Oral health-related quality of life and oral hygiene status among special need school students in amhara region, Ethiopia.

BACKGROUND: Oral conditions remain a substantial population health challenge worldwide. Poor oral health affects the quality of life as a result of pain or discomfort, tooth loss, impaired oral functioning, disfigurement, missing school time, loss of work hours, and sometimes even death. This study assessed the magnitude of Oral Health-Related Quality of Life (OHRQoL) and oral hygiene status and associated factors among special needs school students in the Amhara region. METHODS: An institution-based cross-sectional study was conducted from November 2020 to April 2021 in the Amhara Region, Ethiopia. A total of 443 randomly selected special needs students were included. A structured pretested interview-administered questionnaire was used for data collection. Bivariable and multivariable ordinal logistic regression models were fitted to identify the factors associated with oral hygiene status. The statistical significance of differences in mean OHIP-14 scores was assessed using the Kruskal-Wallis equality-of-populations rank and Wilcoxon rank-sum tests. Variables with a p-value less than 0.05 were considered statistically significant. RESULTS: Almost half 46.6% (95% CI: 42.1%, 51.4%) of the study participant had poor oral hygiene status. The median OHIP-14 score was 16 with an interquartile range from 14 to 20. The highest score was for functional limitation (mean: 1.45 (SD ± 0.70)) and the lowest score was for psychological disability (mean: 1.08 (SD ± 0.45)). Mother education, frequency of taking sugared foods, and the types of disabilities were significant predictors of the poor oral hygiene status of special needs students in the Amhara region. The students living in Dessie had higher OHIP-14 scores compared to those living in other places (Gondar, Bahir Dar, and Debre Markos). The students who never brush their teeth had lower OHIP-14 scores than those who brush sometime and once a day. Whereas, students affiliated with the orthodox religion had lower OHIP-14 scores compared to those affiliated with all other religions (Catholic, Muslim, and Protestant). CONCLUSION: A substantial amount of students with a disability had poor oral hygiene. The OHIP-14 scores indicated poor oral health-related quality of life. The study found that maternal education, frequency of taking sugared foods, and the types of disabilities were statistically significant factors associated with oral hygiene status.

Periodontal status of students living with disability in Amhara region, Ethiopia: a cross-sectional study.

BACKGROUND: Periodontal disease is the most common oral health problem among individuals living with disabilities. Any physical impairment and/or mental handicap can compromise the capability to perform oral health care. Individuals with poor oral hygiene practice were prone to dental caries, periodontal disease, and upper respiratory tract infections. Despite the high prevalence of disabled people in Ethiopia, data are scarce about their periodontal status. The aim of this study was to determine the prevalence and determinant factors of periodontal disease among students living with disability in the Amhara region. METHODS: A school-based cross-sectional study was done on eight special needs schools in Amhara regional state from November 30, 2020, to April 10, 2021. A simple random sampling technique using a computer random generator was employed to recruit the study participants. The participants were interviewed for sociodemographic characteristics, oral hygiene practice, type of disability, and medical condition through a pre-tested semi-structured questionnaire. The periodontal status of the participants was evaluated using the community periodontal index (CPI). Data entry was done using the Epi-data and analyzed using SPSS 26. Binary logistic regression analysis was used to identify the predictors of periodontal disease at a 5% level of significance. RESULTS: A total of 443 study participants were involved with a mean age of 15.84 ± 3.882. Among these, 27.5% (95%CI 23.4-32.0) had a periodontal pocket depth of ≥ 4 mm, and 56.7% had bleeding on probing. The prevalence of periodontal disease was higher in participants with poor oral health status (52.2%), dental caries (34.8%), class-2 malocclusion (46.1%), and low monthly income (30.4%), visually impaired (30%), and mentally disorder (29.9%). Age of above 18 years (AOR = 3.41, 95%CI 1.40, 8.28), low family monthly income (AOR = 2.21; 95%CI 1.22, 4.03), malocclusion (AOR = 1.59, 95%CI 1.01, 2.54), poor oral health status (AOR = 9.41; 95%CI 4.92, 17.98), and dental caries (AOR = 1.85, 95%CI 1.21, 2.82) were independent predictors of periodontal disease. CONCLUSIONS: A substantial amount of disabled school students in the study area had periodontal disease. The study found that there was a statistically significant association between age, family monthly income, malocclusion, oral health status, and dental caries with periodontal disease. The implementation of school oral health programs has a great benefit for the oral health status of disabled school students.

