Buffers

Publication Title: 
Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research

Plant-derived medicines have been a part of our traditional health care system, and the antimicrobial properties of plant-derived compounds are well documented. The purpose of this study is to evaluate the effect of an aqueous extract of Terminalia chebula (a medicinal plant) on salivary samples and its potential for use as an anticaries agent in the form of mouthwash. A concentrated aqueous extract was prepared from the fruit of T. chebula . A mouth rinse of 10% concentration was prepared by diluting the extract in sterile distilled water.

Author(s): 
Carounanidy, Usha
Satyanarayanan, R.
Velmurugan, A.
Publication Title: 
Psychological Medicine

BACKGROUND: The evolutionary consequences of love are so important that there must be some long-established biological process regulating it. Recent findings suggest that the serotonin (5-HT) transporter might be linked to both neuroticism and sexual behaviour as well as to obsessive-compulsive disorder (OCD). The similarities between an overvalued idea, such as that typical of subjects in the early phase of a love relationship, and obsession, prompted us to explore the possibility that the two conditions might share alterations at the level of the 5-HT transporter.

Author(s): 
Marazziti, D.
Akiskal, H. S.
Rossi, A.
Cassano, G. B.
Publication Title: 
Emotion (Washington, D.C.)

Emerging evidence suggests that high resting heart rate variability in the respiratory frequency band, or respiratory sinus arrhythmia (RSA) may capture individual differences in the capacity to engage in situationally appropriate regulation of affect and behavior. The authors therefore hypothesized that high RSA may act as a protective factor against difficulties controlling negative affect and hostile behaviors in conflicts with romantic partners in highly rejection-sensitive individuals--a population otherwise vulnerable to these responses.

Author(s): 
Gyurak, Anett
Ayduk, Ozlem
Publication Title: 
Masui. The Japanese Journal of Anesthesiology

The present investigation dealt with the effect of simultaneous administration of flumazenil on the hypnotic activity of propofol using a behavioral model of ddY mice. The mixed solution of propofol and flumazenil was administered intravenously into the mice tail vein and the achievement of hypnosis was defined as the loss of the righting reflex. Flumazenil 0.2 mg.kg-1 significantly decreased the required dose of propofol for hypnosis (8.43 +/- 0.46 mg.kg-1) compared to the control group (10.55 +/- 0.55 mg.kg-1).

Author(s): 
Adachi, Y.
Watanabe, K.
Uchihashi, Y.
Higuchi, H.
Satoh, T.
Publication Title: 
Memórias Do Instituto Oswaldo Cruz

The vast majority of the 1-2 million malaria associated deaths that occur each year are due to anemia and cerebral malaria (the attachment of erythrocytes containing mature forms of Plasmodium falciparum to the endothelial cells that line the vascular beds of the brain). A "model system" for the study of cerebral malaria employs amelanotic melanoma cells as the "target" cells in an in vitro cytoadherence assay.

Author(s): 
Smith, H.
Crandall, I.
Prudhomme, J.
Sherman, I. W.
Publication Title: 
Chemical & Pharmaceutical Bulletin

Artemisinin, a sesquiterpene with endoperoxide bond, possesses potent antimalarial activity against the ring and late stage of chloroqine-resistant Plasmodium falciparum malaria both in vitro and in vivo. The mode of antimalarial activity of artemisinin is iron-dependent. The aim of this study was to investigate the reactions of artemisinin with ferrous and ferric ions in aqueous buffer. Artemisinin generated a cycle of iron oxidation and reduction.

Author(s): 
Sibmooh, N.
Udomsangpetch, R.
Kujoa, A.
Chantharaksri, U.
Mankhetkorn, S.
Publication Title: 
PloS One

BACKGROUND: Recent studies have demonstrated that several mineral products sold for medicinal purposes demonstrate antimicrobial activity, but little is known about the physicochemical properties involved in antibacterial activity. METHODOLOGY/PRINCIPAL FINDINGS: Using in vitro mineral suspension testing, we have identified two natural mineral mixtures, arbitrarily designated BY07 and CB07, with antibacterial activity against a broad-spectrum of bacterial pathogens.

Author(s): 
Cunningham, Tanya M.
Koehl, Jennifer L.
Summers, Jack S.
Haydel, Shelley E.
Publication Title: 
British Journal of Cancer

BACKGROUND: Clinical positron emission tomography imaging has demonstrated the vast majority of human cancers exhibit significantly increased glucose metabolism when compared with adjacent normal tissue, resulting in an acidic tumour microenvironment. Recent studies demonstrated reducing this acidity through systemic buffers significantly inhibits development and growth of metastases in mouse xenografts.

Author(s): 
Martin, N. K.
Robey, I. F.
Gaffney, E. A.
Gillies, R. J.
Gatenby, R. A.
Maini, P. K.
Publication Title: 
Journal of Proteomics

The extracellular matrix (ECM) is a critical tissue component, providing structural support as well as important regulatory signaling cues to govern cellular growth, metabolism, and differentiation. The study of ECM proteins, however, is hampered by the low solubility of ECM components in common solubilizing reagents. ECM proteins are often not detected during proteomics analyses using unbiased approaches due to solubility issues and relatively low abundance compared to highly abundant cytoplasmic and mitochondrial proteins.

Author(s): 
de Castro Brás, Lisandra E.
Ramirez, Trevi A.
DeLeon-Pennell, Kristine Y.
Chiao, Ying Ann
Ma, Yonggang
Dai, Qiuxia
Halade, Ganesh V.
Hakala, Kevin
Weintraub, Susan T.
Lindsey, Merry L.
Publication Title: 
Journal of Zhejiang University. Science. B

Central composite design (CCD), together with multiple linear regression, was successfully used to optimize the electrophoretic buffer system of micellar electrokinetic capillary chromatography (MEKC) for the determination of albiflorin, paeoniflorin, liquiritin, and glycyrrhizic acid in the traditional Chinese medicine (TCM) prescription, Yangwei granule. Concentrations of sodium deoxycholate (SDC) and borate, and proportions of ammonia, acetonitrile, and methanol were optimized.

Author(s): 
Wang, Shu-Fang
Fang, Hai-yan
Qu, Hai-bin
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