Read by QxMD icon Read


Nora Franceschini, Cara L Carty, Yingchang Lu, Ran Tao, Yun Ju Sung, Ani Manichaikul, Jeff Haessler, Myriam Fornage, Karen Schwander, Niha Zubair, Stephanie Bien, Lucia A Hindorff, Xiuqing Guo, Suzette J Bielinski, Georg Ehret, Joel D Kaufman, Stephen S Rich, Christopher S Carlson, Erwin P Bottinger, Kari E North, D C Rao, Aravinda Chakravarti, Paula Q Barrett, Ruth J F Loos, Steven Buyske, Charles Kooperberg
Despite the substantial burden of hypertension in US minority populations, few genetic studies of blood pressure have been conducted in Hispanics and African Americans, and it is unclear whether many of the established loci identified in European-descent populations contribute to blood pressure variation in non-European descent populations. Using the Metabochip array, we sought to characterize the genetic architecture of previously identified blood pressure loci, and identify novel cardiometabolic variants related to systolic and diastolic blood pressure in a multi-ethnic US population including Hispanics (n = 19,706) and African Americans (n = 18,744)...
2016: PloS One
Niha Ansari, Anand Lodha, Shobhana K Menon
In this work, we report the smart application of AgNPs based sensors for determination of time since death (TSD) via recognition and quantification of vitreous humor (VH) cystine as well as provide the portability for on spot determination of TSD. The lower detection limit was found to be 7.0ng/ml with prominent selectivity. It was found that there is a linear correlation between the VH cystine concentration and TSD as the concentration of cystine increases up to 96h±3.9h. Further for the first time TSD determination is given a smart approach and it proves to have a great utility up to 24h±2...
December 15, 2016: Biosensors & Bioelectronics
Shahzad A Pandith, Niha Dhar, Satiander Rana, Wajid Waheed Bhat, Manoj Kushwaha, Ajai P Gupta, Manzoor A Shah, Ram Vishwakarma, Surrinder K Lattoo
Plants effectively defend themselves against biotic and abiotic stresses by synthesizing diverse secondary metabolites, including health-protective flavonoids. These display incredible chemical diversity and ubiquitous occurrence and confer impeccable biological and agricultural applications. Chalcone synthase (CHS), a type III plant polyketide synthase, is critical for flavonoid biosynthesis. It catalyzes acyl-coenzyme A thioesters to synthesize naringenin chalcone through a polyketidic intermediate. The functional divergence among the evolutionarily generated members of a gene family is pivotal in driving the chemical diversity...
August 2016: Plant Physiology
Ann-Katrein Bär, Niha Phukan, Jully Pinheiro, Augusto Simoes-Barbosa
Infections by parasitic protozoans are largely neglected, despite threatening millions of people, particularly in developing countries. With descriptions of the microbiota in humans, a new frontier of investigation is developing to decipher the complexity of host-parasite-microbiota relationships, instead of the classic reductionist approach, which considers host-parasite in isolation. Here, we review with specific examples the potential roles that the resident microbiota can play at mucosal interfaces in the transmission of parasitic protozoans and in the progress of infection and disease...
December 2015: PLoS Neglected Tropical Diseases
Niha Dhar, Sumeer Razdan, Satiander Rana, Wajid W Bhat, Ram Vishwakarma, Surrinder K Lattoo
Withania somnifera, a multipurpose medicinal plant is a rich reservoir of pharmaceutically active triterpenoids that are steroidal lactones known as withanolides. Though the plant has been well-characterized in terms of phytochemical profiles as well as pharmaceutical activities, limited attempts have been made to decipher the biosynthetic route and identification of key regulatory genes involved in withanolide biosynthesis. This scenario limits biotechnological interventions for enhanced production of bioactive compounds...
2015: Frontiers in Plant Science
Ulrike Peters, Stephanie Bien, Niha Zubair
Colorectal cancer (CRC) is a complex disease that develops as a consequence of both genetic and environmental risk factors. A small proportion (3-5%) of cases arise from hereditary syndromes predisposing to early onset CRC as a result of mutations in over a dozen well defined genes. In contrast, CRC is predominantly a late onset 'sporadic' disease, developing in individuals with no obvious hereditary syndrome. In recent years, genome wide association studies have discovered that over 40 genetic regions are associated with weak effects on sporadic CRC, and it has been estimated that increasingly large genome wide scans will identify many additional novel genetic regions...