The prevalence of dental caries and associated factors among students living with disability in the Amhara region, Ethiopia.

OBJECTIVES: People living with disability are more vulnerable to dental caries and have a high decayed, missed, and filled permanent teeth (DMFT) index and untreated dental disease than nondisabled individuals. In Ethiopia, there is a dearth of information on the oral health status of the disabled population. Hence, this study aimed to determine the prevalence of dental caries and its predictors among special needs school students in the Amhara region, Ethiopia. METHODS: An institution-based cross-sectional study was done on special needs school students in the Amhara region from November 2020 to April 2021. The study participants were recruited using a simple random sampling technique using a computer random generator. Data collection was done using the World Health Organization oral health survey tool. Data entry was done using Epi-data 4.6 and analyzed using SPSS 26. A logistic regression model was used to identify the possible predictors of dental caries. RESULTS: Four hundred and forty-three students with a mean age of 15.8 ± 3.8 were included in the study. The prevalence of dental caries was 41.5% (95% confidence interval [CI]: 36.3, 46.0) in permanent dentition with a mean DMFT score of 1.3 ± 1.6. The prevalence of dental caries in primary dentition was 23.1% (95% CI: 11.9, 32.1) with a mean decayed, missed, and filled primary teeth (dmft) score of 1.9 ± 0.2. Being 7-12 years old (adjusted odds ratios [AOR] = 3.6, 95% CI: 1.6, 8.3), lower grade level (AOR = 2.4, 95% CI:1.3,4.4), poor oral hygiene status (AOR = 2.5, 95% CI: 1.3, 4.8), and lack of parental support during tooth brushing (AOR = 2.2, 95% CI: 1.2, 4.1) were independent predictors of dental caries. CONCLUSIONS: A significant amount of special needs school students in the study area had dental caries. Age, grade level, oral hygiene status, and lack of parent support during tooth brushing were independent predictors of dental caries.

Oral Health Status of Hearing-Impaired Students Attending Special Need Schools in Amhara Region, Ethiopia: A Cross-Sectional Study.

BACKGROUND: Oral health care is the most common unmet need among individuals with a disability. Individuals with a disability may have compromised oral health needs due to neglect from parents, socioeconomic problems, and communication barriers. In Ethiopia, there is a lack of data on oral health status of the hearing-impaired population. Therefore, this study aimed to assess the oral health status of hearing-impaired students in the Amhara region, Ethiopia. METHODS: A cross-sectional study was conducted from November 2020 to April 2021 on hearing-impaired students in Amhara region, Ethiopia. Data were collected using a pretested interview administered questionnaire and clinical examination. Oral cavity was evaluated using the simplified oral hygiene index, decayed, missed and filled teeth, and community periodontal index. Data analysis was done using SPSS 26.0, and logistic regression analysis was done to identify the risk factors of dental caries and periodontal disease. RESULTS: A total of 149 hearing impaired students with an age range of 7-30 years were involved in the study. The prevalence of periodontal disease and dental caries was 22.8% (95% CI: 16.8, 30.4) and 38.9% (95% CI; 32.2, 46.9), respectively. Being grade 1-4 student (AOR = 3.94, 95%: 1.16, 13.38), lack of formal education (AOR = 4.98, 95% CI: 1.00, 24.65), dental caries (AOR = 2.51, 95% CI: 1.08, 5.08) and bleeding on probing (AOR = 9.98, 95% CI: 3.69, 26.64) were statistically significant with periodontal disease. Grade level, parents' support during brushing, oral health status, and medication intake were independent factors for dental caries. CONCLUSION: In the present study, a significant number of hearing-impaired students had periodontal disease and dental caries. School oral health programs and caregivers assisted oral hygiene practices are essential to combat oral health problems in hearing-impaired students. Moreover, a nationwide prospective study with a large sample size will be required to reflect the oral health status of hearing-impaired individuals in the country.

Dental health problems and treatment-seeking behavior among special need school students in Amhara region, Ethiopia.

