Articles

Rats with Postinfarction Heart Failure: Effects of Propranolol Therapy on Intracellular Calcium Regulation and Left Ventricular Function

Published on: 28th November, 2023

Patients with heart failure may live longer if they receive chronic treatment with beta-adrenergic blocking medications. Unresolved are the mechanisms underlying the beneficial effects and if they may be applied to ischemic heart failure. Rats (n = 28) underwent echocardiographic-Doppler exams one and six weeks following a simulated operation or myocardial infarction (MI). After the first echocardiography, rats were randomized to either no therapy or 500 mg/l of propranolol in their drinking water. The noninfected left ventricular (LV) papillary muscles were used to record isometric contractions and intracellular Ca transients simultaneously.Untreated MI rats had a restrictive LV diastolic filling pattern, decreased systolic function (13% ± 2%), and significant LV dilatation (10.6 ± 0.4 mm vs. 8.9 ± 0.3 mm, MI vs. control). The LV chamber diameters of the propranolol-treated MI rats were 10.6 ± 0.5 mm, and systolic performance (13% ± 2%). Higher LV end-diastolic pressures (27 ± 2 mmHg vs. 20 ± 3 mmHg) and a more constrained LV diastolic filling pattern (increased ratio of early to late filling velocities and faster E wave deceleration rate) were seen in the propranolol-treated animals. Papillary muscle contractility in untreated MI rats was lower (1.6 ± 0.3 g mm²). Furthermore, the inotropic response to isoproterenol was attenuated, and Ca transients were extended. During isoproterenol stimulation, beta-adrenergic blocking administration had no effect on force development (1.6 ± 0.3 g mm²) or the length of Ca transients.Rats with postinfarction heart failure receiving chronic propranolol treatment did not have improvements in systolic function or LV remodeling. Propranolol exacerbated LV diastolic pressures and filling patterns. Additionally, there was no discernible improvement in intracellular contractility following treatment, Calcium control, or beta-adrenergic sensitivity in the myocardium that is not infarcted).
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Update on the Use of Mesenchymal Stem Cells in the Treatment of Various Infectious Diseases Including COVID-19 Infection

Published on: 5th December, 2023

Mesenchymal Stem Cells (MSCs) have antimicrobial, anti-inflammatory, immunomodulatory, and regenerative potentials. Additionally, utilization of MSCs in the clinical arena has been shown to be safe and well tolerated. Hence, this form of cellular therapy has gained particular attention in the treatment of several infectious disorders and their complications. MSCs have been successfully used in the treatment of the following infections and their complications: bacterial infections including complicated sepsis; viral infections including Human Immunodeficiency Virus (HIV), hepatitis B and C viruses, and Coronavirus disease (COVID-19) complicated by acute respiratory distress syndrome; parasitic infections including schistosomiasis, malaria, and Chagas disease; and mycobacterial infections including tuberculosis. The use of MSCs derived from certain sources and Extracellular Vesicles (ECVs) derived from MSCs has improved their efficacy and reduced their side effects. However, the clinical application of MSCs in the treatment of several infectious diseases still faces real challenges that need to be resolved. The current status of MSCs and the controversies related to their utilization in various infections will be thoroughly discussed in this review. 
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Update on the Use of Mesenchymal Stem Cells and their Products in Hematopoietic Stem Cell Transplantation

Published on: 29th November, 2023

Graft Versus Host Disease (GVHD) is a major limitation to the success of allogeneic Hematopoietic Stem Cell Transplantation (HSCT) as Steroid-Refractory (SR) acute GVHD carries poor prognosis due to the absence of an efficacious second-line therapy. Mesenchymal Stem Cells (MSCs) which have immunosuppressive, immunomodulatory, and regenerative properties may become a highly effective therapeutic modality for SR-GVHD in the near future. MSCs have already been approved to treat childhood SR-GVHD in Japan, and they have been conditionally licensed in New Zealand and Canada. It is expected that MSCs will be approved for the treatment of SR-GVHD in adults in Europe, North America, and other parts of the world within a few years. Utilization of the recently introduced techniques including the use of MSC products such as exosomes and Extracellular Vesicles (ECVs) instead of the parent MSCs, robotic manufacturing technology, and genetic engineering of MSCs will ultimately overcome the remaining obstacles facing the widespread utilization of MSCs and their products as therapeutics not only in HSCT but also in other medical fields. The aim of this review is to provide an update on the remarkable progress achieved in the use of MSCs and their products in the field of HSCT.
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Molluscicidal Efficacy of Essential oils of Syzygium aromaticum Clove and Tachyspermum ammi Seeds against Lymnaea acuminata, a Vector Snail

