Clinicopathological Changes Research Articles

Correlation analysis of Ki67 changes with survival outcomes in breast cancer before and after neoadjuvant therapy based on residual cancer Burden grade

PurposeThis study aims to investigate the change of Ki67 value pre- and post-neoadjuvant therapy (NAT) and evaluate its potential value in predicting survival outcomes in different molecular subtypes of breast cancer. MethodsA total of 257 breast cancer patients who underwent NAT at Renmin Hospital of Wuhan University from July 2019 to Sep 2023 were included in this study. The Ki67 index of the patients was re-interpreted by two attending physicians, and the changes of Ki67 value pre- and post-NAT were compared. Chi-square test (χ2) and logistic regression were conducted to examine the correlation between various characteristics and the efficacy of NAT. Disease-free survival (DFS) was calculated using the Kaplan-Meier curve and compared using the log-rank test. ResultsPatients with higher histological grade, negative expression of estrogen receptor (ER) or progesterone receptor (PR), positive expression of human epidermal growth receptor 2 (HER2), higher pretreatment Ki67 index, absence of lymph node metastasis, and those with HER2 positive and triple-negative breast cancer were associated with improved efficacy of NAT. Our study identified that the optimal cut-off value for the changes in Ki67 index pre- and post-NAT related to the effectiveness of NAT was “-88.19 %” in whole chort, which was related to the aforementioned clinical characteristics. Besides, the optimal cut-off values for the luminal, HER2-enriched and triple-negative subtypes were “-91.83 %”, “-46.12 %” and “-81.67 %”, respectively. Survival analysis demonstrated that the changes in Ki67 value were significantly associated with DFS in the HER2-enriched and triple-negative subtype, but not in the luminal subtype. ConclusionsPreoperative clinicopathological features and changes in Ki67 value pre-and post-NAT can contribute to providing patients with a more accurate prognosis.

Evaluation of Leiomyoma: A Clinicopathological Study in a Tertiary Care Center in Kathmandu

Uterine leiomyoma is one of the common gynecological benign tumors. It is usually observed in female of reproductive age group and often presented with symptoms like abdominal pain, dysmenorrhea and fertility disorders. Hysterectomy and myomectomy are the procedure for management of uterine leiomyoma. The prime objective of our study was to evaluate the demographic distribution and clinicopathological changes in hysterectomy and myomectomy specimens with leiomyomas. A descriptive hospital based cross-sectional study was conducted in the Department of Pathology, Nepal Medical College Teaching Hospital (NMCTH), Nepal from May 2023 to October 2023. A total of 57 uterine leiomyoma samples received in the department of Pathology for histopathological examination were included in the study. Ethical approval for the study was obtained from Institutional Review Committee of NMCTH and informed consent was taken from each patient. The tissue biopsies were routinely processed and stained with Hematoxylin and Eosin (H and E). The observed findings were managed in MS Excel sheet and later analyzed using SPSS 17. The most common age group diagnosed with uterine leiomyoma was 41 to 50 years (64.9%). The leiomyomas were highly prevalent in women from Janajati community (47.4%). Pelvic pain, menorrhagia and bleeding disorders were the most frequent clinical manifestations. Intramural was the commonest site (77.2%) and the hyalinization was the most usual secondary changes (19.2%) found. The correlation between age distribution and site of leiomyoma, age distribution and secondary changes and site of leiomyoma and secondary changes were statistically not significant. However, detailed histopathological examination gives many information related to leiomyoma and it is necessary for the effective management.