BACKGROUND: Oral diseases are a public health concern with a significant impact on the quality of life of individuals. Children with special needs face significant challenges in carrying out oral hygiene due to their disability, and they are more prone to poor oral health and illnesses. This study assessed dental health problems and treatment-seeking behaviors of special needs school students in Amhara region, Ethiopia. METHODS: An institution-based cross-sectional study was conducted from November 2020 to April 2021, in eight special needs schools located in the Amhara Regional State, Ethiopia. A total of 443 randomly selected special needs students were included. Data were collected using a structured interview-administered questionnaire. Bivariable and multivariable logistic regression models were fitted to identify factors associated with oral health problems and treatment-seeking behavior. A p-value of less than 0.05 was used to declare statistical significance. RESULTS: The prevalence of self-reported dental health problems and treatment-seeking behaviors among special needs school students was 46.1% (95% CI: 41.4%, 50.7%) and 60.3% (95% CI: 53.4%, 66.8%), respectively. Place of residence, grade level, religious affiliation, years lived with disability, and knowledge of dental health-related risk behaviors were associated with dental health problems. Whereas, place of residence, being hearing impaired, and having prior information about dental health problems were associated with dental treatment-seeking behavior. CONCLUSIONS: A significant number of special needs students reported dental problems and about 40% of them did not seek dental treatment. Oral hygiene practice and access to dental care services are important in the prevention of dental problems. Hence, oral hygiene promotion programs focusing on oral hygiene practice and dental treatment services are needed in special needs schools. It is also strongly suggested to incorporate oral health related information in health-related academic lessons to enhance optimum oral health among special needs students.

Positions and Types of Pterion in Adult Human Skulls: A Preliminary Study.

BACKGROUND: A trauma to the skull in the area of the pterion usually causes rupture of the middle meningeal artery leading to life- threatening epidural hematoma. The objective of the study is to assess the prevalence of different types of pterion and to determine its location using valuable bony landmarks. METHODS: On 90 dry adult human skulls of unknown sex, age and nationality the distance of different landmarks from pterion was measured using stainless steel sliding Vernier caliper. The data were analyzed using SPSS version-20 and an independent t-test analysis was implemented. A value of P< 0.05 was considered as statistically significant. RESULTS: A higher occurrence of sphenoparietal type of pterion with the absence of frontotemporal type was noted. About 23% and 77% of the suture types are found to be unilateral and bilateral, respectively. There was a statistically significant difference between right and left sides of the skull in distances from the center of pterion to frontozygomatic suture, root of zygomatic arch, inion and in central thickness pterion. CONCLUSION: This study showed that the most prevalent type of pterion is sphenoparietal, and revealed asymmetry in the distances from center of pterion to frontozygomatic suture, root of zygomatic arch and inion, and its central thickness. Such findings could offer worthy information about the type and location of pterion, which could be relevant to anatomists, neurosurgeons, forensic medicine specialist and anthropologists.

Predictors of congenital anomalies among newborns in Arsi zone public hospitals, Southeast Ethiopia: a case-control study.

BACKGROUND: Congenital anomaly is a partial or complete structural and/or functional defect during intrauterine life. Globally, major congenital anomalies account for 6% of all newborns among which about 94% of cases occurred in developing countries. In spite of its public health importance, very limited studies are reported in Ethiopia, and hardly any study in Arsi Zone. OBJECTIVES: To determine the predictors of congenital anomalies among newborns in Arsi Zone Public Hospitals, Southeast Ethiopia. METHODS: A multi-center institutional-based case-control study was conducted in 418 (105 cases and 313 controls) of newborns in Arsi Zone Public Hospitals. Descriptive analysis, binary and multivariable logistic regressions were implemented. RESULTS: In this study, women who have been drinking alcohol during pregnancy were 3.48 times more prone to have newborns with congenital anomalies than their counterparts (AOR = 3.48; 95% CI: 1.38, 8.74). The likelihood of having a newborn with congenital anomalies was six and four times higher for women who had a maternal illness (AOR = 6.10; 95%CI: 2.39, 15.57) and chewing khat during pregnancy (AOR = 4; 95%CI: 1.49, 10.65), respectively. Moreover, the lack of folic acid supplementation and pesticides during pregnancy were 3.25 and 4.76 times more likely to experience a newborn with congenital anomalies, respectively. CONCLUSION: Alcohol drinking, maternal illness, khat chewing, and chemical exposure during pregnancy had a significant association with the occurrence of congenital anomalies. While, taking folic acid supplements had a protective effect. Health experts and the community should take these factors into consideration and act accordingly.

