جستجوی مقالات مرتبط با کلیدواژه "2" در نشریات گروه "پزشکی"
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مقدمه
بیماری های قلبی عروقی عامل اصلی مرگ و میر در جهان محسوب می شوند. بر اساس آمار سازمان بهداشت جهانی، در سال 2022 این بیماری ها موجب مرگ نزدیک به 8/19 میلیون نفر در سراسر جهان شده است. یکی از اصلی ترین چالش های پیش رو در مدیریت این بیماری ها تشخیص زود هنگام و درمان به موقع این بیماری ها است. به طور کلی برخی از نشانگرهای مورد استفاده در حال حاضر اختصاصیت چندانی ندارند، لذا نیاز به نشانگرهای اختصاصی تری در این بیماری ها به شدت احساس می گردد. اگزوزوم ها، به عنوان یکی از ویزیکول های خارج سلولی تقریبا در تمامی سلول های یوکاریوتی تولید می شوند. این میکرووزیکول ها با یک غشای دولایه فسفولیپیدی پوشیده شده اند و پروتئین ها، اسیدهای نوکلئیک، لیپیدها و... را حمل می کنند.
مواد و روش هامطالعات انجام شده در این زمینه از طریق یک مقاله مرور روایی مورد بررسی قرار گرفتند و مقالات موجود در پایگاه های بین المللی PubMed، Scopus و Web of Science را در بر می گیرد.
یافته هاعوامل متعددی از جمله استرس، آسیب سلولی، داروها و سموم بر تولید و ترشح اگزوزوم ها تاثیر می گذارند. اگزوزوم ها نقش مهمی در ارتباطات بین سلولی ایفا می کنند و می توانند به عنوان نشانگرهای زیستی برای استراتژی های تشخیصی و پیش آگهی عمل کنند. همچنین اگزوزوم ها دارای پتانسیل درمانی هستند و به عنوان ناقل های زیستی برای ارائه داروها به شیوه هدفمند به قلب عمل می کنند.
بحث و نتیجه گیریاستفاده از اگزوزوم ها در تشخیص و درمان بیماری های قلبی عروقی می تواند به مدیریت بهتر این بیماری ها کمک کند، اما این کاربرد با چالش هایی در زمینه بالینی مواجه است. این مقاله به بررسی پتانسیل اگزوزوم ها به عنوان ابزاری نوین در این زمینه می پردازد.
کلید واژگان: بیماری های قلبی عروقی, اگزوزوم, نشانگر زیستی, درمان هدفمندYafteh, Volume:27 Issue: 1, 2025, PP 86 -104BackgroundCardiovascular diseases (CVD) are considered the leading cause of mortality worldwide. According to World Health Organization statistics in 2022, these diseases resulted in the deaths of nearly 19.8 million people globally. The early diagnosis and timely treatment are among the main challenges in managing these diseases. Generally, since some of the currently used biomarkers lack specificity; therefore, a stronger need for more specific markers in this area is felt. Exosomes, as one of the extracellular vesicles, are produced in almost all eukaryotic cells. These microvesicles are covered with a bilayer phospholipid membrane and carry proteins, nucleic acids, lipids, etc.
Materials and MethodsThe current narrative review research included studies available in the international databases of PubMed, Scopus, and Web of Science.
ResultsVarious factors, including stress, cellular damage, medications, and toxins can influence the production and secretion of exosomes. Exosomes play a crucial role in intercellular communications and can serve as biological markers for diagnostic and prognostic strategies. Additionally, exosomes have therapeutic potential and act as biological carriers for targeted drug delivery to the heart.
ConclusionBased on the findings obtained, the use of the exosomes in the diagnosis and treatment of cardiovascular diseases could aid in the better management of these conditions; however, its application may be clinically challenging. Moreover, the present study explores the potential of using exosomes as a novel tool in the medical field.
Keywords: Biomarker, Cardiovascular Diseases, Exosomes, Targeted Therapy -
مقدمه
تغییرات پایدار در روان درمانی بر پایه مکانیسم های زیربنایی آن شکل می گیرند. یکی از این مکانیسم های کلیدی تثبیت مجدد حافظه (Memory Reconsolidation) می باشد. این فرآیند زیستی شامل به روز رسانی و اصلاح اطلاعات حافظه بوده و به عنوان مکانیسم بنیادی تغییر در روان درمانی که منجر به تغییرات تحول آفرین می شود، معرفی می گردد. بنابراین هدف این پژوهش، بررسی تثبیت مجدد حافظه به عنوان مکانیسم بنیادین تغییر درمانی که پلی میان علوم اعصاب و روان درمانی است، می باشد.
مواد و روش هااین مطالعه یک مرور روایتی بر گرفته از رساله دکتری روانشناسی است که مقالات مرتبط با کلید واژه های (Memory Reconsolidation، psychotherapy و therapeutic change) از طریق جست وجو در پایگاه های علمی معتبر PubMed،ScienceDirect ، PsycINFO، Scopus و موتور جستجوی Google Scholar در بازه زمانی 2024-1985 جمع آوری شده اند. در مجموع از بین مقالات انگلیسی زبان دارای متن کامل، 48 مقاله مرتبط با موضوع و اهداف پژوهش استخراج شدند.
یافته هامطالعات نشان می دهند که تثبیت مجدد حافظه مکانیسم تغییر مشترک در بین رویکردهای روان درمانی بوده و از طریق تغییر در ساختار حافظه، به روزرسانی و اصلاح خاطرات ناسازگار و در نهایت بازسازی شناختی-هیجانی می تواند باعث تغییرات پایدار و عمیقی در بهبود مشکلات و اختلالات روانی شود.
