Eworuke, Joo-Yeon Lee, Lisa Soule, Vaishali Popat, David G. Moeny

Food and Drug Administration Papers

Objective The objective of this study was to examine the impact of the Food and Drug Administration’s boxed warning on the utilization of depot medroxyprogesterone (DMPA).

Methods From the IMS Lifelink data (2001–2009), we identified DMPA and oral combined hormonal contraceptive (CHC) users without a prescription claim 6 months before and after the first and last claim. Episodes were defined as all contiguous claims with no more than 90- day DMPA or 30-day CHC between claims. Days’ supply (CHC) and 90-day duration (DMPA) was used to determine episodes. We used interrupted time series to evaluate changes in the mean episode …

Disparities In Hypertension And Cardiovascular Disease In Blacks: The Critical Role Of Medication Adherence, Keith C. Ferdinand, Kapil Yadav, Samar A. Nasser, Helene D. Clayton-Jeter, John Lewin, Dennis R. Cryer, Fortunato Fred Senatore

Food and Drug Administration Papers

Blacks are two to three times as likely as whites to die of preventable heart disease and stroke. Declines in mortality from heart disease have not eliminated racial disparities. Control and effective treatment of hypertension, a leading cause of cardiovascular disease, among blacks is less than in whites and remains a challenge. One of the driving forces behind this racial/ethnic disparity is medication nonadherence whose cause is embedded in social determinants. Eight practical approaches to addressing medication adherence with the potential to attenuate disparities were identified and include: (1) patient engagement strategies, (2) consumer-directed health care, (3) patient portals, (4) …

Current Practices In Corrosion, Surface Characterization, And Nickel Leach Testing Of Cardiovascular Metallic Implants, Srinidhi Nagaraja, Matthew Di Prima, David Saylor, Erica Takai

Food and Drug Administration Papers

In an effort to better understand current test practices and improve nonclinical testing of cardiovascular metallic implants, the Food and Drug Administration (FDA) held a public workshop on Cardiovascular Metallic Implants: corrosion, surface characterization, and nickel leaching. The following topics were discussed: (1) methods used for corrosion assessments, surface characterization techniques, and nickel leach testing of metallic cardiovascular implant devices, (2) the limitations of each of these in vitro tests in predicting in vivo performance, (3) the need, utility, and circumstances when each test should be considered, and (4) the potential testing paradigms, including acceptance criteria for each test. In …

Monitoring Harm Perceptions Of Smokeless Tobacco Products Among U.S. Adults: Health Information National Trends Survey 2012, 2014, 2015, Shari P. Feirman, Elisabeth A. Donaldson, Mark Parascandola, Kimberly Snyder, Cindy Tworek

Food and Drug Administration Papers

Introduction: Changes to the U.S. smokeless tobacco landscape in recent years include a change to health warnings on packages, the implementation of bans in some stadiums, and the launch of a federal youth pre- vention campaign. It is unclear whether such changes have impacted consumer beliefs about smokeless tobacco. This study examines relative harm perceptions of smokeless tobacco compared to cigarettes among adults and assesses changes in smokeless tobacco harm perceptions over time.

Methods: We analyzed data from three cycles (2012, 2014, 2015) of the Health Information National Trends Survey (HINTS). Using 2015 data, we assessed bivariate associations between smokeless …