Bottom-Up Masking of Si/Ge Surfaces and Nanowire Heterostructures via Surface-Initiated Polymerization and Selective Etching

The fully bottom-up and scalable synthesis of complex micro/nanoscale materials and functional devices requires masking methods to define key features and direct the deposition of various coatings and films. Here, we demonstrate selective coaxial lithography via etching of surfaces (SCALES), an enabling bottom-up process to add polymer masks to micro/nanoscale objects. SCALES is a three-step process, including (1) bottom-up synthesis of compositionally modulated structures, (2) surface-initiated polymerization of a conformal mask, and (3) selective removal of the mask only from regions whose underlying surface is susceptible to an etchant. We demonstrate the key features of and characterize the SCALES process with a series of model Si/Ge systems: Si and Ge wafers, Si and Ge nanowires, and Si/Ge heterostructure nanowires.

Comparisons of ganglion cell-inner plexiform layer loss patterns and its diagnostic performance between normal tension glaucoma and primary open angle glaucoma: a detailed, severity-based study

AIM

To evaluate the patterns of macular ganglion cell-inner plexiform layer (GCIPL) loss in normal tension glaucoma (NTG) and primary open angle glaucoma (POAG) in a detailed, disease severity-matched way; and to assess the diagnostic capabilities of GCIPL thickness parameters in discriminating NTG or POAG from normal subjects.

METHODS

A total of 157 eyes of 157 subjects, including 57 normal eyes, 51 eyes with POAG and 49 eyes with NTG were enrolled and strictly matched in age, refraction, and disease severity between POAG and NTG groups. The average, minimum, superotemporal, superior, superonasal, inferonasal, inferior, and inferotemporal GCIPL thickness, and the average, superior, temporal, inferior, and nasal retinal nerve fiber layer (RNFL) thickness were obtained by Cirrus optical coherence tomography (OCT). The diagnostic capabilities of OCT parameters were assessed by area under receiver operating characteristic (AUROC) curves.

RESULTS

Among all the OCT thickness parameters, no statistical significant difference between NTG group and POAG group was found (all P>0.05). In discriminating NTG or POAG from normal subjects, the average and inferior RNFL thickness, and the minimum GCIPL thickness had better diagnostic capabilities. There was no significant difference in AUROC curve between the best GCIPL thickness parameter (minimum GCIPL) and the best RNFL thickness parameter in discriminating NTG (inferior RNFL; P=0.076) and indiscriminating POAG (average RNFL; P=0.913) from normal eyes.

CONCLUSION

Localized GCIPL loss, especially in the inferior and inferotemporal sectors, is more common in NTG than in POAG. Among all the GCIPL thickness parameters, the minimum GCIPL thickness has the best diagnostic performance in differentiating NTG or POAG from normal subjects, which is comparable to that of the average and inferior RNFL thickness.

Male breast cancer in the United States: Treatment patterns and prognostic factors in the 21st century

BACKGROUND

Male breast cancer (MBC) is a rare disease for which there is limited understanding of treatment patterns and prognostic factors.

METHODS

Men with TNM stage I to stage III breast cancer diagnosed between 2004 and 2014 in the National Cancer Data Base were included. Trends in treatment modalities were described using the average annual percentage change (AAPC) and estimated using Joinpoint software for the analysis of trends. Kaplan-Meier curves and the multivariate Cox proportional hazards regression model were used to compare survival between subgroups and to identify prognostic factors.

RESULTS

A total of 10,873 MBC cases were included, with a median age at diagnosis of 64 years. Breast-conserving surgery was performed in 24% of patients, and 70% of patients undergoing breast conservation received radiotherapy. Approximately 44% of patients received chemotherapy, and 62% of patients with estrogen receptor-positive disease received endocrine therapy. Oncotype DX was ordered in 35% of patients with lymph node-negative, estrogen receptor-positive/human epidermal growth factor receptor 2 (HER2)-negative tumors. During the study period, there was a significant increase in the rates of total mastectomy, contralateral prophylactic mastectomy, radiotherapy after breast conservation, ordering of Oncotype DX, and the use of endocrine therapy (P < .05). On multivariate analysis, factors found to be associated with worse overall survival were older age, black race, higher Charlson Comorbidity Index, high tumor grade and stage of disease, and undergoing total mastectomy. Residing in a higher income area; having progesterone receptor-positive tumors; and receipt of chemotherapy, radiotherapy, and endocrine therapy were associated with better overall survival.

CONCLUSIONS

Despite the lack of prospective randomized trials in patients with MBC, the results of the current study demonstrated that the treatment of this disease has evolved over the years. These findings further the understanding of the modern treatment and prognosis of MBC, and identify several areas for further research.

Patterns of Substance Use among Patients in Addiction Rehabilitation in Jordan

Background: This study aimed to identify pattern of substance use among patients at two public addiction rehabilitation centers in Amman. It provided a description of substance use career and assessment of addiction severity, quality of life and quality of sleep among participants.Methods: A quantitative cross-sectional study using a structured data collection form consisting of 4 parts: 1. General data including the demographic characteristics, medical history and career of drug abuse. 2. Severity of addiction using the severity of dependence scale (SDS). 3. Quality of life measured by the EQ-5D and 4. Quality of sleep measured by the insomnia severity index (ISI) scale.Results: A total of 93 patients from 2 treatment settings were recruited over 5 months. The total number of actively used substances was 196, with an average of 2 substances per patient. Alcohol and synthetic cannabinoids were the two most commonly used substances (39.8% and 38.7% respectively) followed by benzodiazepines (33.4%). A notable drop in heroin use was observed (5.4%, 5 out of 23 opioid user) compared to the years 2007-2009. The mean SDS score among patients was 11.43 (SD ± 3.48) indicating high dependence. Sleep problems were reported by 45% of patients. Data showed a significant role of community pharmacies in supplying drugs of abuse for users.Conclusion: Pattern of substance use changed significantly in Jordan with synthetic cannabinoids being of the top substances used and heroin use dropping. Actions should be taken to reframe the legalization of dispensing certain drugs by pharmacists without a prescription.

A Ten-Year Review of the Pattern and Outcome of Childhood Diabetes in Two State Teaching Hospitals in South-West Nigeria

BACKGROUND

Childhood diabetes mellitus is a poorly researched topic in Nigeria. Its contribution to morbidity and mortality is vague. This study intends to provide additional information to the background data in Nigeria and hopefully proffers strategies to improving the outcome of this disease.

METHODS

This is a retrospective descriptive study of all children managed for childhood diabetes mellitus at the Ekiti State University Teaching Hospital (EKSUTH) and LAUTECH Teaching Hospital (LTH), South West Nigeria, over a 10 year period. Relevant information was obtained from the case notes of all affected children. Data obtained were analysed with SPSS version 20 software.

RESULTS

A total of 20 children were treated for diabetes mellitus (DM); there were 7 (35.0%) boys and 13 (65.0%) girls giving a M:F ratio of 1.0:1.9. Age range at presentation was 5 to 16 years and the mean age at presentation was 12.7 ± 2.89 years. Diabetic ketoacidosis (DKA) was the most common form of presentation in 13 (65.0%). Most [18 (90.0%)] of the patients had type 1 DM. Type 2 DM and glucocorticoid-induced diabetes mellitus were recorded in a case each, Eighteen (90%)patients had not been previously diagnosed by any form of screening prior to their presentation and admission in the hospital. Seven (35.0%) of the patient's care were affected by parental financial constraints. Five mortalities were recorded and one left against medical advice while the majority [14 (70.4%)] were discharged well and alive. The association between the greater numbers of deaths recorded in children with financial constraints was statistically significant (p < 0.05).

CONCLUSION

Type 1 DM remains the most predominant form of diabetes in children and most of the patients presented in DKA. The proportion of deaths in this study is unacceptably high. There is a need to proffer strategies for earlier detection and management of children with diabetes mellitus prior to the onset or development of DKA and there is a need to assist with the funding of the care of children with diabetes mellitus.