October 2015: Gut
Cevahir Aydın, Haluk Ataoğlu
Candida albicans is a polymorphic fungus that may be observed as both commensal and opportunistic pathogen in humans. As one of the major components of Candida cell wall structure, mannan plays an important role in the fungus-host cell interaction and in virulence. The ability to switch from yeast to hypha form of microorganism is crutial in the development of C.albicans infections. Hyphal form has different antigenic properties compared to yeast form and structural changes occur in the yeast cell wall during transition from yeast to hypha form...
January 2015: Mikrobiyoloji Bülteni
Jian Gong, Niha Zubair
No abstract text is available yet for this article.
April 2015: International Journal of Epidemiology
Niha Zubair, Charles Kooperberg, Jingmin Liu, Chongzhi Di, Ulrike Peters, Marian L Neuhouser
BACKGROUND: The consumption and blood concentrations of lycopene are both positively and inversely associated with the risk of several chronic diseases. The inconsistences in lycopene disease association studies may stem from a lack of knowledge about the genetic variation in the synthesis, metabolism, and deposition of transport and binding proteins, which potentially influence serum lycopene concentrations. OBJECTIVE: We examined the association between variation across the genome and serum concentrations of lycopene in a multiethnic population...
February 2015: Journal of Nutrition
Satiander Rana, Wajid Waheed Bhat, Niha Dhar, Shahzad A Pandith, Sumeer Razdan, Ram Vishwakarma, Surrinder K Lattoo
BACKGROUND: Pharmacological investigations position withanolides as important bioactive molecules demanding their enhanced production. Therefore, one of the pivotal aims has been to gain knowledge about complete biosynthesis of withanolides in terms of enzymatic and regulatory genes of the pathway. However, the pathway remains elusive at the molecular level. P450s monooxygenases play a crucial role in secondary metabolism and predominantly help in functionalizing molecule core structures including withanolides...
2014: BMC Biotechnology
Wajid Waheed Bhat, Sumeer Razdan, Satiander Rana, Niha Dhar, Tariq Ahmad Wani, Parvaiz Qazi, Ram Vishwakarma, Surrinder K Lattoo
Picrorhiza kurrooa Royle ex Benth. is a highly reputed medicinal herb utilised in the preparation of a number of herbal drug formulations, principally due to the presence of novel monoterpene iridoid glycosides kenned as picrosides. Phenylalanine ammonia-lyase catalyses an important rate-limiting step in phenylpropanoid pathway and supplies precursors like cinnamic acid, vanillic acid, ferulic acid, etc., to a variety of secondary metabolites including picrosides. The imperilled status of P. kurrooa coupled with lack of information regarding biogenesis of picrosides necessitates deciphering the biosynthetic pathway for picrosides...
September 1, 2014: Gene
Niha Dhar, Satiander Rana, Sumeer Razdan, Wajid Waheed Bhat, Aashiq Hussain, Rekha S Dhar, Samantha Vaishnavi, Abid Hamid, Ram Vishwakarma, Surrinder K Lattoo
Oxidosqualene cyclases (OSCs) positioned at a key metabolic subdividing junction execute indispensable enzymatic cyclization of 2,3-oxidosqualene for varied triterpenoid biosynthesis. Such branch points present favorable gene targets for redirecting metabolic flux toward specific secondary metabolites. However, detailed information regarding the candidate OSCs covering different branches and their regulation is necessary for the desired genetic manipulation. The aim of the present study, therefore, was to characterize members of OSC superfamily from Withania somnifera (Ws), a medicinal plant of immense repute known to synthesize a large array of biologically active steroidal lactone triterpenoids called withanolides...
June 13, 2014: Journal of Biological Chemistry
Niha Zubair, Chris W Kuzawa, Nanette R Lee, Thomas W McDade, Linda S Adair
BACKGROUND: With modernization, cardiometabolic disease risk has increased in low and middle-income countries. To better understand cardiometabolic disease etiology, we evaluated the patterning risk factors in a susceptible young adult population. METHODS AND RESULTS: Participants included 1,621 individuals from the 2005 Cebu Longitudinal Health and Nutrition Survey. Using cluster analysis, we grouped individuals by the following biomarkers: triglycerides, HDL and LDL cholesterol, C-reactive protein, blood pressure, homeostasis model assessment of insulin resistance, and fasting glucose...
2014: Asia Pacific Journal of Clinical Nutrition
Wajid Waheed Bhat, Satiander Rana, Niha Dhar, Sumeer Razdan, Shahzad A Pandith, Ram Vishwakarma, Surrinder K Lattoo
Picrorhiza kurrooa synthesizes a large array of pharmacologically important monoterpenoid iridoid glycosides called picrosides. Although chemical profile and pharmacological activities of P. kurrooa have been extensively studied, limited attempts have been made to decipher the biosynthetic route and to identify the key regulatory genes involved in picroside biosynthesis. In the present study, NADPH-cytochrome P450 reductase, a key enzyme involved in electron transfer to cytochrome P450s was identified from P...
