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Alain C Tagne Kuate, Roger A Lalancette, F Jäkle
The synthesis of ferrocenylphosphine-borane adducts 1,2-fc(E)(PPh2·BH3) (E = SnR2R', HgX; 1,2-fc = 1,2-ferrocenediyl) that are substituted with organotin or organomercury Lewis acid moieties in ortho-position is presented. Several compounds that feature two ferrocenylphosphine-borane moieties bridged by Sn or Hg are also introduced. The products are fully characterized by multinuclear NMR spectroscopy, high-resolution MALDI-TOF mass spectrometry and elemental analysis. The attachment of the Lewis acid substituent to the same Cp ring of the ferrocene results in planar-chirality and the close proximity between the boron hydride group and the Lewis acid is expected to allow for agostic-type B-HE (E = Sn, Hg) interactions...
May 16, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
Piotr Skrzypczyk, Małgorzata Mizerska-Wasiak, Barbara Jerszow, Paweł Ruszczykowski, Małgorzata Pańczyk-Tomaszewska
AIM: Evaluation of mean blood pressure values, ambulatory arterial stiffness index (AASI), pulse pressure (PP), blood pressure variability (BPV), and circadian blood pressure rhythm using ambulatory blood pressure monitoring (ABPM) in children with IgA nephropathy and Henoch-Schönlein nephropathy (IgAN/HSN). MATERIAL AND METHODS: In 48 children (29 with IgAN, 19 with HSN) aged 14.04 ± 3.76 years, we evaluated retrospectively 24-hour systolic and diastolic BP (24hSBP, 24hDBP), AASI, PP, systolic and diastolic BPV, and nocturnal BP dip by ABPM, body mass index (BMI) Z-score, medications, and biochemical parameters...
April 13, 2017: Clinical Nephrology
Tarek Trabelsi, Saida Ben Yaghlane, Muneerah Mogren Al Mogren, Joseph S Francisco, Majdi Hochlaf
Ab initio methods in conjunction with a large basis set are used to compute the potential energy surfaces of the 12 lowest electronic states of the HNS(+) and HSN(+) isomeric forms. These potentials are used in discussions of the metastability of these cations and plausible mechanisms for the H(+)/H + SN(+)/SN, S/S(+) + NH(+)/NH, N/N(+) + SH(+)/SH ion-molecule reactions. Interestingly, the low rovibrational levels of HSN(+)(1(2)A″) and HNS(+)(1(2)A″) electronically excited ions are predicted to be long-lived...
August 28, 2016: Journal of Chemical Physics
P Skrzypczyk, M Panczyk-Tomaszewska, J Przychodzien, M Mizerska-Wasiak, E Kuzma-Mroczkowska, E Gorska, A Stelmaszczyk-Emmel
OBJECTIVE: Renalase is a protein produced mainly by kidneys. Renalase inactivates circulating catecholamines catalyzing process of their oxidation. Studies in adults with kidney disease suggest that renalase may play a role in pathogenesis of hypertension and target organ damage. The aim of the study was to assess level of renalase in children with glomerular kidney diseases and to find the relation between renalase level and clinical parameters in this group of patients. DESIGN AND METHOD: In 78 children (47 M, 31F) aged from 3...
September 2016: Journal of Hypertension
Christine Migliorini, Joanne Enticott, Libby Callaway, Sophie Moore, Barry Willer
OBJECTIVES: To determine level of community integration in adults with traumatic brain injury and high support needs (TBI-HSN) compared with multiple matched controls. SETTING: Community setting, Victoria, Australia. PARTICIPANTS: Adults with TBI-HSN living in the community (n = 61). Australian normative data (n = 1973) was used for matching purposes (1:4). DESIGN: Matched analysis from people with and without TBI. Matching aimed to reduce variability expected from age, gender, metropolitan/rural residence and co-resident status...
2016: Brain Injury: [BI]
Beom Jin Lim, Jae Il Shin, Sung-Eun Choi, Hyechang Rhim, Jae Seung Lee, Pyung Kil Kim, Hyeon Joo Jeong, Ji Hong Kim
BACKGROUND: Little information is currently available on the development of tubulointerstitial lesions in children with Henoch-Schönlein nephritis (HSN). To identify the impact of the development of tubulointerstitial changes in HSN, we retrospectively analyzed renal biopsies obtained from children with HSN. METHODS: Twenty-eight children with HSN from whom serial renal biopsies had been obtained before and after immunosuppressive therapy were enrolled in the study...