Clinical pathology and molecular examination of Babesia spp. infection in dogs; Mashhad, Northeast Iran

This study aimed to fill a crucial gap in our understanding of Babesia infection in dogs in Mashhad, northeast Iran. We not only investigated the prevalence of Babesia species among dogs but also undertook a comprehensive comparison of clinical, hematological, and clinicopathological findings between infected and non-infected cases, a unique aspect of our research. Materials and methodsOur research was conducted with meticulous attention to detail. We randomly collected blood specimens from a diverse population of 150 dogs, including owned pets (n = 47), stray dogs (n = 66), and shelter dogs (n = 37), to ensure the reliability and representativeness of our findings. We then used microscopy and PCR to investigate Babesia spp. infection and analyzed various biochemical and hematological variables. ResultsThe overall prevalence of babesiosis was 15.3 % (23/150) by PCR and 2 % (3/150) by microscopy. Upon microscopic examination, two cases of large Babesia and one case of small-sized Babesia were identified. The sequencing results confirmed that the two dogs testing positive for large-sized Babesia species in this study were both infected with B. vogeli, exhibiting 100 % sequence identity.There was no association between infection and gender, while housing status (k = 37.294, p = 0.000) and age (k = 6.897, p = 0.021) significantly related to infection rate. Among laboratory variables, infection with Babesia spp. showed a remarkable association with Hct (k = 4.749, p = 0.025) and RBC count (k = 14.669, p = 0.000), which were significantly lower in infected dogs compared to non-infected dogs (p < 0.05). Aside from severe non-regenerative anemia observed in all three clinically infected cases, the most clinicopathological changes were observed in one B. vogeli-infected dog, including pancytopenia, azotemia, hyperphosphatemia, hyperkalemia, hypoglycemia, hypocholesterolemia, hyponatremia. ConclusionThis study reveals a higher-than-expected prevalence of canine babesiosis in Northeastern Iran, necessitating further investigation of tick vectors and Babesia spp. distribution. Notably, many infected dogs were asymptomatic, raising concerns about silent spread via carriers. Moreover, the high prevalence of infection in shelters highlights the need for more effective control strategies in these centers.

The clinical and pathological evaluation of patients with immunoglobulin A nephropathy by diffusion tensor imaging and intravoxel incoherent motion diffusion-weighted imaging.

To explore the efficacy of diffuse magnetic resonance imaging (MRI) for identifying clinicopathological changes in immunoglobulin A nephropathy (IgAN) patients. The study enrolled IgAN patients and healthy volunteers. IgAN patients were divided into Group 1 [estimated glomerular filtration rate (eGFR) ≥ 90 mL/min/1.73 m2], Group 2 (60 ≤ eGFR < 90 mL/min/1.73 m2), and Group 3 (eGFR < 60 mL/min/1.73 m2). Intravoxel incoherent motion diffusion-weighted imaging (IVIM-DWI) and diffusion tensor imaging (DTI) were performed via 3.0 T magnetic resonance. Diffuse MRI, clinical, and pathological indicators were collected and analysed. P < .05 was considered statistically significant. Forty-six IgAN patients and twenty-seven volunteers were enrolled. The apparent diffusion coefficient, diffusion coefficient (D), perfusion fraction (f), and fractional anisotropy (FA) were significantly different among IgAN subgroups and controls. These parameters were positively correlated with eGFR and negatively with creatinine, and inversely correlated with glomerular sclerosis, interstitial fibrosis, and tubular atrophy (all P < .05). They had significantly high area under the curve (AUC) for distinguishing IgAN patients from controls, while FA had the highest AUC in identifying Group 1 IgAN patients from volunteers. DTI and IVIM-DWI had the advantage of evaluating clinical and pathological changes in IgAN patients. DTI was superior at distinguishing early IgAN patients and might be a noninvasive marker for screening early IgAN patients from healthy individuals. DTI and IVIM-DWI could evaluate clinical and pathological changes and correlated with Oxford classification in IgAN patients. They could also identify IgAN patients from healthy populations, while DTI had superiority in differentiating early IgAN patients.

