bluuebunny/crossref_metadata_2025_split huggingface dataset:
Maternal caffeine consumption and risk of congenital limb deficiencies
Authors: Chen Lei , Bell Erin M. , Browne Marilyn L. , Druschel Charlotte M. , Romitti Paul A. , Schmidt Rebecca J. , Burns Trudy L. , Moslehi Roxana , Olney Richard S. ,   and the National Birth Defects Prevention Study
Published: August 2012

AbstractBACKGROUNDAnimal studies have shown that high doses of caffeine might cause congenital limb deficiencies (LDs); however, no epidemiologic studies have explored this relation.METHODSThis case‐control study assessed associations between maternal dietary caffeine and congenital LDs using data from the National Birth Defects Prevention Study (NBDPS), with 844 LD cases and 8069 controls from 1997 to 2007. Caffeine intakes from beverages (coffee, tea, and soda) and chocolate combined and by beverage type were examined. Adjusted odds ratios (aORs) and 95% confidence intervals (CIs) were estimated for subtypes of isolated LDs (no additional major anomalies) and LDs with other major anomalies separately, comparing the odds of 10 to <100, 100 to <200, 200 to <300, and 300+ mg/day total caffeine intake to 0 to <10 mg/day.RESULTSAll total dietary caffeine intake categories of 10 mg/day and above were marginally associated with odds of all isolated LDs combined (aOR, 1.4–1.7), isolated longitudinal LDs (aOR, 1.2–1.6), and isolated transverse LDs (aOR, 1.3–1.8) compared to the lowest intake category. A dose‐response pattern for total dietary caffeine intake was not observed.CONCLUSIONSA weak increased risk of congenital LDs associated with maternal dietary caffeine consumption was observed in this study; however, risk did not vary by amount of caffeine consumed. Birth Defects Research (Part A), 2012. © 2012 Wiley Periodicals, Inc.
Teratology public affairs committee position paper: Iodine deficiency in pregnancy
Authors: Obican Sarah G. , Jahnke Gloria D. , Soldin Offie P. , Scialli Anthony R. 
Published: August 2012

AbstractIodine deficiency is an important nutritional deficiency, with more than 2 billion people worldwide estimated to be at risk. The developing fetus and young children are particularly at risk. During pregnancy and lactation, iodine requirements increase, whether in iodine‐poor or iodine‐sufficient countries, making the mother and the developing fetus vulnerable. The American Thyroid Association (ATA) recommends 250 micrograms per day of iodine intake for pregnant and lactating women. The thyroid gland is able to adapt to the changes associated with pregnancy as long as sufficient iodine is present. Dietary intake is the sole source of iodine, which is essential to the synthesis of thyroid hormones. Iodine is found in multiple dietary sources including iodized salt, dairy products, seaweed, and fish. Prenatal vitamins containing iodine are a good source of iodine, but iodine content in multivitamin supplements is highly variable. Congenital hypothyroidism is associated with cretinism. Clinical hypothyroidism has been associated with increased risk of poor perinatal outcome including prematurity, low birth weight, miscarriage, preeclampsia, fetal death, and impaired fetal neurocognitive development. Subclinical hypothyroidism is also associated with poor pregnancy outcomes and potential fetal neurocognitive deficits, but the data are more variable than those for clinical hypothyroidism. We concur with the ATA recommendation that all pregnant and lactating women should ingest (through diet and supplements) 250 micrograms of iodine daily. To achieve this goal, we recommend that all pregnant and lactating women take daily iodine supplementation of 150 micrograms. Birth Defects Research (Part A) 94:677–682, 2012. © 2012 Wiley Periodicals, Inc.
Evaluation of ICD‐9‐CM codes for craniofacial microsomia
Authors: Luquetti Daniela V. , Saltzman Babette S. , Vivaldi Daniela , Pimenta Luiz A. , Hing Anne V. , Cassell Cynthia H. , Starr Jacqueline R. , Heike Carrie L. 
Published: August 2012

