Displaying publications 41 - 60 of 72 in total

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  1. Mohammad Aziz Shah MA, Yusooff F
    Jurnal Psikologi Malaysia, 2010;olume 24:31-47.
    The objective of this experimental study is to investigate the effectiveness of smalla dn big group guidance on the self-concept of the adolescence, using cognitive behaviour therapy and multidimentional self-concept model. The effectiveness of this interventions is measured by looking at the improvement of self concept and the evaluation of self concept by peer group, resiliency and decrease of aggressiveness in the experiment group. This research was carried out among the form four student of two secondary schools in Selangor. The measurement used in this study are questionnaire about personal information, Multi dimentional self concept scale. resiliency scale and aggressiveness scale. A total of 104 subject were selected for this research and they were divided into two groups: controlled and experimental group. The subject in experimental group are given about eight sessions of group guidance within eight weeks. The data were analysed using descriptive analysis, ANOVA, MANCOVA and post hoc test. The result showed that the treatment used in the intervention were effective in improving the self concept and the evaluation of the self concept. The finding implies that the small and big group guidance using cognitive behaviour therapy and multi dimentional self concept model has an effect on the self concept of the student.
    Matched MeSH terms: Nerve Tissue Proteins
  2. Souad Neffar, Haroun Chenchouni, Arifa Beddiar
    Sains Malaysiana, 2015;44:671-680.
    Mycorrhizal fungi are an essential component to consider for better management of soil fertility, particularly in
    degraded rangelands of drylands. The present article presents a field survey of colonization and intensity of arbuscular
    mycorrhizal fungi (AMF) on prickly pear (Opuntia ficus-indica) roots from young (5 years old) and old (more than 20
    years) plantations. The results observed were explained by seasonality and edaphic factors. Prickly pear roots showed
    a mycorrhizal frequency (F%) up to 100% of colonization and a mycorrhizal intensity (M%) that may exceed 70%.
    According to ANOVAs, both F% and M% varied significantly between Prickly pear plantation ages, but only M% between
    seasons. The Generalized linear model showed that edaphic factors have no effect on the variation of F%. However
    the statistical model showed that M% were significantly influenced by active CaCO3
    , organic matter, carbon, nitrogen,
    phosphorus contents and C/N. Our findings highlight the importance of mycorrhization in rehabilitation programs of
    degraded rangelands by prickly pear plantations in semiarid and arid lands, particularly during early plant ages and
    under environmental abiotic stresses such as climate and soil type.
    Matched MeSH terms: Nerve Tissue Proteins
  3. Inam Ali Shah, Sultan Mehmod Wazir, Rahmat Ali Khan
    Sains Malaysiana, 2017;46:117-122.
    Effects of different doses of fertilizers on growth and yield components of biodiesel plant (Jatropha curcas L.), was
    made in the prevailing environment of University of Science and Technology Bannu. The experiment was carried out in
    randomized complete block design (RCBD) with three replications. Nitrogen, phosphorus and potassium were applied
    in the form of urea, single super phosphate and potash in the shape of combined NPK, respectively, during sprouting
    of leaves and thereafter with each irrigation in split doses. The analysis of variance for number of branches per plant
    showed significant results indicated in ANOVA. Significantly the number of primary branches per plant 8.07 was recorded
    in T4 with the application of dose of (N P K: 2507.5 gm: 1091.5 gm: 501.5 gm). Maximum No. of secondary branches
    per plant (9.100) were recorded in T1 especially at both plots. Flower per inflorescence showed that maximum value
    (122.810) was recorded in T5 of especially at both plots. Inflorescence plant-1 showed that maximum value (39.477) were
    recorded in T1 and minimum value were noted as (12.733) at T3 on both the flats. The data for fruits per plant showed
    that maximum value (143.300) was recorded in T1. The seed index, which was the output of the aim of this research work,