Unraveling the clinicopathological and molecular changes induced by neoadjuvant chemotherapy and endocrine therapy in hormone receptor-positive/HER2-low and HER2-0 breast cancer

The characterization and comparison of gene expression and intrinsic subtype (IS) changes induced by neoadjuvant chemotherapy (NACT) and endocrine therapy in hormone receptor-positive (HR+)/human epidermal growth factor receptor 2 (HER2)-low versus HR+/HER2-0 breast cancer (BC) has not been conducted so far. Most evidence on the association of HER2 status with pathologic responses and prognosis in HR+/HER2-negative BC is controversial and restricted to NACT-treated disease. Similarly, a temporal heterogeneity in HER2 status has been described only with NACT. We retrospectively recruited a consecutive cohort of 186 patients with stage I-IIIB HR+/HER2-negative BC treated with neoadjuvant therapy (NAT). Available diagnostic biopsies and surgical samples were characterized for main pathological features, PAM50 IS and ROR-P score, and gene expression. Associations with pathologic complete response, residual cancer burden-0/I, event-free survival (EFS) and overall survival (OS) based on HER2 status were assessed. Pre/post pathologic/molecular changes were analyzed in matched samples. The HER2-low (62.9%) and HER2-0 (37.1%) cohorts did not differ significantly in main baseline features, treatments administered, breast-conserving surgery, pathologic complete response and residual cancer burden-0/I rates, EFS, and OS. NAT induced, regardless of HER2 status, a significant reduction of estrogen receptor/progesterone receptor and Ki67 levels, a down-regulation of PAM50 proliferation- and luminal-related genes/signatures, an up-regulation of selected immune genes, and a shift towards less aggressive IS and lower ROR-P. Moreover, 25% of HER2-0 changed to HER2-low and 34% HER2-low became HER2-0. HER2 shifts were significant after NACT (P < 0.001), not neoadjuvant endocrine therapy (P= 0.063), with consistent ERBB2 mRNA level dynamics. HER2 changes were not associated with EFS/OS. HER2-low and HER2-0 status change after NAT in ∼30% of cases, mostly after NACT. Targeted adjuvant strategies should be investigated accordingly. Molecular downstaging with current chemo/endocrine agents and immunotherapy should not rely on HER2 immunohistochemical levels in HR+/HER2-negative BC. Instead, HER2-low-targeted approaches should be explored to pursue more effective and/or less toxic dimensional downstaging.

The BRAF V600E Mutation and Clinicopathological Changes Among Patients With Hashimoto thyroiditis, Papillary Thyroid Carcinoma With Hashimoto Thyroiditis, and Nodular Goiter.

The study aimed to investigate the BRAF V600E mutation and clinicopathological changes among patients with Hashimoto thyroiditis (HT), papillary thyroid carcinoma (PTC) with Hashimoto thyroiditis (HT), or nodular goiter (NG). A total of 87 patients with the BRAF V600E mutation who were diagnosed with HT (including with hyperplasia dysplasia), PTC with HT, and PTC with NG were enrolled. Clinical data, concentrations of antithyroglobulin antibodies (TGAb) and thyroid microsomal antibodies (TMAb) in the serum thyroid-function levels, and the result presence of the BRAF V600E mutation were retrospectively analyzed. There were significant differences in the BRAF V600E mutation rates between the HT and PTC with HT groups (P <0.05) and the HT and PTC with NG groups (P <0.05), whereas no significant difference was found between the PTC with HT and PTC with NG groups. There was no difference in incidences of PTC between HT with elevated TGAb and TMAb group and those with baseline levels. The incidence of multifocal PTC was higher in the PTC with HT group; however, the difference was not significant. Our findings documented that BRAF mutation distinguished between the benign HT and the malignant PTC groups. The serum levels of TGAb and TMAb autoantibodies did not directly correlate with PTC in the background of HT. HT and NG may similarly contribute to the pathogenesis of PTC.

