scholarly journals The identification of an anti-thrombin molecule via the screening of semi-random DNA libraries

2018 ◽  
Author(s):  
Fan Feng ◽  
Zijin Li ◽  
Zhenlang Chen ◽  
Le Wang ◽  
Jie Huang ◽  
...  
Keyword(s):  
Culture Supernatant ◽  
Culture Media ◽  
Stop Codon ◽  
Positive Clone ◽  
Serine Residue ◽  
Mortality And Morbidity ◽  
Low Concentrations ◽  
Dna Libraries ◽  
Key Enzyme ◽  
Causes Of Mortality

AbstractThrombosis remains one of the leading causes of mortality and morbidity in the world. Thrombin is a key enzyme involved in the blood clotting processes, which can be intervened by low concentrations of Hirudin. The C-terminal dodecapeptide of Hirudin was capable of inhibiting thrombosis. This peptide has been partially randomized in this report, and the coding sequences have been expressed in yeast as chimerical peptides for secretion into the culture media. Two other semi-random modules have been processed likewise. The supernatant was subsequently tested for anti-thrombin activities. DNA sequencing indicated that the putative positive clone encoded a single serine residue followed by a stop codon. The Ninhydrin assay of the culture supernatant of the positive clone indicated a high content of amino acid. Electrospray Mass Spectrometry showed a distinct peak at 430.5 when the expression products from Pichia pastoris were examined, suggesting that the compound may be a dimannosylated serine, as yeast possesses glycosylation at serine residues. The observed effects of α-Mannosidase treatments on the function of yeast induction products are consistent with this assumption. Partial randomization of peptides and proteins may accelerate directed evolution, yielding unprecedented number of variants for functional interrogation and drug development.

Chitosan-Based Hydrogel Nanoparticles for Cancer Therapy

2017 ◽  
Vol 7 (04) ◽  
Author(s):  
Azadi A. ◽  
Khazaei M. ◽  
Ashrafi H.
Keyword(s):  
Drug Delivery ◽  
Cancer Therapy ◽  
Recent Decade ◽  
Reticuloendothelial System ◽  
Malignant Neoplasms ◽  
Mortality And Morbidity ◽  
Hydrogel Nanoparticles ◽  
Tissue Invasion ◽  
Causes Of Mortality ◽  
Nanoparticulate Systems

Cancer, an uncontrollable growth of cells, is among the leading causes of mortality and morbidity throughout the world. Malignant neoplasms are difficult to treat diseases because of their single in kind characteristics such as tissue invasion, metastasis, evading reticuloendothelial system (RES) and so forth. In recent decade polymeric nanoparticulate systems has gained special attention in drug delivery and targeting among all biocompatible nanoforms. Among these systems, chitosan-based hydrogel nanoparticles have been wildly utilized for drug delivery purposes. The usage of chitosan nanogels in cancer therapy significantly improved in recent years. The various cancers were the target of chitosan nanogels. Also, modification of other delivery systems with chitosan were much reported. The aim of this study is the review and update of the recent studies on chitosan nanogels applications in cancer therapy by focus on cancer based classification.

scholarly journals Are Lipids Possible Markers of Suicide Behaviors?

2021 ◽  
Vol 10 (2) ◽  
pp. 333
Author(s):  
Agnieszka Kułak-Bejda ◽  
Grzegorz Bejda ◽  
Magdalena Lech ◽  
Napoleon Waszkiewicz
Keyword(s):  
Suicide Risk ◽  
Biological Marker ◽  
Low Density Lipoproteins ◽  
Low Density ◽  
Lipid Levels ◽  
Mortality And Morbidity ◽  
Additional Tool ◽  
Cholesterol Levels ◽  
Causes Of Mortality ◽  
Suicide Behaviors

Suicides and suicidal behaviors are very important causes of mortality and morbidity and have become a serious global problem. More than 800,000 people die from suicide every year. Previous researches have established that lipids play an important role in the pathogenesis of suicide. Moreover, lipid levels might be a biological marker of suicide. A lot of researchers have tried to identify biological markers that might be related to depressive disorder, bipolar disorder or schizophrenia and suicidal behavior. It was also important to consider the usefulness of an additional tool for prevention actions. Metabolic deregulation, particularly low total cholesterol and low-density lipoproteins-cholesterol levels may cause higher suicide risk in patients with these psychiatric disorders.