Patterns of Deterioration in Moderate Patients With COVID-19 From Jan 2020 to Mar 2020: A Multi-Center, Retrospective Cohort Study in China

Background: Around the globe, moderate cases account for the largest proportion of all coronavirus disease 2019 (COVID-19) patients, and deteriorated moderate patients contribute the most in mortality. However, published articles failed to address the deterioration details of moderate cases, especially on when and how they deteriorated. Methods: All moderate COVID-19 patients hospitalized in Guangdong Province from January 14 to March 16, 2020, were included in this multicenter retrospective cohort study and were divided into deteriorated and non-deteriorated groups according to clinical status. Symptoms and demographic, therapeutic, and laboratory test result characteristics were collected to explore the features of disease deterioration. Results: Of 1,168 moderate patients included, 148 (13%) deteriorated to severe (130 cases) or critical (18 cases) status. Over 20% of the older subgroup (>50 years old) showed deterioration. The median time for deterioration was 11 days after onset [interquartile range (IQR) 9-14 days]. In addition, 12.2% severe cases could further develop to critical status after 3 days (IQR 2-6.5 days) of having a severe condition. Respiratory dysfunction and hypoxia were the major manifestations as disease deterioration, while 76 cases (52.1%) showed respiratory rate >30 breaths/min, 119 cases (80.4%) showed SaO₂ <93%, 100 cases (67.5%) had 201 < PaO₂/FiO₂ < 300, and 27 cases (18.9%) had blood lactic acid >2.0 mmol/L. In view of multiple organ dysfunction, 87.8% of acute respiratory distress syndrome (ARDS), 20.2% of acute kidney injury (AKI), 6.8% of coagulopathy, 4% of acute heart failure (AHF), 3.4% of acute hepatic injury (AHI), and 5.4% of shock occurred in deteriorated patients, while organ injury occurred in the following sequence: ARDS, AKI, AHF, coagulopathy, AHI, and shock. Conclusions: The deteriorated pattern of moderate COVID-19 patients is characterized as the 11th day from onset (IQR 9-14 days) being an important time point of disease deterioration with further exacerbation to critical condition in 3 days (IQR 2-6.5 days), A RDS followed by AKI being the typical modes of sequential organ damage.

Patterns of Referral to Clinical Psychology Services in the Ministry of Health Malaysia

Background

This descriptive study identifies the demographic characteristics and patterns of referral to clinical psychology services, which include types of diagnosis, types of referral and source of referrals in child, adolescent, adult and geriatric cases in Malaysia.

Methods

We utilised 2,179 referrals between January and December 2015 from six general hospitals and three mental health institutions that provide clinical psychology services.

Results

The percentage of male referrals (60.3%) is higher than that of female referrals (39.7%). Adult cases had the highest percentage of referrals (48.2%). Children (48.8%) and adolescent (28.1%) cases were mainly referred for psychological assessment. Meanwhile, adult cases (74.8%) were mainly referred for psychological intervention. Neurodevelopmental disorders was the diagnosis with the highest percentage of referrals recorded (41.4%), followed by depressive disorders (13.3%) and anxiety disorders (12.7%), and the combination of other disorders. Psychiatrists provided the highest number of referrals (82.2%), which is unsurprising as both fields are closely related.

Conclusion

Clinical psychology services within the Ministry of Health (MOH) Malaysia play an important role in mental health care.

Pattern of limb amputations in Liberia

Background:

Amputation is one of the oldest known surgical procedures. It has been one of the modalities of applying judgment and treatment. Its method and indications has evolved over time. Modern amputation is regarded as a part of treatment rather than failure of treatment. Amputation is the removal of a limb or part of a limb through on or more bone. When through a joint is referred to as disarticulation. Data on the profile and pattern of amputation in Liberia will add to the body of knowledge.

Aim and Objectives:

Is to describe the pattern of limb of amputations in Liberia. Also to describe the anatomical variations of limb amputations in Liberia.

Patients and Method:

A retrospective study of all patients that underwent limb amputation surgeries in the John F Kennedy Memorial (JFK M), Hospital, Monrovia Liberia between January 2010 to December 2015.

Results:

100 patients had limb amputations between 2010 and 2015. Males(73) to female(27) ratio were 2.4:1. The age range was 9 - 91 years. Mean age was 42.9 years. The indications for amputations were Trauma 24%, Diabetes 29%, Gangrene (6%), Chronic ulcer (25%), Tumour (5%). Below knee(47%), Above Knee(45%), Below elbow(2%), Above Elbow(2%), Knee Disarticulation(2%), and Big Toe Disarticulation(2%).

Conclusion:

The profile of Limb amputation in Liberia is not very different from what is obtaining in the region. However the limitations of histology and other investigative procedure have affected the accurate diagnosis of certain conditions like tumours.

Identifying Microbiota Signature and Functional Rules Associated With Bacterial Subtypes in Human Intestine

Gut microbiomes are integral microflora located in the human intestine with particular symbiosis. Among all microorganisms in the human intestine, bacteria are the most significant subgroup that contains many unique and functional species. The distribution patterns of bacteria in the human intestine not only reflect the different microenvironments in different sections of the intestine but also indicate that bacteria may have unique biological functions corresponding to their proper regions of the intestine. However, describing the functional differences between the bacterial subgroups and their distributions in different individuals is difficult using traditional computational approaches. Here, we first attempted to introduce four effective sets of bacterial features from independent databases. We then presented a novel computational approach to identify potential distinctive features among bacterial subgroups based on a systematic dataset on the gut microbiome from approximately 1,500 human gut bacterial strains. We also established a group of quantitative rules for explaining such distinctions. Results may reveal the microstructural characteristics of the intestinal flora and deepen our understanding on the regulatory role of bacterial subgroups in the human intestine.

Ossa Sesamoidea - prevalence of sesamoid bones in human hands

BACKGROUND

This study describes the morphology of sesamoid bones in the human hand. Ultrasound imaging was used to record the presence and measurements of sesamoids in 120 hands of 60 healthy, young adults of Caucasian ethnicity.

MATERIALS AND METHODS

The mean number of sesamoid bones was 4.16 in the left hand and 4.03 in the right hand. 21.6% of cases showed asymmetry between the right hand and the left. There was a significant difference in the prevalence of sesamoid bones between right and left hand in males in this study. Females show a higher incidence of sesamoid bones overall, but do not demonstrate a significant difference between the sides.

RESULTS

Prevalence findings: Two in the 1st Metacarpophalangeal joint (MCPJ) in 99.2% of cases, with one case of a single bone. One in the 2nd MCPJ in 43.3% of cases. One in the 5th MCPJ in 84.2% of cases. One in the 1st Interphalangeal joint (IPJ) in 83.4%of cases. Aside from that there was one case of sesamoid in the 3rd MCPJ and separate case of sesamoid in the 3rd proximal IPJ.

CONCLUSIONS

Moreover, this study discusses discrepancies of opinion regarding sesamoid bones in morphological research.

Morphological patterns of anaemia among pregnant women from Sudan

Background

Morphological patterns of anaemia in pregnancy are considered essential for classification, diagnosis and management of patients, especially in regions with high maternal mortality like Sudan.

Objectives

This study evaluated morphological patterns of anaemia among pregnant women in Sudan and morphological differences across characteristics of participants.

Methods

This cross-sectional study was conducted from September 2016 to February 2017. A total of 200 women were selected according to specific criteria. Laboratory tests were performed for complete blood count, blood smears were performed for morphology and vitamin B12, folate and iron levels were measured. Participants were classified as: normochromic normocytic, microcytic hypochromic, macrocytic or dimorphic. Further classification based on haemoglobin levels was also performed.

Results

A total of 116 participants (58%) had a dimorphic pattern, followed by 50 participants (25%) with a microcytic hypochromic pattern, 20 participants (10%) with a macrocytic pattern and 14 participants (7%) with a normochromic normocytic pattern. Participants with the dimorphic pattern also had low levels of iron and folate. The majority of dimorphic participants presented with mild anaemia, whereas the majority of participants with the microcytic hypochromic pattern presented with moderate or severe anaemia. A high percentage of participants in late pregnancy had the dimorphic pattern, and there were significant differences in the degree of anaemia by parity, gestational age and regular intake of haematinic supplements.

Conclusion

The most frequent morphological pattern of anaemia in this study was dimorphic, followed by microcytic hypochromic, macrocytic and normochromic patterns. Morphological patterns appeared to predict types of vitamin and mineral deficiency and the degree of anaemia.

Pattern of noma (cancrum oris) and its risk factors in Northwestern Nigeria: A hospital-based retrospective study

Background:

Noma (cancrum oris) remains the scourge of children and the “face of poverty” in Sub-Saharan Africa. Recent data on the burden of noma and its risk factors are needed for evaluating and redesigning interventions for its prevention and control.

Objectives:

This study aimed to determine the pattern of noma and its risk factors in Northwestern Nigeria.

Materials and Methods:

It was a retrospective study that looked into cases of noma (cancrum oris) admitted into the Noma Children Hospital, Sokoto, Nigeria, between January 1999 and December 2011. Information on patients’ bio-data, the site and severity of lesions, and presence of trismus and its severity were extracted from the patients’ case files and analyzed using descriptive statistics.