Incidence of Various Types of Bleeding Disorders Associated with Canine Vector Borne Diseases in Chennai, Tamil Nadu, India

Background: Animals with various stages of bleeding tendencies are often presented with obvious blood loss and life threatening complications, although some animals are relatively stable, showing only minimal clinical signs. Canine vector-borne diseases and associated bleeding disorders are commonly encountered in routine practice with high morbidity and mortality. Diagnosis, therapeutic outcome and management of bleeding disorders have always been challenging. The objective is to study the incidence of various types of bleeding disorders with their clinical features in CVBD in the city of Chennai, Tamil Nadu. Methods: During the study period (2018-2020) a total of 76, 051 dogs were presented to the Madras Veterinary College Teaching Hospital, Chennai. Sixteen thousand five hundred and twenty nine (16529) dogs were presented with signs of bleeding disorders. Dogs affected with vector borne diseases had various stages of bleeding tendencies (1593 dogs) were subjected to detailed clinical, haematological, biochemical and coagulation profile assessments. Under each etiological group, the dogs were further divided into three groups based on various stages bleeding disorders in order to evaluate the clinicopathological changes in dogs. Result: The observed incidence of bleeding disorders due to canine vector borne diseases in this study were Babesiosis 41.87 per cent, Ehrlichiosis 52.7 per cent and hepatozoonosis 5.5 per cent. The incidence of Ehrlichiosis, Babesiosis and H. canis in the study population was found to be 5.2 per cent, 4.04 per cent and 0.53 per cent. Dogs due to E. canis, 51 per cent had anaemia and thrombocytopenia, 26.1 per cent had pancytopenia and 22.9 per cent had pancytopenia and DIC. Dogs due to B. gibsoni, 47.7 per cent had anaemia and thrombocytopenia, 28.5 per cent had pancytopenia and 23.8 per cent had pancytopenia and DIC.

Use of orally administered dexmedetomidine to induce emesis in cats.

This case series describes the use of orally administered dexmedetomidine at a dose of 20 µg/kg to induce emesis in six cats. Emesis was successfully induced in 5/6 cats, with each of the cats vomiting once. The reasons for inducing vomiting included known or suspected ingestion of lilies, onions, acetaminophen (paracetamol) or acetylsalicylic acid. Four of the five cats in which emesis induction was successful did not develop any clinical signs of toxicity associated with the toxin ingested; the fifth cat developed clinicopathological changes consistent with acetaminophen toxicity. All six cats exhibited moderate to profound sedation, as expected, but no other adverse effects were documented. Induction of emesis in cats is notoriously difficult. This case series describes a novel route of administration of dexmedetomidine, a commonly available medication, with a high success rate observed for inducing emesis in this group of cats.

Retrospective Study of Clinicopathological Changes and Prediction Model for Canine Vascular Neoplasms.

Vascular neoplasms, including hemangiosarcoma (HSA) and hemangioma (HMA), are more common in dogs than other domestic animal species; however, comprehensive laboratory screening tests for early diagnosis are currently limited. The aims of this study were to investigate general signalments, anatomic locations, and clinicopathological abnormalities of dogs diagnosed with vascular neoplasms and to determine the diagnostic significance of these abnormalities. Retrospective data of dogs with HMA, HSA, and healthy dogs were analyzed. Dogs with HMA and HSA were seniors, with mixed breeds being most affected. HMA affected predominantly non-visceral sites, while HSA was more common in visceral sites, particularly the spleen. In multivariate model analyses, the odds of HMA diagnosis were 5.5 times higher in anemic dogs and 33.0 times higher in lymphopenic dogs compared to dogs without the abnormalities. The odds of HSA diagnosis were 42.5 times higher in anemic dogs, 343 times higher in lymphopenic dogs and 92.7 times higher in dogs with hyperfibrinogenemia compared to dogs without the abnormalities. The study suggested that these identified abnormalities were nonspecific and commonly observed in various chronic diseases, and hence their combination with clinical information, such as diagnostic imaging and histopathology, is important to facilitate a more precise diagnosis of canine vascular neoplasms.

