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He ZL, Li J, Sui ZY, Zhang JL, An LE, Liu LL, Zhang CL, Yao YY, Qiu SL, Li XD. [Application and clinical efficacy of ultrasound debridement method in residual burn wounds]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2022; 38:1034-1039. [PMID: 36418260 DOI: 10.3760/cma.j.cn501120-20211123-00396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To investigate the application and clinical efficacy of ultrasound debridement method in residual burn wounds. Methods: A retrospective cohort study was conducted. From August 2017 to August 2021, 64 patients with residual burn wounds who met the inclusion criteria were admitted to the 980th Hospital of the Joint Logistic Support Force of PLA. According to the debridement method adopted for the residual wounds, the patients were divided into ultrasound debridement group (34 cases, 22 males and 12 females, aged (31±13) years) and traditional debridement group (30 cases, 19 males and 11 females, aged (32±13) years). After the corresponding debridement, the wounds of patients in the two groups were selected for stamp skin grafting or large skin grafting according to the wound site and skin donor status. For unhealed wounds after stage Ⅰ surgery, secondary debridement and skin grafting were be performed, with the wound debridement methods in the 2 groups being the same as those of stage Ⅰ, respectively. On postoperative day 3, drug-sensitive test was used to detect the bacteria in the wound and the positive rate of bacteria was calculate. On postoperative day 7, the survival rate of skin slices in wound and the incidence of subcutaneous hematoma were calculated. At discharge, wound healing time and debridement times of patients were counted, and the secondary debridement rate was calculated. Data were statistically analyzed with independent sample t test or chi-square test. Results: On postoperative day 3, the wounds in ultrasound debridement group were infected with Staphylococcus aureus in 2 cases and Pseudomonas aeruginosa in 2 cases, and the wounds in traditional debridement group were infected with Staphylococcus aureus in 5 cases, Pseudomonas aeruginosa in 3 cases, Acinetobacter baumannii in 1 cases, Klebsiella pneumoniae in 1 cases, and Enterobacter cloacae in 1 cases. The positive rate of bacteria of wound in ultrasound debridement group was significantly lower than that in traditional debridement group (χ2=5.51, P<0.05). On postoperative day 7, the survival rate of skin grafts in ultrasound debridement group was (92±5) %, which was significantly higher than (84±10) % in traditional debridement group (χ2=6.78, P<0.01); the incidence of subcutaneous hematoma in ultrasound debridement group was 17.6% (6/34), which was significantly lower than 40.0%( 12/30) in traditional debridement group, χ2=3.94, P<0.05. At discharge, the wound healing time in ultrasound debridement group was (11.0±2.0) d, which was significantly shorter than (13.0±3.1) d in traditional debridement group (t=3.81, P<0.01); the secondary debridement rate of wounds in ultrasound debridement group was 2.9% (1/34), which was significantly lower than 20.0% (6/30) in traditional debridement group (χ2=4.76, P<0.05). Conclusions: Ultrasound debridement method can significantly reduce the bacterial load of residual burn wounds, reduce postoperative hematoma formation, and promote the survival of skin grafts to shorten the course of disease of patients.
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Affiliation(s)
- Z L He
- Department of Burn and Plastic Surgery, the 980th Hospital of the Joint Logistic Support Force of PLA, Shijiazhuang 050091, China
| | - J Li
- Department of Burn and Plastic Surgery, the 980th Hospital of the Joint Logistic Support Force of PLA, Shijiazhuang 050091, China
| | - Z Y Sui
- Department of Burn and Plastic Surgery, the 980th Hospital of the Joint Logistic Support Force of PLA, Shijiazhuang 050091, China
| | - J L Zhang
- Department of Burn and Plastic Surgery, the 980th Hospital of the Joint Logistic Support Force of PLA, Shijiazhuang 050091, China
| | - L E An
- Department of Burn and Plastic Surgery, the 980th Hospital of the Joint Logistic Support Force of PLA, Shijiazhuang 050091, China
| | - L L Liu
- Department of Burn and Plastic Surgery, the 980th Hospital of the Joint Logistic Support Force of PLA, Shijiazhuang 050091, China
| | - C L Zhang
- Department of Burn and Plastic Surgery, the 980th Hospital of the Joint Logistic Support Force of PLA, Shijiazhuang 050091, China
| | - Y Y Yao
- Department of Burn and Plastic Surgery, the 980th Hospital of the Joint Logistic Support Force of PLA, Shijiazhuang 050091, China
| | - S L Qiu
- Department of Burn and Plastic Surgery, the 980th Hospital of the Joint Logistic Support Force of PLA, Shijiazhuang 050091, China
| | - X D Li
- Department of Burn and Plastic Surgery, the 980th Hospital of the Joint Logistic Support Force of PLA, Shijiazhuang 050091, China
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Gui CY, Qiu SL, Peng ZH, Wang M. Clinical and pathologic predictors of central lymph node metastasis in papillary thyroid microcarcinoma: a retrospective cohort study. J Endocrinol Invest 2018; 41:403-409. [PMID: 28884301 DOI: 10.1007/s40618-017-0759-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 08/26/2017] [Indexed: 01/09/2023]
Abstract
OBJECTIVE To identify the clinical and pathological predictors of central lymph node metastasis (CLNM) in patients with clinically lymph node-negative papillary thyroid microcarcinoma (PTMC). MATERIALS AND METHODS Data pertaining to 541 clinically lymph node-negative PTMC patients who underwent thyroid surgery at the Shanghai General Hospital between January 2010 and December 2013 were retrospectively analyzed. According to histopathological evidence of central lymph node involvement, patients were divided into central lymph node metastasis (CLNM)-positive and CLNM-negative groups; risk factors for CLNM were identified statistically. RESULTS LNM was found in 148 (27.4%) patients. Gender (P = 0.002), age (P < 0.001), tumor size (P < 0.001), multifocality (P < 0.001), and extrathyroidal extension (P < 0.001) were significantly different between CLNM-positive and CLNM-negative groups. On multivariate analyses, male sex (odds ratio [OR] = 2.656), age <45 years (OR = 4.184), tumor size >0.575 cm (OR = 2.105), gross extrathyroidal extension (OR = 14.605) and multifocality (OR = 2.084) were independent risk factors for CLNM. Among patients who did not have any of these five risk factors, only 3.9% were found to have CLNM. CONCLUSIONS A relatively high prevalence of CLNM was observed in patients with clinically lymph node-negative PTMC. CLNM was associated with male sex, younger age, larger tumor size, extrathyroidal extension and multifocal PTMC.
