Fibrous Connective Tissue Hyperplasia Research Articles

Pyogenic granuloma in a 6-year-old boy - a rare case report

The gingiva, also known as the gums, is the pink-coloured keratinized mucosa that surrounds and protects the teeth. Gingival enlargement or gingival overgrowth, a common trait of gingival disease, is characterized by an increase in the size of gingiva. Irritation fibroma is an exophytic soft tissue mass in the oral mucosa. Indeed, it is not a real neoplasm, but a focal hyperplasia of fibrous connective tissue induced by local trauma or chronic irritation. Pyogenic granuloma is one of the inflammatory hyperplasia seen in the oral cavity, majority are found on the marginal gingiva with only 15% of the tumours on the alveolar part. It predominantly occurs in the second decade of life in young females, male to female ratio is 1:99, and size of lesion varies in diameter from few millimetres to several centimetres. This article presents a case of pyogenic granuloma in an 6year old boy who presented with a gingival overgrowth in his mandibular left buccal surface region i.r.t 31 including marginal and attached gingiva. He had discomfort during mastication, interferes with occlusion there was episode of bleeding during brushing. The lesion was excised and histopathological report confirmed the diagnosis. Case was followed up for six months and no recurrence of the lesion. Etiological factors, clinical features, differential diagnosis and different treatment options are discussed based on the review of current literature available.

The Potential Roles of CHI3L1 in Failed Autologous Arteriovenous Fistula in End-Stage Renal Disease.

Autologous arteriovenous fistula (AVF) is commonly placed for hemodialysis treatment. Recent studies show that increased baseline serum level of Chitinase-3-like protein 1 (CHI3L1) is independently associated with a higher risk of the early failure of forearm AVFs. However, the changes and mechanisms of CHI3LI in local vascular tissues of failed AVF have not be revealed. This study aims to conduct the expression and mechanism of CHI3L1 in vascular tissues from patients. Immunoreactivity of CHI3L1, matrix metalloproteinase 2 (MMP-2) and vascular endothelial growth factor-A (VEGF-A) were detected in vascular tissues collected from nine patients with AVF surgery. Due to the significant stenosis clinically, six of the nine patients received arteriovenous fistula reconstruction. The expression differences of CHI3L1 between the initial vascular tissues and failed AVF are significant (P < 0.05). Failed AVF due to stenosis shows intraluminal thrombus, collagen fiber rupture, fibrous connective tissue hyperplasia, tube wall thickening, neovascularization, scattered inflammatory cell infiltration in the tunica media as well as high CHI3L1 expression level, and the expression of MMP-2 (r = 0.9022, P = 0.0139) and VEGF-A (r = 0.8355, P = 0.0393) was positively correlated with CHI3L1. CHI3L1 expression in vascular tissues possibly plays an important role in AVF failure. MMP-2 and VEGF-A may participate in venous stenosis with CHI3L1.

Management of Epulis Fissuratum of Mandibular Anterior Region By Maintaining The Vestibular Depth. A Case Report

OBJECTIVES Epulis Fissuratum or Denture-induced hyperplasia is benign tumor-like hyperplasia of fibrous connective tissue, which develops usually in association with an ill-fitting complete or partial denture. The aim of this report is to present a case showing the treatment of Epulis fissuratum in relation to an ill-fitting denture with a Simple but innovative technique. The epulis was removed with the conventional surgical approach in which the excision of the epulis was carried out by a split-thickness flap approach in which the wound healing is achieved by secondary closure. The existing denture was relined with a soft tissue conditioner to maintain the depth of the vestibule by preventing the post-surgical wound contracture during healing and to prevent further surgery for vestibulopathy. In addition, the patient continued using the existing denture for functional and aesthetic purposes. After two weeks of wound healing, the vestibular depth was maintained by the relined existing denture. Then the new dentures were fabricated accordingly. After one month of follow-up, no signs of recurrence of epulis fissuratum were noticed.

