Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2019 ( 49 )

2018 ( 69 )

2017 ( 50 )

2016 ( 69 )

Custom range...

Search Results: 1 - 10 of 19315 matches for " U Musa "
All listed articles are free for downloading (OA Articles)
Page 1 /19315
Display every page Item
Neuroprotective Effects of Caffeine on a Maternally Separated Parkinsonian Rat Model  [PDF]
Thabisile Mpofana, Willie M. U. Daniels, Musa V. Mabandla
Journal of Behavioral and Brain Science (JBBS) , 2014, DOI: 10.4236/jbbs.2014.42011

Early-life stress has been shown to disrupt the programming of the hypothalamic-pituitary-adrenal (HPA) axis which may have severe consequences in the development of neurological disorders later on in life. Prolonged early-life stressful events produce an exaggerated stress hormone response in the adult offspring. Chronic stress and elevated corticosterone levels have been found to exaggerate functional deficits and accelerate loss of dopamine producing neurons in a rat model of Parkinson’s disease. We investigated the neuroprotective effects of caffeine on 6-OHDA lesioned rats that were exposed to maternal separation stress. We examined behaviour of animals before and after the infusion of 6-OHDA using the step and cylinder tests. We also measured dopamine concentration in the striatum, mitochondrial membrane potential in the striatum and the total antioxidant capacity in blood plasma. Maternally separated rats displayed an impaired ability to initiate movement in the step test and a decreased percentage impaired limb use in the cylinder test. In the rats that received caffeine these motor deficits were ameliorated. Maternal separation exaggerated the lesion caused by 6-OHDA injection. However, the neuroprotective effects of caffeine were evident in both the stressed and non-stressed rats as shown by the higher dopamine concentration and total antioxidant capacity on caffeine treated rats. Maternally separated rats had higher mitochondrial membrane permeability when compared to the caffeine treated rats. We therefore conclude that caffeine ameliorated the neurodegeneration associated with 6-OHDA injection in maternally separated animals.

Determination of Selected Heavy Metals in the Organs of Some Animals Reared in the Gold-Mining Areas of Zamfara State, Nigeria  [PDF]
U. A. Birnin-Yauri, M. K. Musa, S. M. Alhaji
Journal of Agricultural Chemistry and Environment (JACEN) , 2018, DOI: 10.4236/jacen.2018.74016
Abstract: The study was conducted to determine the concentrations of heavy metals (Cu, Zn, Co, Mn, Fe, Cr, Cd and Pb) in the liver, kidney and flesh of Cattle, Sheep and Goats from Anka and Bukkuyum Local Government areas of Zamfara State Nigeria. The levels of heavy metals in the liver, kidney and flesh of beef, mutton and caprine ranged from 56 to 549 μg·g-1 for Zn; 109 to 576 μg·g-1 for Fe; 0.0 to 4.0 μg·g-1 for Pb; 2.52 to 13.25 μg·g-1 for Mn; 0.00 to 19.64 μg·g-1 for Cr; 0.00 to 0.25 μg·g-1 for Cd; 0.00 to 2.71 μg·g-1 for Co and 3.59 to 538 μg·g-1 for Cu. The concentration of Cr, Pb and Mn in the kidneys and livers of the samples were observed to be higher than
Advanced Papillary Carcinoma of the Breast Presenting as an Ulcerated Anterior Chest Wall Tumour: Case Report  [PDF]
U. Abubakar, J. N. Legbo, S. M. Sahabi, C. Opara, I. R. Jamalu, N. Musa, S. Aliyu
Advances in Breast Cancer Research (ABCR) , 2014, DOI: 10.4236/abcr.2014.31001

BACKGROUND: Papillary carcinoma of the breast is a rare malignant tumour accounting for 1% - 2% of all breast cancers in women. Papillary carcinomas of the chest wall are always secondary to thyroid, thymus and ovaries. Other variants of breast cancer metastasizing to the chest wall have been reported. CASE: We report a 67-year-old woman presented to us with an ulcerated anterior chest wall mass of 1-year duration, bilateral axillary, supraclavicular and cervical swellings of 8-month duration. There was a history of breast lump which was noticed 5 years prior to presentation, no history of breast malignancy in the past and no family history of breast cancer. Examination revealed an ulcerated, nodular mass over the sternal angle which measured 14 cm × 12 cm