Published on: 29th November, 2023

In eastern Uttar Pradesh, fascioliasis, an endemic zoonotic disease, is quite prevalent. Essential oils that are produced from various plants are extremely important to human health. The current study found that the essential oils from Tachyspermum ammi seeds and Syzygium aromaticum cloves are effective herbal molluscicides against the vector snail Lymnaea acuminata. Syzygium aromaticum cloves and Tachyspermum ammi seeds are used to extract their essential oils using both conventional and unconventional techniques, such as solvent extraction (SE) and hydrodistillation (HD). The results section makes it evident that both of the essential oils from Syzygium aromaticum clove and Tachyspermum ammi seeds have a high level of molluscicidal activity (24-hour LC50 values are 3.01 and 2.35), particularly against the vector snail Lymnaea acuminata. The current investigation unequivocally showed that the exposed vector snails to the essential oils are extremely harmful. The aim of the present investigation is to establish the molluscicidal activity of the essential oils of Syzygium aromaticum clove and Tachyspermum ammi seeds against the vector snail Lymnaea acuminata.
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Diversity of Rust Fungi Causing Plant Diseases in Abbottabad, Khyber Pakhtunkhwa (KP), Pakistan

Published on: 27th November, 2023

In 2018, a survey of rust fungi and their associated hosts was attempted in the thandiani regions of Pakistan. In this paper, we provided descriptions and illustrations of six rust species viz. Melampsora euphorbiae, Phragmidium barclayi, Puccinia ambegua, Pucciniia calcitraipae, Pucciniia mentha and Puccinia ustalis. The Melampsora euphorbiae, Puccinia ambegua, and Puccinia ustalis were collected as a new host record from Abbottabad. Most of the rust fungi were collected from herbaceous wild plants. This study suggests further exploration of the area of rust disease in order to assess the diversity of these fungi. This research work is an addition to available data related to the Urediniales of Pakistan having special reference to Abbottabad District, Khyber Pakhtunkhwa, Pakistan.
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Challenges of Novice Nurse Educators’ Transition from Clinical Practice to Academia in Ghana: A Qualitative Study

Published on: 27th November, 2023

Background: The recruitment of experienced clinical nurses into vacant faculty positions is a global strategy for preparing, employing, and retaining competent nurse educators. As clinical nurses transition to academia, many struggle with unique challenges that affect their adaptation to the academic setting. Thus, understanding novice nurse educators’ transitional challenges is critical to addressing this threat. Aim: This study aimed to explore the challenges of novice nurse educators’ transition from clinical practice to academia in Ghana. Methods: A descriptive qualitative study design was employed for this study. A purposive sampling technique was used to recruit 12 novice nurse educators from three health training institutions in the Upper East Region of Ghana. A semi-structured interview guide was used to collect data through in-depth individual interviews. The interviews were audio-recorded, transcribed verbatim, and thematically analyzed.Results: Four themes emerged: poor administrative support, poor preparation, increased workload and stress, and role ambiguity. Novice nurse educators lacked formal orientation, formal mentorship, formal education in teaching, and post-graduate education. Novices were also challenged by increased workload and role ambiguity. Conclusion: Supporting novice nurse educators' transition from clinical practice would be better served by college administrators’ creation and implementation of formal orientation and mentorship programs.
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Evaluation of In vitro and Ex vivo Models for Studying the Effectiveness of Vaginal Drug Systems in Controlling Microbe Infections: A Systematic Review

Published on: 28th November, 2023

The survey gives an in-depth examination of medicate assimilation challenges within the genital range and the improvement of vaginal medicate conveyance gadgets to overcome these challenges. It investigates the components involved in medicate discharge within the genital locale and examines commonly utilized vaginal sedate conveyance frameworks such as nanoparticles and hydrogels. The survey centers on the applications of these conveyance frameworks in controlling bacterial vaginal diseases. The plan issues related to vaginal sedate conveyance gadgets are moreover examined, highlighting the significance of considering variables such as mucoadhesion and bodily fluid porousness. The survey portrays different in vitro and ex vivo models utilized for assessing these frameworks, counting organoids and new human cervical bodily fluid. The choice of show depends on the particular objectives and characteristics of the definition. The audit emphasizes the noteworthiness of utilizing these models to pick up important bits of knowledge and make precise forecasts with respect to the execution of medicate conveyance frameworks in vivo. Moreover, grandstands progressed models utilized for other mucosal locales as a potential motivation for future models of the female regenerative framework. Generally, the audit highlights the significance of understanding organic instruments and planning compelling vaginal drug conveyance frameworks to progress sedate conveyance within the genital region. It emphasizes the require for suitable models to evaluate and anticipate the execution of these conveyance frameworks.
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Women's Perceptions of Medical Treatment Versus Surgical Management of First-trimester Miscarriage