    reflects highly significant differences in mean value observed for both subplots. Mean values showed that maximum seeds
    weight 45.86 was recorded in T1 of especially at both plots while low seed index was noted as 22.84 at T5 (N: 3400 gm,
    P: 1480 gm, K: 680 gm) at both the subplots.
    Matched MeSH terms: Nerve Tissue Proteins
  4. Fouad Fadhil Al-Qaim, Md Pauzi Abdullah, Jalifah Latip, Wan Mohd Afiq Wan Mohd Khalik, Nurfaizah Abu Tahrim, Nurul Auni Zainal Abidin, et al.
    Sains Malaysiana, 2016;45:803-810.
    The big challenge for the detection of pharmaceutical residues in water samples is the type of ionization mode in
    terms of positive or negative ionization which plays an important role to identify and quantify the analytes using liquid
    chromatography/mass spectrometry. An analytical method was applied to analysis of gliclazide (diabetic drug) in surface
    water and wastewater from sewage treatment plants and hospitals. The proposed analytical method allows simultaneous
    isolation and concentration procedure using solid phase extraction (Oasis HLB) prior to separation using high-performance
    liquid chromatography. The detection and confirmation was achieved by applying time-of-flight analyzer. The limits of
    quantification were as low as 1.4 ng/L (deionized water), 4 ng/L (surface water), 27 ng/L (hospital influent), 10 ng/L
    (hospital effluent), 6 ng/L (sewage treatment plant effluent) and 21 ng/L (sewage treatment plant influent), respectively. On
    average, good recoveries of higher than 87% were obtained for gliclazide in the studied samples. The proposed method
    successfully determined and quantified gliclazide in surface water and wastewater. The results showed that gliclazide
    is a persistent compound in sewage treatment effluents as well as in the recipient rivers. Gliclazide was detected in all
    samples and the highest concentration was 130 ng/L in influent of sewage treatment plant.
    Matched MeSH terms: Nerve Tissue Proteins
  5. Farah Ayuni Farinordin, Wan Seribani Wan Nilam, Shahril Mod Husin, Abdullah Samat, Shukor Md. Nor
    Sains Malaysiana, 2017;46:1429-1439.
    Scales are calcium carbonate and collagen-contained structures embedded within the fish epidermis and useful for
    species identification. This study aimed to describe morphological characteristics of scales and use the differences to
    prepare keys to species. Fishes were sampled from selected rivers of Tembat Forest Reserve, Hulu Terengganu. Specimens
    caught were from 3 families (Cyprinidae, Channidae, Nandidae) and 17 species. Each species was represented by ten
    individuals (size ranges 2.5 - 50 cm TL). The scales were removed, soaked in H2
    O2
    (0.5%), NH3 (0.3%), DH2
    O and
    mounted between a pair of glass slides for digital photographing. The morphological descriptions were based on types
    of scales, distinctiveness of radii arrangement at the anterior field, radii cover, radii distribution, overall shape, focus
    position and focus pattern. Keys to species were constructed based on these scale morphological characters described.
    Measurements of scale total length (L), total width (W), rostral field length (L1) and caudal field length (L2) of the scales
    were taken using Image J software. The inter-specific variation among scales was indicated by L1/L, L2/L, L1/L2 and
    W/L indices through multiple comparison tests (ANOVA). It was found that all 17 species showed significant differences
    with at least one other species in all four indices. Pristolepis grootii (Bleeker 1852) was the only one that significantly
    different (p<0.05) from other 16 species in the first three indices. Species that showed the least significant differences
    among species was Probarbus jullieni (Sauvage 1880). The differences among the scales were primarily due to the
    different types of scale that was either ctenoid or cycloid.
    Matched MeSH terms: Nerve Tissue Proteins
  6. Mohd-Sidik S, Akhtari-Zavare M, Periasamy U, Rampal L, Fadhilah SI, Mahmud R
    Patient Educ Couns, 2018 05;101(5):862-871.
    PMID: 29336859 DOI: 10.1016/j.pec.2018.01.004
    OBJECTIVES: The aim of this study was to implement and evaluate the outcomes of chemotherapy counselling based on the "Managing Patients on Chemotherapy" module on self-esteem and psychological affect (anxiety, depression) of cancer patients by pharmacists in ten selected government hospitals in Peninsular Malaysia.