Protective effect of Shenfu Injection on rats with chronic heart failure based on HMGB1/TLR4/NF-κB signaling pathway

The study aimed to explore the mechanism and targets of Shenfu Injection in the regulation of inflammatory injury in chronic heart failure rats based on the high mobility group box-1/Toll like receptor 4/nuclear factor kappa-B(HMGB1/TLR4/NF-κB) signaling pathway. The rat model of chronic heart failure was established using isoproterenol. The modeled rats were divided into three groups by random number table: the model group, Shenfu group and glycopyrrolate group, and the normal group was also set. The rats were administrated for 15 consecutive days, and on the following day after the last administration, they were sacrificed for sample collection. The cardiac mass index and left ventricular mass index of the rats in each group were measured, and the echocardiogram was used to analyze the cardiac function indices, and ELISA to test the inflammatory indices in rat serum. The pathological morphology and fibrosis status of rat heart tissues were observed by HE staining and Masson staining, respectively. The content of HMGB1 was determined by immunofluorescence staining. The protein and mRNA expression of HMGB1/TLR4/TLR4 signaling pathway was detected by Western blot and RT-qPCR, respectively. The results showed that the chronic heart failure rat model was successfully prepared. The rats in the model group had reduced cardiac function, increased levels of HMGB1 and inflammatory factors(P&lt;0.05), and elevated protein and mRNA expression of HMGB1, TLR4, MyD88, and NF-κB P65 in myocardial tissue(P&lt;0.05), with fibrous connective tissue hyperplasia, inflammatory cell infiltration and severe fibrosis. Shenfu Injection improved cardiac function, decreased the levels of HMGB1 and inflammatory factors(P&lt;0.05) and the protein and mRNA expression of HMGB1, TLR4, MyD88, and NF-κB P65 in myocardial tissue(P&lt;0.05), ameliorated interstitial fibrous connective tissue hyperplasia and inflammatory cell infiltration, and reduced fibrosis. In conclusion, Shenfu Injection can reduce inflammatory damage and improve cardiac function in chronic heart failure rats by regulating the HMGB1/TLR4/NF-κB signaling pathway.

Therapeutic Effects of Diode Laser on the Treatment of Epulis : A Case Report

Abstract&#x0D; INTRODUCTION :- Epulis is a pseudo-tumor growth characterized by fibrous connective tissue hyperplasia in gingivobuccal region. The swelling is usually a result of a local irritant such as calculus formation or a poorly adapted margin of a dental restoration.&#x0D; AIM : - The aim of this case report is removal of an epulis using diode laser, which was located at the aesthetic zone of the lower incisors, and to report on associated changes in the periodontal parameters such gingival inflammation and the position of the tooth following the introduction of an effective oral hygiene regime for the patient.&#x0D; OBJECTIVE :- To evaluate the outcome of surgically excised Epulis using diode laser located at the aesthetic zone of the lower incisors in a 27 years old female patient.&#x0D; METHODOLOGY :- Surgical excision of Epulis by diode laser (810 nm) under local anesthesia.&#x0D; RESULT :- Complete re-epithelization and healing was seen at 1 and 4 weeks time interval.&#x0D; CONCLUSION :- Epulis is observed in patients with poor oral hygiene in areas with local irritating factors. Tissue excision should not extend beyond to the periosteum and adjacent teeth should be thoroughly scaled to remove any source of irritation. Coagulation properties associated with the use of diode laser are beneficial during removal of tumors of inflammatory origin with bleeding tendencies. There is less post-operative bleeding, pain and swelling.&#x0D; Keywords: Diode laser, Oral lesions, Epulis granulomatosa, Female

Enormous epulis fissuratum: A case report

Epulis fissuratum also called as Denture-induced hyperplasia (DIH) is a tumor-like hyperplasia of fibrous connective tissue, which develops in association with an ill-fitting complete or partial denture. Virchoft first invented the term “Epulis” and the meaning is “over the gums”. However the use of this term is not appropriate as it emphasizes only the actual site of the lesion. In most cases, the affected mucosa is usually the oral mucosa of the vestibular sulcus or the palatal region. Therefore, “Denture-induced fibrous hyperplasia” was considered to be a much-preferred term. This is a case report of an 65 year old female with a history of wearing complete denture for 2 years and ended up in developing multiple proliferative growths.