November 2016: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
Soltysiak Jolanta, Zachwieja Jacek, Benedyk Anna, Lewandowska-Stachowiak Maria, Nowicki Michal, Ostalska-Nowicka Danuta
BACKGROUND: The increase of circulating urokinase plasminogen activator receptor (suPAR) was demonstrated in various diseases showing its prognostic value as well as the link to the inflammatory reaction. In glomerular diseases suPAR was consider to be a causative factor of proteinuria. In present study we aimed to evaluate serum concentration of suPAR in children with primary and secondary glomerulonephritis (GN) and its association with disease severity. METHODS: The study involved 22 children with minimal change disease (MCD), 9 with primary focal segmental glomerulosclerosis (FSGS), 7 with Henoch-Schönlein nephritis (HSN), 7 with lupus nephritis (LN) and 16 controls...
April 12, 2016: Minerva Pediatrica
Kaan Polatoğlu, Seniha Arsal, Betül Demirci, Kemal Hüsnü Can Başer
Lathyrus species including L. ochrus and L. sativus are known for their food, feed and horticultural uses. Despite their widespread uses and cultivation, there is limited information on their chemistry. Previously, only the essential oil composition of L. rotundifolius, L. vernus and volatiles of L. odoratus have been reported. In the present research, volatiles of seven Lathyrus L. species, namely, L. aphaca, L. ochrus, L. cicera, L. sativus, L. gorgonei, L. saxatilis and L. blepharicarpos var. cyprius were analyzed by SPME GC-MS for the first time...
2016: Journal of Oleo Science
Andreas S Andersen, Hüsnü Aslan, Mingdong Dong, Xingyu Jiang, Duncan S Sutherland
We studied podosome formation and development in activated monocytes (THP1) at ICAM1 (intercellular adhesion molecule 1) nanopatterns of circular and ring-shaped domains and show that cellular binding to a preclustered ICAM1 nanopattern requires ligand patches of at least 200 nm (corresponding to 14 or more integrins). Podosome-like adhesion formation depends on the structure of the ligand pattern under the developing podosome with larger single domains promoting adhesion in a single patch and multiple smaller domains allowing podosome formation by integration of at least 2 smaller domains on either side of the podosome core...
March 9, 2016: Nano Letters
Yeeli Mui, Bruce Y Lee, Atif Adam, Anna Y Kharmats, Nadine Budd, Claudia Nau, Joel Gittelsohn
BACKGROUND: Products in corner stores may be affected by the network of suppliers from which storeowners procure food and beverages. To date, this supplier network has not been well characterized. METHODS: Using network analysis, we examined the connections between corner stores (n = 24) in food deserts of Baltimore City (MD, USA) and their food/beverage suppliers (n = 42), to determine how different store and supplier characteristics correlated. RESULTS: Food and beverage suppliers fell into two categories: Those providing primarily healthy foods/beverages (n = 15) in the healthy supplier network (HSN) and those providing primarily unhealthy food/beverages (n = 41) in the unhealthy supplier network (UHSN)...
November 30, 2015: International Journal of Environmental Research and Public Health
George R Helz
BACKGROUND: Ionic and molecular carriers of dissolved (filter-passing) zero-valent sulfur (S(0)) in anaerobic natural waters include polysulfides, Sn (2-), molecular S8(aq), organic macromolecules and certain higher valent thioanions. Because S(0) is rapidly transferred among these various carriers, its biogeochemical roles in such processes as dehalogenation of organic compounds, chelation of trace metals, and anaerobic microbial metabolism are not determined solely by one ionic or molecular species...
2014: Geochemical Transactions
Yan Xu, Hidenori Taru, Yishi Jin, Christopher C Quinn
During development, axons must integrate directional information encoded by multiple guidance cues and their receptors. Axon guidance receptors, such as UNC-40 (DCC) and SAX-3 (Robo), can function individually or combinatorially with other guidance receptors to regulate downstream effectors. However, little is known about the molecular mechanisms that mediate combinatorial guidance receptor signaling. Here, we show that UNC-40, SAX-3 and the SYD-1 RhoGAP-like protein function interdependently to regulate the MIG-2 (Rac) GTPase in the HSN axon of C...
April 2015: PLoS Genetics
Scott E Stimpson, Jens R Coorssen, Simon J Myers
Axonal degeneration is the final common path in many neurological disorders. Subsets of neuropathies involving the sensory neuron are known as hereditary sensory neuropathies (HSNs). Hereditary sensory neuropathy type I (HSN-I) is the most common subtype of HSN with autosomal dominant inheritance. It is characterized by the progressive degeneration of the dorsal root ganglion (DRG) with clinical symptom onset between the second or third decade of life. Heterozygous mutations in the serine palmitoyltransferase (SPT) long chain subunit 1 (SPTLC1) gene were identified as the pathogenic cause of HSN-I...