Influence of phosphorus on the performance of cowpea (Vigna unguiculata (L) Walp.) varieties in the Sudan savanna of Nigeria  [PDF]
A. Singh, A. L. Baoule, H. G Ahmed, A. U. Dikko, U. Aliyu, M. B. Sokoto, J. Alhassan, M. Musa, B. Haliru
Agricultural Sciences (AS) , 2011, DOI: 10.4236/as.2011.23042
Abstract: Savanna regions of Nigeria are deficient in nitrogen and phosphorus, which retard the growth and yield of crops. Therefore, a study was conducted in the wet season of 2006 at the Dry Land Teaching and Research Farm of Usmanu Danfodiyo University, Sokoto to evaluate the effect of phosphorus on the growth and yield of two cowpea varieties sourced from Republic of Niger. Treatment consisted of four (4) rates of phosphorus (0, 20, 40, 60 kg.ha–1) factorialy combined with (2) varieties of cowpea (kvx303096G and TN5-78) and laid out in a randomized complete block design (RCBD) replicated three (3) times. Results showed significant response to applied P on pods per plant, grain and stover yield and 100-seed weight with highest response to the application of 60 kg.P.ha–1. From this study it can be concluded that KVX303096G and TN5-78 could both be sown under Sokoto condition to obtain reasonable yield of about 1 t.ha–1 of grain and 1.6 t.ha–1 of stover. Irrespective of the varieties, application of 60 kg P2O5 ha–1 could be recommended for higher yield of cowpea (1.4 t.ha–1) relative to 0 kg.P.ha–1 that yielded 1.0 t.ha–1.
Structural Characterization of Lithium Doped Nzp Na1-xLixZr(PO4)3(x=0.00-0.75)
U Ahmadu, AO Musa, N Rabiu, N Nuntanwong
Bayero Journal of Pure and Applied Sciences , 2011,
Abstract: Sodium zirconium phosphate (NZP) of composition Na1-xLixZr2(PO4)3 (x=0.0-0.75) have been synthesized using solid state reaction, with a view to minimizing the ZrO2 second phase normally present .The compositions have been characterized by XRD and SEM for phase composition, lattice parameters and density. No ZrO2 second phase was detected in some of the compositions, rather NasZr(PO4)3 and the density showed a systematic decrease with increase of Li. All The compositions belong to the rhombohedral crystal system and were indexed based on hexagonal lattice structure. The density of the composition x=0.00 as calculated from the XRD data is 3.02g/cm3.The grain sizes of the compositions are in the range 1-2μm, 2-5μm, 3-7 μm and 2μm for x=0,0.25,0.5 and 0.75, respectively.
Vaccination with newcastle disease vaccines strain i2 and lasota in commercial and local chickens in Plateau State Nigeria
U Musa, PA Abdu, UM Mera, PE Emmenna, MS Ahmed
Nigerian Veterinary Journal , 2010,
Abstract: Vaccination trials and comparative immunogenicity study using Newcastle disease vaccine strain I2 (NDVI2) and NDV La Sota administered to commercial and local chickens through intraocular (i/o), intramuscular (i/m), drinking water (dw), untreated sorghum, parboiled sorghum, sorghum coated with gum Arabic or commercial chick mash feed as vaccine carriers was conducted. Newcastle disease vaccine strain I2 and NDV La Sota vaccines provided protection to commercial and local chickens vaccinated through i/o, i/m or dw. No significant difference (P.0.05) was observed in the antibody titre of commercial or local chickens vaccinated with either NDVI2 or NDV La Sota vaccines administered via commercial feed, parboiled sorghum, parboiled sorghum coated with gum Arabic and untreated sorghum. NDVI2 or NDV La Sota vaccines administered through commercial feed, parboiled sorghum, parboiled sorghum coated with gum Arabic and untreated sorghum gave no or limited protection (0-22%) to the birds when challenged with a local strain of velogenic viscerotropic Newcastle disease virus Kudu 113 strain. It was concluded that the vaccine carriers used in this study were not suitable for delivery of NDVI2 or NDVS La Sota vaccines to local or commercial chickens.
Performance Analysis of Collision Avoidance MAC Protocol in Multi-hop Wireless Ad-hoc Network
I. Mustapha,J. D. Jiya,B. U. Musa,J. Usman
International Journal of Network and Mobile Technologies , 2011,
Abstract: Performance analysis of 802.11Medium Access Control (MAC) protocol has been carried out either by means of simulation or by means of analytical models with simplified back-off rule assumptions. BinaryExponential Back-off (BEB) is the widely used back-off mechanism in many contention-based IEEE 802.11 MAC protocols for its simplicity and good performance, but it has drawbacks especially in multi-hop ad hocnetwork and some new back-off schemes such as Multiplicative Increase and Linear Decrease (MILD) and Double Increment Double Decrement (DIDD) were proposed. This paper, investigate the performance ofcollision avoidance MAC protocol in multi-hop wireless ad-hoc network by adopting MILD back-off mechanism. A three state Markov chain is used to model the channel states and node states. These models were used to derive the duration time, steady-state probabilities of the states of node and throughput of Mobile Ad-hoc NETwork (MANET). Simulation results show no matter the value of average number of neighbors,transmission range , and length of DATA frames , the throughput of MANET always achieves the maximum value at some point of persistent probability and also the throughput of a MANETs increases with increase in persistent probability which is influenced by the number of neighbors, transmission range and length of DATA frame. On the other hand the throughput decreases with increase in sensing range which is also influenced by the number of neighbors, transmission range and length of DATA frame.