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Affiliation(s)
- C Y Gui
- Nursing Department, Eye and ENT Hospital, Fudan University, Shanghai, 200031, China
| | - S L Qiu
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, No. 100 Haining Road, Hongkou District, Shanghai, 200080, China
| | - Z H Peng
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, No. 100 Haining Road, Hongkou District, Shanghai, 200080, China
| | - M Wang
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, No. 100 Haining Road, Hongkou District, Shanghai, 200080, China.
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Wang Q, Deng TT, Kuang LJ, Qiu SL, Liang Y, Zhong XN, He ZY, Zhang JQ, Bai J, Li MH. [Effect of CD40 knock out on cytotoxic effector function in CD8(+) T cell of mice with cigarette smoke-induced emphysema]. Zhonghua Yi Xue Za Zhi 2016; 96:1597-601. [PMID: 27266691 DOI: 10.3760/cma.j.issn.0376-2491.2016.20.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To explore the effect of CD40 knock out on the cytotoxic function of CD8(+) T cell of mice with cigarette smoke-induced emphysema. METHODS A total of 40 male C57 mice were divided into four groups according to the random number table, including CD40(+ /+) control group, CD40(+ /+) smoke-exposure group, CD40(-/-)control group, CD40(-/-)smoke-exposure group. The smoke-exposure groups were exposed to cigarette smoke for 24 weeks to establish emphysema model. Morphological changes were evaluated by linear intercepts. The percentages of CD8, perforin, granzyme B positive cells were evaluated by immunohistochemistry. The mRNA expressions of perforin, granzyme B, interleukin (IL) -27 were measured by fluorescent real time quantitative polymerase chain reaction (RT-PCR). The IL-27 cytokine level was tested by enzyme-linked immunosorbent assay (ELISA). RESULTS The mean linear intercepts in CD40(+ /+) smoke-exposure group was significantly higher than CD40(+ /+) control group, CD40(-/-)control group, and CD40(-/-)smoke-exposure group [(37.2±3.6) vs (24.0±3.4), (22.5±2.4), (29.9±1.7) μm] (all P<0.05). CD40(-/-)smoke-exposure group was higher than CD40(+ /+) control group, CD40(-/-)control group (all P<0.05). The percentages of CD8 positive, perforin positive and granzyme B positive cells in CD40(+ /+) smoke-exposure group [(16.3±2.3)%, (11.4±2.1)%, (10.7±1.9)%] were significantly higher than CD40(+ /+) control group [(8.3±1.6)%, (5.1±1.2)%, (4.6±1.0)%], CD40(-/-)control group [ (6.4±1.5)%, (4.3±1.0)%, (4.2±1.0)%] and CD40(-/-)smoke-exposure group [(8.6±1.7)%, (5.6±1.3)%, (5.5±1.3)%] (all P<0.05). RT-PCR results showed that the mRNA expressions of perforin, granzyme B and IL-27 in CD40(+ /+) smoke-exposure group [(20.3±7.3), (18.3±12.3), (2.2±0.7)] were significantly higher than CD40(+ /+) control group [(9.4±4.8), (10.6±3.8), (1.3±0.6)], CD40(-/-)control group [ (8.1±3.1), (7.7±3.5), (1.1±0.5)] and CD40(-/-)smoke-exposure group [(12.9±6.2), (10.4±4.6), (1.5±0.4)] (all P<0.05). ELISA results showed that the level of IL-27 in CD40(+ /+) smoke-exposure group was significantly higher than CD40(+ /+) control group, CD40(-/-)control group and CD40(-/-)smoke-exposure group [(3 242±754) vs (1 627±710), (1 600±680), (1 850±583) ng/L] (all P<0.05). CONCLUSION Knockout the CD40 gene can inhibit the cytotoxic effector function in CD8(+) T cells of mice with cigarette smoke-induced emphysema, and alleviate the degree of emphysema.
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Affiliation(s)
- Q Wang
- Department of Respiratory Diseases, First Affiliated Hospital, Guangxi Medical University, Nanning 530021, China
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Deng TT, Zhong XN, Wang Q, Kuang LJ, Qiu SL, Liang Y, He ZY, Zhang JQ, Bai J. [Effect of CD40 on Foxp3(+) Treg cell in the lung of cigarette smoke exposure mice]. Zhonghua Yi Xue Za Zhi 2016; 96:1139-43. [PMID: 27095786 DOI: 10.3760/cma.j.issn.0376-2491.2016.14.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To evaluate the effect of CD40 on Foxp3(+) Treg cell in the lung of cigarette smoke exposure mice. METHODS According to the random number table, 20 wild type (WT) C57 BL/6 mice and 20 CD40(-/-)C57 BL/6 mice were randomly divided into two groups: WT control group, WT smoke-exposure group (24 weeks) and CD40(-/-) control group, CD40(-/-) smoke-exposure group (24 weeks) (n=10 each). Alveolar airspace enlargement was observed by HE staining. Morphological change was evaluated by mean linear intercepts (MLI). Immunohistochemical method was used to detect the quantity of Foxp3(+) cell in the lung. The mRNA expression of Foxp3 was measured by fluorescence quantitative real-time polymerase chain reaction (qRT-PCR). The protein level of Foxp3 was measured by Western blot. Interleukin (IL)-10 and IL-35 levels in the lung were tested by enzyme-linked immunosorbent assay (ELISA). RESULTS The MLI in CD40(-/-) smoke-exposure group was significantly lower than the WT smoke-exposure group[(30.0±1.7) vs (37.3±3.7) μm], but higher than the CD40(-/-) control group[(23.2±2.5) μm], WT smoke-exposure group was significantly higher than the WT control group[(22.2±1.7) μm](all P<0.05). The percentage of Foxp3(+) cell in the lungs of CD40(-/-) smoke-exposure group was significantly higher than the WT smoke-exposure group and CD40(-/-) control group[(16.89±0.75)% vs (9.65±0.74)% and (13.58±0.51)%], WT smoke-exposure group was significantly lower than WT control group[(12.13±0.81)%](all P<0.05). In the lungs, Foxp3 mRNA and protein expression in CD40(-/-) smoke-exposure group were increased compared to WT-smoke-exposure group and CD40(-/-) control group, WT smoke-exposure group were decreased compared to WT control group (all P<0.05). In the lungs, the level of IL-10 in CD40(-/-) smoke-exposure group was higher than the WT smoke-exposure group and CD40(-/-) control group[(231±25) vs (80±31) and (183±29) ng/L], WT smoke-exposure group was lower than the WT control group[(192±37) ng/L](all P<0.05). The level of IL-35 in CD40(-/-) smoke-exposure group was higher than the CD40(-/-) control group, WT control group and WT smoke-exposure group[(208±29) vs (118±29) , (148±36), (137±37) ng/L, all P<0.05]. CONCLUSION Knockout the CD40 gene can promote the differentiation of Foxp3(+) Treg cell in the lung of cigarette smoke exposure mice, indicating that blocking the CD40-CD40 ligand pathway may contribute to alleviate the smoking-induced pulmonary emphysema.