Iron-rich food consumption and associated factors among children aged 6-23 months in sub-Saharan Africa: A multilevel analysis of Demographic and Health Surveys.

INTRODUCTION: Anemia remains a major public health problem for children in sub-Saharan Africa (SSA). Iron-rich foods consumption has a determinant role on the anemia status. Hence, this study aimed to determine the prevalence of good consumption of iron-rich foods and its associated factors among children aged 6-23 months in SSA. MATERIALS AND METHODS: The recent Demographic and Health Survey data sets of thirty-five SSA countries were used. Data were analyzed using STATA/MP version 16.0 and all statistical analyses were done after weighting the data. A generalized linear mixed model using Poisson regression with robust error variance was used to determine factors associated with good consumption of iron-rich food. Association of variables was declared at a p-value of ≤0.05 and adjusted prevalence ratio (aPR) ratio with its 95% confidence interval (CI) was calculated for each variable. RESULTS: The total weighted samples of 77,001 children aged 6-23 months were included. The prevalence of consumption of iron rich foods was 42.1% (95% CI: 41.78-42.48). Children with age of 12-17 (adjusted prevalence ratio (aPR) = 1.96, 95% CI: 1.89-2.04) and 18-23 months (aPR = 2.05, 95% CI: 1.97-2.14), who took drugs for intestinal parasites (aPR = 1.30, 95% CI: 1.26-1.34), with postnatal check within 2 months (aPR = 1.09, 95% CI: 1.06-1.13), and children from women with ANC visit of 1-3 (aPR = 1.31, 95% CI: 1.24-1.37) and ≥4 (aPR = 1.41, 95% CI: 1.34-1.48) had higher prevalence of good consumption of iron rich foods. Moreover, the prevalence of consumptions of iron rich foods was higher among children from; family with rich (aPR = 1.36, 95%CI: 1.30-1.42) and middle (aPR = 1.14 95% CI: 1.09-1.19) wealth index, and mother with media exposure (aPR = 1.26, 95%CI: 1.22-1.31). CONCLUSION: The prevalence of good consumption of iron-rich foods among children aged 6-23 months in SSA countries is low. Child factors, family factors, and community-level factors were significantly associated with consumption of iron rich foods. Strategies to increase the consumption of iron-rich foods during this critical stage of growth and development should be designed in SSA.

Prevalence of Dental Caries and Associated Factors in East Africa, 2000-2020: Systematic Review and Meta-Analysis.

Background: Dental caries affects mastication, growth and development, and school attendance and has a long-term psychological effect on affected individuals. In developing countries, the prevalence of dental caries is increasing due to the growing consumption of sugary foods, poor tooth brushing habits, and a low level of awareness about dental caries. Even if there was a high prevalence of dental caries in sub-Saharan Africa, there is a paucity of data on the prevalence of dental caries in East Africa. Hence, this study aimed to determine the prevalence of dental caries and associated factors in East Africa. Methods: A systematic search of articles was conducted in MEDLINE, Scopus, and Google Scholar using all the synonyms of dental caries in published literature (until December 2020) in East Africa. Important data were extracted using a standardized data extraction form prepared in Excel. Stata software (version 14.0) was used to calculate the pooled prevalence of dental caries. Besides, subgroup analysis was done based on country and dentition type. Moreover, associated factors of dental caries were assessed and the overall effect was presented in the form of odds ratios. The quality of the included studies was evaluated using the Joanna Briggs Institute reviewers' manual. Results: The overall pooled prevalence of dental caries was found to be 45.7% (95% CI = 38.0-53.4). The pooled prevalence was high in Eritrea (65.2%, 95% CI = 49.2-81.1), followed by Sudan (57.8%, 95% CI = 36.0-79.7), and a low prevalence was found in Tanzania (30.7%, 95% CI = 21.5-39.9). Moreover, the subgroup analysis revealed a prevalence of 50% (95% CI = 38.4-62.1) in permanent dentition and 41.3% (95% CI = 33.5-49.2) in mixed dentition. The overall mean decayed, missed, and filled permanent (DMFT) and primary (dmft) teeth were 1.941 (95% CI = 1.561-2.322) and 2.237 (95% CI = 1.293-3.181), respectively. High DMFT scores were reported in Sudan (3.146, 95% CI = 1.050-5.242) and Uganda (2.876, 95% CI = 2.186-3.565). Being female (OR = 1.34, 95% CI = 1.24-1.46) and having poor tooth brushing habit (OR = 1.967, 95% CI = 1.67-2.33) were independent risk factors of dental caries. Conclusion: The overall prevalence of dental caries was comparatively high. Being female and poor oral health practice were independent risk factors of dental caries. The Ministry of Health of the member countries, along with dental associations of each country, ought to offer due attention to strengthen the oral health program in schools and primary health care centers and the implementation of school water fluoridation.