Results:

One hundred and fifty-nine (8.3%) of the 1923 patients admitted to the hospital from January 1999 to December 2011 were diagnosed with fresh noma. The mean age of the patients was 3.0 ± 1.4 years, and majority of them, 139 (87.4%) were aged 1–5 years. The soft-tissue lesions essentially involved multiple sites but most commonly the outer and inner cheeks (84.3%). The most common risk factors identified were measles (47.2%) and protein-energy malnutrition (42.1%). There were rises and falls in the prevalence of noma in the period studied.

Conclusion:

This study showed a high burden of noma in Northwestern Nigeria, mostly among children aged 1–5 years, and with soft-tissue lesions involving multiple sites. Measles and malnutrition were the major risk factors identified, and the disease trend showed a wave-like pattern. There is an urgent need to eliminate the disease in Nigeria through prevention and control of infectious diseases and malnutrition.

A Quantitative Clinicopathological Signature for Predicting Recurrence Risk of Pancreatic Ductal Adenocarcinoma After Radical Resection

Recurrence and distant metastases were main reasons of unfavorable outcomes for patients with pancreatic ductal adenocarcinoma (PDAC) after surgery. The aim of this study was to describe the patterns, timing, and predictors of recurrence or metastasis in PDAC patients after curative surgery. Patients with PDAC who underwent radical pancreatectomy were included. Associations between clinicopathological and radiological characteristics and specific pattern of progression were investigated. Least absolute shrinkage and selection operator (LASSO) and Cox regression were applied to assess the prognostic factors for overall survival (OS) and progression-free survival (PFS). A total of 302 patients were included into present study, and 173 patients were documented as recurrence after a median survival of 24.7 months. More than half of patients recurred after 12 months after surgery, and the liver was the most common metastatic site. Decreased time interval to progression, elevated carbohydrate antigen 19-9 (CA19-9) level, and lymph node (LN)16 metastasis were independent predictors for reduced OS. Independent prognostic factors for PFS included elevated carcinoembryonic antigen (CEA) level, local progression, liver or lung-only metastasis, local + distant progression, multiple metastases, LN16 metastasis, imaging tumor size, chemotherapy, and tumor–node–metastasis (TNM) stage. The predictive system showed valuable prediction performance with values of concordance indexes (C-indexes) and the area under the receiver operating characteristic curve (AUC) over 0.80. Different survival curves and predictive factors for specific patterns of disease progression suggested the biological heterogeneity, providing new versions into personal management of recurrence in PDAC patients after surgery.

Seed Coat Pattern QTL and Development in Cowpea (Vigna unguiculata [L.] Walp.)

The appearance of the seed is an important aspect of consumer preference for cowpea (Vigna unguiculata [L.] Walp.). Seed coat pattern in cowpea has been a subject of study for over a century. This study makes use of newly available resources, including mapping populations, a reference genome and additional genome assemblies, and a high-density single nucleotide polymorphism genotyping platform, to map various seed coat pattern traits to three loci, concurrent with the Color Factor (C), Watson (W), and Holstein (H) factors identified previously. Several gene models encoding proteins involved in regulating the later stages of the flavonoid biosynthesis pathway have been identified as candidate genes, including a basic helix-loop-helix gene (Vigun07g110700) for the C locus, a WD-repeat gene (Vigun09g139900) for the W locus and an E3 ubiquitin ligase gene (Vigun10g163900) for the H locus. A model of seed coat development, consisting of six distinct stages, is described to explain some of the observed pattern phenotypes.

A Functioning Macroscopic "Rubik's Cube" Assembled via Controllable Dynamic Covalent Interactions

The dynamic behavior of a macroscopic adhered hydrogel stabilized through controllable dynamic covalent interactions is reported. These interactions, involving the cross-linked formation of a hydrogel through reaction of a diacylhydrazine precursor with a tetraformyl partner, increase as a function of time. By using a contact time of 24 h and different compounds with recognized aggregation-induced emission features (AIEgens), it proves possible to create six laminated acylhydrazone hydrogels displaying different fluorescent colors. Blocks of these hydrogels are then adhered into a structure resembling a Rubik's Cube, a trademark of Rubik's Brand Limited, (RC) and allowed to anneal for 1 h. This produces a 3 × 3 × 3 block (RC) wherein the individual fluorescent gel blocks are loosely adhered to one another. As a consequence, the 1 × 3 × 3 layers making up the RC can be rotated either horizontally or vertically to produce new patterns. Ex situ modification of the RC or application of a chemical stimulus can be used to produce new color arrangements. The present RC structure highlights how the temporal features, strong versus weak adhesion, may be exploited to create smart macroscopic structures.

Pattern of renal diseases in children attending paediatric nephrology clinic of Aminu Kano Teaching Hospital, Kano

Background

The pattern of pediatric kidney diseases varies from one region to another because of genetic, racial, and environmental differences. This study was aimed at determining the pattern of renal diseases among children presenting at the pediatric nephrology clinic of the hospital.

Subjects and Methods

It was a retrospective study of all children aged less than 15 years seen at the pediatric nephrology clinic of the hospital over a period of 30 months. The records of 244 patients seen at nephrology clinic over the period of study were retrieved and studied.

Results

There were 155 males (63.5%) and 89 females (36.5%), with a male to female ratio of 1.7:1. The ages ranged between two months and 179 months, with a mean age of 104.8 ± 46.7 months. Nephrotic syndrome was the commonest renal disease and accounted for 33.6% (n = 82) of all cases, followed by acute glomerulonephritis with 25.8% (n = 63). Acute kidney injury and chronic kidney disease follow with frequencies of 34 (13.9%) each. The commonest congenital anomaly of the kidneys was ectopic kidney with 12 cases (4.9%).

Conclusions

Our data reflects a high burden of renal diseases among children in our environment, and also reflects variations in regional patterns. The need for improvement of pediatric renal services and training of health workers in early detection and treatment of these conditions cannot be overemphasized.

Neuronal Avalanches in Input and Associative Layers of Auditory Cortex

The primary auditory cortex processes acoustic sequences for the perception of behaviorally meaningful sounds such as speech. Sound information arrives at its input layer four from where activity propagates to associative layer 2/3. It is currently not known whether there is a characteristic organization of neuronal population activity across layers and sound levels during sound processing. Here, we identify neuronal avalanches, which in theory and experiments have been shown to maximize dynamic range and optimize information transfer within and across networks, in primary auditory cortex. We used in vivo 2-photon imaging of pyramidal neurons in cortical layers L4 and L2/3 of mouse A1 to characterize the populations of neurons that were active spontaneously, i.e., in the absence of a sound stimulus, and those recruited by single-frequency tonal stimuli at different sound levels. Single-frequency sounds recruited neurons of widely ranging frequency selectivity in both layers. We defined neuronal ensembles as neurons being active within or during successive temporal windows at the temporal resolution of our imaging. For both layers, neuronal ensembles were highly variable in size during spontaneous activity as well as during sound presentation. Ensemble sizes distributed according to power laws, the hallmark of neuronal avalanches, and were similar across sound levels. Avalanches activated by sound were composed of neurons with diverse tuning preference, yet with selectivity independent of avalanche size. Our results suggest that optimization principles identified for avalanches guide population activity in L4 and L2/3 of auditory cortex during and in-between stimulus processing.

Identifying Methylation Pattern and Genes Associated with Breast Cancer Subtypes

Breast cancer is regarded worldwide as a severe human disease. Various genetic variations, including hereditary and somatic mutations, contribute to the initiation and progression of this disease. The diagnostic parameters of breast cancer are not limited to the conventional protein content and can include newly discovered genetic variants and even genetic modification patterns such as methylation and microRNA. In addition, breast cancer detection extends to detailed breast cancer stratifications to provide subtype-specific indications for further personalized treatment. One genome-wide expression–methylation quantitative trait loci analysis confirmed that different breast cancer subtypes have various methylation patterns. However, recognizing clinically applied (methylation) biomarkers is difficult due to the large number of differentially methylated genes. In this study, we attempted to re-screen a small group of functional biomarkers for the identification and distinction of different breast cancer subtypes with advanced machine learning methods. The findings may contribute to biomarker identification for different breast cancer subtypes and provide a new perspective for differential pathogenesis in breast cancer subtypes.

Colloidal Flatlands Confronted with Urge for the Third Dimension

Two-dimensional sheets are a relatively neglected form of soft matter, interesting because of their capability to deform into the third dimension with little energy cost. Here, we confront colloidal sheets with an abruptly imposed potential tending to produce strings normal to the plane. Experimentally, this is implemented first by using ultrasound-induced acoustic levitation to produce planar sheets and then by abruptly imposing AC electric fields that introduce dipolar interactions. Seeking to identify the microscopic mechanisms underlying the observed collective behavior, we find that the patterns quantified from our fast confocal experimental imaging are reproduced by our Brownian dynamics simulations. We follow the evolution of these patterns, including their structure factor, from start to final steady state, and from successful parametrization we predict simulation phases not yet observed in experiment. The transient-state evolution toward final outcome includes monocrystalline hexagonal lattice, polycrystalline body-centered tetragonal lattice with grain boundaries, interconnected rings, serpentine zigzag chains, and columns vertical to the plane, and a "fat worm" serpentine pattern. To explain the counterintuitive findings presented here, we map dependence on softness of the confining potential.