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Affiliation(s)
- T T Deng
- Department of Respiratory Diseases, First Affiliated Hospital, Guangxi Medical University, Nanning 530021, China
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Qiu SL, Marcus PM. Equilibrium lines and barriers to phase transitions: the cubic diamond to beta-tin transition in Si from first principles. J Phys Condens Matter 2012; 24:225501. [PMID: 22551557 DOI: 10.1088/0953-8984/24/22/225501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The phase transition between the cubic diamond (cd) and beta-tin (β-Sn) phases of Si under pressure and the region of interaction of the two phases are studied by first-principles total energy calculations. For a non-vibrating crystal we determine the pressure of the thermodynamic phase transition p(t) = 96 kbar, the Gibbs free energy barrier at p(t) of ΔG = 19.6 mRyd/atom that stabilizes the phases against a phase transition and the finite pressure range in which both phases are stable. We show that the phases in that pressure range are completely described by three equilibrium lines of states along which the structure, the total energy E, the hydrostatic pressure p that would stabilize the structure and the values of G all vary. Two equilibrium lines describe the two phases (denoted the ph-eq line, ph is cd or β-Sn phase); a third line is a line of saddle points of G with respect to structure (denoted the sp-eq line) that forms a barrier of larger G against instability of the metastable ranges of the phase lines. An important conclusion is that the sp-eq line merges with the two ph-eq lines: one end of the sp-eq line merges with the cd-eq line at high pressure, the other end merges with the β-Sn-eq line at low pressure. The mergers end the barrier protecting the metastable ranges of the two ph-eq lines, hence the lines go unstable beyond the mergers. The mergers thus simplify the phase diagram by providing a natural termination to the stable parts of all metastable ranges of the ph-eq lines. Although 96 kbar is lower than the experimental transition pressure, we note that phonon pressure raises the observed transition pressure.
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Affiliation(s)
- S L Qiu
- Department of Physics, Florida Atlantic University, Boca Raton, FL 33431-0991, USA.
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Qiu SL, Marcus PM. Structure and stability under pressure of cubic and hexagonal diamond crystals of C, BN and Si from first principles. J Phys Condens Matter 2011; 23:215501. [PMID: 21558599 DOI: 10.1088/0953-8984/23/21/215501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Application has been made of first-principles total-energy band-structure theory to find the equilibrium states under constant pressure of the super-hard cubic diamond (cd) and hexagonal diamond (hd) structures of carbon (C), boron nitride (BN) and medium-hard silicon (Si). The absolute stability of the equilibrium state is found by determinations of the breakdown under pressure of several deformations of lattice parameters around the equilibrium state. The calculations show that the hd structures are much stronger than the cd structures. Thus the γ angle of the hd structure of both C and BN is stable for pressures greater than 20 Mbar while the γ angle of the cd structures breaks down at 13 and 11 Mbar respectively. Also the bulk moduli B of the hd structure of C and BN are substantially greater than the B values of the cd structure above 2 Mbar; the B values of hd structures of C and BN are 20% greater than cd structures at p = 20 Mbar. However the cd structures have greater stability relative to the hd structures as shown by a lower Gibbs free energy at pressures up to 20 Mbar. Comparison is made with the pressure dependences of the medium-hard crystals of Si in the same structures, which show notably different behavior.
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Affiliation(s)
- S L Qiu
- Department of Physics, Florida Atlantic University, Boca Raton, FL 33431-0991, USA
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Qiu SL, Wang CS, Wang YT, Liu CG, Chen XY, Xie HF, Huang YA, Cheng RS. Effects of graphene oxides on the cure behaviors of a tetrafunctional epoxy resin. EXPRESS POLYM LETT 2011. [DOI: 10.3144/expresspolymlett.2011.79] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Abstract
Structures and properties of many of the phases of Ca under pressure are calculated from first principles by a systematic procedure that minimizes total energy E with respect to structure under the constraint of constant volume V. The minima of E are followed on successive sweeps of lattice parameters for 11 of 14 Bravais symmetries for one-atom-per-cell structures. The structures include the four orthorhombic phases. Also included are the hexagonal close-packed and cubic diamond phases with two atoms per primitive cell. No uniquely orthorhombic phases are found; all one-atom orthorhombic phases over a mega-bar pressure range are identical to higher-symmetry phases. The simple cubic phase is shown to be stable where it is the ground state. The number of distinct one-atom phases reduces to five plus the two two-atom phases. For each of these phases the Gibbs free energy at pressure p, G(p), is calculated for a non-vibrating lattice; the functions G(p) give the ground state at each p, the relative stabilities of all phases and the thermodynamic phase transition pressures for all phase transitions over a several-megabar range.