scholarly journals Characterization of adenosine deaminase (ADA) in Hemolymph of Biomphalaria glabrata

2005 ◽  
Vol 65 (2) ◽  
pp. 371-376 ◽  
Author(s):  
M. R. Vale ◽  
R. V. Pereira ◽  
S. M. Almeida ◽  
Y. M. Almeida ◽  
S. F. L. C. Nunes
Keyword(s):  
Adenosine Deaminase ◽  
Incubation Temperature ◽  
Small Variation ◽  
Healthy Human ◽  
Ph Variation ◽  
Cellular Events ◽  
Low Concentrations ◽  
Key Enzyme ◽  
Assay Conditions

Adenosine is an important signaling molecule for many cellular events. Adenosine deaminase (ADA) is a key enzyme for the control of extra- and intra-cellular levels of adenosine. Activity of ADA was detected in hemolymph of B. glabrata and its optimum assay conditions were determined experimentally. The pH variation from 6.2 to 7.8 caused no significant change in ADA activity. Using adenosine as a substrate, the apparent Km at pH 6.8 was 734 µmols.L-1. Highest activity was found at 37ºC. Standard assay conditions were established as being 15 minutes of incubation time, 0.4 µL of pure hemolymph per assay, pH 6.8, and 37ºC. This enzyme showed activities of 834 ± 67 µmol.min-1.L-1 (25ºC) and 2029 ± 74 µmol.min-1.L-1 (37ºC), exceeding those in healthy human serum by 40 and 100 times, respectively. Higher incubation temperature caused a decrease in activity of 20% at 43ºC or 70% at 50ºC for 15 minutes. The ADA lost from 26 to 78% of its activity when hemolymph was pre-incubated at 50ºC for 2 or 15 minutes, respectively. Since the ADA from hemolymph presented high levels, it can be concluded that in healthy and fed animals, adenosine is maintained at low concentrations. In addition, the small variation in activity over the 6.2 to 7.8 range of pH suggests that adenosine is maintained at low levels in hemolymph even under adverse conditions, in which the pH is altered.

scholarly journals Cardiovascular and Neurological Complications Associated with Atrial Fibrillation

2017 ◽  
pp. 164-72
Author(s):  
Raymond Pranata ◽  
Hadrian Deka ◽  
Bambang Budi Siswanto
Keyword(s):  
Atrial Fibrillation ◽  
Cognitive Decline ◽  
Cardiovascular Mortality ◽  
Neurological Complications ◽  
Mortality And Morbidity ◽  
Major Cardiovascular Events ◽  
Bidirectional Association ◽  
Causes Of Mortality ◽  
Artery Disease ◽  
And Control

Atrial fibrillation (FA) is the most common type of sustained-arrhythmia and one of the leading causes of mortality and morbidity globally, with estimated five million incidents. FA was associated with increased all-cause mortality (RR 1.46), cardiovascular mortality (RR 2.03), major cardiovascular events (RR 1.96), stroke (RR 2.42), ischemic stroke (RR 2.33), dementia (HR 1.42) and cognitive decline, ischemic heart disease (RR 1.61), sudden cardiac death (RR 1.88), heart failure (RR 4.99), chronic kidney disease (RR 1.64), and peripheral artery disease (RR 1.31). Overall, all-cause and cardiovascular mortality increased. Cognitive decline and dementia are also a concern since they impair function and quality of life. Overall, FA has bidirectional association with other cardiovascular diseases hence it acts as a marker for them. Therefore, prevention and control of risk factors are of utmost importance.

scholarly journals Clinical Profile and Outcome of Neonates Admitted to Neonatal Intensive Care Unit of NGMC

2017 ◽  
Vol 15 (1) ◽  
pp. 20-22
Author(s):  
Roma KM ◽  
Manita Pyakurel ◽  
Veena Gupta ◽  
Piush Kanodia
Keyword(s):  
Neonatal Sepsis ◽  
Neonatal Intensive Care ◽  
Neonatal Period ◽  
Study Data ◽  
Clinical Profile ◽  
Mortality And Morbidity ◽  
Medical Practitioners ◽  
Common Causes ◽  
Causes Of Mortality ◽  
The Common