The Angiopoietin-like protein 4: a promising biomarker to distinguish brucella spondylitis from tuberculous spondylitis

ObjectiveThe Angiopoietin-like protein 4 (ANGPTL-4) has been proved to be a protein associated with multiple inflammatory responses. Nevertheless, whether it contributes to distinguishing brucella spondylitis (BS) from tuberculous spondylitis (TS) remains an open question. Our study aim is to explore the capability of the ANGPTL-4 to differentiating BS from TS.Materials and methodIn our study, 53 patients were screened out according to the criteria precisely in Xinjiang Medical University Affiliated of the First Hospital from 1 January, 2016, to 31 December, 2018. Their clinical data were retrospectively reviewed. All of them underwent pathological biopsy and magnetic resonance imaging examination. All the frozen tissue sections were stained for testing ANGPTL-4.ResultAmong the 53 patients, BS had 26 patients, and TS had 27 patients. There was no significant difference between the baseline (P = 0.682) between the two groups. The positive rate of ANGPTL-4 in TS patients (24/27, 88.89%) was higher than that in BS patients (17/26, 65.83%) (P < 0.05). The incidence of microangiopathy and fibrous connective tissue hyperplasia in patients with BS was distinctly higher than those in the TS (P = 0.001, P = 0.008, respectively). Patients of TS frequently presented more granuloma, caseous necrosis, epithelial-like reaction, interleukin 6 (IL-6), and C-reactive protein (CRP) than those of BS.ConclusionOur study provided novel insights into distinguishing BS from TS using the ANGPTL-4 combining with histopathology, which may become new supporting evidence.Key Points• Brucella spondylitis and tuberculous spondylitis are a significant public health concern and even have prolonged damage, contributing to severe health and economic outcomes in Xinjiang of China.• The granuloma, caseous necrosis, epithelioid reaction, microangiosis, and fibrous connective tissue of pathological tissue might play a critical significance for distinguishing brucella spondylitis from tuberculous spondylitis patients.• ANGPLT-4 may become new supporting evidence identify brucella spondylitis and tuberculous spondylitis which is implicated in inflammation angiogenesis-related disorders.

Management of giant fibromatous epulis: a case report

Background: Epulis fibromatosa is a hyperplastic reaction of fibrous connective tissue due to chronic stimulation or irritation, such as sharp parts of the retained root. The mass was pedunculated, pale pink in color, solid consistency, the boundary was firm, and was not easy to bleed with no pain. Aim:Discuss the management of giant fibromatous epulis by excision. Case: A 49-years-old man came to Dental Hospital of Hasanuddin University, complained of gums that had enlarged and disturbed while chewing so that the patient had difficulty to close his mouth. The masses appeared since 3 years ago, initially small and gradually grew to the size 10x5x7 cm, solid consistency, well-defined, not easy to bleed, and not painful. The mass has been treated by excision and removal of tooth 37 in general anesthesia. Discussion: Patient was temporarily diagnosed with suspected fibromatous epulis and the presence of retained root, probably caused by chronic irritation from sharp parts of retained root. Fibrous connective tissue hyperplasia is a benign soft tissue tumor as the response to local irritants. Conclusion: The excision of fibromatous epulis was carried out to remove the mass and eliminating the predisposed factor.

A Clinical Study of the Intra-Neuroendoscopic Technique for the Treatment of Subacute-Chronic and Chronic Septal Subdural Hematoma.

