Infiltration Of Mononuclear Inflammatory Cells Research Articles

Antigenicity evaluation of lac color and exploratory study for identifying potential biomarkers of anaphylaxis

BackgroundLac color, a natural red dye derived from the larvae of laccifer lacca kerr, is one of the most commonly used substances in food. To date, no studies have reported on the antigenicity of lac color and the other biomarkers that can determine anaphylactic reactions. To address this, we evaluated the antigenicity of lac color through active systemic anaphylaxis (ASA) in addition to identifying potential biomarkers performing exploratory studies. For ASA test, Guinea pigs (n = 5) were sensitized with 0(negative control), 4 mg/kg of lac color, 4 mg/kg of lac color + FCA, and 5 mg/kg of ovalbumin + FCA (positive control) 3 times a week for three weeks. Fourteen days after the last sensitization, animals were challenged intravenously weekly for two weeks. Hematological and histopathological analyses were performed and compared to control groups.ResultsIn the ASA test, all lac color groups showed mild symptoms such as nose rubbing, urination, and evacuation, which are insufficient indicators of anaphylaxis. Exploratory studies identified several biomarkers: decreased platelet count, and increased basophil count; distention in the lung, and redness on the inner wall of trachea; mononuclear inflammatory cell infiltration (MICI) in the ear, and heart hemorrhage. When these biomarkers were applied to the ASA test of lac color, in comparison to the negative control group, the positive control group (ovalbumin + FCA) showed a significant over 60-fold reduction in platelet count and nearly threefold higher basophil count compared to other groups. Furthermore, only positive control group exhibited full lung distention and severe redness on the inner wall of the trachea. Mononuclear inflammatory cell infiltration (MICI) in the ear was about three times higher, and heart hemorrhage was only present in the positive control group compared to others. None of the lac color groups were different from the negative control group (p > 0.05), whereas the positive control group was significantly different (p < 0.05).ConclusionsOur study concludes that lac color, at the tested concentrations, does not induce antigenicity in the guinea pig model, providing valuable safety data. Furthermore, the biomarkers identified in this study offer a supportive approach to evaluating the immunogenicity of substances in future research.

Diagnosis and hormonal treatment of cystic ovaries associated with uterine disorders in Egyptian buffaloes: ultrasonography, histopathological and serological investigations

Cystic ovarian disease (COD) with uterine abnormalities is a postpartum reproductive pathology in Egyptian buffaloes causing significant economic losses. In this study, we aimed to employ various diagnostic methods for detecting cystic ovarian disease (COD) in Egyptian buffaloes. tour study assessed the effectiveness of the GnRH/PGF2α protocol as a treatment strategy. Our goal was to determine if this protocol could effectively reduce economic losses associated with cystic ovarian disease and improve herd fertility in Egyptian buffaloes. Eighty Egyptian buffalo cows were included in this study. They were identified to have follicular cysts through rectal examination, which was confirmed by ultrasonography. These buffaloes were then divided into two main groups: the COD Control (untreated) (GA) (n = 40) and COD group (GB) (n = 40) treated with GnRH/PGF2α. According to our immunological studies, buffaloes in the COD-treated group (GB) exhibited significantly lower serum levels of pro-inflammatory cytokines (IL-6, IL-1β, and TNF-α) compared to the control group. This observation was consistent with the decline in E2 levels and the increase in P4 levels (p < 0.01–0.001) observed in the treated animals compared to the untreated group. Furthermore, serum cortisol and glucose concentrations decreased in COD-treated buffaloes. Histopathological examination of ovaries and uterine tissue from slaughtered COD buffaloes has revealed significant structural alterations. These include the presence of ovarian cysts of varying sizes with vacuolar degeneration. Additionally, lymphoplasmacytic endometritis was observed in the uterine tissue of affected animals, featuring degeneration and desquamation of the endometrial lining accompanied by infiltration of mononuclear inflammatory cells. Severe and prolonged cases of COD, which did not respond to treatment, exhibited marked adverse pathological changes upon histopathological assessment of the genital tract. In conclusion, hormonal treatment with GnRH/PGF2α appears to be effective in treating COD-affected animals. The study provides valuable insights into the immunological, biochemical, and histopathological aspects of cystic ovaries associated with uterine disorders in Egyptian buffaloes, while also evaluating hormonal treatment for cystic ovarian disease as a means to minimize economic losses and improve herd fertility in this species.

Evaluation of the Safety and Efficacy of Curcumin-Synthesized Silver Nanoparticles in Rats Exposed to Chlorpyrifos During Puberty Development.