بحث و نتیجه گیرینتایج نشان دادند که همگرایی علوم اعصاب و روان درمانی از طریق مکانیسم تثبیت مجدد حافظه به عنوان گامی نوین در توسعه شیوه های درمانی کارآمدتر در نظر گرفته می شود. بر همین اساس تمرکز بر تثبیت مجدد حافظه در روان درمانی می تواند اثربخشی درمان را به طور معناداری ارتقا داده و موجب تغییرات عمیق و پایدار در مراجعین شود. بنابراین، پیشنهاد می شود پژوهش های آتی بر توسعه مدل های درمانی مبتنی بر مکانیسم تثبیت مجدد حافظه متمرکز شوند.
کلید واژگان: مکانیسم بنیادی تغییر, تثبیت مجدد حافظه, تغییر تحول آفرین, روان درمانی, علوم اعصابYafteh, Volume:27 Issue: 1, 2025, PP 67 -85BackgroundSustainable changes in psychotherapy are formed based on its underlying mechanisms. One of these key mechanisms is Memory Reconsolidation. This biological process involves updating and modifying memory information and is introduced as a fundamental mechanism of change in psychotherapy that leads to transformational changes. Therefore, the purpose of this research is to investigate memory reconsolidation as a fundamental mechanism of therapeutic change that bridges neuroscience and psychotherapy.
Materials and MethodsThis study is a narrative review derived from a PhD dissertation in psychology, in which articles related to the keywords (Memory Reconsolidation, psychotherapy, and therapeutic change) were collected through searches in the reputable scientific databases PubMed, ScienceDirect, PsycINFO, Scopus, and the Google Scholar search engine, within the time frame of 1985-2024. In total, 48 articles related to the topic and objectives of the research were extracted from the full-text English language articles.
ResultsStudies show that memory reconsolidation is a common mechanism of change among psychotherapy approaches, and through changes in memory structure, updating and modification of maladaptive memories, and ultimately cognitive-emotional reconstruction, it can cause lasting and profound changes in psychological problems and disorders.
ConclusionThe results showed that the convergence of neuroscience and psychotherapy through this mechanism is considered a new step in the development of more efficient treatment methods. Accordingly, focusing on memory reconsolidation in psychotherapy can significantly enhance the effectiveness of treatment and lead to profound and transformational changes in clients. Therefore, it is suggested that future research should focus on developing therapeutic models based on the mechanism of memory reconsolidation.
Keywords: Fundamental Mechanism Of Change, Memory Reconsolidation, Neuroscience, Psychotherapy, Transformational Changes -
بررسی اثر IC87201 به عنوان مهارکننده PSD95/nNOS بر کاهش عوارض قلبی پس از سکته مغزی در موش های صحراییمقدمه
ناهنجاری های الکتروکاردیوگرام و آریتمی های قلبی بعد از سکته مغزی بسیار رایج هستند. این مطالعه به بررسی اثر IC87201، یک مولکول موثر بر مسیر سیگنالینگ درون سلولی گیرنده NMDA، بر کاهش طولانی شدن فاصله QT، به عنوان شایع ترین تغییر الکتروکاردیوگرام پس از ایسکمی مغزی، در موش های صحرایی نر پرداخته است.
مواد و روش هادر این مطالعه، 15 سر موش صحرایی نر بالغ به طور تصادفی به سه گروه MCAO، MCAO+DXM (دکسترومتورفان هیدروبروماید مونوهیدرات، آنتاگونیست گیرنده NMDA)، و MCAO+IC87201 تقسیم شدند (5=n). دو ساعت پس از ایسکمی، در این سه گروه به ترتیب حلال، DXM و IC87201 به صورت داخل صفاقی تزریق شد. امتیاز رفتاری پیش از ایسکمی و چهار و چهل و هشت ساعت پس از آن با استفاده از آزمون نقص عصبی (NDS) سنجیده شد. تفاوت های آماری با استفاده از آنالیز واریانس با مقادیر تکراری (ANOVA repeated measures) بررسی شد (05/0<p).
یافته هافاصله QT به طور قابل توجهی پس از ایسکمی طولانی شد. تجویز IC87201 این فاصله را به طور معنی داری کاهش داد، در حالی که DXM چنین اثری نداشت. نسبت LF/HF، به عنوان شاخص تعادل سیستم عصبی خودمختار بر عملکرد قلبی، چهل و هشت ساعت پس از ایسکمی افزایش معنی دار یافت. این عدم تعادل چهل و هشت ساعت پس از تزریق هر دو ترکیب IC87201 و DXM بهبود یافت.
بحث و نتیجه گیرینتایج نشان می دهند که ایسکمی مغزی می تواند باعث افزایش فعالیت سیستم سمپاتیک و در پی آن طولانی شدن فاصله QT شود. تجویز IC87201 ممکن است با کاهش این فاصله در بهبود آن موثر باشد؛ بنابراین، IC87201 احتمالا می تواند به عنوان یک گزینه مناسب برای کاهش عوارض قلبی پس از سکته مغزی در نظر گرفته شود.
کلید واژگان: ایسکمی مغزی, طولانی شدن فاصله QT, IC87201, گیرنده NMDAYafteh, Volume:27 Issue: 1, 2025, PP 53 -66BackgroundAbnormalities of electrocardiogram and cardiac arrhythmias after stroke are very common. This study investigated the effect of IC87201, a molecule affecting the NMDA receptor intracellular signaling pathway, on reducing QT interval prolongation, as the most common electrocardiogram change after cerebral ischemia, in male rats.