AbstractBACKGROUNDCraniofacial microsomia (CFM) is a congenital condition characterized by microtia and mandibular underdevelopment. Healthcare databases and birth defects surveillance programs could be used to improve knowledge of CFM. However, no specific International Classification of Diseases, 9th Revision, Clinical Modification (ICD‐9‐CM) code exists for this condition, which makes standardized data collection challenging. Our aim was to evaluate the validity of existing ICD‐9‐CM codes to identify individuals with CFM.METHODSStudy sample eligibility criteria were developed by an expert panel and matched to 11 ICD‐9‐CM codes. We queried hospital discharge data from two craniofacial centers and identified a total of 12,254 individuals who had ≥1 potentially CFM‐related code(s). We reviewed all (n = 799) medical records identified at the University of North Carolina (UNC) and 500 randomly selected records at Seattle Children's Hospital (SCH). Individuals were classified as a CFM case or non‐case.RESULTSThirty‐two individuals (6%) at SCH and 93 (12%) at UNC met the CFM eligibility criteria. At both centers, 59% of cases and 95% of non‐cases had only one code assigned. At both centers, the most frequent codes were 744.23 (microtia), 754.0 and 756.0 (nonspecific codes), and the code 744.23 had a positive predictive value (PPV) >80% and sensitivity >70%. The code 754.0 had a sensitivity of 3% (PPV <1%) at SCH and 36% (PPV = 5%) at UNC, whereas 756.0 had a sensitivity of 38% (PPV = 5%) at SCH and 18% (PPV = 26%) at UNC.CONCLUSIONSThese findings suggest the need for a specific CFM code to facilitate CFM surveillance and research. Birth Defects Research (Part A), 2012. © 2012 Wiley Periodicals, Inc.
Nitrosatable drug exposure during the first trimester of pregnancy and selected congenital malformations
Authors: Brender Jean D. , Werler Martha M. , Shinde Mayura U. , Vuong Ann M. , Kelley Katherine E. , Huber John C. , Sharkey Joseph R. , Griesenbeck John S. , Romitti Paul A. , Malik Sadia , Suarez Lucina , Langlois Peter H. , Canfield, Mark A. ,   and the National Birth Defects Prevention Study
Published: August 2012

AbstractBACKGROUNDNitrosatable drugs can react with nitrite in the stomach to form N‐nitroso compounds, and results from animal studies suggest that N‐nitroso compounds are teratogens. With data from the National Birth Defects Prevention Study, the relation between prenatal exposure to nitrosatable drugs and limb deficiencies, oral cleft, and heart malformations in offspring was examined.METHODSMaternal reports of drugs taken during the first trimester of pregnancy were classified with respect to nitrosatability for mothers of 741 babies with limb deficiencies, 2774 with oral cleft malformations, 8091 with congenital heart malformations, and 6807 without major congenital malformations. Nitrite intake was estimated from maternal responses to a food frequency questionnaire.RESULTSIsolated transverse limb deficiencies and atrioventricular septal defects were associated with secondary amine drug exposures (adjusted odds ratios [aORs], 1.51; 95% confidence limit [CI], 1.11–2.06 and aOR, 1.97; 95% CI, 1.19–3.26, respectively). Tertiary amines were associated with hypoplastic left heart syndrome (aOR, 1.50; 95% CI, 1.10–2.04) and single ventricle (aOR, 1.61; 95% CI, 1.06–2.45). These two malformations were also significantly associated with amide drugs. For several malformations, the strongest associations with nitrosatable drug use occurred among mothers with the highest estimated dietary nitrite intake, especially for secondary amines and atrioventricular septal defects (highest tertile of nitrite, aOR, 3.30; 95% CI, 1.44–7.58).CONCLUSIONPrenatal exposure to nitrosatable drugs may be associated with several congenital malformations, especially with higher nitrite intake. The possible interaction between nitrosatable drugs and dietary nitrite on risk of congenital malformations warrants further attention. Birth Defects Research (Part A) 94:701–713, 2012. © 2012 Wiley Periodicals, Inc.
Short interpregnancy interval and gastroschisis risk in the national birth defects prevention study
Authors: Getz Kelly D. , Anderka Marlene T. , Werler Martha M. , Case Amy P. 
Published: August 2012