Silver nanoparticles (Ag-NPs) have garnered significant attention in recent years due to their therapeutic effects. Curcumin (CUR) has been utilized as a coating agent for synthesizing Ag-NPs, intended to act as a potential drug. This study was designed to evaluate the safety and efficacy of curcuminsynthesized silver nanoparticles on rats exposed to chlorpyrifos (CPF) during their pubertal development. Forty-two male Wistar rats, 23 days old, were selected and randomly divided into 7 groups (n=6) as follows: positive control, negative control, CPF (5 mg/kg), silver nanoparticles synthesized using curcumin at 40 μg/kg (CUR-Ag-NPs 40), CUR-Ag-NPs 80, CPF+ CUR-Ag-NPs 40, CPF+ CUR-AgNPs 80. All treatments were administered via gavage for 30 days. At the end of the study, rats were anesthetized using ketamine (50 mg/kg), and xylazine, (10 mg/kg) and blood was collected from the heart for serum analysis of liver enzymes, urea, and creatinine. Liver and kidney tissues were isolated for histopathological analysis. No significant differences were observed in serum levels of AST, ALT, and ALP enzymes as well as urea and creatinine levels among the different groups. Light microscopy observation revealed multifocal inflammatory mononuclear cell subsets in liver tissue associated with mild inflammatory mononuclear cell infiltration in the portal region in CPF, CUR-Ag-NPs 40, CUR-Ag-NPs 80, CPF+CUR-Ag-NPs 40, and CPF+CUR-Ag- NPs 80 groups. Histological examination of kidney tissue showed degenerative changes in the tubular epithelium, congestion, and mild infiltration of mononuclear inflammatory cells in the renal interstitial tissue in the CPF group, CUR-Ag-NPs 40, CUR-Ag-NPs 80, CPF+CUR-Ag-NPs 40 and CPF+CUR-Ag-NPs 80 groups. This study failed to establish the safety and efficacy of CUR-Ag-NP at 40 and 80 μg/kg in prepubertal rats exposed to CPF. However, further studies should be conducted to thoroughly characterize the efficacy of CUR-Ag-NP in developmental animal models.

The Role of Susceptibility Weighted Imaging as a Substitute to Post-Contrast Tl-Weighted Images in Detection of Active Multiple Sclerosis Lesions

Abstract Background And Purpose Multiple sclerosis (MS) is a progressive inflammatory, demyelinating, autoimmune disease of the central nervous system (CNS). Its inflammatory process is thought to be initiated and maintained by an autoimmune cascade, leading to the accumulation of focal perivascular infiltrates of mononuclear inflammatory cells, microglia activation, demyelination, and axonal degeneration. Acute inflammatory activity of MS lesions is traditionally assessed through contrast-enhanced Tl- weighted MR images. Yet, the use of contrast is contraindicated in some patients. However, SWI may represent a viable alternative to contrast agents for this purpose. Aim The aim of this study is to determine whether a qualitative evaluation of SWI can be used to distinguish active and inactive MS lesions and whether it could be considered as a feasible alternative to gadolinium-based contrast agents for fulfilling this objective. Materials And Methods our study was carried out on 76 Adult patients of either sex with a known diagnosis of MS based on the 2010 revision of the McDonald criteria. SWI &amp;post contrast Tl weighted imaging were recorded and compared. Results The presence of hypointense rings or marked hypointensity showed a strong association with the absence of gadolinium enhancement (P, .001), with a sensitivity of 93.0% and a specificity of 82.9%. The presence of mild hypointensity or isohyperintensity showed a strong association with the presence of gadolinium enhancement (P, .001), with a sensitivity of 68.3% and a specificity of 99.2%. Conclusions A qualitative analysis of the signal pattern on SWI of T2-hyperintense MS lesions allows determining the likelihood that the lesions will enhance after administration of a gadolinium contrast agent, with high specificity albeit with a moderate sensitivity. While it cannot substitute for the use of contrast agent, it can be useful in some clinical settings in which the contrast agent cannot be administered.

Analysis of the characteristics of reflectance confocal microscopy images of xanthogranuloma and xanthoma.

