A Roadmap from Functional Materials to Plant Health Monitoring (PHM).

Soft bioelectronics have great potential for the early diagnosis of plant diseases and the mitigation of adverse outcomes such as reduced crop yields and stunted growth. Over the past decade, bioelectronic interfaces have evolved into miniaturized conformal electronic devices that integrate flexible monitoring systems with advanced electronic functionality. This development is largely attributable to advances in materials science, and micro/nanofabrication technology. The approach uses the mechanical and electronic properties of functional materials (polymer substrates and sensing elements) to create interfaces for plant monitoring. In addition to ensuring biocompatibility, several other factors need to be considered when developing these interfaces. These include the choice of materials, fabrication techniques, precision, electrical performance, and mechanical stability. In this review, some of the benefits plants can derive from several of the materials used to develop soft bioelectronic interfaces are discussed. The article describes how they can be used to create biocompatible monitoring devices that can enhance plant growth and health. Evaluation of these devices also takes into account features that ensure their long-term durability, sensitivity, and reliability. This article concludes with a discussion of the development of reliable soft bioelectronic systems for plants, which has the potential to advance the field of bioelectronics.

Assessment of biochemical liver function tests in relation to age among steady state sickle cell anemia patients.

BACKGROUND AND OBJECTIVE: Multiorgan failure including liver dysfunction is a common finding in sickle cell anemia (SCA) patients, the cause of which is multifactorial with advancing age said to be a major determinant. There is a paucity of data on liver function among SCA patients in relation to age in northern Nigerian hospitals, including Ahmadu Bello University Teaching Hospital (ABUTH), Zaria. This study was to assess the biochemical liver function tests (LFTs) as they relate to age among SCA patients in steady state, with a view to improving the overall monitoring of these patients. SUBJECTS AND METHODS: This study was carried out in ABUTH, Zaria, Northern Nigeria. LFTs were carried out in 100 SCA and 100 apparently healthy participants (controls). The SCA group was made up of fifty adults and fifty children diagnosed of SCA, whereas the control group was made up of fifty adults and fifty children who were apparently healthy and had hemoglobin AA. Paired two-tailed Student's t-test for matched samples and Pearson's linear correlation statistical methods were employed for the data analysis using Microsoft Office Excel 2007. A P ≤ 0.05 was considered as statistically significant. RESULTS: The serum concentrations of total bilirubin (TB), alanine transaminase (ALT), aspartate transaminase (AST), alkaline phosphatase (ALP), and AST/ALT ratio were significantly higher in SCA patients compared to the controls (P = 0.001, P = 0.001, P = 0.05, P = 0.05 and P = 0.001, respectively). Serum total protein (TP) and ALB were significantly lower (P = 0.01 and P < 0.05, respectively) in SCA patients compared with the controls. The levels of TB, ALT, AST, ALP, and AST/ALT were significantly lower in SCA adults compared to SCA children, whereas TP and ALB were higher in SCA adults compared to the SCA children. There were significant negative correlations between age and each of TB, ALT, AST, ALP, and AST/ALT, and significant positive correlations between age and each of TP and ALB in SCA patients. CONCLUSION: There are mild LFTs derangements in SCA patients even in steady state with the extent of the abnormalities decreasing with advancing age of the patients.

Time interval to initiation of contraceptive methods following childbirth in a low-resource setting.

OBJECTIVES: The objectives of the study were to determine factors affecting the interval between a woman's last childbirth and the initiation of contraception. MATERIALS AND METHODS: This was a retrospective study. Family planning clinic records of the Barau Dikko Teaching Hospital Kaduna from January 2000 to March 2014 were retrieved. Information was collected on demographics, reproductive, and contraceptive history. Data were analyzed using the SPSS version 15 software, and missing responses were excluded. Chi-square was used as a test of association with significance level established at P = 0.05. RESULTS: A total of 5992 client's cards were retrieved. All were female and married. Majority were aged 25-34 years (53.1%), had completed secondary education (56%) and were Muslims (52.3%). Only 4979 cards (83.1%) had correct data on intervals and 22.1% of these clients initiated contraception within 6 months of their last childbirth. Education, religion, source of information, number of living children, desire to have more children, previous use of contraception, and type of contraception chosen were significantly associated with intervals for initiating contraception after last childbirth (P < 0.05) while the presence of complications in the last delivery was not (P > 0.05). CONCLUSIONS: Majority of women initiate contraception late after childbirth in this setting. Increased awareness on immediate/early postpartum contraception is required. Further qualitative studies will help to explore findings of this study.

Burden of acute respiratory disease of epidemic and pandemic potential in the WHO Eastern Mediterranean Region: A literature review.

There are gaps in the knowledge about the burden of severe respiratory disease in the Eastern Mediterranean Region (EMR). This literature review was therefore conducted to describe the burden of epidemicand pandemic-prone acute respiratory infections (ARI) in the Region which may help in the development of evidence-based disease prevention and control policies. Relevant published and unpublished reports were identified from searches of various databases; 83 documents fulfilled the search criteria. The infections identified included: ARI, avian influenza A(H5N1), influenza A(H1N1)pdm09 and Middle East respiratory syndrome coronavirus (MERS-CoV) infection. Pneumonia and ARIs were leading causes of disease and death in the Region. Influenza A(H1N1) was an important cause of morbidity during the 2009 pandemic. This review provides a descriptive summary of the burden of acute respiratory diseases in the Region, but there still remains a lack of necessary data.

