Pulmonary sialadenoma papilliferum and its mimics: what you need to know.

Pumonary salivary gland-type tumours (SGT) represent a small but distinct group of primary lung neoplasms. These types of tumours originate from the submucosal bronchial glands of the tracheobronchial tree. Pulmonary SGTs differ greatly in the incidence of individual tumours from salivary gland tumours of the head and neck. Additionally, the vast majority of pulmonary SGT are malignant. Recently, pathological diagnosis has significantly improved with the application of molecular diagnostic technologies. However, the current knowledge of benign SGTs is limited; moreover, tumour diversity and overlapping morphological features of SGT represent diagnostic challenges such as correct tumour categorisation and their accurate differentiation from malignant lesions. Compounding this inherent difficulty has been the recent introduction of new variants, including sialadenoma papilliferum (SP). Pulmonary SP is very rare, with limited reports available, and most of the initial diagnoses rendered so far were incorrect, resulting in inappropriate treatment. Several cases of SP have recently been reported. This review will serve to update practicing pathologists on the morphology, immunophenotype and molecular characteristics of SP and its mimics.

[Correlation of micropapillary patten, cribriform pattern and retraction clefting of endocervical adenocarcinoma with the Silva classification system and prognosis].

Objective: To investigate the relationship between micropapillary patten, cribriform pattern and retraction clefting of HPV associated endocervical adenocarcinoma and Silva classification and prognosis; and to validate the application and clinical significance of Silva system in endocervical adenocarcinoma. Methods: Cases of endocervical adenocarcinoma from January 2009 to November 2017 were selected from the Second Hospital of Jilin University and followed up. The morphologic characteristics of Silva classification, micropapillary patten, cribriform pattern and retraction clefting were observed and recorded. Inferential analysis was performed to compare clinicopathological variables data between pattern subgroups. Results: The study included 120 patients (ranging from 26 to 73 years) with an average age of (48.0±9.1)years. Silva A, B and C accounted for 9.2% (11/120), 18.3% (22/120) and 72.5% (87/120), respectively. Cases with micropapillary pattern accounted for 25.8%(31/120), of which six cases were Silva B and 25 cases were Silva C. Cases with cribriform pattern accounted for 53.3%(64/120), including three cases of Silva A, 17 cases of Silva B and 44 cases of Silva C. Retraction clefting occurred in 28.3%(34/120) cases, all were Silva C. The three morphologic features were associated with lymph node metastasis (P<0.05). Univariate analysis showed that micropapillary pattern was related to prognosis of endocervical carcinoma (P<0.05), while cribriform pattern, retraction clefting and Silva classification showed no correlation with overall survival and disease-free survival. Conclusions: The suggestion is revising the Silva C criteria by adding papillary patten and retraction clefting as factors and expanding the Silva pattern system to include more histologic variants. The Silva system is helpful to select appropriate operation before surgery, but its prognostic value requires further evaluation.

Clinicopathological features and course of cutaneous protothecosis.

BACKGROUND: Protothecosis is an uncommon infection caused by the achlorophyllic algae found more commonly in tropical areas. Only a limited number of cases have been reported. OBJECTIVE: We aimed to evaluate the clinicopathological features and treatment outcomes of cutaneous protothecosis. METHODS: We retrospectively identified 20 pathology-confirmed cases of cutaneous protothecosis based on skin biopsies in two tertiary medical centres in Taiwan from 1997 to 2015. RESULTS: The age of the patients at the time of diagnosis ranged from 48 to 85 years (mean age of 74 years). All lesions developed on the limbs. Twelve (60%) patients had adrenal insufficiency, but no patients had active malignancy at diagnosis. Interestingly, four (20%) patients had concurrent scabies infestation. Clinically, most lesions were erythematous plaques studded with punctate ulcers. Microscopically, the most common finding was granulomatous inflammation. Nineteen (95%) cases were successfully treated with itraconazole for 14-148 days with only one case of recurrence. Concomitant scabies should be suspected if pruritus is recalcitrant despite itraconazole treatment. CONCLUSION: Despite its rarity, cutaneous protothecosis has become more significant due to an increased prevalence of immunocompromised individuals. Steroid overuse or iatrogenic adrenal insufficiency predisposes individuals to high-risk infections. Neglecting the disease leads to a chronic and incurable state. Protothecosis should be suspected in chronic eczematous and ulcerative plaques on the limbs refractory to conventional antibacterial and antiviral treatments, especially in patients with adrenal insufficiency. Clinical suspicion should be confirmed by skin biopsies, and confirmed cases can be successfully treated with itraconazole.

[To evaluate the clinicopathologic characteristics and outcome of tumor cells spreading through air spaces in patients with adenocarcinoma of lung].