    METHODS: A randomized control trial was conducted among 2120 cancer patients from April 2016 to January 2017 in ten selected government hospitals in Peninsular Malaysia. Cancer patients were randomly assigned to intervention and control groups. The intervention group received chemotherapy counselling by pharmacists based on the "Managing Patients on Chemotherapy" module. The outcomes were assessed at baseline, 1st, 2nd and 3rd follow-ups after counselling. In the course of data analysis; independent sample t-test, chi-square and two-way repeated measures ANOVA were conducted.

    RESULTS: Mean scores of self-esteem in the intervention group had significant difference in comparison with those of the control group in the 1st, 2nd and 3rd follow-ups after counselling (P 

    Matched MeSH terms: Nerve Tissue Proteins
  7. Yang C, Li X, Li S, Chai X, Guan L, Qiao L, et al.
    J Cell Mol Med, 2019 03;23(3):1813-1826.
    PMID: 30565384 DOI: 10.1111/jcmm.14080
    Organotypic slice culture is a living cell research technique which blends features of both in vivo and in vitro techniques. While organotypic brain slice culture techniques have been well established in rodents, there are few reports on the study of organotypic slice culture, especially of the central nervous system (CNS), in chicken embryos. We established a combined in ovo electroporation and organotypic slice culture method to study exogenous genes functions in the CNS during chicken embryo development. We performed in ovo electroporation in the spinal cord or optic tectum prior to slice culture. When embryonic development reached a specific stage, green fluorescent protein (GFP)-positive embryos were selected and fluorescent expression sites were cut under stereo fluorescence microscopy. Selected tissues were embedded in 4% agar. Tissues were sectioned on a vibratory microtome and 300 μm thick sections were mounted on a membrane of millicell cell culture insert. The insert was placed in a 30-mm culture dish and 1 ml of slice culture media was added. We show that during serum-free medium culture, the slice loses its original structure and propensity to be strictly regulated, which are the characteristics of the CNS. However, after adding serum, the histological structure of cultured-tissue slices was able to be well maintained and neuronal axons were significantly longer than that those of serum-free medium cultured-tissue slices. As the structure of a complete single neuron can be observed from a slice culture, this is a suitable way of studying single neuronal dynamics. As such, we present an effective method to study axon formation and migration of single neurons in vitro.
    Matched MeSH terms: Nerve Tissue Proteins/metabolism*
  8. Tsuchida N, Nakashima M, Miyauchi A, Yoshitomi S, Kimizu T, Ganesan V, et al.
    Clin Genet, 2018 02;93(2):266-274.
    PMID: 28556953 DOI: 10.1111/cge.13061
    The seizure threshold 2 (SZT2) gene encodes a large, highly conserved protein that is associated with epileptogenesis. In mice, Szt2 is abundantly expressed in the central nervous system. Recently, biallelic SZT2 mutations were found in 7 patients (from 5 families) presenting with epileptic encephalopathy with dysmorphic features and/or non-syndromic intellectual disabilities. In this study, we identified by whole-exome sequencing compound heterozygous SZT2 mutations in 3 patients with early-onset epileptic encephalopathies. Six novel SZT2 mutations were found, including 3 truncating, 1 splice site and 2 missense mutations. The splice-site mutation resulted in skipping of exon 20 and was associated with a premature stop codon. All individuals presented with seizures, severe developmental delay and intellectual disabilities with high variability. Brain MRIs revealed a characteristic thick and short corpus callosum or a persistent cavum septum pellucidum in each of the 2 cases. Interestingly, in the third case, born to consanguineous parents, had unexpected compound heterozygous missense mutations. She showed microcephaly despite the other case and previous ones presenting with macrocephaly, suggesting that SZT2 mutations might affect head size.
    Matched MeSH terms: Nerve Tissue Proteins/genetics*
  9. Mohamed ZI, Tee SF, Tang PY
    Psychiatr Genet, 2018 12;28(6):110-119.
    PMID: 30252773 DOI: 10.1097/YPG.0000000000000210
    INTRODUCTION: In recent years, various studies have accumulated evidence of the involvement of single nucleotide polymorphisms (SNPs) in introns and exons in schizophrenia. The association of functional SNPs in the 3'-untranslated regions with schizophrenia has been explored in a number of studies, but the results are inconclusive because of limited meta-analyses. To systematically analyze the association between SNPs in 3'-untranslated regions and schizophrenia, we conducted a meta-analysis by combining all available studies on schizophrenia candidate genes.