Association between circle of Willis and ischemic stroke: a systematic review and meta-analysis.

BACKGROUND: Circle of Willis is the main structure that provides constant and regular blood flow to the brain, protects the brain from ischemia. Stroke has remained the second leading cause of death globally in the last fifteen years. It is the fifth leading cause of death in the United States. It is also the leading cause of serious adult disability. Interlinked problems related to ischemic stroke are become increasing nowadays. Strong evidence is needed about the pooled measure of association between the circle of Willis (COW) and ischemic stroke. Therefore, this systematic review and meta-analysis were intended to provide compressive and up to date evidence on the association between the variations of COW and ischemic stroke using the available studies. METHODS: PubMed, Google Scholar, Science Direct, and Cochrane Library databases were systematically searched. All essential data were extracted using a standardized data extraction template. The heterogeneity across studies was assessed by using the Cochrane Q test statistic, I2 test statistic, and P-values. A fixed-effect model was used to estimate the pooled effect of the measure association between COW and ischemic stroke. RESULTS: In this meta-analysis, 2,718 participants were involved. The pooled measure of association between COW and ischemic stroke was 1.38 (95% CI 0.87, 2.19). Therefore, this indicated that the presence of any variation in COW was 1.38 times more likely to develop ischemic stroke as compared to the patent COW. The presence of hypoplasia/incompleteness in a posterior communicating artery (PcomA) [Pooled OR: 1.34 (95% CI 0.80, 2.25)] and anterior communicating artery (AcomA) [Pooled OR: 1.32 (95% CI 0.81, 2.19)] were a contributing factor for the development of ischemic stroke. Hypertension was the most common comorbid condition, followed by diabetes mellitus, smoking, coronary artery disease, and hyperlipidemia. CONCLUSIONS: There was a non-significant positive association between COW variation and ischemic stroke in this meta-analysis.

Morphometry of Asterion and its Proximity to Dural Venous Sinuses in Northwest Ethiopian Adult Skulls.

INTRODUCTION: The asterion is a craniometric point in the norma lateralis of skull situated at the confluence of parietal, temporal, and occipital bones. The aim of this study is to determine the type and mapping of asterion and its relation with transverse-sigmoid venous sinus junction (TSSJ). MATERIALS AND METHODS: Sixty-one dry and intact adult human skulls of unknown sex and age were used. The measurements were implemented using stainless steel sliding vernier caliper. The data were analyzed using SPSS version-20 and independent t-test analysis was implemented. P < 0.05 was considered as statistically significant. RESULTS: In the study, type II was found to be the predominant asterion type. There was statistically significant difference in measurements of central thickness of right and left sides of asterion (P = 0.04, Eta squared = 0.025). Besides, the TSSJ was situated above the asterion and at the level of asterion in 39.34% and 60.66 of the cases, respectively. CONCLUSIONS: The Northwest Ethiopian population has a high incidence of type II asterion. In most of the cases, the TSSJ is situated at the level of the asterion. The finding of the present study may be useful to neurosurgeons to reduce the risk during posterior cranial fossa surgeries. This work may also offer worthy information to radiologists, anthropologists, anatomists, and forensic scientists.

Measuring newborn foot length to estimate gestational age in a high risk Northwest Ethiopian population.

