Histopathological Features of the Steatohepatitic Variant of Hepatocellular Carcinoma and Its Relationship with Fatty Liver Disease

Hepatocellular carcinoma (HCC) is the most common primary malignant tumor of the liver in adults. Steatohepatitic HCC (SH-HCC) is a recently described, rarer variant of HCC and is associated with nonalcoholic fatty liver disease (NAFLD). The relationship between fatty liver disease and/or steatohepatitis and SH-HCC is now known. This subtype can be confused with lipid-containing nodules (such as cirrhotic nodules, regenerative nodules, focal nodular hyperplasia) clinically, radiologically and histopathologically. Here, the histopathological features of SH-HCC, its relationship with fatty liver disease and briefly its clinical features will be discussed. In addition, histopathological features of this specific variant, immunohistochemical staining of the tumor and diagnostic difficulties in tru-cut biopsies will also be discussed. Actually, I think this article will raise clinicopathological awareness about this rare variant

The history and current status of forensic pathology

Forensic pathology is currently one of the basic touchstones of forensic science in criminal investigations. Together with developing technology and science, the importance of forensic pathology in resolving judicial events is increasing. The aim of this paper was to review the historical development of forensic pathology and the current status. Since ancient times, determining the cause of death has been of the greatest importance for the determination of the punishment to be given for crimes committed. There is known to have been an autopsy to determine the cause of death following the assassination of Roman Emperor Julius Caesar (44 BC). Developments over time in medicine also led to developments in autopsies. Pathology became a separate science with developments in the knowledge of anatomy starting in the 16th century and the invention of the microscope in the 17th century, and thus the normal anatomy, histology and pathology of human tissue came to be better understood. The first pathological anatomy autopsy is known to have been performed in 1286. The importance of forensic medicine and pathology in the process of explaining the cause of death and resolving judicial events has been well understood for hundred of years and has rendered the existence of forensic pathology imperative. Thus, in current international autopsy protocols, pathological examinations have become an indispensable part of autopsies. Despite the different nomenclature in different countries, such as forensic medicine specialist or forensic pathologist, a multidisciplinary approach is necessary in all forensic autopsies. Autopsy procedures are performed by forensic medicine specialists in Europe, by forensic pathologists in the USA and some other countries, and by forensic medicine specialists and forensic pathologists together in Turkey. [Med-Science 2019; 8(2.000): 480-1

Short-term effect of topical brinzolamide-timolol fixed combination on ocular surface of glaucoma patients

AIM: To evaluate the short-term effect of the fixed combination of brinzolamide-timolol on the ocular surface in glaucoma patients.METHODS: This is a prospective study of 23 eyes of 23 patients with newly diagnosed glaucoma. Schirmer I test, tear break-up time (BUT) measurement, conjunctival impression cytology and central corneal thickness (CCT) measurements were performed in one of the eyes of each patients before and 4 weeks after brinzolamide-timolol fixed combination therapy. All patients were asked to answer the OSDI questionnaire form about the ocular surface symptoms at baseline and at 1 week and 4 weeks follow-up visits.RESULTS: After brinzolamide-timolol fixed combination theraphy Schirmer I, BUT and CCT values decreased but the only statistically significant decrease was seen in BUT test (P=0.03). OSDI scores increased during the follow-up but this increase was not statistically significant (P=0.22, P=0.42 respectively). Impression cytology findings ranged from 0.78±0.42 to 0.95±0.36 according to the Nelson classification. There was no statistically significant difference between baseline and 4 weeks follow up in impression cytology grades (P=0.15).CONCLUSION: The results of our study indicate that short-term use of brinzolamide-timolol fixed combination theraphy does not have a profound effect on ocular surface except BUT values

Assessment of mucosal changes associated with nasal splint in a rabbit model

INTRODUCTION: There is no consensus on duration of the nasal splint after nasal septum surgeries. The pressure of nasal splint on the mucosa may cause tissue necrosis and nasal septum perforation.OBJECTIVES: To investigate the histopathological changes of the nasal mucosa caused by nasal splints in a rabbit model.METHODS: No splint was used in group A. Bilateral silicone nasal splints were placed for five, ten, and 15 days in groups B, C, and D, respectively. Biopsy of the nasal mucosa was performed after removal of splint. Histopathologic evaluations were performed. The severity and depth of the inflammation were scored.RESULTS: Group A had a normal histological appearance. Comparison of the results of groups B, C, and D with group A demonstrated statistically significant differences with regards to the severity of histopathological findings. There was no statistically significant difference between groups B and C. There were statistically significant differences between the groups B and D, and also between groups C and D.CONCLUSIONS: Longer duration of nasal splint had a higher risk for septal perforation. Therefore, removal of the splint as soon as possible may be helpful for preventing potential perforations