    MATERIALS AND METHODS: We searched candidate genes from the schizophrenia database and performed a comprehensive meta-analysis using all the available data up to August 2017. The association between susceptible SNPs and schizophrenia was assessed by the pooled odds ratio with 95% confidence interval using fixed-effect and random-effect models.

    RESULTS: A total of 21 studies including 8291 cases and 9638 controls were used for meta-analysis. Three investigated SNPs were rs165599, rs3737597, and rs1047631 of COMT, DISC1, and DTNBP1, respectively. Our results suggested that rs3737597 showed a significant association with schizophrenia in Europeans (odds ratio: 1.584, P: 0.002, 95% confidence interval: 1.176-2.134) under a random-effect framework.

    CONCLUSION: This meta-analysis indicated that rs3737597 of DISC1 was significantly associated with schizophrenia in Europeans, and it can be suggested as an ethnic-specific risk genetic factor.

    Matched MeSH terms: Nerve Tissue Proteins/genetics*
  10. Foo JN, Chew EGY, Chung SJ, Peng R, Blauwendraat C, Nalls MA, et al.
    JAMA Neurol, 2020 06 01;77(6):746-754.
    PMID: 32310270 DOI: 10.1001/jamaneurol.2020.0428
    Importance: Large-scale genome-wide association studies in the European population have identified 90 risk variants associated with Parkinson disease (PD); however, there are limited studies in the largest population worldwide (ie, Asian).

    Objectives: To identify novel genome-wide significant loci for PD in Asian individuals and to compare genetic risk between Asian and European cohorts.

    Design Setting, and Participants: Genome-wide association data generated from PD cases and controls in an Asian population (ie, Singapore/Malaysia, Hong Kong, Taiwan, mainland China, and South Korea) were collected from January 1, 2016, to December 31, 2018, as part of an ongoing study. Results were combined with inverse variance meta-analysis, and replication of top loci in European and Japanese samples was performed. Discovery samples of 31 575 individuals passing quality control of 35 994 recruited were used, with a greater than 90% participation rate. A replication cohort of 1 926 361 European-ancestry and 3509 Japanese samples was analyzed. Parkinson disease was diagnosed using UK Parkinson's Disease Society Brain Bank Criteria.

    Main Outcomes and Measures: Genotypes of common variants, association with disease status, and polygenic risk scores.

    Results: Of 31 575 samples identified, 6724 PD cases (mean [SD] age, 64.3 [10] years; age at onset, 58.8 [10.6] years; 3472 [53.2%] men) and 24 851 controls (age, 59.4 [11.4] years; 11 030 [45.0%] men) were analyzed in the discovery study. Eleven genome-wide significant loci were identified; 2 of these loci were novel (SV2C and WBSCR17) and 9 were previously found in Europeans. Replication in European-ancestry and Japanese samples showed robust association for SV2C (rs246814; odds ratio, 1.16; 95% CI, 1.11-1.21; P = 1.17 × 10-10 in meta-analysis of discovery and replication samples) but showed potential genetic heterogeneity at WBSCR17 (rs9638616; I2=67.1%; P = 3.40 × 10-3 for hetereogeneity). Polygenic risk score models including variants at these 11 loci were associated with a significant improvement in area under the curve over the model based on 78 European loci alone (63.1% vs 60.2%; P = 6.81 × 10-12).

