Dopamine-Induced Apoptosis of Lactotropes Is Mediated by the Short Isoform of D2 Receptor

Dopamine, through D2 receptor (D2R), is the major regulator of lactotrope function in the anterior pituitary gland. Both D2R isoforms, long (D2L) and short (D2S), are expressed in lactotropes. Although both isoforms can transduce dopamine signal, they differ in the mechanism that leads to cell response. The administration of D2R agonists, such as cabergoline, is the main pharmacological treatment for prolactinomas, but resistance to these drugs exists, which has been associated with alterations in D2R expression. We previously reported that dopamine and cabergoline induce apoptosis of lactotropes in primary culture in an estrogen-dependent manner. In this study we used an in vivo model to confirm the permissive action of estradiol in the apoptosis of anterior pituitary cells induced by D2R agonists. Administration of cabergoline to female rats induced apoptosis, measured by Annexin-V staining, in anterior pituitary gland from estradiol-treated rats but not from ovariectomized rats. To evaluate the participation of D2R isoforms in the apoptosis induced by dopamine we used lactotrope-derived PR1 cells stably transfected with expression vectors encoding D2L or D2S receptors. In the presence of estradiol, dopamine induced apoptosis, determined by ELISA and TUNEL assay, only in PR1-D2S cells. To study the role of p38 MAPK in apoptosis induced by D2R activation, anterior pituitary cells from primary culture or PR1-D2S were incubated with an inhibitor of the p38 MAPK pathway (SB203850). SB203580 blocked the apoptotic effect of D2R activation in lactotropes from primary cultures and PR1-D2S cells. Dopamine also induced p38 MAPK phosphorylation, determined by western blot, in PR1-D2S cells and estradiol enhanced this effect. These data suggest that, in the presence of estradiol, D2R agonists induce apoptosis of lactotropes by their interaction with D2S receptors and that p38 MAPK is involved in this process

Platelet-rich plasma - a revolutionary therapeutic option in multi-disciplinary indications

Background: Platelet-rich plasma (PRP) was originally described as a small volume of plasma that contains higher concentrations of platelets, compared to peripheral blood. Although currently the use of PRP in most indications is off-label, it is not prohibited. Initially, PRP was used for wound healing and tissue regeneration in fields such as orthopaedics, dermatology, maxillofacial surgery and dentistry. Aim of the study: The aim of this article was to present and summarise the modern production methods, the mechanism of action at the molecular and biochemical level and the most important uses and indications of PRP in present-day medicine. Material and methods: A cross-sectional search of relevant literature was performed in databases using accepted wording. Publications from 2003-2023 were included. The entire process has been supplemented with additional procedures to increase the reliability of this publication. Results: Orthopaedics has gained many minimally invasive therapeutic solutions thanks to PRP. Its effects on ligament and tendon tissues have been studied, where promising data have been proven. Also in aesthetic medicine and dermatology, many treatment strategies have been developed using PRP, mainly for the treatment of acne, androgenic alopecia and delaying tissue ageing as much as possible. Conclusion: Platelet-rich plasma has found application in the treatment of many conditions in orthopaedics, dermatology, aesthetic medicine and dentistry. It is characterised by good therapeutic efficacy, with relatively low risk. However, high-quality studies are still lacking to provide more reliable data

Reviewing the current treatment approaches for vitiligo – analysis of literature

Introduction: Vitiligo is a relatively common systemic, idiopathic disease within the spectrum of pigmentary disorders. Clinically, it presents as depigmented patches on the skin, resulting from the loss or dysfunction of melanocytes. Despite not impacting life expectancy, vitiligo should not be perceived merely as a cosmetic defect, given its potential to burden daily life and the frequent experiences of stigmatization by patients. Aim of the study: The aim of this study was to summarize the existing knowledge regarding the treatment of vitiligo. The current treatments in practice, alongside potential new methods, were summarized and described. Materials and methods: The literature available in the PubMed database was reviewed using the following keywords: “Vitiligo”, “Vitiligo treatment”, “Vitiligo new treatment methods”, “Targeted therapies for vitiligo”. Conclusions: Vitiligo is a multifactorial and still inadequately understood disorder, leading to a lack of fully safe and effective treatment. As in the management of other diseases, there should be a push for highly personalized treatments for patients. This approach takes into account the differences among patients and ensures a better chance of a positive clinical response. To achieve this goal, it's necessary to explore new treatment methods and expand ongoing research efforts. Also, raising awareness of vitiligo is key to increasing acceptance, support and understanding for those affected by the disease