Seroprevalence, Seasonal Occurrence and Clinical Manifestation of Newcastle Disease in Rural Household Chickens in Plateau State, Nigeria
U. Musa,P.A. Abdu,I.I. Dafwang,J.U. Umoh
International Journal of Poultry Science , 2009,
Abstract: A study on seroprevalence, seasonal occurrence and clinical manifestation of Newcastle Disease Virus (ND) among rural household chickens and Live Birds Markets (LBM) was conducted using haemagglutination Inhibition Test (HI) and questionnaires. A total of 1, 208 chickens reared under extensive management system in four Local Government Areas (LGAs) of Plateau State were used for the study. The seroprevalence of ND virus antibodies in rural chickens showed that there was no statistically significant (p > 0.05) difference among the four LGAs and of the 1,208 sera tested, 51.9% had detectable antibodies to NDV but only 14.1% of the chickens had HI antibody titre of > 4log2 which was considered as protective. About 86.2% of the chickens sampled were at risk of suffering from clinical ND. Newcastle disease outbreaks occurred year round in the villages sampled with the highest incidence of 86.6% observed from November to March (Dry season) and September to October, 8.31% (Pre-dry season). During outbreaks of ND, infected birds exhibit the following major clinical signs; nervous signs (32.4%), weakness (16.6%), whitish/greenish diarrhea (16.2%), coughing/sneezing 13.6%, anorexia 9.39% and others 11.8%. It was concluded that the prevalence of ND in the four LGAs of Plateau State is high. At the time of the study over 80% of rural chickens in Plateau State were at risk of dying from ND when exposed to a virulent NDV. It is therefore recommended that vaccination and improved management practices as a means of prevention against ND before the period of outbreaks should be instituted.
Rural Poultry Populations and Strains in Two Agro-Ecological Zones of Nigeria
I.I. Dafwang,U. Musa,P.A. Abdu,J.U. Umoh
International Journal of Poultry Science , 2010,
Abstract: A study was conducted in Plateau State of Nigeria which has two distinct agro-ecological zones; a humid sub-temperate region in the North and a sub-humid hotter region that is part of the Northern Guinea Savanna ecological zone of Nigeria in the South. A sample of 1240 farmers from two Local Governments in each of the two ecological zones were surveyed to assess the poultry population and strains of birds as a prelude to the introduction of interventions for control of Newcastle Disease and other programs for improving rural poultry productivity. Results showed that the farmers owned an average of 20 chickens, 6 ducks, 0.3 turkeys, 1 pigeon and 1.2 guinea fowls per household. Each household reared two or more strains of chicken and most had different types of poultry in the same backyard. There were more Naked neck and long legged chickens in the hotter ecological zone but more Barred plumage strains in the cooler ecological zone.
A Case Control Study of Subjective Quality of Life in Outpatients with Depression  [PDF]
Francis John Davou, Moses David Audu, Akinwande O. Akinhanmi, Musa Usman Umar, Tungchama Friday Philip, Maigari Yusufu Taru, Aishatu Armiya’u Yushau
Open Journal of Psychiatry (OJPsych) , 2017, DOI: 10.4236/ojpsych.2017.74022
Abstract: Background: Depression is one of the leading causes of disability including impairment in the subjective Quality of Life (QOL) of the patient. Unfortunately, only a fraction receives the correct diagnosis and treatment in general practice. This study aims to determine the subjective Quality of Life of depressed patients. Method: A representative sample of adults, 18 years and above (100 each for cases and controls), were assessed for QOL using the World Health Organization Quality of Life instrument (WHOQOL-BREF). Respondents were also evaluated for socio-demographic factors. Major depressive disorder was assessed using the Mini International Neuropsychiatric Interview. Severity of depression was measured using Hamilton’s Rating Scale for Depression and global functioning was assessed with the Global Assessment of Functioning scale. Results: Majority of the participants were females (62.0%) and young with a mean age of 39.11 ± 12.40 years. Overall subjective QOL (P < 0.033), as well as the physical (P < 0.002), psychological (P < 0.001), social (P < 0.006) and environmental (P < 0.048) domains were significantly impaired in depressed patients compared to healthy control. Global functioning was also impaired (P < 0.001) in depressed patients compared to healthy control. Conclusion: The finding of the study showed that depression is a serious illness that affects the patient’s perception of the quality of his/her life. It is therefore very necessary to innovate better treatment modalities to reduce its burden.
Page 1 /19315
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.