Materials and MethodsIn this study, 15 male adult rats were randomly divided into three groups: MCAO, MCAO+DXM (dextromethorphan hydrobromide monohydrate, NMDA receptor antagonist), and MCAO+IC87201 (n=5 each). Two hours after ischemia, solvent, DXM, and IC87201 were injected intraperitoneally into these three groups, respectively. Pre-ischemia, four hours, and forty-eight hours post-ischemia neurological-behavioral scores were assessed using the neurological deficit score test. Statistical differences were measured using repeated measures analysis of variance (P<0.05).
ResultsQT interval significantly prolonged after ischemia. Administration of IC87201 significantly reduced this interval, whereas DXM did not have such an effect. The LF/HF ratio, as an index of autonomic nervous system balance on cardiac performance, significantly increased forty-eight hours after ischemia. This imbalance improved forty-eight hours after the injection of both IC87201 and DXM.
ConclusionThe results of this study indicated that cerebral ischemia could lead to an increase in sympathetic activity, which in turn causes prolonged QT interval. The administration of IC87201 may be effective in improving this condition by reducing the QT interval. Therefore, IC87201 may potentially be considered a suitable option for reducing cardiac complications following stroke.
Keywords: Cerebral Ischemia, IC8720, NMDA Receptor, QT Interval Prolongation -
مقدمه
مطالعه حاضر میزان شیوع انگل های روده ای در افرادی که به بیمارستان های تحت پوشش دانشگاه علوم پزشکی واقع در شهر زاهدان در سال های 1398 تا 1402 مراجعه کرده اند را مورد بررسی قرار داد.
مواد و روش هامطالعه حاضر توصیفی و به صورت مقطعی صورت گرفته است و شامل 5976 از افرادی هست که با علائم گوارشی به بیمارستان مراجعه کرده اند. برای توصیف داده ها از میانگین (انحراف معیار) و تعداد (درصد) برحسب گروه های مورد مطالعه استفاده گردید.
یافته هانتایج نشان داد که تعداد 1510 نفر از لحاظ آلودگی مثبت تشخیص داده شدند. بیشترین میزان شیوع آلودگی ها به تک یاخته های روده ای مربوط به ژیاردیا با 528 نفر (8/8 %) و کمترین میزان شیوع مربوط به اندولیماکس نانا با 10 نفر (16/0 %) بود. بیشترین میزان شیوع آلودگی ها به کرم های روده ای مربوط به انتروبیوس ورمیکولاریس با 64 نفر (07/1 %) و کمترین میزان شیوع مربوط به تریکیوریس تریکیورا 19 نفر (31/0 %) بود.
بحث و نتیجه گیریبا مقایسه درصد آلودگی در مطالعه اخیر و سایر مطالعات مشابه در سالیان گذشته شیوع بیماری های انگلی روده ای در تمام مناطق کشور به طور قابل ملاحظه ای کاهش یافته است. در عین حال میزان آلودگی به تک یاخته های روده ای به نحو قابل ملاحظه ای بیشتر از کرم های روده ای بود که می تواند به واسطه انتقال مستقیم و ساده تر آن ها نسبت به انتقال تخم ها و یا لاروهای کرمی باشد.
کلید واژگان: انگل های روده ای, زاهدان, ایرانYafteh, Volume:27 Issue: 1, 2025, PP 41 -52BackgroundThe present study investigated the prevalence of intestinal parasites in individuals who referred to hospitals affiliated with Zahedan University of Medical Sciences, Zahedan, from 2019 to 2023.
Materials and MethodsThe present descriptive study was conducted cross-sectionally and consisted of 5,976 individuals referring to the hospitals with gastrointestinal. To describe the data, mean (standard deviation) and number (percentage) were used according to the studied groups.
ResultsThe results of the study showed that 1,510 people were diagnosed positive. The highest rate of infection by intestinal protozoa was related to Giardia, affecting 528 people (8.8%), while the lowest rate of infection was related to Endolimax nana, affecting 10 people (0.16%). The highest prevalence rate of infections by intestinal worms was related to Entrobius vermicularis, with 64 people (1.07%), whereas the lowest prevalence rate was associated with Trichuris trichiura, with 19 cases (0.31%).
ConclusionThe comparison of the percentage of pollution in the current study with other relevant studies in the past years showed that the prevalence of intestinal parasitic diseases in this region has decreased significantly, similar to other regions of the country. At the same time, the rate of infection by intestinal protozoa is significantly higher than by intestinal worms. This issue can be due to their direct and easier transmission compared to the worm eggs or larvae.
Keywords: Intestinal Parasites, Iran, Zahedan -
مقدمه
مطالعه حاضر با هدف ارزیابی تاثیر والپوتریات (از گیاه سنبل الطیب) بر درد و التهاب در موش ها و تعیین مکانیسم های احتمالی ضد دردی و ضدالتهابی آن طراحی شد.
مواد و روش هادر این مطالعه برای بررسی اثر ضدالتهابی 40 سر موش نر به صورت تصادفی به 5- گروه تقسیم شدند. و در تست درد 56 سر موش نر به صورت تصادفی به 7 گروه (8 تایی) تقسیم شدند.تست التهاب: 1- گروه نرمال سالین، 2- گروه زایلن، 3- گروه دگزامتازون، 4 و 5- گروه هایی که ماده فعال والپوتریات را با دوزهای mg/kg 2/ 0 و 1/0 به صورت یک دوز واحد برای هر حیوان دریافت کردند. تست درد: 1- گروه سالین، 2- فرمالین، 3- گروه مورفین + فرمالین، 4 و5- گروه والپوتریات (mg/kg 2/ 0 و 1/0) +فرمالین، 6- گروه نالوکسان +عصاره (mg/kg 2/0) + فرمالین، 7- گروه نالوکسان + مورفین + فرمالین.