Published on: 27th November, 2023

Background: Miscarriage is a common gynecological problem and early pregnancy loss occurs in the first trimester. Early pregnancy miscarriage is managed expectantly, surgically, and medically. Medical management is a new treatment option, also surgical evacuation is the standard treatment for some types and presentations of miscarriage. Medical management might be more suitable instead of surgical evacuation, it may be less costly than surgical treatment and consequently, due to its lower complications, most patients prefer it.Purpose: This study aimed to determine women's perception of medical treatment versus surgical intervention, complications associated with surgical procedures, and medical treatment.Methodology: It was a comparative, hospital-based study conducted in Bashair Teaching Hospital, on 336 patients diagnosed with miscarriage in the first trimester, 168(group A) were treated medically while 168(group B) were treated surgically. All participating patients in the study fulfilled the selection criteria, that is, the provision of an informed consent and agreement to participate in the study. Results: The total number of women during the period of study was 336. The study found that 239(71%) of women prefer medical management compared to 97 (29%) preferring surgery. The complications associated with the medical treatment were (4.2%) infection, (0.6%) bleeding, and (95.2%) without obvious complications. The complications associated with surgical procedures were (7.7%) developmental infection, (16.1%) bleeding, (10.7%) incomplete evacuation, (1.8%) uterine perforation, and (63.7%) without obvious complications.Conclusion: The study found that over two-thirds of patients Favor medical treatment over surgical procedures. It has also revealed that medical treatment is very effective in terminating pregnancies within the first trimester.
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Fever of Unknown Origin in Children: The Challenge of History Taking

Published on: 24th November, 2023

A fever of unknown origin (FUO) in children is usually described as a fever of at least 8 days duration with no apparent diagnosis after initial investigations, including taking medical history and preliminary laboratory assessment. Infectious diseases are the most common cause of FUO, followed by rheumatologic and neoplastic conditions. In this report, we present a case of a 15-year-old Caucasian boy with a silent past medical history, who presented at our Pediatric ER department with a three-day history of fever, fatigue, and abdominal pain with diarrhoea. Initial laboratory testing and microbiological work-up were non-significant. At hospital admission, a broad infectious diagnostic work-up was pursued, including serologies and polymerase-chain-reaction (PCR) for CMV, EBV, HAV, Parvovirus, Toxoplasma gondii and Adenovirus, all negative. Given mild splenomegaly and linfadenopathy, systemic Juvenile Idiopathic Arthritis (s-JIA) was suspected, as well as Multi-inflammatory Syndrome in Children (MIS-C), but the patient did not meet their main diagnostic criteria. Malignancy was ruled out by a negative bone marrow fine-needle aspiration cytology and whole-body PET-CT scan. On hospital day 8, Brucella was identified on a new set of blood cultures and a combined antibiotic therapy was started with IV Gentamicin plus per os Doxycycline. The patient’s general conditions rapidly improved, and both fever and diarrhoea resolved. A reassessment of the patient’s medical history before discharge revealed exposure to unpasteurized soft cheese in the weeks prior to the onset of symptoms. This case underlines the importance of taking a complete medical history, as well as a full diagnostic work-up to unveil unusual infectious etiologies behind FUO. After the preliminary negative microbiological tests, a connective tissue disease was ruled out (i.e. lack of cutaneous or articular involvement), as well as malignancy, which led to a closer evaluation for infection and the diagnosis of Brucellosis.
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Emerging One Health Preparedness to Combat National Burden of Diseases in Pakistan: A Comprehensive Insight

Published on: 23rd November, 2023

In order to integrate and enhance the health of people, animals, and the environment, a multidisciplinary “One Health” concept has been coined. However, developing countries have frequently lagged in embracing this innovative vision. Pakistan’s ecology, human health, and animal health have all been severely jeopardized due to a lack of resources. Human health is significantly impacted by the spread and comeback of zoonotic illnesses, especially for people who live in rural regions and frequently interact with domestic or wild animals. More than 75% of zoonotic diseases were transmitted contiguously from animals to humans or indirectly through interactions among agents or vectors (including both humans and other animals). This review article gives critical insights into the most common zoonotic diseases found in Pakistan in addition to underlining the importance of the “One Health” philosophy in the management of these illnesses. Interdisciplinary research efforts are required given the current circumstances in order to politicize sustainable solutions for decreasing the disease burden in human and animal populations simultaneously.
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