January 2015: Journal of Chemical Biology
Daniel J Mindiola, Rory Waterman, Vlad M Iluc, Thomas R Cundari, Gregory L Hillhouse
The three-coordinate imidos (dtbpe)Ni═NR (dtbpe = (t)Bu2PCH2CH2P(t)Bu2, R = 2,6-(i)Pr2C6H3, 2,4,6-Me3C6H2 (Mes), and 1-adamantyl (Ad)), which contain a legitimate Ni-N double bond as well as basic imido nitrogen based on theoretical analysis, readily deprotonate HC≡CPh to form the amide acetylide species (dtbpe)Ni{NH(Ar)}(C≡CPh). In the case of R = 2,6-(i)Pr2C6H3, reductive carbonylation results in formation of the (dtbpe)Ni(CO)2 along with the N-C coupled product keteneimine PhCH═C═N(2,6- (i)Pr2C6H3)...
December 15, 2014: Inorganic Chemistry
Xia Tang, William G Wadsworth
Axons in Caenorhabditis elegans are guided by multiple extracellular cues, including UNC-6 (netrin), EGL-20 (wnt), UNC-52 (perlecan), and SLT-1 (slit). How multiple extracellular cues determine the direction of axon guidance is not well understood. We have proposed that an axon's response to guidance cues can be modeled as a random walk, i.e., a succession of randomly directed movement. Guidance cues dictate the probability of axon outgrowth activity occurring in each direction, which over time creates a directional bias...
2014: PloS One
Tarja K Kinnunen
Heparan sulfate proteoglycans (HSPGs) play critical roles in the development and adult physiology of all metazoan organisms. Most of the known molecular interactions of HSPGs are attributed to the structurally highly complex heparan sulfate (HS) glycans. However, whether a specific HSPG (such as syndecan) contains HS modifications that differ from another HSPG (such as glypican) has remained largely unresolved. Here, a neural model in C. elegans is used to demonstrate for the first time the relationship between specific HSPGs and HS modifications in a defined biological process in vivo...
2014: PloS One
S Ben Yaghlane, N-E Jaidane, C E Cotton, J S Francisco, M M Al Mogren, R Linguerri, M Hochlaf
We performed accurate ab initio investigations of the geometric parameters and the vibrational structure of neutral HNS/HSN triatomics and their singly charged anions and cations. We used standard and explicitly correlated coupled cluster approaches in connection with large basis sets. At the highest levels of description, we show that results nicely approach those obtained at the complete basis set limit. Moreover, we generated the three-dimensional potential energy surfaces (3D PESs) for these molecular entities at the coupled cluster level with singles and doubles and a perturbative treatment of triple excitations, along with a basis set of augmented quintuple-zeta quality (aug-cc-pV5Z)...
June 28, 2014: Journal of Chemical Physics
Vijay R Chavan, Deepali Chaudhari, Swati Ahir, Zakiya Ansari, Preeti Mehta, Jayanti Mania-Pramanik
BACKGROUND: NK cells have anti-HIV activity mediated through killer cell immunoglobulin-like receptors (KIRs). The current prospective cohort study evaluated whether variation in KIR genes is associated with HIV infection in discordant couples (DCs), where one spouse remains seronegative (HSN) despite repeated exposure to the HIV. METHODS: KIR was genotyped using PCR SSP. Viral load and CD4 counts were estimated using commercially available reagents. Data were analyzed using SPSS software...
2014: BioMed Research International
Yong Yang, Won Suk Lee, Xia Tang, William G Wadsworth
How extracellular molecules influence the direction of axon guidance is poorly understood. The HSN axon of Caenorhabditis elegans is guided towards a ventral source of secreted UNC-6 (netrin). The axon's outgrowth response to UNC-6 is mediated by the UNC-40 (DCC) receptor. We have proposed that in response to the UNC-6 molecule the direction of UNC-40-mediated axon outgrowth is stochastically determined. The direction of guidance is controlled by asymmetric cues, including the gradient of UNC-6, that regulate the probability that UNC-40-mediated axon outgrowth is directed on average, over time, in a specific direction...
2014: PloS One
Lee L Marshall, Scott E Stimpson, Ryan Hyland, Jens R Coorssen, Simon J Myers
Hereditary sensory neuropathy type 1 (HSN-1) is an autosomal dominant neurodegenerative disease caused by missense mutations in the SPTLC1 gene. The SPTLC1 protein is part of the SPT enzyme which is a ubiquitously expressed, critical and thus highly regulated endoplasmic reticulum bound membrane enzyme that maintains sphingolipid concentrations and thus contributes to lipid metabolism, signalling, and membrane structural functions. Lipid droplets are dynamic organelles containing sphingolipids and membrane bound proteins surrounding a core of neutral lipids, and thus mediate the intracellular transport of these specific molecules...
April 2014: Journal of Chemical Biology
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