Treatment Patterns of Diabetes in Italy: A Population-Based Study

Background: The steady increase in type 2 diabetes prevalence and the availability of new antidiabetic drugs (AD) have risen the use of these drugs with a change in the patterns of specific drug utilization. The complexity of this treatment is due to successive treatment initiation, switching and addition in order to maintain glycaemic control. The aim of this study was to describe the utilization patterns of ADs at initiation, treatment addition, and switching profiles and to measure factors influencing persistence to therapy.

Methods: Retrospective observational study. Data were retrieved from the Campania Regional Database for Medication Consumption. Population consisted of patients receiving at least one prescription of ADs between January 1 and December 31, 2016. We calculated time to treatment switching or add-on as median number of days and interquartile range (IQR). Persistence rates were estimated using the Kaplan–Meier method. We used Cox regression models to estimate the likelihood of non-persistence over 1 year of follow-up. Hazard ratios and 95% confidence intervals were calculated.

Results: Of 14,679 patients, 86.9% started with monotherapy and 13.1% with combination therapy. Most common initial treatment was metformin in both monotherapy and combination therapy. First-line prescription of sulfonylurea was observed in 6.9% of patients aged 60–79 years and in 10.8% of patients aged ≥80 years. Patients starting with metformin showed fewer treatment modifications (10.4%) compared to patients initiating with sulfonylureas (35.2%). Newer ADs were utilized during treatment progression. Patients who initiated with sulfonylurea were approximately 70% more likely to discontinue treatment compared to those initiated on metformin. Oldest age group (≥80 years) was more likely to be non-persistent, and likelihood of non-persistence was highest in polymedicated patients. Patients changing therapy were more likely to be persistent.

Conclusions: Our results show that treatment of T2D in Italy is consistent with clinical guidelines. Even if newer ADs were utilized during disease progression, they seem not to be preferred in patients with a higher comorbidity score, although these patients could benefit from this kind of treatment. Our study highlights patients’ characteristics that might help identify those who would benefit from counselling from their health-care practitioner on better AD usage.

Patterns of health care use related to respiratory conditions in early life: A birth cohort study with linked administrative data

OBJECTIVES

To identify distinctive patterns of respiratory-related health services use (HSU) between birth and 3 years of age, and to examine associated symptom and risk profiles.

METHODS

This study included 729 mother and child pairs enrolled in the Toronto site of the Canadian Healthy Infant Longitudinal Development study in 2009-2012; they were linked to Ontario health administrative databases (2009-2016). A model-based cluster analysis was performed to identify distinct groups of children who followed a similar pattern of respiratory-related HSU between birth and 3 years of age, regarding hospitalization, emergency department (ED) and physician office visits for respiratory conditions and total health care costs (2016 Canadian dollars).

RESULTS

The majority (estimated cluster weight = 0.905) showed a pattern of low and stable respiratory care use (low HSU) while the remainder (weight = 0.095) showed a pattern of high use (high HSU). From 0 to 3 years of age, the low- and high-HSU groups differed in mean trajectories of total health care costs ($783 per 6 months decreased to $114, vs $1796 to $177, respectively). Compared to low-HSU, the high-HSU group was associated with a constant risk of hospitalizations, early high ED utilization and physician visits for respiratory problems. The two groups differed significantly in the timing of wheezing (late onset in low-HSU vs early in high-HSU) and future total costs (stable vs increased).

CONCLUSIONS

One in ten children had high respiratory care use in early life. Such information can help identify high-risk young children in a large population, monitor their long-term health, and inform resource allocation.

Breaking Bad: A Comparative Descriptive Analysis of Periprosthetic Fractures Around Cemented and Uncemented Femoral Stems

BACKGROUND

Periprosthetic fractures are most commonly classified according to the Vancouver classification system and more recently the Unified Classification System. The aim of this study is to provide a descriptive analysis of fracture patterns in femoral periprosthetic fractures (PPFs) by femoral stem fixation.

METHODS

A retrospective observational study of all femoral PPFs over a 10-year period at our institution was conducted. Presenting radiographs were examined to assess the fracture pattern.

RESULTS

Over the 10-year period, 138 femoral PPFs that underwent operative treatment were examined. Mean age of patients was 78 years with 45.7% male and median American Society of Anaesthesiologists grade 3. The femoral stem fixation was cemented in 83 patients and uncemented in 55 patients. Uncemented femoral stems most commonly caused a simple oblique fracture pattern (69.1%) with a more comminuted pattern seen in cemented fixation (59%).

CONCLUSION

Fracture patterns differ according to femoral stem fixation. A simple "sickle-like" oblique fracture pattern was more commonly seen in uncemented stems while cemented tapered stems resulted in a comminuted "axe splitting" pattern.

Case Series and Literature Review of Ophthalmologic Disorders Seen in a Specialist Rheumatology Clinic in Lagos, Nigeria

Purpose: To highlight the pattern and treatment outcomes of ophthalmologic disorders referred to a private specialist rheumatology clinic. Methods: Retrospective review (January 2015-December 2016) of referrals from Eye Foundation Hospital, Lagos to Arthrimed Specialist Clinic, Lagos. Case records were retrieved and relevant information extracted. Ethical standards were observed. Results: Twenty-two referrals (35 eyes) were received out of 643 patients (3.4%) seen during the study period. The majority were female (63.6%) with mean age 48.9 ± 19.3 years and bilateral disease (59%). Diagnoses included uveitis (45.5%), optic neuritis (36.4%), non-specific autoimmune eye disease (9.1%), keratoconjunctivitis sicca (4.5%), and giant cell arteritis (4.5%). Treatment was with steroids and immunosuppressive agents. Fourteen patients improved (63.6%), five remained unchanged (22.7%), while three worsened (13.6%). Conclusions: Our patients were mostly fourth-decade females with bilateral disease. Uveitis was the commonest presentation, and two-thirds of the treated patients improved after treatment. Early specialist referral and co-management of severe autoimmune eye diseases are desirable.

Radiographic evaluation and determination of hypercementosis patterns in Al-Madinah Al-Munawwarah, Saudi Arabia: A retrospective cross-sectional study

Objectives

Hypercementosis (HC) is an asymptomatic excessive cementum deposition at the dental root apex. There is a lack of research that determines the pattern and associated factors of HC in Saudi Arabia.

Materıals and Methods

A retrospective cross-sectional study was conducted on a random sample of 815 Orthopantomograms (OPGs) that was obtained from a total of 14003 female patients archived OPGs. The OPGs were retrieved from the Kodak Carestream-R4 database for the period between 2015 and 2017 at Taibah University Dental College and Hospital (TUDCH), Al-Madinah Al-Munawwarah, Saudi Arabia. Width and radiodensity of HC were measured and the distribution was calculated. Association between HC and factors including age and nationality were explored. Descriptive and inferential analyses were performed.

Results

The mean/SD age of HC affected patients (9.8%) was 30.16 ± 13.1 years, of whom 55% were Saudis. The mean/SD width and radiodensity of the hypercementosed roots were 4.14 ± 1.2 mm and 119.86 ± 29.83, respectively. The mandibular teeth were more frequently associated with hypercementosis (65%) specifically first molars (47.5%), while the majority (64%) had a single unilateral distribution pattern. There was a non-significant association between nationality, age, and HC (P = 0.921, P = 0.633, respectively).

Conclusion

Hypercementosis observed in 9.8% of female patients attending TUDCH which was primarily unilateral and prominently confined to the mandibular teeth roots. The complication of teeth extraction among female patients in Almadinah region should be anticipated.

A non-synonymous SNP in exon 3 of the KIT gene is responsible for the classic grey phenotype in alpacas (Vicugna pacos)

The alpaca classic grey phenotype is of particular interest to the industry. Until now, there were only indirect data suggesting that the KIT gene was involved in the classic grey phenotype. All exons of KIT in three black and three classic silvergrey alpacas were sequenced. Five non-synonymous SNPs were observed. There was only one SNP found that was present only in the silvergrey alpacas, and this was also the only SNP predicted to be damaging. This variant results in a change of a glycine (Gly) to an arginine (Arg) at amino acid position 126 (c.376G>A), occurring in the second Ig-like domain of the extracellular domain of KIT. Basic protein modelling predicted that this variant is likely destabilising. Therefore, an additional 488 alpacas were genotyped for this SNP using the tetra-primer amplification refractory mutation system PCR (Tetra-primer ARMS-PCR). All classic grey alpacas were observed to be heterozygous, and 99.3% of non-grey dark base colour alpacas were found to be homozygous for the wildtype allele in this position. These results confirm that the classic grey phenotype in alpacas is the result of a c.376G>A (p.Gly126Arg) SNP in exon 3 of KIT. These data also support the hypothesis that the grey phenotype is autosomal dominant and that the mutation is most likely homozygous lethal.