Objective: To investigate the clinicopathologic features, molecular characteristics and prognosis of spread through air space (STAS) in patients with adenocarcinoma of the lung. Methods: Two hundred and eighty-eight lung adenocarcinoma patients with complete clinicopathologic and follow-up data were included. The patients were divided into STAS positive (178 cases) and negative (110 cases) groups.EGFR and KRAS gene mutations were detected by amplification refractory mutation system (ARMS), and ALK and ROS1 gene fusion were detected by fluorescence in situ hybridization method. The relationship between STAS and clinicopathologic, molecular features, and patient outcome was analyzed. Results: STAS was present in 61.8%(178/288) of lung adenocarcinomas. The positive rate of STAS in tumors >3 cm was significantly higher than that in tumors ≤3 cm (P=0.009), and was significantly higher in tumors with pleural invasion (P<0.01), venous invasion (P<0.01), lymphatic invasion (P<0.01), perineural invasion (P=0.029) and tumors with necrosis (P<0.01). STAS was also correlated with tumor recurrence (P<0.01) and advanced pathologic TNM stage (P=0.002). There was no significant correlation with patients' gender, age and smoking history. Histologically, STAS was present in 58.0%(91/157), 67.6%(50/74), 2/6, 64.3%(27/42) and 8/9 of acinar, papillary, lepidic, solid and micropapillary adenocarcinomas, respectively. In addition, the positive rates of STAS in tumor with micropapillary (>5%) and without micropapillary pattern were 80.9%(55/68) and 55.9%(123/220), respectively (P<0.01). STAS was significantly higher in EGFR negative group (P=0.034), ALK gene rearrangement group (P=0.003) and ROS1 gene rearrangement group (P=0.012), but there was no significant correlation with KRAS mutation. Univariate survival analysis showed that patients with STAS had a shorter progression-free survival (PFS, P<0.01) and overall survival (P=0.013). Multivariate analysis confirmed that STAS was an independent predictor of PFS in lung adenocarcinoma patients (HR: 2.749, 95%CI: 1.550-4.876, P=0.001). Conclusions: The presence of STAS in lung adenocarcinoma suggests high risk of recurrence and invasion and is thus an important prognostic factor. In addition, STAS is associated with EGFR mutation, ALK and ROS1 gene rearrangement.

Investigation of the association between interleukin-10 polymorphisms and risk of acute pancreatitis in a Chinese population.

We conducted a case-control study to investigate the possible association between three common single nucleotide polymorphisms in interleukin-10 (IL-10) and the development of acute pancreatitis in a Chinese population. Between January 2013 and December 2014, 255 patients with acute pancreatitis and 255 control subjects were recruited for the study. Genotyping of IL-10 rs1800896, rs1800871, and rs1800872 was performed using polymerase chain reaction coupled with restriction fragment length polymorphism. Using logistic regression analysis, we found that the AA genotype of IL-10 rs1800896 was correlated with an increased risk of acute pancreatitis in a codominant model (OR = 2.44, 95%CI = 1.28-4.77). In a dominant model, we found that the GA+AA genotype of IL-10 rs1800896 was associated with an elevated risk of acute pancreatitis (OR = 1.51, 95%CI = 1.05-2.18). In a recessive model, the AA genotype of IL-10 rs1800896 was correlated with an increased risk of acute pancreatitis (OR = 1.98, 95%CI = 1.06-3.77). In conclusion, IL-10 rs1800896 was correlated with an increased risk of acute pancreatitis in codominant, dominant, and recessive models.

Microwave-assisted extraction and purification of chlorogenic acid from by-products of Eucommia Ulmoides Oliver and its potential anti-tumor activity.

An efficient method for the rapid extraction, separation and purification of chlorogenic acid (CGA) from by-products of Eucommia Ulmoides Oliver (E. ulmoides) by microwave-assisted extraction (MAE) coupled with high-speed counter-current chromatography (HSCCC) was developed. The optimal MAE parameters were evaluated by response surface methodology (RSM), and they were extraction time of 12 min, microwave power of 420 W, ethanol concentration of 75 %, solvent/sample ratio of 30:1 (mL/g), yield of CGA reached 3.59 %. The crude extract was separated and purified directly by HSCCC using ethyl acetate-butyl alcohol-water (3:1:4, v/v) as the two-phase solvent system. The 14.5 mg of CGA with the purity of 98.7 % was obtained in one-step separation from 400 mg of crude extract. The chemical structure of CGA was verified with IR, ESI-MS analysis. Meanwhile, the purified CGA extract was evaluated by MTT assay and results indicate that CGA extract exhibited potential anti-tumor activity for AGS gastric cancer cell.

Activation of proacrosin accompanies upregulation of sp32 protein tyrosine phosphorylation in pig sperm.