یافته هانتایج نشان داد که زمان واکنش درد در دوز 2/0 میلی گرم والپوتریات در مراحل درد حاد و مزمن در مقایسه با فرمالین به طور معنی داری کاهش یافت (001/0 <p). همچنین، ماده فعال والپوتریات اثر مهاری خود را بر التهاب ناشی از زایلن اعمال کرد که بهترین درصد مهار در دوز 2/0 میلی گرم/کیلوگرم و دگزامتازون با عصاره 2/0 میلی گرم/کیلوگرم مشاهده شد (01/0 <p).
بحث و نتیجه گیریبا توجه به نتایج، والپوتریات اثر ضد دردی نسبتا قوی داشت احتمالا مکانیسم اثر ضد دردی عصاره حداقل تا حدودی همانند مرفین بر پایه گیرنده های اوپیوئیدی است. در تست التهاب، عصاره همچون دگزامتازون قادر به مهار التهاب بود.
کلید واژگان: درد, التهاب, والپوتریات, رت, سنبل الطیبYafteh, Volume:27 Issue: 1, 2025, PP 28 -40BackgroundThe present study was designed to evaluate the effect of Valepotriate (from Valeriana officinalis) on pain and inflammation in rats and to determine its possible analgesic and inflammatory mechanisms.
Materials and MethodsThe present study was conducted with the objective of investigating the anti-inflammatory effect. To this end, 40 male rats were randomly divided into five groups. In the pain test, 56 male rats were randomly divided into seven groups (n=8 each). Inflammation test: 1- Normal saline group, 2- Xylene group, 3- Dexamethasone group, 4 and 5- Groups that received the active ingredient Valepotriate at doses of 0.2 and 0.1 mg/kg as a single dose for each animal. Pain test: 1- Saline group, 2- Formalin, 3- Morphine + Formalin group, 4-5- Valepotriate group (0.2 and 0.1 mg/kg) + Formalin, 6- Naloxone + Extract group (0.2 mg/kg) + Formalin, 7- Naloxone+ Morphine + Formalin group
ResultsThe results showed a significant decrease in pain response time at 0.2 doses of Valepotriate in acute and chronic pain phases compared to Formalin (P<0.001). Valepotriate active ingredient also exerted its inhibitory effect on xylene-induced inflammation, with the best inhibition percentage observed for 0.2 mg/kg dose and dexamethasone with extract at 0.2 mg/kg (P<0.01).
ConclusionAccording to the results, Valepotriate has a relatively strong analgesic effect. It is likely that the mechanism of analgesic action of the extract is at least relatively similar to that of morphine based on opioid receptors. In the inflammation test, the extract was able to inhibit inflammation in a way similar to dexamethasone.
Keywords: Inflammation, Pain, Rat, Valepotriate, Valeriana Officinalis -
مقدمه
امروزه می توان در روش های ارائه خدمات مراقبت بهداشتی، به ویژه پزشکی از راه دور، از قابلیت های ارائه شده توسط متاورس بهره مند گردید. این امر مستلزم ارزیابی زود هنگام مزایا و چالش های بالقوه متاورس در زمینه پزشکی از راه دور قبل از تحقق پذیرش بالینی است. هدف از انجام پژوهش حاضر شناسایی اهداف، پیامدها و موانع استفاده از متاورس در حوزه پزشکی از راه دور است.
مواد و روش هادر این بررسی سیستماتیک، مقالات منتشر شده در پایگاه های اطلاعاتی آنلاین (PubMed، Scopus و Web of Science) تا خرداد 1403 (بدون محدودیت زمانی) با استفاده از کلمات کلیدی مرتبط ("Metaverse" و "Telemedicine") به زبان انگلیسی جستجو شده اند.
یافته هااز مجموع مقالات وارد شده به مطالعه بیشتر مطالعات (75%) در سال 2023 و کره جنوبی دارای بیشترین مطالعات (25%) در این زمینه بود. قابلیت ها و پیامدهای اصلی استفاده از متاورس در پزشکی از راه دور شامل افزایش دسترسی به خدمات مراقبت سلامت، افزایش میزان امنیت، ایجاد حس اطمینان به کاربران، کاهش هزینه ها و مدیریت زمان بود. خطرات مربوط به امنیت و محرمانگی، تکنولوژی های مورد نیاز، دانش استفاده و هزینه بر بود نیز از چالش ها و موانع اجرای متاورس در پزشکی از راه دور است.
بحث و نتیجه گیریمتاورس یک بستر مناسب برای پزشکی از راه دور است که امکان دسترسی به اطلاعات پزشکی و علمی را فراهم می کند. با وجود مزایا و پیامدهای مثبت این بستر در ارائه سریع و با کیفیت خدمات درمانی که موجب توجه گسترده ای به آن می شود چالش هایی وجود دارد که باید در رفع آن ها اقدامات لازم صورت پذیرد.
کلید واژگان: متاورس, پزشکی از راه دور, سلامت از راه دور, موانع, مروری نظام مندYafteh, Volume:27 Issue: 1, 2025, PP 14 -27BackgroundToday, we can benefit from the capabilities provided by Metaverse in the methods of providing healthcare services, especially telemedicine. This requires an early assessment of the potential benefits and challenges of Metaverse in the field of telemedicine before clinical adoption is realized. The purpose of this research is to identify the goals, consequences, and obstacles of using Metaverse in telemedicine.
Materials and MethodsIn this systematic review, we searched the articles published in online databases (PubMed, Scopus, and Web of Science) until June 2024 (without time limitation) using relevant keywords ("Metaverse" and "Telemedicine") in English. Exclusion criteria included articles that did not focus on this topic.