Both xanthogranuloma and xanthoma clinically manifest as yellowish skin lesions. Historically, the gold standard for diagnosis was skin histopathological examination. Currently, the advent of reflectance confocal microscopy (RCM) offers additional diagnostic support for these diseases by revealing their microscopic features, thereby enhancing the theoretical foundation for diagnosis. This study aimed to elucidate the distinctive characteristics of RCM images in xanthogranuloma and xanthoma, assess their diagnostic value, and investigate the relationship between RCM and histopathological features, ultimately boosting diagnostic accuracy. RCM and histopathological examinations were conducted on 13 patients with xanthogranuloma and 12 with xanthoma, recruited from our Dermatology Clinic between August 2022 and November 2023. The study involved analyzing RCM image features and correlating them with histopathological findings. The RCM images of 13 xanthogranuloma and 12 xanthoma cases showed similar features. Xanthogranuloma predominantly exhibited epidermal atrophy and thinning in 6 cases (46.15%). Additionally, in 69.23% of cases, scattered small mononuclear inflammatory cells were infiltrated in the superficial and middle dermis layers. Medium to high refractive cells, predominantly vacuolated and resembling foam, were observed in 61.54% of cases. All cases demonstrated high refractive cells with distinct target-shaped, disc-shaped, horseshoe-like, and flower-ring structures. Concordance rates with histopathological examinations were 69.23, 92.31, 92.31, and 100%, respectively. Regarding xanthoma, epidermal atrophy and thinning occurred in two cases (16.67%), and mononuclear inflammatory cell infiltration was observed in 25% of cases. High refractive cells with the previously mentioned shapes were present in 100% of cases, though only 16.67% displayed these characteristics exclusively. The concordance rates were 66.67, 91.67, 100, and 91.67%, respectively. RCM imaging of xanthogranuloma and xanthoma presents distinctive, highly consistent features with their histopathology, offering valuable insights for clinicians in diagnosing and differentiating these conditions.

Dietary Selenium Insufficiency Induces Cardiac Inflammatory Injury in Chicks

BackgroundLaying hens undergo intensive metabolism and are vulnerable to cardiac insults. Previous research demonstrated overt heart disorders of broiler chickens induced by dietary Se deficiency. ObjectivesThis study aimed to reveal effects and mechanism of dietary Se insufficiency on cardiac injuries of egg-type chicks in their early life. MethodsWhite Leghorn chicks (0-d-old, female) were fed a corn-soy, Se-insufficient basal diet (BD, 0.05 mg Se/kg; n = 11) or the BD supplemented with 0.3 mg Se/kg (as sodium selenite; n = 8) for 35 d. Cardiac tissues were collected at the end of study for histology and to determine its relationship with heart Se contents, selenoprotein expression profiles, antioxidant and inflammatory status, and the Toll-like receptor 4/extracellular signal-regulated kinases/p38 map kinase/c-Jun N-terminal kinase (TLR4/ERK/P38/JNK) pathway. ResultsCompared with those fed 0.35 mg Se/kg, chicks fed BD had significantly lower body weights and average daily gain, and 28% lower heart Se, and developed cardiac mononuclear inflammatory cell infiltration, along with elevated (P < 0.05) serum concentrations of creatine kinase, aldolase, and interleukin-1 (IL-1). The BD decreased (P < 0.05) body weight and heart glutathione contents and expression of selenoproteins but increased (P < 0.05) heart concentrations of malondialdehyde and reactive oxygen species. These changes were associated with increased (P < 0.05) mRNA and/or protein concentrations of cyclooxygenases, lipoxygenase-12, cytokines (IL-1β), nuclear factor (NF) κB subunit, chemokines, and receptors (CCL20, CXCR1, and CXCLI2) and increased (P < 0.1) TLR4/ERK /P38/JNK in the heart of Se-insufficient chicks. ConclusionsDietary Se insufficiency induces infiltration of mononuclear inflammatory cells in the heart of egg-type chicks. This cardiac injury was mediated by decreased functional expressions of selenoproteins, which resulted in apparent elevated oxidative stress and subsequent activations of the TLR4 pathway and NF κB.

Effect of pyometra on vascularity alterations, oxidative stress, histopathology and inflammatory molecules in feline

This study aimed to investigate blood flow, hemodynamical features by Doppler ultrasound, the oxidative stress biomarkers from serum samples, and histopathology from uterine tissue, in healthy queens and queens with pyometra. Twenty queens were categorized into two groups, according to signs, history, and ultrasound findings, as pyometra and control healthy queens. Doppler ultrasonography, total antioxidant capacity (TAC), malondialdehyde (MDA), albumin, bacteriological isolation, histopathology, and immunohistochemistry of tumor necrosis factor-alpha (TNF-α) and nuclear factor kappa B (NF-κB) P65 were performed. Uterine diameter and thickness increased significantly in the pyometra group compared to control. Uterine peak velocity and flow rate were significantly higher in the control group. The pyometra group showed a significant decrease in albumin, TAC, and a significant increase in MDA. Fibrosis and mononuclear inflammatory cell infiltration were seen in the pyometra samples. The mean area percentage of TNF-α expression in the uteri of the pyometra group was higher. The expression of NF-κB P65 in the uteri in the pyometra group was significantly higher. Doppler ultrasonography can provide valuable information for diagnosing pyometra in queens by elevating the uterine thickness with reducing blood flow rate. Oxidative stress, TNF-α, and NF-κB expression alterations varied between pyometra and control groups.