Objective: The surgical technique, safety, efficacy, and clinical application value of the intra-neuroendoscopic technique (INET) for the treatment of subacute-chronic and chronic septal subdural hematoma was investigated based on the structure and pathological features of the hematoma wall, and the critical factors of hematoma growth and recurrence were determined, in order to provide reference for clinical drug treatment.Methods: This was non-randomized concurrent control study. A total of 94 patients who met the inclusion criteria were recruited between May 2015 and February 2019 and were divided into the INET treatment group (INET group, 45 cases) and the burr hole drainage (BHD) treatment group (control group, 49 cases). The hematoma fluid components and the morphological structure and pathological characteristics of the hematoma wall were analyzed, and the surgical duration, subdural drainage tube (SDT) placement duration, intracranial infection rate, Bender grade at the 1 month post-operative follow-up and hematoma recurrence rate within the 6 months of post-operative follow-up were compared between the two groups. A multiple logistic regression model was established to analyze the risk factors associated with recurrence within 6 months.Results: Intraoperative endoscopy showed that the adhesion bands that formed early in the hematoma cavity were strip-like and that those that formed late were lock-column-like. The hematoma cavity was divided into different-sized chambers with by these strips/columns. Pathological sections of cyst wall reveled angiogenesis inside the cyst and mucus-like changes, rupture and hemorrhage in the vascular wall. Obvious inflammatory cell infiltration and fibrous connective tissue hyperplasia were observed in the cyst wall. The osmotic pressure of the hematoma fluid was not significantly different from that of the peripheral venous blood [(296.7 ± 10.3) mOsm/kg vs. (291.5 ± 12.4) mOsm/kg, p = 0.68]. However, the D-dimer contents which reflect the severity of fibrinolysis in the hematoma and the proinflammatory cytokine interleukin 6 (IL-6) were significantly higher in the hematoma fluid than in the peripheral venous blood. The surgery duration for the INET group was significantly longer than that for the control group [(60.4 ± 10.6) min vs. (44.1 ± 9.8) min, p = 0.00], but both the hematoma recurrence rate within 6 months of post-operative follow-up (4.4 vs. 24.5%, p = 0.00) and the SDT placement duration [(2.1 ± 0.6) d vs. (3.9 ± 0.7) d, p = 0.00] for the INET group were both lower than those for the control group. The intracranial infection rate did not differ significantly between the two groups (4.4 vs. 10.2%, p = 0.50). The overall effective rate of the Bender grade at 1 month of follow-up did not differ significantly between the two groups (95.6 vs. 87.8%, p = 0.32), but the proportion of patients who recovered to Bender grade 0 with no symptoms was significantly higher in the INET group than in the control group (86.7 vs. 67.3%, p = 0.03). Multiple logistic regression analysis showed that INET surgery [odds ratio (OR) 3.71, 95% confidence interval (CI) 1.31–9.62, p = 0.02], age of 65 years or younger (OR 1.51, 95% CI 1.05–2.87, p = 0.03) and unilateral subdural hematoma (OR 1.76, 95% CI 1.05–3.41, p = 0.02) were independent factors that reduced the post-operative recurrence rate.Conclusion: The INET surgical plan based on the structure and pathological features of the subacute-chronic and chronic subdural hematoma wall can reduce the recurrence rate and improve the clinical prognosis.Trial registration: ClinicalTrials.gov, NCT02515903. Registered 5 August, 2015.

EXCISION OF A TRAUMATIC FIBROMA WITH DIODE LASER IN A PEDIATRIC PATIENT: CASE REPORT

Fibroma is currently considered the most common reactive hyperplasia of fibrous connective tissue in response to local trauma in the oral cavity. This case deals with the excision of a traumatic fibroma using diode laser (Epic X, wavelength of 940nm, continuous mode, 5W power), whose energy is absorbed by hemoglobin and melanin (chromophores) and is indicated in soft tissue surgeries, favoring coagulation. The results are consistent with the benefits demonstrated in the scientific literature: better visibility in the surgical act due to achieved hemostasis, excellent postoperative phase due to the absence of pain and inflammation, with no need for analgesic medication, no use of sutures, no scarring and no recurrence. It is a safe and fast procedure that also allows performing a histopathological study without altering the tissues to be examined. In the case presented here, the histopathological study confirmed the presumptive diagnosis of fibroma.

Tongsaimai reverses the hypertension and left ventricular remolding caused by abdominal aortic constriction in rats.