    Conclusions and Relevance: This study identified 2 apparently novel gene loci and found 9 previously identified European loci to be associated with PD in this large, meta-genome-wide association study in a worldwide population of Asian individuals and reports similarities and differences in genetic risk factors between Asian and European individuals in the risk for PD. These findings may lead to improved stratification of Asian patients and controls based on polygenic risk scores. Our findings have potential academic and clinical importance for risk stratification and precision medicine in Asia.

    Matched MeSH terms: Nerve Tissue Proteins/genetics*
  11. Gupta T, Connors M, Tan JW, Manosroi W, Ahmed N, Ting PY, et al.
    Am J Hypertens, 2017 Dec 08;31(1):124-131.
    PMID: 28985281 DOI: 10.1093/ajh/hpx146
    BACKGROUND: Understanding the interactions between genetics, sodium (Na+) intake, and blood pressure (BP) will help overcome the lack of individual specificity in our current treatment of hypertension. This study had 3 goals: expand on the relationship between striatin gene (STRN) status and salt-sensitivity of BP (SSBP); evaluate the status of Na+ and volume regulating systems by striatin risk allele status; evaluate potential SSBP mechanisms.

    METHODS: We assessed the relationship between STRN status in humans (HyperPATH cohort) and SSBP and on volume regulated systems in humans and a striatin knockout mouse (STRN+/-).

    RESULTS: The previously identified association between a striatin risk allele and systolic SSBP was demonstrated in a new cohort (P = 0.01). The STRN-SSBP association was significant for the combined cohort (P = 0.003; β = +5.35 mm Hg systolic BP/risk allele) and in the following subgroups: normotensives, hypertensives, men, and older subjects. Additionally, we observed a lower epinephrine level in risk allele carriers (P = 0.014) and decreased adrenal medulla phenylethanolamine N-methyltransferase (PNMT) in STRN+/- mice. No significant associations were observed with other volume regulated systems.

    CONCLUSIONS: These results support the association between a variant of striatin and SSBP and extend the findings to normotensive individuals and other subsets. In contrast to most salt-sensitive hypertensives, striatin-associated SSBP is associated with normal plasma renin activity and reduced epinephrine levels. These data provide clues to the underlying cause and a potential pathway to achieve, specific, personalized treatment, and prevention.