Effect of Silymarin on Gentamicin Induced Nephrotoxicity in Rats

Background: As oxidative stress is an important factor in producing nephrotoxicity by a variety of drugs and chemicals; so, it may be assumed that agents having antioxidant property may protect the kidney from oxidative damage and can improve renal function. Objective: In the present study the ameliorative effect of silymarin was determined in a gentamicin-induced nephrotoxic model of rat. Methodology: This experimental animal study was carried out in the Department of Pharmacology at Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh from January 2014 to January 2015 for a period of one year. In this study nephrotoxicity was induced by administering gentamicin (80 mg/kg/day for 7 days) intraperitoneally. Silymarin was administered (500 mg/kg/day for 14 days) orally concomitantly with gentamicin (7 days) and sacrificed on 15th day. To determine nephrotoxicity and amelioration of nephrotoxicity as well as the status of oxidative stress and lipid peroxidation; serum creatinine, serum urea, renal cortical reduced glutathione and malondialdehyde levels were estimated. Changes in renal architecture were estimated by histopathology of renal tissues. Results: Group (II) rats were injected gentamicin intraperitoneally for 7 days and sacrificed on 15th day showed significant (P&lt; 0.001) increase of serum creatinine and urea level while there was significant (P&lt; 0.001) reduction of renal cortical glutathione and increase (P&lt; 0.001) in malondialdehyde concentration when compared to the control group (group I). This was supported by histological observations of H&amp;E and PAS stained transverse section of renal cortex which suggested significant (P&lt; 0.001) level of structural damage of renal cortex as evidenced from glomerular atrophy, tubular degeneration, presence of desquamated cellular debries and cast in the tubular lumen, mononuclear inflammatory cell infiltration. Statistically significant amelioration was observed in all the biochemical parameters which were supported by histology of renal cortex in silymarin treated group. Conclusion: The results from biochemical and histological observations of the present study indicate that silymarin was probably effective to ameliorate the signs of toxic damage to the renal cortex. Bangladesh Journal of Infectious Diseases, December 2023;10(2):71-76

Gambaran Patologi Anatomi dan Histopatologi Organ Visceral Kambing Kacang (Capra aegagrus hircus) Yang Terinfeksi Sistiserkus

The demand for kacang goat (Capra aegagrus hircus)in Kupang City is very high in the local market, especially before the sacrificial festival. Although the goat population growth is high, there are several reasons that cause low productivity, namely parasitic infection.worms Taenia infect carnivores (as well as humans) as the definitive host and involve an intermediate host which will develop into a cysticercus. The purpose of this study was to determine the anatomical pathology and histopathology of the visceral organs of kacang goats infected with cysticercus. This study used 6 samples of visceral organs of kacang goats consisting of 4 liver organs, 1 rumen organ and 1 colon organ from 6 kacang goats infected with cysticercus, in Pasir Panjang Village, Kupang City. Macroscopic observations, tissue fixation in 10% formalin, tissue processing and HE staining were carried out. The results of the study on liver organs infected with cysticerci showed pathological changes in the form of fibrosis, while in the rumen and colon only cysticerci were formed. Histopathological changes in the liver organs of kacang goat infected with cysticercus in the form of mononuclear and polymorphonuclear inflammatory cell infiltration, necrosis, congestion, hemorrhage, hydropic degeneration, widening of sinusoids and fibrous tissue. Meanwhile, changes that occur in the rumen and colon organs are in the form of infiltration of mild inflammatory cells.

The protective effects of Capparis spinosa aqueous extract against methotrexate in male albino rats