Reproductive endocrine changes in relation to calcium metabolism in layers experimentally infected with Escherichia coli

Aim: This study determined calcium metabolism-related reproductive endocrine changes associated with Escherichia coli (E. coli) infection in layer chickens. Methods: A total of 20 laying chickens (20 weeks old) were acquired and assigned, into two groups (infected and controlled) of 10 layers each. Birds in the infected group were challenged with 0.5 ml of bacterial aliquot containing 109 colony forming units (CFU) of the bacteria, intratracheally. Two (2) ml of blood were collected from each bird in both groups and used for biochemical analyses. Results: Escherichia coli infection in layers caused decrease in mean oestrogen profile from day 6 reaching the lowest value (332.6 ± 5.41 pg/ml) on day 28 post infection (pi) that differed significantly (p &lt; 0.05) from the corresponding value in the control group. The mean plasma progesterone profile and mean plasma calcium concentration in the infected group decreased from day 4 and 6 pi, respectively, and reached the lowest significant (p&lt;0.05) values (94.8 ± 1.98 pg/ml and 1.61 ± 0.11 mmol/L, respectively) on day 28 and 14 pi, respectively, which was significantly different (p &lt; 0.05) from that in their corresponding control group. The mean plasma phosphate concentration and mean parathormone profile increased from day 6 to a significantly (p &lt; 0.05) higher levels (1.64 ± 0.12 mmol/L and 31.04 ± 0.80 pg/ml, respectively) on day 14 and 21, pi respectively. Conclusion: The E. coli-induced reproductive endocrine and clinicopathological changes recorded in present study may be responsible for the reported reproductive disorders in layers infected with E. coli.

The utility of the 21-gene Oncotype DX Breast Recurrence Score® assay in node-negative breast cancer patients - the final analysis of the Polish real-life survey PONDx.

Breast cancer (BC) is among the most frequently diagnosed malignant tumours in females. The optimal treatment of early HR+, HER2-, and lymph node-negative (N0) BC remains challenging. Since individual assessment of recurrence risk and expected benefits from adjuvant chemotherapy (CT) based on clinicopathological features alone appear inadequate, gene expression profiling tests have been developed. This study aimed to evaluate the impact of Oncotype DX Breast Recurrence Score® (Oncotype DX Breast RS) test results on physicians' decisions concerning adjuvant CT in the Polish population. The PONDx survey investigated the real-life use of Oncotype DX Breast RS in 204 pa- tients with HR+, HER2-, N0 BC in 8 clinical reference centres in Poland. Data on clinicopathological features and changes in treatment based on the Oncotype DX Breast RS test were collected. Chemotherapy plus endocrine therapy (ET) was initially recommended in 44.8% and ET alone in 55.2% of patients. After the introduction of recurrence score results, the recommendation for CT decreased significantly: relative reduction of 25.5% (95% CI: 11.7-52.3) and absolute reduction of 11.4% (95% CI: 1.9-21.0). Among patients initially recommended for CT, treatment was de-escalated in 62.2%; conversely, among patients initially recommended for ET alone, 29.7% were escalated to CT after testing. The relative reduction was especially pronounced in post-menopausal patients (29.6%) and in those with lobular BC (42.9%). The Oncotype DX Breast RS result significantly influenced treatment decisions, with 44.3% of patients changing treatment, thus avoiding overtreatment or undertreatment. The Oncotype DX Breast RS test improves patient management and increases physician confidence in treatment recommendations.

Electroacupuncture combined with wet compress formula ameliorates upper limb dysfunction associated with stroke: A retrospective analysis of 126 cases