This study investigated the relationship between acrosin activation and pig sperm proacrosin binding protein (sp32) phosphorylation levels. Differently processed pig spermatozoa (fresh semen sperm, capacitation sperm, acrosome reaction sperm, capacitation-like sperm, and thawed sperm) were subjected to sodium dodecyl sulfate polyacrylamide gel electrophoresis and Western blot analysis. The fresh semen and capacitation sperm groups both produced proacrosin protein bands of 55 kDa; however, the result of the fresh semen sperm group was clearer than that of the capacitation sperm group. The thawed sperm group showed a shallow strip at 55 kDa. The capacitation and acrosome reaction sperm groups produced obvious proacrosin protein bands at 35 kDa, and the strips of the capacitation sperm group were again clearer. A faint band was visible at 32 kDa in the acrosome reaction sperm group. The capacitation, thawed, and acrosome reaction sperm groups showed significant strips in sp32, and the bands of the acrosome reaction sperm group were shallower than those of the 2 other groups. The capacitation and thawed sperm groups produced significant strips at 40 kDa, and the capacitation sperm group produced an additional strip at 55 kDa. In conclusion, sp32 phosphorylation levels can promote proacrosin activation into the active acrosin.

Molecular characterization of dermatophytes of the Trichophyton mentagrophytes complex found in Taiwan with emphasis on their correlation with clinical observations.

BACKGROUND: Fungi of the Trichophyton mentagrophytes complex are important pathogenic dermatophytes capable of causing various human skin infections. There are many species and varieties involved in this complex. Due to morphological similarity and existing intermediate forms and variants, unequivocally separating these dermatophytes is not always straightforward, and sampling appropriate isolates for research is often troublesome. Communicating epidemiological statistics of these dermatophytes is greatly impeded because taxonomic schemes adopted by different research groups are inconsistent and hardly comparable. OBJECTIVES: To analyse the molecular types existing within isolates of the T. mentagrophytes complex in Taiwan and evaluate the applicability of the current taxonomy on these isolates. METHODS: Forty-eight isolates of the T. mentagrophytes complex were obtained from humans and animals (rabbit, guinea pig and hedgehog) in Taiwan. Sequences of ITS1-5.8S-ITS2 and b-tubulin gene regions of each isolate were used for molecular typing. RESULTS: Among the 48 isolates, 43 belonged to the T. interdigitale clade, including 21 of the anthropophilic strain and 22 of the zoophilic strain, and five belonged to the T. erinacei clade. No isolates of the T. mentagrophytes genotype were found. CONCLUSIONS: The isolates previously identified as T. mentagrophytes should be relabelled as T. interdigitale according to current taxonomy. Because the taxonomy is quite different from what it used to be, confusion in the nomenclature of the T. mentagrophytes complex is to be expected. The applicability of the current taxonomic concept may require further evaluation.

Correlations of 25-hydroxyvitamin D3 level in patients with ulcerative colitis with inflammation level, immunity and disease activity.

OBJECTIVE: To investigate the correlations between 25-hydroxyvitamin D3 (25-OHD3) level in patients with ulcerative colitis (UC) and inflammation level, immunity, disease activity. PATIENTS AND METHODS: The serum level of 25-OHD3, inflammation status, immunity level and disease activity in patients (n=122) with UC in our hospital from 2015 to October 2017 were evaluated and analyzed. RESULTS: The levels of inflammatory factors [C-reactive protein (CRP) and tumor necrosis factor-α (TNF-α)] in low 25-OHD3 group were higher than those in non-low 25-OHD3 group (p<0.01 and p<0.05), and both expressions of CRP and TNF-α in patients presented linearly negative correlations with the level of 25-OHD3 (r²=0.8351, r²=0.7298). There were no significant differences in the levels of immunoglobulin G (IgG) and complement C3 in low 25-OHD3 group compared with those in non-low 25-OHD3 group (p>0.05). There was an overall decreasing trend of 25-OHD3 level as disease activity increased, and there were statistically significant differences in the levels of 25-OHD3 in each group in remission period and mild, moderate and severe activity periods. The disease activity score of patients showed a linearly negative correlation with the level of 25-OHD3 (r²=0.8465). The level of 25-OHD3 in the observation group (treated with mesalazine combined with vitamin D) was increased with the time of medication, and the level was higher than that in the control group (treated with mesalazine only). CRP, TNF-α, and disease activity score in the observation group were decreased with the time of medication, and the level was lower than that in the control group. CONCLUSIONS: The level of 25-OHD3 in UC patients is linearly correlated with the level of inflammation and disease activity. At the same time, combined treatment with vitamin D improves the reducing level of inflammation and limits the disease activity. Therefore, 25-OHD3 can be used in the assessment of the level of inflammation and disease activity, and as a potential tool in the treatment.

A case of bilateral otomycosis associated with Aspergillus flavus and A. terreus in Taiwan.

Otitis externa caused by fungi (otomycosis) occurs more commonly in tropical areas with high moisture than in temperate regions. Bilateral otomycosis is, however, rarely reported. In a case of bilateral otitis externa in a 56-year-old male patient in Taiwan, direct microscopic examination of the cerumen as well as isolation of strains indicated the presence of two Aspergillus species being different in each of both ears. The species were identified by DNA sequence comparisons and additional morphological confirmation of diagnostic characteristics as Aspergillus flavus and Aspergillus terreus. The rarely reported occurrence of two Aspergillus species in otitis of the same patient deserves attention in other cases of otomycosis, particularly with respect to potentially different resistances of different species against antifungals. Treatment with nystatin/neomycin was not successful, but with clotrimazole was effective.