INTRODUCTION: Preterm birth is defined as all births before 37 completed weeks of gestation. Globally, the prevalence rate of preterm birth ranges from 47.5 to 137 per 1000 live births. In Ethiopia, the prevalence of preterm birth is 10.1%. Several anthropometric parameters, particularly, head circumference and foot length(FL) have been used as a proxy measure for gestational age(GA). OBJECTIVE: To assess the use of newborn foot length as a screening tool to identify preterm newborns and correlation factors at the University of Gondar Comprehensive Specialized Hospital (UOG CSH), Northwest Ethiopia. METHODS: Institutional based cross-sectional study design was conducted on 205 newborns admitted to a neonatal intensive care unit, UOG CSH. Systematic sampling technique was employed. Optimal cutoff newborn foot length and area under the curve (AUC) was calculated by the receiver operating characteristic curve analysis to assess the power of foot length measurement to diagnosis prematurity. RESULTS: The mean foot length was 7.41±0.67 cm with a range of 5.4-8.6 cm. Gestational age had a significant strong positive correlation with foot length(r = 0.865). The regression equation derived was GA = 4.5*FL + 3.61. Foot length had strong power (AUC = 0.99) to differentiate preterm from term newborns. A threshold newborn foot length of ≤7.35 cm had a sensitivity and specificity of 98.5% and 96.3%, respectively to predict prematurity. CONCLUSION: Foot length had a high sensitivity and specificity in identifying preterm newborns, making it a reliable tool to identify preterm birth in a rural setting.

Prediction of Number of Casts and Need of Tenotomy Using Pirani Score in the Management of Clubfoot.

BACKGROUND: Clubfoot also called as congenital tailpipes equinovarus is a complex ankle and foot deformity characterized by forefoot adduction and supination, midfoot cavus and hindfoot varus and equinus. It is estimated that more than 100,000 babies are born each year worldwide with clubfoot, and 80% are seen in developing nations. Different scoring systems are used for grading the severity of deformity or monitoring the natural history of clubfoot. The Pirani scoring system is now routinely used in most clubfoot clinics, including Cure Ethiopia, Children's Hospital. METHODS: A facility based retrospective study was conducted on 278 idiopathic club feet successfully treated by the Ponseti method and scored by Pirani system between September 2013/14 to September 2017/2018. Age at presentation, number of casts required, need for percutaneous Achilles tenotomy, casting effects were recorded. RESULTS: A total of 287 clinical folders of children were retrieved (424 feet). The mean (±SD) number of casts required for correction of the deformity was 5.54 ±â€Š1.63. The number of cast required for correction is significantly, and positively correlated with initial severity of Pirani score (r = 0.62 for right foot; r = 0.675 for left foot). There is a significant difference on the overall initial Pirani score between tenotomy and non- tenotomy group (P value < 0.001). CONCLUSION: The study revealed that severity of initial Pirani score can be used to estimate the number of Ponseti cast required for correction of clubfoot deformity and the need for tenotomy. Besides, the number of Ponseti cast required may not be affected by age of a child at the commencement of treatment.

Anatomical Variation in Morphometry and Morphology of the Foramen Magnum and Occipital Condyle in Dried Adult Skulls.

BACKGROUND: The foramen magnum (FM) is the largest opening and is outlet through which medulla oblongata and spinal cord along with meninges, vertebral arteries, anterior and posterior spinal arteries, tectorial membrane, alar ligaments, and spinal branch of the accessory nerve. Occipital condyle (OC) is an important part of craniovertebral or craniocervical junction located anterolaterally on either side of the FM. The objective of the study was to assess variations of FM and OC in Ethiopian dried adult skulls. METHODS: Observation-based descriptive study design was employed. The study was undertaken in 54 FM and 108 OC of 54 adult Ethiopian skulls. The morphometry of FM and OC were determined using a sliding vernier caliper. RESULTS: The mean values of anteroposterior and transverse diameters of the FM were 35.19 and 30.17 mm, respectively, and the mean area of the FM was 853.36 mm. The shapes of FM were determined as round in 22.2%, oval in 18.5%, egg like in 20.4%, triangular in 3.7%, pentagonal in 11.1%, hexagonal in 7.4%, irregular in 13%, and rectangular in 3.7% of the cases. The mean length of right and left OC was 25.69 and 26.96 mm, respectively, and the mean widths of the right and left OC were 12.76 and 13.04 mm, respectively. CONCLUSION: Our study identified various shapes of FM and diameter. The anteroposterior diameter is greater than the transverse diameter. The morphometric study of OC confirmed the length of left side is significantly greater than the right side.