ObjectivesUpper limb motor dysfunction (ULMD) is one of the most common complications of ischemic stroke (IS). Electroacupuncture (EA) is a noninvasive procedure that has the potential to manage symptoms associated with IS. To improve the treatment effects of EA, our hospital performed combined treating strategy against ULMD by subjecting IS patients to both EA and external application of wet compress formula (WCF). In the current analysis, the potential improving effects of the combined treatment against ULMD were evaluated. Materials and methods126 patients with ULMD induced by IS handled with normal rehabilitation treatment, EA treatment alone, and EA combined with WCF respectively were enrolled in the current analysis. The clinicopathological information and changes in motor function assessment scales, including Visual analogue (VAS), Fugl-Meyer assessment-upper extremity (FMA-UA), and Modified Barthel index (MBI) scales were collected and the difference between different treating strategies was assessed. ResultsAll the treating strategies improved the values of VAS, FMA-UA, and MBI scales, with combined treating strategy showing the strongest improving effects, and traditional rehabilitation strategy showing the weakest effects. Moreover, the assessment of hand and wrist motor function by FMA-UE also showed that the combined treatment strategy has significantly stronger improving effects against ULMD compared with other strategies. ConclusionsThe current analysis showed that the use of external application of WCF could substantially increase the treating effects of EA on ULMD induced by IS without severe side effects, which could guide the future clinical management of motor dysfunction.

Diabetes can increase the prevalence of EBV infection and worsen the prognosis of nasopharyngeal carcinoma

Epstein‒Barr virus (EBV) infection is a primary oncogenic factor of nasopharyngeal carcinoma (NPC) that elicits epithelial-mesenchymal transition (EMT). Although diabetic patients are more susceptible to various infectious diseases, the pathological association with virus-related NPC has not yet been clarified. Herein, we evaluated the influence of diabetes on the clinicopathological changes of 70 patients with NPC. Disease-specific survival (DSS) modified by viral infection was also analysed. The proportion of NPC patients with diabetes was 32.9% (23/70 cases), and 91.3% (21/23 cases) were infected with EBV detected by EBER-I in situ hybridisation. NPC with diabetes showed an effect on EMT evaluated by immunostaining for E-cadherin and vimentin, which was correlated with HbA1c levels. Receiver operating characteristic (ROC) curve analysis determined a HbA1c level of 6.5% as the cut-off value for primary disease death at 2 years [area under the curve (AUC) 0.76; sensitivity 0.64; and specificity 0.81]. High HbA1c levels (≥6.5%) significantly increased the number of lymph node metastases in NPC compared to low HbA1c levels (<6.5%, p<0.01). Diabetic NPC patients had a significantly poorer prognosis than all non-diabetic patients (DSS, 72 months vs not reached, p<0.05). Diabetic EBV-positive NPC patients had a significantly poorer prognosis than non-diabetic EBV-positive patients (DSS, 35 months vs not reached, p<0.01). Multivariate analysis using the Cox proportional hazards model also suggested that HbA1c ≥6.5% was a significant factor in poor prognosis, with a hazard ratio of 6.84 (p<0.05). Collectively, our results revealed for the first time a high prevalence of EBV infection, poor prognosis and the importance of proper glycaemic control in diabetic NPC patients.

Evaluation of RNA Based Biomarker Expression in Acute Kidney Injury after ESWL

Background Extracorporeal shock wave lithotripsy (ESWL) was introduced more than three decades as an authentic modern modality for the treatment of urinary stone disease. It is considered first choice of treatment for nearly all kinds of urinary tract calculi. Objective To evaluate the damage effect of ESWL on kidney tissue by measuring non-coding lncRNA profile in serum before and after ESWL session and assess their usefulness as diagnostic biomarkers for AKI and the relationship between the selected RNA based biomarker panel and clinicopathological changes of patients. Patients and Methods It is a prospective randomized control study assessing the damage effect of ESWL on kidney tissue by measuring non-coding lnc-RNA profile in serum before and after ESWL session(s) in 20 patients and compare it to control group of 20 healthy persons with no known urogenital disease and no known history of urologic pathology. Results The results favored outcomes of pre procedure lncRNA showed a statistically significant reduction after 48 hours after the procedure (p = 0.017). In comparison with control group the lncRNA showed a statistically significant difference between patients and controls at 2 hours and 48 hours after the procedure (p = 0.03 and 0.01, respectively). Conclusion Although ESWL is considered a safe and effective procedure in the treatment of renal stone disease yet it may cause acute renal injury. In this study, serum lncRNA rises significantly following acute renal injury caused by ESWL. Hence, serum lncRNA together with other kidney function tests as serum urea, creatinine can be used as acute renal injury markers following ESWL in patients with renal stone disease.

