Mycoplasma pneumoniae is a common pathogen of respiratory infection. Macrolides antibiotic is the first drug in treating children mycoplasma pneumoniae. Restently Mycoplasma pneumoniae shows resistance to macrolides antibiotic. Traditional Chinese medicine has more advantages in it. The paper summarizes drug resistance of mycoplasma pneumoniae and mechanisms research of traditional Chinese medicine.

Objective To study the role of calcitonin gene-related peptide(CGRP)and vasoactive intestinal peptide(VIP)in the pathogenesis of alopecia areata(AA).Methods Radioimmunoassay(RIA)was used to measure the levels of CGRP and VIP in plasma from30patients with AA and20normal controls.Immunohistochemistry was employed to detect the expression of CGRP and VIP in lesions of21patients with AA and16normal scalps.Results①The plasma levels of CGRP in progressing stage of AA(142.63?67.95pg/mL)were significantly lower than those in stable stage of AA(197.33?67.15pg/mL)and in normal controls(188.40?72.95pg/mL).②The plasma levels of VIP in progressing stage of AA(105.94?55.42pg/mL)were significantly lower than those in stable stage of AA(156.86?47.37pg/mL)and in normal controls(176.44?84.70pg/mL).③The expression of CGRP and VIP was significanly decreased in lesions of AA than that in normal scalps.Conclusion These findings indicate that CGRP and VIP may play a role in the pathogenesis of alopecia areata.

Objective To investigate the relationships among free triiodothyronine( FT3 ), free thyroxine (FT4 ), and thyroid-stimulating hormone( TSH) in both plasma and breast milk of patients with thyroid diseases. Methods A total of 102 female subjects with hyperthyroidism(GD), normal thyroid function(NC), and Hashimoto′s hypothyroidism(HT or hypothyroidism)were enrolled. Their plasma and breast milk were collected for measurement of FT3 and FT4 , and TSH. Meanwhile, 11 infants of patients with hyperthyroidism and another 11 infants of patients with hypothyroidism were selected, blood FT3 , FT4 , and TSH content were determined during lactating period and 2 months after lactation. Results (1) FT3 and FT4 contents in breast milk among 3 groups were different[(1. 48 ± 0. 81), (7. 79 ± 3. 56), and (0. 77 ± 0. 42)pg/ ml; (2. 94 ± 1. 43), (14. 78 ± 7. 40), and (1. 51 ± 0. 40)pg/ ml, P<0. 05], TSH in breast milk was similar between hyperthyroidism and normal groups(P>0. 05). (2) FT3 ratio of breast milk to plasma of the hyperthyroidism group was different to other 2 groups(0. 42 ± 0. 04 vs 0. 35 ± 0. 03, 0. 36 ± 0. 03, P<0. 05), but no difference existed in FT4 and TSH among 3 groups(both P>0. 05). (3)Blood FT3 , FT4 , and TSH contents from infants of patients with hyperthyroidism and hypothyroidism were different, both during lactating period and 2 months after lactation[(5. 06 ± 1. 76)vs (6. 51 ± 2. 23)pg/ ml, (17. 39 ± 2. 78)vs (19. 87 ± 3. 26)pg/ ml, (1. 34 ± 1. 33)vs (0. 74 ± 0. 78)mIU/ L; (1. 43 ± 0. 74)vs (1. 83 ± 0. 91)pg/ ml, (4. 28 ± 1. 55)vs (5. 00 ± 1. 75)pg/ ml, (6. 48 ± 2. 70) vs (5. 49 ± 2. 39) mIU/ L; all P<0. 05]. (4) FT3 and FT4 contents were positively correlated in plasma and breast milk(all P<0. 05), while TSH contents were positively correlated only in hypothyroidism group(P<0. 05). Conclusion FT3 , FT4 , and TSH in blood and breast milk are correlated.

Purpose To explore the pathological features of angioimmunoblastic T-cell lymphoma(AITL)with bone marrow involvement and to improve awareness of bone marrow infiltration in AITL.Methods The tissue morphology of 32 cases of AITL with bone marrow involvement was retrospectively analyzed.Im-munohistochemistry using the EnVision method and ten-color flow cytometry were conducted to detect AITL-related immune markers.T cell clonality was analyzed through T cell receptor(TCR)gene rearrangement.Results The predominant pat-terns of tumor cell infiltration were nodular(20/32,62.5％)and interstitial or small clusters(10/32,31.3％).The nodules showed a mixture of cellular components.In some cases,the fo-ci contained a mixture of cells with characteristic"granuloma-toid"changes.The tumor cells were mainly small to medium-sized lymphocytes with inconspicuous atypia.Some cases showed plasma cell proliferation.19 cases were subject to immunohisto-chemical staining,which revealed a low count of CD4-positive T cells,with an average of 8.4％.The positive rates of T follic-ular helper cells(TFH)markers were as follows:CD10(7/14,50.0％),BCL6(6/19,31.6％),PD-1(13/19,68.4％),and CXCL13(13/19,68.4％).In most cases,tumor cells showed co-expression of PD-1 and CXCL13,but the number of positive cells was less than 1％.Flow cytometry analysis was performed in 24 cases,among which 22 cases all consistently expressed cytoplasmic CD3(cCD3),CD5,CD4,and CD2,with varying degrees of CD10 expression.In some cases,there was a lack of expression of surface CD3(sCD3)(12/22,54.5％),while there was a lack of expression of CD7(8/22,36.4％).and no abnormal T cells were found in 2 cases.TCR gene rearrangement analysis was performed in 7 cases,with 3 cases showing TCR clonality.Conclusion AITL with bone marrow involvement exhibits a lower proportion of tumor cells and less atypia,making it prone to misdiagnosis.The presence of lymphocytic foci with mixed cellular components in the bone marrow can indicate bone marrow involvement in AITL.Flow cy-tometry detection of abnormal T cells(double positive for CD4 and CD10)strongly suggests bone marrow infiltration in AITL.A comprehensive diagnosis of bone marrow involvement in AITL re-quires consideration of bone marrow biopsy,flow cytometry,and TCR gene rearrangement analysis.