Background: The major intrinsic proteins (MIPs) facilitate the transport of water and neutral solutes across the lipid bilayers. Plant MIPs are believed to be important in cell division and expansion and in water transport properties in response to environmental conditions. More than 30 MIP sequences have been identified in Arabidopsis thaliana, maize and rice. Plasma membrane intrinsic proteins (PIPs), tonoplast intrinsic proteins (TIPs), Nod26-like intrinsic protein (NIPs) and small and basic intrinsic proteins (SIPs) are subfamilies of plant MIPs. Despite sequence diversity, all the experimentally determined structures belonging to the MIP superfamily have the same "hourglass" fold.
BackgroundTuberculous meningitis (TBM) is the most common form of neurotuberculosis and the fifth most common form of extrapulmonary TB. Early diagnosis and prompt treatment are the cornerstones of effective disease management. The accurate diagnosis of TBM poses a challenge due to an extensive differential diagnosis, low bacterial load and paucity of cerebrospinal fluid (CSF) especially in children.Methodology/Principal FindingsWe describe the utility of ELISA and qPCR for the detection of Mycobacterium tuberculosis (M. tb) proteins (GlcB, HspX, MPT51, Ag85B and PstS1) and DNA for the rapid diagnosis of TBM. CSF filtrates (n = 532) derived from children were classified as ‘Definite’ TBM (M. tb culture positive, n = 29), ‘Probable and Possible’ TBM (n = 165) and ‘Not-TBM’ including other cases of meningitis or neurological disorders (n = 338). ROC curves were generated from ELISA and qPCR data of ‘Definite’ TBM and Non-Tuberculous infectious meningitis (NTIM) samples and cut-off values were derived to provide ≥95% specificity. devR qPCR, GlcB, HspX and PstS1 ELISAs showed 100% (88;100) sensitivity and 96–97% specificity in ‘Definite’ TBM samples. The application of these cut-offs to ‘Probable and Possible’ TBM groups yielded excellent sensitivity (98%, 94;99) and specificity (98%, 96;99) for qPCR and for GlcB, HspX and MPT51 antigen ELISAs (sensitivity 92–95% and specificity 93–96%). A test combination of qPCR with GlcB and HspX ELISAs accurately detected all TBM samples at a specificity of ∼90%. Logistic regression analysis indicated that these tests significantly added value to the currently used algorithms for TBM diagnosis.ConclusionsThe detection of M. tb GlcB/HspX antigens/devR DNA in CSF is likely to improve the utility of existing algorithms for TBM diagnosis and also hasten the speed of diagnosis.
Purpose – The purpose of this paper is to report a study of post-integration mechanisms carried out by five multinational mergers and acquisitions (M & A) transactions taken place in Indian context. This study has been woven around the concept of human integration and task integration as separate objectives of acquiring organizations to be achieved. Design/methodology/approach – This study is based on descriptive research design. Qualitative data were collected, where the managers from the acquiring organizations and employees from the acquired firms have taken part in the data collection process through interviews. Interview schedule was developed for managers consisting questions on organizations’ strategy to achieve success post-M & A integration (PMI), while interview schedule developed for employees investigated their reactions after organizational change. Findings – Results revealed that the organizations where human integration mechanisms were given due credence also harbored highly committed employees from their organizational counterparts, whereas the transactions where task integration objective was given preference while ignoring human integration, employees developed the negative emotions of anger and insecurity for their newly merged firm. Research limitations/implications – The M & A literature observes a huge gap in the field of M & As in India, especially in PMI mechanisms worldwide, as the emphasis has always been on financial and operational aspects of M & As. Thus, this study addresses this gap in research and opens the avenues for M & A researchers to consider HR as the strategic partner during M & As. Practical implications – The study has important implications for MNCs operating in India and for those which want to excel the Indian market through M & A. Originality/value – This paper is based on the original field work and every information given is authentic.
Purpose Building on social exchange theory, this study aims to propose a research model to examine the relationship between servant leadership (SL) and employee affective commitment (AC) where psychological ownership (PO) and person–organization fit are theorized to play a mediating role. Design/methodology/approach The study used quantitative research methods with a deductive approach to examine the proposed relationships and the underlying mechanisms. Data were collected from 346 employees working at higher education sector in Palestine. Data were analyzed using structural equation modeling. Findings The results reveal a significant mediating role of PO and person – organization (P-O) fit in explaining the relationship between SL and employee AC. Results indicate that the service orientation and humble attitude of servant leaders toward employees help employees develop a sense of ownership, leading to a better fit with organizational values and thus to a more committed workforce. Practical implications The results of this study may be useful for managers working in higher education in a non-Western context who are considering using SL behaviors to improve outcomes. Originality/value The study advances SL research currently in its early stages (Zhang et al., 2019). Moreover, it increases understanding of the mediating roles played by PO and P-O fit.
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