Comparative Clinicopathological Changes Associated with Experimental Streptococcus agalactiae and Streptococcus iniae Cohabitation Infection in Red Hybrid Tilapia (Oreochromis niloticus × Oreochromis mossambicus)

Streptococcus agalactiae and Streptococcus iniae are the two main pathogens causing streptococcosis in fish. This study compares the clinicopathological changes in red hybrid tilapia experimentally infected with S. agalactiae or S. iniae. A total of 180 tilapias were divided into six groups. Groups 1A, 2A, and 3A were inoculated intraperitoneally with sterile phosphate-buffered saline, S. agalactiae, and S. iniae. Fish of Groups 1A, 2A, and 3A were then immediately allowed to cohabitate with fish of Groups 1B, 2B, and 3B, respectively. All fish were observed at 6-hr intervals for 120 hr before surviving fish were euthanized. The spleen, liver, and brain samples were collected for bacterial isolation and histopathology. Clinical signs were developed at 72 hr in Groups 2A and 3A and 96 hr in Groups 2B and 3B. Group 2A showed the highest clinical score (P&lt;0.05). Significantly (P&lt;0.05), more cohabitating fish (Groups 2B) were infected by S. agalactiae compared to S. iniae (Group 3B) at 55.0±0.0 and 43.70±1.25%, respectively. The mortality rate was significantly (P&lt;0.05) higher for Groups 2A and 2B than other groups. The gross lesions were significantly (P&lt;0.05) more common in fish of Group 2A. Histopathologically, encephalitis was observed in fish infected with S. iniae of Groups 3A and 3B, while meningoencephalitis was observed in fish infected with S. agalactiae of Groups 2A and 2B. The findings suggest that S. agalactiae is more pathogenic than S. iniae, producing slightly different histopathological lesions in the brain.

Quantification of the renal sinus fat and exploration of its relationship with ectopic fat deposition in normal subjects using MRI fat fraction mapping.

To determine the renal sinus fat (RSF) volume and fat fraction (FF) in normal Chinese subjects using MRI fat fraction mapping and to explore their associations with age, gender, body mass index (BMI) and ectopic fat deposition. A total of 126 subjects were included in the analysis. RSF volume and FF, visceral adipose tissue (VAT) and subcutaneous adipose tissue (SAT) area, and hepatic and pancreatic FFs were measured for each subject. The comparisons in gender were determined using two-tailed t-tests or the nonparametric Mann-Whitney U-test for normally or non-normally distributed data for continuous variables and the chi-square test for categorical variables. Comparisons of RFS volume and FF between right and left kidneys were determined using paired sample t-tests. Multivariable logistic models were performed to confirm whether RSF differences between men and women are independent of VAT or SAT area. When parameters were normally distributed, the Pearson correlation coefficient was used; otherwise, the Spearman correlation coefficient was applied. The RSF volumes (cm3) of both kidneys in men (26.86 ± 8.81 for right and 31.62 ± 10.32 for left kidneys) were significantly bigger than those of women (21.47 ± 6.90 for right and 26.03 ± 8.55 for left kidneys) (P < 0.05). The RSF FFs (%) of both kidneys in men (28.33 ± 6.73 for right and 31.21 ± 6.29 for left kidneys) were significantly higher than those of the women (23.82 ± 7.74 for right and 27.92 ± 8.15 for left kidneys) (P < 0.05). The RSF differences between men and women are independent of SAT area and dependent of VAT area (except for right RSF volume). In addition, the RSF volumes and FFs in both kidneys in the overall subjects show significant correlations with age, BMI, VAT area, hepatic fat fraction and pancreatic fat fraction (P < 0.05). However, the patterns of these correlations varied by gender. The RSF volume and FF of left kidney were significantly larger than those of the right kidney (P < 0.05). The association between renal sinus fat and ectopic fat deposition explored in this study may help establish a consensus on the normal values of RSF volume and FF for the Chinese population. This will facilitate the identification of clinicopathological changes and aid in the investigation of whether RSF volume and FF can serve as early biomarkers for metabolic diseases and renal dysfunction in future studies.