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Affiliation(s)
- S L Qiu
- Department of Physics, Florida Atlantic University, Boca Raton, FL 33431-0991, USA
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Abstract
A crystal phase in equilibrium under changing pressure traces out a line in structure space where each point corresponds to a structure. Along that equilibrium line the structure and all static properties describe the static behavior of the phase, including two sets of elastic constants and the bulk modulus. We discuss and illustrate the calculation of the equilibrium line and the properties from both the Gibbs free energy and the internal energy. We show that the bulk modulus, which gives a stress to strain ratio along the equilibrium line, has a universal relation independent of pressure to that set of elastic constants which control the stability, but not to the set of elastic constants appearing in the stress-strain relations at constant pressure.
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Affiliation(s)
- P M Marcus
- IBM Research Division, T J Watson Research Center, Yorktown Heights, NY 10598, USA
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Abstract
The elastic behavior and stability of elemental crystals are studied in the neighborhood of a stable equilibrium state, also called a phase, at finite pressure p. It is shown that two kinds of elastic constants are needed to describe elasticity under pressure. One set, designated as c(ij),i,j = 1-6, determines stability or lack of it; another set, designated as c(ij)(p), describes the linear relation between small additional stresses and strains added to the crystal in equilibrium at p. The stress-strain coefficients c(ij)(p) differ from previous formulations of the stress-strain relations by Barron and Klein (1965 Proc. Phys. Soc. 85 523) and Wallace (1972 Thermodynamics of Crystals (New York: Wiley)), who give c(ij) as stress-strain coefficients. Hence we were led to verify the use of the c(ij)(p) using a first-principles numerical calculation example for face centered cubic Al at 1500 kbar. The Gibbs free energy G of the crystal under pressure is shown to provide both a simple definition of equilibrium and an efficient way to calculate all the elastic constants of a general crystal. A computer program finds stable phases by making jumps in structure from an arbitrary initial structure; the jumps converge to minima of G with respect to the structure. In the calculation, 21 elastic constants are evaluated from a special set of G values and the 6 × 6 elastic constant matrix is tested for stability.
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Affiliation(s)
- P M Marcus
- IBM Research Division, T J Watson Research Center, Yorktown Heights, NY 10598, USA
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Abstract
The existence and stability under pressure of three phases of vanadium are calculated from first principles. The phases are one body-centered cubic (bcc) and two rhombohedral phases (rh(u) and rh(l)), which have greater and lower α values than the primitive bcc rhombohedral cell. The bcc phase is shown in two ways to become unstable at 0.65 Mbar, in agreement with an observed phase transition, but in disagreement with previous higher estimates. The rh phases exist when the bcc phase is unstable, but the bcc phase stabilizes again at 3 Mbar, and the rh phases disappear. At 1.15 Mbar the rh(u) phase becomes and remains unstable and the rh(l) phase becomes the ground state up to 3 Mbar, where the rh(l) phase disappears and the bcc phase takes over. The theory gives four phase transitions among the phases over the pressure range from 0 to 3 Mbar; two of them are bcc to rh(u)-a low pressure (0.3 Mbar) thermodynamic transition found from Gibbs free energies being equal (not observed) and a higher pressure (0.65 Mbar) instability transition when the bcc phase becomes unstable (observed).
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Affiliation(s)
- S L Qiu
- Department of Physics, Florida Atlantic University, Boca Raton, FL 33431-0991, USA
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Marcus PM, Moruzzi VL, Qiu SL. Type-II antiferromagnetism in compounds of iron with 4d metals. Phys Rev B Condens Matter 1996; 54:11933-11935. [PMID: 9985034 DOI: 10.1103/physrevb.54.11933] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Wang LD, Zhou Q, Hong JY, Qiu SL, Yang CS. p53 protein accumulation and gene mutations in multifocal esophageal precancerous lesions from symptom free subjects in a high incidence area for esophageal carcinoma in Henan, China. Cancer 1996. [PMID: 8608498 DOI: 10.1002/(sici)1097-0142(19960401)77:7<1244::aid-cncr3>3.0.co;2-i] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
BACKGROUND Multifocal occurrence of precancerous lesions of the esophagus has been observed among individuals in a high incidence area for esophageal carcinoma in Henan Province, China. Results from recent studies suggest that p53 protein accumulation and mutation occur early in the pathogenesis of esophageal carcinoma. Discordant p53 gene mutations have been observed in invasive carcinoma and preinvasive lesions from a patient with esophageal carcinoma. The p53 alterations in the multifocal precancerous lesions from symptom-free subjects, however, have not been investigated. METHOD Two biopsy samples, one each from the middle-third and the lower-third of the esophagus, from each subject, were taken from 55 symptom-free subjects in a high incidence area for esophageal cancer in Huixian, Henan Province, China. p53 protein accumulation and p53 gene mutation were analyzed in the multifocal esophageal precancerous lesions from these subjects. RESULTS Histopathologic examination showed that among the 110 biopsies, 20 had dysplasia, 72 had basal cell hyperplasia, and 18 had normal epithelia. Concurrent lesions at the middle- and lower-third biopsy occurred in 2 subjects with dysplasia (2 of 55 subjects, 4%) and 26 subjects with basal cell hyperplasia (26 of 55 subjects, 47%). Analysis by immunohistochemistry showed high concurrent rates of p53 protein accumulation (51 of 55 subjects, 93%). p53 sequence analysis of 32 samples from 16 subjects identified missense mutations in 5. In one subject, there were three different mutations in the middle-third biopsy (codon 161, GCC-->GAC) and the lower-third biopsy (codon 159, GCC-->CCC). A single mutation was detected in the other four subjects in either the middle- or lower-third biopsy. CONCLUSIONS The present findings indicate that p53 protein accumulation and mutations occur in the early stages of human esophageal carcinogenesis. Independent somatic mutations of the p53 tumor suppressor gene and protein accumulation in different regions of the esophageal "field" might be key molecular events in multifocal esophageal carcinogenesis.