A review on the classification and current treatment of Chronic Kidney Disease

Introduction: Chronic Kidney Disease (CKD) is a chronic condition which is characterized by the gradual loss of kidney function over time leading to End-Stage Renal Disease (ESRD). Role of kidneys is very vital to maintain homeostasis of the system. CKD is classified into five stages based on the estimated Glomerular Filtration Rate (eGFR). CKD is a long-term condition which cannot be completely cured. Treatment focuses on managing underlying conditions , slowing disease progression and addressing complications.  Aim of the study:  Purpose of this study is to encapsulate available knowledge about classification and therapeutic options for patients with Chronic Kidney Disease and End-Stage Kidney Disease. Both old and new treatment methods have been summarized in the following publication. Material and methods:  Literature available in the PubMed database was reviewed using the following keywords: “Chronic kidney disease”, “ACE inhibitors” , “Angiotensin II Type 1 Receptor Blockers", “Diabetic Kidney Disease” ,”End-Stage Kidney Disease”, “Dapagliflozin”,  Conclusions:  Chronic Kidney Disease is a condition which is progressive and affects more than 10% of the general population worldwide totaling over 800 million people. There are many causes of chronic kidney disease; therefore, it is important to focus on slowing the progression of the disease, minimizing complications and modifying risk factors

Acne vulgaris - review on pathogenesis and treatment

Introduction: Acne vulgaris is a common dermatological problem, resulting from a complex interaction of many factors. This article presents a comprehensive overview of the pathogenesis of this condition, examining key aspects such as inflammatory factors, sebum production, colonization by P. acnes, endocrine disruption and lifestyle influences. In addition, various treatments are discussed, including the effectiveness of isotretinoin-based therapy and the potential benefits of antibiotics and retinoids in specific patient groups. Aim of study: The aim of the study is to summarize the available knowledge about the Acne vulgaris. The epidemiology, etiology, and methods of treatment were summarized and described. Materials and methods: The literature available in PubMed database was reviewed using following keywords: “Acne vulgaris”, “Isotretinoin”, “Therapy of Acne”. Conclusion: Research into acne vulgaris has been extensive, yet variations in study methods and descriptions have prevented definitive conclusions. Tailored care for each patient is crucial due to these differences. The disease's development involves various factors including inflammatory mediators, excess sebum production, P. acnes colonization, hormonal imbalances, and lifestyle impacts. Isotretinoin remains the most effective treatment, albeit with potential side effects that need consideration. For specific patient groups, topical antibiotics and retinoids may offer beneficial effects

From pathogenesis to current treatment of the cutaneous psoriasis - a literature review

Introduction: Psoriasis is a chronic inflammatory autoimmune disease that can be divided into several subtypes based on the areas of the body occupied by the lesions and the severity of the disease. The overall prevalence of psoriasis ranges from 0 to 11,8%. The disease occurs with equal frequency in both sexes. PsO cannot be completely cured, so many patients experience stigma and have diminished self-esteem due to the characteristic appearance of the lesions.   Aim of the study: The purpose of the study is to summarize the available knowledge about classification and options for psoriasis treatment. The options in diagnosis and treatment, including the latest methods, were described and summarized.   Materials and methods: Literature available in the PubMed database was reviewed using the following keywords: “Psoriasis”, “Nail Psoriasis”, “Psoriasis Vulgaris”, “Psoriasis Treatment”, “New Psoriasis Treatment”, “Psoriasis Classification”, “Biologic Therapy for Psoriasis”, “Systemic Therapy for psoriasis”.   Conclusions: Psoriasis is a genetic skin condition mediated by the immune system. The underlying mechanisms entail intricate interactions between the innate and adaptive immune system. There are various indices for assessing the severity of psoriasis, the most commonly used of which is PASI(Psoriasis Area and Severity Index). Retinoids, cyclosporine and methotrexate are the non-biologic therapies most frequently employed for moderate to severe psoriasis treatment, while topical therapy, which includes mainly corticosteroids and vitamin D analogues, is a successful approach for effectively managing mild psoriasis

Phototherapy in sclerotic skin diseases

Introduction: UVA therapy is used in treatment of wide range of skin diseases, which proceed with hardening of the skin or inflammation. First use of ultraviolet radiation can be tracked down to 1896. Wavelength vary among diseases against which it is used. In literature as results of therapy are mentioned improvement of skin elasticity, reduction of inflammation, and protection from relapse. In terms of sclerotic skin diseases most promising effect is seen in reducing skin hardness in the mechanism of stimulating collagen breakdown. The therapy itself has a good safety profile, but is time-consuming due to the high frequency of irradiation. Effectiveness of treatment are determined by factors such as advancement of skin lesions, pigmentation and the intensity of the therapy itself. Aim of study: The aim of the study is to summarize the available knowledge about the UVA therapy in skin diseases. The way of work, effectiveness of treatment, side effects and potential new methods of use were summarized and described. Materials and methods:   The literature available in PubMed database was reviewed using following keywords: “UVA therapy”, “UVA”, “Scleroderma”, “Buschke’s Scleredema”, “Systemic sclerosis”, “Morphea” Conclusion: UVA1 therapy is one of the most effective therapeutic options in subtypes of morphea which affect only superficial tissues. Phototherapy accelerate healing of ulcerations on fingertips in patients with Systemic sclerosis. Patient suffering from Buschke Sclerederma had good response to therapy. Observed side effects consist of hyperpigmentation, erythema, xerosis and pruritus in range from mild to severe. Carcinogenic effect has not yet been proven