AbstractBACKGROUNDThe micronutrient depletion hypothesis proposes that consecutive pregnancies spaced too closely may leave insufficient time for maternal micronutrient replenishment. Short interpregnancy intervals (IPI) have been associated with an increased risk for several adverse pregnancy outcomes, but an association with gastroschisis risk has not been previously explored.METHODSWithin a population‐based, case‐control study, we evaluated the association between IPI length and gastroschisis risk using multivariable logistic regression models to estimate gastroschisis odds ratios for IPI <12 months and 12 to 17 months relative to those 18 to 23 months. We further evaluated the association between IPI and gastroschisis risk stratified by maternal age, periconceptional multivitamin use, preceding pregnancy outcome, study center region, and season of conception to explore whether observed associations were compatible with the hypothesis of maternal micronutrient depletion.RESULTSFor women with IPI <12 months, the adjusted odds ratio (aOR) was 1.7 (95% confidence interval [CI]: 1.1–2.5). The magnitude of the observed effect did not differ among strata of maternal age or periconceptional multivitamin use. However, the association was more pronounced after a miscarriage or termination (aOR: 2.5; 95% CI: 1.1–5.6) and among women who resided in northern study areas (aOR: 2.8; 95% CI: 1.3–5.9). The higher risk observed with short IPI among women in northern study areas was attenuated for spring/summer conceptions.CONCLUSIONShort IPI was associated with an increased risk for gastroschisis, particularly among women whose preceding pregnancy resulted in a miscarriage or termination and among those who resided in northern study areas with winter/fall conception. Birth Defects Research (Part A) 94:714–720, 2012. © 2012 Wiley Periodicals, Inc.
Birth defects in infants born in 1998–2004 to men and women serving in the U.S. military during the 1990–1991 Gulf War era
Authors: Bukowinski Anna T. , DeScisciolo Connie , Conlin Ava Marie S. , K. Ryan Margaret A. , Sevick Carter J. , Smith Tyler C. 
Published: August 2012

AbstractBACKGROUNDConcerns about reproductive health persist among U.S. military members who served in the 1990–1991 Gulf War. This study explores the long‐term impact of 1990–1991 Gulf War deployment on the prevalence of birth defects among infants of Gulf War veterans.METHODSHealth care data from the Department of Defense Birth and Infant Health Registry and demographic and deployment information from the Defense Manpower Data Center were used to identify infants born between 1998 and 2004 to both male and female 1990–1991 Gulf War veterans. Multivariable logistic regression models estimated the adjusted odds of any birth defect and eight specific birth defects among infants of deployers versus non‐deployers. In addition, birth defects were evaluated among infants born to 1990–1991 Gulf War veterans with deployment‐specific exposures.RESULTSAmong 178,766 infants identified for these analyses, 3.4% were diagnosed with a birth defect in the first year of life. Compared to infants of non‐deployers, infants of deployers were not at increased odds of being diagnosed with a birth defect, or any of eight specific birth defects, in the first year of life. A slightly increased prevalence of birth defects was observed among infants born to men who deployed to the 1990–1991 Gulf War for 153 to 200 days compared to those who deployed for 1 to 92 days. No other deployment‐specific exposures were associated with birth defects in these infants.CONCLUSIONSThe 1990–1991 Gulf War deployers, including those with specific exposures of concern, were not found to be at increased risk for having infants with birth defects 7 to 14 years after deployment. Birth Defects Research (Part A) 94:721–728, 2012. Published 2012 Wiley Periodicals, Inc.
Solvent independent conformational propensities of [1,2,3]triazolyl‐bridged parathyroid hormone‐related peptide‐derived cyclo‐nonapeptide analogues
Authors: Scrima Mario , Grimaldi Manuela , Di Marino Sara , Testa Chiara , Rovero Paolo , Papini Anna Maria , Chorev Michael , D'Ursi Anna Maria 
Published: August 2012