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Affiliation(s)
- L D Wang
- Laboratory for Cancer Research, College of Pharmacy, Rutgers University, Piscataway, New Jersey 08854, USA
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Moruzzi VL, Marcus PM, Qiu SL. Oscillatory magnetism in compounds of iron with 4d metals. Phys Rev B Condens Matter 1995; 52:3448-3452. [PMID: 9981465 DOI: 10.1103/physrevb.52.3448] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Ruckman MW, Qiu SL, Strongin M. Interaction of ytterbium with solid ammonia and xenon studied using photoelectron spectroscopy. Phys Rev B Condens Matter 1995; 51:5269-5273. [PMID: 9979405 DOI: 10.1103/physrevb.51.5269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Qiu SL, Jordan RG, Dorsey AT, Durham PJ, Guo GY, Ruckman MW. Cu local density of states in CuAu I from photoemission measurements. Phys Rev B Condens Matter 1995; 51:1513-1516. [PMID: 9978865 DOI: 10.1103/physrevb.51.1513] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Wang LD, Shi ST, Zhou Q, Goldstein S, Hong JY, Shao P, Qiu SL, Yang CS. Changes in p53 and cyclin D1 protein levels and cell proliferation in different stages of human esophageal and gastric-cardia carcinogenesis. Int J Cancer 1994; 59:514-9. [PMID: 7960222 DOI: 10.1002/ijc.2910590414] [Citation(s) in RCA: 76] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The objective of this study was to quantify the changes in p53 and cyclin D1 protein levels in different stages of human esophageal and gastric cardia carcinogenesis in a high-risk population in Henan, China. Immunoreactivity of p53, cyclin D1 and proliferating-cell nuclear antigen (PCNA) was observed in the cell nuclei of esophageal and gastric cardia biopsies. The number of p53-immunostaining-positive cells was low in normal epithelia, slightly increased in basal-cell hyperplasia (BCH), markedly increased in dysplasia (DYS) (10-fold), and further increased in squamous-cell carcinoma (SCC) (40-fold). This pattern of change was similar to that of cell proliferation as indicated by PCNA immunostaining. On the other hand, the number of cyclin D1-immunostaining-positive cells did not increase from BCH to DYS, although a slight increase from DYS to SCC was noted. In the gastric cardia, again, the pattern of change of p53-positive cells in different stages of lesions paralleled the pattern of cell proliferation. The number of p53-positive cells was very low, much lower than that of PCNA-positive cells, in normal, chronic superficial gastritis (CSG) and chronic atrophic gastritis (CAG); therefore, the increase of p53-positive cells from CAG to DYS was more dramatic (100-fold). From DYS to adenocarcinoma (AC), the p53-positive and the PCNA-positive cells increased 4-fold. On the other hand, the number of cyclin D1-positive cells did not increase in pre-cancerous lesions, but increased slightly in AC. This study demonstrates that p53 protein accumulation increased with the progression of pre-cancerous lesions, especially in the genesis of dysplasia, both in the esophagus and in the gastric cardia. Our approach of quantitative immunohistochemistry sheds light on the mechanisms of genesis of esophageal and gastric-cardia cancers, which frequently occur together in many high-incidence areas.
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Affiliation(s)
- L D Wang
- Laboratory for Cancer Research, College of Pharmacy, Rutgers University, Piscataway, NJ 08854
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18
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Jordan RG, Liu Y, Qiu SL, Ginatempo B, Bruno E, Stocks GM, Shelton WA. Electronic structures of disordered Ag-Mg alloys. Phys Rev B Condens Matter 1994; 50:11459-11465. [PMID: 9975275 DOI: 10.1103/physrevb.50.11459] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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19
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Yang GR, Zhao LQ, Li SS, Qiu SL, Wang YM, Jia JH. Endoscopic Nd:YAG laser therapy in patients with early superficial carcinoma of the esophagus and the gastric cardia. Endoscopy 1994; 26:681-5. [PMID: 7859678 DOI: 10.1055/s-2007-1009065] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A group of 33 patients, 27 with early superficial esophageal cancer and six with early superficial carcinoma of the gastric cardia, were treated with endoscopic neodymium:yttrium aluminum garnet (Nd:YAG) laser from April 1989 to March 1993. Of the 33 patients, in 32 (97%) the disappearance of the cancer cells was noted. They were treated 1-6 times (average 2.6) with laser irradiation. No serious complications, such as perforation, occurred in the series. Twenty-two patients were followed up for 24-55 months. A negative biopsy was recorded in 16 (72.7%) of the 22 patients; the other six (27.3%) cases were found to have recurrent early cancer during the follow-up period from the 36th to the 40th months, and were treated with supplementary endoscopic therapy or surgical resection. It is suggested that endoscopic Nd: YAG laser may be a safe and effective therapy for early carcinoma of the esophagus and the gastric cardia, when the risks of surgery are too high or the patient has refused surgical resection.
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Affiliation(s)
- G R Yang
- Henan Institute of Medical Sciences, Henan Medical University, Zheng Zhou, People's Republic of China
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20
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Wu J, Wang ML, Xu Z, Qiu SL, Zhu JQ, Zhu DX. [The role of TNF-alpha in the growth and differentiation of U937 cells induced by PMA and IFN-gamma]. Shi Yan Sheng Wu Xue Bao 1994; 27:307-13. [PMID: 7801724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The effects of PMA and IFN-gamma on regulation of growth and differentiation of human monoblastic leukemic cell U937 were examined. U937 cells were stimulated by different concentrations of PMA and IFN-gamma respectively and NBT reduction assay was used to detect the differentiation of the cells. The results showed that both PMA and IFN-gamma dose-dependently induced differentiation of U937 cells into mature macrophage-like cells. The data also revealed a time-course response in the differentiation induction. Moreover, the U937 cell growth was significantly inhibited by the treatment of PMA and IFN-gamma. These results suggest that PMA and IFN-gamma coupled the regulation of U937 cell growth and differentiation. It was found that tumor necrosis factor-alpha (TNF-alpha) was expressed by the stimulated U937 cells. The specific monoclonal antibody against TNF-alpha diminished the effects of PMA and IFN-gamma on the growth and differentiation of U937 cells. Thus the endogenous TNF-alpha may involved in the mechanism of the effects of PMA and IFN-gamma on the differentiation of U937 cells. The regulatory action of the endogenous TNF-alpha on U937 cells was not due to its cytotoxic effect.