Ophthalmic examination in children – comprehensive literature review

The proper functioning of the patient in the environment is made possible by the interaction of individual systems or single organs. The visual system is undoubtedly one of the most important; it is the one that enables us to find our way and acquire a range of skills to survive in the environment. Unfortunately, if neglected at a young age, complications may remain for the rest of life. A number of tests have now been introduced to check the development and efficiency of a child's eyesight; their cyclical repetition and appropriate identification of changes or lack of them enable an appropriate diagnosis to be made and treatment to be applied, thanks to which we can eliminate or reduce the defect and, more importantly, prevent the development of a new one. Contrary to appearances, vision screening in children does not take place in a single medical visit, it is an ongoing process, and the activities included in the screening should be carried out at each follow-up visit. This allows the practitioner to detect risk factors and eye abnormalities early on, which increases the chance of a positive outcome for the patient. It also enables the specialist to identify children who require more frequent eye checks, or patients who should be referred to a specialist qualified in children's eye examination. During the screening examination, the doctor begins by talking to the child and parent about conditions that run in the family. The aim is to detect and identify risk factors that need to be carefully analysed. These factors include, but are not limited to, premature birth, Down's syndrome, cerebral palsy, a family history of strabismus, visual impairment, retinoblastoma, childhood glaucoma, childhood cataract or eye disease and genetic systemic diseases

Smart drugs among students – multidimensional view on present ways of cognitive enhancement

Background: Nootropic drugs, at the beginning of their career, were used in the treatment of diseases such as attention deficit hyperactivity disorder (ADHD), Alzheimer's disease and narcolepsy. Nowadays, they are becoming more and more popular among students, where they are often called smart drugs or cognitive enhancers. Their properties that improve intellectual abilities and cognitive functions are used to, among other things, improve academic performance. Aim of the study: The purpose of this article was to summarize the current state of knowledge relating to the use of smart drugs among students. This study discusses the multidimensional issues of using this group of drugs. Material and methods: A cross-sectional search of relevant literature was performed in databases using accepted wording. Publications from 2003-2023 were included. The entire process has been supplemented with additional procedures to increase the reliability of this publication. Results: In most sources, the most common representative of smart drugs turned out to be methylphenidate. Nootropics were most often obtained by obtaining a prescription from a doctor, online trading or from friends. The factors motivating the use of substances from this group are primarily the desire to improve academic results, competitiveness and the number of obligations at the university. There are many risks associated with their use, but students are more aware of the positive effects. Conclusion: This paper presents various dimensions of the progressive spread of nootropic drugs. In addition to their undeniably positive effects, there are many risks, which are discussed in this article. Students' awareness should be formed through appropriate educational methods

Cone-beam computed tomography in implant dentistry - guidelines, current concepts and limitations for practice

This article issues scientific background of Cone-beam computed tomography (CBCT) and the importance of taking x-rays before and after implant placement in daily practice as a common care. The review will introduce cone-beam computed tomography guidelines, restrictions and intraoperartive issues for instance nerve damage and bleeding incidents. Modern CBCT technology enables specialists to avoid making a wrong diagnosis, which translates into a higher percentage of people with a positive treatment outcome. Diagnostic radiology is a crucial element of every dental treatment planning. CBCT market is expanding gradually since two decades, there are more than 85 distinct CBCT tools available. CBCT is a three-dimensional (3D) imaging used nowadays in dentistry with increased frequency and offers volumetric data on jaw bones and teeth with relatively low radiation doses and costs. Currently, the greatest advantage of CBCT examinations over radiographs is the fact that the image obtained is presented in a 3D projection and not, as is the case, in 2D. It has the ability to help a wider range of patients, but the use of CBCT also has negative consequences. Routine or excessive use has resulted in increased radiation doses accumulating in the patient's body, which translates into an increased risk of adverse effects. The risk varies according to the age of the patient under study and is directly proportional to it, that is, it is highest for young people and lower for older people. The potential risk is also slightly higher in the female population. For this reason, creating awareness of the mandatory patient safety management of CT scans is a key process by which X-ray exposures can be optimised