Effects of montelukast on burn wound healing in a rat model

Purpose: Montelukast, a selective cysteinyl leukotriene D4-receptor antagonist, is used in the treatment of asthma. In a rat model, our aim was to investigate the effects of montelukast, alone or in combination with topical antibiotics, on local burn wound healing. Methods: Rats were randomly allocated to four groups after local burn development: Group 1; rats were left to secondary healing without treatment, Group 2; a dose of 10 mg/kg montelukast was given by gastric gavage once a day for 10 days, Group 3; rats were treated with topical pomade (bacitracin neomycin sulphate), and Group 4; rats were treat with a combination of topical antibiotic and montelukast (10 mg/kg were given by gastric gavage once a day for 10 days). Skin biopsies were taken on days 3, 10, 14, and 20 relative to burn induction. Results: Reepithelialization in the pomade and montelukast+pomade groups on the 10th day was significantly greater, in comparison with control and montelukast groups (p < 0.05). For the montelukast group, edema (on the 14th day) and angiogenesis, fibroblast proliferation, edema and macrophage infiltration (on the 20th day) were statistically improved in comparison with the control group (p < 0.05). For the montelukast+pomade group, angiogenesis, fibroblast proliferation and macrophage infiltration (on the 10th day), and angiogenesis, fibroblast proliferation, edema and macrophage infiltration (on the 14th and 20th days) were statistically improved in comparison with the control group (p < 0.05). Conclusion: In conclusion, montelukast was effective on burn wound healing. Moreover, the effect was amplified when combined with topical antibiotics applied in the early stage of burn wound healing

Histopathological effects of fibrin glue on penile fracture in a rat model

Purpose: To evaluate both histopathological effects and potential clinical application of fibrin glue on the penile cavernosal tissue. Methods: Experimental penile fracture was formed by incising from the proximal dorsal side of the penis in 32 Wistar Albino rats. The rats were randomly assigned to four main groups of eight animals each. In the control group, the incision was not repaired and it was left to secondary healing. In the primary repair group, the incision was primarily repaired. In the fibrin glue group, glue was applied only to the incision. In the final group, fibrin glue was applied to the incision following primary repair. Three weeks later, penectomy tissue was examined histopathologically. Results: When the control group was compared with primary repair+fibrin glue group, the differences in cavernous tissue healing with fibrosis and inflammation were statistically significant (p = 0.04 and 0.01, respectively). The primary repair+fibrin glue group, showed the best cavernous healing with fibrosis observed in only one rat. . There was no significant difference between the control group and the other groups according to cavernous tissue healing with fibrosis and inflammation (p = 0.11 and 0.12). Hyperemia was observed in the all groups of rats. Conclusions: Fibrin glue can be used in cavernoseal surgeries due to its adhesive and potentially anti-inflammatory features

Ankaferd Blood Stopper Is More Effective Than Adrenaline Plus Lidocaine And Gelatin Foam In The Treatment Of Epistaxis In Rabbits