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Affiliation(s)
- J Wu
- Department of Biochemistry, Nanjing University
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21
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22
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Ruckman MW, Xia B, Qiu SL. Adsorption of C60 on Ta(110): Photoemission and C K-edge studies. Phys Rev B Condens Matter 1993; 48:15457-15460. [PMID: 10008089 DOI: 10.1103/physrevb.48.15457] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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23
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Jordan RG, Liu Y, Qiu SL, Xu X, Durham PJ, Guo GY. Origin of long-period superlattices in Ag-Mg alloys. Phys Rev B Condens Matter 1993; 47:16521-16524. [PMID: 10006088 DOI: 10.1103/physrevb.47.16521] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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24
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Wang LD, Hong JY, Qiu SL, Gao H, Yang CS. Accumulation of p53 protein in human esophageal precancerous lesions: a possible early biomarker for carcinogenesis. Cancer Res 1993; 53:1783-7. [PMID: 8467496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The level of p53 protein was determined immunohistochemically in normal tissues and tissues with different severities of lesions (basal cell hyperplasia, dysplasia, carcinoma in situ, and carcinoma) from surgically resected human esophagi and esophageal biopsies of symptom-free subjects. The samples were from an area with high esophageal cancer incidence in northern China (Linxian and Huixian in the Henan province). Tissue sections were incubated with p53 antibodies for immunostaining. Conventional hematoxylin and eosin stain was also used. In surgically resected esophageal specimens, elevated p53 protein levels were found in the cell nuclei in tissues with precancerous and cancerous lesions. From basal cell hyperplasia to dysplasia to carcinoma in situ, the p53 immunostain-positive cells increased in number, and their distribution had roughly the same pattern as that of the proliferating cells. However, positive stain was not observed in the dividing basal cells of the normal epithelium of the surgically resected tissues. A similar pattern of immunostaining was observed in the abnormal tissues of the biopsy samples from the symptom-free subjects. An intriguing observation is that some p53 immunostain-positive cells were observed in 3 of 6 cases of histologically normal epithelia of biopsy samples. Only the papillary immunostaining pattern was observed in these three "normal" cases. Although the molecular basis for such positive stain remains to be investigated, it is possible that p53 protein accumulation occurs early in the pathogenesis of esophageal cancer and that p53 mutation is closely associated with the initiation of this cancer. The accumulation of p53 protein may be a promising early biomarker for identifying high-risk subjects for esophageal cancer.
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Affiliation(s)
- L D Wang
- Laboratory for Cancer Research, College of Pharmacy, Rutgers University, Piscataway, New Jersey 08855
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25
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Jacob JH, Riviere A, Mandard AM, Muñoz N, Crespi M, Etienne Y, Castellsagué X, Marnay J, Lebigot G, Qiu SL. Prevalence survey of precancerous lesions of the oesophagus in a high-risk population for oesophageal cancer in France. Eur J Cancer Prev 1993; 2:53-9. [PMID: 8428178 DOI: 10.1097/00008469-199301000-00009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The prevalence of precancerous lesions of the oesophagus and their association with alcohol drinking, tobacco smoking and some dietary factors were examined in an endoscopic survey carried out in Lower Normandy, France, a high-risk area for oesophageal cancer. The study included 134 male volunteers of 35-64 years of age. In 124 of the volunteers oesophageal biopsies were evaluable. At histology, the prevalence of chronic oesophagitis, epithelial atrophy and dysplasia was 63%, 1.6% and 4.8%, respectively. The prevalence of these precancerous lesions was significantly associated with cigarette smoking and frequent consumption of butter.
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Affiliation(s)
- J H Jacob
- Centre Régional François Baclesse, Caen, France
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26
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Wang LD, Qiu SL, Yang GR, Lipkin M, Newmark HL, Yang CS. A randomized double-blind intervention study on the effect of calcium supplementation on esophageal precancerous lesions in a high-risk population in China. Cancer Epidemiol Biomarkers Prev 1993; 2:71-8. [PMID: 8420615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
To determine whether dietary calcium supplementation affects esophageal precancerous lesions, 200 subjects with esophageal lesions in a high-risk area for esophageal cancer in China (Huixian, Henan) were randomly divided into 2 groups (100 subjects/group). Subjects in one group received an oral supplementation of calcium carbonate tablets (1200 mg of calcium daily), and subjects in the other group received placebo pills for 11 months. At the entry and the end of the trial, esophagoscopy was performed, and 2 or 3 biopsy specimens were taken from the middle and lower thirds of the esophagus and from macroscopic lesions, if any, of each subject for histopathology and cell proliferation analysis with deoxythymidine labeling. In comparison to normal epithelium, increased proliferative compartment size was observed in epithelia with hyperplasia or dysplasia. After the intervention, the percentage of individuals with "normal epithelium," "basal cell hyperplasia," "basal cell hyperplasia II," and "basal cell hyperplasia III and dysplasia" were 44, 31, 13, and 11% in the calcium group and 35, 39, 17, and 6% in the placebo group, respectively. The labeling index was 0.046 in the calcium group and 0.044 in the placebo group. After the intervention, the labeling index in basal cell layers 1 to 5, the major zone of cell proliferation, fell 38% in the calcium group and 44% in the placebo group from before the intervention. Therefore, in this study, calcium supplementation was not shown to have beneficial effects in alleviating precancerous lesions and abnormal cell proliferation patterns.