    Matched MeSH terms: Nerve Tissue Proteins/genetics*
  12. Vincent-Chong VK, Ismail SM, Rahman ZA, Sharifah NA, Anwar A, Pradeep PJ, et al.
    Oral Dis, 2012 Jul;18(5):469-76.
    PMID: 22251088 DOI: 10.1111/j.1601-0825.2011.01894.x
    Multistep pathways and mechanisms are involved in the development of oral cancer. Chromosomal alterations are one of such key mechanisms implicated oral carcinogenesis. Therefore, this study aims to determine the genomic copy number alterations (CNAs) in oral squamous cell carcinoma (OSCC) using array comparative genomic hybridization (aCGH) and in addition attempt to correlate CNAs with modified gene expression.
    Matched MeSH terms: Nerve Tissue Proteins/biosynthesis; Nerve Tissue Proteins/genetics*
  13. Ishak MF, Chua KH, Asma A, Saim L, Aminuddin BS, Ruszymah BH, et al.
    Int J Pediatr Otorhinolaryngol, 2011 Jun;75(6):835-40.
    PMID: 21543123 DOI: 10.1016/j.ijporl.2011.03.021
    This study was aimed to see the difference between chondrocytes from normal cartilage compared to chondrocytes from microtic cartilage. Specific attentions were to characterize the growth of chondrocytes in terms of cell morphology, growth profile and RT-PCR analysis.
    Matched MeSH terms: Nerve Tissue Proteins/genetics; Nerve Tissue Proteins/metabolism
  14. Ismail CAN, Suppian R, Ab Aziz CB, Long I
    J Mol Neurosci, 2021 Feb;71(2):379-393.
    PMID: 32671697 DOI: 10.1007/s12031-020-01661-1
    The pharmacological inhibition of glial activation is one of the new approaches for combating neuropathic pain in which the role of glia in the modulation of neuropathic pain has attracted significant interest and attention. Neuron-glial crosstalk is achieved with N-methyl-D-aspartate-2B receptor (NMDAR-2B) activation. This study aims to determine the effect of ifenprodil, a potent noncompetitive NMDAR-2B antagonist, on activated microglia, brain-derived neurotrophic factors (BDNF) and downstream regulatory element antagonist modulator (DREAM) protein expression in the spinal cord of streptozotocin-induced painful diabetic neuropathy (PDN) rats following formalin injection. In this experimentation, 48 Sprague-Dawley male rats were randomly selected and divided into four groups: (n = 12): control, PDN, and ifenprodil-treated PDN rats at 0.5 μg or 1.0 μg for 7 days. Type I diabetes mellitus was then induced by injecting streptozotocin (60 mg/kg, i.p.) into the rats which were then over a 2-week period allowed to progress into the early phase of PDN. Ifenprodil was administered in PDN rats while saline was administered intrathecally in the control group. A formalin test was conducted during the fourth week to induce inflammatory nerve injury, in which the rats were sacrificed at 72 h post-formalin injection. The lumbar enlargement region (L4-L5) of the spinal cord was dissected for immunohistochemistry and western blot analyses. The results demonstrated a significant increase in formalin-induced flinching and licking behavior with an increased spinal expression of activated microglia, BDNF and DREAM proteins. It was also shown that the ifenprodil-treated rats following both doses reduced the extent of their flinching and duration of licking in PDN in a dose-dependent manner. As such, ifenprodil successfully demonstrated inhibition against microglia activation and suppressed the expression of BDNF and DREAM proteins in the spinal cord of PDN rats. In conclusion, ifenprodil may alleviate PDN by suppressing spinal microglia activation, BDNF and DREAM proteins.
    Matched MeSH terms: Nerve Tissue Proteins/biosynthesis*; Nerve Tissue Proteins/genetics
  15. Garza-Manero S, Sindi AAA, Mohan G, Rehbini O, Jeantet VHM, Bailo M, et al.
    Epigenetics Chromatin, 2019 12 12;12(1):73.
    PMID: 31831052 DOI: 10.1186/s13072-019-0320-7
    BACKGROUND: Members of the HMGN protein family modulate chromatin structure and influence epigenetic modifications. HMGN1 and HMGN2 are highly expressed during early development and in the neural stem/progenitor cells of the developing and adult brain. Here, we investigate whether HMGN proteins contribute to the chromatin plasticity and epigenetic regulation that is essential for maintaining pluripotency in stem cells.

    RESULTS: We show that loss of Hmgn1 or Hmgn2 in pluripotent embryonal carcinoma cells leads to increased levels of spontaneous neuronal differentiation. This is accompanied by the loss of pluripotency markers Nanog and Ssea1, and increased expression of the pro-neural transcription factors Neurog1 and Ascl1. Neural stem cells derived from these Hmgn-knockout lines also show increased spontaneous neuronal differentiation and Neurog1 expression. The loss of HMGN2 leads to a global reduction in H3K9 acetylation, and disrupts the profile of H3K4me3, H3K9ac, H3K27ac and H3K122ac at the Nanog and Oct4 loci. At endodermal/mesodermal genes, Hmgn2-knockout cells show a switch from a bivalent to a repressive chromatin configuration. However, at neuronal lineage genes whose expression is increased, no epigenetic changes are observed and their bivalent states are retained following the loss of HMGN2.