Abstract Background: Methotrexate (MTX) concentrations in liver disorders can cause ischemia, requiring Capparis spinosa extract for antioxidant and free radical scavenging properties. Objective: The purpose of this investigation is to ascertain whether or not an aqueous extract of C. spinosa can lessen the cytotoxic effects of MTX in male albino rats. Materials and Methods: A total of 24 male albino rats were separated into four groups of six each. Oral normal saline (0.5 mL/kg BW) was administered to the placebo group. Group A received a weekly intraperitoneal injection of 20 mL/kg of MTX. The C. spinosa extract 250 mg/kg body weight group. The group was given MTX and C. spinosa 250 mg/kg by intraperitoneal (i.p.) injection weekly for 3 months. Results: Aspartate aminotransferase levels were significantly (P &lt; 0.05) higher in the positive group compared to the control group. Alanine transaminase and alkaline phosphatase levels in the liver were also higher in participants who tested positive compared to those in the control group (P &lt; 0.05). Compared to the control group, the treated group revealed no statistically significant changes in liver enzymes after receiving C. spinosa extract (P &lt; 0.05). For the histological study, histological examination of the cross sections prepared from the liver of a rat injected with MTX as a single dose per week showed the presence of many histological lesions represented by the presence of degeneration and necrosis of the hepatocytes with rupturing of the wall of blood vessels, central veins, and hepatic veins, as well as the presence of infiltration of mononuclear inflammatory cells. Conclusion: The results of the present study focused that C. spinosa are promising hepatoprotective elements for improving defence mechanisms in the physiological and histological systems against oxidative stress under various circumstances.

The Effect of Nigella Sativa Oil on Imiquimod Induced Model of Psoriasis in Thin Skin of Adult Male Mice. A Histological Study

Abstract Background Psoriasis was reported to be a chronic, immune-mediated inflammatory skin disease. Psoriasis can be induced in mice by Imiquimod which is an immune response modifier and it is the most widely used animal model of psoriasis. Nigella sativa oil is frequently used for its antiinflammatory and anti-oxidant activities. The current study is aimed to assess the effect of oral Nigella Sativa oil on imiquimod induced model of psoriasis in thin skin of adult male mice. Materials &amp; methods The current study included twenty male albino mice. After seven days acclimatization period, animals were subjected to shaving of square shaped area 2 x 2 cm2 at the backs of all mice. Then, animals were divided into three groups: Group I: Control, n = 10: subdivided into: Subgroup IA (Negative Control), Subgroup IB: which received a daily dose of 20 mg of Nigella sativa oil orally. Group II, n = 5: Each mouse received a daily topical dose of 62.5 mg IMQ cream on the shaved back skin for fourteen days. Group III, n = 5: Each mouse received a daily topical dose of 62.5 mg IMQ cream on the shaved back skin for fourteen days. On day seven after shaving and 4 hours after application of IMQ cream, each mouse in group III received 20 mg of Nigella sativa oil once daily for seven days. Skin specimens were obtained from the shaved parts of skin of the backs of all animals and were processed for light microscopic examination. Results Imiquimod (IMQ) application led to apparent increased epidermal thickness, apparent thickening of stratum corneum and alterations in the normal appearance of keratinocytes with vacuolation inside their cytoplasm and increased intracellular spaces between cells. Apparently Elongated epidermal rete ridges were observed along with abundant infiltrates of mononuclear inflammatory cells in the dermis. However, oral use of Nigella sativa oil (N.sativa) strongly inhibited IMQ-induced psoriasis-like inflammation and alleviated all epidermal and dermal changes observed after IMQ application. Conclusion N. sativa can be used as an effective treatment for modraete psoriasis.

Investigation of the efficacy of systemic N-Acetyl Cysteine therapy preventing nasal mucositis following radiotherapy.

Radiotherapy (RT) is one of the main methods used in the treatment of head and neck cancers but may cause mucosal side effects in the tumor area and surrounding structures. These include nasal mucosal disorders and chronic rhinosinusitis due to disruption of the mucociliary system. This situation seriously affects the quality of life of the patients and there is no accepted effective method for its treatment yet. In our study, we aimed to examine the side effects of RT on the nasal mucosa and mucociliary system and to investigate histopathologically and immunohistochemically the effectiveness of N-acetyl cysteine (NAC) in preventing these side effects of RT. The study was carried out with 30 female Sprague Dawley rats devided in three groups. No intervention was made in the control group. On the second day of the experiment, 30 Gy radiotherapy was applied to the head area in the RT group. NAC was administered intraperitoneally at a dose of 1 g/kg/day for 14 days from the first day of the study to the RT+ NAC group. On the second day, 30 Gy of radiotherapy was applied to the head area 1 hour after the NAC application. On the 14th day, 1 hour after NAC was applied to the RT+NAC group, all animals were sacrificed. The nasal mucosa samples were stained with hematoxylin-eosin, and the intensity and extent of staining sentan in the nasopharyngeal tissue samples were evaluated by immunohistochemical staining using anti-SNTN antibody. The loss of cilia in the nasal tissue was lower in the RT+NAC group than in the RT group. The intensity and extent of staining in the nasopharyngeal tissue of Sentan was higher in the RT+NAC group than in the RT group. Mucosal neutrophil and mononuclear inflammatory cell infiltration in the nasal tissue, vascular dilatation, hyperemia and hemorrhage, erosion and shedding of the mucosal epithelium, mucosal ulceration were found to be similar in the RT+NAC group and the control group. It was milder in the RT+NAC group than in the RT group, but not statistically significant. Radiotherapy caused pathological changes in the nasal mucosa, caused loss of cilia and a decrease in the level of Sentan, the cilia apical protein. The results of our study showed that NAC treatment can reduce the side effects of RT on the nasal mucosa. It also showed that NAC was effective in preventing the loss of cilia, which is the building block of the mucociliary system, and improving the expression of Sentan.