Background: Neonatal period is a period from birth to under 28 days of life. The common causes of mortality and morbidity in our region are preventable, among which neonatal sepsis is the commonest one. Most of the deaths occur within 7 days of life. Objectives: To study the clinical profile, pattern of diseases, causes of morbidity and mortality amongst newborns. Materials and methods: A hospital based descriptive study was done among total 967 newborns including both inborn and out born admitted in NICU, NGMC from January 2016 to December 2016. Age, sex, gestational age, diagnosis at admission, outcome of admitted th newborns were the main variables under study. Data was entered in Excel and analyzed using SPSS 20th version. Data were presented through pie, bar graph and table with frequency and percentage. Results: Male were predominant in the study (65%). One third of the admitted newborns were preterms. Half of the admitted newborns were admitted on their first day of life. Neonatal sepsis was the most common cause of admission. Deaths occured in 7.4%of total babies. Seventy-six percent got improved after treatment. Only 2.8% were referred to higher center. Conclusions: Most of the neonates got admitted in first day of life with commonest cause being neonatal sepsis. Recovery rate was satisfactory. To reduce the mortality and morbidity of neonates, we need to increase awareness level in general population and proper aseptic practices in medical practitioners.

scholarly journals Frequency of HIV in Obstructive Lung Disease Patients

2018 ◽  
Vol 2 (2) ◽  
pp. 18-25
Author(s):  
Waqas Ahmed ◽  
Qudrat Ullah ◽  
Mughees Ahmed ◽  
Asif Hanif
Keyword(s):  
Lung Disease ◽  
Sample Size ◽  
Obstructive Lung Disease ◽  
Low Frequency ◽  
Smooth Muscle Contraction ◽  
Hiv Positive ◽  
Mortality And Morbidity ◽  
Causes Of Mortality ◽  
Low Prevalence ◽  
Very High

AbstractBackground: Obstructive lung disease (OLD) is one of the main causes of mortality and morbidity worldwide. Obstructive lung disease is the narrowing of bronchioles mainly due to excessive smooth muscle contraction. The objective of this study is to evaluate the Frequency of HIV in obstructive lung disease patients.Methodology: Samples were collected randomly, and study was completed in almost six months. 100 samples were taken with an informed consent taken from all the patients. EDTA and Clotted blood was collected for HIV ELISA and HIV screening.Results: In this study, 69% Males and 31%Females, 34% Smokers, 26% patients were Hypertensive, 10% patients were diabetic, 3% patients were diagnosed HIV positive by screening and ELISA.Conclusion: The frequency of HIV in obstructive lung disease patients in this research is not very high as compared to the previous researches, showing high frequency and relationship between HIV and obstructive lung disease patients. The reason behind low frequency is due to low sample size so by increasing the sample size we can get better understanding of frequency of HIV in obstructive lung disease patients. Another reason of insignificant results is low prevalence of HIV in Pakistan as compared to the previous researches in certain countries. 

scholarly journals Introducing EVTM In Turkey

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Emre Özlüer ◽  
Mücahit Avcil
Keyword(s):  
Trauma Patients ◽  
Mortality And Morbidity ◽  
New Era ◽  
Bleeding Management ◽  
Life Saving ◽  
Causes Of Mortality

Trauma is one of the leading causes of mortality and morbidity worldwide. With the introduction of Endovascular Trauma and Bleeding Management (EVTM) methods, a new era has begun in the management of trauma patients. However, these life-saving methods are relatively underrecognized in Turkey. In this manuscript, we would like to describe our work so far about introducing EVTM and REBOA in our country.

scholarly journals Low concentrations of commercial alcohol hand rubs facilitate growth of and secretion of extracellular proteins by multidrug-resistant strains of Acinetobacter baumannii

2007 ◽  
Vol 56 (12) ◽  
pp. 1595-1599 ◽  
Author(s):  
Justin Edwards ◽  
Geeta Patel ◽  
David W. Wareham
Keyword(s):  
Acinetobacter Baumannii ◽  
Culture Supernatant ◽  
Multidrug Resistant ◽  
Extracellular Proteins ◽  
Nosocomial Pathogen ◽  
Emulsifying Activity ◽  
Health Care Settings ◽  
Low Concentrations ◽  
Resistant Strains ◽  
Minimal Media