    CONCLUSIONS: We conclude that HMGN1 and HMGN2 maintain the identity of pluripotent embryonal carcinoma cells by optimising the pluripotency transcription factor network and protecting the cells from precocious differentiation. Our evidence suggests that HMGN2 regulates active and bivalent genes by promoting an epigenetic landscape of active histone modifications at promoters and enhancers.

    Matched MeSH terms: Nerve Tissue Proteins/metabolism; Nerve Tissue Proteins/chemistry
  16. Siar CH, Nagatsuka H, Han PP, Buery RR, Tsujigiwa H, Nakano K, et al.
    J Oral Pathol Med, 2012 Apr;41(4):332-9.
    PMID: 22077561 DOI: 10.1111/j.1600-0714.2011.01104.x
    Canonical and non-canonical Wnt signaling pathways modulate diverse cellular processes during embryogenesis and post-natally. Their deregulations have been implicated in cancer development and progression. Wnt signaling is essential for odontogenesis. The ameloblastoma is an odontogenic epithelial neoplasm of enamel organ origin. Altered expressions of Wnts-1, -2, -5a, and -10a are detected in this tumor. The activity of other Wnt members remains unclarified.
    Matched MeSH terms: Nerve Tissue Proteins/genetics
  17. Watihayati MS, M S W, Zabidi AM, A M H ZH, Tang TH, T H T, et al.
    Kobe J Med Sci, 2007;53(4):171-5.
    PMID: 17932457
    Spinal Muscular Atrophy (SMA) is an autosomal recessive disease, which is characterized by degeneration of the anterior horn cells of the spinal cord. SMA is classified into 3 clinical subtypes, type I (severe), type II (intermediate), and type III (mild). Two genes, SMN1 and NAIP, have been identified as SMA-related genes. The SMN1 gene is now recognized as a responsible gene for the disease because it is deleted or mutated in most SMA patients. However, the role of the NAIP gene in SMA has not been fully clarified. To clarify the contribution of NAIP to the disease severity of SMA, we studied the relationship between NAIP-deletion and clinical phenotype in Malaysian patients. A total of 39 patients lacking SMN1 (12 type I, 19 type II, and 8 type III patients) were enrolled into this study. Seven out of 12 patients with type I SMA (approximately 60%) showed NAIP deletion. On the contrary, only 2 out of 20 type II patients and none of type III patients showed NAIP deletion. There was a statistically significant difference in NAIP-deletion frequency among the clinical subtypes (Fisher's exact probability test, p value = 0.014). In conclusion, according to our data that NAIP deletion was more frequent in type I SMA than in type II-III SMA, the NAIP gene may be a modifying factor for disease severity of SMA.
    Matched MeSH terms: Nerve Tissue Proteins/genetics
  18. Watihayati MS, Zabidi-Hussin AM, Tang TH, Matsuo M, Nishio H, Zilfalil BA
    Pediatr Int, 2007 Feb;49(1):11-4.
    PMID: 17250498
    The survival motor neuron 1 (SMN1) gene has been recognized to be responsible for spinal muscular atrophy (SMA) because it is homozygously deleted in more than 90% of SMA patients, irrespective of their clinical severity, whereas the neuronal apoptosis inhibitory protein (NAIP) gene is now considered to be a modifying factor of the severity of SMA. In Malaysia, it remains to be elucidated whether deletion of the SMN1 gene is also a main cause of SMA or whether deletion of the NAIP gene is found in the SMA patients.
    Matched MeSH terms: Nerve Tissue Proteins/genetics*
  19. Kim Y, Griffin JM, Nor MNM, Zhang J, Freestone PS, Danesh-Meyer HV, et al.
    Neurotherapeutics, 2017 Oct;14(4):1148-1165.
    PMID: 28560708 DOI: 10.1007/s13311-017-0536-9
