Correlation of Anemia with Glycated Hemoglobin among Euglycemic Type 2 Diabetic Patients.

BACKGROUND: Diabetes mellitus (DM) and anemia are both prevalent in India. Glycated hemoglobin (HbA1c) is the gold standard test for the diagnosis of DM and monitoring of glycemic status. Hemoglobin (Hb) being the integral component of HbA1c, there is a possibility that anemia can also affect the level of HbA1c apart from the various other factorsObjectives: To study the prevalence, type of anemia, and correlation between HbA1c and anemia, including red blood cell (RBC) indices in euglycemic type 2 DM patients. The study was conducted with the objective of studying the correlation between HbA1c and anemia in euglycemic diabetic patients having controlled blood glucose over a period of 3 monthsMethodology: This cross-sectional study was conducted between May 2020 and May 2021 at the Department of General Medicine, Government Medical College, Kota, Rajasthan, India. All euglycemic diabetic patients with controlled blood glucose over a period of 3 months attending the outpatient department and fulfilling inclusion and exclusion criteria were enrolled in the studyInclusion criteria: All euglycemic type 2 DM patients with controlled blood glucose having three consecutive normal blood glucose levels [fasting blood sugar (FBS)-80-130 mg/dL and postprandial blood sugar (PP2BS) test-<180 mg/dL] over a period of 3 months from the outpatient departmentExclusion criteria: Type 1 DM and latent autoimmune diabetes of adults, patients with hemolytic anemia, pregnancy, chronic alcoholism, chronic kidney disease, chronic liver disease, combined deficiency anemia, patients with increased FBS and PP2BS, acute and chronic inflammatory state, malignancy, anemia of chronic disease, and vitamin B12 deficiency were excluded from our studyDetailed investigations of diabetes and anemia were conducted. The effect of anemia on HbA1c was assessed, and the correlation of anemia with mean HbA1c was analyzed statistically Results: The prevalence of anemia in diabetic patients is 56.8%. Normocytic normochromic anemia is the most common, which was observed among 48.86% of diabetic patients. The median HbA1c of anemic patients is higher than nonanemic patients (p < 0.01). There is a negative correlation between Hb and HbA1c (p < 0.01). The correlation of RBC indices, that is, mean corpuscular Hb (MCH), mean corpuscular volume (MCV), and MCH with HbA1c, is also negative (p < 0.01). There is a negative correlation between HbA1c and serum ferritin level, as indicated by the Pearson correlation test (p-value of <0.01)Conclusion: Anemia is prevalent in type 2 DM patients without renal involvement, and also normocytic normochromic type is the most common, followed by iron deficiency anemia (IDA). HbA1c levels are significantly affected by the presence of moderate anemia in spite of controlled glycemia.

Role of Platelet to Lymphocyte Ratio (PLR) and its Correlation with NIHSS (National Institute of Health Stroke Scale) for Prediction of Severity in Patients of Acute Ischemic Stroke.

BACKGROUND AND OBJECTIVES: Stroke is the second leading cause of death and third most common cause of disability-adjusted life years in the world. Atherosclerosis plays a key role in the pathogenesis of stroke and inflammation is central in the initiation, progression and complications of atherosclerosis by mediating every stage of atheroma development. High platelet counts may increase thrombocyte activation and aggravate the release of inflammatory mediators. In contrast, lymphocytes exert anti-inflammatory response in atherosclerosis development. The advantage of platelet to lymphocyte ratio (PLR) is that it reflects the condition of both inflammation and thrombosis pathways and is more valuable than either platelet or lymphocyte counts alone. This emerging marker has not been frequently studied with acute ischemic stroke; hence aim of the present study was to find out the role of PLR (Platelet to lymphocyte ratio) in patients of acute ischemic stroke and correlating with NIHSS for predicting the prognosis. MATERIAL AND METHODS: 100 cases of AIS and equal number of age and gender matched control were enrolled in the study. NIHSS score and PLR (from the CBC test) was calculated both at admission and on day 7 or discharge. RESULTS: Maximum subjects in our study were in the age range of 61-70 years with males (69%) outnumbering females (31%). Incidence of hypertension, diabetes mellitus, hyperlipidemia, smoking and alcoholism was more in the cases than controls. Mean PLR was higher in the patients of AIS (235.98±93.92) as compared to control group (115.60±27.87) (p=0.0001). Moreover, there was statistically significant, positive correlation between PLR and NIHSS score both at admission and discharge. PLR value increased significantly from the baseline in patients who deteriorated (263.42±108.98 to 346.28±125.35; p=0.016), decreased drastically in patients who improved (242.27±75.14 to 167.19±57.91; p=0.0001) and did not change much in patients who tend to remain static (181.35±105.40 to 183.36±111.61; p=0.955). CONCLUSION: Platelet to lymphocyte ratio (PLR) is a simple, cost effective and easily obtainable novel inflammatory marker that may help in predicting the severity of disease and prognosis in terms of functional outcome as evidenced by its increased value in patients of acute ischemic stroke as well as its linear positive correlation with NIHSS score.