Macroscopic Geometry-Dominated Orientation of Symmetric Microwrinkle Patterns

Orientated wrinkle patterns with controlled microarchitectures are highly attractive because of their potential and broad application in technologies ranging from flexible electronic devices to smart windows. Here, we demonstrate a macroscopic, geometry-dominated strategy to fabricate symmetric microwrinkles with precisely controllable pattern dimensions and orientations through a dynamic interfacial release process. The release-induced approach is based on the release of multilayer elastomer composites from polymeric sacrificial layers in solutions combined with crosslinking-induced contraction of the elastomer substrates. Crosslinking-induced contraction provides the driving force for developing and stabilizing surface wrinkle formation, whereas the polymeric sacrificial layer provides a mild and simultaneous release process to form orientated wrinkles through kinetic control of local strain development. The macroscopic shape of the composite controls release kinetics, hence strain history, leading to the generation of photonic reflective surfaces. Moreover, stable wrinkles fabricated from various materials including metals, ceramics, and carbons can be achieved. This versatile, mold-free, and cost-effective platform technology demonstrates how global strain distributions can be harnessed through kinetics to drive local pattern development.

Mortality Patterns in a Commercial Wean-To Finish Swine Production System

Modern commercial pig production is a complex process that requires successful producers to understand and resolve factors associated with perturbations in production. One important perturbation is inventory loss due to mortality. In this study, data on 60 lots of approximately 2000 weaned pigs (n = 115,213) from one commercial production system were collected through the wean-to-finish (WTF) cycle with the objective of establishing patterns of mortality, estimating differences in profit/loss among patterns of mortality, and identifying production practices associated with mortality patterns. Information provided by the production system included the number of pigs in each lot at the time of placement (beginning inventory), weaning weight, barn dimensions, number of dead pigs (NDP) daily, capacity placed (proportion pigs actually placed versus what had been planned to be placed) and average weight sold. Analysis of NDP revealed three mortality patterns (clusters I, II, III) composed of 6, 40, and 14 lots, respectively, that differed in the temporal onset and/or level of mortality. Average daily gain (ADG) and feed conversion ratio (FCR) were calculated by growth phase for each cluster. An economic model showed profit differences among clusters due to poor biological performance by clusters I and III in the late finishing phase. Cluster II (n = 40) had fewer dead pigs and the highest profit compared to clusters I (n = 6) and III (n = 14). Area per pig (stocking density) was the only factor associated with the differences in mortality patterns. Routine monitoring and the analysis of mortality patterns for associations with production and management factors can help swine producers improve biological performance and improve profit.

Heart Failure in Ethiopian Children: Mirroring the Unmet Cardiac Services

Background

HeartFailure (HF) is a progressive clinical and pathophysiological syndrome caused by cardiovascular and noncardiovascular abnormalities. Childhood HF has not been well studied in Sub-Sharan Africa, particularly in Ethiopia. Hence, this study aimed at describing the pattern and outcome of pediatrics HF at a referral-teaching hospital.

Methods

Medical records of 216 HF children aged 2 months to 14 years, and admitted between January 2014 and January 2016 were reviewed. Clinical information was collected, analyzed and presented in tables and pie charts.

Results

A total of 2000 children were admitted to Hawassa University Hospital during the study period. HF accounted for 10.8% (216) of pediatrics admissions, 51.9% males. The median age of the study subjects was 6 years. Functionally, NYHA/Ross class III and IV consisted 65(30.1%) and 139(64.4%) of HF. Structural heart disease was the commonest cause of HF, 144(66.7%): Rheumatic heart disease (RHD),75(52%), and congenital heart disease (CHD),64(44.5%). Anemia and renal cases contributed to 50(23.1) and 12(5.6%) of HF.CHD was predominantly documented in <5 years. Pneumonia 66(42.9%), and infective endocarditis 29(18.8%) were the common precipitating/comorbid conditions with HF. The case fatality rate of HF was 13.9 %(30).

Conclusion

In this study, HF accounted for a tenth of pediatrics admissions. Structural heart disease was the commonest cause of heart failure. CHD and RHD affected predominantly children of <5 years of age and >5 years of age. Echocardiographic screening of HF cases for structural heart disease and optimal care for patients with underlying structural heart disease are recommended.

Pattern and Presentation of Thyro-Cardiac Disease among Patients with Hyperthyroidism Attending a Tertiary Hospital in Ethiopia: A Cross Sectional Study

Background

Thyro-cardiac disease describes the existence of a combination of thyroid toxicity and significant heart disease in an individual patient. The frequent manifestations of thyro-cardiac disease are hypertension, atrial flutter or fibrillation, pulmonary hypertension and dilated cardiomyopathy. The aim of the study was to determine the pattern and presentation of cardiovascular diseases in patients with hyperthyroidism on follow-up at St. Paul's Hospital endocrine clinic.

Methods

It was a hospital based cross sectional study that evaluated hyperthyroid patients' on follow-up at St. Paul's Hospital for cardiovascular diseases from May 1^st 2017 to October 31^st 2017. They had focused history, physical examination, electrocardiographic and echocardiographic evaluation.

Results

A total of 146 hyperthyroid patients on follow-up were included in the study. The mean age was 47.2 years and females accounted for 93.2% of patients. The mean duration of symptoms before presentation was 42 months. The frequent causes of hyperthyroidism were toxic multi-nodular goitre (88.4%), Graves' disease (6.8%) and toxic adenoma (2.1%). Sixteen (11%) patients had atrial fibrillation and 71 (48.6%) had hypertension. Thyrocardiac disease was detected in 46.6% of patients. The frequent abnormalities were left ventricular hypertrophy (14.4%), mild diastolic dysfunction (10.9%), moderate to severe mitral regurgitation (8.9%), pulmonary hypertension with or without right ventricular dysfunction (8.2%) and dilated cardiomyopathy (4.1%).

Conclusion

Cardiovascular disease was frequent among patients with hyperthyroidism. The commonest abnormalities were systemic hypertension, pulmonary hypertension with or without isolated right sided heart failure, atrial fibrillation and dilated cardiomyopathy.

Polyphenolic Nutraceuticals to Combat Oxidative Stress Through Microbiota Modulation

Due to their direct relationship with the activity of the gut microbiota, nutraceuticals are, at present, an effective alternative for the mitigation and alleviation of the dysfunctions governed by oxidative stress. The escalation in the number of the target group patients (diabetes, cardiovascular dysfunction, cancer, etc.) has spurred the quest for alternative action methods. The therapeutic value is determined through in vitro and in vivo methods, and involves the analysis of the therapeutic index. As the adverse outcomes are decreased, the pharmacological potential is assessed by the mechanisms, including biotransformation and the identification of the relevant biomarkers. Inflammatory action is among the principal effects that need to be reduced because it favors the presence of free radicals and dysbiosis. This article aimed at highlighting the action of the nutraceuticals in minimizing the oxidative stress by directly influencing the microbiota and slowing down the inflammatory progression. The pharmacological aspects as a therapeutic indicator of the use of nutraceuticals in improving the population health.

Prevalence, pattern, magnitude and associated factors of trauma in the Emergency Department at Health Institutes in Ethiopia: A systematic review

BACKGROUND

Trauma is one of the important public health problems that causes significant economic and social crisis with more than 10% of all disease cases are associated with it. We aimed to identify and describe the prevalence, patterns, magnitude and associated factors of trauma in the Emergency Department at Health Institute in Ethiopia.

METHODS

In this systematic review, we searched for peer-reviewed and grey literature publications reporting the prevalence, pattern, magnitude and associated factors of trauma between 2000 and 2019. The documents which recruited are directly related to trauma and emergency department. In this regard, we searched databases of PubMed, Elsevier, Science directed, MEDLINE, and Google scholar by using Google as searching engine. Furthermore, publication with secondary data and not in English was excluded.