    The cis benzopyran compound tonabersat (SB-220453) has previously been reported to inhibit connexin26 expression in the brain by attenuating the p38-mitogen-activated protein kinase pathway. We show here that tonabersat directly inhibits connexin43 hemichannel opening. Connexin43 hemichannels have been called "pathological pores" based upon their role in secondary lesion spread, edema, inflammation, and neuronal loss following central nervous system injuries, as well as in chronic inflammatory disease. Both connexin43 hemichannels and pannexin channels released adenosine triphosphate (ATP) during ischemia in an in vitro ischemia model, but only connexin43 hemichannels contributed to ATP release during reperfusion. Tonabersat inhibited connexin43 hemichannel-mediated ATP release during both ischemia and reperfusion phases, with direct channel block confirmed using electrophysiology. Tonabersat also reduced connexin43 gap junction coupling in vitro, but only at higher concentrations, with junctional plaques internalized and degraded via the lysosomal pathway. Systemic delivery of tonabersat in a rat bright-light retinal damage model (a model for dry age-related macular degeneration) resulted in significantly improved functional outcomes assessed using electroretinography. Tonabersat also prevented thinning of the retina, especially the outer nuclear layer and choroid, assessed using optical coherence tomography. We conclude that tonabersat, already given orally to over 1000 humans in clinical trials (as a potential treatment for, and prophylactic treatment of, migraine because it was thought to inhibit cortical spreading depression), is a connexin hemichannel inhibitor and may have the potential to be a novel treatment of central nervous system injury and chronic neuroinflammatory disease.
    Matched MeSH terms: Nerve Tissue Proteins/metabolism
  20. Milne RL, Burwinkel B, Michailidou K, Arias-Perez JI, Zamora MP, Menéndez-Rodríguez P, et al.
    Hum Mol Genet, 2014 Nov 15;23(22):6096-111.
    PMID: 24943594 DOI: 10.1093/hmg/ddu311
    Candidate variant association studies have been largely unsuccessful in identifying common breast cancer susceptibility variants, although most studies have been underpowered to detect associations of a realistic magnitude. We assessed 41 common non-synonymous single-nucleotide polymorphisms (nsSNPs) for which evidence of association with breast cancer risk had been previously reported. Case-control data were combined from 38 studies of white European women (46 450 cases and 42 600 controls) and analyzed using unconditional logistic regression. Strong evidence of association was observed for three nsSNPs: ATXN7-K264R at 3p21 [rs1053338, per allele OR = 1.07, 95% confidence interval (CI) = 1.04-1.10, P = 2.9 × 10(-6)], AKAP9-M463I at 7q21 (rs6964587, OR = 1.05, 95% CI = 1.03-1.07, P = 1.7 × 10(-6)) and NEK10-L513S at 3p24 (rs10510592, OR = 1.10, 95% CI = 1.07-1.12, P = 5.1 × 10(-17)). The first two associations reached genome-wide statistical significance in a combined analysis of available data, including independent data from nine genome-wide association studies (GWASs): for ATXN7-K264R, OR = 1.07 (95% CI = 1.05-1.10, P = 1.0 × 10(-8)); for AKAP9-M463I, OR = 1.05 (95% CI = 1.04-1.07, P = 2.0 × 10(-10)). Further analysis of other common variants in these two regions suggested that intronic SNPs nearby are more strongly associated with disease risk. We have thus identified a novel susceptibility locus at 3p21, and confirmed previous suggestive evidence that rs6964587 at 7q21 is associated with risk. The third locus, rs10510592, is located in an established breast cancer susceptibility region; the association was substantially attenuated after adjustment for the known GWAS hit. Thus, each of the associated nsSNPs is likely to be a marker for another, non-coding, variant causally related to breast cancer risk. Further fine-mapping and functional studies are required to identify the underlying risk-modifying variants and the genes through which they act.
    Matched MeSH terms: Nerve Tissue Proteins/genetics
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