AbstractThe recently introduced Cu(I)‐catalyzed azide–alkyne 1,3‐dipolar Huisgen cycloaddition as a prototypic “click chemistry reaction” presented an opportunity for introducing the 1,4‐disubstituted‐[1,2,3]triazolyl moiety as a new isostere for peptide bonds in the backbone. Previous study in our lab focused on the synthesis of a model i‐to‐i+4 side chain‐to‐side chain 1,4‐ and 4,1‐disubstituted‐[1,2,3]triazolyl‐bridged cyclo‐nonapeptide I (Scheme 1) as analogues of its structurally related helical i‐to‐i+4 lactam‐bridged cyclo‐nonapeptide [Lys13(& 1),Asp17(& 2)]parathyroid hormone related peptide (PTHrP)(11–19)NH21 a truncated version of the α‐helical and potent parathyroid hormone receptor 1 agonist [Lys13(& 1),Asp17(& 2)]PTHrP(1‐34)NH2,2,3 Nα‐Ac‐Lys‐Gly‐Lys(& 1)‐Ser‐Ile‐Gln‐Asp(& 2)‐Leu‐Arg‐NH2]. Systematic [1,2,3]triazolyl‐containing bridge structure–conformation relationship studies in hexafluoroacetone/water mixture included incorporation of bridges varied in size and position and orientation of the triazolyl ring within the bridge. These studies revealed that the size of methylene bridge flanking triazolyl moiety is critical to reproduce in the heterodetic cyclo‐nonapeptides. The conformational features of the analogues cyclo‐nonapeptide in which Lys13 and Asp17 are bridged by the isosteric lactam. Here, we extend our conformational analysis to dimethyl sulfoxide/water mixture in an effort to characterize inherent conformational properties of the heterodetic cyclopeptides that are solvent independent. Our present study shows that the physicochemical properties of the structure‐supporting solvent cannot override the effect of the size of methylene bridge to form helical mimetic structures. Moreover, we prove that [1,2,3]triazolyl ring is not a simple bioisostere of lactam bond, but it affects the secondary structure of the peptide, in relation to its positioning orientation. © 2012 Wiley Periodicals, Inc. Biopolymers (Pept Sci) 98: 535–545, 2012.
A rapid HPLC‐ESI‐MS/MS method for determination of β‐asarone, a potential anti‐epileptic agent, in plasma after oral administration of Acorus calamus extract to rats
Authors: Nandakumar Sreenath , Menon Sasikumar , Shailajan Sunita 
Published: August 2012

ABSTRACTβ‐Asarone (BAS), a phenylpropanoid from Acorus calamus Linn., has shown biological effects in the management of cognitive impairment conditions such as Alzheimer's disease. The present paper describes a selective and sensitive liquid chromatography–tandem mass spectrometric method (HPLC‐MS/MS) using electrospray ionization source (ESI) for quantification of BAS in rat plasma. Briefly, the plasma samples were pre‐treated using a simple solid‐phase extraction method. The separation of BAS and the internal standard, caffeine, was achieved on an Agilent Zorbax XDB C18 column (50 × 2.1 mm i.d., 5 µm) using 0.2 mL/min isocratic mobile phase flow. The detection was performed using an Applied Biosystems Hybrid Q‐Trap API 2000 mass spectrometer equipped with an ESI source operated in positive mode. Also, the developed bioanalytical method was validated as per the US FDA bioanalytical guidelines over the concentration range of 9.79–4892.50 ng/mL (r2 ≥ 0.9951) for BAS from rat plasma. The mean percentage recovery (n = 3) for the low, middle and high quality control samples was 86.92 ± 3.89, 85.30 ± 1.09 and 87.24 ± 4.03%, respectively. The applicability of the validated HPLC‐MS/MS method was demonstrated by successful measurement of BAS from plasma following oral administration of Acorus calamus rhizome extracts to three female albino Wistar rats. Copyright © 2012 John Wiley & Sons, Ltd.
Simultaneous determination and pharmacokinetic study of polyphyllin I, polyphyllin II, polyphyllin VI and polyphyllin VII in beagle dog plasma after oral administration of Rhizoma Paridis extracts by LC‐MS‐MS
Authors: Yin Xingbin , Qu Changhai , Li Zhaoxia , Zhai Yujing , Cao Sali , Lin Longfei , Feng Lijun , Yan Lei , Ni Jian 
Published: August 2012