Lower Circulating Cytotoxic T-Cell Frequency and Higher Intragraft Granzyme-B Expression Are Associated with Inflammatory Interstitial Fibrosis and Tubular Atrophy in Renal Allograft Recipients.

Background and Objectives: Inflammatory interstitial fibrosis and tubular atrophy (i-IFTA) is an inflammation in the area of tubular atrophy and fibrosis. i-IFTA is poorly associated with graft outcome and associated with infiltration of inflammatory mononuclear cells. A cytotoxic T cell is a granzyme B+CD8+CD3+ T cell, mainly secret granzyme B. Granzyme B is a serine protease that may mediate allograft injury and inflammatory interstitial fibrosis and tubular atrophy (i-IFTA). However, there is no report identifying the association of granzyme B with i-IFTA after a long post-transplant interval. Material and Methods: In this study, we have measured the cytotoxic T-cell frequency with flow cytometry, serum and PBMCs culture supernatants granzyme-B levels with ELISA and intragraft granzyme-B mRNA transcript expression with the RT-PCR in RTRs in 30 patients with biopsy-proven i-IFTA and 10 patients with stable graft function. Result: The frequency of cytotoxic T cells (CD3+CD8+ granzyme B+) in SGF vs. i-IFTA was (27.96 ± 4.86 vs. 23.19 ± 3.85%, p = 0.011), the serum granzyme-B level was (100.82 ± 22.41 vs. 130.32 ± 46.60, p = 0.038 pg/mL) and the intragraft granzyme-B mRNA transcript expression was (1.01 ± 0.048 vs. 2.10 ± 1.02, p < 0.001 fold). The frequency of CD3+ T cells in SGF vs. i-IFTA was (66.08 ± 6.8 vs. 65.18 ± 9.35%; p = 0.68) and that of CD3+CD8+ T cells was (37.29 ± 4.11 vs. 34.68 ± 5.43%; p = 0.28), which were similar between the 2 groups. CTLc frequency was negatively correlated with urine proteinuria (r = -0.51, p < 0.001), serum creatinine (r = -0.28, p = 0.007) and eGFR (r = -0.28, p = 0.037). Similarly, the PBMC culture supernatants granzyme-B level was negatively correlated with urine proteinuria (r = -0.37, p < 0.001) and serum creatinine (r = -0.31, p = 0.002), while the serum granzyme-B level (r = 0.343, p = 0.001) and intragraft granzyme-B mRNA transcript expression (r = 0.38, p < 0.001) were positively correlated with proteinuria. Conclusions: A decrease in the CTLc frequency in circulation and an increased serum granzyme-B level and intragraft granzyme-B mRNA expression shows that cytotoxic T cells may mediate the allograft injury in RTRs with i-IFTA by releasing granzyme B in serum and intragraft tissue.

Myostatin-mediated regulation of skeletal muscle damage post-acute Aeromonas hydrophila infection in Nile tilapia (Oreochromis niloticus L.).

This study focuses on the relationship between myostatin (MyoS), myogenin (MyoG), and the growth hormone/insulin-like growth factor-1 (GH/IGF-1) axis for muscle growth and histopathological changes in muscle after an Aeromonas hydrophila infection. A total number of 90 Nile tilapia (55.85g) were randomly allocated into two equal groups of three replicates each. The first group was an uninfected control group that was injected intraperitoneally (ip) with 0.2ml phosphate buffer saline (PBS), while the second group was injected ip with 0.2ml (1.3 × 108CFU/ml) Aeromonas hydrophila culture suspension. Sections of white muscle and liver tissues were taken from each group 24h, 48h, 72h, and 1week after infection for molecular analysis and histopathological examination. The results revealed that with time progression, the severity of muscle lesions increased from edema between bundles and mononuclear inflammatory cell infiltration 24h post-challenge to severe atrophy of muscle bundles with irregular and curved fibers with hyalinosis of the fibers 1week postinfection. The molecular analysis showed that bacterial infection was able to induce the muscle expression levels of GH with reduced ILGF-1, MyoS, and MyoG at 24h postinfection. However, time progression postinfection reversed these findings through elevated muscle expression levels of MyoS with regressed expression levels of muscle GH, ILGF-1, and MyoG. There have been no previous reports on the molecular expression analysis of the aforementioned genes and muscle histopathological changes in Nile tilapia following acute Aeromonas hydrophila infection. Our findings, collectively, revealed that the up-and down-regulation of the myostatin signaling is likely to be involved in the postinfection-induced muscle wasting through the negative regulation of genes involved in muscle growth, such as GH, ILGF-1, and myogenin, in response to acute Aeromonas hydrophila infection in Nile tilapia, Oreochromis niloticus.