FINDINGS

A total of 9,768 injured participants were included in the studies, of which 71.2% (6950) were males. Among the injured participants, 53.4% of cases were living in Addis Ababa followed by Gondar and Jimma with 20.3% and 11.3% cases, respectively. Severe road traffic accident, occupational injury, and surgical patients were among the major risk factors of trauma. The mortality rate of the trauma case fatality was reached about 4%. The majority of the studies (37.5%) analyzed the pattern and magnitude of trauma among patients seen at emergency outpatient department of health institutes in Ethiopia. The largest percentage of studies (62.5%) relied on systematic random sampling. Thirty eight percent of the reviewed studies were utilized retrospective approaches to address the research questions. An completed the registry forms and/or Kampla Trauma Score (KTS), which accounted for 37.5% of articles on prevalence, pattern, magnitude and associated factors of trauma in the emergency was the most commonly used strategy. The majority (75%) of the reviewed studies were used both descriptive statistics and bivarate and multivariate logistic regression for data analysis. The majority 6950 (71%) of the participants who have been included in those reviewed articles were male and 2818 (29%) were female by gender. Meanwhile, the majority 5 (62.5%) of reviewed studies had included < 1000 injured persons.

CONCLUSION

The degree and types of injuries in different hospitals in Ethiopia was considerably high and its casualty is also under predictable. Therefore, a variety of actions including policy decision should be implemented in order to minimize the incidence of trauma at department of emergency care center in the country.

Is the Voronoi Entropy a True Entropy? Comments on "Entropy, Shannon's Measure of Information and Boltzmann's H-Theorem", Entropy 2017, 19, 48

The goal of this comment note is to express our considerations about the recent paper by A. Ben Naim (Entropy2017, 19, 48). We strongly support the distinguishing between the Shannon measure of information and the thermodynamic entropy, suggested in the paper. We demonstrate that the Voronoi entropy should also be clearly distinguished from the entropy of a two-dimensional gas. Actually, the Voronoi entropy being an intensive value is the averaged Shannon measure of ordering for a given pattern.

Patterns of domestic violence against women during pregnancy and the postpartum period in Kathmandu, Nepal

INTRODUCTION

Domestic violence during pregnancy and the postpartum period is a public health problem, which affects not only the health of the mother but also the health of the fetus and child. This study aims to examine the prevalence and patterns of domestic violence during pregnancy and the postpartum period and to identify associated factors in a Nepalese society.

METHODS

A cross-sectional study was conducted in a government hospital of Nepal. In each trimester of pregnancy and the postpartum period, 165 women aged 15 to 49 years were recruited. Domestic violence information was elicited using a questionnaire adapted from a World Health Organization (WHO) domestic violence against women instrument. Multiple logistic regression models were used to identify associated factors of domestic violence.

RESULTS

The overall prevalence of domestic violence against women during pregnancy and the postpartum period was 26.2% (17.6%, 34.6%, 32.7%, and 20.0% in the first, second, and third trimesters of pregnancy, and the postpartum period, respectively). Associated factors for domestic violence included Janjati ethnicity of the women, 2 to 5 years of married life compared with <2 years, the second and third trimesters of pregnancy compared with the first trimester, low education status of husbands, high controlling behavior of mothers-in-law, and previous history of domestic violence.

DISCUSSION

Domestic violence during pregnancy and the postpartum period is common in Nepalese women, especially in the second and third trimesters of pregnancy.

Healing Pattern: A Natural Kind in Nursing?

This article focuses on the philosophical notion of natural kind to explore healing pattern as a relevant and natural process in nursing science and practice. A goal in doing this is to facilitate continued empirical investigation of and evidence for nursing's ontological claim about the existence of a healing pattern. I review various accounts of natural kind, with applications to nursing and the healing pattern. I conclude with directions for future inquiry to provide more definitive evidence and explanation of the healing pattern.

Differences in fetal growth patterns between twins and singletons

Objective: Twin fetus growth is delayed during the third trimester compared to singletons. Whether this phenomenon should be considered a normal physiologic characteristic of twins or a pathologic process inherent to twin pregnancies is currently unclear. Information on the growth rate of the individual fetal biometric indices may provide more insight into the mechanisms underlying these differences between twins and singletons. Our aim was to compare fetal growth pattern between twin and singleton fetuses.Methods: This was a retrospective study of women with an uncomplicated twin pregnancy who underwent sonographic fetal weight estimation between 16 and 38 weeks' gestation in a single referral center. Twins-specific regression models were generated for biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC), femur length (FL) and fetal weight as a function of gestational age and were compared to published singletons-based curves.Results: Overall 543 women were eligible for the study and underwent a total of 3401 sonographic weight estimations. Estimated weight of twin fetus emerged as lower than that of singletons starting at 26 weeks of gestation, and these differences increased with gestational age, reaching a mean difference of 300-350 g or of ∼10% at term. The growth of all four biometric indices was slower in twins compared to singletons, but the differences were most pronounced for AC which had the largest relative contribution to the lower fetal weight in twins (51.7 ± 7.3%), while the relative contribution of FL, HC, and BPD was smaller (26.4 ± 10.7, 15.5 ± 3.0, and 6.4%±5.7%, respectively). This was also reflected by a higher HC/AC ratio in twins compared with singletons starting at 22 weeks of gestation. The likelihood of a twin fetus being diagnosed as small for gestational age (fetal weight <10th percentile) was significantly lower when the newly developed twins-based curves (rather than singletons-based curves) were used (OR: 0.39, 95%-CI: 0.34-0.44).Conclusion: Twin fetus experience slowing of growth beginning at ∼26 weeks of gestation and a greater degree of asymmetric growth pattern compared with singletons. These findings suggest that the slower growth of twins may reflect a state of "relative growth restriction" compared with singleton gestations.

Fault Detection of Electric Impact Drills and Coffee Grinders Using Acoustic Signals

Increasing demand for higher safety of motors can be noticed in recent years. Developing of new fault detection techniques is related with higher safety of motors. This paper presents fault detection technique of an electric impact drill (EID), coffee grinder A (CG-A), and coffee grinder B (CG-B) using acoustic signals. The EID, CG-A, and CG-B use commutator motors. Measurement of acoustic signals of the EID, CG-A, and CG-B was carried out using a microphone. Five signals of the EID are analysed: healthy, with 15 broken rotor blades (faulty fan), with a bent spring, with a shifted brush (motor off), with a rear ball bearing fault. Four signals of the CG-A are analysed: healthy, with a heavily damaged rear sliding bearing, with a damaged shaft and heavily damaged rear sliding bearing, motor off. Three acoustic signals of the CG-B are analysed: healthy, with a light damaged rear sliding bearing, motor off. Methods such as: Root Mean Square (RMS), MSAF-17-MULTIEXPANDED-FILTER-14 are used for feature extraction. The MSAF-17-MULTIEXPANDED-FILTER-14 method is also developed and described in the paper. Classification is carried out using the Nearest Neighbour (NN) classifier. An acoustic based analysis is carried out. The results of the developed method MSAF-17-MULTIEXPANDED-FILTER-14 are very good (total efficiency of recognition of all classes—TE_D = 96%, TE_CG-A = 97%, TE_CG-B = 100%).

Analysis of Mandibular Fractures: A 7-year Retrospective Study

Background:

Mandibular fractures contribute to a substantial proportion worldwide. Various variables related to mandibular fractures such as demographics, etiology, pattern of fracture, and treatment have been studied, but fewer reports on their correlations are published. Hence, this study attempts to understand these factors which can be useful for setting up clinical and research priorities.

Aim:

The purpose of this retrospective study is to establish a correlation between different factors associated with mandibular fractures.

Materials and Methods:

A database of 277 patients between July 2011 and October 2018 with mandibular fractures was retrospectively retrieved. Information on age, gender, etiology, pattern of fracture, and treatment done was obtained, tabulated, and analyzed statistically. Entities such as age and gender, age and cause, gender and cause, site of fracture and cause, site of fracture and side, site of fracture and treatment done, and site of fracture and gender were correlated.

Statistical Analysis Used:

Descriptive and analytical statistics were calculated using the SPSS version 20 using Chi-square tests which include Pearson's Chi-square and likelihood ratio.

Results:

In a total of 277 patients, a statistically significant correlation was found between age and the etiologic agent, site and side of fracture, and site of fracture and the treatment done with value of P < 0.05.

Conclusion:

A definite correlation between multitude of overlooked relevant co-factors has been studied which can provide an operating surgeon, a valuable impetus to be more vigilant in terms of medicolegal record maintenance, diagnosis, and possible clinical strategy for the treatment of mandibular fractures.