ABSTRACTFor the first time, a rapid and specific LC‐MS‐MS method has been developed for the analysis of polyphyllin I, polyphyllin II, polyphyllin VI and polyphyllin VII in beagle dog plasma. The method was applied to study the pharmacokinetics of Rhizoma Paridis extracts containing polyphyllin I, polyphyllin II, polyphyllin VI and polyphyllin VII. The analysis was carried out on an Agilent Zorbax XDB‐C18 reversed‐phase column (100 × 2.1 mm, 1.8 µm) by isocratic elution with acetonitrile and water (50:50, v/v). The flow rate was 0.25 mL/min. All analytes including internal standards were monitored by selected reaction monitoring with an electrospray ionization source. Linear responses were obtained for polyphyllin I, polyphyllin II, polyphyllin VI and polyphyllin VII ranging from 10 to 5000 ng/mL. The intra‐and inter‐day precisions (RSDs) were less than 6.66 and 9.15%. The extraction recovery ranged from 95.53 to 104.21% with RSD less than 8.69%. Stability studies showed that polyphyllin I, polyphyllin II, polyphyllin VI and polyphyllin VII were stable in preparation and analytical process. The validated method was successfully used to determine the concentration–time profiles of polyphyllin I, polyphyllin II, polyphyllin VI and polyphyllin VII. Copyright © 2012 John Wiley & Sons, Ltd.
Determination of fluoxetine enantiomers in pharmaceutical formulations by electrokinetic chromatography–counter current technique
Authors: Asensi‐Bernardi Lucía , Martín‐Biosca Yolanda , Fornet‐Herrero Eder , Sagrado Salvador , Medina‐Hernández María José 
Published: August 2012

ABSTRACTIn this work, an electrokinetic chromatography–counter current procedure for the separation of fluoxetine enantiomers using highly sulfated β‐cyclodextrin was optimized and applied to the determination of the enantiomers in three pharmaceutical formulations according to the matrix features. Quality criteria were applied to facilitate its transferability to testing laboratories. Fluoxetine was used therapeutically as the racemate, although a stereospecificity associated with its interactions with the neuronal serotonin‐uptake carrier was demonstrated. In this context, the development of enantioselective methods for the chiral analysis of pharmaceuticals allowing stereoisomer ratio estimations has increasing interest in pharmaceutical industry. The proposed method allows the quantification of both enantiomers in less than 2 min with high resolution (Rs = 2.4). Copyright © 2012 John Wiley & Sons, Ltd.
Biomarker‐driven trial in metastatic pancreas cancer: feasibility in a multicenter study of saracatinib, an oral Src inhibitor, in previously treated pancreatic cancer
Authors: Arcaroli John , Quackenbush Kevin , Dasari Arvind , Powell Rebecca , McManus Martine , Tan Aik‐Choon , Foster Nathan R. , Picus Joel , Wright John , Nallapareddy Sujatha , Erlichman Charles , Hidalgo Manuel , Messersmith Wells A. 
Published: August 2012

AbstractSrc tyrosine kinases are overexpressed in pancreatic cancers, and the oral Src inhibitor saracatinib has shown antitumor activity in preclinical models of pancreas cancer. We performed a CTEP‐sponsored Phase II clinical trial of saracatinib in previously treated pancreas cancer patients, with a primary endpoint of 6‐month survival. A Simon MinMax two‐stage phase II design was used. Saracatinib (175 mg/day) was administered orally continuously in 28‐day cycles. In the unselected portion of the study, 18 patients were evaluable. Only two (11%) patients survived for at least 6 months, and three 6‐month survivors were required to move to second stage of study as originally designed. The study was amended as a biomarker‐driven trial (leucine rich repeat containing protein 19 [LRRC19] > insulin‐like growth factor‐binding protein 2 [IGFBP2] “top scoring pairs” polymerase chain reaction [PCR] assay, and PIK3CA mutant) based on preclinical data in a human pancreas tumor explant model. In the biomarker study, archival tumor tissue or fresh tumor biopsies were tested. Biomarker‐positive patients were eligible for the study. Only one patient was PIK3CA mutant in a 3′ untranslated region (UTR) portion of the gene. This patient was enrolled in the study and failed to meet the 6‐month survival endpoint. As the frequency of biomarker‐positive patients was very low (<3%), the study was closed. Although we were unable to conclude whether enriching for a subset of second/third line pancreatic cancer patients treated with a Src inhibitor based on a biomarker would improve 6‐month survival, we demonstrate that testing pancreatic tumor samples for a biomarker‐driven, multicenter study in metastatic pancreas cancer is feasible.
ChemInform Abstract: New Nonlinear Optical Crystal: NaBa4Al2B8O18Cl3.
Authors: Zhang Jianxiu , Zhang Shufeng , Wu Yicheng , Wang Jiyang 
Published: August 2012