Dermatomyositis Presenting with Isolated Dysphagia: A Case Report

We report a case of a 75-year-old woman who was diagnosed with dermatomyositis presenting with isolated dysphagia. There were no obvious cranial nerve deficits with normal motor grade in all the limbs in neurological examinations, but a suspicious rash was observed in the anterior chest. The serum creatine kinase was 306 IU/L, and active myopathic changes in bilateral limb muscles were observed in the electromyography test. Muscle biopsy from vastus lateralis showed perivascular infiltration of mononuclear inflammatory cells, which was compatible with dermatomyositis. She had responded to oral prednisolone and azathioprine.

Protective effect of propolis on liver and kidney injury caused by methotrexate in chicks

The current study aimed to explain propolis's protective effect on the liver and kidney damage caused by methotrexate (MTX). A total of 80 chickens at one day old were used and divided into three groups; the first group was the control group, the second group received the propolis, the second group was treated with MTX, and the fourth group received both propolis and treated with MTX. After 15 days of experimental, all chickens were euthanized, and blood samples and liver and kidney tissue were collected. The result showed that the treated group with MTX showed an increase in serum levels of AST, ALT, AP, urea, creatinine, and uric acid in comparison with both the control and propolis group, while in the group treated with both Propolis and MTX showed serum level of AST, ALT, AP, urea, creatinine, and uric acid similar to that recorded in both in the control group and MTX group. The liver sections treated with methotrexate showed hyperplasia of fibrocytes in the portal area with infiltration of mononuclear inflammatory cells represented by macrophages, and coagulative necrosis in affected hepatocytes, clear vacuoles in the hepatocytes, massive infiltration of macrophages. Sections of the liver treated with methotrexate and propolis explain a marked decrease in fatty degeneration, with few infiltrations of mononuclear inflammatory cells around portal areas. The liver section from the propolis-treated group and the control group showed typical hepatic tissue architecture. The kidney sections treated with methotrexate showed coagulative necrosis in the endothelial cells, glomeruli appearing irregular in shape, and hemorrhaging in the extracellular matrix. The sections of the kidney treated with methotrexate and propolis explain a marked rise in the renal tubules with the typical feature of a healthy one. The section of the kidney from the propolis treated group and control group showed typical architecture of renal tissue. In conclusion, propolis greatly protects against MTX's toxic effect on chicks' liver and kidneys.

Destructive inflammatory reaction after an autologous retinal pigment epithelium and choroid transplantation: no detection of an auto-immune response

PurposeFive patients who underwent uncomplicated retinal pigment epithelium (RPE)-choroid transplantation for neovascular age-related macular degeneration developed a destructive inflammatory reaction causing subretinal fluid accumulation and extensive RPE atrophy in the graft. We hypothesized that this inflammation could be caused by an auto-immune response against the graft, resulting in circulating auto-antibodies. The aim of our study was to examine a potential autoimmune origin, which would allow a more targeted therapy approach.MethodsFive above-mentioned patients and four control groups of five patients each were included: 1) after uncomplicated RPE-choroid transplantation, 2) after full macular translocation, 3) treated with anti-vascular endothelial growth factor, and 4) healthy controls. Histopathology of rejected graft tissue was performed using standard procedures. Presence of RPE-choroid autoantibodies in serum was examined by indirect immunofluorescence and Western blot, and human leukocyte antigen (HLA) typing was performed.ResultsHistopathological examination of an explanted graft showed infiltration of T-lymphocytes and macrophages in the choroid and RPE, and an increased number of B-cell lymphocytes were found in the choroid. Indirect immunofluorescence showed weak RPE-choroid autoantibody immunoreactivity in three patients of different groups. Western blot did not show specific RPE-choroid autoantibody immunoreactivity and no difference of HLA genotypes between the groups was found.ConclusionsAlthough local mononuclear inflammatory cell infiltration and a high number of B-lymphocytes were observed in an explanted graft, we did not detect serological evidence of an autoimmune origin of the postoperative inflammation using direct immunofluorescence and Western Blot. Alternatively, the graft failure may have been caused by local innate inflammation, triggered by breakdown of tolerance. Based on our current findings of this small study group, we have no rationale to pursue therapies targeted towards autoreactive graft failure. More research is needed to confirm our findings.