Predicting QT interval prolongation in patients diagnosed with the 2019 novel coronavirus infection.

INTRODUCTION: 2019 novel coronavirus (COVID-19) patients frequently develop QT interval prolongation that predisposes them to Torsades de Pointes and sudden cardiac death. Continuous cardiac monitoring has been recommended for any COVID-19 patient with a Tisdale Score of seven or more. This recommendation, however, has not been validated. METHODS: We included 178 COVID-19 patients admitted to a non-intensive care unit setting of a tertiary academic medical center. A receiver operating characteristics curve was plotted to determine the accuracy of the Tisdale Score to predict QT interval prolongation. Multivariable analysis was performed to identify additional predictors. RESULTS: The area under the curve of the Tisdale Score was 0.60 (CI 95%, 0.46-0.75). Using the cutoff of seven to stratify COVID-19, patients had a sensitivity of 85.7% and a specificity of 7.6%. Risk factors independently associated with QT interval prolongation included a history of end-stage renal disease (ESRD) (OR, 6.42; CI 95%, 1.28-32.13), QTc ≥450 ms on admission (OR, 5.90; CI 95%, 1.62-21.50), and serum potassium ≤3.5 mmol/L during hospitalization (OR, 4.97; CI 95%, 1.51-16.36). CONCLUSION: The Tisdale Score is not a useful tool to stratify hospitalized non-critical COVID-19 patients based on their risks of developing QT interval prolongation. Clinicians should initiate continuous cardiac monitoring for patients who present with a history of ESRD, QTc ≥450 ms on admission or serum potassium ≤3.5 mmol/L.

Clinical Features and Risk Factors for In-Hospital Mortality From COVID-19 Infection at a Tertiary Care Medical Center, at the Onset of the US COVID-19 Pandemic.

BACKGROUND: Mortality from COVID-19 has been associated with older age, black race, and comorbidities including obesity, Understanding the clinical risk factors and laboratory biomarkers associated with severe and fatal COVID-19 will allow early interventions to help mitigate adverse outcomes. Our study identified risk factors for in-hospital mortality among patients with COVID-19 infection at a tertiary care center, in Detroit, Michigan. METHODS: We conducted a single-center, retrospective cohort study at a 776-bed tertiary care urban academic medical center. Adult inpatients with confirmed COVID-19 (nasopharyngeal swab testing positive by real-time reverse-transcriptase-polymerase-chain-reaction (RT-PCR) assay) from March 8, 2020, to June 14, 2020, were included. Clinical information including the presence of comorbid conditions (according to the Charlson Weighted Index of Comorbidity (CWIC)), initial vital signs, admission laboratory markers and management data were collected. The primary outcome was in-hospital mortality. RESULTS: Among 565 hospitalized patients, 172 patients died for a case fatality rate of 30.4%. The mean (SD) age of the cohort was 64.4 (16.2) years, and 294 (52.0%) were male. The patients who died were significantly older (mean [SD] age, 70.4 [14.1] years vs 61.7 [16.1] years; P < 0.0001), more likely to have congestive heart failure (35 [20.3%] vs 47 [12.0%]; P = 0.009), dementia (47 [27.3%] vs 48 [12.2%]; P < 0.0001), hemiplegia (18 [10.5%] vs 18 [4.8%]; P = 0.01) and a diagnosis of malignancy (16 [9.3%] vs 18 [4.6%]; P = 0.03).From multivariable analysis, factors associated with an increased odds of death were age greater than 60 years (OR = 2.2, P = 0.003), CWIC score (OR = 1.1, P = 0.023), qSOFA (OR = 1.7, P < 0.0001), WBC counts (OR = 1.1, P = 0.002), lymphocytopenia (OR = 2.0, P = 0.003), thrombocytopenia (OR = 1.9, P = 0.019), albumin (OR = 0.6, P = 0.014), and AST levels (OR = 2.0, P = 0.004) on admission. CONCLUSIONS: This study identified risk factor for in-hospital mortality among patients admitted with COVID-19 in a tertiary care hospital at the onset of U.S. Covid-19 pandemic. After adjusting for age, CWIC score, and laboratory data, qSOFA remained an independent predictor of mortality. Knowing these risk factors may help identify patients who would benefit from close observations and early interventions.