Treating ventricular remodeling continues to be a clinical challenge. Studies have shown that hypertension is one of the most common causes of ventricular remodeling, and is a major cause of cardiovascular risk in adults. Here, we report that Tongsaimai (TSM), a Chinese traditional medicine, could inhibit arterial pressure and left ventricular pressure to improve hemodynamic abnormalities in rats impaired by abdominal aortic constriction (AAC). Administration of TSM significantly reduced the heart mass index and the left ventricular mass index significantly in AAC rats. TSM could also markedly ameliorate cardiac collagen deposition and reduce the concentration of hydroxyproline in the heart of AAC rats. Moreover, TSM alleviated cardiac histomorphology injury resulting from AAC, including reducing cardiomyocyte hypertrophy, fibrous connective tissue hyperplasia, cardiomyocyte apoptosis, replacement fibrosis and the disorders of myocardial myofibrils, intercalated discs, mitochondria and mitochondrial crista. In addition, the levels of transforming growth factor (TGF) - β and inflammation-related molecules including tumor necrosis factor-α (TNF-α), which were over-expressed with AAC, were decreased by STM. In conclusion, STM could reverse the hypertension and left ventricular remolding caused by abdominal aortic constriction in rats.

Dynamic Changes in MMP1 and TIMP1 in the Antifibrotic Process of Dahuang Zhechong Pill in Rats with Liver Fibrosis

AbstractOn the basis of carbon tetrachloride (CCl4)induced liver fibrosis in rats, this study aims to investigate the dynamic changes in matrix metalloproteinase 1 (MMP1) and the tissue inhibitor of metalloproteinase 1 (TIMP1) in the antifibrotic process of Dahuang Zhechong Pill (DHZCP). A total of 50 male Sprague Dawley rats, aged 8 weeks, were randomly divided into 3 groups: the control group, the model group (the group treated with CCl4), and the treatment group (the group treated with CCl4 and DHZCP). Rats were sacrificed at Weeks 4 and 8. Liver tissues were separated for RNA sequencing and bioinformatics analysis. Real-time PCR, Western blot analysis, and histological staining were conducted to confirm the gene expression and pathological change in liver tissues. Compared with control group, rats in model group showed poor mental state and slow weight gain. The liver tissues of the rats in the model group exhibited a damaged hepatic lobule structure, fibrous connective tissue hyperplasia, and inflammatory cell infiltration among the hyperplastic tissues. DHZCP could significantly improve the appearance of rats and alleviate CCl4-induced fibrosis. Compared to model group, 798 differentially expressed mRNAs were found in the treatment group, of which 120 were up-regulated and 678 were down-regulated. Differentially expressed mRNAs between the CCl4-induced group and the DHZCP-treated group were mainly focused on the following KEGG pathways: focal adhesion, phagosome, tight junction, and ECM–receptor interactions. Relative to those in the control group, MMP1 was downregulated, whereas, TIMP1 and Col1A1 were upregulated in the CCl4-induced group at Weeks 4 and 8. DHZCP could reverse MMP1, TIMP1, and Col1A1 expression.DHZCP protects against liver injury and exerts an antifibrotic effect on liver fibrosis induced by CCl4 in rats. Its mechanism may be related to the upregulation of MMP1, downregulation of TIMP1, and promotion of collagen degradation.

Locostatin Alleviates Liver Fibrosis Induced by Carbon Tetrachloride in Mice.

Liver fibrosis is featured with excessive deposition of extracellular matrix and fibrous connective tissue hyperplasia. The specific inhibitor of Raf-1 kinase inhibitor protein, locostatin, inhibits the migration of hepatic stellate cells. In this study, we investigated the effect of locostatin on liver fibrosis and its underlying mechanism. Carbon tetrachloride (CCl4) was used to induce liver fibrosis in mice, and locostatin was injected intraperitoneally. Liver fibrosis was assessed by Masson and Sirius red staining, hydroxyproline (HYP) assay, and collagen percentage area. Collagen I, collagen III, and α-SMA were detected by RT-PCR and western blot. The levels of MMP-13, MMP-2, TIMP-1, and TIMP-2 were estimated by ELISA. Liver inflammation was evaluated by HE staining and immunohistochemistry; liver myeloperoxidase (MPO), superoxide dismutase, and malondialdehyde were measured by ELISA; and cytokines were by Mouse Cytokine Array Q4000. Compared to the CCl4 group, HYP (208.56 ± 6.12) µg/g, percentage of total collagen at overall region (1.91 ± 0.13), MMP-13/TIMP-1 (0.19 ± 0.01), MPO (1.45 ± 0.04) U/g, TGF-β (2652 ± 91.20), PDGF-AA (3897 ± 290.69), and E-selectin (1569 ± 66.48) in the liver tissues were decreased significantly in the locostatin-treated group. Locostatin mitigated liver fibrosis and inflammation induced by CCl4. The mechanism is via inhibition inflammatory cytokines, TGF-β, PDGF-AA, and E-selectin.