Clinicopathological and molecular studies on cattle naturally infected with lumpy skin diseases in selected districts of Wolaita Zone, Southern Ethiopia

BackgroundLumpy skin disease is a contagious viral disease of cattle caused by LSDV that results in huge economic losses in the cattle industry. This study characterizes LSDV in cattle through clinicopathological and molecular techniques in selected districts of Wolaita Zone, Southern Ethiopia.MethodsA crossectional study was conducted from November 2020 to June 2021 using Real-time polymerase chain reaction and Histopathological techniques to confirm LSDV.ResultThis study revealed that the percentage of positivity of cattle for LSDV was 36.2%. Clinically, cattle infected with LSDV revealed fever (39–41 °C), nodular lesions on the skin and mucous membranes, and lymphadenopathy. Histopathologically, affected tissue revealed ballooning degenerations of the epidermis, infiltration of mononuclear inflammatory cells, vasculitis, and intracytoplasmic eosinophilic inclusion bodies. RT-PCR confirmed that DNA extracts from skin biopsies of virus isolates were positive for LSDV.ConclusionThe present study confirms that LSDV is widely circulating in cattle of selected districts of the Wolaita zone. Thus, effective control measures through regular vaccination and further confirmation of circulating strains of LSDV through detailed molecular analysis should be recommended.

Hematúria enzoótica bovina no estado do Tocantins e o uso da ultrassonografia como método de diagnóstico

Bovine enzootic hematuria (BEH) is a chronic disease caused by ingestion of Pteridium esculentum subsp. arachnoideum (Kaulf.) Thomson. This disease has great importance because it affects the animal wellbeing, causes economic losses, and hinders public health due to the toxic principle that is present in the milk of cows that ingest this plant. Early diagnosis assists in the decision making for disposal and replacement of animals in endemic regions. Despite ultrasonography is a useful tool for diagnosis of this disease, there is a lack of studies evaluating BEH in the state of Tocantins, Brazil, using ultrasound and epidemiological data and clinical signs; however, the histopathological examination is the method that provides the definitive diagnosis. The objective of this study was to describe the occurrence of BEH in the state of Tocantins and evaluate the efficiency of bladder ultrasound examination for diagnosis and prognosis of BEH. Ten animals that presented intermittent hematuria and hypo-colored mucous membranes were subjected to clinical and complementary exams. The urine physical analysis presented light red color, high turbidity, and positive sedimentation. The ultrasonography showed a thick, irregular mass in the bladder wall, containing an echogenic liquid of high cellularity and pedunculated papillary lesions. Macro and microscopic analyses of the animals’ bladders showed areas with vascular proliferation in the sub-mucous membranes associated with mononuclear inflammatory cell infiltrate and proliferation of the epithelium. Ultrasonography is an excellent option and, combined with clinical and laboratory exams of blood and urine, enables the diagnosis and prognosis of BEH.

Effect of vestibular stimulation on cold water stress-induced neurological changes in Wistar rats

The current study was undertaken to see the effects of cold-water stress on the brain and to evaluate the beneficial effect of vestibular stimulation on stress-induced brain changes. Healthy, male, Wistar rats, weighing 180 to 250 gm with 3-6 months of age, were used for the study. Stress was induced by making the animals swim in cold water maintained at 100C for 30 min a day, for 14 days. Following cold water swimming stress, bilateral hot water caloric vestibular stimulation was given to the animals using 410C temperature water for 15 days. Rats were sacrificed and histopathological brain changes were studied by Hematoxylin &amp; Eosin staining. Serum corticosterone level has increased significantly after cold water swimming stress (p&lt;0.01). Corticosterone was less in animals that received caloric vestibular stimulation in comparison with the animals which did not receive caloric vestibular stimulation (p&lt;0.05). Coldwater swimming stress had induced focal neuronal atrophy, nuclear pyknosis with congested blood vessels and infiltration of mononuclear inflammatory cells in the hippocampus and hypothalamus. Stressed animals that received caloric vestibular stimulation recovered well and showed the cerebral cortex with the normal neuroglial arrangement. Hypothalamus showed normal morphology and the hippocampus showed a pyramidal layer with a normal thickness in comparison to the animals which did not receive caloric vestibular stimulation. We conclude Caloric vestibular stimulation was effective in reversing the cold-water stress-induced serum corticosterone and histopathological changes in the brain.