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Affiliation(s)
- L D Wang
- Henan Institute of Medical Sciences, Henan Medical University, Zhengzhou, China
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27
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Qiu SL, Jordan RG, Begley AM, Wang X, Liu Y, Ruckman MW. Photoemission studies of the Fe 3s spin splitting in Fe-V alloys. Phys Rev B Condens Matter 1992; 46:13004-13007. [PMID: 10003339 DOI: 10.1103/physrevb.46.13004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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28
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Wu J, Wang ML, Qiu SL, Han JK, Zhu DX. [IL-2 potentiates the IL-3 production by ConA activated mouse splenic T cells]. Shi Yan Sheng Wu Xue Bao 1992; 25:25-30. [PMID: 1598800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
In addition to the regulation of T cell growth, IL-2 exerts effects on the induction of certain lymphokines. We show here that IL-2 synergizes with 5 micrograms/ml of ConA to promote the production of IL-3 in mouse splenic T cell cultures. IL-3 was measured as CFU-GEMM-inducing activity on mouse bone marrow progenitor cells in the supernatant of the stimulated mouse splenic T cells (TCM). The resting T cells produced no CFU-GEMM-inducing activity, but could be induced to produce low level of CFU-GEMM-inducing activity in the presence of ConA. In vitro exposure to IL-2 markedly increased CFU-GEMM-inducing activity production (nearly up to 8-fold) by the ConA-activated T cells. Optimal stimulation was observed when 80 u/ml IL-2 was used for 48 h incubation. Anti-mouse IL-3 monoclonal antibody inhibited the CFU-GEMM inducing activity of TCM. Moreover, the TCM stimulated the proliferation of IL-3 dependent cell line FDC-P1. We also show that IL-2 and ConA-treated T cells expressed high level of IL-3 mRNA through dot blot analysis. These results confirmed the nature of CFU-GEMM-inducing activity of TCM as IL-3. The capacity of IL-2 to promote the production of IL-3 may represent an important mechanism by which it mediate the communication between the immune and hematopoietic systems.
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Affiliation(s)
- J Wu
- Dept. of Biochem., Nanjing Univ
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29
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Ruckman MW, Chen J, Qiu SL, Kuiper P, Strongin M, Dunlap BI. Interpreting the near edges of O2 and O2- in alkali-metal superoxides. Phys Rev Lett 1991; 67:2533-2536. [PMID: 10044450 DOI: 10.1103/physrevlett.67.2533] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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30
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Tranquada JM, Heald SM, Kunnmann W, Moodenbaugh AR, Qiu SL, Xu Y, Davies PK. Comparative study of Cu K-edge x-ray-absorption and Cu 2p x-ray photoelectron spectra in copper oxide compounds. Phys Rev B Condens Matter 1991; 44:5176-5189. [PMID: 9998328 DOI: 10.1103/physrevb.44.5176] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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31
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Ruckman MW, Qiu SL, Chen J, Strongin M. Near-edge study of molecular oxygen and nitrogen clusters on a krypton surface. Phys Rev B Condens Matter 1991; 43:8603-8605. [PMID: 9996494 DOI: 10.1103/physrevb.43.8603] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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32
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Krol A, Lin CS, Ming ZH, Sher CJ, Kao YH, Lin CL, Qiu SL, Chen J, Tranquada JM, Strongin M, Smith GC, Tao YK, Meng RL, Hor PH, Chu CW, Cao G, Crow JE. X-ray-absorption studies of Nd2-xCexCuO4. Phys Rev B Condens Matter 1990; 42:4763-4766. [PMID: 9996013 DOI: 10.1103/physrevb.42.4763] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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33
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Qiu SL, Lin CL, Chen J, Strongin M. Photoemission studies of the low-temperature reaction of metals and oxygen. Phys Rev B Condens Matter 1990; 41:7467-7473. [PMID: 9993037 DOI: 10.1103/physrevb.41.7467] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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34
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Strongin M, Qiu SL, Chen J, Lin CL, McCarron EM. Question of superoxide in La2CuO4+ delta. Phys Rev B Condens Matter 1990; 41:7238-7240. [PMID: 9992994 DOI: 10.1103/physrevb.41.7238] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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35
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Abstract
The normal swine rectum was heated using an intracavitary microwave radiator for 30 min at 43, 44, 45, 46, 47, and 48 degrees C. The animals were sacrificed 30 days later. The degree of heat injury was evaluated on a histological score system with a maximum possible damage score of 36 (100%). The scores for late damage were 8, 21, 23, 54, 58, and 74%, respectively. The 50% maximum damage was 45.8 +/- 0.5 degrees C/30 min. With the same score system, the heat damage to the oesophagus, which we have calculated previously, was evaluated and compared with that of the present data. The heat damage at the same temperature applied to the lumen was more severe in the rectum than that of the oesophagus. There was a roughly 2-3 degrees C difference in thermosensitivity between these two organs.
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Affiliation(s)
- D J Li
- Department of Radiation Oncology, Henan Tumor Institute and Hospital, Zhengzhou, China
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36
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Lin CL, Qiu SL, Chen J, Strongin M, Cao G, Jee CS, Crow JE. Photoemission and oxygen K-edge absorption studies of Ba(Pb,Bi)O3. Phys Rev B Condens Matter 1989; 39:9607-9610. [PMID: 9947704 DOI: 10.1103/physrevb.39.9607] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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37
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Ruckman MW, Qiu SL, Jiang L, Chen J, Strongin M. Photoemission study of the growth and modification of the Al/Ta(110) interface. Phys Rev B Condens Matter 1989; 39:5591-5598. [PMID: 9948968 DOI: 10.1103/physrevb.39.5591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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38
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Qiu SL, Lin CL, Chen J, Strongin M. Photoemission studies of the interaction of Li and solid molecular oxygen. Phys Rev B Condens Matter 1989; 39:6194-6197. [PMID: 9949045 DOI: 10.1103/physrevb.39.6194] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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39
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Qiu SL, Lin CL, Jiang LQ, Strongin M. Photoemission studies of the metal-nonmetal transition of sodium on solid ammonia. Phys Rev B Condens Matter 1989; 39:1958-1961. [PMID: 9948421 DOI: 10.1103/physrevb.39.1958] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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40
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Abstract
This report discusses precancerous changes in the esophageal mucosa from three points of view: the histopathologic features of the esophageal mucosa in persons known to be at high risk for esophageal carcinoma (EC); the histopathologic features of the esophageal mucosa of asymptomatic persons randomly selected from areas at high and low risk for EC; and a prospective follow-up of a randomly examined group to determine the impact of esophagitis and dysplasia upon subsequent development of EC. Esophagitis was commonly found at endoscopic examination, but there was no difference in frequency of esophagitis in the randomly selected subjects from high-risk and low-risk areas. Although one third of patients with dysplasia developed cancer over a follow-up period of 30 to 78 months, only 4% of those with esophagitis alone developed EC. The authors conclude that dysplasia, diagnosed by cytologic or histologic examination, is a precancerous state, and that esophagitis is a nonspecific pathologic condition of the esophagus, but moderate and severe types of chronic esophagitis might create an environment favorable for the development of esophageal carcinoma.