Bilateral Vertebral Artery Dissection: A Case Report with Literature Review.

Vertebral artery dissection (VAD) is a rare cause of ischemic stroke in young patients. The largely nonspecific symptoms and delayed presentation pose a serious diagnostic challenge. Medical management with either anticoagulation or antiplatelet therapy is recommended, but there are no reports of successful dual therapy. We report a case of spontaneous bilateral vertebral artery dissections (VADs) treated with both anticoagulation and antiplatelet therapy and a literature review on clinical presentation and the current medical and surgical management options. A 37-year-old healthy female presented to the emergency department with worsening neck pain and headache for two weeks despite over-the-counter medication, block therapy, yoga, and deep tissue neck massage. She denied any trauma but admitted to multiple roller coaster rides over the past few months. CT angiography was concerning for VADs, and MRI brain revealed multiple strokes in the left posterior inferior cerebellar artery (PICA) territory. Cerebral arteriography confirmed the diagnosis of VADs. The patient was initiated on warfarin, along with atorvastatin and aspirin. She was discharged home with no complications and followed up with neurology as an outpatient. MR angiography after three months revealed complete resolution of the dissection. The patient did not report any bleeding complications from dual therapy.

Differential adhesion of Streptococcus gordonii to anatase and rutile titanium dioxide surfaces with and without functionalization with chlorhexidine.

The majority of dental implants are composed primarily of titanium and have an outer layer of titanium dioxide. Crystalline titanium dioxide most commonly exists in one of the two structures, anatase and rutile, and both of these have been observed on commercially available dental implants. Early implant failure can be associated with postoperative infection due to implant contamination during or immediately after surgery. The impetus of this study was to investigate whether functionalization of anatase and rutile titanium dioxide surfaces with chlorhexidine-reduced subsequent colonization of the surface by Streptococcus gordonii. Exposure to 100 mg x L(-1) chlorhexidine for 60 s resulted in a fivefold reduction in S. gordonii coverage on anatase and a twofold reduction on rutile. This may be related to a preferential adsorption of chlorhexidine to anatase compared with rutile. The reduction in bacterial coverage was not due to desorption of chlorhexidine into solution. More bacteria were observed on anatase than rutile surfaces without chlorhexidine functionalization, indicating that crystal structure may have a significant effect on bacterial colonization. In conclusion, functionalization with chlorhexidine reduced bacterial coverage on titanium dioxide surfaces, and anatase surfaces may be more amenable to such treatment than rutile.

Associative learning in biochemical networks.

It has been recently suggested that there are likely generic features characterizing the emergence of systems constructed from the self-organization of self-replicating agents acting under one or more selection pressures. Therefore, structures and behaviors at one length scale may be used to infer analogous structures and behaviors at other length scales. Motivated by this suggestion, we seek to characterize various "animate" behaviors in biochemical networks, and the influence that these behaviors have on genomic evolution. Specifically, in this paper, we develop a simple, chemostat-based model illustrating how a process analogous to associative learning can occur in a biochemical network. Associative learning is a form of learning whereby a system "learns" to associate two stimuli with one another. Associative learning, also known as conditioning, is believed to be a powerful learning process at work in the brain (associative learning is essentially "learning by analogy"). In our model, two types of replicating molecules, denoted as A and B, are present in some initial concentration in the chemostat. Molecules A and B are stimulated to replicate by some growth factors, denoted as G(A) and G(B), respectively. It is also assumed that A and B can covalently link, and that the conjugated molecule can be stimulated by either the G(A) or G(B) growth factors (and can be degraded). We show that, if the chemostat is stimulated by both growth factors for a certain time, followed by a time gap during which the chemostat is not stimulated at all, and if the chemostat is then stimulated again by only one of the growth factors, then there will be a transient increase in the number of molecules activated by the other growth factor. Therefore, the chemostat bears the imprint of earlier, simultaneous stimulation with both growth factors, which is indicative of associative learning. It is interesting to note that the dynamics of our model is consistent with certain aspects of Pavlov's original series of conditioning experiments in dogs. We discuss how associative learning can potentially be performed in vitro within RNA, DNA, or peptide networks. We also describe how such a mechanism could be involved in genomic evolution, and suggest relevant bioinformatics studies that could potentially resolve these issues.