Macroscopic morphological variation of human placenta in normotensive and pre-eclamptic pregnant mothers, Northwest Ethiopia

The normal growth and development of the fetus depends on the proper growth and functioning of the placenta. The macroscopic morphology of the placenta is highly affected by pre-eclampsia. This study was carried out to assess macroscopic morphological variation of the human placenta among normotensive and pre-eclamptic pregnant mothers in Northwest Ethiopia. A cross-sectional study was conducted on 200 term placentas. One hundred fifty placentas from normotensive mothers and 50 placentas from pre-eclamptic mothers were included in the study. Placental parameters such as shape, weight, diameter, thickness and number of cotyledons were examined. Fetal weight was also detected. The data were analyzed by using independent two-sample t-test and chi-square test. According to this study, the majority (68%) of placentas in normotensive participants were discoid-shaped and 18% oval. While 54% of placenta in pre-eclamptic mothers were oval-shaped and 24% were irregular. Mean placental weight, diameter and number of cotyledon in pregnant mothers with pre-eclampsia were significantly reduced as compared to normotensive mothers. The mean birth weight in pre-eclamptic pregnancies was significantly (p = 0.0001) lower than the mean birth weight in normotensive pregnancies. As a conclusion, mean fetal weight, placental weight, diameter, thickness and numbers of cotyledon in pre-eclamptic mothers were significantly lower than in normotensive mothers (p-value < 0.05). Placenta shape difference between normotensive and pre-eclamptic mothers was detected (p-value < 0.001)

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Anterior fontanelle size among term neonates on the first day of life born at University of Gondar Hospital, Northwest Ethiopia.

BACKGROUND: Anterior fontanelle is the largest, prominent and most important fontanelle, which is used for clinical evaluation. It is mainly characterized by its size and shape variation and is possibly influenced by gender, race and genetics. Understanding the variation of anterior fontanelle is used for recognition of different medical disorders and abnormal skeletal morphogenesis. OBJECTIVE: To determine the mean size of anterior fontanelle among term neonates on the first day of life born at University of Gondar Hospital, Gondar Town, Northwest Ethiopia, 2018. METHODS: Descriptive cross sectional study design was undertaken in 384 term and apparently healthy neonates, using standard methods. Descriptive analysis, student t-test, one way ANOVA and Pearson correlation coefficient were implemented. RESULTS: In this study, the mean size of anterior fontanelle in term neonates was 3.00 ± 0.62 cm (range 1.70-5.50 cm). The mean size of anterior fontanelle was 3.10 ± 0.66 cm for males, and 2.88 ± 0.57 cm for females. There was statistically significant difference in anterior fontanelle size in neonates of different genders (p<0.001), mode of delivery (p<0.001) and duration of labour (p = 0.006). However, the size of anterior fontanelle was not significantly affected by the birth order, onset of labour and socio-demographic variables of the mother except occupation of the mother (p = 0.01). There was a significant positive correlation between the mean size of anterior fontanelle with birth weight (r = 0.11; p = 0.04) and head circumference (r = 0.17; p = 0.001). CONCLUSIONS: At term, male neonates had significantly larger anterior fontanelle than female neonates and anterior fontanelle size has a direct relationship with birth weight and head circumference.

Oxidative stress affects processing of amyloid precursor protein in vascular endothelial cells.

BACKGROUND: Oxidative stress is thought to be a key player in the pathogenesis of neurodegenerative dementia, including Alzheimer's disease (AD). It has been assumed that oxidative stress contributes to the ß-amyloid deposition in cerebral blood vessels. METHODS: In order to prove this hypothesis, we examined the effect of oxidative stress on the processing of amyloid precursor protein (APP) in primary endothelial cells (EC) derived from cerebral cortical tissue of transgenic Tg2576 mice. Following exposure of EC by 1 µM hydrogen peroxide for up to 48 hours, formation and secretion of APP cleavage products sAPPα and sAPPß into the culture medium as well as the expression of endothelial APP were assessed. RESULTS: Oxidative stress resulted in enhanced secretion of sAPPß into the culture medium as compared to controls (absence of hydrogen peroxide), which was accompanied by an increased APP expression, induction of VEGF synthesis, nitric oxide and oxygen free radicals productions, and differential changes of endothelial phospo-p42/44 MAPK expression. CONCLUSION: The data suggest that oxidative stress may represent a major risk factor in causing Aß deposition in the brain vascular system by initiating the amyloidogenic route of endothelial APP processing. The enhanced ß-secretase activity following oxidative stress exposure, possibly promoted by phosphorylation of p42/44 MAPK.