Epidemiology and management of head injury in paediatric age group in North-Eastern Nigeria.

BACKGROUND: Paediatric head injury (HI) is the single most common cause of death and permanent disability in children world over, and this is increasingly becoming worrisome in our society because of increased risks and proneness to road traffic accidents on our highways and streets. The study set to determine causes and management of HI among children in our society. PATIENTS AND METHODS: A retrospective review of all children aged 0-15 years with traumatic head injury (THIs) who were managed at the University of Maiduguri Teaching Hospital between July, 2006 and August, 2008. RESULTS: A total of 45 children with THIs presented to the casualty unit of the hospital; 30 (66.7%) were boys and 15 (33.3%) were girls. Three (6.7%) children were less than 1 year of age, 21 (46.7%) were between 1 years and 6 years while 16 (35.6%) and 5 (11.0%) were aged 7-11 years and 12-15 years respectively. Thirty six (80.0%) of the children were pedestrians, 6 (13.4%) fell from a height, while 2 (4.4%) and 1 (2.2% were as a result of home accident and assault, respectively. Twenty one patients (46.7%) had mild HI, while 53.3% had moderate to severe category. Forty one (91.1%) of children were managed as in-patients, mostly (95.1%) by conservative non-operative management, while 4 (8.9%) were treated on the out-patient basis. The mortality rate was 17.8%. CONCLUSION: H1 among children is of a great concern, because of its incremental magnitude, due to increasing child labour and interstate religious discipleship among children, with attendant high mortality and permanent disabilities. Necessary laws and legislations should be formulated and implemented with organized campaigns and public enlightenment to prevent and mitigate this menace.

Developmental monitoring using caregiver reports in a resource-limited setting: the case of Kilifi, Kenya.

AIM: The main aim of the current study was to evaluate the reliability, validity and acceptability of developmental monitoring using caregiver reports among mothers in a rural African setting. METHODS: A structured interview for parents of children aged 24 months and less was developed through both participant consultation and a review of literature. The reliability and validity of the schedule was evaluated through a 10-month monitoring programme of 95 children, aged 2-10 months. The acceptability of the process was evaluated by studying retention rates and by organizing focus group discussions with participating mothers. RESULTS: The structured interview 'Developmental Milestones Checklist' consisted of 66 items covering three broad domains of child functioning: motor, language and personal-social development. The interview yielded scores of developmental achievements that showed high internal consistency and excellent test-retest reliability. The results were sensitive to maturational changes and nutritional deficiencies. In addition, acceptable retention rates of approximately 80% were found. Participating mothers reported that they found the procedures both acceptable and beneficial. CONCLUSION: Developmental monitoring using caregiver report is a viable method to identify and monitor at-risk children in Sub-Saharan Africa.

Is routine antenatal screening for syphilis in Nigeria still justified clinically and economically?

OBJECTIVE: To determine the seroprevalence and cost effectiveness of antenatal syphilis screening at the University of Maiduguri Teaching Hospital (UMTH), Maiduguri, Nigeria. METHODS: A retrospective chart analysis of venereal disease research laboratory (VDRL) results among pregnant women at the UMTH, Maiduguri, Nigeria, during a 10-year period (from 1st January 1999 to 31st December 2008) was undertaken. RESULTS: A total of 18,712 women registered for antenatal care during the study period. Of these, 18,101 had serological screening for syphilis. Only 12 of the 18,101 screened were seropositive by VDRL, 9 (75%) were confirmed by Treponema pallidum hemagglutination assay (TPHA), giving a seroprevalence rate of 0.05%. Three (25%) were biological false-positive. The peak age-specific incidence of 0.02% was in the 20-24 year-age group. There was zero prevalence in the age groups 15-19 and >40 years. There was no case of congenital syphilis seen. The cost for VDRL testing per patient in UMTH is US$2. The total amount of money spent on VDRL tests over the study period was US$37,424. CONCLUSION: The seroprevalence rate of syphilis is extremely low in this study. This calls for a review of the policy of routine antenatal serology screening for syphilis in Maiduguri, Nigeria.

ASSESSMENT OF TRAINING ON MEASLES CASE-BASED SURVEILLANCE FOR DISEASE SURVEILLANCE AND NOTIFICATION OFFICERS (DSNOs) IN OSUN STATE.

BACKGROUND: Poor knowledge among Disease Surveillance and Notification Officers (DSNOs) as a result of high staff turnover has been identified as a major reason for sub-optimal surveillance performance in Osun State. Training aimed at strengthening the measles surveillance sub-system of the Integrated Disease Surveillance and Response (IDSR) was thus conducted for DSNOs in the state in May, 2006. OBJECTIVES: The immediate impact of the training on participants' knowledge and their role in the measles surveillance process was assessed as well as demographic factors associated with participants' knowledge. METHODS: Participants were DSNOs from the 30 Local Government Areas of the State and the Ife East Area office. Training materials were received from the WHO country office and adapted for use. Assessment of training was conducted by statistical evaluation of the pre- and post-tests results. RESULTS: Thirty-one DSNOs with a mean age of 36.2 (± 3.5) years participated. There were 14 (45.2%) males and 17 (54.8%) females and they had been employed for an average of 13.7 (± 2.2) years. Mean pre- and post-test scores were 31 and 61, respectively, and showed a significant statistical difference (paired t-test = 12.665, p=0.000). CONCLUSION: Training achieved its short-term objective. However, a correlation between knowledge and practice will be based on the subsequent surveillance performance.