Acinetobacter baumannii is increasingly recognized as an important multidrug-resistant nosocomial pathogen. Recent work has highlighted enhanced growth and heightened virulence in the presence of ethyl alcohols. As alcohol-based hand rubs (ABHRs) are extensively used in health care settings, the authors set out to determine whether the hand rubs could also influence the growth of prevalent multidrug-resistant strains circulating in UK hospitals. A significant increase in growth was observed when minimal media were supplemented with concentrations of 1 % and lower of four commercially available hand rubs. In addition, growth in ABHR-supplemented media resulted in secretion of proteins into the culture supernatant. One of these was identified as OmpA, which is recognized as having emulsifying activity, which could potentially confer enhanced pathogenicity to A. baumannii.

scholarly journals Mechanisms of LPS-Induced Acute Kidney Injury in Neonatal and Adult Rats

Antioxidants ◽  
2018 ◽  
Vol 7 (8) ◽  
pp. 105 ◽  
Author(s):  
Egor Plotnikov ◽  
Anna Brezgunova ◽  
Irina Pevzner ◽  
Ljubava Zorova ◽  
Vasily Manskikh ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Acute Kidney Injury ◽  
Smooth Muscle Actin ◽  
Accelerated Aging ◽  
Kidney Injury ◽  
Nuclear Antigen ◽  
Kidney Cells ◽  
Adult Rats ◽  
Mortality And Morbidity ◽  
Causes Of Mortality

Neonatal sepsis is one of the major causes of mortality and morbidity in newborns, greatly associated with severe acute kidney injury (AKI) and failure. Handling of newborns with kidney damage can be significantly different compared to adults, and it is necessary to consider the individuality of an organism’s response to systemic inflammation. In this study, we used lipopolysaccharide (LPS)-mediated acute kidney injury model to study mechanisms of kidney cells damage in neonatal and adult rats. We found LPS-associated oxidative stress was more severe in adults compared to neonates, as judged by levels of carbonylated proteins and products of lipids peroxidation. In both models, LPS-mediated septic simulation caused apoptosis of kidney cells, albeit to a different degree. Elevated levels of proliferating cell nuclear antigen (PCNA) in the kidney dropped after LPS administration in neonates but increased in adults. Renal fibrosis, as estimated by smooth muscle actin levels, was significantly higher in adult kidneys, whereas these changes were less profound in LPS-treated neonatal kidneys. We concluded that in LPS-mediated AKI model, renal cells of neonatal rats were more tolerant to oxidative stress and suffered less from long-term pathological consequences, such as fibrosis. In addition, we assume that by some features LPS administration simulates the conditions of accelerated aging.

IMPACT OF COGNITIVE DYSFUNCTION AND ROLE OF PHYSICAL EXERCISES TO ENHANCE COGNITIVE FUNCTIONS AMONG SUBJECTS WITH TYPE 2 DIABETES MELLITUS

2021 ◽  
pp. 47-48
Author(s):  
Manju Unnikrishnan ◽  
Titto Cherian
Keyword(s):  
Type 2 Diabetes ◽  
Cognitive Impairment ◽  
Cognitive Ability ◽  
Physical Performance ◽  
Cognitive Functions ◽  
Mortality And Morbidity ◽  
Causes Of Mortality

Diabetes has become a widespread epidemic, characterized by hyperglycemia resulting from an error in insulin secretion, insulin action, or both, and is one of the leading causes of mortality and morbidity worldwide. Studies reveal that diabetes is linked to long-term complications in the brain, which appear in the form of impaired cognitive ability compared to people without diabetes( Van Duinkerken et al 2020). Reduced physical performance is one of the most important problems faced by patients which has a direct relationship with an individual's cognitive ability. The study aims to analyse the direct and positive relationship between physical exercise and cognitive functions among people with type 2 diabetes, so this must be veried along with gaining a comprehensive understanding of cognitive impairment in diabetes and its effect on physical performance. vice versa. This study is based on the reviewed research results of various researchers. In this study, the term "cognitive impairment" in relation to diabetes refers to any deviation in cognitive performance compared to people without diabetes.

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