Effect of long-term crotonaldehyde exposure on heart damage in male rats

Objective: To observe the effect of long term crotonaldehyde exposure on heart damage in male rats, and to explore the possible mechanism of toxic action. Methods: 24 specific pathogen free healthy male wistar rats were randomly divided into 4 groups with 6 rats in each group. Rats were treated with with 8.5, 4.5, 2.5 and 0.0 mg/kg body weight crotonaldehyde by gavage, once a day for consecutive 150 days. After the last treatment, they were anesthetized and collected blood samples by cardiac puncture. The heart was rapidly separated after cervical dislocation. The cardiac organ coefficient was calculated and the histopathology changes in heart were observed by HE staining. At the same time, the activities of creatine kinase (CK) , lactate dehydrogenase-L (LDH-L) in serum were determined by automatic biochemical analyzer. Moreover, the levels of cardiac troponin (cTnT) , Angiotensin Ⅱ (Ang Ⅱ) , Brain natriuretic peptide (BNP) , Aldosterone (ALD) and interleukin (IL) -6, 8, 1β, interferon (IFN) -γ and tumor necrosis factor (TNF) -α in heart were determined by enzyme linked immunosorbent assay. Results: At the 90d, 120 d, and 150 d exposure, compared with the control group, the body weight gain in 4.5 and 8.5 mg/kg groups were decreased. Moreover, the heart weight in 4.5 and 8.5 mg/kg groups, and heart coefficient in 8.5 mg/kg group were decreased (P<0.05) . With the increasing dosage of crotonaldehyde, the degree of pathological changes in the heart of exposed rats were aggravated. The major pathological changes of heart in 4.5 and 8.5 mg/kg groups could be summarized as lymphocyte infiltration, abnormal cardiac muscle fiber arrangements, necrosis and fibrous connective tissue hyperplasia. Compared with the control group, the serum CK activity in 4.5 mg/kg group, CK and LDH-L activitivies in 8.5 mg/kg group were increased (P<0.05) ; Compared with the control group, the levels of ALD and ANGII in the heart of 4.5 and 8.5 mg/kg groups were increased, BNP level were decreased, and cTNT level in 8.5 mg/kg group were increased (P<0.05) . Compared with the control group, the levels of IL-1β、IL-6、IL-8 in 4.5 mg/kg group and IL-1β、IL-6、IL-8、TNF-α、IFN-γ in 8.5 mg/kg group were increased (P<0.05) . Conclusion: Crotonaldehyde could up-regulate cardiac inflammatory cytokines and alter the balance ofangiotensin-aldosterone-brain natriuretic peptide causing heart damage.

Split-Mouth Clinical Trial with Diode LASER and Electrocautery Treatment for Inflammatory Fibrous Hyperplasia

Inflammatory fibrous hyperplasia (IFH), a tumor-like fibrous connective tissue hyperplasia, can develop due to the flange of ill-fitting complete or partial dentures. Laser and electrocautery treatments result in lower morbidity, swelling, and bleeding, and no pain, compared to a conventional scalpel treatment.

Gnathostomatoidea Nematode: Parasite of &lt;i&gt;Sillago sihama&lt;/i&gt; Forsskal, 1775, Sillaginidae, and &lt;i&gt;Argyrops spinifer&lt;/i&gt; Forsskal, 1775, King soldier bream, in the Iraqi Marine Water Fishes, with Notes on Clinical Pathology and Feeding Habits of Infection