AbstractSingle crystals of the title compound with sizes up to 34 x 34 x 16 mm3 are prepared by the top‐seeded solution growth method using a 2:1 mixture of NaF and LiCl as a flux.
ChemInform Abstract: [Mn2(N3)5]n‐n: Four Different Azide Bridging Modes and Dicubane Subunits Observed in a New Mn(II)‐Azide only 2D System.
Authors: Mautner Franz A. , Sudy Beate , Egger Andreas , Mautner Eva M. , Escuer Albert , Vicente Ramon 
Published: August 2012

AbstractThe new, green title compound (II) (caution: azides are potentially explosive and should be handled with care) crystallizes in the triclinic space group P$\bar 1$ with Z = 2 (single crystal XRD).
ChemInform Abstract: Synthesis and Structural Characterization of a Tetra‐Cobalt(II)‐Substituted Sandwich‐Type Tungstophosphate, (1,3‐H2dap)2H4 [Co4(1,3‐Hdap)2 (α‐B‐PW9O34)2] ·3H2O.
Authors: Wang Zi‐Liang , Xi Hui‐Ping 
Published: August 2012

AbstractThe title compound (1,3‐dap: 1,3‐diaminopropane) is hydrothermally synthesized from a mixture of Na2WO4, NaH2PO4, CoCl2, Co(OAc)2, 1,3‐dap, and H2O (autoclave, 160 °C, 4 d, 16% yield).
ChemInform Abstract: A Highly Enantioselective Catalytic Strecker Reaction of Cyclic (Z)‐Aldimines.
Authors: Shao You‐Dong , Tian Shi‐Kai 
Published: August 2012

AbstractBoth enantiomers of nitriles (III) and (V) are prepared by Strecker reaction of 3H‐indoles (I) and benzothiazines (IV) with ethyl cyanoformate in the presence of a quinidine‐ or quinine‐based thiourea catalyst.
ChemInform Abstract: Metal‐Free, Aerobic Ketooxygenation of Alkenes Using Hydroxamic Acids.
Authors: Schmidt Valerie A. , Alexanian Erik J. 
Published: August 2012

AbstractThe radical‐mediated approach avoids the strongly oxidizing conditions necessary for transition metal catalyzed ketooxygenations, and proceeds with excellent regio‐ and stereoselectivity in all cases.
ChemInform Abstract: Palladium‐Catalyzed Heck‐Type Reactions of Allylic Esters with Arylboronic Acids or Potassium Aryltrifluoroborates.
Authors: Yao Bo , Liu Yan , Wang Meng‐Ke , Li Jin‐Heng , Tang Ri‐Yuan , Zhang Xing‐Guo , Deng Chen‐Liang 
Published: August 2012

AbstractDepending on the organoboron compound used, either 1,3‐diarylpropenes or 3‐arylalkylacetates are selectively accessible by the present protocol.
ChemInform Abstract: Indium Tri(isopropoxide)‐Catalyzed Selective Meerwein—Ponndorf—Verley Reduction of Aliphatic and Aromatic Aldehydes.
Authors: Lee Jaeyoung , Ryu Taekyu , Park Sangjune , Lee Phil Ho 
Published: August 2012

AbstractAliphatic and aromatic aldehydes are reduced to alcohols and a number of functional groups is tolerated.
ChemInform Abstract: Fast and Efficient Synthesis of Sulfinamides by the Oxidation of Sulfenamides Using Potassium Fluoride and m‐Chloroperoxybenzoic Acid.
Authors: Datta Mrityunjoy , Buglass Alan J. 
Published: August 2012

AbstractA fast and highly efficient oxidation of sulfenamides to the corresponding sulfinamides is achieved by use of the system MCPBA—KF.