Adopting complementary and integrative medicine: Effects of Antox® and Bactofort® administrations on clinico-pathological changes in pullets inoculated with a very virulent infectious bursal disease virus

This study evaluated the ameliorative effects of Antox® and Bactofort® on clinico-pathological changes in ISA Brown chicks inoculated with a very virulent infectious bursal disease virus (vvIBDV). Two hundred (200) ISA Brown day-old chicks were randomly assigned into four groups (A to D) of 50 birds each. Groups A, and B were administered with Antox®, and Bactofort®, respectively from day-old to 42 days of age, and inoculated with vvIBDV at 28 days of age. Groups C, and D served as positive, and negative controls, respectively. Clinical signs, morbidity and mortality rates, gross and histopathological changes were determined. The clinical signs were moderate in groups A and B, but severe in group C and absent in group D by 7 days post-inoculation (dpi). Morbidity and mortality rates were lower in groups A and B compared to C. Gross and histopathological lesions were less severe in groups A and B compared to C. Antox® and Bactofort® ameliorated the negative effects of vvIBDV. Antox® and Bactofort® could be recommended for use in vvIBDV outbreaks to ameliorate the negative effects due to the infection.

In vitro and in vivo scolicidal action of pumpkin seed oil alone or combined with nitazoxanide and their alleviative effects on clinicopathological changes in experimentally infected rats with hydatid cyst protoscolices

In vitro and in vivo scolicidal action of pumpkin seed oil alone or combined with nitazoxanide and their alleviative effects on clinicopathological changes in experimentally infected rats with hydatid cyst protoscolices

Pathological features of early gastric cancer and its background mucosa after eradication of Helicobacter pylori and their implications for biopsy diagnosis

Objective: To investigate the clinicopathological changes of early gastric cancer, especially its background mucosa, after the eradication of Helicobacter pylori (H. pylori), and to investigate the causes of underdiagnosis in preoperative biopsy pathology. Methods: Ninety cases of early gastric cancer after H. pylori eradication and 120 cases of endoscopic submucosal dissection (ESD) specimens without H. pylori eradication and their corresponding biopsy specimens were collected from Beijing Friendship Hospital Affiliated to Capital Medical University during 2016-2021. The clinicopathological data of the patients were analyzed, and the histopathological characteristics and immunophenotypic results compared. Results: Compared with the early gastric cancer without H. pylori eradication history, the histopathological type of early gastric cancer after H. pylori eradication was differentiated adenocarcinoma, with staggered distribution of cancerous and non-cancerous epithelium in the tumor area. The morphologic characteristics of gastric mucosa in the background of early gastric cancer after H. pylori eradication, were distinctive, including widening of the opening of enterosylated glandular ducts, serrated change of luminal margin, eosinophilic and microvesicular cytoplasm of enterosylated epithelium. Low-grade atypia existed in gastric cancer epithelial cells after sterilization, which might lead to underdiagnosis or missed diagnosis in biopsy pathology. Conclusions: Early gastric cancer and its background mucosa after H. pylori eradication have unique morphological characteristics, which can be used as a clue for pathological diagnosis, improve the accuracy of biopsy pathology and reduce the underdiagnosis.

55P Clinicopathological and molecular changes induced by neoadjuvant therapy (NAT) in hormone receptor-positive (HR+)/HER2-low vs HER2 0 breast cancer (BC)

55P Clinicopathological and molecular changes induced by neoadjuvant therapy (NAT) in hormone receptor-positive (HR+)/HER2-low vs HER2 0 breast cancer (BC)