Background: The present finding describes third-stage larvae (L3) nematode (Gnathostomatidae) cysts parasitizing the intestinal serosa of the digestive tract of Sillago sihama (Forsskal, 1775) and Argyrops spinifer (Forsskal, 1775, King soldier bream) fishes collected from the Arabian Gulf. Objective: Two species of Gnathostomatidae are recorded, Gnathostoma sp and Gnathostoma binucleatum Almeyda-Artigas, 1991. The gross clinical pathology examination showed extensive damage to the host intestinal tissue, including epithelial necrosis, hemorrhaging, worm encapsulation, and the presence of live larvae encysted and adult in skeletal muscles of fishes causing lesions including mild hyperplasia of fibrous connective tissue around the parasite. The cross examination of fish intestines revealed food items containing parts of the animal body, appendages, Chela, and parts of the carapace of crustaceans. Most food items found in all months also including annelids (polychaetes) in high percentage in November Volume of food items were related to fish size. Juveniles appear to feed mainly on crustaceans and the adults mainly feed on crustaceans, molluscs, polychaetes, echinoderms, and teleosts, among other items. The summer was apparently not the season of parasite infection. The prevalence of infection with Gnathostoma binucleatum was low (6 of 57 fish), whereas the prevalence of infection with Gnathostoma sp. was 3 of 57 fish. These findings of Gnathostomatids represent new records of these parasites in Arabian Gulf fishes. More study needed to recognize on the larval stage parasite infection and their clinic pathology to provide a basic understanding of the general principles of the pathogenesis and pathology of Gnathostomiasis, and the relationship between fish length, food items and infection.

True Fibroma on the Palate: A Unique Case

ABSTRACT Benign fibrous overgrowths are often found in the oral cavity. Majority of the fibromas occurring in the oral cavity are reactive in nature and represent inflammatory hyperplasia of fibrous connective tissue in response to local irritation or trauma rather than being a true neoplasm. True fibroma of the oral mucosa is an extremely rare benign neoplasm, only a few cases have been reported in the literature so far. Here, we report an exceptional case of relatively large true fibroma on the palate in an 80-yearold male patient, which was mimicking a hemangioma, not reported earlier in the literature. How to cite this article Jain M. True Fibroma on the Palate: A Unique Case. Int J Experiment Dent Sci 2016;5(1):69-71.

Resección de fibroma en mucosa oral. Técnica del estrangulamiento

El fibroma traumático es considerado un crecimiento tumoral benigno queaparece en cualquier órgano, pero lo hace con mayor frecuencia en la cavidadoral. Se define como, una hiperplasia reactiva de tejido conectivofibroso, siendo su factor etiológico el traumatismo o la irritación local. Sepresenta generalmente asintomático, en sitios como, mucosa de revestimiento,bordes laterales de lengua y reborde alveolar de pacientes edéntulos.La lesión por lo general no se asocia con síntomas y se observacon mayor frecuencia en adultos, pero puede encontrarse en individuosde cualquier sexo y edad. En el presente artículo, se proponen una técnicapara la extirpación quirúrgica de la lesión. Es un procedimiento simple enel que se busca disminuir el aporte vascular. No requiere mayor tiempooperatorio, además no implica un riesgo importante, ni complicaciones intrao extraoperatorias para los pacientes. Las recurrencias no son frecuentes,a menos que no se elimine el factor irritante.Abstract:The traumatic fibroma is considered a benign growth tumor that can appearsin any organ, but it does most frequently in the oral cavity, and it isdefined as a reactive hyperplasia of fibrous connective tissue, and it´s etiologicalfactor is trauma or local irritation. It usually occurs asymptomaticin places like mucosal lining, tongue and side edges of alveolar ridge ofedentulous patients. The injury usually is not associated with symptomsand is most often seen in adults, but can be found in individuals of any ageand gender. In the present article, a new technique is proposed, which consistof surgical removal of the lesion. It is a simple procedure in which decreasedvascular supply pressure is proposed and does not require moreoperating time, also does not involve a significant risk or complications forpatients. Recurrences are rare, unless the irritant factor is eliminated. DOI: http://dx.doi.org/10.21615/cesodon.29.1.8