ResultsOf all the articles included in the study, most of the studies (75%) were conducted in 2023, and South Korea accounted for the highest number of studies (25%) in this field. The main capabilities and consequences of using Metaverse in telemedicine included increasing access to healthcare services, increasing the level of security, creating a sense of confidence for users, reducing costs, and managing time. Risks related to security and confidentiality, required technologies, knowledge of use, and cost are also challenges and obstacles to implementing Metaverse in telemedicine.
ConclusionMetaverse is a suitable platform for telemedicine that provides access to medical and scientific information. Despite the advantages and positive consequences of this platform in providing fast and quality medical services, which causes widespread attention, there are challenges in its implementation that need to be solved by necessary measures.
Keywords: Metaverse, Obstacles, Systematic Review, Telehealth, Telemedicine -
مقدمه
نقش پیش بینی کننده شاخص های خونی میانگین حجم پلاکت (MPV) و پهنای توزیع گلبول های قرمز (RDW) در بیماری های قلبی_عروقی ثابت شده است. تمرینات تناوبی با شدت بالا (HIIT) یک روش پایدار و موثر برای بهبود آمادگی قلبی_تنفسی است؛ لذا هدف از پژوهش حاضر بررسی تاثیر 8 هفته HIIT بر MPV ، RDWدر زنان غیرفعال دارای وزن طبیعی و چاق بود.
مواد و روش هادر تحقیق نیمه تجربی از میان جامعه زنان چاق و با وزن طبیعی سالم غیرفعال در دامنه سنی 30 تا 45 سال، 24 نفر انتخاب و در دو گروه آزمایشی 12 نفری (با وزن طبیعی و چاق) قرار گرفتند. هر دو گروه به مدت 8 هفته در یک پروتکل HIIT ایستگاهی، سه جلسه در هفته با شدت 90%Hrmax شرکت کردند. خونگیری در پیش و پس آزمون پس از 12 ساعت ناشتایی، 48 ساعت پس از آخرین جلسه تمرینی انجام شد. از آزمون آماری تحلیل کوواریانس (ANCOVA) برای تحلیل متغیرها در سطح معناداری 05/0> P استفاده گردید.
یافته هانتایج این مطالعه نشان داد که بین دو گروه چاق و با وزن طبیعی از نظر متوسط کاهش MPV (045/0=P)، متوسط کاهش RDW (001/0=P) و متوسط افزایش HDL (045/0=P) اختلاف آماری معناداری وجود دارد.
بحث و نتیجه گیریتمرینات با شدت بالا احتمالا باعث تعدیل شاخص MPV و دیگر شاخص های خطر بیماری های قلبی_عروقی مانند شاخص توده بدنی بالا و درصد چربی بدن بالا در زنان میان سال شده و به عنوان یک روش غیردارویی کارآمد، ارزان و در دسترس برای کاهش خطر بیماری های قلبی_عروقی پیشنهاد گردد.
کلید واژگان: تمرینات تناوبی با شدت بالا, پهنای توزیع گلبول قرمز, میانگین حجم پلاکت, چاقیYafteh, Volume:27 Issue: 1, 2025, PP 1 -13BackgroundThe predictive role of mean platelet volume (MPV) and red cell distribution width (RDW) in cardiovascular diseases has been proven. High-intensity interval training (HIIT) is a sustainable and effective method for improving cardiorespiratory fitness. Therefore, the present study aimed to investigate the effect of eight weeks of HIIT on MPV and RDW in inactive, normal-weight, and obese women.
Materials and MethodsIn this semi-experimental research, 24 participants were voluntarily selected from a population of inactive, healthy, obese women and healthy women of normal weight aged 30 to 45 years. They were divided into two experimental groups, each consisting of 12 participants (normal-weight and obese). Both groups were in a circuit HIIT protocol for eight weeks, three sessions per week with an intensity of 90% HRmax for related exercises. Blood sampling was taken on two occasions: once before and once after a 12-hour fasting period and again 48 hours after the last training session. The analysis of covariance (ANCOVA) statistical test was employed to analyze variables at a significance level of P < 0.05.
ResultsThe results indicated that there was a statistically significant difference between the two obese and normal weight groups in the average decreases in MPV (P=0.045), red blood cell distribution width (RDW) (P=0.001), and high-density lipoprotein (HDL) (P=0.045).
ConclusionHigh-intensity exercise may modulate MPV and other cardiovascular disease risk factors, such as high body mass index and high body fat percentage in middle-aged women, suggesting an effective, inexpensive, and accessible non-pharmacological method for reducing the risk of cardiovascular diseases.
Keywords: High-Intensity Interval Training (HIIT), Red Blood Cell Distribution Width (RDW), Mean Platelet Volume, Obesity -
Researchers and healthcare providers can advance the field of phosphorus control, ultimately improving patient outcomes and enhancing the overall quality of care for ESKD patients.
Keywords: Proton Pump Inhibitors, Phosphorus, Hemodialysis -
Background
Percutaneous Trans hepatic biliary drainage (PTBD) is a successful palliative treatment for malignant obstructive jaundice. Despite the past that PTBD complications occur more frequently. Currently, with the help of an ultrasound guide, these side effects and possibility of adjacent organ damages have decreased interestingly. One of the rare complications of this procedure is acute pancreatitis.
Case PresentationWe discuss an uncommon case of acute pancreatitis following PTBD in an elderly woman who presented to the hospital with jaundice and anorexia. Conservative therapy without decatheterization was the treatment of choice in our patient. Eventually after receiving conservative therapy for her pancreatitis, she was discharged from the hospital in good general condition and she has not experienced any episodes of abdominal pain again.