A Two-Year Retrospective Study on the Pattern of Dental Trauma and its Etiology, Northwest Ethiopia.

BACKGROUND: In Ethiopia traumatic dental injury (TDI) is seriously neglected, regardless of its current increased incidence rate. OBJECTIVE: To determine the etiology and types of TDIs among traumatized patients admitted to Gondar University Hospital Dental Clinic (GUHDC) between September 2013 and August 2015. METHODS: A retrospective descriptive study design was conducted using previous medical records of 309 patients. Records were retrieved, reviewed and analyzed. RESULTS: A total of 309 dental traumatic patients with a mean age of 24.32±5.47 were admitted to the GUHDC. It was found that TDIs were most frequent in males (80.3%), 21-30 age range (47.2%) and rural residents (58.3%). Interpersonal violence (74.1%) and road traffic accidents (23.3%) were the most common etiological factors. The study also revealed that maxillary central incisor was the most frequently affected tooth.

Anatomical study of prefixed versus postfixed brachial plexuses in adult human cadaver.

BACKGROUND: The brachial plexus is usually formed by the fusion of anterior primary rami of the fifth to eighth cervical and the first thoracic spinal nerves. Variations in the formation of the brachial plexus may occur. Variations in brachial plexus anatomy are important to radiologists, surgeons and anaesthesiologists performing surgical procedures in the neck, axilla and upper limb regions. These variations may lead to deviation from the expected dermatome distribution as well as differences in the motor innervation of muscles of the upper limb. This study is aimed to describe the anatomical variations of brachial plexus in its formation among 20 Ethiopian cadavers. METHODS: Observational based study was conducted by using 20 cadavers obtained from the Department of Human Anatomy at University of Gondar, Bahir Dar, Addis Ababa, Hawasa, Hayat Medical College and St Paul Hospital Millennium Medical College. Data analysis was conducted using thematic approaches. RESULTS: A total of 20 cadavers examined bilaterally for the formation of brachial plexus. Of the 40 sides, 30 sides (75%) were found normal, seven sides (17.5%) prefixed, three sides (7.5%) postfixed and one side of the cadaver lacks cord formation. CONCLUSION: The brachial plexus formation in most subjects is found to be normal. Among the variants, the numbers of the prefixed brachial plexuses are greater than the postfixed brachial plexuses.

Expression of vascular endothelial growth factor (VEGF) mRNA, VEGF receptor 2 (Flk-1) mRNA, and of VEGF co-receptor neuropilin (Nrp)-1 mRNA in brain tissue of aging Tg2576 mice by in situ hybridization.

Vascular endothelial growth factor (VEGF) has been characterized as a heparin binding angiogenic growth factor displaying high specificity for endothelial cells. It is profoundly accumulated and co-localized with amyloid beta (Aß) plaques in the brain of Alzheimer's disease patients. In order to examine the effect of Aß plaques on the expression level of VEGF mRNA and its receptors, brain tissue of both transgenic Tg2576 and wild type mice at ages ranging from 13 to 22 months was subjected to in situ hybridization followed by densitometric assessment using computer-assisted image analysis. Strong expression of VEGF mRNA, fetal liver kinase (Flk)-1 mRNA, and neuropilin (Nrp)-1 mRNA in the piriform, entorhinal, somatosensory, frontal cortex and hippocampal formation of both transgenic and non-transgenic mice brain was detected. Developmentally, only expression of VEGF mRNA was increased with age in the entorhinal, and somatosensory cortex of wild type mice. In 20-month-old transgenic Tg2576 mice, up-regulation of VEGF mRNA, Flk-1 mRNA, and Nrp-1 mRNA transcripts was observed in the entorhinal cortex compared to age-matched wild type mice. Our data suggest up-regulation of VEGF mRNA, Flk-1 mRNA and Nrp-1 mRNA, at least in the entorhinal cortex at ages when Aß deposition in Tg2576 is typically increasing.