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Affiliation(s)
- S L Qiu
- Department of Tumor Pathology, Henan Medical University, ZhengZhou, Henan Province, People's Republic of China
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41
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Abstract
This report discusses precancerous changes in the esophageal mucosa from three points of view: the histopathologic features of the esophageal mucosa in persons known to be at high risk for esophageal carcinoma (EC); the histopathologic features of the esophageal mucosa of asymptomatic persons randomly selected from areas at high and low risk for EC; and a prospective follow-up of a randomly examined group to determine the impact of esophagitis and dysplasia upon subsequent development of EC. Esophagitis was commonly found at endoscopic examination, but there was no difference in frequency of esophagitis in the randomly selected subjects from high-risk and low-risk areas. Although one third of patients with dysplasia developed cancer over a follow-up period of 30 to 78 months, only 4% of those with esophagitis alone developed EC. The authors conclude that dysplasia, diagnosed by cytologic or histologic examination, is a precancerous state, and that esophagitis is a nonspecific pathologic condition of the esophagus, but moderate and severe types of chronic esophagitis might create an environment favorable for the development of esophageal carcinoma.
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Affiliation(s)
- S L Qiu
- Department of Tumor Pathology, Henan Medical University, ZhengZhou, Henan Province, People's Republic of China
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Abstract
Intracavitary hyperthermia was applied to the rectum of normal pigs at 43 degrees, 44 degrees, 45 degrees, 46 degrees, 47 degrees and 48 degrees C for 30 min. A score of temperature-induced histological changes of each specimen was made 48 h after heating. The scores from each specimen and temperature were used for regression analysis. Judging from the regression lines of the scores obtained for rectum and oesophagus, we conclude that the thermosensitivity of the rectum is about 1 degree C higher than that of the oesophagus. It suggested that 43 degrees C/30 min could be a safe dose for normal rectum. The thermosensitivity of swine rectum is discussed.
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Affiliation(s)
- D J Li
- Henan Tumor Institute, Zhengzhou, Henan, China
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43
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Qiu SL, Ruckman MW, Brookes NB, Johnson PD, Chen J, Lin CL, Strongin M, Sinkovic B, Crow JE, Jee CS. Interaction of H2O with a high-temperature superconductor. Phys Rev B Condens Matter 1988; 37:3747-3750. [PMID: 9944990 DOI: 10.1103/physrevb.37.3747] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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44
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Qiu SL, Pan X, Strongin M, Citrin PH. Photoemission from supported metal clusters: The problem of the support. Phys Rev B Condens Matter 1987; 36:1292-1295. [PMID: 9942946 DOI: 10.1103/physrevb.36.1292] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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45
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Johnson PD, Qiu SL, Jiang L, Ruckman MW, Strongin M, Hulbert SL, Garrett RF, Sinkovic B, Smith NV, Cava RJ, Jee CS, Nichols D, Kaczanowicz E, Salomon RE, Crow JE. Photoemission studies of the high-Tc superconductor Ba2YCu3O9- delta. Phys Rev B Condens Matter 1987; 35:8811-8813. [PMID: 9941260 DOI: 10.1103/physrevb.35.8811] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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46
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Mandard AM, Duigou F, Marnay J, Masson P, Qiu SL, Yi JS, Barrellier P, Lebigot G. Analysis of the results of the micronucleus test in patients presenting upper digestive tract cancers and in non-cancerous subjects. Int J Cancer 1987; 39:442-4. [PMID: 3557703 DOI: 10.1002/ijc.2910390405] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A micronucleus test was performed on 75 subjects of whom 38 presented with cancer of the upper digestive tract and 37 were free of disease; the absence of cancerous or pre-cancerous lesions in this latter group was confirmed by endoscopy and vital staining. The daily levels of alcohol and tobacco consumption of the 75 subjects were determined by precise questioning: 78% of the non-cancerous subjects smoked less than 10 g of tobacco per day whereas 79% of the cancer patients smoked 10 g or more daily. The alcohol intake of 78% of the non-cancerous subjects and 63% of the cancer patients was less than 101 ml per day. Only 10% of the cancer patients had combined daily intake levels corresponding to the threshold of sensitivity of the micronucleus test as defined by previous studies. The mean frequency of micronucleated buccal cells was 0.26% in the cancer patients and 0.13% in the non-cancerous subjects. All non-cancerous patients presented a negative test. Only 5% of the cancer patients presented a micronucleated cell frequency above 1% and could thus be considered as positive. It thus appears that the micronucleus test was not significantly positive in our population of 38 cancer patients.
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47
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Pan X, Qiu SL, Raaen S, Florit MI, Shek ML, Strongin M. Observation of bulk tantalum oxide formation below 35 K. Phys Rev B Condens Matter 1987; 35:3740-3744. [PMID: 9941893 DOI: 10.1103/physrevb.35.3740] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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48
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Abstract
The normal swine oesophagus was heated using an intracavity microwave radiator for 30 min at 45, 46, 47, 48 and 49 degrees C. The animals were sacrificed 48 h or 30 days later. The degree of heat injury was evaluated on an histological score system with a maximum possible damage score of 100 per cent. The acute heat injury (48 h after heating) at these temperatures was 2, 17, 40, 50 and 67 per cent respectively. The main feature of acute heat damage was degenerative necrosis or thrombosis of blood vessels at the oesophageal wall. This occurred only in one out of nine cases at 45 and 46 degrees C heating, but in seven out of nine cases at 48 and 49 degrees C. The main feature of late heat damage was fibrosis. The score of chronic damage for the above groups was 12, 23, 30, 34 and 51 per cent, respectively. When animals were preheated at 44 degrees C for 30 min and then reheated at 45-49 degrees C 4 h later, we found that preheating could provide about 2 degrees C protection. From the above data, we suggest that 45 degrees C and 30 min heating is a safe dose for normal oesophageal tissue.
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