Study of Clinical Practical Model of Urinary System Injury

Background:In order to improve the clinical treatment level of urinary system injury, it is necessary to build up an animal model of urinary system wound, which is not only analogous to real clinical practice, but also simple and practical.Methods:We have developed the third generation of firearm fragment wound generator based on the first and the second producer. The best explosive charge of the blank cartridge was selected by gradient powder loading experiments. The firearm fragment injuries were made to the bulbous urethra of 10 New Zealand male rabbits. One week preoperatively and 2, 4 and 8 weeks postoperatively, all the animals underwent urethroscopy and urethrography. At 2, 4 and 8 weeks postoperatively, two animals were randomly selected and killed, and the urethra was cut off for pathological examination.Results:The shooting distance of the third generation of firearm fragment wound generator is 2 cm. The best explosive charge of the blank cartridge is 1 g of nitrocotton. All rabbits survived the procedures and stayed alive until they were killed. Injuries were limited to bulbous urethra and distal urethra. Round damaged areas, 1–1.5 cm in length, on the ventral wall were observed. Ureteroscopy results showed that canal diameter gradually shrank by over 50% in 9 rabbits. The rate of success was 90%. Urethrography result noted that a 1–1.3 cm stricture was formed at the bulbous urethra. Histology results of injured stricture urethra showed that fibrous connective tissue hyperplasia and hyaline degeneration caused further stricture in the canal.Conclusions:The third generation of firearm fragment wound generator imitates the bullet firing process and is more accurate and repeatable. The corresponding rabbit model of traumatic complex urethral stricture simulates the real complex clinical conditions. This animal model provides a standardized platform for clinical researches on treating traumatic injuries to the urinary system.

Echinococcus multilocularis infection leads to increased expression of proliferation and anti-apoptosis factors in liver cells in BALB/c mice

To investigate the effects of Echinococcus multilocularis on host liver cell proliferation in vivo using a BALB/c mouse alveolar hydatid infection model. Sixty-five 8-10-week-old female BALB/c mice were randomly divided into an experimental group (n = 40) and a control group (n = 25) and administered an abdominal injection into the left liver lobe of E. multilocularis protoscolices in saline solution or saline solution alone, respectively. At post-injection day 2, 8, 30, 60, and 90, liver samples were collected for analysis of lesions and lesion-adjacent tissue by hematoxylin-eosin staining and differential expression of proliferating cell nuclear antigen (PCNA), cyclin D1, cyclin A, and cyclin B1 by immunohistochemical staining. The significance of intergroup differences was assessed by Student's t-test. The control group showed normal liver histology at all time points. The experimental group developed E. multilocularis lesions that showed increased severity of pathological features, such as inflammatory cell invasion, steatosis and fibrous connective tissue hyperplasia, over time. At post-injection days 2 and 8, enlarged, binuclear and apocyte hepatocytes were observed close to the lesions. At post-injection days 30, 60, and 90, the number of hepatocytes expressing PCNA progressively increased in the experimental group, and the numbers were significantly higher than in the control group (7.01 +/- 1.89 vs. 1.03 +/- 0.52, 8.41 +/- 2.80 vs. 0.93 +/- 0.31, and 13.4 +/- 4.43 vs. 1.07 +/- 0.94; all P < 0.05). The same progressively increasing trend was seen in the number of hepatocytes expressing CyclinD1, but was only significantly different from controls at post-injection days 30 and 60 (6.73 +/- 2.52 vs. 0.48 +/- 0.43 and 8.22 +/- 3.09 vs. 0.55 +/- 0.34; both P < 0.05). In contrast, the number of hepatocytes expressing cyclin A was significantly increased at post-injection day 30 and then showed a decreasing trend at days 60 and 90, although the numbers of expressing cells remained significantly higher than control levels at all time points (7.75 +/- 3.05 vs. 0.69 +/- 0.36, 3.42 +/- 1.80 vs. 1.14 +/- 0.42, and 3.03 +/- 1.50 vs. 0.69 +/- 0.31; all P < 0.05). The number of hepatocytes expressing CyclinB1 in the experimental group was less robust than the other cyclins (with a general temporal trend of increase followed by decrease), but the differential expression was not significantly different from the control levels at any time point. E. multilocularis infection may promote the expression of host factors related to proliferation and anti-apoptosis in liver. This pathogen-mediated modulation of host cell-survival mechanisms may provide a rationale explanation for the clinical observations of hepatomegaly and the unexpected survival of alveolar echinococcosis patients following major hepatic resection.