ConclusionAcute pancreatitis is one of the causes of sepsis during PTBD catheterization. Early management of this complication after PTBD can decrease morbidity and mortality of the patients.
Keywords: Acute Pancreatitis (AP), Malignant Obstructive Jaundice (MOJ), Percutaneous Trans-Hepatic Biliary Drainage (PTBD), Sepsis -
Background
Among mesenchymal tumors arising in the gastrointestinal tract, gastrointestinal stromal tumors are the most common. GISTs that do not have metastatic spread are treated surgically. Our case report aims to describe a newer & less invasive approach for resection of GISTs & early gastrointestinal tumors.
Case PresentationAn Iranian woman 41 years old with stomach stromal tumor is presented. Her complaint was minor epigastric discomfort. Tumor en-bloc resection was performed using a hybrid endoscopic-laparoscopic approach. She was doing very well & discharged the day after the operation.
ConclusionGISTs and early gastrointestinal tumors can be treated with hybrid endoscopic and laparoscopic en-bloc resections instead of invasive surgery.
Keywords: Gastrointestinal Stromal Tumors, Endoscopy, Laparoscopy, Neoplasms -
Background
Renal Cell Carcinoma is one of the most common malignancies worldwide. To date, multiple attempts had been made to accurately diagnose it and predict its behavior. One of the most intriguing biomarkers that have been assessed since 90s, is galectin-3. This study aimed to increase the prior knowledge of galectin-3 expression association with patient's clinicopathologic factors.
MethodsIn this single-center cross-sectional study, 71 patient samples from hospital archive were assessed for galectin-3 expression by immunohistochemistry assay. Pathologic slides were evaluated for histologic subtype, grade, stage, tumor size, presence of necrosis, and invasion of the renal vein. By adding cytoplasmic staining score to the color intensity score, a final score was recorded as galectin-3 positivity score.
Results88 pathological slides of patients with confirmed RCC were screened and 71 were finally assessed. The mean age of the patients was 58.52 years (lowest 30 and highest 87). 67.6% were males and 32.4% were females. 68% of tumors were clear cell carcinoma, and only one oncocytoma was present. All 9 chromophobe cases showed a strong galectin-3 expression. Except for female gender (47.8% vs 18.8% in men; P=0.01), no statistically significant association was found between patient age, tumor grade, tumor size, tumor stage, and renal vein invasion with the level of galectin-3 expression.
ConclusionConsidering the contradictory findings between this study and other similar studies, it can be concluded that the physiological role of galectins is very complex and the need for larger and more comprehensive evaluations is felt.
Keywords: Galectin 3, Kidney Neoplasms, Galectins -
Background
Anemia in pregnancy is associated with psychiatric symptoms and poor psychiatric symptoms, this study investigates the 6-month trends of anxiety and birth outcomes. Considering the controversies surrounding the impact of anemia on psychiatric symptoms, this study investigates the 6-month trends of anxiety and depression in anemic pregnant women with threatened abortion (TA).
MethodsA case-control retrospective cohort study conducted among 282 participants who enrolled in a registry of pregnant women with TA in Babol city from December 2022 to October 2023. Fifty individuals with anemia (hemoglobin < 11 g/dL) who were matched with 50 without anemia based on age, pregnancies, education, and gestational age, were included. The BSI-18 (Brief Symptom Inventory) was used to assess depression, anxiety, and psychological distress at the beginning, three and six-month follow-ups.
ResultsThe prevalence of anemia among women diagnosed with TA was found to be 17.7%. At the beginning, compared to normal individuals, anemic women had higher rates of depression (32% vs. 14%), anxiety (34% vs. 22%), and psychological distress (66% vs. 48%). Moreover, at 3- and 6-month follow-ups, the frequency of psychiatric symptoms in anemic women was significantly higher. The Generalized Estimating Equations model showed that although both groups had a decreasing trend of frequency anemic women experience a slower rate of decrease in psychiatric symptoms compared to non-anemic women.
ConclusionAnemia in women with TA is associated with high rates of depression, anxiety, and psychological distress, as well as a slow recovery rate.
Keywords: Anemia, Threatened Abortion, Depression, Anxiety, Psychological Distress -
Background
The aim of this study was to investigate the diagnostic accuracy of mean platelet volume (MPV) in predicting SBP in cirrhotic patients.
MethodsThis was an observational, analytical, and retrospective study conducted on cirrhotic patients with abdominal ascites referred to the emergency department (ED) over a 1-year period. The cirrhotic patients with ascites were divided into two groups with or without SBP. The diagnostic accuracy of MPV for detecting SBP was measured and compared with the analysis of the ascites fluid obtained by paracentesis as a gold standard procedure in the absence of any secondary causes of peritonitis. The required data were documented in a checklist.
ResultsA total of 252 patients, 126 with SBP and 126 without SBP, were included in the study. The mean MPV in these patients was 8.36 ± 0.92 fL. Patients with SBP had a significantly longer duration of cirrhosis, more severe fever and abdominal pain, and higher ascites WBC and PMN counts and higher mean MPV (p<001). At the most appropriate cut-off point (i.e., 8.3 fL), MPV provided the sensitivity, specificity, positive predictive value, negative predictive value, and the diagnostic accuracy of 69.84%, 53.97%, 60.27%, 64.15%, and 61.90%, respectively, for the diagnosis of SBP. The receiver operating characteristic (ROC) curve showed that MPV had an acceptable diagnostic accuracy (AUC = 0.677).
ConclusionMean platelet volume, as a non-invasive, simple, and accessible laboratory parameter, with acceptable diagnostic accuracy in cirrhotic patients with ascites may have a predictive role in the diagnosis of SBP.