BACKGROUND: Epistaxis is an important emergency that can sometimes be life threatening without effective intervention. Persistent and recurrent bleeding can lead to aspiration, hypotension, hypoxia, or even severe and mortal cardiovascular complications. Providing prompt hemostasis is important, and the hemostatic method used must be easily and locally applicable, efficient, and inexpensive. OBJECTIVE: The aim of this study was to assess the hemostatic efficacy of Ankaferd Blood Stopper (ABS) in an experimental epistaxis model and to determine the histopathologic alterations with topical ABS application. METHODS: Twenty-eight New Zealand rabbits were evaluated in 4 study groups. Topical ABS, gelatin foam (GF), adrenalin + lidocaine (AL), and serum physiologic as negative control (C) were applied to the animals for controlling epistaxis. The bleeding was generated with a standard mucosal incision in all groups. Cotton pieces soaked with ABS, AL, C, and GF were applied to the nasal bleeding area. Time of hemostasis was recorded. Tissue samples were obtained after hemostasis for histopathologic examination. The samples were stained with hematoxylin and eosin (HE) and phosphotungstic acid hematoxylin (PTAH) and were examined under a light microscope. In this experimental study, the observers were blind to ABS, AL, and C but not to GF, because of its solid nature. RESULTS: Median durations required for hemostasis in ABS, AL, GF, and C groups were recorded as 30, 90, 90, and 210 seconds, respectively. The time until termination of bleeding in the ABS group was significantly shorter than that in the AL, GF, and C groups (P = 0.002, P = 0.002, and P = 0.001, respectively). On histopathologic evaluation, after staining with HE, minimal fibrin at the incision edges and a few extravasated erythrocytes were observed in the C, AL, and GF groups. In the ABS group, a dark amorphous material surrounded by fibrin, filling the space between the edges of incisions, was noticed. Fibrin was determined in the C, GF, and AL groups with PTAH stain and in the positive control group. In the ABS group, it was observed that the amorphous substance surrounded by fibrin seen in the HE sections was not stained with PTAH. CONCLUSIONS: Topical nasal ABS application controlled epistaxis faster than C, GF, and AL in this animal bleeding model. The bleeding model used here might fail to replicate the type of injury that would be likely to result in life-threatening bleeding in humans, which should be considered a limitation of the present study. The histopathologic findings in the nasal incision area suggest that ABS might affect global hemostasis by inducing a unique protein network formation, potentially representing a different mechanism of action among conventional antihemorrhagic applications. (Curr Ther Res Clin Exp. 2011;72:185-194) (C) 2011 Elsevier HS Journals, Inc. All rights reserved.WoSScopu

Cardiovascular effects of JWH-018 from synthetic cannabinoids [Sentetik kannabinoidlerden JWH-018in kardiyovaskuler etkileri]

The content of synthetic cannabinoids (SC) which are known in Europe as Spice, in the U.S.A. as K2, and in Turkey as Bonsai or Jamaica is not standard. Also SC are known to contain approximately 400 chemical compounds which vary from country to country. SC mimics the effect of &#916;9-tetrahydrocannabinol (THC) which is the major effective content of Cannabis or Marijuana by cannabinoid-1 (CB1) and cannabinoid-2 (CB2) receptors in the body cell. Although the new SC are synthesized and the number of new variants is increased in every day; JWH-018 among these variants exerts full agonist effect on both CB1 and CB2 receptors also it has a short-term effect as 2 hours. For this reason, JWH-018 is the most commonly used as SC. There are a few data in the literature regarding to the pharmacokinetic and pharmacodynamic effects of SC. Furthermore, most of the existing data are based on in vitro experiments. In the JWH-018 report, at Critical Review Report Agenda item 4.5 Expert Committee on Drug Dependence of World Health Organization (WHO), Thirty&#8208;sixth Meeting Geneva, 16&#8208;20 June 2014, is declared that despite a marked elevation of the heart rate is one of the clinical signs very often seen after intoxication with SC, there is no available study data regarding effects of SC on cardiovascular, respiratory, gastrointestinal, liver, kidneys and genitourinary systems. The aim of this review is to highlight cardiovascular effects of JW-018 which is considered to be the prototype for synthetic cannabinoids to prepare the ground for new work to be done. [Med-Science 2016; 5(4.000): 1049-54

Protective effects of molsidomine against doxorubicin-induced renal damage in rats

Purpose: The purpose of this study was to investigate the therapeutic and protective effects of molsidomine (MLS) against doxorubicin (DOX)-induced renal damage in rats. Methods: Forty rats were randomly divided into five groups (control, MLS, DOX, DOX+MLS and MLS+DOX groups). Thiobarbituric acid reactive substance (TBARS), reduced glutathione (GSH), superoxide dismutase (SOD), catalase (CAT), nitric oxide (NO) and glutathione peroxidase (GPx) levels were determined from kidney tissues and blood urea nitrogen (BUN), creatinine (Cr) and albumin (Alb) levels also determined. Results: DOX treatment caused a significant increase in TBARS levels and a significant decrease in the GSH and CAT levels compared with the control group. In comparison, MLS administration before DOX injection caused a significant decrease in TBARS levels and also increases in GSH and CAT levels, whereas treatment of MLS after DOX injection did not show any beneficial effect on these parameters. All groups showed a significant increase in NO levels compared to the control group. There were no significant differences among the all groups for BUN and Cr levels. Serum level of Alb decreased in the DOX-treated groups when compared with control and MLS groups. The histopathological findings were in accordance with the biochemical results. MLS treatment reversed the DOX-induced kidney damage in group 4. MLS treatment before DOX injection exerted a protective effect against DOX-induced kidney damage. Conclusions: MLS shows promise as a possible therapeutic intervention for the prevention of kidney injury associated with DOX treatment. Additional studies are warranted