Two Antagonistic Hippo Signaling Circuits Set the Division Plane at the Medial Position in the Ciliate Tetrahymena

In a single cell, ciliates maintain a complex pattern of cortical organelles that are arranged along the anteroposterior and circumferential axes. The underlying molecular mechanisms of intracellular pattern formation in ciliates are largely unknown. Ciliates divide by tandem duplication, a process that remodels the parental cell into two daughters aligned head-to-tail. In the elo1-1 mutant of Tetrahymena thermophila, the segmentation boundary/division plane forms too close to the posterior end of the parental cell, producing a large anterior and a small posterior daughter cell, respectively. We show that ELO1 encodes a Lats/NDR kinase that marks the posterior segment of the cell cortex, where the division plane does not form in the wild-type. Elo1 acts independently of CdaI, a Hippo/Mst kinase that marks the anterior half of the parental cell, and whose loss shifts the division plane anteriorly. We propose that, in Tetrahymena, two antagonistic Hippo circuits focus the segmentation boundary/division plane at the equatorial position, by excluding divisional morphogenesis from the cortical areas that are too close to cell ends.

Multimorbidity among elderly in Bangladesh

BACKGROUND

Multimorbidity among the elderly is a major public health problem in most of the developing countries, including Bangladesh, where the population is moving towards aging. Multimorbidity was defined as the co-occurrence of at least two chronic diseases in a person whether as a coincidence or not. Little attention has been paid to the study of the prevalence of multimorbidity among the elderly in Bangladesh.

OBJECTIVE

The objectives of this study were to estimate the prevalence of multimorbidity among hospitalized elderly.

METHODS

A cross-sectional study was conducted in two tertiary level hospitals with a sample of 566 adults aged 60 years or more. Data were collected from medical examination reports at the hospital and using a semi-structured interview schedule through an in-person interview. Descriptive statistics were used to measure the prevalence of multimorbidity.

RESULTS

The overall prevalence of multimorbidity among the elderly was 56.4% and the prevalence was higher among females (64.18%) than males (54.17%). The most prevalent conditions were hypertension (33.0%), diabetes (27.6%), ischemic heart disease (12.0%), and chronic obstructive pulmonary disease (9%).

CONCLUSION

A high prevalence of multimorbidity suggests that there is an urgent need to develop geriatric health-care services. Policymakers should pay attention to developing effective intervention strategies and programs to reduce the burden of multimorbidity.

Spatiotemporal Control of Growth Factors in Three-Dimensional Printed Scaffolds

Three-dimensional printing (3DP) has enabled the fabrication of tissue engineering scaffolds that recapitulate the physical, architectural, and biochemical cues of native tissue matrix more effectively than ever before. One key component of biomimetic scaffold fabrication is the patterning of growth factors, whose spatial distribution and temporal release profile should ideally match that seen in native tissue development. Tissue engineers have made significant progress in improving the degree of spatiotemporal control over which growth factors are presented within 3DP scaffolds. However, significant limitations remain in terms in pattern resolution, the fabrication of true gradients, temporal control of growth factor release, the maintenance of growth factor distributions against diffusion, and more. This review summarizes several key areas for advancement of the field in terms of improving spatiotemporal control over growth factor presentation, and additionally highlights several major tissues of interest that have been targeted by 3DP growth factor patterning strategies.

Location-Based Lattice Mobility Model for Wireless Sensor Networks

Significant research has been conducted for maintaining a high standard of communication and good coverage in wireless sensor networks (WSNs), but extra power consumption and mobility issues are not yet fully resolved. This paper introduces a memory-less location mobility-aware Lattice Mobility Model (LMM) for WSNs. LMM is capable of concurrently determining the node and sink mobility. LMM has a lower pause time, fewer control packets, and less node dependency (e.g., the energy consumed by each node in each cycle that is independent of the data traffic). LMM accurately determines a node’s moving location, the distance from its previous location to its current location, and the distance from its existing location to its destination. Many existing mobility models only provide a model how nodes move (e.g., to mimic pedestrian behavior), but do not actually control the next position based on properties of the underlying network topology. To determine the strength of LMM, OMNet++ was used to generate the realistic scenario to safeguard the affected area. The operation in affected area comprises searching for, detecting, and saving survivors. Currently, this process involves a time-consuming, manual search of the disaster area. This contribution aims to identify an energy efficient mobility model for a walking pattern in this particular scenario. LMM outperforms other mobility models, including the geographic-based circular mobility model (CMM), the random waypoint mobility model (RWMM) and the wind mobility model (WMM), The simulation results also demonstrate that the LMM requires the least time to change the location, has a lower drop rate, and has more residual energy savings than do the WMM, RWMM, and CMM.

Pattern of blood donation and characteristics of blood donors in Enugu, Southeast Nigeria

Background

Despite increasing need for blood donation in medical practice, little is known about pattern of blood donation and characteristics of blood donors in some African populations like Nigeria. This information is necessary in designing strategies and policies for improving blood transfusion services in Africa.

Aim

The aim of this study is to determine the pattern of blood donation and characteristics of blood donors in Enugu, Southeast, Nigeria.

Materials and Methods

A cross-sectional study of 3377 blood donors at a tertiary hospital in Enugu, Nigeria from May 1, 2016 to April 30, 2017. Information sought included donors' sociodemographic characteristics; type of blood donor: Voluntary nonremunerated donor (VNRD), family replacement donor (FRD), or paid donor (PD); willingness to become VNRD in the future after counseling and education (at point of entry to blood bank) on its benefits to clinical practice; hemoglobin (Hb) level; and transfusion transmissible infections (TTIs).

Results

Mean age of blood donors was 28.8 ± 8.5 years, majority were male (3011, 89.2%) and students (1289, 32.8%). FRDs were the highest in number (1998, 59.2%), followed by PDs (746, 22.1%) and finally VNRDs (633, 18.7%). Of the 3377 persons that came for blood donation, 2537 (75.1%) were found eligible to donate while 840 (24.9%) were deferred on account of low Hb (602/3377, 17.8%) or positive infectious screening test (238/3377, 7.0%). The odds of a male donor being a VNRD were about one and half times that of a female donor (582/3011 [19.3%] vs. 51/366 [13.9%]; odds ratio: 1.48; 95% confidence interval: 1.09-2.02; P = 0.01). After counseling of FRDs and PDs, majority (54.3%) were willing to become VNRDs in the future. Donors' age >30 years, being of male sex, having tertiary level of education, and being employed were strongly associated with willingness to become VNRDs in the future (P < 0.001).

Conclusion

VNRD made up <20% of the total number of donors in Enugu, Nigeria. There is a need for improvement in public enlightenment on the need for VNRDs and employment opportunities of the populace to improve voluntary blood donation.

The distribution and pattern of neurological disease in a neurology clinic in Ile-Ife, Nigeria

Background

Neurological disorders are common and contribute significantly to disease burden, disability-adjusted life years and death.

Objective

To assess the distribution of neurological disease in patients presenting to our hospital.

Methods

The records of the Adult Neurology Clinic in Obafemi Awolowo University Teaching Hospitals Complex, Ile-Ife, Osun state, Nigeria were reviewed retrospectively for the years 2003-2005 and 2010-2014, and diagnoses as made by the Consultant were obtained and analyzed.

Results

The total number of complaints was 1,524 and 86.4% of these were neurological in nature. Episodic and paroxysmal disorders (ICD-10) accounted for 54.1% of the diagnoses, and epilepsy and stroke were the most common of these. Of the 1,226 patients seen during the period, 91.4% had neurological disorders. The peak occurrence of these disorders was within the first three decades of life.

Conclusion

Epilepsy and stroke are the commonest neurological disorders in the outpatient setting and there should be more studies in the community on their prevalence and impact.

Trends, patterns and causes of respiratory disease mortality among inpatients in Tanzania, 2006-2015

OBJECTIVE

To determine the causes, patterns and trends of respiratory diseases-related deaths in hospitals of Tanzania 2006-2015.

METHODS

Retrospective study involving 39 hospitals. Medical records of patients who died in hospital were retrieved, reviewed and analysed. Sources of data were hospital admission registers, death registers and International Classification of Diseases report forms. Information on demographic characteristics, date of death, the immediate underlying cause of death and co-morbid conditions was collected.

RESULTS

Of the 247 976 deaths reported during the 10-year period, respiratory diseases accounted for 12.92% (n = 32 042). The majority of the respiratory mortality was reported among males (55.9%). Overall median age at death was 31 years with an interquartile range (IQR) of 1-47. Median age at death was significantly higher among males (35 years) than females (28 years) (P < 0.0001). Most deaths (37.8%) occurred in eastern Tanzania. About one-third (31.3%) of all respiratory mortality was reported among under-five children, being among girls than boys (34.3% vs. 28.9%, χ²  = 10.3, P < 0.0001). Adolescent and young adult females (15-29 years) had higher age-standardised mortality rates per 100 000 due respiratory diseases than males. Pneumonia (n = 16 639; 51.9%) and pulmonary tuberculosis (n = 9687; 30.2%) accounted for the majority of deaths due to respiratory diseases. Significantly more females (n = 7665; 54.5%) than males died from pneumonia (n = 8878; 49.8%; χ²  = 8.5, P < 0.0001). By contrast, significantly more males (n = 6024; 34%) than females (n = 3596; 26%; χ²  = 15.5, P < 0.0001) died of tuberculosis. The proportion of death due to tuberculosis declined from 32.8% in 2006-2010 to 7.9% in 2011-2015. However, there was a significant increase in the proportion of death due to pneumonia from 49.6% in 2006-2010 to 53.4% in 2011-2015. Co-morbid conditions contributed to 9.1% (2871/31 628) of all deaths due to respiratory diseases. The most common co-morbid condition was HIV which accounted for 1735 (60.4%) deaths and was more common among males (60.8%; n = 957) than among females (59.7%; n = 764).