Keywords: Ascites, Cirrhosis, Mean Platelet Volume, Spontaneous Bacterial Peritonitis -
Background
Drugs used in chemotherapy specifically target and kill the cancer cells during the breast cancer treatment. However, the majority of anti-cancer therapies are non-specific, which will harm the innate cells. Our research work assessed the impact of chemotherapy with adriamycin/cytoxan (AC) on the influence of antioxidant enzymes and hematopathological profiles in the diagnosis and prognosis of breast cancer treated with chemotherapy.
Methods40 breast cancer patients treated with AC chemotherapy (Adriamycin 60 mg/m2, Cytoxan 600 mg/m2) between July 2020 and March 2021 are part of this prospective study. The first sample was taken prior to chemotherapy, the second after the intervention's three cycles, and the third after the intervention's last cycle. Spectrophotometric technique was used to evaluate the amounts of antioxidant enzymes in serum samples. Patients’ demographic variables, clinical features, biochemical andhematogical parameters data were noted. The data was compared before and after treatment using the Paired-t test.
Results55% of the patients were detected with carcinoma on left breast and majority was in Grade 3 clinical stage 37.5%. Most of the patients express estrogen and progesterone receptors 72.5%. Our findings demonstrated that a significant decrease in the mean values of antioxidant enzymes MDA, NO, TAS, CAT, GPx, GR, SOD and GST along with hematological parameters after three cycles of AC treatment in breast carcinoma individuals. The p-value is < 0.05.
ConclusionOur research demonstrates that the body's oxidant/antioxidant system, particularly reduction levels and antioxidant enzyme activity, is drastically altered by AC chemotherapy in breast carcinoma individuals.
Keywords: Breast Carcinoma, Antioxidants, AC Chemotherapy, Haematological Parameters -
Background
Anti-CD20 are among the high-efficacy DMTs commonly used in treating multiple sclerosis (MS). Long-term safety data on anti-CD20s are limited. There is convincing evidence of hypogammaglobulinemia in the long-term use of anti-CD20s, raising the likelihood of infection. Accordingly, there is an unmet need for de-escalation therapy in stable patients to reduce adverse events. Herein we aimed to describe our experience with ten relapse-remitting MS (RRMS) patients who were switched from anti-CD20s to the low-moderate efficacy DMTs.
MethodsThis cohort study was conducted between January 2020 and February 2023 at the MS Research Center of Sina Hospital, Tehran, Iran, to identify the characteristics of RRMS patients who were switched from anti-CD20s to low-moderate efficacy DMTs within 12 months of the last anti-CD20 infusion. Patients were then followed up to 18 months after de-escalation.
ResultsAll patients were females, with a mean age of 39.3±2.53-year-old and a mean disease duration of 9.7±1.39 years. After a mean of 2.95±0.44 years of treatment with anti-CD20s, patients were de-escalated to INF-β1a (n=5), dimethyl fumarate (DMF) (n=3), fingolimod (n=1), and teriflunomide (n=1). The main reason for anti-CD20 discontinuation was an infectious concern. Within 18 months of follow-up, no patient developed clinical or MRI activity. Additionally, we did not find evidence of disability progression in any patients (P=0.13).
ConclusionThe present study is a real-world experience of de-escalating anti-CD20s to low-moderate efficacy DMTs, which suggests that at short-term follow-up, de-escalating anti-CD20s appeared to be effective and safe in RRMS patients.
Keywords: Anti-CD20, B Cell Depleting Monoclonal Antibody, De-Escalation, Relapse Remitting Multiple Sclerosis, RRMS -
Background
The diagnosis of ulcerative colitis (UC) today is limited to a small number of biomarkers. Trimethylamine-N-oxide (TMAO) is the product of reactions resulting from the degradation of dietary-free choline, phosphatidylcholine, and carnitine metabolism by the intestinal microbiota. Earlier studies showed his involvement in the pathogenesis of UC. To study the association of TMAO with clinical, laboratory, and endoscopic indicators of UC activity.
Methodsan observational cross-sectional comparative study was conducted based on the NCJSC “KMU” clinic, Karaganda, Kazakhstan. High-performance liquid chromatography measured TMAO concentration in 63 patients with UC (age Me 37 (30-52) and 38 healthy individuals (age Me 38 (28.5-49.5).
ResultsMedian TMAO level in patients with UC-0.286 μmol/l was significantly lower than in the control group Me 0.646 μmol/l (p<0.0001). TMAO had significant differences in groups with clinically active and inactive colitis (P=0.003). TMAO correlated with disease activity by Montreal scale (r=-0.389, P=0.002) and severity of attack by Truelove-Witts (r=-0.301, P=0.027 respectively), patient’s age (r=0.377, P=0.003), stool frequency (r=-0.427, P=0.001); laboratory parameters: WBC (r=-0.31, P=0.042), blood albumin (r=0.379, P=0.002) and fecal calprotectin (r=-0.314, P=0.022). TMAO did not differ between groups divided by the extent of the pathological process and endoscopic activity.
Conclusionin patients with UC, TMAO levels decrease compared with healthy individuals and differences in groups depend on the disease activity. These results give reason to consider changes in TMAO levels as a potential marker of UC and the severity of its course.
Keywords: IBD, Inflammatory Bowel Diseases, Ulcerative Colitis, Trimethylamine N-Oxide, TMAO, Biomarkers -
Background
Type 2 diabetes mellitus (T2DM), the most prevalent metabolic disorder worldwide, has genetic, epigenetic, and environmental contributors. Among them, circulating microRNAs (miRNAs/miRs) have attracted considerable attention. This study aimed to investigate the regulatory role of miR-103 in T2DM development.