June 2014: Functional & Integrative Genomics
Niha Dhar, Satiander Rana, Wajid Waheed Bhat, Sumeer Razdan, Shahzad A Pandith, Shabnam Khan, Prabhu Dutt, Rekha S Dhar, Samantha Vaishnavi, Ram Vishwakarma, Surrinder K Lattoo
Withania somnifera (L.) Dunal synthesizes large array of pharmacologically active secondary metabolites known as withanolides. It has been extensively investigated in terms of chemistry and bioactivity profiling. However, there exists fragmentary information about the dynamics of withanolide biosynthesis at different phenophases in concert with the expression analysis of key pathway genes. In the present study, two morpho-chemovariants of W. somnifera were harvested at five developmental stages, dissected into leaf and root tissues and assayed for three major withanolides viz...
December 2013: Molecular Biology Reports
Wajid Waheed Bhat, Niha Dhar, Sumeer Razdan, Satiander Rana, Rukmankesh Mehra, Amit Nargotra, Rekha S Dhar, Nasheeman Ashraf, Ram Vishwakarma, Surrinder K Lattoo
Uridine diphosphate glycosyltransferases (UGTs) are pivotal in the process of glycosylation for decorating natural products with sugars. It is one of the versatile mechanisms in determining chemical complexity and diversity for the production of suite of pharmacologically active plant natural products. Picrorhiza kurrooa is a highly reputed medicinal herb known for its hepato-protective properties which are attributed to a novel group of iridoid glycosides known as picrosides. Although the plant is well studied in terms of its pharmacological properties, very little is known about the biosynthesis of these important secondary metabolites...
2013: PloS One
Niha Mohan Kulshreshtha, Rita Kumar, Zareena Begum, S Shivaji, Anil Kumar
A facultatively anaerobic, alkaliphilic, Gram-stain-positive, rod-shaped bacterium, designated strain 12/1(T), isolated from alkaline wastewater drained sludge of a beverage industry facility located near New Delhi, India, was subjected to a polyphasic taxonomic study. Phylogenetic analysis based on 16S rRNA gene sequence comparisons revealed that strain 12/1(T) belonged to the genus Exiguobacterium and was most closely related to Exiguobacterium aurantiacum DSM 6208(T) (99.46 %), E. aquaticum IMTB-3094(T) (99...
December 2013: International Journal of Systematic and Evolutionary Microbiology
Cheryl Juneau, Elnora Nonie P Mendias, Nihas Wagal, Michael Loeffelholz, Tor Savidge, Sharon Croisant, Sara Dann
The epidemiology of Clostridium difficile infection (CDI) is changing. CDI, usually depicted as a nosocomial infection in the elderly, is now occurring in community-dwelling persons who are younger and otherwise dissimilar. A more virulent isolate (North American Pulsed Field type 1 (NAP1) associated with increased morbidity and mortality, has been identified. In 2005, similar strains were associated with severe disease in community-dwelling patients at a rate of 7.6/100,000. Screening patients with potential CDI symptoms and implementing preventative measures, including judicious use of antibiotics, can reduce disease burden...
January 2013: Journal for Nurse Practitioners: JNP
Niha Phukan, Tina Parsamand, Anna E S Brooks, Tan N M Nguyen, Augusto Simoes-Barbosa
OBJECTIVES: Trichomoniasis is a common sexually transmitted disease, and adhesion of the pathogen Trichomonas vaginalis to the host vaginal cells is the first step in establishing infection. For this to happen, the pathogen has to overcome a natural protective barrier composed mostly of lactobacilli. The objective of this study was to understand the role of lactobacilli in the adhesion of T vaginalis to host cells. METHODS: Adhesion assays were carried out by incubating vaginal epithelial cells (VECs) with T vaginalis and lactobacilli together and compared with non-lactobacilli recipient controls...
September 2013: Sexually Transmitted Infections
Manash Chandra Majhi, Abhisek Kumar Behera, Niha Mohan Kulshreshtha, Mahmooduzafar, Rita Kumar, Anil Kumar
Extremophiles are the microorganisms which can survive under extreme conditions of temperature, pressure, pH, salinity etc. They have gained much attention for their potential role in biotechnological and industrial applications. The large amount of experimental data in the literature is so diverse, that it becomes difficult and time consuming for the researcher to implement it in various areas of research. Therefore, a systematic arrangement of data and redirection in a similar fashion through web interface can assist researchers in analyzing the data as per their requirement...
2013: PloS One
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"