CONCLUSIONS

Respiratory diseases account for a substantial proportion of all causes of hospital death in Tanzania. Pneumonia and tuberculosis contribute to more than three quarters of all deaths due to respiratory diseases. Since most major respiratory illnesses are avoidable, it is important to strengthen the capacity of the health delivery system in managing cases of respiratory diseases.

Epidemiology of injuries seen in a nigerian tertiary hospital

Background:

The study aimed to describe the pattern of injuries among patients presenting at a tertiary care hospital in Enugu southeast Nigeria.

Patients and Methods:

A retrospective review of records of all injured patients seen in our hospital over a 12–month period was done.

Results:

A total of 789 patients had complete medical records and were included in the study. Road traffic accident (RTA) was the most common cause of injury. Lacerations/abrasions, fractures, and traumatic brain injury (TBI) were the most frequently seen injuries. The injury severity score (ISS) of the patients ranged from 1 to 50 with a mean score of 8.9 ± 3.5. RTAs were responsible for 90.8% of patients with ISS >15. Patients with ISS >15 contributed to 64.1% of all deaths. The mortality rate was 4.5%. Most deaths resulted from RTA and were associated with TBI (P = 0.001).

Conclusion:

Lacerations and fractures were the most common injuries. RTA was the leading cause of injury. TBI was the most common cause of injury–related death.

The pattern and distribution of cancers in Akwa Ibom State, Nigeria

Introduction

The pattern of cancer is known to vary by location based on people's lifestyle and socioeconomic development status. Aim: The aim of this study is to describe the pattern of cancers seen in University of Uyo Teaching Hospital.

Materials and Methods

This is a retrospective study of all cancer cases that were histologically diagnosed in the Histopathology Department of University of Uyo Teaching Hospital for 9 years (January 2007-December 2015).

Results

There were 1186 cases, identified and included in this study. Females accounted for 59.7% of cases while males accounted for 40.3% of cases, with the mean ages for females and males being 45.69 ± 14.38 and 59.63 ± 17.77 years, respectively. Age group 60-69 years accounted for most cases (20.4%). The common cancers in both sexes were breast (33%), prostate (25.8%), cervix (11.1%), skin (4.9%), sarcoma (4.8%), and colorectal (3.8%).

Conclusion

There is a variation between the pattern of cancer in Akwa Ibom and other regions of Nigeria warranting further clinicopathological evaluation, and these results will be useful in the overall context of planning and evaluation of cancer control activities in Akwa Ibom State. A population-based cancer registration in Uyo is suggested.

Clinical Pattern of Surgical Crohn Disease Patients

Backround/Objective: The aim of investigation was to evaluate if there is a pattern regarding the anatomical location of the disease and type of surgery performed/surgical indication. Also a analysis was performed regarding the complication rate in two subgroups deriving from urban and rural environments. Methods: Data was obtained from the medical records of patients with CD and centralized. Tests of statistical analysis included the CHY-SQUARE test and the results were presented as a retrospective, longitudinal study. Results: The group was formed of 60 patients. Patients with ileocolic disease were frequently diagnosed with obstruction and benefited from an enterectomy with anastomosis. Patients with colonic disease were frequently diagnosed with perforation and benefited from colectomy and stomy. Patients from rural areas had a milder evolution when compared with patients from urban enviroments. Conclusions: Although most patients with CD eventually require surgery, the indication could be anticipated by recognition of the concept of clinical patterns, and type of surgery required could be predicted if the clinical aspect of the patient/disease were identified.

Pattern of and clinicopathologic risk factors for lateral lymph node metastases in papillary thyroid carcinoma patients with lateral cervical lymphadenopathy

The surgical extension of lateral neck dissection (LND) in papillary thyroid carcinoma (PTC) with clinical lateral lymph node metastases (LLNM) remains controversial. The aim of this study was to explore the pattern of and clinicopathologic risk factors for LLNM in PTC with clinical unilateral LND to determine the rational extent of therapeutic LND.This retrospective study reviewed the records of 246 consecutive patients with PTC who simultaneously underwent total thyroidectomy, bilateral central lymph node dissection, and unilateral therapeutic LND. The frequency and pattern of LLNM were analyzed.Grossly, LLNM were present in 80.9% of patients, and level II to V lymph node metastases (LNM) were present in 45.9%, 62.6%, 56.1%, and 11.8% patients, respectively. Superior tumor location, extrathyroidal extension, and ipsilateral, contralateral, and bilateral central LNM (CLNM) were independent risk factors for gross LLNM. Age ≥45 years, superior lobe tumors, extrathyroidal extension, and ipsilateral and contralateral CLNM were independent risk factors for level II LNM. Age ≥45 years, superior and middle lobe tumors, extrathyroidal extension, and ipsilateral CLNM were independent risk factors for level III LNM. Superior lobe tumors and ipsilateral, contralateral, and bilateral CLNM were independent risk factors for level IV LNM. Only contralateral CLNM was an independent risk factor for level V LNM.In PTC patients with clinical LLNM, the predominant sites of LLNM were levels II to IV and not level V. Therapeutic elective LND should include the lateral nodal levels associated with independent risk factors, especially superior tumors location and CLNM.

Pattern and outcome of prenatally diagnosed major congenital anomalies at a Nigerian Tertiary Hospital

Introduction

The prevalence of major congenital anomalies (CAs) shows wide variations depending on geographical location and may range from <1% to 8% and it causes between 20% and 30% of perinatal deaths. In Nigeria, the prevalence of CAs may be underestimated with the general reliance on mostly livebirths ranging between 0.5% and 2.8% exempting cases of miscarriage and abortions. The purpose of this study was to determine the epidemiologic pattern and outcome of major CAs detected prenatally at the University College Hospital, Ibadan, Nigeria, over a 4-year period.

Methods

This hospital-based descriptive study highlights the prevalence and pattern of prenatally diagnosed fetal anomalies among the pregnant women who presented for routine prenatal ultrasound screening within the study period. Demographic details, associated risk factors, and fetal anomaly type in the fetuses were recorded using a prepared pro forma and were analyzed.

Results

Prenatal ultrasound screening for fetal anomalies was performed on 989 fetuses (including 15 sets of twins and 1 set of triplets) during the study period, out of which 62 (6.3%) had CAs. Of the 62 with CAs, 37 (59.7%) were major and 25 (40.3%) were minor. Majority of the fetuses with major anomalies were found among women aged 30-34 years and most were detected during the routine 18-22 weeks' anomaly scan. The major anomalies were most common in central nervous system. Nine (14.5%) pregnancies were terminated before term and 8 (29.6%) babies had different postnatal surgical interventions. Eleven (17.7%) of the fetuses with anomalies died in the perinatal period.

Conclusion

CAs remain a major contributor to perinatal morbidity and mortality in Nigeria. Since most are idiopathic, early prenatal detection with ultrasound may facilitate improved diagnosis and the reduction of overall perinatal morbidity and mortality in the Nigerian setting.

Effectiveness of implementation of "mental health nursing students' clinical competency model" on academic performance of nursing students

Background: Clinical nursing competence in mental health is one of the most important topics in theoretical and practical nursing training with many factors affecting it. The purpose of this study is to determine the impact of the implementation of the "mental health nursing students' clinical competence model" on nursing students' academic performance. Methods: This study is a semi experimental following one group of student nurses. "mental health nursing students' clinical competence model" for undergraduate nursing student's education was applied. The study population included 50 nursing students, who were studying from fifth semester to seventh semester and selected through census sampling. During the seventh semester after the completion of theoretical and practical courses in mental health nursing, re-evaluation was conducted and the scores before and after the implementation of the clinical competence model were compared. Results: Rate of clinical competency before the intervention, was estimated at the level of non-mastered; and after intervention was at the level of mastered, demonstrating a significant difference (p<0.001). Areas of clinical competency scores before and after the intervention were compared which showed significant difference in all the areas except the mental competency areas (p<0.05). Conclusions: The implementation of the "mental health nursing students' clinical competence model" and appropriate planning for achievement of mental health nursing specialized competency can ensure the achievement of clinical competency by nursing students.