MethodsThe miR-103 expression was evaluated in 33 participants with T2DM compared with 38 healthy controls using quantitative real-time polymerase chain reaction (q-RT PCR). Fasting blood glucose (FBS), fasting insulin (Fin), hemoglobin A1c (HbA1c), triglycerides (TG), and cholesterol (Chol) were also determined in serum. Basal insulin resistance and sensitivity were determined using the homeostasis model assessment insulin resistance (HOMA-IR) and quantitative insulin sensitivity check index (QUICKI), respectively.
ResultsThere was a significant decrease in miR-103 levels in patients with T2DM (p<0.002). Serum miR-103 expression levels showed a strong correlation with age, FBS, HbA1c, TG, Chol levels, and HOMA-IR and QUICKI indices.
ConclusionThe downregulation of miR-103 in T2DM patients suggests the diagnostic potential of miR-103 evaluation in conjunction with other diagnostic approaches.
Keywords: Micrornas, Mir-103, Type 2 Diabetes Mellitus, Insulin Resistance -
Background
Oral candidiasis is the most common infection of oral mucosa caused by Candida albicans. A common predisposing factor for candidiasis is immune system suppression in specific diseases such as AIDS and various cancers. This study aimed to analyze the effect of Kefir probiotic products on the count of C. Albicans in the saliva of chemotherapy patients.
MethodsIn this single-blinded clinical trial, 50 patients were selected who have signed informed consent forms. Patients aged 20-60 years with colon or breast cancer who received the same chemotherapy regimen were included and those with a history of radiation therapy, underlying diseases, using antibiotics, anti-fungal and GCSF medicines were excluded. Matched patients in test and control groups received 100 ccs Kefir probiotic and mineral water, respectively at a specific daily time for five weeks. Blood and saliva samples were collected in five steps. Data were analyzed using SPSS Version 21 and the significance level was set at p< 0.05.
ResultsIn saliva samples, the count of C. Albicans in the test group dropped significantly (p<0.05), while there were no significant differences between test and control groups in blood samples (p>0.05). Comparing the follow-up sessions, in the test groups, WBC and Neutrophil, and in the control groups, WBC count and hematocrit showed significant differences (p< 0.05).
ConclusionBased on the results, using probiotic products daily over a short-term period drops the count of oral C. Albicans. Therefore, Kefir probiotic products can be used as an additional treatment for chemotherapy patients.
Keywords: Candida Albicans, Kefir, Chemotherapy, Probiotic, Saliva -
Background
Acute pulmonary embolism can quickly cause hemodynamic collapse and death. Recent studies have shown that different characteristics of electrocardiogram (ECG) can be used to predict the prognosis of patients. This study aimed to investigate the relative frequency of fragmented QRS in the ECG of patients with pulmonary embolism and its prognostic value.
MethodsThis study was conducted retrospectively. The files of 106 patients hospitalized with a diagnosis of pulmonary embolism from January 2016 to the end of March 2020 were selected and reviewed. The findings of the ECG, including the ST elevation in V1-V4 leads with and without T invention, right axis deviation, right bundle branch block (RBBB), PR, QRS, QTc intervals, type of treatment (thrombolysis or embolectomy), cardiogenic shock, mortality were collected. Finally, the data were recorded and analyzed in SPSS software Version 16.
ResultsHypertension, dyslipidemia, and diabetes mellitus were the most frequent risk factors among the patients. The relative frequency of fragmented QRS, at least in one lead, was 26.2%. The use of thrombolysis, mechanical ventilation, embolectomy, cardiogenic shock, and in-hospital death was significantly higher among patients who had fragmented QRS (P<0.001). CTNI was significantly higher in patients with fragmented QRS (P=0.001). In patients with fragmented QRS large vessels, involvement was significantly higher.
ConclusionThis study showed that the presence of fragmented QRS in the ECG of acute embolism patients has a significant relationship with cardiogenic shock, hospital mortality, and the need for advanced treatment methods such as intubation, embolectomy, and the use of thrombolysis.
Keywords: Acute Pulmonary Embolism, Fragmented QRS, ECG, Prognosis -
Background
Diabetes mellitus (DM) is highly consequential to global health among chronic diseases. Due to a limited researches that have examined relationships between liver enzymes and DM, this study aimed to investigate the link between elevated liver enzymes and diabetes among Prospective Epidemiological Research Studies in Iran (PERSIAN) Guilan cohort study (PGCS) population.
MethodsThis cross-sectional study was conducted on 10519 individuals. The demographic and clinical information of the participants was recorded. The changes in alanine aminotransferases (ALT) and aspartate aminotransferases (AST), alkaline phosphatase (ALP), and γ-glutamyltransferase (GGT) were evaluated. IBM SPSS Version 21 was used to analyze the data, with a significance level < 0.05.
ResultsThe frequency of diabetes was 24.1% and was more prevalent in women than men (27.4% vs. 20.2%, p< 0.001). After removing all confederates, patients with elevated ALT, AST, GGT, and ALP levels were 1.27, 1.27, 1.52, and 1.46 times more likely to have diabetes, respectively. The likelihood of developing diabetes rose in correlation with the number of elevated liver enzymes, up to almost 1.77-fold among subjects with three or four increased liver enzymes.
ConclusionPatients diagnosed with diabetes exhibited significantly increased levels of liver enzymes compared to those without diabetes. Also, impairment of three or four liver enzymes demonstrated a positive correlation with an elevated likelihood of DM. This indicates the importance of considering the liver status in the management of the DM population.
Keywords: Diabetes, Liver Enzymes, Dyslipidemia, Prevalence
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